Improved ultra-light bicycle barrel shaft lever

Abstract

The utility model discloses an improved ultralight bicycle barrel shaft lever, which is characterized by comprising a head part, a carbon fiber shaft lever and an external thread part, two ends of the carbon fiber shaft lever are respectively inserted into the head part and the external thread part, and the head part and the external thread part are respectively provided with a hexagonal shaft hole. A head screw hole and an external thread part screw hole for locking and fixing a locking screw and the carbon fiber shaft rod screw hole are respectively formed in the parts of the head part and the external thread part, which are used for inserting the carbon fiber shaft rod; the hexagonal shaft holes are formed in the two ends, so that assembling is more convenient, the weight can be effectively reduced through the carbon fiber shaft rods, a user can carry and use the bicycle conveniently, and light weight of the bicycle can be achieved easily.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle accessories, and particularly relates to an improved ultra-light bicycle thru-axle rod. Background Art

[0002] During the loading and unloading process of a bicycle wheel set on a bicycle frame and a front fork, a thru-axle rod is often used. In the existing conventional thru-axle rod, only one end has a hexagonal inner shaft hole for inserting a tool to rotate for loading and unloading, which brings inconvenience in use. Moreover, the whole thru-axle rod is made of metal material and most of its outer diameter is of equal diameter or slightly variable diameter, so the weight is relatively heavy. To solve such problems, the applicant has improved the thru-axle rod in the prior art. Both ends of the thru-axle rod have hexagonal shaft holes for inserting tools to rotate for loading and unloading, which is more convenient to use. The middle thru-axle is made of carbon fiber material and its outer diameter is more than one-third less than that of the conventional axle rod, effectively reducing the weight. Summary of the Invention

[0003] In view of this, the utility model provides an improved ultra-light bicycle thru-axle rod.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows: An improved ultra-light bicycle thru-axle rod, whose structure includes a head, a carbon fiber axle rod, and an external thread part. The two ends of the carbon fiber thru-axle rod are respectively inserted into the head and the external thread part.

[0005] The head is designed to be hollow, made of high-quality lightweight aluminum. The inner shaft hole of the limiting end is hexagonal. The shaft hole at the connecting end of the head is used for inserting the carbon fiber axle rod, and is provided with a head screw hole and a head locking screw. The head transition surface slopes from the inner annular surface to the outer annular surface from top to bottom.

[0006] The carbon fiber axle rod is designed to be hollow, and both ends are provided with carbon fiber axle rod screw holes for locking with the head and the external thread part.

[0007] The external thread part is designed to be hollow, made of high-quality lightweight aluminum. The inner shaft hole of the threaded end is hexagonal. The shaft hole at the connecting end of the external thread part is used for inserting the carbon fiber axle rod, and is provided with an external thread part screw hole and an external thread part locking screw. The external thread part transition surface slopes from the inner annular surface to the outer annular surface from top to bottom.

[0008] Compared with the prior art, the beneficial effect of the utility model is that both ends of the improved ultra-light bicycle thru-axle rod of the utility model have hexagonal shaft holes, and both ends can be used to insert tools for rotational installation, making the installation and disassembly more convenient. The middle uses a carbon fiber axle rod with a smaller outer diameter, which can effectively reduce the weight of the whole thru-axle rod. Brief Description of the Drawings

[0009] The following will describe the present utility model in detail with reference to the accompanying drawings to make the above advantages of the present utility model more clear.

[0010] Figure 1 is a schematic diagram of a combined improved ultra-light bicycle cartridge axle rod of the present utility model.

[0011] Figure 2 is a three-dimensional exploded schematic diagram of a combined improved ultra-light bicycle cartridge axle rod of the present utility model.

[0012] Figure 3 is a sectional view of the head of a combined improved ultra-light bicycle cartridge axle rod of the present utility model.

[0013] Figure 4 is a sectional view of the external thread part of a combined improved ultra-light bicycle cartridge axle rod of the present utility model.

[0014] In the figures: In the figures: 1 is the head, 2 is the carbon fiber axle rod, 3 is the external thread part, 1-1 is the limiting end, 1-2 is the head connection end, 1-3 is the inner shaft hole of the limiting end, 1-4 is the head screw hole, 1-5 is the head screw, 1-6 is the head transition surface, 2-1 is the carbon fiber axle rod head screw hole, 2-2 is the carbon fiber axle rod external thread part screw hole, 3-1 is the thread end, 3-2 is the external thread part connection end, 3-3 is the inner shaft hole of the thread end, 3-4 is the external thread part screw hole, 3-5 is the external thread part screw, 3-6 is the external thread part transition surface. Specific embodiments

[0015] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figures 1 to 4, which show an improved ultra-light bicycle cartridge axle rod of the present utility model, including a head (1), a carbon fiber axle rod (2), and an external thread part (3), wherein:

[0017] The head (1) is made of a metal material and is hollow. The head (1) is integrally formed into a limiting end (1-1) and a head connection end (1-2). The inner shaft hole (1-3) of the limiting end is hexagonal. The inside of the head connection end (1-2) is used to insert the carbon fiber axle rod (2). The head connection end has two or more head screw holes (1-4), and two or more head screws (1-5) are used to lock and fix the carbon fiber axle rod (2) to prevent it from falling off. The edge of the head connection end (1-2) facing the carbon fiber axle rod (2) has a head transition surface (1-6).

[0018] The carbon fiber shaft (2) is hollow and integrally formed of carbon fiber material. After applying structural adhesive to both ends, it is respectively inserted into the head connection end (1-2) and the external thread part connection end (3-2). The carbon fiber shaft head screw hole (2-1) is aligned with the head screw hole (1-4), and the carbon fiber shaft external thread part screw hole (2-2) is aligned with the external thread part screw hole (2-4). Then, the head screw (1-5) and the external thread part screw (2-5) are used for locking and fixing.

[0019] The external thread part (3) is made of metal material and is hollow. The external thread part (3) is integrally formed into a thread end (3-1) and an external thread part connection end (3-2). The inner shaft hole (3-3) of the thread end is hexagonal. The inside of the external thread part connection end (3-2) is used to insert the carbon fiber shaft (2). There are more than two external thread part screw holes (3-4) in the external thread part connection end (3-2). More than two external thread part screws (3-5) are used to lock and fix the carbon fiber shaft (2) to prevent it from falling off. There is an external thread part transition surface (3-6) at the edge of the external thread part connection end (3-2) facing the carbon fiber shaft (2).

[0020] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An improved ultra-light bicycle barrel shaft, comprising a head, a carbon fiber shaft, and an external threaded portion, characterized in that: The head and the external threaded part are respectively installed at the two ends of the carbon fiber shaft rod, and the head and the external threaded part are respectively inserted at the two ends of the carbon fiber shaft rod; the head is hollow in design, and the inner shaft hole at the limit end is hexagonal, and the shaft hole at the head connecting end is used to insert the carbon fiber shaft rod, and the head connecting end is provided with a head screw hole and a head locking screw, and the head transition surface is inclined from the inner annular surface to the outer annular surface; the external threaded part is hollow in design, and the inner shaft hole at the threaded end is hexagonal, and the shaft hole at the external threaded part connecting end is used to insert the carbon fiber shaft rod, and is provided with an external threaded part screw hole and an external threaded part locking screw, and the external threaded part transition surface is inclined from the inner annular surface to the outer annular surface.

2. The improved ultra-light bicycle barrel axle according to claim 1, characterized in that: The carbon fiber shaft is hollow in design, and carbon fiber shaft screw holes are provided at both ends for locking the heel portion and the external thread portion.

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