CN211231355U

CN211231355U - Compensation double-return device and compensation double-return floating caliper type hydraulic disc brake

Info

Publication number: CN211231355U
Application number: CN201921400832.7U
Authority: CN
Inventors: 汤以山; 肖月林; 凡爱华; 赵宸
Original assignee: Taizhou Tianyu Traffic Equipment Co ltd
Current assignee: Taizhou Tianyu Traffic Equipment Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-08-11
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a compensation double-return device and compensation double-return floating caliper type hydraulic disc brake, which comprises a brake caliper, a fixed brake shoe, a brake disc, a movable brake shoe, an upper sliding shaft, a guide pin, a brake shoe spring, a lower sliding shaft and an automatic compensation double-return device, wherein one end of the brake caliper is provided with the fixed brake shoe, the other end of the brake caliper is provided with the movable brake shoe, two ends of the brake shoe spring are respectively connected with the fixed brake shoe and the movable brake shoe, the brake disc is arranged between the fixed brake shoe and the movable brake shoe, the automatic compensation double-return device is arranged at the right end of the upper sliding shaft, a return device is additionally arranged between the brake caliper and a bracket sliding rod, when the brake is relieved, the brake caliper drives the fixed brake shoe to leave the brake disc, a certain gap is generated, the problem of dragging torque between the fixed brake shoe and the brake disc is effectively solved, the problem of, greatly prolonging the service life of the whole return floating caliper type hydraulic disc brake.

Description

Compensation double-return device and compensation double-return floating caliper type hydraulic disc brake

Technical Field

The utility model relates to a floating caliper type hydraulic disc brake technical field, concretely relates to floating caliper type hydraulic disc brake of compensation double return device and compensation double return.

Background

The common hydraulic disc brake structure of motorcycles, electric vehicles and bicycles in the current market can be divided into a fixed caliper type and a floating caliper type. 1. Two symmetrical pistons are arranged on two sides of the fixed clamp type hydraulic disc brake disc. When braking, brake fluid in the brake master cylinder enters the brake cylinder at the same time to push the two pistons to move, so that the brake shoe compresses the brake disc. In the structure, two brake pistons of the brake oil cylinder are arranged, the brake fluid needs to be communicated left and right, the processing procedures are increased, the difficulty is increased, and the cost is increased. The inboard hydro-cylinder and the piston that need set up of brake disc make wheel and brake disc apart from the increase, have also increased the design degree of difficulty. In addition, the fixed brake caliper requires that the movement direction of the brake piston is perpendicular to the brake disc, and if the brake piston is slightly inclined, the brake shoe and the brake disc cannot be completely attached, so that noise and vibration are generated during braking. The fixed caliper type brake device has the advantages that the two brake pistons can return, dragging torque can be avoided between the brake disc and the brake shoe, and the kinetic energy loss and the abrasion between the brake disc and the brake shoe are reduced. 2. The floating caliper type hydraulic disc brake oil cylinder is arranged on one side of the brake disc, one brake shoe block is arranged on the piston and is called as a movable brake shoe block, and the other brake shoe block is arranged on the caliper body and is called as a fixed brake shoe block. The brake caliper is installed on the vehicle through a support, and the brake caliper floats left and right on a sliding shaft of the support. When braking, the movable brake shoe is pushed by the piston to press against the brake disc under the action of oil pressure in the oil cylinder, and meanwhile, the whole brake caliper is pushed to move in the opposite direction by the counter force of the brake disc to the movable brake shoe, so that the fixed brake shoe is also pressed against the other side of the brake disc until complete braking. Different from a fixed caliper, the floating caliper only has one oil cylinder on one side, and an oil pipe or an oil duct crossing a brake disc is not needed, so that the brake caliper has the advantages of good rigidity, small volume, light weight, simple structure and more application in the market. When the brake is released, the oil pressure in the oil cylinder is reduced, the piston returns under the action of the rectangular sealing ring, the movable brake shoe leaves the brake disc, the reaction force of the brake disc on the caliper body disappears, and the fixed brake shoe and the brake disc are kept in contact due to the fact that no return force acts. Because there is certain jump in the brake disc plane, there is certain nonparallel brake disc and fixed brake shoe, and there is certain effort between braking pincers and the support, so produce the dragging moment between fixed brake shoe and the brake disc, increased the kinetic energy loss and also increased brake disc and brake shoe wearing and tearing.

Based on above, the pincers type hydraulic pressure dish that floats is stopped and is superior to fixed pincers type hydraulic pressure dish and is stopped, use more in market, but there is the contact between fixed brake shoe and the brake disc, produce the dragging moment, it also has increased brake disc and brake shoe wearing and tearing to have increased the kinetic energy loss, consequently, need to design one kind and to make the pincers type hydraulic pressure dish that floats stop fixed brake shoe return of the pincers type, and produce the clearance between the brake disc, solve dragging moment problem between fixed brake shoe and the brake disc, reduce the kinetic energy loss and reduce the novel pincers type hydraulic pressure dish that floats of brake disc and brake shoe wearing and tearing problem and brake.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a dish support stationary that stops, braking pincers control on the support slide bar and float, increase a return means between braking pincers and support slide bar, when removing the braking, make braking pincers take fixed brake shoe to leave the brake disc to the two return means of compensation and the two return of compensation that produce certain clearance clamp formula hydraulic pressure dish that floats are stopped.

In order to solve the problems, the utility model provides a compensation double-return device and a compensation double-return floating caliper type hydraulic disc brake, which comprises a brake caliper, a fixed brake shoe, a brake disc, a movable brake shoe, an upper sliding shaft, a guide pin, a brake shoe spring, a lower sliding shaft and an automatic compensation double-return device, wherein one end of the brake caliper is provided with the fixed brake shoe, the other end of the brake caliper is provided with the movable brake shoe, the guide pin for connecting the two ends is arranged between the two ends of the brake caliper, one end of the fixed brake shoe is provided with the brake shoe spring, the two ends of the brake shoe spring are respectively connected with the fixed brake shoe and the movable brake shoe, the brake disc is arranged between the fixed brake shoe and the movable brake shoe, the two ends of the brake caliper are respectively arranged on the upper sliding shaft and the lower sliding shaft through a sliding shaft mounting hole 1b and a lower sliding shaft, the automatic compensation double-return device is arranged at the right end of the upper sliding shaft.

Preferably, the automatic compensation double-return device comprises a friction block pressure rod, a dustproof sleeve limiting clamp, an O-shaped pressure spring, a limiting screw, a brake caliper return pressure spring, a friction sleeve and a friction block, wherein the limiting screw is used for installing the brake caliper return pressure spring and the friction sleeve at the right end of an upper sliding shaft installation hole 1b, the limiting screw is fixed on the upper sliding shaft, the friction sleeve slides leftwards and rightwards on the limiting screw under stress, the upper sliding shaft installation column 1a is provided with friction block installation holes 1d which are symmetrically arranged corresponding to the installation position of the friction sleeve, the friction block installation holes 1d are internally provided with the friction block and a friction block pressure rod, the O-shaped pressure spring is arranged at the outer end of the friction block pressure rod to enable the friction block to be tightly pressed on the friction sleeve, so that the friction block and the brake caliper generate friction force, the dustproof sleeve is arranged at the front end of the limiting screw and extends to the side, the dustproof sleeve is sleeved with a dustproof sleeve limiting clamp.

Preferably, the upper sliding shaft and the lower sliding shaft are both fixedly connected with the bracket through threads.

Preferably, the upper sliding shaft and the lower sliding shaft are respectively sleeved with an upper sliding rubber sleeve and a lower sliding rubber sleeve.

Preferably, a piston is installed at the inner end of the brake caliper, and one end of the piston is in transmission connection with a movable brake shoe.

Preferably, a piston dust ring and a rectangular sealing ring are respectively sleeved on the piston.

Preferably, one end of the brake caliper is provided with a bleeding nozzle.

Adopt above-mentioned structure, its beneficial effect lies in:

the utility model discloses increase a return means between braking pincers and support slide bar, when removing the braking, make braking pincers take fixed brake shoe to leave the brake disc to produce certain clearance, can effectively solve between fixed brake shoe and the brake disc dragging torque problem and reduce the kinetic energy loss and reduce brake disc and brake shoe wearing and tearing problem, can prolong the holistic life of return floating caliper type hydraulic pressure dish brake greatly.

The utility model discloses automatic compensation principle behind the wearing and tearing of activity brake shoe: after the movable brake shoe is worn, when the brake caliper brakes, the movable brake shoe is pushed by the piston to press the brake disc leftwards under the action of oil pressure in the oil cylinder. When the brake is released, the oil pressure in the oil cylinder is reduced, the piston returns to the right under the action of the rectangular sealing ring, the movable brake shoe leaves the brake disc rightwards under the action of the brake shoe spring, the rightward return amount of the piston under the action of the rectangular sealing ring is fixed, the gap between the movable brake shoe and the brake disc is also fixed, and the abrasion loss of the movable brake shoe is automatically compensated by the leftward movement distance of the piston.

The utility model discloses automatic compensation principle after fixed brake shoe piece wearing and tearing: after the fixed brake shoe is worn, when the brake caliper brakes, the movable brake shoe is pushed by the piston to press the brake disc leftwards under the action of oil pressure in the oil cylinder, meanwhile, the counter force of the brake disc to the movable brake shoe pushes the whole brake caliper to move rightwards in the opposite direction, when the brake caliper moves rightwards in the opposite direction, the O-shaped pressure spring, the friction block pressure rod, the friction block, the friction sleeve and the fixed brake shoe move rightwards along with the brake caliper, the friction sleeve compresses the brake caliper return pressure spring, when the friction block moves rightwards to a limit screw limit position due to the abrasion of the fixed brake shoe, the friction block can not move rightwards any more, the whole brake caliper continues to move rightwards in the opposite direction under the counter force of the brake disc to the movable brake shoe, at the moment, the friction block moves on the friction sleeve to automatically compensate the abrasion of the fixed brake shoe, so that the fixed brake shoe is also pressed to the, until full braking. When the brake is released, the oil pressure in the oil cylinder is reduced, the piston returns rightwards under the action of the rectangular sealing ring, and the movable brake shoe leaves the brake disc rightwards under the action of the brake shoe spring. Along with the disappearance of the reaction force of the brake disc to the brake caliper, the return pressure spring of the brake caliper recovers, the friction sleeve is pushed to recover, the friction block pressure rod, the O-shaped pressure spring, the brake caliper and the fixed brake shoe move along with the friction sleeve in the direction (leftwards) away from the brake disc, and the fixed brake shoe and the brake disc generate a fixed gap.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the self-compensating double-return floating caliper type hydraulic disc brake;

FIG. 2 is a schematic view of the main structure of the self-compensating double-return floating caliper type hydraulic disc brake;

FIG. 3 is a schematic sectional view of the automatic compensation double return floating caliper type hydraulic disc brake A-A;

FIG. 4 is a schematic cross-sectional view of the self-compensating double-return floating caliper type hydraulic disc brake B-B;

FIG. 5 is a left side view structural diagram of the self-compensating double-return floating caliper type hydraulic disc brake;

FIG. 6 is a schematic diagram of a rear view structure of the self-compensating double-return floating caliper type hydraulic disc brake;

FIG. 7 is a schematic structural view of the self-compensating dual-return device;

FIG. 8 is a schematic view of a main structure of the self-compensating double-return floating caliper type hydraulic disc brake caliper;

FIG. 9 is a schematic cross-sectional view of a C-C section of the self-compensating double-return floating caliper type hydraulic disc brake caliper;

in the figure: the brake caliper comprises a brake caliper 1, a brake shoe fixed 2, a brake disc 3, a support 4, a lower sliding rubber sleeve 5, a movable brake shoe 6, a piston 7, an upper sliding shaft 8, an upper sliding rubber sleeve 9, a friction block pressing rod 10, a dust-proof sleeve 11, a dust-proof sleeve limiting clamp 12, a pressure spring of 13O type, a release nozzle 14, a limiting screw 15, a brake caliper return pressure spring 16, a friction sleeve 17, a friction block 18, a piston dust-proof ring 19, a rectangular sealing ring 20, a guide pin 21, a brake shoe spring 22, a lower sliding shaft 23, an upper sliding shaft mounting column 1a, an upper sliding shaft mounting hole 1b, a lower sliding shaft mounting hole 1c and a friction block mounting hole 1 d.

Detailed Description

The invention is further explained below with reference to the drawings and examples.

The first embodiment is as follows: a compensation double-return device and a compensation double-return floating caliper type hydraulic disc brake comprise a brake caliper 1, a fixed brake shoe 2, a brake disc 3, a movable brake shoe 6, an upper sliding shaft 8, a guide pin 21, a brake shoe spring 22, a lower sliding shaft 23 and an automatic compensation double-return device, wherein one end of the brake caliper 1 is provided with the fixed brake shoe 2, the other end of the brake caliper 1 is provided with the movable brake shoe 6, the guide pin 21 for connecting two ends is arranged between two ends of the brake caliper 1, one end of the fixed brake shoe 2 is provided with the brake shoe spring 22, two ends of the brake shoe spring 22 are respectively connected with the fixed brake shoe 2 and the movable brake shoe 6, the brake disc 3 is arranged between the fixed brake shoe 2 and the movable brake shoe 6, and two ends of the brake caliper 1 are respectively arranged on the upper sliding shaft 8, the lower sliding shaft 8 and the movable brake shoe 6 through a sliding shaft mounting hole 1b and, The automatic compensation double-return device is arranged at the right end of the upper sliding shaft 8 on the lower sliding shaft 23, the upper sliding shaft 8 and the lower sliding shaft 23 are fixedly connected with the support 4 through threads, the upper sliding shaft 8 and the lower sliding shaft 23 are respectively sleeved with an upper sliding rubber sleeve 9 and a lower sliding rubber sleeve 5, a piston 7 is mounted at the inner end of the brake caliper 1, one end of the piston 7 is in transmission connection with a movable brake shoe 6, and a piston dust ring 19 and a rectangular sealing ring 20 are respectively sleeved on the piston 7.

Example two: the automatic compensation double-return device comprises a friction block pressing rod 10, a dustproof sleeve 11, a dustproof sleeve limiting clamp 12, an O-shaped pressure spring 13, a limiting screw 15, a brake caliper return pressure spring 16, a friction sleeve 17 and a friction block 18, wherein the limiting screw 15 is used for installing the brake caliper return pressure spring 16 and the friction sleeve 17 at the right end of an upper sliding shaft installation hole 1b from the right end of the upper sliding shaft 8, the limiting screw 15 is fixed on the upper sliding shaft 8, the friction sleeve 17 slides left and right on the limiting screw 15 under stress, friction block installation holes 1d which are symmetrically arranged are arranged on an upper sliding shaft installation column 1a of the brake caliper corresponding to the installation position of the friction sleeve 17, the friction block 18 and the friction block pressing rod 10 are all installed in the friction block installation holes 1d, the O-shaped pressure spring 13 is installed at the outer end of the friction block pressing rod 10 to press the friction block 18 on the friction sleeve 17 tightly, so that the friction block 18 and, the rest technical scheme is the same as the first embodiment.

Example three: the dustproof sleeve 11 is sleeved at the front end of the limit screw 15 and extends to the side end of the friction block pressing rod 10 from the left end, the dustproof sleeve 11 is sleeved with a dustproof sleeve limit clamp 12, and other technical schemes are the same as those of the first to second embodiments.

The brake caliper 1 is installed on an upper sliding shaft 8 and a lower sliding shaft 23 of a support through a sliding shaft installation hole 1b and a lower sliding shaft installation hole 1c, the upper sliding shaft installation hole 1b of the brake caliper is processed into a through hole, a brake caliper return pressure spring 16 and a friction sleeve 17 are installed at the right end of the upper sliding shaft installation hole 1b from the right end of the upper sliding shaft installation hole, a position of the friction sleeve 17 installed on the limit screw 15 is longer than the friction sleeve 17, the size of the part of the position of the friction sleeve 17 installed on the limit screw 15, which is longer than the friction sleeve 17, is the size of a gap between the fixed brake shoe 2 and the brake disc 3 after the brake caliper 1 and the fixed brake shoe 2 return, the limit screw 15 is fixed on the upper sliding shaft 8 and cannot move, and the friction sleeve 17 can slide left and right on the limit screw. Two symmetrical friction block mounting holes 1d are added on the sliding shaft mounting column 1a on the brake caliper corresponding to the mounting position of the friction sleeve 17, the friction blocks 18 and the friction block pressure lever 10 are arranged in the two friction block mounting holes, the O-shaped pressure spring 13 is arranged at the outer end of the friction block pressure lever 10, the two friction blocks 18 are tightly pressed on the friction sleeve 17, the friction blocks 18 and the friction sleeve 17 generate certain friction force, when the force exerted on the friction sleeve 17 is smaller than the friction between the pad 18 and the friction sleeve 17, the friction sleeve 17 is relatively immobile with respect to the caliper 1, wherein the return pressure of the brake caliper return pressure spring 16 is larger than the resistance of the brake caliper 1 floating left and right on the sliding shaft 8 and the lower sliding shaft 23 on the bracket, the return pressure of the brake caliper return pressure spring 16 is smaller than the friction force between the friction block 18 and the friction sleeve 17, and the friction force between the friction block 18 and the friction sleeve 17 is smaller than the thrust of the piston 7.

When braking, the movable brake shoe 6 is pushed by the piston 7 to press the brake disc 3 leftwards under the action of oil pressure in the oil cylinder, meanwhile, the whole brake caliper 1 is pushed to move rightwards in the opposite direction by the counter force of the brake disc 3 to the movable brake shoe 6, when the brake caliper 1 moves rightwards in the opposite direction, the O-shaped pressure spring 13, the friction block pressure rod 10, the friction block 18, the friction sleeve 17 and the fixed brake shoe 2 move rightwards in the opposite direction along with the brake caliper 1, and the friction sleeve 17 compresses the brake caliper return pressure spring 16, so that the fixed brake shoe 2 is pressed against the other side of the brake disc 3 until complete braking.

When braking is relieved, oil pressure in the oil cylinder is reduced, the piston 7 returns to the right under the action of the rectangular sealing ring 20, the movable brake shoe 6 leaves the brake disc 3 to the right under the action of the brake shoe spring 22, the brake caliper return pressure spring 16 recovers along with disappearance of the reaction force of the brake disc 3 on the brake caliper 1, the friction sleeve 17 is pushed to return, the friction block 18, the friction block pressure rod 10, the O-shaped pressure spring 13, the brake caliper 1 and the fixed brake shoe 2 move along with the friction sleeve 17 in the direction (to the left) of leaving the brake disc 3, and the fixed brake shoe 2 and the brake disc 3 generate a fixed gap.

The foregoing is illustrative and explanatory of the invention and is not intended to limit the advantages attainable thereby, and it is within the scope of the present application to practice the invention with simple modifications to the structure and/or one or more of the advantages achieved in some embodiments.

Claims

1. The utility model provides a two return means of compensation and two return of compensation float pincers formula hydraulic pressure dish are stopped which characterized in that: the brake caliper comprises a brake caliper (1), a fixed brake shoe (2), a brake disc (3), a movable brake shoe (6), an upper sliding shaft (8), a guide pin (21), a brake shoe spring (22), a lower sliding shaft (23) and an automatic compensation double-return device, wherein one end of the brake caliper (1) is provided with the fixed brake shoe (2), the other end of the brake caliper is provided with the movable brake shoe (6), the guide pin (21) connecting two ends of the brake caliper (1) is arranged between the two ends of the brake caliper (1), one end of the fixed brake shoe (2) is provided with the brake shoe spring (22), two ends of the brake shoe spring (22) are respectively connected with the fixed brake shoe (2) and the movable brake shoe (6), the brake disc (3) is arranged between the fixed brake shoe (2) and the movable brake shoe (6), and two ends of the brake caliper (1) are respectively connected with the fixed brake shoe (2) and the movable, The lower sliding shaft mounting hole (1 c) is mounted on the upper sliding shaft (8) and the lower sliding shaft (23), and the automatic compensation double-return device is arranged at the right end of the upper sliding shaft (8).

2. The compensating double-return device and the compensating double-return floating caliper type hydraulic disc brake as claimed in claim 1, wherein: the automatic compensation double-return device comprises a friction block pressing rod (10), a dustproof sleeve (11), a dustproof sleeve limiting clamp (12), an O-shaped pressure spring (13), a limiting screw (15), a brake caliper return pressure spring (16), a friction sleeve (17) and a friction block (18), wherein the brake caliper return pressure spring (16) and the friction sleeve (17) are installed at the right end of an upper sliding shaft installation hole (1 b) by the limiting screw (15), the limiting screw (15) is fixed on the upper sliding shaft (8), the friction sleeve (17) slides left and right on the limiting screw (15) under stress, symmetrical friction block installation holes (1 d) are formed in the upper sliding shaft installation column (1 a) of the brake caliper corresponding to the installation position of the friction sleeve (17), and the friction block pressing rod (10) and the friction block are installed in the friction block installation hole (1 d), o type pressure spring (13) are installed to clutch blocks depression bar (10) outer end and are made clutch blocks (18) sticis on friction sleeve (17), make clutch blocks (18) and friction sleeve (17) produce frictional force, stop screw (15) front end is located and the left end extends to clutch blocks depression bar (10) side to dirt proof boot (11) cover, the cover is equipped with the spacing card of dirt proof boot (12) on dirt proof boot (11).

3. The compensating double-return device and the compensating double-return floating caliper type hydraulic disc brake according to claim 1, which are characterized in that: the upper sliding shaft (8) and the lower sliding shaft (23) are fixedly connected with the support (4) through threads.

4. The compensating double-return device and the compensating double-return floating caliper type hydraulic disc brake according to claim 1, which are characterized in that: the upper sliding shaft (8) and the lower sliding shaft (23) are respectively sleeved with an upper sliding rubber sleeve (9) and a lower sliding rubber sleeve (5).

5. The compensating double-return device and the compensating double-return floating caliper type hydraulic disc brake according to claim 1, which are characterized in that: the brake caliper is characterized in that a piston (7) is installed at the inner end of the brake caliper (1), and one end of the piston (7) is connected with a movable brake shoe block (6) in a transmission mode.

6. The compensated double-return device and the compensated double-return floating caliper hydraulic disc brake according to claim 5, wherein: and a piston dustproof ring (19) and a rectangular sealing ring (20) are respectively sleeved on the piston (7).

7. The compensating double-return device and the compensating double-return floating caliper type hydraulic disc brake according to claim 1, which are characterized in that: and one end of the brake caliper (1) is provided with an air release nozzle (14).