CN112610601A

CN112610601A - Linear bearing

Info

Publication number: CN112610601A
Application number: CN202011472146.8A
Authority: CN
Inventors: 李小刚
Original assignee: Shanghai C&u Double Row Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Shanghai C&u Double Row Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-04-06

Abstract

The invention relates to a linear bearing, belonging to the bearing technical field, comprising a retainer component, wherein the retainer component consists of a main retainer with a guide pocket and a window hole with an outer diameter embedded with a raceway and two retainer covers connected with the window hole on the main retainer through a convex point, the outer diameter window hole of the main retainer is embedded with a metal linear raceway, the metal linear raceway and the main retainer form a loop pocket, rolling bodies are linearly arranged in the metal linear raceway, the rolling bodies are provided with a loop in the pocket hole of the retainer component, so that the requirement of the mechanism for linear reciprocating motion can be realized by connecting a moving shell and a mandrel, meanwhile, the rolling bodies are linearly arranged in the metal linear raceway, the rolling bodies are provided with a loop in the pocket hole of the retainer component, so that the structure of the linear motion is simple, the volume is small.

Description

Linear bearing

Technical Field

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

Background

The bearing is an important part in the modern mechanical equipment and is widely used. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision.

The existing linear bearing has some defects in the using process, firstly, the using occasions of the existing bearing are more and more wide, the bearing capable of linearly reciprocating is required to be functionally required, and then the bearing can axially reciprocate, secondly, most of the existing bearings are required to be composed of a bearing outer ring, a retainer, steel balls and the like, the size and the weight are large, and the size and the weight of the bearing can not be lightened due to the use of the bearing outer ring.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a linear bearing.

The invention provides a linear bearing which comprises a retainer assembly, wherein the retainer assembly consists of a main retainer and two retainer covers, wherein the main retainer is provided with a guide pocket and a window hole with an embedded raceway on the outer diameter, the two retainer covers are connected with the window hole on the main retainer through a convex point, the window hole on the outer diameter of the main retainer is embedded with a metal linear raceway, the metal linear raceway and the main retainer form a loop pocket, rolling bodies are linearly arranged in the metal linear raceway, and a loop is arranged in the pocket of the retainer assembly by the rolling bodies.

The beneficial effect who so sets up is: by adopting the scheme, the metal linear roller path is inlaid in the outer diameter window hole of the main retainer, the metal linear roller path and the main retainer form the loop pocket hole, the rolling bodies are linearly arranged in the metal linear roller path, the rolling bodies are arranged in the pocket hole of the retainer assembly, so that the requirement of the linear reciprocating motion of the mechanism for connecting the motion shell and the mandrel can be met, and meanwhile, the rolling bodies are linearly arranged in the metal linear roller path and are arranged in the pocket hole of the retainer assembly, so that the linear motion is simple in structure and small in size.

The invention is further arranged such that the rolling elements form bearing areas with the spindle and the raceway.

The beneficial effect who so sets up is: by adopting the scheme, the rolling body, the mandrel and the raceway form a bearing area so as to bear the axial force.

The invention is further provided that the main retainer is in interference fit with the bearing seat, and the bearing seat adopts a combined sealing structure.

The beneficial effect who so sets up is: by adopting the scheme, the main retainer is matched with the bearing seat by adopting interference fit, so that the main retainer can be effectively and firmly fixed on the inner surface of the bearing seat.

The invention is further arranged that the combined sealing structure adopts a plastic shell and a sponge interlayer.

The beneficial effect who so sets up is: through the combined sealing structure adopts the plastic shell and the sponge interlayer, the dustproof sealing effect can be effectively realized.

The invention is further provided that the rolling bodies are arranged in the closed space formed by the retainer component and the metal linear raceway.

The beneficial effect who so sets up is: by adopting the scheme, the rolling bodies are arranged in the closed space formed by the retainer component and the metal linear roller path, so that the balls can not fall out effectively.

The main cage, the cage cover, and the rolling elements are made of alloy steel.

The beneficial effect who so sets up is: by adopting the scheme, the bearing capacity of the bearing can be effectively improved by adopting the alloy steel materials for the main retainer, the retainer cover and the rolling body.

The invention further provides that the outer surface of the rolling body is coated with a lubricating graphitic carbon.

The beneficial effect who so sets up is: friction is effectively reduced by coating the outer surface of the rolling element with a lubricating graphitic carbon.

Drawings

FIG. 1 is a schematic diagram of the overall explosive structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the primary retainer structure of the present invention;

FIG. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is an overall half sectional view of the present invention;

FIG. 6 is a left side view of the primary retainer of the present invention;

FIG. 7 is a left side view of the primary retainer of the present invention;

in the figure: 1. retainer assembly, 11, main retainer, 111, guide pocket, 112, window hole, 12, bump, 13, retainer cover, 2, metal linear raceway, 3, loop pocket, 4, rolling body, 5, mandrel.

Detailed Description

As can be seen from fig. 1 to 7, the present invention discloses a linear bearing, which comprises a cage assembly 1, wherein the cage assembly 1 comprises a main cage 11 having a guide pocket 111 and a window 112 with an outer diameter of an embedded raceway, and two cage covers 13 connected to the window 112 on the main cage 11 through bumps 12, the outer diameter window 112 of the main cage 11 is embedded with a metal linear raceway 2, the metal linear raceway 2 and the main cage 11 form a loop pocket 3, rolling bodies 4 are linearly arranged in the metal linear raceway 2, the rolling bodies 4 are provided with a loop in the pocket of the cage assembly 1, by adopting the above scheme, the metal linear raceway 2 is embedded in the outer diameter window 112 of the main cage 11, the metal linear raceway 2 and the main cage 11 form a loop pocket 3, the rolling bodies 4 are linearly arranged in the metal linear raceway 2, the rolling bodies 4 are arranged in the pockets of the retainer component 1, so that the requirement of linear reciprocating motion of a mechanism can be met by connecting the moving shell and the mandrel 5, meanwhile, the rolling bodies 4 are linearly arranged in the metal linear roller path 2, and the rolling bodies 4 are arranged in the pockets of the retainer component 1, so that the linear motion is simple in structure and small in size.

The rolling body 4, the mandrel 5 and the raceway form a bearing area, and by adopting the scheme, the rolling body 4, the mandrel 5 and the raceway form the bearing area to further bear the axial force.

The main retainer 11 and the bearing seat are in interference fit, the bearing seat is in a combined sealing structure, and the main retainer 11 and the bearing seat are in interference fit, so that the main retainer 11 can be effectively and firmly fixed on the inner surface of the bearing seat.

The combined sealing structure adopts the plastic shell and the sponge interlayer, and the combined sealing structure can effectively play a role in dustproof sealing by adopting the plastic shell and the sponge interlayer.

The rolling body is arranged in a closed space formed by the retainer component 1 and the metal linear raceway 2, and by adopting the scheme, the rolling body 4 is arranged in the closed space formed by the retainer component 1 and the metal linear raceway 2, so that balls can not fall out effectively.

The main cage 11, the cage cover 13 and the rolling elements 4 are made of alloy steel, and by adopting the scheme, the bearing capacity of the bearing can be effectively improved by adopting the alloy steel for the main cage 11, the cage cover 13 and the rolling elements 4.

The outer surface of the rolling body 4 is coated with lubricating graphite carbon, and friction can be effectively reduced by coating the outer surface of the rolling body 4 with lubricating graphite carbon.

The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the scope of the invention, and therefore, equivalent variations, such as equivalent products using similar processes and similar structures, which are encompassed by the present invention are considered to be within the scope of the present invention.

Claims

1. A linear bearing comprising a retainer assembly, characterized in that: the retainer assembly comprises a main retainer with a guide pocket and a window hole with an embedded raceway on the outer diameter, and two retainer covers connected with the window hole on the main retainer through a convex point, wherein the window hole on the outer diameter of the main retainer is embedded with a metal linear raceway, the metal linear raceway and the main retainer form a loop pocket, rolling bodies are linearly arranged in the metal linear raceway, and the rolling bodies form a loop in the loop pocket of the retainer assembly.

2. The linear bearing of claim 1, wherein: the rolling bodies, the mandrel and the metal linear roller path form a bearing area.

3. The linear bearing of claim 1, wherein: the main retainer is in interference fit with the bearing seat, and the bearing seat is in a combined sealing structure.

4. A linear bearing according to claim 3, wherein: the combined sealing structure adopts a plastic shell and a sponge interlayer.

5. The linear bearing of claim 1, wherein: the rolling bodies are arranged in a closed space formed by the retainer component and the metal linear raceway.

6. The linear bearing of claim 1, wherein: the main cage, the cage cover, and the rolling elements are made of alloy steel.

7. The linear bearing of any one of claims 1-6, wherein: the outer surface of the rolling body is coated with lubricating graphite carbon.