CN220770009U - Caliper assembly and vehicle with same - Google Patents

Abstract

The utility model discloses a caliper assembly and a vehicle with the same. The caliper comprises a body, a connecting part and a claw, wherein one end of the connecting part is connected with the body, the other end of the connecting part is connected with the claw, the body, the connecting part and the claw define an insertion groove for the brake disc to extend into, and an installation cavity communicated with the insertion groove is formed in the body; the ball screw assembly is arranged in the mounting cavity, the screw is rotatably arranged in the body, the nut is sleeved on the screw, and the piston is sleeved outside the nut; the first connecting bolt is inserted into the connecting hole, and part of the first connecting bolt is positioned in the second limiting groove and is in threaded connection with the second limiting groove; the first brake block is connected with the piston, the second brake block is arranged on the clamping jaw, and the first brake block and the second brake block are respectively positioned on two sides of the brake disc and are used for being abutted with the brake disc. According to the caliper assembly provided by the utility model, the braking effect of the caliper assembly is better.

Description

Caliper assembly and vehicle with same

Technical Field

The utility model mainly relates to the technical field of automobile brake parts, in particular to a caliper assembly and a vehicle with the caliper assembly.

Background

The brake system is an indispensable part of modern passenger cars, and the traditional brake system is that by stepping on a brake pedal, pipeline pressure is formed, hydraulic pressure is generated and a caliper piston is pushed, so that the braking effect of the caliper is poor.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the caliper assembly, and the caliper assembly has a good braking effect.

The utility model also provides a vehicle which comprises the caliper assembly.

A caliper assembly according to an embodiment of the present utility model includes a caliper, a ball screw assembly, a first connecting bolt, a first brake pad, and a second brake pad. The caliper comprises a body, a connecting part and a claw, wherein one end of the connecting part is connected with the body, the other end of the connecting part is connected with the claw, the body, the connecting part and the claw define an insertion groove for a brake disc to extend into, and a mounting cavity communicated with the insertion groove is formed in the body; the ball screw assembly is arranged in the mounting cavity and comprises a screw rod, a nut and a piston, the screw rod is rotatably arranged in the body, the nut is sleeved on the screw rod, the piston comprises a positioning section, the positioning section is sleeved outside the nut, a first limit groove extending along the axial direction of the nut is formed in the outer peripheral wall of the nut, a second limit groove extending along the axial direction of the positioning section is formed in the inner peripheral wall of the positioning section, and the first limit groove and the second limit groove are opposite and communicated and jointly define a connecting hole; the first connecting bolt is inserted into the connecting hole and is partially positioned in the first limiting groove, and is partially positioned in the second limiting groove and is in threaded connection with the second limiting groove; the first brake block is connected with the piston, the second brake block is arranged on the clamping jaw, and the first brake block and the second brake block are respectively positioned on two sides of the brake disc and are used for being abutted with the brake disc.

According to the caliper assembly provided by the embodiment of the utility model, the body, the connecting part and the clamping jaw of the caliper are limited to be used for the insertion groove into which the brake disc extends, the ball screw assembly is arranged in the installation cavity communicated with the insertion groove in the body, the screw is rotatably arranged in the body, the nut is sleeved on the screw, the positioning section of the piston is sleeved outside the nut, the first limiting groove on the outer peripheral wall of the nut and the second limiting groove on the inner peripheral wall of the positioning section are communicated and jointly define the connecting hole, and the first connecting bolt is inserted in the connecting hole. The first brake block is connected with the piston, the second brake block is arranged on the clamping jaw, and the first brake block and the second brake block are respectively positioned on two sides of the brake disc. The rotating torque of the screw rod is converted into axial thrust of the nut, the nut and the piston are pushed to move towards the direction close to the insertion groove, and the piston drives the first brake block to move towards the direction close to the brake disc, so that the first brake block is attached to the brake disc; the lead screw continues to rotate, the first brake block is abutted against the brake disc, the clamping jaw and the second brake block on the clamping jaw move towards the direction close to the brake disc, so that the second brake block is abutted against the brake disc, the brake disc stops rotating, and the braking effect of the caliper assembly is good.

In some embodiments of the utility model, the inner wall of the first limit groove is V-shaped in a cross section perpendicular to the axis of the nut.

In some embodiments of the utility model, the angle between the two inner wall surfaces of the first limit groove is 80 ° -100 ° in a cross section perpendicular to the axis of the nut.

In some embodiments of the present utility model, a third limiting groove is further formed in the inner peripheral wall of the positioning section, the third limiting groove is symmetrically arranged with the second limiting groove, a cutting plane is formed in the outer peripheral wall of the nut, the cutting plane is opposite to the third limiting groove, and the caliper assembly further comprises a second connecting bolt, and the second connecting bolt is inserted into the third limiting groove and is in threaded connection with the third limiting groove.

In some embodiments of the present utility model, a first groove is formed on a side, facing the piston, of the first brake block, a second groove is formed on a side, facing the first brake block, of the piston, the caliper assembly further comprises a first rubber member, a portion of the first rubber member is arranged in the first groove, a portion of the first rubber member is arranged in the second groove, the first rubber member, the first brake block and the piston are integrated, an annular first positioning groove extending along the circumferential direction of the second groove is formed on the inner circumferential wall of the second groove, and a first protrusion matched with the first positioning groove is formed on the outer circumferential wall of the first rubber member.

In some embodiments of the present utility model, the inner bottom wall of the first groove is provided with a second protrusion, and the first rubber member is provided with a third groove matched with the first protrusion.

In some embodiments of the present utility model, a fourth groove is formed on a side, facing the claw, of the second brake block, a fifth groove is formed on a side, facing the second brake block, of the claw, and the caliper assembly further includes a second rubber member, a portion of the second rubber member is disposed in the fourth groove, a portion of the second rubber member is disposed in the fifth groove, the second rubber member, the second brake block and the claw are integrated, an annular second positioning groove extending along a circumferential direction of the fifth groove is formed on an inner peripheral wall of the fifth groove, and a third protrusion matched with the second positioning groove is formed on an outer peripheral wall of the second rubber member.

In some embodiments of the present utility model, a fourth protrusion is provided on an inner bottom wall of the fourth groove, and a sixth groove that mates with the fourth protrusion is provided on the second rubber member.

In some embodiments of the present utility model, the caliper assembly further includes a motor assembly and a clamp spring. The motor assembly is connected with the body, and one end of the lead screw, which is far away from the insertion groove, extends out of the body and is connected with the motor assembly; the clamp spring is clamped on the screw rod and is located between the body and the motor assembly.

According to an embodiment of the utility model, a vehicle comprises the caliper assembly.

According to the vehicle provided by the embodiment of the utility model, the body, the connecting part and the clamping jaw of the caliper are used for limiting the insertion groove for the brake disc to extend in, the ball screw assembly is arranged in the installation cavity communicated with the insertion groove in the body, the screw is rotatably arranged in the body, the nut is sleeved on the screw, the positioning section of the piston is sleeved outside the nut, the first limiting groove on the outer peripheral wall of the nut and the second limiting groove on the inner peripheral wall of the positioning section are communicated and jointly define the connecting hole, and the first connecting bolt is inserted in the connecting hole. The first brake block is connected with the piston, the second brake block is arranged on the clamping jaw, and the first brake block and the second brake block are respectively positioned on two sides of the brake disc. The rotating torque of the screw rod is converted into axial thrust of the nut, the nut and the piston are pushed to move towards the direction close to the insertion groove, and the piston drives the first brake block to move towards the direction close to the brake disc, so that the first brake block is attached to the brake disc; the lead screw continues to rotate, the first brake block is abutted against the brake disc, the clamping jaw and the second brake block on the clamping jaw move towards the direction close to the brake disc, so that the second brake block is abutted against the brake disc, the brake disc stops rotating, the braking effect of the caliper assembly is good, and the braking of a vehicle is safer.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a front view of a caliper assembly according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a caliper assembly according to an embodiment of the present utility model;

FIG. 3 is a side view of a caliper assembly according to an embodiment of the present utility model;

FIG. 4 is a top view of a caliper assembly according to an embodiment of the present utility model;

FIG. 5 is a front view of a caliper of the caliper assembly according to an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of a caliper of the caliper assembly according to an embodiment of the present utility model;

FIG. 7 is a front view of a lead screw and nut of the caliper assembly according to an embodiment of the present utility model;

FIG. 8 is a side view of the lead screw and nut of the caliper assembly according to an embodiment of the present utility model;

FIG. 9 is a side view of a nut of the caliper assembly according to an embodiment of the present utility model;

FIG. 10 is a cross-sectional view of a nut of the caliper assembly according to an embodiment of the present utility model;

FIG. 11 is a side view of a piston of the caliper assembly according to an embodiment of the present utility model;

FIG. 12 is a partial cross-sectional view of a piston of the caliper assembly according to an embodiment of the present utility model;

FIG. 13 is a side view of a first attachment bolt of the caliper assembly in accordance with an embodiment of the present utility model;

FIG. 14 is a front view of a second attachment bolt of the caliper assembly in accordance with an embodiment of the present utility model;

FIG. 15 is a front view of a clamp spring of the caliper assembly according to the embodiment of the present utility model;

FIG. 16 is a side view of a clamp spring of the caliper assembly according to an embodiment of the present utility model;

FIG. 17 is a front elevational view of the first brake pad of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 18 is a cross-sectional view of a first brake pad of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 19 is a front view of a second brake pad of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 20 is a cross-sectional view of a second brake pad of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 21 is a front view of a brake disc of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 22 is a side view of a brake disc of the caliper assembly according to the embodiment of the present utility model;

FIG. 23 is a front view of a first rubber member of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 24 is a cross-sectional view of a first rubber member of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 25 is a front view of a second rubber member of the caliper assembly in accordance with the embodiment of the present utility model;

FIG. 26 is a cross-sectional view of a second rubber member of the caliper assembly in accordance with an embodiment of the present utility model.

Reference numerals:

100. a caliper assembly;

1. a caliper; 11. a body; 111. a mounting cavity; 12. a connection part; 121. an insertion groove; 13. a claw; 131. a fifth groove; 1311. a second positioning groove;

2. a ball screw assembly; 21. a screw rod; 22. a nut; 221. a first limit groove; 222. cutting a plane; 23. a piston; 231. a positioning section; 2311. the second limit groove; 2312. a third limit groove; 232. a second groove; 2321. a first positioning groove;

3. a first connecting bolt; 4. A second connecting bolt;

5. a first brake pad; 51. A first groove; 511. A second protrusion;

6. a second brake pad; 61. A fourth groove; 611. A fourth protrusion;

7. a first rubber member; 71. A first protrusion; 72. A third groove;

8. a second rubber member; 81. A third protrusion; 82. A sixth groove;

9. a brake disc; 91. a motor assembly; 92. and (5) clamping springs.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A caliper assembly 100 according to an embodiment of the present utility model is described below with reference to fig. 1-26.

As shown in fig. 2 and 13, the caliper assembly 100 according to the embodiment of the present utility model includes a caliper 1, a ball screw assembly 2, a first connection bolt 3, a first brake pad 5, and a second brake pad 6.

Specifically, as shown in fig. 1, 3, 5 and 6, the caliper 1 includes a body 11, a connecting portion 12 and a claw 13, one end of the connecting portion 12 is connected to the body 11, and the other end is connected to the claw 13, and as shown in fig. 1, 4, 21 and 22, the body 11, the connecting portion 12 and the claw 13 define an insertion groove 121 for the brake disc 9 to extend into.

As shown in fig. 2 and 7 to 10, the body 11 has a mounting cavity 111 therein which communicates with the insertion groove 121. The ball screw assembly 2 is arranged in the mounting cavity 111 and comprises a screw 21, a nut 22 and a piston 23, the screw 21 is rotatably arranged in the body 11, the nut 22 is sleeved on the screw 21, and the rotation torque generated when the screw 21 rotates can be converted into the axial thrust of the nut 22. As shown in fig. 11 and 12, the piston 23 includes a positioning section 231, and the positioning section 231 is sleeved outside the nut 22, so that the nut 22 can drive the piston 23 to move in the axial direction.

As shown in fig. 9 to 11, a first limiting groove 221 extending along the axial direction of the nut 22 is provided on the outer circumferential wall of the nut 22, and a second limiting groove 2311 extending along the axial direction of the positioning section 231 is provided on the inner circumferential wall of the positioning section 231, and the first limiting groove 221 and the second limiting groove 2311 are opposite and communicated and jointly define a connecting hole. The first connecting bolt 3 is inserted into the connecting hole and is partially located in the first limiting groove 221, and is partially located in the second limiting groove 2311 and is in threaded connection with the second limiting groove 2311. The nut 22 and the piston 23 can be connected in the axial direction of the nut 22, so that the piston 23 can be driven to move when the nut 22 moves to two sides in the axial direction, and the connection effect of the nut 22 and the piston 23 is good.

As shown in fig. 2, the first brake pad 5 is connected to the piston 23, the second brake pad 6 is provided on the claw 13, and the first brake pad 5 and the second brake pad 6 are respectively located on both sides of the brake disc 9 and are used for abutting against the brake disc 9. It can be understood that the rotational torque of the screw 21 is converted into the axial thrust of the nut 22, so that the nut 22 is pushed to move in the axial direction towards the direction approaching the insertion groove 121, the nut 22 drives the piston 23 to move towards the direction approaching the insertion groove 121, and the piston 23 drives the first brake pad 5 to move towards the direction approaching the brake disc 9, so that the end face of the first brake pad 5 on the side approaching the brake disc 9 is attached to the brake disc 9; at this time, the screw rod 21 continues to rotate, the first brake block 5 is stopped against the brake disc 9, the nut 22, the piston 23 and the first brake block 5 cannot continue to move, the claw 13 and the second brake block 6 on the claw 13 move towards the direction close to the brake disc 9, the second brake block 6 can be stopped against the brake disc 9, the brake disc 9 stops rotating, and the braking effect of the caliper assembly 100 is good.

When the screw rod 21 rotates reversely, the first brake block 5 and the second brake block 6 return, the first brake block 5 and the second brake block 6 are separated from contact with the brake disc 9, the piston 23 returns to the nut 22, and the brake disc 9 can continue to rotate.

According to the caliper assembly 100 of the embodiment of the present utility model, the body 11, the connection portion 12 and the claw 13 of the caliper 1 define the insertion groove 121 for the brake disc 9 to extend into, the ball screw assembly 2 is disposed in the mounting cavity 111 in the body 11 and communicated with the insertion groove 121, the screw 21 is rotatably disposed in the body 11, the nut 22 is sleeved on the screw 21, the positioning section 231 of the piston 23 is sleeved outside the nut 22, the first limiting groove 221 on the outer peripheral wall of the nut 22 and the second limiting groove 2311 on the inner peripheral wall of the positioning section 231 are communicated and jointly define the connection hole, and the first connecting bolt 3 is inserted in the connection hole. The first brake block 5 is connected with the piston 23, the second brake block 6 is arranged on the claw 13, and the first brake block 5 and the second brake block 6 are respectively positioned on two sides of the brake disc 9. The rotating torque of the screw rod 21 is converted into axial thrust of the nut 22, the nut 22 and the piston 23 are pushed to move towards the direction approaching the insertion groove 121, and the piston 23 drives the first brake block 5 to move towards the direction approaching the brake disc 9, so that the first brake block 5 is attached to the brake disc 9; the screw 21 continues to rotate, the first brake block 5 is stopped against the brake disc 9, the clamping jaw 13 and the second brake block 6 on the clamping jaw 13 move towards the direction approaching the brake disc 9, the second brake block 6 is stopped against the brake disc 9, the brake disc 9 stops rotating, and the braking effect of the caliper assembly 100 is good.

In some embodiments of the present utility model, as shown in fig. 8 and 9, the inner wall of the first limiting groove 221 is V-shaped in a cross section perpendicular to the axis of the nut 22. The centering of the first limiting groove 221 can be better, and the positioning reference axis of the first connecting bolt 3 is centered on the symmetrical plane of the two inclined planes of the V shape, so that the first connecting bolt 3 is prevented from translating.

Further, in a cross section perpendicular to the axis of the nut 22, an angle between both inner wall surfaces of the first stopper groove 221 is 80 ° to 100 °. It is understood that the angle between the two inner wall surfaces of the first limiting groove 221 may be 80 °, 82 °, 84 °, 86 °, 88 °, 90 °, 92 °, 94 °, 96 °, 98 °, or 100 °. The angle between the two inner wall surfaces of the first limiting groove 221 is not smaller than 80 degrees, so that the first connecting bolt 3 can enter the first limiting groove 221 more, the first connecting bolt 3 is reliably connected with the first limiting groove 221, and the nut 22 is reliably connected with the piston 23.

In some embodiments of the present utility model, as shown in fig. 9, 11 and 14, the inner peripheral wall of the positioning section 231 is further provided with a third limiting groove 2312, the third limiting groove 2312 is symmetrically arranged with the second limiting groove 2311, the outer peripheral wall of the nut 22 is provided with a cutting plane 222, the cutting plane 222 is opposite to the third limiting groove 2312, and the cutting plane 222 can be machined first in the machining and manufacturing process of the nut 22, and then the cutting plane 222 is placed on a machining platform, so that the first limiting groove 221 can be machined conveniently. The caliper assembly 100 further includes a second connecting bolt 4, where the second connecting bolt 4 is inserted into the third limiting groove 2312 and is in threaded connection with the third limiting groove 2312. Install at the first connecting bolt 3 of second spacing groove 2311 and install at the second connecting bolt 4 symmetry setting of third spacing groove 2312, can make the location of piston 23 comparatively accurate, and the return of piston 23 is comparatively accurate when screw 21 reverses.

In some embodiments of the present utility model, as shown in fig. 2, 17 and 18, a side of the first brake pad 5 facing the piston 23 is provided with a first groove 51, and a side of the piston 23 facing the first brake pad 5 is provided with a second groove 232, as shown in fig. 23 and 24, the caliper assembly 100 further includes a first rubber member 7, and a portion of the first rubber member 7 is disposed in the first groove 51 and a portion of the first rubber member 7 is disposed in the second groove 232, so that soft connection between the first brake pad 5 and the piston 23 can be achieved by disposing the first rubber member 7, and noise generated when the caliper assembly 100 brakes can be reduced. The first rubber piece 7, the first brake block 5 and the piston 23 are integrated, and when the screw rod 21 is reversed, the first brake block 5 driven by the piston 23 is accurate to return. An annular first positioning groove 2321 extending along the circumferential direction of the second groove 232 is provided on the inner peripheral wall of the second groove 232, and a first protrusion 71 which is matched with the first positioning groove 2321 is provided on the outer peripheral wall of the first rubber member 7. When the first protrusion 71 is matched with the first positioning groove 2321, the first rubber member 7 can be limited along the axial direction of the first rubber member 7, so that the first rubber member 7 is prevented from being disengaged from the piston 23, and the first rubber member 7 is more reliably connected with the piston 23.

Further, as shown in fig. 23 and 24, the inner bottom wall of the first groove 51 is provided with a second protrusion 511, and the first rubber member 7 is provided with a third groove 72 that mates with the first protrusion 71. When the first rubber piece 7 is connected with the first brake block 5 in a sulfur joint mode, the connecting surface of the first rubber piece 7 and the first brake block 5 is large, connection between the first rubber piece 7 and the first brake block 5 can be more reliable, and return of the first brake block 5 driven by the piston 23 when the screw 21 rotates reversely is accurate.

In the present embodiment, as shown in fig. 24, the inner wall of the second protrusion 511 is V-shaped in a cross section perpendicular to the axis of the first groove 51, and the angle between the two inner wall surfaces of the second protrusion 511 is 85 ° -95 °. It is understood that the angle between the two inner wall surfaces of the second protrusion 511 may be 85 °, 86 °, 87 °, 88 °, 89 °, 90 °, 91 °, 92 °, 93 °, 94 °, or 95 °. The angle between the two inner wall surfaces of the second bulge 511 is not smaller than 85 degrees, so that the bulge position of the second bulge 511 is prevented from being too sharp, and the sharp corner of the second bulge 511 is prevented from being broken; the angle between the two inner wall surfaces of the second protrusion 511 is not greater than 95 °, so that the second protrusion 511 can be prevented from being excessively large in size, the inner bottom wall of the first groove 51 can be prevented from being small in size, and the connecting surface of the first rubber member 7 and the first brake block 5 can be prevented from being small.

In some embodiments of the present utility model, as shown in fig. 2, 19 and 20, the side of the second brake pad 6 facing the jaw 13 has a fourth groove 61, and the side of the jaw 13 facing the second brake pad 6 has a fifth groove 131, as shown in fig. 25 and 26, the caliper assembly 100 further includes a second rubber member 8, a portion of the second rubber member 8 is disposed in the fourth groove 61, and a portion of the second rubber member 8 is disposed in the fifth groove 131, so that soft connection between the second brake pad 6 and the jaw 13 can be achieved by disposing the second rubber member 8, and noise generated when the caliper assembly 100 brakes can be reduced. The second rubber piece 8, the second brake block 6 and the clamping jaw 13 are integrated, and when the screw rod 21 is reversed, the first brake block 5 driven by the clamping jaw 13 is accurate in return. An annular second positioning groove 1311 extending in the circumferential direction of the fifth groove 131 is provided on the inner peripheral wall of the fifth groove 131, and a third protrusion 81 that mates with the second positioning groove 1311 is provided on the outer peripheral wall of the second rubber member 8. When the third protrusion 81 and the second positioning groove 1311 are matched, the second rubber member 8 can be limited along the axial direction of the second rubber member 8, so that the second rubber member 8 is prevented from being disengaged from the clamping jaw 13, and the connection between the second rubber member 8 and the clamping jaw 13 is more reliable.

Further, as shown in fig. 25 and 26, a fourth protrusion 611 is provided on the inner bottom wall of the fourth groove 61, and a sixth groove 82 is provided on the second rubber member 8 to be fitted with the fourth protrusion 611. When the second rubber piece 8 is connected with the second brake block 6 in a sulfur joint mode, the connecting surface of the second rubber piece 8 and the second brake block 6 is large, connection between the second rubber piece 8 and the second brake block 6 can be more reliable, and the second brake block 6 driven by the clamping jaw 13 returns accurately when the screw 21 rotates reversely.

In the present embodiment, as shown in fig. 26, the inner wall of the fourth protrusion 611 is V-shaped in a cross section perpendicular to the axis of the fourth groove 61, and the angle between the two inner wall surfaces of the fourth protrusion 611 is 85 ° -95 °. It is understood that the angle between the two inner wall surfaces of the fourth protrusion 611 may be 85 °, 86 °, 87 °, 88 °, 89 °, 90 °, 91 °, 92 °, 93 °, 94 °, or 95 °. The angle between the two inner wall surfaces of the fourth bulge 611 is not smaller than 85 degrees, so that the bulge position of the fourth bulge 611 is prevented from being too sharp, and the sharp corner of the fourth bulge 611 is prevented from being broken; the angle between the two inner wall surfaces of the fourth protrusion 611 is not greater than 95 °, and the size of the fourth protrusion 611 can be prevented from being excessively large, the size of the inner bottom wall of the fourth groove 61 can be prevented from being small, and the connecting surface of the second rubber member 8 and the second brake pad 6 can be prevented from being small.

In some embodiments of the present utility model, as shown in fig. 1, 15 and 16, the caliper assembly 100 further includes a motor assembly 91 and a clamp spring 92. The motor assembly 91 is connected to the body 11, and an end of the screw 21 facing away from the insertion groove 121 protrudes out of the body 11 and is connected to the motor assembly 91. The screw rod 21 can be driven to rotate through the motor assembly 91, and the screw rod 21 can be reversed through the reversing of the motor assembly 91, so that the braking and the rotation stopping of the vehicle are smooth. The jump ring 92 is blocked on the screw 21 and is positioned between the body 11 and the motor assembly 91, so that the jump ring 92 is more convenient to be connected with the screw 21.

A vehicle according to an embodiment of the present utility model includes the caliper assembly 100 described above.

According to the vehicle of the embodiment of the utility model, the body 11, the connecting part 12 and the clamping jaw 13 of the caliper 1 are limited to be used for inserting the brake disc 9, the ball screw assembly 2 is arranged in the installation cavity 111 communicated with the insertion groove 121 in the body 11, the screw 21 is rotatably arranged in the body 11, the nut 22 is sleeved on the screw 21, the positioning section 231 of the piston 23 is sleeved outside the nut 22, the first limiting groove 221 on the outer peripheral wall of the nut 22 is communicated with the second limiting groove 2311 on the inner peripheral wall of the positioning section 231 and jointly defines a connecting hole, and the first connecting bolt 3 is inserted in the connecting hole. The first brake block 5 is connected with the piston 23, the second brake block 6 is arranged on the claw 13, and the first brake block 5 and the second brake block 6 are respectively positioned on two sides of the brake disc 9. The rotating torque of the screw rod 21 is converted into axial thrust of the nut 22, the nut 22 and the piston 23 are pushed to move towards the direction approaching the insertion groove 121, and the piston 23 drives the first brake block 5 to move towards the direction approaching the brake disc 9, so that the first brake block 5 is attached to the brake disc 9; the screw rod 21 continues to rotate, the first brake block 5 is stopped against the brake disc 9, the clamping jaw 13 and the second brake block 6 on the clamping jaw 13 move towards the direction close to the brake disc 9, the second brake block 6 is stopped against the brake disc 9, the brake disc 9 stops rotating, the braking effect of the caliper assembly 100 is good, and the braking of the vehicle is safe.

Other constructions and operations of the caliper assembly 100 according to embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A caliper assembly, comprising:

the caliper comprises a body, a connecting part and a claw, wherein one end of the connecting part is connected with the body, the other end of the connecting part is connected with the claw, the body, the connecting part and the claw define an insertion groove for a brake disc to extend into, and a mounting cavity communicated with the insertion groove is formed in the body;

the ball screw assembly is arranged in the mounting cavity and comprises a screw rod, a nut and a piston, the screw rod is rotatably arranged in the body, the nut is sleeved on the screw rod, the piston comprises a positioning section, the positioning section is sleeved outside the nut, a first limit groove extending along the axial direction of the nut is formed in the peripheral wall of the nut, a second limit groove extending along the axial direction of the positioning section is formed in the inner peripheral wall of the positioning section, and the first limit groove and the second limit groove are opposite and communicated and jointly define a connecting hole;

the first connecting bolt is inserted into the connecting hole, is partially positioned in the first limiting groove, is partially positioned in the second limiting groove and is in threaded connection with the second limiting groove;

the first brake block and the second brake block are respectively positioned on two sides of the brake disc and are used for being abutted with the brake disc.

2. Caliper assembly according to claim 1, characterized in that the inner wall of the first limit groove is V-shaped in a cross section perpendicular to the axis of the nut.

3. Caliper assembly according to claim 2, characterized in that the angle between the two inner wall surfaces of the first limit groove is 80 ° -100 ° in a cross section perpendicular to the axis of the nut.

4. The caliper assembly of claim 1, wherein the inner peripheral wall of the positioning segment further has a third limiting groove, the third limiting groove is symmetrically disposed with the second limiting groove, the outer peripheral wall of the nut has a cutting plane, the cutting plane is disposed opposite to the third limiting groove, and the caliper assembly further comprises:

the second connecting bolt is inserted into the third limiting groove and is in threaded connection with the third limiting groove.

5. The caliper assembly of claim 1, wherein a side of the first brake pad facing the piston has a first groove, and a side of the piston facing the first brake pad has a second groove, the caliper assembly further comprising:

the first rubber part, part of first rubber part is located in the first recess, part is located in the second recess, first rubber part with first brake block with the piston is an organic whole piece, be equipped with on the inner peripheral wall of second recess and follow the annular first constant head tank that the circumference direction of second recess extends, be equipped with on the outer peripheral wall of first rubber part with first constant head tank complex first arch.

6. The caliper assembly of claim 5, wherein the inner bottom wall of the first recess is provided with a second protrusion, and the first rubber member is provided with a third recess that mates with the first protrusion.

7. The caliper assembly of claim 1, wherein a side of the second brake pad facing the pawl has a fourth groove and a side of the pawl facing the second brake pad has a fifth groove, the caliper assembly further comprising:

the second rubber piece, part of second rubber piece is located in the fourth recess, part is located in the fifth recess, second rubber piece with second brake block with the jack catch is an organic whole piece, be equipped with on the inner peripheral wall of fifth recess along the annular second constant head tank that the circumference direction of fifth recess extends, be equipped with on the outer peripheral wall of second rubber piece with second constant head tank complex third arch.

8. The caliper assembly of claim 7, wherein said fourth recess has a fourth protrusion on an inner bottom wall thereof and said second rubber member has a sixth recess for mating with said fourth protrusion.

9. The caliper assembly of claim 1, further comprising:

the motor assembly is connected with the body, and one end of the screw rod, which is far away from the insertion groove, extends out of the body and is connected with the motor assembly;

and the clamping spring is clamped on the screw rod and is positioned between the body and the motor assembly.

10. A vehicle comprising a caliper assembly according to any one of claims 1-9.