CN210686662U

CN210686662U - Thin-wall bearing for robot

Info

Publication number: CN210686662U
Application number: CN201921817591.6U
Authority: CN
Inventors: 胡定一
Original assignee: Ningbo Ruichi Technology Co Ltd
Current assignee: Ningbo Ruichi Technology Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-05
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to the field of robot accessories, in particular to a thin-wall bearing for a robot, which comprises an outer ring, wherein the outer ring is connected with an inner ring through a retainer, balls are rotationally connected in the retainer, a sealing component is clamped between the outer ring and the inner ring, and the sealing component is symmetrically arranged at the upper side and the lower side of the retainer; the sealing assembly comprises a sealing ring plug which is connected with the outer ring and the inner ring in a sliding fit manner, sealing snap rings are arranged on the upper inner wall and the lower inner wall on the right side of the sealing ring plug, and the sealing snap rings are connected with the inner side wall of the outer ring and the sliding groove in the outer side wall of the inner ring in a sliding fit manner. The utility model provides a thin wall bearing for robot through the improvement to the sealed lid of current thin wall bearing, can improve thin wall bearing's leakproofness and stability, simultaneously, can carry out automatic lubrication grease that adds to the bearing through the reservoir, extension thin wall bearing's life.

Description

Thin-wall bearing for robot

Technical Field

The utility model relates to a robot accessory field especially relates to a thin wall bearing for robot.

Background

In recent years, robots are increasingly applied to industries, robot bearings play a vital role as an important connecting piece in robot manufacturing, and common robot bearings include thin-wall bearings, crossed cylindrical roller bearings, harmonic reducer bearings, joint bearings and the like.

The thin-wall bearing has the advantages of thin wall, small volume and light weight, and has the disadvantages of poor rigidity and easy deformation, so the sealing performance of the thin-wall bearing is particularly important.

However, in the existing market, the sealing cover of the thin-wall bearing is difficult to adapt to the particularity of the structure and the size of the thin-wall bearing, and the problem of overflow of lubricating grease is easy to occur, and the reduction of the lubricating grease can cause the temperature rise of the thin-wall bearing to be faster, even deformation is generated to directly influence the normal use of the thin-wall bearing, so that the sealing performance of the thin-wall bearing is very important, and further exploration and practice are needed for the sealing performance of the thin-wall bearing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing a thin-wall bearing for a robot, which is used for overcoming the problems of the existing thin-wall bearing; the sealing performance and the stability of the thin-wall bearing are improved, and the service life of the thin-wall bearing is further prolonged.

The utility model provides a technical scheme that above-mentioned technical problem adopted is: the thin-wall bearing for the robot comprises an outer ring, wherein the outer ring is connected with an inner ring through a retainer, balls are rotationally connected in the retainer, a sealing assembly is clamped between the outer ring and the inner ring, and the sealing assembly is symmetrically arranged on the upper side and the lower side of the retainer.

The sealing assembly comprises a sealing ring plug which is arranged between the outer ring and the inner ring in a sliding mode, a sealing snap ring is arranged on the upper inner wall and the lower inner wall on the right side of the sealing ring plug, the sealing snap ring is arranged in the inner side wall of the outer ring and in a sliding groove in the outer side wall of the inner ring in a sliding fit mode, and a sealing mechanism is uniformly arranged in the sealing snap ring along the circumferential direction of the sealing snap ring.

Preferably, the sealing mechanism comprises a Y-shaped backflow groove arranged in the sealing ring plug, the lower end of the Y-shaped backflow groove is communicated with a flow channel, the left end of the flow channel is communicated with a liquid storage groove, a rubber film is arranged between the liquid storage groove and the flow channel, and a liquid flowing hole is formed in the rubber film.

Preferably, seal ring stopper, seal snap ring are the rubber material, just the seal snap ring lower extreme left and right sides is laminated with the spout inner wall mutually, seal snap ring upper end is laminated with spout upper end inner wall mutually.

Preferably, the left end of the liquid storage tank is communicated with a liquid adding tank, and the left end of the liquid adding tank is provided with a sealing plug.

Preferably, the middle parts of the inner side wall of the outer ring and the outer side wall of the inner ring are of inclined structures gradually decreasing from two sides to the middle part.

Preferably, the rightmost side of the Y-shaped backflow groove is located on the left side of the seal retainer ring.

Compared with the prior art, the technical scheme of the utility model have following advantage:

1. the utility model provides a thin wall bearing for robot through the improvement to the sealed lid of current thin wall bearing, can improve thin wall bearing's leakproofness and stability, simultaneously, can carry out automatic lubrication grease that adds to the bearing through the reservoir, extension thin wall bearing's life.

2. The thin-wall bearing for the robot provided by the utility model can ensure the stability of the installation of the sealing assembly through the sealing snap ring, and can form a multi-level leakage-proof barrier by utilizing the joint of the sealing snap ring and the chute, thereby ensuring the sealing performance of the sealing assembly and avoiding the outflow of lubricating grease;

3. the utility model provides a thin wall bearing for robot, can be when the thin wall bearing temperature is higher through the reservoir, the grease is heated the inflation and is added in the bearing from the reservoir through the runner, realizes automatic lubricating grease that adds, and simultaneously, the grease also has certain heat absorption capacity, guarantees the stability of thin wall bearing during operation temperature;

4. the utility model provides a pair of thin wall bearing for robot, because the middle part of inner circle lateral wall is the slope structure that gradually reduces from both sides to the middle part, can ensure in lubricating grease assembles the slide of ball, realize with the abundant contact of ball, the guarantee ball is lubricated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention (the seal assembly is shown only on one half side);

fig. 2 is a cross-sectional view of the present invention shown in fig. 1;

fig. 3 is a schematic enlarged view of the Y-direction of fig. 2 according to the present invention.

Wherein: the device comprises an outer ring 1, a retainer 2, an inner ring 3, balls 4, a sealing assembly 5, a sealing ring plug 51, a sealing snap ring 52, a sliding groove 53, a sealing mechanism 54, a return groove 55Y-shaped, a flow channel 56, a liquid storage tank 57, a rubber film 58 and a liquid adding tank 59.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 3, the utility model provides a thin-walled bearing for robot, including outer lane 1, outer lane 1 is connected with inner circle 3 through holder 2, and the rotation is connected with ball 4 in holder 2, the joint has seal assembly 5 between outer lane 1 and the inner circle 3, and seal assembly 5 is symmetrical in the upper and lower both sides of holder 2 and sets up, and the middle part of outer lane 1 inside wall and inner circle 3 outside wall is the slope structure that gradually reduces from both sides to middle part; when the lubricating device works specifically, the middle part of the outer side wall of the inner ring 3 is of an inclined structure which gradually reduces from two sides to the middle part, so that lubricating grease can be guaranteed to be gathered in the slide way of the inner ring 3 to be in full contact with the balls 4, and the balls 4 can be lubricated.

The sealing assembly 5 comprises a sealing ring plug 51 which is slidably mounted between the outer ring 1 and the inner ring 3, sealing snap rings 52 are arranged on the upper inner wall and the lower inner wall on the right side of the sealing ring plug 51, the sealing snap rings 52 are arranged in sliding grooves 53 on the inner side wall of the outer ring 1 and the outer side wall of the inner ring 3 in a sliding fit mode, and sealing mechanisms 54 are uniformly arranged inside the sealing snap rings 52 along the circumferential direction of the sealing snap rings.

The sealing ring plug 51 and the sealing snap ring 52 are made of rubber, the left side and the right side of the lower end of the sealing snap ring 52 are attached to the inner wall of the sliding groove 53, and the upper end of the sealing snap ring 52 is attached to the inner wall of the upper end of the sliding groove 53; during specific work, because the left side wall, the right side wall and the upper side wall of the sealing snap ring 52 are attached to the inner side walls of the sliding groove 53, three-time pass is formed in the sliding groove 53 to prevent lubricating grease from flowing out, and meanwhile, two-time pass is formed by attaching the sealing snap ring 52 on the two sides of the sliding groove 53 to the outer ring 1 and the inner ring 3 to prevent lubricating grease from flowing out, so that the sealing performance of the sealing assembly 5 on the thin-wall bearing lubricating grease is greatly improved.

The sealing mechanism 54 comprises a Y-shaped reflux groove 55 arranged in the sealing ring plug 51, the rightmost side of the Y-shaped reflux groove 55 is positioned on the left side of the sealing snap ring 52, the lower end of the Y-shaped reflux groove 55 is communicated with a flow channel 56, the left end of the flow channel 56 is communicated with a liquid storage groove 57, a rubber film 58 is arranged between the liquid storage groove 57 and the flow channel 56, a liquid flow hole is formed in the rubber film 58, the left end of the liquid storage groove 57 is communicated with a liquid adding groove 59, and a sealing plug is arranged at the left end of the liquid adding groove 59; when the thin-wall bearing automatic feeding device works specifically, even if lubricating grease flows out through a checkpoint, the lubricating grease can enter the Y-shaped backflow groove 55 on the left side of the sealing snap ring 52 and then returns to the position of the ball 4 through the flow channel 56 to form a backflow channel, the outflow of the lubricating grease is avoided again, the sealing performance of the thin-wall bearing is further guaranteed, secondly, heat generated by the thin-wall bearing in use can be partially absorbed by the lubricating grease in the liquid storage tank 57 to keep the temperature of the thin-wall bearing stable, when the temperature of the bearing in continuous use is further increased, the lubricating grease in the liquid storage tank 57 is heated and expanded to be extruded from a liquid flowing hole in the rubber film 58 and enters the position of the ball 4 through the flow channel 56, and the purpose of automatically adding the lubricating grease in the thin.

The integral working steps are as follows:

and (4) lubrication of the ball bearing: because the middle part of the outer side wall of the inner ring 3 is of an inclined structure gradually decreasing from two sides to the middle part, lubricating grease can be guaranteed to be gathered in the slide way of the inner ring 3 to be in full contact with the ball 4, and the ball 4 can be guaranteed to be lubricated;

the sealing performance is improved: because the left side wall, the right side wall and the upper side wall of the sealing snap ring 52 are attached to the inner side wall of the sliding groove 53, three-time pass is formed in the sliding groove 53 to prevent lubricating grease from flowing out, and meanwhile, two-time pass is formed by attaching the sealing snap ring 52 on the two sides of the sliding groove 53 to the outer ring 1 and the inner ring 3 to prevent lubricating grease from flowing out, so that the sealing performance of the sealing assembly 5 on the lubricating grease of the thin-wall bearing is greatly improved;

and (4) guaranteeing the sealing performance again: even if lubricating grease flows out through the checkpoint, the lubricating grease enters the Y-shaped backflow groove 55 on the left side of the sealing snap ring 52 and returns to the position of the ball 4 through the flow passage 56 to form a backflow passage, so that the lubricating grease is prevented from flowing out again, and the sealing performance of the thin-wall bearing is further guaranteed;

automatic addition of lubricating grease: when the bearing is continuously used, the lubricating grease in the liquid storage tank 57 is heated and expanded, extruded out from the liquid flow hole on the rubber film 58 and enters the position of the ball 4 through the flow channel 56, and the purpose of automatically adding the lubricating grease in the thin-wall bearing is achieved.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a thin wall bearing for robot, includes outer lane (1), outer lane (1) is connected with inner circle (3) through holder (2), just holder (2) internal rotation is connected with ball (4), its characterized in that, the joint has seal assembly (5) between outer lane (1) and inner circle (3), just seal assembly (5) set up in the upper and lower bilateral symmetry of holder (2), wherein:

the sealing assembly (5) comprises a sealing ring plug (51) which is slidably mounted between the outer ring (1) and the inner ring (3), sealing snap rings (52) are arranged on the upper inner wall and the lower inner wall of the right side of the sealing ring plug (51), the sealing snap rings (52) are arranged in sliding grooves (53) on the inner side wall of the outer ring (1) and the outer side wall of the inner ring (3) in a sliding fit mode, and sealing mechanisms (54) are uniformly arranged in the sealing snap rings (52) along the circumferential direction;

the sealing mechanism (54) comprises a Y-shaped backflow groove (55) arranged in a sealing ring plug (51), the lower end of the Y-shaped backflow groove (55) is communicated with a flow channel (56), the left end of the flow channel (56) is communicated with a liquid storage groove (57), a rubber film (58) is arranged between the liquid storage groove (57) and the flow channel (56), and a liquid flowing hole is formed in the rubber film (58).

2. The thin-walled bearing for a robot as claimed in claim 1, wherein: the sealing ring plug (51) and the sealing snap ring (52) are made of rubber, the left side and the right side of the lower end of the sealing snap ring (52) are attached to the inner wall of the sliding groove (53), and the upper end of the sealing snap ring (52) is attached to the inner wall of the upper end of the sliding groove (53).

3. The thin-walled bearing for a robot as claimed in claim 1, wherein: the left end of the liquid storage tank (57) is communicated with a liquid adding tank (59), and the left end of the liquid adding tank (59) is provided with a sealing plug.

4. The thin-walled bearing for a robot as claimed in claim 1, wherein: the middle parts of the inner side wall of the outer ring (1) and the outer side wall of the inner ring (3) are of inclined structures which gradually decrease from two sides to the middle part.

5. The thin-walled bearing for a robot as claimed in claim 1, wherein: the rightmost side of the Y-shaped backflow groove (55) is located on the left side of the sealing clamping ring (52).