GB1439330A – Vehicle brakes
– Google Patents
GB1439330A – Vehicle brakes
– Google Patents
Vehicle brakes
Info
Publication number
GB1439330A
GB1439330A
GB4053372A
GB4053372A
GB1439330A
GB 1439330 A
GB1439330 A
GB 1439330A
GB 4053372 A
GB4053372 A
GB 4053372A
GB 4053372 A
GB4053372 A
GB 4053372A
GB 1439330 A
GB1439330 A
GB 1439330A
Authority
GB
United Kingdom
Prior art keywords
strut
piston
brake
ring
bore
Prior art date
1972-09-01
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
Application number
GB4053372A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Girling Ltd
Original Assignee
Girling Ltd
Priority date (The priority date 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 date listed.)
1972-09-01
Filing date
1972-09-01
Publication date
1976-06-16
1972-09-01
Application filed by Girling Ltd
filed
Critical
Girling Ltd
1972-09-01
Priority to GB4053372A
priority
Critical
patent/GB1439330A/en
1973-08-20
Priority to US389524A
priority
patent/US3860095A/en
1973-08-22
Priority to AU59529/73A
priority
patent/AU5952973A/en
1973-08-31
Priority to DE2344025A
priority
patent/DE2344025C2/en
1973-08-31
Priority to BR6731/73A
priority
patent/BR7306731D0/en
1973-09-01
Priority to JP48098758A
priority
patent/JPS5918582B2/en
1976-06-16
Publication of GB1439330A
publication
Critical
patent/GB1439330A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
F16D65/00—Parts or details
F16D65/38—Slack adjusters
F16D65/40—Slack adjusters mechanical
F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
Abstract
1439330 Hydraulic actuators for spot-type disc brakes GIRLING Ltd 31 Aug 1973 [1 Sept 1972] 40533/72 Heading F2E An hydraulic actuator 14 for a spot-type disc brake, the actuator comprising a first component 13 and a second component 15, is provided with an anti-knock-back device 19; the construction of device 19, and its relationship with the actuator components, are set out below, As shown, a brake pad assembly 11 of a spottype disc brake is directly operated by a piston 15, while the indirectly-operated pad 12 is secured to a caliper 13 slidably mounted on a fixed bracket 10. For operation, hydraulic fluid is applied to space 18 on the right-hand side of piston 15. On brake release, piston 15 retracts into blind bore 16 only as far as is necessary to relieve the pressure at the friction faces of the pads 11, 12: the piston is normally prevented from further retraction by the friction developed at the seal 17. However, as a result of disc deflection due to cornering, for example, the piston could be knocked back further because fluid can be displaced from space 18 through the master cylinder (not shown) to the reservoir when the brake is not applied. The anti-knock-back device 19 prevents this, and comprises a strut 20, a collar 21 and a split ring 22 retained by its own resilience in frictional engagement with the strut. The strut 20 is slidably sealed at 29 to piston 15, and is urged by a compression spring 25, acting between a split ring 26 lodged in caliper 13 and a washer 24 captive on the strut, towards the base 28 of blind bore 16. The split ring 22 has an external conical surface co-operating with an internal conical surface of collar 21; the split ring also co-operates with a shoulder 31 formed in piston 15; the axial movement thus permitted to the split ring 22 determines the brake slack, and can be pre-adjusted by screwing collar 21 in or out. In operation, when the brake is first applied, piston 15 is moved to the left relative to the caliper, but strut 20 is constrained by spring 25 to move first of all with the caliper. At a predetermined relatively-low pressure, the spring force is overcome by the fluid pressure, which thereupon urges strut 20 to the left until the conical surface on ring 22 engages that on collar 21, the resulting wedging action preventing sliding of the strut within the ring 22. Thereafter, the piston and strut move together. The converse happens on brake release. If wear takes place while the brake is applied, the piston 15 will not retract so far into bore 16 on release before the brake pressure has fallen to the above-mentioned predetermined value, so strut 20 is moved to the right by spring 25. Due to brake wear, ring 22 engages shoulder 31 before the end of the strut engages base 28 of bore 16, but spring 25 is strong enough to force strut 20 the remaining distance, drawing it through ring 22 a distance corresponding to the lining wear. As brake pressure is finally dissipated, piston 15 further retracts into bore 16 until the conical surface on collar 21 engages that on ring 22. Ring 22 is thereby urged more positively into engagement with strut 20, and knockback is prevented. For re-setting, a cup-shaped member 33 is fitted over the free end of strut 20 and may be used to push ring 22 to the right along strut 20: piston 15 cannot simply be pushed back into the bore because of the above-described wedging action. In Fig. 2 (not shown), base 28 is provided at the end of a separate fluid bore-that of a second piston which acts on the caliper, the caliper in this case being in the form of a plate like yoke.
GB4053372A
1972-09-01
1972-09-01
Vehicle brakes
Expired
GB1439330A
(en)
Priority Applications (6)
Application Number
Priority Date
Filing Date
Title
GB4053372A
GB1439330A
(en)
1972-09-01
1972-09-01
Vehicle brakes
US389524A
US3860095A
(en)
1972-09-01
1973-08-20
Vehicle brakes
AU59529/73A
AU5952973A
(en)
1972-09-01
1973-08-22
Vehicle brakes
DE2344025A
DE2344025C2
(en)
1972-09-01
1973-08-31
Hydraulic actuation device for a partially lined disc brake
BR6731/73A
BR7306731D0
(en)
1972-09-01
1973-08-31
IMPROVEMENT IN A HYDRAULIC SERVOMOTOR FOR A REACTION TYPE DISC BRAKE
JP48098758A
JPS5918582B2
(en)
1972-09-01
1973-09-01
Fluid pressure actuator for disc brakes
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB4053372A
GB1439330A
(en)
1972-09-01
1972-09-01
Vehicle brakes
Publications (1)
Publication Number
Publication Date
GB1439330A
true
GB1439330A
(en)
1976-06-16
Family
ID=10415384
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4053372A
Expired
GB1439330A
(en)
1972-09-01
1972-09-01
Vehicle brakes
Country Status (6)
Country
Link
US
(1)
US3860095A
(en)
JP
(1)
JPS5918582B2
(en)
AU
(1)
AU5952973A
(en)
BR
(1)
BR7306731D0
(en)
DE
(1)
DE2344025C2
(en)
GB
(1)
GB1439330A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN108529345A
(en)
*
2018-03-28
2018-09-14
青岛宏大纺织机械有限责任公司
A kind of winding brake apparatus and braking method
Families Citing this family (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE3136958A1
(en)
*
1981-09-17
1983-03-31
Alfred Teves Gmbh, 6000 Frankfurt
Automatic adjustment device for a hydraulically and mechanically actuable friction brake
US4887696A
(en)
*
1988-11-30
1989-12-19
The B. F. Goodrich Company
Disc brake
SE513019C2
(en)
1998-07-28
2000-06-19
Volvo Lastvagnar Ab
Wheel hub and brake disc device for heavy vehicles
JP2001065614A
(en)
*
1999-08-30
2001-03-16
Honda Motor Co Ltd
Piston seal member for disc brake and manufacture thereof
US6626269B2
(en)
2000-08-08
2003-09-30
Delphi Technologies, Inc.
Zero drag disc brake with anti-knock-back device
US6481543B1
(en)
*
2000-08-08
2002-11-19
Delphi Technologies, Inc.
Zero drag disc brake with anti-knock-back device
CN104533991B
(en)
*
2014-12-31
2017-08-25
芜湖伯特利汽车安全系统股份有限公司
It is a kind of to reduce the clamp structure of vehicle braking distance
KR101847505B1
(en)
*
2016-08-08
2018-06-01
(주) 조이테크
Caliper Structure of Disk Brake for a Car
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1210269B
(en)
*
1956-03-09
1966-02-03
Dunlop Rubber Co
Automatic and steplessly acting adjusting device, especially for a hydraulic fluid operated partial-lined disc brake
US3338354A
(en)
*
1966-05-16
1967-08-29
Harold W Nash
Brake mechanism having compensating features
US3574324A
(en)
*
1969-03-07
1971-04-13
Gen Motors Corp
Disc brake adjusting and antiknockback mechanism
1972
1972-09-01
GB
GB4053372A
patent/GB1439330A/en
not_active
Expired
1973
1973-08-20
US
US389524A
patent/US3860095A/en
not_active
Expired – Lifetime
1973-08-22
AU
AU59529/73A
patent/AU5952973A/en
not_active
Expired
1973-08-31
BR
BR6731/73A
patent/BR7306731D0/en
unknown
1973-08-31
DE
DE2344025A
patent/DE2344025C2/en
not_active
Expired
1973-09-01
JP
JP48098758A
patent/JPS5918582B2/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN108529345A
(en)
*
2018-03-28
2018-09-14
青岛宏大纺织机械有限责任公司
A kind of winding brake apparatus and braking method
Also Published As
Publication number
Publication date
AU5952973A
(en)
1975-02-27
DE2344025A1
(en)
1974-03-07
DE2344025C2
(en)
1983-12-15
JPS4985467A
(en)
1974-08-16
JPS5918582B2
(en)
1984-04-27
US3860095A
(en)
1975-01-14
BR7306731D0
(en)
1974-07-11
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Legal Events
Date
Code
Title
Description
1976-10-27
PS
Patent sealed [section 19, patents act 1949]
1993-09-29
PE20
Patent expired after termination of 20 years
Effective date:
19930830
