Bicycle chain guide

Abstract

The utility model discloses a bicycle chain guide which comprises a fixing piece, a connecting rod and a chain guide plate, a strip-shaped hole is formed in the fixing piece, one end of the fixing piece is bent towards the other end of the fixing piece to form a hoop, the fixing piece is fixedly connected to a bicycle water bottle cage through a connecting bolt, and the connecting rod is connected with the chain guide plate. One end of the connecting rod is locked in the hoop through a fastening bolt, the other end of the connecting rod is fixedly connected with a connecting block, a connecting groove is formed in one end of the connecting rod, the guide chain plate comprises a guide chain side plate, a guide chain top plate and a guide chain connecting plate, and one end of the connecting rod is fixedly connected with the guide chain connecting plate in an inserted mode. The bicycle chain guide is advanced in design, compact in structure and convenient to install, the chain guide is conveniently fixed to a bicycle water bottle cage through the fixing piece, installation of the chain guide is not affected by the shape of a bicycle stand pipe, installation and use of all special-shaped frames can be met, and the application range is greatly widened.

Description

Technical Field

[0001] This utility model belongs to the technical field of bicycle parts, specifically relating to a bicycle chain guide. Background Technology

[0002] A chain guide is an important device in a bicycle drivetrain used to stabilize the chain position and prevent it from falling off, playing a crucial role, especially on rough terrain or during intense riding. On bumpy roads, during jumps, or at high speeds, the chain may slip off the chainring (front sprocket) or freewheel (rear sprocket) due to severe vibration or lateral displacement. The chain guide physically limits this chain movement, preventing it from falling off, reducing lateral chain sway during riding, improving drivetrain efficiency, and preventing friction between the chain and the frame or any unusual noises.

[0003] Most chain guides on the market are fixed to the round seat tube of bicycles using clamps. However, bicycle seat tubes, besides the common round tubes, also have some irregularly shaped tubes with specific structures or performance optimizations. For example, there are elliptical tubes that are more flexible vertically to absorb vibrations and more rigid horizontally to improve pedaling efficiency; triangular or trapezoidal tubes that provide a larger welding area at joints to enhance frame strength; and teardrop-shaped tubes that combine elliptical and streamlined designs to reduce wind resistance while maintaining structural strength. Commercially available chain guides cannot meet the needs of these irregularly shaped frames. Therefore, there is an urgent need to design a bicycle chain guide to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a bicycle chain guide to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bicycle chain guide, comprising:

[0006] The fixing plate is a strip-shaped plate structure with strip holes. One end of the fixing plate is bent into a clamp towards the other end. The fixing plate is fixedly connected to the bicycle water bottle cage by connecting bolts.

[0007] A connecting rod, one end of which is locked into a clamp by a fastening bolt, and the other end is fixedly connected to a connecting block. The end of the connecting rod near the connecting block is provided with a connecting groove.

[0008] The guide plate includes an integrally formed guide side plate, a guide top plate, and a guide connecting plate. The guide side plates are disposed on both sides of the guide top plate, and the guide connecting plate is disposed on the top of the guide top plate. One end of the connecting rod is inserted and fixed to the guide connecting plate.

[0009] Furthermore, there are two strip holes, and the central axes of the two strip holes and the fixing plate coincide.

[0010] Furthermore, the connecting block has a regular hexagonal structure, and the connecting block coincides with the central axis of the connecting rod.

[0011] Furthermore, the connecting groove extends through the connecting block and coincides with the central axis of the connecting rod.

[0012] Furthermore, the chain connecting plate is provided with connecting holes, one end of which is a regular hexagonal hole that matches the connecting block, and the other end is a circular hole.

[0013] Furthermore, a limiting block is fixedly connected inside the connecting hole. One end of the limiting block is fitted with the inner wall of the regular hexagonal hole, and the other end is fitted with the inner wall of the circular hole. A circular opening is provided at the center of the limiting block.

[0014] Furthermore, one end of the guide plate is provided with a front stop arc groove, and the other end is provided with a rear stop arc groove, and the bottom of the guide plate is provided with a groove.

[0015] The technical effects and advantages of this utility model are as follows: This bicycle chain guide has an advanced design, compact structure, is easy to use, and reliable operation. By setting a connecting rod, the fixing plate and the chain guide plate can be connected into one piece. By setting a fixing plate, the chain guide can be easily fixed to the bicycle water bottle cage. This makes the installation of the chain guide unaffected by the shape of the bicycle seat tube, and can meet the installation and use of all irregular frames, greatly improving its applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the fixing piece of this utility model;

[0018] Figure 3 This is a schematic diagram of the connecting rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the guide plate of this utility model;

[0020] Figure 5 This is a structural schematic diagram of the guide plate of this utility model from another angle;

[0021] Figure 6 This is a front view of the fixing piece in Embodiment 2 of this utility model.

[0022] In the diagram: 100, fixing plate; 101, strip hole; 102, clamp; 103, fastening bolt; 200, connecting rod; 201, connecting block; 202, connecting groove; 300, guide plate; 301, guide side plate; 302, guide top plate; 303, guide connecting plate; 3031, connecting hole; 3032, limiting block; 304, front stop arc groove; 305, rear stop arc groove; 306, groove. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] This utility model provides, for example Figure 1-5 The bicycle chain guide shown includes:

[0028] The fixing plate 100 is a strip-shaped plate structure. The fixing plate 100 has a strip hole 101. One end of the fixing plate 100 is bent into a clamp 102 towards the other end. The fixing plate 100 is fixedly connected to the bicycle water bottle cage by connecting bolts.

[0029] A connecting rod 200 is provided. One end of the connecting rod 200 is locked into the clamp 102 by a fastening bolt 103, and the other end is fixedly connected to a connecting block 201. The end of the connecting rod 200 near the connecting block 201 is provided with a connecting groove 202. The fastening bolt 103 is set perpendicular to the fixing plate 100 and connects one end of the fixing plate 100 to the fixing plate 100 itself. By changing the position of the fastening bolt 103, the hole diameter of the clamp 102 can be adjusted so that after the fastening bolt 103 is tightened, the inner wall of the clamp 102 is tightly fitted with the connecting rod 200, and the connecting rod 200 is locked into the clamp 102 by friction.

[0030] The guide plate 300 includes an integrally formed guide side plate 301, a guide top plate 302, and a guide connecting plate 303. The guide side plate 301 is disposed on both sides of the guide top plate 302, and the guide connecting plate 303 is disposed on the top of the guide top plate 302. One end of the connecting rod 200 is inserted and fixed to the guide connecting plate 303.

[0031] For example, see Figures 1-2 As shown, there are two strip holes 101, and the central axes of the two strip holes 101 and the fixing piece 100 coincide.

[0032] In this technical solution, two connecting bolts pass through two strip holes 101 and are fixed to the bicycle water bottle cage, making the installation of the fixing plate 100 more stable, and at the same time making it convenient to adjust the installation position of the two connecting bolts according to the size of the bicycle water bottle cage.

[0033] For example, see Figure 3 As shown, the connecting block 201 has a regular hexagonal structure, and the connecting block 201 coincides with the central axis of the connecting rod 200.

[0034] In this technical solution, the connecting block 201 with a regular hexagonal structure experiences greater resistance when rotating, thus effectively preventing the connecting rod 200 from rotating and thereby improving the structural stability.

[0035] For example, see Figure 3 As shown, the connecting groove 202 is provided through the connecting block 201, and the connecting groove 202 coincides with the central axis of the connecting rod 200.

[0036] In this technical solution, it is convenient to pass the connecting pin through the connecting block 201 and insert it into the connecting groove 202, so that the connecting rod 200 and the guide plate 303 can be fixedly connected by the connecting pin. This not only facilitates the disassembly and assembly of the guide plate 300, but also prevents the guide plate 300 from falling off the connecting rod 200 during the use of the guide.

[0037] For example, see Figures 4-5As shown, the chain connecting plate 303 is provided with a connecting hole 3031. One end of the connecting hole 3031 is a regular hexagonal hole that matches the connecting block 201, and the other end is a circular hole.

[0038] In this technical solution, it is convenient to insert one end of the connecting rod 200 with the connecting block 201 fixed into the connecting hole 3031. The regular hexagonal connecting block 201 is embedded in the regular hexagonal hole. The relative rotation between the connecting rod 200 and the guide chain connecting plate 303 needs to overcome a large sliding friction and dynamic impact. Therefore, the connection between the two has strong stability. At the same time, it is convenient to insert the connecting pin into the connecting rod 200 from the other side of the connecting hole 3031, which can effectively prevent the guide chain connecting plate 303 from falling off the connecting rod 200.

[0039] For example, see Figures 4-5 As shown, a limiting block 3032 is fixedly connected inside the connecting hole 3031. One end of the limiting block 3032 is fitted with the inner wall of the regular hexagonal hole, and the other end is fitted with the inner wall of the circular hole. A circular opening is provided at the center of the limiting block 3032.

[0040] In this technical solution, by setting a limiting block 3032, the installation positions of the connecting block 201 and the connecting pin can be limited, ensuring that their bottom ends are located at the center of the connecting hole 3031. By setting a circular through-hole at the center of the limiting block 3032, the connecting pin can easily pass through the circular through-hole and be inserted into the connecting groove 202.

[0041] For example, see Figures 4-5 As shown, one end of the guide plate 300 is provided with a front stop arc groove 304, and the other end is provided with a rear stop arc groove 305. The bottom of the guide plate 302 is provided with a groove 306.

[0042] In this technical solution, the guide plate 300 is located above the joint between the chain and the toothed sprocket, that is, at the meshing front end of the chain and the toothed sprocket. The chain is guided into the interior of the guide plate 300 through the front stop arc groove 304, and then guided out of the interior of the guide plate 300 through the rear stop arc groove 305. The guide side plate 301 can restrict the left and right movement of the chain, and the guide top plate 302 can restrict the up and down swing of the chain, which can effectively prevent the chain from accidentally falling off. The bottom of the guide top plate 302 is provided with a groove 306, which can avoid friction between the chain and the guide top plate 302 during normal operation and extend the service life of the chain.

[0043] Example 2:

[0044] See Figure 6The difference from Embodiment 1 is that the hole diameter of the clamp 102 is set to a larger fixed value, the fastening bolt 103 is perpendicular to the fixing plate 100 and passes through the bottom of the clamp 102. After the fastening bolt 103 is tightened, one end of the fastening bolt 103 can abut against and fix the connecting rod 200 inside the clamp 102, thereby locking the connecting rod 200 inside the clamp 102.

[0045] Working principle: When using this bicycle chain guide, first insert one end of the connecting rod 200, which has the connecting block 201 fixed, into the connecting hole 3031. Then, insert the connecting pin from the other side of the connecting hole 3031 and extend it into the connecting groove 202, thus connecting the connecting rod 200 to the chain guide plate 300. Next, use the connecting bolt to pass through the strip hole 101 and fix the fixing plate 100 to the bicycle water bottle cage, thus installing the fixing plate 100. Then, rotate the connecting rod 200 to adjust the angle of the chain guide plate 300. When the angle of the chain guide plate 300 meets the actual requirements, insert the other end of the connecting rod 200 into the clamp 102. Adjust the position of the chain guide plate 300 by controlling the length of the connecting rod 200 inserted into the clamp 102. When the position of the chain guide plate 300 meets the actual requirements, tighten the fastening bolt 103 to fix one end of the connecting rod 200 in place, thus installing the connecting rod 200 and the fixing plate 100, and finally installing the bicycle chain guide. This bicycle chain guide features an advanced design, compact structure, ease of use, and reliable operation. By setting a connecting rod 200, the fixing plate 100 and the chain guide plate 300 can be connected into one unit. The fixing plate 100 makes it easy to fix the chain guide to the bicycle water bottle cage, so that the installation of the chain guide is not affected by the shape of the bicycle seat tube. It can meet the installation and use of all irregular frames, greatly expanding its applicability.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chain guide for a bicycle, characterized in that include: A fixing plate (100) is a strip-shaped plate structure. A strip-shaped hole (101) is provided on the fixing plate (100). One end of the fixing plate (100) is bent into a clamp (102) towards the other end. The fixing plate (100) is fixedly connected to the bicycle water bottle holder by connecting bolts. A connecting rod (200) is provided, one end of which is locked in the clamp (102) by a fastening bolt (103), and the other end is fixedly connected to a connecting block (201). A connecting groove (202) is provided at the end of the connecting rod (200) near the connecting block (201). The guide plate (300) includes an integrally formed guide side plate (301), a guide top plate (302), and a guide connecting plate (303). The guide side plate (301) is disposed on both sides of the guide top plate (302), and the guide connecting plate (303) is disposed on the top of the guide top plate (302). One end of the connecting rod (200) is inserted and fixed to the guide connecting plate (303).

2. The bicycle chain guide of claim 1, wherein: There are two strip holes (101), and the central axes of the two strip holes (101) and the fixing piece (100) coincide.

3. The bicycle chain guide of claim 1, wherein: The connecting block (201) has a regular hexagonal structure, and the connecting block (201) coincides with the central axis of the connecting rod (200).

4. The bicycle chain guide of claim 1, wherein: The connecting groove (202) is provided through the connecting block (201), and the connecting groove (202) coincides with the central axis of the connecting rod (200).

5. The bicycle chain guide of claim 1, wherein: The chain connecting plate (303) is provided with a connecting hole (3031), one end of which is a regular hexagonal hole that matches the connecting block (201), and the other end is a circular hole.

6. The bicycle chain guide according to claim 5, characterized in that: A limiting block (3032) is fixedly connected inside the connecting hole (3031). One end of the limiting block (3032) is fitted with the inner wall of the regular hexagonal hole, and the other end is fitted with the inner wall of the circular hole. A circular opening is provided at the center of the limiting block (3032).

7. The bicycle chain guide of claim 1, wherein: One end of the guide plate (300) is provided with a front stop arc groove (304), and the other end is provided with a rear stop arc groove (305). The bottom of the guide plate (302) is provided with a groove (306).

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