JP3933435B2 - Split cage for rolling bearings - Google Patents

Split cage for rolling bearings Download PDF

Info

Publication number
JP3933435B2
JP3933435B2 JP2001319703A JP2001319703A JP3933435B2 JP 3933435 B2 JP3933435 B2 JP 3933435B2 JP 2001319703 A JP2001319703 A JP 2001319703A JP 2001319703 A JP2001319703 A JP 2001319703A JP 3933435 B2 JP3933435 B2 JP 3933435B2
Authority
JP
Japan
Prior art keywords
connecting portion
opposing
split
side surfaces
retaining
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.)
Expired - Lifetime
Application number
JP2001319703A
Other languages
Japanese (ja)
Other versions
JP2003120680A (en
Inventor
有宏 藤原
浩 関本
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.)
JTEKT Corp
Original Assignee
JTEKT Corp
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 JTEKT Corp filed Critical JTEKT Corp
Priority to JP2001319703A priority Critical patent/JP3933435B2/en
Publication of JP2003120680A publication Critical patent/JP2003120680A/en
Application granted granted Critical
Publication of JP3933435B2 publication Critical patent/JP3933435B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16C33/3812—Ball cages formed of interconnected segments, e.g. chains

Landscapes

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

Description

【０００１】
【発明の属する技術分野】
本発明は、転がり軸受用分割型保持器に関する。
【０００２】
【従来の技術】
ＣＴスキャナー回転ドラム支持用軸受などは、大型であるため、玉を保持する保持器には、分割された複数の分割片を互いに連結して環状に組み立てた分割型保持器が用いられている。従来の分割型保持器には、例えば、特開平９−８８９６８号公報に記載のものがある。
【０００３】
図４は、特開平９−８８９６８号公報に記載の保持器に基づく従来の連結構造を示している。従来の連結構造では、一方の分割片３０に設けられた凸状の第１連結部３１と、他方の分割片３０に設けられた凹状の第２連結部３３とが凹凸嵌合して２つの分割片３０，３０が互いに連結される。
【０００４】
第１連結部３１は、その先端が丸型であり、第２連結部３３もこれに対応して丸型の凹部を有している。
また、従来、第１連結部３１と第２連結部３３とを連結したときに、隣り合う分割片３０，３０の対向面のうち、丸型部分図４において太線で示す部分においては、両対向面間にわずかな隙間が形成されるように第１及び第２連結部の大きさが設定されている。わずかな隙間が存在することで第１連結部３１と第２連結部３３とを嵌合させ易くなっている。
【０００５】
【発明が解決しようとする課題】
保持器に保持された玉は、進み遅れが発生することがあるが、分割型保持器の場合、玉の進み遅れが発生すると、分割片の連結部嵌合が抜けたり、はまったりする。
これは、第１連結部の先端が丸型であるため、分割片同士が離れる方向に力が働くと第２連結部３３が変形しやすく、連結部抜け力が小さいためである。回転中に、連結部３１，３３同士が抜けたり、はまったりすると、異音の発生原因となる。
【０００６】
また、従来の保持器では、隣り合う分割片３０，３０の対向面間にわずかな隙間があるため、この隙間がガタとなり、複数の分割片を連結して環状にすると、全体の形状が図５のように花びら形状となってしまう。このため、高速回転下では保持器が案内面で強く接触し、異音発生の要因となる。
しかも、保持器が花びら形状となると、保持器が案内面で内輪や外輪と強く接触し、保持器摩耗粉が発生しグリースの劣化を促進する。
【０００７】
上記のような従来の問題点に鑑み、本発明は、分割片の連結部における抜け力を高めることを目的とする。また、本発明の他の目的は、異音の発生を防止し低騒音化を図ることにある。
【０００８】
【課題を解決するための手段】
本発明は、上記目的達成のため次の技術的手段を採用した。すなわち、本発明は、転動部材を保持するための帯状の分割片本体と、前記分割片本体の帯長手方向一端に設けられた凸状の第１連結部と、前記分割片本体の帯長手方向他端に設けられた凹状の第２連結部とを備えた保持器分割片を有し、
前記第１連結部は、前記分割片本体の帯長手方向一端から帯長手方向外方へ突出形成された基端部と、この基端部の先端に形成され且つ前記基端部より幅広である抜け止め部とを備えて構成され、
前記第２連結部は、前記第１連結部が凹凸嵌合できるように、前記第１連結部と同形の凹部として形成され、
複数の前記保持器分割片が前記第１連結部と前記第２連結部の凹凸嵌合によって連結されて環状に形成される転がり軸受用分割型保持器において、
前記第１連結部の前記基端部が、幅方向両側に２つの側面を有しており、
前記第１連結部の前記抜け止め部が、幅方向両側の２つの側面と、前記抜け止め部の先端部の幅が先細りとなるように前記抜け止め部の前記各側面の先端側から傾斜して延びる２つの肩面と、この両肩面の先端側の間にあり且つ幅方向と平行な先端面と、前記基端部の前記各側面の先端側から前記抜け止め部の前記各側面の基端側に向かって幅方向外側に延び且つ前記基端部の前記各側面に対する角度が鋭角に形成された２つの後端面と、を有しており、
前記第２連結部が、前記基端部の前記各側面にそれぞれ対向する２つの第１対向面と、前記抜け止め部の前記各側面にそれぞれ対向する２つの第２対向面と、前記各肩面にそれぞれ対向する２つの第３対向面と、前記先端面に対向する第４対向面と、前記各後端面にそれぞれ対向する２つの第５対向面と、を有しており、
前記第１連結部と前記第２連結部とを嵌合させたときに、前記先端面と前記第４対向面との間及び前記各後端面と前記各第５対向面との間に隙間がなく且つ前記各肩面と前記各第３対向面との間に隙間を有するように、前記第１連結部と前記第２連結部とが形成されていることを特徴とする。
【０００９】
第１連結部は、基端部の幅方向両側の側面に対する抜け止め部後端面の角度が鋭角となるように形成され、第２連結部がこの第１連結部と凹凸嵌合するよう同形の凹部であるから、第１連結部が第２連結部から抜けようとしても、抜け止め部後端部と第２連結部との引っ掛かりが強力であり、しかも第１連結部が抜けようとする力は、第２連結部が第１連結部を一層強力に保持する方向に働く。このため、分割片の連結部における抜け力が高まる。
【００１１】
抜け止め部の各肩面と第２連結部の各第３対向面との間に隙間を生じさせることで、凹凸嵌合が容易となって分割型保持器の組立が容易になると共に、抜け止め部の先端面と第２連結部の第４対向面との間及び抜け止め部の各後端面と第２連結部の各第５対向面との間には隙間がなくなるようにしているので、組立を容易にしつつガタの発生を回避することができる。ガタを回避できるため、従来のように保持器が花びら形状となることを防止でき、異音の発生を低減できる。
【００１２】
さらに、前記第１連結部と前記第２連結部とを嵌合させたときに、前記基端部の前記各側面と前記各第１対向面との間及び前記抜け止め部の前記各側面と前記各第２対向面との間に隙間がなくなるように、前記第１連結部及び第２連結部が形成されているのが好ましい。
【００１３】
これによって、分割片の幅方向のガタの発生を防止することができる。
【００１４】
【発明の実施の形態】
以下、図面に基づき、本発明の実施の形態を説明する。図１は、本発明に係る転がり軸受用分割型保持器を構成する保持器分割片１を示している。
保持器分割片１は、円環状の保持器を１２分割した一片であり、全体がプラスチック製である。この保持器分割片１は、帯状の分割片本体２と、分割片本体２の帯長手方向一端に設けられた第１連結部３と、分割片本体２の帯長手方向他端に設けられた第２連結部４とを備えている。
【００１５】
分割片本体２は、長手方向に所定間隔おいて複数のポケット部６を備えている。ポケット部６は、玉又は円筒などの転動部材を保持するために分割片本体２の厚さ方向に貫通した孔として形成されている。
前記第１連結部３は、分割片本体２の帯長手方向一端２ａから長手方向外方へ延長するよう突出形成された凸部であり、前記第２連結部４は、分割片本体２の帯長手方向他端２ｂから長手方向内方へ引っ込んだ凹部である。
【００１６】
第１連結部３と第２連結部４とは凹凸嵌合可能に形成されており、図２及び図３に示すように、一の分割片１ａの第１連結部３と、他の分割片１ｂの第２連結片４とを嵌合させることで２つの分割片１ａ，１ｂを連結でき、同様に１２個の分割片を連結することで円環状の保持器が組み立てられる。
【００１７】
前記第１連結部３は、分割片本体２の帯長手方向一端２ａから外方へ突出形成された基端部８と、前記基端部８の先端側に形成された抜け止め部９とを備えている。
抜け止め部９は、前記基端部８より幅広であり、全体が略矢尻形状とされている。具体的には、幅方向両側に互いに平行な側面９ａ，９ａを有し、これら側面９ａ，９ａの先端側から、幅が先細りテーパ状となるように傾斜した肩面９ｂ，９ｂを有している。更に、抜け止め部９の先端側には幅方向と平行な先端面９ｃが形成され、後端側には、基端部８先端側から前記側面９ａ，９ａまで幅方向両側方に延びる後端面（後端部）９ｄ，９ｄとが形成されている。
【００１８】
前記第２連結部４は、第１連結部３が嵌合できるように、第１連結部３の形状に対応した形状の凹部として形成されている。分割片本体２の長手方向他端２ｂに第２連結部４が形成されていることで、分割片本体２の長手方向他端２ｂは二股状とされている。
【００１９】
具体的には、第２連結部４は、第１連結部３の嵌合時に、第１連結部３の基端部幅方向両側の側面（幅方向端部）８ａ，８ａに対向する第１対向面１１ａ，１１ａと、抜け止め部９の側面９ａ，９ａに対向する第２対向面１２ａ，１２ａと、抜け止め部９の肩面９ｂ，９ｂに対向する第３対向面１２ｂ，１２ｂと、抜け止め部９の先端面９ｃに対向する第４対向面１２ｃと、抜け止め部９の後端面９ｄ，９ｄに対向する第５対向面１２ｄ，１２ｄとを有している。
【００２０】
図３に示すように、抜け止め部９の後端面９ｄ，９ｄは、基端部８の先端から幅が拡がるように幅方向に延びているが、これら後端面９ｄ，９ｄは幅方向ｗと平行に延びるのではなく、分割片本体２側へ向かうように幅方向ｗに対して角度βをもって傾斜しつつ幅方向に延びている。このため、基端部側面（幅方向端部）８ａ，８ａに対する抜け止め部後端面（後端部）９ｄ，９ｄの角度αは鋭角となっている。また、後端面９ｄ，９ｄと対向する第２連結部４の第５対向面１２ｄ，１２ｄも同様に傾斜している。このため、分割片本体２の長手方向他端側２ｂは、かぎ型の係合構造となっている。なお、角度αは７０゜であり、角度βは２０゜である。
【００２１】
連結部３，４の嵌合が外れようとする力が働くと、その力は、矢印ｘで示すように第２連結部４の第１対向面１１ａ，１１ａ同士を近接させる方向に働き、第２連結部４の第１対向面１１ａ，１１ａが第１連結部を把持する把持部として機能する。したがって、第１連結部３が抜けようとしても、抜けにくく分割片連結構造における抜け力が向上する。
【００２２】
図４に示す従来の丸型連結部で抜け力を測定したところ約１１５Ｎであったが、本実施形態の矢尻型連結部３，４では抜け力が約６８０Ｎであり、従来のものに比べて約６倍も抜け力が向上した。
【００２３】
第１連結部３と第２連結部４とを嵌合したときに、第１連結部３の肩面９ｂと、第２連結部４の第３対向面１２ｂとの間にはわずかな隙間が形成される。図３では太線で当該隙間を表している。この隙間は約０．２ｍｍに設定されており、この隙間によって第１連結部３と第２連結部４とを嵌合させるのが容易となっている。
【００２４】
一方、２つの分割片１ａ，１ｂの対向する面のうち、肩面９ｂと第３対向面１２ｂ以外の対向する面２ａ，８ａ，９ａ，９ｃ，９ｄ；２ｂ，１１ａ，１２ａ，１２ｃ，１２ｄには、第１連結部３と第２連結部４とを嵌合したときに、隙間が生じないように第１連結部３と第２連結部の形状が設定されている。例えば、基端部８の幅と、両第１対向面１１ａ，１１ａの間隔とは同一に設定されている。
【００２５】
分割片１ａ，１ｂ間において、環状の保持器の周方向分割片の帯長手方向にガタを生じさせないようにするには、（１）分割片本体２の長手方向一端面２ａと長手方向他端面２ｂとの間、（２）抜け止め部９の先端面９ｃと第４対向面１２ｃとの間、（３）抜け止め部９の後端面９ｄと第５対向面１２ｄとの間、の３カ所のうち、少なくとも２カ所における対向面間に隙間が無ければよく、本実施形態では３カ所すべての対向面間で隙間を無くしている。
【００２６】
また、分割片１ａ，１ｂ間において、環状の保持器の幅方向分割片の帯幅方向にガタを生じさせないようにするには、（４）基端部８の側面８ａ，８ａと第１対向面１１ａとの間、（５）抜け止め部９の側面９ａ，９ａと第２対向面１２ａとの間、の２カ所のうち、少なくとも１カ所における対向面間に隙間が無ければよく、本実施形態では２カ所すべての対向面間で隙間を無くしている。
【００２７】
特に、本実施形態では、かぎ型をなす部分である、（１）分割片本体２の長手方向一端面２ａと長手方向他端面２ｂとの間、（３）抜け止め部９の後端面９ｄと第５対向面１２ｄとの間、（４）基端部８の側面８ａ，８ａと第１対向面１１ａとの間、の三カ所で隙間を無くしてガタを防止している。
【００２８】
以上のような分割片１を組み立てた保持器を１２０ｒ／ｍｉｎで回転させ規定荷重を負荷させて試験を行ったところ、異音の発生は認められなかった。したがって、第１連結部３及び第２連結部４の連結構造が保持器において非常に有効であることが確認された。
【００２９】
なお、本発明は上記実施形態に限定されるものではない。例えば、抜け止め部９形状は矢尻型に限定されるものではなく、側面９ａから先端面９ｃに至る形状は曲面や任意の多角形面とすることができる。また、対向面間の隙間を設ける位置も抜け止め部の形状変更に伴い適宜変更できる。
【００３０】
【発明の効果】
本発明によれば、第１連結部は、基端部の幅方向端部に対する抜け止め部後端部の角度が鋭角となるように形成され、第２連結部がこの第１連結部と凹凸嵌合するよう同形の凹部であるから、第１連結部が第２連結部から抜けようとしても、抜け止め部後端部と第２連結部との引っ掛かりが強力であり、しかも第１連結部が抜けようとする力は、第２連結部が第１連結部を一層強力に保持する方向に働く。このため、分割片の連結部における抜け力が高まる。
【００３１】
また、隣り合う分割片の対向面間に少なくとも一部に隙間を生じさせることで、嵌合が容易となって分割型保持器の組立が容易になると共に、隙間が存在すると対向面間にガタを生じさせる部分には隙間がなくなるようにしているので、組立を容易にしつつガタの発生を回避することができ、異音の発生を低減できる。
【図面の簡単な説明】
【図１】分割型保持器を構成する分割片の平面図である。
【図２】嵌合前の第１連結部及び第２連結部を示す一部平面図である。
【図３】嵌合した第１連結部及び第２連結部を示す一部平面図である。
【図４】従来の連結構造図を示す一部平面図である。
【図５】花びら型となった従来の保持器を示す概念図である。
【符号の説明】
１ 保持器分割片
２ 分割片本体
３ 第１連結部
４ 第２連結部
８ 基端部
９ 抜け止め部
９ｂ 肩面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a split cage for a rolling bearing.
[0002]
[Prior art]
Since the CT scanner rotating drum support bearing and the like are large, a split type holder in which a plurality of divided pieces are connected to each other and assembled into an annular shape is used as a holder for holding a ball. An example of a conventional split type cage is described in Japanese Patent Laid-Open No. 9-88968.
[0003]
FIG. 4 shows a conventional connecting structure based on the cage described in Japanese Patent Laid-Open No. 9-88968. In the conventional connecting structure, a convex first connecting portion 31 provided on one divided piece 30 and a concave second connecting portion 33 provided on the other divided piece 30 are unevenly fitted to each other. The divided pieces 30 and 30 are connected to each other.
[0004]
The first connecting portion 31 has a round tip, and the second connecting portion 33 also has a round concave portion corresponding thereto.
Conventionally, when the first connecting portion 31 and the second connecting portion 33 are connected, the opposing surfaces of the adjacent divided pieces 30 and 30 are opposed to each other in the portion indicated by the bold line in the circular partial figure 4. The size of the first and second connecting portions is set so that a slight gap is formed between the surfaces. The presence of a slight gap makes it easy to fit the first connecting portion 31 and the second connecting portion 33 together.
[0005]
[Problems to be solved by the invention]
The balls held by the cage may be delayed in advance. However, in the case of a split type retainer, if the advance and delay of the balls occur, the coupling of the split pieces may come off or get stuck.
This is because the front end of the first connecting portion is round, and thus when the force acts in the direction in which the split pieces are separated from each other, the second connecting portion 33 is easily deformed and the connecting portion pull-out force is small. If the connecting portions 31 and 33 come off or get stuck during rotation, abnormal noise is caused.
[0006]
Further, in the conventional cage, since there is a slight gap between the opposed surfaces of the adjacent divided pieces 30 and 30, this gap becomes a backlash, and when a plurality of divided pieces are connected to form an annular shape, the overall shape is illustrated. It becomes a petal shape like 5. For this reason, the cage comes into strong contact with the guide surface under high-speed rotation, which causes abnormal noise.
Moreover, when the cage has a petal shape, the cage comes into strong contact with the inner ring and the outer ring at the guide surface, and cage wear powder is generated to promote grease deterioration.
[0007]
In view of the conventional problems as described above, an object of the present invention is to increase the removal force at the connecting portion of the split pieces. Another object of the present invention is to prevent noise generation and reduce noise.
[0008]
[Means for Solving the Problems]
The present invention employs the following technical means to achieve the above object. That is, the present invention provides a strip-shaped divided piece main body for holding the rolling member, a convex first connecting portion provided at one end of the divided piece main body in the longitudinal direction of the band, and the longitudinal length of the divided piece main body. Having a cage split piece provided with a concave second connecting portion provided at the other end in the direction;
The first connecting portion is formed so as to protrude outwardly in the longitudinal direction of the band from one end in the longitudinal direction of the band of the divided piece main body, and is formed at the distal end of the proximal end portion and is wider than the proximal end portion. It is configured to include a retaining portion,
The second connection part is formed as a recess having the same shape as the first connection part so that the first connection part can be concavo-convexly fitted.
In the split type cage for a rolling bearing, wherein a plurality of the cage split pieces are connected to each other by concave and convex fitting of the first connecting portion and the second connecting portion, and are formed in an annular shape.
The base end portion of the first connecting portion has two side surfaces on both sides in the width direction,
The retaining portion of the first connecting portion is inclined from two side surfaces on both sides in the width direction and from the distal end side of each side surface of the retaining portion so that the width of the distal end portion of the retaining portion is tapered. The two shoulder surfaces extending from each other, the distal end surface between the distal ends of both shoulder surfaces and parallel to the width direction, and the respective side surfaces of the retaining portion from the distal end side of the respective side surfaces of the proximal end portion. Two rear end surfaces extending outward in the width direction toward the base end side and formed with an acute angle with respect to each side surface of the base end portion,
The second connecting portion includes two first opposing surfaces that respectively oppose the side surfaces of the base end portion, two second opposing surfaces that oppose the side surfaces of the retaining portion, and the shoulders. Two third opposing surfaces that respectively oppose the surface, a fourth opposing surface that opposes the front end surface, and two fifth opposing surfaces that respectively oppose the rear end surfaces,
When the first connecting portion and the second connecting portion are fitted, there is a gap between the front end surface and the fourth opposing surface and between each rear end surface and each fifth opposing surface. The first connecting portion and the second connecting portion are formed so that there is no gap between each shoulder surface and each third facing surface .
[0009]
The first connecting portion is formed such that the angle of the rear end face of the retaining portion with respect to the side surfaces on both sides in the width direction of the base end portion is an acute angle, and the second connecting portion has the same shape so as to be unevenly fitted with the first connecting portion. Therefore, even if the first connecting part is about to come off from the second connecting part, the catch between the rear end part of the retaining part and the second connecting part is strong, and the first connecting part tends to come off. The force acts in a direction in which the second connecting portion holds the first connecting portion stronger. For this reason, the removal force in the connection part of a division piece increases.
[0011]
By creating a gap between each shoulder surface of the retaining portion and each third facing surface of the second connecting portion, it is easy to concavo-convexly fit and facilitate the assembly of the split cage, and to come off. so that a gap is not provided between the stopper portion distal end face and between the exit each rear end face of the stopper portion and the fifth surface facing the second connecting portion between fourth opposed surface of the second connecting portion of the Therefore, it is possible to avoid the occurrence of play while facilitating assembly. Since backlash can be avoided, the cage can be prevented from becoming a petal shape as in the prior art, and the occurrence of abnormal noise can be reduced.
[0012]
Furthermore, when the first connecting portion and the second connecting portion are fitted, the side surfaces of the base end portion and the first opposing surfaces, and the side surfaces of the retaining portion, It is preferable that the first connection portion and the second connection portion are formed so that there is no gap between each of the second facing surfaces .
[0013]
As a result, the occurrence of play in the width direction of the divided pieces can be prevented.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a cage split piece 1 constituting a split type cage for a rolling bearing according to the present invention.
The cage divided piece 1 is a piece obtained by dividing an annular cage into 12 pieces, and is entirely made of plastic. The cage split piece 1 is provided at a strip-shaped split piece main body 2, a first connecting portion 3 provided at one end in the strip longitudinal direction of the split piece main body 2, and a strip longitudinal end of the split piece main body 2. And a second connecting portion 4.
[0015]
The divided piece main body 2 includes a plurality of pocket portions 6 at predetermined intervals in the longitudinal direction. The pocket portion 6 is formed as a hole penetrating in the thickness direction of the divided piece body 2 in order to hold a rolling member such as a ball or a cylinder.
The first connecting portion 3 is a convex portion that is formed so as to extend outward in the longitudinal direction from one end 2 a in the longitudinal direction of the strip piece 2, and the second connecting portion 4 is a strip of the split piece body 2. It is the recessed part withdrawn in the longitudinal direction inward from the longitudinal direction other end 2b.
[0016]
The 1st connection part 3 and the 2nd connection part 4 are formed so that uneven | corrugated fitting is possible, and as shown in FIG.2 and FIG.3, the 1st connection part 3 of one division | segmentation piece 1a and another division | segmentation piece The two divided pieces 1a and 1b can be connected by fitting the second connecting piece 4 of 1b, and the annular retainer is assembled by connecting 12 divided pieces in the same manner.
[0017]
The first connecting portion 3 includes a base end portion 8 that protrudes outward from the band longitudinal direction end 2 a of the split piece main body 2, and a retaining portion 9 that is formed on the front end side of the base end portion 8. I have.
The retaining portion 9 is wider than the base end portion 8 and has a substantially arrowhead shape as a whole. Specifically, it has side surfaces 9a and 9a which are parallel to each other on both sides in the width direction, and shoulder surfaces 9b and 9b which are inclined from the front end side of these side surfaces 9a and 9a so as to be tapered and tapered. Yes. Further, a distal end surface 9c parallel to the width direction is formed on the distal end side of the retaining portion 9, and a rear end surface extending on both sides in the width direction from the distal end side of the base end portion 8 to the side surfaces 9a, 9a is formed on the rear end side. (Rear end portions) 9d and 9d are formed.
[0018]
The second connecting portion 4 is formed as a concave portion having a shape corresponding to the shape of the first connecting portion 3 so that the first connecting portion 3 can be fitted. The second connecting portion 4 is formed at the other end 2b in the longitudinal direction of the divided piece main body 2, so that the other end 2b in the longitudinal direction of the divided piece main body 2 is bifurcated.
[0019]
Specifically, the second connection portion 4 is a first portion that faces the side surfaces (width direction end portions) 8a, 8a on both sides in the width direction of the base end portion of the first connection portion 3 when the first connection portion 3 is fitted. Opposing surfaces 11a, 11a, second opposing surfaces 12a, 12a facing the side surfaces 9a, 9a of the retaining portion 9, and third opposing surfaces 12b, 12b facing the shoulder surfaces 9b, 9b of the retaining portion 9, It has the 4th opposing surface 12c which opposes the front end surface 9c of the retaining part 9, and the 5th opposing surfaces 12d and 12d which oppose the rear end surfaces 9d and 9d of the retaining part 9.
[0020]
As shown in FIG. 3, the rear end surfaces 9d and 9d of the retaining portion 9 extend in the width direction so as to increase in width from the distal end of the base end portion 8, but these rear end surfaces 9d and 9d are formed in the width direction w. Instead of extending in parallel, it extends in the width direction while being inclined at an angle β with respect to the width direction w so as to be directed toward the divided piece body 2. Therefore, the angle α of the retaining portion rear end surfaces (rear end portions) 9d and 9d with respect to the base end side surfaces (width direction end portions) 8a and 8a is an acute angle. Moreover, the 5th opposing surfaces 12d and 12d of the 2nd connection part 4 which oppose the rear end surfaces 9d and 9d are also inclined similarly. For this reason, the other end side 2b in the longitudinal direction of the split piece main body 2 has a hook-shaped engagement structure. The angle α is 70 ° and the angle β is 20 °.
[0021]
When a force is applied to disengage the coupling portions 3 and 4, the force acts in a direction in which the first facing surfaces 11 a and 11 a of the second coupling portion 4 are brought close to each other as indicated by an arrow x, The first opposing surfaces 11a and 11a of the two connecting portions 4 function as gripping portions that grip the first connecting portions. Therefore, even if the first connecting portion 3 is about to come off, the coming-off force in the split piece connecting structure is improved.
[0022]
When the removal force was measured at the conventional round connecting portion shown in FIG. 4, it was about 115 N, but at the arrowhead type connecting portions 3 and 4 of this embodiment, the removal force was about 680 N, which is compared with the conventional one. The pulling power improved about 6 times.
[0023]
When the first connecting portion 3 and the second connecting portion 4 are fitted, a slight gap is formed between the shoulder surface 9b of the first connecting portion 3 and the third facing surface 12b of the second connecting portion 4. It is formed. In FIG. 3, the gap is indicated by a bold line. This gap is set to about 0.2 mm, and it is easy to fit the first connecting part 3 and the second connecting part 4 by this gap.
[0024]
On the other hand, of the opposing surfaces of the two divided pieces 1a and 1b, the opposing surfaces 2a, 8a, 9a, 9c and 9d other than the shoulder surface 9b and the third opposing surface 12b; 2b, 11a, 12a, 12c and 12d The shape of the 1st connection part 3 and the 2nd connection part is set so that a clearance gap may not be produced when the 1st connection part 3 and the 2nd connection part 4 are fitted. For example, the width of the base end portion 8 and the distance between the first opposing surfaces 11a and 11a are set to be the same.
[0025]
In order to prevent backlash between the split pieces 1a and 1b in the band longitudinal direction of the circumferential split piece of the annular cage, (1) the longitudinal one end face 2a and the other longitudinal end face of the split piece main body 2 3b, (2) between the front end surface 9c of the retaining portion 9 and the fourth opposing surface 12c, and (3) between the rear end surface 9d and the fifth opposing surface 12d of the retaining portion 9. Of these, it is sufficient that there are no gaps between the opposing surfaces in at least two places, and in this embodiment, there are no gaps between all three opposing faces.
[0026]
Further, in order to prevent backlash between the split pieces 1a and 1b in the band width direction of the split piece in the width direction of the annular cage, (4) first side face with the side faces 8a and 8a of the base end 8 It is sufficient that there is no gap between the opposing surfaces of at least one of the two surfaces between the surface 11a and (5) the side surfaces 9a, 9a of the retaining portion 9 and the second opposing surface 12a. In the configuration, there is no gap between all two opposing surfaces.
[0027]
In particular, in the present embodiment, (1) between the one end surface 2a in the longitudinal direction of the split piece body 2 and the other end surface 2b in the longitudinal direction, and (3) the rear end surface 9d of the retaining portion 9 Gaps are prevented by eliminating gaps at three locations between the fifth facing surface 12d and (4) between the side surfaces 8a, 8a of the base end portion 8 and the first facing surface 11a.
[0028]
When the test was performed by rotating the cage assembled with the above-described divided pieces 1 at 120 r / min and applying a specified load, no abnormal noise was observed. Therefore, it was confirmed that the connection structure of the 1st connection part 3 and the 2nd connection part 4 is very effective in a holder | retainer.
[0029]
The present invention is not limited to the above embodiment. For example, the shape of the retaining portion 9 is not limited to the arrowhead shape, and the shape from the side surface 9a to the tip surface 9c can be a curved surface or an arbitrary polygonal surface. Further, the position at which the gap between the opposing surfaces is provided can be changed as appropriate according to the shape change of the retaining portion.
[0030]
【The invention's effect】
According to the present invention, the first connecting portion is formed such that the angle of the rear end portion of the retaining portion with respect to the width direction end portion of the base end portion is an acute angle, and the second connecting portion is uneven with the first connecting portion. Since it is a recess having the same shape so as to be fitted, even if the first connecting part tries to come off from the second connecting part, the catch between the rear end part of the retaining part and the second connecting part is strong, and the first connecting part The force that tends to come off acts in a direction in which the second connecting portion holds the first connecting portion stronger. For this reason, the removal force in the connection part of a division piece increases.
[0031]
In addition, by forming a gap at least partially between the opposing surfaces of the adjacent divided pieces, the fitting is facilitated and the assembly of the split cage is facilitated. Since there is no gap in the portion that causes the occurrence of looseness, generation of backlash can be avoided while facilitating assembly, and generation of abnormal noise can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view of divided pieces constituting a divided cage.
FIG. 2 is a partial plan view showing a first connecting part and a second connecting part before fitting.
FIG. 3 is a partial plan view showing a fitted first connecting portion and second connecting portion.
FIG. 4 is a partial plan view showing a conventional connection structure.
FIG. 5 is a conceptual diagram showing a conventional cage having a petal shape.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cage division | segmentation piece 2 Division | segmentation piece main body 3 1st connection part 4 2nd connection part 8 Base end part 9 Removal prevention part 9b Shoulder surface

Claims (2)

転動部材を保持するための帯状の分割片本体と、前記分割片本体の帯長手方向一端に設けられた凸状の第１連結部と、前記分割片本体の帯長手方向他端に設けられた凹状の第２連結部とを備えた保持器分割片を有し、
前記第１連結部は、前記分割片本体の帯長手方向一端から帯長手方向外方へ突出形成された基端部と、この基端部の先端に形成され且つ前記基端部より幅広である抜け止め部とを備えて構成され、
前記第２連結部は、前記第１連結部が凹凸嵌合できるように、前記第１連結部と同形の凹部として形成され、
複数の前記保持器分割片が前記第１連結部と前記第２連結部の凹凸嵌合によって連結されて環状に形成される転がり軸受用分割型保持器において、
前記第１連結部の前記基端部が、幅方向両側に２つの側面を有しており、
前記第１連結部の前記抜け止め部が、幅方向両側の２つの側面と、前記抜け止め部の先端部の幅が先細りとなるように前記抜け止め部の前記各側面の先端側から傾斜して延びる２つの肩面と、この両肩面の先端側の間にあり且つ幅方向と平行な先端面と、前記基端部の前記各側面の先端側から前記抜け止め部の前記各側面の基端側に向かって幅方向外側に延び且つ前記基端部の前記各側面に対する角度が鋭角に形成された２つの後端面と、を有しており、
前記第２連結部が、前記基端部の前記各側面にそれぞれ対向する２つの第１対向面と、前記抜け止め部の前記各側面にそれぞれ対向する２つの第２対向面と、前記各肩面にそれぞれ対向する２つの第３対向面と、前記先端面に対向する第４対向面と、前記各後端面にそれぞれ対向する２つの第５対向面と、を有しており、
前記第１連結部と前記第２連結部とを嵌合させたときに、前記先端面と前記第４対向面との間及び前記各後端面と前記各第５対向面との間に隙間がなく且つ前記各肩面と前記各第３対向面との間に隙間を有するように、前記第１連結部と前記第２連結部とが形成されていることを特徴とする転がり軸受用分割保持器。A strip-shaped split piece main body for holding a rolling member, a convex first connecting portion provided at one end in the strip longitudinal direction of the split piece main body, and a strip longitudinal end of the split strip main body. A retainer divided piece having a concave second connecting portion;
The first connecting portion is formed so as to protrude outwardly in the longitudinal direction of the band from one end in the longitudinal direction of the band of the divided piece main body, and is formed at the distal end of the proximal end portion and is wider than the proximal end portion. It is configured to include a retaining portion,
The second connection part is formed as a recess having the same shape as the first connection part so that the first connection part can be concavo-convexly fitted.
In the split type cage for a rolling bearing, wherein a plurality of the cage split pieces are connected to each other by concave and convex fitting of the first connecting portion and the second connecting portion, and are formed in an annular shape.
The base end portion of the first connecting portion has two side surfaces on both sides in the width direction,
The retaining portion of the first connecting portion is inclined from two side surfaces on both sides in the width direction and from the distal end side of each side surface of the retaining portion so that the width of the distal end portion of the retaining portion is tapered. The two shoulder surfaces extending from each other, the distal end surface between the distal ends of both shoulder surfaces and parallel to the width direction, and the respective side surfaces of the retaining portion from the distal end side of the respective side surfaces of the proximal end portion. Two rear end surfaces extending outward in the width direction toward the base end side and formed with an acute angle with respect to each side surface of the base end portion,
The second connecting portion includes two first opposing surfaces that respectively oppose the side surfaces of the base end portion, two second opposing surfaces that oppose the side surfaces of the retaining portion, and the shoulders. Two third opposing surfaces that respectively oppose the surface, a fourth opposing surface that opposes the front end surface, and two fifth opposing surfaces that respectively oppose the rear end surfaces,
When the first connecting portion and the second connecting portion are fitted, there is a gap between the front end surface and the fourth opposing surface and between each rear end surface and each fifth opposing surface. The first and second connecting portions are formed so that there is no gap between each shoulder surface and each third facing surface, and the rolling bearing is divided and held. vessel. 前記第１連結部と前記第２連結部とを嵌合させたときに、前記基端部の前記各側面と前記各第１対向面との間及び前記抜け止め部の前記各側面と前記各第２対向面との間に隙間がなくなるように、前記第１連結部及び第２連結部が形成されていることを特徴とする請求項１記載の転がり軸受用分割型保持器。 When the first connecting portion and the second connecting portion are fitted, the side surfaces of the base end portion and the first opposing surfaces, and the side surfaces of the retaining portion and the respective 2. The split type cage for a rolling bearing according to claim 1, wherein the first connecting portion and the second connecting portion are formed so that there is no gap between the second facing surface and the second opposing surface .
JP2001319703A 2001-10-17 2001-10-17 Split cage for rolling bearings Expired - Lifetime JP3933435B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001319703A JP3933435B2 (en) 2001-10-17 2001-10-17 Split cage for rolling bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001319703A JP3933435B2 (en) 2001-10-17 2001-10-17 Split cage for rolling bearings

Publications (2)

Publication Number Publication Date
JP2003120680A JP2003120680A (en) 2003-04-23
JP3933435B2 true JP3933435B2 (en) 2007-06-20

Family

ID=19137216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001319703A Expired - Lifetime JP3933435B2 (en) 2001-10-17 2001-10-17 Split cage for rolling bearings

Country Status (1)

Country Link
JP (1) JP3933435B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4453465B2 (en) 2004-07-08 2010-04-21 株式会社ジェイテクト Ball bearing cage and ball bearing
DE102005047620B9 (en) * 2005-10-05 2007-10-31 Hiwin Technologies Corp. Retaining module for rolling balls
JP2009216962A (en) * 2008-03-11 2009-09-24 Sigma Corp Lens barrel
JP2013238295A (en) 2012-05-16 2013-11-28 Jtekt Corp Rolling bearing
DE102013214245A1 (en) * 2013-07-22 2015-01-22 Schaeffler Technologies Gmbh & Co. Kg Divided rolling element cage

Also Published As

Publication number Publication date
JP2003120680A (en) 2003-04-23

Similar Documents

Publication Publication Date Title
US20080037922A1 (en) Cage for Roller Bearing
CN107575468B (en) Rolling bearing
JP3933435B2 (en) Split cage for rolling bearings
JPH0333519A (en) One way clutch
JP4453465B2 (en) Ball bearing cage and ball bearing
JP2008215390A (en) Cage for cylindrical roller bearing
WO2014058038A1 (en) Bearing device
KR100634230B1 (en) One-way clutch integrated with a rolling bearing
JP5286959B2 (en) Cylindrical roller bearing
JP2007120591A (en) Cam follower and roller follower
JP2006242199A (en) Thrust roller bearing
JPWO2005093273A1 (en) Spherical roller bearing
JP2013213555A (en) Synthetic resin retainer and ball bearing
JP2007303657A (en) Cross roller bearing
JP3749020B2 (en) Assembly structure of automatic transmission shaft and sleeve
JP2001304268A (en) Corrugated holder for rolling bearing
JP2003049844A (en) Thrust roller bearing
CN111278662A (en) Wheel bearing device and method for manufacturing same
JP3465240B2 (en) Thrust bearing mounting structure
JPH0449845Y2 (en)
JP2003322156A (en) Roller bearing
JP2001323933A (en) Double row roller bearing
JP3849816B2 (en) Angular contact ball bearings
JP2002310175A (en) Double row rolling bearing
JP2019060428A (en) Rolling bearing device and seal member

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060908

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20061003

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061201

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070220

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070313

R150 Certificate of patent or registration of utility model

Ref document number: 3933435

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110330

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120330

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120330

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130330

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140330

Year of fee payment: 7