CN218118419U

CN218118419U - Arrangement structure of electronic mechanical brake calipers

Info

Publication number: CN218118419U
Application number: CN202222576962.4U
Authority: CN
Inventors: 李运动; 朱元澄; 郭锋亮; 唐琳; 丁文艳; 邹九涛
Original assignee: Wuhu Bethel Automotive Safety Systems Co Ltd
Current assignee: Wuhu Bethel Automotive Safety Systems Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-12-23
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses an electronic mechanical type brake caliper's arrangement structure, including wheel and brake caliper assembly, the brake caliper assembly includes the executor, the axial dimension of executor reduces along with the direction that is close to wheel rim center. The utility model discloses an arrangement structure of electronic mechanical type brake caliper can make full use of wheel end space, and whole brake caliper's compact structure, the arrangement of brake caliper in the rim of being convenient for avoids simultaneously taking place to interfere with the spare part at wheel center part such as vehicle drive shaft.

Description

Arrangement structure of electronic mechanical brake calipers

Technical Field

The utility model belongs to the technical field of braking system, specifically speaking, the utility model relates to an arrangement structure of electronic mechanical type brake caliper.

Background

In the prior art, an arrangement space of an Electromechanical brake caliper (EMB for short) at a wheel end of a whole vehicle is very limited, and the EMB is very easy to interfere with peripheral parts, and a main interfering part is an actuator of the Electromechanical brake caliper. In the prior art, a motor is usually arranged between a brake cylinder and the center of a wheel, when an automobile turns, the wheel can swing left and right, and an actuator is easy to interfere with parts such as a driving shaft. With the development of technology, many parts are arranged on the wheel, the space of the wheel center is more and more applied, and the arrangement of more parts of the electromechanical brake caliper away from the wheel center is beneficial to adapting to future vehicles.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. To this end, the utility model provides an electromechanical brake caliper's arrangement structure, the purpose is avoided taking place to interfere with the vehicle drive shaft.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: an arrangement of electromechanical brake calipers includes a wheel and a brake caliper assembly including an actuator having an axial dimension that decreases in a direction proximate to an axis of rotation of the wheel.

The actuator comprises an actuator shell, a motor and a gear set, wherein the gear set at least comprises a first gear, a second gear and a third gear, the second gear is a duplicate gear, the second gear is composed of a first driven gear and a second driving gear, the first driven gear is meshed with the first gear, the second driving gear is meshed with the third gear, the diameter of the first driven gear is larger than that of the second driving gear, the first driven gear is closer to the inner side of the vehicle body relative to the third gear, the first gear is arranged at one end, far away from a driving shaft, in the actuator, and the third gear is arranged at one end, close to the driving shaft, in the actuator.

The actuator further comprises an actuator shell cover connected with the actuator shell, and the actuator shell cover is in a stepped shape or a gradient shape.

The distance between the third gear and the first inner wall surface of the actuator is smaller than the sum of the distance between the first driven gear and the second inner wall surface of the actuator and the tooth width of the first driven gear.

The outer surface of the actuator comprises a first outer wall surface, a second outer wall surface and a third outer wall surface, the first outer wall surface is located on the outer side of the first inner wall surface, the second outer wall surface is located on the outer side of the second inner wall surface, the first outer wall surface, the second outer wall surface and the third outer wall surface are sequentially arranged along the length direction of the actuator, and the first outer wall surface is located between the second outer wall surface and the driving shaft in the radial direction.

The actuator shell and/or the actuator shell cover are/is provided with a structure with heat dissipation ribs.

And heat dissipation ribs are arranged between the first outer wall surface and the second outer wall surface and between the second outer wall surface and the third outer wall surface.

The motor is located at the observation hole of the brake caliper assembly.

The first gear is provided with a sensor and an ECU, the motor is a brushless motor, and the sensor is a motor corner signal sensor.

The motor does not pass over an inner brake pad of the brake caliper assembly in an axial direction.

The electrical connector of the actuator is arranged at an end remote from the drive shaft.

The utility model discloses an arrangement structure of electronic mechanical type brake caliper designs cascaded shape or slope shape with the executor, and axial dimension reduces in the direction that is close to the drive shaft, arranges motor, sensor, ECU, electric connector isotructure in the one end of keeping away from the drive shaft, and make full use of wheel end space avoids simultaneously taking place to interfere with the vehicle drive shaft.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is a schematic structural view of a brake caliper;

FIG. 2 is a schematic view of the brake caliper arrangement;

FIG. 3 is a schematic diagram of a state after wheels swing when the automobile turns;

FIG. 4 is a schematic diagram of an actuator according to a first embodiment;

FIG. 5 is a schematic diagram of an actuator according to a second embodiment;

labeled as: 1. a brake caliper assembly; 2. an actuator; 201. a motor; 202. a first gear; 203. a second gear; 204. a third gear; 205. a sensor; 206. an ECU; 207. an actuator shell cover; 208. an electrical connector; 209. an actuator housing; 210. heat dissipation ribs; 211. a first outer wall surface; 212. a second outer wall surface; 3. a brake caliper assembly; 301. a caliper body; 302. a brake cylinder; 303. an inner brake pad; 4. a rim; 5. a knuckle 6, a drive shaft; 7. a gear set.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

Example one

As shown in fig. 1 and 2, the utility model provides an arrangement structure of electromechanical brake caliper, including wheel rim 4, brake caliper assembly 1 and knuckle 5, brake caliper assembly 1 includes executor 2 and brake caliper subassembly 3, and executor 2 includes motor 201, and brake caliper subassembly 3 includes brake cylinder 302, and motor 201 is located between 4 inner walls of wheel rim and the brake cylinder 302, and the observation hole position of brake caliper subassembly 3 promptly.

As shown in fig. 1 and 4, the actuator 2 further includes an actuator housing 209, an actuator housing cover 207, a sensor 205, an ECU206, and a gear train 7, and the gear train 7 is a two-stage fixed-axis gear transmission mechanism. The gear set 7 is located in an inner cavity of the actuator housing 209, and the actuator housing cover 207 is fixedly connected to the actuator housing 209. The gear set 7 at least comprises a first gear 202, a second gear 203 and a third gear 204, the first gear 202 is fixedly connected with the output end of the motor 201, the second gear 203 is a duplicate gear, the second gear 203 is composed of a first driven gear and a second driving gear, the first driven gear is meshed with the first gear 202, the second driving gear is meshed with the third gear 204, the first driven gear and the second driving gear are coaxially and fixedly connected, and the diameter of the first driven gear is larger than that of the second driving gear. The first gear 202 and the first driven gear form a first stage gear transmission mechanism, and the second driving gear and the third gear 204 form a second stage gear transmission mechanism. The axial height of the first-stage gear transmission mechanism is higher than that of the second-stage gear transmission mechanism by taking the mounting surface of the actuator on the brake caliper assembly 3 as a reference. The first gear 202, the second gear 203 and the third gear 204 are arranged in a stepped manner, the axial height of the first gear 202 is the highest, the axial height of the second gear 203 is the next highest, and the axial height of the third gear 204 is the lowest. When the brake caliper assembly 1 is mounted on the steering knuckle 5, the first driven gear is located on the inner side of the vehicle body, the first gear 202 is arranged at one end of the actuator far away from the driving shaft 6, the third gear 204 is arranged at one end of the actuator near the driving shaft 6, the driving shaft 6 is connected with the wheel, the axial dimension of the actuator 5 is reduced along the direction near the center of the wheel, the axial dimension of the actuator 5 refers to the maximum axial height of the actuator 5 in the axial direction, and the axial direction of the actuator 5 is parallel to the axis of the motor 201 and is perpendicular to the mounting surface of the actuator 5 on the brake caliper assembly 3 by taking the mounting surface of the actuator 5 on the brake caliper assembly 3 as a reference. As shown in fig. 3, when the vehicle is turned, the wheel swings to one side, the included angle between the wheel and the driving shaft 6 becomes smaller, the brake caliper assembly is installed on the wheel and swings together with the wheel, and in the prior art, the actuator of the brake caliper is easy to interfere with the driving shaft under the working condition. The utility model discloses in, in the orientation that is close to drive shaft 6, executor 2's axial dimension reduces gradually, can adapt to the vehicle wheel wobbling angle when turning to the limit to the emergence of the interference condition has been avoided.

As shown in fig. 1-4, the actuator housing cover 207 is stepped in shape. The distance between the third gear 204 and the first inner wall surface of the actuator 2 is the same as the distance between the first driven gear and the second inner wall surface of the actuator 2. The outer surface of the actuator 2 includes a first outer wall surface 211, a second outer wall surface 212, and a third outer wall surface, the first outer wall surface 211 is located on the outer side of the first inner wall surface, the second outer wall surface 212 is located on the outer side of the second inner wall surface, the first outer wall surface 211, the second outer wall surface 212, and the third outer wall surface are sequentially arranged along the length direction of the actuator cover 207, the length direction of the actuator cover 207 is perpendicular to the axial direction of the actuator 2, and the first outer wall surface 211 is located between the second outer wall surface 212 and the driving shaft 6. The distance between the first outer wall surface 211 and the mounting surface of the actuator 5 on the caliper assembly 3 is smaller than the distance between the second outer wall surface 212 and the mounting surface of the actuator 5 on the caliper assembly 3, the distance between the second outer wall surface 212 and the mounting surface of the actuator 5 on the caliper assembly 3 is smaller than the distance between the third outer wall surface and the mounting surface of the actuator 5 on the caliper assembly 3, the distance between the first outer wall surface 211 and the mounting surface of the actuator 5 on the caliper assembly 3 is the thickness of the first portion of the actuator 2, the distance between the second outer wall surface 212 and the mounting surface of the actuator 5 on the caliper assembly 3 is the thickness of the second portion of the actuator 2, and the thickness of the first portion of the actuator 2 is smaller than the thickness of the second portion of the actuator 2, so that the formed actuator 2 is of a stepped structure as a whole. The first inner wall surface and the first outer wall surface 211 are two opposite surfaces in the thickness direction of a first shell cover part of the actuator shell cover 207, the second inner wall surface and the second outer wall surface 212 are two opposite surfaces in the thickness direction of a second shell cover part of the actuator shell cover 207, the third outer wall surface is an outer surface of a third shell cover part of the actuator shell cover 207, the thickness directions of the first shell cover part, the second shell cover part and the third shell cover part are parallel to the axial direction of the actuator 2, the first shell cover part, the second shell cover part and the third shell cover part are sequentially arranged along the length direction of the actuator shell cover 207, the first shell cover part, the second shell cover part and the third shell cover part are sequentially and fixedly connected, a step structure is formed between the first shell cover part and the second shell cover part, and a step structure is formed between the second shell cover part and the third shell cover part. The first inner wall surface and the second outer wall surface 212 are sequentially arranged along the length direction of the actuator case cover 207, the first inner wall surface and the second outer wall surface 212 are inner surfaces along the actuator case cover 207, the thickness of the first case cover part is the same as that of the second case cover part, the first inner wall surface and the third gear 204 are oppositely arranged, the second inner wall surface and the first driven gear are oppositely arranged, and the first driven gear is positioned between the second inner wall surface and the second driving gear.

As shown in fig. 1 and 3, a sensor 205 and a first gear 202 are sequentially mounted on a shaft of a motor 201, the sensor 205 may be a motor rotation angle signal sensor, an ECU206 is disposed above the sensor 205, the ECU206 is disposed in an actuator housing cover 207, and an electrical connector 208 is disposed on one side of the ECU 206. Since the motor 201 is disposed at the end remote from the drive shaft 6, the actuator 2 does not interfere with the drive shaft 6 when the vehicle is at the turning limit.

As shown in fig. 1, the motor 2a is a brushless motor, the motor 2a is not overlapped with the inner brake plate 303 in the axial direction, the motor 201 is positioned on the upper side of the inner brake plate 303, and the heat generated by the inner brake plate 303 is prevented from directly impacting the motor 201; the actuator housing 209 is connected to the flange of the caliper body 301 by bolts, screws or rivets to fix the actuator and the caliper assembly 3 together, wherein the third gear 204204 is connected to a motion conversion mechanism in the caliper assembly 3 for transmitting power. The number of the fixed points between the actuator shell 209 and the caliper body 301 is not less than 2; the actuator 2 is integrally of a symmetrical structure and is universal left and right, the overall structure of the actuator is more attractive, and the structure of the radiating ribs is arranged on the actuator shell and the shell cover, so that the overall heat radiation of the actuator is facilitated.

As shown in fig. 1, the brake caliper assembly 3 is of a floating caliper structure, and the brake caliper assembly 3 has a brake cylinder 302 and a hook structure in which an inner brake pad, a brake disc and an outer brake pad are sequentially installed. The structure of the brake caliper assembly 3, the motor 201 is as known to those skilled in the art. The gear set is used for transmitting the rotating force generated by the motor 201 to the motion conversion mechanism to drive the motion conversion mechanism to perform corresponding actions, and the motion conversion mechanism converts the rotating motion of the motor 201 into the linear motion of the piston to realize the braking function of the brake caliper. The third gear 204 is a power output component of the gear set, and the third gear 204 is connected with the motion conversion mechanism.

As shown in fig. 1, the back of the caliper body 301 provides a space for the motor 201, the motor 201 is disposed on the back of the caliper body 301, the motor 201 is located at an observation hole, the observation hole is disposed on the surface of the caliper body 301, the observation hole is opposite to the brake disc, the width of the observation hole of the caliper is greater than the diameter of the motor 201, so that the observation hole space of the caliper body can accommodate the motor body, the motor 201 is mounted to fully utilize the idle space of the caliper body, the whole brake is more compact in structure, and the caliper is convenient to be disposed in the rim; the position of motor is reserved to the observation hole of the brake caliper body, and brake caliper body can widen, and the cornerite grow for the brake caliper body is more pleasing to the eye, and brake caliper body overall structure is symmetrical, controls not dividing.

As shown in fig. 2, the brake caliper assembly 1 is installed inside a wheel rim 4, the axis of the motor 201 is parallel to the axis of the wheel rim 4, and the motor 201 is arranged between the brake cylinder of the brake caliper body 301 and the inner circular surface of the wheel rim 4, so that the wheel end space can be fully utilized, and the problem of interference with a driving shaft is solved; the motor 201 is arranged at a position close to the inner wall of the rim 4, and peripheral air is driven to flow at an accelerated speed in the movement process of the rim, so that the heat dissipation of the motor is facilitated.

Example two

As shown in fig. 5, the present embodiment is different from the first embodiment in that: the effect of avoiding interference can also be achieved by adding the heat dissipating ribs 210 on the outer side of the actuator cover 207 and forming the actuator cover into a shape similar to a slope.

As shown in fig. 5, the actuator cover 207 has heat dissipating ribs 210 on the first, second, and third

outer walls

211, 212, and 210. The thickness of the heat dissipation rib arranged on the first outer wall surface 211 is gradually increased from one end to the other end, the distance between the end with the minimum thickness of the heat dissipation rib and the driving shaft 6 is smaller than the distance between the end with the maximum thickness of the heat dissipation rib and the driving shaft 6, the thickness direction of the heat dissipation rib is parallel to the axial direction of the actuator 2, and the heat dissipation rib is fixedly connected with the first shell cover part and the second shell cover part. The thickness of the heat dissipation rib arranged on the second outer wall surface 212 is gradually increased from one end to the other end, the distance between the end with the minimum thickness of the heat dissipation rib and the driving shaft 6 is smaller than the distance between the end with the maximum thickness of the heat dissipation rib and the driving shaft 6, the thickness direction of the heat dissipation rib is parallel to the axial direction of the actuator 2, and the heat dissipation rib is fixedly connected with the second shell cover part and the third shell cover part.

The utility model discloses a brake caliper's arrangement structure has following advantage:

1. easy brake caliper spatial arrangement:

1. the actuator is designed into a step shape or a slope shape, the axial dimension is reduced in the direction close to the driving shaft 6, and the structures such as the motor, the sensor, the ECU, the electric connector and the like are arranged at one end far away from the driving shaft 6, so that the space of the wheel end is fully utilized, and the interference with the driving shaft 6 of the vehicle is avoided.

2. The motor is positioned at the observation hole of the brake caliper body, and the idle space of the brake caliper body is fully utilized, so that the structure of the whole brake is more compact, and the arrangement of the brake caliper in a rim is facilitated;

2. do benefit to the heat dissipation of brake caliper:

1. the arrangement structure of the brake calipers in the wheel rim arranges the motor at a position close to the inner wall of the rim, and drives peripheral air to flow at an accelerated speed in the movement process of the rim, so that the heat dissipation of the motor is facilitated;

2. the actuator shell and/or the shell cover are/is provided with a structure of a radiating rib, so that the integral radiating of the actuator is facilitated; the motor is not overlapped with the inner brake block in the axial direction and is positioned on the upper side of the inner brake block, so that the direct impact of heat generated by the inner brake block on the motor is avoided.

3. The brake caliper is more attractive overall:

the motor is arranged in calliper observation hole position, and the pincers body needs the widen, cornerite grow, braking pincers assembly bilateral symmetry for the braking pincers body is more pleasing to the eye.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. The utility model provides an arrangement structure of electromechanical brake caliper, includes wheel and brake caliper assembly, and the brake caliper assembly includes executor, its characterized in that: the axial dimension of the actuator decreases with the direction closer to the wheel rotation axis.

2. An arrangement of electromechanical brake calipers according to claim 1, wherein: the actuator comprises an actuator shell, a motor and a gear set, wherein the gear set at least comprises a first gear, a second gear and a third gear, the second gear is a duplicate gear, the second gear is composed of a first driven gear and a second driving gear, the first driven gear is meshed with the first gear, the second driving gear is meshed with the third gear, the diameter of the first driven gear is larger than that of the second driving gear, the first driven gear is closer to the inner side of the vehicle body relative to the third gear, the first gear is arranged at one end, far away from a driving shaft, in the actuator, and the third gear is arranged at one end, close to the driving shaft, in the actuator.

3. An arrangement of electromechanical brake calipers according to claim 2, wherein: the actuator further comprises an actuator shell cover connected with the actuator shell, and the actuator shell cover is in a stepped shape or a gradient shape.

4. An arrangement of electromechanical brake calipers according to claim 2, wherein: the distance between the third gear and the first inner wall surface of the actuator is smaller than the sum of the distance between the first driven gear and the second inner wall surface of the actuator and the tooth width of the first driven gear.

5. An arrangement of electromechanical brake calipers according to claim 4, wherein: the outer surface of the actuator comprises a first outer wall surface, a second outer wall surface and a third outer wall surface, the first outer wall surface is located on the outer side of the first inner wall surface, the second outer wall surface is located on the outer side of the second inner wall surface, the first outer wall surface, the second outer wall surface and the third outer wall surface are sequentially arranged along the length direction of the actuator, and the first outer wall surface is located between the second outer wall surface and the driving shaft in the radial direction.

6. An arrangement of electromechanical brake calipers according to claim 3, wherein: the actuator shell and/or the actuator shell cover are/is provided with a structure with heat dissipation ribs.

7. An arrangement of electromechanical brake calipers according to claim 5, wherein: and heat dissipation ribs are arranged between the first outer wall surface and the second outer wall surface and between the second outer wall surface and the third outer wall surface.

8. An arrangement of electromechanical brake calipers according to claim 2, wherein: the motor is located at the observation hole of the brake caliper assembly.

9. An arrangement of electromechanical brake calipers according to claim 2, wherein: the first gear is provided with a sensor and an ECU, the motor is a brushless motor, and the sensor is a motor corner signal sensor.

10. An arrangement of electromechanical brake calipers according to claim 2, wherein: the electric machine does not pass over an inner brake pad of the brake caliper assembly in an axial direction.

11. An arrangement of electromechanical brake calipers according to claim 2, wherein: the electrical connector of the actuator is arranged at an end remote from the drive shaft.