CN214617523U - Symmetrical rolling ball bearing retainer - Google Patents
Symmetrical rolling ball bearing retainer Download PDFInfo
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- CN214617523U CN214617523U CN202120572934.8U CN202120572934U CN214617523U CN 214617523 U CN214617523 U CN 214617523U CN 202120572934 U CN202120572934 U CN 202120572934U CN 214617523 U CN214617523 U CN 214617523U
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- connecting part
- ball bearing
- pockets
- rolling ball
- retainer
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Abstract
The utility model provides a symmetrical formula rolling ball bearing holder belongs to bearing technical field, keep ware and second including the first half that the structure suited and keep the ware, first half keep ware and second keep the ware and be the annular and have a plurality of half pockets and connecting portion, half pocket along its circumference evenly distributed, connecting portion locate between two adjacent half pockets and its circumference both ends are connected with the two respectively. The first connecting part and the second connecting part are matched with the dovetail groove structure in an inserting mode through the dovetail joint in the axial direction. The utility model discloses a to many-sided improvement such as structure, assembly methods and material of holder itself, effectively improved the structural stability of holder when reducing the possibility that the rolling element breaks away from the holder, make it more be suitable for high-speed operating mode and use.
Description
Technical Field
The utility model relates to a bearing technical field especially relates to a symmetrical formula rolling ball bearing holder.
Background
The bearing cage is an important part of a rolling bearing, which serves to separate and hold the rolling bodies and to guide them to roll on a predetermined track of the bearing ring. Since the races and the races of the thrust ball bearing can be separated from each other, from the viewpoint of workability in assembling, disassembling, and the like of the bearing to the device, it is necessary to prevent the rolling elements from easily falling off the cage, and specifically, it is necessary to wrap the peripheries of the pockets after the rolling elements are put in the cage to prevent the rolling elements from falling off.
Based on this, the present application is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a simple structure, the assembly symmetry formula rolling ball bearing holder of being convenient for reduce the probability that the rolling element drops from the holder, improve the stability of rolling element and holder under the operation.
In order to achieve the above object, the present invention provides a symmetrical rolling ball bearing retainer, which comprises:
the first half retainer is annular and is provided with a plurality of first half pockets and a plurality of first connecting parts, the first half pockets are uniformly distributed along the circumferential direction of the first half retainer, the first connecting parts are arranged between two adjacent first half pockets, and two circumferential ends of the first connecting parts are respectively connected with the two first half pockets;
a second half retainer having a ring shape, second half pockets corresponding one-to-one to the first half pockets, and second connecting portions for connecting two adjacent second half pockets;
the first connecting part and the second connecting part are in inserting fit in the axial direction: the first connecting part is provided with a dovetail joint, and the second connecting part is provided with a dovetail groove matched with the dovetail joint.
Through the half holder that cooperatees and form of the half holder of above-mentioned first and second, it has the circumference and wraps up the pocket hole of the same circumference of ball completely, and because it adopts two half holders concatenation to form, compares in integral holder structure, and it is more convenient for the assembly of rolling element. Meanwhile, the technical scheme is formed by inserting and matching the dovetail groove and the dovetail, so that the assembling steps are few, the connection stability is high, and the semi-retainer or the rolling body therein can be conveniently disassembled and replaced according to the requirement.
Furthermore, the utility model discloses the whole symmetrical design that adopts of holder, the local area of connecting portion except dovetail and dovetail also adopts symmetrical design to make the holder symmetry higher, the event is under high-speed operation, and holder mass distribution is even, can maintain balanced operation.
In the above technical scheme, first connecting portion adopt axial connection with the second connecting portion: the influence of radial stress on the stability of the connecting structure is effectively avoided, and the connecting strength is improved; and the axial connection mode has larger space, and the connection structure is larger and is easy to open and process.
The utility model discloses further set up as follows: the first half retainer and the second half retainer are respectively integrally processed and molded and adopt melamine resin materials. Because the retainer is made of melamine resin, the integral hardness of the retainer is enhanced, the deformation degree during high-speed operation is reduced, and the interference between the pockets and the rolling balls in the pockets and the influence on the high-speed operation performance of the bearing are avoided.
The utility model discloses further set up as follows: at least one dovetail joint and a dovetail groove which are adjacently arranged are respectively arranged on the first connecting portion and the second connecting portion, so that nodes between the first connecting portion and the second connecting portion are increased, the stability of the connecting structure is ensured, and the first connecting portion and the second connecting portion are not easy to fall off under the action of a large axial force.
The utility model discloses further set up as follows: the length of the dovetail groove and the length of the dovetail groove are matched with the axial length of the first connecting part and the axial length of the second connecting part, so that the range of the connecting structure is enlarged, the connecting strength is improved, and the structural stability of the retainer is ensured.
The utility model discloses further set up as follows: one axial end of the first connecting part is provided with a coating groove which coats the side end of the second connecting part opposite to or attached to the first connecting part; and the other axial end of the second connecting part is provided with a coating groove which coats the side end of the first connecting part opposite to or attached to the second connecting part.
Among the above-mentioned technical scheme, the cladding groove both can be in the assembly assistance-localization real-time, also can increase the tie point of first connecting portion and second connecting portion through modes such as interference fit, improves the stability that first connecting portion and second connecting portion are connected.
The utility model discloses further set up as follows: and one axial end of the first connecting part is provided with a coating groove which coats the side end of the second connecting part opposite to or attached to the first connecting part.
In the technical scheme, the coating groove can be in interference insertion fit with the axial end part of the first connecting part and/or the second connecting part.
For lightening the weight of the holder, improving the high-speed running performance of the holder, the utility model discloses further set up as follows: the first half pocket and the second half pocket are formed by a half ring body.
The utility model discloses further set up as follows: the first half pocket and the second half pocket are formed by adjacent combination of two semi-ring strips, and the plane where the semi-ring strips are located forms an included angle of 5-15 degrees. Compared with the technical scheme that the half ring bodies are connected, the technical scheme further restrains the rolling balls at different positions through the included angle between the two half ring bodies, improves the restraint force, reduces the displacement of the rolling balls in the retainer, reduces the weight, reduces the centrifugal force of the rolling balls under high-speed operation and ensures that the retainer is not easy to deform.
The utility model has the advantages as follows:
one, the utility model discloses the holder adopts the melamine resin to make, and holder bulk strength is high, be difficult for warping to the holder adopts two half holder combinations to form, can wrap up the circumference of rolling element completely, increases the coverage rate of holder to the pocket, and reduces the possibility that the rolling element breaks away from the holder.
Secondly, the utility model discloses holder simple structure, processing and convenient assembling, also convenient to detach change parts. Meanwhile, the retainer has good symmetry and good high-speed dynamic balance performance, and is suitable for practical use.
Drawings
Fig. 1 is a schematic view of the whole embodiment 1 of the present invention.
Fig. 2 is an explosion diagram of embodiment 1 of the present invention.
Fig. 3 is a schematic top view of embodiment 1 of the present invention.
Fig. 4 is a schematic sectional view of fig. 3A.
Fig. 5 is a partially enlarged view of fig. 4.
Fig. 6 is a schematic view of embodiment 2 of the present invention.
Fig. 7 is a schematic view of embodiment 3 of the present invention.
Reference numerals: 1-first half retainer, 2-second half retainer, 110-first half pocket, 120-first connection, 210-second half pocket, 220-second connection, 121-dovetail, 122-dovetail, 123-first cladding structure, 221-dovetail, 222-second cladding structure.
Detailed Description
The utility model discloses symmetrical formula rolling ball bearing holder, it is kept the ware by two symmetry designs and can dismantle fixed connection and constitute, both conveniently dismantles and install the rolling ball, has still improved the symmetry of holder, improves the high-speed running performance of bearing.
Referring to fig. 1 and 3, the first connection portion 120 and the second connection portion 220 correspond in position and structure, the first connection portion 120 is provided with a dovetail 122121 or a dovetail 221, the second connection portion 220 is provided with a corresponding dovetail 221 or a dovetail 122121, the radius of the first half retainer 1 is slightly smaller than that of the second half retainer 2, the first half retainer 1 is arranged at the inner ring of the second half retainer 2, namely, the first half pocket 110 is in contact fit with the second half pocket 210, and the first connection portion 120 and the second connection portion 220 are in axial insertion fit with the dovetail 122121 structure through the dovetail 221, so as to form a complete retainer capable of mounting rolling balls and guiding the rolling balls to rotate.
In this embodiment, in order to ensure the connection strength between the first connection portion 120 and the second connection portion 220 and avoid the bad situation that the cage is scattered in a high-speed working condition, the lengths of the dovetail groove 221 and the dovetail block 122121 may be increased: specifically, the lengths of the dovetail groove 221 and the dovetail groove 221 are adapted to the axial lengths of the first connecting portion 120 and the second connecting portion 220.
Example 2 this example differs from example 1 in that: in this embodiment, an axial end of the first connecting portion 120 is provided with a first covering groove for covering the side end of the second connecting portion 220 opposite to or attached to the first connecting portion, and the first covering groove is formed by the first covering structure 123 in fig. 6. The other axial end of the second connection portion 220 may be provided with a second coating groove for coating the side end of the first connection portion 120 opposite or attached thereto, the coating groove structure being formed by a second coating structure 222 similar to the first coating structure 123. When the connecting structure is used, only when the first connecting portion 120 and the second connecting portion 220 are assembled, the axial end portion of one side of the first connecting portion 120 and the axial end portion of the other side of the second connecting portion 220 are respectively in inserting fit with the second covering structure 222 and the first covering structure 123, and preferably, the inserting fit is preferably an inserting fit.
Of course, only one axial end of the first connecting portion 120 may be provided with a covering groove for covering the side end of the second connecting portion 220 opposite to or attached to the first connecting portion.
Example 3 this example differs from example 1 in that: in this embodiment, at least one dovetail 122121 and at least one dovetail 221 are disposed adjacent to each other on the first connecting portion 120 and the second connecting portion 220, as shown in fig. 7, a preferable structure is to dispose two dovetails 122121 disposed at intervals and a dovetail 221 between the two dovetails 122121 on the first connecting portion 120, and the connecting structures such as the dovetail 221 and the dovetail 122121 on the second connecting portion 220 correspond to those on the first connecting portion 120.
Embodiment 4 this embodiment differs from the above embodiments in that: in this embodiment, the first half pocket 110 and the second half pocket 210 are formed by two half-ring strips that are adjacently combined, and the plane where the two half-ring strips are located forms an included angle of 5-15 °. Through this design, the arc that is used for on the first half pocket 110 that this embodiment enlarges, the second half pocket 210 contacts the complex with the rolling ball supports the area, has improved the restraint to the rolling element wherein installing, can help reducing the float volume of rolling ball, and then improves the running performance of bearing, more is suitable for the use of running under high speed. Meanwhile, because a gap exists between the double semi-ring strips, lubricating oil in the bearing can enter the gap between the rolling balls and the retainer to lubricate the rolling balls, reduce friction and further improve the running performance of the bearing.
To sum up, the utility model provides a structure symmetry, simple, the novel rolling ball bearing's of the assembly of being convenient for simultaneously holder, it is through to many-sided improvements such as holder structure itself, assembly methods and material, has effectively improved the high-speed running performance in the aspect of the structural stability, intensity of holder, makes it be suitable for and uses with high-speed operating mode.
Claims (7)
1. Symmetrical rolling ball bearing retainer, its characterized in that:
the first half retainer is annular and is provided with a plurality of first half pockets and a plurality of first connecting parts, the first half pockets are uniformly distributed along the circumferential direction of the first half retainer, the first connecting parts are arranged between two adjacent first half pockets, and two circumferential ends of the first connecting parts are respectively connected with the two first half pockets;
a second half retainer having a ring shape, second half pockets corresponding one-to-one to the first half pockets, and second connecting portions for connecting two adjacent second half pockets;
the first connecting part and the second connecting part are in inserting fit in the axial direction: the first connecting part is provided with a dovetail joint, and the second connecting part is provided with a dovetail groove matched with the dovetail joint.
2. The symmetrical rolling ball bearing cage of claim 1, wherein: the first half retainer and the second half retainer are respectively integrally processed and molded and adopt melamine resin materials;
and/or the first connecting part and the second connecting part are respectively provided with at least one dovetail joint and at least one dovetail groove which are adjacently arranged.
3. The symmetrical rolling ball bearing cage of claim 2, wherein: the length of the dovetail groove and the length of the dovetail groove are matched with the axial length of the first connecting part and the axial length of the second connecting part.
4. A symmetrical rolling ball bearing cage according to any of claims 1 to 3, wherein: one axial end of the first connecting part is provided with a coating groove which coats the side end of the second connecting part opposite to or attached to the first connecting part; and the other axial end of the second connecting part is provided with a coating groove which coats the side end of the first connecting part opposite to or attached to the second connecting part.
5. The symmetrical rolling ball bearing cage of claim 4, wherein: only one axial end of the first connecting part is provided with a coating groove which coats the side end of the second connecting part opposite to or attached to the first connecting part.
6. A symmetrical rolling ball bearing cage according to any of claims 1 to 3, wherein: the first half pocket and the second half pocket are formed by a half ring body.
7. The symmetrical rolling ball bearing cage of claim 6, wherein: the first half pocket and the second half pocket are formed by adjacent combination of two semi-ring strips, and the plane where the semi-ring strips are located forms an included angle of 5-15 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572934.8U CN214617523U (en) | 2021-03-19 | 2021-03-19 | Symmetrical rolling ball bearing retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572934.8U CN214617523U (en) | 2021-03-19 | 2021-03-19 | Symmetrical rolling ball bearing retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214617523U true CN214617523U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120572934.8U Active CN214617523U (en) | 2021-03-19 | 2021-03-19 | Symmetrical rolling ball bearing retainer |
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| CN (1) | CN214617523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117847089A (en) * | 2024-03-06 | 2024-04-09 | 宁波银球科技股份有限公司 | Bearing retainer |
-
2021
- 2021-03-19 CN CN202120572934.8U patent/CN214617523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117847089A (en) * | 2024-03-06 | 2024-04-09 | 宁波银球科技股份有限公司 | Bearing retainer |
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