U.S. patent application number 16/064088 was filed with the patent office on 2019-01-03 for hand-held power tool.
The applicant listed for this patent is Robert Bosch GmbH. Invention is credited to Stefan Holst, Florian Kneer, Christian Lang, Marcin Rejman, Andreas Schlegel, Andre Ullrich, Wolf Zahn.
Application Number | 20190001477 16/064088 |
Document ID | / |
Family ID | 58994039 |
Filed Date | 2019-01-03 |
United States Patent
Application |
20190001477 |
Kind Code |
A1 |
Ullrich; Andre ; et
al. |
January 3, 2019 |
HAND-HELD POWER TOOL
Abstract
A hand-held power tool, in particular a drilling hammer and/or
chisel hammer, that includes at least one housing, at least one
handle, and at least one interface device for establishing an
electrical and mechanical connection to at least one rechargeable
battery pack. The hand-held power tool includes at least one
damping unit that is provided for supporting the at least one
handle relative to the at least one housing in a vibration-damped
manner. The at least one interface device is situated on the at
least one handle.
Inventors: |
Ullrich; Andre;
(Leinfelden-Echterdingen, DE) ; Schlegel; Andreas;
(Leinfelden-Echterdingen, DE) ; Lang; Christian;
(Stuttgart, DE) ; Holst; Stefan; (Filderstadt,
DE) ; Rejman; Marcin; (Waiblingen, DE) ; Zahn;
Wolf; (Stuttgart, DE) ; Kneer; Florian;
(Duernau, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Robert Bosch GmbH |
Stuttgart |
|
DE |
|
|
Family ID: |
58994039 |
Appl. No.: |
16/064088 |
Filed: |
November 24, 2016 |
PCT Filed: |
November 24, 2016 |
PCT NO: |
PCT/EP2016/078610 |
371 Date: |
June 20, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B25F 5/006 20130101;
Y02E 60/10 20130101; H01M 2/1055 20130101; H01R 11/12 20130101;
B25D 17/24 20130101; B25F 5/02 20130101; H01R 9/18 20130101; B25D
17/043 20130101; B25F 5/00 20130101 |
International
Class: |
B25D 17/04 20060101
B25D017/04; B25D 17/24 20060101 B25D017/24; B25F 5/00 20060101
B25F005/00; B25F 5/02 20060101 B25F005/02; H01M 2/10 20060101
H01M002/10; H01R 11/12 20060101 H01R011/12 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 22, 2015 |
DE |
10 2015 226 406.8 |
Apr 5, 2016 |
DE |
10 2016 205 567.4 |
Claims
1-10. (canceled)
11. A hand-held power tool, comprising: at least one housing; at
least one handle; at least one interface device for establishing an
electrical and mechanical connection to at least one rechargeable
battery pack; and at least one damping unit for supporting the at
least one handle relative to the at least one housing in a
vibration-damped manner, the at least one interface device being
situated on the at least one handle.
12. The hand-held power tool of claim 11, wherein the at least one
interface device includes at least one exchange interface unit
configured to be detachably connectable to the at least one
rechargeable battery pack and to the at least one handle, and/or to
the at least one rechargeable battery pack and to the at least one
housing.
13. The hand-held power tool of claim 11, further comprising: at
least one safety release unit for automatically releasing the
fastening of the at least one exchange interface unit and/or of the
at least one rechargeable battery pack when a limiting value of at
least one safety parameter is exceeded.
14. The hand-held power tool of claim 11, further comprising: at
least one rechargeable battery damping unit for supporting at least
a portion of the at least one interface device in a
vibration-damped manner.
15. The hand-held power tool of claim 11, further comprising: at
least one rechargeable battery pack that is at least partially
electrically and mechanically coupleable to the at least one
interface device, a combined mass of the at least one handle and of
the at least one rechargeable battery pack being at least 1/8 of a
total hand-held power tool mass.
16. The hand-held power tool of claim 11, wherein the at least one
interface device includes at least one auxiliary function unit
which provides an auxiliary function in addition to the electrical
and mechanical coupling to at least one rechargeable battery
pack.
17. The hand-held power tool of claim 11, further comprising: at
least one absorption unit that is at least partially situated on
the interface device.
18. The hand-held power tool of claim 13, wherein the at least one
safety release unit includes at least one release element having an
at least partially elastic design.
19. The hand-held power tool of claim 11, further comprising: at
least one adjustment unit for adjusting at least one damping
parameter of the at least one damping unit.
20. An exchange interface unit for a hand-held power tool,
comprising: an exchange interface device for establishing an
electrical and mechanical connection to at least one rechargeable
battery pack of the hand-held power tool; wherein the hand-held
power tool includes: at least one housing; at least one handle; the
exchange interface device for establishing the electrical and
mechanical connection to the at least one rechargeable battery
pack; and at least one damping unit for supporting the at least one
handle relative to the at least one housing in a vibration-damped
manner, the exchange interface device being situated on the at
least one handle.
21. The hand-held power tool of claim 11, wherein the hand-held
power tool includes a drilling hammer and/or chisel hammer.
Description
FIELD OF THE INVENTION
[0001] The present invention is to a hand-held power tool.
BACKGROUND INFORMATION
[0002] Hand-held power tools, including a drilling hammer and/or a
chisel hammer, are believed to be understood.
SUMMARY OF THE INVENTION
[0003] The present invention is directed to a hand-held power tool,
in particular a drilling hammer and/or chisel hammer, that includes
at least one housing, at least one handle, and at least one
interface device for establishing an electrical and mechanical
connection to at least one rechargeable battery pack.
[0004] It is provided that the hand-held power tool includes at
least one damping unit that is provided for supporting the at least
one handle relative to the at least one housing in a
vibration-damped manner, the at least one interface device being
situated on the at least one handle. Due to situating the at least
one interface device on the at least one handle, in an operating
state of the hand-held power tool a preferably low transmission of
impacts and vibrations to the at least one rechargeable battery
pack that is coupled to the hand-held power tool via the interface
device may be achieved in an advantageously simple manner, as the
result of which damage to the at least one rechargeable battery
pack, in particular wear, caused by the mechanical stress, on
electrical contact elements and/or fastening elements for
connecting the at least one rechargeable battery pack to the
hand-held power tool may advantageously be avoided. In addition,
due to situating the at least one interface device on the at least
one handle, a preferably good and balanced weight distribution of
the hand-held power tool may be achieved, and due to the at least
one vibration-damped handle, further components for damping the at
least one rechargeable battery pack relative to the housing may be
dispensed with.
[0005] In the present context, a "hand-held power tool" is
understood in particular to mean a machine, in particular a power
drill, a drilling hammer, a chisel hammer, a percussion drill, a
saw such as a jigsaw or reciprocating saw, a plane, a screwdriver,
a milling tool, a grinder, an angle grinder, an orbital sander, a
garden tool, and/or a multifunctional tool, that processes a
workpiece and is transportable by an operator without a transport
machine. The hand-held power tool may have a mass that is in
particular less than 40 kg, more preferably less than 10 kg, and
particularly preferably less than 5 kg. The housing of the
hand-held power tool preferably includes at least two housing
shells, and in an installed state forms at least part, which may be
at least a large part, of a shell surface of the hand-held power
tool that is grippable by an operator of the hand-held power tool.
The at least one housing of the hand-held power tool is made at
least partially of plastic. In the present context, a "handle" is
understood in particular to mean an element that is provided for
holding and/or guiding the hand-held power tool. The handle is
preferably grippable and/or holdable at least with one hand, and in
particular includes at least one control element that is provided
in particular for controlling a drive unit of the hand-held power
tool. The control element may be configured, for example, as an
on/off switch, as an automatic safety switch-off device, and/or as
a metering controller for metering an impact energy. In particular,
the handle is provided for being completely grasped all around with
one hand by an in particular adult operator. A circumference of the
handle is preferably 70 mm minimum, more preferably 90 mm minimum,
and particularly preferably 110 mm minimum, and/or in particular a
maximum of 210 mm, which may be 180 mm, and very particularly
preferably 140 mm. The handle is in particular made at least
partially of a plastic and/or a rubber material.
[0006] The interface device is preferably provided for detachably
connecting the at least one rechargeable battery pack to the
hand-held power tool. At least one fastening element is
advantageously provided for mechanically connecting the at least
one rechargeable battery pack to the hand-held power tool. At least
one contact element is advantageously provided for electrically
connecting the at least one rechargeable battery pack to the
hand-held power tool. The at least one interface device preferably
includes at least one interface situated on the at least one
rechargeable battery pack, at least one interface situated on the
hand-held power tool, and/or an exchange interface unit that is
detachably coupleable to the at least one rechargeable battery pack
and to the hand-held power tool. In the present context, a
"rechargeable battery pack" is understood in particular to mean an
energy store unit that is provided for being coupleably connected
to the hand-held power tool. The rechargeable battery pack is
preferably connected to the hand-held power tool via the at least
one interface device.
[0007] In addition, the rechargeable battery pack is provided in
particular for storing electrical energy and supplying at least one
electric motor of the hand-held power tool with electrical energy.
The at least one electric motor is preferably configured as an EC
motor. The rechargeable battery pack in particular includes at
least one energy store. The energy store includes at least one
accumulator cell, and advantageously includes multiple
interconnected accumulator cells. In addition, the rechargeable
battery pack in particular includes a, which may be one, housing in
which the energy store is situated and which is provided for
protecting the energy store.
[0008] In the present context, a "damping unit" is understood in
particular to mean a unit that is provided for greatly reducing a
transmission of an oscillation, of impacts, and/or of a vibration,
in particular of and in particular between various units, elements,
components, and/or parts of the hand-held power tool. The term
"greatly reducing" is understood to mean that the oscillation, the
impacts, and/or the vibration that act(s) on a component of the
hand-held power tool to be damped, in particular on the at least
one handle, is/are reduced by at least 50%, which may be by more
than 70%, and particularly preferably by more than 90%, in
particular compared to an undamped configuration. A damping rate of
oscillations, impacts, and/or vibrations of the at least one
damping unit is advantageously settable, in particular by an
operator. The at least one damping unit includes in particular at
least one, which may be exactly one, and in particular multiple,
elastic, damping, and/or resilient damping element(s) that greatly
reduce(s) the oscillations, impacts, and/or vibrations acting on at
least a portion of the hand-held power tool. The at least one
damping element in particular is situated between two portions of
the hand-held power tool that are to be damped relative to one
another with the aid of the at least one damping unit. An "elastic
element" is understood in particular to mean an element which is
repeatedly deformable without the element thus being mechanically
damaged or destroyed, and which, in particular after a deformation,
tends to automatically return to its original shape. The at least
one damping element may be configured as a mechanical, electrical,
hydraulic, and/or pneumatic damping element. In particular, the at
least one damping unit includes multiple damping elements having
different configurations. The at least one damping element is
preferably a toggle lever, a leaf spring, a compression spring, a
foam part, and/or a rubber part.
[0009] In the present context, "provided" is understood in
particular to mean specially configured, configured, and/or
equipped. Providing an object for a certain function is understood
in particular to mean that the object meets and/or carries out this
certain function in at least one use state and/or operating
state.
[0010] Moreover, it is provided that the at least one interface
device includes at least one exchange interface unit that is
configured to be detachably connectable to the at least one
rechargeable battery pack and to the at least one handle, and/or to
the at least one rechargeable battery pack and to the at least one
housing. In this way, exchange interface units having different
configurations may be coupled to the hand-held power tool, as the
result of which the hand-held power tool may advantageously be
easily retrofitted, for example, for different applications, in
particular for connection to different rechargeable battery packs,
for example for connection to an 18-V rechargeable battery pack and
to a 36-V rechargeable battery pack.
[0011] In the present context, "detachable" is understood in
particular to mean "nondestructively separable." The exchange
interface unit is preferably configured to be exchangeably
connectable to the at least one rechargeable battery pack and to
the at least one handle, and/or to the at least one rechargeable
battery pack and to the at least one housing. The at least one
interface device particularly preferably includes at least two
exchange interface units, which may behaving at least partially
different configurations, which are alternatively coupleable to the
hand-held power tool. The at least one exchange interface unit is
particularly preferably configured to be detachably connectable to
the at least one rechargeable battery pack and to the at least one,
in particular vibration-damped, handle. The exchange interface unit
is preferably fastenable to the at least one handle and/or to the
housing of the hand-held power tool with the aid of at least one
fastening element. The at least one fastening element is preferably
configured as a screw, clamping element, clip, or detent hook, or
in some other way that appears meaningful to those skilled in the
art. The at least one exchange interface unit is particularly
preferably configured to be detachably connectable to the at least
one rechargeable battery pack and to the at least one handle,
and/or to the at least one rechargeable battery pack and to the at
least one housing, without the use of tools. The at least one
fastening element may be situated on the at least one handle or on
the housing of the hand-held power tool and/or on the at least one
rechargeable battery pack.
[0012] A hand-held power tool, in particular a drilling hammer
and/or chisel hammer, that includes at least one housing, at least
one handle, and at least one interface device for establishing an
electrical and mechanical connection to at least one rechargeable
battery pack is preferably conceivable, the at least one interface
device including at least one exchange interface unit that is
configured to be detachably connectable to the at least one
rechargeable battery pack and to the at least one handle, and/or to
the at least one rechargeable battery pack and to the at least one
housing, which represents an alternative to the embodiment of the
hand-held power tool described herein.
[0013] Furthermore, it is provided that the hand-held power tool
includes at least one safety release unit for automatically
releasing the fastening of the at least one exchange interface unit
and/or of the at least one rechargeable battery pack when a
limiting value of at least one safety parameter is exceeded. In
particular, damage to the at least one rechargeable battery pack
coupled to the hand-held power tool, for example if the hand-held
power tool drops, may thus be avoided.
[0014] In the present context, "automatic" is understood in
particular to mean an active intervention that is at least
essentially, which may be completely, independent of the operator.
In the present context, a "safety parameter" is understood in
particular to mean a parameter that is relevant at least for
avoiding damage to the hand-held power tool and/or to the
rechargeable battery pack, or injury to the operator. The at least
one safety parameter is preferably formed by a force that acts on
the at least one rechargeable battery pack that is coupled to the
hand-held power tool, and/or on the interface device. The limiting
value of the at least one safety parameter is exceeded in
particular if the hand-held power tool drops.
[0015] A hand-held power tool, in particular a drilling hammer
and/or chisel hammer, that includes at least one housing, at least
one handle, and at least one interface device for establishing an
electrical and mechanical connection to at least one rechargeable
battery pack, and that includes at least one safety release unit
for automatically releasing the fastening of the at least one
exchange interface unit and/or of the at least one rechargeable
battery pack when a limiting value of at least one safety parameter
is exceeded, is conceivable which represents an alternative to the
embodiment of the hand-held power tool described herein.
[0016] In addition, it is provided that the hand-held power tool
includes at least one rechargeable battery damping unit for
supporting at least a portion of the at least one interface device
in a vibration-damped manner. A preferably low transmission of
impacts and vibrations to the at least one rechargeable battery
pack in an operating state of the hand-held power tool may thus be
achieved with a simple configuration, and damage to the at least
one rechargeable battery pack, in particular wear, caused by the
mechanical stress, on electrical contact elements and/or fastening
elements for connecting the at least one rechargeable battery pack
to the hand-held power tool may advantageously be avoided.
[0017] In the present context, a "rechargeable battery damping
unit" is understood in particular to mean a unit that is provided
for greatly reducing a transmission of an oscillation, of impacts,
and/or of a vibration, in particular of and in particular between
the hand-held power tool and the rechargeable battery pack that is
coupled to the hand-held power tool. The term "greatly reducing" is
understood to mean that the oscillation, the impacts, and/or the
vibration that act(s) on the at least one rechargeable battery
pack, in particular via the at least one interface device, is/are
reduced by at least 50%, which may be by more than 70%, and
particularly preferably by more than 90%, in particular compared to
an undamped configuration.
[0018] The at least one rechargeable battery damping unit includes
in particular at least one, which may be exactly one, and in
particular multiple, elastic, damping, and/or resilient damping
element(s) that greatly reduce(s) the oscillations, impacts, and/or
vibrations. The at least one damping element is in particular
situated between the hand-held power tool, in particular the at
least one handle of the hand-held power tool, and the at least one
interface device. An "elastic element" is understood in particular
to mean an element which is repeatedly deformable without the
element thus being mechanically damaged or destroyed, and which in
particular after a deformation tends to automatically return to its
original shape. The at least one damping element may be configured
as a mechanical, electrical, hydraulic, and/or pneumatic damping
element. The at least one damping element may be formed by a
spring, an elastomeric, rubber, and/or foam element, a linear
decoupling, or in some other way that appears meaningful to those
skilled in the art.
[0019] In addition, it is provided that the hand-held power tool
includes at least one rechargeable battery pack that is at least
partially electrically and mechanically coupleable to the at least
one interface device, a combined mass of the at least one handle
and of the at least one rechargeable battery pack being at least
1/8 of a total hand-held power tool mass. A preferably good and
balanced weight distribution of the hand-held power tool may thus
be achieved due to situating the at least one interface device on
the at least one handle.
[0020] The combined mass of the at least one rechargeable battery
pack and of the at least one handle is in particular at least 1/4,
which may be at least 1/3, and particularly preferably 1/2 of the
total hand-held power tool mass. The at least one handle and the at
least one rechargeable battery pack may particularly preferably be
provided as an absorption mass.
[0021] Furthermore, it is provided that the at least one interface
device includes at least one auxiliary function unit that provides
an auxiliary function in addition to the electrical and mechanical
coupling to at least one rechargeable battery pack. A preferably
broad application area and advantageously flexible usability of the
hand-held power tool may thus be achieved.
[0022] The at least one auxiliary function unit is preferably
configured, at least in part, to be fixedly connected to the at
least one exchange interface unit. The at least one auxiliary
function unit may be configured as an operating hours counter, as a
mounting, for example for a lighting unit such as a flashlight, for
at least one sensor and/or for a smart phone, as a suction unit, as
a control unit, in particular as an HMI interface, as an
illumination unit, as a measuring device, for example as a laser
distance meter for depth measurement, or as a line laser, and/or in
some other way that appears meaningful to those skilled in the art.
It is also conceivable for the at least one interface device to
include at least two auxiliary function units which have
configurations that are at least partially different, and which in
particular are alternatively coupleable to the hand-held power
tool. It is conceivable for the at least one auxiliary function
unit to be situatable on the housing, on the handle, on a housing
cover, and/or at some other location on the hand-held power tool
that appears meaningful to those skilled in the art. The at least
one auxiliary function unit is particularly preferably situatable
on the hand-held power tool in a vibration-damped manner. The
hand-held power tool may thus be retrofitted, for example, for
different applications, using a simple configuration.
[0023] In addition, it is provided that the hand-held power tool
includes at least one absorption unit that is at least partially
situated on the interface device. Good oscillation damping may
advantageously be achieved in this way.
[0024] In the present context, an "absorption unit" is understood
in particular to mean a unit which includes at least one absorption
mass that is provided for generating, in an operating state of the
hand-held power tool, a counter-oscillation with respect to the
oscillations and vibrations generated by the hand-held power tool,
and compensating for the oscillations and vibrations generated by
the hand-held power tool. The at least one absorption unit
preferably includes at least one absorption mass that is preferably
formed, at least partially, by the at least one rechargeable
battery pack and/or by the at least one handle.
[0025] Moreover, it is provided that the at least one safety
release unit includes at least one release element having an at
least partially elastic configuration. A cost-effective embodiment
of the at least one safety release unit may thus be achieved with a
simple configuration.
[0026] The term "elastic" is understood in particular to mean that
the at least one release element is repeatedly deformable without
the release element thus being mechanically damaged or destroyed,
and that the at least one release element, in particular after a
deformation, tends to automatically return to its original shape.
The at least one release element may be configured, at least in
part, as a spring, in particular as a leaf spring, as an elastic
subarea on the housing of the hand-held power tool and/or the at
least one exchange interface unit, as a wall thickness of the
housing of the hand-held power tool that is reduced, at least in
areas, as a predetermined breaking point on the housing of the
hand-held power tool and/or on the at least one exchange interface
unit, as a magnet, or in some other way that appears meaningful to
those skilled in the art. Arbitrary combinations of release
elements having different configurations, which appear meaningful
to those skilled in the art, are also conceivable. The at least one
release element in particular may be configured, at least in part,
in one piece with at least one mechanical fastening element and/or
with at least one electrical contact element.
[0027] Furthermore, it is provided that the hand-held power tool
includes at least one adjustment unit for adjusting at least one
damping parameter of the at least one damping unit. An
advantageously high level of operator comfort and a preferred
adaptation to different applications, to different operator
preferences, and/or to the at least one rechargeable battery pack
coupled to the hand-held power tool may be achieved in this
way.
[0028] The at least one adjustment unit is provided in particular
for adjusting at least one damping parameter of the at least one
damping unit, which may be by the operator of the hand-held power
tool. The at least one adjustment unit preferably includes at least
one control element that is provided for actuation, in particular
manual actuation, by the operator for adjusting the damping
parameter. The damping parameter is preferably formed by a spring
constant, a strength, a tension, and/or a pressure, in particular
of the at least one damping element of the at least one damping
unit. The at least one adjustment unit is provided for a mechanical
or electronic adjustment.
[0029] In addition, an exchange interface unit for the hand-held
power tool is provided. The hand-held power tool may thus be
retrofitted in an advantageously easy manner, for example for
different applications, in particular for connection to different
rechargeable battery packs, for example for connection to an 18-V
rechargeable battery pack and to a 36-V rechargeable battery pack,
and/or for connection to different auxiliary function units.
[0030] The hand-held power tool according to the present invention
is not intended to be limited to the use and specific embodiment
described above. In particular, for meeting a mode of operation
described herein, the hand-held power tool according to the present
invention may include a number of individual elements, components,
and units that differ from the number stated herein.
[0031] Further advantages result from the following description of
the drawings. Multiple exemplary embodiments of the present
invention are illustrated in the drawings. The drawings, the
description, and the claims contain numerous features in
combination. Those skilled in the art will also advantageously
consider the features individually and combine them into further
meaningful combinations.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] FIG. 1 shows a hand-held power tool according to the present
invention including an installed rechargeable battery pack, in a
schematic side view.
[0033] FIG. 2 shows a detail of the hand-held power tool in the
area of the installed rechargeable battery pack.
[0034] FIG. 3 shows an alternative embodiment of the hand-held
power tool including an installed rechargeable battery pack, in a
schematic side view.
[0035] FIG. 4 shows another alternative embodiment of the hand-held
power tool including an installed rechargeable battery pack, in a
schematic side view.
[0036] FIG. 5 shows another alternative embodiment of the hand-held
power tool including an interface device, in a schematic side
view.
[0037] FIG. 6 shows another alternative embodiment of the hand-held
power tool including an interface device, in a schematic side
view.
[0038] FIG. 7 shows another alternative embodiment of the hand-held
power tool including an interface device, in a schematic side
view.
[0039] FIG. 8 shows a detail of another alternative embodiment of
the hand-held power tool including an interface device, in a
schematic side view.
[0040] FIG. 9 shows a detail of another alternative embodiment of
the hand-held power tool including an interface device, in a
schematic side view.
[0041] FIG. 10 shows a detail of another alternative embodiment of
the hand-held power tool including an interface device, in a
schematic side view.
[0042] FIG. 11 shows a detail of another alternative embodiment of
the hand-held power tool including an interface device, in a
schematic side view.
DETAILED DESCRIPTION
[0043] A hand-held power tool 10a is schematically illustrated in
FIG. 1. Hand-held power tool 10a is configured as a hand-held
electric power tool. Hand-held power tool 10a is configured as a
rechargeable battery hand-held power tool. Hand-held power tool 10a
is formed by a drilling hammer and/or chisel hammer. However, other
embodiments of hand-held power tool 10a that appear meaningful to
those skilled in the art are also conceivable. Hand-held power tool
10a includes a tool holder 36a that is provided for accommodating
an insertion tool. Tool holder 36a is configured as a quick-change
tool holder. Hand-held power tool 10a also includes a handle 14a
for guiding hand-held power tool 10a by an operator. Handle 14a is
situated on a side of hand-held power tool 10a facing away from
tool holder 36a, viewed along a machining axis. Handle 14a is
configured as a U-shaped bow-type handle. It is also conceivable
for hand-held power tool 10a to additionally include an auxiliary
handle, which may be configured as a bar-shaped handle, for
example. Hand-held power tool 10a includes a drive unit for
driving, in an operating state, an insertion tool that is fastened
in tool holder 36a, and a housing 12a. Housing 12a is formed by two
housing shells. However, other embodiments of housing 12a that
appear meaningful to those skilled in the art are also
conceivable.
[0044] Hand-held power tool 10a also includes a damping unit 20a
that is provided for supporting handle 14a relative to housing 12a
in a vibration-damped manner. Damping unit 20a includes at least
one damping element 38a that is situated, at least partially,
between handle 14a and housing 12a of hand-held power tool 10a.
Damping unit 20a includes one damping element 38a. However, it is
also conceivable for damping unit 20a to include some other,
arbitrary number of damping elements 38a. Damping element 38a is
made of an elastomer and has an elastically deformable
configuration. Damping element 38a is made of rubber. Damping
element 38a is connected to housing 12a and to handle 14a. Handle
14a is connected to housing 12a via damping element 38a. However,
other embodiments of damping element 38a that appear meaningful to
those skilled in the art, for example made of foam, as a spring
element, in particular as a leaf spring or as a coil compression
spring, as a toggle lever, as a swivel joint, as a linear bearing,
as a hydraulic element, or as any arbitrary combination, are also
conceivable.
[0045] Hand-held power tool 10a also includes at least one
interface device 16a for establishing an electrical and mechanical
connection to the at least one rechargeable battery pack 18a.
Hand-held power tool 10a includes one interface device 16a that is
provided for electrically and mechanically connecting a
rechargeable battery pack 18a to hand-held power tool 10a.
Hand-held power tool 10a includes one interface device 16a.
However, it is also conceivable for hand-held power tool 10a to
include more than one interface device 16a, and in particular for
coupling hand-held power tool 10a, to more than one rechargeable
battery pack 18a. Interface device 16a is situated on handle 14a.
Interface device 16a is provided for detachably connecting
rechargeable battery pack 18a to handle 14a. Rechargeable battery
pack 18a is exchangeably connectable to hand-held power tool 10a
via interface device 16a. Rechargeable battery pack 18a, in a
fastened state to hand-held power tool 10a via interface device
16a, is provided for supplying hand-held power tool 10a with
electrical energy.
[0046] Interface device 16a includes at least one contact element,
not illustrated, for electrically coupling hand-held power tool 10a
to rechargeable battery pack 18a. Interface device 16a includes two
contact elements. However, some other number of contact elements is
also conceivable. The contact elements of interface device 16a have
a configuration that corresponds to contact elements of
rechargeable battery pack 18a. The contact elements of interface
device 16a are made of metal. The contact elements are electrically
connected to an electronics unit of hand-held power tool 10a.
Interface device 16a also includes at least one coupling unit 40a
that is provided for mechanically coupling hand-held power tool 10a
to rechargeable battery pack 18a. Interface device 16a includes one
coupling unit 40a. However, multiple coupling units 40a are also
conceivable. Coupling unit 40a includes at least one fastening
element 42a. Coupling unit 40a includes two fastening elements 42a.
However, some other number of fastening elements 42a is also
conceivable. Fastening elements 42a are provided for form-fit
fastening to housing 12a. Fastening elements 42a are provided for
form-fit fastening of rechargeable battery pack 18a. Fastening
elements 42a each have a half-shell configuration. Fastening
elements 42a have a corresponding configuration. Fastening elements
42a are connectable to one another via at least one screw. However,
other embodiments of fastening elements 42a that appear meaningful
to those skilled in the art are also conceivable.
[0047] Hand-held power tool 10a includes at least one rechargeable
battery damping unit 26a for supporting at least a portion of
interface device 16a in a vibration-damped manner. Hand-held power
tool 10a includes a rechargeable battery damping unit 26a for
supporting interface device 16a in a vibration-damped manner.
Rechargeable battery damping unit 26a includes at least one
rechargeable battery damping element 44a. Rechargeable battery
damping unit 26a includes two rechargeable battery damping elements
44a. However, some other number of rechargeable battery damping
elements 44a is also conceivable. Rechargeable battery damping
elements 44a in an installed state are each situated between handle
14a of hand-held power tool 10a and interface device 16a.
Rechargeable battery damping elements 44a are each made of an
elastomer. Rechargeable battery damping elements 44a in an
installed state rest directly against handle 14a of hand-held power
tool 10a and against fastening elements 42a of coupling unit 40a of
interface device 16a. Rechargeable battery damping elements 44a are
fixedly connected to handle 14a of hand-held power tool 10a.
Rechargeable battery damping elements 44a are integrally joined to
handle 14a of hand-held power tool 10a. Rechargeable battery
damping elements 44a are molded onto handle 14a of hand-held power
tool 10a. However, it is also conceivable for rechargeable battery
damping elements 44a to be joined to handle 14a in some other way
that appears meaningful to those skilled in the art, such as by an
adhesive bond.
[0048] For installing coupling unit 40a, fastening elements 42a are
placed on handle 14a around the side of rechargeable battery
damping elements 44a of rechargeable battery damping unit 26a,
viewed along a direction perpendicular to the machining axis of
hand-held power tool 10a, so that fastening elements 42a in an
installed state enclose rechargeable battery damping elements 44a.
For this purpose, fastening elements 42a each have a receiving area
that is provided for accommodating one of the rechargeable battery
damping elements 44a in a form-fit manner. Rechargeable battery
damping elements 44a each have a C-shaped cross section, and in an
installed state enclose a projection that is molded onto handle
14a. Fastening elements 42a each have a C-shaped cross section, and
in an installed state enclose rechargeable battery damping elements
44a of rechargeable battery damping unit 26a. Fastening elements
42a are subsequently fixed by screwing to one another, and are thus
fastened in a form-fit manner to handle 14a via rechargeable
battery damping elements 44a. Alternatively, it is also conceivable
for fastening elements 42a to be integrally joined to one another,
for example by an adhesive bond, or by a detent and/or plug-in
connection, or in some other way that appears meaningful to those
skilled in the art. For fastening rechargeable battery pack 18a to
hand-held power tool 10a, fastening elements 42a of coupling unit
40a each include a projection 46a, which in an installed state
engages in a form-fit manner with a recess that is introduced into
rechargeable battery pack 18a. Fastening elements 42a engage with
the recesses at opposite sides of rechargeable battery pack
18a.
[0049] In an installed state, rechargeable battery pack 18a is
supported relative to handle 14a in a vibration-damped manner via
rechargeable battery damping unit 26a. In addition, rechargeable
battery pack 18a in an installed state is supported relative to
housing 12a of hand-held power tool 10a in a vibration-damped
manner via damping unit 20a. In an operating state of hand-held
power tool 10a, a transmission of oscillations and vibrations from
hand-held power tool 10a to rechargeable battery pack 18a is thus
largely avoided. A combined mass of rechargeable battery pack 18a
and of handle 14a is at least 1/8 of a total hand-held power tool
mass. The combined mass of rechargeable battery pack 18a and of
handle 14a is at least 1/4 of a total hand-held power tool mass.
The combined mass of rechargeable battery pack 18a and of handle
14a is at least 1/3 of a total hand-held power tool mass. The
combined mass of rechargeable battery pack 18a and of handle 14a is
1/2 of a total hand-held power tool mass.
[0050] Further exemplary embodiments of the present invention are
shown in FIGS. 3 through 11. The following descriptions and the
drawings are limited essentially to the differences between the
exemplary embodiments, whereby in principle, with regard to
identically denoted components, in particular with regard to
components having identical reference numerals, reference may also
be made to the drawings and/or the description of the other
exemplary embodiments, in particular in FIGS. 1 and 2. To
distinguish between the exemplary embodiments, the letter a is
added as a suffix to the reference numerals in the exemplary
embodiment in FIGS. 1 and 2. The letter a is replaced by the
letters b through j in the exemplary embodiments in FIGS. 3 through
11.
[0051] FIG. 3 shows one alternative embodiment of hand-held power
tool 10b, including a rechargeable battery pack 18b that is
installed via an interface device 16b having an alternative
embodiment. Rechargeable battery pack 18b corresponds in large part
to rechargeable battery pack 18a already described. Hand-held power
tool 10b corresponds in large part to hand-held power tool 10a
already described. Hand-held power tool 10b includes a handle 14b
for guiding hand-held power tool 10b by an operator. Handle 14b is
configured as a U-shaped bow-type handle. Handle 14b is supported
on two areas of a housing 12b of hand-held power tool 10b.
Hand-held power tool 10b also includes a damping unit 20b that is
provided for supporting handle 14b relative to housing 12b in a
vibration-damped manner. Damping unit 20b includes at least one
damping element 38b that is situated, at least partially, between
handle 14b and housing 12b of hand-held power tool 10b. Damping
unit 20b includes two damping elements 38b. However, it is also
conceivable for damping unit 20b to include some other, arbitrary
number of damping elements 38b. One of damping elements 38b is
formed by a leaf spring, and the other of damping elements 38b is
configured as a toggle lever. Damping elements 38b are
schematically illustrated, and may also have a different
configuration that appears meaningful to those skilled in the art,
for example made of an elastomer, in particular of rubber, of foam,
or configured as a spring element, in particular as a coil spring,
as a swivel joint, as a linear bearing, as a hydraulic element, or
as any arbitrary combination. Damping elements 38b are connected to
housing 12b and to handle 14b. Handle 14b is connected to housing
12b via damping elements 38b.
[0052] Hand-held power tool 10b includes interface device 16b,
which corresponds to interface device 16a already described.
Interface device 16b is situated on handle 14b. Interface device
16b is provided for detachably connecting rechargeable battery pack
18b to handle 14b. Rechargeable battery pack 18b is exchangeably
connectable to hand-held power tool 10b via interface device 16b.
Interface device 16b includes two contact elements, not
illustrated, for electrically coupling hand-held power tool 10b to
rechargeable battery pack 18b. The contact elements of interface
device 16b have a configuration that corresponds to contact
elements of rechargeable battery pack 18b. Interface device 16b is
provided for movably supporting rechargeable battery pack 18b on
handle 14b. Interface device 16b includes a linear bearing for
displaceably supporting rechargeable battery pack 18b on handle
14b. Hand-held power tool 10b also includes at least one absorption
unit 30b that is at least partially situated on interface device
16b. Hand-held power tool 10b includes one absorption unit 30b.
However, hand-held power tool 10b may also include multiple
absorption units 30b. Absorption unit 30b is provided for
absorption of vibrations by at least one movably situated
absorption mass. Rechargeable battery pack 18b in an installed
state forms the absorption mass.
[0053] FIG. 4 shows another alternative embodiment of hand-held
power tool 10c, including a rechargeable battery pack 18c that is
installed via an interface device 16c having another alternative
embodiment. Hand-held power tool 10c and rechargeable battery pack
18c correspond in large part to hand-held power tool 10a already
described, and of rechargeable battery pack 18a already described.
Hand-held power tool 10c includes a handle 14c for guiding
hand-held power tool 10c by an operator. In addition, hand-held
power tool 10c includes interface device 16c that is provided for
mechanically and electrically coupling rechargeable battery pack
18c to hand-held power tool 10c. Interface device 16c is situated
on handle 14c. Interface device 16c includes an intermediate
housing 48c that is situated between handle 14c and a housing 12c
of hand-held power tool 10c. Handle 14c is coupled to housing 12c
of hand-held power tool 10c, on the one hand via a damping element
38c of a damping unit 20c, and on the other hand via a rechargeable
battery damping unit 26c and intermediate housing 48c of interface
device 16c.
[0054] Damping element 38c of damping unit 20c is made of an
elastomer and is elastically deformable. Damping element 38c is
fixedly connected to housing 12c of hand-held power tool 10c and to
handle 14c. Damping element 38c is integrally joined to housing 12c
of hand-held power tool 10c and to handle 14c. Rechargeable battery
damping unit 26c includes two rechargeable battery damping elements
44c. However, it is also conceivable for rechargeable battery
damping unit 26c to have some other, arbitrary number of
rechargeable battery damping elements 44c. Rechargeable battery
damping elements 44c are made of an elastomer. One of rechargeable
battery damping elements 44c is situated between handle 14c and
intermediate housing 48c, and the other of rechargeable battery
damping elements 44c is situated between intermediate housing 48c
and housing 12c of hand-held power tool 10c. Intermediate housing
48c is fixedly connected to handle 14c and to housing 12c of
hand-held power tool 10c via rechargeable battery damping unit 26c.
Intermediate housing 48c is integrally joined to handle 14c via
rechargeable battery damping unit 26c and to housing 12c of
hand-held power tool 10c. Intermediate housing 48c forms an
interface for detachably and exchangeably fastening rechargeable
battery pack 18c. Intermediate housing 48c is made of plastic.
[0055] Hand-held power tool 10c also includes at least one
adjustment unit 34c for adjusting at least one damping parameter of
damping unit 20c. Hand-held power tool 10c includes one adjustment
unit 34c. However, it is also conceivable for hand-held power tool
10c to include some other, arbitrary number of adjustment units
34c. Adjustment unit 34c is provided for adjusting the damping
parameter by the operator of hand-held power tool 10c. Adjustment
unit 34c includes at least one control element that is provided for
being actuated by the operator for adjusting the damping parameter.
Adjustment unit 34c includes one control element. However, multiple
control elements are also conceivable. The control element of
adjustment unit 34c is formed by a rotary knob. However, other
embodiments of the control element that appear meaningful to those
skilled in the art, such as a configuration as a slider, as a
keypad, or as a touchpad, are also conceivable. Adjustment unit 34c
is provided for mechanically adjusting the damping parameter.
However, it is also conceivable for adjustment unit 34c to be
provided for electronically adjusting the damping parameter, for
example via an electronics unit of hand-held power tool 10c.
[0056] FIG. 5 shows another alternative embodiment of hand-held
power tool 10d. Hand-held power tool 10d corresponds in large part
to hand-held power tool 10a already described. Hand-held power tool
10d includes an interface device 16d that is provided for
establishing an electrical and mechanical connection to a
rechargeable battery pack 18d. Interface device 16d includes at
least one exchange interface unit 22d that is configured to be
detachably connectable to rechargeable battery pack 18d and to a
handle 14d of hand-held power tool 10d, and/or to rechargeable
battery pack 18d and to a housing 12d of hand-held power tool 10d.
Interface device 16d includes one exchange interface unit 22d that
is configured to be detachably connectable to rechargeable battery
pack 18d and to a housing 12d of hand-held power tool 10d. However,
interface device 16d may also include some other number of exchange
interface units 22d that appears meaningful to those skilled in the
art. Exchange interface unit 22d is provided for electrically and
mechanically coupling rechargeable battery pack 18d to hand-held
power tool 10d. Exchange interface unit 22d is exchangeably
fastened to housing 12d of hand-held power tool 10d.
[0057] Exchange interface unit 22d includes at least one contact
element, not illustrated, for electrically contacting at least one
corresponding contact element of hand-held power tool 10d. Exchange
interface unit 22d includes two contact elements for electrically
contacting two contact elements of hand-held power tool 10d.
However, some other number of contact elements is also conceivable.
The contact elements of hand-held power tool 10d and the contact
elements of exchange interface unit 22d are made of metal. Exchange
interface unit 22d includes at least one further contact element,
likewise not illustrated, for electrically contacting at least one
corresponding contact element of rechargeable battery pack 18d.
Exchange interface unit 22d includes two further contact elements
for electrically contacting two contact elements of rechargeable
battery pack 18d. However, some other number of contact elements is
also conceivable. The contact elements of rechargeable battery pack
18d and the further contact elements of exchange interface unit 22d
are made of metal. In an installed state, exchange interface unit
22d electrically connects hand-held power tool 10d to rechargeable
battery pack 18d.
[0058] Interface device 16d also includes at least one coupling
unit 40d that is provided for mechanically coupling exchange
interface unit 22d to hand-held power tool 10d, and/or exchange
interface unit 22d to rechargeable battery pack 18d. Interface
device 16d includes one coupling unit 40d. However, multiple
coupling units 40d are also conceivable. Coupling unit 40d is
provided for detachably fastening exchange interface unit 22d to
hand-held power tool 10d, and/or exchange interface unit 22d to
rechargeable battery pack 18d. Coupling unit 40d includes at least
one fastening element 42d. Coupling unit 40d includes two fastening
elements 42d for mechanically fastening exchange interface unit 22d
to housing 12d of hand-held power tool 10d. However, a different
number of fastening elements 42d is also conceivable. Fastening
elements 42d are each configured as a screw. In an installed state
of exchange interface unit 22d, fastening elements 42d configured
as screws each extend through a recess that is introduced into
exchange interface unit 22d, and are each screwed into a thread
provided on housing 12d of hand-held power tool 10d. A head area of
fastening elements 42d configured as screws in each case rests
against exchange interface unit 22d on a side facing away from
housing 12d of hand-held power tool 10d, and thus prevents exchange
interface unit 22d from slipping out of place relative to housing
12d of hand-held power tool 10d.
[0059] In an installed state of exchange interface unit 22d,
rechargeable battery pack 18d may be mounted on exchange interface
unit 22d. For mounting rechargeable battery pack 18d on exchange
interface unit 22d, rechargeable battery pack 18d is coupled to at
least one further fastening element, not illustrated, of coupling
unit 40d that is situated on exchange interface unit 22d. The at
least one further fastening element may be formed by a track, a
detent element, a screw element, and/or in some other way that
appears meaningful to those skilled in the art.
[0060] Interface device 16d also includes at least one auxiliary
function unit 28d that provides an auxiliary function in addition
to the electrical and mechanical coupling to rechargeable battery
pack 18d. Interface device 16d includes one auxiliary function unit
28d. However, it is also conceivable for interface device 16d to
include multiple auxiliary function units 28d which in particular
have different configurations.
[0061] Auxiliary function unit 28d is configured as an operating
hours counter. Alternatively or additionally, auxiliary function
unit 28d may be configured as a mounting, for example for a
lighting unit, in particular for a flashlight, as a suction unit,
as a control unit, in particular as an HMI interface, and/or in
some other way that appears meaningful to those skilled in the art.
Auxiliary function unit 28d is electrically and mechanically
connectable to hand-held power tool 10d via exchange interface unit
22d.
[0062] Exchange interface unit 22d may be replaced by some other
exchange interface unit, not illustrated, which likewise
corresponds to the contact elements of hand-held power tool 10d.
Exchange interface unit 22d and the other exchange interface unit
correspond to one another in large part. Exchange interface unit
22d and the other exchange interface unit are provided for
corresponding to different rechargeable battery packs 18d.
Hand-held power tool 10d may thus be easily retrofitted for
coupling to different rechargeable battery packs 18d. Alternatively
or additionally, auxiliary function unit 28d may be exchanged along
with exchange interface unit 22d, so that hand-held power tool 10d
may be easily retrofitted for different applications.
[0063] FIG. 6 shows a hand-held power tool 10e already described,
and illustrated in FIG. 5, including an interface device 16e having
an alternative embodiment. Interface device 16e includes an
exchange interface unit 22e that is configured to be detachably
connectable to a rechargeable battery pack 18e and to a housing 12e
of hand-held power tool 10e. Exchange interface unit 22e is
provided for electrically and mechanically coupling rechargeable
battery pack 18e to hand-held power tool 10e. Exchange interface
unit 22e is exchangeably fastenable to housing 12e of hand-held
power tool 10e. Interface device 16e differs from interface device
16d, already described, solely in the fastening of exchange
interface unit 22e to housing 12e of hand-held power tool 10e.
[0064] Interface device 16e includes a coupling unit 40e that is
provided for mechanically coupling exchange interface unit 22e to
hand-held power tool 10e. Coupling unit 40e is provided for
detachably fastening exchange interface unit 22e to hand-held power
tool 10e, and exchange interface unit 22e to rechargeable battery
pack 18e. Coupling unit 40e includes two fastening elements 42e',
42e'' for mechanically fastening exchange interface unit 22e to
housing 12e of hand-held power tool 10e. However, a different
number of fastening elements 42e is also conceivable. One of
fastening elements 42e' is configured as a screw. In an installed
state of exchange interface unit 22e, fastening element 42e'
configured as a screw extends through a recess that is introduced
into exchange interface unit 22e, and is screwed into a thread that
is provided on housing 12e of hand-held power tool 10e. A head area
of fastening element 42e' configured as a screw rests against
exchange interface unit 22e on a side facing away from housing 12e
of hand-held power tool 10e, and thus prevents exchange interface
unit 22e from slipping out of place relative to housing 12e of
hand-held power tool 10e. The other of fastening elements 42e'' is
formed by a projection that is situated on exchange interface unit
22e, and which in an installed state of exchange interface unit 22e
engages with a hook element 50e, having a corresponding
configuration, situated on housing 12e of hand-held power tool 10e.
For installation, in a first step, fastening element 42e'' which is
configured as a projection is suspended in hook element 50e
situated on housing 12e of hand-held power tool 10e.
[0065] Exchange interface unit 22e is subsequently fixed to housing
12e of hand-held power tool 10e via fastening element 42e'
configured as a screw.
[0066] FIG. 7 shows a hand-held power tool 10f already described,
and illustrated in FIG. 5, including a further interface device 16f
having an alternative embodiment. Interface device 16f differs from
interface device 16d, already described, solely in the fastening of
an exchange interface unit 22f to a housing 12f of hand-held power
tool 10f. Interface device 16f includes a coupling unit 40f that is
provided for mechanically coupling exchange interface unit 22f to
hand-held power tool 10f. Coupling unit 40f is provided for
detachably fastening exchange interface unit 22f to hand-held power
tool 10f. Coupling unit 40f includes two fastening elements 42f',
42f'' for mechanically fastening exchange interface unit 22f to
housing 12f of hand-held power tool 10f. However, a different
number of fastening elements 42f is also conceivable. Fastening
elements 42f', 42f'' of coupling unit 40f are formed by
corresponding tracks. One of fastening elements 42f' is situated on
exchange interface unit 22f, and the other of fastening elements
42f'' is situated on housing 12f of hand-held power tool 10f. For
installing exchange interface unit 22f on housing 12f of hand-held
power tool 10f, exchange interface unit 22f is shifted relative to
housing 12f of hand-held power tool 10f, along a machining axis,
corresponding fastening elements 42f', 42f'' being engaged in a
form-fit manner and moved relative to one another until reaching an
end position. Coupling unit 40f includes a stop, not illustrated,
that is provided for delimiting the relative movement of exchange
interface unit 22f relative to housing 12f of hand-held power tool
10f and for fixing the end position.
[0067] FIG. 8 shows a detail of a hand-held power tool 10g already
described, and illustrated in FIG. 5, including a further interface
device 16g having an alternative embodiment. Interface device 16g
differs from interface device 16d, already described, solely in the
fastening of an exchange interface unit 22g to a housing 12g of
hand-held power tool 10g. Interface device 16g includes a coupling
unit 40g that is provided for mechanically coupling and detachably
fastening exchange interface unit 22g to hand-held power tool 10g.
Coupling unit 40g includes at least one fastening element 42g.
Coupling unit 40g includes two fastening elements 42g. However, a
different number of fastening elements 42g is also conceivable.
Fastening elements 42g each have a half-shell configuration.
Fastening elements 42g are each fastened via a screw to housing 12g
of hand-held power tool 10g. In an installed state, each of the
screws engages through a recess that is introduced into each of
fastening elements 42g, and is screwed into a thread in housing 12g
of hand-held power tool 10g. Fastening elements 42g each include a
projection 46g that is provided for fastening rechargeable battery
pack 18g in a form-fit manner. In an installed state of
rechargeable battery pack 18g, projections 46g of fastening
elements 42g engage with corresponding recesses that are introduced
into housing 12g of rechargeable battery pack 18g, and fix
rechargeable battery pack 18g relative to exchange interface unit
22g in a form-fit manner. However, other embodiments of coupling
unit 40g and in particular of fastening elements 42g, in particular
with regard to a number and/or configuration of projections 46g or
recesses, that appear meaningful to those skilled in the art are
also conceivable. Exchange interface unit 22g also includes a
contact unit for electrically connecting rechargeable battery pack
18g to hand-held power tool 10g in an installed state. The contact
unit has a configuration that is known to those skilled in the art,
and is not shown here in greater detail.
[0068] FIG. 9 shows a detail of a hand-held power tool 10h already
described, and illustrated in FIG. 5, including a further interface
device 16h having an alternative embodiment. Interface device 16h
differs from interface device 16d, already described, solely in the
fastening of an exchange interface unit 22h to a housing 12h of
hand-held power tool 10h. Exchange interface unit 22h is provided
for electrically and mechanically connecting a rechargeable battery
pack 18h to hand-held power tool 10h. Hand-held power tool 10h
includes at least one safety release unit 24h for automatically
releasing the fastening of exchange interface unit 22h and/or of
rechargeable battery pack 18h when a limiting value of at least one
safety parameter is exceeded. Hand-held power tool 10h includes one
safety release unit 24h. However, it is also conceivable for
hand-held power tool 10h to include multiple safety release units
24h. Safety release unit 24h is provided for automatically
releasing the fastening of exchange interface unit 22h to housing
12h of hand-held power tool 10h, for example if hand-held power
tool 10h drops. The safety parameter is formed by a force that acts
on the fastening of exchange interface unit 22h to housing 12h of
hand-held power tool 10h. However, other embodiments of the safety
parameter that appear meaningful to those skilled in the art are
also conceivable. Safety release unit 24h includes at least one
release element 32h that has an at least partially elastic
configuration. Safety release unit 24h includes one release element
32h. However, safety release unit 24h may also include multiple
release elements 32h. Release element 32h is formed by a spring.
Release element 32h is formed by a leaf spring. Release element 32h
also forms a contact element for electrically connecting hand-held
power tool 10h to rechargeable battery pack 18h. Release element
32h is situated on housing 12h of hand-held power tool 10h.
However, it is also conceivable for release element 32h to be
situated on exchange interface unit 22h.
[0069] Interface device 16h includes a coupling unit 40h that is
provided for mechanically coupling exchange interface unit 22h to
hand-held power tool 10h. Coupling unit 40h is provided for
detachably fastening exchange interface unit 22h to hand-held power
tool 10h, and exchange interface unit 22h to rechargeable battery
pack 18h. Coupling unit 40h includes two fastening elements 42h',
42h'' for mechanically fastening exchange interface unit 22h to
housing 12h of hand-held power tool 10h. However, a different
number of fastening elements 42h is also conceivable. One of
fastening elements 42h' is formed by a projection which is situated
on exchange interface unit 22h, and which in an installed state of
exchange interface unit 22h engages with a hook element 50h, having
a corresponding configuration, situated on housing 12h of hand-held
power tool 10h. The other of fastening elements 42h'' is formed by
release element 32h.
[0070] For installation, in a first step, fastening element 42h'
configured as a projection is suspended in hook element 50h
situated on housing 12h of hand-held power tool 10h. Exchange
interface unit 22h is subsequently swiveled until exchange
interface unit 22h rests against fastening element 42h'' that is
formed by release element 32h. Exchange interface unit 22h is
pressed against fastening element 42h'' formed by release element
32h, until fastening element 42h'' formed by release element 32h
locks into a corresponding recess situated on exchange interface
unit 22h. In the installed state, exchange interface unit 22h is
secured against swiveling back, and thus secured relative to
housing 12h of hand-held power tool 10h, by an elastic force of
fastening element 42h'' that is formed by release element 32h.
Rechargeable battery pack 18h is fastened to exchange interface
unit 22h in a manner already described. If hand-held power tool 10h
drops, fastening element 42h'' that is formed by release element
32h automatically detaches from the corresponding recess in
exchange interface unit 22h, as the result of which rechargeable
battery pack 18h that is coupled to exchange interface unit 22h is
separated from hand-held power tool 10h, which is thus intended to
prevent damage to rechargeable battery pack 18h.
[0071] FIG. 10 shows a detail of a hand-held power tool 10i already
described, and illustrated in FIG. 5, including a further interface
device 16i having an alternative embodiment. Interface device 16i
differs from interface device 16d, already described, solely in the
fastening of an exchange interface unit 22i to a housing 12i of
hand-held power tool 10i. Exchange interface unit 22i is provided
for electrically and mechanically connecting a rechargeable battery
pack 18i to hand-held power tool 10i. Hand-held power tool 10i
includes at least one safety release unit 24i for automatically
releasing the fastening of exchange interface unit 22i and/or of
rechargeable battery pack 18i when a limiting value of at least one
safety parameter is exceeded. Safety release unit 24i is provided
for automatically releasing the fastening of exchange interface
unit 22i on housing 12i of hand-held power tool 10i, for example if
hand-held power tool 10i drops. Safety release unit 24i includes at
least one release element 32i that has an at least partially
elastic configuration. Safety release unit 24i includes two release
elements 32i. Release elements 32i are situated on housing 12i of
hand-held power tool 10i. However, it is also conceivable for
release element 32i to be situated on exchange interface unit 22i.
Release elements 32i are fixedly connected to housing 12i of
hand-held power tool 10i. Release elements 32i are integrally
joined to housing 12i of hand-held power tool 10i. Release elements
32i have a one-piece configuration with housing 12i of hand-held
power tool 10i.
[0072] Interface device 16i includes a coupling unit 40i that is
provided for mechanically coupling exchange interface unit 22i to
hand-held power tool 10i. Coupling unit 40i is provided for
detachably fastening exchange interface unit 22i to hand-held power
tool 10i. Coupling unit 40i includes two fastening elements 42i for
mechanically fastening exchange interface unit 22i to housing 12i
of hand-held power tool 10i. Fastening elements 42i each have a
hook-shaped configuration. Fastening elements 42i are fixedly
connected to housing 12i of hand-held power tool 10i. Fastening
elements 42i are integrally joined to housing 12i of hand-held
power tool 10i. Fastening elements 42i have a one-piece
configuration with housing 12i of hand-held power tool 10i.
[0073] Fastening elements 42i and release elements 32i have a
one-piece configuration. Release elements 32i are formed by an area
of housing 12i of hand-held power tool 10i having a reduced
material thickness. Hook-shaped fastening elements 42i thus have a
configuration that is elastically deflectable for installation and
for automatically releasing exchange interface unit 22i.
[0074] FIG. 11 illustrates release elements 32j that are formed not
from an area of a housing 12j of a hand-held power tool 10j having
a reduced material thickness, but, rather, from an elastically
deformable material that is integrally joined to housing 12j of
hand-held power tool 10j and to fastening elements 42j. Release
elements 32j are made of an elastomer. Release elements 32j are
configured as a PTE bridge. Release elements 32j are
injection-molded onto housing 12j of hand-held power tool 10j and
onto each of fastening elements 42j. Release elements 32j connect
each of fastening elements 42j to housing 12j of hand-held power
tool 10j.
* * * * *