U.S. patent application number 15/400166 was filed with the patent office on 2017-04-27 for pivot bearing unit comprising a braking device.
This patent application is currently assigned to Ondal Holding GmbH. The applicant listed for this patent is Ondal Holding GmbH. Invention is credited to Stefan Knappe, Erhard Lux.
Application Number | 20170114828 15/400166 |
Document ID | / |
Family ID | 28798912 |
Filed Date | 2017-04-27 |
United States Patent
Application |
20170114828 |
Kind Code |
A1 |
Knappe; Stefan ; et
al. |
April 27, 2017 |
PIVOT BEARING UNIT COMPRISING A BRAKING DEVICE
Abstract
A pivot bearing unit (18), having a pneumatic braking device
(21) with a first and second bearing part (22, 23), which are
embodied as rotatable relative to one another, wherein the braking
device (21) is activatable by means of compressed air (36) via a
compressed air supply line (10). The braking device (21) is
provided with a brake hose (1), embedded in a bearing plate (14),
in the first bearing part (22), and the brake hose (1) expands as a
result of subjection to compressed air (36) with a motion (8) in
the direction of a free end (16) and, via an axially movable
switching ring (2), exerts a force (17) on at least one brake block
(6) of the second bearing part (23), for transmitting a braking
moment (15) between the first and second bearing parts (22,
23).
Inventors: |
Knappe; Stefan; (Burghaun,
DE) ; Lux; Erhard; (Burghaun, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Ondal Holding GmbH |
Huenfeld |
|
DE |
|
|
Assignee: |
Ondal Holding GmbH
Huenfeld
DE
|
Family ID: |
28798912 |
Appl. No.: |
15/400166 |
Filed: |
January 6, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10512705 |
Apr 18, 2005 |
9551458 |
|
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PCT/EP03/04452 |
Apr 29, 2003 |
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15400166 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F16D 2125/14 20130101;
F16M 11/08 20130101; F16M 13/027 20130101; F16C 41/001 20130101;
F16M 11/06 20130101; F16D 55/12 20130101; F16C 11/103 20130101;
F16M 11/2014 20130101; F16M 2200/068 20130101; A61G 12/004
20130101 |
International
Class: |
F16C 11/10 20060101
F16C011/10; F16M 11/20 20060101 F16M011/20; A61G 12/00 20060101
A61G012/00; F16M 11/08 20060101 F16M011/08; F16D 55/12 20060101
F16D055/12; F16M 13/02 20060101 F16M013/02 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 29, 2002 |
DE |
102 19 182.4 |
Claims
1. A pivot bearing unit (18), having a pneumatic braking device
(21) with a first and second bearing part (22, 23), which are
embodied as rotatable relative to one another, wherein the braking
device (21) is activatable by means of compressed air (36) via a
compressed air supply line (10), characterized in that the braking
device (21) is provided with a brake hose (1), embedded in a
bearing plate (14), in the first bearing part (22), and the brake
hose (1) expands as a result of subjection to compressed air (36)
with a motion (8) in the direction of a free end (16) and, via an
axially movable switching ring (2), exerts a force (17) on at least
one brake block (6) of the second bearing part (23), for
transmitting a braking moment (15) between the first and second
bearing parts (22, 23).
2. The pivot bearing unit of claim 1, characterized in that the
brake hose (1) has a rectangular shape.
3. The pivot bearing unit of claim 1, characterized in that the
brake block (6) is provided with a brake lining (4).
4. The pivot bearing unit of claim 1, characterized in that the
first bearing part (22) has a central opening (37), and that the
second bearing part (23) is designed is as a bearing pot (13).
5. The pivot bearing unit of claim 1, characterized in that the
pivot bearing unit (18) is provided for a tripod (19), in
particular for a ceiling-mounted tripod (19), and a securing device
(12) with a flange plate (20) is provided.
Description
[0001] The invention relates to a pivot bearing unit as generically
defined by the preamble to claim 1.
[0002] Axial pivot bearing units with a braking device for a tripod
serve the purpose for instance of horizontal pivoting motion of
ceiling supply units in medical units in medical technology that
are known for instance from German Patent DE 43 06 805 C1. The
medical ceiling supply unit is used for moving medical equipment
both horizontally and vertically in a room.
[0003] The object of the invention is to create a pivot bearing
unit of this generic type which has a simple construction and a
reliable mode of operation. Moreover, parts subject to wear (brake
blocks and brake hose) are to be easy to replace without
dismantling supply lines.
[0004] This object is attained by the characteristics of the body
of claim 1.
[0005] The invention will be described in further detail in terms
of an exemplary embodiment.
[0006] Shown are:
[0007] FIG. 1, in an axial sectional view, a pivot bearing unit in
a section taken along the line I-I of FIG. 2;
[0008] FIG. 2, in a sectional view, the pivot bearing unit in a
section taken along the line II-II of FIG. 1;
[0009] FIG. 3, a detail marked III in FIG. 1, showing more detail
of a braking device in an inactive state;
[0010] FIG. 4, in a side view, the pivot bearing unit of FIG.
1;
[0011] FIG. 5, the detail III of FIG. 3, but with the braking
device in the activated state; and
[0012] FIG. 6, in a side view, one example of an application, with
a ceiling-mounted tripod.
[0013] FIG. 1 shows a pivot bearing unit 18 with a first and second
bearing part 22, 23, which are embodied as a rotatable relative to
one another. For braking or fixing a rotary angle, once set, of the
two bearing parts 22, 23 relative to one another, the pivot bearing
unit 18 is provided with a pneumatic braking device 21, which can
be activated by means of compressed air 36 via a compressed air
supply line 10. In the first bearing part 22, the braking device 21
is provided with a brake hose 1, embedded in a bearing plate 14,
and upon subjection to compressed air 36 the brake hose 1 expands,
with a motion 8 in the direction of a free end 16 (FIG. 5) and, via
an axially movable switching ring 2, exerts a force 17 on at least
one brake block 6 of the second bearing part 23, for transmitting a
braking moment 15 between the first and second bearing parts 22,
23. The brake block 6 is screwed firmly to the bearing pot 13. The
switching ring 2, once compressed air 36 has been directed into the
brake hose 1, presses on the brake lining 4, which is glued to the
brake block 6 that is made of aluminum. The brake lining 4
comprises a plastic, for instance of the kind that can be procured
from the company known as Jurid.
[0014] As the brake hose 1, a rubber hose cut to the proper length
is contemplated; a first end is sealed off by means of a stopper,
and a second end is provided with a glued-in connection valve (not
shown) for the compressed air supply line 10. This brake hose 1 is
placed like a ring in the bearing plate 14. The compressed air
supply line 10 is passed through the bearing plate 14 for mounting
on the ceiling. Because the brake hose 1 has a rectangular outer
shape, on the one hand a good seat in the bearing plate 14, which
is complementary to it, and on the other a more two-dimensional
transmission of force to the switching ring 2 are provided for.
[0015] The bearing pot 13 is used for mounting or securing a tripod
arm 31, 32, which is to be pivoted, or a tripod column 33. For
ducting lines (compressed air supply lines 10, electrical lines
35), the first bearing part 22 has a central opening 37, and the
second bearing part 23 is designed as a bearing pot 13. The
mounting is done by means of conventional screw fasteners. The flow
of force is from the annular securing device 12 via the oblique
needle bearing 3 to the bearing pot 13. To assure that the tripod
arms 31, 32 cannot move horizontally without being controlled, one
braking device 21 each is built in. Later mounting or removal of
components of the braking device 21 is possible at any time without
removal of a piece of medical equipment 34 (FIG. 6). Thus the
otherwise usual removal of gas lines 9 or compressed air supply
lines 10 and electrical supply lines 35 becomes unnecessary.
[0016] By means of a plastic compressed air supply line 10,
compressed air 36 is introduced into the brake hose 1. This is done
after actuation of a pneumatic valve (not shown), for instance with
a manual actuation in which the brake hose 1 is pumped up and
expands in the process. In this process, the brake hose 1 moves the
switching ring 2 downward by means of a linear motion 8. Because of
a positive-engagement connection with the bearing plate 14, a
radial motion 11 of the switching ring 2 during the linear motion 8
is impossible.
[0017] The linear motion 8 of the switching ring 2 is limited by
the brake blocks 6. The switching ring 2 is seated on the brake
linings 4 and generates a braking moment 15. The setting and
adjustment of the braking moment 15 are effected by means of
threaded pins 7, by which the brake block 6 is raised by a linear
motion 8 and fixed with a screw connection 5. By providing a number
of brake blocks 6 greater than three, influence can also be exerted
on the braking moment 15.
[0018] The brake hose 1, 10 is vented by blowing out the compressed
air 36, by actuation of a pneumatic valve (not shown). This state
is shown in FIGS. 1 and 3. The switching ring 2 moves linearly
upward. The pressure on the brake blocks 6 is rescinded, and the
braking device 21 is thus ventilated and deactivated.
[0019] Permanent braking by means of friction is possible without
structural conversion. This becomes important if the compressed air
supply is not structurally provided for. For that purpose, the
brake blocks 6 are raised by means of threaded pins 7 and fixed by
a screw connection 5. Now the switching ring 2 has permanent
contact with the brake lining 4 of the brake block 6, as a result
of which a frictional braking moment 15 is generated. By means of
this construction, wear of the brake hose 1 from friction is
avoided.
[0020] Wearing parts such as the brake hose 1 and brake blocks 6
can advantageously be replaced without removing the supply lines
(electrical and gas supply).
[0021] FIG. 2, in a sectional view, shows the pivot bearing unit 18
taken along the line II-II of FIG. 1.
[0022] FIG. 3 shows a detail III of FIG. 1, showing the braking
device 21 in further detail in an inactive state. The brake hose 1
is embedded on three sides and can thus expand solely in the
direction of the free end 16 (FIG. 5). As a consequence, a first
spacing D increases to a second spacing D1, and a force 17 is thus
exerted on the switching ring 2. The brake hose 1 in this process
acts like a pneumatic short-stroke cylinder.
[0023] FIG. 4 is a side view of the pivot bearing unit 18 of FIG.
1.
[0024] FIG. 5 shows the detail III of FIG. 3, but with the braking
device 21 in the activated state as a result of the brake hose 1
that has expanded by means of the compressed air 36.
[0025] In FIG. 6, the pivot bearing unit 18 is provided for a
tripod 19, in particular a ceiling-mounted tripod 19; a flange
plate 20 is provided as the securing device 12 for a ceiling
fastening. The ceiling-mounted tripod 19 has a first and second
tripod arm 31, 32, each with a further pivot bearing unit 18.1 and
18.2, respectively, which are partly accommodated inside the tripod
arms 31, 32. Through a compressed air supply line 10 shown in
dashed lines, compressed air 36 (5 bar) is introduced by
distribution into the respective brake hose 1, or separate
compressed air supply lines 10 are provided for each of the three
brake hoses 1 of the pivot bearing units 18, 18.1, 18.2.
LIST OF REFERENCE NUMERALS
[0026] 1 Brake hose [0027] 2 Switching ring [0028] 3 Oblique needle
bearing [0029] 4 Brake lining [0030] 5 Screw connection [0031] 6
Brake block [0032] 7 Threaded pin [0033] 8 Linear motion [0034] 9
Plastic hose [0035] 10 Compressed air supply line [0036] 11 Radial
motion [0037] 12 Securing device [0038] 13 Bearing pot [0039] 14
Bearing plate [0040] 15 Braking moment [0041] 16 Free end [0042] 17
Force [0043] 18 Pivot bearing unit [0044] 19 Ceiling-mounted tripod
[0045] 20 Flange plate [0046] 21 Braking device [0047] 22 First
bearing part [0048] 23 Second bearing part [0049] 31 First tripod
arm [0050] 32 Second tripod arm [0051] 33 Tripod column [0052] 34
Equipment [0053] 35 Electrical line [0054] 36 Compressed air [0055]
37 Central opening [0056] D First spacing [0057] D1 Second
spacing
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