Novel rod end bearing

Abstract

The utility model provides a novel rod end bearing which comprises a bearing outer ring, a rod body and a steel ball with a connecting hole, the bearing outer ring and the rod body are integrally connected, an installation groove is formed in the middle of the bearing outer ring in a penetrating mode, and the connecting hole is formed in the middle of the steel ball. The inner wall of the mounting groove is spherical, and the opening diameter of the two ends is smaller than the outer diameter of the steel ball; the edges of the left side and the right side of one end of the mounting groove extend towards the outer portions of the corresponding sides to form flaring grooves, and the maximum distance between the two flaring grooves is larger than or equal to the outer diameter of the steel ball, so that the steel ball can enter the mounting groove through the flaring grooves and is in contact fit with the mounting groove. The utility model has the characteristic of easy disassembly and assembly.

Description

Technical Field

[0001] The utility model relates to a rod end bearing, and in particular to a novel rod end bearing. Background Art

[0002] A spherical plain bearing consists of inner and outer rings with spherical sliding spherical contact surfaces, and is widely used in industries such as engineering hydraulic cylinders, forging machine tools, construction machinery, automation equipment, automotive shock absorbers, and water conservancy machinery, for low-speed oscillating motion, tilting motion, and rotational motion. In addition to the inner and outer rings, a rod end spherical plain bearing also has an external thread or an internal threaded rod end, which is used in conjunction with a threaded rod column.

[0003] When installing a traditional rod end spherical plain bearing, a lining needs to be sleeved on the outer ring of the bearing, and then the steel balls are pressed into the lining by force with additional tools. This installation method is time-consuming and laborious. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a novel rod end shaft, which has the characteristics of easy disassembly and assembly.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A novel rod end bearing includes an integrally connected bearing outer ring and a rod body, and steel balls with connection holes. A mounting groove is formed through the middle of the bearing outer ring, and the middle of the steel ball has a connection hole; the inner wall of the mounting groove is spherical, and the opening diameters at both ends are smaller than the outer diameter of the steel ball; on the left and right sides of one end of the mounting groove, flared grooves are formed by extending towards the outside of the corresponding side, and the maximum distance between the two flared grooves is greater than or equal to the outer diameter of the steel ball, so that the steel ball can enter the mounting groove through the flared groove and be in contact and cooperation with the mounting groove.

[0007] Preferably, when the steel ball enters the spherical groove, the central axis of the connection hole is perpendicular to the central axis of the mounting groove.

[0008] Preferably, the extension amount of the flared groove is 5 - 10 silk.

[0009] Preferably, the flared groove includes an arc surface and a transition table surface connecting the arc surface and the inner wall of the mounting groove.

[0010] Preferably, the transition table surface is inclined, and the inner side is higher than the outer side.

[0011] Preferably, the arc surface is inclined, and the extension amount gradually increases from the inside to the outside.

[0012] Preferably, the edge of the flared groove is provided with a chamfered fillet.

[0013] The technical effects of the present utility model are mainly reflected in the following aspects:

[0014] 1. The steel ball can be directly inserted into the installation groove, which is convenient for disassembly and assembly; and the steel ball will never rotate to an angle where it can escape after installation and use, so there is no need to worry about the steel ball falling out during the working process.

[0015] 2. The inner lining of the traditional rod end bearing is removed, which can reduce costs to a certain extent. And the inner wall of the installation groove is spherical, maintaining a large contact area with the steel ball, making the force between the bearing outer ring and the steel ball more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the bearing outer ring and the rod body in the embodiment;

[0017] Figure 2 It is a schematic diagram of the direction of placing the steel ball into the bearing outer ring in the embodiment;

[0018] Figure 3 It is a schematic diagram after the steel ball is placed into the bearing outer ring in the embodiment;

[0019] Figure 4 It is a schematic diagram after the steel ball is placed into the bearing outer ring and rotated in the embodiment.

[0020] Reference numerals: 1. Rod body; 2. Bearing outer ring; 21. Installation groove; 211. Opening; 22. Flared groove; 221. Arc surface; 222. Transition table; 3. Steel ball; 31. Connection hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further details the specific embodiments of the present utility model with reference to the drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0022] Refer to Figure 1 、 Figure 2 , this embodiment provides a new type of rod end bearing, including an integrally connected bearing outer ring 2 and rod body 1, and a steel ball 3 with a connection hole 31. The lower end of the rod body 1 has a threaded portion for connecting other components, which is prior art and will not be elaborated in this embodiment.

[0023] The middle of the bearing outer ring 2 is penetrated with an installation groove 21. The inner wall of the installation groove 21 is spherical, and the diameters of the openings 211 at both ends are smaller than the outer diameter of the steel ball 3.

[0024] The middle of the steel ball 3 has a connection hole 31 for connecting other components, which is prior art and will not be elaborated in this embodiment.

[0025] On the left and right sides of one end of the installation groove 21, the edges extend outward to the outside of the corresponding side to form flared grooves 22. The extension amount of the flared grooves 22 is 5-10 silk, and the edges of the flared grooves 22 are provided with rounded corners. The maximum distance A between the two flared grooves 22 is greater than or equal to the outer diameter of the steel ball 3, and it is preferably "greater than" in actual manufacturing to facilitate the entry of the steel ball 3.

[0026] The flared groove 22 includes an arc surface 221 and a transition table surface 222 connecting between the arc surface 221 and the inner wall of the installation groove 21. The transition table surface 222 is inclined, and the inner side is higher than the outer side; the arc surface is inclined, and the extension amount gradually increases from the inside to the outside. With the above settings, the installation process of the steel ball can be made smoother.

[0027] The specific installation process is as follows: Adjust the posture of the steel ball 3 so that "the central axis of the connection hole 31 is perpendicular to the central axis of the installation groove 21", and then along Figure 2 the direction indicated by the arrow, align the left and right ends of the steel ball 3 with the corresponding flared grooves 22 on the respective sides and directly insert them to the bottom (see Figure 3 ), at this time the steel ball 3 smoothly enters the installation groove 21 and is in contact and cooperation with the installation groove 21, and the steel ball 3 can rotate freely (see Figure 4 ). As long as the central axis of the connection hole 31 is no longer perpendicular to the central axis of the installation groove 21, the steel ball 3 will not fall out of the installation groove 21.

[0028] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A novel rod end bearing, comprising an integrally connected bearing outer ring (2) and a rod body (1), and a steel ball (3) with a connecting hole (31), wherein a mounting groove (21) is provided through the middle of the bearing outer ring (2), and a connecting hole (31) is provided in the middle of the steel ball (3); wherein: The inner wall of the installation groove (21) is spherical in shape, and the diameter of the openings (211) at both ends is smaller than the outer diameter of the steel ball (3); the left and right side edges of one end of the installation groove (21) extend toward the outside of the corresponding side to form an expansion groove (22), and the maximum spacing between the two expansion grooves (22) is greater than or equal to the outer diameter of the steel ball (3), so that the steel ball (3) can enter the installation groove (21) through the expansion groove (22) and contact and cooperate with the installation groove (21).

2. A new type of rod end bearing according to claim 1, characterized in that: When the steel ball (3) enters the spherical groove, the central axis of the connecting hole (31) is perpendicular to the central axis of the mounting groove (21).

3. A new type of rod end bearing according to claim 1 or 2, characterized in that: The extension amount of the expansion groove (22) is 5-10 threads.

4. A new type of rod end bearing according to claim 1 or 2, characterized in that: The expanded groove (22) comprises an arcuate surface (221) and a transition table surface (222) connected between the arcuate surface (221) and the inner wall of the installation groove (21).

5. A new type of rod end bearing according to claim 4, characterized in that: The transition table surface (222) is arranged in an inclined manner, and the inner side is higher than the outer side.

6. A new type of rod end bearing according to claim 4, characterized in that: The arc-shaped surface (221) is arranged in an inclined manner, and the extension amount gradually increases from the inside to the outside.

7. A new type of rod end bearing according to claim 1, characterized in that: The edge of the expansion groove (22) is rounded.

Images