JPH1122735A - Roller bearing holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with a subsequently fastening work without damaging a roller end surface by providing a protruding part on the circumferential side wall of a pocket for holding and guiding the roller, engaging it with a recessed part on the roller end surface, and opening out the protruding part to the roller inserting direction. SOLUTION: A protruding part 4 is directly provided on the circumferential side wall 3 of the pocket 2 of a roller bearing holder 1, and the side edge 11 of a roller 8 is brought into contact with the outward open surface 5 of the protruding part 4, and pressed from an arrowed direction A, whereby the side edge 11 is guided along the outward open surface 5, and advanced while sliding on the outward open surface 5 and pushing out the protruding parts 4. When it is further pushed, the protruding part 4 reaches a recessed part 10 on the roller 8 end surface to release the pressing action, and the protruding part 4 is engaged with the recessed part 10. Thus, the end surface of the roller 8 is never damaged in the insertion of the roller 8. Further, the roller can be easily and surely integrated at a low cost without requiring any subsequently fastening work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a roller bearing cage.

[0002]

2. Description of the Related Art Heretofore, there has been known a retainer of the type in which a convex portion is provided on a side wall in a circumferential direction of a pocket, and the convex portion is engaged with a concave portion provided on a roller end face to incorporate a roller.

[0003]

However, in this type of conventional retainer, there are problems such as difficulty in assembling the rollers at the time of assembling the rollers and scratching the roller end faces. In addition, Japanese Utility Model Publication No. 48-22256,
8-26093 or Japanese Utility Model Publication No. 45-27130 was also considered to solve the above problem, but the shape was complicated, the cost of the cage was increased, and caulking work was required after the rollers were assembled. It took some time.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to easily and surely prevent a roller end face from being damaged and requiring no caulking operation. It is an object of the present invention to provide a roller bearing retainer which can be incorporated and is inexpensive.

[0005]

In order to achieve the above object, the present invention provides a technical means in which a convex portion is provided directly on a circumferential side wall of a pocket for holding and guiding a roller, and the convex portion is provided with a roller. In the retainer which is engaged with and held by the concave portion formed on the end face, the convex portion is open outward in the roller insertion direction.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the roller bearing cage of the present invention will be described below with reference to the drawings. FIG. 1 shows the cage of the present invention in N
FIG. 2 is a plan view of a cage of this embodiment, FIG. 3 is a roller, and FIGS. 4 and 5 are enlarged views of a convex portion. . In the drawing, reference numeral 1 denotes a roller bearing retainer of the present invention, 8 denotes a roller, 12 denotes an outer ring, and 13 denotes an inner ring.

The drawings merely show one embodiment of the roller bearing retainer of the present invention, a bearing type to which the present invention cage is applied, and one embodiment of the roller, and are not intended to limit the present invention. Other configurations are possible within the scope of the invention. That is, the roller bearing retainer of the present invention can be applied to a general bearing type in which the inner ring and the outer ring can be separated, such as N type (both inner ring flange) and NJ type (both outer ring brim, inner ring piece brim). is there.

The cage 1 for roller bearings is provided with pockets 2... At predetermined intervals in the circumferential direction, and the projections 4, 4 are directly provided on the circumferential side walls 3, 3 of the pockets 2. , 4
The recesses 10, 10 provided in the end faces 9, 9 of the rollers 8 are engaged with each other to prevent the rollers 8 from falling off.

The protruding portions 4 and 4 protrude in a direction opposite to each other with an arbitrary width at a substantially central portion of the circumferential side walls 3 and 3 of the pocket 2 and a roller insertion direction (indicated by an arrow A in the drawing). Open surface 5 that is inclined to open outward shape
Having.

The open surface 5 of the projection 4 is formed by, for example, pressing the roller 8 in the insertion direction (indicated by an arrow A in the figure) as shown in FIG. In this case, the convex portion 4 has a shape as shown in FIG. 4, but is not limited to this, and is not limited thereto.

In the present embodiment, the angle of inclination of the open surface 5 is arbitrary, and the width, thickness, and the like of the convex portion 4 are also arbitrary, and are determined in relation to the concave portion 10 of the roller 8.

Further, when the projections 4 are formed by punching out the pockets, the projections 4 are pulled out in a direction opposite to the direction in which the rollers 8 are inserted (indicated by an arrow A in the figure), so that the outer opening in FIG. It is also possible to form the surfaces 6,7. This is based on the fact that in the blanking process, approximately half of the plate thickness is a cut portion, but the rest is a fracture surface facing outward.

The shape and size of the projections are not particularly limited as long as they are outwardly opened in the roller insertion direction, and are arbitrary. Further, the number of projections 4 provided in one pocket 2 is opposite to each other. The number is not limited to one, and a plurality may be provided, and there is no particular limitation. Also, the roller to be engaged and held is not particularly limited as long as it has a concave portion corresponding to the convex portion on the end face.

Here, the assembling and holding of the rollers 8 with the roller bearing retainer 1 shown in FIG. 1 will be described.

First, the side edges 11, 11 of the roller 8 are
4, when pressed in the direction of arrow A, the side edges 11, 11 of the roller 8 are projected.
The guide 4 is guided along the outer open surfaces 5, 5, and slides on the outer open surfaces 5, 5 so as to push between the two convex portions 4, 4 to advance.

When further pushed in, the two convex portions 4, 4 arrive at the respective concave portions 10, 10 of the roller end faces 9, 9, and the above-mentioned spreading action is released.
4 are engaged with the recesses 10 and 10, respectively.

In this way, since the rollers 8 are guided along the outer open surfaces 5 and 5 of the convex portions 4 and 4, the rollers 8 can be easily inserted. Is guided, so that the roller end face 9 is not damaged (scratch, etc.) at the time of insertion.

[0018]

According to the present invention, as described above, the convex portion is provided directly on the circumferential side wall of the cage pocket, and the convex portion is opened outward in the roller mounting direction. The rollers are guided, and the rollers push and spread between the two convex portions while sliding on the outer open surface, and when the two convex portions reach the respective concave portions of the roller end surfaces, the above-mentioned spreading action is released, and the two convex portions are released. The parts are respectively engaged with the recesses. Therefore, the rollers can be easily incorporated, and the end faces of the rollers are hardly scratched.

Therefore, unlike the related art, the end faces of the rollers are not damaged and the caulking operation is not required, so that the rollers can be easily and surely incorporated. Further, the cost is low.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view when an embodiment of a cage according to the present invention is used for a cylindrical roller bearing NU type.

FIG. 2 is a plan view showing a retainer according to an embodiment of the present invention with a part thereof omitted;

FIG. 3 is a longitudinal sectional plan view showing an embodiment of a roller combined with the retainer of the present invention.

FIG. 4 is an enlarged perspective view of a main part of the retainer of the present invention, showing one embodiment of a convex portion.

FIG. 5 is an enlarged perspective view of a main part of the retainer of the present invention showing another embodiment of the convex portion.

[Explanation of symbols]

 1: Cage 2: Pocket 3: Circumferential side wall 4: Convex portion 5, 6, 7: Open surface 8: Roller 9: End surface 10: Concave portion 12: Outer ring 13: Inner ring A: Roller insertion direction

Claims (1)

[Claims] 1. A cage in which a convex portion is provided directly on a circumferential side wall of a pocket for holding and guiding a roller, and the convex portion is engaged with a concave portion formed on an end face of the roller to hold the roller. A roller bearing retainer characterized by being open outward in the roller insertion direction.