JP2011185364A - Bearing ring for roller bearing, roller bearing, and roller bearing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing ring for a roller bearing, the roller bearing, and a roller bearing device, which have a shape machined from a metal plate, support loads from rolling elements by greater bearing power, are less likely to be deformed when pressure-fitted, and further enlarge a contact area with a counterpart member for pressure-fitting. <P>SOLUTION: This bearing ring 10n for the rolling bearing is arranged on the inner peripheral side of a plurality of rolling elements annularly arranged, machined from the metal plate, and formed with an inner peripheral raceway surface Mn for the rolling elements. In the bearing ring 10n, an axial cross-sectional surface cut in an axial direction is formed into a substantially U-shape with one axial side opened, and includes a cylindrical inside diameter surface portion 12 having a small diameter, a cylindrical outside diameter surface portion 11 having larger diameter than that of the inside diameter surface portion, and an end surface portion 13 connecting the inside diameter surface portion to the outside diameter surface portion on the other axial side and also perpendicular to the axial direction. The outside diameter surface portion is formed with an annular recessed portion functioning as the inner peripheral raceway surface Mn, and a side opposite to the end surface portion is so configured that the outside diameter surface portion is axially projected in comparison with the inside diameter surface portion. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is used as a bearing ring of a rolling bearing having a plurality of rolling elements between an inner ring and an outer ring, and is formed by processing a metal plate. The present invention relates to a rolling bearing provided, and a rolling bearing device including the rolling bearing, a shaft member, and a housing.

In general, an inner ring which is a bearing ring of a so-called deep groove ball bearing (a rolling bearing in which a plurality of steel balls are accommodated between a groove (track) formed in the inner ring and a groove (track) formed in the outer ring) and The outer ring is formed by performing processing such as forging, grinding, and cutting from a metal bar.
However, in this forming method, since the race is formed by cutting from a metal bar, the processing cost is high and the weight is large.
Therefore, in order to realize a bearing ring that is lower in cost and lighter in weight, various rolling bearings having a bearing ring formed from a metal plate by pressing or the like have been proposed.
For example, in the prior art described in Patent Document 1, as shown in FIG. 6, a rolling bearing 110 including an inner ring 100N and an outer ring 100G formed from a metal plate by press working or the like is disclosed.

JP-A-9-144663

An inner ring 100N (see FIG. 6) of a conventional rolling bearing 110 formed of a metal plate described in Patent Document 1 is formed on the inner circumferential side raceway surface 102N by a support portion 103N on the back side of the inner circumferential side raceway surface 102N. Although the supporting force in the radial direction is reinforced, the portion of the shoulder portion 101N is not supported in the radial direction, so that the inner ring 100N can be deformed without fully supporting the load from the rolling element T, and the rolling element can fall off. There is sex. Similarly, the outer ring 100G (see FIG. 6) is not supported in the radial direction at the portion of the shoulder 101G, and therefore, the load from the rolling element T cannot be supported and the rolling element may fall off. .
In order to reinforce the supporting force of the radial load, the inner ring N having the shape shown in FIG. 7A (the cross section is a U-shape and the opening direction is inside), and the outer ring having the shape shown in FIG. G (the cross section is U-shaped and the opening direction is outside) is conceivable. The inner ring N is supported in the radial direction by the shoulder N13 and the shoulder N14, and can sufficiently support the load from the rolling element T. Similarly, the outer ring G is supported in the radial direction by the shoulder G13 and the shoulder G14, and can sufficiently support the load from the rolling element T.
However, the inner ring N shown in FIG. 7A, the outer ring G shown in FIG. 7B, the rolling element T, and the cage HT constitute a rolling bearing, and as shown in FIG. If it press-fits between the housing H, the shoulder N13 and the shoulder N14 of the inner ring and the shoulder G13 and the shoulder G14 of the outer ring G may be deformed and inclined as shown by dotted lines. If the shoulders N13 and N14 and the shoulders G13 and G14 are deformed and tilted, the desired support force cannot be obtained, and a springback occurs and returns to the side opposite to the press-fitting direction. An error in the axial position of the rolling bearing increases, which is not preferable.
Further, the rolling bearing shown in FIGS. 7A to 7C has an inner ring even when the shoulder portions N13 and N14 and the shoulder portions G13 and G14 are not deformed by being press-fitted between the shaft member J and the housing H. Since the area where N and the shaft member J are in contact and the area where the outer ring G and the housing H are in contact are very small, a so-called “bearing creep phenomenon” may occur.

  The present invention has been made in view of the above points, has a shape that can be formed by processing from a metal plate, and supports a load from a rolling element with a greater support force. It is an object of the present invention to provide a rolling bearing bearing ring, a rolling bearing, and a rolling bearing device that are capable of being deformed and that are not easily deformed during press-fitting and that can increase the contact area with a press-fitting counterpart member. .

In order to solve the above-described problems, a rolling bearing race, a rolling bearing, and a rolling bearing device according to the present invention take the following means.
First, the first invention of the present invention has an annular shape that is disposed on the inner peripheral side of a plurality of rolling elements arranged in an annular shape, and is processed from a metal plate to form an inner peripheral raceway surface of the rolling element. It is a bearing ring for rolling bearings.
The bearing ring for rolling bearing has an axial cross section cut along the axial direction, and is substantially U-shaped with an opening on one side in the axial direction, and has a small diameter cylindrical inner diameter surface portion and a larger diameter than the inner diameter surface portion. A cylindrical outer diameter surface portion, and the inner diameter surface portion and the outer diameter surface portion are connected to the other side in the axial direction, and the end surface portion is orthogonal to the axial direction, and the outer diameter surface portion In this case, a concave portion serving as the inner circumferential raceway surface is formed in an annular shape.
And the side opposite to the said end surface part in an axial direction is a bearing ring for rolling bearings formed so that the said outer diameter surface part may protrude in an axial direction rather than the said inner diameter surface part.

According to the first aspect of the invention, the rolling bearing race can be formed by processing from the metal plate.
Further, if this rolling bearing race is used as an inner ring to form a rolling bearing and is used as shown in the example of FIG. 3A, it is possible to support the load from the rolling element with a larger support force. In addition to being able to be deformed during press-fitting, the contact area with the press-fitting counterpart member (shaft member J in the example of FIG. 3A) can be increased, and the creep phenomenon of the bearing can be further reduced. .

Next, the second invention of the present invention is arranged on the outer peripheral side of a plurality of rolling elements arranged in an annular shape, and has an annular shape that is processed from a metal plate to form the outer peripheral raceway surface of the rolling element. This is a bearing ring for rolling bearings.
The bearing ring for rolling bearing has an axial cross section cut along the axial direction, and is substantially U-shaped with an opening on one side in the axial direction, and has a small diameter cylindrical inner diameter surface portion and a larger diameter than the inner diameter surface portion. A cylindrical outer diameter surface portion, and the inner diameter surface portion and the outer diameter surface portion are connected to each other on the other side in the axial direction and are orthogonal to the axial direction. Has an annular recess that serves as the outer raceway surface.
And the side opposite to the said end surface part in an axial direction is a bearing ring for rolling bearings formed so that the said internal diameter surface part may protrude in an axial direction rather than the said outer diameter surface part.

According to the second aspect of the invention, the rolling bearing race can be formed by processing from the metal plate.
Further, if this rolling bearing race is used as an outer ring to form a rolling bearing and is used as shown in the example of FIG. 3B, it is possible to support the load from the rolling element with a larger supporting force. In addition to being able to be deformed during press-fitting, the contact area with the press-fitting counterpart member (housing H in the example of FIG. 3B) can be increased, and the creeping phenomenon of the bearing can be further reduced.

  Next, a third invention of the present invention is a rolling bearing race according to the first invention, and an opposing race which is disposed on the outer peripheral side of the rolling bearing race and faces the inner race surface. A rolling bearing comprising: an outer peripheral race having a surface; and a plurality of rolling elements that are accommodated between the inner race side raceway and the opposing raceway and are capable of rolling.

  According to the third aspect of the invention, the shape can be formed by processing from a metal plate, and the load from the rolling element can be supported with a larger support force, and at the time of press-fitting. Therefore, it is possible to realize a rolling bearing provided with a bearing ring for a rolling bearing as an inner ring that is not easily deformed and can have a larger contact area with a press-fitting counterpart member.

  Next, a fourth aspect of the present invention is a rolling bearing race according to the second aspect of the present invention, and an opposing race that is disposed on the inner peripheral side of the rolling bearing race and faces the outer peripheral raceway surface. A rolling bearing comprising: an inner peripheral race having a surface; and a plurality of rolling elements that are accommodated between the outer peripheral race surface and the opposing raceway and are capable of rolling.

  According to the fourth aspect of the invention, the shape can be formed by processing from a metal plate, and the load from the rolling element can be supported with a larger support force, and at the time of press-fitting. Therefore, it is possible to realize a rolling bearing provided with a bearing ring for a rolling bearing as an outer ring that is not easily deformed and can have a larger contact area with a press-fitting counterpart member.

Next, according to a fifth aspect of the present invention, there is provided the rolling bearing according to the third aspect, a housing, and a shaft member that is accommodated in the housing and is rotatable relative to the housing around a rotation axis. And a rolling bearing device.
The diameter of the inner peripheral surface of the housing has a diameter corresponding to the outer diameter of the outer raceway ring, and the outer peripheral side of the shaft member is located on the inner peripheral side of the outer diameter surface portion of the rolling bearing raceway ring. A large-diameter peripheral surface having a diameter corresponding to the diameter, a small-diameter peripheral surface having a diameter corresponding to the inner peripheral-side diameter of the inner diameter surface portion of the rolling bearing race, and the large-diameter peripheral surface and the small-diameter in the axial direction. And an axial end surface perpendicular to the axial direction between the peripheral surface and the peripheral surface.
The rolling bearing has an inner periphery of the outer diameter surface portion so that an outer peripheral portion of the outer peripheral race is in radial contact with an inner peripheral surface of the housing and a large diameter peripheral surface of the shaft member. The inner diameter surface portion so that the surface abuts in the radial direction, the inner circumferential surface of the inner diameter surface portion abuts in the radial direction on the small diameter circumferential surface of the shaft member, and the shaft end surface of the shaft member. This is a rolling bearing device that is fitted so that the end on the opposite side to the end face in is abutted in the axial direction.

  According to the fifth aspect of the present invention, as shown in FIG. 3A, a rolling bearing raceway ring 10n configured as an inner ring is connected to a large-diameter circumferential surface JML, a small-diameter circumferential surface JMS, a shaft end surface JMT of the shaft member J. It is possible to press-fit so as to properly contact each of the above. The bearing ring 10n for the rolling bearing can support the load from the rolling element T with a larger support force, and is not easily deformed during press-fitting, and is a press-fitting counterpart member (in this case, a shaft member). The contact area with J) can be further increased.

Next, a sixth invention of the present invention is a rolling bearing according to the fourth invention, a housing, and a shaft member that is housed in the housing and is rotatable relative to the housing around a rotation shaft. And a rolling bearing device.
The diameter of the outer peripheral surface of the shaft member has a diameter corresponding to the inner diameter of the inner peripheral raceway, and the inner peripheral side of the housing is the outer diameter of the inner peripheral surface portion of the rolling bearing raceway. A small-diameter circumferential surface having a corresponding diameter, a large-diameter circumferential surface having a diameter corresponding to a diameter on the outer peripheral side of the outer-diameter surface portion of the rolling bearing race, and the large-diameter circumferential surface and the small-diameter circumferential surface in the axial direction. And a housing end surface orthogonal to the axial direction between the two.
In the rolling bearing, the outer peripheral surface of the inner peripheral surface ring is in contact with the outer peripheral surface of the shaft member in the radial direction, and the outer peripheral surface of the inner peripheral surface portion is on the small-diameter peripheral surface of the housing. The outer diameter surface portion of the outer diameter surface portion is in contact with the outer diameter surface portion of the housing so that the outer peripheral surface of the outer diameter surface portion is in contact with the large diameter peripheral surface of the housing in the radial direction. It is a rolling bearing device that is fitted so that the end opposite to the end face is in axial contact.

  According to the sixth aspect of the invention, as shown in FIG. 3B, a rolling bearing raceway ring 10g configured as an outer ring is connected to a large-diameter peripheral surface HML, a small-diameter peripheral surface HMS, a housing end surface HMT, It is possible to press-fit so that each of them is in proper contact. The rolling bearing raceway ring 10g can support the load from the rolling element T with a larger support force, and is not easily deformed during press-fitting, so that the press-fitting counterpart member (in this case, the housing H ) Can be made larger.

It is a figure explaining the example (A) of the external appearance shape and cross-sectional shape of the bearing ring 10n (inner ring) of the present invention, and the external shape and cross-sectional shape of the bearing ring 10g (outer ring) of the present invention. is there. It is a figure explaining the example of the manufacturing process of the bearing ring 10n for rolling bearings. FIG. 2A illustrates a state where the rolling bearing 10 using the rolling bearing race 10n as an inner ring is press-fitted into the shaft member J, and the rolling bearing 10 using the rolling bearing race 10g as an outer ring is press-fitted into the housing H. It is a figure (B) explaining the state which carried out. FIG. 7A illustrates a state in which a rolling bearing using the rolling bearing race 10n as an inner ring and the rolling bearing race 10g as an outer ring is press-fitted into the shaft member J and the housing H, and an example using the spacer SP. It is a figure (B) to explain. It is a figure explaining the example of the shape of the shaft member J and the spacer SP. It is sectional drawing of the rolling bearing 110 provided with the conventional bearing ring (inner ring 100N, outer ring 100G) processed from the metal plate. It is a figure explaining the other example of the conventional track ring processed from the metal plate.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. FIG. 1A shows an example of the external shape and cross-sectional shape of a rolling bearing race 10n (inner ring) of the present invention, and FIG. 1B shows the external shape of a rolling bearing race 10g (outer ring) of the present invention. An example of the cross-sectional shape is shown.

● [Rolling bearing rings 10n, 10g structure (Fig. 1)]
First, the structure (shape) of a rolling bearing race 10n used as an inner ring will be described with reference to FIG.
As shown in FIG. 1 (A), the rolling bearing raceway ring 10n has a shape that can be machined from a metal plate by pressing or the like, and has an inner circumferential raceway surface Mn serving as an inner circumferential raceway of the rolling element. It has an annular shape formed in an annular shape.
The rolling bearing race 10n has an axial cross section (right view in FIG. 1A) cut along the axial direction (the direction of the rotation axis ZS), and is substantially U-shaped with one side opened in the axial direction. It has a shape. The rolling bearing race 10n includes an inner diameter surface portion 12 having a small diameter cylindrical shape, an outer diameter surface portion 11 having a larger diameter than the inner diameter surface portion 12, and an inner diameter surface portion 12 and the outer diameter surface portion 11 in the axial direction. It is comprised by the end surface part 13 which is a surface connected on the other side (opposite side to an opening side), and is a surface orthogonal to an axial direction.
In addition, a concave portion (groove) serving as the inner peripheral raceway surface Mn is formed in an annular shape on the outer peripheral surface of the outer diameter surface portion 11.
The side opposite to the end surface portion 13 in the axial direction is formed such that the outer diameter surface portion 11 protrudes in the axial direction rather than the inner diameter surface portion 12 (the length (width) in the axial direction is the outer diameter surface portion 11). Is longer than the inner diameter surface portion 12).

Next, the structure (shape) of the rolling bearing race 10g used as an outer ring will be described with reference to FIG.
As shown in FIG. 1B, the rolling bearing raceway ring 10g has a shape that can be machined from a metal plate by pressing or the like, and the outer circumferential raceway surface Mg that becomes the outer circumferential raceway of the rolling element is annular. It has a formed annular shape.
The rolling bearing race 10g has an approximately U-shaped cross section (right diagram in FIG. 1B) cut along the axial direction (the direction of the rotation axis ZS), with one side in the axial direction opened. It has a shape. The rolling bearing race 10g includes an inner diameter surface portion 12 having a small diameter cylindrical shape, an outer diameter surface portion 11 having a larger diameter than the inner diameter surface portion 12, and an inner diameter surface portion 12 and the outer diameter surface portion 11 in the axial direction. It is comprised by the end surface part 13 which is a surface connected on the other side (opposite side to an opening side), and is a surface orthogonal to an axial direction.
In addition, a concave portion (groove) serving as the outer peripheral raceway surface Mg is formed in an annular shape on the inner peripheral surface of the inner diameter surface portion 12.
The side opposite to the end surface portion 13 in the axial direction is formed so that the inner diameter surface portion 12 protrudes in the axial direction rather than the outer diameter surface portion 11 (the length (width) in the axial direction is the same as that of the inner diameter surface portion 12). Is longer than the outer diameter surface portion 11).

● [Example of machining process of rolling bearing raceway 10n (Fig. 2)]
Next, an example of a machining process for forming the rolling bearing race 10n from the metal plate P will be described with reference to FIG.
In addition, as a material of the metal plate P, various materials used in press working or the like such as S75CM carbon steel can be used.
First, from the metal plate P shown in FIG. 2 (A), one end face is opened as shown in FIG. 2 (B) by drawing or pressing, etc. (the bottom face 11K is opened in FIG. 2 (B)). Processed into a cylindrical shape. The outer peripheral surface in this state corresponds to the outer diameter surface portion 11.
Next, as shown in FIG. 2C, the upper surface that is not opened is opened by pressing or the like, and the inner cylindrical surface is extended downward. The extended cylindrical surface corresponds to the inner diameter surface portion 12. The upper surface portion left at the opening corresponds to the end surface portion 13.
Then, as shown in FIG. 2D, a concave portion (groove) of the inner peripheral side raceway surface Mn is formed in an annular shape on the outer peripheral surface.
Thus, it is possible to easily form the rolling bearing race 10n from the metal plate P. In addition, since the machining process of the rolling bearing race 10g which is an outer ring is the same, the description of the machining process of the rolling bearing race 10g will be omitted.
In addition, after finishing the shape, heat treatment such as quenching, tempering or annealing is performed.

● [A state in which a rolling bearing is fitted between the shaft member J and the housing H (FIGS. 3 and 4)]
Next, using FIG. 3A (axial sectional view), rolling is performed so as to support the shaft member J (accommodated in the housing H) that rotates relative to the housing H around the rotation axis ZS. A state in which the bearing 10 is fitted will be described.
The state shown in FIG. 3A shows an example of a state in which the rolling bearing 10 is press-fitted into the shaft member J, and the rolling bearing 10 is inserted into the housing H without being press-fitted.
In this case, the rolling bearing 10 includes a rolling bearing race 10n (see FIG. 1A) that is an inner race, an outer race G (corresponding to an outer race), and a plurality of rolling elements T (steel balls, etc.). I have. In addition, each rolling element T is held at a predetermined interval by a holder HT.
The outer ring G is disposed on the outer peripheral side of the rolling bearing race 10n and has an opposing raceway surface facing the inner raceway surface Mn. The rolling element T is accommodated between the inner circumferential raceway surface Mn and the opposing raceway surface and can roll. The inner ring to be press-fitted uses the rolling bearing raceway ring 10n described in the present embodiment, but any outer ring that is not press-fitted may be used. As an example, the outer ring G shown in FIG. Will be described.

In this case, the diameter of the inner peripheral surface HM of the housing H is a diameter corresponding to the outer diameter of the outer ring G, and may be a diameter that can be inserted without press-fitting the outer ring G.
The outer peripheral side of the shaft member J includes a large-diameter peripheral surface JML that is an outer peripheral surface having a large diameter, a small-diameter peripheral surface JMS that is an outer peripheral surface having a smaller diameter than the large-diameter peripheral surface JML, and a large-diameter peripheral surface JMSL It has a three-stage outer peripheral surface with a medium-diameter peripheral surface JMSM that is an outer peripheral surface having a diameter between the small-diameter peripheral surfaces JMS.
The diameter of the large-diameter circumferential surface JML is formed to a diameter corresponding to the diameter of the inner circumferential surface 11MN (see FIG. 1A) that is the inner circumferential side of the outer-diameter surface portion 11 of the rolling bearing raceway ring 10n.
The diameter of the small-diameter circumferential surface JMS is formed to a diameter corresponding to the diameter of the inner circumferential surface 12MN (see FIG. 1A), which is the inner circumferential side of the inner diameter surface portion 12 of the rolling bearing raceway ring 10n.
The diameter of the medium-diameter circumferential surface JMM is formed such that a radial distance ΔD (see FIG. 3A) from the back side of the inner circumferential raceway surface Mn of the rolling bearing raceway ring 10n is a predetermined interval. .
Further, the shaft member J has a shaft end surface JMT that is orthogonal to the axial direction (rotational axis ZS direction) between the large-diameter circumferential surface JML and the small-diameter circumferential surface JMS.

Then, between the shaft member J and the housing H shown in FIG. 3A, the rolling bearing 10 is fitted from the right direction of FIG. In this case, the inner ring (rolling bearing raceway ring 10 n) of the rolling bearing 10 is press-fitted into the shaft member J, and the outer ring G is inserted into the housing H. In addition, it is preferable that the edge part by the side of the small diameter circumferential surface JMS in the large diameter circumferential surface JMS is given a chamfering process etc. so that it may be easy to press-fit.
The rolling bearing 10 is configured so that the outer peripheral portion of the outer ring G is in radial contact with the inner peripheral surface HM of the housing H and the outer peripheral surface portion of the bearing ring 10n for the rolling bearing on the large-diameter peripheral surface JML of the shaft member J. 11 inner peripheral surface 11MN is in contact with the small diameter peripheral surface JMS of the shaft member J so that the inner peripheral surface 12MN of the inner diameter surface portion 12 of the rolling bearing race 10n is in contact with the radial direction. The small-diameter side end surface 12MT (see FIG. 1A) of the rolling bearing race 10n is fitted into the shaft end surface JMT of the shaft member J so as to abut in the axial direction. The small-diameter side end surface 12MT is an end portion on the opposite side to the end surface portion 13 in the inner diameter surface portion 12, as shown in FIG.

As described above, as shown in FIG. 3A, the rolling bearing device including the rolling bearing raceway ring 10n, the housing H, and the shaft member J can constitute a rolling bearing device.
With this configuration, the contact area between the shaft member J, which is a press-fitting counterpart member, and the rolling bearing race 10n can be made larger (compared to the inner ring N in FIG. 7C). The occurrence of creep phenomenon can be further reduced.
Further, the rolling bearing raceway ring 10n has a shape that is difficult to be deformed when press-fitted into the shaft member J that is the counterpart member, and the diameter from the rolling element T by making the shaft member J an appropriate step shape. It has a structure that can sufficiently support the load in the direction.
Moreover, the rolling bearing 10 can be fitted at an appropriate position by press-fitting the shaft end surface JMT until the small-diameter side end surface 12MT of the rolling bearing raceway ring 10n abuts.

Next, the state in which the rolling bearing 10 is fitted so as to support the housing H that rotates relative to the shaft member J around the rotation axis ZS will be described with reference to FIG. To do.
3B shows an example of a state in which the rolling bearing 10 is press-fitted into the housing H, and the rolling bearing 10 is inserted into the shaft member J without being press-fitted.
In this case, the rolling bearing 10 includes a rolling bearing race 10g (refer to FIG. 1B) that is an outer ring, an inner ring N (corresponding to an inner race), and a plurality of rolling elements T (steel balls, etc.). It has. In addition, each rolling element T is held at a predetermined interval by a holder HT.
The inner ring N has an opposing raceway surface that is disposed on the inner circumference side of the rolling bearing raceway ring 10g and faces the outer circumference side raceway surface Mg. The rolling element T is accommodated between the outer peripheral raceway surface Mg and the opposing raceway surface and can roll. The outer ring to be press-fitted uses the rolling bearing raceway ring 10g described in the present embodiment, but any inner ring that is not press-fitted may be used. For example, the inner ring N shown in FIG. Will be described.

In this case, the diameter of the outer peripheral surface JM of the shaft member J is a diameter corresponding to the inner diameter of the inner ring N, and may be any diameter as long as the inner ring N can be inserted without being press-fitted.
Further, the inner peripheral side of the housing H includes a small-diameter peripheral surface HMS that is an inner peripheral surface having a small diameter, a large-diameter peripheral surface HML that is an inner peripheral surface having a larger diameter than the small-diameter peripheral surface HMS, and a small-diameter peripheral surface HMS. It has a three-stage inner peripheral surface with a medium-diameter peripheral surface HMM that is an inner peripheral surface having a diameter between the large-diameter peripheral surfaces HML.
The diameter of the large-diameter peripheral surface HML is formed to a diameter corresponding to the diameter of the outer peripheral surface 11MG (see FIG. 1B), which is the outer peripheral side of the outer diameter surface portion 11 of the rolling bearing raceway ring 10g.
The diameter of the small-diameter peripheral surface HMS is formed to a diameter corresponding to the diameter of the outer peripheral surface 12MG (see FIG. 1B), which is the outer peripheral side of the inner surface 12 of the rolling bearing race 10g.
The diameter of the medium-diameter circumferential surface JMM is formed such that a radial distance ΔD (see FIG. 3B) from the back side of the outer circumferential raceway surface Mg of the rolling bearing raceway ring 10g is a predetermined interval.
The housing H has a housing end surface HMT that is orthogonal to the axial direction (rotational axis ZS direction) between the large-diameter peripheral surface HML and the small-diameter peripheral surface HMS.

Then, the rolling bearing 10 is fitted between the shaft member J and the housing H shown in FIG. 3B from the right direction in FIG. In this case, the outer ring of the rolling bearing 10 (rolling bearing raceway ring 10 g) is press-fitted into the housing H, and the inner ring N is inserted into the shaft member J. In addition, it is preferable that the edge part by the side of the large diameter peripheral surface HML in the small diameter peripheral surface HMS is chamfered so that it may be easily press-fitted.
The rolling bearing 10 is configured such that the inner peripheral portion of the inner ring N abuts on the outer peripheral surface JM of the shaft member J in the radial direction and the small-diameter peripheral surface HMS of the housing H. The outer surface 12MG is in contact with the outer peripheral surface 12MG in the radial direction, and the outer peripheral surface 11MG of the outer diameter surface portion 11 of the rolling bearing race 10g is in contact with the large-diameter peripheral surface HML of the housing H. The large-diameter end surface 11MT (see FIG. 1B) of the rolling bearing race 10g is fitted into the housing end surface HMT so as to abut in the axial direction. The large-diameter end surface 11MT is an end portion on the opposite side to the end surface portion 13 in the outer-diameter surface portion 11, as shown in FIG.

As described above, as shown in FIG. 3B, the rolling bearing device including the rolling bearing raceway ring 10 g, the housing H, and the shaft member J can constitute a rolling bearing device.
With this configuration, the contact area between the housing H, which is a press-fitting counterpart member, and the rolling bearing raceway ring 10g can be made larger (compared to the outer ring G in FIG. 7C). Occurrence of the phenomenon can be further reduced.
Further, the rolling bearing race 10g has a shape that is difficult to be deformed when press-fitted into the housing H that is a counterpart member, and the radial direction from the rolling element T by making the housing H an appropriate step shape. It has a structure that can fully support the load.
Further, the rolling bearing 10 can be fitted into an appropriate position by press-fitting the housing end surface HMT until the large-diameter end surface 11MT of the rolling bearing raceway ring 10g comes into contact therewith.

● [Other examples (Fig. 4)]
As shown in FIG. 4A (axial sectional view), a rolling bearing 10 using a rolling bearing race 10n, a rolling bearing race 10g, a rolling element T, and a cage HT may be configured.
In this case, the shaft member J has the large-diameter circumferential surface JML, the medium-diameter circumferential surface JMM, the shaft end surface JMT, and the small-diameter circumferential surface JMS, and the housing H has the small-diameter circumferential surface HMS and the medium-diameter circumferential surface HMM. And a housing end surface HMT and a large-diameter peripheral surface HML.
Then, the rolling bearing 10 is press-fitted into the shaft member J from the right direction in FIG. In this case, even when the shaft member J rotates or the housing H rotates, the occurrence of the creep phenomenon of the bearing can be further reduced, and an appropriate rolling bearing device can be configured.

FIG. 4B (axial cross-sectional view) shows a cylindrical bearing SP instead of the medium-diameter circumferential surface JMM and the shaft end surface JMT of the shaft member in the rolling bearing device shown in FIG. An example is shown. In this case, the shaft member J only needs to have two surfaces, a large-diameter circumferential surface JML and a small-diameter circumferential surface JMS.
A cylindrical spacer SP can also be used in the rolling bearing device housing H shown in FIG. 3B instead of the medium-diameter circumferential surface HMM and the housing end surface HMT (not shown). In this case, the housing H only needs to be formed with two surfaces, a large-diameter peripheral surface HML and a small-diameter peripheral surface HMS.

5A to 5G show examples of shapes of the shaft member J and the annular spacer SP when the spacer SP is used for the shaft member J. FIG. 5A, 5E, and 5G, a member indicated by a symbol JT is a convex portion formed on the shaft member J in order to position the spacer SP in the axial direction.
In the example of FIG. 5A, the large-diameter peripheral surface JML is configured by the spacer SP, and in the example of FIG. 5B, the medium-diameter peripheral surface JMM and the shaft end surface JMT are configured by the spacer SP. In the example, the shaft end surface JMT is constituted by the spacer SP, and in the example of FIG. 5D, the small diameter circumferential surface JMS is constituted by the spacer SP. Note that the shaft end surface JMT and the small-diameter circumferential surface JMS can also be configured by spacers SP.
In the example of FIG. 5E, the large-diameter circumferential surface JML, the medium-diameter circumferential surface JMM, and the shaft end surface JMT are configured by spacers SP. In the example of FIG. 5F, the medium-diameter circumferential surface JMM and the shaft end surface JMT The small-diameter peripheral surface JMS is configured by the spacer SP, and in the example of FIG. 5G, the large-diameter peripheral surface JML, the medium-diameter peripheral surface JMM, the shaft end surface JMT, and the small-diameter peripheral surface JMS are configured by the spacer SP.
As described above, the shaft member J and the spacer SP can have various shapes, and the shaft member J is previously formed with a large-diameter peripheral surface JML, a medium-diameter peripheral surface JMM, a shaft end surface JMT, and a small-diameter peripheral surface JMS. Even if not, the spacer SP can be used to have the large-diameter peripheral surface JML, the medium-diameter peripheral surface JMM, the shaft end surface JMT, and the small-diameter peripheral surface JMS.
The same applies when the spacer SP is used for the housing H, but the description is omitted because it is the same as described above.

  As described above, the rolling bearing raceway 10n, 10g described in the present embodiment, the rolling bearing 10 having at least one of the rolling bearing raceway 10n or 10g and the rolling element T, and the rolling bearing 10 and the shaft. The rolling bearing device including the member J and the housing H has a shape that can be formed by processing from a metal plate, and can support a load from a rolling element with a larger support force. At the same time, it is difficult to deform during press-fitting, and the contact area with the press-fitting counterpart member can be further increased. Further, since it can be formed from a metal plate by press working or the like, the cost is lighter and lighter, the creep phenomenon of the bearing can be reduced, and the axial positioning accuracy during press-fitting can be further improved.

  The rolling bearing races 10n, 10g, the rolling bearing 10, and the rolling bearing device of the present invention are not limited to the appearance, configuration, structure, shape, etc. described in the present embodiment, and do not change the gist of the present invention. Various changes, additions and deletions can be made.

DESCRIPTION OF SYMBOLS 10 Rolling bearing 10g, 10n Rolling bearing bearing ring 11 Outer diameter surface part 11MG, 12MG Outer peripheral surface 11MN, 12MN Inner peripheral surface 11MT Large diameter side end surface 12 Inner diameter side surface 12MT Small diameter side end surface 13 End surface part G Outer ring H Housing HM Inner peripheral surface HML , JML Large-diameter circumferential surface HMM, JMM Medium-diameter circumferential surface HMS, JMS Small-diameter circumferential surface HMT Housing end surface HT Cage J Shaft member JM Outer circumferential surface JMT Shaft end surface Mg Outer circumferential raceway Mn Inner circumferential raceway N Inner ring SP spacer ZS Axis of rotation

Claims (6)

In the rolling bearing raceway ring having an annular shape, which is disposed on the inner peripheral side of a plurality of rolling elements arranged in an annular shape and processed from a metal plate to form an inner peripheral raceway surface of the rolling element,
The bearing ring for rolling bearing has an axial cross section cut along the axial direction, and is substantially U-shaped with an opening on one side in the axial direction, and has a small diameter cylindrical inner diameter surface portion and a larger diameter than the inner diameter surface portion. A cylindrical outer diameter surface portion, and the inner diameter surface portion and the outer diameter surface portion are connected to each other on the other side in the axial direction, and an end surface portion orthogonal to the axial direction,
In the outer diameter surface portion, a recess that becomes the inner circumferential side raceway surface is formed in an annular shape,
The side opposite to the end surface portion in the axial direction is formed such that the outer diameter surface portion protrudes in the axial direction rather than the inner diameter surface portion.
Rolling bearing races. In the rolling bearing raceway ring having an annular shape, which is disposed on the outer peripheral side of a plurality of rolling elements arranged in an annular shape and processed from a metal plate to form the outer peripheral raceway surface of the rolling element,
The bearing ring for rolling bearing has an axial cross section cut along the axial direction, and is substantially U-shaped with an opening on one side in the axial direction, and has a small diameter cylindrical inner diameter surface portion and a larger diameter than the inner diameter surface portion. A cylindrical outer diameter surface portion, and the inner diameter surface portion and the outer diameter surface portion are connected to each other on the other side in the axial direction, and an end surface portion orthogonal to the axial direction,
In the inner diameter surface portion, a recess that becomes the outer peripheral raceway surface is formed in an annular shape,
The side opposite to the end surface portion in the axial direction is formed such that the inner diameter surface portion protrudes in the axial direction rather than the outer diameter surface portion.
Rolling bearing races. A bearing ring for a rolling bearing according to claim 1;
An outer circumferential ring having an opposed raceway surface disposed on the outer circumferential side of the rolling bearing raceway and facing the inner circumferential raceway;
A plurality of rolling elements housed between the inner circumferential raceway surface and the opposing raceway surface and capable of rolling;
Rolling bearing. A bearing ring for a rolling bearing according to claim 2;
An inner peripheral race having an opposing raceway surface that is disposed on the inner peripheral side of the rolling bearing race and faces the outer peripheral raceway;
A plurality of rolling elements housed between the outer peripheral raceway surface and the opposing raceway surface and capable of rolling;
Rolling bearing. A rolling bearing according to claim 3;
A housing;
A rolling bearing device comprising: a shaft member housed in the housing and rotatable about a rotation axis relative to the housing;
The diameter of the inner peripheral surface of the housing has a diameter corresponding to the outer diameter of the outer peripheral race,
The outer peripheral side of the shaft member includes a large-diameter peripheral surface having a diameter corresponding to an inner peripheral side diameter of the outer diameter surface portion of the rolling bearing raceway ring, and an inner peripheral side of the inner diameter surface portion of the rolling bearing raceway ring. A small-diameter peripheral surface having a diameter corresponding to the diameter, and an axial end surface orthogonal to the axial direction between the large-diameter peripheral surface and the small-diameter peripheral surface in the axial direction,
The rolling bearing is
In such a manner that the outer peripheral portion of the outer peripheral race is in radial contact with the inner peripheral surface of the housing,
And so that the inner peripheral surface of the outer diameter surface portion is in radial contact with the large-diameter peripheral surface of the shaft member,
And so that the inner peripheral surface of the inner diameter surface portion is in radial contact with the small-diameter peripheral surface of the shaft member,
And it is fitted to the shaft end surface of the shaft member so that the end on the opposite side to the end surface portion of the inner diameter surface portion abuts in the axial direction.
Rolling bearing device. A rolling bearing according to claim 4;
A housing;
A rolling bearing device comprising: a shaft member housed in the housing and rotatable about a rotation axis relative to the housing;
The diameter of the outer peripheral surface of the shaft member has a diameter corresponding to the inner diameter of the inner peripheral raceway,
The inner peripheral side of the housing corresponds to a small-diameter peripheral surface having a diameter corresponding to a diameter on the outer peripheral side of the inner diameter surface portion of the rolling bearing raceway ring, and an outer peripheral side diameter of the outer diameter surface portion of the rolling bearing raceway ring. A large-diameter peripheral surface having a diameter to be formed, and a housing end surface orthogonal to the axial direction between the large-diameter peripheral surface and the small-diameter peripheral surface in the axial direction,
The rolling bearing is
To the outer peripheral surface of the shaft member, the inner peripheral portion of the inner peripheral race ring abuts in the radial direction,
And the outer peripheral surface of the inner diameter surface portion is in radial contact with the small-diameter peripheral surface of the housing,
And so that the outer peripheral surface of the outer diameter surface portion is in radial contact with the large-diameter peripheral surface of the housing,
And it is fitted to the housing end surface of the housing so that the end portion on the opposite side to the end surface portion in the outer diameter surface portion abuts in the axial direction.
Rolling bearing device.

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