JPH0937869A - Stud type roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily assemblable stud type roller with the small number of parts at a low cost. SOLUTION: A sleeve 6 is fitted to a stud 3 inserted to the inner side of a roller 1 and abutted to a flange 4 at the tip of the stud. A ball rotating surface 8 forming a track groove 7 with the flange 4 is provided on the outer periphery of the tip part of the sleeve 6. Many balls 9 are assembled between the track groove 7 and the track groove 2 on the inner diameter surface of the roller 1, resistance is given to the movement in an axial direction of the sleeve 6 by a roughened surface 10 formed on the outer surface of the stud 3 and this stud type roller is held in an assembled state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stud type roller for slidably supporting a drawer of a cabinet or the like.

[0002]

2. Description of the Related Art As a stud type roller of this type, FIG.
Are known from the prior art. This stud type roller has a raceway groove 21 formed on the inner diameter surface of the roller 20.
And a stud 25 inserted inside the inner ring 22 by incorporating a ball 24 between the raceway groove 23 provided on the outer diameter surface of the inner ring 22 and the inner ring 22.
The inner ring 22 is prevented from coming off by a shoulder portion 26 on the outer periphery of the and a caulking at the tip of the stud.

In the above-mentioned stud type roller, in order to increase the load capacity and withstand a high load, the retainer of the ball 24 is usually omitted and a large number of balls 24 are provided between the pair of raceway grooves 21, 23. It is a built-in type.

[0004]

By the way, in the conventional stud type roller of the total ball type, if the inner ring 22 is single, the balls 24 cannot be incorporated.
The inner ring 22 is divided in the axial direction, a large number of balls 24 are assembled between the ball rolling surface of one of the divided inner rings 22a and the raceway groove 21 of the roller 20, and then the remaining divided inner ring 22b is fitted to the stud 25. The inner ring 22 by crimping the tip of the stud.
Is pressed against the shoulder portion 26, which has a large number of parts, requires much labor for assembly, and is extremely disadvantageous in terms of cost.

An object of the present invention is to provide a stud type roller which has a small number of parts and is low in cost.

[0006]

In order to solve the above problems, according to the present invention, a stud having a flange at the tip is inserted into the inside of the roller, a sleeve is fitted to the stud, and the tip of the sleeve is inserted. A ball rolling surface that forms a raceway groove with the flange is formed on the outer periphery of the portion, and a large number of balls are incorporated between the raceway groove and the raceway groove provided on the inner diameter surface of the roller, and the sleeve is provided on the outer periphery of the stud. It has a rough surface that comes into contact with the inner diameter surface of the sleeve and gives resistance to axial movement of the sleeve.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the roller 1 has a raceway groove 2 on its inner diameter surface. A flange 4 is provided at the tip of the stud 3 inserted inside the roller 1, and a hole 5 for caulking is formed at the rear end surface.

A ball rolling surface 8 which forms a raceway groove 7 with the flange 4 is provided on the outer periphery of the tip portion of the sleeve 6 fitted to the outside of the stud 3, and the raceway of the raceway groove 7 and the roller 1 is provided. A large number of balls 9 are incorporated between the grooves 2.

The outer diameter of the tip of the sleeve 6 is set to be equal to or smaller than the inscribed circle diameter of the ball 9 so that it can be inserted into the inner side of the balls 9 arranged in an annular shape.

On the outer diameter surface of the stud 3, a rough surface 1 is provided at a position facing the inner diameter surface of the sleeve 6 which is in contact with the flange 4.
0 is formed. The rough surface 10 resists the axial movement of the sleeve 6 and prevents the sleeve 6 from moving axially during the pre-assembly transport stage of the stud roller.

In the assembly of the stud type roller having the above-mentioned structure, the required number of the raceway grooves 2 of the roller 1 with the sleeve 6 moved to the rear end of the stud 3 or with the sleeve 6 pulled out from the stud 3. The ball 9 is assembled, the sleeve 6 is slid along the outer diameter surface of the stud 3, and the tip of the sleeve 6 is inserted inside the balls 9 arranged in an annular shape.

When assembling the stud type roller, the rear end portion of the stud 3 is inserted into the hole 12 formed in the roller support member 11, and the stud 3 is fixed by the caulking of the rear end surface of the stud. And flange 4
And prevent the sleeve 6 from moving in the axial direction.

FIG. 2 shows another embodiment of the present invention. In this embodiment, instead of fixing the stud 3 by caulking shown in FIG. 1, a screw 13 is provided at the rear end of the stud 3.
And a torque engaging portion 14 capable of engaging with the tip of a turning tool such as a screwdriver is formed on the end surface of the flange 4, and screwed into the screw hole of the screw 13 or tightening of a nut screw-engaged with the screw 13. The stud 3 is attached to the roller support member 11 by means of.

Since the other structure is the same as that of FIG. 1 described above, the same parts are designated by the same reference numerals and the description thereof will be omitted.

[0016]

As described above, according to the present invention, the roller, the stud, the sleeve, and the ball have a small number of parts, so that the assembly is easy and the cost can be reduced.

Further, by providing a rough surface on the outer periphery of the stud which gives resistance to axial movement of the sleeve by contact with the inner diameter surface of the sleeve, the sleeve moves axially before the stud roller is assembled. As a result, it is possible to prevent the balls from coming off from the studs and from falling out from the raceway grooves.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a stud-shaped roller according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of the same stud type roller.

FIG. 3 is a sectional view showing a conventional stud type roller.

[Explanation of symbols] 1 roller 2 raceway groove 3 stud 4 flange 6 sleeve 7 raceway groove 8 ball rolling surface 9 ball 10 rough surface

Claims (1)

[Claims] 1. A stud having a flange at its tip is inserted inside a roller, and a sleeve is fitted to the stud.
A ball rolling surface that forms a raceway groove with the flange is formed on the outer periphery of the tip of the sleeve, and a large number of balls are incorporated between the raceway groove and the raceway groove provided on the inner diameter surface of the roller to form the stud. A stud-shaped roller provided with a rough surface on the outer periphery of the sleeve that contacts the inner diameter surface of the sleeve and provides resistance to axial movement of the sleeve.