Combined shell for built-in hub of transmission

Abstract

The utility model discloses a transmission built-in hub combination shell which comprises a shell body, a chain wheel is installed on the right side of the shell body, the chain wheel is connected with the shell body through a bearing, a rotating shaft sequentially penetrates through the shell body and the chain wheel from left to right, and the shell body is of a combination structure. The combined structure comprises a shell structure used for forming the shell body and a reinforcing structure used for fixing the shell structure. By means of the mode, the combined shell for the built-in hub of the transmission is of a combined structure, maintenance can be more rapid and convenient, assembly and disassembly can be conducted without external tools, and the problem that the cost is high when a traditional built-in hub of the transmission is maintained is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle field especially use a combination casing of speed changer built -in type hub. BACKGROUND

[0002] The built -in speed changer electric bicycle hub has a set of complicated gear system, can change the gear ratio of riding through rotating handle or pole in the process of riding, allows the rider to shift at any time of riding, does not need to stop down or slow down.

[0003] Because the speed changer is built in the hub, the speed changer is stronger to dust and water resistance, avoids pollution, thereby plays good protection function, improves the service life.

[0004] But also because the speed changer sets up in the hub, when the speed changer breaks down, repairs more complex, needs to disassemble the hub, thereby greatly increases the maintenance cost. UTILITY MODEL CONTENTS

[0005] The utility model mainly solves the technical problem to provide a combination casing for speed changer built -in type hub, can make the maintenance more quick and convenient.

[0006] In order to solve the above technical problem, one of the technical schemes of the utility model is to provide a combination casing for speed changer built -in type hub, including the shell body, the chain wheel is installed on the right side of the shell body, the chain wheel is connected with the shell body through the bearing, and a rotating shaft penetrates the shell body and the chain wheel from left to right in turn, the shell body adopts the combined structure.

[0007] The combined structure includes a shell structure for composing the shell body and a reinforcing structure for fixing the shell structure.

[0008] In a preferred embodiment of the utility model, the shell structure includes a left cylinder body and a right cylinder body, an inner groove is formed in the left cylinder body and the right cylinder body, and the two inner grooves form an inner cavity for installing the speed changer after the left cylinder body and the right cylinder body are connected through the connecting structure.

[0009] In a preferred embodiment of the utility model, the connecting structure includes a connecting ring and a connecting groove, the connecting ring is installed on the connecting side of the left cylinder body and the right cylinder body, the connecting groove is formed on the connecting side of the right cylinder body and the left cylinder body, and external threads and internal threads are respectively arranged on the connecting ring and the connecting groove.

[0010] In a preferred embodiment of the utility model, the reinforcing structure includes a reinforcing cylinder matched with the shell body, the reinforcing cylinder is installed on the outer wall of the shell body, the inner wall of the reinforcing cylinder is equipped with a plurality of sliding strips, and the sliding strips are matched with the sliding grooves opened on the outer wall of the shell body.

[0011] In a preferred embodiment of the utility model, the left end of the sliding strip extends to the left side of the reinforcing cylinder, a positioning groove is opened between the right end of the sliding strip and the right side of the reinforcing cylinder, a positioning column is installed on the position corresponding to the positioning groove on the outer side of the shell body, and the positioning column is connected with the bottom of the mounting groove of the shell body through a spring.

[0012] In a preferred embodiment of the utility model, the outer wall of the reinforcing cylinder is equipped with a flower drum disc near two ends respectively, and a plurality of spoke holes are arrayed on the flower drum disc with the axis of the reinforcing cylinder as the center.

[0013] The utility model discloses a kind of combined shell for built-in type flower drum of transmission, the shell adopts combined structure, can make it more quickly and conveniently when maintaining, can be disassembled without external tool, solve the problem of high cost when maintaining traditional built-in type flower drum of transmission. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a kind of combined shell main view for built-in type flower drum of transmission.

[0015] Figure 2 It is Figure 1 A local enlarged view of place.

[0016] The marks of components in the drawings are as follows: 1, shell body;2, reinforcing cylinder;3, flower drum disc;4, chain wheel;5, sliding strip;6, sliding groove;7, positioning groove;8, positioning column;9, spring;10, mounting groove;11, rotating shaft;12, inner cavity. DETAILED DESCRIPTION

[0017] The preferred embodiment of the utility model is described in detail below, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.

[0018] According to Figure 1 And Figure 2The utility model provides a kind of combined shell for built-in type hub of transmission, including shell body 1, chain wheel 4 is installed on the right side of the shell body 1, the chain wheel 4 is connected with the shell body 1 by bearing, a rotating shaft 11 is sequentially penetrated from left to right the shell body 1 and the chain wheel 4, the shell body 1 adopts combined structure, can make it more quickly and conveniently when maintaining, can be disassembled without external tool, solve the problem of high cost when traditional built-in type hub of transmission is maintained.

[0019] The combined structure includes a shell structure for composing the shell body 1 and a reinforcing structure for fixing the shell structure.

[0020] The shell structure includes a left cylinder and a right cylinder, the left cylinder and the right cylinder are provided with an inner groove, the two inner grooves form an inner cavity 12 for installing a transmission after the left cylinder and the right cylinder are connected by a connecting structure, and the structure of the inner cavity 12 changes according to the actual structure of the transmission, so the structures of the two inner grooves are not necessarily the same.

[0021] The connecting structure includes a connecting ring and a connecting groove, the connecting ring is installed on the left cylinder and connected to the right cylinder, the connecting groove is provided on the right cylinder and connected to the left cylinder, external threads and internal threads are respectively arranged on the connecting ring and the connecting groove, the left cylinder and the right cylinder form the shell body 1 by the cooperation of the connecting ring and the connecting groove.

[0022] The reinforcing structure includes a reinforcing cylinder 2 matched with the shell body 1, the reinforcing cylinder 2 is installed on the outer wall of the shell body 1, a plurality of sliding strips 5 are arranged on the inner wall of the reinforcing cylinder 2, the sliding strips 5 are matched with sliding grooves 6 provided on the outer wall of the shell body 1, and the reinforcing cylinder 2 connects the left cylinder and the right cylinder more firmly by the cooperation of the sliding strips 5 and the sliding grooves 6.

[0023] The left end of the sliding strip 5 extends to the left side of the reinforcing cylinder 2, a positioning groove 7 is provided between the right end of the sliding strip 5 and the right side of the reinforcing cylinder 2, a positioning column 8 is installed on the outer side of the shell body 1 and corresponds to the positioning groove 7, and the positioning column 8 is connected to the bottom of a mounting groove 10 of the shell body 1 by a spring 9.

[0024] During installation, first, install the transmission in the inner groove of the right cylinder, then threadedly connect the left cylinder and the right cylinder, then slide the reinforcing cylinder 2 from the left side into the shell body 1, the top of the positioning column 8 is pressed into the mounting groove 10 under the action of the right side of the reinforcing cylinder 2, until the sliding strip 5 moves to the rightmost side of the sliding groove 6, at this time, the positioning column 8 enters the positioning groove 7 under the action of the spring 9, thereby completing the installation.

[0025] When disassembling, the reinforcing cylinder 2 body moves to the left side, the positioning groove 7 right side presses the positioning column 8 into the mounting groove 10, until the reinforcing cylinder 2 slides through the upper end of the mounting groove 10, the positioning column 8 is higher than the surface of the shell housing under the action of the spring 9, the reinforcing cylinder 2 is separated from the shell housing, and then the left cylinder body is separated, so that the disassembly is completed, and the maintenance is more rapid and convenient, and the disassembly can be carried out without external tools, and the problem of high maintenance cost of the traditional built-in type flower drum of the transmission is solved.

[0026] The reinforcing cylinder 2 outer wall is provided with a flower drum disc 3 near two ends, respectively, and a plurality of spoke holes are arranged in an array around the reinforcing cylinder 2 shaft center as a center on the flower drum disc 3.

[0027] Compared with the prior art, the utility model discloses a combined shell for a transmission built-in type flower drum, which adopts a combined structure, can make the maintenance more rapid and convenient, can carry out the disassembly without external tools, and solves the problem of high maintenance cost of the traditional built-in type flower drum of the transmission.

[0028] In the description of the utility model, it should be explained that components are all general standard components or components known by those skilled in the art, and the structure and principle thereof can be known by the technical personnel through a technical manual or through a conventional test method, the orientation or position relationship indicated by the terms "up", "down", "left", "right", "in", "out" and the like is the orientation or position relationship based on the shown in the drawings, or is the orientation or position relationship commonly placed when the utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as limiting the utility model.

[0029] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent flow conversion obtained by the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A combined housing for a hub with an internal transmission, comprising a housing body, a sprocket mounted on the right side of the housing body, the sprocket being connected to the housing body via a bearing, a rotating shaft passing through the housing body and the sprocket in sequence from left to right, characterized in that: The shell body adopts a combined structure; The combined structure includes a shell structure for constituting the housing body and a reinforcement structure for fixing the shell structure.

2. A combined housing for a hub with an internal transmission according to claim 1, characterized in that: The housing structure includes a left cylinder and a right cylinder. An inner groove is formed in the left cylinder and the right cylinder. After the left cylinder and the right cylinder are connected by a connecting structure, the two inner grooves form an inner cavity for installing a transmission.

3. A combined housing for a hub with an internal transmission according to claim 2, characterized in that: The connecting structure includes a connecting ring and a connecting groove. The connecting ring is installed on the side of the left cylinder connected to the right cylinder. The connecting groove is opened on the side of the right cylinder connected to the left cylinder. The connecting ring and the connecting groove are respectively provided with external threads and internal threads that cooperate with each other.

4. A combined housing for a hub with an internal transmission according to claim 1, characterized in that: The reinforcement structure includes a reinforcement tube matched with the shell body, the reinforcement tube is installed on the outer wall of the shell body, the inner wall of the reinforcement tube is provided with a plurality of slide bars, and the slide bars match with the slide grooves opened on the outer wall of the shell body.

5. A combined housing for a hub with an internal transmission according to claim 4, characterized in that: The left end of the slide extends to the left side of the reinforcement tube, and a positioning groove is provided between the right end of the slide and the right side of the reinforcement tube. A positioning column is installed at a position corresponding to the positioning groove on the outside of the shell body, and the positioning column is connected to the bottom of the installation groove of the shell body through a spring.

6. A combined housing for a hub with an internal transmission according to claim 4, characterized in that: A hub plate is provided on the outer wall of the reinforcement tube near both ends, and a plurality of spoke holes are distributed in an array on the hub plate with the axis of the reinforcement tube as the center.

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