JPS62228711A - Manufacture of bearing device - Google Patents

Abstract

PURPOSE:To increase contact area between spherical bodies and an annular plate body by forming semiconductor concave parts on both inner and outer circumferential edges of the annular plate body. CONSTITUTION:An annular plate body 3A of a constant width is provided in its circumferential direction at constant intervals with circular multiple spherical body retaining holes 6. Semiconductor concave parts 9 are formed in positions radially corresponding to the spherical body retaining holes 6 on both inner and outer circumferential edges of the annular plate body 3A. Then, a spherical body 4 is placed on one side of the spherical body retaining hole 6 and part of the spherical body 4 is made to protrude out of the spherical body retaining hole 6 on the other side of the annular plate body 3A, and inner and outer circumferential parts of the annular plate body 3A where the concave parts 9 are formed are respectively bent in an approximate L-shape toward the spherical body 4 so that semicircular are edges 9a contact the spherical body 4. In this manner, contact area sufficient for preventing the spherical body from coming off even if there is springback of the annular plate body can be secured.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a method for manufacturing a bearing device.

[Conventional technology]

For example, as shown in FIG. 6, in a cylinder device 2 that transmits braking force to a friction pad 1 of a disc brake, a large number of spheres 4 are mounted on an annular plate 3 of a constant width in which a large number of sphere holding holes are equally spaced. A holding device 5 is employed (a similar structure is shown in Japanese Utility Model Application No. 59-75943).

By the way, as shown in FIGS. 7 and 8, the bearing device 5 has a plurality of circular spherical holding holes 6 disposed intermittently at equal intervals in the circumferential direction of the annular plate 3 having a constant width. A sphere 4 is arranged on one side of each sphere holding hole 6, and a part of the sphere 4 is made to protrude to the other side of the annular plate 3 through the sphere holding hole 6, and in this state. At least the inner circumferential side and the outer circumferential side of the ring plate body 3 corresponding to the above-mentioned sphere 4 are bent in a substantially dogleg shape in the direction of the above-mentioned sphere 4, so that the opposite side of the part of the sphere 4 that protrudes from the above-mentioned sphere holding hole 6 is aligned. the substantially doglegged deformed portion 3a so that the portion is exposed;
It is formed by locking at the edge of 3b.

[Problem that the invention seeks to solve]

However, with the spheres 4 equally distributed, the inner circumferential side and the outer circumferential side of the annular plate 3 are bent into a substantially doglegged shape as shown in FIG. The sphere 4 is held down so as to stop being handled, but the bending deformation is stopped when the inner and outer edges of the annular plate 3, which has been bent into a substantially doglegged shape, come into contact with the sphere. Must.

Therefore, due to the springback after the bending deformation force is removed, the inner circumferential side and the outer circumferential side of the annular plate body 3 escape in a direction in which their edges are separated from the sphere 4, so that the deformed portion 3a
, 3b not only makes it easier to handle the sphere 4, but the smaller the diameter of the sphere 4, the more difficult it is to bend the inner and outer circumferential sides of the spherical plate 3. Moreover, when viewed as a bearing device 5, a part of the sphere 4 and the deformed parts 3a, 3
Since a part of the edge of b is in a point contact state, the contact area of this part is small, and the holding force of the sphere 4 is also weak, and the sphere 4
is easy to handle.

On the other hand, as shown in FIG. 9, two symmetrical spherical plates 7, 8
It rotatably holds a large number of spheres 4 from both sides, and a portion of each sphere 4 protrudes from the holding portion, and among the two spherical plates 7.8.

Some bearing devices are constructed by overlapping and joining their outer peripheral edges, but in this case, the manufacturing cost increases because the two plates 7 and 8 are overlapped and joined.

[Means for solving problems]

The present invention can solve the above problem by forming four semicircular parts on the bent edges of the inner and outer sides of the annular plate facing the sphere, thereby increasing the contact area with the sphere at the deformed part. This is how it was done.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 3, first, a large number of circular sphere holding holes 6 are formed in an annular plate body 3A having a constant width by arranging them intermittently at equal intervals in the circumferential direction of the annular plate body 3A. The above-mentioned sphere holding hole 6 between the inner peripheral edge and the outer peripheral edge of the plate body 3A
A semicircular recess 9 is formed in a portion corresponding to the radial direction, and then the sphere 4 is placed on one side of the sphere holding hole 6, and a part of the sphere 4 is inserted through the sphere holding hole 6 into the annular plate. The body 3A is made to protrude to the other side, and in this state, at least the inner circumferential side and outer circumferential side of the annular plate body 3A where the concave portion 9 is provided are bent in the direction of the sphere 4 in a substantially doglegged shape, and the concave portions 9, 9 are bent. The bending deformation is stopped when the semicircular arc edges 9a, 9a come into contact with the sphere 4, and the part 4a of the sphere facing the protruding part from the sphere holding hole 6 in the sphere 4 is exposed. semicircular arc edge 9
a, coated with 9a.

According to the above embodiment, the spherical plate 3 is arranged so that a part of the sphere 4 is approximately tangential to the semicircular arc edges 9a, 9a of the recess 9°9.
Since the inner and outer circumferential sides of A are bent, the contact area between the sphere 4 and the inner and outer circumferential sides of the annular plate increases.

4 and 5 show the other side of the present invention, in which the periphery between the recesses 9, 9 adjacent to each other on the inner circumferential side and the outer circumferential side of the spherical plate body 3B is applied in the radial direction (on the outer circumferential side, the outward In addition, a semicircular convex portion 10 is provided protrudingly on the inner circumferential side (inside), and this convex portion 10
A bearing device 5 was manufactured using the annular plate 3B and the sphere 4, which were equipped with the following, in the same manner as in the above embodiment, and the contact area between the sphere 4 and the inner and outer circumferential sides of the annular plate was further increased: (I)
It is.

〔Effect of the invention〕

As explained above, according to the present invention, since the semicircular arc edge of the recess can substantially contact a part of the sphere, even if there is springback during bending deformation between the inner circumference side and the outer circumference side of the annular plate, the sphere remains intact. This has the effect of ensuring a sufficient contact area to prevent the sphere from coming off, and fully exhibiting the ability to hold the sphere.

[Brief explanation of drawings]

Fig. 1 is a developed view of an annular plate body of the present invention, Fig. 2 is a plan view of a bearing device manufactured by one of the manufacturing methods of the present invention without showing the main parts, and Fig. 3 is a - Possible line cross-sectional diagram No. 4
The figure is a developed plan view of another ring plate of the present invention, Figure 5 is a plan view showing the main parts of a bearing device using the ring plate of Figure 4, and Figure 6 is a plan view of a bearing device using a conventional bearing device. A cross-sectional view of a disc brake, FIG. 7 is an exploded plan view of a part of the annular plate of a conventional bearing device, FIG. 8 is a cross-sectional view of the conventional bearing device, and FIG. 9 is a cross-sectional view of another conventional bearing device. FIG. 3... Annular plate, 4... Sphere, 5...
... Bearing device, 6 ... Ball holding hole,
9... Concavity. Agent Patent attorney Jun Miyazono - Engraving of the drawings (no changes to the contents) Fig. 3 38 'j Fig. 1 Fig. 2 Person 4, agent 〒120 (1)) Drawings, 31 swords υJ hired ℃ and 9 Itosho Jro.

Claims (1)

[Claims] (1) Sphere holding holes are evenly distributed in an annular plate of a constant width, a sphere is placed on one side of the sphere holding hole, and a part of the sphere protrudes from the sphere holding hole to the other side of the annular plate. In this state, at least the inner circumferential side and the outer circumferential side of the annular plate corresponding to the sphere are bent in the direction of the sphere to expose a part of the sphere facing the part protruding from the sphere holding hole. In the manufacturing method of the bearing device, the bearing device is covered with the inner circumferential side and the outer circumferential side so that the inner circumferential side and the outer circumferential side part are covered with a semicircular recess on the inner circumferential side and the outer circumferential bent end edge of the annular plate facing the sphere. A method of manufacturing a bearing device, characterized in that a bearing device is formed.