U.S. patent application number 15/580800 was filed with the patent office on 2018-08-16 for pull-out guide and domestic appliance.
This patent application is currently assigned to Paul Hettich GmbH & Co. KG. The applicant listed for this patent is Paul Hettich GmbH & Co. KG. Invention is credited to Edgar FROBIETER, Friedrich MEYER, Daniel REHAGE, Daniel REIDT, Michael VOELKER.
Application Number | 20180231257 15/580800 |
Document ID | / |
Family ID | 56112978 |
Filed Date | 2018-08-16 |
United States Patent
Application |
20180231257 |
Kind Code |
A1 |
REHAGE; Daniel ; et
al. |
August 16, 2018 |
PULL-OUT GUIDE AND DOMESTIC APPLIANCE
Abstract
A pull-out guide, in particular for domestic appliances,
comprising a stationary guide rail and a running rail which is
movably supported relative to the guide rail, on which a moving
push element is supported, wherein at least one stop for limiting
the movement of the push element relative to the running rail is
provided on the running rail, wherein the at least one stop for the
push element is designed in a resilient manner.
Inventors: |
REHAGE; Daniel; (Chemnitz,
DE) ; REIDT; Daniel; (Herford, DE) ; MEYER;
Friedrich; (Bohmte, DE) ; FROBIETER; Edgar;
(Hasbergen, DE) ; VOELKER; Michael; (Kirchlengern,
DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Paul Hettich GmbH & Co. KG |
Kirchlengern |
|
DE |
|
|
Assignee: |
Paul Hettich GmbH & Co.
KG
Kirchlengern
DE
|
Family ID: |
56112978 |
Appl. No.: |
15/580800 |
Filed: |
June 8, 2016 |
PCT Filed: |
June 8, 2016 |
PCT NO: |
PCT/EP2016/063076 |
371 Date: |
December 8, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F24C 15/168 20130101;
A47B 88/473 20170101; A47B 88/477 20170101; A47B 2210/0091
20130101; A47B 2210/0018 20130101; A47B 88/40 20170101 |
International
Class: |
F24C 15/16 20060101
F24C015/16; A47B 88/477 20060101 A47B088/477 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 11, 2015 |
DE |
20 2015 103 067.3 |
Claims
1. A pull-out guide (1) for domestic appliances, comprising a
stationary guide rail and a running rail (2) which is movably
mounted relative to the guide rail and on which a moving push
element (14) is supported, wherein at least one stop (5, 5', 13,
20, 25, 30, 40) for limiting the movement of the push element (14)
relative to the running rail (2) is provided on the running rail
(2), wherein the at least one stop (5, 5', 13, 20, 25, 30, 40) for
the push element (14) is designed in a resilient manner.
2. The pull-out guide according to claim 1, wherein the spring
travel of a resilient stop element (8, 13, 22, 28, 35, 46) when
struck by the push element (14) lies in a range between 0.5 mm to
10 mm, in particular 1 mm to 8 mm.
3. The pull-out guide according to claim 1, wherein the stop (5,
5', 13, 20, 25, 30, 40) is made of a metal sheet.
4. The pull-out guide according to claim 1, wherein the stop (5,
5', 13, 20, 25, 30, 40) is fixed in place adjacent to an end face
of the running rail (2).
5. The pull-out guide according to claim 1, wherein the stop (5,
5', 13, 20, 25, 30, 40) is formed integrally with a cover (6, 21,
27, 32, 42) which covers an end face of the pull-out guide (1).
6. The pull-out guide according to claim 1, wherein the stop (5,5',
13, 20, 25, 30, 40) constitutes an elastic travel limiter for the
relative movement of the running rail relative to the guide rail or
centre rail.
7. The pull-out guide according to claim 1, wherein a resilient
stop (5, 5', 13, 20, 25, 30, 40) is provided in each case on
opposite sides of the running rail (2).
8. The pull-out guide according to claim 1, wherein the stop (5,
5', 13, 20, 25, 30, 40) is welded, screwed or fastened in some
other way to the running rail (2).
9. The pull-out guide according to claim 1, wherein the stop (5,
5', 13, 20, 25, 30, 40) has one or more cutouts or is locally
weakened in order to increase the resilient effect.
10. The pull-out guide according to claim 1, wherein the stop (5,
5', 13, 20, 25, 30, 40) is latched onto the running rail (2).
11. The pull-out guide according to claim 1, wherein a resilient
stop (5, 5', 13, 20, 25, 30, 40) on one side of the running rail
(2) is provided integrally with a latching mechanism (9) for
releasably fixing the running rail (2) in a pulled-out
position.
12. A domestic appliance comprising at least one pull-out guide (1)
according to claim 1.
13. The domestic appliance according to claim 12, wherein a
pull-out guide (1) is provided on opposite sides of the push
element (14) and at least one of the two pull-out guides (1) has a
resilient stop (5, 5', 13, 20, 25, 30, 40).
14. The domestic appliance according to claim 12, wherein the push
element (14) is designed as a support for food to be cooked.
Description
[0001] The present invention relates to a pull-out guide, in
particular for domestic appliances, comprising a stationary guide
rail and a running rail which is movably mounted relative to the
guide rail and on which a moving push element is supported, wherein
at least one stop for limiting the movement of the push element
relative to the running rail is provided on the running rail, and
to a domestic appliance.
[0002] DE 20 2006 009 809 U1 discloses a pull-out guide comprising
a running rail, to which a moulded part is securely clamped with a
form fit, said moulded part protruding beyond the running rail on
the upper side and forming a stop for a support for food to be
cooked. With such stops, which can also be configured as plugs, the
problem exists that, during opening and closing, loud impact noise
may be generated by baking sheets resting thereon. This unsettles
the user since it is not immediately apparent whether the noise is
due to operator error.
[0003] DE 20 2008 006 755 U1 discloses a damper for decelerating
the movement of a running rail relative to a centre rail. A bellows
is used as the damper so that the displacement movement of the
running rail is decelerated. Although such a deceleration of the
movement of the running rail might avoid loud impact noise, the use
of a bellows is nevertheless unsuitable due to the heat in ovens
and possible soiling. In addition, impact noise may also occur if
the running rail is decelerated too abruptly.
[0004] It is therefore an object of the present invention to
provide a pull-out guide and a domestic appliance which ensure more
convenient handling with regard to the above problems.
[0005] This object is achieved by a pull-out guide having the
features of claim 1 and by a domestic appliance having the features
of claim 12.
[0006] In the pull-out guide according to the invention, the at
least one stop for the push element is designed in a resilient
manner. As a result, in the event of a rapid displacement movement
of the running rail of the pull-out guide and abrupt stopping, a
push element located on the running rail can be decelerated by way
of the resilient stop without any loud impact noise being
generated. This improves the handling of the pull-out guide and
leads to a reduction in wear at the points of contact.
[0007] Preferably, the spring travel of a resilient stop element
when struck by the push element is designed such that it lies in a
range between 0.5 mm to 10 mm, in particular 1 mm to 8 mm.
Depending on the intended use of the pull-out guide, it can be
assumed that the push element in the loaded state has for example a
weight between 1 kg to 6 kg and will be moved at a speed between
0.5 to 2 m/s in order then to be stopped abruptly. In this case,
the resilient stop element should be moved to decelerate the push
element over a certain distance of the spring travel.
[0008] Preferably, the stop is made of a metal sheet. As a result,
the stop can also be used on domestic appliances, such as
ovens.
[0009] In a further embodiment, the stop is fixed in place on an
end face of the running rail. As a result, the stop can on the one
hand perform the deceleration function for the push element and on
the other hand can form a cover for the running rail in order to
better protect the inner workings of the pull-out guide against
soiling. Furthermore, the resilient stop can also be used as an
elastic travel limiter for the relative movement of the running
rail relative to the guide rail or centre rail in that, when moving
the running rail into the domestic appliance for example, the stop
comes to bear against the end face of the guide rail or centre rail
when the end position is reached.
[0010] If the push element is to be decelerated both in the
pull-out direction and in the push-in direction, a resilient stop
may be provided in each case on opposite sides of the running
rail.
[0011] The stop may be welded, latched or otherwise mechanically
fastened to the running rail, or fastened thereto by means of an
adhesive.
[0012] Preferably, one resilient stop of the pull-out guide is
formed integrally with a latching mechanism for releasably fixing
the running rail in a pulled-out position. As a result, the number
of components for the pull-out guide can be kept small.
[0013] According to the invention, the pull-out guide is used on a
domestic appliance, wherein preferably a pull-out guide is provided
in each case on opposite sides of the push element and only one of
the two pull-out guides has a resilient stop. It has been found
that one resilient stop is already sufficient for decelerating the
push element. Optionally, of course, both pull-out guides may each
have one or two resilient stops.
[0014] The invention will be explained in greater detail below on
the basis of a number of exemplary embodiments and with reference
to the appended drawings, in which:
[0015] FIG. 1 shows a perspective view of a pull-out guide
according to the invention;
[0016] FIG. 2 shows a perspective view of the pull-out guide of
FIG. 1 with a support for food to be cooked;
[0017] FIGS. 3 and 4 show two views of the pull-out guide of FIG. 2
in different load situations;
[0018] FIGS. 5A and 5B show two views of a pull-out guide according
to the invention with a modified stop;
[0019] FIG. 6 shows a perspective view of the stop of FIG. 5;
[0020] FIG. 7 shows a detail view of a pull-out guide with a
further exemplary embodiment of a stop;
[0021] FIG. 8 shows a rear view of the pull-out guide of FIG.
7;
[0022] FIG. 9 shows a plan view of the pull-out guide of FIG.
7;
[0023] FIG. 10 shows an enlarged view of the pull-out guide of FIG.
7 in a flexed stop position;
[0024] FIG. 11 shows a detail view of the stop of the pull-out
guide of FIG. 7;
[0025] FIG. 12 shows a view of a modified stop for a pull-out
guide;
[0026] FIG. 13 shows a perspective view of a modified stop for a
pull-out guide, and
[0027] FIGS. 14A and 14B show two views of a modified stop for a
pull-out guide.
[0028] A pull-out guide 1 comprises a guide rail which can be
fastened to a carcass of a piece of furniture or of a domestic
appliance or to another component. A running rail 2 is mounted on
the guide rail in a linearly movable manner, for example via
rolling elements or sliding elements, wherein optionally one or
more centre rails may be provided between the guide rail and the
running rail 2. The pull-out guide 1 may thus be configured as a
partial pull-out or as a full pull-out.
[0029] The pull-out guide 1 can be fastened to the stationary guide
rail via a front fastening part 3 and a rear fastening part 4, for
example to a bar of a side grating in an oven. Such fastening parts
3 and 4, which engage around a bar of a side grating in the manner
of a clamp, are known and will therefore not be explained in
detail.
[0030] On the running rail 2 of the pull-out guide 1, a stop 5 is
arranged on the front end face, said stop having a panel-shaped
cover 6 and a resilient stop element 8 in the form of a bendable
web which protrudes beyond the upper side of the running rail 2.
Also formed on the stop 5 is a retaining web 7 which can be
fastened to the running rail 2, for example mechanically or by
welding or gluing.
[0031] Provided at the rear side of the running rail 2 is a
latching mechanism 9 which is secured to one side of the running
rail 2 via a retaining section 10, for example by welding. The
latching mechanism 9 comprises a protrusion 11 which engages in a
cutout 12 on the running rail 2 and can be latched there between
two rolling elements in a maximum pulled-out position. The latching
mechanism 9 further comprises an integrally formed resilient stop
element 13 which protrudes beyond the upper side of the running
rail 2 and keeps in the desired position a push element which is
positioned on the running rail 2. The push element is positioned
between the resilient stop elements 8 and 13.
[0032] FIG. 2 shows the pull-out guide 1, on which there now rests
a push element 14 in the form of a support for food to be cooked,
said support comprising a dish-shaped trough 15 and a laterally
protruding edge 16. The edge 16 is supported on the upper side of
the running rail 2 and is arranged between the resilient stop
elements 8 and 13.
[0033] In FIG. 3, the resilient stop element 8 of the stop 5 is
shown in an unloaded position. The edge 16 bears against the
resilient stop element 8, which is positioned at a distance L from
an end face of the running rail 2.
[0034] If the push element is now moved rapidly in the opening
direction as far as a maximum pulled-out position and then abruptly
decelerated, the edge 16 of the push element is able to bend the
resilient stop element 8, as illustrated in FIG. 4. As a result,
the distance between the edge 16 and an end face of the running
rail 2 is shortened to the dimension I, it being possible for the
spring travel of the stop element 8 to lie in a range from 1 mm to
8 mm for example.
[0035] The stop 5 may be made of a bent metal sheet, and the stop
element 8 may accordingly be resilient, wherein for the resilient
design it is possible to use bending forces, torsional forces or
other forces to provide a certain flexibility of the protruding
stop element 8.
[0036] FIGS. 5A and 5B show a modified stop 5' which, in a manner
similar to the preceding exemplary embodiment, is fastened to the
running rail 2 by means of the retaining web 7. In addition, a hook
17 is integrally formed on the cover 6, which hook engages by means
of a protrusion 18 in a cutout on one side of the running rail 2.
The cutout is dimensioned to be so large that the protrusion 18 can
move to a limited extent within the cutout. As in the preceding
exemplary embodiment, the resilient stop element 8 can decelerate
the push element 14. In doing so, the protrusion 18, upon maximum
elastic deflection, comes to bear against an edge within the cutout
of the running rail 2, so that plastic deformation of the stop 5'
is avoided.
[0037] In a further embodiment of the invention, it is also
possible that the stop is latched onto the running rail in a
form-fitting manner, so that there is no need for a further
material or mechanical connection.
[0038] The stop 5' is shown in detail in FIG. 6, the stop 5' being
made of a bent and stamped metal sheet. Manufacture from a bendable
plastic is also possible.
[0039] FIGS. 7 to 9 show a modified stop 20 which is fastened to a
running rail 2. The stop 20 may be fastened both to a front end
face and also to a rear end face of the running rail 2 or only to
one of the two faces. The stop 20 comprises a panel-shaped cover 21
which closes an open end face of the running rail 2. The cover 21
may be welded or glued to the running rail 2 or fastened thereto
via mechanical means. Projecting from the cover 21 is a web-shaped
resilient stop element 22 which protrudes beyond an upper side of
the running rail 2 and bears against an edge 16 of the push element
14. If the pull-out guide with the running rail 2 is then moved
abruptly in the opening and/or closing direction, abrupt stopping
of the running rail 2 may occur upon reaching the end position, and
this is compensated by the resilient stop element 22 which can be
deflected through a spring travel from the starting position in
order to avoid loud impact noise.
[0040] In FIG. 10, the resilient stop element 22 is shown in a
deflected position, in which the edge 16 bends the stop element 22.
The resilient stop element 22 is designed here as a U-shaped web
which can bear against the edge 16 at two contact areas 23.
[0041] The stop 20 is shown in detail in FIG. 11, said stop being
made of a bent and stamped metal sheet. Protruding at an angle from
the cover 21 is a retaining web 24 which is fastened to a side wall
of the running rail 2, for example by welding.
[0042] FIG. 12 shows a modified stop 25 which can be fastened to a
side wall of a running rail 2 via a retaining web 26. The stop 25
comprises a rear cover 27, which covers an opening of the running
rail 2, and an upwardly protruding resilient stop element 28, which
is designed as a flexible web. Otherwise, the functionality of the
stop 25 is the same as in the preceding exemplary embodiments.
[0043] FIG. 13 shows a stop 30 having a retaining web 31 which can
be fastened to a side wall of the running rail 2, for example by
welding or gluing. Extending from the retaining web 31 is a rear
cover 32 which covers an opening of the running rail 2 at an end
face. Provided on the side opposite the retaining web 31 is a bend
33 which bends the metal sheet through approximately 180.degree.
and which is formed integrally with a panel-shaped resilient stop
element 35 which is formed on a panel 34 and protrudes upwards
beyond a running rail 2 to form a resilient stop for a push element
14. If the stop 30 is fastened at the retaining web 31, a
particularly flexible resilient mounting of the stop element 35 is
achieved due to the numerous bends on the metal sheet.
[0044] FIGS. 14A and 14B show a further exemplary embodiment of a
stop 40 which can be fastened to a side wall of a running rail 2
via a retaining web 41. The stop 40 comprises a rear cover 42 which
can cover an opening on the end face of the running rail 2. In a
manner similar to the exemplary embodiment of FIG. 13, the cover 42
is connected via a bend 43 to a wall element 44 which has a
resilient stop element 45 on the upper side. The stop element 45 is
bent in the shape of a loop and has a front edge 46, against which
an edge 16 of a push element 14 can bear. In this embodiment, too,
particularly elastic spring conditions are achieved due to the
elastic mounting of the resilient stop element 45 relative to the
fixed retaining web 41.
[0045] A pull-out guide according to the invention may have one or
two resilient stops, wherein, in the case of a piece of furniture
or a domestic appliance, pull-out guides are preferably provided on
opposite sides and a push element 14 is supported thereon.
Optionally both pull-out guides or only one of the two pull-out
guides may have one or more resilient stops in order to avoid loud
impact noise when the running rail of the pull-out guide 1 is moved
into an end position.
LIST OF REFERENCE SIGNS
[0046] 1 pull-out guide
[0047] 2 running rail
[0048] 3 fastening part
[0049] 4 fastening part
[0050] 5, 5' stop
[0051] 6 cover
[0052] 7 retaining web
[0053] 8 stop element
[0054] 9 latching mechanism
[0055] 10 retaining section
[0056] 11 protrusion
[0057] 12 cutout
[0058] 13 stop element
[0059] 14 push element
[0060] 15 trough
[0061] 16 edge
[0062] 17 hook
[0063] 18 protrusion
[0064] 20 stop
[0065] 21 cover
[0066] 22 stop element
[0067] 23 contact area
[0068] 24 retaining web
[0069] 25 stop
[0070] 26 retaining web
[0071] 27 cover
[0072] 28 stop element
[0073] 30 stop
[0074] 31 retaining web
[0075] 32 cover
[0076] 33 bend
[0077] 34 panel
[0078] 35 stop element
[0079] 40 stop
[0080] 41 retaining web
[0081] 42 cover
[0082] 43 bend
[0083] 44 wall element
[0084] 45 stop element
[0085] 46 front edge
[0086] L distance
[0087] I dimension
* * * * *