摘要:
A combined brake release solenoid valve (15-20) and motor driven debooster (22-30) has a plunger 23 forming part of the debooster, which, on brake re-application is moved to a flow-restricting position in which there is only a restricted connection between the brake master cylinder and the slave cylinder, so as to avoid over-rapid brake re-application. In one embodiment, the plunger is positioned to provide a stop for the solenoid valve. In another embodiment, the plunger coacts with a separate valve seat.
摘要:
A fluid-tight connection between a pair of pipes (1, 2) containing hydraulic fluid is formed by a pair of connectors of the invention. Each connector has a body part (4, 5) engaged respectively with the pipes (1, 2), the body parts being coupled together by a coupling sleeve (3) which engages a shoulder 20 of one of the body parts and is locked to the body parts by a circlip 23 engaged within grooves 22 and 25 respectively in the other body part and the sleeve. Each body part has a respective seal member (6, 7) each incorporating a diaphragm (6B, 7B) sealing over an end of its associated body part and a bead (6A, 7A) engaging the internal wall of the sleeve (3). Air trapped between the diaphragms (6B, 7B) is expelled past the seal members during insertion of the connector parts into the sleeve. Application of system pressure subsequently ruptures the diaphragms to establish communication between the pipes (1,2) and urges the seals outwardly to seal against leakage of system fluid.
摘要:
A vehicle brake has a fixed backplate (1) carrying a pair of friction elements (2, 3) and an actuator operable to urge the elements into braking engagement with a rotary braking surface. An abutment (5) for the elements (2, 3) has a portion (10A) which is deflectable by load on the elements arising from braking torque. A radiation input means (10) directs radiation at a surface (11A) of the deflectable portion (10A) and means are provided to sense radiation after its impingement on said portion and transmit the sensed radiation to means (14) producing a responsive electrical output representing deflections of said portion.
摘要:
A combined brake release solenoid valve (15-20) and motor driven debooster (22-30) has a plunger 23 forming part of the debooster, which, on brake re-application is moved to a flow-restricting position in which there is only a restricted connection between the brake master cylinder and the slave cylinder, so as to avoid over-rapid brake re-application. In one embodiment, the plunger is positioned to provide a stop for the solenoid valve. In another embodiment, the plunger coacts with a separate valve seat.
摘要:
A vehicle brake has a fixed backplate (1) carrying a pair of friction elements (2, 3) and an actuator operable to urge the elements into braking engagement with a rotary braking surface. An abutment (5) for the elements (2, 3) has a portion (10A) which is deflectable by load on the elements arising from braking torque. A radiation input means (10) directs radiation at a surface (11A) of the deflectable portion (10A) and means are provided to sense radiation after its impingement on said portion and transmit the sensed radiation to means (14) producing a responsive electrical output representing deflections of said portion.
摘要:
A modulator assembly for a vehicle braking system includes valve means (12, 14) for isolating a master cylinder from a brake actuator when a wheel slip condition arises at a braked wheel. Pressure modifying means is provided in the form of a piston (16) which is moved axially by rotation of a motor armature 11 via a screw threaded connection (23, 24) to modify the braking pressure to correct the slip condition. Axial movement of the armature 11 moves a valve stem (14) axially to close the valve means (12, 14).
摘要:
A brake actuator has a body (8) containing a pair of brake-applying members (l0, ll) which may be actuated hydraulically to separate the friction elements of a brake into engagement with a rotatable braking surface. The members (l0, ll) are interconnected by a mechanism in the form of a shaft (l2) of which respective end portions (l3, l4) are provided with reversible threaded portions of opposite hand which engage corresponding threads (l0A, llA) within the members (l0, ll), the shaft being constrained against axial movement between bearings (l6, l7). Any excess movement of one of the members relative to the other is transmitted to that other member such as to cause an opposite proportional, usually equal, movement of said other member, irrespective of forces arising from servo effects in the brake.