CN110030274A - Retainer, rolling element and rolling bearing for rolling bearing - Google Patents
Retainer, rolling element and rolling bearing for rolling bearing Download PDFInfo
- Publication number
- CN110030274A CN110030274A CN201910063141.0A CN201910063141A CN110030274A CN 110030274 A CN110030274 A CN 110030274A CN 201910063141 A CN201910063141 A CN 201910063141A CN 110030274 A CN110030274 A CN 110030274A
- Authority
- CN
- China
- Prior art keywords
- retainer
- rolling element
- rolling
- rolling bearing
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
- F16C33/4682—Details of individual pockets, e.g. shape or roller retaining means of the end walls, e.g. interaction with the end faces of the rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/48—Cages for rollers or needles for multiple rows of rollers or needles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to the retainers, rolling element and rolling bearing itself for rolling bearing.The retainer (1) is for being spaced and guiding rolling element (2), and retainer (1) includes at least two rings (11), ring (11) passes through the cage bar (12) axially extended and is connected with each other, wherein, the axial valley (13) of matching rolling element (2) axial end portion is equipped on ring (11)；The axial ends of rolling element (2) is equipped with protrusion (21)；The rolling bearing includes above-mentioned retainer (1) and above-mentioned rolling element (2).
Description
Technical field
The present invention relates to rolling bearings.The present invention is more particularly directed to the optimization designs of the retainer of rolling bearing and rolling element.
Background technique
Rolling bearing is used to the sliding friction between the axis and axle bed of operating becoming rolling friction, to reduce friction damage
It loses.Rolling bearing is generally made of inner ring, outer ring, rolling element and four part of retainer.Retainer is by rolling element equidistant intervals
It opens, is evenly distributed on rolling element on the circumference of raceway, mutually colliding and rubbing between rolling element when preventing rolling bearing from working
It wipes.Meanwhile retainer can also guide and rolling element is driven to roll on correct raceway.
Existing retainer is implemented according to different bearing types with different design scheme, such as buckle type is kept
Frame, riveted type retainer, cassette retainer or window type cage.A kind of window guarantor is disclosed in Chinese patent CN102072255B
Hold frame.In another example disclosing a kind of cassette retainer in Chinese patent CN101896729B.
However in the prior art, between every two adjacent rolling element always by the section barrier of retainer, these
Section can also have other designs along the axially extending of rolling bearing, the e.g. form of cage bar.This set every
In the scheme of stopper section, the spacing of the rolling element of circumferentially adjacent arrangement is larger in retainer, therefore in bearing size one
In the case where fixed, the number of rolling element is less, and then reduces the bearing capacity of retainer.
Summary of the invention
Therefore, technical problem to be solved by the invention is to provide a kind of rolling bearing, this rolling bearing has good
Bearing capacity will not phase mutual friction between rolling element and in rolling bearing work.
The technical problem is solved by the retainer, rolling element and rolling bearing itself for rolling bearing.
Retainer according to the present invention for rolling bearing is kept for being spaced and guiding the rolling element of rolling bearing
Frame includes at least two rings, and ring passes through the cage bar axially extended and is connected with each other, wherein there is ring matching to roll
The axial valley of the axial end portion of body.
In this case, rolling bearing further includes bearing outer ring and bearing inner race.It is single-row bearing in rolling bearing
In the case of, retainer includes two rings being adjacently positioned；In the case where rolling bearing is double-row bearing, retainer includes simultaneously
Three rings that arrangement is set；And so on.Each ring arranged concentric and pass through cage bar be connected with each other.Cage bar exists
This is only used for connecting two adjacent rings, and is no longer used to the rolling element of barrier rolling bearing.The adjacent rolling of rolling bearing
Kinetoplast is spaced apart from each other by the axial valley in ring.Specifically, phase can be arranged in the axial ends of rolling element
In two adjacent rings on the corresponding axial valley in position or in axial valley, since axial valley matches in shape and size
The axial end portion of rolling element, ensure that each rolling element rolling bearing work when will not phase mutual friction, so that it is guaranteed that the axis of rolling
The limit speed held.In this case, the number of the cage bar between two rings is not necessarily equal to of the column rolling element
Number, but the number for the rolling element that can be less than between the two rings.Cage bar is preferably on the circumferencial direction of retainer
It is uniformly distributed.The position of number and/or reasonable Arrangement cage bar by reduction cage bar can be in the circumference of retainer
Rolling element is more densely arranged on direction, to improve the bearing capacity of rolling bearing.In addition, especially compared with prior art
In the case where reducing cage bar number, the use of the raw material of retainer can be advantageously reduced, reduce the cost of retainer,
And also reduce the weight of retainer.
In a kind of preferred design scheme, retainer is Integral retainer, i.e. integrated retainer, thus retainer
With good bearing capacity and operational reliability.Alternatively, in order to which technique is convenient, retainer also can be split type holding
Frame.
In another preferred design scheme, axial valley is uniformly distributed on the circumferencial direction of ring, to guarantee
Rolling element is evenly distributed on the circumferencial direction of rolling body bearing.
In a preferred embodiment, ring is arranged in radially outside or radially in axial valley.Specifically,
Axial valley can be the groove axially extended, the opening of groove towards ring radially outside or radially.To special
Not in the case where retainer is Integral retainer, also easily rolling element can be installed in axial valley.
In this case, advantageously, axial valley has the stop configurations being maintained at rolling element on its position.Backstop
Structure had both included axial stop structure, also included radial stop configurations.Such as rolling element axial end portion be in truncated cone-shaped or ball
In the case where platform shape, in the axial direction, groove can be designed and had different sizes along axial direction, groove can be designed towards rolling element
Side have biggish cross sectional dimensions, backwards to the side of rolling element have lesser cross sectional dimensions, thus retainer energy
The axial position for enough keeping each rolling element prevents rolling element from falling off from the side of bearing；It radially, can be in recess sidewall
Upper setting protrusion enables the end of rolling element to block in a groove to suitably reduce the degree of slot opening, reduces radial
It jumps, and will not radially fall off.In addition in the case where retainer is split type retainer, also it can be considered that will be, for example,
The axial valley of blind hole form is arranged on the axial end face of ring.
Rolling element according to the present invention for rolling bearing, by the retainer interval of rolling bearing and guidance, wherein rolling
The axial ends of kinetoplast is equipped with protrusion.Rolling element is, for example, cylindrical roller, taper roller, spherical roller, needle roller etc..Rolling element
Two protrusions be arranged in two rings of retainer in corresponding axial valley, so that retainer will be adjacent
Rolling element separates and rolling element is guided to rotate.
In a kind of advantageous design scheme, protrusion is in truncated cone-shaped.The central axes of truncated cone-shaped protrusion and rolling element
Arrange to rotation axis coincident.The bigger diameter end of protrusion is arranged in rolling element body side, and miner diameter end is arranged in rolling bearing
It is axially external.So as to correspondingly design the axial valley of retainer, be particular enable to pass through using the shape of this protrusion
Axial valley is designed in such a way that shape is complementary, to keep each rolling element on a corresponding position.
In another advantageous design scheme, protrusion is in billiard table shape.The central axes of billiard table shape protrusion and rolling element
Rotation axis coincident arrange.The bigger diameter end of protrusion is arranged in rolling element body side, and miner diameter end is arranged in rolling bearing
It is axially external.In this case, be on the one hand conducive to the design of stop configurations on retainer, on the other hand, in retainer
Axial valley the tapered face of inner surface in the case where, the protrusion of rolling element realizes that line contacts with axial valley, is conducive to
Reduce friction.
Rolling bearing according to the present invention, including inner ring, outer ring, above-mentioned retainer and above-mentioned rolling element.Pass through retainer
Axial valley and rolling element axial ends protrusion design, can reliably be spaced rolling element and guide rolling element
It is rolled between inner ring and outer ring, guarantees not generating friction between rolling element, advantageously ensure that the limit speed of bearing, meanwhile,
More rolling elements can be arranged on the circumferencial direction of rolling bearing, to increase the bearing capacity of rolling bearing.Furthermore it is possible to
The number for reducing cage bar compared with prior art reduces the cost of retainer to reduce the use of the raw material of retainer,
And reduce the weight of retainer.
Detailed description of the invention
Schematically illustrate a kind of preferred embodiment of the invention with reference to the accompanying drawing.Attached drawing are as follows:
Fig. 1 is the perspective view of retainer according to the preferred embodiment of the present invention,
Fig. 2 is the main view for matching the rolling element of the retainer according to this Fig. 1,
Fig. 3 is the perspective view with the rolling bearing of the retainer and rolling element according to fig. 2 according to Fig. 1, wherein not showing
Bearing outer ring out,
Fig. 4 is half sectional view of the radially cutting according to the rolling bearing of Fig. 3, and
Fig. 5 is the partial side view according to the rolling bearing of Fig. 3.
In various figures, identical component or structure use identical appended drawing reference.
Specific embodiment
Fig. 1 and Fig. 2 respectively illustrates being mutually matched for the rolling bearing of a preferred embodiment of the invention
Retainer and rolling element.Rolling bearing is the rolling bearing of single-column type.In the preferred embodiment, rolling bearing further includes outer
Circle and inner ring.Retainer is for being spaced rolling element and rolling element being guided to roll between outer ring and inner ring.
As shown in Figure 1, the retainer 1 of rolling bearing is Integral retainer, retainer 1 includes the ring of two arranged concentrics
Part 11, ring 11 pass through the cage bar 12 axially extended and are connected with each other, and cage bar 12 is evenly distributed on the circle of retainer 1
In circumferential direction.Evenly distributed axial recess portion 13 in a circumferential direction is correspondingly provided in two rings 11.Axial valley
13 be the axially extending groove along rolling bearing, the radial outside of the opening of groove towards ring 11.Axial valley 13 matches
The axial end portion 21 of rolling element 2 (will be described in detail later).
Fig. 2 shows the rolling element 2 of the above-mentioned retainer 1 of matching, rolling element 2 is cylindrical roller in the present embodiment.Rolling
The axial ends of kinetoplast 2 is respectively equipped with protrusion 21.Protrusion 21 is in truncated cone-shaped, the central axes of truncated cone-shaped protrusion 21 and rolling
Arrange to the rotation axis coincident of body 2.The bigger diameter end of protrusion 21 is arranged in rolling element body side, and miner diameter end is arranged in rolling
Bearing it is axially external.
Fig. 3 is the perspective view of above-mentioned rolling bearing, wherein in order to be clearly shown the complementary of retainer 1 and rolling element 2
Arrangement removes outer ring 4.Fig. 4 is the half sectional view of the rolling bearing of radially cutting.As shown in Figure 3 and Figure 4, rolling element
2 two protrusions 21 are arranged in the corresponding axial valley 13 of two rings 11 of retainer 1, to keep
Adjacent rolling elements 2 are separated and rolling element 2 are guided to rotate by frame 1.Friction is not generated between rolling element 2, advantageously ensures that rolling
The limit speed of dynamic bearing.Meanwhile, it is capable to more rolling elements 2 be arranged on the circumferencial direction of rolling bearing, to increase rolling
The bearing capacity of bearing.Furthermore it is possible to the number of cage bar 12 be reduced compared with prior art, to reduce the original of retainer 1
The use of material reduces the cost of retainer 1, and also reduces the weight of retainer 1.
In addition, retainer 1 is equipped with backstop knot in order to guarantee that rolling element 2 is maintained on its position when rolling bearing works
Structure.Axial stop structure is as shown in Figure 1, the inner surface of axial valley 13 is substantially tapered, axis of the axial valley 13 in retainer 1
There is biggish slot cross-section inwardly, and there is lesser slot cross-section in the axially external of retainer 1, so as to effectively
Backstop rolling element 2 in the axial direction.Radial stop configurations on the side wall of axial valley 13 as shown in figure 5, be equipped with along axial in length
The protrusion 14 that bar shaped extends enables the end 21 of rolling element 2 to be stuck in axial direction to reduce the openings of sizes of axial valley 13
In recess portion 13, reduces radial direction and jump, and will not radially fall off.
Although being illustratively described possible embodiment in the above description, it should be appreciated that arrive, still through institute
With the presence of the variation of technical characteristic known and that furthermore technical staff is readily apparent that and a large amount of embodiments of combination of embodiment.
Furthermore it should also be understood that illustrative embodiment is as just an example, this embodiment never limits in any form
Protection scope of the present invention, application and construction processed.It is more that one kind is provided to technical staff for converting by preceding description
The technological guidance of at least one illustrative embodiments, wherein, can be into without departing from the protection scope of claims
Row various changes, especially with respect to the component function and structure in terms of change.
Claims (9)
1. a kind of retainer (1) for rolling bearing, described for being spaced and guiding the rolling element (2) of the rolling bearing
Retainer (1) includes at least two rings (11), and the ring (11) passes through the cage bar (12) axially extended and mutually interconnects
It connects, which is characterized in that the ring (11) has the axial valley (13) for the axial end portion for matching the rolling element (2).
2. retainer (1) according to claim 1, which is characterized in that the retainer (1) is Integral retainer.
3. retainer according to claim 1, which is characterized in that circle of the axial valley (13) in the ring (11)
It is uniformly distributed in circumferential direction.
4. retainer according to claim 1, which is characterized in that the axial valley (13) is arranged in the ring (11)
Radially outside or radially.
5. retainer according to claim 1, which is characterized in that the axial valley (13) has the rolling element
(2) stop configurations being maintained on its position.
6. a kind of rolling element (2) for rolling bearing, the rolling element (2) is spaced by the retainer (1) of the rolling bearing
And guidance, which is characterized in that the axial ends of the rolling element (2) is equipped with protrusion (21).
7. rolling element according to claim 6, which is characterized in that the protrusion is in truncated cone-shaped.
8. rolling element according to claim 6, which is characterized in that the protrusion is in billiard table shape.
9. a kind of rolling bearing, the rolling bearing include retainer according to any one of claim 1 to 5 (1) and
The rolling element according to any one of claim 6 to 8 (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063141.0A CN110030274A (en) | 2019-01-23 | 2019-01-23 | Retainer, rolling element and rolling bearing for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063141.0A CN110030274A (en) | 2019-01-23 | 2019-01-23 | Retainer, rolling element and rolling bearing for rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110030274A true CN110030274A (en) | 2019-07-19 |
Family
ID=67235580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063141.0A Pending CN110030274A (en) | 2019-01-23 | 2019-01-23 | Retainer, rolling element and rolling bearing for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030274A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021177366A1 (en) * | 2020-03-06 | 2021-09-10 | 日本精工株式会社 | Cage and roller |
-
2019
- 2019-01-23 CN CN201910063141.0A patent/CN110030274A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021177366A1 (en) * | 2020-03-06 | 2021-09-10 | 日本精工株式会社 | Cage and roller |
| EP4116595A4 (en) * | 2020-03-06 | 2023-07-26 | NSK Ltd. | Cage and roller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190719 |