Plane ratchet wheel

Abstract

A ratchet wheel body of the plane ratchet wheel is annular and is divided into a ratchet wheel side end face and a bottom side end face, the bottom side end face is a plane, a wavy plane ratchet wheel structure is arranged on the surface of the ratchet wheel side end face, and the plane ratchet wheel structure is formed by connecting a plurality of fan-shaped plane ratchets in the same shape end to end. The plane ratchets are divided into ratchet planes and transition curved surfaces, the ratchet planes are kept horizontal, the height of the transition curved surfaces is gradually increased, the inclination of the transition curved surfaces is gradually increased, and for any two adjacent plane ratchets, the ratchet plane of one plane ratchet is connected with the transition curved surface of the other plane ratchet through the transition inclined surface. According to the utility model, the ratchet wheel, the pawl and the plane ratchet form surface contact, so that the plane ratchet wheel has better wear resistance under high load, and the larger contact area enables the plane ratchet wheel to be more stable when bearing impact and vibration, and the operation is smoother at the same time.

Description

Technical Field

[0001] The present invention relates to a plane ratchet used in the field of mechanical processing. Background Art

[0002] A ratchet is a mechanical device primarily used to control the direction of mechanical transmission and prevent reverse motion. It effectively prevents the load or mechanical components from rotating or sliding when an external force is applied. Ratchets are widely used in cranes, winches, and wrenches to prevent accidental loosening when force is applied. Existing ratchets have teeth distributed on the outer circumference of the ratchet, and the meshing of the pawl and teeth achieves one-way transmission and sliding locking. Due to their small contact area, conventional ratchets may wear under high loads, reducing their service life. They also have relatively low stability when subjected to shock and vibration. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a planar ratchet.

[0004] A technical solution to achieve the above-mentioned purpose is: a planar ratchet, including a ratchet body, the ratchet body is annular, divided into a ratchet side end face and a bottom side end face, the bottom side end face is a plane, and the surface of the ratchet side end face is provided with a wavy planar ratchet structure, the planar ratchet structure is composed of several fan-shaped planar ratchets of the same shape connected end to end, the planar ratchets are divided into ratchet planes and transition curved surfaces, the ratchet planes remain horizontal, the height of the transition curved surface gradually increases, and the slope gradually increases. For any two adjacent planar ratchets, the ratchet plane of one planar ratchet is connected to the transition curved surface of the other planar ratchet through a transition inclined surface.

[0005] Furthermore, the connection between the transition inclined surface, the ratchet plane and the transition curved surface is chamfered.

[0006] Furthermore, a ratchet mounting groove is provided on the outer circumferential surface of the ratchet body.

[0007] Furthermore, the inner circumference of the ratchet body is lifted toward the side end surface of the ratchet to form a guide protective wall.

[0008] Furthermore, the connection portion between the guide guard wall and the plane ratchet is chamfered.

[0009] Furthermore, the height of the planar ratchet is 2-3 mm.

[0010] The utility model provides a planar ratchet, in which the pawl forms surface contact with the planar ratchet teeth, and has good wear resistance under high loads. The larger contact area makes the planar ratchet more stable when subjected to impact and vibration, and the operation is generally smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1This is a schematic cross-sectional view of the structure of a planar ratchet of the present invention;

[0012] Figure 2 This is a side view of a planar ratchet tooth of a planar ratchet of the present invention;

[0013] Figure 3 This is a schematic top view of a planar ratchet tooth of a planar ratchet wheel according to the present invention. DETAILED DESCRIPTION

[0014] In order to better understand the technical solution of the present invention, the following is a detailed description through specific embodiments:

[0015] See also Figure 1 The utility model is a planar ratchet, whose ratchet body is annular and divided into a ratchet side end face 1 and a bottom side end face 2. The bottom side end face 2 is a plane, and the surface of the ratchet side end face is provided with a wavy planar ratchet structure 3.

[0016] See also Figure 2 and Figure 3 The planar ratchet structure 3 consists of several identical sector-shaped planar ratchet teeth connected end to end. The planar ratchet teeth are divided into a ratchet flat surface 31 and a transition curved surface 32. The ratchet flat surface 31 remains horizontal, while the transition curved surface 32 gradually increases in height and slope. For any two adjacent planar ratchet teeth, the ratchet flat surface 31 of one planar ratchet tooth is connected to the transition curved surface 32 of the other planar ratchet tooth by a transition inclined surface 33. The height d of the planar ratchet teeth is 2-3 mm.

[0017] Furthermore, in order to ensure that the pawl is not damaged during engagement, the connection between the transition inclined surface 33 and the ratchet plane 31 and the transition curved surface 32 is chamfered.

[0018] A ratchet mounting groove 4 is provided on the outer circumferential surface of the ratchet body.

[0019] The inner circumference of the ratchet body is raised toward the ratchet side end surface to form a guide guard wall 5. The connection between the guide guard wall 5 and the plane ratchet teeth is chamfered.

[0020] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A planar ratchet, comprising a ratchet body, characterized in that: The ratchet body is annular and is divided into a ratchet side end face and a bottom side end face. The bottom side end face is a plane. The surface of the ratchet side end face is provided with a wavy plane ratchet structure. The plane ratchet structure is composed of several fan-shaped plane ratchets of the same shape connected end to end. The plane ratchets are divided into ratchet planes and transition curved surfaces. The ratchet planes remain horizontal, and the height and slope of the transition curved surfaces gradually increase. For any two adjacent plane ratchets, the ratchet plane of one plane ratchet is connected to the transition curved surface of the other plane ratchet through a transition inclined surface.

2. A planar ratchet according to claim 1, characterized in that: The connection between the transition slope, the ratchet plane and the transition curved surface is chamfered.

3. A planar ratchet according to claim 1, characterized in that: A ratchet mounting groove is provided on the outer circumferential surface of the ratchet body.

4. A planar ratchet according to claim 1, characterized in that: The inner circumference of the ratchet body is lifted toward the side end surface of the ratchet to form a guide guard wall.

5. A planar ratchet according to claim 1, characterized in that: The connection between the guide guard wall and the plane ratchet is chamfered.

6. A planar ratchet according to claim 1, characterized in that: The height of the flat ratchet teeth is 2-3 mm.

Images