GB1582567A - Retaining device for the electric cable or cord of a brake pad wear warning apparatus of a disc brake - Google Patents
Retaining device for the electric cable or cord of a brake pad wear warning apparatus of a disc brake Download PDFInfo
- Publication number
- GB1582567A GB1582567A GB2714577A GB2714577A GB1582567A GB 1582567 A GB1582567 A GB 1582567A GB 2714577 A GB2714577 A GB 2714577A GB 2714577 A GB2714577 A GB 2714577A GB 1582567 A GB1582567 A GB 1582567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cord
- yoke
- holding member
- retaining
- leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000000717 retained effect Effects 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 3
- 229910000639 Spring steel Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 235000013490 limbo Nutrition 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000012858 resilient material Substances 0.000 claims 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
- F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
- F16B2/24—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal
- F16B2/241—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material of metal of sheet metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
- F16L3/123—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface
- F16L3/1233—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing and extending along the attachment surface the member being of metal, with or without an other layer of other material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
(54) RETAINING DEVICE FOR THE ELECTRIC CABLE OR CORD
OF A BRAKE PAD WEAR WARNING APPARATUS OF A DISC BRAKE
(713 We, TOKICO LTD. a Japanese body-corporate of 6-3,Fujimi 1-chome Kawasakiku, Kawasaki-shi, Kanagawa-ken, Japan, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a retaining device for the electric cord of a brake pad electrical wear warning apparatus of a disc brake assembly, for detecting and giving warning of brake pad lining wear.
The conventional vehicle disc brake provides a wear warning apparatus to detect and give warning of brake pad lining wear. A typical electrical wear warning apparatus provides a sensor electrically to detect brake pad lining wear and an electric cable or cord to transmit a warning signal from the sensor to a sound or light warning device in the driver's cab when the wear exceeds a predetermined value.
The cord should be retained firmly to prevent from wear or breakage by contact with moving parts such as a brake disc.
The present invention aims to provide a simple cord retaining device firmly to retain the cord.
The electric-cord retaining device according to the present invention comprises a cord holding member of a general U-shape in which the cord is clamped, the member providing oppositely disposed leg portions having oppositely disposed cut out portions formed on end portions of the limbs, and a retaining member for securing the holding member to the yoke of the disc brake assembly at one end of a hole formed in the yoke with one leg laid against the surface of the yoke at that end of the hole and the other leg lying generally parallel to the one leg and spaced from the surface of the yoke; the retaining member comprising a dip to pass through the hole and the cut out portions of the legs to engage by respective portions of the clip the outer facing surface of said other leg and the surface of the yoke at the other end of the hole so as to maintain the two limbs of the holding member in position in relation to one another.
Figure 1 is a plan view of a disc brake provided with a cord retaining device for a brake pad wear apparatus, according to the present invention;
Figure 2 is an enlarged plan view of the cord retaining device of Figure 1;
Figure 3 is a cross-sectional view taken along line III-III in Figure 2;
Figure 4 is a perspective view of the holding member shown in Figure 2; and
Figure 5 is a perspective view of the retaining member shown in Figure 2.
Figure 1 shows a disc brake provided with a cord retaining device A according to the present invention for the electric cord of an electric wear warning apparatus. In the drawing, brake pads 1 each consisting of a backing plate and a lining are disposed at opposite sides of a rotatable disc (not shown) and are supported by two parallel pins 2 and 2. One end of each pin 2 is supported on a cylinder body 3 and the other end thereof is supported on a bracket 5 of a yoke 4 which is, in turn, supported floatingly on the cylinder body 3.
In preventing vibrations of brake pads 1, pad springs 6 and 6 are disposed to urge the brake pads 1 and 1 in one direction, that is, perpendicularly downward relative to the plane of the paper of Figure 1, with a portion thereof engaging with backing plate of the brake pad 1 and a portion thereof with the pin 2. A sensor 7 of the electric wear warning apparatus is disposed to detect wear of the lining and is connected to an electric cord 8 for transmitting an electric warning signal to the driver's cab. In the embodiment, the sensor 7 is mounted on the bracket 5 which is secured on the yoke 4. When lining of the brake pad 1 which is the lower shown in the drawing wears by a predetermined amount, the sensor 7 contacts electrically with the brake disc to complete an electric warning circuit, whereby lining wear can be detected.
The pad springs 6,6 engaging with friction pads 1,1 have respectively hook portions 6a which are extended from respective ends of the side of the sensor 7 in the direction away from the pads 1,1 and are formed to have the
shape of hooks adapted to engage and support
an electric cord 8 connected to the sensor 7
at positions adjacent to the sensor 7. The electric cord 8 supported by hook portions 6a
extends Further and is supported by the cord
retaining device A according to the embodiment, at a holder portion 9 formed by a member such as a rubber grommet or the like.
Details of the cord retaining device A will now be described in conjunction with Figures 2 to 5. The cord retaining device A includes a cord holding member 10 and a retaining member
11. The holding member 10 is a generally Ushaped metal plate formed of such as spring steel or stainless steel, and the bent portion thereof is adapted to enclose the outer periphery of the holder portion 9 such as a rubber grommet. Two leg portions 10a and 10b of the U-shaped holding member 10 are provided respectively with cut-outs 10'a and 10'b.
Further, pawl portions 10c,10e, are formed on the opposite sides of the leg portion 10a as shown in Figure 4. A recess 10d extending in the direction of the cord 8 is formed in the outer surface of the leg portion 10b to engage snugly with the retaining member 11. The retaining member 11 comprises a clip in the form of a round bar of such as hard steel or the like, and the opposite end portions of which are respectively cranked in different directions. In the embodiment, the cranked upper end portion 1 ib forming a stopper portion and the central portion ]la lie in a plane which intersects at a right angle with a plane containing the central portion 1 lea and the cranked lower end portion 1 1c. The lower end portion 1 1c acts as a yoke engaging portion.
Mounting of the cord retaining device A will now be explained. In mounting the cord retaining device A one of openings 13 formed in the yoke 4 can be utilized conveniently. The openings 13 act to locate springs 12, of con ventional type, biassing the yoke 4 relative to the cylinder in the direction perpendicular to the axis thereof to prevent rattling of the yoke 4. The holding member 10 is located on the yoke 4 with the cut-out portion 10'a overlapping with one of the openings 13, and the U-shapeci bent portion thereof surrounding the holder portion 9. The retaining member 11 is inserted from the lowerside in Figure 3 into the openings 13 with the stopper portion 11 b being positioned parallel with the cut-out portions 10'a and 10'b. The leg portion 10b is pressed downward so that the stopper portion 1 lib clears the cut-out portion 10'b and projects upwards from the leg portion 10b. Then, the retaining member 11 is rotated 90" about the axis of the central portion 1 a with the stopper portion 1 lb being rotated to a position parallel to the recess lOd of the leg portion 10b. Thus, the holding member 10 can be retained in its position by the retaining member 11 by the elasticity of the holding member. The pawls 10c are formed to engage with opposite ends
(upper and lower ends as viewed in Figure 2)
of a retaining portion 12a of the spring 12,
whereby, rotation of the holding member 10
in the plane of Figure 2 can be prevented, and
the cord 8 retained firmly in place. The length
1 of the yoke engaging portion 1 Ic can be
formed sufficiently larger that the diameter
of the opening 13 thus preventing the re
taining member 11 from disengaging from
the opening 13.
To release the cord retaining device A,
the stopper portion 1 1b ofthe retaining member
11 is rotated 900 overcoming the resilient
force of the holding member 10 to align the
portion 116 with cut-out portion 10'b of the
leg 10b. Then the retaining member 11 can
easily be removed from the opening 13. In
the embodiment, the retaining member 11 is
installed in one of the openings 13 formed for
mounting the springs 12, but an opening
solely for mounting the retaining member 11
may be specially formed in the yoke.
It will be appreciated that the cord retaining
device according to the present invention
includes a retaining member utilizing an opening
formed in the yoke and co-operating with a
cord holding member to retain and support
the cord firmly on the yoke. As the device has
a small number of parts, the device can be
manufactured economically, and can be installed
or removed very easily and efficiently. Further,
the electric cord is firmly retained at a portion
remote from the sensor, thus the cord will
not contact the brake disc.
WHAT WE CLAIM IS:
1. A retaining device for the electric cord
ofa brake pad wear electrical warning apparatus
for a disc brake assembly; the device com
prising a holding member of a general U shape
in which the cord is clamped, the member
providing oppositely disposed leg portions
having oppositely disposed cut out portions
formed on end portions of the limbos, and a
retaining member for securing the holding
member to the yoke of the disc brake assembly
at one end of a hole formed in the yoke with
one leg laid against the surface of the yoke at
that end of the hole and the other leg lying
generally parallel to the one leg and spaced from said surface to the yoke; the retaining
member comprising a clip to pass through the
hole and the cut out portions of the legs to
engage by respective portions of the clip
the outer facing surface of the other leg of
the holding member and the surface of the yoke
at the other end of the hole so as to maintain
the two limbs of the holding member in position in relation to one another.
2. A retaining device according to Claim 1, in which the clip is formed of a bar with the respective end portions which are cranked perpendicular relative to the central portion, and which are of a length, such that the clip can be assembled with the holding member by passing one end portion through the hole in
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. A retaining device for the electric cord
ofa brake pad wear electrical warning apparatus
for a disc brake assembly; the device com
prising a holding member of a general U shape
in which the cord is clamped, the member
providing oppositely disposed leg portions
having oppositely disposed cut out portions
formed on end portions of the limbos, and a
retaining member for securing the holding
member to the yoke of the disc brake assembly
at one end of a hole formed in the yoke with
one leg laid against the surface of the yoke at
that end of the hole and the other leg lying
generally parallel to the one leg and spaced from said surface to the yoke; the retaining
member comprising a clip to pass through the
hole and the cut out portions of the legs to
engage by respective portions of the clip
the outer facing surface of the other leg of
the holding member and the surface of the yoke
at the other end of the hole so as to maintain
the two limbs of the holding member in position in relation to one another.
2. A retaining device according to Claim 1, in which the clip is formed of a bar with the respective end portions which are cranked perpendicular relative to the central portion, and which are of a length, such that the clip can be assembled with the holding member by passing one end portion through the hole in
the yoke and the cut-out portions in the holding member at a predetermined angular position relative to the cut-out portions to engage the end portion with the other leg portion of the holding member on rotation of the end portion relative to the central portion thereof and to the cut-out portions, so as to leave the other end portion in engagement with the surface of the yoke at said other end of the hole.
3. A retaining device according to Claim 1 or 2, in which a recess extending from the cut-out portion is formed in the other leg portion of the holding member for engaging with the retaining member.
4. A retaining device according to Claim 1, or 3 in which the holding member is formed of a resilient material.
5. A retaining device according to Claim 4, in which the holding member is formed of spring strip metal.
6. A retaining device for the electric cord of a brake pad wear warning apparatus, substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8596776U JPS534082U (en) | 1976-06-30 | 1976-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1582567A true GB1582567A (en) | 1981-01-14 |
Family
ID=13873493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2714577A Expired GB1582567A (en) | 1976-06-30 | 1977-06-29 | Retaining device for the electric cable or cord of a brake pad wear warning apparatus of a disc brake |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS534082U (en) |
| BR (1) | BR7704261A (en) |
| GB (1) | GB1582567A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2540204A1 (en) * | 1983-02-02 | 1984-08-03 | Dba | DISC BRAKE WITH SLIDING CALIPER AND FRICTION ELEMENT HAVING WEAR INDICATOR |
| DE8909084U1 (en) * | 1989-07-26 | 1990-11-29 | Textar Gmbh, 5090 Leverkusen, De | |
| DE3917125A1 (en) * | 1989-05-26 | 1990-11-29 | Teves Gmbh Alfred | PARTIAL PAD DISC BRAKE |
| DE4016273A1 (en) * | 1990-05-21 | 1991-12-05 | Teves Gmbh Alfred | Disc brake cover with wear sensor cable holder - provided by open or closed cable eye at side of brake cover |
| DE4027944A1 (en) * | 1990-09-04 | 1992-03-05 | Teves Gmbh Alfred | Caliper brake casing for partially lined discs brakes - includes wear indicator with support bracket to hold indicator connector and brake hose |
| US5244061A (en) * | 1990-10-03 | 1993-09-14 | Hoyt Gordon C | Air brake stroke length gage |
| US5320198A (en) * | 1993-07-22 | 1994-06-14 | Hoyt Gordon C | Air brake stroke length adjustment gauge |
| US5513726A (en) * | 1992-12-15 | 1996-05-07 | Lucas Industries Public Limited Company | Brake lining wear indicator assembly |
| EP1158199A2 (en) | 2000-05-24 | 2001-11-28 | Lucas Automotive Gmbh | Lining wear indication device for disc brakes |
| EP2664815A1 (en) * | 2012-05-16 | 2013-11-20 | Wabco Radbremsen GmbH | Disc brake, in particular for commercial vehicles, and holding unit for a cable of such a disc brake |
| US20190249735A1 (en) * | 2018-02-15 | 2019-08-15 | Bendix Spicer Foundation Brake Llc | Mechanical Pad Wear Indicator |
| US11460084B2 (en) | 2019-10-22 | 2022-10-04 | Wabco Europe Bvba | Disc brake, in particular for commercial vehicles, and holding unit for a cable of such disc brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129270A (en) * | 1974-04-01 | 1975-10-13 |
-
1976
- 1976-06-30 JP JP8596776U patent/JPS534082U/ja active Pending
-
1977
- 1977-06-29 BR BR7704261A patent/BR7704261A/en unknown
- 1977-06-29 GB GB2714577A patent/GB1582567A/en not_active Expired
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0116000A1 (en) * | 1983-02-02 | 1984-08-15 | BENDIX France | Disc brake with sliding caliper and friction component provided with electrical wear indicator |
| US4527664A (en) * | 1983-02-02 | 1985-07-09 | Societe Anonyme D.B.A. | Disc brake with sliding caliper and friction component provided with electrical wear indicator |
| FR2540204A1 (en) * | 1983-02-02 | 1984-08-03 | Dba | DISC BRAKE WITH SLIDING CALIPER AND FRICTION ELEMENT HAVING WEAR INDICATOR |
| DE3917125C2 (en) * | 1989-05-26 | 1999-07-08 | Teves Gmbh Alfred | Part-pad disc brake |
| DE3917125A1 (en) * | 1989-05-26 | 1990-11-29 | Teves Gmbh Alfred | PARTIAL PAD DISC BRAKE |
| DE3926437A1 (en) * | 1989-05-26 | 1991-02-14 | Teves Gmbh Alfred | Disc brake with device warning of lining wear - has floating saddle carrying brake pads and air valve to which electrical indicator wire is cleated |
| DE3926437C2 (en) * | 1989-05-26 | 2001-06-07 | Continental Teves Ag & Co Ohg | Part-pad disc brake |
| DE8909084U1 (en) * | 1989-07-26 | 1990-11-29 | Textar Gmbh, 5090 Leverkusen, De | |
| DE4016273A1 (en) * | 1990-05-21 | 1991-12-05 | Teves Gmbh Alfred | Disc brake cover with wear sensor cable holder - provided by open or closed cable eye at side of brake cover |
| DE4027944A1 (en) * | 1990-09-04 | 1992-03-05 | Teves Gmbh Alfred | Caliper brake casing for partially lined discs brakes - includes wear indicator with support bracket to hold indicator connector and brake hose |
| DE4027944C2 (en) * | 1990-09-04 | 1999-06-02 | Teves Gmbh Alfred | Brake caliper with holder for warning contact plug and brake hose |
| US5244061A (en) * | 1990-10-03 | 1993-09-14 | Hoyt Gordon C | Air brake stroke length gage |
| US5513726A (en) * | 1992-12-15 | 1996-05-07 | Lucas Industries Public Limited Company | Brake lining wear indicator assembly |
| US5320198A (en) * | 1993-07-22 | 1994-06-14 | Hoyt Gordon C | Air brake stroke length adjustment gauge |
| EP1158199A2 (en) | 2000-05-24 | 2001-11-28 | Lucas Automotive Gmbh | Lining wear indication device for disc brakes |
| DE10025659C1 (en) * | 2000-05-24 | 2001-12-20 | Lucas Automotive Gmbh | Bracket for the warning cable and the plug of an electrical pad wear warning indicator |
| EP2664815A1 (en) * | 2012-05-16 | 2013-11-20 | Wabco Radbremsen GmbH | Disc brake, in particular for commercial vehicles, and holding unit for a cable of such a disc brake |
| CN103423517A (en) * | 2012-05-16 | 2013-12-04 | 威伯科车轮制动有限公司 | Disc brake, in particular for commercial vehicles, and holding unit for a cable of such a disc brake |
| CN103423517B (en) * | 2012-05-16 | 2016-09-07 | 威伯科车轮制动有限公司 | It is used in particular for the disk brake of commerial vehicle and the holding means of cable thereof |
| US20190249735A1 (en) * | 2018-02-15 | 2019-08-15 | Bendix Spicer Foundation Brake Llc | Mechanical Pad Wear Indicator |
| US10436271B2 (en) * | 2018-02-15 | 2019-10-08 | Bendix Spicer Foundation Brake Llc | Mechanical pad wear indicator |
| US11460084B2 (en) | 2019-10-22 | 2022-10-04 | Wabco Europe Bvba | Disc brake, in particular for commercial vehicles, and holding unit for a cable of such disc brake |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS534082U (en) | 1978-01-14 |
| BR7704261A (en) | 1978-03-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |