GB1303541A - - Google Patents
Info
- Publication number
- GB1303541A GB1303541A GB4717270A GB4717270A GB1303541A GB 1303541 A GB1303541 A GB 1303541A GB 4717270 A GB4717270 A GB 4717270A GB 4717270 A GB4717270 A GB 4717270A GB 1303541 A GB1303541 A GB 1303541A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- backing
- contact
- insulating member
- lamp
- 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
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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
-
- 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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
-
- 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
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
-
- 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
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
- F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
1303541 Spot-type disc brakes; indicating friction lining wear AISIN SEIKI KK 5 Oct 1970 [4 Oct 1969 1 Nov 1969] 47172/70 Heading F2E The Specification describes various arrangements to indicate wear of the friction linings 20, 25 of a disc brake assembly to a point where replacement is necessary, wherein operation of an electrical switch actuating means 32 causes opening or closing of a contact 32<SP>1</SP> thereby causing a warning lamp 44 to be lit, the means 32 being operated other than by the brake disc 10 to avoid damage thereto. The brake assembly comprises a piston housing 16 wherein two pistons 17, 18 are slidable to act on backing- plate 19 of lining 20 directly and on backing- plate 24 of lining 25 through a reaction transfer plate 22. The backing-plates 19, 24 are supported on two parallel pins 28, 29 and one end of each pin 28 or 29 is fixed to the piston housing 16 by means of clip 30 or 31 and the other end of each pin 28 or 29 is bent outwardly and is secured to torque counteracting arms 26, 27, respectively. As shown in Figs. 1, 2, 3 the means 32 comprises a tubular insulating member 33 which is movably fitted in a stepped hole 34 of the backing-plate 24 and a switch shaft 36 biased by a spring 39 towards the disc 10 is held in the tubular member 33 by a set-screw 43. A metal plate 40 connected to an electrical terminal 41 is tightly fitted in a groove 42 of the insulating member 33. When the linings 20, 25 have worn down the head 37 of the switch shaft 36 makes contact with the backing-plate 19 and the shaft 36 and member 33 are urged to the right to break electrical connection between plate 40 and backing-plate 24 and thereby turn off the current from terminal 41 through plate 40, backing-plate 24 and pins 28, 29 to light an indicating lamp 44. The lamp 44 is included in a circuit shown in Fig. 7 which is applicable to the embodiments of Figs 1-6 and 8-10. The circuit includes a battery 46 and a transistor 48 which upon electrical contact 32<SP>1</SP> opening is caused to conduct and thereby light the lamp 44. The circuit also includes an ignition switch 48 and when an open terminal 49 and starter motor terminal 51 are connected the lamp 44 is lit; the operator can thereby inspect the condition of the circuit prior to operation. In the embodiment of Fig. 4 (not shown), a tubular insulating member (133) is mounted around the pin 28 and upon excessive wear of the linings a metal plate (140) on the member (133) is forced out of contact with the backing- plate 24 to open means 32. In the embodiment . of Fig. 5 (not shown), an insulating shaft (233) is screwed to the backing-plate 19 and the shaft (233) projects through a hole (234) in the backing-plate 24 to act on a metal plate (240) to open the means 32. In the embodiment of Fig. 6 (not shown) an insulating member (302) is fitted into a groove on the pin 28 and comes into contact with a metallic contacting piece (340) attached to backing-plate 24 to thereby open means 32. The embodiments of Figs. 9-12 show the means 32 fitted into the piston housing 16 to protect it from damage. As shown in Fig. 9 an insulating member 433 extends from a bore in the piston housing 16 and through the backing-plate 19. A contact member 440 has contact with a terminal 441 and the means 32 is opened when the linings wear sufficiently by movement of the contact member 440 from bore 405 into a larger bore 404. In the embodiment of Fig. 10 (not shown) a shoulder (508) of an insulating member (533) is moved by the backing-plate 19 to open the means 32. The embodiments of Figs. 11 and 12 utilize the circuit of Fig. 13 (not shown), wherein closure of a contact (32<SP>1</SP>) causes warning lamp (44<SP>1</SP>) to light. As seen in Fig. 11, a contactor 640 is brought into contact with a metallic cover 607 to close the means 32. In the embodiment of Fig. 12 (not shown) an electrical contacting member (740) is brought into contact with a metallic core (707) to close the means 32.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7944969 | 1969-10-04 | ||
JP8780769 | 1969-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1303541A true GB1303541A (en) | 1973-01-17 |
Family
ID=26420474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4717270A Expired GB1303541A (en) | 1969-10-04 | 1970-10-05 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1303541A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111810558A (en) * | 2019-04-10 | 2020-10-23 | 丰田自动车株式会社 | Disc brake |
-
1970
- 1970-10-05 GB GB4717270A patent/GB1303541A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111810558A (en) * | 2019-04-10 | 2020-10-23 | 丰田自动车株式会社 | Disc brake |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3716113A (en) | Warning device for indicating wear of friction pads in disk brake | |
GB1337358A (en) | Means for indicating brake-lining wear on vehicles | |
US2636090A (en) | Vehicle brake lining wear indicator | |
US3297985A (en) | Brake lining wear indicating means | |
US4280594A (en) | Brake wear indicator | |
GB1303541A (en) | ||
JPS6240569B2 (en) | ||
US4374375A (en) | Probe mount assembly for brake wear warning systems | |
GB1360768A (en) | Wear detecting device for friction linings | |
US3713091A (en) | Wear indicating arrangement for brake linings of disc brakes | |
US1850626A (en) | Low pressure warning device | |
GB1253236A (en) | ||
GB1363408A (en) | Electrical devices for detecting or indicating vehicle brake lining wear | |
GB1256987A (en) | ||
GB1591735A (en) | Disc brakes | |
US2305603A (en) | Safety switch | |
US1431220A (en) | Circuit breaker | |
ES270637U (en) | An alarm device for use in indicating the wear of friction linings on brake pads | |
GB1384492A (en) | Disc brake having a switching device for the electrical circuit of a warning device | |
GB520459A (en) | Improvements in and relating to retractive electric switches | |
US2252267A (en) | Illuminating attachment for lubricating guns | |
GB1210053A (en) | Warning device to indicate the attrition of a disc brake pad | |
GB1443544A (en) | Disc brake assemblies | |
US3639895A (en) | Vehicle brake lining wear warning device | |
GB1381759A (en) | Switch actuator mechanism |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |