JPH0687724U - Shell type bearing - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a shell type bearing capable of reducing the manufacturing cost of the outer ring and improving the formability. [Structure] An axial separation section 6 is formed in a cage 3 incorporated inside an outer ring 1. The cage 3 is reduced in diameter, and the outer ring 1
The retainer 3 is incorporated into the outer ring 1 from the inside of the flange 2 formed at the end of the retainer 3. Thereby, the pair of flanges 2 can be formed at the same time when the outer ring 1 is formed by press forming a steel plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a shell type bearing having an outer ring made of a steel plate.

[0002]

[Prior art]

 The shell type bearing comprises an outer ring made of steel plate having inward flanges at both ends, a cage incorporated inside the outer ring, and a rolling element housed in a pocket of the cage.

In the shell type bearing described above, since the retainer is prevented from coming off by the flange provided on the outer ring, if the pair of flanges are formed during press molding of the outer ring, the retainer cannot be incorporated.

Therefore, conventionally, as shown in FIG. 4 (a), a steel plate is press-molded to form an outer ring 10 having a flange 11a at one end, and a rolling element 12 is held inside the outer ring 10. After incorporating the container 13, the other end of the outer ring 10 is bent inward to form a flange 11b as shown in FIG. 4B.

[0005]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional shell type bearing, since it is necessary to fold the other end of the outer ring 10 inward after the cage 13 is assembled in the outer ring 10, the outer ring 10 is heat-treated to increase its hardness. However, it is necessary to anneal the bent portion 14 at the other end, which causes a problem of increasing the manufacturing cost of the outer ring. Further, since bending is performed after annealing, cracking of the bent portion 14 and moldability become problems.

The present invention aims to solve the above-mentioned conventional problems and to reduce the manufacturing cost by eliminating the step of annealing the outer ring and to improve the formability.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, an outer ring made of steel plate having inward flanges at both ends, a cage incorporated inside the outer ring, and a rolling wheel accommodated in a pocket of the cage. In a shell type bearing composed of a moving body, the cage is provided with an axially separated portion.

[0008]

[Action]

 As described above, since the cage can be reduced in diameter by providing the cage with the axially separated portion, the cage can be incorporated into the outer ring from the inside of the flange formed on the outer ring. Therefore, the pair of flanges can be formed at the time of press-molding the outer ring, and the annealing after the heat treatment of the outer ring can be eliminated.

[0009]

【Example】

 An embodiment of this invention will be described below with reference to FIGS.

As shown in FIG. 1, the outer ring 1 is a press-formed product of a steel plate. The outer ring 1 has a pair of flanges 2 at both ends, and a retainer 3 is incorporated therein.

A plurality of pockets 4 are formed in the cage 3 at equal intervals in the circumferential direction, and rolling elements 5 are housed in each pocket 4.

The cage 3 is made of an elastic material such as nylon. As shown in FIGS. 2 and 3, the retainer 3 is provided with an axial separating portion 6.

Here, in FIG. 2, the retainer 3 is divided into two in the circumferential direction with two separating portions 6. In addition, in FIG. 3, one cut-off portion 6 is provided, a cut-out portion 7 is formed at one end of the cut-off portion 6, and a projecting portion 8 is provided at the other end. The cage 3 is held in a circular shape.

In the cage 3 shown in FIG. 2, both circumferential ends of the divided cage halves 3a and 3b are pressed inward to be deformed, and in the deformed state, the inside of the flange 2 of the outer ring 1 is deformed. To the inside of the outer ring 1.

Further, in the cage 3 shown in FIG. 3, the opposite ends of the separating portion 6 are displaced in the radial direction of the cage 3 to be reduced in diameter, and as shown in FIG. With both ends superposed on each other, the outer ring 1 is inserted into the outer ring 1 from the inside of the flange 2.

As described above, since the cage 3 can be assembled inside the outer ring 1 from the inside of the flange 2, the outer ring 1 forms a pair of flanges 2 during press forming of a raw steel plate, and After that, a manufacturing method for increasing the hardness by heat treatment can be adopted.

[0017]

[Effect of device]

 As described above, in the shell type bearing according to the present invention, the retainer can be reduced in diameter by forming the separation portion in the retainer, and in the reduced diameter state, the retainer is assembled from the inside of the flange to the inside of the outer ring. be able to. For this reason, a pair of flanges can be formed at the time of forming the outer ring for press-forming the raw steel sheet, and problems such as cracking can be suppressed, the formability can be improved, and the annealing after heat treatment can be achieved. Further, it is possible to eliminate the steps, and it is possible to reduce the manufacturing cost.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a shell type bearing according to the present invention.

FIG. 2 is an exploded perspective view of the above.

FIG. 3A is a perspective view showing another example of the same retainer;
(B) is a perspective view showing the reduced diameter state of the cage.

FIG. 4 (a) is a sectional view showing a state in the middle of assembling a conventional shell type bearing, and (b) is a sectional view showing the assembled state.

[Explanation of symbols]

 1 Outer ring 2 Flange 3 Cage 4 Pocket 5 Rolling element 6 Separation part

Claims (1)

[Scope of utility model registration request] 1. A shell type bearing comprising an outer ring made of steel plate having inward flanges at both ends, a retainer incorporated inside the outer ring, and a rolling element housed in a pocket of the retainer. A shell type bearing, wherein the cage is provided with an axially separated portion.