CN210440493U

CN210440493U - Floating brake for hub motor

Info

Publication number: CN210440493U
Application number: CN201920909989.6U
Authority: CN
Inventors: 张兴琦; 韩富秋; 周哉松; 姜迪
Original assignee: Zhejiang VIE Science and Technology Co Ltd
Current assignee: Zhejiang VIE Science and Technology Co Ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-05-01
Anticipated expiration: 2029-06-17

Abstract

The utility model relates to a wheel hub motor stopper field discloses a floating stopper for wheel hub motor, and it includes the support, pincers body, the piston, the uide pin, interior clutch blocks, outer clutch blocks, pincers body be the integrated into one piece structure, and the support includes fixed part and assembly portion, and the uide pin activity is pegged graft in pincers body and is fixed on the support, and during the braking, the direction of sliding of interior clutch blocks and is parallel with the axis of uide pin. The support is wholly in a shape like the Chinese character 'ren', the number of the fixing parts is two, the assembling part is fixedly connected with one ends of the two fixing parts, and the assembling part and the two fixing parts form the support in the shape like the Chinese character 'ren'. The utility model provides a stopper simple structure, convenient dismantlement, good heat dissipation. At first, the support adopts the integral type structure, and installation, dismantlement and maintenance are all very convenient, and the structure is small and exquisite compact simultaneously, simple process, good heat dissipation. The clamp body also adopts an integrated structure, so that a mounting bolt is omitted, the process is simplified, and the cost is lower.

Description

Floating brake for hub motor

Technical Field

The utility model relates to a stopper field has especially related to a floating stopper for in-wheel motor.

Background

The hub motor is used as a novel automobile power unit and directly applies driving force to wheels. Parts such as a speed reducer, a transmission shaft, a differential mechanism and the like are omitted, the automobile structure is simplified, the energy transfer efficiency is improved, and the method is one of the key development directions in the field of new energy automobiles. Then, the integrated hub motor driving wheel provides new requirements for the brake, the hub motor is small in size and compact in structure, and the brake arrangement space is smaller compared with the traditional brake wheel; in addition, the hub motor is generally of an outer rotor structure, the hub of the hub motor serves as a rotating component, and the brake can be arranged on the edge of the hub only, so that new challenges are provided for installation, disassembly and maintenance of the brake.

Patent No. 201810473529 discloses a bracket break type fixed guide pin analyzing brake. The structural support is of a disconnected type, and the support consists of three parts: support, upper connecting rod, lower connecting rod. The mounting parts are more, the process is complex, inconvenience is brought to mounting, dismounting and maintenance of the bracket, and the cost is higher; in addition, the outer contour surface of the bracket is large, and a heat dissipation air duct of the brake friction block and the brake disc is blocked to a certain extent. Meanwhile, the clamp body is of a split structure, the middle of the clamp body is connected through a bolt, the process is complex, and the installation of the clamp body has the characteristics of complex process and inconvenient installation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses complicated according to current stopper structure, the assembly is inconvenient and the technology is complicated, can not adapt to defects such as current in-wheel motor moreover, provides a floating stopper for in-wheel motor.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a floating brake for an in-wheel motor comprising

The bracket is used for being fixedly arranged on a vehicle and is a fixing piece;

the clamp body is internally provided with a cylinder body which is a movable part;

the piston is arranged in the cylinder body of the caliper body in a clearance fit manner, and can axially move along the cylinder body under the driving of hydraulic pressure during braking;

the guide pin movably connects the bracket and the caliper body together, and the caliper body axially moves along the guide pin in the direction opposite to the movement of the piston in the braking process;

the inner friction block is arranged in a braking area formed by the caliper body and the support and is connected with the support in a sliding manner, and when the caliper body brakes, the inner friction block is pushed by the piston to slide towards the brake disc until the inner friction block is attached to the brake disc;

the outer friction block is arranged in a braking area formed by the caliper body and the bracket and moves synchronously with the caliper body; when braking, the caliper body drives the outer friction block to move synchronously so that the outer friction block is attached to the brake disc; the pincers body is the integrated into one piece structure, and the support includes fixed part and assembly portion, and the uide pin activity is pegged graft in the pincers body and is fixed on the support, and during the braking, the direction of sliding of interior clutch blocks and is parallel with the axis of uide pin. The pliers body and the bracket with the structure are compact in assembly, few in used connecting parts, very convenient to install, disassemble and maintain, small and compact in structure, simple in process and good in heat dissipation. The clamp body also adopts an integrated structure, so that a mounting bolt is omitted, the process is simplified, and the cost is lower.

Preferably, the whole bracket is in a shape like a Chinese character 'ren', the number of the fixing parts is two, the assembling part is fixedly connected with one end of each of the two fixing parts, and the assembling part and the two fixing parts form the bracket in the shape like the Chinese character 'ren'. The herringbone support enables the support to be of a triangular structure, so that the mounting strength of the support is guaranteed, and the support of the structure is equivalent to a hollow structure, so that the herringbone support is light in weight, good in ventilation and convenient to mount.

Preferably, the bracket is of an integrally formed structure.

Preferably, the clamp body is provided with an assembling opening matched with the assembling portion, and the assembling portion is inserted in the assembling opening. The advantage of this is that the mounting portion of the bracket is mounted in the caliper body, which makes the entire brake more compact and therefore very practical for an in-wheel motor.

Preferably, the assembly opening is of a gear opening structure, one end, located at the inner friction block, of the caliper body is provided with a jack, the socket is communicated with the assembly opening, and the guide pin penetrates through the jack and is fixed on the assembly portion located in the assembly opening. The gear opening structure can ensure that the assembling part does not interfere with the caliper body in the moving process of the caliper body, and the whole braking process is stable and reliable; and the friction block is convenient to mount and dismount.

Preferably, the end face of the assembling portion, which is close to the inner friction block, is provided with a sliding groove, and the inner friction block is clamped in the sliding groove and can slide along the sliding groove.

Preferably, the supporting framework is arranged inside the mounting part, and the cross section of the supporting framework is L-shaped or U-shaped. The support frame of L type or U type can guarantee the support intensity of sealing member.

Preferably, the cross section of the sliding chute is T-shaped, and the inner friction block and/or the sliding part matched with the cross section of the sliding chute are/is included. The matching structure can accurately and rapidly transmit the braking force to the bracket. The bracket plays a stable supporting role.

Preferably, the friction block is connected with the outer friction block through a connecting rod, and the inner friction block is connected with the outer friction block through a connecting rod; the middle part of the return spring is bent to form a clamping part, and the clamping part is clamped on the side wall of the clamp body. The return spring can reduce the dragging torque of the brake to the friction block after the brake is finished.

Preferably, the guide pin is sleeved with a rubber bushing and a dust cover, and the guide pin can play a role in dust prevention. The slide way is formed by enclosing of spring pieces in the sliding groove in a clamped mode, the section shape of the slide way is matched with that of the sliding groove, the slide way is inserted into the sliding groove and is equal to the sliding groove in length, the inner friction block and the outer friction block are in sliding connection with the spring pieces, and the spring pieces clamp the inner friction block and the outer friction block under the action of self elasticity. The slide is spacing to the portion of sliding of interior clutch blocks and outer clutch blocks to prevent its position deviation, guarantee the security of braking and the life of extension friction disc.

Preferably, the inner friction block and the outer friction block both comprise a back plate and a friction plate, the cross section of the friction plate is an arc surface, and the arc surface faces one side of the support and is concave.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect:

the utility model provides a stopper simple structure, convenient dismantlement, good heat dissipation. At first, the support adopts the integral type structure, and installation, dismantlement and maintenance are all very convenient, and the structure is small and exquisite compact simultaneously, simple process, good heat dissipation. The clamp body also adopts an integrated structure, so that a mounting bolt is omitted, the process is simplified, and the cost is lower.

Drawings

FIG. 1 is a schematic view of the assembly of a brake and a brake disc.

Fig. 2 is a schematic structural view of the brake.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is a rear view of fig. 2.

Fig. 5 is a left side view of fig. 2.

Fig. 6 is a sectional view taken from a-a of fig. 5.

Fig. 7 is a cross-sectional view of fig. 5B-B.

Fig. 8 is a schematic structural view of the caliper body.

Fig. 9 is a structural schematic diagram of an outer friction block.

Fig. 10 is a schematic structural view of the stent.

Reference numerals in the drawings correspond to technical names: the brake block comprises a support 1, a clamp body 2, a cylinder 3, a piston 4, a guide pin 5, an inner friction block 6, an outer friction block 7, a brake area 8, a brake disc 9, a fixing portion 10, an assembling portion 12, an assembling opening 13, a sliding groove 14, a sliding portion 15, a return spring 16, a clamping portion 17, a rubber bushing 18, a dust cover 19, a back plate 20, a friction plate 21, a friction plate 22, an installing hole 23, a claw 24, a threaded hole 25 and an ear seat 25.

Detailed Description

Example 1

As shown in fig. 1 to 10, the floating brake for an in-wheel motor comprises a bracket 1, wherein the bracket 1 is used for being fixedly installed on a vehicle and is a fixing part; the clamp comprises a clamp body 2, wherein a cylinder body 3 is arranged in the clamp body 2 and is a movable part; the piston 4 is arranged in the cylinder body 3 of the caliper body 2 in a clearance fit manner, and can axially move along the cylinder body 3 under the driving of hydraulic pressure during braking; the guide pin 5 is used for movably connecting the bracket 1 and the caliper body 2 together, and in the braking process, the caliper body 2 moves along the axial direction of the guide pin 5 in the direction opposite to the movement of the piston 4; the inner friction block 6 is arranged in a braking area 8 formed by the caliper body 2 and the support 1, the inner friction block 6 is connected with the support 1 in a sliding mode, and when the caliper is braked, the inner friction block 6 is pushed by the piston 4 to slide towards the brake disc 9 until the inner friction block is attached to the brake disc 9; the outer friction block 7 is arranged in a braking area 8 formed by the caliper body 2 and the bracket 1 and moves synchronously with the caliper body 2; when braking, the caliper body 2 drives the outer friction block 7 to move synchronously, so that the outer friction block 7 is attached to the brake disc 9; the caliper body 2 is an integrally formed structure, the support 1 comprises a fixing portion 10 and an assembling portion 12, the guide pin 5 is movably inserted into the caliper body 2 and fixed on the support 1, and during braking, the sliding directions of the inner friction block 6 and the inner friction block are parallel to the axis of the guide pin 5.

The inner friction blocks 6 and the outer friction blocks 7 are distributed on two sides of the brake disc 9, the caliper body 2 in the embodiment is of an integrally formed structure, the support 1 comprises a fixing portion 10 and an assembling portion 12, the guide pin 5 is movably inserted into the caliper body 2 and fixed on the support 1, and during braking, the sliding directions of the inner friction blocks 6 and the inner friction blocks 6 are parallel to the axis of the guide pin 5, namely during braking, the caliper body 2 and the inner friction blocks 6 slide relatively, so that the inner friction blocks 6 and the outer friction blocks 7 slide towards the brake disc 9.

The support 1 is wholly "people" style of calligraphy, the number of fixed part 10 is two, the one end fixed connection of assembly portion 12 and two fixed parts 10, assembly portion 12 and two fixed parts 10 constitute "people" style of calligraphy support 1, fixed part 10 is two bar-shaped spare, the mounting hole 22 has been seted up to the member tip, this mounting hole 22 is used for fixing support 1 on the automobile body, assembly portion 12 integrated into one piece is at the crossing end of two fixed parts 10, be the circular arc transition between assembly portion 12 and the fixed part 10.

The clamp body 2 is provided with an assembling opening 13 matched with the assembling part 12, and the assembling part 12 is inserted in the assembling opening 13. The assembling portion 12 is matched with the assembling port 13 in shape, the assembling port 13 is of a shifting structure, one end, located in the inner friction block 6, of the caliper body 2 is provided with a jack 28, the jack is communicated with the assembling port 13, and the guide pin 5 penetrates through the jack 28 and is fixed on the assembling portion 12 located in the assembling port 13. Because the assembly opening 13 is in an open structure, two L-shaped jaws 23 are formed on two sides of the assembly opening 13 of the caliper body 2, the outer friction block 7 is supported on the jaws 23, the caliper body 2 comprises a cylinder body 3, a piston 4 in the cylinder body 3 is used for pushing the inner friction block 6 to slide, the cylinder body 3, the assembly portion 12 and the jaws 23 enclose a braking area 8, the cross section of the braking area 8 is in a C shape, the inner friction plate 21 is arranged at the lower end of the piston 4, and during braking, the piston 4 pushes the inner friction plate 21 to slide. In this embodiment, an external thread is formed on the outer end face of the end portion of the guide pin 5, a threaded hole 24 matched with the guide pin 5 is formed in the assembling portion 12, and the guide pin 5 is in threaded fit with the threaded hole 24, so that the guide pin 5 is fixedly connected with the assembling portion 12 and the bracket 1. The bracket 1 and the guide pin 5 may be connected by other connection methods such as welding and riveting.

The end surface of the assembling part 12 close to the inner friction block 6 is provided with a sliding groove 14, and the inner friction block 6 is clamped in the sliding groove 14 and can slide along the sliding groove 14; the whole shape of assembly portion 12 is the cuboid, and spout 14 sets up and encloses the terminal surface that becomes braking district 8 in assembly portion 12, and spout 14 is for running through assembly portion 12 up end and terminal surface down to make things convenient for interior clutch blocks 6's installation and dismantlement. In order to ensure the matching strength and stability, the section of the sliding groove 14 is in a T shape, the inner friction block 6 comprises a sliding part 15 matched with the section of the sliding groove 14, the inner friction block 6 and the outer friction block 7 respectively comprise a back plate 20 and a friction plate 21, the cross section of the friction plate 21 is an arc surface, and the arc surface is concave towards one side of the support 1. The sliding part 15 is integrally formed in the middle of the back plate 20 of the inner friction block 6, and the sliding part 15 is of a T-shaped structure. In this embodiment, the inner friction block 6 and the outer friction block 7 have the same structure, a T-shaped sliding portion 15 is also arranged in the middle of the back plate 20 of the outer friction block 7, and the sliding portion 15 is installed in the sliding groove 14.

The friction block is characterized by further comprising a return spring 16, wherein the return spring 16 is connected to the inner friction block 6, one end of the return spring 16 is connected to the inner friction block 6, and the other end of the return spring 16 is connected to the outer friction block 7; the middle part of the return spring 16 is bent to form a clamping part 17, the clamping part 17 is clamped on the side wall of the caliper body 2, matching holes 27 for the connection of the return spring 16 are formed in the inner friction block 6 and the outer friction block 7, the return spring 16 is integrally shaped like a Chinese character 'ji', the return spring 16 is located between the inner friction block 6 and the outer friction block 7, and two ends of the return spring 16 are connected in the matching holes 27 of the inner friction block 6 and the outer friction block 7 in an inserting mode. The return spring 16 is positioned at one end of the inner friction block 6 and one end of the outer friction block 7, and the clamp body 2 is provided with an ear seat 26 for clamping the clamping part 17 of the return spring 16.

In order to ensure that sundries are not accumulated at the matching position of the pincer body 2 and the guide pin 5 in the sliding process of the pincer body 2, the guide pin 5 is sleeved with a rubber bushing 18 and a dust cover 19.

The working process of the brake of the embodiment is as follows: when braking is needed, a braking signal control oil path presses hydraulic oil into a cylinder body 3, the oil pressure pushes a piston 4 to extrude an inner friction block 6 to move towards a brake disc 9, when the inner friction block 6 is extruded onto the brake disc 9, the piston 4 does not move when meeting the resistance of the brake disc 9, at the moment, a caliper body 2 generates axial relative movement, the caliper body 2 slides axially along a guide pin 5 to drive an outer module block arranged on the caliper body 2 to move towards the brake disc 9, so that the inner friction block 6 and the outer friction block 7 clamp the friction disc to generate braking torque, the inner friction block 6 and the outer friction block 7 extrude a return spring 16 in the sliding process, the return spring 16 accumulates certain elastic potential energy, after hydraulic pressure is removed, the return spring 16 can ensure that the inner friction block 6 and the outer friction block 7 quickly return to initial positions to reduce dragging torque, and therefore loss of the friction disc 21 is reduced, so that braking and brake removal responses are quick.

Example 2

As shown in fig. 1 to 10, the present embodiment provides a floating brake for an in-wheel motor, and is different from embodiment 1 in that guide pins 5 are cylindrical, and the number of guide pins 5 is 2 and the guide pins are arranged in parallel.

Example 3

As shown in fig. 1 to 10, the present embodiment provides a floating brake for an in-wheel motor, and is different from embodiment 2 in that the number of the return springs 16 is two, and the two return springs are distributed on both sides of the inner friction block 6 and the outer friction block 7.

Example 4

As shown in fig. 1 to 10, the present embodiment provides a floating brake for an in-wheel motor, and is different from embodiment 1 in that a slide rail 31 surrounded by a spring plate 30 is clamped in a slide groove 14, the cross-sectional shape of the slide rail 31 matches with the cross-sectional shape of the slide groove 14, the slide rail 31 is inserted in the slide groove 14 and is as long as the slide groove 14, an inner friction block 6 and an outer friction block 7 are slidably connected with the spring plate 30, and the spring plate 30 clamps the inner friction block 6 and the outer friction block 7 under the action of its own elastic force. The slide way 31 limits the sliding part 15 of the inner friction block 6 and the outer friction block 7, thereby preventing the position deviation of the inner friction block and the outer friction block, ensuring the braking safety and prolonging the service life of the friction plates.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. A floating brake for an in-wheel motor comprising

The support (1), the support (1) is used for fixedly installing on the vehicle, it is a stationary part;

the clamp body (2), the clamp body (2) includes the cylinder block (3), is the moving part;

the piston (4) is arranged in the cylinder body (3) in a clearance fit manner, and can axially move along the cylinder body (3) under the driving of hydraulic pressure during braking;

the guide pin (5) movably connects the bracket (1) and the caliper body (2) together, and in the braking process, the caliper body (2) axially moves along the guide pin (5) in the direction opposite to the movement of the piston (4);

the inner friction block (6) is arranged in a braking area (8) formed by the caliper body (2) and the support (1), the inner friction block (6) is connected with the support (1) in a sliding mode, and when the inner friction block is braked, the inner friction block is pushed by the piston (4) to slide towards the brake disc (9) until the inner friction block is attached to the brake disc (9);

the outer friction block (7), the outer friction block (7) is arranged in a braking area (8) formed by the caliper body (2) and the bracket (1) and moves synchronously with the caliper body (2); when braking, the caliper body (2) drives the outer friction block (7) to move synchronously, so that the outer friction block (7) is attached to the brake disc (9);

the method is characterized in that: the clamp body (2) is of an integrally formed structure, the support (1) comprises a fixing portion (10) and an assembling portion (12), the guide pin (5) is movably inserted into the clamp body (2) and fixed on the support (1), and during braking, the sliding directions of the inner friction block (6) and the guide pin (5) are parallel to the axis of the guide pin (5).

2. A floating brake for an in-wheel motor as claimed in claim 1, characterized in that: the support (1) is integrally in a herringbone shape, the number of the fixing parts (10) is two, the assembling part (12) is fixedly connected with one end of each of the two fixing parts (10), and the assembling part (12) and the two fixing parts (10) form the herringbone support (1).

3. A floating brake for an in-wheel motor as claimed in claim 1, characterized in that: the bracket (1) is of an integrally formed structure.

4. A floating brake for an in-wheel motor as claimed in claim 1, characterized in that: the pliers body (2) is provided with an assembling opening (13) matched with the assembling portion (12), and the assembling portion (12) is inserted in the assembling opening (13).

5. A floating brake for an in-wheel motor as claimed in claim 4, characterized in that: the assembly opening (13) is of a gear opening structure, one end, located on the inner friction block (6), of the pliers body (2) is provided with a jack (28), the jack is communicated with the assembly opening (13), and the guide pin (5) penetrates through the jack (28) and is fixed on the assembly portion (12) located in the assembly opening (13).

6. A floating brake for an in-wheel motor as claimed in claim 1, characterized in that: the end face of the assembling part (12) close to the inner friction block (6) is provided with a sliding groove (14), and the inner friction block (6) is clamped in the sliding groove (14) and can slide along the sliding groove (14).

7. A floating brake for an in-wheel motor as claimed in claim 6, characterized in that: the cross section of the sliding chute (14) is T-shaped, and the inner friction block (6) and/or the outer friction block (7) comprise a sliding part (15) matched with the cross section of the sliding chute (14).

8. A floating brake for an in-wheel motor as claimed in claim 1, characterized in that: the friction block is characterized by further comprising a return spring (16), wherein the return spring (16) is connected to the inner friction block (6), one end of the return spring (16) is connected to the inner friction block (6), and the other end of the return spring (16) is connected to the outer friction block (7); the middle part of the return spring (16) is bent to form a clamping part (17), and the clamping part (17) is clamped on the side wall of the clamp body (2).

9. A floating brake for an in-wheel motor as claimed in claim 6, characterized in that: the rubber bushing (18) and the dust cover (19) are sleeved on the guide pin (5), a slide way (31) enclosed by a spring piece (30) is clamped in the slide groove (14), the section shape of the slide way (31) is matched with the section shape of the slide groove (14), the slide way (31) is inserted in the slide groove (14) and is as long as the slide groove (14), the inner friction block (6) and/or the outer friction block (7) are/is in sliding connection with the spring piece (30), and the spring piece (30) clamps the inner friction block (6) and/or the outer friction block (7) under the action of self elasticity.

10. A floating brake for an in-wheel motor as claimed in claim 1, characterized in that: the inner friction block (6) and the outer friction block (7) comprise a back plate (20) and a friction plate (21), the cross section of the friction plate (21) is an arc surface, and the arc surface is concave towards one side of the assembling portion (12).