JPH0680923U - Full complement roller bearing - Google Patents

Abstract

(57) [Summary] [Purpose] To make it easier to assemble the rollers by giving a margin to the amount of the last roller to be pushed into the outer ring, and to prevent the collar of the outer ring and the loss of the rollers. . [Structure] The inner width surface of the collar 2 of the outer ring 4 is provided with a recess 7 into which a corner portion 6 serving as a fulcrum of rotation of the roller 5 partially fits when the last roller 5 is pushed in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a full complement roller bearing, and more particularly to a full-roller type full complement roller bearing.

[0002]

[Prior art]

 In the full-tipped roller bearing of the staggered type shown in FIG. 4, radially inward flanges 2 are formed at both ends of the cylindrical portion 1, and axially inward roller retaining projections 3 are formed on the entire circumference at the tips of the flanges 2. The outer ring 4 is provided over the outer ring 4 and the rollers 5 incorporated therein.

Since the full-roller bearing described above incorporates the rollers 5 after the outer ring 4 is completed, the other rollers 5 except the last one roller 5 are obliquely inserted in the circumferential direction. However, since there is no room to insert the last roller 5 by inclining it diagonally, as shown by the alternate long and short dash line in Fig. 4, inclining the roller 5 in the radial direction and inserting one end into the outer ring 4, The corner portion 6 at one end is applied to the inner surface of one of the collars 2, and the other end is hooked on the other collar 2, and then a radial outward impact force is applied to the roller 5 so that the corner portion 6 serves as a fulcrum and the other. The collar 2 is elastically deformed at the end and pushed in, that is, a so-called pushing method is used.

[0004]

[Problems to be solved by the device]

 As described above, when the last roller is assembled by the staking method, if the squeezing amount is too large, the tip of the flange or the tip of the roller may be damaged. On the other hand, if the pushing amount is too small, there is a possibility that the rollers may drop during transportation or during press fitting into the housing even if there is no problem when assembling the rollers.

Therefore, it is necessary to set the biting amount to an appropriate value and sufficiently manage the set value. In this case, the tolerance of the inner width of the outer ring collar and the tolerance of the roller length must be taken into consideration.Therefore, a method of selecting and combining the inner width of the collar and the length, or expanding the inner width of the collar within elastic deformation Either of the mounting methods must be adopted, but in either case, there is a problem in that the number of man-hours required for rolling is large.

Therefore, it is an object of the present invention to provide a full complement roller bearing having a configuration in which there is a margin in the setting of the amount of the last roller to be engaged and the assembling thereof can be easily carried out.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is to form diametrically inward flanges at both ends of a cylindrical portion, and axially inward roller holding projections are provided at the tip of each flange over the entire circumference. It is composed of an outer ring and rollers incorporated therein, and is provided with a recess on the inner width surface of the flange of the outer ring, into which a corner portion that serves as a rotation fulcrum of the roller when fitted is provided. .

[0008]

[Action]

 In the full-roller bearing having the above-mentioned structure, when the rollers are installed in the outer ring, the remaining rollers are installed in the same manner as the conventional one. The roller to be finally installed is inclined in the radial direction, and the corner portion at one end is fitted into the recess provided in the inner width surface of the collar. Then, the other end does not come into contact with the holding protrusion, or if it comes into contact with the holding protrusion only slightly, the roller is lightly pushed in with the corner portion fitted in the recess serving as the fulcrum of rotation. At the same time as it is pushed in, the corners of the above rollers come out of the recesses, and like the other rollers, the retaining projections prevent them from falling off.

[0009]

【Example】

 Since the basic structure of the full complement roller bearing of the embodiment shown in FIG. 1 is the same as that of the conventional example shown in FIG. 4, the same parts are designated by the same reference numerals and the description thereof is omitted. It The difference from the conventional example is that a recess 7 is provided in the inner surface width of one of the collars 2, and a protrusion 8 serving as a mark for detecting the position of the recess 7 is provided on the outer surface corresponding to the recess 7. .

The recess 7 has a position and a shape in which the tip corner portion 6 of the roller 5 partially fits when the last roller 5 is inclined and inserted in the radial direction. Depending on the case, it is formed in a groove shape over the entire circumference.

The position of the recess 7 differs depending on the diameter of the roller 5 and the end surface shape 5 ', but generally, the center of the recess 7 is located on the inner diameter side or the outer diameter side of the roller center diameter L (see FIG. 2). Are located in most cases. For this reason, the end surface of the roller 5 that is set properly does not interfere with the recess 7.

The full-roller bearing of the embodiment is as described above. At the time of assembling, the roller 5 is incorporated into the outer ring 4 that has been manufactured in advance, and the last roller 5 is inclined in the radial direction, The corner portion 6 at one end is fitted into the recess 7 with the projection 8 as a mark, and the other end is fitted. Then, the roller 5 is slightly rotated from the state indicated by the alternate long and short dash line in FIG. In this case, the squeezing amount may be negative, zero, or positive, but the squeezing amount can be set with a margin as much as the roller 5 fits in the recess 7.

[0013]

[Effect of device]

 As described above, according to the present invention, by providing the concave portion on the inner width surface of the collar of the outer ring into which the corner portion, which is the rotation fulcrum of the roller when the roller is pushed, is fitted, the setting of the amount of the last roller to be pushed can be performed. Allows for extra space and makes it easier to install the rollers. As a result, it is possible to prevent the tip of the brim from breaking and the roller tip from breaking.

[Brief description of drawings]

FIG. 1 is a partially omitted sectional view of an embodiment.

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a partially omitted cross-sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylindrical part 2 Tsuba 3 Protrusion for holding 4 Outer ring 5 Roller 5'Roller end face shape 6 Corner part 7 Recess 8 Protrusion

Claims (1)

[Scope of utility model registration request] 1. An outer ring formed by forming diametrically inward flanges at both ends of a cylindrical portion, and providing axially inwardly directed roller holding projections around the entire circumference at the tip of each flange, and an outer ring incorporated therein. A full complement roller bearing comprising a roller and a recess on the inner width surface of the flange of the outer ring into which a corner portion serving as a fulcrum of rotation of the roller when fitted is provided.