CN217590435U

CN217590435U - In-wheel motor

Info

Publication number: CN217590435U
Application number: CN202221275092.0U
Authority: CN
Inventors: 周鹏博; 张立成; 张林江; 郑海刚
Original assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Current assignee: Zhejiang Qianjiang Motorcycle Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-10-14
Anticipated expiration: 2032-05-25

Abstract

The utility model provides an in-wheel motor belongs to in-wheel motor technical field. It has solved current in-wheel motor and has leaded to the too big problem of the whole width of wheel hub because of the setting of sealing washer. This wheel hub motor, establish on the motor shaft and just to the wheel hub lid that sets up including motor shaft, rim and two covers, connect through the rim between two wheel hub lids, the outer border department of wheel hub lid has all seted up along circumference and has been offered and be annular seal groove, the opening of seal groove all sets up along the inner peripheral surface of radial orientation rim, this wheel hub motor still includes two sealing washers that set up in corresponding seal groove, the outside of sealing washer is supported tightly through the inner peripheral surface of opening and rim. The hub motor only increases the diameter of the hub of the vehicle body by adopting a sealing ring radial sealing mode, so that compared with the width of the hub of the vehicle body, the influence of the diameter of the hub of the vehicle body on the vehicle body is not large, and the sealing performance between the hub cover and the rim is also ensured.

Description

In-wheel motor

Technical Field

The utility model belongs to the technical field of in-wheel motor, a in-wheel motor is related to.

Background

The hub motor is designed by integrating a power system, a transmission system and a brake system of a vehicle, the hub motor technology is also called in-wheel motor technology, the motor for driving the vehicle is arranged in a wheel rim, the technology outside the hub can greatly simplify the mechanical part of the electric vehicle, a general four-wheel vehicle can arrange one hub motor in four wheels respectively, cooling liquid needs to be added in the hub motor when the hub motor runs to ensure the heat dissipation of the hub motor, but the cooling liquid in the hub motor needs to be prevented from flowing out during running, and therefore a plurality of sealing rings are arranged between a hub cover and a motor shell of the hub motor.

The Chinese patent application (CN 107492971A) discloses an electric vehicle hub motor, which comprises a motor shaft, a motor end cover sealing oil seal, a motor end cover, a sealing ring, a sliding pin spring, a sliding pin observation hole, a tapered sliding pin, a motor shell, a motor stator, a bearing, an end cover locking nut, a motor end cover positioning hole and a motor shell sliding pin hole.

The sealing ring in the structure is axially installed along the hub motor, the sealing effect can be achieved, the axial width of the motor can be increased, the width of the hub of the vehicle body can be directly influenced by the increase of the axial width of the hubs, and therefore the whole frame of the vehicle body is influenced, and the whole design of the vehicle body is influenced.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a wheel hub motor, the utility model aims to solve the technical problem that: how to solve current in-wheel motor and lead to the too big problem of the whole width of wheel hub because of the setting of sealing washer.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an in-wheel motor, includes that motor shaft, rim and two covers establish on the motor shaft and just to the wheel hub lid that sets up, connect through the rim between two wheel hub lids, a serial communication port, the outer border department of wheel hub lid has all seted up along circumference and has been offered and be annular seal groove, the opening of seal groove all sets up along the inner peripheral surface towards the rim, and this in-wheel motor still includes two sealing washers that set up in corresponding seal groove, the inner peripheral surface of opening and rim is supported tightly in the outside of sealing washer.

The sealing grooves are formed in the outer edges of the two hub covers along the circumferential direction, the openings of the sealing grooves are arranged along the radial direction and face the inner circumferential surface of the rim, the outer side of the sealing ring positioned in the sealing grooves can be abutted against the inner circumferential surface of the rim, so that the radial sealing between the hub covers and the rim is realized, the two hub covers can be sleeved on the motor shaft by adopting the design of the two hub covers and the rim, the rim is arranged between the two hub covers and is axially and fixedly connected with the two hub covers after the sealing ring is placed in the sealing groove, so that the sealing ring is not easy to generate large displacement when the hub covers and the rim are installed, and the sealing effect of the sealing ring is further ensured; and through adopting the mode of sealing washer radial seal, only increased the diameter of automobile body wheel hub, and the factor that influences automobile body wheel hub diameter has a lot of, for example the size of tire, the size of the internal gas pressure of tire etc. consequently compare in the width that increases automobile body wheel hub, increase the diameter of automobile body wheel hub and not greatly to the influence of automobile body, also guarantee the leakproofness between hubcap and the rim.

In foretell in-wheel motor, all have on the wheel hub lid and be annular sealed fender edge, the outside on sealed fender edge is seted up to the seal groove, the rim sets up in the outside on sealed fender edge and keeps off along the counterbalance with sealed fender and lean on.

The arrangement of the sealing blocking edge can ensure that the rim can abut against the sealing ring in the sealing blocking edge during the installation, the supporting and positioning effects can be realized, and then the rim is connected with the two hub covers, so that the installation of the hub motor is more stable; meanwhile, the rim and the hub cover can realize stable radial sealing, and the radial sealing structure has small overall influence on the vehicle body only by improving the structure of the hub cover.

In foretell in-wheel motor, two wheel hub lid just right one sides have and are annular limiting plate, and the limiting plate that same wheel hub was covered keeps off along supporting that formation can supply the rim to support to lean on the groove with sealed, support and seted up above-mentioned seal groove on the cell wall in groove.

Lean on the setting of supporting the groove for the rim setting can carry out axial spacing through supporting by supporting when two hubcaps, thereby makes in-wheel motor's installation more convenient, has also promoted the stability of seal groove inner seal circle installation.

In the above-mentioned in-wheel motor, the motor shaft is sleeved with a bearing and an oil seal, and the oil seal is located on the inner side of the bearing.

Through being located the inboard of bearing with the oil blanket, the bearing can carry out the processing of spraying paint outside this moment to can make the appearance of automobile body more changeable.

In foretell in-wheel motor, have the bearing section that can supply the bearing housing to establish and the oil blanket section that can supply the oil blanket cover to establish on the motor shaft, the diameter of motor shaft at the bearing section is less than the diameter of oil blanket section.

Through being provided with oil blanket section and bearing section for the installation of bearing and oil blanket is convenient more stable, also can play spacing effect to the oil blanket, makes the oil blanket can not take place axial displacement, has promoted in-wheel motor's stability.

In the hub motor, the hub cover is provided with a sealing surface which can be abutted against the outer wall of the oil seal and an abutting step which can be abutted against by the bearing, and the abutting step is provided with an abutting surface I which is abutted against the outer side surface of the bearing and an abutting surface II which is abutted against the end surface of the bearing.

The setting of sealed face has promoted the stability of oil blanket installation, and supports to lean on the setting of step, can carry on spacingly to bearing circumference and axial, promotes the stability of bearing installation.

Compared with the prior art, the hub motor has the advantages that: through adopting the radially sealed mode of sealing washer, only increased automobile body hub's diameter, and the factor that influences automobile body hub diameter has a lot, for example the size of tire, the size of tire internal gas pressure etc. consequently compare in the width that increases automobile body hub, increase automobile body hub's diameter and not big to the influence of automobile body, also guarantee the leakproofness between hubcap and the rim.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A of fig. 1.

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

Fig. 4 is a partially enlarged view at B in fig. 2.

In the figure, 1, a motor shaft; 11. a bearing section; 12. an oil seal section; 2. a hub cap; 21. a sealing groove; 21a, an opening; 22. sealing the blocking edge; 23. a limiting plate; 24. an abutment groove; 25. a sealing surface; 26. abutting against the step; 26a, a first abutting surface; 26b, a second abutting surface; 3. a rim; 4. a seal ring; 5. a bearing; 6. and (7) oil sealing.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the hub motor includes a motor shaft 1, a rim 3, and two hub caps 2 that are sleeved on the motor shaft 1 and are opposite to each other, and the two hub caps 2 are connected through the rim 3.

As shown in fig. 1 to 4, the opposite sides of the two hub caps 2 are provided with annular limiting plates 23, the outer edges of the hub caps 2 are circumferentially provided with annular sealing flanges 22, the limiting plates 23 and the sealing flanges 22 on the same hub cap 2 form an abutting groove 24 for abutting against the rim 3, an annular sealing groove 21 is formed on the wall of the abutting groove 24, openings 21a of the sealing groove 21 are radially arranged toward the inner circumferential surface of the rim 3, the hub motor further comprises two sealing rings 4 arranged in the corresponding sealing grooves 21, and the outer sides of the sealing rings 4 abut against the inner circumferential surface of the rim 3 through the openings 21 a.

The sealing grooves 21 are formed in the outer edges of the two hub covers 2 along the circumferential direction, openings of the sealing grooves 21 are arranged along the radial direction and face the inner circumferential surface of the rim 3, the outer side of the sealing ring 4 located in the sealing groove 21 can be abutted against the inner circumferential surface of the rim 3, so that the radial sealing between the hub covers 2 and the rim 3 is realized, and by adopting the design of the two hub covers 2 and the rim 3, the two hub covers 2 can be sleeved on the motor shaft 1, the sealing ring 4 is placed in the sealing groove 21, then the rim 3 is arranged between the two hub covers 2 and is axially and fixedly connected with the two hub covers 2, so that the sealing ring 4 is not easy to generate large displacement when the hub covers 2 and the rim 3 are installed, and the sealing effect of the sealing ring 4 is further ensured; by adopting the radial sealing mode of the sealing ring 4, the diameter of the vehicle hub is only increased, and factors influencing the diameter of the vehicle hub are many, such as the size of a tire, the size of air pressure in the tire and the like, so that compared with the width increase of the vehicle hub, the influence of the diameter increase of the vehicle hub on the vehicle is small, and the sealing performance between the hub cover 2 and the rim 3 is also ensured.

As shown in fig. 2 and 4, the motor shaft 1 has a bearing section 11 for the bearing 5 to be sleeved with and an oil seal section 12 for the oil seal 6 to be sleeved with, the bearing section 11 of the motor shaft 1 is sleeved with the bearing 5, the oil seal section 12 of the motor shaft 1 is sleeved with the oil seal 6, the oil seal 6 is located inside the bearing 5, and the diameter of the motor shaft 1 at the bearing section 11 is smaller than that of the oil seal section 12.

As shown in fig. 4, the hub cover 2 has a sealing surface 25 capable of abutting against the outer wall of the oil seal 6 and an abutting step 26 against which the bearing 5 abuts, and the abutting step 26 has an abutting surface one 26a abutting against the outer side surface of the bearing 5 and an abutting surface two 26b abutting against the end surface of the bearing 5.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a wheel hub motor, includes that motor shaft (1), rim (3) and two covers establish on motor shaft (1) and just to wheel hub cover (2) that set up, connect through rim (3) between two wheel hub covers (2), its characterized in that, the outside of wheel hub cover (2) is followed circumference and is offered and be annular seal groove (21), the opening (21 a) of seal groove (21) all sets up along the inner peripheral surface of radial orientation rim (3), and this wheel hub motor still includes two sealing washer (4) that set up in corresponding seal groove (21), the inner peripheral surface that opening (21 a) and rim (3) were passed through in the outside of sealing washer (4) supports tightly.

2. The hub motor according to claim 1, wherein the hub cover (2) has an annular sealing edge (22), the sealing groove (21) is opened at the outer side of the sealing edge (22), and the rim (3) is arranged at the outer side of the sealing edge (22) and abuts against the sealing edge (22).

3. The hub motor according to claim 2, wherein the opposite sides of the two hub covers (2) are provided with annular limiting plates (23), the limiting plates (23) and the sealing blocking edges (22) on the same hub cover (2) form a supporting groove (24) for supporting the rim (3), and the groove wall of the supporting groove (24) is provided with the sealing groove (21).

4. The in-wheel motor according to claim 1, 2 or 3, characterized in that the motor shaft (1) is sleeved with a bearing (5) and an oil seal (6), and the oil seal (6) is positioned on the inner side of the bearing (5).

5. The in-wheel motor according to claim 4, characterized in that the motor shaft (1) is provided with a bearing section (11) for sleeving the bearing (5) and an oil seal section (12) for sleeving the oil seal (6), and the diameter of the motor shaft (1) at the bearing section (11) is smaller than that of the oil seal section (12).

6. The hub motor according to claim 4, wherein the hub cover (2) is provided with a sealing surface (25) which can abut against the outer wall of the oil seal (6) and an abutting step (26) against which the bearing (5) can abut, and the abutting step (26) is provided with a first abutting surface (26 a) which abuts against the outer side surface of the bearing (5) and a second abutting surface (26 b) which abuts against the end surface of the bearing (5).