CN214337728U

CN214337728U - Brake mechanism for driving and braking hub motor and hub motor

Info

Publication number: CN214337728U
Application number: CN202022664345.0U
Authority: CN
Inventors: 陈锋; 马志敏; 傅直全; 耿传亮
Original assignee: Zhejiang VIE Science and Technology Co Ltd
Current assignee: Zhejiang VIE Science and Technology Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-10-01
Anticipated expiration: 2030-11-17

Abstract

The utility model relates to the field of in-wheel motors, and discloses a brake mechanism for driving and braking an in-wheel motor and the in-wheel motor, wherein the brake mechanism (201) comprises a base (204), the base (204) is fixedly connected with a casing of a speed reducing mechanism (203), a brake is arranged on the base (204), and a casing of the brake and the base (204) are of an integrated structure; the middle part of base (204) is provided with first bearing (205), and the output and the first bearing (205) inner circle of reduction gears (203) are connected, still include the blind flange of outer end, the blind flange and the output fixed connection of reduction gears (203), and the output of reduction gears (203) drives the blind flange synchronous revolution, and brake disc (207) and blind flange coaxial setting and both fixed connection, the stopper can be used in on brake disc (207). The braking mechanism (201) has the advantages of compact structure, high strength and small occupied space.

Description

Brake mechanism for driving and braking hub motor and hub motor

Technical Field

The utility model relates to an in-wheel motor field has especially related to a drive brake in-wheel motor's arrestment mechanism and in-wheel motor.

Background

With the development of new energy automobile technology, hybrid and electric automobiles have more and more driving schemes. Common mixed, pure electric vehicles in market mainly change the engine into the motor or increase motor, battery, and power transmission device forms such as gearbox, transmission shaft still remain, and traditional motorcycle type relatively, whole car weight does not reduce, and technical complexity promotes. The aim of improving the driving mileage of the electric automobile is always pursued by the electric automobile, and the important implementation mode of the aim is to reduce the quality of the automobile and simplify the transmission structure.

Chinese patent CN201410698686.6GO discloses an integrated in-wheel motor driving unit, which is applied to a wheel through a two-stage planetary reduction mechanism, and omits traditional automobile components such as a transmission and a transmission shaft through a highly integrated structural design, thereby greatly reducing the overall automobile mass and improving the transmission efficiency, and the reduced weight can be used for greatly improving the capacity of a storage battery. But the drive among the prior art brakies integration in-wheel motor is only simply become overall structure with brake disc and in-wheel motor body design, and the installation of stopper still need be with the help of other structures, and the wholeness is relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is big to current in-wheel motor arrestment mechanism occupation space, the poor shortcoming of wholeness, provide a drive brake in-wheel motor's arrestment mechanism and in-wheel motor.

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

a brake mechanism for driving and braking a hub motor comprises a driving mechanism and a brake mechanism driven by the driving mechanism, wherein the driving mechanism comprises a motor driving body and a speed reducing mechanism connected to one side of the driving body and driven by the motor body; the middle part of base is provided with first bearing, and reduction gears's output and first bearing inner circle are connected, still include the blind flange of outer end, blind flange and reduction gears's output fixed connection, and reduction gears's output drives the blind flange synchronous rotation, and the brake disc can be used in on the brake disc with coaxial setting of blind flange and both fixed connection. The brake is creatively used as the sealing cover of the speed reducing mechanism, meanwhile, the brake can be matched with the brake disc through structural design to realize real driving and braking integration, and the size of the whole hub motor is smaller.

Preferably, the base comprises a bottom plate and a brake body, the upper edge of the bottom plate extends to form a protrusion, third mounting holes are formed in the bottom plate and the edge of the brake body, and the bolt is fixedly connected with the driving mechanism shell through the third mounting holes; the stopper body includes the upper piston jar in the outside and the lower piston jar of inboard, all is provided with a plurality of pistons of equivalent in upper piston jar and the lower piston jar, for the braking district of installation brake disc between upper piston jar and the lower piston jar.

As preferred, the middle part of base is first mount pad, and the through-hole has been seted up to the intermediate position of first mount pad, and first bearing assembly is in first mount pad, and the blind flange includes flange body and apron, and the flange body includes first disk body and the first cover body, and reduction gears's output includes the connecting axle, the first cover body and connecting axle fixed connection.

Preferably, the first sleeve body and the transmission shaft matching structure are in spline matching; the end part of the connecting shaft is positioned at the inner side of the first sleeve body, the outer side surface of the end part of the connecting shaft is provided with an external thread, the connecting sleeve further comprises a first fixing nut, and the first fixing nut is in threaded connection with the end part of the connecting shaft and acts on the first sleeve body.

Preferably, the inner wall of the outer end of the first sleeve body is provided with a first step and further comprises a gasket, the gasket is mounted on the first step and sleeved on the connecting shaft, and the first fixing nut is located on the outer side of the gasket and acts on the gasket to enable the gasket to abut against the end face of the first step.

Preferably, the first disk body is provided with an opening for sleeving the connecting shaft, and the cover plate is used for sealing and covering the opening of the first cover body and is fixedly connected with the first disk body through a bolt.

Preferably, the brake disc comprises a brake disc body and a second sleeve body arranged in the middle, the second sleeve body is positioned on the inner side of the first disc body, the second sleeve body is sleeved outside the first mounting seat, second fixing holes are formed in the outer end face of the second sleeve body along the circumferential direction of the second sleeve body, third fixing holes corresponding to the second fixing holes in a one-to-one mode are formed in the first disc body, and the first disc body and the second sleeve body are fixedly connected through the second fixing holes and the third fixing holes by bolts; the first tray body, the first sleeve body, the second tray body, the second sleeve body, the first connecting shaft and the first mounting seat are arranged coaxially.

Preferably, the outer side surface of the flange is provided with wheel bolts extending outwards; the shell of the brake is integrally arc-shaped.

Preferably, the number of pistons in the upper piston cylinder and the lower piston cylinder is equal to or not less than three.

The utility model also provides an in-wheel motor, including foretell a brake wheel hub motor's arrestment mechanism of driving, reduction gears is planet reduction gears.

The utility model discloses an in-wheel motor's arrestment mechanism has reached lightweight purpose with stopper casing and base integrated into one piece design, and the not unidimensional stopper of brake casing structural strength that moreover this kind of structure can design according to actual need greatly. And the space that the integrated design had reduced in-wheel motor's occupation has, and in addition in-wheel motor's axial dimension and radial dimension diminish, compact structure wholeness is good.

Drawings

Fig. 1 is a cross-sectional view of an in-wheel motor drive mechanism.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is an exploded schematic view of a silicon steel sleeve and permanent magnet assembly.

Fig. 4 is a sectional view of the in-wheel motor.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6 is a partially enlarged view of fig. 4.

The names of the parts indicated by the numerical references in the drawings are as follows: 200-driving mechanism, 201-braking mechanism, 202-driving body, 203-speed reducing mechanism, 204-base, 205-first bearing, 206-flange, 207-brake disc, 208-bottom plate, 209-brake body, 210-upper piston cylinder, 211-lower piston cylinder, 212-first mounting seat, 213-flange body, 214-cover plate, 215-first disc body, 216-first sleeve body, 217-connecting shaft, 218-first fixing nut, 219-first step, 220-gasket, 221-second sleeve body, 222-brake disc body, 224-wheel bolt

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A brake mechanism for driving a brake hub motor comprises a driving mechanism 200 and a brake mechanism 201 driven by the driving mechanism 200, wherein the driving mechanism 200 and the brake mechanism 201 in the embodiment are of an integral structure. The driving mechanism 200 comprises a motor driving body 202 and a speed reducing mechanism 203 which is connected to one side of the driving body 202 and driven by the motor body, wherein the braking mechanism 201 is connected to one end of the speed reducing mechanism 203, and the specific braking mechanism 201 is connected to the output end of the speed reducing mechanism 203. The speed reducing mechanism 203 in this embodiment is a planetary speed reducing mechanism 203, the output end of the speed reducing mechanism 203 is a planetary carrier, the braking mechanism 201 includes a base 204, and the base 204 and the casing of the speed reducing mechanism 203 are fixedly connected through bolts. The brake is mounted on the base 204, and in this embodiment, the brake housing and the base 204 are integrally formed. The shell and the base 204 of the brake are of an integrally formed structure, so that the brake is more convenient to process, higher in strength and capable of bearing larger torque.

The middle of the base 204 is provided with a first bearing 205, and the first bearing 205 plays a role of supporting the planet carrier and the brake disc 207, and a role of supporting the planet carrier and the brake disc 207 to rotate. The output end of the specific speed reducing mechanism 203 is connected with the inner ring of the first bearing 205 and is inserted into the inner ring of the first bearing 205, the braking mechanism 201 further comprises a flange cover at the outer end, the flange cover is fixedly connected with the output end of the speed reducing mechanism 203, the output end of the speed reducing mechanism 203 drives the flange cover to synchronously rotate, the braking disc 207 and the flange cover are coaxially arranged and fixedly connected, and the brake can act on the braking disc 207. The brake is creatively used as the sealing cover of the speed reducing mechanism 203, meanwhile, the brake can be matched with the brake disc 207 through structural design to realize real driving and braking integration, and the size of the whole hub motor is smaller.

In this embodiment, the base 204 includes a bottom plate 208 and a stopper body 209 protruding from the upper edge of the bottom plate 208, the bottom plate 208 and the stopper body 209 are provided with third mounting holes at their edges, and bolts are fixedly connected to the housing of the driving mechanism 200 and the speed reducing mechanism 203 through the third mounting holes; the brake body 209 comprises an outer upper piston cylinder 210 and an inner lower piston cylinder 211, wherein a plurality of pistons are arranged in the upper piston cylinder 210 and the lower piston cylinder 211, the number of the pistons is equal to that of the pistons, a brake area for installing the brake disc 207 is arranged between the upper piston cylinder 210 and the lower piston cylinder 211, the number of the pistons in each piston cylinder is 5 in the embodiment, and the extending directions of the piston cylinders are distributed.

For further description of the connection structure of the speed reducing mechanism 203 and the base 204, the base 204 is further described below:

the middle part of base 204 is first mount pad 212, first mount pad 212 is the bearing frame the same with the stopper direction of protrusion, the pattern of bearing frame has seted up the through-hole for the intermediate position, first bearing 205 assembles in first mount pad 212, the flange lid includes flange body 213 and apron 214, flange body 213 includes first disk body 215 and first set of body 216, reduction gears '203 output includes connecting axle 217, first set of body 216 and connecting axle 217 fixed connection, reduction gears' 203's output is the planet carrier in this embodiment, connecting axle 217 is the outside convex shaft member in planet carrier middle part, connecting axle 217 drives brake disc 207 rotatory as reduction gears's 203 output.

In order to ensure the stable fit between the first sleeve 216 and the transmission shaft, the first sleeve 216 and the transmission shaft fit structure are in spline fit; the end part of the connecting shaft 217 is positioned on the inner side of the first sleeve body 216, the outer side surface of the end part of the connecting shaft 217 is provided with an external thread, the device further comprises a first fixing nut 218, and the first fixing nut 218 is in threaded connection with the end part of the connecting shaft 217 and acts on the first sleeve body 216, so that a rotating gap and a sliding gap cannot occur between the first sleeve body 216 and a transmission shaft, and the transmission is more stable and reliable.

In order to prevent the first fixing nut 218 from slipping after long-time operation, the inner wall of the outer end of the first sleeve body 216 is provided with a first step 219 and a gasket 220, the gasket 220 is mounted on the first step 219 and sleeved on the connecting shaft 217, and the first fixing nut 218 is located at the outer side of the gasket 220 and acts on the gasket 220 to enable the gasket 220 to abut against the end face of the first step 219.

In this embodiment, the first tray 215 is provided with an opening for receiving the connecting shaft 217, and the cover plate 214 covers the opening of the first cover body in a sealing manner and is fixedly connected to the first tray 215 through a bolt.

The brake disc 207 of the embodiment in this market comprises a brake disc body 222 and a second sleeve body 221 arranged in the middle, the second sleeve body 221 is located on the inner side of the first disc body 215, the second sleeve body 221 is sleeved outside the first mounting seat 212, a second fixing hole is formed in the outer end face of the second sleeve body 221 along the circumferential direction of the second sleeve body, third fixing holes corresponding to the second fixing holes in a one-to-one mode are formed in the first disc body 215, and bolts fixedly connect the first disc body 215 and the second sleeve body 221 through the second fixing holes and the third fixing holes; the first disc 215, the first sleeve 216, the second disc, the second sleeve 221, the first connecting shaft 217 and the first mounting seat 212 are coaxially arranged.

The outer side surface of the flange 206 is provided with wheel bolts 224 extending outwards; the shell of the brake is integrally arc-shaped.

In operation, the motor driving mechanism 200 drives the reduction mechanism 203 to operate, the planet carrier of the reduction mechanism 203 serves as an output end to drive the brake disc 207 to rotate, in this embodiment, the connecting shaft 217 of the planet carrier is fixedly connected with the flange 206, and the flange 206 is fixed with the wheel, so that the reduction mechanism 203 drives the wheel to rotate, the brake disc 207 is fixedly connected with the flange 206 and is located on the inner side of the flange, the brake disc 207 and the wheel rotate synchronously, and the brake is connected with the shell of the reduction mechanism 203, so that the brake disc does not rotate. During braking, the brake block of the brake is only required to be acted on the brake disc 207.

Example 2

This embodiment is different from embodiment 1 in that: a locking washer 220 is also arranged between the washer 220 and the first nut.

Example 3

The present embodiment discloses an in-wheel motor including the brake mechanism 201 of the above embodiment.

Example 4

The difference from the embodiment 1 is that: the hub motor comprises a driving mechanism 200 and a braking mechanism 201 driven by the driving mechanism 200, and the driving mechanism 200 and the braking mechanism 201 are connected and driven by a speed reducing mechanism 300; the driving structure comprises a driving shell 100, a rear end cover 101 of the motor is arranged at the right end of the driving shell 100, and the rear end cover 101 is detachably connected with the driving shell 100; the motor is internally provided with a stator assembly 102 and a rotor assembly 103, the rotor assembly 103 is positioned on the inner side of the stator assembly 102 and is coaxially arranged with the stator assembly 102, the motor further comprises a transmission shaft 107 and a hub bearing 180 for supporting the transmission shaft 107, one end of the transmission shaft 107 close to the rear end cover 101 is connected with the rear end cover 101 through a bearing, the left end of the driving machine shell 100 is provided with a front end cover 108, and the other end of the transmission shaft 107 is connected with the bearing arranged on the front end cover 108; the rotor assembly 103 is fixedly connected to the middle part of the transmission shaft 107; the speed reducing mechanism 300 comprises a speed reducing machine shell 301 and a planetary speed reducing mechanism arranged in the speed reducing machine shell 301, wherein the left end of the transmission shaft 107 extends out of the front end cover 108, extends into the speed reducing machine shell 301 and is connected with a sun gear 302 of the planetary speed reducing mechanism to drive the planetary speed reducing mechanism to move; the output end of the planetary speed reducing mechanism is connected with the braking mechanism 201 and drives the brake disc 207 of the braking mechanism 201 to synchronously rotate, the speed reducing machine shell 301 is connected with the driving machine shell 100, the braking mechanism 201 comprises a brake, the brake is installed at the output end of the speed reducing machine shell 203, the braking mechanism 201 comprises a base 204, the brake is located on the base 204, and the base 204 covers the output end of the speed reducing mechanism 201 and is fixedly connected with the speed reducing shell 301.

The speed reducing mechanism 300 comprises a sun gear 302 fixedly connected with the transmission shaft 107, the speed reducing mechanism 300 comprises a planet carrier 304, a mounting shaft 306 is connected to the planet carrier 304, a planetary gear 303 is connected to the mounting shaft 306 through a bearing, the sun gear 302 and the planetary gear 303 are meshed for transmission to drive the planet carrier 304 to rotate, the speed reducing mechanism 300 further comprises a gear ring 305 mounted on the inner wall of the speed reducing casing 301, and the planetary gear 303 and the gear ring 305 are meshed; the connecting shaft 217 and the transmission shaft 107 are coaxially arranged, and the connecting shaft 217 drives the brake disc 207 to synchronously rotate.

In this embodiment, the planetary gear 303 is disposed around the sun gear 302, the inner side is engaged with the sun gear 302, the outer side is engaged with the ring gear 305 and rotates along the ring gear 305, wherein the mounting shaft 306 is mounted on the planet carrier 304 through a fixing member, the planet carrier 304 comprises a disk-shaped mounting frame 310 and a connecting shaft 217 disposed on one side of the braking mechanism 200, in this embodiment, the mounting frame 310 and the connecting shaft 217 are of an integrally formed structure, the mounting frame 310 is provided with a mounting groove 311 on a side opposite to the connecting shaft 217, wherein one end of the transmission shaft 107 located at the speed reducing mechanism 300 extends into the mounting groove 311 and is provided with an external thread at an end thereof, the end thereof is provided with a gasket and a locking cap 312 for locking the gasket, the locking cap 312 is in threaded fit with the external thread of the transmission shaft 107, and the locking cap is located in the mounting groove 311. The tip of sun gear 302 and transmission shaft 107 of this embodiment is the spline structural cooperation, and the lateral surface of the output of transmission shaft 107 is provided with spline structure promptly, and the medial surface in sun gear hole is provided with the tooth's socket structure of joining in marriage with spline structure to be convenient for install sun gear 302, can prevent moreover that sun gear 302 from taking place to slide, guarantee driven stability.

The speed reducing mechanism 203 in this embodiment is a planetary speed reducing mechanism 203, the output end of the speed reducing mechanism 203 is a planetary carrier, the braking mechanism 201 includes a base 204, and the base 204 and the casing of the speed reducing mechanism 203 are fixedly connected through bolts. The brake is mounted on the base 204, and in this embodiment, the brake housing and the base 204 are integrally formed. The shell and the base 204 of the brake are of an integrally formed structure, so that the brake is more convenient to process, higher in strength and capable of bearing larger torque.

To facilitate an understanding of the present solution, the driving mechanism of the present solution is described in detail below:

the driving mechanism comprises a driving shell 100, the driving shell 100 is an annular member with a through left end and a through right end, a rear end cover 101 of the motor is installed at the right end of the driving shell 100, and the rear end cover 101 is fixedly connected with the driving shell 100 through bolts. The motor rear end cover 101 is detachably connected with the rear end of the motor; a stator assembly 102 is mounted within the electric machine, the stator assembly 102 including conventional stator coils and stator cores. A rotor assembly 103 is sleeved inside the stator assembly 102, and the rotor assembly 103 comprises a permanent magnet assembly 104, a silicon steel sleeve 105 for supporting the permanent magnet assembly 104 and a rotor hub assembly 106 which are sequentially arranged from outside to inside; the driving mechanism further comprises a transmission shaft 107 and a hub bearing for supporting the transmission shaft 107, one end of the transmission shaft 107 close to the rear end cover 101 is connected with the rear end cover 101 through the bearing, a front end cover 108 is arranged at the left end of the driving machine shell 100, and the other end of the transmission shaft 107 is connected with the bearing arranged on the front end cover 108; the rotor assembly 103 is fixedly connected to the middle of the drive shaft 107. The outside and the permanent magnet subassembly 104 fixed connection of silicon steel sleeve 105 in this embodiment, the inboard and the rotor hub subassembly 106 interference fit of silicon steel sleeve 105, the drive shaft in this embodiment plays the function of supporting rotor subassembly 103, plays the effect that drives subsequent reduction gears work simultaneously, and wherein front end housing 108 and drive casing 100 body pass through bolt fixed connection.

In order to facilitate the production of the rotor and reduce the mass of the rotor, the rotor assembly 103 includes a front rotor hub 109 at the left end and a rear rotor hub 110 at the right end, connecting discs 111 are respectively disposed at the opposite ends of the front rotor hub 109 and the rear rotor hub 110, and the connecting discs 111 are sleeved on the transmission shaft 107 and fixedly connected with the transmission shaft 107. The combined rotor hub has the characteristic of light weight, the connecting disc 111 plays a role in connection and reinforcement, meanwhile, the inner side of the rotor hub with the structure is provided with a large enough space for placing a bearing seat, and the rotor and the stator with the structure are equal in length, so that the generated torque is larger.

In order to facilitate the fixation of the rotor hub and the transmission shaft 107, the transmission shaft 107 is provided with a coaxial mounting boss 112, so that the mounting boss 112 and the transmission shaft 107 form a stepped shaft. The middle of the connecting disc 111 is provided with a mounting hole 113, the connecting disc 111 is provided with a fixing hole, the side surface of the mounting boss 112 close to the connecting disc 111 is provided with a first mounting hole 114, a bolt sequentially penetrates through the fixing hole of the connecting disc 111 of the rear rotor hub 110 and the fixing hole of the connecting disc 111 of the front rotor hub 109 to be in threaded connection with a threaded hole, and in order to ensure the connection reliability of the rotor hub and the transmission shaft 107, the threaded holes in the mounting boss 112 are uniformly arranged along the circumferential direction of the transmission shaft 107. Therefore, the rotor hub is ensured to rotate more stably when rotating.

In order to describe how the connecting disc 111 is installed in more detail, the right end of the installation boss 112 is a stepped shaft, which comprises a thick shaft 115 and a thin shaft 116; the axial dimension of thin shaft 116 equals to the sum of the thickness of connecting disc 111 of front rotor hub 109 and the thickness of connecting disc 111 of rear rotor hub 110, two connecting discs are assembled on thin shaft 116, first mounting hole 114 of mounting boss 112 is opened on the end face of thick shaft 115, in order to ensure the stability of connecting disc 111 position, transmission shaft 107 is assembled with limit snap ring, and the limit snap ring is clamped on the end face of rear rotor hub 110.

In order to ensure the accurate assembly of the permanent magnet assembly and the silicon steel sleeve 105, in the embodiment, the outer side surface of the silicon steel sleeve 105 is provided with tooth sockets 117 extending along the axis direction of the silicon steel sleeve, and the tooth sockets 117 are uniformly distributed along the circumferential direction of the outer side surface of the silicon steel sleeve 105; the inner side surface of the permanent magnet assembly 104 is provided with connecting teeth which are in one-to-one correspondence with the tooth grooves 117, and the permanent magnet assembly 104 is fixedly connected with the silicon steel sleeve 105. The inner ring of the silicon steel sleeve 105 is in interference fit with the outer ring of the rotor hub.

In this embodiment, a mounting seat 118 extends from the inner side of the front end cover 108, a bearing for supporting the transmission shaft 107 is disposed in the mounting seat 118, and the transmission shaft 107 is connected to the bearing in the mounting seat 118. The mounting base 118 extends to the outside of the mounting boss 112 in this embodiment, a sealing ring is arranged between the mounting base 118 and the mounting boss 112, the structural design can ensure that the supporting bearing at the left end has enough size, the mounting base 118 is matched with the boss, the assembling surface is larger, the reliability is higher, and the mounting base 118 extends to the middle of the transmission shaft 107. The transmission shaft 107 can be better supported, and the transmission stability of the transmission shaft 107 in the rotating process is ensured.

The inner wall of the driving housing 100 is provided with a supporting groove 120 along the circumferential direction, the inner wall of the rear end cover 101 and the inner wall of the front end cover 108 are provided with limiting grooves 121, the stator assembly 102 comprises an inner annular body 122, a convex ring 123 extends from the outer circumferential side of the annular body 122, the convex ring 123 abuts against the supporting groove 120, the left end of the annular body 122 is seated in the limiting groove 121 of the front end cover 108, the right end of the annular body 122 is seated in the limiting groove 121 of the rear end cover 101, and the front end cover 108 is a support of the speed reducer.

The utility model discloses an in-wheel motor's actuating mechanism, the rotor subassembly 103 of at first designing is the same with stator module 102 length, has guaranteed the efficiency of cutting magnetism line of feeling, and the inside of rotor subassembly 103 is provided with into hollow structure simultaneously. So greatly reduced actuating mechanism's whole quality, the rotor adopts split type design simultaneously, and split type design's advantage lies in the production of being convenient for, can adapt to the in-wheel motor of big specification moreover, and it is also more convenient to install moreover, and more lightweight moreover, the radiating efficiency is also higher. The permanent magnet subassembly that designs simultaneously, rotor subassembly 103 and silicon steel sleeve 105's connection structure is also more reasonable, and silicon steel sleeve 105 and permanent magnet subassembly have also guaranteed the reliability that permanent magnet and silicon steel sleeve 105 are connected for the spline structure assembly greatly.

And this kind of design also provides the possibility for in-wheel motor drive arrangement's axial dimensions shortens, and the mount pad 118 of design sets up the inboard extension in the rotor at in-wheel motor, and is connected with installation boss 112 moreover and has increased area of contact, guarantees the stationarity of rotation.

Claims

1. The utility model provides a brake mechanism of drive brake in-wheel motor, includes actuating mechanism (200) and by actuating mechanism (200) driven brake mechanism (201), its characterized in that: the driving mechanism (200) comprises a motor driving body (202) and a speed reducing mechanism (203) which is connected to one side of the driving body (202) and driven by the motor body, the braking mechanism (201) is connected to one end of the speed reducing mechanism (203), the braking mechanism (201) comprises a base (204), the base (204) is fixedly connected with a shell of the speed reducing mechanism (203), a brake is installed on the base (204), and a shell of the brake and the base (204) are of an integrally formed structure; the middle part of base (204) is provided with first bearing (205), and the output and the first bearing (205) inner circle of reduction gears (203) are connected, still include the blind flange of outer end, the blind flange and the output fixed connection of reduction gears (203), and the output of reduction gears (203) drives the blind flange synchronous revolution, and brake disc (207) and blind flange coaxial setting and both fixed connection, the stopper can be used in on brake disc (207).

2. A brake mechanism for driving a brake hub motor according to claim 1, wherein: the base (204) comprises a bottom plate (208) and a brake body (209) with a convex extending edge on the bottom plate (208), the brake body (209) comprises an upper piston cylinder (210) on the outer side and a lower piston cylinder (211) on the inner side, a plurality of pistons with the same quantity are arranged in the upper piston cylinder (210) and the lower piston cylinder (211), and a brake area for installing a brake disc (207) is arranged between the upper piston cylinder (210) and the lower piston cylinder (211).

3. A brake mechanism for driving a brake hub motor according to claim 1, wherein: the middle part of base (204) is first mount pad (212), the through-hole has been seted up to the intermediate position of first mount pad (212), first bearing (205) assembly is in first mount pad (212), the flange lid includes flange body (213) and apron (214), flange body (213) include first disk body (215) and first cover body (216), the output of reduction gears (203) includes connecting axle (217), first cover body (216) and connecting axle (217) fixed connection.

4. A brake mechanism for driving a brake hub motor according to claim 2, wherein: the first sleeve body (216) is in spline fit with the transmission shaft matching structure; the end part of the connecting shaft (217) is positioned on the inner side of the first sleeve body (216), the outer side surface of the end part of the connecting shaft (217) is provided with an external thread, the connecting sleeve further comprises a first fixing nut (218), and the first fixing nut (218) is in threaded connection with the end part of the connecting shaft (217) and acts on the first sleeve body (216).

5. The brake mechanism of claim 4, wherein the brake mechanism comprises: the inner wall of the outer end of the first sleeve body (216) is provided with a first step (219) and further comprises a gasket (220), the gasket (220) is installed on the first step (219) and sleeved on the connecting shaft (217), and the first fixing nut (218) is located on the outer side of the gasket (220) and acts on the gasket (220) to enable the gasket (220) to abut against the end face of the first step (219).

6. A brake mechanism for driving a brake hub motor according to claim 3, 4 or 5, wherein: an opening used for sleeving the connecting shaft (217) is formed in the first tray body (215), and the cover plate (214) covers the opening of the first cover body in a sealing mode and is fixedly connected with the first tray body (215) through bolts.

7. A brake mechanism for driving a brake hub motor according to claim 3, wherein: the brake disc (207) comprises a brake disc body (222) and a second sleeve body (221) arranged in the middle, the second sleeve body (221) is located on the inner side of the first disc body (215), the second sleeve body (221) is sleeved on the outer portion of the first mounting seat (212), second fixing holes are formed in the outer end face of the second sleeve body (221) along the circumferential direction of the second sleeve body, third fixing holes corresponding to the second fixing holes in a one-to-one mode are formed in the first disc body (215), and the first disc body (215) and the second sleeve body (221) are fixedly connected through bolts through the second fixing holes and the third fixing holes; the first disc body (215), the first sleeve body (216), the second disc body, the second sleeve body (221), the first connecting shaft (217) and the first mounting seat (212) are coaxially arranged.

8. A brake mechanism for driving a brake hub motor according to claim 1, wherein: the outer side surface of the flange plate (206) is provided with wheel bolts (224) extending outwards; the shell of the brake is integrally arc-shaped.

9. A brake mechanism for driving a brake hub motor according to claim 2, wherein: the number of the pistons in the upper piston cylinder (210) body and the lower piston cylinder (211) body is equal and not less than three.

10. In-wheel motor, its characterized in that: a brake mechanism comprising a brake hub motor according to any one of claims 1 to 9, the reduction mechanism (203) being a planetary reduction mechanism (203).