Bicycle barrel shaft lever

Abstract

The utility model provides a bicycle barrel shaft lever, relates to the technical field of bicycles, and solves the technical problem that a low-weight barrel shaft lever in the prior art is small in application range. The device comprises a barrel rod body and a stress part, the barrel rod body is provided with an axial through hole, the first end of the barrel rod body is a threaded end, the stress part is fixedly arranged at the second end of the barrel rod body, a tool position is arranged on the stress part, and the diameter of the through hole of the threaded end is smaller than that of the through hole of the other part. According to the barrel shaft rod, the stress part is independently arranged in the through hole in the other end of the threaded end to adapt to more vehicle types, the hole diameter of the through hole in the non-threaded end part is kept larger, the wall thickness is reduced, and therefore the weight of the barrel shaft rod is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a bicycle barrel shaft. Background Art

[0002] The thru-axle is an important component of a bicycle. Its main function is to lock the bicycle axle by passing through the center of the hub, ensuring stability and comfort during riding. At present, all thru-axles on the market are made of a single material using a single-side punching process. The materials include aluminum alloy and various titanium alloys. The thru-axle is a rod-shaped cylindrical structure. Usually, one end of the thru-axle is provided with an external thread for connecting to the bicycle body, and it also has a tool position for using a tool to screw the thru-axle. The tool position is usually a hexagonal hole. There are two types of thru-axles currently on the market. One is punched from the right side (conventional), and the tool position is made on the left side. The diameter of the hole of this type of thru-axle is limited by the external thread on the right side, which makes the wall thickness thicker and adds extra weight. The conventional right-side drilling diameter is limited, and the weight will not be less than 50g / pair; the strength redundancy is too large, and useless materials and weight cannot be reduced through processing. For this reason, another type of barrel axle rod has appeared on the market, which uses a process design in which the hole is punched on the left side and the tool is placed in the right-side thread. In this case, the external thread and the tool are at the same end. This method can effectively increase the overall inner diameter of the product, reduce the wall thickness, balance the strength of various parts, and reduce weight. However, some models on the market use a closed design on the right-side thread of the frame, and the barrel axle rod designed and processed by this process cannot be used, making the scope of application of this type of barrel axle rod limited. Utility Model Content

[0003] The purpose of this utility model is to provide a bicycle barrel axle that solves the technical problem of the limited applicability of low-weight barrel axles in the prior art. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by this utility model are described in detail below.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The bicycle barrel shaft provided by the utility model includes a barrel shaft body and a force-bearing part, the barrel shaft body has an axial through hole, the first end of the barrel shaft body is a threaded end, the second end of the barrel shaft body is fixedly provided with the force-bearing part, the force-bearing part has a tool position, and the diameter of the through hole of the threaded end part is smaller than the diameter of the through hole of the remaining part.

[0006] Preferably, the force-bearing portion is an annular body, the outer wall of the force-bearing portion is fixedly connected to the inner wall of the through hole at the second end, and the inner hole of the force-bearing portion is the polygonal tool position.

[0007] Preferably, it further comprises a limiting portion, which is arranged on the force-bearing portion and the inner wall of the through hole.

[0008] Preferably, the limiting portion includes a limiting groove and a limiting protrusion arranged along the axial direction of the barrel rod body, one of the limiting groove and the limiting protrusion is arranged on the inner wall of the through hole at the second end, and the other is arranged on the outer wall of the force-bearing portion, and the limiting groove and the limiting protrusion are arranged in a one-to-one correspondence.

[0009] Preferably, the limiting grooves are multiple and arranged along the circumferential direction of the inner wall of the through hole, and one end of the limiting groove is located on the end face of the second end, and the limiting protrusions are multiple and arranged along the circumferential outer wall of the force-bearing part.

[0010] Preferably, the force-bearing portion is bonded to the inner wall of the through hole.

[0011] Preferably, the tool bit is a hexagonal socket.

[0012] Preferably, the barrel rod body is made of titanium alloy, and the force-bearing part is made of aluminum alloy.

[0013] This application adopts the above technical solution, which has at least the following beneficial effects:

[0014] The bicycle barrel shaft includes a barrel shaft body and a force-bearing part. The barrel shaft body has an axial through hole. The first end of the barrel shaft body is a threaded end for connecting with a bicycle. The second end of the barrel shaft body is fixed with the force-bearing part, and the force-bearing part is used to apply external force to provide a tool position. The force-bearing part has a tool position. The diameter of the through hole of the threaded end is smaller than the diameter of the through hole of the remaining part, thereby ensuring a thinner wall thickness of the barrel shaft and reducing the weight of the barrel shaft. In combination with the force-bearing part and the threaded end being arranged at both ends, it can adapt to more vehicle models while ensuring a lower weight of the barrel shaft.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall cross-sectional structure of a bicycle barrel shaft provided by an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of an exploded cross-sectional structure of a bicycle barrel shaft provided by an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of a bicycle barrel shaft provided by an embodiment of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the exploded structure of a bicycle barrel shaft provided by an embodiment of the present invention.

[0021] In the figure, 1, barrel rod body; 2, force-bearing part; 3, through hole; 4, threaded end; 5, tool position; 6, limiting part; 7, limiting groove; 8, limiting protrusion. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] The specific embodiment of the utility model provides a bicycle barrel shaft rod, combined with the attached Figure 1 -Attached Figure 4 ,

[0024] It mainly includes a barrel rod body 1 and a force-bearing part 2. The barrel rod body 1 has an axial through hole 3. The first end of the barrel rod body 1 is a threaded end 4. The second end of the barrel rod body 1 is fixedly provided with the force-bearing part 2. The force-bearing part 2 has a tool position 5. The diameter of the through hole 3 of the threaded end 4 is smaller than the diameter of the through hole 3 of the rest of the part.

[0025] The force-bearing portion 2 is provided on one end of the barrel shaft body 1 away from the threaded end 4. The technical solution that the force-bearing portion 2 and the threaded end 4 belong to different ends can make this bicycle barrel shaft rod applicable to more models of bicycles; the scope of use is wider, and the structural strength of the second end of the barrel shaft rod 1 is ensured by the independently provided force-bearing portion 2 in this application, thereby meeting the need for preload, and the inner diameter of the through hole 3 with only the threaded end 4 in this application is smaller, thereby ensuring the structural strength of the threaded end 4 and making the connection with the bicycle more reliable, while also ensuring that the wall thickness of the remaining part is thinner, thereby reducing the weight of the bicycle barrel shaft rod and meeting basic needs. Of course, the thin wall thickness of the remaining part of the barrel shaft rod 1 in this application is designed under the premise of meeting the load-bearing requirements of the bicycle barrel shaft rod.

[0026] In the specific embodiment of the present application, the force-bearing portion 2 is an annular body, the outer wall of the force-bearing portion 2 is fixedly connected to the inner wall of the through hole 3 at the second end, and the inner hole of the force-bearing portion 2 is a polygonal tool position 5.

[0027] The use of an annular force-bearing portion 2 further reduces the weight of the bicycle barrel axle. Force-bearing portion 2 is disposed within a through-hole 3 at the second end and is fixedly connected to the through-hole 3, ensuring that force-bearing portion 2 does not move relative to the barrel axle body 1 during force application, ensuring sufficient preload can be applied. Furthermore, the inner hole of force-bearing portion 2 can be a polygonal tool holder 5, which can be a hexagonal socket commonly used in this field, further improving the universality of bicycle barrel axles.

[0028] In some embodiments, a limiting portion 6 is further included, and the limiting portion 6 is arranged on the force-bearing portion 2 and the inner wall of the through hole 3 .

[0029] The limiting portion 6 is provided to limit the relative movement between the force-bearing portion 2 and the barrel rod body 1. In actual installation, the force-bearing portion 2 and the through-hole 3 are often connected by friction with a relatively small tolerance. However, when a large torque is applied, there is a possibility that the force-bearing portion 2 and the barrel rod body 1 may rotate relative to each other. Therefore, in this application, cold welding glue can also be used to bond the force-bearing portion 2 to the inner wall of the through-hole 3 to further increase the connection strength. In other embodiments, the limiting portion 6 can also be provided to limit the relative rotation of the force-bearing portion 2 and the barrel rod body 1.

[0030] For this purpose, the limiting part 6 in the present application includes a limiting groove 7 and a limiting protrusion 8 arranged axially along the barrel rod body 1. One of the limiting groove 7 and the limiting protrusion 8 is arranged on the inner wall of the through hole 3 at the second end, and the other is arranged on the outer wall of the force-bearing part 2. The limiting groove 7 and the limiting protrusion 8 are arranged in a one-to-one correspondence.

[0031] For example, the limiting groove 7 can be set on the inner wall of the through hole 3 at the second end, and the limiting protrusion 8 can be set on the outer wall of the force-bearing part 2; or the limiting groove 7 can be set on the outer wall of the force-bearing part 2, and the limiting protrusion 8 can be set on the inner wall of the through hole 3 at the second end.

[0032] In some embodiments, there are multiple limiting grooves 7 and they are arranged circumferentially along the inner wall of the through hole 3, and one end of the limiting groove 7 is located on the end face of the second end, and there are multiple limiting protrusions 8 and they are arranged along the circumferential outer wall of the force-bearing part 2.

[0033] The number of limiting grooves 7 and limiting protrusions 8 are both arranged in multiples, which further increases the circumferential limiting strength between the force-bearing part 2 and the barrel rod body 1. At the same time, the limiting grooves 7 and limiting protrusions 8 can be distributed on the inner wall of the through hole 3 and the circumferential outer wall of the force-bearing part 2 in a uniform or non-uniform manner.

[0034] In a specific embodiment of the present application, the barrel rod body 1 may be made of titanium alloy, while the force-bearing portion 2 may be made of aluminum alloy.

[0035] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0036] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A bicycle barrel axle, characterized in that: It includes a barrel rod body and a force-bearing part, the barrel rod body has an axial through hole, the first end of the barrel rod body is a threaded end, the second end of the barrel rod body is fixedly provided with the force-bearing part, the force-bearing part has a tool position, and the diameter of the through hole of the threaded end part is smaller than the diameter of the through hole of the remaining part.

2. The bicycle barrel shaft according to claim 1, characterized in that: The force-bearing portion is an annular body, the outer wall of the force-bearing portion is fixedly connected to the inner wall of the through hole at the second end, and the inner hole of the force-bearing portion is the polygonal tool position.

3. The bicycle barrel axle according to claim 2, characterized in that: It also includes a limiting portion, which is arranged on the force-bearing portion and the inner wall of the through hole.

4. The bicycle barrel axle according to claim 3, characterized in that: The limiting portion includes a limiting groove and a limiting protrusion arranged along the axial direction of the barrel rod body. One of the limiting groove and the limiting protrusion is arranged on the inner wall of the through hole at the second end, and the other is arranged on the outer wall of the force-bearing portion. The limiting groove and the limiting protrusion are arranged in a one-to-one correspondence.

5. The bicycle barrel axle according to claim 4, characterized in that: There are multiple limiting grooves and they are arranged along the circumferential direction of the inner wall of the through hole, and one end of the limiting groove is located on the end surface of the second end. There are multiple limiting protrusions and they are arranged along the circumferential outer wall of the force-bearing part.

6. The bicycle barrel axle according to any one of claims 2 to 5, characterized in that: The force-bearing portion is bonded to the inner wall of the through hole.

7. The bicycle barrel axle according to claim 2, characterized in that: The tool position is a hexagonal hole.

8. The bicycle barrel axle according to claim 1, characterized in that: The barrel rod body is made of titanium alloy, and the force-bearing part is made of aluminum alloy.

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