Lightweight hub of electric bicycle with hollow spoke structure

Abstract

The utility model discloses a light weight wheel hub of hollow spoke structure's electric bicycle, including the wheel hub outer ring of aluminium alloy material, the wheel hub inner ring that is arranged with the concentric distribution of wheel hub outer ring inside is provided with, fixed mounting has the main spoke between wheel hub outer ring and wheel hub inner ring, and fixed mounting has the auxiliary spoke of the bent shape structure of main spoke side surface, and the mounting hole for installing bearing is seted up in wheel hub inner ring middle position, the lightening hole for alleviating overall weight is seted up in main spoke inside middle position, and the lightening groove is seted up in main spoke side surface. This light weight wheel hub of hollow spoke structure's electric bicycle, and the wheel hub is divided into wheel hub outer ring and wheel hub inner ring, and wheel hub outer ring and wheel hub inner ring utilize main spoke and connect, and wheel hub outer ring, wheel hub inner ring and main spoke all set up as aluminium alloy material, and cooperate the lightening hole and lightening groove that seted up in main spoke can reduce the weight of wheel hub overall, realize the light weight of wheel hub overall.

Description

Technical Field

[0001] This utility model relates to the field of electric bicycle wheel hub technology, specifically a lightweight electric bicycle wheel hub with a hollow spoke structure. Background Technology

[0002] The wheel hub of an electric bicycle is the core component of the electric drive system. It integrates the motor, reduction mechanism, braking system, etc., and directly affects the performance, efficiency and reliability of the vehicle.

[0003] In the prior art, Chinese patent application number CN202011612635.9 discloses an electric vehicle wheel hub. The wheel hub body is composed of an outer ring and an inner ring on one side of the outer ring. A return spring is fixedly connected to the surface of the inner ring. Two symmetrical connecting blocks are fixedly connected to the outer side of the inner ring. A spring tube is fixedly connected to one side of the connecting block. A pull rod is inserted inside the spring tube. The bottom end of the pull rod is a smooth bevel. A warning sticker is provided on one side of the inner ring. A base plate is fixedly connected to the side of the warning sticker near the return spring. The base plate abuts against the bottom end of the pull rod. A limit stop ring is fixedly connected to the outer side of the bottom end of the pull rod. A limit spring is sleeved on the outer side of the pull rod.

[0004] Based on the above information, it can be seen that the wheel hub in the existing technology needs to be made of metal to support the weight of the electric bicycle. However, in actual use, the overall weight of metal materials is relatively large, which affects the overall range of the electric bicycle. Summary of the Invention

[0005] The purpose of this invention is to provide a lightweight wheel hub for electric bicycles with a hollow spoke structure, so as to solve the problem mentioned in the background art that the heavy weight of the wheel hub affects the vehicle's range during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lightweight wheel hub for electric bicycles with a hollow spoke structure, comprising an outer ring of aluminum alloy, an inner ring of the wheel hub concentrically distributed on the inner side of the outer ring, a main spoke fixedly installed between the outer ring and the inner ring, and auxiliary spokes with a bent structure fixedly installed on the side of the main spoke, and a mounting hole for mounting a bearing is opened in the middle of the inner ring, a weight-reducing hole for reducing the overall weight is opened in the middle of the main spoke, and a weight-reducing groove is opened on the side of the main spoke.

[0007] Preferably, there are six main spokes arranged at equal intervals, and the auxiliary spokes are distributed in a cross-shaped structure with the main spokes.

[0008] Preferably, reinforcing fins are fixedly installed inside the weight reduction groove, and each group of reinforcing fins has two fins.

[0009] Preferably, the outer surface of the inner ring of the wheel hub is fixedly equipped with heat dissipation fins that are evenly distributed at equal intervals, and the windward side of the heat dissipation fins is set with an inclined structure.

[0010] Preferably, the outer surface of the wheel hub is provided with a sealing strip and a positioning strip, and both the sealing strip and the positioning strip are integrally stamped with the outer surface of the wheel hub.

[0011] Preferably, the outer rim of the wheel hub is provided with sound-absorbing cotton, and the position of the sound-absorbing cotton corresponds to that of the positioning strip.

[0012] Preferably, the sound-absorbing cotton corresponds to the friction layer disposed on the outer surface of the outer ring of the wheel hub, and the surface of the friction layer is rough.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the lightweight wheel hub of the electric bicycle with hollow spoke structure adopts a novel structural design, the specific details of which are as follows: 1. The wheel hub consists of an outer ring and an inner ring, which are connected by main spokes. The outer ring, inner ring, and main spokes are all made of aluminum alloy. The weight reduction holes and grooves in the main spokes can reduce the overall weight of the wheel hub and achieve overall lightweighting. Furthermore, auxiliary spokes with a bent structure are fixedly installed on the side of the main spokes. The auxiliary spokes work in conjunction with the main spokes to improve the overall strength of the wheel hub. Additionally, heat dissipation fins are arranged at equal intervals on the outer surface of the inner ring of the wheel hub. The heat dissipation fins increase the contact area with the air, thereby improving the heat dissipation effect.

[0014] 2. Sound-absorbing cotton is installed on the outer side of the wheel hub. The sound-absorbing cotton absorbs the noise generated by the tire position when the electric bicycle is running, thereby achieving the purpose of noise reduction. In addition, a rough friction layer is set on the outer surface of the wheel hub. The friction layer can improve the adhesion between the sound-absorbing cotton and the wheel hub. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the main spokes and auxiliary spokes of this utility model; Figure 3 This is a schematic diagram of the main spoke structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the outer ring of the wheel hub of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the sound-absorbing cotton structure of this utility model.

[0016] In the diagram: 1. Outer ring of the hub; 2. Inner ring of the hub; 3. Main spokes; 4. Mounting holes; 5. Auxiliary spokes; 6. Weight reduction holes; 7. Weight reduction grooves; 8. Reinforcing fins; 9. Heat dissipation fins; 10. Sealing strip; 11. Sound-absorbing cotton; 12. Positioning strip; 13. Friction layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1-3 To achieve lightweighting of the wheel hub, this embodiment provides the following technical solution, specifically: an outer wheel hub 1 made of aluminum alloy, an inner wheel hub 2 concentrically distributed on the inner side of the outer wheel hub 1, a main spoke 3 fixedly installed between the outer wheel hub 1 and the inner wheel hub 2, and auxiliary spokes 5 with a bent structure fixedly installed on the side of the main spokes 3, and a mounting hole 4 for mounting a bearing is opened in the middle of the inner wheel hub 2, a weight reduction hole 6 for reducing the overall weight is opened in the middle of the main spokes 3, and a weight reduction groove 7 is opened on the side of the main spokes 3, six main spokes 3 are evenly spaced, and the auxiliary spokes 5 are distributed in a cross structure with the main spokes 3, and reinforcing fins 8 are fixedly installed inside the weight reduction grooves 7, with two fins in each group of reinforcing fins 8, and heat dissipation fins 9 evenly distributed at equal intervals are fixedly installed on the outer surface of the inner wheel hub 2, and the windward side of the heat dissipation fins 9 is set with an inclined structure.

[0019] The wheel hub consists of an outer ring 1 and an inner ring 2, which are connected by a main spoke 3. (The outer ring 1, inner ring 2, and main spoke 3 are all made of aluminum alloy, which has the characteristics of high strength and lightweight. Combined with the weight reduction holes 6 and weight reduction grooves 7 in the main spoke 3, the overall weight of the wheel hub can be reduced, achieving overall lightweighting.) Auxiliary spokes 5 with a bent structure are fixedly installed on the side of the main spoke 3. The auxiliary spokes 5 work together with the main spoke 3 to improve the overall strength of the wheel hub (at the same time, the weight reduction grooves 7 are equipped with reinforcing fins 8 to further increase the overall strength). Furthermore, the outer surface of the inner ring 2 is provided with heat dissipation fins 9 arranged at equal intervals. The heat dissipation fins 9 increase the contact area with air, thereby improving the heat dissipation effect.

[0020] Example 2: Please refer to Figures 4-6In order to reduce tire noise, this embodiment provides the following technical solution, which specifically discloses that: a sealing strip 10 and a positioning strip 12 are provided on the surface of the outer ring 1 of the wheel hub, and the sealing strip 10 and the positioning strip 12 are integrally stamped with the outer ring 1 of the wheel hub. A sound-absorbing cotton 11 is provided on the outside of the outer ring 1 of the wheel hub, and the position of the sound-absorbing cotton 11 corresponds to that of the positioning strip 12. The sound-absorbing cotton 11 corresponds to the friction layer 13 provided on the outer surface of the outer ring 1 of the wheel hub, and the surface of the friction layer 13 is rough.

[0021] A sound-absorbing cotton 11 is installed on the outer side of the outer ring 1 of the wheel hub. The sound-absorbing cotton 11 absorbs the noise generated by the tire position when the electric bicycle is in motion, thereby reducing tire noise. When the sound-absorbing cotton 11 is installed by adhesive, the positioning strip 12 is used to position it so that it corresponds to the position of the friction layer 13. The rough structure of the friction layer 13 improves the adhesion between it and the sound-absorbing cotton 11.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight wheel hub for an electric bicycle with a hollow spoke structure, comprising an outer wheel hub ring (1) made of aluminum alloy, wherein an inner wheel hub ring (2) is provided concentrically distributed on the inner side of the outer wheel hub ring (1), characterized in that: A main spoke (3) is fixedly installed between the outer ring (1) and the inner ring (2) of the hub, and an auxiliary spoke (5) with a bent structure is fixedly installed on the side of the main spoke (3), and a mounting hole (4) for mounting a bearing is opened in the middle of the inner ring (2). The main spoke (3) has a weight-reducing hole (6) in the middle of its interior to reduce the overall weight, and a weight-reducing groove (7) is provided on the side of the main spoke (3).

2. The lightweight wheel hub for electric bicycles with a hollowed-out spoke structure according to claim 1, characterized in that: The main spokes (3) are arranged in six equal intervals, and the auxiliary spokes (5) are distributed in a cross structure with the main spokes (3).

3. The hollow spoke structure's electric bicycle lightweight hub according to claim 1, characterized in that: The weight reduction groove (7) is fixedly installed with reinforcing fins (8), and each set of reinforcing fins (8) has two pieces.

4. The hollow-spoke-structured electric bicycle lightweight wheel hub according to claim 1, characterized in that: The outer surface of the inner ring (2) of the hub is fixedly equipped with heat dissipation fins (9) that are evenly distributed at equal intervals, and the windward side of the heat dissipation fins (9) is set as an inclined structure.

5. The hollow-spoke-structured electric bicycle lightweight wheel hub according to claim 1, characterized in that: The outer ring (1) of the wheel hub is provided with a sealing strip (10) and a positioning strip (12), and the sealing strip (10) and the positioning strip (12) are integrally stamped with the outer ring (1) of the wheel hub.

6. The hollow-spoke-structured electric bicycle lightweight wheel hub according to claim 5, characterized in that: The outer ring (1) of the wheel hub is provided with sound-absorbing cotton (11), and the position of the sound-absorbing cotton (11) corresponds to that of the positioning strip (12).

7. The hollow-spoke-structured electric bicycle lightweight wheel hub according to claim 6, characterized in that: The sound-absorbing cotton (11) corresponds to the friction layer (13) disposed on the outer surface of the outer ring (1) of the wheel hub, and the surface of the friction layer (13) is rough.

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