JPH076521U - Rolling bearing creep prevention device - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a creep preventing device for a rolling bearing in which an elastic ring is interposed between the rolling bearing and the housing in order to prevent creep caused between the rolling bearing and the housing. [Structure] An eccentric peripheral groove 1 is formed on an outer peripheral surface 1011 of an outer ring 101.
012 is formed, and the elastic rings 109 and 106 which are attached to the circumferential groove 1012 and the elastic rings 109 and 106 are molded or covered with a synthetic resin having elasticity, and the elastic rings 109 and 106 have bulging portions. 1093,1
063, and knurls 1065 and 1095 are formed on the surface of the outer ring 101 and the outer peripheral surface 1011 of the outer ring 101 and the housing 1.
Rolling bearing creep prevention device installed between 05.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a creep preventing device for a rolling bearing, which prevents creep between the outer ring of the rolling bearing and a housing by fitting an elastic member made of synthetic resin between them.

[0002]

[Prior art]

 It is known that an eccentric groove is formed on the outer peripheral surface of an outer ring of a rolling bearing, and a metallic elastic ring having a special shape is inserted into the eccentric groove. (Refer to the official report No. Sho 56-14220)

[0003]

[Problems to be solved by the device]

 However, since the metallic elastic ring uses a special steel material, a soft metal such as aluminum housing may cause abnormal wear on the inner peripheral surface of the aluminum housing due to external factors such as vibration.

Further, when the temperature rises, there is a problem that the gap between the two is increased due to the difference in linear expansion coefficient between the two, and the fixing force is reduced. In order to solve these problems, the material of the elastic ring that is interposed between the housing and the rolling bearing should not damage the mating member, and at the same time ensure that its shape is not destroyed by temperature, pressure, etc. That is the technical problem of the present invention.

[0005]

[Means for Solving the Problems]

 The structural requirements for solving the technical problem of the present invention are as follows. That is, an eccentric groove is formed on the outer peripheral surface of the rolling bearing, and the eccentric groove has a serrated surface having at least one bulge portion radially protruding from the maximum depth portion of the peripheral groove. A synthetic resin elastic ring or a metallic elastic ring covered with a synthetic resin is inserted, and the maximum depth of the circumferential groove is formed shallower than the cross section of the elastic ring. An object of the present invention is to provide a creep preventing device for a rolling bearing, which is wedge-shaped and fixed in a minimum space of a space formed between the inner peripheral surface of the housing and the housing.

[0006]

[Action]

 Since the elastic ring interposed between the rolling bearing and the housing has a special shape and is made of synthetic resin, it does not damage or wear the inner wall of the housing. Even if the temperature rises, the coefficient of linear expansion is large, so that the elastic ring is expected to expand in approximately the same degree in proportion to the expansion of the housing, and the surface of the elastic ring is provided with serrations. A fixed function, ie creep between the rolling bearing and the housing, is prevented.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a state in which an elastic ring is assembled between a circumferential groove of a rolling bearing and a housing. FIG. 2 is a plan view showing the relationship between the elastic ring assembled in FIG. 1 and the circumferential groove.

Reference numeral 10 represents the entire rolling bearing. A rolling element 103 is arranged between the inner and outer rings 102, 101, and the rolling elements 103 are arranged at predetermined intervals by a retainer 104.

Reference numeral 105 denotes a housing made of a light alloy such as aluminum. The outer peripheral surface 1011 of the outer ring 101 fitted and held in the housing 105 via an elastic ring 106 is eccentric to the outer peripheral surface 1011. A peripheral groove 1012 is formed, and the minimum depth of the peripheral groove 1012 is smaller than the thickness of the elastic ring 106.

The elastic ring 106 has a thickness greater than the minimum depth of the circumferential groove 1012, and its planar shape is, for example, as shown in FIG. 2, arc portions 1061 and 1062 having a radius r1 centered on a point P1. Further, a bulge portion 1063 is formed between the circular arc portions 1061 and 1062 with a smaller diameter than the radius r1 of the circular arc portions 1061 and 1062, and with a half radius r2 centered on the point P2. .

In the elastic ring 106 formed as described above, for example, as shown in FIG. 2, the bulging portion 1063 of the elastic ring 106 is positioned at the largest position of the circumferential groove 10 12, and the circumferential groove of the outer ring 101 is positioned. When the elastic ring 106 is attached elastically in contact with the inner peripheral surface 1051 of the housing 105, the bulging portion 1063 of the elastic ring 106 is elastically compressed and deformed, and the central portion of the bulging portion 1063 is elastically compressed. Presses against the inner peripheral surface 1051 of the housing 105.

In the embodiment described above, even when creep occurs in the outer ring 101 of the rolling bearing, the end edge 1064 on one side of the wide elastic ring 106 is eaten in a wedge shape having a small groove depth of the peripheral groove 1012. It is possible to prevent the included creep.

Reference numeral 107 in the drawings denotes a seal plate, and 108 denotes a shaft. FIG. 3 is a sectional view showing another embodiment of the present invention. FIG. 4 is a plan view showing the relationship between the elastic ring assembled in FIG. 3 and the circumferential groove.

The difference from the above embodiment is the material and shape of the elastic ring. That is, the elastic ring 109 made of metal such as a wire is covered with the synthetic resin 1091.

Therefore, the peripheral groove 1012 of the outer ring 101 may correspond to the width of the elastic ring 109, and the depth of the peripheral groove 1012, the bulging portion 1093, the edge 1094, etc. are substantially the same as those in the above-described embodiment. Therefore, the same reference numerals are given to the same parts, and the description of their operation will be omitted.

[0016]

[Effects of the Invention] In the present invention, the elastic ring is integrally molded with a synthetic resin material or the circumference of the wire is covered with a synthetic resin material so that the surface is serrated, so that the vibration ring is not affected by external influences such as vibration and temperature. Abnormal wear does not occur on the inner peripheral surface of the housing that is in contact with the housing and is made of a light alloy such as aluminum.

Further, even when the temperature rises, the expansion coefficient of the vibrating ring is larger than that of the light alloy, so that the fixing function of the elastic ring is not deteriorated and no creep occurs between them.

Therefore, it is possible to prevent the flitting corrosion on the raceway surface of the rolling bearing, and to obtain the operational effects peculiar to the present invention.

[0019]

[Submission date] August 6, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

In the embodiment described above, even when creep occurs in the outer ring 101 of the rolling bearing, the end edge 1064 on one side of the wide elastic ring 106 is eaten in a wedge shape having a small groove depth of the peripheral groove 1012. It is possible to prevent the included creep. In particular the outer circumference of the bulging portion 1063 of the elastic ring 106 can increase the creep effect by cross section as shown in FIG. 6 or FIG. 7 to form a jagged 10631 or uneven 10632.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state where an elastic ring is assembled between a circumferential groove of a rolling bearing and a housing.

FIG. 2 is a plan view showing the relationship between the elastic ring assembled in FIG. 1 and a circumferential groove.

FIG. 3 is a cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a plan view showing the relationship between the elastic ring assembled in FIG. 3 and a circumferential groove.

5 is an enlarged cross-sectional view in bracket A of FIG.

[Explanation of symbols]

 101: Outer ring 1011: Outer peripheral surface 1012: Circumferential groove 102: Inner ring 103: Rolling element 104: Retainer 105: Housing 1051: Inner peripheral surface 109, 106: Elastic ring 1061, 1062: Arc portion 1093, 1063: Swelling portion 1094 , 1064: edge 1095, 1065: serrated

[Procedure amendment]

[Submission date] August 6, 1993

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a sectional view showing a state where an elastic ring is assembled between a circumferential groove of a rolling bearing and a housing.

FIG. 2 is a plan view showing the relationship between the elastic ring assembled in FIG. 1 and a circumferential groove.

FIG. 3 is a cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a plan view showing the relationship between the elastic ring assembled in FIG. 3 and a circumferential groove.

5 is an enlarged cross-sectional view in bracket A of FIG.

6 is an expansion of the outer peripheral surface of the bulging portion of the elastic ring of FIG.
FIG.

FIG. 7 is an enlarged sectional view showing another embodiment of FIG.

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction content]

[Fig. 2]

[Procedure Amendment 5]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Added

[Correction content]

[Figure 6]

[Procedure correction 6]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Added

[Correction content]

[Figure 7]

Claims (1)

[Scope of utility model registration request] 1. A creep preventing device for a rolling bearing, wherein an eccentric groove is formed on an outer peripheral surface of an outer ring of the rolling bearing by an elastic member fitted between the housing and the rolling bearing, and at least one place is formed in the eccentric groove. A synthetic resin elastic ring having a bulge protruding in the radial direction from the maximum depth of the circumferential groove, or a metallic elastic ring covered with synthetic resin is inserted and inserted, and its surface has serrations. And the maximum depth of the peripheral groove is formed shallower than the cross section of the elastic ring, and further wedge-shaped into the minimum space of the space formed between the elastic ring and the inner peripheral surface of the housing. Rolling bearing creep prevention device characterized by being fixed by.