CN1807909A

CN1807909A - Straight line bearing

Info

Publication number: CN1807909A
Application number: CN 200510038144
Authority: CN
Inventors: 梁忠; 蒋含斌
Original assignee: 陈锡生
Priority date: 2005-01-17
Filing date: 2005-01-17
Publication date: 2006-07-26

Abstract

The invention relates to a straight bearing. The transmission axle mounted on the invention can rotate with oscillating straight motion. And the abrasion of bearing is little, the service life is longer, and it is characterized in that: it comprises a square inner ring mounted on the square groove of outer sheath; the center of said inner ring has a round through hole which is vertical to the groove bottom of said square groove; the interlayer between the inner ring and the outer sheath mounted besides the through hole and the interlayer between the inner ring and the groove bottom of said outer sheath have a support with rolling post; the cylinder surface of said rolling post contacts the inner surface of said outer sheath and the outer surface of inner ring; the case is sheathed with the open end of square groove to opposite to the through hole; the bottom of case has a rectangle through hole whose width is bigger than the diameter length of cylinder through hole of said inner ring and shorter than the distance between two parallel side surfaces of inner ring.

Description

Linear bearing

(1) technical field

The present invention relates to established line bearing, be specially linear bearing.

(2) background technique

At machinery assembling and transmission field, adopt the ball ball bearing to realize installation between transmission shaft and the axle bed mostly.And rotate in axle bed usually the outer ring of transmission shaft and ball ball bearing, and the axle bed of some transmission device is used for bearings mounted hole is the long strip slotted eye, do reciprocating linear motion along axle bed when requiring transmission shaft to rotate, because the outer ring of ball ball bearing is that line contacts with axle bed, in the process that bearing moves not steadily, noise is bigger, again because the friction between bearing and the axle bed is sliding friction, sliding friction between not steady and bearing and the axle bed when bearing moves like this makes that the wearing and tearing of bearing are bigger, and the working life of bearing is shorter.

(3) summary of the invention

At having now at machinery assembling and transmission field, employing ball ball bearing is realized the installation between transmission shaft and the axle bed mostly, when rotating, the needs transmission shaft does reciprocating linear motion along axle bed, because the outer ring of ball ball bearing is that line contacts with axle bed, noise was bigger when bearing moved, the shortcoming that the wearing and tearing of bearing are big, working life is short, the invention provides a kind of linear bearing, the transmission shaft that is mounted thereon can do reciprocating linear motion along axle bed when rotating, the degree of wear of bearing is light, and the working life of bearing is longer.

Its technological scheme is such: it is characterized in that: it comprises square inner ring, described square inner ring is installed on the square groove of overcoat, the centre of described inner ring is a manhole, described through hole is vertical with the bottom land of described square groove, the interlayer between the bottom land of the interlayer of the described through hole left and right sides and described inner ring and described overcoat between described inner ring and the described overcoat is equipped with retainer, described retainer is equipped with roller, the cylndrical surface of described roller respectively with the internal surface of described overcoat, the outer surface contact of inner ring, the open end fit of shell and described overcoat square groove, the through hole position of corresponding described inner ring, the bottom surface of described shell is provided with the long strip through hole, and the width of described long strip through hole is greater than the diameter length of described inner ring cylindrical hole, less than the distance between described inner ring two parallel side.

The present invention adopts after the said structure, inner ring can pump along the roller of sidepiece, thereby transmission shaft can pump together with inner ring when guaranteeing the transmission shaft rotation, and shell is fixed, avoided the friction between bearing and the bearing support like this, and be rolling friction between inner ring and the roller, wearing and tearing between the two are lighter, the working life of bearing is longer, thereby avoided existing employing ball ball bearing to realize installation between transmission shaft and the axle bed, when rotating, the needs transmission shaft does reciprocating linear motion the serious wear of bearing along axle bed, the shortcoming that working life is short.

(4) description of drawings

Fig. 1 is a plan view of the present invention;

Fig. 2 is the sectional view of plan view of the present invention;

Fig. 3 is that the A-A of Fig. 1 is to sectional view.

(5) embodiment

See Fig. 1, Fig. 2, Fig. 3, the present invention includes square inner ring 2, square inner ring 2 is installed on the square groove of overcoat 5, the centre of inner ring 2 is manholes 3, through hole 3 is vertical with the bottom land of square groove, the interlayer between the bottom land of the interlayer of through hole 3 left and right sides and inner ring 2 and overcoat 5 between inner ring 2 and the overcoat 5 is separately installed with retainer 7,9 (see figure 3)s,

retainer

7,9 are separately installed with

roller

6,8,

roller

6,8 cylndrical surface respectively with the internal surface of overcoat 5, the outer surface contact of inner ring 2, the open end fit of the square groove of shell 1 and overcoat 5, through hole 3 positions of corresponding inner ring 2, the bottom surface of shell 1 is provided with long strip through hole 4, and the width of long strip through hole 4 is greater than the diameter length of inner ring 2 cylindrical holes 3, less than the distance between two parallel side of inner ring 2.

Claims

1, linear bearing, it is characterized in that: it comprises square inner ring, described square inner ring is installed on the square groove of overcoat, the centre of described inner ring is a manhole, described through hole is vertical with the bottom land of described square groove, the interlayer between the bottom land of the interlayer of the described through hole left and right sides and described inner ring and described overcoat between described inner ring and the described overcoat is equipped with retainer, described retainer is equipped with roller, the cylndrical surface of described roller respectively with the internal surface of described overcoat, the outer surface contact of inner ring, the open end fit of shell and described overcoat square groove, the through hole position of corresponding described inner ring, the bottom surface of described shell is provided with the long strip through hole, and the width of described long strip through hole is greater than the diameter length of described inner ring cylindrical hole, less than the distance between described inner ring two parallel side.