CN201925343U

CN201925343U - Linear bearing

Info

Publication number: CN201925343U
Application number: CN2010206831650U
Authority: CN
Inventors: 张迪科
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-16
Filing date: 2010-12-16
Publication date: 2011-08-10
Anticipated expiration: 2020-12-16

Abstract

The utility model relates to a linear bearing, in particular to a linear bearing with a compact and simple structure. A housing (2) adopts a tubular structure, wherein inward limit rings (1) are arranged at both ends of the housing (2) with the tubular structure respectively; each guard ring (4) adopts a tubular structure, wherein baffle rings (6) are arranged on the outer edges at both ends of the guard ring (4) with the tubular structure respectively, and three radial limit openings (5) are equidistantly formed at the middle of the tubular structure of the guard ring (4); and a plurality of balls (3) are arranged between the three limit openings (5) of the guard ring (4) and the inner wall of the housing (2), the balls (3) of the three limit openings (5) are contacted with a shaft (7) and in sliding fit with the shaft (7), and the guard rings (4) for mounting the balls (3) are combined in the housing (2) in the way of moving up and down. The linear bearing has the advantages of compact structure, reasonable design and convenience in processing, shortens the production period, improves the production efficiency and reduces the manufacturing cost.

Description

A kind of linear bearing

[technical field]

The utility model relates to a kind of linear bearing, especially relates to a kind of compact structure and linear bearing simple in structure.

[background technique]

Known, linear bearing is used for being used of unlimited stroke and cylinder axis in linear motion system, its role is to bearing ball and is with axle and contacts, so maneuvering load is very little.Steel ball rotates with minimum surface friction drag, thereby can obtain high-precision easy motion, and has the surface friction drag minimum, the precision height, and motion is quick.

Linear bearing roughly is divided into standard type linear bearing, gap regulation type linear bearing, open type linear bearing, extended type linear bearing, universal linear bearing etc.; Present linear bearing have a complex structure, manufacturing procedure is many, manufacture difficulty is big, the difficult control of tolerance grade, quality be cannot say for sure defectives such as card, so caused the process-cycle long, cost of production is higher relatively.

[summary of the invention]

In order to overcome the deficiency in the background technique, the utility model discloses a kind of linear bearing, linear bearing compact structure described in the utility model, reasonable in design, easy to process, shortened the manufacture cycle, improve manufacturing efficiency and reduced manufacture cost.

For achieving the above object, the utility model adopts following technological scheme:

A kind of linear bearing comprises overcoat, guard ring and ball, and described overcoat is a tubular structure, is respectively equipped with inside limited ring at the two ends of tubular structure overcoat; Described guard ring in tubular construction, outer rim is respectively equipped with baffle ring at the guard ring two ends of tubular structure, equidistantly is provided with three limit opening radially at the tubular structure of guard ring middle part; The baffle ring diameter of wherein said guard ring is less than the limited ring of overcoat, and the height of guard ring is less than two limited ring corresponding surface spacings of overcoat; The ball that is provided with a plurality of balls and three limit opening between the inwall of three limit opening of guard ring and overcoat touches and is slidingly matched with being coupling, and the guard ring of described installation ball upstream and downstream in overcoat forms complete linear bearing from cooperating.

Described linear bearing, the ball that is provided with between the inwall of the limit opening of guard ring and overcoat is at least two.

Described linear bearing, the height of described guard ring be overcoat two limited ring corresponding surface spacings 60～80%.

Owing to adopted technique scheme, the utlity model has following beneficial effect:

Linear bearing described in the utility model, use limited ring by being provided with to seal at the overcoat two ends, limited ring can be finished for the loose joint form by the arbitrary end of limited ring that is provided with at the overcoat two ends, just utilize welding, mode such as gluing is fixed one of them loose joint limited ring, between the inwall of three limit opening of guard ring and overcoat, a plurality of balls are set, preferred three balls of each limit opening, touch and be slidingly matched with being coupling by ball, realized the straightaway of axle, compact structure of the present utility model, reasonable in design, easy to process, shortened the manufacture cycle, improved manufacturing efficiency and reduced manufacture cost.

[description of drawings]

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an application structure schematic representation of the present utility model;

Among the figure: 1, limited ring; 2, overcoat; 3, ball; 4, guard ring; 5, limit opening; 6, baffle ring; 7, axle.

[embodiment]

Can explain the utility model in more detail by the following examples, the utility model is not limited to the following examples, and open the purpose of this utility model is intended to protect all changes and improvements in the utility model scope;

Linear bearing described in 1,2 comprises overcoat 2, guard ring 4 and ball 3 in conjunction with the accompanying drawings, and described overcoat 2 is a tubular structure, is respectively equipped with inside limited ring 1 at the two ends of tubular structure overcoat 2; Described guard ring 4 is respectively equipped with baffle ring 6 in the guard ring 4 two ends outer rims of tubular structure in tubular construction, equidistantly is provided with three limit opening 5 radially at the tubular structure middle part of guard ring 4; Baffle ring 6 diameters of wherein said guard ring 4 are less than the limited ring 1 of overcoat 2, and the height of guard ring 4 is less than two limited rings, the 1 corresponding surface spacing of overcoat 2,60～80% height of preferred two limited rings, 1 corresponding surface spacing; The ball 3 that is provided with at least two preferred three balls 3 and three limit opening 5 between the inwall of three limit opening 5 of guard ring 4 and overcoat 2 contact with axle 7 and is slidingly matched, the guard ring 4 of described installation ball 3 overcoat 2 in upstream and downstream from the complete linear bearing of cooperation formation.

Implement linear bearing described in the utility model, be provided with respectively at overcoat 2 two ends and seal with limited ring 1, between the inwall of three limit opening 5 of guard ring 4 and overcoat 2, a plurality of balls 3 are set, preferred three balls 3 in each limit opening 5 place, contact and be slidingly matched with axle 7 by ball 3, realized a straightaway of spools 7.

Claims

1. a linear bearing comprises overcoat (2), guard ring (4) and ball (3), and it is characterized in that: described overcoat (2) is a tubular structure, is respectively equipped with inside limited ring (1) at the two ends of tubular structure overcoat (2); Described guard ring (4) in tubular construction, outer rim is respectively equipped with baffle ring (6) at guard ring (4) two ends of tubular structure, equidistantly is provided with three limit opening (5) radially at the tubular structure of guard ring (4) middle part; Baffle ring (6) diameter of wherein said guard ring (4) is less than the limited ring (1) of overcoat (2), and the height of guard ring (4) is less than two limited rings (1) the corresponding surface spacing of overcoat (2); The ball (3) that is provided with a plurality of balls (3) and three limit opening (5) between the inwall of three limit opening (5) of guard ring (4) and overcoat (2) contacts with axle (7) and is slidingly matched, the guard ring (4) of described installation ball (3) overcoat (2) in upstream and downstream from cooperating the complete linear bearing of formation.

2. linear bearing according to claim 1 is characterized in that: the ball (3) that is provided with between the inwall of the limit opening (5) of guard ring (4) and overcoat (2) is at least two.

3. linear bearing according to claim 1 is characterized in that: the height of described guard ring (4) be overcoat (2) two limited rings (1) corresponding surface spacing 60～80%.