GB968897A - Improvements in or relating to disc brakes - Google Patents
Improvements in or relating to disc brakesInfo
- Publication number
- GB968897A GB968897A GB4004961A GB4004961A GB968897A GB 968897 A GB968897 A GB 968897A GB 4004961 A GB4004961 A GB 4004961A GB 4004961 A GB4004961 A GB 4004961A GB 968897 A GB968897 A GB 968897A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- cylinder
- ring
- pawl
- movement
- 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
- 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
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- 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
- 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
- F16D55/2255—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 pivoted
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/36—Helical cams, Ball-rotating ramps
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/40—Screw-and-nut
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
968,897. Disc brakes. AUTOMOTIVE PRODUCTS CO. Ltd. Nov. 8, 1962 [Nov. 8, 1961; Nov. 10, 1961; Dec. 19, 1961], Nos. 40049/61, 40368/61 and 45498/61. Heading F2E. In a disc brake of the kind having a slidably or pivotally mounted member and associated pads on opposite sides of a disc, one of which is applied directly by the piston of a fluid pressure cylinder mounted on the member and the other by the reaction in the cylinder acting through the member, alternative manual applying means comprises a lever movable in a plane normal to the axis of the cylinder and a ball and inclined recess cam device whereby movement of the lever applies the one pad directly via an automatic adjustment device located in or around the cylinder. In one embodiment, Figs. 1 and 3, the member 23 is of closed loop formation and is located on a support 26 for sliding movement transversely of the plane of a disc 20. Pads 21, 22 are respectively carried by backing plates 29, 31 which are shaped to provide shoulders, the shoulders of plate 29 resting on edges of the opening in member 23 while those of plate 31 rest on the support 26 adjacent downturned portions 28 which prevent circumferential movement of pad 22 and guide the latter for axial movement. Split pins 33 inserted through a bracket 34 on member 23 and flanges 35 on a cylinder 24 secured to the member 23 normally prevent radial movement of the pads and are removable to facilitate pad replacement. A spring clip 36 and spring 37 maintain sliding contact between member 23 and support 26 and prevent vibration. Cylinder 24 contains a piston 25 acting directly on backing plate 31, the reaction acting via the member 23 on the backing plate 29 so that on supply of fluid to the cylinder both pads are applied. The alternative manual applying means and automatic clearance adjuster comprises a manually moved lever 47 mounted on a pin 46 integral with a ratchet wheel 43 in turn connected by a splined connection 44a to a thrust member composed of two parts 43, 42 in screw-threaded engagement with one another, the part 42 being secured non-rotatably to the piston. A pawl 52 engaging the ratchet wheel is secured to the lever 47 and a holding pawl 53 is secured to member 23. When lever 47 is moved from its rest position balls 50 ride up sloping faces of recesses 48 and 49 in the lever and member 23 respectively so that lever 47 acts via balls 51 on the ratchet wheel and thrust member assembly to move piston 25 to apply the brake. If the movement of lever 47 is excessive pawl 52 slips over a tooth of the ratchet wheel so that on subsequent brake release movment of lever 47 ratchet wheel 44 is rotated by pawl 52 in a direction to increase the length of the thrust member. In a second embodiment, Fig. 5, the member 23 is pivoted at 55 to a support 56, the member 23 and support 56 supporting and guiding the shoes 21, 22 as in the previous embodiment. The manual applying means is also as in the previous embodiment except that the ratchet wheel is formed integrally with the thrust member, consisting of teeth 62 formed on part 59 of the thrust member and co-operating with a pawl 71 on lever 64 and holding pawl 72. In a third embodiment, Fig. 9, the cylinder 24 is annular and contains an annular piston 25 sealed externally by a gland 88 and in the centre by a seal 87 attached to end 85 of a thrust member formed of parts 78, 81, manual operation and automatic adjustment of which are effected as in the first two embodiments. In a fourth embodiment, Fig. 10, manually operated lever 101 is formed with a ring 102 surrounding the cylinder and rotatable upon movement of the lever to cause balls 104 to rise up the sides of recesses 103, 105 in the ring and a thrust ring 106, respectively, the latter being secured to the backing plate of the pad applied by the piston. The reaction force on the ring 102 is taken by a ring 99 threaded on the cylinder and having ratchet teeth 108 engaged by a pawl 107 carried by ring 102 so that automatic adjustment is effected as in the previous embodiments. A holding pawl, not shown, is also provided. In a fifth embodiment (Fig. 12, not shown) the previous construction is modified in that a ball race is positioned between the ring on the applying lever and the ring having the ratchet teeth, to reduce friction. In a further embodiment, Fig. 13, a manually operated lever 134 is formed with a rotatable ring 133 mounted, together with a non-rotatable ring 128, on part 126 of a thrust member 125, 126 arranged between piston 25 and the backing plate of pad 22. Rings 128, 133 have complementary undulating grooves 131, 132 between which are located balls 135 by which, upon movement of the lever, thrust is applied between the cylinder 24 and pad 22. Pawls 136, 137, respectively on ring 133 and the cylinder co-operate with ratchet teeth formed on the part 126 to effect automatic adjustment of the thrust member which is thereby effective for both manual and power operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4004961A GB968897A (en) | 1961-11-08 | 1961-11-08 | Improvements in or relating to disc brakes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4004961A GB968897A (en) | 1961-11-08 | 1961-11-08 | Improvements in or relating to disc brakes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB968897A true GB968897A (en) | 1964-09-09 |
Family
ID=10412915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4004961A Expired GB968897A (en) | 1961-11-08 | 1961-11-08 | Improvements in or relating to disc brakes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB968897A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3439780A (en) * | 1966-06-25 | 1969-04-22 | Teves Kg Alfred | Disk brake and actuator therefor |
US3530493A (en) * | 1968-10-02 | 1970-09-22 | Kelsey Hayes Co | Floating friction brake for rotary disk |
US3935928A (en) * | 1973-06-27 | 1976-02-03 | Girling Limited | Pivotable closed loop type disc brake |
US4253550A (en) * | 1979-03-26 | 1981-03-03 | The Bendix Corporation | Disc brake and adjuster therefor |
GB2184178A (en) * | 1985-12-13 | 1987-06-17 | Automotive Products Plc | Screw adjuster mechanism |
EP0990814A3 (en) * | 1998-10-02 | 2002-10-16 | Tecumseh Products Company | Self-adjustable brake |
WO2013143962A1 (en) * | 2012-03-26 | 2013-10-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Brake-application device for a rotary-lever-actuated disc brake |
US11105386B2 (en) * | 2020-01-15 | 2021-08-31 | Chih-Hsien Liao | Brake caliper device having automatic pad wear compensation mechanism |
-
1961
- 1961-11-08 GB GB4004961A patent/GB968897A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3439780A (en) * | 1966-06-25 | 1969-04-22 | Teves Kg Alfred | Disk brake and actuator therefor |
US3530493A (en) * | 1968-10-02 | 1970-09-22 | Kelsey Hayes Co | Floating friction brake for rotary disk |
US3935928A (en) * | 1973-06-27 | 1976-02-03 | Girling Limited | Pivotable closed loop type disc brake |
US4253550A (en) * | 1979-03-26 | 1981-03-03 | The Bendix Corporation | Disc brake and adjuster therefor |
GB2184178A (en) * | 1985-12-13 | 1987-06-17 | Automotive Products Plc | Screw adjuster mechanism |
GB2184178B (en) * | 1985-12-13 | 1989-12-13 | Automotive Products Plc | Screw adjuster mechanism |
EP0990814A3 (en) * | 1998-10-02 | 2002-10-16 | Tecumseh Products Company | Self-adjustable brake |
WO2013143962A1 (en) * | 2012-03-26 | 2013-10-03 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Brake-application device for a rotary-lever-actuated disc brake |
US11105386B2 (en) * | 2020-01-15 | 2021-08-31 | Chih-Hsien Liao | Brake caliper device having automatic pad wear compensation mechanism |
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