TW201908616A - Bearing and apparatus having the same capable of determining the position of a holder relative to an outer ring and an inner ring to a proper position - Google Patents

Abstract

The aim of this invention is to solve a problem of being difficult to determine the position of a holder relative to an inner ring and an outer ring while being assembled. This invention provides a bearing, which includes: an outer ring; an inner ring, arrange in a concentric circular status with the outer ring; a plurality of rollers, arranged between the outer ring and the inner ring; and a holder, used for holding the plural rollers. The holder has a guiding part; the guiding part is abutted against one of the inner ring and the outer ring while being assembled, so that the position of the holder relative to said ring can be determined.

Description

Bearing and device with bearing

The present invention relates to a bearing and a device having the same.

Bearings having a plurality of rolling elements held by a retainer between the inner race (inner ring) and the outer race (outer ring) are known in the industry. For example, Patent Document 1 describes a specific configuration of such a bearing.

In Patent Document 1, a flange that contacts the end surface of the tapered roller and guides the rotation of the tapered roller is formed in the inner race. A recess (engagement portion) is formed in the flange. On the other hand, at one end of the retainer, a projection which is curved toward the inner side in the radial direction of the bearing and which is tapered is formed.

In Patent Document 1, a retainer that holds a tapered roller as a rolling element is attached to an inner race, and secondly, an outer race is assembled such that a tapered roller and a retainer are interposed between the inner race and the inner race. When the retainer is assembled to the inner race, the projection of the retainer is hooked on the recess of the inner race. Thereby, the separation of the retainer from the inner race before assembling the outer race is prevented. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Unexamined Publication No. SHO 58-165324

[The problem that the invention wants to solve]

In the bearing described in Patent Document 1, in the operation (when the inner race and the outer race rotate relative to each other), the protruding portion of the retainer does not come into contact with the concave portion of the inner race, and is worn in the recessed portion. A gap is provided between the portion and the recess. The retainer is attached to the inner race only by hooking the projection to the recess of the inner race without assembling the outer race. Thus, the retainer and the tapered roller held by the retainer are loose relative to the inner race due to the gap between the projection and the recess.

If the outer race is assembled in a state in which the tapered roller is tilted by the self-adapting posture of the tapered race on the rolling surface of the inner race, for example, a portion other than the rolling race of the outer race touches the circumference of the tapered roller. The surface is left with an indentation on the circumference of the tapered roller. Therefore, the operator must carefully assemble the outer race while paying attention to the posture of the retainer with respect to the inner race, and the operability is poor.

The present invention has been made in view of the above-described circumstances, and an object of the invention is to provide a bearing and a device including the bearing which are easy to determine the posture of the retainer with respect to the posture of the inner race and the outer race at the time of assembly. [Technical means to solve the problem]

A bearing according to an embodiment of the present invention includes: an outer race; an inner race that is disposed concentrically with the outer race; a plurality of rollers disposed between the outer race and the inner race; and maintaining , which holds a plurality of rollers. The retainer has a guide that determines the posture of the retainer relative to the one race by abutting one of the inner race and the outer race during assembly.

In the bearing configured as described above, the posture of the retainer with respect to the one race is determined by abutting the guide portion of the retainer against one of the inner race and the outer race. Therefore, for example, it is possible to avoid a problem that a portion other than the rolling surface of the other race touches the circumferential surface of the roller when the other race is assembled to the one race, thereby leaving an indentation on the circumferential surface of the roller.

Further, in an embodiment of the present invention, the retainer may have a configuration having a regulating portion that regulates the direction of the rotation axis of the rolling element and the direction orthogonal to the direction of the rotation axis. At this time, the posture of the regulating portion with respect to the rolling surface of the one ring is determined by the guiding portion abutting on the one turn during assembly.

Further, in an embodiment of the present invention, the retainer may have a plurality of columns arranged in a concentric shape and connected to each other by a plurality of columns arranged at a predetermined interval in the circumferential direction of the annular body. The composition of the shape. In this case, the guide portion may be formed such that one of the pair of annular bodies protrudes outward in the radial direction of the annular body over the entire circumference or portion of the annular body.

Further, in the bearing according to an embodiment of the present invention, it is possible to adopt a configuration in which the position of the retainer relative to the one turn is determined by the guide portion abutting on the one turn during assembly.

Moreover, in an embodiment of the present invention, it is possible that the one ring has a reference surface that faces upward when the rolling surface of the one ring is in the upward direction, and the retainer abuts when the assembly is assembled. When it is on the reference plane, it determines the composition of its posture relative to a circle.

Further, in an embodiment of the present invention, it is possible that the one ring has a reference surface that faces downward when the rolling surface of the one ring is in a downward direction, and the retainer is used when the guide is assembled. When connected to the reference plane, the composition of the posture relative to the circle is determined.

Further, in an embodiment of the present invention, the guide portion may have a configuration having a guide surface for determining the posture of the holder with respect to the one-lap by contact with the reference surface during assembly.

Further, an apparatus including a bearing according to an embodiment of the present invention includes: a first member assembled for a circle; a second member assembled for the inner race and the other race of the outer race; and a sealing member configured And sealing the gap between the first member and the second member at a position facing the reference.

Further, the device including the bearing according to the embodiment of the present invention may further include a member for moving the holder placed on the sealing member at the time of assembly toward the reference surface side and bringing the guiding portion into contact with the reference surface. Composition.

Further, the device including the bearing according to the embodiment of the present invention may be configured such that the retainer is placed on the sealing member in a posture in which the guide portion faces the reference surface at the time of assembly, and the sealing member is sealed. The annular member having the annular gap between the first member and the second member, the mechanism for abutting is formed on the other race, and protrudes outward in the radial direction with respect to the rolling surface of the other race, and has income The outer diameter of the inner diameter portion of the sealing portion is such that when the second member is assembled to the first member, the retainer is brought into contact with the retainer and the rolling element placed on the sealing portion through the inner diameter portion of the sealing portion And the rolling element moves toward the reference surface side without changing the posture, and the guide portion abuts against the reference surface. [Effects of the Invention]

According to an embodiment of the present invention, a bearing and a bearing including a structure in which a posture of a retainer is appropriately determined with respect to an inner race and an outer race at the time of assembly are provided.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Embodiment 1] This embodiment 1 relates to a bearing 10 that rotatably supports the first member 1A and the second member 1B. Fig. 1 is a cross-sectional view showing a bearing 10 disposed in the apparatus 1 (a cross-sectional view taken along a plane including a rotation axis AX1). When the apparatus 1 is a speed reducer, the first member 1A is, for example, a part (housing) that is rotated at a rotational speed decelerated from the rotational speed of the servo motor by the power transmitted from the swing gear incorporated in the speed reduction mechanism. Further, the second member 1B is, for example, a member (shaft) that swingably supports the swing gear, or a member (holding flange) that holds the swing gear between the member (shaft). Examples of the device 1 include a working machine, a rolling machine, an aircraft, an automobile, and a railway, in addition to the speed reducer.

As shown in FIG. 1, the bearing 10 is a roller bearing, and includes a plurality of rollers 110, a retainer 120, an outer race (outer ring) 130, and an inner race (inner ring) 140.

The outer race 130 and the inner race 140 are annular members that are concentrically arranged and have different diameters around the center of the rotation axis AX1. The outer race 130 and the inner race 140 are respectively attached to the first member 1A and the second member 1B of the apparatus 1 by press fitting or the like.

The outer race 130 and the inner race 140 respectively have a rolling surface 132 and a rolling surface 142 that are inclined with respect to the rotation axis AX1. A retainer 120 is disposed between the rolling surface 132 of the outer race 130 and the rolling surface 142 of the inner race 140.

2 is a perspective view of a stand-alone unit 120. As shown in Fig. 2, the holder 120 is a resin-made basket-shaped holder having a plurality of dimples P, and is formed in an annular shape.

The holder 120 has a first annular portion 122, a second annular portion 124, and a plurality of posts 126. The first annular portion 122 is an annular portion formed on one end side of the retainer 120 in the axial direction of the bearing 10. The second annular portion 124 is an annular portion formed on the other end side of the retainer 120 in the axial direction of the bearing 10. The second annular portion 124 is disposed concentrically with the first annular portion 122 and has a smaller diameter than the first annular portion 122.

The plurality of columns 126 are arranged at a predetermined interval in the circumferential direction around the rotation axis AX1 between the first annular portion 122 and the second annular portion 124. Each of the columns 126 extends between the first annular portion 122 and the second annular portion 124 and connects the first annular portion 122 and the second annular portion 124. Thereby, the holder 120 is formed in a truncated cone shape as a whole.

The dimple P has a rectangular shape surrounded by the first annular portion 122, the second annular portion 124, and the adjacent two columns 126. Each of the dimples P holds the roller 110. In the bearing 1 of the present embodiment, the retainer 120 holding the roller 110 in each of the dimples P is assembled to the outer race 130, and secondly, the roller 110 and the retainer are interposed between the outer race 130 and the outer race 130. The inner race 140 is assembled in a 120 way. Further, the roller 110 receives the dimple P from below the dimple P. Here, the width of the dimple P (the interval between the adjacent two columns 126) is slightly narrower than the diameter of the roller 110. To prevent the roller 110 from falling out of the dimple P before assembly toward the outer race 130, for example, it is pressed into the dimple P (between the two columns 126 connected).

Each of the rollers 110 is rotated between the outer race 130 and the inner race 140, and is rotated about the rotation axis AX2 inclined with respect to the rotation axis AX1 while rolling on the rolling surfaces of the rolling surface 132 and the rolling surface 142. Thereby, the outer race 130 (and the first member 1A) and the inner race 140 (and the second member 1B) are relatively rotated about the rotation axis AX1 via the roller 110.

In addition, in the dimple P, the roller 110 is regulated by the gauge surface 122A of the first annular portion 122 and the gauge surface 124A of the second annular portion 124 in the direction of the rotation axis AX2. Further, in the dimple P, the roller 110 is defined by the side surface 126A of the adjacent two columns 126, the rolling surface 132, and the rolling surface 142, and the displacement in the direction orthogonal to the rotation axis AX2 is regulated. That is, the first annular portion 122, the second annular portion 124, and the column 126 function as a regulating portion that regulates the direction of the rotation axis AX2 of the roller 110 and the direction orthogonal to the direction of the rotation axis AX2.

Fig. 3 is a longitudinal sectional view showing a state in the middle of assembly of the bearing 10 of the first embodiment. In FIG. 3, the outer race 130 is attached to the first member 1A, and is disposed with the rolling surface 132 facing upward. A plurality of rollers 110 and a holder 120 for holding each of the rollers 110 in each of the dimples P are disposed on the rolling surface 132.

The outer race 130 has a reference surface 134 that forms an angle with respect to the rolling surface 132. The reference surface 134 is a surface that is connected to one end of the rolling surface 132, and is oriented upward when the rolling surface 132 is in the upward direction. In other words, the reference surface 134 is directed downward as the rolling surface 132 is in the downward posture. In the first embodiment, the reference surface 134 is a surface orthogonal to the rotation axis AX1. However, in other embodiments, a surface having an angle other than the rotation axis AX1 may be formed.

A guide portion G is formed on the outer circumference of the first annular portion 122 over the entire circumference thereof. In the guide portion G, a guide surface GS is formed at a position opposed to the reference surface 134 of the outer race 130.

The retainer 120 is disposed on the outer race 130 such that the guide surface GS abuts (more specifically, the surface contact) to the reference surface 134 of the outer race 130. The position of the retainer 120 relative to the outer race 130 is determined by the guide portion G (the guide surface GS) abutting against the specific position (reference surface 134) of the outer race 130 and the posture of the retainer 120 is determined.

Specifically, both the guide surface GS of the guide portion G and the reference surface 134 of the outer race 130 have an annular shape. Further, the guide surface GS and the reference surface 134 have substantially the same width in the radial direction. The holder 120 is disposed on the outer race 130 by the overall surface contact of the guide surface GS with the reference surface 134, and the position of the retainer 120 relative to the outer race 130 is determined as a design intent. The appropriate location.

Further, in the case where the holder 120 is assembled to the outer race 130 in a posture in which the guide surface GS is inclined with respect to the reference surface 134, for example, the guide surface GS is brought into surface contact with the reference surface 134, thereby correcting the above. Tilting, such that the position of the retainer 120 relative to the outer race 130 is determined to be a suitable orientation for the design.

Since the position and posture of the retainer 120 with respect to the outer race 130 are determined to be appropriate positions and postures, the portion where the dimple P is formed is also appropriately determined (the first annular portion 122, the second annular portion 124, and the phase). The position and posture of the adjacent two columns 126) with respect to the rolling surface 132 of the outer race 130. Since the roller 110 is press-fitted into the recess P which is disposed at an appropriate position and posture with respect to the rolling surface 132, the position and posture of the roller 110 on the rolling surface 132 are also suitable positions and postures.

When the guide surface GS abuts against the reference surface 134, the roller 110 pressed into the recess P is in a state of being extremely slightly suspended with respect to the rolling surface 132 of the outer race 130. As shown in FIG. 3, when the inner race 140 is assembled from above the outer race 130, the roller 110 pressed into the recess P is pressed downward by the rolling surface 142 of the inner race 140 and with the rolling surface 132. The contact is in a state in which a uniform load (preload) is applied between the rolling surface 132 and the rolling surface 142 and is held in the dimple P.

As described above, in the first embodiment, the position and posture of the retainer 120 and each of the rollers 110 with respect to the outer race 130 are appropriately determined by the guide surface GS abutting against the reference surface 134. Therefore, for example, it is possible to avoid a problem that a portion other than the rolling surface 142 of the inner race 140 touches the circumferential surface of the roller 110 and leaves an indentation on the circumferential surface of the roller 110. Thus, the operator can easily assemble the inner race 140.

[Embodiment 2] Embodiment 2 will be described with reference to Figs. 4 to 6 . The second embodiment is a device 1' having a configuration in which the second members 1B and 1B' are attached to the first member 1A via the two bearings 10a and 10b, respectively. A cross-sectional view of the device 1' (a cross-sectional view taken along the plane including the rotation axis AX1) is shown in Fig. 4(a). The device 1' is, for example, a speed reducer. When the device 1' is a speed reducer, the first member 1A is, for example, a housing of the speed reducer, and the second member 1B and the second member 1B' are respectively a shaft of the speed reducer and a retaining flange of the speed reducer. Further, as the apparatus 1', in addition to the speed reducer, a working machine, a rolling machine, an aircraft, an automobile, a railway, or the like may be mentioned.

As shown in Fig. 4(a), in the device 1', the first member 1A and the second member 1B are rotatably held by each other via the bearing 10a, and the first member 1A and the second member 1B are further supported via the bearing 10b. 'It can be held in rotation. Both the bearing 10a and the bearing 10b have the same configuration as the bearing 10 of the first embodiment. Hereinafter, for the sake of convenience of explanation, the same components as those of the first embodiment are denoted by the same reference numerals. Specifically, the components of the bearing 10a are indicated by adding a to the end of the component number of the bearing 10, and the components of the bearing 10b are indicated by b at the end of the component number of the bearing 10. Further, as shown in FIG. 4(a), in the bearing 10a, the retainer 120a is disposed with the first annular portion 122a side facing downward. Further, in the bearing 10b, the retainer 120b is disposed in a state in which the first annular portion 122b is directed upward.

An enlarged view of a portion on the lower side of the first member 1A (a portion including the bearing 10a and the sealing portion 2) is shown in Fig. 4(b). As shown in Fig. 4 (b), a bearing 10a is disposed on a portion below the device 1', and the first member 1A and the second member 1B are rotatably held by each other via a bearing 10a. At the bottom of the first member 1A, the sealing portion 2 is attached between the inner surface of the first member 1A and the outer surface of the second member 1B, whereby the inner space of the device 1' is sealed from the outside.

5(a) to 5(e) are views showing the assembly of the device 1'. First, as shown in FIG. 5(a), the two outer races 130a and 130b are attached to the first member 1A (for example, a casing of a reduction gear) by press fitting or the like.

Next, as shown in Fig. 5 (b), the holder 120a holding the roller 110a is brought closer to the outer race 130a from the lower side with the second annular portion 124a side up. Further, the roller 110a is received from the recess Pa above the dimple Pa. The width of the dimple Pa (the spacing between the adjacent two columns 126a) is slightly narrower than the diameter of the roller 110a. Therefore, the roller 110a which is received by the dimple Pa is supported by the adjacent two columns 126a, and is detached from the holder 120a without coming off the dimple Pa.

Next, as shown in FIG. 5(c), the sealing portion 2 is attached to the first member 1A. Specifically, the sealing portion 2 is an elastically deformable annular member having an outer diameter slightly larger than the inner diameter portion 1Aa of the first member 1A. The seal portion 2 is fitted into the inner diameter portion 1Aa of the bottom portion of the first member 1A by elastic deformation.

On the side opposite to the guide surface GSa of the guide portion Ga of the retainer 120a, the mounting surface 122aB is formed over the entire circumference or portion of the first annular portion 122a in the circumferential direction. The holder 120a is placed on the inner wall surface 2A of the sealing member 2 attached to the first member 1A with the mounting surface 122aB as the bottom surface and the guiding surface GSa and the reference surface 134a of the outer race 130a facing each other. The holder 120a is temporarily held by the first member 1A via the sealing portion 2 by placing the holder 120a on the inner wall surface 2A. Therefore, in the case where the holding mechanism (the operator's hand or the jig, etc.) is held by the retainer 120a, the retainer 120a does not fall off from the first member 1A.

Here, a configuration of the inner race 140a attached to the second member 1B (for example, the shaft of the reduction gear) by press fitting or the like will be described with reference to Fig. 6 . The inner race 140a is formed with a flange portion 144a that protrudes outward in the radial direction with respect to the rolling surface 142a and has an outer diameter that accounts for the inner circumference of the seal portion 2. The flange portion 144a is formed over the entire circumference or a part of the circumferential direction of the inner race 140a, and has a claw portion 146a extending in a direction orthogonal to the radial direction of the inner race 140a (see an enlarged view of Fig. 6).

As shown in FIGS. 5(d) and 5(e), the second member 1B is assembled to the first member 1A. Specifically, the second member 1B is lifted toward the first member 1A side (upward in the direction of the rotation axis AX1) so that the flange portion 144a of the inner race 140a passes through the inner diameter portion of the seal portion 2. The holder 120a is placed on the sealing portion 2 in a state where one portion of the roller 110a is radially inward with respect to the inner diameter portion of the sealing portion 2. When the flange portion 144a passes through the inner diameter portion of the sealing portion 2, the claw portion 146a is hooked on the end surface of the roller 110a. When the second member 1B is lifted toward the first member 1A side in a state where the claw portion 146a is hooked on the end surface of the roller 110a, the claw portion 146a is slightly pushed up by the roller 110a from the post 126a of the holder 120a. The column 126a is abutted, and the holder 120a and the roller 110a are pushed up toward the first member 1A side.

The roller 110a and the retainer 120a are lifted toward the first member 1A side by the inner race 140a (mainly the claw portion 146a) without changing the posture. Therefore, the guide surface GSa is in surface contact (contact) with the reference surface 134a while maintaining the state facing the reference surface 134a. In other words, the flange portion 144a (the claw portion 146a) has a function of moving the holder 120a placed on the sealing portion 2 toward the reference surface 134a side and abutting the guide portion GSa against the reference surface 134a.

As shown in FIG. 5(e), when the guide surface GS abuts against the reference surface 134a, the position and posture of the retainer 120a and the roller 110a with respect to the outer race 130a are determined to be appropriate positions and postures. Further, as shown in FIG. 5(e), the sealing portion 2 seals the gap (the annular gap) between the first member 1A and the second member 1B. By sealing the gap between the first member 1A and the second member 1B by the sealing portion 2, the lubricating oil filled around the bearings 10a and 10b is prevented from leaking to the outside.

In the second embodiment, in the process of assembling the second member 1B to the first member 1A, the position and posture of the retainer 120a and the roller 110a are naturally determined to be appropriate positions and postures. Therefore, for example, it is possible to avoid a problem that a portion other than the rolling surface 142a of the inner race 140a touches the circumferential surface of the roller 110a and leaves an indentation on the circumferential surface of the roller 110a. Therefore, the operator can easily assemble the inner race 140a.

As shown in Fig. 5(e), the retainer 120b is placed on the outer race 130b such that the guide surface GSb is in contact (contact) with the reference surface 134b of the outer race 130b. When the guide surface GS abuts against the reference surface 134b, the position and posture of the retainer 120b and the roller 110b with respect to the outer race 130b are appropriately determined in the same manner as in the first embodiment.

Further, as shown in Fig. 5(e), the inner race 140b is attached to the second member 1B' (e.g., the retaining flange) by press fitting or the like.

Next, the inner race 140b is assembled to the outer race 130b in the same manner as the assembly flow described with reference to Fig. 3 . Since the position and posture of the retainer 120b and the roller 110b with respect to the outer race 130b are appropriately determined, for example, it is possible to prevent a portion other than the rolling surface 142b of the inner race 140b from contacting the circumferential surface of the roller 110b at the roller 110b. The peripheral surface leaves an indentation. The inner race 140b can be easily assembled by an operator.

The above is illustrative of an exemplary embodiment of the invention. The embodiments of the present invention are not limited to the above-described contents, and various changes can be made within the scope of the technical idea of the present invention. For example, the embodiments of the present invention, such as the embodiments of the present invention, which are exemplified in the specification, or the like, are also included in the embodiments of the present invention.

In the above embodiment, as shown in FIG. 2, the guide portion G is formed over the entire circumference of the first annular portion 122. On the other hand, in other embodiments, the guide portion G is not limited to the entire circumference of the first annular portion 122 and is formed only partially. As an example, it is possible that the guide portion G has an angular size of about 20 ,, and two of them are formed at intervals of 180 周 in the circumferential direction of the first annular portion 122 or three at intervals of 120 。. That is, by adopting the configuration in which the guide surface GS abuts against the reference surface 134 at least two places, the position and posture of the holder 120 with respect to the outer race 130 can be appropriately determined.

In the above embodiment, the outer race 130 and the inner race 140 are relatively rotated in a state where the guide surface GS is in contact with the reference surface 134. On the other hand, in the other embodiment, the outer race 130 and the inner race 140 can be relatively rotated in a state where the guide surface GS does not contact the reference surface 134. Specifically, when the inner race 140 is assembled to the outer race 130, a strong preload can be applied to the above embodiment. Thereby, the retainer 120 is elastically deformed such that, for example, a portion of the inner race 140 is in contact with the retainer 120, and the guide surface GS is floated by a specific amount from the reference surface 134. At this time, the outer race 130 and the inner race 140 are relatively rotated in a state where the guide surface GS is not in contact with the reference surface 134. Therefore, wear of the guide surface GS and the reference surface 134 can be avoided.

Further, in the above-described embodiment, the outer race 130 of the bearing 10 and the first member 1A of the apparatus 1 are formed of individual structures, but in other embodiments, the outer race 130 and the first member 1A may be integrated. Ground formation. Similarly, in the above embodiment, the inner race 140 of the bearing 10 and the second member 1B of the device 1 are configured as individual structures, but in other embodiments, the inner race 140 and the second member 1B may be Formed integrally.

Further, in the above-described embodiment, the guide portion G is formed in the first annular portion 122 of the retainer 120. However, in another embodiment, the guide portion G may be formed in the second annular portion 124 ( And guiding surface GS). At this time, a reference surface of the outer race 130 (or the inner race 140) is formed at a position facing the guide surface GS of the second annular portion 124.

Further, in the above-described embodiment, the roller 110 is a cylindrical roller, but in other embodiments, it may be replaced by a tapered roller.

Further, in the above-described embodiment, the inner race 140 is assembled in a state in which the retainer 120 and the roller 110 are determined to be in an appropriate position and posture with respect to the outer race 130. However, in another embodiment, It is possible to adopt a configuration in which the outer race is assembled in a state in which the retainer and the roller are determined to be in a proper position and posture with respect to the inner race. This configuration will be described with reference to Fig. 7 .

Fig. 7 is a view similar to Fig. 3 for explaining the assembly of the bearing 10". As shown in Fig. 7, the inner race 140" is provided with a reference face 144" having the same function as the reference face 134, the retainer 120" has a guiding surface GS" at a position opposite to the reference plane 144". In the embodiment of Fig. 7, the retainer 120" is attached to the inner race 140" with the guide surface GS" abutting against the reference surface 144" of the inner race 140". By the guide G" The (guide surface GS") abuts against a specific position (reference surface 144" of the inner race 140", and determines the position of the retainer 120" relative to the inner race 140" and determines the posture of the retainer 120". Therefore, the operator can assemble the outer race 130" to the inner race 140" without leaving an indentation on the circumferential surface of the roller 110".

1‧‧‧ device

1’‧‧‧ device

1A‧‧‧ first component

1Aa‧‧‧Down section

1B‧‧‧ second component

1B’‧‧‧ second component

1B”‧‧‧Second component

2‧‧‧ Sealing Department

2A‧‧‧ inner wall

10‧‧‧ bearing

10a‧‧‧ bearing

10b‧‧‧ bearing

10"‧‧‧ bearing

110‧‧‧Roller

110a‧‧‧Roller

110b‧‧‧Roller

110”‧‧‧Roller

120‧‧‧keeper

120a‧‧‧keeper

120b‧‧‧keeper

120"‧‧‧ keeper

122‧‧‧First ring

122A‧‧‧Regular surface

122a‧‧‧First ring

122aB‧‧‧Loading surface

124‧‧‧Second ring

124A‧‧‧ regulatory surface

124a‧‧‧second ring

126‧‧ ‧ column

126A‧‧‧ side

130‧‧‧Outer Seat/Outer Ring

130a‧‧‧Outer seat

130b‧‧‧Outer seat

130”‧‧‧Outer seat

132‧‧‧ rolling surface

134‧‧ ‧ datum

134a‧‧ ‧ datum

134b‧‧ ‧ datum

140‧‧‧Inner ring/inner ring

140a‧‧‧ inner seat

140b‧‧‧ inner seat

140"‧‧‧ inner seat

142‧‧‧ rolling surface

142a‧‧‧ rolling surface

144a‧‧‧Flange

144"‧‧‧ datum

146a‧‧‧ claws

AX1‧‧‧Rotary axis

AX2‧‧‧Rotary axis

G‧‧‧Guide

G"‧‧‧Guide

GS‧‧‧ guiding surface

GS"‧‧‧ guiding surface

GSa‧‧‧ guiding surface

GSb‧‧‧ guiding surface

P‧‧‧ dimple

Fig. 1 is a partial cross-sectional view showing an apparatus including a bearing according to a first embodiment of the present invention. Fig. 2 is a perspective view of a retainer provided in a bearing according to a first embodiment of the present invention. Fig. 3 is a longitudinal sectional view showing a state in the middle of assembly of the bearing according to the first embodiment of the present invention. 4(a) and 4(b) are cross-sectional views showing the apparatus of the second embodiment of the present invention. 5(a) to 5(e) are views for explaining the assembly of the apparatus of the second embodiment of the present invention. Fig. 6 is a cross-sectional view showing the structure of an inner race attached to a second member disposed on the lower side in the apparatus of the second embodiment of the present invention. Fig. 7 is a longitudinal sectional view showing a state in the middle of assembly of a bearing according to another embodiment of the present invention.

Claims (10)

A bearing comprising: an outer race; an inner race disposed concentrically with the outer race; a plurality of rollers disposed between the outer race and the inner race; and a retainer And retaining the plurality of rollers; and the retainer has: a guiding portion that determines the retainer relative to the one by abutting one of the inner race and the outer race during assembly The posture of the circle. The bearing of claim 1, wherein the retainer has: a regulation portion that regulates a direction of a rotation axis of the rolling element and a direction orthogonal to a direction of the rotation axis; and the guide portion abuts during assembly Connected to the aforementioned circle, and the posture of the aforementioned regulation portion relative to the rolling surface of the one circle is determined. The bearing according to claim 1 or 2, wherein the retainer has a plurality of columns arranged in a concentric shape and connected to each other by a plurality of columns arranged at a predetermined interval in a circumferential direction of the annular body. The guide portion is formed in one of the pair of annular bodies so as to protrude outward in the radial direction of the annular body over the entire circumference or portion of the annular body. A bearing according to claim 1 or 2, wherein the position of said retainer relative to said one race is determined by abutment of said guide portion against said one race during assembly. The bearing of claim 1 or 2, wherein the one of the plurality of rings has a reference surface that faces upward when the rolling surface of the one ring is in an upward direction; and the guide portion abuts the aforementioned when the holder is assembled When the datum is used, it is determined relative to the posture of the aforementioned circle. The bearing of claim 1 or 2, wherein the one of the plurality of rings has a reference surface that faces downward when the rolling surface of the one ring is in a downward direction; and the guiding portion abuts the aforementioned portion when the retainer is assembled When the datum is used, it is determined relative to the posture of the aforementioned circle. The bearing of claim 1 or 2, wherein the guiding portion has a guiding surface for determining a posture of the retainer relative to the one-lap by contact with the reference surface at the time of assembly. A device having a bearing as claimed in claim 6 or claim 7 of claim 6 and having: a first member for assembling the aforementioned one ring; a second member for the inner race and the aforementioned outer The other race in the race is assembled; and the sealing member is disposed at a position facing the reference to seal the gap between the first member and the second member. The apparatus according to claim 8 further comprising means for moving the holder placed on the sealing member at the time of assembly toward the reference surface side to bring the guide portion into contact with the reference surface. The device of claim 9, wherein the holder is placed on the sealing member in a posture in which the guiding portion and the reference surface face each other when assembled; the sealing member seals the first member and the second member a ring-shaped member having a ring-shaped gap; the mechanism for abutting is formed on the other race; the rolling surface of the other race protrudes outward in the radial direction, and has an income inside the seal portion The outer diameter of the diameter portion; when the second member is assembled to the first member, the inner diameter portion of the sealing portion is brought into contact with the retainer and the rolling element placed on the sealing portion to maintain the second member The rolling element and the rolling element move toward the reference surface side without changing the posture, and the guiding portion abuts against the reference surface.