CN218549722U

CN218549722U - In-wheel motor subassembly and tire

Info

Publication number: CN218549722U
Application number: CN202223138177.7U
Authority: CN
Inventors: 龙敦祥; 刘远洋; 刘习
Original assignee: Shenzhen Shengmayo Technology Co ltd
Current assignee: Shenzhen Shengmayo Technology Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-02-28
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a hub motor component, which comprises a hub, a stator and a rotor, wherein the hub is a hollow cavity; the hub cover is detachably connected to the side edge of the hub, and the hub cover form a closed hollow cavity; the motor shaft is connected with the center of the hub through a first bearing, and the other end of the motor shaft is connected with the hub cover through a second bearing and penetrates through the center of the hub cover; a stator fixedly arranged on the motor shaft; a coil assembly fixedly disposed on the stator; the magnet group surrounds the coil group and comprises a plurality of magnets which are uniformly and equidistantly connected to form a circular ring which is fixedly arranged on the inner ring of the hub; and the Hall plate is fixedly arranged on the stator, and the identification signal of the Hall plate is reversed. The utility model also discloses a tire. The utility model discloses an adopt the hall to commutate, cut apart into polylith magnet to circle ring shape magnet simultaneously and replace, solved the higher problem of current balance car wheel hub motor cost.

Description

In-wheel motor subassembly and tire

Technical Field

The utility model relates to a balance car accessory technical field, in particular to in-wheel motor subassembly and tire.

Background

With the development of science and technology, the balance car gradually becomes a convenient vehicle which is received by people; particularly, when patrolling in a forest area or in the field, the cross-country patrol balance car can effectively improve the patrol efficiency. In the prior art, an encoder is used for controlling the motor to commutate in most 8-inch hub motors of the cross-country patrol balance cars on the market, but the cost of the encoder is high; meanwhile, the magnet of the 8-inch hub motor of the existing off-road patrol balance car is generally a customized round magnet or a round magnet combined by two C-shaped magnets, the customized magnet in the shape needs a certain amount of order, and the capital pressure is high; therefore, the wheel hub motor assembly and the tire are provided for solving the problem that the cost of the wheel hub motor of the existing balance wheel is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an in-wheel motor subassembly and tire to solve the higher problem of current balance car wheel hub motor cost.

The utility model relates to a wheel hub motor subassembly and tire can realize through following technical scheme:

the utility model relates to a hub motor component, which comprises a hub, a hollow cavity and a motor shaft, wherein the hub is provided with a hollow cavity; the hub cover is detachably connected to the side edge of the hub, and the hub cover and the hub form a closed hollow cavity; the motor shaft is connected with the center of the hub through a first bearing, and the other end of the motor shaft is connected with the hub cover through a second bearing and penetrates through the center of the hub cover; a stator fixedly arranged on the motor shaft; a coil assembly fixedly disposed on the stator; the magnet group surrounds the coil group and comprises a plurality of magnets which are uniformly and equidistantly connected to form a circular ring which is fixedly arranged on the inner ring of the hub; and the Hall plate is fixedly arranged on the stator, and the identification signal of the Hall plate is reversed.

In one embodiment, a first mounting cavity is formed in the hub at a central position inside the hub, and the first bearing is arranged in the first mounting cavity; a plurality of first fixing holes are formed in the hub.

In one embodiment, a second mounting cavity is arranged at a central position inside the hub cover, and the second bearing is arranged in the second mounting cavity; the side of the hub cover is provided with a circular boss, and the boss extends into the hub.

In one embodiment, a plurality of second fixing holes are arranged on the boss, and the second fixing holes are respectively matched with the corresponding first fixing holes.

In one embodiment, an oil seal is further disposed in the second mounting cavity.

In one embodiment, a plurality of grooves are uniformly and equidistantly formed in the stator, each coil group comprises a plurality of coils, and the plurality of coils are respectively and fixedly arranged in the corresponding grooves.

In one embodiment, the number of slots and coils is 36.

In one embodiment, the magnet group comprises 40 magnets, and the 40 magnets are uniformly and equidistantly attached to the inner ring of the hub.

A tire includes the in-wheel motor subassembly of any one of the above-mentioned and tire main part, the tire main part sets up on the in-wheel motor subassembly.

Compared with the prior art, the utility model relates to a beneficial effect of in-wheel motor subassembly and tire does:

the utility model relates to a wheel hub motor subassembly and tire adopt hall to commutate, adopt the thinking of finite element simultaneously, cut apart into a circular polylith magnet, myopia replaces ring shape magnet, and this kind of magnet need not to be customized, and the quantity is also many on the market, has solved the higher problem of current balance wheel hub motor cost effectively;

the utility model relates to a wheel hub motor assembly and a tire, which solves the problem of shaking and swaying of a motor by installing a motor shaft at the central positions of a wheel hub and a wheel hub cover;

the utility model relates to a wheel hub motor subassembly and tire are through setting up the boss on the wheel hub lid, come out through lathe processing and insert the wheel hub inner circle, and the machining precision of lathe is far greater than the machining precision of drilling machine, and the cooperation between boss and the wheel hub is a face contact in addition, than the longe-lived of screw and hole line contact, has prolonged life to a certain extent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic structural view of an in-wheel motor assembly according to the present invention;

fig. 2 is a schematic diagram of an exploded structure of an in-wheel motor assembly of the present invention shown in fig. 1, including a wheel hub and a wheel hub cover;

fig. 3 is a schematic cross-sectional structure view of a hub motor assembly according to the present invention shown in fig. 1;

fig. 4 is a schematic structural view of a wheel hub in the wheel hub motor assembly shown in fig. 2;

FIG. 5 is a schematic view of a hub cover of the hub motor assembly of FIG. 2;

fig. 6 is a schematic structural diagram of a tire according to the present invention.

The figures are marked by: 10, a hub motor assembly; 11, a hub; 111, a first mounting cavity; 112, a first fixing hole; 12, a hub cap; 121, a second fixing cavity; 122, a boss; 123, a second fixing hole; 13, a motor shaft; 14, a stator; 141, a trough body; 15, coil assembly; 16, a magnet group; 17, a Hall plate; 181, a first bearing; 182, a second bearing; 19, oil sealing; 20, a tire body.

Detailed Description

Referring to fig. 1-3, a wheel hub motor assembly 10 of the present invention is applied to a cross-country patrol car, and mainly includes a wheel hub 11, a wheel hub cover 12, a motor shaft 13, a stator 14, a coil assembly 15, a magnet assembly 16, and a hall plate 17; the hub 11 is a hollow cavity; the hub cover 12 is detachably connected to the side of the hub 11, and the hub 11 and the hub cover 12 form a closed hollow cavity; one end of the motor shaft 13 is connected to the center of the hub 11 through a first bearing 181, and the other end thereof is connected to the hub cover 12 through a second bearing 182 and penetrates through the center of the hub cover 12; the stator 14 is fixedly arranged on the motor shaft 13; the coil assembly 15 is fixedly arranged on the stator 14; the magnet group 16 is fixedly arranged on the inner ring of the hub 11 and surrounds the coil group 15, and rotates along with the rotation of the hub 11; the hall plate 17 is fixedly arranged on the stator 14 and used for identifying signals to commutate, so that the forward rotation or the reverse rotation of the hub motor assembly 10 is realized; the hall plate 17 is a conventional one, and therefore, the detailed structure and signals used therein are not described herein, as long as the present application is satisfied.

Referring to fig. 1 to 4, in the present embodiment, a first mounting cavity 111 is disposed at a central position of an inner side of the hub 11, and the first bearing 181 is disposed in the first mounting cavity 111; the hub 11 is provided with a plurality of first fixing holes 112, and the hub cover 12 is fixed on the side of the hub 11 by matching screws with the plurality of first fixing holes 112.

Referring to fig. 2, 3 and 5, in the present embodiment, a second mounting cavity 121 is disposed at a central position inside the hub cover 12, and the second bearing 182 is disposed in the second mounting cavity 121; the side edge of the hub cover 12 is provided with a circular boss 122, and the boss 122 extends into the hub 11; the boss 122 is provided with a plurality of second fixing holes 123, the plurality of second fixing holes 123 are respectively matched with the corresponding first fixing holes 112, and screws respectively penetrate through the corresponding first fixing holes 112 and the corresponding second fixing holes 123 to fix the hub cover 12 on the side of the hub 11.

Referring to fig. 2, a plurality of slots 141 are uniformly and equidistantly formed on the stator 14, the coil assembly 15 includes a plurality of coils, the plurality of coils are respectively and fixedly disposed in the corresponding slots 141, and the number and size of the slots 141 are respectively matched with those of the coils; in this embodiment, the number of the slots 141 and the coils is 36; in other embodiments, the number of the slots 141 and the coils may also be 6, 12, 18, 24 or other multiple, and the number may be set according to actual requirements. In this embodiment, the magnet set 16 includes a plurality of magnets, which are uniformly and equidistantly connected to form a circular ring and fixedly disposed on the inner ring of the hub 11; in the present embodiment, the magnet set 16 includes 40 magnets, and the 40 magnets are uniformly and equidistantly attached to the inner ring of the hub 11; in other embodiments, the number of the magnets may also be 16, 24, 32 or more, and the number may be set according to actual requirements. In this embodiment, an oil seal 19 is further disposed in the second mounting cavity 121, and oil leakage is prevented by the action of the oil seal 19.

Referring to fig. 6, a tire comprises the hub motor assembly 10 and the tire main body 20, wherein the tire main body 20 is disposed on the hub motor assembly 10.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The wheel hub motor component is characterized by comprising a wheel hub, a motor shaft and a motor shaft, wherein the wheel hub is a hollow cavity; the hub cover is detachably connected to the side edge of the hub, and the hub cover and the hub form a closed hollow cavity; the motor shaft is connected with the center of the hub through a first bearing, and the other end of the motor shaft is connected with the hub cover through a second bearing and penetrates through the center of the hub cover; a stator fixedly arranged on the motor shaft; a coil group fixedly arranged on the stator; the magnet group surrounds the coil group and comprises a plurality of magnets which are uniformly and equidistantly connected to form a circular ring fixedly arranged on the inner ring of the hub; and the Hall plate is fixedly arranged on the stator, and the identification signal of the Hall plate is reversed.

2. The in-wheel motor assembly of claim 1, wherein a first mounting cavity is formed at a central position of the inner side of the wheel hub, and the first bearing is arranged in the first mounting cavity; a plurality of first fixing holes are formed in the hub.

3. The hub motor assembly of claim 2, wherein a second mounting cavity is provided at a central location inside the hub cap, and the second bearing is provided in the second mounting cavity; the side of the hub cover is provided with a circular boss, and the boss extends into the hub.

4. The in-wheel motor assembly of claim 3, wherein a plurality of second fixing holes are formed in the boss, and the plurality of second fixing holes are respectively matched with the corresponding first fixing holes.

5. An in-wheel motor assembly in accordance with claim 3 wherein an oil seal is also disposed in said second mounting cavity.

6. The in-wheel motor assembly as claimed in claim 1, wherein a plurality of slots are uniformly and equidistantly formed in the stator, the coil assembly comprises a plurality of coils, and the plurality of coils are respectively and fixedly arranged in the corresponding slots.

7. An in-wheel motor assembly according to claim 6, wherein the number of slots and coils is 36.

8. The hub motor assembly of claim 1, wherein the magnet assembly comprises 40 magnets, and 40 magnets are uniformly and equidistantly attached to the inner ring of the hub.

9. A tire comprising the in-wheel motor assembly of any one of claims 1-8 and a tire body disposed on the in-wheel motor assembly.