JP2003028170A - Double row rolling bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double row rolling bearing using an interlink capable of being inexpensively and easily molded. SOLUTION: An inner ring 1 of this double row rolling bearing is a pair of mating rings 2, 3, the mating rings 2, 3 are integrated by means of the interlink 9 fitted on their inner peripheries. The interlink 9 is composed a long plate-shaped main body 9a and a plurality of projecting pieces 10, 11 radially bent from both side faces, and the projecting pieces 10, 11 are fitted into circumferential grooves 7, 8 formed on an inner periphery of each of the mating rings 2, 3 to connect and integrate both mating rings 2, 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-row rolling bearing, for example, a double-row rolling bearing for an automobile, and more particularly to a connecting structure for the inner and outer rings formed of a pair of mating wheels.

[0002]

2. Description of the Related Art In a conventional double row rolling bearing, the inner ring has a pair of mating rings integrated with each other to facilitate the handling of the bearing during assembly and maintenance. Specifically, as shown in FIG. 4, the inner ring 40 is composed of a pair of mating wheels 41 and 42, and tracks 41a and 42a are formed on the outer peripheral surfaces of the mating wheels 41 and 42, respectively. Two rows of tracks 43a, 43b facing 41a, 42a are formed on the inner peripheral surface of the integral outer ring 43,
Raceway 41a of one of the mating wheels 41 and raceway 43a of the outer ring 43
The rolling elements 44 held by the cage 45 are respectively interposed between the raceway 42a of the other mating wheel 42 and the raceway 43b of the outer ring 43.

Further, the both mating wheels 41, 42 are integrated at a connecting ring 46 by abutting one end faces 41b, 42b thereof. The connecting ring 46 is formed of an elastic metal having a cut-off portion at one position in the circumferential direction, and has rims 46b, 46c extending outward in the radial direction on both sides of the connecting ring body 46a and circumferentially continuous. . Then, the connecting ring 46 is reduced in diameter and is forcibly fitted and inserted into the inner peripheral surfaces of the abutting portions of the two mating wheels 41, 42.
By fitting the collars 46b and 46c of the coupling ring 46 into the respective circumferential grooves 47 and 48 formed on the inner peripheral surface of 42, the fitting wheels 41 and 42 are coupled and integrated.

[0004]

In the conventional double row rolling bearing of FIG. 4, the connecting ring 46 is made of, for example, a metal plate of SK5, and is formed into an annular connecting ring main body 46a and both flanges 46b.
46c is simultaneously formed by forming. Therefore, the forming of the brims 46b and 46c is very troublesome,
Moreover, since complicated equipment is required, it becomes expensive. Furthermore, since it is difficult to form the brims 46b and 46c,
Care must be taken to maintain the accuracy of the height of both flanges, and if this accuracy is poor, there is a problem that it cannot be installed in the bearing.

In order to solve the above problems, it is an object of the present invention to provide a double row rolling bearing which uses an inexpensive and easily formed connecting ring.

[0006]

As a means for solving the above-mentioned problems, in the invention of claim 1, the inner ring is a pair of mating wheels, and the end faces of both mating wheels are butted against each other, In a double-row rolling bearing in which the wheels are integrated by a connecting ring mounted on the inner peripheral surface of the body, the connecting ring is formed by bending the long plate-shaped main body and both side surfaces of the main body in the radial direction and the same direction. It is composed of a plurality of projecting pieces that are bent and formed at predetermined intervals in the longitudinal direction of the main body, and the connecting ring is rounded into a circular shape so that the projecting pieces are located radially outward. Both the mating wheels are integrated by being fitted into the inner peripheral surface of the abutting portion of the mating wheels and by fitting the projecting pieces into the circumferential grooves formed in the inner peripheral surfaces of both the mating wheels. Is characterized by.

Further, in the invention of claim 2, the double row rolling bearing according to claim 1, wherein each of the projecting pieces is formed with a through hole.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The contents of a double row conical rolling bearing according to the present invention will be described with reference to FIGS. The inner ring 1 is composed of a pair of mating wheels 2 and 3, and conical orbits 2a and 3a for rolling elements are formed on the outer peripheral surfaces of both mating wheels 2 and 3, respectively, and the end surfaces 2b and 3b abut against each other. Has been done. Further, the outer ring 4 is an integral type, and two rows of conical tracks 4a and 4b for rolling elements are formed on the inner peripheral surface of the outer ring 4 so as to face the respective tracks 2a and 3a of the two mating wheels 2 and 3. further,
One raceway 4a of the outer ring 4 and one raceway 2 of the mating wheel 2
Tapered rollers 5 as rolling elements held by cages 6 are respectively interposed between a and between the other raceway 4b of the outer ring 4 and the other raceway 3a of the mating ring 3.

In the vicinity of the inner peripheral surface of the abutting portion of the two abutment wheels 2 and 3, that is, the abutting end surfaces 2b and 3b,
Peripheral grooves 7 and 8 are formed, respectively. Then, a connecting ring 9 to be described later is fitted into the inner peripheral surfaces of the two mating wheels 2 and 3 so as to be connected and integrated.

The connecting ring 9 is formed of, for example, a metal plate material of SK5, and has a long plate-shaped main body 9a, which is bent from both side surfaces of the main body 9a in the radial direction and in the same direction, and in the longitudinal direction of the main body 9a. It is composed of a plurality of protrusions 10 and 11 formed at a predetermined interval. As a method of forming the connecting ring 9, first, projecting pieces 10 and 11 extending on the same plane as the body 9a on both side surfaces are punched together with the body 9a as a blank, and then the projecting pieces 10 and 11 are formed on the body 9a.
Is formed by bending in the same radial direction so as to be orthogonal to the plane. That is, the state shown in FIG. 2 is obtained. In addition, the projecting pieces 10, 1
Through holes 10 a and 11 a are formed in the first part 1. Then, the connecting ring 9 is cut into a predetermined length, and a hook is hooked in any one of the through holes 10a and 11a of the protruding pieces 10 and 11 at the cut end to be rolled as shown in FIG. By force-fitting it into the inner peripheral surface of both mating wheels 2 and 3,
By fitting 11 into the circumferential grooves 7 and 8 of both mating wheels 2 and 3, respectively, both mating wheels 2 and 3 are connected and integrated.

Although the double row tapered roller bearing has been described in the above embodiment, the present invention can be applied to other bearing types such as a double row angular contact ball bearing and a double row cylindrical roller bearing.

The present invention has the above-mentioned constitutions 10 and 11, and since the connecting ring 9 is formed only by simple press punching and bending of the projecting piece, it is easy to mold and is inexpensive. In addition, the protrusion 10,
Since the accuracy of 11 can be easily maintained, it can be surely incorporated into the bearing. Further, products having different bearing inner diameters can be easily dealt with by simply adjusting the cutting length of the connecting ring 9.

[0013]

According to the first aspect of the present invention, the connecting ring is formed by simply forming the projections extending on the same plane as the main body on both side surfaces together with the main body, and then bending each projection in the radial direction. Therefore, the cost is low, and it is easy to assemble by simply rolling the connecting ring and incorporating it into the bearing.

Further, according to the second aspect of the present invention, since each projecting piece is formed with a through hole, the through hole serves as a hook catching portion for rolling the connecting ring, and the connecting ring is easily rounded and incorporated into the bearing. be able to.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a double row rolling bearing according to an embodiment of the present invention.

FIG. 2 is a molding state diagram of the connecting ring of the present invention.

FIG. 3 is a state diagram in which the connecting ring of the present invention is rolled.

FIG. 4 is a sectional view of a conventional double row rolling bearing.

[Explanation of symbols]

1 inner ring 2 mating wheels 3 mating wheels 4 outer ring 5 cones 6 cage 7 circumferential groove 8 circumferential grooves 9 connecting rings 9a body 10 protrusions 10a through hole 11 protrusions 11a through hole

Claims (2)

[Claims] 1. The inner ring is a pair of mating wheels, and
In a double-row rolling bearing in which the end faces of both mating wheels are abutted against each other and the two mating wheels are integrated by a connecting ring mounted on the inner peripheral surface thereof, the connecting ring is a long plate-shaped body. A plurality of projecting pieces that are bent from both side surfaces of the main body in the radial direction and the same direction and are formed at predetermined intervals in the longitudinal direction of the main body. It is rounded into a circular shape so that it is located in one direction, and is fitted and inserted into the inner peripheral surface of the abutting portion of the above two mating wheels,
A double row rolling bearing, characterized in that the projecting pieces are fitted into the circumferential grooves formed on the inner peripheral surfaces of the two mating wheels to thereby integrate the two mating wheels. 2. The double row rolling bearing according to claim 1, wherein each of the projecting pieces has a through hole formed therein.