CN108488225B

CN108488225B - Self-locking bearing

Info

Publication number: CN108488225B
Application number: CN201810461412.3A
Authority: CN
Inventors: 顾学精
Original assignee: Jieshou City Anhui Jun Bearing Co Ltd
Current assignee: Jieshou City Anhui Jun Bearing Co Ltd
Priority date: 2018-05-15
Filing date: 2018-05-15
Publication date: 2020-01-24
Anticipated expiration: 2038-05-15
Also published as: CN108488225A

Abstract

The invention discloses a self-locking bearing and relates to the technical field of self-locking bearings. The invention comprises a bearing base, a ball structure and a bearing cover; the bottom surface of the bearing base is provided with a first annular channel with an arc-shaped cross section; the ball structure comprises a ball disc; a plurality of through holes are annularly and uniformly distributed on the ball disc; rolling balls are arranged in the through holes in a rolling manner; the inner bottom surface of the bearing cover is connected with the fixed plate through a plurality of springs; a second annular channel with an arc-shaped cross section is formed in one end face of the fixed plate; a plurality of arc-shaped grooves are annularly and uniformly distributed in the second annular channel; the ball structure is positioned in a closed space formed by the bearing base and the bearing cover. According to the invention, the spring is compressed in the process of matching the bearing base and the bearing cover in a threaded manner, the first annular channel and the second annular channel are fastened, and the arc-shaped groove in the second annular channel on the fixing plate is matched with the ball, so that the self-locking of the ball in the bearing is realized.

Description

Self-locking bearing

Technical Field

The invention belongs to the technical field of self-locking bearings, and particularly relates to a self-locking bearing.

Background

The Bearing (Bearing) is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. A one-way bearing is one that is free to rotate in one direction and locks in the other direction. The one-way bearing is also called as an overrunning clutch, and is named according to different industries and different functions. The metal shell of the one-way bearing contains a plurality of rollers, needles or balls, and the rolling seat (cavity) is shaped to roll only in one direction, but generate great resistance in the other direction.

The invention aims to provide a self-locking bearing, which is used for solving the problem that balls in the bearing cannot be self-locked and loose freely.

Disclosure of Invention

The invention aims to provide a self-locking bearing, which is characterized in that balls on a ball structure are arranged in a first annular groove and a second annular groove; and the ball is locked by the arc-shaped groove in the second annular groove channel through the extrusion of the second annular groove channel and the first annular groove channel, so that the problem that the ball in the existing bearing cannot be self-locked and is not flexible is solved.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a self-locking bearing which comprises a bearing base, a ball structure and a bearing cover;

the bearing base is cylindrical; the bottom surface of the bearing base is provided with a first shaft hole; a first annular channel with an arc-shaped cross section is formed in the bottom surface of the bearing base;

the ball structure comprises a ball disc; a plurality of through holes are annularly and uniformly distributed on the ball disc; the ball bearings are arranged in the through holes in a rolling manner; a second shaft hole is formed in the ball plate;

the bearing cover is cylindrical; the bottom surface of the bearing cover is provided with a third shaft hole; the inner bottom surface of the bearing cover is connected with the fixed plate through a plurality of springs; a second annular channel with an arc-shaped cross section is formed in one end face of the fixed plate; a plurality of arc-shaped grooves are annularly and uniformly distributed in the second annular channel; a fourth shaft hole is formed in the fixing plate;

the side wall of the bearing base is matched with the side wall of the bearing cover; the ball structure is positioned in a closed space formed by the bearing base and the bearing cover; the ball is positioned in the first annular channel; the ball is located in the second annular channel.

Preferably, the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole are coaxial and have the same diameter.

Preferably, the first annular channel and the second annular channel are identical; the arc diameter of the cross section of the first annular groove and the arc diameter of the cross section of the second annular groove are the same as the diameter of the ball.

Preferably, the periphery of the cylinder wall of the bearing base is provided with an internal thread; external threads are arranged on the periphery of the cylinder wall of the bearing cover; the bearing base is in threaded connection with the bearing cover; the spring is compressed in the process of matching the bearing base with the bearing cover in a threaded manner; and the arc-shaped groove in the second annular channel on the fixed plate is matched with the ball to realize the self-locking of the ball in the bearing.

Preferably, a plurality of springs are annularly and uniformly distributed and fixed on the bottom surface of the bearing cover; the diameter of the arc-shaped groove is the same as that of the ball; the number of the arc-shaped grooves is the same as that of the balls, and the radian between the two arc-shaped grooves is the same as that between the two balls.

The invention has the following beneficial effects:

1. according to the invention, the spring is compressed in the process of matching the bearing base and the bearing cover in a threaded manner, the first annular channel and the second annular channel are fastened, and the arc-shaped groove in the second annular channel on the fixing plate is matched with the ball, so that the self-locking of the ball in the bearing is realized;

2. a fixed shaft is fixedly arranged in a second shaft hole in a ball structure; when the bearing base is positioned above the rolling shaft structure, the rolling shaft in the ball structure rolls in the first annular groove channel, so that the friction force between the traditional bearing ball and the bearing ring is reduced, and the mechanical efficiency is improved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a self-locking bearing according to the present invention;

FIG. 2 is a schematic structural view of a bearing seat according to the present invention;

FIG. 3 is a schematic structural view of the ball structure of the present invention;

FIG. 4 is a schematic view of the construction of the bearing cap of the present invention;

FIG. 5 is a top view of FIG. 4;

fig. 6 is a cross-sectional view a-a of fig. 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "inner", "bottom", and the like, indicate orientations or positional relationships, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.

Referring to fig. 1-3, the present invention is a self-locking bearing, which includes a bearing base 1, a ball structure 2, and a bearing cover 3;

the bearing base 1 is cylindrical; the bottom surface of the bearing base 1 is provided with a first shaft hole 11; a first annular groove 12 with an arc-shaped cross section is formed in the bottom surface of the bearing base 1;

the ball structure 2 comprises a ball disc 21; a plurality of through holes 22 are uniformly distributed on the ball disc 21 in an annular manner; a ball 23 is arranged in the through hole 22 in a rolling way; the ball plate 21 is provided with a second shaft hole 24;

referring to fig. 4-6, the bearing cap 3 is cylindrical; the bottom surface of the bearing cover 3 is provided with a third shaft hole 31; the inner bottom surface of the bearing cover 3 is connected with a fixed plate 33 through a plurality of springs 32; a second annular groove 34 with an arc-shaped cross section is formed in one end face of the fixing plate 33; a plurality of arc-shaped grooves 35 are annularly and uniformly distributed in the second annular channel 34; the fixing plate 33 is provided with a fourth shaft hole 36;

the side wall of the bearing base 1 is matched with the side wall of the bearing cover 3; the ball structure 2 is positioned in a closed space formed by the bearing base 1 and the bearing cover 3; the balls 23 are located in the first annular channel 12; the balls 23 are located in the second annular channel 34.

Preferably, the first shaft hole 11, the second shaft hole 24, the third shaft hole 31 and the fourth shaft hole 36 are coaxial and have the same diameter; when the fixing shaft is used, the fixing shaft penetrates through the first shaft hole 11, the second shaft hole 24, the third shaft hole 31 and the fourth shaft hole 36 and is fixed with the second shaft hole 24; the bearing support 1 is located above the ball structure 2.

Preferably, the first annular channel 12 and the second annular channel 34 are identical; the arc diameter of the cross section of the first annular groove 12 and the arc diameter of the cross section of the second annular groove 34 are the same as the diameter of the ball 23; ensuring that the balls 23 roll in the first annular channel 12 and ensuring that the balls 23 mate with the second annular channel 34 when the bearing is self-locking.

Preferably, the circumference of the cylinder wall of the bearing base 1 is provided with internal threads; the periphery of the cylinder wall of the bearing cover 3 is provided with external threads; the bearing base 1 is in threaded connection with the bearing cover 3; when the bearing is self-locked, the bearing cover 3 is screwed to be matched with the thread of the bearing base 1; the arcuate slot 35 in the second annular channel 34 on the fixed plate 33 mates with the ball 23 to effect self-locking of the ball 23 in the bearing.

Preferably, a plurality of springs 32 are annularly and uniformly distributed and fixed on the bottom surface of the bearing cover 3; the diameter of the arc-shaped groove 35 is the same as that of the ball 23; the arc-shaped grooves 35 are the same as the balls 23 in number, the radian between the two arc-shaped grooves 35 is the same as the radian between the two balls 23, the arc-shaped grooves 35 and the balls 23 are ensured to be in one-to-one correspondence, and the arc-shaped grooves 35 are ensured to be correspondingly matched with the balls 23 in the self-locking process of the bearing.

In the description herein, references to the description of the term "detailed description" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-locking bearing comprises a bearing base (1), a ball structure (2) and a bearing cover (3), and is characterized in that,

the bearing base (1) is cylindrical; a first shaft hole (11) is formed in the bottom surface of the bearing base (1); a first annular channel (12) with an arc-shaped cross section is formed in the bottom surface of the bearing base (1);

the ball structure (2) comprises a ball disc (21); a plurality of through holes (22) are uniformly distributed on the ball plate (21) in an annular manner; a ball (23) is arranged in the through hole (22) in a rolling way; a second shaft hole (24) is formed in the ball plate (21);

the bearing cover (3) is cylindrical; a third shaft hole (31) is formed in the bottom surface of the bearing cover (3); the inner bottom surface of the bearing cover (3) is connected with a fixed plate (33) through a plurality of springs (32); a second annular channel (34) with an arc-shaped cross section is formed in one end face of the fixing plate (33); a plurality of arc-shaped grooves (35) are annularly and uniformly distributed in the second annular channel (34); a fourth shaft hole (36) is formed in the fixing plate (33);

the side wall of the bearing base (1) is matched with the side wall of the bearing cover (3) for installation; the ball structure (2) is positioned in a closed space formed by the bearing base (1) and the bearing cover (3); the balls (23) are located in the first annular channel (12); the balls (23) are located in the second annular channel (34).

2. The self-locking bearing according to claim 1, wherein the first shaft hole (11), the second shaft hole (24), the third shaft hole (31) and the fourth shaft hole (36) are coaxial and have the same diameter.

3. Self-locking bearing according to claim 1, wherein the first annular channel (12) and the second annular channel (34) are identical; the arc diameter of the cross section of the first annular groove (12) and the arc diameter of the cross section of the second annular groove (34) are the same as the diameter of the ball (23).

4. The self-locking bearing of claim 1, wherein the circumference of the cylinder wall of the bearing base (1) is provided with an internal thread; external threads are arranged on the periphery of the cylinder wall of the bearing cover (3); the bearing base (1) is in threaded connection with the bearing cover (3).

5. The self-locking bearing of claim 1, wherein a plurality of the springs (32) are annularly and uniformly fixed on the bottom surface of the bearing cover (3); the diameter of the arc-shaped groove (35) is the same as that of the ball (23); the number of the arc-shaped grooves (35) is the same as that of the balls (23), and the radian between the two arc-shaped grooves (35) is the same as that between the two balls (23).