JP2021515145A - Roller cages and bearings that maintain high roll parallelism - Google Patents

Abstract

The present invention includes an annular cage body, an elastic urging member and a gap holding member attached to the cage body, and a plurality of gap holding members are formed along the circumferential direction of the cage body. A plurality of position limiting holes are provided side by side on the inner ring surface or the outer ring surface of the torus, and are installed at intervals in the circumferential direction of the cage body on the outer peripheral surface of the cage body. Discloses a torus cage that maintains a high degree of torus parallelism, to which at least one urging member that elastically presses the torus along the circumferential direction is fixed to the inner wall of the torus. The rolling element cage of the present invention guarantees that the rolling element always maintains high-precision axial parallelism during transmission, and minimizes the occurrence of noise, vibration, damage, etc. during operation of the equipment. Each rolling element installed in the axial direction is in a state of high-precision axial parallelism with respect to the axial core line, and the rolling element freely rolls in the gap between the drive wheel and the driven wheel. , Rolling transmission, greatly extending the service life of the bearing. [Selection diagram] Fig. 5

Description

The present invention relates to the technical fields of mechanical transmission and transmission, and particularly to rolling element cages and bearings that maintain high rolling element parallelism.

In the mechanical transmission industry all over the world, the structural phenomenon of applying "a rolling element parallel to the axis of low precision" is a fundamental obstacle that constrains the development of industrial technology.

Here, the "rolling element parallel to the axis" means a conventional mechanical transmission structure, for example, in a similar structure such as an overrunning clutch or a bearing, the torque is transmitted from the drive wheels to the driven wheels, or the drive wheels. In the process of rotating with respect to the driven wheels, the axis of the rolling element, which is between the driving wheels and transmits torque or holds a gap between the driving wheels and the driven wheels, is the transmission shaft. This means that it must be parallel to and not deflected, such rolling elements generally appear in the form of rollers, wedge-shaped blocks, etc., and ideally in the same product, these The longitudinal direction (axial core line direction) of the rolling elements must match the axial directions of the driving wheels / driven wheels, and thus each rolling element transmits torque or performs torque transmission in the transmission process of the driving wheels / driven wheels. The action involved in transmission can be guaranteed.

However, the manufacturing accuracy of the driving wheel and the driven wheel is very high, and even if the radial and axial dimensions of both are exactly matched with the rolling element, such a rolling element is used in the actual mechanical transmission process. Tilts axially and is no longer parallel to the axis of transmission without any warning, so that a single rolling element is locally subjected to stress concentration and between each rolling element. The forces do not match, which causes the stress to be uneven throughout the transmission structure, which is expressed by local wear, deformation, crushing, etc., causing noise, vibration, damage, etc., and significantly shortening the useful life of the transmission structure. ..

Currently, there are several designs on the market that improve the axial parallelism of these rolling elements, and the most typical design is to design a rolling element cage in the transmission structure, the purpose of which is to design each rolling element. The axial directions are matched, however, since the cage is not fixed and floats between the drive wheel and the driven wheel, the position of the cage itself cannot be accurately fixed, and the rolling element Accurate axial parallelism cannot be achieved. Such drawbacks are more pronounced especially in overrunning clutches and basic transmission components such as high speed, heavy load bearings.

In an ideal state, each rolling element installed in the axial direction is in a state of high-precision axial parallelism with respect to the axial core line, and the rolling element freely rolls in the gap between the drive wheel and the driven wheel. However, if each rolling element installed in the axial direction cannot be parallel with high precision, the operating state in the gap between the driving wheel and the driven wheel during operation is forced rolling. It becomes a transmission.

As shown in FIG. 1, it is a stress schematic diagram of a conventional truck bearing, in which the bearing includes an inner ring A, an outer ring B, a roller C and a roller cage D, and the inner ring A of the bearing is on a fixed central axis. The outer ring B is attached and does not rotate, the outer ring B rotates clockwise, and the inner ring A applies a constant pressure to the outer ring B by the lower roller C due to the gravity action of the truck, and the upper roller C , It becomes idling without receiving pressure, the position of the roller holder D itself is not constrained, the size of the position limiting hole of the roller holder D accommodating the roller C is also larger than that of the roller C, and the roller C is positioned. Since it does not receive the actual binding force in the circumferential direction in the hole, both ends of the hole are in a state of arbitrarily swinging, and when the roller C is in an upward idling state, it swings arbitrarily when no pressure is applied, and the outer ring If it goes downward in the process of rotating with B, it is not completely parallel to the axial direction of the bearing. Therefore, if the inner ring A and outer ring B are pressed at the same time in the rotation process, forced pressing and rolling transmission is transmitted. When the roller C is generated and enters the lowermost position, the pressing force received is maximized. In an ideal state, the roller C is in line contact with the inner ring A and the outer ring B, and when the roller C is in a swinging state, the roller C and the outer arc surface of the inner ring A are at one point (closer to the center of the roller). Contact point) Contact state and receive force, roller C and outer ring B inner arc surface are in contact state at two points (contact points near both ends of the roller) and receive force, that is, "pressing in forced state" "Rolling transmission" occurs, and typically, the larger the swing width at both ends of the roller C, the greater the pressing force that both ends receive within the limited radial gap, causing noise, vibration, and damage. As the size increases, wear and damage to the inner ring A and the outer ring B of the bearing also increase.

After being used for a certain period of time, such bearings, on the one hand, undergo long-term pressing and rolling transmission, which causes phenomena such as roller deformation, serious wear, and crushing, and on the other hand. , The inner ring and outer ring of the bearing are pressed abnormally for a long period of time, and inevitably irregular indentations, indentations, etc. appear, and the operating gap of the rollers further increases and becomes an irregular gap. The axial alignment accuracy of the rollers is further reduced, the bearing breakage process is faster, which generally shortens the service life of conventional bearings, and the roller cages do not actually play a significant role.

In view of the lack of prior art, the present invention ensures that the rolling elements maintain high precision axial parallelism even during operation, significantly improves the operational stability and reliability of the structure, and reduces noise. Provided are a rolling element cage and a bearing that maintain a high rolling element parallelism, which can significantly extend the service life of the bearing.

In order to achieve the above object, the present invention employs the following technical solutions.

The rolling element cage that maintains high rolling element parallelism includes an annular cage body, an elastic urging member and a gap holding member attached to the cage body, and there are a plurality of the gap holding members. It is arranged side by side on the inner ring surface or the outer ring surface of the cage body along the circumferential direction of the cage body, and is installed on the outer peripheral surface of the cage body at intervals in the circumferential direction of the cage body. A plurality of the position limiting holes are opened, and the position limiting holes extend along the axial direction of the cage body and pass through a roller-shaped rolling element to be accommodated, and the inner wall of each of the position limiting holes is accommodated. At least one of the urging members that elastically presses the rolling element along the circumferential direction is fixed to the.

As one embodiment, a groove for fitting the gap holding member is provided on the inner ring surface or the outer ring surface of the cage body, and the gap holding member is rotatably installed in the groove. And the diameter is larger than the depth of the groove.

In one embodiment, the grooves are annular and the gap holding members are closely arranged in the circumferential direction of the grooves.

In one embodiment, there are at least two grooves, and the two grooves are installed at intervals in the axial direction of the cage body.

In one embodiment, the cage body comprises two annular positioning rings that are spaced apart from each other and a plurality of connecting beams that are connected between the two positioning rings, the groove. , The position limiting hole is formed between the two adjacent connecting beams, which are formed on the inner ring surface or the outer ring surface of the positioning ring, and one of the urging members is fixed to each of the connecting beams.

In one embodiment, two of the urging members are fixed to the inner wall of each of the position limiting holes, and the two urging members in each of the position limiting holes are respectively in the axial direction of the cage body. The rolling elements are pressed at two different points.

In one embodiment, the gap holding member is a ball or roller.

In one embodiment, each of the position limiting holes includes a first inner wall and a second inner wall facing each other in the rotational direction of the cage body, and the urging member is the first inner wall of each of the position limiting holes. It is installed on the inner wall and the free end extends toward the second inner wall.

In one embodiment, the first inner wall and the second inner wall of each position limiting hole are parallel to each other.

The present invention includes an inner ring, an outer ring, a rolling element, and a rolling element retainer that maintains a high degree of parallelism of the rolling element. There are a plurality of the rolling elements, and the rolling element can be rolled between the inner ring and the outer ring. A rolling element cage that is installed and maintains the high rolling element parallelism is installed between the inner ring and the outer ring, and the gap holding member is placed between the cage body and the outer ring surface of the inner ring or the said. It is rotatably installed between the cage body and the inner ring surface of the outer ring, the rolling element is housed in the position limiting hole, and is elastically attached to the cage body by the action of the urging member. Another object is to provide bearings that abut.

The rolling element cage of the present invention guarantees that the rolling element always maintains high-precision axial parallelism during transmission, and minimizes the occurrence of noise, vibration, damage, etc. during operation of the equipment. Each rolling element installed in the axial direction is in a state of high-precision axial parallelism with respect to the axial core line, and the rolling element freely rolls in the gap between the drive wheel and the driven wheel. , Rolling transmission, stress in ideal condition is realized, and the service life of the bearing is greatly extended.

It is a stress schematic diagram in the process of using the heavy load bearing of the prior art. It is structural decomposition schematic diagram of the bearing which concerns on embodiment of this invention. It is a structural schematic diagram of the bearing which concerns on embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line KK of FIG. FIG. 4 is a cross-sectional view taken along the line MM in FIG. It is a structural decomposition schematic diagram of the rolling element cage which concerns on embodiment of this invention. It is structural decomposition schematic diagram of another bearing which concerns on embodiment of this invention. It is a structural schematic diagram of another bearing which concerns on embodiment of this invention. FIG. 8 is a cross-sectional view taken along the line K1-K1 of FIG. 9 is a cross-sectional view taken along the line M1-M1 of FIG.

In the present invention, the terms "provide," "install," and "connect" should be broadly understood. For example, it may be a fixed connection, a removable connection or an integral structure, a mechanical connection or an electrical connection, a direct connection or an indirect connection by an intermediate medium, or two devices, elements or It may be an internal communication between the components. Those skilled in the art can understand the specific meanings of the above terms in the present invention depending on the specific circumstances.

Also, "top", "bottom", "left", "right", "top", "bottom", "clockwise", "counterclockwise", "inside", "outside", "middle", "middle" The orientation or positional relationship indicated by "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are primarily intended to better describe the present invention and its embodiments, requiring the devices, elements or components shown to have a particular orientation or to be constructed and operated in a particular orientation. It does not limit that there is.

In addition, the above-mentioned partial terms may have other meanings other than indicating the orientation or the positional relationship, and for example, the term "above" may indicate some dependency relationship or connection relationship in some cases. Those skilled in the art will be able to understand the specific meanings of these terms in the present invention depending on the specific circumstances.

In order to clarify the object, technical solution and advantage of the present invention, the present invention will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are merely interpretations of the present invention and are not intended to limit the present invention.

The rolling element cage according to the present invention has an annular cage main body, an elastic urging member and a gap holding member attached to the cage main body, and each of the crevice holding member and the urging member is present. The gap holding members are arranged side by side on the inner ring surface or the outer ring surface of the cage body along the circumferential direction of the cage body, and the outer peripheral surface of the cage body is spaced apart from each other in the circumferential direction of the cage body. A plurality of position limiting holes installed are opened, and the position limiting holes extend along the axial direction of the cage body and pass through a roller-shaped rolling element to be accommodated, and the inner wall of each position limiting hole is accommodated. At least one urging member is fixed to the, and the free end of the urging member extends toward the opposite inner wall, and after assembling the rolling element into the position limiting hole, is positioned along the circumferential direction. Elastically presses the rolling element in the limiting hole. All urging members extend from the same side inner wall of each position limiting hole in the direction of rotation of the cage body toward the opposite inner wall (eg, from upstream to downstream in the clockwise direction). Put out). Here, "upstream" and "downstream" are two relative directions on the rotation path in the rotation direction, and in the rotation direction, the circumferential movement direction from "upstream" to "downstream" is rotation. Match the direction.

After the rolling element cage is assembled in the bearing, the rolling element cage is located between the relative rotatable inner ring and the outer ring on the bearing, and the clearance holding member rolls the back surface of the inner ring or the outer ring. The accuracy of the position limitation with the inner ring or the outer ring is ensured, and the rolling element cage does not move arbitrarily. At the same time, the roller rolling element assembled in the rolling element cage receives the elastic urging force of the urging member, and specifically, the roller rolling element above the bearing is not subjected to the pressure of the outer ring and is upstream. Due to the action of the urging force of the urging member, no rolling or slight rolling occurs due to contact with the inner wall downstream of the position limiting hole, and these roller rolling elements are in close contact with the inner wall downstream of the position limiting hole. The roller rolling element, which is constrained in the circumferential direction and is in an absolute axial parallel state, receives the pressing force of the inner ring and the outer ring at the same time and rolls so as to coincide with the rotation direction of the outer ring. When the upper roller rolling element moves to the lower part of the bearing with the rolling element cage, the roller rolling element receives the pressing force of the inner ring and the outer ring at the same time, and the urging member is compressed. The rolling element can disengage from the inner wall downstream of the position limiting hole and roll without being constrained in the circumferential direction, and the roller rolling element can move in the exact axial direction before disengaging from the inner wall downstream of the position limiting hole. Since it is in the urged state, high axial accuracy can be maintained in the subsequent rolling process.

As shown in FIGS. 2 to 5, in the present embodiment, the rolling element cage 30 that maintains high rolling element parallelism is mainly an annular cage body 31 and elasticity attached to the cage body 31. There are a plurality of gap holding members 33 including the urging member 32 and the gap holding member 331, and they are arranged and held side by side on the inner ring surface or the outer ring surface of the cage main body 31 along the circumferential direction of the cage main body 31. After the vessel body 31 is attached to the inner ring 10 or the outer ring 20 of the bearing, the gap holding member 33 arranged in the circumferential direction can hold a highly accurate gap between the inner ring or the outer ring of the bearing and the cage body 31. It does not affect the rotation in the circumferential direction. Here, it may be a ball or a roller.

As shown in FIGS. 5 and 6, specifically, a plurality of position limiting holes 312 installed at intervals in the circumferential direction of the cage main body 31 are opened on the outer peripheral surface of the cage main body 31. The position limiting hole 312 extends along the axial direction of the cage main body 31 to pass and accommodate the roller-shaped rolling element 40, and the inner wall of each position limiting hole 312 has a rolling element along the circumferential direction. At least one urging member 32 that elastically presses the 40 is fixed.

The width of the position limiting hole 312 (that is, the dimension along the circumferential direction of the cage body 31) is slightly larger than the radial dimension of the rolling element 40, and the longitudinal direction of the position limiting hole 312 is the cage body. It is the same as the axial direction of 31, the depth direction of the position limiting hole 312 is the radial direction of the cage main body 31, and each position limiting hole 312 is the first inner wall facing in the rotation direction of the cage main body 31. And a second inner wall, the urging member 32 is installed in the first inner wall of each position limiting hole 312, and the free end extends toward the second inner wall, and the first of the position limiting holes 312. Since the inner wall and the second inner wall of the above are parallel to each other and both are parallel to the depth direction of the position limiting hole 312, that is, perpendicular to the width direction of the position limiting hole 312, the rolling element 40 is positioned. Reliable position restriction is achieved by receiving a completely vertical circumferential urging force in the hole 312, and the first inner wall of each position limiting hole 312 is located upstream / downstream of the second inner wall.

Preferably, the position limiting holes 312 are uniformly arranged in the circumferential direction of the cage body 31, one rolling element 40 is mounted in each position limiting hole 312, and the rolling element 40 is in the rolling element cage 30. It matches the number of position limiting holes 312. The rolling elements 40 in each position limiting hole 312 simultaneously receive at least two elastic pressing forces in the same direction from the urging member 32. For example, one urging member 32 may simultaneously press at least two different parts of the rolling element 40 in the longitudinal direction, and the two urging members 32 are fixed to the inner wall of each position limiting hole 312 to limit each position. The two urging members 32 in the hole 312 may each act on two different parts of the rolling element 40 in the longitudinal direction to press the rolling element 40.

A groove 311 for fitting the gap holding member 33 is provided on the inner ring surface or the outer ring surface of the cage main body 31, and the gap holding member 33 is rotatably installed in the groove 311 and has a groove in diameter. Since it is larger than the depth of 311 so, a part of the gap holding member 33 projects out of the groove 311. Here, the grooves 311 are annular, and the gap holding members 33 are closely arranged in the circumferential direction of the grooves 311. There are at least two grooves 311 and the two grooves 311 are in the axial direction of the cage body 31. The cage body 31 maintains the axial balance in the rotation process, and the two grooves 311 are preferably provided at both ends of the cage body 31 in the axial direction, and the position is restricted. It facilitates the opening of the hole 312 and the attachment of the gap holder 33.

In one embodiment, the cage body 31 includes two annular positioning rings 3a that are spaced apart from each other and a plurality of connecting beams 3b that are connected between the two positioning rings 3a. The 311 is formed on the inner ring surface or the outer ring surface of the positioning ring 3a, a position limiting hole 312 is formed between two adjacent connecting beams 3b, and one urging member 32 is fixed to each connecting beam 3b.

Further, the urging member 32 of this embodiment is a leaf spring, and positioning grooves P having two circumferences at intervals are provided on the outer surface of the connecting beam 3b of the cage main body 31, and one end of the urging member 32. Is wound around the surface of the connecting beam 3b and fitted in the positioning groove P, and the free end of the urging member 32 extends toward the inner wall on the opposite side of the position limiting hole 312, thus positioning. The limiting hole 312 is narrower, the position limiting hole 312 is designed more, more rolling elements 40 can share more pressing force, and the position limiting hole 312 is in the radial direction of the rolling element 40. It is even closer to the radial dimension of the and further helps to improve the axial parallelism. In other embodiments, compression springs, torsion springs, and the like may be used instead of the urging member 32.

Further, the present invention includes an inner ring 10, an outer ring 20, a rolling element retainer 30, and a rolling element 40, and there are a plurality of rolling elements 40, which are rotatably installed between the inner ring 10 and the outer ring 20 to hold the rolling element. The vessel 30 is installed between the inner ring 10 and the outer ring 20, and the gap holding member 33 is placed between the cage main body 31 and the outer ring surface of the inner ring 10 or between the cage main body 31 and the inner ring surface of the outer ring 20. Further, a bearing having the rolling element retainer 30 which is rotatably installed, the rolling element 40 is housed in the position limiting hole 312, and elastically abuts on the cage body 31 by the action of the urging member 32. provide.

The distance between the inner ring surface and the outer ring surface of the cage body 31, that is, the wall thickness of the cage body 31 is smaller than that of the rolling element 40, and the rolling element 40 is located in the position limiting hole 312, and It can roll to the outer surface of the inner ring 10 and the inner surface of the outer ring 20.

As shown in FIGS. 2 to 6, the gap holding member 33 is rotatably installed on the inner ring surface of the cage body 31, and the groove 311 is opened on the inner ring surface of the cage body 31 to form a gap. The holding members 33 are arranged in the groove 311 at intervals, chamfered surfaces 10S are installed at both ends of the inner ring 10, and when the rolling element cage 30 is assembled to the inner ring 10 of the bearing, the gap holding member 33 becomes , Located between the chamfered surface 10S and the groove 311. When the rolling element cage 30 is attached to the inner ring 10, each rolling element 40 is elastically attached to the second inner wall of the position limiting hole 312 by the urging member 32 by attaching the rolling element 40 into each position limiting hole 312. Assembly is completed when the outer ring 20 is brought into contact with the rolling element cage 30 and the position is restricted with respect to the axial direction of the bearing.

As one position limiting mode of the bearing end surface, the bearing can further include a collar 50 and a retaining ring 60, and a locking groove 200 for locking the collar 50 is provided on the inner surface of one end of the outer ring 20. After the outer ring 20 is fitted onto the rolling element cage 30, the retaining ring 60 is first inserted into the outer ring 20, the collar is further locked in the locking groove 200, and the cage body 31 is axially received by the retaining ring 60. Axial position limitation is realized.

Hereinafter, the operating state of the rolling element 40 will be analyzed in the bearing pressure receiving process. Here, a situation in which the inner ring 10 of the bearing does not rotate and the outer ring 20 rotates clockwise will be described as an example. Note that "the inner ring 10 does not rotate" here means a state of motion with respect to the outer ring 20, and the outer ring 20 may not rotate and the inner ring 10 may rotate during actual operation.

The high-precision shaft core wire cage of the present invention is particularly suitable for a heavy load bearing of a linear contact rolling element. As shown in FIG. 5, the inner ring 10 receives downward pressure, and the outer ring 20 of the bearing receives a pressure receiving surface ( For example, the outer ring 20 rotates clockwise while applying a pressure perpendicular to the floor surface). In this process, it is considered that the inner ring 10 is slightly eccentric to the pressure receiving surface, and the rolling element 40 above the axis X of the bearing is not subjected to the vertical pressure of the inner ring 40, and the pressure is not received. Is mainly applied intensively to the rolling element 40 below the axis X of the bearing, and the rolling element 40 below the axis X of the bearing synchronizes clockwise by pressing the inner ring 10 and the outer ring 20. Roll. The roller rolling element 40 above the axis X of the bearing does not receive the pressure of the outer ring 20 and hits the inner wall (second inner wall) downstream of the position limiting hole 312 by the action of the urging force in the clockwise direction. No rolling or slight rolling occurs when they are in contact with each other, and these roller rolling elements 40 are in close contact with the inner wall downstream of the position limiting hole 312 and are constrained in the circumferential direction, and are in an absolute axial parallel state. After the upper roller rolling element 40 moves to the lower part of the axis X of the bearing along with the rolling element cage 30, the rolling element 40 receives the pressing force of the inner ring 10 and the outer ring 20 at the same time to urge the member. 32 is compressed, separated from the inner wall downstream of the position limiting hole 312, and can roll without being restrained in the circumferential direction, and the rolling element 40 receives a pressing force that gradually increases, so that the outer ring 20 Since the rolling element 40 is synchronously rolled together with the outer ring 2 and maintains high axial accuracy before the rolling element 40 separates from the inner wall downstream of the position limiting hole 312, the rolling element does not swing in the circumferential direction. In the process of moving clockwise from the bearing axis X to the lowermost position 40, the pressing force received gradually increases, and the rolling element 40 is on the other side of the bearing axis X from below (FIG. 5). In the process of moving to the left side), the pressing force received gradually decreases, and the urging member 32 restores the deformation and presses the rolling element 40 again to the inner wall downstream of the position limiting hole 312, and the cage body 31 Rotate with.

As shown in FIGS. 7 to 10, the gap holder 33 is rotatably installed on the outer ring surface of the cage body 31, and the groove 311'is opened on the outer ring surface of the cage body 31. The gap holding members 33 are arranged at intervals in the groove 311'. First, the outer ring 20 is fitted onto the outer surface of the cage main body 31 and the gap holding member 33, and each rolling element 40 is further fitted into each position limiting hole. When each rolling element 40 is elastically brought into contact with the second inner wall of the position limiting hole 312 by the urging member 32 by mounting inside the 312, and the rolling element retainer 30 is assembled to the outer ring 20 of the bearing, the gap holding member is formed. 33 is between the outer ring 20 and the groove 311'. After attaching the rolling element cage 30 to the outer ring 20, the inner ring 10 is further inserted into the rolling element cage 30 and the position is restricted with respect to the axial direction of the bearing to complete the assembly.

The difference from the above-described bearing embodiment is that in this embodiment, a locking groove 100 for locking the collar 50 can be provided on the outer surface of one end of the inner ring 10. After the inner ring 10 is inserted into the rolling element cage 30, the retaining ring 60 is first fitted into the inner ring 10, the collar 50 is further engaged in the locking groove 100, and the cage body 31 is axially oriented. It is received by the retaining ring 60 and the position limitation in the axial direction is realized.

The rolling element cage of the present invention guarantees that the rolling element always maintains high-precision axial parallelism during transmission, and minimizes the occurrence of noise, vibration, damage, etc. during operation of the equipment. Each rolling element installed in the axial direction is in a state of high-precision axial parallelism with respect to the axial core line, and the rolling element freely rolls in the gap between the drive wheel and the driven wheel. , Rolling transmission, stress in ideal condition is realized, and the service life of the bearing is greatly extended.

The above description is merely a specific embodiment of the present application, and it should be explained that those skilled in the art can make a plurality of improvements and modifications without departing from the principle of the present application. And amendments are also considered to be within the scope of protection of the present application.

Claims (20)

There are a plurality of the gap holding members including an annular cage main body and an elastic urging member and a gap holding member attached to the cage main body, and the cage main body is provided along the circumferential direction of the cage main body. A plurality of position limiting holes arranged side by side on the inner ring surface or the outer ring surface and installed at intervals in the circumferential direction of the cage body are opened on the outer peripheral surface of the cage body to limit the position. The holes extend along the axial direction of the cage body and pass through and accommodate the roller-shaped rolling elements, and the inner wall of each position limiting hole is formed along the circumferential direction of the cage body. At least one of the urging members that elastically presses the rolling elements is fixed, and all the urging members press the corresponding urging members along the same circumferential direction of the cage body, which is high. Roller A roll cage that maintains parallelism. Each of the position limiting holes includes a first inner wall and a second inner wall facing each other in the rotation direction of the cage body, and the urging member is installed on the first inner wall of each of the position limiting holes. The rolling element cage according to claim 1, wherein the free end extends toward the second inner wall and maintains the high rolling element parallelism. A groove for fitting the gap holding member is provided on the inner ring surface or the outer ring surface of the cage body, and the gap holding member is rotatably installed in the groove and has a diameter of the groove. The rolling element cage that holds the high rolling element parallelism according to claim 2, which is larger than the depth of the torus. The rolling element cage according to claim 3, wherein the grooves are annular, and the gap holding members are closely arranged in the circumferential direction of the grooves to maintain high rolling element parallelism according to claim 3. The rolling element cage according to claim 4, wherein there are at least two grooves, and the two grooves are installed at intervals in the axial direction of the cage body. The cage body includes two annular positioning rings that are spaced apart from each other and a plurality of connecting beams that are connected between the two positioning rings, the groove of which is the positioning ring of the positioning ring. The fifth aspect of claim 5, wherein the position limiting hole is formed between two adjacent connecting beams formed on an inner ring surface or an outer ring surface, and at least one of the urging members is fixed to each of the connecting beams. Roller cage that maintains high roll parallelism. The urging member is a leaf spring, and two spaced positioning grooves are formed on the outer surface of the connecting beam of the cage body, and one end of the urging member is a surface of the connecting beam. The high rolling element parallelism according to claim 6, wherein the free end of the urging member extends toward the inner wall opposite to the position limiting hole. Roller cage to hold. Two of the urging members are fixed to the inner wall of each of the position limiting holes, and the two urging members in each of the position limiting holes are located at two different points in the axial direction of the cage body, respectively. The rolling element cage that presses the rolling element and maintains the high rolling element parallelism according to claim 1. The rolling element cage that maintains the high rolling element parallelism according to claim 2, wherein the gap holding member is a ball or a roller. The rolling element cage according to claim 2, wherein the first inner wall and the second inner wall of each of the position limiting holes are parallel to each other and maintain the high rolling element parallelism according to claim 2. The rolling elements include an inner ring, an outer ring, a rolling element, and a rolling element retainer that maintains a high degree of parallelism of the rolling elements, and there are a plurality of the rolling elements, which are rotatably installed between the inner ring and the outer ring. The rolling element cage that maintains high rolling element parallelism is installed between the inner ring and the outer ring, and includes an annular cage main body and an elastic urging member and a gap holding member attached to the cage main body. There are a plurality of the gap holding members, and the gap holding members are arranged side by side on the inner ring surface or the outer ring surface of the cage body along the circumferential direction of the cage body, and the outer peripheral surface of the cage body is covered with the above. A plurality of position limiting holes installed at intervals in the circumferential direction of the cage body are opened, and the position limiting holes extend along the axial direction of the cage body and pass through a roller-shaped rolling element. At least one of the urging members that elastically presses the rolling element along the circumferential direction of the cage body is fixed to the inner wall of each of the position limiting holes, and all of the urging members are urged. The member presses the corresponding urging member along the same circumferential direction of the cage body, and the gap holding member is between the cage body and the outer ring surface of the inner ring or the cage body. The rolling element is rotatably installed between the outer ring and the inner ring surface of the outer ring, and the rolling element is housed in the position limiting hole and elastically contacts the cage body by the action of the urging member. ,bearing. Each of the position limiting holes includes a first inner wall and a second inner wall facing each other in the rotation direction of the cage body, and the urging member is installed on the first inner wall of each of the position limiting holes. The bearing according to claim 11, wherein the free end extends toward the second inner wall. A groove for fitting the gap holding member is provided on the inner ring surface or the outer ring surface of the cage body, and the gap holding member is rotatably installed in the groove and has a diameter of the groove. 12. The bearing according to claim 12, which is greater than the depth of the torus. The bearing according to claim 13, wherein the grooves are annular, and the gap holding members are closely arranged in the circumferential direction of the grooves. The bearing according to claim 14, wherein there are at least two grooves, and the two grooves are installed at intervals in the axial direction of the cage body. The cage body includes two annular positioning rings that are spaced apart from each other and a plurality of connecting beams that are connected between the two positioning rings, the groove of which is the positioning ring of the positioning ring. 15. The 15th aspect of claim 15, wherein the position limiting hole is formed between two adjacent connecting beams formed on an inner ring surface or an outer ring surface, and at least one of the urging members is fixed to each of the connecting beams. bearing. The urging member is a leaf spring, and two spaced positioning grooves are provided on the outer surface of the connecting beam of the cage body, and one end of the urging member is a surface of the connecting beam. 16. The bearing according to claim 16, wherein the free end of the urging member is wound around the bearing and fitted in the positioning groove, and extends toward an inner wall opposite to the position limiting hole. Two of the urging members are fixed to the inner wall of each of the position limiting holes, and the two urging members in each of the position limiting holes are located at two different points in the axial direction of the cage body, respectively. The bearing according to claim 11, which presses the rolling element. The bearing according to claim 12, wherein the gap holding member is a ball or a roller. The bearing according to claim 12, wherein the first inner wall and the second inner wall of each of the position limiting holes are parallel to each other.

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