Shell for electric bicycle hub with built-in transmission

Abstract

The utility model discloses a transmission built-in type shell for an electric bicycle hub, which comprises a shell body, hub discs are respectively arranged on the side surfaces of the shell body close to two pairs, a plurality of spoke holes are distributed on the hub discs in an array manner by taking the axis of the shell body as a circle center, and a quick disassembly and assembly structure is arranged at the open end of the shell body; the quick dismounting and mounting structure comprises a sealing structure used for being connected with the left side of the shell body and a fixing structure used for being connected with the sealing structure and the shell body. By means of the mode, the shell for the electric bicycle hub with the built-in speed changer is of a quick disassembly and assembly structure, maintenance can be convenient on the premise that the sealing performance of the shell is guaranteed, and the problems that a traditional hub with the built-in speed changer is complex to maintain and high in cost are solved.

Description

Technical Field

[0001] The utility model relates to the field of bicycles, in particular to a housing for a hub of an electric bicycle with a built-in transmission. Background Art

[0002] An internal derailleur hub is a bicycle component that integrates the shifting mechanism inside the hub. This structure makes shifting easier while also improving the overall aesthetics and durability.

[0003] The internal derailleur hub achieves speed changes through an internal gear system. Users can control the speed changes by shifting the lever or rotating the handle without adjusting the chain position like an external derailleur system. It usually provides multiple gear ratio options, allowing riders to choose according to different riding conditions (such as climbing, flat roads, wind resistance, etc.).

[0004] Because the gear system is sealed inside the hub and less exposed to the external environment, it is more resistant to dust and water and requires relatively less maintenance. However, once the built-in transmission fails, the hub needs to be disassembled for repair, which is more complicated and expensive to repair. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a housing for an electric bicycle hub with a built-in transmission, which can be easily maintained under the premise of ensuring the sealing performance of the housing.

[0006] To solve the above technical problems, the present invention adopts a technical solution: providing a hub housing for an electric bicycle with an internal transmission, comprising a housing body, wherein two pairs of hub discs are respectively provided on the side of the housing body, and a plurality of spoke holes are distributed in an array on the hub disc with the axis of the housing body as the center. A quick disassembly structure is installed at the open end of the housing body;

[0007] The quick disassembly and assembly structure includes a sealing structure for connecting with the left side of the shell body and a fixing structure for connecting the sealing structure with the shell body.

[0008] In a preferred embodiment of the present invention, the sealing structure includes an end cover, which is matched with the left side of the shell body. An extension section is provided on the right side of the end cover, and the extension section extends into the left side of the shell body.

[0009] In a preferred embodiment of the present invention, the fixing structure includes a locking ring, a locking hole and a locking groove, the locking hole is opened on the end cover, the locking groove is opened on the left side of the shell body, the locking hole corresponds to the locking groove, the locking ring passes through the locking hole and is connected to the locking groove, and the locking ring is threadedly connected to the locking hole and the locking groove.

[0010] In a preferred embodiment of the present invention, when the locking ring contacts the bottom of the locking groove, its top is higher than the left side surface of the end cover, and a rubber layer is provided on the outside of the higher part.

[0011] In a preferred embodiment of the present invention, the housing body and the end cover form an inner cavity, and a transmission is installed in the inner cavity.

[0012] In a preferred embodiment of the present invention, a rotating shaft passes through the end cover and the shell body, and a sprocket is installed on the rotating shaft at the end opposite to the quick disassembly structure. The sprocket is connected to the right end of the shell body through a bearing.

[0013] The beneficial effects of the utility model are as follows: the utility model provides a shell for an electric bicycle hub with a built-in transmission, which adopts a quick disassembly and assembly structure, can be easily repaired while ensuring the sealing of the shell, and solves the problem of complex and high cost maintenance of traditional hubs with built-in transmissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a sectional view of the main view of a housing for an electric bicycle hub with a built-in transmission.

[0015] The components in the accompanying drawings are marked as follows: 1. Shell body; 2. End cover; 3. Hub disc; 4. Sprocket; 5. Locking ring; 6. Locking hole; 7. Locking groove; 8. Rubber layer; 9. Rotating shaft; 10. Inner cavity. DETAILED DESCRIPTION

[0016] The preferred embodiments of the present invention are described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0017] according to Figure 1 A shell for an electric bicycle hub with an internal transmission includes a shell body 1. A hub plate 3 is provided on the side of the shell body 1 near two pairs of spoke holes. The hub plate 3 is arranged in an array with a plurality of spoke holes distributed around the axis of the shell body 1. A quick disassembly structure is installed at the open end of the shell body 1, which can facilitate maintenance while ensuring the sealing of the shell, solving the problem of complex and high cost maintenance of traditional hubs with internal transmissions.

[0018] The quick disassembly structure includes a sealing structure for connecting with the left side of the housing body 1 and a fixing structure for connecting the sealing structure with the housing body 1 .

[0019] The sealing structure includes an end cover 2, which matches the left side of the shell body 1. An extension section is provided on the right side of the end cover 2, which extends into the left side of the shell body 1. The extension section plays a role in positioning during installation.

[0020] The combination of the end cover 2 and the shell body 1 makes maintenance faster and more convenient.

[0021] The fixing structure includes a locking ring 5, a locking hole 6 and a locking groove 7. The locking hole 6 is provided on the end cover 2, and the locking groove 7 is provided on the left side of the shell body 1. The locking hole 6 corresponds to the locking groove 7. The locking ring 5 passes through the locking hole 6 and is connected to the locking groove 7. The locking ring 5 is threadedly connected to the locking hole 6 and the locking groove 7. The locking ring 5 cooperates with the locking hole 6 and the locking groove 7, so that the end cover 2 and the shell body 1 can be quickly disassembled and assembled.

[0022] When the locking ring 5 contacts the bottom of the locking groove 7, its top is higher than the left surface of the end cover 2. A circle of rubber layer 8 is provided on the outside of the higher part, and the rubber layer 8 facilitates the screwing in and out of the locking ring 5.

[0023] The housing body 1 and the end cover 2 form an inner cavity 10, in which a transmission is installed, so that the transmission is less exposed to the external environment and has stronger resistance to dust and water. The sprocket 4 cooperates with the chain to effectively transmit the force applied by the rider through the pedals to move the bicycle forward.

[0024] A rotating shaft 9 passes through the end cover 2 and the housing body 1 , and a sprocket 4 is installed on the rotating shaft 9 at the end opposite to the quick disassembly structure. The sprocket 4 is connected to the right end of the housing body 1 through a bearing.

[0025] Compared with the existing technology, the utility model provides a shell for an electric bicycle hub with an internal transmission. The shell adopts a quick disassembly and assembly structure, which can be easily repaired while ensuring the sealing of the shell, solving the problem of complex and high cost maintenance of traditional hubs with internal transmissions.

[0026] In the description of the present invention, it should be noted that the components are all universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or through conventional test methods. The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0027] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hub housing for an electric bicycle with an internal transmission, comprising a housing body, wherein two pairs of hub plates are provided on the sides of the housing body, and a plurality of spoke holes are arranged in an array around the axis of the housing body, wherein: The open end of the housing body is equipped with a quick disassembly structure; The quick disassembly and assembly structure includes a sealing structure for connecting with the left side of the shell body and a fixing structure for connecting the sealing structure with the shell body.

2. A hub housing for an electric bicycle with an internal transmission according to claim 1, characterized in that: The sealing structure includes an end cover, which is matched with the left side of the shell body. An extension section is provided on the right side of the end cover, and the extension section extends into the left side of the shell body.

3. A hub housing for an electric bicycle with an internal transmission according to claim 2, characterized in that: The fixing structure includes a locking ring, a locking hole and a locking groove. The locking hole is opened on the end cover, and the locking groove is opened on the left side of the shell body. The locking hole corresponds to the locking groove. The locking ring passes through the locking hole and is connected to the locking groove. The locking ring is threadedly connected to the locking hole and the locking groove.

4. A hub housing for an electric bicycle with an internal transmission according to claim 3, characterized in that: When the locking ring contacts the bottom of the locking groove, the top of the locking ring is higher than the left side surface of the end cover, and a circle of rubber layer is provided on the outside of the higher part.

5. The hub housing for an electric bicycle with an internal transmission according to claim 2, characterized in that: The housing body and the end cover form an inner cavity, and a transmission is installed in the inner cavity.

6. A hub housing for an electric bicycle with an internal transmission according to claim 2, characterized in that: A rotating shaft passes through the end cover and the shell body, and a sprocket is installed on the end of the rotating shaft opposite to the quick disassembly structure. The sprocket is connected to the right end of the shell body through a bearing.

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