CN210821649U

CN210821649U - Motor hub, in-wheel motor and vehicle

Info

Publication number: CN210821649U
Application number: CN201921359208.7U
Authority: CN
Inventors: 张得社; 李巍; 毛卫丰
Original assignee: Ninebot Beijing Technology Co Ltd
Current assignee: Ninebot Beijing Technology Co Ltd; Ninebot Changzhou Technology Co Ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-23
Anticipated expiration: 2029-08-20
Also published as: WO2021032152A1

Abstract

The utility model discloses a motor wheel hub, in-wheel motor and vehicle, motor wheel hub includes: a first sub-hub configured with a motor cavity; the first sub-hub and the second sub-hub are distributed along the axial direction of the motor hub, the second sub-hub is detachably mounted on the first sub-hub, and the first sub-hub and the second sub-hub jointly define a tire mounting groove on the outer peripheral surface of the motor hub; and the end cover is arranged on the first sub-hub and covers the inner cavity of the motor. According to the utility model discloses motor wheel hub can make things convenient for the dismouting of tire to improve production efficiency, reduce the defective rate, be convenient for maintain the change.

Description

Motor hub, in-wheel motor and vehicle

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a motor wheel hub, have motor wheel hub's in-wheel motor with have in-wheel motor's vehicle.

Background

The motor hub is more and more common as a component part in a vehicle, and when the pneumatic tire and the motor with the inner tire in the related technology are installed on the motor hub in the production process, the operation is very inconvenient, the production efficiency is seriously influenced, the damage is easy to occur, the reject ratio is high, and in addition, a great deal of inconvenience is brought to the subsequent maintenance and replacement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a motor hub, this motor hub can make things convenient for the dismouting of tire to improve production efficiency, reduce the defective rate, be convenient for maintain the change.

The utility model discloses still provide an in-wheel motor with above-mentioned motor wheel hub.

The utility model discloses still provide a vehicle that has above-mentioned in-wheel motor.

In order to achieve the above object, according to the utility model discloses an embodiment of first aspect provides a motor wheel hub, motor wheel hub includes: a first sub-hub configured with a motor cavity; the first sub-hub and the second sub-hub are distributed along the axial direction of the motor hub, the second sub-hub is detachably mounted on the first sub-hub, and the first sub-hub and the second sub-hub jointly define a tire mounting groove on the outer peripheral surface of the motor hub; and the end cover is arranged on the first sub-hub and covers the inner cavity of the motor.

According to the utility model discloses motor wheel hub can make things convenient for the dismouting of tire to improve production efficiency, reduce the defective rate, be convenient for maintain the change.

In addition, according to the utility model discloses motor wheel hub can also have following additional technical characterstic:

according to some embodiments of the invention, the first sub-hub comprises: a wheel disc; the periphery of one side of the first wheel rim is connected with the periphery of the wheel disc, the first wheel rim and the wheel disc jointly define the inner cavity of the motor, and the second sub-hub is detachably mounted on the first wheel rim; the inner circumferential edge of the first tire limiting ring is connected with the other side circumferential edge of the first wheel rim, and the first tire limiting ring forms one side wall of the tire mounting groove.

Further, the second sub-hub includes: the second rim is connected with the first rim; the inner peripheral edge of the second tire limiting ring is connected with the peripheral edge of one side, far away from the first sub-hub, of the second wheel rim, and the second tire limiting ring forms the other side wall of the tire mounting groove; the outer peripheral edge of the stop ring is connected with one side peripheral edge, away from the first sub-hub, of the second rim, and the stop ring stops at the one side peripheral edge of the first rim.

Furthermore, the second rim is sleeved on the outer side of the first rim.

Further, the outer circumferential surface of the first rim is provided with a sunken groove extending along the circumferential direction of the first rim, and the second rim is assembled in the sunken groove.

Furthermore, one of the bottom wall of the sinking groove and the inner peripheral surface of the second rim is provided with a positioning protrusion, the other one of the bottom wall of the sinking groove and the inner peripheral surface of the second rim is provided with a positioning groove, and the positioning protrusion is matched in the positioning groove.

Furthermore, the positioning protrusions are arranged on the bottom wall of the sinking groove at intervals along the circumferential direction of the first rim, the positioning grooves are arranged on the inner circumferential surface of the second rim at intervals along the circumferential direction of the second rim, and the positioning protrusions are matched in the positioning grooves in a one-to-one correspondence manner.

Further, one end, facing the stop ring, of the positioning protrusion is configured with a mounting hole, the stop ring is provided with a mounting hole, and the stop ring is mounted on the positioning protrusion through a first fastener which penetrates through the mounting hole and is matched in the mounting hole.

According to some embodiments of the present invention, the joint of the first rim and the wheel disc is configured with an annular groove, and the stop ring is fitted in the annular groove.

According to some embodiments of the invention, the end cover is mounted to the first rim by a plurality of second fasteners distributed along a circumference thereof.

According to some embodiments of the utility model, the both sides wall of tire mounting groove is equipped with the rib, the rib is followed the lateral wall of tire mounting groove extends to the diapire and the perpendicular to of tire mounting groove the circumference setting of tire mounting groove.

According to the utility model discloses an embodiment of second aspect provides an in-wheel motor, according to the utility model discloses an in-wheel motor includes: according to the utility model discloses an embodiment of first aspect motor wheel hub and tire, the tire install in the tire mounting groove.

According to the utility model discloses in-wheel motor has easy dismounting, production efficiency is high, the defective rate is low and convenient advantage such as maintain the change.

According to the utility model discloses an embodiment of third aspect provides a vehicle, according to the utility model discloses a vehicle includes according to the embodiment of second aspect in-wheel motor.

According to the utility model discloses the vehicle has easy dismounting, production efficiency is high, the defective rate is low and convenient advantage such as maintain the change.

Drawings

The above advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a motor hub according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another view angle of the motor hub according to the embodiment of the present invention.

Fig. 3 is an exploded view of a motor hub according to an embodiment of the present invention.

Fig. 4 is an exploded view from another perspective of a motor hub according to an embodiment of the present invention.

Fig. 5 is a cross-sectional view of an in-wheel motor according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of an in-wheel motor according to an embodiment of the present invention.

Reference numerals:

a motor hub 1, a hub motor 2, a tire 3,

The first sub-hub 10, the second sub-hub 20, the end cap 30, the through hole 31, the first fastener 40, the second fastener 50, the tire mounting groove 60, the rib 61, the second sub-hub, the third sub-hub, the fourth sub-hub, the fifth sub-hub, the,

The wheel disc 110, the first rim 120, the first tire spacing ring 130, the positioning protrusion 140, the mounting hole 150, the motor cavity 160, the sink groove 170, the ring groove 180,

Second rim 210, second tire retaining ring 220, positioning groove 230, mounting hole 240, and stop ring 250.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience and simplicity of description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, "a plurality" means two or more, and "a plurality" means one or more.

The following describes the in-wheel motor 2 according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 5 and 6, the in-wheel motor 2 according to the embodiment of the present invention includes a motor hub 1 and a tire 3, and the tire 3 may be a solid tire or a filled tire.

First, a motor hub 1 according to an embodiment of the present invention is described with reference to the drawings.

As shown in fig. 1 to 4, the motor hub 1 according to the embodiment of the present invention includes a first sub-hub 10, a second sub-hub 20, and an end cover 30.

The first sub-hub 10 is configured with a motor inner cavity 160, the first sub-hub 10 and the second sub-hub 20 are distributed along the axial direction of the motor hub 1, the second sub-hub 20 is detachably mounted on the first sub-hub 10, the first sub-hub 10 and the second sub-hub 20 jointly define a tire mounting groove 60 on the outer peripheral surface of the motor hub 1, and the end cover 30 is mounted on the first sub-hub 10 and covers the motor inner cavity 160.

Specifically, the first sub-hub 10, the second sub-hub 20 and the end cap 30 are integral parts of the motor hub 1. The first sub-hub 10 is configured with a motor cavity 160, one side of the motor cavity 160 facing the second sub-hub 20 is a closed side, and the other side has an opening, and the interior of the motor cavity 160 is a cavity and can accommodate motor components of the motor hub 1, such as a stator, a rotor, and the like. The central axis of the first sub-hub 10 and the central axis of the second sub-hub 20 are overlapped with each other to form the central axis of the motor hub 1, and the first sub-hub 10 and the second sub-hub 20 can be arranged in a split manner along the axial direction of the motor hub 1. The tire mounting groove 60 is open radially outward of the motor hub 1, and the remaining surfaces are closed surfaces formed by the first sub-hub 10 and the second sub-hub 20. The end cover 30 is installed on the first sub-hub 10, the area of the end cover is larger than the area of the opening of the motor cavity 160, the end cover covers one side of the opening of the motor cavity 160, and a through hole 31 for the rotating shaft to pass through is formed in the middle of the end cover 30.

In the in-wheel motor 2 according to the embodiment of the present invention, the tire 3 is mounted in the tire mounting groove 60.

In some examples of the present invention, as shown in fig. 1 and 2, two side walls of the tire mounting groove 60 may be provided with ribs 61, the ribs 61 may be L-shaped, the ribs 61 extend from the side wall of the tire mounting groove 60 to the bottom wall of the tire mounting groove 60, and the ribs 61 are perpendicular to the circumferential direction of the tire mounting groove 60, the ribs 61 are arranged in two circles along the circumferential direction of the tire mounting groove 60, on one hand, the ribs can play a role of a reinforcing structure, on the other hand, a certain extrusion can be formed with the tire 3, through the interaction of forces, the tire 3 is prevented from sliding with the motor hub 1, thereby improving the stability of the tire 3.

According to the utility model discloses motor wheel hub 1 and in-wheel motor 2 through setting up motor wheel hub 1 into first sub-wheel hub 10, sub-wheel hub 20 of second and end cover 30 along its axial, constitutes the components of a whole that can function independently structure from this, consequently, can greatly make things convenient for the dismouting of tire 3.

Specifically, in the installation process, the first sub-hub 10, the second sub-hub 20 and the end cover 30 are separated, the motor part of the motor hub 1 is installed in the motor inner cavity 160, and then the end cover 30 is installed on the first sub-hub 10 and covers the motor inner cavity 160; then, the tire 3 is fitted over the first sub-hub 10, and the second sub-hub 20 is press-fitted onto the first sub-hub 10, so that the first sub-hub 10 and the second sub-hub 20 together define the tire fitting groove 60 for holding the tire 3, thereby completing the fitting of the tire 3.

In the dismounting process, the second sub-hub 20 is firstly dismounted from the first sub-hub 10, and the tire 3 can be easily dismounted from the first sub-hub 10 because the tire 3 is not clamped any more, so that the dismounting of the tire 3 is completed; the end cap 30 is then removed from the first sub-hub 10, and the motor parts of the motor hub 1 in the motor cavity 160 are removed.

From this, the dismouting of tire 3 is very convenient, and then can improve production efficiency by a wide margin, and is difficult for taking place to damage in assembling process, has reduced the defective rate to, because the easy dismounting of tire 3, subsequent maintenance change of can being convenient for.

Therefore, according to the utility model discloses motor wheel hub 1 and in-wheel motor 2 can make things convenient for the dismouting of tire 3 to improve production efficiency, reduce the defective rate, be convenient for maintain the change.

In some embodiments of the present invention, as shown in fig. 1-4, the first sub-hub 10 includes a wheel disc 110, a first rim 120, and a first tire retainer 130.

The second sub-hub 20 is detachably mounted on the first rim 120, a peripheral edge of one side of the first rim 120 is connected to an outer peripheral edge of the wheel disc 110, the first rim 120 and the wheel disc 110 together define a motor cavity 160, an inner peripheral edge of the first tire retaining ring 130 is connected to a peripheral edge of the other side of the first rim 120, and the first tire retaining ring 130 forms a side wall of the tire mounting groove 60.

Specifically, the wheel disc 110 is a disc shape, a through hole for the rotation shaft to pass through is formed in the middle of the wheel disc 110, and the wheel disc 110 forms a closed surface of the motor inner cavity 160. The first rim 120 can be embedded in the second sub-hub 20. A side peripheral edge of the first rim 120 facing the second sub-hub 20 is connected to an outer peripheral edge of the wheel disc 110. The first tire retaining ring 130 is located on the other side of the first rim 120 away from the second sub-hub 20, and the inner peripheral edge of the first tire retaining ring 130 is connected to the other side of the first rim 120, and the first tire retaining ring 130 forms a sidewall of the tire mounting groove 60. The wheel disc 110, the first rim 120, and the first tire stopper 130 are integrally formed and the central axes coincide with each other. The first rim 120 and the wheel disc 110 together define a motor cavity 160, i.e., a space defined by the inner circumferential surface of the first rim 120, the surface of the wheel disc 110 away from the second sub-hub 20, and the end cover 30 is the motor cavity 160. Therefore, the first sub-hub 10 has stable and reasonable structure and convenient processing, and is convenient to assemble with the second sub-hub 20 and the end cover 30.

Further, second sub-hub 20 includes a second rim 210, a second tire retaining ring 220, and a stop ring 250.

When the second sub-hub 20 is mounted on the first sub-hub 10, the second rim 210 of the second sub-hub 20 is connected to the first rim 120 of the first sub-hub 10. The inner circumferential edge of the second tire retaining ring 220 is connected to the circumferential edge of the second rim 210 on the side away from the first sub-hub 10, the second tire retaining ring 220 forms the other side wall of the tire mounting groove 60, the outer circumferential edge of the stop ring 250 is connected to the circumferential edge of the second rim 210 on the side away from the first sub-hub 10, and the stop ring 250 is stopped on the circumferential edge of the first rim 120 on the side (i.e., the circumferential edge of the first rim 120 connected to the wheel disc 110).

In other words, the second tire retaining ring 220 extends outward along the radial direction of the second sub-hub 20 on the side of the second rim 210 far away from the first sub-hub 10, and is enclosed around the second rim 210, and the central axes of the second tire retaining ring 220 and the second rim 210 coincide with each other. When the second sub-hub 20 is mounted on the first sub-hub 10, the second rim 210 is connected to the first rim 120, i.e. the outer circumferential surface of the first rim 120 and the outer circumferential surface of the second rim 210 together form the bottom wall of the tire mounting groove 60, and the first tire retaining ring 130 and the second tire retaining ring 220 respectively form two side walls of the tire mounting groove 60. Stop ring 250 extends inward in the radial direction of second sub-hub 20 at the one side periphery of second rim 210, and is closely surrounded on second rim 210. Second rim 210, second tire retaining ring 220, and stop ring 250 are integrally formed. Therefore, the second sub-hub 20 is stable and reasonable in structure and convenient to process. The first sub-hub 10 and the second sub-hub 20 are assembled to form a tire mounting groove 60 capable of sandwiching the tire 3.

Optionally, when second sub-hub 20 is mounted on first sub-hub 10, second rim 210 can be sleeved on the outer side of first rim 120. In other words, a side of first rim 120 close to second rim 210 can be inserted into second rim 210. Therefore, the first sub-hub 10 and the second sub-hub 20 are convenient to disassemble, close to match and stable in structure.

Further, as shown in fig. 3 to 4, the outer circumferential surface of the first rim 120 is provided with a sink groove 170 extending along the circumferential direction thereof, and the second rim 210 is fitted in the sink groove 170, whereby the outer circumferential surface of the first rim 120 and the outer circumferential surface of the second rim 210 can be made flush.

Specifically, one of the bottom wall of the sink groove 170 and the inner circumferential surface of the second rim 210 is provided with a positioning protrusion 140 and the other is provided with a positioning groove 230, and the positioning protrusion 140 is fitted in the positioning groove 230. For example, the bottom wall of the sunken groove 170 of the first rim 120 is provided with the positioning protrusion 140, and the inner circumferential surface of the second rim 210 is provided with the positioning groove 230, so that the relative positions of the first sub-hub 10 and the second sub-hub 20 in the circumferential direction of the motor hub 1 are ensured to be fixed, the first sub-hub 10 and the second sub-hub 20 can be pre-positioned in the assembling process, and the assembling is further facilitated.

Further, the positioning protrusions 140 are multiple and are disposed at intervals along the circumferential direction of the first rim 120 on the bottom wall of the sink groove 170, the positioning grooves 230 are multiple and are disposed at intervals along the circumferential direction of the second rim 210 on the inner circumferential surface of the second rim 210, and the positioning protrusions 140 are fitted in the positioning grooves 230 in a one-to-one correspondence manner.

In some specific examples of the present invention, as shown in fig. 3 and 4, one end of the positioning protrusion 140 facing the stop ring 250 is configured with a mounting hole 150, the stop ring 250 is provided with a fitting hole 240, and the stop ring 250 is mounted to the positioning protrusion 140 by a first fastening member 40 passing through the fitting hole 240 and fitted in the mounting hole 150.

For example, the plurality of positioning protrusions 140 are disposed at the bottom wall of the sink groove 170 at equal intervals in the circumferential direction of the first rim 120, and protrude outward in the radial direction of the first rim 120 at the bottom wall of the sink groove 170. A plurality of mounting recesses 230 are formed at an inner circumferential surface of second rim 210 at equal intervals in a circumferential direction of second rim 210, and are recessed outward in a radial direction of second rim 210 at the inner circumferential surface of second rim 210. The positioning protrusions 140 are fitted into the positioning grooves 230 in a one-to-one correspondence.

The assembling holes 240 are disposed on the stop ring 250, and the number of the assembling holes 240 is the same as that of the positioning grooves 230, and corresponds to one another. The fitting holes 240 are located inside the positioning recesses 230 in the radial direction of the second rim 210. The end of the positioning projection 140 facing the stop collar 250 is configured with a mounting hole 150. The first fastener 40 may be a threaded fastener, such as a bolt, and the mounting hole 150 may be a threaded hole that mates with the fastener 30. Therefore, the first sub-hub 10 and the second sub-hub 20 can be fixed, and the motor hub 1 is stable in structure and convenient to detach.

In some embodiments of the present invention, as shown in fig. 3-4, the joint of the first rim 120 and the wheel disc 110 is configured with a ring groove 180, and the stop ring 250 is fitted in the ring groove 180. Therefore, the matching tightness of the first sub-hub 10 and the second sub-hub 20 is further improved, the structure of the motor hub 1 is stable, and the appearance of the motor hub 1 is smoother.

In some embodiments of the present invention, as shown in fig. 2-4, the end cap 30 is mounted to the first rim 120 by a plurality of second fasteners 50 distributed along a circumferential direction thereof. Specifically, the second fasteners 50 may be threaded fasteners, such as bolts, and the first rim 120 has fastener-engaging mounting structures, such as threaded holes, for the second fasteners 50 in a direction toward the end cap 30. Therefore, the first sub-hub 10 and the end cover 30 can be fixed, and the stable structure and the convenient disassembly of the motor hub 1 are ensured.

The vehicle according to the embodiment of the present invention is described below with reference to the drawings, and the vehicle according to the embodiment of the present invention includes the in-wheel motor 2 according to the present invention, and the vehicle may be a scooter, a balance car, etc., and this embodiment is not specifically limited to this.

According to the utility model discloses the vehicle, through utilizing according to the utility model discloses in-wheel motor 2 of above-mentioned embodiment has easy dismounting, production efficiency is high, the defective rate is low and convenient advantage such as maintain the change.

Other configurations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "particular embodiment," "particular example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric motor hub, comprising:

a first sub-hub configured with a motor cavity;

the first sub-hub and the second sub-hub are distributed along the axial direction of the motor hub, the second sub-hub is detachably mounted on the first sub-hub, and the first sub-hub and the second sub-hub jointly define a tire mounting groove on the outer peripheral surface of the motor hub;

and the end cover is arranged on the first sub-hub and covers the inner cavity of the motor.

2. The electric machine hub of claim 1, wherein the first sub-hub comprises:

a wheel disc;

the periphery of one side of the first wheel rim is connected with the periphery of the wheel disc, the first wheel rim and the wheel disc jointly define the inner cavity of the motor, and the second sub-hub is detachably mounted on the first wheel rim;

the inner circumferential edge of the first tire limiting ring is connected with the other side circumferential edge of the first wheel rim, and the first tire limiting ring forms one side wall of the tire mounting groove.

3. The electric machine hub of claim 2, wherein the second sub-hub comprises:

the second rim is connected with the first rim;

the inner peripheral edge of the second tire limiting ring is connected with the peripheral edge of one side, far away from the first sub-hub, of the second wheel rim, and the second tire limiting ring forms the other side wall of the tire mounting groove;

the outer peripheral edge of the stop ring is connected with one side peripheral edge, away from the first sub-hub, of the second rim, and the stop ring stops at the one side peripheral edge of the first rim.

4. The motor hub of claim 3, wherein said second rim is disposed about an outer side of said first rim.

5. The motor hub of claim 4, wherein the outer peripheral surface of the first rim is provided with a depressed groove extending along a circumferential direction thereof, and the second rim is fitted in the depressed groove.

6. The motor hub according to claim 5, wherein one of the bottom wall of the sink groove and the inner peripheral surface of the second rim is provided with a positioning projection and the other is provided with a positioning groove, the positioning projection being fitted in the positioning groove.

7. The hub according to claim 6, wherein the positioning protrusions are plural and are disposed at intervals along the circumferential direction of the first rim on the bottom wall of the sink groove, the positioning grooves are plural and are disposed at intervals along the circumferential direction of the second rim on the inner circumferential surface of the second rim, and the plural positioning protrusions are fitted in the plural positioning grooves in a one-to-one correspondence.

8. The electric motor hub of claim 7, wherein an end of the positioning protrusion facing the stop ring is configured with a mounting hole, the stop ring is provided with a mounting hole, and the stop ring is mounted to the positioning protrusion by a first fastener passing through the mounting hole and fitting within the mounting hole.

9. The motor hub of claim 3, wherein the junction of said first rim and said wheel disk is configured with an annular groove, said stop ring fitting within said annular groove.

10. The motor hub of claim 2, wherein said end cap is mounted to said first rim by a plurality of second fasteners distributed circumferentially thereof.

11. A motor hub according to any of claims 1-10, wherein both side walls of the tire mounting groove are provided with ribs extending from the side walls of the tire mounting groove to the bottom wall of the tire mounting groove and arranged perpendicular to the circumferential direction of the tire mounting groove.

12. An in-wheel motor, comprising:

a motor hub according to any one of claims 1-11;

a tire mounted to the tire mounting groove.

13. A vehicle characterized by comprising an in-wheel motor according to claim 12.