CN216768162U

CN216768162U - Double-shoe synchronous brake caliper and vehicle with same

Info

Publication number: CN216768162U
Application number: CN202220226964.8U
Authority: CN
Inventors: 肖光全
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-06-17
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses a double-shoe synchronous brake caliper and a vehicle thereof, wherein the brake caliper comprises a caliper body, two movable brake shoes which are arranged symmetrically left and right, and a return spring for returning the brake shoes; the movable brake shoe comprises a shoe pushing block for pushing the brake shoe, a pushing driving part for pushing the shoe pushing block to enable the two movable brake shoes to be close to each other, a spiral end face tooth matching structure is formed between the pushing driving part and the caliper body, and a moving guide structure for the pushing driving part to move axially is formed; the pushing driving piece is also fixedly connected with a bent arm-shaped control arm, and the far ends of the two control arms are connected to the same control component in a sliding manner. The vehicle comprises the brake caliper. The utility model has the advantages of small thickness size of the brake caliper, simple structure, compact layout and low manufacturing cost, and is particularly suitable for vehicles with narrow installation space of the brake caliper. The vehicle is convenient to maintain, assemble and disassemble.

Description

Double-shoe synchronous brake caliper and vehicle with same

Technical Field

The utility model relates to a speed change device for an electric vehicle, in particular to a double-shoe synchronous brake caliper and a vehicle thereof.

Background

Brake calipers are mainly used for vehicle braking, also referred to as vehicle brake calipers. The brake caliper for vehicles is a disc brake device commonly used in motor or non-motor vehicles, which applies positive pressure from the side of a brake disc of the vehicle through brake shoes, and prevents the brake disc from rotating by using frictional resistance, thereby achieving the purpose of braking the vehicle. The existing brake caliper for the vehicle has more structural forms, a few parts are single-side braking of a single shoe, and the brake caliper is mainly used for bicycles with lower movement speed. Most of the brake devices are used for bilateral braking and are mainly used for motor vehicles such as automobiles, motorcycles and the like. The brake with double-side braking is firstly pushed to the side face of the corresponding side of the brake disc by the movable shoe on one side, and then the fixed shoe on the other side is driven to move towards the brake disc by pushing the clamp body to move by the counter-acting force of the compression spring, so that the brake disc is clamped by the two brake shoes. The existing bilateral braking mode has the disadvantages that the corresponding speed is low and the abrasion consumption degrees of brake shoes on two sides are different because the two sides are executed according to the sequence of actions. For this reason, those skilled in the art have developed a caliper with synchronous braking on both sides. For example, chinese patent publication No. CN 210686773U, published as 6/5/2020, discloses a dual-cylinder disc brake, which has two brake cylinders to simultaneously drive two brake shoes to move, thereby achieving the braking effect of synchronous braking on two sides. However, since the brake cylinders are arranged on the two sides of the brake, the number of the brake cylinders is increased, the manufacturing cost is increased, the structural size of the brake in the thickness direction is increased, and the brake is poor in adaptability to a relatively narrow mounting space beside a vehicle hub. Is not suitable for two-wheeled or three-wheeled vehicles such as bicycles, motorcycles and the like. For this reason, further improvement is required.

Disclosure of Invention

The utility model aims to overcome the defect that the thickness structure size of the double-shoe synchronous brake caliper in the prior art is large, and provides the double-shoe synchronous brake caliper which is small in thickness size and suitable for being installed in a narrow space. A second object of the utility model is to provide a vehicle having a brake caliper as described above.

In order to achieve the first object, the utility model adopts the following technical scheme.

A double-shoe synchronous brake caliper comprises a caliper body, two brake shoes and a return spring for returning the brake shoes; the two brake shoes are movable brake shoes which are arranged symmetrically left and right; the movable brake shoes comprise shoe pushing blocks used for pushing the brake shoes, pushing driving parts used for pushing the shoe pushing blocks to enable the two movable brake shoes to be close to each other, and moving guide structures used for enabling the pushing driving parts to move axially and forming spiral end face tooth matching structures between the pushing driving parts and the caliper bodies; the pushing driving piece is fixedly connected with control arms, and the far ends of the two control arms are connected to the same control component in a sliding mode.

According to the double-shoe synchronous brake caliper adopting the technical scheme, a brake caliper assembly is formed by arranging the brake shoes which can only move left and right in the caliper body; the control arm and the pushing driving piece rotate around the axis of the pushing driving piece by utilizing the spiral end face tooth matching structure between the pushing driving piece and the caliper body and acting on the control component by using external force, so that two movable brake shoes positioned at the free end of the pushing driving piece are mutually closed, and the brake of a brake disc is formed; after the external force is removed, the return spring drives the pushing driving piece and the like to return so as to release the brake. Wherein, the external force can be exerted on the control component by hand pulling or foot stepping by the inhaul cable, thereby forming the torque exerted on the pushing driving part to replace the brake cylinder, and the cost is obviously reduced; the brake power can also be applied by pulling the pull rope by using the air cylinder or the oil cylinder. Because the spiral end face tooth matching structure is adopted between the pushing driving piece and the clamp body, the direction conversion of the driving power is realized by utilizing the control arm, a power driving component is not required to be arranged in the thickness direction, and the structural size in the thickness direction is obviously reduced. Even when the cylinder or the oil cylinder is used for applying the driving force for braking, only one cylinder or oil cylinder needs to be arranged, so that the manufacturing cost is reduced, and the axis of the cylinder or the oil cylinder is positioned in the vertical plane of the rotation axis of the brake disc, so that the brake disc is different from the arrangement mode that the thickness space is occupied by the arrangement mode that the axis of the existing brake cylinder is parallel to the rotation axis of the brake disc, and the size in the thickness direction cannot be increased. In addition, the reaction force of the brake disc resisting the positive pressure of the brake shoe can be directly transmitted to the shell through the pushing driving piece, the other end of the control arm can freely move, the bending moment acting on the control arm cannot be formed on the side surface of the control arm, and the thickness dimension of the control arm is made as small as possible. Therefore, even when the size of the control arm in the thickness direction is taken into consideration, the space required in the thickness direction is much smaller than the brake cylinder occupying space of the existing brake with a single brake cylinder or a double brake cylinder. The scheme can be used for hand brake parking braking of bicycles, two-wheeled motorcycles, two-wheeled electric motorcycles, three-wheeled electric motorcycles or four-wheeled vehicles and the like.

Preferably, the shoe pushing block and the pushing driving part are matched through a shaft hole to form a coaxial and relatively rotating movable connection; the control arm is fixedly connected with the pushing driving piece through a convex-concave matched torque transmission structure. The connecting component is convenient to disassemble and assemble, the reliability that the control arm drives the pushing driving piece to rotate is ensured, the pushing driving piece pushes the shoe pushing block to move, and braking motion is achieved.

Further preferably, the torque transmission structure is formed by matching a chamfered surface on the pushing driving part with a convex edge surface of a hole wall of a matching hole on the control arm. The processing convenience is improved and the fixed connection and the torque transmission reliability are ensured. The control arm limits the axial position by using the side surface of a shaft shoulder at the root part of the chamfered surface and is fixed on the pushing driving piece by using a convex-concave matching structure; preferably, the thickness of the control arm is smaller than the length of the convex-concave matching section on the pushing driving piece, so that the control arm is prevented from being in contact with and abraded by the side face of the shoe pushing block.

Preferably, the angle value of the lead angle of the helical face teeth is 40 ° to 50 °. The lead angle is too small, which may cause the push driving piece to form self-locking, thereby causing the failure of automatic reset after braking or causing the delay of reset response; selection of an excessively large lead angle may result in a need for a significant braking force to be applied to the control member, resulting in insufficient braking force or slow braking response. The advantages and disadvantages are considered overall, the parameter setting with the helix angle of 40-50 degrees is reasonable, and the ideal angle value is 45 degrees.

Preferably, the caliper body is formed by combining a left shell and a right shell, and is fixedly connected together through a bolt, an installation space for installing a brake shoe is formed between the two shells, and the installation space and the shoe pushing block together form the limitation that the brake shoe can only move left and right; a receiving hole for receiving the pushing driving piece is formed in the side wall of the shell, and a plurality of second spiral face teeth which are correspondingly meshed with the plurality of first spiral face teeth on the pushing driving piece are formed in the receiving hole; the guide structure is formed by a circular shaft hole matching structure, the diameter of a shaft rod of the guide structure is equal to the diameter of the outer diameter of the first spiral end face tooth, and a hole of the guide structure forms an orifice section of the receiving hole and is equal to the large diameter of the second spiral end face tooth. The clamp body is formed by combining a left shell and a right shell, so that the clamp body is convenient to assemble and disassemble; the brake shoe is arranged in the caliper body, and can only move left and right through the common limitation of the caliper body and the shoe pushing block, so that the brake is reliable, the metal framework of the shoe is prevented from being abraded due to the contact of the rotary pushing driving part and the brake shoe, and the service life of the shoe is prolonged; the diameter of the shaft rod is equal to the outer diameter of the first spiral end face tooth, and the hole of the guide structure forms an orifice section of the receiving hole and is equal to the major diameter of the second spiral end face tooth, so that the processing convenience of the pushing driving piece with the spiral end face teeth and the shell with the receiving hole can be improved; wherein, bulldoze the initiative piece and the casing all can show improvement machining efficiency through precision forging or precision casting's mould shaping mode integrated into one piece.

Preferably, the shoe pushing block abuts against the brake shoes, the return spring is composed of a U-shaped spring piece, and the spring piece is arranged between the two metal frameworks corresponding to the two brake shoes. The reset function is reliable by utilizing the mature technology of the existing bicycle brake shoe arrangement.

Preferably, the control member is of a circular rod-shaped or tubular structure, the control member is arranged on the two control arms in a penetrating mode, the control arms are in a bent arm shape, and a brake cable connecting structure is arranged on the control member; one side of the clamp body extends outwards to form a support arm, and a brake cable guide hole is formed in the support arm. The round structure can improve the processing convenience and reduce the manufacturing cost, and the tubular structure can reduce the weight; the control component is provided with the brake cable connecting structure, so that the cable can be conveniently connected, the interference between the cable and the shell is avoided, the brake can be realized by applying tension through the handle or the pedal, and the reliability of brake operation is ensured.

The return spring can also adopt a structure other than a U-shaped spring piece, the return spring can be a compression spring arranged between the support arm and the control component, the compression spring is sleeved on the brake cable, and a connecting structure which can push the driving piece to pull the shoe pushing block to move is arranged between the pushing driving piece and the shoe pushing block. The structure can be simplified by arranging the reset spring by utilizing the inhaul cable, so that fault points are reduced, and the reset reliability is improved. The connecting structure for pushing and pressing the driving part to pull the shoe pushing block to move can be formed by matching the split steel wire retaining ring with the annular groove at the shaft hole matching part for pushing and pressing the driving part to pull the shoe pushing block, and can also be formed by matching the elastic protruding structure of the spring and the steel ball with the annular groove.

Similarly, the reset spring is composed of an extension spring, the extension spring is connected between the control arm and the caliper body, and a connecting structure which can push the driving part to pull the shoe pushing block to move is arranged between the pushing driving part and the shoe pushing block; or the return spring is composed of a torsion spring, the torsion spring is arranged between the pushing driving part and the caliper body, and a connecting structure which can push the driving part to pull the shoe pushing block to move is arranged between the pushing driving part and the shoe pushing block; or the return spring is composed of a torsion spring, the torsion spring is arranged between the control arm and the clamp body, surrounds the pushing driving piece and is coaxial with the pushing driving piece, and a connecting structure which can push the pushing driving piece to pull the shoe pushing piece to move is arranged between the pushing driving piece and the shoe pushing piece. The reset mode with multiple structural forms is formed, the reset mode is convenient to select and use when being applied to different vehicles, and the selection range is widened.

In order to achieve the second object, the utility model adopts the following technical scheme.

A vehicle includes a two-shoe synchronous caliper that achieves the first objective.

According to the technical scheme, the brake caliper of the vehicle is small in structural size, compact in layout and convenient to maintain, assemble and disassemble. The vehicles comprise bicycles, motorcycles, three-wheeled motorcycles, four-wheeled vehicles and the like.

The double-shoe synchronous brake caliper has the advantages of small thickness, simple structure, compact layout and low manufacturing cost, and is particularly suitable for vehicles with narrow installation space of the brake caliper. The vehicle with the brake caliper comprises a bicycle, a two-wheel motorcycle, a two-wheel electric motorcycle, a three-wheel electric motorcycle or a four-wheel vehicle, and the like, and the brake caliper has the advantages of low manufacturing cost, small occupied space and convenient maintenance, assembly, disassembly and operation.

Drawings

Fig. 1 is a schematic isometric view of the structure of the present invention.

FIG. 2 is a schematic perspective view of a part of the structure of the present invention.

Fig. 3 is an exploded view of the combination of the shoe pusher, the push actuator and the control arm according to the present invention.

Fig. 4 is a front view of the push driving member in the present invention.

Fig. 5 is a partial structural schematic perspective view of the housing of the present invention.

Fig. 6 is a schematic isometric view of a part of the internal structure of embodiment 1 of the present invention.

FIG. 7 is a front view showing a schematic structure of embodiment 2 of the present invention.

Detailed Description

The present invention is further described with reference to the accompanying drawings, but the utility model is not limited thereby within the scope of the described embodiments.

Embodiment 1, referring to fig. 1, 2, 3, 4, 5, 6, a two-shoe synchronous brake caliper includes a caliper body 1, two brake shoes having brake shoes 8, and a return spring for returning the brake shoes; the two brake shoes are movable brake shoes which are arranged symmetrically left and right; the movable brake shoe comprises a shoe pushing block 2 for pushing a brake shoe 8, a pushing driving part 3 for pushing the shoe pushing block 2 to enable the two movable brake shoes to be close to each other, a spiral end face tooth matching structure is formed between the pushing driving part 3 and the caliper body 1, and a moving guide structure for the pushing driving part 3 to move axially is formed; the pushing driving piece 3 is also fixedly connected with a control arm 4 in a bent arm shape, and the far ends of the two control arms 4 are connected to the same control component 5 in a sliding mode.

The shoe pushing block 2 and the pushing driving part 3 are matched through a shaft hole to form coaxial and relatively-rotating movable connection; the control arm 4 is fixedly connected with the pushing driving piece 3 through a convex-concave matched torque transmission structure; the torque transmission structure is formed by matching two chamfered surfaces 32 on the pushing driving part 3 and two convex edge surfaces 41 of a matching hole wall on the control arm 4, the axial position of the control arm 4 is limited by the side surface of a shaft shoulder at the root of the chamfered surface, the control arm 4 is fixed on the pushing driving part 3 by convex-concave matching, and the thickness of the control arm 4 is smaller than the length of a convex-concave matching section on the pushing driving part 3, so that the control arm 4 is prevented from being in contact abrasion with the side surface of the shoe pushing block 2. The angle value of the lead angle of the helical end face teeth is 40 to 50 degrees, and the specific angle value of the embodiment is 45 degrees.

The caliper body 1 is formed by combining a left shell and a right shell and is fixedly connected together through bolts, an installation space for installing a brake shoe 8 is formed between the two shells, and the two shells and the shoe push block 2 jointly form the limitation that the brake shoe 8 can only move left and right; particularly, a three-side frame-shaped mounting groove is formed on the caliper body 1 to limit three peripheries of the brake shoe 8, and a retaining wall 2a is formed on the shoe pushing block 2 to limit the other periphery of the brake shoe 8, so that the brake shoe 8 can only move left and right; a receiving hole for receiving the pushing driving piece 3 is formed in the side wall of the shell, and a plurality of second spiral face teeth 13 which are correspondingly meshed with the plurality of first spiral face teeth 31 on the pushing driving piece 3 are formed in the receiving hole; the guide structure is formed by a circular shaft hole matching structure, the diameter of the shaft rod of the guide structure is equal to the diameter of the outer diameter of the first spiral end face tooth 31, and the hole of the guide structure forms an orifice section of the receiving hole and is equal to the large diameter of the second spiral end face tooth 13.

The return spring is composed of a U-shaped spring piece 9, and the spring piece 9 is arranged between the two metal frameworks 8a corresponding to the two brake shoes 8. Wherein, be equipped with reed draw-in groove 1c on the pincers body 1, the U-shaped middle part of spring leaf 9 is arranged in reed draw-in groove 1c, is equipped with the reed on the friction disc 8b of brake shoe 8 and dodges the groove, should dodge the groove and be blind groove structure, and during the free section of friction disc 8b inserted the reed and dodge the groove, the lateral surface supported and leaned on metal skeleton 8a, the free section of friction disc 8b was decided on the tank bottom to can form to brake shoe 8 and bulldoze towards wall 2a direction on shoe ejector pad 2.

The control member 5 is in a round rod-shaped or tubular structure, the control member 5 penetrates through the two control arms 4, and the control member 5 is provided with a brake cable connecting structure and is connected with a brake cable through the brake cable connecting structure; a support arm 11 extends outwards from one side of the caliper body 1, a brake cable guide hole 1a is formed in the support arm 11, and the support arm 11 and the brake cable guide hole 1a are formed by combining corresponding parts of a left shell and a right shell. The brake cable connecting structure is characterized in that a through hole 5a penetrating through a control member 5 is adopted, one end of a brake cable is fixed on the control member 5 through the through hole, and the other end of the brake cable penetrates out of a brake cable guide hole 1a and then is connected with a hand brake control handle, a foot brake pedal or a brake cylinder or a piston rod of a brake oil cylinder according to different vehicles.

The two shells form receiving holes through local bulges, the shell close to the vehicle is extended with two mounting arms 12, the two mounting arms 12 are symmetrically extended from the bulges along the length direction, waist-shaped mounting holes 1b are formed at the far ends of the mounting arms 12, and the waist-shaped mounting holes 1b are extended along the thickness direction, so that the initial distance between the two movable brake shoes and the side surface of the brake disc is adjusted through the waist-shaped mounting holes 1b, and the synchronous braking of the two sides is ensured; the mounting arm 12 can be fixed to the upper mounting base member 7 by a screw fastener, and the mounting base member 7 is fixed to a frame or an axle of a vehicle, thereby fixing the present two-shoe synchronous caliper.

In embodiment 2, referring to fig. 7, the return spring is a compression spring 10 disposed between the support arm 11 and the control member 5, the compression spring is sleeved on the brake cable 15, and a connection structure for pushing the driving member 3 to move the shoe pushing block 2 is provided between the pushing driving member 3 and the shoe pushing block 2. Wherein, bulldoze the connection structure that 3 pulling shoes ejector pad 2 of driving part removed, can be pushing and bulldozing 3 pulling shoes ejector pad 2's shaft hole cooperation part, form through the cooperation that sets up split steel wire retaining ring and ring channel, also can form through the elastic bulge structure of spring with the steel ball and the cooperation of ring channel.

As will be clear to those skilled in the art, the specific structure of the connecting structure for the pushing driving member 3 to pull the shoe pushing block 2 to move belongs to the prior art, and need not be shown in the drawings.

Except for the structure and the arrangement mode of the return spring, the rest of the structure of the embodiment is the same as that of the embodiment 1, and the description is omitted.

In embodiment 3, the return spring may be formed by an extension spring, the extension spring is connected between the control arm 4 and the caliper body 1, and the connection structure that the driving member 3 can pull the shoe pushing block 2 to move is provided between the driving member 3 and the shoe pushing block 2.

The rest of the structure of this embodiment is the same as embodiment 2, and is not described herein again.

In embodiment 4, the return spring may also be formed by a torsion spring, the torsion spring is disposed between the push driving member 3 and the caliper body 1, and a connection structure is provided between the push driving member 3 and the shoe pushing block 2, where the push driving member 3 can pull the shoe pushing block 2 to move.

In embodiment 5, the return spring is formed by a torsion spring, the torsion spring is disposed between the control arm 4 and the caliper body 1, surrounds the push driving member 3, and is disposed coaxially with the push driving member 3, and a connection structure is provided between the push driving member 3 and the shoe pushing block 2, in which the push driving member 3 can pull the shoe pushing block 2 to move.

Embodiment 6, with reference to fig. 1, 2, 3, 4, 5, 6 and 7, a vehicle comprising the two-shoe synchronous brake caliper of any of

embodiments

1, 2, 3, 4 or 5.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A double-shoe synchronous brake caliper comprises a caliper body (1), two brake shoes and a return spring for returning the brake shoes; the brake is characterized in that the two brake shoes are movable brake shoes which are arranged symmetrically left and right; the movable brake shoe comprises a shoe pushing block (2) for pushing a brake shoe (8), a pushing driving part (3) for enabling the two movable brake shoes to be close to each other by pushing the shoe pushing block (2), a spiral end face tooth matching structure is formed between the pushing driving part (3) and the caliper body (1), and a moving guide structure for enabling the pushing driving part (3) to move axially is formed; the pushing driving piece (3) is fixedly connected with control arms (4), and the far ends of the two control arms (4) are connected to the same control component (5) in a sliding mode.

2. Double-shoe synchronous brake caliper according to claim 1, wherein the shoe pusher (2) and the push driving member (3) are fitted through a shaft hole to form a coaxial relative rotation movable connection; the control arm (4) is fixedly connected with the pushing driving piece (3) through a torque transmission structure in convex-concave fit.

3. Double-shoe synchronous brake caliper according to claim 2, wherein the torque transmission means are formed by a chamfered surface on the thrust driver (3) matching a ribbed surface of a wall of a mating bore on the control arm (4).

4. A synchronous brake caliper according to claim 1, wherein the angle of the lead angle of the helical face teeth has a value of 40 ° to 50 °.

5. The double-shoe synchronous brake caliper according to claim 1, wherein the caliper body (1) is formed by combining a left shell and a right shell, and is fixedly connected together through a bolt, an installation space for installing the brake shoe (8) is formed between the two shells, and the two shells and the shoe push block (2) together form a restriction that the brake shoe (8) can only move left and right; a receiving hole for receiving the pushing driving piece (3) is formed in the side wall of the shell, and a plurality of second spiral end surface teeth (13) which are correspondingly meshed with the plurality of first spiral end surface teeth (31) on the pushing driving piece (3) are formed in the receiving hole; the guide structure is formed by a circular shaft hole matching structure, the diameter of a shaft rod of the guide structure is equal to the diameter of the outer diameter of the first spiral end face tooth (31), and a hole of the guide structure forms an orifice section of the receiving hole and is equal to the large diameter of the second spiral end face tooth (13).

6. Double-shoe synchronous brake caliper according to claim 5, wherein the shoe pusher (2) abuts against the brake shoes (8), the return spring being constituted by a U-shaped spring plate (9), the spring plate (9) being arranged between two metal frames (8 a) corresponding to the two brake shoes (8).

7. A double-shoe synchronous brake caliper according to any one of claims 1 to 6, wherein the control member (5) is of a circular rod-shaped or tubular structure, the control member (5) is arranged on the two control arms (4) in a penetrating manner, the control arms (4) are of a bent arm shape, and a brake cable connecting structure is arranged on the control member (5); one side of the clamp body (1) extends outwards to form a support arm (11), and a brake cable guide hole (1 a) is formed in the support arm (11).

8. A double-shoe synchronous brake caliper according to claim 7, wherein in a configuration other than that the return spring is formed by a U-shaped leaf spring (9), the return spring is a compression spring (10) provided between the arm (11) and the control member (5), the compression spring is fitted over the brake cable (15), and a connection structure for pushing the driving member (3) to move the shoe pushing block (2) is provided between the pushing driving member (3) and the shoe pushing block (2).

9. The synchronous brake caliper according to any one of claims 1 to 5, wherein the return spring is formed by an extension spring, the extension spring is connected between the control arm (4) and the caliper body (1), and a connecting structure capable of pulling the shoe pushing block (2) to move by pushing the driving member (3) is provided between the pushing driving member (3) and the shoe pushing block (2); or the return spring is composed of a torsion spring, the torsion spring is arranged between the pushing driving piece (3) and the caliper body (1), and a connecting structure which can push the pushing driving piece (3) to pull the shoe pushing block (2) to move is arranged between the pushing driving piece (3) and the shoe pushing block (2); or, the return spring is composed of a torsion spring, the torsion spring is arranged between the control arm (4) and the caliper body (1), surrounds the pushing driving piece (3) and is coaxially arranged with the pushing driving piece (3), and a connecting structure which can push the pushing driving piece (3) to pull the shoe pushing block (2) to move is arranged between the pushing driving piece (3) and the shoe pushing block (2).

10. A vehicle comprising a two-shoe synchronous brake caliper according to any one of claims 1 to 9.