Barrel shaft rod with high structural strength

Abstract

The utility model discloses a cylinder shaft rod with high structural strength, which comprises a cylinder shaft rod body, one end of the cylinder shaft rod body is provided with a first end cover, the other end of the cylinder shaft rod body is provided with a second end cover, one end of the cylinder shaft rod body close to the second end cover is fixedly connected with a screw rod, and the inner wall of the cylinder shaft rod body is fixedly connected with a carbon fiber reinforcing layer. The barrel shaft rod body is made of a carbon fiber material, the end, close to the barrel shaft rod body, of the first end cover is fixedly connected with a first connecting rod, the end, close to the barrel shaft rod body, of the second end cover is fixedly connected with a second connecting rod, a through hole is formed in the barrel shaft rod body, the first connecting rod is arranged in the through hole, and a screw hole is formed in the first connecting rod; the outer side of the first connecting rod is sleeved with a plurality of backing rings, the outer side of the first connecting rod is sleeved with a plurality of rubber gaskets, the structural strength and durability of the barrel shaft rod body are remarkably improved, and the applicability of the barrel shaft rod is improved.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical shaft technology, specifically a cylindrical shaft with high structural strength. Background Technology

[0002] The thru-axle is a key component in bicycles and other vehicles that connects the wheels to the frame. It is responsible for supporting and stabilizing the wheels, ensuring that the wheels can be accurately positioned and maintain a stable operating state.

[0003] Traditional thru-axle materials, such as metals or alloys, while possessing a certain strength, may deform or break under long-term loads from the weight of the wheels and the frame, as well as the impact forces generated during riding. Secondly, although hub specifications are standardized, there is no uniform standard for the length between the frame and the front and rear forks, resulting in various thru-axle specifications that are not interchangeable. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength cylindrical shaft to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-strength cylindrical shaft, comprising a cylindrical shaft body, a first end cap at one end of the cylindrical shaft body, a second end cap at the other end of the cylindrical shaft body, a screw fixedly connected to the end of the cylindrical shaft body near the second end cap, a carbon fiber reinforcing layer fixedly connected to the inner wall of the cylindrical shaft body, and the cylindrical shaft body being made of carbon fiber; a first connecting rod fixedly connected to the end of the first end cap near the cylindrical shaft body, and a second connecting rod fixedly connected to the end of the second end cap near the cylindrical shaft body.

[0006] As a further preferred embodiment of this technical solution, the inner part of the cylindrical shaft body is provided with a through hole, the first connecting rod is disposed inside the through hole, the inner part of the first connecting rod is provided with a screw hole, a plurality of washers are sleeved on the outer side of the first connecting rod, and a plurality of rubber gaskets are sleeved on the outer side of the first connecting rod.

[0007] As a further preferred embodiment of this technical solution, the rubber gasket is disposed between the first end cap and the gasket ring, and the rubber gasket is disposed between adjacent gasket rings, wherein the diameter of the gasket ring is the same as the diameter of the cylinder shaft body.

[0008] As a further preferred embodiment of this technical solution, the surface of the second end cap is provided with a first annular groove, and the interior of the first annular groove is provided with an internal thread that matches the screw.

[0009] As a further preferred embodiment of this technical solution, one end of the second connecting rod is disposed inside the screw hole, and the surface of the second connecting rod is provided with an external thread that matches the screw hole.

[0010] As a further preferred embodiment of this technical solution, a sealing ring is fixedly connected to one end surface of the cylinder shaft body near the screw, and a second annular groove is formed on one end surface of the second end cover near the cylinder shaft body.

[0011] As a further preferred embodiment of this technical solution, an internal hexagonal hole is provided on one end surface of both the first end cap and the second end cap.

[0012] This utility model provides a high-strength cylindrical shaft, which has the following advantages:

[0013] (1) The main body of the thru-axle of this utility model is made of carbon fiber and has a carbon fiber reinforcement layer inside, which can significantly improve the structural strength and durability of the thru-axle body. At the same time, the lightweight characteristics of carbon fiber also help to reduce the overall weight of the bicycle and improve riding efficiency.

[0014] (2) This utility model extends the body of the thru-axle by setting a washer ring, which can be adjusted according to the length of the front and rear forks of different frames to meet the usage requirements of different frames and improve the applicability of the thru-axle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the cylindrical shaft of this utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of this utility model.

[0018] In the figure: 1. Cylindrical shaft body; 2. First end cap; 3. Second end cap; 4. Hexagonal socket; 5. Screw; 6. First connecting rod; 7. Second connecting rod; 8. Washer ring; 9. Rubber gasket; 10. First annular groove; 11. Second annular groove; 12. Carbon fiber reinforcement layer; 13. Screw hole; 14. Sealing ring. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figures 1-3As shown in this embodiment, a high-strength spool rod includes a spool rod body 1, a first end cap 2 at one end of the spool rod body 1, a second end cap 3 at the other end of the spool rod body 1, a screw 5 fixedly connected to the end of the spool rod body 1 near the second end cap 3, a carbon fiber reinforcing layer 12 fixedly connected to the inner wall of the spool rod body 1, and the spool rod body 1 is made of carbon fiber. A first connecting rod 6 is fixedly connected to the end of the first end cap 2 near the spool rod body 1, and a second connecting rod 7 is fixedly connected to the end of the second end cap 3 near the spool rod body 1. Since the spool rod body 1 is made of carbon fiber and has a carbon fiber reinforcing layer 12 inside, the structural strength and durability of the spool rod body 1 can be significantly improved. At the same time, the lightweight characteristics of carbon fiber also help to reduce the overall weight of the bicycle and improve riding efficiency. The spool rod body 1 is filled with the first connecting rod 6 and the second connecting rod 7, which increases the overall rigidity of the spool rod body 1.

[0021] The cylinder shaft body 1 has a through hole inside, the first connecting rod 6 is disposed inside the through hole, the first connecting rod 6 has a screw hole 13 inside, a number of washers 8 are sleeved on the outside of the first connecting rod 6, and a number of rubber gaskets 9 are sleeved on the outside of the first connecting rod 6.

[0022] A rubber gasket 9 is disposed between the first end cap 2 and the washer ring 8, and the rubber gasket 9 is disposed between adjacent washer rings 8. The diameter of the washer ring 8 is the same as the diameter of the spool body 1. By increasing the number of washer rings 8 on the first connecting rod 6, the overall length of the spool body 1 is extended so that the spool body 1 can meet the length requirements of the front and rear forks of different frames. The rubber gasket 9 not only provides shock absorption and cushioning, but also reduces wear and noise between the washer rings 8, improves the service life of the washer rings 8, and can also seal between the first end cap 2 and the spool body 1, or between the washer ring 8 and the spool body 1.

[0023] The surface of the second end cap 3 is provided with a first annular groove 10, and the interior of the first annular groove 10 is provided with an internal thread that matches the screw 5. The second end cap 3 is connected to the screw 5 through the first annular groove 10.

[0024] One end of the second connecting rod 7 is located inside the screw hole 13, and the surface of the second connecting rod 7 is provided with an external thread that matches the screw hole 13. The second connecting rod 7 is connected to the inside of the screw hole 13 through the external thread, thereby connecting the second connecting rod 7 with the first connecting rod 6. Thus, the first end cap 2 and the second end cap 3 can be fixed to both ends of the cylindrical shaft body 1.

[0025] A sealing ring 14 is fixedly connected to one end surface of the cylinder shaft body 1 near the screw 5. A second annular groove 11 is opened on one end surface of the second end cover 3 near the cylinder shaft body 1. The sealing ring 9 cooperates with the second annular groove 11 to seal the connection between the second end cover 3 and the cylinder shaft body 1, preventing dust and water from entering the cylinder shaft body 1.

[0026] Both the first end cap 2 and the second end cap 3 have an internal hexagonal hole 4 on one end surface. The internal hexagonal hole 4 is used by the user to rotate the first end cap 2 or the second end cap 3 with a tool to disassemble or assemble the first connecting rod 6 or the second connecting rod 7.

[0027] This utility model provides a high-strength cylindrical shaft rod. The specific working principle is as follows: During installation, the required number of washers 8 are first installed on the first connecting rod 6, and rubber gaskets 9 are installed between the washers 8, between the washers 8 and the first end cap 2, and between the washers 8 and the cylindrical shaft rod body 1. Then, the first connecting rod 6 is inserted into the through hole, and then the second connecting rod 7 is inserted into the through hole and contacts the first connecting rod 6. Then, the second end cap 3 is rotated so that the second connecting rod 7 is screwed into the screw hole 13 until the first annular groove 10 is connected to the screw rod 5. At this time, the first end cap 2 and the second end cap 3 are connected to both ends of the cylindrical shaft rod body 1.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high structural strength barrel shaft, comprising a barrel shaft body (1), characterized in that: One end of the barrel shaft body (1) is provided with a first end cover (2), the other end of the barrel shaft body (1) is provided with a second end cover (3), one end of the barrel shaft body (1) close to the second end cover (3) is fixedly connected with a screw rod (5), the inner wall of the barrel shaft body (1) is fixedly connected with a carbon fiber reinforcing layer (12), and the barrel shaft body (1) is made of carbon fiber material, the first end cover (2) is fixedly connected with a first connecting rod (6) at one end close to the barrel shaft body (1), and the second end cover (3) is fixedly connected with a second connecting rod (7) at one end close to the barrel shaft body (1).

2. A high strength mandrel according to claim 1, wherein: The barrel shaft body (1) is internally provided with a through hole, the first connecting rod (6) is arranged in the through hole, the first connecting rod (6) is internally provided with a threaded hole (13), the outer side of the first connecting rod (6) is sleeved with a plurality of packing rings (8), and the outer side of the first connecting rod (6) is sleeved with a plurality of rubber gaskets (9).

3. A high strength mandrel according to claim 2, wherein: The rubber gasket (9) is arranged between the first end cover (2) and the packing ring (8), and the rubber gasket (9) is arranged between adjacent packing rings (8), and the diameter of the packing ring (8) is the same as the diameter of the barrel shaft body (1).

4. The high structural strength spool shaft of claim 1 wherein: The surface of the second end cover (3) is provided with a first annular groove (10), and the first annular groove (10) is internally provided with an internal thread matched with the screw rod (5).

5. A high-strength mandrel according to claim 2, wherein: One end of the second connecting rod (7) is arranged in the threaded hole (13), and the surface of the second connecting rod (7) is provided with an external thread matched with the threaded hole (13).

6. A high strength mandrel shaft according to claim 1, wherein: The surface of one end of the barrel shaft body (1) close to the screw rod (5) is fixedly connected with a sealing ring (14), and the surface of one end of the second end cover (3) close to the barrel shaft body (1) is provided with a second annular groove (11).

7. A high strength mandrel shaft according to claim 1, wherein: The surface of one end of the first end cover (2) and the second end cover (3) is provided with an internal hexagonal hole (4).

Images