Bicycle chain washing and fixing device

Abstract

The utility model discloses a bicycle chain washing and fixing device which comprises a handle assembly, the outer side of one end of the handle assembly is connected with a flywheel assembly in a sleeved mode, the other end of the handle assembly is connected with an ejector rod assembly in a clamped mode, the handle assembly comprises a handle, a handle screw, a spring and a handle nut, and the ejector rod assembly comprises an ejector rod and an ejector rod nut. When the chain washing and fixing device is used, the boss is aligned with a cylinder shaft threaded hole of a bicycle frame and inserted into the cylinder shaft threaded hole, then axial pressure is applied to the ejector rod, the spring is compressed, the distance between the handle and the ejector rod is shortened, the boss is inserted into a cylinder shaft hole of the bicycle, the ejector rod is tightly attached to the bicycle frame, and the chain washing and fixing device is hung on the cylinder shaft hole of a rear fork gear of the bicycle frame and is not prone to loosening. And during disassembly, axial pressure is also applied to the ejector rod, so that the boss is loosened from the shaft hole of the bicycle barrel, and disassembly can be completed.

Description

Technical Field

[0001] The utility model relates to a bicycle chain washing and fixing device, in particular to a bicycle chain washing and fixing device. Background Art

[0002] The bicycle chain is the core component for energy transmission of the bicycle. It connects the chainring and the flywheel of the bicycle, transmits the kinetic energy of the chainring to the flywheel, and then drives the rotation of the rear wheel, enabling the bicycle to move. During cycling, various dirt such as mud, dust, and sand particles will adhere to the chain over time. If not cleaned in time, it will increase the cycling resistance, wear the accessories, and shorten its service life. Therefore, regular cleaning and maintenance of the chain are important parts of the daily maintenance components of the bicycle. The chain washing and fixing device is a tool used to fix the chain during cleaning and maintenance of the chain.

[0003] At present, the more common chain washing and fixing devices on the market are mainly divided into two types: one is for the quick-release wheel group structure, and the other is for the thru-axle wheel group structure. And the chain washing and fixing device of the thru-axle wheel group structure has only one flywheel. When installing it, it is necessary to pass the thru-axle rod through the thru-axle hole on the bicycle frame and then through the flywheel, then hang the chain with the flywheel, and then lock it to the thru-axle threaded hole at the other end of the frame. The installation process is troublesome. Moreover, the flywheel and the thru-axle rod have a sliding friction. When the chain rotates, the flywheel may not rotate due to the large friction force with the thru-axle rod, resulting in a sliding friction between the chain and the flywheel, which easily wears the chain; the sliding friction between the chain and the flywheel will also cause a large noise. Summary of the Utility Model

[0004] The utility model provides a bicycle chain washing and fixing device to overcome the defects that the existing chain washing and fixing device will cause friction between the chain and the flywheel, easily wear the chain, and generate a large noise.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a bicycle chain washing and fixing device, which includes a handle assembly. A flywheel assembly is sleeved on the outer side of one end of the handle assembly, and a top rod assembly is clamped at the other end.

[0007] Further, the flywheel assembly includes a flywheel. A trapezoidal groove structure is arranged in the middle of the outer surface of the flywheel, and a through hole is arranged inside it. Inner sinks for placing bearings are arranged on both sides of the through hole.

[0008] Further, the handle assembly includes a handle. The handle is provided with an inner hole, and its outer surface is provided with a shoulder for restricting the left and right sliding of the flywheel assembly and a handle knurling. A spring is placed in the inner hole, and internal threads A and B are respectively arranged at its left and right ends. Internal thread A is threadedly connected to the handle screw, and internal thread B is threadedly connected to the handle nut. The handle screw is provided with a handle hexagon socket for facilitating the locking with an Allen wrench, and its outer surface is provided with a handle boss for inserting into the threaded hole of the cylinder shaft. The handle nut is provided with a through hole and a disassembly and assembly hole, and the disassembly and assembly hole is used for locking the handle.

[0009] Further, the ejector rod assembly includes an ejector rod and an ejector rod nut that cooperates with it. The middle section of the outer surface of the ejector rod is provided with an ejector rod knurling, and its front end is provided with an ejector rod shoulder and an external thread for restricting the compression amount of the spring. The rear end is provided with an ejector rod boss for hanging on the cylinder shaft hole of the bicycle frame. The ejector rod nut is internally provided with an ejector rod hexagon socket and an ejector rod internal thread for facilitating the locking with an Allen wrench. The ejector rod internal thread is connected and locked with the external thread. The ejector rod nut is slidably arranged on the inner hole, and the ejector rod passes through the through hole.

[0010] Further, the flywheel, the handle screw, and the handle nut are all made of plastic material.

[0011] The beneficial effects achieved by the present utility model are as follows: Hang the chain in the trapezoidal groove, insert the boss into the threaded hole of the cylinder shaft of the bicycle frame, then apply an axial pressure to the ejector rod. The spring is compressed, and the distance between the handle and the ejector rod is shortened, so that the boss is inserted into the cylinder shaft hole of the bicycle, and the ejector rod is pressed against the frame. The chain washer and chain fixer are hung on the cylinder shaft hole of the rear fork opening of the frame and will not easily come off. When disassembling, also apply an axial pressure to the ejector rod to loosen the boss from the cylinder shaft hole of the bicycle, and then the disassembly can be completed. Description of the Drawings

[0012] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the flywheel assembly of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the handle assembly of the present utility model;

[0016] Figure 4 is a schematic structural diagram of the ejector rod assembly of the present utility model;

[0017] Figure 5 is a working state diagram of the present utility model.

[0018] In the figure: 1. Flywheel assembly; 11. Flywheel; 11.1. Trapezoidal groove; 11.2. Inner sunk platform; 12. Bearing; 2. Handle assembly; 21. Handle; 21.1. Inner hole; 21.2. Internal thread A; 21.3. Handle shoulder; 21.4. Internal thread B; 21.5. Handle knurling; 22. Handle screw; 22.1. Handle hexagon socket; 22.2. Handle boss; 23. Spring; 24. Handle nut; 24.1. Through hole; 24.2. Disassembly and assembly hole; 3. Ejector rod assembly; 31. Ejector rod; 31.1. External thread; 31.2. Ejector rod shoulder; 31.3. Ejector rod boss; 31.4. Ejector rod knurling; 32. Ejector rod nut; 32.1. Ejector rod internal thread; 32.2. Ejector rod hexagon socket; 4. Chain; 5. Barrel shaft threaded hole; 6. Barrel shaft hole. Specific embodiments

[0019] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present utility model, and are not used to limit the present utility model. Embodiment

[0020] As Figures 1 - 5 shown, a bicycle chain washer and fixer includes a handle assembly 2. A flywheel assembly 1 is sleeved on the outer side of one end of the handle assembly 2, and an ejector rod assembly 3 is clamped at the other end.

[0021] The flywheel assembly 1 includes a flywheel 11. A trapezoidal groove structure 11.1 is provided in the middle of the outer surface of the flywheel 11. A through hole is provided inside it. Inner sunk platforms 11.2 for placing bearings 12 are provided on both sides of the through hole. The flywheel 11 is made of plastic material.

[0022] The handle assembly 2 includes a handle 21. The handle 21 is provided with an inner hole 21.1. An outer surface of the handle 21 is provided with a shoulder 21.3 and a handle knurling 21.5 for restricting the left and right sliding of the flywheel assembly 1. A spring 23 is placed in the inner hole 21.1. Internal thread A 21.2 and internal thread B 21.4 are respectively provided at the left and right ends of the spring 23. The internal thread A 21.2 is threadedly connected with a handle screw 22, and the internal thread B 21.4 is threadedly connected with a handle nut 24. The handle screw 22 is provided with a handle hexagon socket 22.1 for facilitating locking with an inner hexagon wrench. An outer surface of the handle screw 22 is provided with a handle boss 22.2 for inserting into a barrel shaft threaded hole 5. The handle nut 24 is provided with a through hole 24.1 and a disassembly and assembly hole 24.2. The disassembly and assembly hole 24.2 is used for locking the handle 21. The handle screw 22 and the handle nut 24 are made of plastic material.

[0023] The ejector rod assembly 3 includes an ejector rod 31 and an ejector rod nut 32 that cooperates with it. In the middle section of the outer surface of the ejector rod 31, there is an ejector rod knurling 31.4. At its front end, there is an ejector rod shoulder 31.2 and an external thread 31.1 that limit the compression amount of the spring 23. At the rear end, there is an ejector rod boss 31.3 for hanging on the bicycle hub hole 6. The ejector rod nut 32 is provided with an ejector rod internal hexagon 32.2 and an ejector rod internal thread 32.1 that are convenient for locking with an internal hexagon wrench. The ejector rod internal thread 32.1 is connected and locked with the external thread 31.1. The ejector rod nut 32 is slidably arranged on the inner hole 21.1, and the ejector rod 31 passes through the through hole 24.1.

[0024] After the chain washer and chain retainer are assembled, the ejector rod nut 32 squeezes the spring 23, making the spring 23 in a certain compressed state. As the ejector rod nut 32 moves in the inner hole 21.1, the compression amount of the spring 23 changes accordingly.

[0025] Working process: During use, first disassemble the wheel set, hang the chain 4 in the trapezoidal groove 11.1 of the flywheel 11, and then align the boss 22.2 of the handle screw 22 with the hub thread hole 5 of the bicycle frame and insert it; then apply axial pressure to the ejector rod 31. The spring 23 is compressed, and the distance between the handle 21 and the ejector rod 31 is shortened. Align the boss 31.3 of the ejector rod 31 with the bicycle hub hole 6 and release the pressure, so that the boss 31.3 of the ejector rod 31 is inserted into the bicycle hub hole 6. Due to the elastic force of the compressed spring 23, the ejector rod 31 is pressed against the frame. Therefore, the chain washer and chain retainer are hung on the hub hole 6 of the rear fork opening of the frame and will not easily come off. During disassembly, also apply axial pressure to the ejector rod 31 to loosen the boss 31.3 of the ejector rod 31 from the bicycle hub hole 6, and then the disassembly can be completed.

[0026] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. The terms used in the description of this application are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same category and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0028] It should be noted that in the description of this application, the orientation or positional relationships indicated by the orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description. Without contrary explanations, these orientation terms do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be understood as limiting the protection scope of this application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

Claims

1. A bicycle chain cleaning and fixing device, characterized in that It includes a handle assembly, with a flywheel assembly sleeved on the outer side of one end of the handle assembly and a push rod assembly clamped at the other end; The handle assembly includes a handle which has an inner hole. A spring is placed in the inner hole, and internal thread A and internal thread B are respectively provided at its left and right ends. A handle boss for inserting into the threaded hole of the cylinder shaft is provided on the outer surface of the handle screw. Through holes and disassembly holes are respectively provided on the handle nut, and the disassembly hole is used to lock the handle; The push rod assembly includes a push rod and a push rod nut that cooperates with it. A push rod shoulder and an external thread for restricting the spring compression amount are provided at the front end of the outer surface of the push rod, and a push rod boss for hanging on the bicycle cylinder shaft hole is provided at the rear end. A push rod internal thread is provided inside the push rod nut, and the push rod internal thread is connected and locked with the external thread. The push rod nut is slidably arranged on the inner hole, and the through hole on the handle nut is used for the push rod to pass through.

2. The bicycle chain cleaning and fixing device according to claim 1, characterized in that, The flywheel assembly includes a flywheel. A trapezoidal groove structure is provided in the middle of the outer surface of the flywheel, and a through hole is provided inside it. Inner counterbores for placing bearings are provided on both sides of the through hole.

3. The bicycle chain cleaning and fixing device according to claim 1, wherein, The internal thread A is threadedly connected to the handle screw, and the internal thread B is threadedly connected to the handle nut. A handle hexagon socket convenient for locking with an inner hexagon wrench is provided on the handle screw. A shoulder and handle knurling for restricting the left and right sliding of the flywheel assembly are provided on the outer surface of the handle.

4. The bicycle chain cleaning and fixing device according to claim 1, wherein Knurling is provided in the middle section of the outer surface of the push rod, and a push rod hexagon socket convenient for locking with an inner hexagon wrench is provided inside the push rod nut.

5. The bicycle chain cleaning and fixing device according to claim 1, characterized in that, The flywheel, handle screw, and handle nut are all made of plastic material.

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