CN218920122U

CN218920122U - Hub motor

Info

Publication number: CN218920122U
Application number: CN202223029770.8U
Authority: CN
Inventors: 张以红; 严安照
Original assignee: Zhejiang Wangdefu Motor Co ltd
Current assignee: Zhejiang Wangdefu Motor Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-04-25
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a hub motor, which comprises a wheel shaft, a hub cover, a side cover and a wheel rim, wherein the hub cover, the side cover and the wheel rim are fixedly arranged and are rotatably arranged with the wheel shaft, an oil seal is arranged on the side cover, a sheath is arranged on the wheel shaft, the inner periphery of the sheath is abutted against the outer periphery of the wheel shaft, the wheel shaft comprises a channel, a wire is penetrated in the channel, and a rubber plug is sleeved on the outer periphery of the wire. The outer side of the oil seal is abutted with the sheath, the oil seal is protected through the sheath, the directly exposed outside of the oil seal is avoided, and the service life of the oil seal is prolonged; the gap between the oil seal and the wheel shaft is well sealed through the arrangement of the sheath, so that the situation that substances such as external rainwater enter the wheel hub motor from the gap between the oil seal and the wheel shaft is effectively avoided; the periphery of wire is provided with the rubber buffer, through wire and rubber buffer cooperation shutoff passageway, the effectual circumstances of avoiding outside substances such as rainwater to get into hub motor from passageway department.

Description

Hub motor

Technical Field

The utility model relates to the technical field of motors, in particular to a hub motor.

Background

As shown in fig. 1, a hub cover 2, a side cover 3 and a rim 4 of a new national standard battery car are fixedly installed together and are rotatably arranged with a wheel axle 1, oil seals 7 are arranged at two ends of the wheel axle 1, and as the oil seals 7 are partially exposed outside, the aging of the oil seals 7 is easily accelerated under the factors of sun insolation, sediment erosion and the like, so that external rainwater and other substances can enter the inside of a hub motor from between the oil seals 7 and the wheel axle 1, and the hub motor is damaged; and the passageway 13 that supplies wire 6 to pass has been seted up to shaft 1, and wire 6 stretches into the inside of in-wheel motor through passageway 13, in order to guarantee the inside leakproofness of in-wheel motor, usually beat round colloid 9 in the periphery of wire 6, but along with in-wheel motor's use, colloid 9 receives ageing, deformation, even drops of reasons such as sun insolation easily, influences the inside leakproofness of in-wheel motor for outside rainwater etc. get into the inside of in-wheel motor from passageway 13 easily, and then reduced in-wheel motor's life.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a hub motor.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a hub motor, includes shaft, hub cap, limit lid, wheel rim fixed mounting and rotate with the shaft and set up, the oil blanket is installed to the limit lid, the oil blanket sets up the one end of keeping away from the hub cap at the limit lid, the periphery butt at the hub cap of oil blanket, the periphery laminating of oil blanket is in the periphery of shaft, the sheath is installed to the shaft, the periphery butt at the periphery of shaft of sheath, the outside of oil blanket sets up with the inboard laminating of sheath mutually, the shaft includes the passageway, the passageway link up the shaft setting, hub cap, limit lid, wheel rim surround and form the cavity, the passageway inwards extends to the cavity, wear to be equipped with the wire in the passageway, the one end of wire extends to in the cavity, the other end outwards extends of wire, the periphery cover of wire is equipped with the rubber buffer, the periphery butt of rubber buffer is at the lateral wall of passageway.

The side cover comprises a second step, the second step is located at the inner periphery of the side cover and extends outwards, and the outer periphery of the oil seal is abutted against the second step.

The outer side of the sheath does not exceed the second step, and the periphery of the sheath is arranged at intervals with the second step.

The sheath is made of nitrile rubber.

An inner cavity II is formed between the oil seal and the sheath, and lubricating grease is placed in the inner cavity II.

The oil seal is provided with a first table top, the inner side of the sheath is attached to the first table top, the first table top comprises a plurality of concave grooves, the grooves are concavely arranged towards the side far away from the sheath, and the grooves are communicated with the inner cavity.

The sheath comprises a second table top, the second table top and the first table top are mutually attached, the width L1 of the second table top is smaller than the width L2 of the groove, the upper end of the second table top is flush with the upper end of the groove, and the lower end of the second table top is higher than the lower end of the groove.

The number of the channels is one, the outer ends of the channels are positioned on the outer side of the sheath, and the rubber plugs are positioned between the two ends of the channels.

The rubber stopper is wholly in the ring, the external diameter of rubber stopper one end is less than the internal diameter of passageway, the external diameter of rubber stopper other end is greater than the internal diameter of passageway.

The inclination angle alpha of the outer side face of the rubber plug is 3-6 degrees, and the outer diameter of the rubber plug facing the cavity end is smaller than the outer diameter of the rubber plug away from the cavity end.

The beneficial effects of the utility model are as follows:

1. through setting up the oil blanket between limit lid and shaft, the periphery butt at the limit lid and along with the rotation of limit lid, the inner periphery laminating of oil blanket is at the shaft, and the outside of oil blanket does not surpass the limit lid, and the outside butt of oil blanket has the sheath, plays the effect of protection to the oil blanket through the sheath, avoids the outside that the oil blanket directly exposes, has increased the life of oil blanket; the gap between the oil seal and the wheel shaft is well sealed through the arrangement of the sheath, so that the situation that substances such as external rainwater enter the wheel hub motor from the gap between the oil seal and the wheel shaft is effectively avoided;

2. the periphery of wire is provided with the rubber buffer, through wire and rubber buffer cooperation shutoff passageway, the effectual outside rainwater etc. of having avoided gets into wheel hub motor's condition from passageway department, has improved wheel hub motor's life.

Drawings

Fig. 1 is a schematic structural view of a conventional in-wheel motor;

FIG. 2 is a perspective view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the present utility model;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is an enlarged schematic view at B in FIG. 4;

FIG. 6 is a perspective view of an oil seal and a jacket according to the present utility model;

FIG. 7 is a schematic cross-sectional view of an oil seal and jacket of the present utility model;

FIG. 8 is a schematic view of the rubber stopper of the present utility model;

FIG. 9 is a schematic cross-sectional view of a rubber stopper of the present utility model.

In the figure: axle 1, bearing one 11, bearing two 12, passageway 13, cavity 14, hub cap 2, limit cap 3, inner chamber one 31, step one 32, step two 33, rim 4, flywheel 5, wire 6, rubber stopper 61, oil blanket 7, inner chamber two 71, mesa one 72, recess 73, sheath 8, mesa two 81, colloid 9.

Detailed Description

The utility model is further described with reference to the drawings and detailed description which follow:

in the description of the present specification, the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", etc., are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or unit referred to must have a specific direction, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

As shown in fig. 2 to 9, the hub motor comprises a hub 1, a hub cover 2, a side cover 3 and a rim 4, wherein the hub cover 2, the side cover 3 and the rim 4 are fixedly installed and are rotatably arranged with the hub 1, the hub cover 2 is installed on one side of the rim 4, the side cover 3 is installed on the other side of the rim 4, the hub 1 penetrates through the hub cover 2 and the side cover 3 and extends towards two ends, the hub 1 is provided with a first bearing 11 and a second bearing 12, the outer ring of the first bearing 11 is abutted to the hub cover 2, and the outer ring of the second bearing 12 is abutted to the side cover 3.

As shown in fig. 3 to 5, the side cover 3 is provided with an oil seal 7, the oil seal 7 is disposed at one end of the side cover 3 away from the hub cover 2, that is, the oil seal 7 is disposed at one side of the second bearing 12 away from the hub cover 2, the outer periphery of the oil seal 7 abuts against the hub cover 2, the inner periphery of the oil seal 7 abuts against the outer periphery of the wheel axle 1, specifically, the side cover 3 includes a second step 33, the second step 33 is located at the inner periphery of the side cover 3 and extends outwards, the outer periphery of the oil seal 7 abuts against the second step 33, and the oil seal 7 rotates synchronously with the rotation of the side cover 3.

As shown in fig. 3 and 4, an inner cavity one 31 is provided between the side cover 3 and the wheel axle 1, the second bearing 12 and the oil seal 7 are respectively provided at two ends of the inner cavity one 31, and lubricating oil is placed in the inner cavity one 31.

As shown in fig. 3 to 5, the wheel axle 1 is provided with the sheath 8, the sheath 8 is made of nitrile rubber, the sheath 8 is arranged on the periphery of the wheel axle 1, the outer side of the sheath 8 does not exceed the second step 33, namely, the oil seal 7 is ensured not to exceed the second step 33 all the time, the directly exposed outer part of the oil seal 7 is further avoided, and the service life of the oil seal 7 is prolonged.

As shown in fig. 3 to 7, the inner periphery of the sheath 8 is abutted against the outer periphery of the wheel axle 1, the sheath 8 is in interference fit with the wheel axle 1, the outer periphery of the sheath 8 is arranged at intervals of the second step 33, the outer side of the oil seal 7 is in fit with the inner side of the sheath 8, the oil seal 7 is protected by the sheath 8, a gap between the oil seal 7 and the wheel axle 1 is formed, and the situation that substances such as external rainwater enter the wheel hub motor from the gap between the oil seal 7 and the wheel axle 1 is effectively avoided, namely, impurities such as external dust are prevented from entering the wheel hub motor from the lip of the oil seal 7 by the sheath 8.

An inner cavity II 71 is arranged between the oil seal 7 and the sheath 8, lubricating grease is placed in the inner cavity II 71, and when the side cover 3 rotates to drive the oil seal 7 to rotate synchronously, the lubricating grease arranged in the inner cavity II 71 is used for reducing friction between the oil seal 7 and the sheath 8 during rotation, so that the service life of the oil seal 7 is prolonged.

And through setting up the lubricating grease in inner chamber two 71, even have impurity such as dust to get into from the clearance department that oil blanket 7 and sheath 8 laminate, also can be adhered by the lubricating grease, and then guarantee that impurity such as dust can not get into in-wheel motor's inside from the lip department of oil blanket 7.

As shown in fig. 3 to 7, the oil seal 7 is provided with a first table surface 72, the inner side of the sheath 8 is attached to the first table surface 72, the first table surface 72 includes a plurality of concave grooves 73, the grooves 73 are concavely arranged towards the side far away from the sheath 8, and the arrangement of the grooves 73 reduces the contact area between the oil seal 7 and the sheath 8, namely reduces the friction between the oil seal 7 and the sheath 8 when rotating.

As shown in fig. 5 to 7, the groove 73 is communicated with the second cavity 71, specifically, the sheath 8 includes a second table 81, the second table 81 and the first table 72 are mutually attached, the width L1 of the second table 81 is smaller than the width L2 of the groove 73, the upper end of the second table 81 is flush with the upper end of the groove 73, the lower end of the second table 81 is higher than the lower end of the groove 73, that is, grease in the second cavity 71 can flow into the groove 73 from the lower end of the groove 73, and as the oil seal 7 rotates, the grease can lubricate the second table 81 and the first table 72 to reduce friction with the sheath 8 when the oil seal 7 rotates.

As shown in fig. 3 to 5, the wheel axle 1 includes a number of channels 13, the channels 13 are one, the channels 13 are disposed through the wheel axle 1, the hub cover 2, the side cover 3, and the rim 4 surround to form a cavity 14, the channels 13 extend inward to the cavity 14, and an outer end of the channels 13 is located outside the jacket 8.

The guide wire 6 is arranged in the channel 13 in a penetrating way, one end of the guide wire 6 extends into the cavity 14, the other end of the guide wire 6 extends outwards, and the guide wire 6 provides power for the hub motor.

As shown in fig. 2 to 5, 8 and 9, the outer circumference of the wire 6 is covered with a rubber stopper 61, the rubber stopper 61 is in a circular ring shape as a whole, the rubber stopper 61 is positioned between two ends of the channel 13, the inner circumference of the rubber stopper 61 is abutted against the outer circumference of the wire 6, and the outer circumference of the rubber stopper 61 is abutted against the side wall of the channel 13.

The outer diameter of one end of the rubber stopper 61 is smaller than the inner diameter of the channel 13, the outer diameter of the other end of the rubber stopper 61 is larger than the inner diameter of the channel 13, and the inclination angle alpha of the outer side surface of the rubber stopper 61 is 3-6 degrees.

The outer diameter of the rubber stopper 61 toward the end of the chamber 14 is smaller than the outer diameter of the rubber stopper 61 away from the end of the chamber 14, i.e., the outer diameter of the rubber stopper 61 gradually increases as it moves away from the chamber 14.

Along with the rubber plug 61 entering the channel 13, the periphery of the rubber plug 61 is abutted against the channel 13, and the channel 13 is blocked by the mutual cooperation of the lead 6 and the rubber plug 61, so that the situation that substances such as external rainwater enter the hub motor from the channel 13 is effectively avoided, and the service life of the hub motor is prolonged.

The side cover 3 includes a first step 32, the first step 32 is located at the periphery of the side cover 3 and extends inwards, the flywheel 5 is fixedly mounted on the first step 32, and a chain is mounted on the flywheel 5, which is not described in detail in the prior art.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a wheel hub motor, includes shaft (1), hub cap (2), limit lid (3), wheel rim (4) fixed mounting and rotate setting with shaft (1), its characterized in that: the side cover (3) is installed oil blanket (7), oil blanket (7) set up the one end of keeping away from hub cover (2) at side cover (3), the periphery butt of oil blanket (7) is at hub cover (2), the periphery of shaft (1) is laminated to the inner periphery of oil blanket (7), sheath (8) are installed to shaft (1), the periphery of shaft (1) is laminated with the inboard of sheath (8) in the outer periphery of sheath (8), shaft (1) include passageway (13), passageway (13) link up shaft (1) setting, hub cover (2), side cover (3), rim (4) surround and form cavity (14), passageway (13) inwards extend to cavity (14), wear to be equipped with wire (6) in passageway (13), the one end of wire (6) extends to in cavity (14), the other end of wire (6) outwards extends, wire (6) periphery cover is equipped with passageway (13), the periphery of wire (6) is equipped with rubber stopper (61) and is in the lateral wall of rubber stopper (61) of passageway (61).

2. A hub motor according to claim 1, wherein: the side cover (3) comprises a second step (33), the second step (33) is located on the inner periphery of the side cover (3) and extends outwards, and the outer periphery of the oil seal (7) abuts against the second step (33).

3. A hub motor according to claim 2, wherein: the outer side of the sheath (8) does not exceed the second step (33), and the periphery of the sheath (8) is arranged at intervals with the second step (33).

4. A hub motor according to claim 1, wherein: the sheath (8) is made of nitrile rubber.

5. A hub motor according to claim 1, wherein: an inner cavity II (71) is arranged between the oil seal (7) and the sheath (8), and lubricating grease is placed in the inner cavity II (71).

6. A hub motor as set forth in claim 5, wherein: the oil seal (7) is provided with a first table surface (72), the inner side of the sheath (8) is attached to the first table surface (72), the first table surface (72) comprises a plurality of concave grooves (73), the grooves (73) are concavely arranged towards the side far away from the sheath (8), and the grooves (73) are communicated with a second inner cavity (71).

7. The in-wheel motor of claim 6, wherein: the sheath (8) comprises a second table top (81), the second table top (81) and the first table top (72) are mutually attached, the width L1 of the second table top (81) is smaller than the width L2 of the groove (73), the upper end of the second table top (81) is flush with the upper end of the groove (73), and the lower end of the second table top (81) is higher than the lower end of the groove (73).

8. A hub motor according to claim 1, wherein: the number of the channels (13) is one, the outer ends of the channels (13) are positioned on the outer side of the sheath (8), and the rubber plugs (61) are positioned between the two ends of the channels (13).

9. A hub motor according to claim 1, wherein: the rubber plug (61) is integrally in a circular ring shape, the outer diameter of one end of the rubber plug (61) is smaller than the inner diameter of the channel (13), and the outer diameter of the other end of the rubber plug (61) is larger than the inner diameter of the channel (13).

10. A hub motor according to claim 9, wherein: the inclination angle alpha of the outer side surface of the rubber plug (61) is 3-6 degrees, and the outer diameter of the rubber plug (61) towards the end of the cavity (14) is smaller than the outer diameter of the rubber plug (61) away from the end of the cavity (14).