Ratchet wheel structure

Abstract

The utility model provides a ratchet wheel structure which comprises a central part, a connecting part and a ratchet wheel part, the surface of the central part is fixedly provided with the connecting part which is integrally connected with the central part, the top end of the connecting part is fixedly provided with the ratchet wheel part, the side face of the connecting part is provided with auxiliary teeth matched with the ratchet wheel part, and the center of the central part is provided with an assembly hole. A plurality of arc-shaped protruding strips are fixedly arranged on the inner wall of the assembling hole at equal intervals. According to the ratchet wheel, the arc-shaped protruding strips are evenly distributed in the assembling hole, the assembling stability of the ratchet wheel and the connecting shaft is improved through the arrangement of the arc-shaped protruding strips, the ratchet wheel is matched with the ratchet wheel part through the auxiliary teeth formed in the connecting part, the maximum rotating angle of the ratchet wheel is controlled in the rotating process of the ratchet wheel, and the problem that the ratchet wheel is separated from the pawl is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ratchets and relates to a ratchet structure. Background Art

[0002] The ratchet is an important component of mechanical equipment, and the rotation and fixation of the mechanical equipment are achieved through the cooperation of the ratchet pawl.

[0003] After searching, according to the patent number "CN202646601U", a ratchet includes: a circular body with a through hole inside; ratchets arranged regularly around the edge of the body; the through hole is set at the axis of the body and passes through the body. Through this structure, the strength of the ratchet is effectively improved, and the load-bearing capacity of the ratchet is improved.

[0004] The above ratchet increases the strength of the pawl and improves the load-bearing capacity of the ratchet. However, when the ratchet is used, the design of the unlimited structure when the ratchet is connected to the assembly shaft affects the stability of the ratchet assembly. For this reason, we designed a ratchet structure. Summary of the invention

[0005] The purpose of the utility model is to provide a ratchet structure to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a ratchet structure, including a central part, a connecting part and a ratchet part, the surface of the central part is fixedly provided with a connecting part connected as an integral whole, the top of the connecting part is fixedly provided with a ratchet part, the side of the connecting part is provided with auxiliary teeth adapted to the ratchet part, an assembly hole is provided at the center of the central part, and a plurality of arc-shaped convex strips are fixedly provided on the inner wall of the assembly hole at equal intervals.

[0007] In the above-mentioned ratchet structure, annular grooves are provided on both sides of the connecting portion, and tension spring connecting holes adapted to the tension spring are provided on both ends of the connecting portion.

[0008] In the above ratchet structure, the thickness of the central portion is the same as the thickness of the ratchet portion.

[0009] In the above ratchet structure, the surface of the ratchet part is provided with evenly distributed ratchet grooves.

[0010] In the above ratchet structure, the central portion, the connecting portion and the ratchet portion are all made of carbon steel.

[0011] In the above-mentioned ratchet structure, the surfaces of the plurality of arc-shaped convex strips are provided with evenly distributed anti-slip grooves.

[0012] Compared with the prior art, the advantages of the ratchet structure of the utility model are as follows: the arc-shaped convex strips are evenly distributed inside the assembly hole, and the stability of the assembly of the ratchet and the connecting shaft is improved through the setting of the arc-shaped convex strips. The ratchet cooperates with the ratchet part through the auxiliary teeth opened on the connecting part. During the rotation of the ratchet, the maximum rotation angle of the ratchet is controlled, thereby avoiding the problem of separation between the ratchet and the pawl. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a ratchet structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the top structure of a ratchet structure of the utility model.

[0015] Figure 3 It is a front structural schematic diagram of a ratchet structure of the utility model.

[0016] Figure 4 It is a side structural schematic diagram of a ratchet structure of the utility model.

[0017] In the figure, 1, center part; 2, assembly hole; 3, arc-shaped convex strip; 4, connecting part; 5, ratchet part; 6, tension spring connecting hole; 7, annular groove; 8, auxiliary teeth. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1-4 As shown, the utility model provides a ratchet structure, comprising a central portion 1, a connecting portion 4 and a ratchet portion 5, the surface of the central portion 1 is fixedly provided with the connecting portion 4 which is connected as an integral whole, the top of the connecting portion 4 is fixedly provided with the ratchet portion 5, the side of the connecting portion 4 is provided with auxiliary teeth 8 which are adapted to the ratchet portion 5, an assembly hole 2 is provided at the center of the central portion 1, and a plurality of arc-shaped convex strips 3 are fixedly provided on the inner wall of the assembly hole 2 at equal intervals.

[0020] Specifically, by the arc-shaped convex strips 3 evenly distributed inside the assembly hole 2, the stability of the assembly between the ratchet and the connecting shaft is improved.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a ratchet structure, annular grooves 7 are provided on both sides of a connecting portion 4, and tension spring connecting holes 6 adapted to the tension spring are provided at both ends of the connecting portion 4.

[0022] Specifically, the arrangement of the tension spring connecting hole 6 facilitates the connection between the ratchet and one end of the tension spring.

[0023] The thickness of the central portion 1 is the same as the thickness of the ratchet portion 5 .

[0024] The surface of the ratchet portion 5 is provided with evenly distributed ratchet grooves.

[0025] Specifically, the ratchet groove is matched with the pawl, and the ratchet is driven to rotate by the pawl.

[0026] The central portion 1 , the connecting portion 4 and the ratchet portion 5 are all made of carbon steel.

[0027] Specifically, the ratchet structure processed from carbon steel has high strength and is wear-resistant, thereby increasing the service life of the ratchet.

[0028] The surfaces of the plurality of arc-shaped convex strips 3 are provided with evenly distributed anti-slip grooves.

[0029] Specifically, the anti-skid grooves provided on the surface of the arc-shaped convex strip 3 are used to increase the friction between the arc-shaped convex strip 3 and the connecting shaft, thereby further improving the stability of the ratchet assembly.

[0030] In specific implementation, when using the ratchet, the ratchet is first assembled with the connecting shaft. During the assembly process, the stability of the ratchet assembly is effectively ensured by the setting of the arc-shaped ridge 3 on the inner wall of the assembly hole 2. Then the ratchet is connected to one end of the tension spring through the tension spring connecting hole 6, which can facilitate the resetting of the ratchet. At the same time, an auxiliary tooth 8 is provided at one end of the connecting part 4. When the ratchet is rotated to the maximum angle, the auxiliary tooth 8 is provided to avoid the separation problem of the ratchet and the pawl.

[0031] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A ratchet structure, comprising a central portion (1), a connecting portion (4) and a ratchet portion (5), characterized in that: A connecting portion (4) is fixedly provided on the surface of the central portion (1) and connected as an integral unit; a ratchet portion (5) is fixedly provided at the top of the connecting portion (4); auxiliary teeth (8) matching the ratchet portion (5) are provided on the side of the connecting portion (4); an assembly hole (2) is provided at the center of the central portion (1); and a plurality of arc-shaped convex strips (3) are fixedly provided at equal intervals on the inner wall of the assembly hole (2).

2. A ratchet structure according to claim 1, characterized in that: Annular grooves (7) are provided on both sides of the connecting portion (4), and tension spring connecting holes (6) adapted to the tension spring are provided on both ends of the connecting portion (4).

3. A ratchet structure according to claim 1, characterized in that: The thickness of the central portion (1) is the same as the thickness of the ratchet portion (5).

4. A ratchet structure according to claim 1, characterized in that: The surface of the ratchet part (5) is provided with evenly distributed ratchet grooves.

5. A ratchet structure according to claim 1, characterized in that: The central portion (1), the connecting portion (4) and the ratchet portion (5) are all made of carbon steel.

6. A ratchet structure according to claim 1, characterized in that: The surfaces of the plurality of arc-shaped convex strips (3) are provided with evenly distributed anti-slip grooves.

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