JP2009243556A - Cage for bearing and roller bearing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the labor when assembling a cage while preventing a fall of a cage, securing accuracy in prevention of a fall of the cage by separately providing a partition, and reducing the cost of the cage. <P>SOLUTION: This cage for a bearing comprises: a cage body 10 comprising sliding parts 2a and 2b, which are formed in a partition 2 between pockets 1 and 1, and fall stoppers 4a and 4b for regulating the slip-out amount of a rolling body 3 housed in the pocket 1, and in which holes 11 facing an inner raceway and an outer raceway are arranged in the circumferential direction; and a pocket frame 20 formed with the sliding parts 2a and 2b and the fall stoppers 4a and 4b equivalent to one pocket in a frame part 21. The cage body 10 is formed from an iron-based metal, and the pocket frame 20 is formed from a copper-based metal. When the cage body 10 and the pocket frame 20 are assembled with each other, while preventing a contact of the fall stoppers 4a and 4b with the rolling bodies 3, by press-fitting the frame part 21 inside the hole 11 in the condition wherein the rolling bodies 3 are housed in the hole 11, the pocket frame 20 is positioned relative to the cage body 10, and the pockets 1 with the rolling bodies 3 can be formed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cage for a rolling bearing and a roller bearing incorporating the same.

  Conventionally, in consideration of the time of assembling the bearing, a cage having a stopper that restricts the amount of rolling elements placed in the pockets to the raceway side is used. The above-mentioned stopper can receive the rolling elements that are about to come out from the opening on the outer ring side or the inner ring side of the pocket from both sides of the opening.

  As this type of cage, for example, as shown in FIG. 22, an assembly in which a pocket 205 of the cage 204 faces the track 203 of the inner ring 201 or the outer ring 202 and a rolling element 206 is put in each pocket 205 is formed. When assembled in the axial direction with respect to the outer ring 202 or the inner ring 201 arranged concentrically with the assembly, the contact between the end surface 207 of the outer ring 202 or the inner ring 201 and the rolling element 206 of the assembly is restrained by the restraint 208 (the restriction position in the figure is There is something that is prevented by drawing with a one-dot chain line. The stopper 208 is formed integrally with the cage, and the rolling element 206 is pushed into the pocket 205 between the stoppers. This type of cage is not preferable when it is required to ensure the accuracy of the stopper 208 because the stopper 208 is elastically deformed by contact with the rolling element 206.

  Therefore, projecting pieces are formed in advance on both sides of the outer ring side or inner ring side opening of the cage pocket, and after the rolling elements are placed in the pockets, a drop stopper is formed by plastic bending of the projecting piece. The thing is also utilized (for example, patent document 1).

Japanese Utility Model Publication No. 5-12753

  However, the bearing cage as described in the above-mentioned Patent Document 1 needs to adjust the degree of bending of the projecting portion by measuring the gap with the rolling element with a clearance gauge in order to ensure the accuracy of dropping. , It is very troublesome to carry out the work for each stop.

  Further, the partition between the pockets adjacent to each other in the circumferential direction of the cage has a sliding portion that contacts the rolling element during the bearing operation. In general, the cage is manufactured from the same material, but the slidability of the sliding portion greatly depends on the material. For this reason, when a particularly excellent slidability is required as in the rolling element guide system, for example, a copper-based metal is adopted as a material of the cage without using a general iron-based metal. . In recent years, copper-based metals are more expensive than iron-based metals. Therefore, in order to reduce the cost of the cage, it is conceivable to attach another member that is more slidable than the cage material to the partition. However, it is preferable to reduce the assembly effort as much as possible.

  In view of the above circumstances, the problem of the present invention is that it is time-consuming to assemble the cage while securing the accuracy of the cage by securing the cage and separating the partition, and reducing the cost of the cage. It is to suppress.

In order to achieve the above object, the present invention provides a bearing provided with a sliding portion formed in a partition between pockets adjacent in the circumferential direction, and a stopper that regulates the amount of rolling-out of the rolling element that has entered the pocket. A cage body in which holes facing the raceways of the inner and outer rings are arranged in the circumferential direction, and a pocket frame in which at least one of the sliding portion for one pocket and the stopper is formed in a frame portion The pocket frame is positioned on the cage body by combining the cage body and the pocket frame with the rolling element inserted into the frame hole or the hole of the frame portion, and the rolling body is contained. The pocket was formed.
Here, the “sliding portion” refers to a surface portion of the partition where the rolling element can come into contact during the bearing operation. The “circumferential direction” refers to a circumferential direction around the cage center axis.

According to this invention, since the cage main body and the pocket frame are separated, the selection of the processing method and the accuracy control can be performed separately from the cage main body. It can be formed on the frame with a desired shape and accuracy. The stopper or the like is formed on the frame portion of the pocket frame, and at the time of the above combination, the stopper or the like to be provided separately on both sides of the pocket can be handled simultaneously and integrally.
If the pocket frame and the cage main body are combined, the pocket frame can be positioned on the cage main body using the contact of the combination part. If the combination is performed with the rolling element inserted into the pocket of the pocket frame or the hole of the cage body, at the same time as the positioning described above, the locking and sliding parts for one pocket are stopped on the cage body. A pocket with rolling elements can be formed.
For example, when the frame portion is formed with a stopper, the hole of the cage main body can face one of the raceways of the inner and outer rings, and the pocket can be formed with the rolling element in the hole. Since it is possible to design in advance so that the stopper and the rolling element do not contact between the above combinations, the precision of the stopper can be ensured even after the cage is assembled.
In addition, when the sliding part is formed in the frame part, it is possible to form only the pocket frame with a material having excellent slidability, thereby reducing the amount of expensive material used and reducing the cost of the cage. be able to.

  Therefore, according to the present invention, it is possible to ensure the accuracy of the retaining by reducing the retaining of the retainer or separating the partition, and to reduce the cost of the retainer. Since the combination and the work of putting the rolling elements in the pocket can be performed at the same time, it is possible to reduce the time and effort of assembling the cage.

  For example, in the configuration in which one retaining member is attached to each partition of the cage, it is necessary to maintain the rolling elements in the pocket until the retaining member is attached to the partition on both sides of the pocket, and the number of partitions falls. Installation work of the stop member occurs. According to the above-described configuration, it is possible to perform the attachment of the stopper for one pocket and the rolling element insertion at the same time, and the time for maintaining the rolling element in the hole can be shortened, and the number of times of attaching the pocket frame is the number of pockets. Since they are the same, the number of attachments can be reduced at least once.

  In addition, this invention can flexibly change the specifications of the retainer body and the pocket frame by using the pocket frame and the retainer body separately. Use the same rolling elements for the inner and outer rings and rolling elements, and change the specifications of the pocket frame and cage body to produce cages with other specifications unless the combination of the cage body and pocket frame is changed. Can do. For example, even if the specifications of the pocket frame or the cage body are changed, the cage body or the pocket frame, which is the counterpart part, can be used as it is, and this also makes it possible to reduce the cost of the cage. .

Hereinafter, each embodiment of the present invention will be described.
1st Embodiment which concerns on this invention provides the said pocket frame for every said pocket, forms the said sliding part in the said frame part, and the fitting surface of one of the said frame part and the said hole inside A convex part protruding more is formed, a concave part recessed from the fitting surface is formed on the other side, and the convex part enters the concave part by mounting the frame part inside the hole, so that the pocket frame is The retainer body is configured to be prevented from coming off.

If a sliding part is formed in a frame part like 1st Embodiment, a fitting surface can be formed using the frame outer side of the wall in which the sliding part was formed.
If one of the frame part and the inside of the hole is formed with a convex part protruding from the fitting surface, and the other part is formed with a concave part recessed from the fitting surface, the convex part is formed between the press-fitting. Can enter the recess. If the frame portion is mounted inside the hole, the pocket frame can be positioned with respect to the cage body.
Therefore, according to the first embodiment, simultaneously with the positioning of the pocket frame, it is possible to prevent the pocket frame from coming off on either side of the inner and outer rings, and a separate retaining operation is not required.

  Here, suppressing the interference between the fittings is convenient for securing the drop and the accuracy of the sliding portion, and can reduce the burden on the operator, leading to a reduction in assembly time. When the pocket frame is provided for each pocket, the single weight of the pocket frame can be reduced and the above interference can be suppressed.

  The second embodiment according to the present invention employs a configuration in which convex portions are formed on the outer side of the frame of the sliding portion in the first embodiment.

According to 2nd Embodiment, a frame part can be reinforced using a convex part, thinning the frame part in which the sliding part was formed as a whole. For this reason, even when a soft metal such as a copper alloy is used as the material of the pocket frame, the deformation of the sliding portion at the time of mounting can be prevented.
In addition, although a recessed part can also be formed in the frame outer side of a sliding part, since the amount of meat will increase comparatively rather than the case where a convex part is formed, in the point which can reduce the usage-amount of an expensive material. It is preferable to form the convex part on the frame part side.

The configuration relating to the convex portion and the concave portion can be adopted even when the inner and outer rings are configured for a radial bearing in the radial direction and the inner and outer rings are configured for a thrust bearing in the axial direction.
In the case of a cage for a radial bearing, since the pocket is opened to the inner and outer diameters of the cage, the hole of the cage body is also opened to the inner and outer diameters. In this case, the centrifugal force generated by the rotation of the cage during the bearing operation acts on the pocket frame as a force in the removal direction.
The configuration related to the convex portion and the concave portion is suitable for radial bearings in that the pocket frame can be prevented from coming off on either side of the inner and outer rings, so that the pocket frame can be fixed and strengthened against centrifugal force. .

  In the first and second embodiments, the position of the pocket frame can be secured by attaching the pocket frame, and at the same time, the stopper can be obtained. it can. For example, a pocket frame or a cage body can be caulked. Even if the stopper is provided in a separate process, it is preferable to employ as simple means as possible in order to reduce the trouble of assembling the cage.

  For example, in the third embodiment according to the present invention, the hole is formed so as to open to the inner and outer diameters of the cage body, and the pocket frame is directed from one side to the other side with respect to the cage body. In combination, the seat surface formed on the pocket frame is seated on the cage body so that it is prevented from coming off on the other side of the inner and outer diameters, and all the pockets are formed on each pocket frame. Circumferential grooves are arranged on the same circumference, and each pocket frame is configured to be prevented from coming off on one side of the inner and outer diameters with respect to the retainer body by fitting ring members into the circumferential grooves. Is.

If the hole is formed so as to open to the inner and outer diameters of the cage body as in the third embodiment, it can be used for a radial bearing, and the pocket frame can be used with respect to the cage body from one side of the inner and outer diameters to the other side. Can be combined towards the side.
By combining the pocket frame with respect to the cage body from one side of the inner / outer diameter toward the other side, the seating surface formed on the pocket frame sits on the cage body and is prevented from coming off on the other side of the inner / outer diameter. Simultaneously with the positioning, the pocket frame can be prevented from coming off to the other side of the inner and outer diameters using the combined portion of the pocket frame and the cage body.
Here, since the pocket frame is combined with respect to the cage body from one side of the inner / outer diameter toward the other side, all pockets are formed using a plurality of pocket frames.
And since the circumferential direction groove | channel formed in each pocket frame in the state in which all the pockets were formed is located in a line on the same circumference, a ring member can be fitted in these circumferential direction grooves. By fitting the ring member, each pocket frame is prevented from coming off on one side of the inner and outer diameters with respect to the retainer body, so that all the pocket frames can be prevented from coming off on one side of the inner and outer diameters at the same time.
Thus, the third embodiment can form a radial bearing retainer in which the pocket frame is prevented from coming off on either side of the inner and outer rings.
Moreover, 3rd Embodiment can abbreviate | omit the said convex part and a recessed part, and can make the combination of a pocket frame light.
In the third embodiment, since the pocket frame is prevented from coming off to the other side of the inner and outer diameters simultaneously with the combination of the pocket frames, it is not necessary to add an assembly process for that purpose.
In the third embodiment, all the pocket frames are prevented from coming off on one side of the inner and outer diameters simply by fitting the ring members. Can be saved.

  The ring member may be any member that can be hooked on all the pocket frames and prevented from coming off, and may be either an endless ring or an endless ring.

  In the case of adopting the configuration related to the ring member, it is possible to appropriately select whether the ring member is disposed on the inner diameter or the outer diameter of the cage in consideration of the centrifugal force and the cage guide method.

  For example, the fourth embodiment according to the present invention employs a configuration in which the circumferential groove is passed through an outer diameter and the ring member is an O-ring.

When the circumferential groove is passed through the outer diameter of the cage as in the fourth embodiment, all the pocket frames can be simultaneously tightened against the cage body by the rubber elasticity of the O-ring.
The fourth embodiment can reduce the procurement cost of the ring member by using a general-purpose O-ring for the ring member.
In the fourth embodiment, since the ring member is formed of an O-ring, the diameter is superior to that of a metal retaining ring, which is also a general-purpose product, so that it can be easily fitted in the circumferential groove. It is.
In addition, since rigidity cannot be expected in the O-ring, it is difficult to prevent the pocket frame from coming off by fitting the O-ring to the inner diameter of the cage.

  Therefore, the fifth embodiment according to the present invention employs a configuration in which the circumferential groove is passed through the inner diameter and the ring member is a metal C-shaped concentric retaining ring.

When the circumferential groove is passed through the inner diameter of the cage as in the fifth embodiment, if a metal ring member having excellent rigidity is used, the pocket frame is pressed against the cage body to prevent it from coming out to the inner diameter side. be able to.
Further, in the fifth embodiment, the cost of procurement of the ring member can be reduced by using a general-purpose C-shaped concentric retaining ring as the ring member.
Moreover, since 5th Embodiment employ | adopted the C-shaped concentric retaining ring, the circumferential direction groove | channel of all the pocket frames can be formed identically, and does not inhibit formation of the same components of all the pocket frames.

  In order to avoid the pocket, the circumferential groove is formed in a portion of the cage main body or pocket frame that becomes the inner diameter or outer diameter of the annular portion of the cage. In the case where the cage is a bearing ring guide system, a cylindrical portion guided by the cage guide surface of the bearing ring is formed on the inner diameter or outer diameter of the annular portion of the cage.

  Therefore, the sixth embodiment according to the present invention employs a configuration in which a raceway guide system is used that uses the raceway on the other side of the inner and outer races.

  If the raceway guide system using the raceway on the other side of the inner and outer races is used as in the sixth embodiment, the cylindrical part is formed on the radial surface of the annular part on the side where there is no circumferential groove. The contact area between the bearing ring and the cage guide surface can be ensured.

  On the other hand, if it is assumed that a thrust bearing that receives only an axial load in one direction, such as a thrust ball bearing or a thrust cylindrical roller bearing, is used on the vertical axis, the pocket frame only needs to be prevented from coming off on one side.

For example, in the seventh embodiment according to the present invention, the holes of the cage body are formed so as to open on both side surfaces, the pocket frame is provided for each pocket, and the sliding portion and the inner and outer rings are provided. The rolling element is formed so that the rolling element can be held independently by the frame part including the stopper that restricts the rolling element with respect to both sides, and the frame part is attached to the inside of the hole from one side to the other side. By doing so, the seating surface formed on the pocket frame sits on the cage body, and the pocket frame is configured to be prevented from coming off only on the other side surface by contact between the seating surface and the cage body. is there.
Here, in the present invention, “an anti-falling mechanism that restricts the rolling elements with respect to both sides of the inner and outer rings” means that the amount of the rolling elements that are about to come out from the opening on the inner ring side of one pocket is received and the amount that comes out to the inner ring side. It means both a fall stop and a fall stop that restricts the amount of slipping out to the outer ring side by receiving the rolling elements that are about to come out from the opening on the outer ring side of the one pocket.

If the holes of the cage main body are formed so as to open on both side surfaces as in the seventh embodiment, the open pockets are formed on both side surfaces, so that it can be used for a thrust bearing.
In addition, if a pocket frame with a fitting surface formed on the outside of the frame is provided for each pocket using a sliding portion, positioning using press-fit fitting can be performed, and the interference of the fitting can be suppressed. it can. In addition, if the rolling frame is formed so that the rolling frame can be independently held by the frame part including the stopper that restricts the rolling element with respect to both sides of the sliding part and the inner and outer rings, the rolling element with a cage can be configured. it can. For this reason, it can be used for the above-mentioned thrust bearing which is an inner and outer ring separation type.
If the seat surface formed on the pocket frame is seated on the cage body by mounting the pocket frame inside the hole, the insertion of the pocket frame is stopped by the contact between the seat surface and the cage body, Simultaneously with the combination of the pocket frames, the pocket frames are prevented from coming off only on the other side surface.
When a thrust bearing that receives only an axial load in one direction is used for the vertical axis, the centrifugal force acting on the pocket frame does not act in the pulling direction and can be received by the cage body. For this reason, even if the pocket frame is configured to be retained only on the other side, the retainer is effective against the weight of the cage body and the unidirectional axial load that the pocket frame receives from the rolling elements. By using the bearing cage in the direction, the position of the pocket frame can be secured during the bearing operation.
As described above, the use conditions of the seventh embodiment are limited compared to the first embodiment and the like. However, the convexity and the concave part are omitted by using the limitation, and the interference of the fitting is performed. Can be suppressed.

  In the present invention, it is possible to ensure the accuracy of dropping while simultaneously assembling the cage and assembling the assembly with rolling elements using one of the inner and outer rings of the radial bearing.

  For example, in an eighth embodiment according to the present invention, the hole is formed so as to open to the inner and outer diameters of the retainer body, and the drop that restricts the rolling element to only one side of the inner and outer rings in the frame portion. The stopper does not come into contact with the rolling element while the pocket frame is combined from the inner and outer diameters from one side to the other side with respect to the retainer body in the state where the stopper is formed and the rolling element is put in the hole. It is comprised as follows.

  According to the eighth embodiment, the hole of the cage body can face the raceway on the other side of the inner and outer races, and the pocket frame can be combined with the rolling element in the hole, and the fall is prevented in the meantime. Does not come into contact with the rolling elements, and it is possible to ensure the accuracy of the retaining formed in the frame portion in advance. As described above, in the eighth embodiment, all the pocket formation is completed and the assembly of the cage is completed, and at the same time, the assembly of the assembly with the rolling elements using one of the inner and outer rings of the radial bearing can be completed. .

  Moreover, in this invention, the precision of fall prevention can also be ensured, adopting the structure which combines a pocket frame in the state which put the rolling element in the frame hole of the frame part.

  For example, in the ninth embodiment according to the present invention, the pocket frame is integrally formed so that the rolling element can be independently held by the frame portion including the stopper that restricts the rolling element with respect to both sides of the inner and outer rings. The frame has a structure in which an opening into which the rolling element can be inserted in a non-contact manner is opened.

As in the ninth embodiment, if the frame portion includes the stopper that restricts the rolling element with respect to both sides of the inner and outer rings, the rolling element is configured to be able to be held independently using the stopper. be able to.
In order to reduce the number of parts, the pocket frame is preferably formed as an integral body as much as possible.
If the slot that allows the rolling element to be inserted in a non-contact manner is opened in the frame, the rolling element will not be pushed into the frame hole while being made as an integrally formed body. Can be secured. Since the rolling element can be independently held by the frame part, the cage main body and the pocket frame can be combined with the rolling element put in the frame hole of the frame part. As described above, the ninth embodiment can constitute a rolling element with a cage that can hold all the rolling elements with a cage alone, and is therefore suitable for a separated inner and outer ring type rolling bearing.

  According to a tenth embodiment of the present invention, the pocket frame is provided for each pocket, and the frame portion including the stopper for restricting the rolling element with respect to both sides of the inner and outer rings is provided with the rolling element. The frame part is fitted inside the hole by combining the retainer body and the pocket frame with the rolling element inserted into the frame hole of the frame part with the rolling element inserted between the two sides. It is configured to be separated and stopped.

As in the tenth embodiment, if the frame portion including the stopper that restricts the rolling elements with respect to both sides of the inner and outer rings is a two-part structure that can be held independently by sandwiching the rolling elements from both sides, the rolling elements are framed. It does not push into the hole.
When the pocket frame is provided for each pocket, the state in which the rolling element is sandwiched from both sides is grasped with a finger to maintain the state of the frame portion, and can be combined with the cage body as it is.
If the frame portion is fitted inside the hole by the combination, the frame portion is separated and stopped simultaneously with the combination of the pocket frames, so that a pocket with rolling elements can be formed.
As in the ninth embodiment, the tenth embodiment can hold the rolling elements by the frame portion, and thus is a cage suitable for the inner and outer ring separated type rolling bearings.

  The present invention is not intended to ensure the accuracy of drop prevention, but is intended to realize a cage suitable for use as a separate member of the sliding portion, a single part of the pocket frame, and an inner and outer ring separated type bearing. It is possible to deal with cases.

  For example, in an eleventh embodiment according to the present invention, the pocket frame is integrally formed so that the rolling element can be independently held by the frame portion including the stopper that restricts the rolling element with respect to both sides of the inner and outer rings. And adopting a configuration in which the rolling element can be pushed into a frame hole of the frame portion.

  In the eleventh embodiment, the pocket frame can be combined with the cage body after the rolling element is pushed into the frame hole of the frame portion using elastic deformation as in the conventional case.

  The present invention is not limited to a configuration in which a pocket frame is provided for each pocket, and a configuration in which a plurality of pockets are formed simultaneously by a combination of one pocket frame and a cage body depending on the specifications of the bearing cage. You can also

  For example, in a twelfth embodiment according to the present invention, in the third embodiment, the pocket frame is formed so that two or more of the frame portions are arranged in a circumferential direction, and the inner and outer rings are formed on the frame portion. The stopper is formed only on one side to restrict the rolling elements, and the pocket frame is placed on the cage body in a state where the rolling elements are inserted into the number of holes corresponding to the two or more frame portions. The inner and outer diameters can be combined from one side, and during the combination, all the stoppers are not in contact with the rolling elements, and each of the frame portions at both ends is pressed against the rolling elements in the corresponding holes. The both sides of the pocket frame in the circumferential direction are elastically warped on one side of the inner and outer diameters, so that each frame part fits inside the corresponding row of holes, and each frame part and the inner fitting part of the hole The pocket frame is positioned on the cage body. Those configured as.

As in the twelfth embodiment, when two or more frame portions are formed as pocket frames arranged in the circumferential direction, the frame portion is provided with a stopper that restricts the rolling elements on the other side of the inner and outer rings. When the pocket frame is combined from one side of the inner and outer diameters toward the other side as in the embodiment, the stoppers are in the way and the pocket frame cannot be combined well. Therefore, the frame portion is provided with a stopper that restricts the rolling elements only on one side of the inner and outer rings, and the pocket frames are combined in a state where the rolling elements are inserted in a number of holes corresponding to two or more frame portions. become.
Since the pocket frames are combined with the rolling elements in the holes as described above, the frame holes of the respective frame portions and the corresponding holes cannot be directly overlapped. Instead, while assembling the pocket frame with the cage body, the frame portions at both ends can be brought into contact with the rolling elements that are aligned and enter the holes at both ends. Using these contacts, if each of the frame parts at both ends is pressed against the rolling elements in the corresponding holes, both sides of the pocket frame in the circumferential direction elastically warp on one side of the inner and outer diameters. The frame portions at both ends of the row can slide on the rolling elements that have entered the corresponding holes, and the frame portions can gradually overlap the corresponding rows of holes and fit inside the holes. When the frame portions at both ends of the arrangement are fitted, the other frame portions in the middle of the arrangement naturally fit inside the corresponding holes. The pocket frame is positioned on the cage main body by the fitting portion inside each frame portion and the hole. In this way, the twelfth embodiment can simultaneously form pockets containing a plurality of rolling elements. If all the stoppers do not come into contact with the rolling elements during the above combination, the precision of the stopper can be ensured. After combining all the pocket frames, the ring member may be fitted.

  In the twelfth embodiment, the depth of fitting between the frame portion and the hole can be set as appropriate as long as it does not hinder the combination of the pocket frames and the accuracy of retaining.

  For example, the thirteenth embodiment according to the present invention employs a configuration in which the sliding portion is formed inside a hole of the cage body.

  When the sliding part is formed inside the hole as in the thirteenth embodiment, the sliding part is prevented from being deformed when pressed against the rolling elements at both ends as compared with the structure formed in the frame part. The accuracy of the sliding part can be ensured. Moreover, since the sliding part is formed in the cage main body and is not divided into the frame part and the cage main body, there is no fear that the seam contacts the rolling surface of the rolling element.

  The fourteenth embodiment according to the present invention employs a configuration in which the rolling element is a cylindrical roller in the twelfth embodiment or the thirteenth embodiment.

  According to the fourteenth embodiment, while the frame portions at both ends of the row gradually slide on the rolling elements, the frame portions slide on the cylindrical surface parallel to the axial direction, and the frame as in the case of balls, tapered rollers, and spherical rollers. The contact between the part and the rolling surface is not narrow, and the pocket frame is difficult to tilt. For this reason, 14th Embodiment can perform the combination of a pocket frame especially easily.

  As described above, in the present invention, when the sliding portion is formed in the frame portion, the pocket frame is formed of a material that is more slidable than the material of the cage body regardless of the fixing structure of the pocket frame. As a result, the amount of expensive material used can be reduced and the cost of the cage can be reduced.

  The material of the pocket frame may be copper metal or synthetic resin, such as tetrafluoroethylene resin, polyamide resin, polyether ether ketone (PEEK) resin, especially DuPont products for high temperature applications: A wholly aromatic polyimide resin such as Spell (registered trademark) SP series can be used. As the material of the cage main body employed together with these, ferrous metals such as bearing steel and general structural rolled steel can be employed.

  For example, the fifteenth embodiment according to the present invention employs a configuration in which the sliding portion is formed in the frame portion, the cage body material is an iron-based metal, and the pocket frame material is a copper-based metal. It is a thing.

According to the fifteenth embodiment, the cage can be manufactured at a lower cost than when the cage is formed only from a copper-based metal that is more expensive than the iron-based metal, and the rigidity of the iron-based metal is higher than that of the copper-based metal. Since it is excellent and the specific gravity of the iron-based metal is lighter than that of the copper-based metal, it is possible to reduce the weight of the cage in the cage main body than when the cage is formed only of the copper-based metal. If the cage becomes lighter, centrifugal force can be suppressed, so that the pocket frame can be easily fixed.
In addition, if the cage body is made of iron-based metal, it can be integrally formed by press working, such as punching cage manufacturing technology, and it is easy to achieve further weight reduction by adopting blanking and rib formation. Become.
When a cage for large bearings or ultra-large bearings is formed only with a copper-based metal, sophisticated casting and machined machining are required, but in the fifteenth embodiment, only the pocket frame is highly manufactured with copper-based metal. What is necessary is just to combine with the said weight reduction, and it is suitable for the holder for large sized bearings or a super-large-sized bearing.

  In addition, the sixteenth embodiment according to the present invention employs a configuration in which the sliding portion is formed in the frame portion, the cage body material is an iron-based metal, and the pocket frame material is a synthetic resin. Is.

  According to the sixteenth embodiment, the rigidity of the iron-based metal is superior to that of the synthetic resin, and the lubricity of the synthetic resin is superior to that of the iron-based metal. It is also possible to improve the strength of the cage while increasing the height.

  The bearing cage according to the present invention can be incorporated into a roller bearing.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings.

  Example 1 employs the first, second, eighth, and sixteenth embodiments together. FIG. 1 is a perspective view showing a state in which a part of the circumferential direction of Example 1 is extracted and the cage is assembled. FIG. 2A shows a cross-sectional view of the pocket of Example 1 cut along a radial plane. FIG. 2B shows a cross-sectional view of the pocket of Example 1 cut along an axial plane. FIG. 3 is an overall perspective view of the first embodiment.

  As shown in FIGS. 1 to 3, the first embodiment includes sliding portions 2 a and 2 b formed in a partition 2 between the pockets 1 adjacent to each other in the circumferential direction, and rolling elements 3 in the pocket 1. The stoppers 4a and 4b for restricting the amount of withdrawal are provided.

  Example 1 is for a radial bearing. For this reason, the pocket 1 is open to the inner and outer diameters of the cage.

  The inner and outer diameters of the two annular portions 5 connected by each partition 2 are cylindrical portions. For this reason, the first embodiment can be used in a raceway guide system using the inner diameter or the outer diameter of the annular portion 5 and the cage guide surface of the outer ring or the inner ring (not shown).

  The sliding portions 2a and 2b are portions where the rolling elements 3 can come into contact during the bearing operation. In Example 1, the circumferential direction edge part formed in the partition 2 among the inner surfaces of the pocket 1 is a plane along the axial direction. In Example 1, since the cylindrical roller is adopted as the rolling element 3, the sliding portions 2a and 2b existing on the plane along the axial direction are the circumferential end portions formed in the partition 2, It may be considered a part on the pitch circle diameter of the rolling elements 3, 3.

  The stoppers 4a and 4b protrude from the circumferential end portion formed in the partition 2 so as to restrict the amount of the rolling element 3 coming out only to the inner ring side.

  In the first embodiment, the cage body 10 in which the holes 11 facing the raceway (not shown) of the inner and outer rings are arranged in the circumferential direction, the sliding portions 2a and 2b and the stoppers 4a and 4b for one pocket are provided in the frame portion 21. And a pocket frame 20 formed.

  Carbon steel, which is a kind of iron-based metal, is adopted as a material for the cage body 10. As a material for the pocket frame 20, a high-strength brass alloy, which is a kind of copper-based metal, is employed. Synthetic resins such as the above polyamide resin can also be adopted as the material of the pocket frame 20.

  The cage body 10 is an annular body that is integrally formed so that the holes 11 that open only to the inner and outer diameters are arranged at equal intervals in the circumferential direction.

  The pocket frame 20 is provided for each pocket 1 and has one frame portion 21. The frame portion 21 is a wall portion for connecting the sliding portions 2a and 2b and the stoppers 4a and 4b for one pocket so that they can be handled simultaneously and integrally.

  The pocket frame 20 is configured to press-fit the frame outer side of the frame portion 21 into the inner periphery of the hole 11 from the inner diameter side to the outer diameter side with respect to the cage body 10. By this press-fitting, the flat fitting surfaces 22 a and 22 b formed on the outer periphery of the frame portion 21 and the flat fitting surfaces 12 a and 12 b formed on the inner periphery of the hole 11 are fitted.

  Moreover, the recessed part 13 depressed from the fitting surfaces 12a and 12b is formed in the inner periphery of the hole 11. On the other hand, on the outer periphery of the frame portion 21, a convex portion 23 protruding from the fitting surfaces 22a and 22b is formed. Due to the above-described press-fitting, the convex portion 23 enters the concave portion 13, whereby the press-fitting is stopped at the above-mentioned fitting position, and the pocket frame 20 is prevented from coming off on either side of the inner and outer rings with respect to the cage body 10. Is done.

  The concave portion 13 and the convex portion 23 are formed so as to cover the entire circumference on a plane orthogonal to the press-fitting direction of the pocket frame. This is for facilitating the press-fitting and fitting of the pocket frame 20 straight, while preventing the pocket frame 20 from coming off all around, and is not limited to such an embodiment. For example, the concave portion 13 and the convex portion 23 are provided. Can also be formed in a discrete arrangement in the circumferential direction.

  Moreover, the convex part 23 is formed in the frame outer side of the sliding parts 2a and 2b, and the frame part 21 is reinforced by this convex part 23.

  The pocket frame 20 is combined in a state in which the entire pocket frame 20 is fitted in the hole 11 by the above press-fitting. In that state, the contact between the inner fitting surfaces 12a, 12b of the hole 11 and the outer fitting surfaces 22a, 22b of the frame portion 21, and the concave portion 13 inside the hole 11 and the convex portion 23 of the frame portion 21. The pocket frame 20 is positioned on the cage body 10 by the contact with. Note that the inner surface of the pocket 1 including the sliding portions 2a and 2b and the stoppers 4a and 4b is formed in advance inside the frame portion 21. Thereby, the strength for press-fitting and the fitting area necessary for the positioning are ensured while the interference of the fitting is made as small as possible.

  In the first embodiment, the stoppers 4a and 4b are formed so as to restrict the rolling element 3 only on the inner ring side, and the rolling element 3 cannot be put into the frame hole of the frame portion 21 and held alone. For this reason, the above press-fitting is performed in a state where the hole 11 of the cage body 10 faces the race of the outer ring and the rolling element 3 is inserted in the hole 11. When press-fitting as described above, the frame portion 21 enters between the rolling elements 3 and the inner periphery of the hole 11, and simultaneously with the combination of the pocket frame 20, the pocket 1 containing the rolling elements 3 is formed.

  Even if the rolling element 3 and the opening edge on the outer ring side of the frame portion 21 come into contact during the above press fitting, the rolling element 3 can easily escape to the center of the hole 11. In the inner periphery of the frame portion 21 in which the entire inner surface of the pocket 1 is formed, there is no portion that is caught by the rolling element 3 during the press-fitting. Thereby, the rolling surface of the rolling element 3 is prevented from being damaged, and the accuracy of the sliding portions 2a and 2b after press-fitting is ensured.

  During the press-fitting and fitting, the stoppers 4a and 4b do not come into contact with the rolling elements 3 that have entered the holes 11 as long as they are combined in a normal direction.

  Accordingly, in the first embodiment, the stoppers 4a and 4b are formed in the pocket frame 20 with a desired accuracy in advance, and the combination work of the pocket frame 20 and the cage body 10 and the operation of putting the rolling element 3 into the pocket 1 are performed. Since it can be performed simultaneously, it is possible to reduce the time and effort of assembling, and to ensure the accuracy of the stoppers 4a and 4b even after the combination.

  That is, according to the first embodiment, the outer ring assembly is assembled by repeating the work of assembling the pocket frame 20 with the hole 11 of the cage body 10 facing the race of the outer ring and the rolling element 3 in the hole 11. Can do. At this time, the accuracy of all the stoppers 4a and 4b is ensured. Therefore, in the first embodiment, when the outer ring assembly and the inner ring are combined (refer to FIG. 22 as appropriate), the contact between the rolling element 3 of the outer ring assembly and the end surface of the inner ring can be surely prevented, and Similarly, the stoppers 4a and 4b need only be formed on one side.

  Further, in the first embodiment, since the recessed portion 13 and the projecting portion 23 prevent the pocket frame 20 from being press-fitted and fitted, the assembly work can be further reduced.

  Further, in Example 1, since the retaining of the pocket frame 20 is effective on either side of the inner and outer rings, the positioning strength of the pocket frame 20 against the centrifugal force can be increased during the operation of the radial bearing.

  Moreover, since the pocket frame 20 was provided for every hole 11 in Example 1, the single-piece | unit weight of the pocket frame 20 can be suppressed and the interference between the said fitting surfaces 12a and 12b and the fitting surfaces 22a and 22b can be suppressed. .

  Further, in the first embodiment, the same inner and outer rings and rolling elements 3 are used, and the fitting surfaces 12a, 12b, 22a, 22b, and the concave portions 13 and the convex portions 23, which are combinations of the cage body 10 and the pocket frame 20, are provided. Unless it changes, even if the other structure of the cage body 10 or the pocket frame 20 is changed, the pocket frame 20 or the cage body 10 that is the counterpart component can be used as it is.

  Further, in Example 1, since the material of the cage body 10 is relatively light and highly rigid carbon steel, and the material of the pocket frame 20 is relatively excellent in slidability but is made of an expensive high strength brass alloy, The cage main body 10 has the strength of the cage as a whole compared with the case where the cage is formed only of high-strength brass alloy while improving the slidability of the sliding portions 2a, 2b as compared with the case where the cage is formed only of carbon steel. In addition, the cage can be manufactured lighter and cheaper than when the cage is formed of only a high-strength brass alloy.

  Further, in Example 1, since the frame portion 21 is reinforced by the convex portion 23, the sliding portion 2a at the time of press fitting is reduced while the frame portion 21 formed with the sliding portions 2a and 2b is thinned as a whole. The deformation of 2b can be prevented, and the amount of expensive high-strength brass alloy used can be reduced.

  Further, in the first embodiment, by making the cage body 10 and the pocket frame 20 as separate members, these precisions can be managed separately, and the manufacture of the cage body 10 that requires relatively low accuracy is facilitated. . Example 1 only needs to manufacture only the pocket frame 20 with a high-strength brass alloy, and is suitable for a retainer for large bearings in combination with the above weight reduction.

  In Example 1, as described in the sixteenth embodiment, the sliding material 2a, 2b is more slidable than the case in which the pocket frame 20 is made of synthetic resin and the cage is formed of only synthetic resin. The strength of the cage can be improved while increasing.

  In the first embodiment, it is only necessary to improve the slidability of the sliding portions 2 a and 2 b, and it is not necessary to form the entire inner surface of the pocket 1 in the frame portion 21. For example, when it is desired to reduce the fitting depth of the frame portion 21 in the inner and outer diameter directions with respect to the hole 11, the sliding portions 2 a and 2 b are formed in the frame portion 21, and the circumferential end of the inner surface of the pocket 1 is the frame portion 21. And the inside of the hole 11 can be divided.

  Example 2 employs the third, fourth, sixth, and eighth embodiments together. FIG. 4 is a perspective view showing a state in which a part of the circumferential direction of Example 2 is extracted and the cage is assembled. FIG. 5A shows a cross-sectional view of the pocket of Example 2 cut along a radial plane. FIG. 5B shows a cross-sectional view of the pocket of Example 2 cut along an axial plane. FIG. 6 shows an overall perspective view of the second embodiment. Hereinafter, the difference from the first embodiment will be mainly described.

  As shown in FIGS. 4 to 6, a flat fitting surface 42 and a flange 43 are formed on the outer periphery of the frame portion 41 of the pocket frame 40. The cage main body 30 according to the second embodiment has a hook receiving portion 32 into which a hook 43 fits around the opening of each hole 31 on the outer diameter side.

  The stoppers 4a 'and 4b' are formed so as to restrict the rolling element 3 only to the outer diameter side.

  With the hole 31 of the cage body 30 facing the race of the inner ring (not shown), the pocket frame 40 is directed from the outer diameter side to the inner diameter side with respect to the cage body 30 with the rolling element 3 in the hole 31. As a result, the collar 43 fits into the collar receiving portion 32, the seat surface of the collar 43 sits on the collar receiving portion 32, and the pocket frame 40 is prevented from coming off to the inner diameter side. The pocket frame 40 is positioned on the cage body 30 by the contact between the fitting surface 43 of the frame portion 41 and the fitting surface formed on the inner periphery of the hole 31 and the fitting surface of the collar 43 and the collar receiving portion 32. Simultaneously with the above combination, the pocket 1 containing the rolling elements 3 is formed. During this combination, the stoppers 4 a ′ and 4 b ′ do not come into contact with the rolling elements 3.

  In the state where all the pockets 1 are formed, the circumferential grooves 44 formed in the collars 43 of the pocket frames 40 are arranged on the same circumference, and the circumferential grooves formed in the partition portion of the cage body 30. 33 is also arranged on the same circumference as the circumferential groove 44 of the flange 43. For this reason, it is possible to fit the ring member 51 into the circumferential grooves 33 and 44 that pass through a series on the same circumference with all the pockets 1 formed.

  An O-ring is adopted as the ring member 51. When the ring member 51 is fitted in the circumferential grooves 33, 44, the pocket frames 40 are prevented from coming off to the outer diameter side with respect to the cage body 30.

  As described above, the pocket frame 40 is prevented from coming off on the inner diameter side at the same time as being combined with the cage body 30, and is prevented from coming off on the outer diameter side by fitting the ring member 51. That is, the second embodiment can form a radial bearing retainer in which the pocket frame 40 is prevented from coming off on either side of the inner and outer rings.

  Moreover, since Example 2 does not have a convex part and a recessed part like Example 1, the combination of the pocket frame 40 can be performed lightly compared with Example 1. FIG.

  In the second embodiment, since the pocket frame 40 is prevented from coming off to the inner diameter side simultaneously with the combination of the pocket frames 40, there is no assembly process only for that purpose. On the other hand, in the second embodiment, all the pocket frames 40 are prevented from coming off to the outer diameter side at the same time simply by fitting the ring member 51, so that the pocket frames 40 are prevented from coming off to each individual like caulking. The assembly work can be saved.

  In the second embodiment, all the pocket frames 40 can be simultaneously tightened to the cage body 30 by the rubber elasticity of the ring member 51. Further, in the second embodiment, by using a general-purpose O-ring for the ring member 51, the procurement cost of the ring member 51 can be suppressed. In addition, since the second embodiment is excellent in the diameter expansion property of the ring member 51 made of an O-ring, it is easy to fit the ring member 51 into the circumferential grooves 33 and 44.

  In the second embodiment, the ring member 51 is fitted to the annular portions 52 and 52 on both sides to prevent all the pocket frames 40 from being detached. However, when the necessary retaining is obtained, only one side is provided. You can also Further, when there is a margin in the axial direction width of the annular portion 52, a plurality of circumferential grooves can be formed, and a ring member can be fitted into each groove. Further, the circumferential grooves 33 and 44 can be deepened, and a plurality of ring members can be fitted into one groove.

  Further, in a state where all the pockets 1 are formed, a cylindrical portion 53 is formed on the inner diameter of the annular portion 52 by the cage main body 30 and each pocket frame 40. For this reason, Example 2 can be used by an inner ring | wheel guide system. At this time, since the cylindrical portion 53 is formed on the inner diameter surface of the annular portion 52 on the side where the circumferential grooves 33 and 44 do not exist, the contact area of the inner ring with the cage guide surface is set to the first embodiment. Can be secured in the same way.

  Example 3 employs the third, fifth, sixth, and eighth embodiments together. FIG. 7 is a perspective view showing a state in which a part of the circumferential direction of Example 3 is extracted and the cage is assembled. FIG. 8A shows a cross-sectional view of the pocket of Example 3 cut along a radial plane. FIG. 8B shows a cross-sectional view of the pocket of Example 3 cut along an axial plane. FIG. 9 is an overall perspective view of the third embodiment. Hereinafter, the difference from the second embodiment will be mainly described.

  In Example 3, the circumferential grooves 62 and 63 for fitting the ring member 61 are passed through the inner diameter of the annular portion, the cylindrical portion 64 is formed on the outer diameter of the annular portion, and the ring member 61 is made of metal C The second embodiment is different from the second embodiment in that a concentric snap ring is formed.

  More specifically, the pocket frame 80 is positioned on the inner diameter side of the cage body 70 with the hole 71 of the cage body 70 facing the race of the outer ring (not shown) and the rolling element 3 is inserted in the hole 71. When they are combined from the outer diameter side toward the outer diameter side, the stoppers 4a and 4b formed on the frame part 81 so as to restrict the rolling element 3 only on the inner ring side do not come into contact with the rolling element 3 and the flange 83 of the frame part 81 Is fitted into the collar receiving portion 72 formed around the opening on the inner diameter side of the hole 71, and the pocket frame 80 is prevented from coming off to the outer diameter side. The pocket frame 80 is positioned on the retainer body 70 by the contact between the fitting surface 84 and the fitting surface formed on the inner periphery of the hole 71, and the fitting surface of the collar 83 and the collar receiving portion 72. At the same time, the pocket 1 containing the rolling elements 3 is formed. In the state where all the pockets 1 are formed, the circumferential grooves 63 formed in the collar 83 of each pocket frame 80 are arranged on the same circumference, and the circumferential grooves formed in the partition portion of the cage body 70. 62 is also arranged on the same circumference as the circumferential groove 63. When the ring member 61 is fitted into the circumferential grooves 62 and 63, the pocket frames 80 are prevented from coming off on the inner diameter side with respect to the cage body 70.

  As described above, the pocket frame 80 is prevented from coming off to the outer diameter side at the same time as being combined with the cage body 70, and is prevented from coming off to the inner diameter side by fitting the metal ring member 61. That is, the third embodiment can form a radial bearing retainer in which the pocket frame 80 is prevented from coming off on either side of the inner and outer rings.

  Further, in the third embodiment, all the pocket frames 80 can be pressed against the retainer main body 70 by the elasticity of the metal ring member 61 having excellent rigidity, and can be prevented from coming off to the inner diameter side. During operation of the radial bearing, the pocket frame 80 is pressed from the inner diameter side toward the outer diameter side by centrifugal force. Therefore, it is sufficient that the pocket frame 80 is prevented from coming off to the inner diameter side when the bearing is stopped and assembled. Such retaining can be dealt with by a ring member 61 made of a metal C-shaped concentric retaining ring.

  Further, in the third embodiment, by using a ring member as a general-purpose C-shaped concentric retaining ring for the ring member 61, the procurement cost of the ring member 61 can be suppressed. Moreover, since Example 3 employ | adopted the C-shaped concentric retaining ring, the circumferential direction groove | channel 63 of all the pocket frames 80 can be formed identically. By utilizing this, the pocket frame 80 is all the same part.

  In addition, since the cylindrical portion 64 is formed on the outer diameter of the annular portion, the third embodiment can be used in the outer ring guide method. At this time, the contact area of the outer ring with the cage guide surface is the same as that of the first embodiment. The same can be ensured.

  Example 4 employs the third, fourth, sixth, eighth, twelfth, thirteenth, and fourteenth embodiments together. FIG. 10 is a perspective view showing a state in which a part of the circumferential direction of Example 4 is extracted and the cage is assembled. Fig.11 (a) has shown sectional drawing which cut | disconnected the pocket of Example 4 by the radial plane. FIG. 11B shows a cross-sectional view of the pocket of Example 4 cut along an axial plane. FIG. 12 is an overall perspective view of the fourth embodiment. FIGS. 13A and 13B show the state in which the pocket frame of Example 4 is combined with the cage main body in stages in the same cross section as FIG. Hereinafter, the differences from the second embodiment will be mainly described, the same reference numerals are used for the same components, and the description thereof will be omitted.

  The fourth embodiment is different from the second embodiment in that two or more frame portions 101 are arranged in the circumferential direction in the pocket frame 100 combined with the cage main body 90.

  Specifically, the sliding portions 2 a and 2 b are formed on the inner periphery of the hole 91 of the cage main body 90. As described above, the sliding portions 2a and 2b are considered to be portions on the pitch circle diameter passing through the central axes of the rolling elements 3, 3... (PCD is indicated by a one-dot chain line in FIG. 11A). More specifically, including the range in which the rolling element 3 is elastically contacted around the PCD, the bearing internal clearance when setting the radial bearing internal clearance, and the clearance between the cage and the bearing ring The rolling element 3 further includes a range in which the rolling element 3 can come out of contact with the PCD.

  The stoppers 4 a ′ and 4 b ′ are formed on each frame portion 101 of the pocket frame 100. Each frame portion 101 has a portion that fits into a counterbore portion 92 formed on the inner periphery of the hole 91 of the cage main body 90.

  As shown in FIG. 13 (a), the number and arrangement of the frame portions 101 of the pocket frame 100 are set such that the rolling elements 3 are inserted into the holes 91 at both ends in a state where the rolling elements 3 are inserted into the corresponding number of holes 91. The moving body 3 is set so as not to spill.

  The pocket frame 100 has an even number of frame portions 101 and is formed symmetrically with respect to an axial plane including a bisector of the circumferential length thereof. For this reason, as shown in FIG. 13 (a), the rolling elements 3 are inserted into a number of holes 91 corresponding to the number of frame portions of the pocket frame 100, and the pocket frame 100 is moved from the outer diameter side toward the inner diameter side in this state. When combining, the frame holes of the respective frame portions 101 and the corresponding holes 91 cannot be directly overlapped. However, while the pocket frame 100 is combined with the cage main body 90, the frame portions 101 are aligned and the holes at both ends are aligned. The rolling elements 3 in 91 can be brought into uniform contact with each other. When these contacts are used to press each of the frame portions 101 at both ends to the rolling elements 3 in the corresponding holes 91, both sides in the circumferential direction of the pocket frame 100 are external as shown in FIG. 13 (b). Warps elastically on the radial side. The frame portions 101 at both ends of the row gradually slide on the cylindrical surface of the rolling element 3 due to the elastic deformation of the pocket frame 100, and the rolling element 3 gradually enters the frame holes. For this reason, the relative displacement in the axial direction between the pocket frame 100 and the cage main body 90 is restricted by the contact between the rolling element 3 and the frame portion 101. When the warp of the pocket frame 100 further proceeds, the protruding portions of the frame portions 101 at the both ends of the array are eventually counterbore portions 92 of the corresponding holes 91, as shown in FIGS. 11 (a) and 11 (b). Fits into. When the frame portions 101 at both ends of the arrangement are fitted, the other frame portions 101 in the middle of the arrangement naturally fit into the counterbore portions 92 of the corresponding holes 91. The pocket frame 100 is positioned on the cage main body 90 by these fitting portions. In this positioning state, the projecting portion of each frame portion 101 and the seating surface formed by the inner diameter ends of the arc portions 102 and 102 that connect the frame portions 101 on both sides thereof are the counterbore portion 92 and the annular portion of the cage main body 90. The pocket frame 100 is prevented from slipping to the inner diameter side by sitting and contacting between them. During the above combination, the stoppers 4 a ′ and 4 b ′ of all the frame portions 101 do not come into contact with the rolling elements 3. In FIG. 13, in order to make the drawing easy to see, all the rolling elements 3 are shown in a neutral position with respect to the pockets away from the inside of the hole 91, but actually, when the frame portion 101 is pressed, the rolling elements 3 are It is received inside the hole 91.

  As described above, in the fourth embodiment, the pockets containing the rolling elements 3 can be simultaneously formed by the number of the frame portions 101 arranged in the pocket frame 100, and the accuracy of all the fall stoppers 4a ′ and 4b ′ is ensured. be able to.

  When all the pocket frames 100 are combined, the pocket frame 100 forms the outer diameter of the cage. Since the circumferential grooves 103 formed in the circular arc part 102 of each pocket frame 100 are arranged on the same circumference, the ring member 51 is fitted into a series of circumferential grooves composed of the circumferential grooves 103, 103, 103. Can be worn.

  Further, in the fourth embodiment, while the frame portions 101 at both ends of the row gradually slide on the rolling element 3, they slide on the cylindrical surface parallel to the axial direction, as in the case of balls, tapered rollers, and spherical rollers. The contact between the frame portion and the rolling surface is not narrowed, and the pocket frame 100 is difficult to tilt. For this reason, Example 4 can perform the combination of the pocket frame 100 especially easily.

  Note that Example 4 includes three pocket frames 100. This is because when the number of pocket frames is two, when the pocket frames are combined with the cage main body 90 from the outer diameter side to the inner diameter side, the frame portions 101 at both ends are caught by the rolling elements 3, and the pocket frames are combined. This is because the number of pocket frames in Example 4 is more than three because it is difficult to increase the number of divisions in the circumferential direction to facilitate the combination and to suppress the number of parts. It is also possible to change it appropriately.

  Further, in the fourth embodiment, the sliding portions 2a and 2b are formed inside the hole 91 of the cage body 90, and the sliding portions 2a and 2b are deformed when pressed against the rolling elements 3 at both ends. The accuracy of the sliding parts 2a and 2b can be ensured. The configuration in which the pocket inner surface is divided into the inside of the hole 91 and the frame portion 101 can suppress an increase in the weight of the pocket frame 100 while forming the plurality of frame portions 101, so that the centrifugal force of the pocket frame 100 can be reduced and removed. Convenient to lighten the stop.

  In the fourth embodiment, as is clear from FIG. 11A, the sliding portions 2 a and 2 b including the PCD are not divided into the pocket frame 100 and the cage main body 90. There is no worry that the joint with the inner side of the roller contacts the rolling surface of the rolling element 3.

  Further, in the fourth embodiment, since the number of pocket frames 100 is smaller than the case where the pocket frames are provided for each pocket 1, an outer ring guide method in which the arc portion 102 of the pocket frame 100 slides on the cage guide surface of the outer ring. Even if it is used, there is an advantage that the cage guide surface is not easily worn by contact with the joint.

  Example 5 employs the third, fifth, sixth, eighth, twelfth, thirteenth, and fourteenth embodiments together. FIG. 14 is a perspective view showing a state in which a part of the circumferential direction of Example 5 is extracted and the cage is assembled. FIG. 15A shows a cross-sectional view of the pocket of Example 5 cut along a radial plane. FIG. 15B shows a cross-sectional view of the pocket of Example 5 cut along an axial plane. FIG. 16 is an overall perspective view of the fifth embodiment. Hereinafter, differences from the fourth embodiment will be mainly described, the same reference numerals are used for the same components, and the description thereof will be omitted.

  As shown in FIGS. 14 and 15, in the fifth embodiment, the pocket frames 120 can be combined with the cage main body 110 from the inner diameter side toward the outer diameter side, and the frame portions 121 with respect to the rolling elements 3 at both ends. 3 is elastically deformed on both sides in the circumferential direction of the pocket frame 120 to the inner diameter side so that all the frame parts 121 fit into the counterbore parts 112 of the holes 111 of the cage body 110, and are arranged on the same circumference. The fourth embodiment is different from the fourth embodiment in that each of the pocket frames 120 is prevented from coming off to the inner diameter side by fitting a ring member 61 made of a C-shaped concentric retaining ring into two circumferential grooves 122, 122, 122.

  Example 6 employs the seventh and ninth embodiments together. FIG. 17 is an overall perspective view of the sixth embodiment. FIG. 18 is a perspective view showing a state in which a part of the circumferential direction of Example 6 is extracted and the cage is assembled. Hereinafter, the difference from the first embodiment will be mainly described.

  As shown in FIGS. 17 and 18, the sixth embodiment is for a thrust cylindrical roller bearing in which pockets 130 are open on both side surfaces. The hole 141 of the cage main body 140 is formed so as to be open only on both side surfaces for use in a thrust bearing.

  The cage main body 140 can be formed by stamping a steel plate or machining. A rib may be appropriately formed on the inner and outer diameters of the cage main body 140 to improve the strength, or the partition of the cage main body 140 may be thinned.

  The pocket frame 150 is an integrally formed body using a material that is more slidable than the cage body 140.

  The frame portion 151 is opened toward the inner diameter side, and the rolling elements 131 and 131 are centered by the sliding portions 152a and 152b and the inner wall surface 153 that connects the sliding portions 152a and 152b on the outer diameter side. It can be held independently so that the axis is parallel to the radial plane.

  Of the inner surface of the pocket 130, the circumferential end portion formed in the partition is formed on an arc surface concentric with the central axis of the rolling element 131 in a bearing assembled state in order to adopt a rolling element guide system. For this reason, the sliding parts 152a and 152b with which the rolling elements 131 and 131 can come into contact during the bearing operation are all the arc surfaces. Both side edges of the sliding portions 152a and 152b that are formed as arcuate surfaces serve as stoppers that restrict the amount of rolling-out of the rolling elements 131 and 131 with respect to both sides of the inner and outer rings.

  The opening on the inner diameter side of the frame portion 151 is a slot 154 into which the rolling element 131 can be inserted in a non-contact manner in a posture in which the central axis is oriented in the radial direction. For this reason, when the rolling element 131 is inserted from the insertion port 154, there is no portion that becomes a resistance in the frame portion 151, and there is no deformation that detracts from the accuracy of the sliding portions 152a and 152b that also serve as a stopper. Accuracy is ensured.

  The outer side of the pocket frame 150 is a flat fitting surface that is press-fitted into the inside of the hole 141 of the cage main body 140. A seating surface 155 that sits on a stepped portion 142 attached to the inner periphery of the hole 141 is formed on a part of the fitting surface. In the sixth embodiment, the cage main body 140 and the pocket frame 150 can be combined in a state where the rolling elements 131 and 131 are put in double rows in the frame holes of the frame portion 151.

  When the rolling element 131, 131 is inserted into the frame hole of the frame portion 151 and the frame portion 151 is press-fitted into the inside of the hole 141 from one side surface to the other side surface of the cage body 140, The seat surface 155 sits on the step portion 142 of the hole 141, the press-fitting is stopped, and the pocket frame 150 is prevented from coming off only on the other side surface by the contact between the seat surface 155 and the step portion 142. At the same time, the pocket 130 containing the rolling elements 131 and 131 is formed. The inner wall surface on the inner diameter side of the pocket 130 is formed by the inner wall surface of the hole 141.

  The thrust cylindrical roller bearing provided with Example 6 described above is intended to receive only an axial load in one direction, and when used on the vertical axis, the centrifugal force acting on the pocket frame 150 acts in the pulling direction. Without being received by the cage main body 140. For this reason, even if the pocket frame 150 is configured to be prevented from coming off only on the other side surface, the pocket frame 150 receives from the rolling elements 131 and 131 via the weight of the cage main body 140 and the sliding portions 152a and 152b. By using the bearing cage in such a direction that the retaining surface 155 and the stepped portion 142 are effectively prevented from coming off against an axial load in one direction, it is possible to secure the position of the pocket frame 150 during the bearing operation. it can. In this way, the working conditions of Example 6 are limited compared to Example 1 above, but the convexity and concave parts are omitted by using the limitation, and the interference of press-fitting is suppressed. Can do.

  In the sixth embodiment, since the pocket frame 150 is provided for each pocket 130, the rolling elements 131 and 131 to be inserted into one pocket 130 are inserted into the frame hole of the frame portion 151 through the slot 154, and then the pocket frame 150 is directly added. Can be combined with the cage main body 140, and there is an advantage that the rolling elements 131 and 131 are not easily dropped from the slot 154 during the operation.

  Further, in the sixth embodiment, since the rolling elements 131 and 131 can be independently held by the frame portion 151 of the pocket frame 150, there is no need to perform assembly work with the hole 141 of the cage main body 140 facing the track. In addition, it is possible to configure a rolling element with a cage that holds all the rolling elements 131 independently. For this reason, Example 6 is suitable for an inner and outer ring separated type rolling bearing such as a thrust cylindrical roller bearing.

  In the sixth embodiment, during the bearing operation, the rolling elements 131 and 131 may be pressed against the inner wall surface on the outer diameter side of the pocket 130 by centrifugal force, but the inlet 154 is opened toward the inner diameter side. Since the inner wall surface on the outer diameter side is formed by the inner wall surface 153 of the pocket frame 150 having excellent slidability, the slidability with the end surface of the rolling element 131 can also be improved. The inner wall surface on the inner diameter side of the pocket 130 is composed of the cage main body 140, but there is no concern that the rolling element 131 is pressed during the bearing operation, and there is no problem even if the sliding property is low.

  Example 7 employs the seventh and tenth embodiments together. FIG. 19 is a perspective view illustrating a state in which a part of the circumferential direction of Example 7 is extracted and the cage is assembled. Hereinafter, the difference from the sixth embodiment will be mainly described.

  As shown in FIG. 19, the pocket frame 160 of Example 7 is configured as a two-divided body in which two divided pieces 161a and 161b are combined. A sliding part 152a is formed on the split piece 161a, and a sliding part 152b is formed on the split piece 161b, and the rolling elements 131 and 131 are sandwiched from both sides of the rolling surface by the split pieces 161a and 161b and held independently. It is done. In the state where the rolling elements 131 and 131 are sandwiched in this way, the two split pieces 161a and 161b form a frame portion in which the entire inner surface of the pocket 130 is formed.

  When the frame portion of the pocket frame 160 is press-fitted into the hole 141 of the cage body with the rolling elements 131 and 131 inserted in the frame holes formed by the two split pieces 161a and 161b, the seating surface 155 is brought into contact with the stepped portion 142. While coming into contact with and being prevented from coming off on the other side surface, the frame portion composed of the two split pieces 161a and 161b is fitted inside the hole 141 and is prevented from being separated.

  In the seventh embodiment, since the rolling elements 131 and 131 are sandwiched from both sides of the rolling surface by the sliding portions 152a and 152b that also serve as stoppers, the rolling elements 131 and 131 are not pushed into the frame holes. For example, in the seventh embodiment, the other divided piece 161b can be combined with the rolling elements 131 and 131 placed on the one divided piece 161a.

  Further, in Example 7, since the pocket frame 160 is provided for each pocket 130, the state in which the rolling elements 131 and 131 are sandwiched from both sides is held and held with fingers, and can be combined with the hole 141 of the cage body as it is. As a result of the combination, the frame portion composed of the two split pieces 161a and 161b fits inside the hole 141. Thus, the pocket 130 containing the rolling elements 131 and 131 is formed simultaneously with the combination of the pocket frame 160, and both the split pieces 161a are formed. 161b can be separated and stopped so as to keep the frame portion.

  In the seventh embodiment, the rolling element 131 is not pushed into the frame hole without the insertion hole as in the sixth embodiment, and the pocket frame 160 can improve the slidability of the entire pocket inner surface.

  Further, in the seventh embodiment, even if the sliding portions 152a and 152b constitute most of the circumferential end of the cage partition, the rolling elements 131 are sandwiched from both sides in the circumferential direction. There is no seam in 152a, 152b, and the rolling surface can be protected.

  FIG. 20 shows an eighth embodiment that is a modification of the seventh embodiment. As shown in FIG. 20, in the eighth embodiment, the rolling elements 131 and 131 are sandwiched from the roller end face side by the divided pieces 171a and 171b forming the frame portion of the pocket frame 170 in the seventh embodiment. It is different in point.

  In Example 8, in order to sandwich the rolling elements 131 and 131 from the roller end face side, that is, to sandwich the rolling elements 131 and 131 in the double row arrangement direction, the joints of the split pieces 171a and 171b are sliding portions 152a and 152b. It is possible to pass through a position that does not come into contact with the respective rolling surfaces of the rolling elements 131 and 131 during the bearing operation. In the eighth embodiment, the divided pieces 171a and 171b are passed through portions that do not come into contact with the rolling elements 131 and 131 by chamfering of the roller end surfaces facing the rolling elements 131 and 131.

  As shown in Examples 7 and 8, the direction in which the rolling element 131 is sandwiched from both sides can be set as appropriate as long as the retaining portion of the two split pieces is not pressed against the rolling element between them.

  Example 9 employs the seventh and eleventh embodiments together. FIG. 21 is a perspective view showing a state in which a part of the circumferential direction of Example 9 is extracted and the cage is assembled. Hereinafter, differences from the eighth embodiment will be mainly described.

  As shown in FIG. 21, the ninth embodiment is for a single-row thrust cylindrical roller bearing, and a sliding portion 182a that also serves as a stopper for restricting the rolling element 131 to both sides of the inner and outer rings of the pocket frame 180, The present embodiment is different from the eighth embodiment in that the rolling element 131 can be independently held by the frame portion 181 including the 182b, and the rolling element 131 can be pushed into the frame hole of the frame portion 181. Along with the single row, the sliding portions 182a and 182b are halved in the length along the central axis of the rolling element 131.

  In the ninth embodiment, after the rolling element 131 is pushed into the frame hole of the frame part 181 using elastic deformation as in the prior art, the frame part 181 is combined with the inside of the hole 191 of the cage body by press fitting. At the same time, the pocket frame 180 can be prevented from coming off to the other side surface by the seating surface 183 and the stepped portion 192.

  In the ninth embodiment, the sliding property can be improved by forming the sliding portions 182a and 182b as separate members, and the pocket frame 180 can be formed as a single part, and a rolling element with a cage can be realized. In the ninth embodiment, the single row is changed. When the double row is used, care must be taken so that the previously-rolled rolling element does not hit the subsequent rolling-element. However, it is possible to change the ninth embodiment to a double row.

  In addition, the structure of each part of said each Example can be suitably changed according to the effect of each said embodiment calculated | required and the specification of a holder | retainer. For example, in the seventh to ninth embodiments, the thrust bearing is described as an example. However, the configuration in which the rolling elements can be used as a single cage by using the frame portion is also applied to the radial bearing as in the first to third embodiments. can do. Moreover, the structure which concerns on the convex part and recessed part of Example 1 can also be applied for thrust bearings like Example 7 thru | or 9. In addition, in the case where the object is only to ensure the accuracy of retaining, it is possible to use the same material for the cage body and the pocket frame in each embodiment. In addition, when the purpose is only to reduce the cost of the cage while improving the slidability of the sliding portion from the cage body, a sliding portion may be formed on the frame portion in Examples 4 and 5. In other embodiments, it is also possible to form only a stopper in the frame portion. In the second to ninth embodiments, when the configuration in which the sliding portion is formed in the frame portion is employed, the pocket frame can be formed from a copper-based metal or a synthetic resin as in the first embodiment.

The principal part disassembled perspective view of Example 1 a is a sectional view of the pocket of Example 1 cut along a radial plane, and b is a sectional view of the pocket of Example 1 cut along an axial plane. Overall perspective view of Example 1 The principal part disassembled perspective view of Example 2 a is a sectional view of the pocket of Example 2 cut along a radial plane, and b is a sectional view of the pocket of Example 2 cut along an axial plane. Overall perspective view of Example 2 The principal part disassembled perspective view of Example 3 a is a sectional view of the pocket of Example 3 cut along a radial plane, and b is a sectional view of the pocket of Example 3 cut along an axial plane. Overall perspective view of Example 3 The principal part disassembled perspective view of Example 4 a is a sectional view of the pocket of Example 4 cut along a radial plane, and b is a sectional view of the pocket of Example 4 cut along an axial plane. Overall perspective view of Example 4 a is an operation diagram showing the way of combining the pocket frame of Example 4 with the cage body, and b is an operation diagram showing a state in which the pocket frame is further brought closer to the cage body from the state of a. The principal part disassembled perspective view of Example 5 a is a sectional view of the pocket of Example 5 cut along a radial plane, and b is a sectional view of the pocket of Example 5 cut along an axial plane. Overall perspective view of Example 5 Overall perspective view of Example 6 a is a main part exploded perspective view of Example 6, b is a sectional view taken along line bb of a The principal part disassembled perspective view of Example 7 The principal part disassembled perspective view of Example 8 a is an exploded perspective view of the main part of Example 9, and b is a sectional view taken along line bb of a. Action diagram showing bearing assembly work using conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,130 Pocket 2 Partition 2a, 2b, 152a, 152b, 182a, 182b Sliding part 3,131 Rolling body 4a, 4b, 4a ', 4b' Fall prevention 5,52 Annular part 10,30,70,90,110 , 140 Cage body 11, 31, 71, 91, 111, 141 Holes 12a, 12b, 22a, 22b, 42, 84 Fitting surface 13 Recess 20, 40, 80, 100, 120, 150, 160, 170, 180 Pocket frame 21, 41, 81, 101, 121, 151 Frame portion 23 Convex portion 32, 72 鍔 receiving portion 33, 44, 62, 63, 103, 122 Circumferential groove 43, 83 鍔 51, 61 Ring member 53, 64 Cylindrical portion 92, 112 Counterbore portion 102 Arc portion 142 Step portion 154 Entrance 155 Seat surface 161a, 161b, 171a, 171b Divided pieces

Claims (18)

In a bearing retainer provided with a sliding portion formed in a partition between pockets adjacent in the circumferential direction, and a stopper that regulates the amount of rolling-out of the rolling element that has entered the pocket,
A cage body in which holes facing the raceways of the inner and outer rings are arranged in the circumferential direction, and a pocket frame in which at least one of the sliding portion for one pocket and the stopper is formed in the frame portion; The pocket frame is positioned on the retainer body by combining the cage body and the pocket frame with the rolling element inserted into the frame hole or the hole, and the pocket containing the rolling element is formed. A bearing retainer characterized by being made.   The pocket frame is provided for each pocket, the sliding part is formed in the frame part, and a convex part protruding from the fitting surface is formed on one of the frame part and the inside of the hole, Forming a recess recessed from the fitting surface, and mounting the frame portion inside the hole, the projection enters the recess and the pocket frame is prevented from being detached from the retainer body. The bearing retainer according to claim 1, which is configured as described above.   The bearing cage according to claim 2, wherein a convex portion is formed outside the frame of the sliding portion.   The hole is formed so as to open to the inner and outer diameters of the cage body, and the pocket frame is combined with the cage body from one side to the other side of the inner and outer diameters to form a seat formed on the pocket frame. The surface is seated on the cage body so as to be prevented from coming off to the other side of the inner and outer diameters, and circumferential grooves formed in each pocket frame in a state where all the pockets are formed are arranged on the same circumference, 2. The bearing according to claim 1, wherein a ring member is fitted into the circumferential grooves so that each pocket frame is prevented from coming off on one side of the inner and outer diameters with respect to the retainer body. Cage.   The bearing retainer according to claim 4, wherein the circumferential groove is passed through an outer diameter, and the ring member is an O-ring.   The bearing retainer according to claim 4, wherein the circumferential groove is passed through an inner diameter, and the ring member is a metal C-shaped concentric retaining ring.   The bearing cage according to any one of claims 4 to 6, wherein a bearing ring guide system using the inner and outer diameter bearing rings on the other side is employed.   The hole of the cage body is formed so as to be open on both side surfaces, the pocket frame is provided for each pocket, and the drop that restricts the rolling elements with respect to both sides of the sliding portion and the inner and outer rings. A seating surface formed on the pocket frame by forming the rolling element so as to be able to be held independently by the frame portion including a stopper, and mounting the frame portion on the inner side of the hole from one side surface toward the other side surface. 2. The bearing cage according to claim 1, wherein the pocket frame is prevented from coming off only on the other side surface by contact between the seat surface and the cage body. .   The hole is formed so as to open to the inner and outer diameters of the cage main body, the stopper for restricting the rolling element is formed only on one side of the inner and outer rings in the frame portion, and the rolling element is formed in the hole. The stopper is not in contact with the rolling element while the pocket frame is combined with the cage main body from one inner diameter side to the other side in the inserted state. The bearing retainer according to any one of 7.   The pocket frame is formed as an integrally formed body capable of holding the rolling element independently by the frame part including the stopper that restricts the rolling element with respect to both sides of the inner and outer rings, and the rolling element is disposed on the frame part. The bearing cage according to any one of claims 1 to 8, wherein a slot that can be inserted in a non-contact manner is opened.   The pocket frame is provided for each pocket, and the frame portion including the stopper that restricts the rolling element with respect to both sides of the inner and outer rings is a two-part body that can be held independently by sandwiching the rolling element from both sides. The frame body is fitted inside the hole to be separated and separated by combining the cage body and the pocket frame with the rolling element inserted into the frame hole of the frame part. The bearing retainer according to any one of claims 1 to 8.   The pocket frame is formed as an integrally formed body capable of holding the rolling element by the frame part including the stopper that restricts the rolling element with respect to both sides of the inner and outer rings, and the rolling element is a frame of the frame part. The bearing retainer according to any one of claims 1 to 8, wherein the bearing retainer can be pushed into the hole.   In the pocket frame, two or more frame portions are formed so as to be arranged in a circumferential direction, and the drop portion that restricts the rolling elements only on one side of the inner and outer rings is formed on the frame portion, and the 2 The pocket frame can be combined with the cage body from one side of the inner and outer diameters in a state where the rolling elements are inserted in the number of the holes corresponding to the above-described frame portions, and all the drops are dropped between the combinations. Stops do not come into contact with the rolling elements, and each of the frame portions at both ends is pressed against the rolling elements in the corresponding holes, and both sides in the circumferential direction of the pocket frame are elastically warped to one side of the inner and outer diameters. Each of the frame portions fits inside the corresponding row of holes by causing the pocket frame to be positioned on the cage body by the fitting portion inside each frame portion and the holes. Item 9. The bearing cage according to any one of Items 4 to 8.   The bearing retainer according to claim 13, wherein the sliding portion is formed inside a hole of the retainer body.   The bearing retainer according to claim 13 or 14, wherein the rolling element is a cylindrical roller.   The sliding part is formed in the frame part, the material of the cage body is made of an iron-based metal, and the material of the pocket frame is made of a copper-based metal. The bearing retainer described in 1.   The slide part is formed in the frame part, the material of the cage body is made of an iron-based metal, and the material of the pocket frame is made of a synthetic resin. The bearing cage described.   A roller bearing comprising the bearing retainer according to any one of claims 1 to 17.

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