JP2013117298A - Bearing unit with retainer plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing unit with a retainer plate that increases the efficiency of assembly work to improve the productivity.SOLUTION: A protrusion 17 protruding outward in a radial direction is formed on an outer periphery of a reduced diameter portion 16 positioned apart from a non-reduced diameter portion 19. A thin plate-like locking part 20a is disposed on an inner peripheral surface of a circular hole 10 such that a tip thereof is positioned at a side closer to the non-reduced diameter part 19 than to the protrusion 17 in a direction of the rotational axis of a bearing 5, and on an inner side than the outer peripheral surface of the protrusion 17 in a diameter direction of the bearing 5. When force to separate the bearing 5 and the retainer plate 6 is applied, the locking part 21a and the protrusion 17 are collided with each other to prevent the bearing 5 and the retainer plate 6 from separating from each other.

Description

  The present invention relates to a retainer plate that rotatably supports, for example, an end portion of a rotating shaft that constitutes an automobile transmission (manual transmission and automatic transmission) on an inner surface of a housing that accommodates components of the automobile transmission. The present invention relates to a bearing unit.

  Conventionally, a retainer comprising a metal bearing having an outer ring, an inner ring, an outer ring, and a large number of balls interposed between the outer ring and the inner ring, and a metal retainer plate externally fitted to the outer ring. There is a bearing unit with a retainer plate that is fixed to an inner surface or the like of a housing that accommodates an automobile transmission by a bolt or the like that passes through a fixing hole formed in the plate and supports an end portion of a rotating shaft.

  In such a bearing unit with a retainer plate, the retainer plate includes grooves formed on the outer peripheral portion of the outer ring, and protrusions provided to protrude radially inward at a plurality of locations on the inner peripheral portion of the retainer plate. There is one in which the outer ring is pushed into the inner peripheral part of the outer ring so that the protruding part gets over the outer peripheral surface from the axial end of the outer ring to the groove part and is locked in the groove part (see Patent Document 1). According to this, since there is no need to use a retaining ring or the like for locking, the number of parts can be reduced, the cost can be reduced, the efficiency of assembly work can be increased, and the productivity can be improved.

JP 2009-36319 A

  However, in such a bearing unit with a retainer plate, as shown in FIG. 8 (a), when the protrusion 1 gets over the outer peripheral surface of the outer ring 2, the deformation amount of the outer ring 2 is large, and the ball side of the outer ring 2 There is a possibility that the ball 3 may be damaged by the surface. This is particularly problematic when the outer ring 2 has a small cross-sectional dimension and low rigidity.

  Further, in such a bearing unit with a retainer plate, as shown in FIG. 8B, the protrusion 1 may be damaged when the protrusion 1 gets over the outer peripheral surface of the outer ring 2. This is particularly problematic when the outer ring 2 has a large cross-sectional dimension and high rigidity.

  In view of such a problem, an object of the present invention is to provide a bearing unit with a retainer plate capable of improving the efficiency of assembly work and improving the productivity.

In order to solve the above problems, in the present invention, an outer ring having a reduced diameter portion formed at an end portion of the outer peripheral portion and a non-reduced diameter portion having a larger diameter than the reduced diameter portion is formed on the outer peripheral portion. A bearing unit with a retainer plate, wherein the bearing unit includes a retainer plate having a circular hole portion larger than the outer diameter of the reduced diameter portion, and the circular hole portion and the reduced diameter portion are fitted to each other. On the outer peripheral part of the reduced diameter part, it has a protruding part protruding outward in the radial direction,
When the inner peripheral surface of the circular hole has a locking portion having an inner diameter smaller than the outer diameter of the protrusion, and when a force for separating the bearing and the retainer plate is applied, the locking portion A bearing unit with a retainer plate, wherein the bearing and the retainer plate are configured not to come into contact with each other and the projection is separated from each other. The retaining portion provided on the peripheral surface is mounted over the protrusion from the end of the outer ring on the side where the protrusion is provided in the rotational axis direction, whereby the retainer plate and the bearing are The retainer play is characterized in that the amount of deformation of the locking portion when the protrusion is mounted is larger than the amount of deformation of the outer ring. To provide a bearing unit attached.

  Preferably, the locking portion extends from the non-diameter-reduced portion side to the protruding portion side while being inclined with respect to the rotation axis direction of the bearing.

  Preferably, the engaging portion has a distal end portion closer to the non-diametered portion side than the projecting portion in the rotation axis direction of the bearing and inside the outer peripheral surface of the projecting portion in the radial direction of the bearing. It arrange | positions so that it may be located.

  Preferably, the protruding portion extends in the circumferential direction over the entire circumference.

  Preferably, the locking portion is provided at two or more locations in the circumferential direction.

  Preferably, the locking portion extends in the circumferential direction over the entire circumference.

  ADVANTAGE OF THE INVENTION According to this invention, the bearing unit with a retainer plate which can aim at the improvement of productivity by improving the efficiency of assembly work can be provided.

It is a top view of the bearing unit with a retainer plate concerning a 1st embodiment of this application. It is AA sectional drawing shown in FIG. 1 of the bearing unit with a retainer plate which concerns on 1st Embodiment of this application. It is an expanded sectional view of the bearing unit with a retainer plate concerning a 1st embodiment of this application. It is a top view which shows the retainer plate which concerns on 1st Embodiment of this application. It is sectional drawing which shows the assembly method of the bearing unit with a retainer plate which concerns on 1st Embodiment of this application. (A) The state before an assembly is shown. (B) The state during assembly is shown. (C) The state after assembly is shown. It is sectional drawing which shows the processing method of the latching | locking part of the retainer plate which concerns on 1st Embodiment of this application. (A) A mode that the latching | locking part is processed into the smooth inner peripheral surface of the hole provided in the plate material used as a retainer plate is shown. (B) A state in which the locking portion is processed on the inner peripheral surface provided with the step portion of the hole portion provided in the plate material to be the retainer plate is shown. It is an expanded sectional view showing a retainer plate concerning a 2nd embodiment of this application. It is sectional drawing which shows the problem in the assembly of the retainer plate which concerns on a prior art example. (A) A state where the outer ring is deformed is shown. (B) A state where the protrusion is damaged is shown. It is an expanded sectional view showing a bearing unit with a retainer plate concerning a 3rd embodiment of this application. (A) The vicinity of the locking portion is shown. (B) The engagement allowance after combining with the engagement allowance before combining the retainer plate and the bearing is shown. It is an expanded sectional view showing a bearing unit with a retainer plate concerning a 4th embodiment of this application. It is drawing which shows the latching | locking part which has not provided the escape groove part in the edge part of the retainer plate which concerns on 4th Embodiment of this application. (A) It is a perspective view which shows the edge part vicinity of a latching | locking part. (B) It is a side view which shows the edge part vicinity of a latching | locking part. (C) It is sectional drawing which shows the edge part vicinity of a latching | locking part. It is drawing which shows the latching | locking part which provided the escape groove part in the edge part of the retainer plate which concerns on 4th Embodiment of this application. (A) It is a perspective view which shows the edge part vicinity of a latching | locking part. (B) It is a side view which shows the edge part vicinity of a latching | locking part. (C) It is sectional drawing which shows the edge part vicinity of a latching | locking part. It is sectional drawing which shows the bearing unit with a retainer plate which concerns on 5th Embodiment of this application. (A) It is an expanded sectional view near a locking part. (B) It is sectional drawing which shows the processing method of a latching | locking part. It is an expanded sectional view near the latching | locking part of the bearing unit with a retainer plate which concerns on 6th Embodiment of this application. It is an expanded sectional view near the latching | locking part of the bearing unit with a retainer plate which concerns on 7th Embodiment of this application. It is sectional drawing which shows the bearing unit with a retainer plate which concerns on 8th Embodiment of this application. (A) It is an expanded sectional view near a locking part. (B) It is sectional drawing which shows the processing method of a latching | locking part. It is an expanded sectional view near the latching | locking part of the bearing unit with a retainer plate which concerns on 9th Embodiment of this application. It is sectional drawing which shows the bearing unit with a retainer plate which concerns on 10th Embodiment of this application. (A) It is an expanded sectional view near a locking part. (B) It is sectional drawing which shows the processing method of a latching | locking part. It is an expanded sectional view near the latching | locking part of the bearing unit with a retainer plate which concerns on 11th Embodiment of this application.

(First embodiment)
A bearing unit with a retainer plate according to a first embodiment of the present application will be described with reference to FIGS.

  FIG. 1 is a plan view showing a bearing unit 4 with a retainer plate according to the first embodiment. The bearing unit 4 with a retainer plate according to the first embodiment includes a bearing 5 and a metal retainer plate 6 fitted on the bearing 5.

  FIG. 2 shows an AA cross section shown in FIG. The bearing 5 is interposed between a metal outer ring 7, a metal inner ring 8 disposed radially inside the outer ring 7, and an inner ring surface of the outer ring 7 and an outer ring surface of the inner ring 8 so as to be able to roll. And a large number of balls 9 made of metal. The retainer plate 6 has a plate shape, and a circular hole 10 is formed at the center. The circular hole 10 is fitted to the outer peripheral surface of the outer ring 7. It is preferable that the metal rigidity of the retainer plate 6 is lower than the metal rigidity of the outer ring 7.

  The bearing unit 4 with a retainer plate includes, for example, an inner ring 7 fitted and fixed to a circular recess (not shown) provided on the inner surface of a housing of an automobile transmission, and the bearing 5 is pressed against the recess by the retainer plate 6. By inserting a rotation shaft such as a counter shaft into the inner ring 8, the rotation shaft is rotatably supported by the housing.

  FIG. 3 is an enlarged view of the upper cross section shown in FIG. An inner rolling surface 18 having a circular arc shape extending in the circumferential direction is formed at the center of the outer peripheral portion of the inner ring 8 in the rotation axis direction of the bearing (hereinafter simply referred to as “axial direction”). Further, on both sides of the inner rolling surface 18, seal sliding contact groove portions 12 a and 12 b are formed in which the annular seals 11 a and 11 b are in sliding contact.

  An outer rolling surface 14 having a circular arc cross section extending in the circumferential direction is formed at the center in the axial direction of the inner circumferential portion of the outer ring 7, and forms a rolling path for the ball 9 together with the opposing inner rolling surface 18. doing. Further, seal attachment groove portions 15a and 15b extending in the circumferential direction are formed on both sides of the outer rolling surface 14, and annular seals 11a and 11b are mounted in the seal attachment groove portions 15a and 15b. . The seals 11a and 11b have an effect of closing a gap between the outer ring 7 and the inner ring 8 and preventing gear wear powder and the like from entering the rolling path.

  A plurality of balls 9 are interposed in a rolling path constituted by the inner rolling surface 18 and the outer rolling surface 14, and are held by the ball holder 13 so as to be able to roll.

  A reduced diameter portion 16 having a smaller outer diameter than the other portion (hereinafter referred to as “non-reduced diameter portion 19”) is formed at one end in the axial direction of the outer peripheral portion of the outer ring 7. ing. The dimension of the reduced diameter portion 16 in the axial direction is substantially the same as the thickness (axial dimension) of the retainer plate 6. Compared with the case where the retainer plate 6 is disposed so as to face the side surface of the bearing 5 by providing the reduced diameter portion 16 and externally fitting the retainer plate 6, the entire bearing unit 4 with the retainer plate by the thickness of the retainer plate 6. The axial dimension can be shortened. On the outer peripheral portion of the end portion of the reduced diameter portion 16 on the side opposite to the non-reduced diameter portion 19, a convex portion 17 is formed that protrudes radially outward and extends in the circumferential direction over the entire circumference. The outer diameter dimension of the convex portion 17 is smaller than the outer diameter dimension of the non-reduced diameter portion 19. In the present invention, the convex portion 17 is not necessarily formed at the end portion of the reduced diameter portion 16, and the locking portions 20 a to 20 c are not contacted with the non-reduced diameter portion 19 in the axial direction. It suffices if it can be accommodated.

  The inner diameter dimension of the circular hole 10 of the retainer plate 6 is larger than the outer diameter dimension of the convex portion 17 of the outer ring 7 and smaller than the outer diameter dimension of the non-diametered portion 19 of the outer ring 7. As a result, the bearing 5 does not come out of the circular hole portion 10 while providing a gap between the inner peripheral surface of the circular hole portion 10 and the outer peripheral surface of the reduced diameter portion 16. Further, a thin plate-like locking portion extending from the portion on the non-reduced diameter portion 19 side of the inner peripheral surface of the circular hole portion 10 of the retainer plate 6 toward the convex portion 17 side with an inclination angle with respect to the axial direction. 20a is formed. As described above, the locking portion 20a is formed in a slanted thin plate shape so that the locking portion 20a is more easily deformed than the outer ring 7, thereby preventing damage in assembling the bearing unit.

  The leading end portion of the locking portion 20 a is formed with a convex portion 17 in the radial direction and inside the outer peripheral surface of the convex portion 17 in a state where the center of the circle of the circular hole portion 10 and the center of the bearing 5 are aligned. It extends to a position where it does not contact the outer peripheral surface of the reduced diameter portion 16. Further, the distal end portion of the locking portion 20 a extends to a position where it does not contact the convex portion 17 in the axial direction in a state where the retainer plate 6 is in contact with the non-reduced diameter portion 19. In this manner, the retainer plate 6 and the bearing 5 are prevented from being separated and can be handled as a single unit, so that the number of parts can be reduced, and management and assembly operations can be made more efficient. In addition, the retainer plate 6 and the outer ring 7 are combined with a gap so that the retainer plate 6 and the outer ring 7 can rotate relative to each other, so that the fixing holes 21a to 21c can be secured even when the outer ring 7 is fixed. The position in the circumferential direction can be adjusted, and the degree of freedom of attachment when the bearing unit 4 with the retainer plate is attached is improved.

  FIG. 4 is a plan view of the retainer plate 6. 4 is a back surface of the retainer plate 6 shown in FIG. 1 and shows the retainer plate 6 shown in FIG. 2 as viewed from the right side in FIG. The retainer plate 6 has a hexagonal shape such as a regular triangle with a corner cut, and a circular hole 10 is formed at the center. Further, fixing holes 21 a, 21 b, and 21 c are formed at portions that form three vertices protruding radially outward from the circular hole 10. In the present invention, the planar shape of the retainer plate is not limited to this, and the number of fixing holes may be at least two, and may be four or more.

  The fixing holes 21a to 21c protrude in a cylindrical shape toward the front side of the drawing in FIG. 4 by burring (see FIG. 2). Thereby, when assembling, the cylindrical protrusions are inserted into the corresponding holes formed in the housing or the like, so that the fixing holes 21a to 21c can be easily positioned. . In addition, you may form a screw groove in the internal peripheral surface of the hole parts 21a thru | or 21c for fixation. In that case, it can fix with the volt | bolt etc. which were penetrated from the outer side of the housing etc., and can be set as the structure which the head of a volt | bolt does not protrude inside the housing etc.

  Locking portions 20a, 20b, and 20c are formed on the inner peripheral surface of the circular hole portion 10 that is located on the radially inner side of the fixing hole portions 21a, 21b, and 21c. Although the shape of the latching | locking part 20a is as the above-mentioned, 20b and 20c are also carrying out the same shape.

  In the present invention, the number of the locking portions is not limited to three. For example, it is good also as two places or four places or more. However, in order to make it difficult to separate the bearing 5 and the retainer plate 6, it is preferable to dispose the engaging portions at equal intervals in the circumferential direction and to provide three or more engaging portions. Further, the circumferential lengths of the plurality of locking portions may be different from each other, and the locking portions may be formed continuously and integrally over the entire circumference. When the locking portion is integrally formed continuously over the entire circumference, it is not necessary to form the protruding portion formed in the reduced diameter portion over the entire circumference. That is, in this case, it is sufficient to arrange two or more protrusions at substantially equal intervals in the circumferential direction.

  Further, neither the locking part nor the protrusion part may be formed over the entire circumference. For example, in a plan view, a large number of arcuate locking parts and protrusions are arranged with a gap in the circumferential direction, or a plurality of locking parts and protrusions having a long circumferential dimension are provided with a gap. Can be arranged. In addition, a substantially C-shaped locking portion or protrusion can be provided in plan view. For example, an arc-shaped locking portion or protrusion having a central angle larger than 180 ° in a plan view can be combined with a locking portion or protrusion formed over the entire circumference. Moreover, it can also be set as the combination of the circular arc-shaped latching | locking part whose central angle is larger than 270 degrees in planar view, and the circular arc-shaped projection part whose central angle is larger than 270 degrees in planar view.

  To summarize the above, in the present invention, the number of protrusions and locking portions, the length and position in the circumferential direction are such that the protrusions and the locking portions are in any relative angle between the outer ring and the retainer plate. It suffices if the opposing portions facing each other in the axial direction are configured to exist on both sides of any radial straight line of the bearing as a boundary.

  Next, a method of locking the retainer plate 6 and the bearing 5 will be described with reference to FIG. First, as shown to Fig.5 (a), the surface by the side of the base of the latching | locking part 20a of the retainer plate 6 and the surface by which the reduced diameter part 16 of the bearing 5 was formed are arrange | positioned.

  Next, the retainer plate 6 and the bearing 5 are moved in the axial direction so that the retainer plate 6 and the non-reduced diameter portion 19 of the bearing 5 approach each other. When the locking portion 20a hits the convex portion 17, a force that gradually deforms the locking portion 20a radially outward is applied by the inclination of the locking portion 20a, and the locking portion 20a is elastically deformed accordingly. After the locking portion 20a is completely deformed to the outside in the radial direction of the convex portion 17, the tip of the locking portion 20a slides on the outer peripheral surface of the convex portion 17, as shown in FIG. Further, the retainer plate 6 and the bearing 5 are moved in the axial direction so that the retainer plate 6 and the non-reduced diameter portion 19 approach each other.

  Then, as shown in FIG. 5C, the tip of the locking portion 20a passes over the convex portion 17, and the locking portion 20a returns to the state before elastic deformation. In this state, even if a force for separating the retainer plate 6 and the bearing 5 is applied, the tip of the locking portion 20a comes into contact with the convex portion 17 and resists it, so that it does not unintentionally come off. The same applies to the locking portions 20b and 20c. By locking the retainer plate 6 and the bearing 5 in this manner, it is possible to ensure good assemblability regardless of the rigidity (cross-sectional dimension) of the outer ring. Further, it is possible to prevent the parts from being damaged when the bearing unit is assembled. Furthermore, since it is not necessary to use a retaining ring for locking, the number of parts can be reduced and the cost can be reduced. As will be described later in the third embodiment, the locking portion may get over the convex portion 17 by plastic deformation.

  Next, the processing method of the latching | locking part 20a is demonstrated, referring FIG. As shown in FIG. 6A, a wedge-shaped jig 22 is applied to a portion slightly outside the inner peripheral surface of the portion that becomes the circular hole portion 10 of the plate material 23 that becomes the retainer plate 6, and the shaft A force is applied in the direction to press-fit, and the jig 22 is removed at an appropriate position. When the length from the base to the tip of the locking portion 20a is long, the tip is cut. Thereby, the latching | locking part 20a can be formed easily.

  Moreover, as shown in FIG.6 (b), the enlarged diameter part 25 is previously provided in the edge part of the internal peripheral surface of the part used as the circular hole 10 of the plate material 24 used as the retainer plate 6, and the enlarged diameter part side is provided. It is also possible to press-fit the wedge-shaped jig 22 into the portion where the diameter is not expanded. According to this, the amount of processing can be reduced as compared with the above method. The locking portions 20b and 20c can be processed in the same manner as the locking portion 20a.

(Second Embodiment)
FIG. 7 shows a retainer plate 27 according to the second embodiment of the present invention. The retainer plate 27 is provided with a recessed portion 26 adjacent to the locking portion 20d. Due to the indented portion 26, the locking portion 20d is easily deformed.

(Third embodiment)
Next, a bearing unit with a retainer plate according to a third embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the third embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion and the outer ring. Therefore, hereinafter, overlapping description is omitted, and the locking portion and the outer ring according to the third embodiment will be mainly described.

  Also in the third embodiment, locking portions 30a, 30b, 30c are formed in the circular hole portion 31 formed in the retainer plate 36 as in the first embodiment (not shown except for the locking portion 30a). The locking portions 30a, 30b, and 30c have the same configuration. FIG. 9A is an enlarged cross-sectional view in the vicinity of the locking portion 30a. The locking portion 30a extends from the inner peripheral surface of the circular hole portion 31 on the non-reduced-diameter portion 39 side in the axial direction to the convex portion 37 side with an inclination with respect to the axial direction. According to such a configuration, since the protrusion is at the end, the protrusion is easily positioned. The locking portion 30a can be processed using a wedge-shaped jig as in the first embodiment.

  The reduced diameter portion 34 integrally has an inclined portion 33 that gradually increases in diameter from the outer peripheral surface on the non-reduced diameter portion 39 side toward the non-reduced diameter portion 39. The reduced diameter portion 39 is also integrally formed. Thereby, since the wall thickness A from the outer ring rolling surface 35 to the reduced diameter portion 34 is increased, the outer ring strength is high and the outer ring is difficult to deform. The dimensions and angles of the inclined portion 33 are not limited to those shown in FIG. 9A, and can be variously changed according to the shape of the locking portion, the diameter of the circular hole portion 31, and the like.

  FIG. 9B shows the engagement allowance between the engaging portion 30 a and the convex portion 37 before and after the retainer plate 36 is assembled into the bearing 32. As shown in the upper figure of FIG. 9B, when the engagement allowance B with the outer ring at the plate projection is large in the state before assembling, the locking portion 30a is pressed by the convex portion 37 during assembling. Then, it is plastically deformed and incorporated into the outer ring 32. In this case, since plastic strain due to plastic deformation of the locking portion 30a remains, the engagement allowance C after incorporation is smaller than the engagement allowance before incorporation as shown in the lower diagram of FIG. As described in the first embodiment, the engagement allowance B before assembly can be reduced and the locking portion 30a can be deformed in the elastic deformation region, but the locking portion 30a is more convex when plastically deformed. Since the amount of return after exceeding the portion 37 increases, the engagement allowance can be secured stably.

  The retainer plate 36 and the outer ring 32 are both made of metal, but it is preferable that the metal rigidity of the retainer plate is lower than the metal rigidity of the outer ring 32. Moreover, it is preferable that the clearance groove part demonstrated in the following 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 30a.

(Fourth embodiment)
Next, a bearing unit with a retainer plate according to a fourth embodiment of the present application will be described with reference to FIGS. The bearing unit with a retainer plate according to the fourth embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion and the outer ring. Therefore, hereinafter, overlapping description is omitted, and the locking portion and the outer ring according to the fourth embodiment will be mainly described.

  Also in the fourth embodiment, locking portions 40a, 40b, and 40c are formed in circular holes formed in the retainer plate 46 as in the first embodiment (not shown except for the locking portion 40a), The locking portions 40a, 40b, and 40c have the same configuration. FIG. 10 is an enlarged cross-sectional view of the vicinity of the locking portion 40a. The locking part 40a extends from the vicinity of the center of the retainer plate 46 in the thickness direction to the convex part 47 side. Thereby, the processing amount of a plate can be decreased. The locking portion 40a can be processed using a wedge-shaped jig as in the first embodiment. The position of the locking portion 40a in the axial direction can be variously changed according to the size and shape of the convex portion 47 and the stepped portion 43.

  The retainer plate 46 may be incorporated into the outer ring 42 by elastically deforming the locking portion 40a, or may be incorporated into the outer ring 42 by plastically deforming the locking portion 40a as described above in the third embodiment. good. The retainer plate 46 and the outer ring 42 are both made of metal, but it is preferable that the metal rigidity of the retainer plate is lower than the metal rigidity of the outer ring 32.

  The reduced diameter portion 44 integrally has a step portion 43 having an outer diameter dimension substantially the same as the outer diameter size of the convex portion 47 on the non-reduced diameter portion 49 side in the axial direction. Is integrally formed with the non-reduced diameter portion 49. As a result, the thickness A between the outer ring rolling surface 45 and the surface of the reduced diameter portion 44 is increased, so that the outer ring strength is increased and the outer ring is less likely to be deformed. In addition, the dimension of the step part 43 is not restricted to what was described in FIG. 10, According to the shape of the latching | locking part 40a and the diameter of the circular hole part 41, it can change variously. Further, in the axial direction, the portion of the circular hole 41 on the non-reduced diameter portion 49 side from the base of the locking portion 40a forms a curved surface or a slope like a circular hole 81 according to an eighth embodiment described later. Also good.

  FIG. 11 shows an end portion in the circumferential direction of the locking portion 40a in which no escape groove portion is formed. (A) is a perspective view, (b) is a side view seen in the axial direction, and (c) is a cross-sectional view cut in the axial direction. As described above, the end of the locking portion 40 a may be in contact with an adjacent portion that forms the circular hole 41. However, in this case, since friction occurs at the contact portion, it is preferable that a clearance groove portion 48 is formed between the locking portion 40a and the adjacent portion as shown in FIG. Thereby, it is possible to prevent friction, and the locking portion 40a is more easily deformed when the retainer plate 46 is assembled into the outer ring 42.

(Fifth embodiment)
Next, a bearing unit with a retainer plate according to a fifth embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the fifth embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion and the outer ring. Therefore, hereinafter, overlapping description is omitted, and the locking portion and the outer ring according to the fifth embodiment will be mainly described.

  Also in the fifth embodiment, the locking portions 50a, 50b, and 50c are formed in the circular hole portion 51 formed in the retainer plate 56 as in the first embodiment (the portions other than the locking portion 50a are not shown). The locking portions 50a, 50b, and 50c have the same configuration. FIG. 13A is an enlarged cross-sectional view in the vicinity of the locking portion 50a. The locking portion 50a extends from the inner peripheral surface of the circular hole portion 51 on the non-diametered portion 59 side in the axial direction toward the convex portion 57, and has a curved surface shape that protrudes radially outward of the bearing. I am doing. Thereby, the latching | locking part 50a becomes a thing which deform | transforms more easily when incorporating the retainer plate 56 in the outer ring | wheel 52. FIG. The position of the locking portion 50a in the axial direction can be variously changed according to the size and shape of the convex portion 57 and the stepped portion 53.

  The retainer plate 56 may be incorporated into the outer ring 52 by elastically deforming the locking part 50a, or may be incorporated into the outer ring 52 by plastically deforming the locking part 40a as described above in the third embodiment. good. The retainer plate 56 and the outer ring 52 are both made of metal, but it is preferable that the metal rigidity of the retainer plate 56 is lower than the metal rigidity of the outer ring 52. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 50a.

  The reduced diameter portion 54 has an outer diameter larger than the convex portion 57 on the non-reduced diameter portion 59 side in the axial direction, and a stepped portion 53 having a portion facing the locking portion 50a as an inclined surface is integrated over the entire circumference. Have. The step portion 53 is also formed integrally with the non-diametered portion 59. Thus, by increasing the thickness A from the outer ring rolling surface 55 to the surface of the reduced diameter portion 54 while preventing interference with the locking portion 50a, the outer ring strength is increased and the outer ring is difficult to deform. In addition, the dimension of the step part 53 is not restricted to this, It can change variously according to the shape of the latching | locking part 50a, and the diameter of the circular hole part 51. FIG.

  FIG.13 (b) has shown the processing method of the latching | locking part 50a. The locking portion 50a can be processed using a pair of jigs 58a and 58b. In the jigs 58a and 58b, the portion that presses the portion to be the locking portion 50a forms a curved surface so that the locking portion 50a has the curved shape described above. The processing of the locking portion 50a can be easily performed by placing a plate material to be the retainer plate 56 on the jig 58b and press-fitting the jig 58a as shown in FIG. 13 (b).

(Sixth embodiment)
Next, a bearing unit with a retainer plate according to a sixth embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the sixth embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion. Therefore, the overlapping description will be omitted below, and the locking portion according to the sixth embodiment will be mainly described.

  Also in the sixth embodiment, locking portions 60a, 60b and 60c are formed in the circular hole portion 61 formed in the retainer plate 66 as in the first embodiment (other than the locking portion 60a is not shown). The locking portions 60a, 60b, and 60c have the same configuration. FIG. 14 is an enlarged cross-sectional view of the vicinity of the locking portion 60a. The locking part 60 a extends from the inner peripheral surface of the circular hole 61 on the non-diametered part 69 side toward the convex part 67 in the axial direction. The locking part 60a has a curved surface with its base side convex toward the outer side in the radial direction of the bearing, its central part has a curved surface convex toward the inner side in the radial direction of the bearing, and its tip side is linear. It extends to. As a result, the locking portion 60 a is easily deformed when the retainer plate 66 is incorporated into the outer ring 62. The locking part 60a can be processed by a pair of jigs having a curved surface, as in the fifth embodiment. The position of the locking portion 60a in the axial direction can be variously changed according to the position and size of the convex portion 67.

  The retainer plate 66 may be incorporated into the outer ring 62 by elastically deforming the locking portion 60a, or may be incorporated into the outer ring 62 by plastically deforming the locking portion 60a as described above in the third embodiment. good. The retainer plate 66 and the outer ring 62 are both made of metal, but it is preferable that the metal rigidity of the retainer plate 66 is lower than the metal rigidity of the outer ring 62. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 60a. It should be noted that the portion of the circular hole 61 on the non-diameter-reduced portion 69 side from the base of the locking portion 60a in the axial direction may form a curved surface or a slope like a circular hole portion 81 according to an eighth embodiment described later. good.

(Seventh embodiment)
Next, a bearing unit with a retainer plate according to a seventh embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the seventh embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion. Therefore, hereinafter, the overlapping description is omitted, and the locking portion according to the seventh embodiment will be mainly described.

  Also in the seventh embodiment, the locking portions 70a, 70b, and 70c are formed in the circular hole portion 71 formed in the retainer plate 76 as in the first embodiment (the portions other than the locking portion 70a are not shown). The locking portions 70a, 70b, and 70c have the same configuration. FIG. 15 is an enlarged cross-sectional view of the vicinity of the locking portion 70a. The locking portion 70 a extends from the inner peripheral surface of the circular hole portion 71 on the non-diameter-reduced portion 79 side toward the convex portion 77 in the axial direction. In the locking portion 70a, the outer circumferential surface of the bearing extends linearly toward the convex portion 77, whereas the circumferential inner surface of the bearing has a curved surface convex outward in the circumferential direction. Forming. As a result, the locking portion 70 a is easily deformed when the retainer plate 76 is incorporated into the outer ring 72. The locking portion 70a can be processed with a pair of jigs, as in the fifth embodiment. The position of the locking portion 70a in the axial direction can be variously changed according to the position and size of the convex portion 77.

  The retainer plate 76 may be incorporated into the outer ring 72 by elastically deforming the engaging portion 70a, or may be incorporated into the outer ring 72 by plastically deforming the engaging portion 70a as described above in the third embodiment. good. The retainer plate 76 and the outer ring 72 are both made of metal, but it is preferable that the metal rigidity of the retainer plate 76 is lower than the metal rigidity of the outer ring 72. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 70a. The portion of the circular hole 71 on the non-diameter-reduced portion 79 side from the base of the locking portion 70a in the axial direction may form a curved surface or a slope like a circular hole 81 according to an eighth embodiment described later. good.

(Eighth embodiment)
Next, a bearing unit with a retainer plate according to an eighth embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the eighth embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion. Therefore, hereinafter, overlapping description is omitted, and the locking portion according to the eighth embodiment will be mainly described.

  Also in the eighth embodiment, the locking portions 80a, 80b, and 80c are formed in the circular hole portion 81 formed in the retainer plate 86 as in the first embodiment (other than the locking portion 80a is not shown). The locking portions 80a, 80b, and 80c have the same configuration. FIG. 16A is an enlarged cross-sectional view of the vicinity of the locking portion 80a. The locking portion 80a extends from the inner peripheral surface of the circular hole portion 81 on the non-reduced diameter portion 89 side to the convex portion 87 side in the axial direction. As in the fifth embodiment, the locking portion 80a has a curved surface that is convex toward the radially outer side of the bearing. Accordingly, the locking portion 80a is more easily deformed when the retainer plate 86 is incorporated into the outer ring 82.

  The portion of the circular hole 81 on the non-reduced diameter portion 89 side from the base of the locking portion 80a in the axial direction forms a curved surface portion 85 that protrudes toward the non-reduced diameter portion 89, and is located on the radially inner side of the bearing. An S-shaped cross section is formed continuously with the surface of the locking portion 80a. The position of the locking portion 80a in the axial direction can be variously changed according to the position and size of the convex portion 87. Further, the curvature of the curved surface portion 85 can be changed accordingly. Instead of the curved surface portion 85, a planar inclined surface may be formed with a curvature of zero.

  FIG. 16B shows a method for processing the locking portion 80 a and the curved surface portion 85. The locking portion 80a can be processed using a pair of jigs 88a and 88b. In the jigs 88a and 88b, in order to form the locking portion 80a and the curved surface portion 85, portions that press the portions that become the locking portion 80a and the curved surface portion 85 form curved surfaces. The locking portion 80a can be easily processed by placing a plate material to be the retainer plate 86 on the jig 88b and press-fitting the jig 88a as shown in FIG.

  The retainer plate 86 may be incorporated into the outer ring 82 by elastically deforming the engaging portion 80a, or may be incorporated into the outer ring 82 by plastically deforming the engaging portion 80a as described above in the third embodiment. . The retainer plate 86 and the outer ring 82 are both made of metal, but it is preferable that the metal rigidity of the retainer plate 86 is lower than the metal rigidity of the outer ring 82. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 80a.

(Ninth embodiment)
Next, a bearing unit with a retainer plate according to a ninth embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the ninth embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion. Therefore, the overlapping description will be omitted below, and the locking portion according to the ninth embodiment will be mainly described.

  Also in the ninth embodiment, locking portions 90a, 90b, and 90c are formed in the circular hole portion 91 formed in the retainer plate 86 as in the first embodiment (the locking portion 90a is not shown). The locking portions 90a, 90b, and 90c have the same configuration. FIG. 17 is an enlarged cross-sectional view of the vicinity of the locking portion 90a. The locking part 90a extends inward in the radial direction of the bearing from the inner peripheral surface of the end of the circular hole 91 on the non-reduced diameter part 99 side in the axial direction. The locking portion 90 a has a convex curved surface toward the non-reduced diameter portion 99. As a result, the locking portion 90 a is more easily deformed when the retainer plate 96 is assembled into the outer ring 92. The locking portion 90a can be processed using a jig having a convex curved surface formed in the opposite direction to that of the fifth embodiment.

  The retainer plate 96 may be incorporated into the outer ring 92 by elastically deforming the locking portion 90a, or may be incorporated into the outer ring 82 by plastically deforming the locking portion 80a as described above in the third embodiment. good. Although both the retainer plate 96 and the outer ring 92 are made of metal, it is preferable that the metal rigidity of the retainer plate 96 is lower than the metal rigidity of the outer ring 92. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 90a.

(10th Embodiment)
Next, a bearing unit with a retainer plate according to a tenth embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the tenth embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion. Therefore, hereinafter, overlapping description is omitted, and the locking portion according to the eighth embodiment will be mainly described.

  Also in the tenth embodiment, the locking portions 100a, 100b, and 100c are formed in the circular hole portion 101 formed in the retainer plate 106 as in the first embodiment (not shown except for the locking portion 100a). The locking portions 100a, 100b, and 100c have the same configuration. FIG. 18A is an enlarged cross-sectional view of the vicinity of the locking portion 100a. The locking part 100a extends from the inner peripheral surface of the circular hole part 101 on the non-reduced diameter part 109 side to the convex part 107 side in the axial direction. A groove portion 105 is formed on the outer side in the radial direction of the locking portion 100a so that it does not interfere with other portions of the circular hole portion 101 even if the locking portion 100a is deformed. The position of the locking portion 100a in the axial direction can be variously changed according to the position and size of the convex portion 107.

  The retainer plate 106 may be incorporated into the outer ring 102 by elastically deforming the engaging part 100a, or may be incorporated into the outer ring 102 by plastically deforming the engaging part 100a as described above in the third embodiment. good. The retainer plate 106 and the outer ring 102 are both made of metal, but it is preferable that the metal rigidity of the retainer plate 106 is lower than the metal rigidity of the outer ring 102. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 100a. The portion of the circular hole portion 101 on the non-reduced diameter portion 109 side from the base of the locking portion 100a in the axial direction may form a curved surface or a slope like the circular hole portion 81 according to the above-described eighth embodiment. good.

  FIG. 18B shows a method for processing the locking portion 100 a and the groove portion 105. The locking part 100a and the groove part 105 can be processed using a pair of jigs 108a and 108b. The jig 108a has a wedge shape, and the jig 108b has a shape corresponding to the shapes of the locking portion 100a and the circular hole portion 101 on the non-contact portion 109 side. As shown in FIG. 18 (b), the locking portion 100 a is processed by installing a plate material to be the retainer plate 106 on the jig 108 b and placing the jig 108 a on the non-contact portion 109 side from the radially inner side of the portion to be the circular hole 101. This can be easily done by inclining and press-fitting.

(Eleventh embodiment)
Next, a bearing unit with a retainer plate according to an eleventh embodiment of the present application will be described with reference to FIG. The bearing unit with a retainer plate according to the eleventh embodiment is common to the bearing unit with a retainer plate according to the first embodiment in the configuration other than the locking portion. Therefore, the overlapping description will be omitted below, and the locking portion according to the eleventh embodiment will be mainly described.

  Also in the eleventh embodiment, the locking portions 110a, 110b, and 110c are formed in the circular hole portion 111 formed in the retainer plate 116 as in the first embodiment (other than the locking portion 110a is not shown). The locking portions 110a, 110b, and 110c have the same configuration. FIG. 19 is an enlarged cross-sectional view of the vicinity of the locking portion 110a. The locking portion 110a extends from the inner peripheral surface of the circular hole portion 111 on the non-reduced diameter portion 119 side toward the convex portion 117 in the axial direction. In addition, a groove 115 is formed in the circular hole 111 on the non-reduced diameter portion 119 side at the base of the locking portion 110a. As a result, the locking portion 110 a is easily deformed when the retainer plate 116 is assembled into the outer ring 112. The locking part 110a can be performed by press-fitting a wedge-shaped jig as in the first embodiment. The position of the locking portion 110a in the axial direction can be variously changed in accordance with the position and size of the convex portion 117.

  The retainer plate 116 may be incorporated into the outer ring 112 by elastically deforming the engaging part 110a, or may be incorporated into the outer ring 112 by plastically deforming the engaging part 110a as described above in the third embodiment. good. The retainer plate 116 and the outer ring 112 are both made of metal, but it is preferable that the metal rigidity of the retainer plate 116 is lower than the metal rigidity of the outer ring 112. Moreover, it is preferable that the clearance groove part mentioned above in 4th Embodiment is formed in the both ends of the circumferential direction of the latching | locking part 110a. In the axial direction, the portion of the circular hole 111 closer to the non-diametered portion 119 than the groove 115 may form a curved surface or an inclined surface like the circular hole 81 according to the eighth embodiment described above.

  In the present invention, all combinations of the locking portions according to the first to eleventh embodiments and the outer rings according to the first, third to fifth embodiments are possible. For example, the outer ring according to the first embodiment can be applied to the third embodiment. In this case, the outer ring shape according to the first embodiment has an advantage that it is easy to process with few steps. Moreover, it can also apply combining the latching | locking part which concerns on each embodiment.

  As described above, according to the present invention, it is possible to provide a bearing unit with a retainer plate that can improve the efficiency of assembly work and improve productivity, and prevent damage to parts in the assembly work. I can do it.

1 Protrusion 2, 7, 32, 42, 52, 62, 72, 82, 92, 102, 112 Outer ring 3 Ball 4 Bearing unit with retainer plate 5 Bearing 6, 27, 36, 46, 56, 66, 76, 86 96, 106, 116 Retainer plate 8 Inner ring 9 Balls 10, 31, 41, 51, 61, 71, 81, 91, 101, 111 Circular holes 11a, 11b Seals 12a, 12b Seal sliding groove 13 Ball cage 14 35, 45, 55, 65, 75, 85, 95, 105, 115 Outer rolling surface 15a, 15b Seal mounting groove 16, 34, 44, 54, 64, 74, 84, 94, 104, 114 Reduced diameter portion 17, 37, 47, 57, 67, 87, 97, 107, 117 Convex part 18 Inner rolling surface 19, 39, 49, 59, 69, 79, 89, 99, 1 9, 119 Non-reduced portions 20a, 20b, 20c, 20d, 30a, 40a, 50a, 60a, 70a, 80a, 90a, 100a, 110a Locking portions 21a, 21b, 21c Fixing holes 22, 58a, 58b, 88a, 88b, 108a, 108b Jig 23, 24 Plate material 25 Expanded portion 26 Recessed portion 33 Inclined portion 43, 53 Stepped portion 48 Relief groove portion 85 Curved surface portion 105, 115 Groove portion A Thickness B, C

Claims (6)

A bearing provided with an outer ring having a reduced diameter portion formed at an end portion of the outer peripheral portion and a non-reduced diameter portion having a larger diameter than the reduced diameter portion on the outer peripheral portion;
A retainer plate having a circular hole portion larger than the outer diameter of the reduced diameter portion,
In the bearing unit with a retainer plate in which the circular hole portion and the reduced diameter portion are fitted,
On the outer peripheral portion of the reduced diameter portion, there is a protrusion protruding outward in the radial direction,
In the inner peripheral surface of the circular hole portion, having a locking portion having an inner diameter smaller than the outer diameter of the protruding portion,
When the force which separates the said bearing and the said retainer plate is added, the said latching | locking part and the said protrusion part contact | abut, It is comprised so that the said bearing and the said retainer plate may not isolate | separate. Bearing unit with retainer plate,
The locking portion provided on the inner peripheral surface of the circular hole portion of the retainer plate is mounted over the protrusion from an end portion of the outer ring on the side where the protrusion is provided in the rotation axis direction. The retainer plate and the bearing are combined together, and the amount of deformation of the locking portion when the protrusion is carried over is larger than the amount of deformation of the outer ring. unit.   2. The retainer plate according to claim 1, wherein the locking portion extends from the non-reduced-diameter portion side to the projection portion side while being inclined with respect to the rotation axis direction of the bearing. Bearing unit.   The locking portion has a tip portion located on the non-diameter-reduced portion side with respect to the projection portion in the rotation axis direction of the bearing and on an inner side with respect to the outer peripheral surface of the projection portion in the radial direction of the bearing. The bearing unit with a retainer plate according to claim 2, wherein the bearing unit has a retainer plate.   The bearing unit with a retainer plate according to any one of claims 1 to 3, wherein the protrusion extends in the circumferential direction over the entire circumference.   The bearing unit with a retainer plate according to any one of claims 1 to 4, wherein the locking portions are provided at two or more locations in the circumferential direction.   The bearing unit with a retainer plate according to any one of claims 1 to 4, wherein the locking portion extends in a circumferential direction over the entire circumference.

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