KR20170010920A - Retainer for ball bearing - Google Patents

Retainer for ball bearing Download PDF

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Publication number
KR20170010920A
KR20170010920A KR1020150102148A KR20150102148A KR20170010920A KR 20170010920 A KR20170010920 A KR 20170010920A KR 1020150102148 A KR1020150102148 A KR 1020150102148A KR 20150102148 A KR20150102148 A KR 20150102148A KR 20170010920 A KR20170010920 A KR 20170010920A
Authority
KR
South Korea
Prior art keywords
support
circumferential direction
ball
ball bearing
portions
Prior art date
Application number
KR1020150102148A
Other languages
Korean (ko)
Inventor
이경구
Original Assignee
셰플러코리아(유)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 셰플러코리아(유) filed Critical 셰플러코리아(유)
Priority to KR1020150102148A priority Critical patent/KR20170010920A/en
Publication of KR20170010920A publication Critical patent/KR20170010920A/en

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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
    • F16C33/38—Ball cages
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
    • 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
    • F16C33/38—Ball cages
    • F16C33/42—Ball cages made from wire or sheet metal strips
    • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
    • F16C33/425—Ball cages made from wire or sheet metal strips made from sheet metal from a single part, e.g. ribbon cages with one corrugated annular part

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

A ball bearing retainer according to the present invention is a ball bearing having an inner ring, an outer ring, and a plurality of balls provided between the inner ring and the outer ring, wherein the ball is provided between the inner ring and the outer ring, A plurality of receiving portions formed along the circumferential direction and made of wires;
The receiving portion includes two support portions spaced apart from each other in the circumferential direction so as to face each other and a first connection portion extending in the circumferential direction and having opposite ends connected to one end portion of two support portions forming a receiving portion to form a receiving portion together with the support portion ;
Wherein the adjacent receiving portion is connected by a second connecting portion and the second connecting portion is connected to the other end portion of the supporting portion of the accommodating portion adjacent to the both ends.

Description

Retainer for ball bearing

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball bearing retainer, and more particularly, to a ball bearing retainer which is easy to attach and detach, improves lubrication performance, and can be used for a bearing in which the distance between the ball and the ball is not constant.

1, a conventional ball bearing 1 using a spring includes a shaft 2 that can be rotationally driven about a shaft 6, a bearing ring 3 that is eccentric with respect to the shaft 2, And a ball 5 between the bearing ring 3 and the shaft 2 with various diameters depending on the different width of the ring gap 4 between the bearing ring 3 and the shaft 2. [

Between the balls 5, a hollow rolling body cage 7 is provided. A spring member (9) is provided inside the rolling body cage (7). The spring member 9 supports the ball 5.

Conventionally, ball bearings using springs have complicated steps of assembling the bearings, the lubrication of the grease is not smooth, and the cage may be damaged due to twisting occurring when the bearings are rotated.

Korean Patent Laid-Open Publication No. 10-2014-0000647 (2014.01.03)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a ball bearing capable of being lubricated with grease easily and being not affected by twisting generated when the bearing rotates, The present invention provides a retainer.

A ball bearing retainer according to the present invention is a ball bearing having an inner ring, an outer ring, and a plurality of balls provided between the inner ring and the outer ring, wherein the ball is provided between the inner ring and the outer ring, A plurality of receiving portions formed along the circumferential direction and made of wires;

The receiving portion includes two supporting portions spaced apart from each other in the circumferential direction and facing each other and a first connecting portion extending in the circumferential direction and having opposite ends connected to one ends of two supporting portions forming a receiving portion to form a receiving portion together with the supporting portion;

Wherein the adjacent receiving portion is connected by the second connecting portion and the second connecting portion is connected to the other end of the supporting portion of the neighboring receiving portion.

In the above, the supporting part is formed as an arc, and the ball inserted in the receiving part is supported on both sides in the circumferential direction by the support part.

In this case, the distance in the radial direction between the support portions in the two support portions constituting the accommodation portion is smaller than the gap in the radially outer side.

In the above, both circumferential end portions of the ball inserted into the accommodating portion protrude in the circumferential direction beyond the support portion.

The supporting portion may be formed to have a circular arc angle in a range of 180 ° <θ <360 °, and end portions of the supporting portions may be spaced apart from each other.

The supporting portion may have a circular arc angle of 180 ° <θ, and the supporting portion may be formed in a spiral shape and the end portions may be spaced apart in the circumferential direction.

The second connection portion may include a spring portion coiled along the circumferential direction.

The first connecting portion of at least one receiving portion of the plurality of receiving portions is connected at its other end to the other end of the two supporting portions constituting the receiving portion;

One end of the second connection portion is connected to one end of the support portion and the other end of the second connection portion is connected to the other end of the support portion of the adjacent accommodation portion;

And the first connecting portions of the accommodating portions adjacent to the accommodating portion are staggered in the circumferential direction.

The wire thickness of the spring portion is different from the wire thickness of the connection portion.

The retainer for ball bearings according to the present invention is made of a wire so that it is not affected by twisting generated when the bearing rotates, the lubrication oil flow is improved, the lubricity is improved, and the effect can be used for a bearing having a constant distance between the ball and the ball .

1 is a cross-sectional view showing a ball bearing using a conventional spring,
2 is a view showing a state where a ball is received in a ball bearing retainer according to the present invention,
3 is a plan view showing a retainer for a ball bearing according to the present invention,
4 is an enlarged perspective view of a state where a ball is received in a ball bearing retainer according to the present invention,
5 is an enlarged perspective view of a ball bearing retainer according to the present invention,
6 is an enlarged perspective view of a receiving portion of a ball bearing retainer according to the present invention,
7 is a perspective view for explaining a support part of a ball bearing retainer according to the present invention,
8 is a plan view showing a modification of the ball bearing retainer according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a ball bearing retainer according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a plan view showing a retainer for ball bearings according to the present invention, and Fig. 4 is a plan view of a ball bearing retainer according to the present invention. Fig. FIG. 5 is an enlarged perspective view of a ball bearing retainer according to the present invention, FIG. 6 is an enlarged perspective view of a receiving portion of a ball bearing retainer according to the present invention, FIG. 7 is a perspective view of the present invention Fig. 8 is a plan view showing a modification of the ball bearing retainer according to the present invention. Fig. 8 is a plan view showing a modification of the retainer for ball bearings according to the present invention.

2, the ball retaining retainer 100 according to the present invention includes a plurality of receiving portions 110 formed along a circumferential direction, and a plurality of receiving portions 110 connecting neighboring receiving portions 110 And has a second connecting portion 117. A ball 30 is inserted into the receiving part 110. The retainer (100) for a ball bearing according to the present invention is formed by plastically deforming a wire.

The receiving part 110 is composed of two supporting parts 113 and a first connecting part 111 and the neighboring receiving part 110 is connected to a second connecting part 117.

As shown in FIGS. 2 to 6, each receiving portion 110 is formed of two supporting portions 113. The supporting portion 113 is formed in an arc shape. Support portions 113 spaced circumferentially such that imaginary faces formed by the arc shape of the support portions 113 face each other are provided to face each other. The radial inward gap between the support portions 113 provided to face each other is smaller than the radial outward gap. The spacing between the support portions 113 provided to face each other is set to be longer in the circumferential direction from the radially inner side to the radially outer side.

The distance between the support portions 113 is smaller than the diameter of the ball 30 to be inserted into the receiving portion 110. The support portion 113 is provided to support the ball 30 inserted in the accommodating portion 110 from both sides in the circumferential direction and to be supported by the support portion 113. Both end portions in the circumferential direction of the ball 30 protrude in the circumferential direction beyond the support portion 113.

Both ends of the support 113 are spaced apart from each other. The supporting portion 113 has a circular arc angle in a range of 180 ° <θ <360 °. Both end portions of the support portion 113 are spaced apart in the circumferential direction of the arc portion of the support portion 113. Both end portions of the support portion 113 may be provided so as to be spaced apart from each other in the circumferential direction of the retainer 100.

The supporting portion 113 may have a circular arc angle of 360 deg. Both end portions of the support portion 113 are spaced apart from each other in the circumferential direction. The support portion 113 is provided in a spiral shape. The support angle of the support portion 113 may be n times (n is 1,2,3,4, ..., n (n is a natural number)) 360 degrees and both ends are circumferentially spaced apart.

One end portion of the support portion 113 is connected to the first connection portion 111 and the other end portion is connected to the second connection portion 117.

The first connection part 111 extends in the circumferential direction. The first connection part 111 is provided between the opposed support parts 113. Both end portions of the first connection portion 111 are connected to one end portion of the two support portions 113 facing each other. A first connection part 111 is connected between the support parts 113 to form a pocket part 115 into which the ball 30 can be inserted. The length of the first connection part 111 is shorter than the diameter of the ball 30. The first connection portion 111 serves to support the ball 30 received in the receiving portion 110 from the radially inner side to the outer side. The first connecting part 111 may be connected to the other end of the opposite supporting part 113 so as to be offset from the first connecting part 111 of the adjacent receiving part 110 in the circumferential direction.

The second connection part 117 extends in the circumferential direction. Both ends of the second connection part 117 are connected to the other end of the support part 113 of the neighboring storage part 110. The second connection part 117 serves to connect the neighboring reception part 110. The length of the second connection part 117 may be shorter than the length of the first connection part 117. The second connection part 117 may be curved.

One end of the second connection part 117 is connected to one end of the support part 113 and the other end of the second connection part 117 is connected to the other end of the support part 113, And may be connected to the other end of the support portion 113 of the base 110.

As shown in FIG. 8, the second connection part 117 may include a spring part 130. The second connection part 117 is coiled along the circumferential direction. Both ends of the second connection part 117 having the spring part 130 are connected to the other end of the support part 113 constituting the neighboring accommodation part 110. The spring 130 is coiled one or more times. The second connection portion 117 having the spring portion 130 may be alternately disposed apart from the second connection portion 117 having no spring portion 130. The wire thickness of the spring unit 130 may be different from the thickness of the wire of the connection unit 111. If the thicknesses of the spring portions 130 and the connecting portions 111 are different from each other, the stiffness of the retainer 100 can be varied depending on the circumferential position of the retainer 100. [

The ball bearing retainer according to the present invention has been described with reference to the embodiments shown in the drawings, but it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: Ball Bearing retainer
110: accommodating portion 111: first connecting portion
113: Support part 115: Pocket part
117: second connection part 130: spring part

Claims (9)

The ball 30 is provided between the inner ring and the outer ring and includes a plurality of balls 30 provided between the inner ring and the outer ring. The ball 30 is provided between the inner ring and the outer ring, A plurality of receiving portions 110 to be inserted are formed along the circumferential direction and are made of wires;
The accommodating portion 110 includes two support portions 113 spaced in the circumferential direction and facing each other and both ends connected to one end portion of the two support portions 113 extending in the circumferential direction and forming the accommodating portion 110 And a first connection part (111) forming a receiving part (110) together with the supporting part (113);
And the second connecting part 117 is connected to the other end of the supporting part 113 of the adjacent receiving part 110. The ball bearing Retainer. 2. The ball bearing according to claim 1, wherein the support part (113) is formed by a circular arc and is supported by a support part (113) wrapping the ball (30) inserted in the receiving part (110) . The ball bearing retainer according to claim 1, wherein the radial inward gap between the support portions (113) of the two support portions (113) constituting the accommodating portion (110) is smaller than the radial outward gap . 2. The ball bearing retainer according to claim 1, wherein both ends in the circumferential direction of the ball (30) inserted into the accommodating portion (110) protrude in the circumferential direction beyond the support portion (113). 3. The ball bearing retainer according to claim 2, wherein the support portion (113) is formed in a range of 180 DEG &lt;? &Lt; 360 DEG and an end portion of the support portion (113) faces away from each other. 3. The ball bearing according to claim 2, wherein the support portion (113) is formed in a range of 180 DEG &lt;?, The support portion (113) is formed in a spiral shape and the end portions are spaced apart in the circumferential direction Retainer. 2. The ball bearing retainer according to claim 1, wherein the second connection part (117) is provided with a spring part (130) coiled along the circumferential direction. 8. The apparatus according to claim 7, wherein the first connection part (111) of the accommodation part (110) of at least one of the plurality of accommodation parts is connected to the other end part of the two support parts (113) constituting the accommodation part (110) ;
One end of the second connection part 117 is connected to one end of the support part 113 and the other end of the second connection part 117 is connected to the neighboring reception part 110 To the other end of the support portion 113 of the support portion 113;
Wherein the first connecting portions (111) of the accommodating portion (110) adjacent to the accommodating portion (110) are staggered in the circumferential direction. The ball retaining retainer according to claim 7, wherein a thickness of the wire of the spring portion (130) is different from a wire thickness of the connection portion (111).
KR1020150102148A 2015-07-20 2015-07-20 Retainer for ball bearing KR20170010920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150102148A KR20170010920A (en) 2015-07-20 2015-07-20 Retainer for ball bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150102148A KR20170010920A (en) 2015-07-20 2015-07-20 Retainer for ball bearing

Related Child Applications (1)

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KR1020170026077A Division KR20170023927A (en) 2017-02-28 2017-02-28 Retainer for ball bearing

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KR20170010920A true KR20170010920A (en) 2017-02-02

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KR1020150102148A KR20170010920A (en) 2015-07-20 2015-07-20 Retainer for ball bearing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220063151A (en) * 2019-11-08 2022-05-17 히하이스트 가부시키가이샤 Retaining rings and linear bearings for linear bearings

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140000647A (en) 2012-06-25 2014-01-03 로베르트 보쉬 게엠베하 Eccentric rolling bearing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140000647A (en) 2012-06-25 2014-01-03 로베르트 보쉬 게엠베하 Eccentric rolling bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220063151A (en) * 2019-11-08 2022-05-17 히하이스트 가부시키가이샤 Retaining rings and linear bearings for linear bearings

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