JP2006258174A - Synthetic resin retainer - Google Patents

Synthetic resin retainer Download PDF

Info

Publication number
JP2006258174A
JP2006258174A JP2005075453A JP2005075453A JP2006258174A JP 2006258174 A JP2006258174 A JP 2006258174A JP 2005075453 A JP2005075453 A JP 2005075453A JP 2005075453 A JP2005075453 A JP 2005075453A JP 2006258174 A JP2006258174 A JP 2006258174A
Authority
JP
Japan
Prior art keywords
engaging
engagement
annular
synthetic resin
claw
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
Application number
JP2005075453A
Other languages
Japanese (ja)
Inventor
Tsutomu Mizutani
力 水谷
Kiyoshi Yamamoto
喜芳 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTN Corp
Nakanishi Metal Works Co Ltd
Original Assignee
NTN Corp
Nakanishi Metal Works Co Ltd
NTN Toyo Bearing Co Ltd
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 NTN Corp, Nakanishi Metal Works Co Ltd, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Priority to JP2005075453A priority Critical patent/JP2006258174A/en
Publication of JP2006258174A publication Critical patent/JP2006258174A/en
Pending legal-status Critical Current

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
    • F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
    • F16C33/3862—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together
    • F16C33/3875—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages comprising two annular parts joined together made from plastic, e.g. two injection moulded parts joined by a snap fit
    • 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
    • F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips

Landscapes

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin retainer of which engagement claw does not easily wear when the engagement claw is inserted in an engagement hole and which does not easily create play between annular bodies. <P>SOLUTION: In a synthetic resin retainer having a hemispherical pocket 2 storing a ball on facing surfaces of two annular bodies 1a, 1b facing in an axial direction formed at even intervals in a circumference direction, having an engagement claw 4 projecting in an axial direction provided between adjacent pockets 2, 2 of one annular body 1a, having an engagement hole 5 to which the engagement claw 4 is inserted formed between adjacent pockets 2, 2 of another annular body 1b, and joining the annular bodies 1a, 1b by engaging the engagement claw 4 inserted in the engagement hole 5 with the annular body 1b, an expanding slot 6 is formed on a tip of the engagement claw 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、主として高速回転用玉軸受に組み込まれる合成樹脂製保持器に関する。   The present invention relates to a synthetic resin cage mainly incorporated in a ball bearing for high-speed rotation.

合成樹脂製保持器として、下記特許文献１に記載されたものが知られている。この保持器は、軸方向に向き合う２枚の環状体からなり、各環状体の対向面にはボールを収容する半球状のポケットが周方向に等間隔に形成され、隣り合うポケット間には軸方向に突出する係合爪と、その係合爪を係合させる係合孔とが形成されている。   As a synthetic resin cage, one described in Patent Document 1 below is known. This cage is composed of two annular bodies facing each other in the axial direction, and hemispherical pockets for accommodating balls are formed at equal intervals in the circumferential direction on the opposing surface of each annular body. An engaging claw protruding in the direction and an engaging hole for engaging the engaging claw are formed.

しかし、この保持器は、係合孔の入口が係合爪よりも小さいので、係合爪を係合孔に挿入する際に係合爪が強く擦られて摩耗し、その摩耗によって２枚の環状体の間にガタが生じることがあった。ガタが生じると、保持器が軸受軌道輪や軸受シールに接触して軸受性能が劣化するおそれがあった。   However, since the entrance of the engagement hole is smaller than the engagement claw, the retainer is worn by rubbing the engagement claw strongly when inserting the engagement claw into the engagement hole. In some cases, backlash occurs between the annular bodies. When the play occurs, the cage may come into contact with the bearing race or the bearing seal to deteriorate the bearing performance.

特開２００３−３４３５７１号公報JP 2003-343571 A

この発明が解決しようとする課題は、係合爪を係合孔に挿入する際に係合爪が摩耗しにくく、環状体の間にガタを生じにくい合成樹脂製保持器を提供することである。   The problem to be solved by the present invention is to provide a synthetic resin cage in which the engaging claw is less likely to be worn when the engaging claw is inserted into the engaging hole, and the play is less likely to occur between the annular members. .

上記の課題を解決するために、軸方向に向き合う２枚の環状体の対向面にボールを収容する半球状のポケットを周方向に等間隔に形成し、軸方向に突出する係合爪を一方の前記環状体の隣り合うポケット間に設け、その係合爪を挿入する係合孔を他方の前記環状体の隣り合うポケット間に形成し、前記係合孔に挿入した前記係合爪を前記他方の環状体に係合させて前記２枚の環状体を結合させる合成樹脂製保持器において、前記係合爪の先端に割り溝を形成した。   In order to solve the above problems, hemispherical pockets for accommodating balls are formed at equal intervals in the circumferential direction on the opposing surfaces of the two annular members facing in the axial direction, and the engaging claws protruding in the axial direction are Provided between adjacent pockets of the annular body, an engaging hole for inserting the engaging claw is formed between adjacent pockets of the other annular body, and the engaging claw inserted into the engaging hole is In the synthetic resin cage that is engaged with the other annular body to join the two annular bodies, a split groove is formed at the tip of the engaging claw.

係合爪を係合孔に挿入する際に、係合爪の先端が割り溝を狭める方向に弾性変形するので、係合爪が摩耗しにくく、２枚の環状体の間にガタが生じにくい。   When the engagement claw is inserted into the engagement hole, the front end of the engagement claw is elastically deformed in the direction of narrowing the split groove, so that the engagement claw is less likely to be worn and the backlash between the two annular bodies is less likely to occur. .

図１に、この発明の合成樹脂製保持器の実施形態を示す。この保持器は、軸方向に向き合う２枚の環状体１ａ、１ｂからなる。環状体１ａ、１ｂの対向面には、玉軸受のボールＢを収容する半球状のポケット２が形成されており、このポケット２は、図２に示すように周方向に等間隔に形成されている。   FIG. 1 shows an embodiment of the synthetic resin cage of the present invention. The cage is composed of two annular bodies 1a and 1b facing in the axial direction. A hemispherical pocket 2 for accommodating the ball B of the ball bearing is formed on the opposing surfaces of the annular bodies 1a and 1b. The pockets 2 are formed at equal intervals in the circumferential direction as shown in FIG. Yes.

環状体１ａの隣り合うポケット２、２の間には、図３（ａ）に示すように、他方の環状体１ｂに突き合わせる合わせ面３から軸方向に突出する係合爪４が設けられている。環状体１ｂの隣り合うポケット２、２の間には、軸方向に貫通する係合孔５が形成されており、この係合孔５に環状体１ａの係合爪４が挿入される。その係合爪４の先端は、図３（ｂ）に示すように割り溝６で二股に分割されており、割り溝６を狭める方向に弾性変形できるようになっている。また、係合爪４の先端には鈎部７が形成されており、係合爪４の先端が弾性復元することにより鈎部７が係合孔５の縁に係合する。   Between the adjacent pockets 2 and 2 of the annular body 1a, as shown in FIG. 3A, there is provided an engaging claw 4 that protrudes in the axial direction from the mating surface 3 that abuts against the other annular body 1b. Yes. An engagement hole 5 penetrating in the axial direction is formed between adjacent pockets 2, 2 of the annular body 1 b, and the engagement claw 4 of the annular body 1 a is inserted into the engagement hole 5. The tip of the engaging claw 4 is divided into two forks by a split groove 6 as shown in FIG. 3 (b), and can be elastically deformed in the direction of narrowing the split groove 6. Further, a flange portion 7 is formed at the tip of the engagement claw 4, and the flange portion 7 engages with the edge of the engagement hole 5 by elastic recovery of the tip of the engagement claw 4.

この環状体１ａ、１ｂは合成樹脂の成形品からなる。合成樹脂としては、たとえばポリフェニレンサルファイド（ＰＰＳ）等のエンジニアリングプラスチックを用いることができる。   The annular bodies 1a and 1b are made of a synthetic resin molded product. As the synthetic resin, for example, engineering plastics such as polyphenylene sulfide (PPS) can be used.

この保持器は、たとえば次のようにして組み立てることができる。まず、環状体１ａ、１ｂを対向配置し、その環状体１ａ、１ｂを互いに近づけて係合爪４を係合孔５に挿入する。さらに環状体１ａ、１ｂを互いに近づけて合わせ面３を互いに接触させると、係合爪４の鈎部７が係合孔５を通り抜けてその係合孔５の縁に係合し、環状体１ａ、１ｂが互いに結合する。   This cage can be assembled, for example, as follows. First, the annular bodies 1 a and 1 b are arranged to face each other, and the engagement claws 4 are inserted into the engagement holes 5 with the annular bodies 1 a and 1 b being brought close to each other. Further, when the annular bodies 1a and 1b are brought close to each other and the mating surfaces 3 are brought into contact with each other, the flange portion 7 of the engagement claw 4 passes through the engagement hole 5 and engages with the edge of the engagement hole 5, thereby 1b bind to each other.

この合成樹脂製保持器を用いると、係合爪４を係合孔５に挿入する際に、係合爪４の先端が割り溝６を狭める方向に弾性変形するので、鈎部７に作用する摩擦力が小さい。そのため、係合爪４の鈎部７が摩耗しにくく、２枚の環状体１ａ、１ｂの間でガタが生じにくい。   When this synthetic resin cage is used, when the engaging claw 4 is inserted into the engaging hole 5, the tip of the engaging claw 4 is elastically deformed in the direction of narrowing the split groove 6, so that it acts on the flange portion 7. The frictional force is small. Therefore, the collar part 7 of the engaging claw 4 is not easily worn, and rattling is unlikely to occur between the two annular bodies 1a and 1b.

環状体１ａ、１ｂのポケット２の両端には、図３（ａ）に示すようにグリース溜りをなす凹部８を形成すると好ましい。このようにすれば、凹部８に保持されたグリースが、ボールＢとポケット２の内面とを潤滑して、ボールＢと保持器の接触による摩耗粉や摩擦熱の発生を抑制する。   As shown in FIG. 3 (a), it is preferable to form recesses 8 that form a grease reservoir at both ends of the pockets 2 of the annular bodies 1a and 1b. In this way, the grease held in the recess 8 lubricates the ball B and the inner surface of the pocket 2 and suppresses generation of wear powder and frictional heat due to contact between the ball B and the cage.

また、環状体１ａ、１ｂには、図に示すように係合爪４と隣接して軸方向に貫通する開口９を形成すると好ましい。開口９を形成すると、係合爪４のアンダカット部１０から開口９を通じて成形金型を抜くことができるので、環状体１ａ、１ｂの成形が容易である。   Moreover, it is preferable to form the opening 9 which penetrates to the annular bodies 1a and 1b in the axial direction adjacent to the engagement nail | claw 4 as shown in a figure. When the opening 9 is formed, the molding die can be removed from the undercut portion 10 of the engaging claw 4 through the opening 9, so that the annular bodies 1a and 1b can be easily molded.

係合爪４は、図では径方向に突出する鈎部７を先端に形成して環状体１ｂに係合するようにしたが、たとえば鈎部７を周方向に突出させるようにしてもよく、２枚の環状体１ａ、１ｂを結合させる形状であればよい。周方向に突出させて鈎部７を形成する場合、割り溝６の向きを変える必要がある。   In the figure, the engaging claw 4 is formed with a flange portion 7 projecting in the radial direction at the tip to engage with the annular body 1b. For example, the flange portion 7 may be protruded in the circumferential direction. Any shape may be used as long as the two annular bodies 1a and 1b are joined. When projecting in the circumferential direction to form the flange 7, it is necessary to change the direction of the split groove 6.

図では、係合爪４の鈎部７が係合孔５の縁に係合するようにしたが、たとえば係合孔５の内面に段部を形成し、その段部に係合爪４の鈎部７が係合するようにしてもよい。要は、係合孔５に挿入した係合爪４が係合して環状体１ａ、１ｂを結合すればよい。   In the figure, the flange portion 7 of the engagement claw 4 is engaged with the edge of the engagement hole 5. However, for example, a step portion is formed on the inner surface of the engagement hole 5, and the engagement claw 4 is formed on the step portion. You may make it the collar part 7 engage. In short, the engagement claws 4 inserted into the engagement holes 5 may be engaged to couple the annular bodies 1a and 1b.

図に示すように、係合爪４と係合孔５を周方向に交互に配置して、環状体１ａ、１ｂを同一形状とすると、生産コストの面で有利となり好ましい。   As shown in the figure, it is preferable that the engaging claws 4 and the engaging holes 5 are alternately arranged in the circumferential direction so that the annular bodies 1a and 1b have the same shape, which is advantageous in terms of production cost.

また、係合爪４と係合孔５は、隣り合うポケット２、２の間に周方向に並べて配置してもよい。このようにすれば、ポケット２が奇数個のときにも、ポケット間の係合爪４と係合孔５の配置を統一して、環状体１ａ、１ｂを同一形状とすることができる。   Further, the engaging claws 4 and the engaging holes 5 may be arranged side by side in the circumferential direction between the adjacent pockets 2 and 2. In this way, even when the number of the pockets 2 is an odd number, the arrangement of the engaging claws 4 and the engaging holes 5 between the pockets can be unified to make the annular bodies 1a and 1b have the same shape.

上記実施形態では、係合爪４を環状体１ａ、１ｂの両方に形成し、係合孔５も環状体１ａ、１ｂの両方に形成したが、たとえば図４に示すように、係合爪４を環状体１ａにのみ形成し、係合孔５を他方の環状体１ｂにのみ形成してもよい。   In the above embodiment, the engaging claws 4 are formed on both the annular bodies 1a and 1b, and the engaging holes 5 are also formed on both the annular bodies 1a and 1b. For example, as shown in FIG. May be formed only in the annular body 1a, and the engagement hole 5 may be formed only in the other annular body 1b.

この発明の合成樹脂製保持器の実施形態を示す一部拡大斜視図The partially expanded perspective view which shows embodiment of the synthetic resin cage of this invention 同上の合成樹脂製保持器の環状体を示す平面図The top view which shows the annular body of a synthetic resin cage same as the above （ａ）は同上の合成樹脂製保持器の一部を示す断面図、（ｂ）は（ａ）のＸ−Ｘ線に沿った断面図(A) is sectional drawing which shows a part of synthetic resin cage same as the above, (b) is sectional drawing along the XX line of (a). 同上の合成樹脂製保持器の変形例を示す平面図The top view which shows the modification of a synthetic resin cage same as the above

符号の説明Explanation of symbols

１ａ、１ｂ 環状体
２ ポケット
４ 係合爪
５ 係合孔
６ 割り溝
Ｂ ボール 1a, 1b Annular body 2 Pocket 4 Engaging claw 5 Engaging hole 6 Split groove B Ball

Claims (1)

軸方向に向き合う２枚の環状体の対向面にボールを収容する半球状のポケットを周方向に等間隔に形成し、軸方向に突出する係合爪を一方の前記環状体の隣り合うポケット間に設け、その係合爪を挿入する係合孔を他方の前記環状体の隣り合うポケット間に形成し、前記係合孔に挿入した前記係合爪を前記他方の環状体に係合させて前記２枚の環状体を結合させる合成樹脂製保持器において、前記係合爪の先端に割り溝を形成したことを特徴とする合成樹脂製保持器。   Hemispherical pockets for accommodating the balls are formed at equal intervals in the circumferential direction on the opposing surfaces of the two annular members facing in the axial direction, and the engaging claws protruding in the axial direction are formed between adjacent pockets of one annular member. An engaging hole for inserting the engaging claw is formed between adjacent pockets of the other annular body, and the engaging claw inserted into the engaging hole is engaged with the other annular body. A synthetic resin cage for joining the two annular bodies, wherein a split groove is formed at a tip of the engaging claw.
JP2005075453A 2005-03-16 2005-03-16 Synthetic resin retainer Pending JP2006258174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005075453A JP2006258174A (en) 2005-03-16 2005-03-16 Synthetic resin retainer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005075453A JP2006258174A (en) 2005-03-16 2005-03-16 Synthetic resin retainer

Publications (1)

Publication Number Publication Date
JP2006258174A true JP2006258174A (en) 2006-09-28

Family

ID=37097663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005075453A Pending JP2006258174A (en) 2005-03-16 2005-03-16 Synthetic resin retainer

Country Status (1)

Country Link
JP (1) JP2006258174A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022436A (en) * 2011-01-18 2011-04-20 常熟长城轴承有限公司 Retainer for angular contact ball bearing
CN104728305A (en) * 2015-04-09 2015-06-24 无锡华洋滚动轴承有限公司 Double-wedge sealed buckled type reverse stop bearing
DE102015220363A1 (en) * 2015-10-20 2017-05-04 Aktiebolaget Skf Two-piece bearing cage
CN113007221A (en) * 2021-03-18 2021-06-22 宁波市新世纪轴承有限公司 Bearing and assembly quality
US20230193954A1 (en) * 2021-06-30 2023-06-22 C&U Company Limited. Deep groove ball bearing with cage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102022436A (en) * 2011-01-18 2011-04-20 常熟长城轴承有限公司 Retainer for angular contact ball bearing
CN104728305A (en) * 2015-04-09 2015-06-24 无锡华洋滚动轴承有限公司 Double-wedge sealed buckled type reverse stop bearing
DE102015220363A1 (en) * 2015-10-20 2017-05-04 Aktiebolaget Skf Two-piece bearing cage
US9939016B2 (en) 2015-10-20 2018-04-10 Aktiebolaget Skf Two-part bearing cage
DE102015220363B4 (en) * 2015-10-20 2020-08-13 Aktiebolaget Skf Two-part bearing cage
CN113007221A (en) * 2021-03-18 2021-06-22 宁波市新世纪轴承有限公司 Bearing and assembly quality
US20230193954A1 (en) * 2021-06-30 2023-06-22 C&U Company Limited. Deep groove ball bearing with cage
US11867231B2 (en) * 2021-06-30 2024-01-09 C&U Company Limited. Deep groove ball bearing with cage

Similar Documents

Publication Publication Date Title
JP4471864B2 (en) Ball bearing
JP2006258172A (en) Synthetic resin retainer
JP5697367B2 (en) Ball bearing cage and ball bearing
US10247241B2 (en) Rolling bearing
JP2006258174A (en) Synthetic resin retainer
JP4601451B2 (en) Synthetic resin cage and ball bearing
JP4601450B2 (en) Ball bearing
JP2004076778A (en) Synthetic resin cage and deep groove ball bearing
JP2008115903A (en) Cage for rolling bearing and rolling bearing
JP2015017710A (en) Synthetic resin retainer and ball bearing
JP2011256963A (en) Ball bearing holder and ball bearing
JP4612597B2 (en) Synthetic resin cage
JP2006258166A (en) Ball bearing
JP2008064166A (en) Ball bearing
JP2013213555A (en) Synthetic resin retainer and ball bearing
JP2017116008A (en) Rolling bearing
JP2006258165A (en) Ball bearing
WO2016152667A1 (en) Sliding constant velocity universal joint
JP4536632B2 (en) Thrust ball bearing
JP2006017180A (en) Crown retainer made of synthetic resin
JP2007239854A (en) Synthetic resin holder
KR101889296B1 (en) Buckle type cage for rolling bearing
JP2007040421A (en) Cage for rolling bearing
US20180328475A1 (en) Stator
JP2017009110A (en) Slide type constant velocity universal joint