Assembled chain box

The modular chain box design solves the problem of cumbersome lubrication, maintenance, and repair of existing chain boxes, enabling convenient lubrication and maintenance operations and improving the chain box's protective properties and efficiency.

CN224013764UActive Publication Date: 2026-03-20HANGZHOU XINXING BICYCLE PARTS
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Patent Information

Application Number
CN202520912464.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-10
Publication Date
2026-03-20
Estimated Expiration
2035-05-10

AI Technical Summary

Technical Problem

Existing chain boxes are cumbersome to operate during lubrication, maintenance, and replacement. Semi-enclosed designs offer poor protection, while fully enclosed designs require disassembly for maintenance, which is inconvenient.

Method used

A modular chain box was designed, comprising a box body, cover plate, positioning boss, positioning groove, lubrication port, sealing cover, and magnet. The lubrication port can be directly removed through the sealing cover to add lubricating oil, the cover plate can be removed separately for maintenance or replacement, and the sealing cover can be easily installed using magnets.

Benefits of technology

It enables convenient operation of lubrication, maintenance, repair and replacement, simplifies the use process of chain box, and improves protection and operating efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224013764U_ABST
    Figure CN224013764U_ABST
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Abstract

The utility model discloses a split mounting type chain box which comprises a box body. The cover plate is arranged on the box body; the splicing structure is arranged on the box body and the cover plate and is convenient for splicing the cover plate and the box body; the assembling structure comprises a positioning boss arranged on the box body, a positioning groove formed in the cover plate and matched with the positioning boss, a lubricating opening formed in the box body and used for lubricating the chain conveniently, and a sealing cover detachably installed on the box body and used for blocking the lubricating opening. According to the split mounting type chain box, when lubricating oil needs to be added to a chain for maintenance, only the sealing cover needs to be taken down from the box body, then the lubricating oil can be added to the chain through the lubricating opening for lubrication maintenance, the whole chain box does not need to be detached from a bicycle, and operation is easy, convenient and rapid.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle chain box, concretely refers to a spliced chain box. BACKGROUND

[0002] The chain box in prior art basically contains two forms of half-enclosing and full-enclosing, the half-enclosing chain box is more convenient when adding lubricating oil to maintain the chain, but the half-enclosing chain box is not good for the protection of the chain, and the half-enclosing chain box needs to be disassembled before maintenance when the chain needs to be repaired or replaced; although the full-enclosing chain box is good for the protection of the chain, it needs to be disassembled before maintenance when the chain needs to be added with lubricating oil, and the operation is more complicated. Therefore, a spliced chain box is provided. SUMMARY

[0003] The utility model discloses a spliced chain box to solve the above problems.

[0004] In order to achieve the above purpose, the utility model provides a spliced chain box, which comprises a box body, characterized by further comprising a cover plate installed on the box body and a splicing structure arranged on the box body and the cover plate to facilitate splicing of the cover plate and the box body, the splicing structure comprises a positioning boss arranged on the box body, a positioning groove arranged on the cover plate and matched with the positioning boss, a lubricating port arranged on the box body to facilitate lubrication of the chain and a detachable cover installed on the box body to block the lubricating port.

[0005] Further preferably, it further comprises a mounting groove arranged in position on the box body and the cover and a magnet installed in the mounting groove to magnetically mount the cover on the box body.

[0006] Further preferably, it further comprises a fixing column arranged in the box body, a through hole arranged on the cover plate and matched in position with the fixing column and a screw with one end penetrating through the through hole and connected with the fixing column to fixedly connect the cover plate and the fixing column.

[0007] The utility model has the advantages that when the chain needs to be added with lubricating oil for maintenance, the cover can be removed from the box body, and the chain can be added with lubricating oil through the lubricating port for lubrication and maintenance, without the need to disassemble the whole chain box from the bicycle, so the operation is simple, convenient and fast.

[0008] Meanwhile, the cover is magnetically mounted on the box body through the magnet, which facilitates disassembly and assembly of the cover, is efficient and convenient to operate.

[0009] When the chain needs to be repaired or replaced, the cover plate can be disassembled from the box body, without the need to disassemble the whole chain box.

[0010] Through the setting of the positioning boss and the positioning groove, a positioning effect on the mounting and fitting position of the box body and the cover plate is achieved, so that the box body and the cover plate are fixedly connected by aligning and connecting the one end of the screw with the fixed column after the one end of the screw passes through the through hole. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic diagram of the utility model;

[0012] Figure 2 is a structural schematic diagram of the box body in the utility model;

[0013] Figure 3 is a structural schematic diagram of the cover plate in the utility model;

[0014] Figure 4 is a structural schematic diagram of the sealing cover in the utility model.

[0015] Legend: 1, box body; 2, cover plate; 3, positioning boss; 4, positioning groove; 5, lubricating port; 6, sealing cover; 7, mounting groove; 71, magnet; 8, fixed column; 9, through hole; 10, screw. DETAILED DESCRIPTION

[0016] Now we make further explanation of the assembled chain box according to the utility model in combination with the drawings.

[0017] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications also change accordingly.

[0018] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood broadly; for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0019] Referring to Figures 1-4 As shown in the utility model, an assembled chain box comprises a box body; characterized by further comprising a cover plate mounted on the box body and an assembling structure arranged on the box body and the cover plate to facilitate assembling the cover plate and the box body, the assembling structure comprises a positioning boss arranged on the box body, a positioning groove arranged on the cover plate and matched with the positioning boss, a lubricating port arranged on the box body to facilitate lubricating the chain and a sealing cover detachably mounted on the box body to seal the lubricating port;

[0020] Through the setting of the assembled chain box, when the chain needs to be maintained by adding lubricating oil, the cover can be removed from the box body, and then the chain can be lubricated and maintained by adding lubricating oil through the lubricating port, without the need to disassemble the entire chain box from the bicycle, which is simple, convenient and fast.

[0021] Through the setting of the cover plate, when the chain needs to be repaired or replaced, the cover plate can be disassembled from the box body, without the need to disassemble the entire chain box.

[0022] Through the setting of the positioning convex and the positioning groove, the positioning convex and the positioning groove are used for positioning the mounting and cooperation position of the box body and the cover plate, so that the box body and the cover plate are fixedly connected by the screw penetrating through the through hole and being aligned with the fixing column.

[0023] In one embodiment, the mounting groove and the magnet for magnetically mounting the cover on the box body are arranged at positions corresponding to the box body and the cover.

[0024] Through the setting of the mounting groove, the mounting groove is used for limiting the mounting position of the magnet, and when the box body and the cover are made of materials that can be magnetically attracted, the magnet is mounted in the mounting groove through magnetic attraction, and when the box body and the cover are made of materials that cannot be magnetically attracted, the magnet can be fixed in the mounting groove through bonding, interference or riveting.

[0025] Meanwhile, the cover is magnetically mounted on the box body through the magnet, so that the cover is convenient to disassemble and assemble, high in efficiency and convenient to operate.

[0026] In one embodiment, the fixing column arranged in the box body, the through hole arranged on the cover plate corresponding to the fixing column and the screw penetrating through the through hole and being connected with the fixing column to fixedly connect the cover plate and the fixing column are further included.

[0027] Through the setting of the fixing column and the through hole, the fixing column and the through hole are used for fixedly connecting the cover plate and the box body through the screw, and the setting of the positioning convex and the positioning groove is used for positioning the fixing column on the box body and the through hole on the cover plate.

[0028] In the utility model, when the box body and the cover plate are assembled, firstly, the cover plate is preliminarily positioned and assembled through the cooperation of the positioning convex and the positioning groove, and then the screw is fixedly connected with the fixing column by penetrating through the through hole, so that the cover plate and the box body are fixedly connected.

[0029] When the chain needs to be added with lubricating oil, the cover can be disassembled from the box body by pulling the cover, and the lubricating port is exposed after the cover is disassembled, so that the chain in the chain box can be added with lubricating oil through the lubricating port, and the chain can be lubricated and maintained without disassembling the chain box by rotating the pedal to drive the chain to move.

[0030] After the addition of the lubricating oil is completed, the cover is fixed again at the lubricating port through magnetic attraction, and one end of the cover is rotatably installed on the box body through a hinge or other means to prevent the cover from being lost.

[0031] The protection scope of the utility model is not limited to the above embodiments and their transformations. The routine modifications and replacements made by the skilled in the art based on the content of the embodiments all belong to the protection scope of the utility model.

Claims

1. A modular chain box, comprising a box body (1); characterized in that... It also includes a cover plate (2) installed on the box body (1) and an assembly structure provided on the box body (1) and the cover plate (2) to facilitate the assembly of the cover plate (2) and the box body (1). The assembly structure includes a positioning boss (3) provided on the box body (1), a positioning groove (4) provided on the cover plate (2) that is adapted to the positioning boss (3), a lubrication port (5) provided on the box body (1) to facilitate the lubrication of the chain, and a detachable cover (6) installed on the box body (1) to seal the lubrication port (5).

2. The assembled chain box according to claim 1, characterized in that: It also includes mounting slots (7) located on the box body (1) and the cover (6) respectively, and magnets (71) installed in the mounting slots (7) for magnetically mounting the cover (6) on the box body (1).

3. The assembled chain box according to claim 1, characterized in that: It also includes a fixing post (8) set inside the box (1), a through hole (9) set on the cover plate (2) corresponding to the position of the fixing post (8), and a screw (10) that passes through the through hole (9) and connects to the fixing post (8) to fix the cover plate (2) and the fixing post (8).