Bicycle chain cover installed in rear clamping mode
The snap-on installation structure and positioning plate design solve the problem of bicycle chain cover falling off due to screw corrosion, achieving convenient installation and an aesthetically pleasing bicycle chain cover design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO TAIMAO VEHICLE IND CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-04-24
AI Technical Summary
Existing bicycle chain guards are fixed with screws, which are prone to rust and falling off, failing to effectively protect the sprockets and chain.
It adopts a snap-on installation structure, using the cooperation of positioning plates and locking blocks, combined with the clamping of the partition seam, to connect the front chain cover and the rear chain cover, reducing the number of screw fixing points.
It improves the ease of installation and aesthetics of bicycle chain guards, and avoids the problem of screws falling off due to rust.
Smart Images

Figure CN224159362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bicycle technology, specifically to a rear-mounted bicycle chain cover. Background Technology
[0002] Bicycle chain guards are structures used to protect the sprockets and chain. However, existing bicycle chain guards are usually fixed to the frame with screws. Over time, the screws are prone to rust and fall off, causing the bicycle chain guard to fall off and fail to provide protection. Utility Model Content
[0003] In view of the problems existing in the prior art, this utility model discloses a rear-clamping bicycle chain cover, including a front chain cover, a rear chain cover, a partition, a positioning plate slot, a locking block, a positioning plate, and a positioning plate boss; the rear chain cover is installed in the center of the bicycle frame and fixed with screws; the head of the front chain cover is snapped to the rear chain cover, and a partition is provided in the center of the tail to divide the front chain cover into upper and lower parts; the positioning plate slot is located in the center of the rear side of the tail of the front chain cover, and a protruding locking block is provided in the positioning plate slot; the front side of the positioning plate is provided with a positioning plate boss, the head of which is clamped on the rear wheel axle of the rear of the bicycle frame, and the tail is clamped into the positioning plate slot.
[0004] As a preferred technical solution of this utility model, the partition seam divides the positioning piece slot and the card block into upper and lower parts.
[0005] As a preferred technical solution of this utility model, the tail of the positioning piece is stuck on the upper and lower sides of the card block, and its tail opening matches the slope of the card block to clamp the partition seam.
[0006] The beneficial effects of this utility model are as follows: The front chain cover of this utility model adopts a snap-on installation and the tail is fixed with a positioning piece. The front chain cover is integrally molded and does not require additional screws for fixing, which makes it easy to install and more aesthetically pleasing. Attached Figure Description
[0007] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
[0008] Figure 1 This is a schematic diagram of the installation of this utility model. Figure 1 ;
[0009] Figure 2 This is a schematic diagram of the installation of this utility model. Figure 2 ;
[0010] Figure 3 This is a rear view of the front chain cover of this utility model;
[0011] Figure 4 This is a schematic diagram of the installation of the front chain cover at the tail of this utility model;
[0012] Figure 5 This is a schematic diagram of the positioning plate structure of this utility model;
[0013] In the diagram: 1. Front chain cover; 2. Rear chain cover; 3. Separator seam; 4. Positioning plate slot; 5. Locking block; 6. Positioning plate; 7. Positioning plate boss; 8. Bicycle frame; 9. Rear wheel axle. Detailed Implementation Example 1
[0014] like Figures 1 to 5 As shown, this utility model discloses a rear-clamping bicycle chain cover, including a front chain cover 1, a rear chain cover 2, a partition 3, a positioning plate slot 4, a locking block 5, a positioning plate 6, and a positioning plate boss 7. The rear chain cover 2 is installed in the center of the bicycle frame 8 and is fixed with screws. The head of the front chain cover 1 is snapped to the rear chain cover 2, and the rear center of the front chain cover 1 is provided with a partition 3 to divide the front chain cover 1 into upper and lower parts. The positioning plate slot 4 is located in the center of the rear side of the rear of the front chain cover 1, and the positioning plate slot 4 is provided with a protruding locking block 5. The front side of the positioning plate 6 is provided with a positioning plate boss 7, the head of which is clamped on the rear wheel axle core 9 of the rear of the bicycle frame 8, and the tail is clamped into the positioning plate slot 4. The partition joint 3 divides the card slot plate 4 and the card block 5 into upper and lower parts, allowing for direct installation. The head is secured to the rear chain cover 2 via a snap-fit connection. During installation, nuts are located on both sides of the positioning plate 6 to limit its movement. The tail of the positioning plate engages with the upper and lower sides of the card block 5, with its opening matching the angle of the card block 5, clamping the partition joint 3 and pressing the tail of the front chain cover 1 into place. This reduces assembly steps, welding points, and screw fixing points, making installation easier and resulting in a more aesthetically pleasing final product.
[0015] Components not described in detail in this article are existing technologies.
[0016] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. A rear-mounted bicycle chain cover, characterized in that: The bicycle frame includes a front chain cover (1), a rear chain cover (2), a partition (3), a positioning plate slot (4), a locking block (5), a positioning plate (6), and a positioning plate boss (7). The rear chain cover (2) is installed in the center of the bicycle frame (8) and is fixed with screws. The front chain cover (1) is snapped together with the rear chain cover (2), and the rear chain cover (1) is divided into upper and lower parts by a partition (3) in the center of the rear end. The positioning plate slot (4) is located in the center of the rear side of the front chain cover (1), and the positioning plate slot (4) is provided with a protruding locking block (5). The positioning plate (6) is provided with a positioning plate boss (7) on the front side, the head of which is locked on the rear wheel axle core (9) of the bicycle frame (8), and the tail is locked into the positioning plate slot (4).
2. The bicycle chain cover with rear clip mounting according to claim 1, characterized in that: The dividing seam (3) divides the positioning piece slot (4) and the card block (5) into upper and lower parts.
3. A rear-mounted bicycle chain cover according to claim 1, characterized in that: The tail of the positioning piece (6) is locked on the upper and lower sides of the locking block (5), and its tail opening matches the slope of the locking block (5) to clamp the separation seam (3).