JP2003322157A - Rolling bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolling bearing capable of installing components easily and of certainly preventing damage to each raceway surface and rolling surface when it is transported. <P>SOLUTION: The rolling bearing 10 is structured so that a number of roller 13 as its rolling elements are installed between an inner ring 11 and an outer ring 12 and has a ring-shaped member 15 installed between the inner and outer rings 12. At least part of the ring-shaped member 15 is fitted by pressure resiliently in a gap surrounded by at least either of the inner 11 and outer rings 12 or adjoining rollers 13, 13. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a rolling bearing.

[0002]

2. Description of the Related Art As shown in FIG. 14, a rolling bearing 40 is a self-aligning type rolling bearing, and includes a large number of rollers arranged between an outer ring 12, an inner ring 11, and an outer ring 12 and an inner ring 11. Have 13 and. The rollers 13 are the outer ring raceway surface 43 of the outer ring 12 and the inner ring 11
It is arranged between the inner ring raceways 44 of the. Further, the rolling bearing 40 has a pair of flange portions 46, 46 provided on the inner ring 11 and a cage 25 for holding the rollers 13. As shown in FIG. 15, the cage 25 includes an annular portion 51 and a large number of pillar portions 53 extending from the annular portion 51, and the annular portion 51 and each pillar portion 53.
Each of the rollers 13 is housed in a pocket 54 surrounded by.

[0003]

Conventionally, when transporting this rolling bearing, as shown in FIG. 17, the arcuate portion formed by the outer ring 12, the roller 13 and the inner ring 11 of the rolling bearing 40 is continuously formed. By winding the tape 55 so as to surround it, the rolling bearing 40 was prevented from being scratched and rusted.

However, in this rolling bearing 40, as shown in FIG. 16, a radial internal clearance is provided between the inner ring 11 and the outer ring 12 to allow the rollers 13 to roll. In this state, the rolling bearing 40
When the bearings are transported, vibration and impact may be applied, and any or all of the inner ring raceway surface 44, the outer ring raceway surface 43, and the rolling surfaces of the rollers 13 may be damaged. If scratched, it will cause surface fatigue when the bearing is used, and the life of the rolling bearing 40 will be shortened.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a rolling bearing which can surely prevent each raceway surface and rolling surface from being scratched.

[0006]

In order to achieve the above-mentioned object, the present invention provides a rolling bearing in which a large number of rolling elements are arranged between an inner ring and an outer ring, as described in claim 1.
An annular member is arranged along the inner ring and the outer ring, and at least a part of the annular member is surrounded by at least one of the inner ring and the outer ring and between the rolling elements adjacent to each other. It is characterized in that it is elastically press-fitted into the formed void.

According to the present invention, the inner ring or the outer ring and the rolling element are constrained by at least one of the inner ring or the outer ring and a part of the annular member press-fitted into the space surrounded by the rolling elements adjacent to each other. Therefore, it is possible to prevent the inner ring raceway surface or the outer ring raceway surface and the rolling surface of the rolling element from being damaged during transportation, which can prevent the cause of surface fatigue when the bearing is used, so that the rolling bearing can be used longer. Further, since the ring member can be assembled only by pushing it into the gap between the inner ring or the outer ring and the rolling element, the assembling work and the removing work thereof are easy.

Further, according to the present invention, as described in claim 2, the annular member has a ring portion and a plurality of elastic portions connected to the ring portion, and each elastic portion is the ring member. It is characterized in that it is projected in a direction parallel to the axial direction of and is arranged at a predetermined equal interval along the circumferential direction of the ring portion. According to this invention, since each elastic portion projects from the annular member, it is easy to press the elastic member into the gap between the inner ring or the outer ring and the rolling element.

Further, in the present invention, as described in claim 3, since each of the elastic portions is hollow, elasticity can be increased and thereby a cushioning effect can be increased.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a rolling bearing according to the present invention will be described below in detail with reference to the drawings. Figure 1
1 is a view showing a rolling bearing of a first embodiment according to the present invention, FIG. 2 is a view showing a state where the annular member of the first embodiment according to the present invention is press-fitted between rollers, and FIG. The figure which shows the annular member of 1st Embodiment, FIG. 4: is a figure which shows the attachment method of the annular member of 1st Embodiment which concerns on this invention.

As shown in FIG. 1, in a rolling bearing 1 according to the first embodiment of the present invention, a large number of rollers 13, 13 ... Are arranged between an inner ring 11 and an outer ring 12. The rolling bearing 1 of this embodiment is a self-aligning type rolling bearing similar to the conventional one shown in FIG. This rolling bearing 1
Is an annular member arranged along the inner ring 11 and the outer ring 12.
Have 15. At least a part of the annular member 15 is elastic with respect to all the voids a, a ... Surrounded by at least one of the inner ring 11 and the outer ring 12 and between the rollers 13, 13. Have been press-fitted.

In this embodiment, a part of the annular member 15 is press-fitted into the spaces a, a ... Surrounded by the outer ring 12 and the rollers 13, 13 adjacent to each other. As shown in FIG. 2, the annular member 15 is press-fitted so as to be pushed between the rollers 13 and 13. As shown in FIG. 3, the annular member 15 is formed of an elastic material into an O-ring shape having a diameter larger than that of the outer ring 12 of the rolling bearing 1. Then, as shown in FIG. 4, an annular member 15 is arranged on the side of the rolling bearing 1, and a part of the annular member 15 is press-fitted between adjacent rollers 13 and 13 by a rod-shaped tool 16 such as a screwdriver. can do.

According to this rolling bearing 1, since a part of the annular member 15 can be assembled by simply pushing it into the gaps a, a ... Between the inner ring 11 or the outer ring 12 and the rollers 13, 13, which are rolling elements. , The assembling work becomes easy. When the rolling bearing 1 is attached to a machine or the like, the annular member 15 is removed, but the work is also easy. In addition, rolling bearing 1
Even if vibration or shock is applied during transportation, the inner ring 11, the outer ring 12 and the rollers 13 do not move relative to each other, so that the inner ring raceway surface, the outer ring raceway surface and the rolling surfaces of the rollers 13 are damaged. Can be prevented, the cause of surface fatigue during use of the bearing can be prevented, and the rolling bearing 1 can be used for a longer time.

FIG. 5 shows a rolling bearing of a second embodiment according to the present invention, FIG. 6 shows an annular member of a second embodiment according to the present invention, and FIG. 7 shows a second embodiment of the present invention. 8 is a view showing a method of attaching the annular member of FIG.
FIG. 6 is a sectional view taken along line BB of FIG.

As shown in FIG. 5, the rolling bearing 2 according to the second embodiment of the present invention is applied to a self-aligning type rolling bearing as shown in FIG. In this rolling bearing 2, the annular member 35 is press-fitted between the rollers 13 and 13, and
An annular member 35 is press-fitted between the outer ring 12 and the places 13, 13, ....

As shown in FIG. 6, the annular member 35 has a ring portion 36 having a diameter larger than that of the inner ring 11 and smaller than that of the outer ring 12 of the self-aligning type rolling bearing 2, and a plurality of ring portions 36 connected to the ring portion 36. And elastic portions 37, 37 ... Elastic part 37, 37 ・
.. are provided only on one side of the ring portion 36,
Projecting in a direction parallel to the central axis R of the. The elastic portions 37, 37 ... Are formed in a rectangular frame shape. As shown in FIG. 7, these elastic portions 37, 37 ... Are press-fitted so that their frame shapes are crushed between the adjacent rollers 13, 13.

As shown in FIG. 8, the ring member 36 of the annular member 35 is arranged on the side surfaces of the rollers 13, 13 ... Also, as shown in FIG. 9, the elastic portion 3 of the annular member 35 is
7 and 37 are press-fitted into the space a between the outer ring 12 and the adjacent rollers 13 and 13.

According to this rolling bearing 2, since the elastic portions 37, 37 ... Of the annular member 35 are formed in a frame shape, the elasticity and deformation amount of the elastic portions 37, 37. Even if the air gaps a, a ... Of the self-aligning type rolling bearing 2 are relatively large, these air gaps a, a.
・ It can be completely filled with, which prevents the inner ring raceway surface, the outer ring raceway surface and the rolling surfaces of the rollers 13, 13 ... from being scratched.

In the above embodiment, the ring portion 36
, And the elastic portions 37, 37 are integrally formed, the ring portion 36 can be separated at several places on the circumference, or the ring portion 36 can be omitted and only the elastic portion 37 can be formed.

FIG. 10 is a view showing a ring-shaped elastic member according to the present invention, FIG. 11 is a view showing a spherical elastic member according to the present invention,
FIG. 12 is a diagram showing a tubular elastic member according to the present invention,
13 is a view showing a balloon-shaped elastic member according to the present invention. In the above-described second embodiment, the case where the elastic portion 37 of the annular member 35 has a block shape or a frame shape has been described.
As shown in FIG. 13, a ring-shaped elastic portion 61, a spherical elastic portion
62, a tube-shaped hollow elastic portion 63, a balloon-shaped hollow elastic portion 64, or the like may be an elastic portion having an appropriate shape.

Since the hollow elastic portions 63 and 64 can increase the elasticity and the amount of deformation, the cushioning effect can be increased, and even when the gap a of the rolling bearing is relatively large, the hollow elastic portions 63 and 64 can be completely filled, and the material used. Since the cost can be reduced, the cost can be reduced.

In the above embodiment, the case where the present invention is applied to a self-aligning type rolling bearing has been described.
The present invention can be applied to rolling bearings and ball bearings other than the self-aligning type.

[0023]

As described above, according to the present invention, as described in claim 1, it is press-fitted into the space surrounded by at least one of the inner ring and the outer ring and between the rolling elements adjacent to each other. The inner ring or outer ring and the rolling element are constrained by a part of the annular member, which prevents the inner ring raceway surface or outer ring raceway surface and the rolling elements from being damaged, and prevents the cause of surface fatigue when the bearing is used. You can use rolling bearings longer. Further, since the annular member can be assembled only by pushing it into the gap between the inner ring or the outer ring and the rolling element, the assembling work and the removing work become easy.

According to the present invention, as described in claim 2, the annular member has a ring portion and a plurality of elastic portions connected to the ring portion, and each elastic portion is a ring member. It can project in a direction parallel to the axial direction and can be arranged at a predetermined equal interval along the circumferential direction of the ring part. In this case, since each elastic part projects from the annular member. It becomes easy to press the elastic member into the gap between the inner ring or outer ring and the rolling element.

Further, according to the present invention, as described in claim 3, when each elastic portion is hollow, the elasticity of each elastic portion can be increased, thereby increasing the cushioning effect, It is possible to surely prevent each raceway surface and each rolling surface from being scratched, prevent the original trial of surface fatigue when the bearing is used, and prolong the service life.

[Brief description of drawings]

FIG. 1 is a diagram showing a rolling bearing of a first embodiment according to the present invention.

FIG. 2 is a view showing a state in which an annular member is press-fitted between the rollers of the rolling bearing of the first embodiment according to the present invention.

FIG. 3 is a view showing an annular member of the first embodiment according to the present invention.

FIG. 4 is a diagram showing a method of mounting the annular member according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a rolling bearing of a second embodiment according to the present invention.

FIG. 6 is a diagram showing an annular member of a second embodiment according to the present invention.

FIG. 7 is a diagram showing a method for attaching an annular member according to a second embodiment of the present invention.

FIG. 8 is a view on arrow A of FIG.

9 is a sectional view taken along line BB of FIG.

FIG. 10 is a view showing a ring-shaped elastic member according to the present invention.

FIG. 11 is a view showing a spherical elastic member according to the present invention.

FIG. 12 is a view showing a tubular elastic member according to the present invention.

FIG. 13 is a view showing a balloon-shaped elastic member according to the present invention.

FIG. 14 is a diagram showing a general rolling bearing.

FIG. 15 is a partially enlarged view showing a general rolling bearing.

FIG. 16 is a view showing a general rolling bearing.

FIG. 17 is a diagram showing a packaging structure of a rolling bearing according to a conventional example.

[Explanation of symbols]

1,2 rolling bearing 11 inner ring 12 outer ring Around 13 15,35 annular member 26,36 Ring part 27, 37, 61-64 Elastic part a void Direction parallel to R axis direction

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fukuji Yoshikawa             1-5-50 Shinmei Kugenuma, Fujisawa City, Kanagawa Prefecture             Within NSK Ltd. F term (reference) 3J101 AA02 AA12 AA33 AA42 AA52                       AA62 BA13 DA20 FA46

Claims (3)

[Claims] 1. A rolling bearing having a large number of rolling elements arranged between an inner ring and an outer ring, and an annular member arranged along the inner ring and the outer ring, wherein at least a part of the annular member is A rolling bearing which is elastically press-fitted into a space surrounded by at least one of the inner ring and the outer ring and between the rolling elements adjacent to each other. 2. The annular member has a ring portion and a plurality of elastic portions connected to the ring portion, and each elastic portion projects in a direction parallel to an axial direction of the ring member. The rolling bearing according to claim 1, wherein the rolling bearing is arranged at a predetermined equal interval along the circumferential direction of the ring portion. 3. The rolling bearing according to claim 2, wherein each elastic portion is hollow.