A type of mountain bike bottom bracket wrench

Abstract

This utility model discloses a mountain bike bottom bracket wrench, belonging to the technical field of mountain bike repair tools. It includes a handle, a slotted nut sleeve, and a splined nut sleeve. One end of the handle has a handle end, and the other end has a mounting end. The slotted nut sleeve is mounted on one end face of the mounting end, and the splined nut sleeve is mounted on the other end face of the mounting end. This solves the technical problem that traditional mountain bike bottom bracket assembly and disassembly tools are inconvenient for simultaneously assembling and disassembling both slotted nut and splined nut type bottom brackets.

Description

Technical Field

[0001] This utility model relates to the technical field of mountain bike repair tools, and in particular to a mountain bike bottom bracket wrench. Background Technology

[0002] The bottom bracket (or subframe) of a mountain bike is a rotating component housed within the bottom bracket of the frame, connecting the left and right cranks. It endures frequent rotation and significant loads during riding, making it a component that wears out very quickly and requires frequent replacement. Older mountain bike bottom brackets mostly used slotted nuts with grooves on the outer circumference for locking. Newer bottom brackets mostly use internal spline nuts for fixing. This design improves stability and reliability, but also places higher demands on the tools used for installation and removal. Previously, mountain bike bottom bracket replacement tools were mostly single socket types without a matching handle, making operation very inconvenient, especially when applying large torques, as it was difficult for the user to apply force, making the bottom bracket replacement process quite difficult. Furthermore, because slotted nut bottom brackets and internal spline bottom brackets require different sockets for installation and removal, it is usually necessary to use an adjustable wrench or two different sized fixed wrenches to clamp the sockets separately to achieve rotation and installation / removal. This requires three to four tools to simultaneously assemble and disassemble both slotted nut and splined nut bottom brackets. These tools are not only numerous and small, making them prone to loss, but also require frequent tool changes during actual operation, significantly reducing assembly and disassembly efficiency and causing considerable inconvenience to users. Therefore, to address the aforementioned problems in the existing technology, it is necessary to invent a new type of mountain bike bottom bracket wrench that can be used for assembling and disassembling both slotted nut and splined nut bottom brackets, improving assembly and disassembly efficiency, simplifying tool types, and facilitating user operation. Summary of the Invention

[0003] The purpose of this utility model is to provide a mountain bike bottom bracket wrench to address the above-mentioned problems, thereby solving the technical problem that traditional mountain bike bottom bracket assembly and disassembly tools are not convenient for simultaneously assembling and disassembling slotted nut type bottom brackets and spline nut type bottom brackets.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A mountain bike bottom bracket wrench includes a handle, a slotted nut sleeve, and a splined nut sleeve. One end of the handle is provided with a handle end, and the other end is provided with a mounting end. The slotted nut sleeve is mounted on one end face of the mounting end, and the splined nut sleeve is mounted on the other end face of the mounting end.

[0006] Furthermore, the slotted nut sleeve is hollow inside, one end of the slotted nut sleeve is fixedly connected to the mounting end of the handle, and the other end of the slotted nut sleeve is provided with several protrusions corresponding to the slot of the slotted nut.

[0007] Furthermore, the protrusion is configured as two pieces, which are evenly distributed around the centerline of the slotted nut sleeve.

[0008] Furthermore, the spline nut sleeve is hollow inside, one end of the spline nut sleeve is fixedly connected to the mounting end of the handle, and the other end of the spline nut sleeve is provided with a spline corresponding to the spline groove of the spline nut on its outer circumferential surface.

[0009] Furthermore, the handle end is cylindrical and has a force-applying insertion hole.

[0010] Furthermore, the outer periphery of the handle end is provided with an anti-slip texture.

[0011] Furthermore, the handle, slotted nut sleeve, and splined nut sleeve are all made of stainless steel.

[0012] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model is applicable to both slotted nut type and spline nut type bottom bracket disassembly and assembly, eliminating the need for frequent tool changes, greatly improving efficiency, simplifying tool selection, and facilitating user operation. Users can quickly switch to the appropriate socket for disassembly and assembly according to actual needs, saving time and effort in finding and changing tools. It solves the technical problem that traditional mountain bike bottom bracket disassembly and assembly tools are not suitable for both slotted nut type and spline nut type bottom bracket disassembly and assembly.

[0014] 2. This utility model provides a force-adding hole at the handle end. When a larger torque is required, the user can insert the force-adding rod to easily apply sufficient torque to the bottom bracket nut. This solves the problem that users find it difficult to apply force when using a single socket tool to apply large torque, making the replacement process of the mountain bike bottom bracket smoother and less strenuous, and further improving the convenience and reliability of disassembly and assembly.

[0015] 3. The handle, slotted nut sleeve, and splined nut sleeve of this utility model are made of stainless steel, which has high strength and wear resistance, can withstand large torque and long-term wear, and extend the service life of the tool. At the same time, stainless steel also has good corrosion resistance, which allows the tool to maintain good performance in complex environments such as oil and moisture, further improving the practicality and durability of the tool. Attached Figure Description

[0016] Figure 1 This is a three-dimensional drawing of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] In the attached diagram, 1-handle, 2-slotted nut sleeve, 3-splined nut sleeve, 11-installation end, 12-handle end, 13-force-in socket, 14-anti-slip texture, 21-protrusion, 31-spline. Detailed Implementation

[0019] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0020] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Please see Figure 1 and Figure 2A mountain bike bottom bracket wrench includes a handle 1, a slotted nut sleeve 2, and a splined nut sleeve 3. One end of the handle 1 has a handle end 12, and the other end has a mounting end 11. The slotted nut sleeve 2 is mounted on one end face of the mounting end 11, and the splined nut sleeve 3 is mounted on the other end face. In use, the slotted nut sleeve 2 can be used for disassembling and assembling slotted nut bottom brackets, and the splined nut sleeve 3 can be used for disassembling and assembling splined nut bottom brackets. When wrenching is needed, one hand holds the handle end 12, and the other hand supports the sleeve end, causing the sleeve end to abut against the slotted nut or splined nut to prevent the sleeve from coming off. This eliminates the need for frequent tool changes, greatly improving disassembly and assembly efficiency, simplifying tool selection, and facilitating user operation. Users can quickly switch to the corresponding sleeve for disassembly and assembly operations according to actual needs, saving time and effort in finding and changing tools.

[0024] In this embodiment, the slotted nut sleeve 2 is hollow inside. One end of the slotted nut sleeve 2 is fixedly connected to the mounting end 11 of the handle 1, and the other end of the slotted nut sleeve 2 is provided with a plurality of protrusions 21 corresponding to the slot of the slotted nut. The hollow exterior can be used to make way for the central shaft, which facilitates the use of the slotted nut sleeve 2. Specifically, there are two protrusions 21, which are evenly distributed around the center line of the slotted nut sleeve 2.

[0025] In this embodiment, the spline nut sleeve 3 is hollow. One end of the spline nut sleeve 3 is fixedly connected to the mounting end 11 of the handle 1, and the other end of the spline nut sleeve 3 is provided with a spline 31 corresponding to the spline 31 groove of the spline 31 nut on its outer circumference. Specifically, the number of splines 31 is set to 8, 10, 12, 20 or 24, and in this embodiment it is set to 24.

[0026] In this embodiment, the handle end 12 is cylindrical and has a torque-applying insertion hole 13. The torque-applying insertion hole 13 on the handle end 12 allows for the insertion of a torque-applying rod when a larger torque is required, easily applying sufficient torque to the central shaft nut. In this embodiment, a thin-rod type torque-applying rod or a larger tubular type torque-applying rod can be used. The tubular type torque-applying rod can be fitted around the outer circumference of the handle end 12, expanding the range of torque-applying applications. Additionally, the outer circumference of the handle end 12 is provided with anti-slip texture 14 to prevent slippage during torque application or the tubular type torque-applying rod from dislodging, improving safety during use.

[0027] In this embodiment, the handle 1, the slotted nut sleeve 2, and the splined nut sleeve 3 are all made of stainless steel.

[0028] In the actual production process, you can purchase the existing slotted nut sleeve 2 and splined nut sleeve 3 on the market, and directly weld the slotted nut sleeve 2 and splined nut sleeve 3 to the opposite sides of one end of the handle 1. Then grind and polish the welded joint. This method has low raw material and cost and simple processing operation.

[0029] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A mountain bike spindle wrench, characterized by: It includes a handle, a slotted nut sleeve, and a splined nut sleeve. The handle has a handle end at one end and a mounting end at the other end. The slotted nut sleeve is mounted on one end face of the mounting end, and the splined nut sleeve is mounted on the other end face of the mounting end.

2. A mountain bike spindle wrench as defined in claim 1, wherein: The slotted nut sleeve is hollow inside. One end of the slotted nut sleeve is fixedly connected to the mounting end of the handle, and the other end of the slotted nut sleeve is provided with several protrusions corresponding to the slot of the slotted nut.

3. A mountain bike bottom bracket wrench according to claim 2, characterized in that: The protrusion is configured as two pieces, which are evenly distributed around the centerline of the slotted nut sleeve.

4. The mountain bike spindle wrench of claim 1, wherein: The spline nut sleeve is hollow inside. One end of the spline nut sleeve is fixedly connected to the mounting end of the handle, and the other end of the spline nut sleeve is provided with a spline corresponding to the spline groove of the spline nut on the outer circumferential surface.

5. The mountain bike spindle wrench of claim 1, wherein: The handle end is cylindrical and has a force-applying insertion hole.

6. A mountain bike spindle wrench as defined in claim 1, wherein: The outer periphery of the handle end is provided with an anti-slip texture.

7. The mountain bike spindle wrench of claim 1, wherein: The handle, slotted nut sleeve, and splined nut sleeve are all made of stainless steel.

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