CN211892825U

CN211892825U - Connecting structure of brake, steering knuckle and hub motor

Info

Publication number: CN211892825U
Application number: CN201922335918.2U
Authority: CN
Inventors: 耿传亮; 马志敏; 黄梅仙; 董胜男
Original assignee: Zhejiang VIE Science and Technology Co Ltd
Current assignee: Zhejiang VIE Science and Technology Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-11-10
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to a power wheel field discloses connection structure of stopper, knuckle and in-wheel motor, including in-wheel motor (100), stopper (104) and knuckle (200), install brake disc (103) on rotor (102), the terminal surface of stator one end is installation face (105), and stopper (104) and knuckle (200) are installed on installation face (105). The utility model discloses creative adoption in-wheel motor, knuckle and stopper integrate the design, have practiced thrift the assembly process and the assembly cost of electronic round greatly, should integrate the design moreover and can be stable, reliable driving braking action. Meanwhile, due to the integrated design, the space in the electric wheel and the rim is greatly saved, and the integrated action of starting and braking is realized.

Description

Connecting structure of brake, steering knuckle and hub motor

Technical Field

The utility model relates to an electronic round of field has especially related to stopper, knuckle and in-wheel motor's connection structure.

Background

The existing in-wheel motor is generally arranged in a rim during design, and then a brake disc and a brake are arranged on a vehicle body or a wheel so as to realize a braking function.

Chinese patent CN201710537261.0 provides a hub motor with a pillar, in the application of the present invention, heat dissipation performance of the present invention can be greatly improved by arranging heat dissipation fins on a housing and forming a coolant circulation channel by using an outer end cap, a side wall and an inner end cap; furthermore, a pore channel is processed in an iron core of the stator, a cooling pipeline is installed in the pore channel and used for allowing cooling liquid to pass through and taking away heat, the reliability of the hub motor is improved, the environmental adaptability of the hub motor is improved, and meanwhile, the brake disc is installed on the hub motor.

However, the hub motor with the brake disc has the following defects in the selling process, and the assembly of the hub motor and the assembly of the wheel belong to two different systems, namely a part manufacturer processing system and an automobile or wheel assembly system, so that the transportation and assembly cost is high, a special production line needs to be matched with an automobile enterprise, the whole assembly cost is high, and the universality is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the assembly difficulty that current in-wheel motor exists, manufacturing cost is high, with the stopper matching nature poor and the knuckle subassembly need assemble in wheel equipment field, increases shortcomings such as assembly cost, provides stopper, knuckle and in-wheel motor's connection structure.

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

the brake, the knuckle and the connection structure of the hub motor comprise the hub motor and the brake, wherein the hub motor comprises a stator and a rotor driving a wheel to rotate, a brake disc is installed on the rotor, the hub motor is an outer rotor motor, one end of the rotor is in an open shape, an inner cavity is formed in the middle of the rotor, the stator is assembled in the inner cavity, a permanent magnet is installed on the side surface of the inner cavity, a coil is arranged on the stator, the hub motor further comprises a hub bearing, the stator is connected with the hub bearing, the rotor is also connected with the hub bearing, one end of the hub bearing is used for being connected with a frame, the other end of the hub bearing is used for being connected with the wheel, the rotor drives; the axial size of the stator is smaller than that of the rotor, one side, close to the vehicle body, of the stator is defined as the inner side when the stator is installed, the inner end face of the stator is located inside the inner cavity, the inner end face of the stator is defined as an installation face, an assembly space is formed among the installation face, the inner side end face of the rotor and the side face of the inner cavity, the brake is directly or indirectly installed on the installation face, and the brake disc is installed on the inner side end face of the; the brake disc passes through the jaws of a brake, which can act on the brake disc. The utility model discloses an integrated structure can realize the design that integrates of spare part at spare part manufacturing end, mainly integrates the design with stopper, brake disc and in-wheel motor, so when carrying out wheel or whole car equipment, only need with integrated stopper and in-wheel motor direct assembly can, the assembly system that does not need design alone assembly stopper and knuckle has practiced thrift assembly cost greatly, the assembly is simpler moreover, the solution cost, assembly efficiency is higher.

Preferably, the brake further comprises a steering knuckle, a fixing hole is formed in the mounting surface of the stator, the steering knuckle is fixedly mounted on the stator through the fixing hole, and the brake is fixedly mounted on the stator or fixedly mounted on the steering knuckle.

Preferably, the brake is fixedly mounted on the knuckle, a mounting portion connected with the brake is formed on the knuckle, and the brake is mounted on the mounting portion.

Preferably, the brake disc is annular, at least part of the brake disc extends into the inner cavity, and the brake is mounted on the mounting surface and positioned on the inner side of the brake disc; be provided with the mount pad on the stator, seted up first mounting hole on the mount pad, the stopper passes through the stopper connecting piece and fixes the stopper on the stator with the cooperation of first mounting hole.

Preferably, the stator is provided with a mounting seat, the mounting seat is provided with a first mounting hole, and the brake is fixed on the stator through the matching of the brake connecting piece and the first mounting hole.

Preferably, a detachable structure is arranged between the mounting seat and the stator, a second mounting hole is formed in the mounting seat, the mounting seat connecting piece penetrates through the second mounting hole to fix the mounting seat on the stator, a third mounting hole matched with the second mounting hole is formed in the stator, a mounting lug is fixed on a caliper body of the brake, and the mounting lug is fixedly mounted on the mounting seat through the connecting piece.

Preferably, the mounting seat comprises a first connecting piece fixed with the end face of the stator and a second connecting piece mounted with the brake, one side of the second mounting hole close to the second connecting piece is provided with a mounting space, and the mounting space provides an operation space for the second connecting piece to be inserted into the second mounting hole.

Preferably, the length of the second connecting member is smaller than the length of the first connecting member.

Preferably, the brake caliper body is fixed with a mounting lug, the mounting lug is provided with a through hole matched with the stator, and the mounting lug is fixedly connected with the stator through a bolt.

Preferably, the stator is internally provided with a cooling water channel, and an inlet and an outlet of the cooling water channel are arranged on the outer end face of the stator.

Preferably, the brake comprises a brake caliper body, the brake caliper body comprises an upper caliper body and a lower caliper body, a jaw is formed between the upper caliper body and the lower caliper body, the brake disc is installed in the jaw, the brake disc penetrates through the jaw, the shape of the jaw is matched with that of the brake disc, the upper caliper body and the lower caliper body are of an integrally formed structure or a detachable structure, the upper caliper body and the lower caliper body are fixedly connected through fixing bolts, and the number of the fixing bolts is not less than two.

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

the utility model discloses creative adoption in-wheel motor, stopper and knuckle design of integrating has practiced thrift the assembly process and the assembly cost of electronic round greatly, should integrate the design moreover and can be stable, reliable driving braking action. Meanwhile, the brake and the hub motor are designed in an integrated mode, the space in the electric wheel and the rim is greatly saved, and the integrated action of starting and braking can be achieved without structural design on the rim.

The brake and the steering knuckle are directly and fixedly arranged on a part stator in the hub motor; the brake, the steering knuckle and the motor assembly are a complete integrated component; the hub motor is integrated with the brake and the steering knuckle, so that the product can realize driving, braking and installation of the steering knuckle; the hub motor provides strong driving force through a motor structure, so that the automobile has strong power; the mechanical braking structure can provide strong braking force, so that the automobile can be safely and stably braked under any condition; the hub motor and the brake are integrated together, so that the product structure is simplified, and parts or assemblies such as an engine, a gearbox, a transmission shaft, a connector and the like of a traditional vehicle type are replaced; the whole equipment is lighter in weight, and the cost of the whole vehicle is greatly reduced; the brake assembly integrating driving and braking is omitted, so that the station for assembling the whole vehicle is omitted, and the cost of the whole vehicle is further reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the apparatus.

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is a schematic view of the structure of the stator core.

Fig. 4 is a sectional view of fig. 3.

Fig. 5 is a schematic perspective view of fig. 3.

Fig. 6 is a schematic view of the structure of the brake.

Fig. 7 is a schematic structural view of a stator core according to embodiment 2.

Fig. 8 is a schematic perspective view of the mount of embodiment 2.

Fig. 9 is a front view of fig. 8.

Fig. 10 is a schematic view of the structure of the hub bearing.

FIG. 11 is a schematic view of the stator structure of embodiment 5.

FIG. 12 is a schematic structural view of a knuckle according to embodiment 5.

The names of the parts indicated by the numerical references in the drawings are as follows: 100-hub motor, 101-stator, 102-rotor, 103-brake disc, 104-brake, 105-installation face, 106-first installation hole, 107-second installation hole, 108-third installation hole, 109-installation ear, 110-first connecting piece, 111-second connecting piece, 112-installation space, 113-supporting arm, 114-cooling water channel, 115-hub bearing, 116-disc body, 117-fixed connection ear, 118-inner cavity, 119-body, 120-spacing ring, 121-installation seat, 122-assembly space, 123-upper clamp body, 124-lower clamp body, 125-jaw, 126-coil, 127-permanent magnet, 200-knuckle, 201-fixed hole, 202-installation part, 203-base, 205-jack, 204-jack.

Detailed Description

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

Example 1

As shown in fig. 1 to 6, the connection structure of the brake, the knuckle and the in-wheel motor includes an in-wheel motor 100 and a brake 104, the in-wheel motor 100 includes a stator 101 and a rotor 102 driving a wheel to rotate, a brake disc 103 is mounted on the rotor 102, the in-wheel motor 100 is an outer rotor motor, one end of the rotor 102 is open, an inner cavity 118 is formed in the middle of the rotor 102, the stator 102 is assembled in the inner cavity 118, a permanent magnet 127 is mounted on a side surface of the inner cavity 118, a coil 126 is disposed on the stator 101, the in-wheel bearing 115 is further included, the stator 101 is connected with the in-wheel bearing 115, the rotor 102 is also connected with the in-wheel bearing 115, one end of the in-wheel bearing 115 is used for being connected with a frame, the other end of the in-wheel bearing 115 is used for; the axial dimension of the stator 101 is smaller than that of the rotor 102, and in the present embodiment the axial dimension of the stator 101 is mainly the dimension of a stator core, and the stator coils 128 are mounted on the circumferential side faces of the stator core. Defining that one side of the wheel hub mounting motor, which is close to a vehicle body when the wheel hub mounting motor is mounted, is an inner side, the inner end surface of the stator 101 is positioned in the inner cavity 118, the inner end surface of the stator 101 is defined as a mounting surface 105, an assembly space 122 is formed among the mounting surface 105, the inner end surface of the rotor 102 and the side surface of the inner cavity 118, the brake 104 is directly or indirectly mounted on the mounting surface 105, and the brake disc 103 is mounted on the inner end surface of the rotor 102; brake disc 103 passes through brake jaws 125 and brake 104 can act on brake disc 104. The brake 104 may be a front brake or a rear brake, and may also be a floating brake or a fixed brake.

In this embodiment, the hub motor 100 further includes a hub bearing 115, and the hub bearing 115 is a non-driving bearing; the hub bearing 115 is fixed to the vehicle body by bolts. The stator 101 is fixedly mounted on the hub bearing 115 through a fixing bolt and does not rotate synchronously with the wheel, the rotor 102 is fixedly mounted on the hub bearing 115 through a bolt, after the coil 126 of the hub motor 100 is electrified, the rotor 102 rotates under the electromagnetic action to drive the wheel to rotate synchronously, and the output shaft of the automobile is matched with the hub bearing.

A fixing hole 201 is formed in the mounting surface 105 of the stator 101, the knuckle 200 is fixedly mounted on the stator 101 through the fixing hole 201, and the brake 104 is fixedly mounted on the stator 101 or the knuckle 200. In the present embodiment, the brake 104 is directly mounted on the stator 101.

In order to ensure the reliable fixation of the knuckle 200 and the stator 101, the stator 101 needs to be assembled with the vehicle body, so the mounting surface 105 is provided with a socket 204, wherein the hub bearing 115 is in interference fit with the socket 204 to realize the fixed connection of the stator 101 and the hub bearing 115. The hub bearing 115 is provided with a jack 205 in the middle, the jack 205 is used for matching with a frame of a vehicle body, after the hub bearing 115 is assembled with the stator 101, the jack 205 is opened towards the mounting surface 105, and then a shaft on the frame is matched with the jack 205.

The number of the fixing holes 201 is not less than 3, and the fixing holes are uniformly distributed around the socket 204, so that the steering knuckle 200 and the stator 101 are firmly installed, and the stress of the steering knuckle 200 and the stator 101 is uniform as much as possible. In this embodiment, the number of the fixing holes 201 is 4, in this embodiment, the fixing holes 201 are threaded holes, and the knuckle 200 is provided with connecting holes corresponding to the fixing holes 201 one to one, which are not shown.

The utility model discloses an integrated structure can realize that spare part integrates the design at spare part manufacturing end, when carrying out wheel and whole car equipment, only need with integrated stopper 104, in-wheel motor 100 and knuckle 200 direct assembly can, do not influence original assembly system, simplified the process and the assembly cost of wheel assembly, the assembly is simpler moreover, assembly efficiency is higher.

Meanwhile, in the present embodiment, the brake disk 103 is annular, and the brake disk 103 is mounted on the inner end surface of the rotor 102 in a specific manner: a threaded hole, not shown, is provided on the inner end surface of the rotor 102, and the brake disk 103 is fixedly connected with the annular end surface of the rotor 102 through the threaded hole. In order to ensure the reliability of the connection between the brake disk 103 and the rotor 102 and the coaxiality of rotation, the axis of the brake disk 103 is arranged coaxially with the axis of the rotor 102. Meanwhile, in order to facilitate a reliable contact area between the brake disc 103 and the brake 104, the brake disc 103 includes an annular disc body 116, fixing lugs 117 extend from the outer edge of the disc body 116, the fixing lugs 117 are uniformly distributed along the outer ring of the disc body 116, and the fixing lugs 117 are fixedly connected with threaded holes on the inner side surface of the rotor 102, so that most of the disc body 116 or all of the disc body 116 of the brake disc 103 extend to an inner cavity 118 of the rotor 102, thereby providing a space for installation of the brake 104 and providing a reliable area for the contact between the brake pads and the brake disc. In this configuration, since the brake 104 and the knuckle 200 are both disposed inside the wheel, the safety of the brake 104 and the brake disc 103 is higher, and the brake is less likely to be disturbed by the external environment.

It is apparent that the stator 101 is disposed inside the rotor 102 and inside the cavity 118, and the brake 104 is mounted on the outer end surface of the stator 101 and inside the brake disc 103. The mounting surface 105 can serve as a fixed mounting for the brake 104, while the annular brake disc 103 used can form a mounting space 112 inside the brake disc 103, thereby ensuring that there is sufficient space for mounting the brake 104. The method specifically comprises the following steps: the stator 101 comprises a stator core, the stator core comprises a body 119 for winding a coil 126 and a limiting ring 120 arranged at the outer end of the body 119 and extending outwards along the side surface, the end surface at the inner side of the body 119 is used as a mounting surface 105, the mounting surface 105 is used for fixing the brake 104, and the brake 104 is positioned in the middle space area of the brake disc 103.

The stator 101 is provided with a mounting seat 121, the mounting seat 121 is provided with a first mounting hole 106, and the brake 104 is fixed on the stator 101 by the matching of the brake 104 connecting piece and the first mounting hole 106. Due to the structural characteristics of the existing brake 104, the dimension of the stator 101 of the in-wheel motor 100 along the axis is smaller than the dimension of the rotor 102 along the axis, so that a certain distance exists between the mounting surface 105 of the stator 101 and the inner end surface of the rotor 102, the mounting surface 105 of the stator 101, the inner end surface of the rotor 102 and the inner side surface of the rotor 102 enclose an assembly space 122, the brake 104 is mounted in the braking interval, and the brake disc 103 is arranged in a brake caliper opening enclosed by the upper friction block 132 and the lower friction block 132 of the brake 104.

Since the brake 104 includes the upper friction block 131 and the lower friction block 132, in order to ensure that the brake 104 is more stable and does not cause side load to the stator 101 and the rotor 102 when braking, the mounting lug 109 of the brake 104 is disposed in the middle of the caliper body of the brake 104 in the present embodiment, and the mounting lug 109 is disposed at the back of the caliper body of the brake 104 in a protruding manner, the thickness of the mounting lug 109 is equal to the distance between the upper friction block 131 and the lower friction block 132, and the thicker mounting lug 109 can ensure the mounting strength of the caliper body.

Therefore, when the brake 104 is installed, the installation lug 109 fixes the brake 104 on the installation seat 121 through the bolt assembly first installation hole 106, so that a part of the caliper body of the brake 104 is positioned on the outer side of the installation seat 121, and a part of the caliper body of the brake 104 is positioned on the inner side of the installation seat 121, the structure not only can ensure the stability of the braking process of the brake 104, but also can reduce the load of the brake 104 on the installation seat 121, so that the assembly precision between the brake 104 and the brake disc 103 is more accurate, the service lives of the brake 104 and the brake disc 103 are prolonged, and the damage to the hub motor 100 is reduced.

For force balance, the number of the mounting ears 109 and the first mounting holes 106 is two. It is obvious that the mounting lug 109 is provided with a through hole for matching with the first mounting hole 106, and the mounting lug 109 is fixedly connected with the stator 101 through a bolt.

In this embodiment the brake 104 comprises a caliper body comprising an upper caliper body 123 and a lower caliper body 124, an upper friction block 131 being mounted on the upper caliper body 123 and a lower friction block 132 being mounted on the lower caliper body 124. The upper caliper body 123 and the lower caliper body 124 form a jaw 125 therebetween, the brake disc 103 is installed in the jaw 125, the brake disc 103 passes through the jaw 125, and the shape of the jaw 125 matches the shape of the brake disc 103. This design ensures that the contact portion of the brake pad with the brake disc 103 is as close as possible to the outer edge, thereby reducing the vibration of the brake disc 103 caused by the suspension of the brake disc 103 in the rotor 102, because the conventional brake 104 is assembled with the brake disc 103, and the brake 104 is clamped at the outer portion of the brake disc 103, in which case the friction surface between the brake 104 and the brake disc 103 is generally concentrated at the inner side of the brake disc 103, but due to the special structure of the device, the brake 104 is arranged at the inner side of the brake disc 103, which saves space, and the whole structure is more integrated, but if the conventional brake 104 is used without slight modification, such as the conventional fixed one-piece caliper, the installation from the inner side of the brake disc cannot be realized due to the closed structure at the two ends of the caliper body, and for other brake calipers, in order to prevent the conventional brake, can not realize matcing with the brake disc, for example the brake caliper can not match with the inner circle of rotor, causes the jaw and can not well peg graft the deeper position of brake disc, leads to the contact surface of brake disc 103 to concentrate on the one side that brake disc 103 is close to the axis and makes brake disc 103 take place vibrations, causes great injury to brake disc 103. The arc-shaped jaws of the brake 104 of the present embodiment are adapted to the shape of the brake disc 103, so that the contact between the brake pad and the brake disc 103 can be as close as possible to the mounting lugs, thereby reducing the vibration of the brake disc 103 and the load of the mounting connection.

In the present embodiment, a cooling water channel 114 is disposed inside the stator 101, and an inlet 210 and an outlet 211 of the cooling water channel 114 are opened on the mounting surface 105 of the stator 101, so as to facilitate control and monitoring of the cooling water channel 114.

The utility model discloses creative adoption in-wheel motor 100, stopper 104 and knuckle 200 integrate the design, have practiced thrift the assembly process and the assembly cost of electronic round greatly, should integrate the design moreover and can be stable, reliable exercise braking action. Meanwhile, the brake 104, the in-wheel motor 100 and the steering knuckle 200 are designed in an integrated mode, so that the space in the electric wheel and the rim is greatly saved, and the integrated action of starting and braking can be realized without structural design of the rim. And meanwhile, the brake and the brake disc are arranged on one side close to the vehicle body, so that the safety is better, and the influence of external factors on the brake and the brake disc is reduced.

Example 2

As shown in fig. 7 to 9, different from embodiment 1, in order to simplify the manufacturing difficulty of the stator 101, a detachable structure is provided between the mounting seat 121 and the stator 101, in this case, the mounting seat 121 may be selected, heat treated or otherwise processed according to actual needs, so that the mounting seat 121 can meet the mounting requirements, and the stator 101 with such a structure has a lower production cost and universality. In this embodiment, the mounting seat 121 is provided with a second mounting hole 107, the mounting seat 121 is connected with the stator 101 through the second mounting hole 107 to fix the mounting seat 121 on the stator 101, and the stator 101 is provided with a third mounting hole 108 matched with the second mounting hole 107. The brake 104 has a clamp body with a mounting lug 109, the mounting lug 109 is fixedly mounted on a first mounting hole 106 of a mounting seat 121 via a connector, and the mounting lug 109 is provided with a connecting hole (not shown) matching with the first mounting hole 106.

In the present embodiment, the mounting seat 121 includes the first connector 110 for fixing with the end surface of the stator 101 and the second connector 111 for mounting with the stopper 104, so the second mounting hole 107 is opened on the first connector 110 and the first mounting hole 106 is mounted on the first connector 110. The side of the second mounting hole 107 adjacent to the second connector 111 has a mounting space 112, and the mounting space 112 provides an operation space for inserting the second connector 111 into the second mounting hole 107, because it is a bolt fixing connection, a space for bolt insertion and fixing should be reserved. It is apparent that the first link 110 and the second link 111 have the support arm 113 connected therebetween, and the first link 110, the second link 111, and the support arm 113 form the installation space 112 therebetween.

In order to make the structure simpler and lighter, the length of the second connecting member 111 is smaller than that of the first connecting member 110. The width of the supporting arm 113 is substantially equal to the length of the second connecting member 111 in this embodiment, and the supporting arm 113 can provide stable support for the mounting seat 121, thereby ensuring the stability of the mounting seat 121 and the brake 104 mounted on the mounting seat 121.

Example 3

This example is different from examples 1 and 2 in that: the brake 104 in this embodiment is a multi-piston type fixed brake 104, the fixed brake 104 can provide stable and reliable braking force, the present invention is designed to the conventional fixed brake 104, the brake 104 comprises a brake caliper body, the brake caliper body comprises an upper caliper body 123 and a lower caliper body 124, a jaw 125 is formed between the upper caliper body 123 and the lower caliper body 124, the brake disc 103 is installed in the jaw 125, the brake disc 103 passes through the jaw 125, the shape of the jaw 125 is matched with the shape of the brake disc 103, the upper caliper body 123 and the lower caliper body 124 are detachable, the structure is convenient for processing, the upper clamp body 123 and the lower clamp body 124 are fixedly connected through the fixing bolts, the number of the fixing bolts is not less than two, moreover, the design avoids the defect that the traditional fixed brake 104 cannot be installed from the inner side of the brake disc 103 or cannot realize large-area contact with the brake disc 103 after being installed.

Example 4

This embodiment is different from embodiment 1 in that: since the number of the stoppers 104 mounted on the stator 101 is two or more, the number of the corresponding mounting seats 121 is 2 or more.

Example 5

As shown in fig. 10 to 11, the present embodiment is different from embodiment 1 in that: the brake 104 is mounted on a knuckle 200, which is provided with a mounting portion 202 connected to the brake 104, and the brake 104 is mounted on the mounting portion. In the present embodiment, two mounting ears are extended from one side of the knuckle 200 to serve as the mounting portions 202, and the caliper body of the brake 104 is fixedly mounted on the knuckle 200 via a connecting member. Therefore, in the present embodiment, the stator 101 is not provided with the mount 121, and the mount 121 is replaced with the mount 202 provided on the knuckle 200. The knuckle 200 includes a base 203, a fixing hole 201 is formed in the base 203, a mounting portion 202 is integrally formed on a side portion of the base 203 and serves as a mounting seat 121, and a first mounting hole 106 is formed in the mounting portion 202. The mounting portion 202 is spaced from the bottom surface of the base 203 by a distance that is adapted to fit the lower caliper body of the caliper body.

Example 6

This embodiment is different from embodiment 1 in that: hub bearing 115 is a drive hub bearing.

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. Stopper, knuckle and in-wheel motor's connection structure, its characterized in that: comprises an in-wheel motor (100) and a brake (104), wherein the in-wheel motor (100) comprises a stator (101) and a rotor (102) driving wheels to rotate, a brake disc (103) is arranged on the rotor (102), the in-wheel motor (100) is an outer rotor motor, one end of the rotor (102) is open, an inner cavity (118) is formed in the middle of the rotor (102), the stator (101) is assembled in the inner cavity (118), the permanent magnet (127) is installed on the side face of the inner cavity (118), a coil (126) is arranged on the stator (101), the permanent magnet further comprises a hub bearing (115), the stator (101) is connected with the hub bearing (115), the rotor (102) is also connected with the hub bearing (115), one end of the hub bearing (115) is used for being connected with a frame, the other end of the hub bearing (115) is used for being connected with a wheel, the rotor (102) drives the wheel to rotate through the hub bearing (115), and the stator (101) is connected with a vehicle body through the hub bearing (115); the axial dimension of the stator (101) is smaller than that of the rotor (102), one side, close to a vehicle body, of the stator (101) is defined as an inner side when the stator is installed, the inner end face of the stator (101) is located inside the inner cavity (118), the inner end face of the stator (101) is defined as an installation face (105), an assembly space (122) is formed among the installation face (105), the inner end face of the rotor (102) and the side face of the inner cavity (118), the brake (104) is directly or indirectly installed on the installation face (105), and the brake disc (103) is installed on the inner end face of the rotor (102); the brake (104) can act on the brake disc (103).

2. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 1, wherein: the steering gear is characterized by further comprising a steering knuckle (200), a fixing hole (201) is formed in the mounting surface (105) of the stator (101), the steering knuckle (200) is fixedly mounted on the stator (101) through the fixing hole (201), and the brake (104) is fixedly mounted on the stator (101) or fixedly mounted on the steering knuckle (200).

3. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 2, wherein: the brake (104) is fixedly arranged on the steering knuckle (200), an installation part (202) connected with the brake (104) is arranged on the steering knuckle (200), and the brake (104) is arranged on the installation part (202).

4. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 1, wherein: the brake disc (103) is annular, the brake disc (103) extends into the inner cavity (118), and the brake (104) is mounted on the mounting surface (105) and located on the inner side of the brake disc (103); the mounting surface (105) is provided with a mounting seat (121), the mounting seat (121) is provided with a first mounting hole (106), and the brake (104) is matched with the first mounting hole (106) through a brake (104) connecting piece to fix the brake (104) on the stator (101).

5. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 3, wherein: be detachable construction between mount pad (121) and stator (101), second mounting hole (107) have been seted up on mount pad (121), mount pad (121) connecting piece passes second mounting hole (107) and fixes mount pad (121) on stator (101), set up on stator (101) with second mounting hole (107) complex third mounting hole (108), be fixed with on the pincers body of stopper (104) installation ear (109), installation ear (109) are through connecting piece fixed mounting on mount pad (121).

6. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 4, wherein: the mounting seat (121) comprises a first connecting piece (110) used for being fixed with the end face of the stator (101) and a second connecting piece (111) used for being mounted with the brake (104), one side, close to the second connecting piece (111), of the second mounting hole (107) is provided with a mounting space (112), and the mounting space (112) provides an operation space for the second connecting piece (111) to be inserted into the second mounting hole (107).

7. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 5, wherein: a supporting arm (113) is connected between the first connecting piece (110) and the second connecting piece (111), and an installation space (112) is formed among the first connecting piece (110), the second connecting piece (111) and the supporting arm (113).

8. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 6, wherein: the length of the second connecting piece (111) is smaller than that of the first connecting piece (110).

9. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 1, wherein: a mounting lug (109) is fixed on the caliper body of the brake (104), a through hole matched with the stator (101) is formed in the mounting lug (109), and the mounting lug (109) is fixedly connected with the stator (101) through a bolt; a cooling water channel (114) is arranged in the stator (101), and an inlet and an outlet of the cooling water channel (114) are arranged on the outer end face of the stator (101).

10. The connecting structure of a brake, a knuckle, and an in-wheel motor according to claim 1, wherein: the brake (104) comprises a brake caliper body, the brake caliper body comprises an upper caliper body (123) and a lower caliper body (124), a jaw (125) is formed between the upper caliper body (123) and the lower caliper body (124), the brake disc (103) is installed in the jaw (125), the brake disc (103) penetrates through the jaw (125), the shape of the jaw (125) is matched with that of the brake disc (103), and the upper caliper body (123) and the lower caliper body (124) are of an integrally formed structure or a detachable structure; when the upper clamp body (123) and the lower clamp body (124) are of detachable structures, the upper clamp body (123) and the lower clamp body (124) are fixedly connected through fixing bolts, and the number of the fixing bolts is not less than two.