WO2023200188A1 - 베어링 리테이너 - Google Patents

베어링 리테이너 Download PDF

Info

Publication number
WO2023200188A1
WO2023200188A1 PCT/KR2023/004731 KR2023004731W WO2023200188A1 WO 2023200188 A1 WO2023200188 A1 WO 2023200188A1 KR 2023004731 W KR2023004731 W KR 2023004731W WO 2023200188 A1 WO2023200188 A1 WO 2023200188A1
Authority
WO
WIPO (PCT)
Prior art keywords
retainer
protrusion
groove
coupling
reinforcing
Prior art date
Application number
PCT/KR2023/004731
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
장건우
Original Assignee
위아코퍼레이션 주식회사
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 위아코퍼레이션 주식회사 filed Critical 위아코퍼레이션 주식회사
Priority to CN202380010157.XA priority Critical patent/CN117222820A/zh
Priority to JP2023552293A priority patent/JP2024521541A/ja
Publication of WO2023200188A1 publication Critical patent/WO2023200188A1/ko

Links

Images

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
    • F16C33/38—Ball cages
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings

Definitions

  • the present invention relates to a retainer for a ball bearing that can improve strength.
  • Bearing assemblies are used for the purpose of allowing relative movement of one component or assembly in relation to another component or assembly.
  • a bearing assembly generally consists of an outer ring and an inner ring, with balls or rollers interposed between them to allow relative movement of the inner ring with respect to the outer ring.
  • multiple balls or rollers are coupled to a retainer to prevent separation and maintain a constant distance.
  • a conventional bearing retainer has an open entrance portion 12 of the retainer into which the ball 20 is inserted. For this reason, when the bearing is used for a long time, the inlet portion 12 where the ball 20 is inserted is worn, causing the ball 20 to fall out of the retainer groove 14.
  • Japanese Patent Laid-Open No. 2007-40383 discloses a bearing retainer that can solve the problems of the structure shown in Figure 1.
  • the bearing retainer described in the prior art document has an advantage in that the ball does not easily fall out because the upper and lower portions of the ball insert are closed.
  • the bearing retainer described in the prior art literature has a problem in that the protrusion for coupling is easily broken and thus has a problem of poor durability.
  • the present invention was developed to solve the above-mentioned problems, and the present invention seeks to provide a bearing retainer with improved durability by reinforcing strength.
  • a bearing retainer includes a first retainer and a second retainer having the same shape and coupled to each other, the first retainer having a semicircular shape and a ball insertion groove into which a ball is inserted, and a ball insertion groove
  • the bearing retainer according to the present invention may have one or more of the following embodiments.
  • the first retainer may have a ring-shaped body, the engaging protrusion may protrude from the upper end of the body, and the reinforcing protrusion may be formed up to the upper end of the engaging protrusion.
  • the first retainer has a ring-shaped body, a coupling groove is formed concavely at the upper end of the body, and a reinforcing protrusion formed in the coupling groove may be formed to completely cover the coupling groove along the axial direction.
  • a plurality of engaging protrusions and engaging grooves may be formed alternately along the circumference of the first retainer.
  • the reinforcing protrusions and inner circumferential grooves of the first retainer and the second retainer may be continuously connected.
  • the first retainer has a ring-shaped body, and the reinforcing protrusion formed in the coupling groove may have the same height as the body.
  • the present invention can provide a bearing retainer with improved durability by reinforcing strength.
  • 1 is a diagram showing a conventional ball bearing retainer.
  • Figure 2 is a perspective view illustrating a bearing retainer according to a first embodiment of the present invention.
  • Figure 3 is an exploded perspective view of the bearing retainer illustrated in Figure 2.
  • Figure 4 is a top view illustrating the first retainer.
  • FIG. 5 is a diagram illustrating a portion of the outer peripheral surface of the first retainer.
  • Figure 6 is a cross-sectional view taken along line AA of Figure 4.
  • Figure 7 is a cross-sectional view taken along line BB in Figure 4.
  • FIG. 2 is a perspective view illustrating the bearing retainer 100 according to the first embodiment of the present invention
  • Figure 3 is an exploded perspective view of the bearing retainer 100 illustrated in Figure 2.
  • FIG. 4 is a plan view illustrating the first retainer 110
  • FIG. 5 is a view illustrating a portion of the outer peripheral surface 124 of the first retainer 110.
  • FIG. 6 is a cross-sectional view taken along line AA of FIG. 4
  • FIG. 7 is a cross-sectional view taken along line BB of FIG. 4.
  • the second retainer 150 coupled to the first retainer 110 is indicated by a dotted line.
  • first retainer 110 and the second retainer 150 of the bearing retainer 100 have the same structure, the following description will focus on the first retainer 110.
  • the bearing retainer 100 is formed by combining a first retainer 110 and a second retainer 150 of the same shape.
  • the first retainer 110 and the second retainer 150 are combined to form a circular ball insertion groove 112 into which a spherical ball (not shown) is inserted.
  • the ball insertion groove 112 is open in the outer and inner circumferential directions of the retainer 100, and its upper and lower surfaces have a semicircular shape and are closed.
  • the first retainer 110 and the second retainer 150 are coupled to each other to form one outer peripheral surface. That is, the first retainer 110 and the second retainer 150 each have an outer peripheral surface 124 having the same size and shape, and the outer peripheral surface 124 of the first retainer 110 and the second retainer 150 are coupled to each other. ) is formed continuously to form the outer peripheral surface of the bearing retainer 100 without any steps.
  • the first retainer 110 and the second retainer 150 are coupled to each other to form one inner peripheral surface. That is, the first retainer 110 and the second retainer 150 each have an inner peripheral surface 126 having the same size and shape, and the inner peripheral surface 126 of the first retainer 110 and the second retainer 150 are coupled to each other. ) is formed continuously to form the inner peripheral surface of the bearing retainer 100 without any steps.
  • first retainer 110 and the second retainer 150 are coupled to each other to have a hollow cylindrical shape.
  • the inner ring of the bearing (not shown) may be inserted into the bearing retainer 100, and the outer ring of the bearing (not shown) may be inserted into the outside of the bearing retainer 100.
  • a reinforcing protrusion 132 is formed at a position corresponding to the engaging protrusion 114 and the engaging groove 130 on the inner peripheral surface 126 of the first retainer 110.
  • the reinforcing protrusion 132 reinforces the thickness of the coupling protrusion 114 and the coupling groove 130 in the first retainer 110.
  • the coupling protrusion 114 reinforces the strength of the coupling groove 130.
  • An inner peripheral groove 134 is formed at a position corresponding to the ball insertion groove 112 on the inner peripheral surface 126 of the first retainer 110.
  • the inner peripheral groove 134 corresponds to a portion in which the reinforcing protrusion 132 is not formed. Due to the inner peripheral groove 134, frictional resistance is reduced on the inner peripheral surface of the bearing retainer 100, and foreign substances, etc. can be easily discharged.
  • the first retainer 110 and the second retainer 150 may be manufactured by injection molding or machining using plastic resin.
  • the first retainer 110 has a circular ring shape, and at one end thereof, a plurality of ball insertion grooves 112, engaging protrusions 114, and engaging grooves 130 are formed at regular intervals. That is, a plurality of ball insertion grooves 112 are arranged at regular intervals along the circumference of the circular first retainer 110 (illustrated as 10 in FIG. 4). And between the ball insertion grooves 112, a plurality of engaging protrusions 114 and engaging grooves 130 (5 each in FIG. 4 are illustrated) are alternately arranged.
  • the first retainer 110 has a circular body 120.
  • a center hole 122 is formed in the center of the body 120.
  • the body 120 has an outer peripheral surface 124 and an inner peripheral surface 126.
  • a plurality of ball insertion grooves 112, coupling protrusions 114, and coupling grooves 130 are formed at one end of the body 120.
  • the other end of the sea 120 corresponds to a plane having a ring shape.
  • the ball insertion groove 112 has a semicircular shape and its front and rear surfaces are open.
  • the ball insertion groove 112 of the first retainer 110 communicates with the ball insertion groove 112 of the second retainer 150 to form a circular ball insertion groove 112 (see FIG. 2).
  • the ball insertion groove 112 has a pair of groove ends 113 (see Figure 4) at both ends.
  • a pair of groove ends 113 are formed parallel to each other. Additionally, the pair of groove ends 113 are formed parallel to a straight line passing through the center of the center hole 112. Due to this, the ball (not shown) inserted into the ball insertion groove 112 can be smoothly rolled and positioned correctly without being biased toward either the outer or inner circumferential surface of the retainer 100.
  • the engaging protrusion 114 is formed between adjacent ball insertion grooves 112. And a stopper 118 having a balanced trapezoidal shape is formed between the groove end 113 of the ball insertion groove 112 and the engaging protrusion 114.
  • the stopper 118 is formed parallel to one surface of the body 120 and makes surface contact with the stopper 118 of the second retainer 150.
  • the coupling protrusion 114 protrudes upward from the stopper 118 and has a circular tip.
  • the circular tip allows the coupling protrusion 114 to be easily pressed into the coupling groove 130.
  • side grooves 116 are formed on the left and right sides of one coupling protrusion 114.
  • the side grooves 116 are concave and symmetrically formed on the left and right sides of the coupling protrusion 114.
  • the inner protrusion 131 formed in the coupling groove 130 is press-fitted into the side groove 116.
  • the first retainer 110 has a plurality of coupling grooves 130.
  • the first retainer 110 according to this embodiment is illustrated as having five coupling grooves 130 formed between the ball insertion grooves 112.
  • the coupling groove 130 has the same concave shape as the coupling protrusion 114.
  • the entrance portion of the coupling groove 130 is formed at an angle, so that the coupling protrusion 114 can be easily inserted.
  • the portion forming the coupling groove 130 has a certain elasticity, the coupling protrusion 114 can be pressed in through elastic deformation.
  • a reinforcing protrusion 132 is formed on the inner peripheral surface of the first retainer 110 at a position corresponding to the engaging protrusion 114 and the engaging groove 130.
  • the reinforcing protrusion 132 has a certain thickness and reinforces the thickness of the body 120 of the first retainer 110 inward. As a result, the strength of the coupling protrusion 114 and the coupling groove 130 corresponding to the assembly portion of the bearing retainer 100 can be strengthened, thereby improving durability.
  • the reinforcing protrusions 132 may be formed to have the same curved surface as the inner peripheral surface 126, and a plurality of reinforcing protrusions 132 may be formed to have the same radius of curvature. And the plurality of reinforcing protrusions 132 may all have the same width and the same shape. Additionally, the height of the reinforcing protrusion 132 may be formed to be the same as the height of the body 120 or the coupling protrusion 114.
  • the reinforcing protrusion 132 formed in the coupling groove 130 may completely cover the inner peripheral surface 126 of the coupling groove 130 along the entire height direction of the body 120. Due to this, the coupling groove 130 has a structure sealed in the direction of the center hole 122 by the reinforcing protrusion 132.
  • the reinforcing protrusions 132 of the coupling groove 130 formed in this way serve to reinforce the strength of the coupling groove 130 and block the inflow of contaminants.
  • the reinforcing protrusion 132 formed on the coupling protrusion 114 may be formed from the lower end of the body 120 to the upper end of the coupling protrusion 114 (see FIG. 7).
  • the reinforcing protrusion 132 formed on the coupling protrusion 114 serves to reinforce the strength of the protruding coupling protrusion 114.
  • An inner peripheral groove 134 is formed between the reinforcing protrusions 132 on the inner peripheral surface of the first retainer 110.
  • the inner peripheral groove 134 is formed at a position corresponding to the ball insertion groove 112, and reinforcing protrusions 132 are formed on both left and right sides.
  • the inner peripheral groove 134 may correspond to a square-shaped groove formed by the reinforcing protrusion 132.
  • the frictional resistance of the inner peripheral surface 126 of the bearing retainer 100 may be reduced by the inner peripheral groove 134. Additionally, contaminants generated on or within the bearing retainer 100 can be easily discharged to the outside through the inner peripheral groove 134.
  • the second retainer 150 has the same shape as the first retainer 110 and is coupled to each other.
  • the bearing retainer 100 according to this embodiment has the advantage of facilitating manufacturing and assembly by having the first retainer 110 and the second retainer 150 have the same shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
PCT/KR2023/004731 2022-04-11 2023-04-07 베어링 리테이너 WO2023200188A1 (ko)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202380010157.XA CN117222820A (zh) 2022-04-11 2023-04-07 轴承保持器
JP2023552293A JP2024521541A (ja) 2022-04-11 2023-04-07 軸受リテーナ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2022-0044266 2022-04-11
KR1020220044266A KR102457930B1 (ko) 2022-04-11 2022-04-11 베어링 리테이너

Publications (1)

Publication Number Publication Date
WO2023200188A1 true WO2023200188A1 (ko) 2023-10-19

Family

ID=83805949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2023/004731 WO2023200188A1 (ko) 2022-04-11 2023-04-07 베어링 리테이너

Country Status (5)

Country Link
JP (1) JP2024521541A (zh)
KR (1) KR102457930B1 (zh)
CN (1) CN117222820A (zh)
TW (1) TW202340622A (zh)
WO (1) WO2023200188A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102457930B1 (ko) * 2022-04-11 2022-10-24 위아코퍼레이션 주식회사 베어링 리테이너

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324323A (ja) * 1989-06-12 1991-02-01 Emerson Electric Co ボールベアリング組立体用ボールセパレータ
JP2007040383A (ja) * 2005-08-02 2007-02-15 Nsk Ltd 玉軸受用保持器及び玉軸受
KR20170106779A (ko) * 2016-03-14 2017-09-22 주식회사 베어링아트 볼 베어링 케이지
KR20190070754A (ko) * 2017-12-13 2019-06-21 셰플러코리아(유) 변형 강도가 향상된 볼 베어링용 케이지
US20220025929A1 (en) * 2020-07-27 2022-01-27 Schaeffler Technologies AG & Co. KG Single-piece high-speed bearing cage
KR102457930B1 (ko) * 2022-04-11 2022-10-24 위아코퍼레이션 주식회사 베어링 리테이너

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324323A (ja) * 1989-06-12 1991-02-01 Emerson Electric Co ボールベアリング組立体用ボールセパレータ
JP2007040383A (ja) * 2005-08-02 2007-02-15 Nsk Ltd 玉軸受用保持器及び玉軸受
KR20170106779A (ko) * 2016-03-14 2017-09-22 주식회사 베어링아트 볼 베어링 케이지
KR20190070754A (ko) * 2017-12-13 2019-06-21 셰플러코리아(유) 변형 강도가 향상된 볼 베어링용 케이지
US20220025929A1 (en) * 2020-07-27 2022-01-27 Schaeffler Technologies AG & Co. KG Single-piece high-speed bearing cage
KR102457930B1 (ko) * 2022-04-11 2022-10-24 위아코퍼레이션 주식회사 베어링 리테이너

Also Published As

Publication number Publication date
CN117222820A (zh) 2023-12-12
KR102457930B1 (ko) 2022-10-24
TW202340622A (zh) 2023-10-16
JP2024521541A (ja) 2024-06-03

Similar Documents

Publication Publication Date Title
WO2023200188A1 (ko) 베어링 리테이너
GB2147665A (en) A ball bearing cage
US5906441A (en) Resin made cage for an angular ball bearing
WO2016036057A1 (ko) 돌출부를 포함하는 파이프 연결용 실링부재
US6505969B2 (en) Interlocking linear roller bearing
US5026325A (en) Constant velocity ratio plunging universal joint
JPS6347930B2 (zh)
EP2239473B1 (en) Rolling bearing cage
US4572591A (en) Ball bearing arrangement for longitudinal movement on a shaft or the like
US4040687A (en) Ball retainer for ball bearings
US11143240B2 (en) Inner ring unit and tapered roller bearing
JP3702019B2 (ja) 固定式等速ジョイント
GB1564290A (en) Linear recirculating ball bearing
DE60210375D1 (de) Kugellagerkäfig und Kugellager mit diesem Käfig
GB2136889A (en) A rolling bearing cage
GB2049070A (en) Bearings
US10364849B2 (en) Constant-velocity joint
WO2018016833A1 (ko) 드라이브 샤프트의 플런징 어셈블리 및 이를 포함하는 드라이브 샤프트
WO2022065639A1 (ko) Pvc 배관 연결장치
WO2018117679A1 (ko) 트라이포드 등속 조인트
WO2023058935A1 (ko) 크로스 롤러 베어링용 롤러 및 이를 구비한 크로스 롤러 베어링
WO2012148058A1 (ko) 리니어 베어링
WO2021172737A1 (ko) 트라이포드 조인트
KR101813156B1 (ko) 고정형 등속 조인트
JPH09177810A (ja) 等速自在継手用保持器及びその組み込み方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 202380010157.X

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2023552293

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23788539

Country of ref document: EP

Kind code of ref document: A1