Hub structure of hub motor for electric vehicle

Abstract

The utility model relates to the technical field of electric vehicle parts, and discloses a wheel hub structure of a wheel hub motor for an electric vehicle, which comprises a wheel hub body and two protective assemblies, the protective assemblies are arranged on the inner side of the wheel hub body, and the protective assemblies are used for protecting a connecting structure between a vehicle body and the wheel hub body. The two sides of the outer portion of the hub body are each fixedly connected with two studs, the outer sides of the studs are in threaded connection with nuts, the two sides of the outer portion of the hub body are each provided with an assembling disc, and two shielding assemblies are arranged in each assembling disc. When the hub body rotates at a high speed, centrifugal force enables the protection pieces to be thrown out, one ends of the two protection pieces are attached to fill a gap in the inner side of the hub body, rainwater and impurities can be prevented from entering the inner side when a vehicle passes through a wading road section or rainy days, damage to internal parts is avoided, and a good protection effect is achieved; the tension of the tension springs enables the protection pieces to contract into the arc-shaped grooves, the inner side of the hub body is exposed, and internal heat dissipation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric vehicle parts technical field especially relates to a wheel hub structure of electric vehicle wheel hub motor. BACKGROUND

[0002] The wheel hub of the electric vehicle wheel hub motor is one of the key components of the electric vehicle. It not only supports the weight of the vehicle, but also combines with the tire to provide power for the vehicle. The wheel hub is usually made of high-strength metal material and has certain rigidity and durability. The wheel hub motor is directly installed inside the wheel hub, making the power transmission of the electric vehicle more direct and efficient. The design of the wheel hub needs to consider various factors such as strength, weight, heat dissipation performance, etc. At the same time, the wheel hub also needs to cooperate well with other parts of the vehicle to ensure the overall performance and safety of the electric vehicle.

[0003] In actual electric vehicle use scenarios, the wheel hub of the traditional electric vehicle wheel hub motor has some problems. First, when the vehicle passes through a water section or drives in the rain, water and impurities can easily enter the inside of the wheel hub. For example, when driving in the rain, rainwater can enter the inside of the wheel hub through the gap between the wheel hub and the tire or other openings, causing damage to the motor and other internal parts. This not only affects the performance and life of the electric vehicle, but also brings safety hazards. Secondly, during the driving process of the electric vehicle, the wheel hub motor works and generates heat. If it cannot be dissipated in time, it will cause the temperature of the motor to rise, affecting the performance and life of the motor, so the technical field proposes a wheel hub structure of the electric vehicle wheel hub motor to solve the above problems. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a wheel hub structure of the electric vehicle wheel hub motor, aiming at improving the problem that the wheel hub in the prior art is easily disturbed by other impurities or rainwater during use.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a wheel hub structure of the electric vehicle wheel hub motor, comprising a wheel hub body and two protection assemblies, the protection assembly is arranged on the inner side of the wheel hub body, the protection assembly is used for protecting the connecting structure between the vehicle body and the wheel hub body, the outer two sides of the wheel hub body are fixedly connected with two studs, the outer side of the stud is threadedly connected with a nut, the outer two sides of the wheel hub body are provided with an assembly disc, the inside of the assembly disc is provided with two shielding assemblies, the shielding assembly is used for the wheel hub body, and when in use, the structure inside the wheel hub body is protected;

[0006] The shielding assembly includes two protective sheets, outer sides of the protective sheets are fixedly connected with limiting blocks, the inside of the assembling disc is provided with two arc-shaped grooves, one side of the inner wall of the arc-shaped grooves is provided with a limiting groove, and the inside of the limiting groove is provided with a tension spring.

[0007] Further, the outer side of the limiting block is slidably connected with the inner side of the limiting groove, and the two ends of the tension spring are fixedly connected with the outer sides of the two limiting blocks.

[0008] Further, the outer side of the protective sheet is slidably connected with the inner side of the arc-shaped groove, and one end of the two protective sheets is attached.

[0009] Further, the inside of the assembling disc is provided with two assembling holes, and one end of the stud penetrates through the inside of the assembling hole and extends to the outside.

[0010] Further, the outer side of the assembling disc is attached with the outer side of the hub body, and the outer side of the nut is attached with the outer side of the assembling disc.

[0011] Further, the protective assembly includes a rubber ring, the rubber ring is arranged on the inner side of the assembling disc, and the outer side of the rubber ring is fixedly connected with two clamping blocks.

[0012] Further, the outer side of the clamping block is provided with a clamping groove, and the inner side of the assembling disc is provided with two mounting grooves.

[0013] Further, the inner side of the clamping block is attached with the outer side of the assembling disc, and the inner side of the clamping groove is attached with the inner side of the mounting groove.

[0014] The utility model has the advantages of the following:

[0015] 1、 in the utility model, when the hub body rotates at high speed, centrifugal force makes the protective sheet fly out, two protective sheets are attached at one end to fill the gap in the inner side of the hub body, can prevent rainwater and impurities from entering the inner side when the vehicle passes through the water section or in rainy days, avoid damaging the internal parts, play good protection effect, when parking, the tension spring tension makes the protective sheet shrink into the arc-shaped groove, expose the inner side of the hub body, help internal heat dissipation, ensure that the hub motor maintains good performance and stable operating temperature in different states.

[0016] 2、 in the utility model, when installing the rubber ring, pinch to deform, the clamping block is clamped in the inner side of the mounting groove, the rubber ring can be firmly assembled in the inner side of the assembling disc, when the hub body and other structural parts are assembled, the rubber ring can reduce friction loss, protect the structural parts, reduce wear and tear, prolong the service life of the structural parts and the hub structure, improve the durability of the hub body. DRAWINGS

[0017] Fig. 1A kind of hub structure of electric motor car wheel hub motor of the utility model discloses a perspective view of hub structure of electric motor car wheel hub motor;

[0018] Fig. 2 A kind of hub structure of electric motor car wheel hub motor of the utility model discloses the assembling disc structure schematic view of hub structure of electric motor car wheel hub motor;

[0019] Fig. 3 A kind of hub structure of electric motor car wheel hub motor of the utility model discloses the card block structure schematic view of hub structure of electric motor car wheel hub motor.

[0020] Legend:

[0021] 1, hub body;2, stud;3, nut;4, assembling disc;5, assembling hole;6, arc slot;7, protective sheet;8, limit block;9, limit slot;10, tension spring;11, rubber ring;12, card block;13, card slot;14, installation slot. Specific embodiments

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Reference Figs. 1-3The utility model provides an embodiment: a kind of hub structure of electric vehicle wheel hub motor, including hub body 1 and two protection components, two protection components are provided in the inside of hub body 1, these protection components are mainly used to protect the connecting structure between vehicle body and hub body 1, ensure the stability and security of connecting portion during vehicle driving, the outside both sides of hub body 1 are fixedly connected with two studs 2, stud 2 plays the important role of connection and fixed other components, the outside of stud 2 is threadedly connected with nut 3, by the tightening of nut 3, other components can be firmly fixed on hub body 1, the outside both sides of hub body 1 are provided with assembling disc 4, assembling disc 4 provides installation base for other components of hub body 1, and it plays the role of protecting the internal structure of hub body 1 to some extent, the inside of assembling disc 4 is provided with two shielding components, these shielding components play important protective role to structural member inside hub body 1 when hub body 1 is used, shielding component includes two protective sheets 7, protective sheet 7 is made of strong durable material, can effectively block the impurities and moisture of outside into the inside of hub body 1, the outside of protective sheet 7 is fixedly connected with limit block 8, two arc grooves 6 are set in the inside of assembling disc 4, the design of arc groove 6 makes protective sheet 7 can smoothly slide therein, limit slot 9 is set in the inner wall side of arc groove 6, limit slot 9 is used to accommodate limit block 8, and provides installation space for tension spring 10, limit slot 9 is provided with tension spring 10, the both ends of tension spring 10 are fixedly connected with the outside of two limit blocks 8, when protective sheet 7 slides in arc groove 6, tension spring 10 can provide pulling force or thrust, ensure that the movement of protective sheet 7 is stable and reliable, the outside of protective sheet 7 is slidably connected with the inside of arc groove 6, when the end of two protective sheets 7 is adhered, can form a tight barrier, effectively prevent the impurities of outside from entering the inside of hub body 1, two assembling holes 5 are set in the inside of assembling disc 4, one end of stud 2 penetrates the inside of assembling hole 5 and extends to outside, by the cooperation of stud 2 and nut 3, assembling disc 4 is firmly installed on hub body 1, the outside of assembling disc 4 is adhered with the outside of hub body 1, ensure the tightness and stability of installation, the outside of nut 3 is adhered with the outside of assembling disc 4, further enhance the firmness of connection.

[0024] Specifically, when assembling, the two assembly holes 5 on the assembly disc 4 are accurately aligned with the studs 2, allowing them to smoothly enter the assembly position, and then two nuts 3 are tightened on the outside of the studs 2 to ensure firm and stable connection. When the hub body 1 is in use and at high speed, the strong centrifugal force will act on the protective sheet 7, causing it to be quickly thrown out from the inside of the arc-shaped groove 6. In this way, one end of the two protective sheets 7 will be tightly attached together, effectively filling the gap on the inside of the hub body 1. This design can prevent rainwater from directly entering the inside of the hub body 1 when the vehicle passes through a waterlogged section or in rainy weather, and can also prevent other impurities from entering the inside of the hub body 1 during driving, thereby avoiding damage to the internal parts and providing good protection for the internal parts of the hub body 1. When the vehicle is parked, the tension of the tension spring 10 will cause the two protective sheets 7 to retract into the arc-shaped groove 6, exposing the inside of the hub body 1. This state helps to dissipate heat from the inside of the hub body 1, ensuring that the hub motor maintains good performance and stable operating temperature under different working conditions.

[0025] Referring to Figs. 1-3 The protective assembly includes a rubber ring 11 having good elasticity and wear resistance, which is arranged on the inside of the assembly disc 4 and can play a buffering and protective role. The outside of the rubber ring 11 is fixedly connected with two clamping blocks 12, which are used to fix the rubber ring 11 on the assembly disc 4. The outside of the clamping block 12 is provided with a clamping groove 13, and the inside of the assembly disc 4 is provided with two mounting grooves 14. The inside of the clamping block 12 is attached to the outside of the assembly disc 4, and the inside of the clamping groove 13 is attached to the inside of the mounting groove 14. In this way, the rubber ring 11 can be firmly assembled on the inside of the assembly disc 4.

[0026] Specifically, when installing the rubber ring 11, the rubber ring 11 can be deformed by hand, and then the two clamping blocks 12 are accurately clamped on the inside of the mounting groove 14. In this way, the rubber ring 11 can be firmly assembled on the inside of the assembly disc 4. When the hub body 1 is assembled with other structural parts, the rubber ring 11 can fully play its role, reducing direct friction loss between structural parts. This design can effectively protect the structural parts, reduce wear and tear, prolong the service life of the structural parts and the entire hub structure, and improve the reliability and durability of the hub motor.

[0027] Working principle: first, the two assembly holes 5 on the assembly disc 4 are aligned with the stud 2 into the assembly, and then two nuts 3 are tightened on the outside of the two nuts 3. When the hub body 1 is in use, it rotates at high speed, and the centrifugal force will throw the protective sheet 7 from the inside of the arc-shaped groove 6. Thus, one end of the two protective sheets 7 will adhere to fill the gap inside the hub body 1, preventing water from entering the inside of the hub body 1 when passing through the water section or in rainy weather, and preventing other impurities from entering the inside of the hub body 1 during driving to cause damage to the parts. It can protect the internal parts of the hub body 1, and when parking, the tension of the tension spring 10 makes the two protective sheets 7 shrink into the arc-shaped groove 6, exposing the inside of the hub body 1, which can help the internal heat dissipation of the hub body 1.

[0028] In addition, pinch the rubber ring 11 to deform it, then put two clamping blocks 12 in the inside of the installation groove 14 respectively, and then assemble the rubber ring 11 in the inside of the assembly disc 4, so that when the hub body 1 is assembled with other structural parts, the direct friction loss between the structural parts can be reduced, the structural parts can be protected, and the service life can be prolonged.

[0029] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A wheel hub structure of an in-wheel motor for an electric vehicle, comprising a wheel hub body (1) and two protection assemblies, characterized in that: The protection assembly is arranged on the inner side of the hub body (1), and is used for protecting the connecting structure between the vehicle body and the hub body (1). The outer sides of the hub body (1) are fixedly connected with two studs (2). The outer sides of the studs (2) are threadedly connected with nuts (3). The outer sides of the hub body (1) are provided with assembling discs (4). The interiors of the assembling discs (4) are provided with two shielding assemblies. The shielding assemblies are used for the hub body (1). When in use, the structure inside the hub body (1) is protected. The shielding assembly comprises two protective sheets (7). The outer sides of the protective sheets (7) are fixedly connected with limiting blocks (8). The interiors of the assembling discs (4) are provided with two arc-shaped grooves (6). The inner walls of the arc-shaped grooves (6) are provided with limiting grooves (9) on one side. The interiors of the limiting grooves (9) are provided with pull springs (10).

2. The wheel hub structure of the in-wheel motor for an electric vehicle according to claim 1, characterized by: The outer sides of the limiting blocks (8) are slidably connected with the interiors of the limiting grooves (9). The two ends of the pull springs (10) are fixedly connected with the outer sides of the two limiting blocks (8), respectively.

3. The wheel hub structure of the in-wheel motor for electric vehicles according to claim 2, characterized by: The outer sides of the protective sheets (7) are slidably connected with the interiors of the arc-shaped grooves (6). The two protective sheets (7) are abutted at one end.

4. The wheel hub structure of the in-wheel motor for electric vehicles according to claim 3, characterized by: The interiors of the assembling discs (4) are provided with two assembling holes (5). The one ends of the studs (2) penetrate through the interiors of the assembling holes (5) and extend to the outside.

5. The wheel hub structure of the in-wheel motor for electric vehicles according to claim 4, characterized by: The outer side of the assembling disc (4) is abutted with the outer side of the hub body (1). The outer side of the nut (3) is abutted with the outer side of the assembling disc (4).

6. The wheel hub structure of the in-wheel motor for electric vehicles according to claim 1, characterized by: The protection assembly comprises rubber rings (11). The rubber rings (11) are arranged on the inner sides of the assembling discs (4). The outer sides of the rubber rings (11) are fixedly connected with two clamping blocks (12).

7. The wheel hub structure of the in-wheel motor for electric vehicles according to claim 6, characterized by: The outer sides of the clamping blocks (12) are provided with clamping grooves (13). The interiors of the assembling discs (4) are provided with two mounting grooves (14).

8. The wheel hub structure of the in-wheel motor for electric vehicles according to claim 7, characterized by: The inner sides of the clamping blocks (12) are abutted with the outer sides of the assembling discs (4). The inner sides of the clamping grooves (13) are abutted with the inner sides of the mounting grooves (14).

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