JP2002227873A - Resin boots for constant-velocity universal joint - Google Patents
Resin boots for constant-velocity universal jointInfo
- Publication number
- JP2002227873A JP2002227873A JP2001023298A JP2001023298A JP2002227873A JP 2002227873 A JP2002227873 A JP 2002227873A JP 2001023298 A JP2001023298 A JP 2001023298A JP 2001023298 A JP2001023298 A JP 2001023298A JP 2002227873 A JP2002227873 A JP 2002227873A
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- band
- mounting portion
- diameter mounting
- mounting groove
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、等速ジョイント用
の樹脂製ブーツに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin boot for a constant velocity joint.
【０００２】[0002]
【従来の技術】一般に等速ジョイント用の樹脂製ブーツ
は、蛇腹部の一端に等速ジョイントのジョイント軸に装
着される小径取付部を設けるとともに、蛇腹部の他端に
等速ジョイントの外輪に装着される大径取付部を設けた
構成になっており、小径取付部及び大径取付部のそれぞ
れには環状のバンド装着溝が形成されている。図６に示
したように、等速ジョイントの外輪５に装着した大径取
付部５１は、バンド装着溝５２に装着したバンド６によ
って外輪５に対して締め付け固定されるようになってい
る。2. Description of the Related Art In general, a resin boot for a constant velocity joint is provided with a small-diameter mounting portion mounted on a joint shaft of the constant velocity joint at one end of a bellows portion, and at the other end of the bellows portion with an outer ring of the constant velocity joint. A large diameter mounting portion to be mounted is provided, and an annular band mounting groove is formed in each of the small diameter mounting portion and the large diameter mounting portion. As shown in FIG. 6, the large-diameter mounting portion 51 mounted on the outer race 5 of the constant velocity joint is fastened and fixed to the outer race 5 by the band 6 mounted on the band mounting groove 52.
【０００３】[0003]
【発明が解決しようとする課題】従来、図６のようにバ
ンド６で大径取付部５１を外輪５に対して締め付け固定
するときに、バンドが矢印Ａで示したように大径取付部
５１から抜け出てしまう不都合が生じることがあった。
このような不都合が生じる原因は、次のように考えられ
る。すなわち、大径取付部５１の内側寄り（即ち、蛇腹
部１２寄り）の位置に作用するバンド６の締め付け圧Ｐ
１が大径取付部５１の外側寄りの位置に作用するバンド
６の締め付け圧Ｐ２より所定値以上大きくなると、バン
ド６を締め付けていく間にバンド６が矢印Ｂのように傾
き、その結果、矢印Ａのように抜け出してしまうものと
考えられる。本発明は、このような従来技術の問題点を
解決する、等速ジョイント用の樹脂製ブーツを提供する
ことを目的とするものである。Conventionally, when the large-diameter mounting portion 51 is fastened and fixed to the outer ring 5 with the band 6 as shown in FIG. There was a case where the inconvenience of getting out of the system occurred.
The cause of such inconvenience is considered as follows. That is, the tightening pressure P of the band 6 acting on the position closer to the inside of the large-diameter mounting portion 51 (that is, closer to the bellows portion 12).
When 1 is greater than the tightening pressure P2 of the band 6 acting on the position closer to the outside of the large-diameter mounting portion 51 by a predetermined value or more, the band 6 tilts as shown by the arrow B while the band 6 is being tightened. It is thought that it escapes like A. SUMMARY OF THE INVENTION An object of the present invention is to provide a resin boot for a constant velocity joint that solves such problems of the conventional technology.
【０００４】[0004]
【課題を解決するための手段】上記した問題を解決する
ために、本発明は、大径取付部に形成された環状のバン
ド装着溝の底面が、バンド装着溝の軸線方向中央部より
外側にあってバンドに接触するようになっている第１部
分と、前記軸線方向中央部より内側にあってバンドに接
触するようになっている第２部分とを有し、大径取付部
を等速ジョイントの外輪に装着したときに前記第１部分
の最大径部分が前記第２部分の径より大きくなるよう構
成されていることを特徴とする等速ジョイント用の樹脂
製ブーツを提供する。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an annular band mounting groove formed in a large-diameter mounting portion, wherein a bottom surface of the annular band mounting groove is located outside an axially central portion of the band mounting groove. A first portion that is in contact with the band, and a second portion that is inside the central portion in the axial direction and is in contact with the band. A resin boot for a constant velocity joint, wherein a maximum diameter portion of the first portion is configured to be larger than a diameter of the second portion when attached to an outer ring of the joint.
【０００５】[0005]
【発明の作用および効果】本発明の樹脂製ブーツにおい
ては、等速ジョイントの外輪に装着した大径取付部をバ
ンド装着溝に装着したバンドで締め付けるときに、最大
締め付け圧が前記第１部分のうちの所定部分である最大
径部分のところで得られ、その最大締め付け圧が前記第
２部分に作用する締め付け圧よりも大きくなる。したが
って、図６に矢印Ｂで示したようにバンドが傾くことが
なく、同図に矢印Ａで示したようにバンドが抜け出るこ
とがない。In the resin boot of the present invention, when the large-diameter mounting portion mounted on the outer ring of the constant velocity joint is tightened with the band mounted on the band mounting groove, the maximum tightening pressure is equal to the first portion. The maximum tightening pressure is obtained at a maximum diameter portion which is a predetermined portion, and is greater than the tightening pressure acting on the second portion. Therefore, the band does not tilt as shown by the arrow B in FIG. 6, and the band does not come off as shown by the arrow A in FIG.
【０００６】[0006]
【発明の実施の形態】図１は、本発明の第１実施形態の
等速ジョイント用樹脂製ブーツを示している。このブー
ツは、蛇腹部１２の一端に等速ジョイントのジョイント
軸（図示されていない）に装着される小径取付部７を設
けるとともに、蛇腹部１２の他端に等速ジョイントの外
輪に装着される大径取付部１を設けた構成になってい
る。シール性を確保するために、小径取付部７の内径は
相手部材であるジョイント軸の外径より小さく、また、
大径取付部１の内径は相手部材である外輪の外径より小
さく設定されている。小径取付部７及び大径取付部１の
それぞれには環状のバンド装着溝８，２が形成されてお
り、それら小径および大径取付部７，１の外端には径方
向外方へ向けてバンドストッパー９，３が突設されてい
る。また、小径および大径取付部７，１の軸線方向のほ
ぼ中央位置に径方向内方へ突出する突起１０，４が形成
されている。これらの突起１０，４は、小径および大径
取付部７，１をそれぞれ相手部材であるジョイント軸お
よび外輪に装着したときに、相手部材との線接触による
高接触圧部分を作ってシール性を向上させるとともに、
小径および大径取付部７，１を相手部材に対して位置決
めする機能を果たすものである。FIG. 1 shows a resin boot for a constant velocity joint according to a first embodiment of the present invention. The boot has a small-diameter mounting portion 7 attached to a joint shaft (not shown) of a constant velocity joint at one end of a bellows portion 12 and is attached to an outer ring of the constant velocity joint at the other end of the bellows portion 12. The configuration is such that a large-diameter mounting portion 1 is provided. In order to ensure the sealing performance, the inner diameter of the small-diameter mounting portion 7 is smaller than the outer diameter of the joint shaft as a mating member.
The inner diameter of the large-diameter mounting portion 1 is set smaller than the outer diameter of the outer ring that is the mating member. Annular band mounting grooves 8 and 2 are formed in each of the small-diameter mounting portion 7 and the large-diameter mounting portion 1, and the outer ends of the small-diameter and large-diameter mounting portions 7 and 1 are directed radially outward. Band stoppers 9 and 3 are protrudingly provided. Further, projections 10 and 4 projecting radially inward are formed substantially at the center of the small-diameter and large-diameter mounting portions 7 and 1 in the axial direction. When the small diameter and large diameter mounting portions 7 and 1 are respectively mounted on the joint shaft and the outer ring as mating members, these projections 10 and 4 form a high contact pressure portion due to linear contact with the mating member to improve the sealing property. While improving
It functions to position the small-diameter and large-diameter mounting portions 7, 1 with respect to the mating member.
【０００７】図２（ａ）に示したように、大径取付部１
のバンド装着溝２の底面は、バンド装着溝２の軸線方向
中央部Ｃ付近に形成された環状の中央溝部２ｃと、中央
溝部２ｃの外側位置にある第１部分２ａと、中央溝部２
ｃの内側位置（即ち蛇腹部１２側の位置）にある第２部
分２ｂとを有する。上記第１部分２ａは、バンド装着溝
２の軸線方向中央部Ｃより外側にあってバンドに接触す
るようになっている部分であり、また、上記第２部分２
ｂは、軸線方向中央部Ｃより内側にあってバンドに接触
するようになっている部分である。[0007] As shown in FIG.
The bottom surface of the band mounting groove 2 has an annular central groove 2c formed near the axial center portion C of the band mounting groove 2, a first portion 2a located outside the central groove 2c, and a central groove 2
c at a position inside (i.e., on the side of the bellows portion 12). The first portion 2a is located outside the central portion C in the axial direction of the band mounting groove 2 and is in contact with the band.
b is a portion which is located inside the central portion C in the axial direction and comes into contact with the band.
【０００８】上記第１部分２ａの、突起４よりも外側位
置における大径取付部１の肉厚Ｔ１は、上記第２部分２
ｂの、突起４よりも内側位置における大径取付部１の肉
厚Ｔ２より所定の小さな寸法ｔだけ大きくされている。
したがって、大径取付部１を図２（ｂ）のように等速ジ
ョイントの外輪５に装着したときには、第１部分２ａの
最大径部分２ａ'およびそれより外側に位置する第１部
分２ａの径は前記第２部分２ｂの径より大きくなる。図
２（ｂ）のように外輪５に装着された大径取付部１のバ
ンド装着溝２に、図２（ｃ）のようにバンド６を装着し
て締め付けると、第１部分２ａの最大径部分２ａ'およ
びそれより外側の部分に作用する締め付け圧Ｐ２は、第
２部分２ｂに作用する締め付け圧Ｐ１より大きくなる。
したがって、バンド６は矢印Ｄで示したように傾斜しよ
うとするため、バンド６が図６に矢印Ａで示したように
抜け出ることはない。The thickness T1 of the large-diameter mounting portion 1 at a position outside the projection 4 on the first portion 2a is equal to the thickness T1 of the second portion 2a.
b is larger than the thickness T2 of the large diameter mounting portion 1 at a position inside the projection 4 by a predetermined small dimension t.
Therefore, when the large-diameter mounting portion 1 is mounted on the outer race 5 of the constant velocity joint as shown in FIG. 2B, the diameter of the maximum diameter portion 2a 'of the first portion 2a and the diameter of the first portion 2a located outside the maximum diameter portion 2a'. Is larger than the diameter of the second portion 2b. When the band 6 is attached and tightened as shown in FIG. 2C in the band attachment groove 2 of the large-diameter attachment portion 1 attached to the outer ring 5 as shown in FIG. 2B, the maximum diameter of the first portion 2a is obtained. The clamping pressure P2 acting on the part 2a 'and the part outside thereof is greater than the clamping pressure P1 acting on the second part 2b.
Therefore, since the band 6 tends to tilt as shown by the arrow D, the band 6 does not come off as shown by the arrow A in FIG.
【０００９】上記したように、第１実施形態は、大径取
付部１を外輪５に装着したときに、第１部分２ａの最大
径部分２ａ'およびそれより外側の部分のすべての径が
第２部分２ｂの径より大きくなる。しかしながら、本発
明においては、大径取付部１をバンド６で締め付けたと
きに図２（ｃ）に矢印Ｄで示したようにバンド６を傾斜
させようとする力が作用すればよいのであるから、最大
径部分２ａ'より外側の部分の径がすべて第２部分２ｂ
の径より大きくなることは、必ずしも必要ではない。As described above, in the first embodiment, when the large-diameter mounting portion 1 is mounted on the outer race 5, the maximum diameter portion 2a 'of the first portion 2a and all the diameters of the portions outside the maximum diameter portion 2a' are the second diameter. It becomes larger than the diameter of the two portions 2b. However, in the present invention, when the large-diameter mounting portion 1 is fastened with the band 6, a force for inclining the band 6 only has to act as shown by an arrow D in FIG. The diameter of the portion outside the maximum diameter portion 2a 'is all the second portion 2b.
It is not always necessary that the diameter be larger than the diameter.
【００１０】図３は、本発明の第２実施形態の樹脂製ブ
ーツにおける大径取付部１１を示している。この大径取
付部１１のバンド装着溝１２の底面は、第１実施形態と
同様の中央溝部１２ｃおよび第２部分１２ｂとを有す
る。しかしながら、バンド装着溝１２の底面の第１部分
１２ａは、軸線方向外側、即ち図３の右側へ向けて徐々
に拡径するように傾斜している。また、第１部分１２ａ
の内側に位置する大径取付部１１の内周面１２ｄは、突
起１４の外端の位置から大径取付部１１の外端の位置ま
で同一径の周面になっている。したがって、大径取付部
１１の肉厚は、突起１４の外端の位置から第１部分１２
ａの外端位置まで徐々に増加している。この第２実施形
態においても、既述の第１実施形態と同様に、大径取付
部１１を外輪に装着したときに、第１部分１２ａの最大
径部分は第２部分１２ｂの径より大きくなる。FIG. 3 shows a large-diameter mounting portion 11 in a resin boot according to a second embodiment of the present invention. The bottom surface of the band mounting groove 12 of the large-diameter mounting portion 11 has a central groove 12c and a second portion 12b similar to those of the first embodiment. However, the first portion 12a on the bottom surface of the band mounting groove 12 is inclined such that the diameter gradually increases toward the outside in the axial direction, that is, toward the right side in FIG. Also, the first portion 12a
The inner peripheral surface 12 d of the large-diameter mounting portion 11 located inside the inner surface of the large-diameter mounting portion 11 has the same diameter from the position of the outer end of the projection 14 to the position of the outer end of the large-diameter mounting portion 11. Accordingly, the thickness of the large-diameter mounting portion 11 is set such that the first portion 12
It gradually increases to the outer end position of a. Also in the second embodiment, when the large-diameter mounting portion 11 is mounted on the outer race, the maximum diameter portion of the first portion 12a becomes larger than the diameter of the second portion 12b, as in the first embodiment described above. .
【００１１】図４は、本発明の第３実施形態の樹脂製ブ
ーツにおける大径取付部２１を示している。この第３実
施形態においては、バンド装着溝２２の底面の第１部分
２２ａが、その軸線方向内端位置から軸線方向外端位置
まで同一径になっている。また、第１部分２２ａの内側
に位置する大径取付部２１の内周面２２ｄは、突起２４
の外端（図４の右端）の位置から大径取付部２１の外端
の位置まで徐々に縮径されている。したがって、大径取
付部２１の肉厚は、突起２４の外端の位置から第１部分
２２ａの外端位置まで徐々に増加している。第３実施形
態の上記した点以外の構成は既述の第２実施形態のそれ
と同様であり、大径取付部２１を外輪に装着したときに
は、第１部分２２ａの最大径部分は第２部分２２ｂの径
より大きくなる。FIG. 4 shows a large-diameter mounting portion 21 in a resin boot according to a third embodiment of the present invention. In the third embodiment, the first portion 22a on the bottom surface of the band mounting groove 22 has the same diameter from its axial inner end position to its axial outer end position. The inner peripheral surface 22d of the large-diameter mounting portion 21 located inside the first portion 22a is
The diameter is gradually reduced from the position of the outer end (right end in FIG. 4) to the position of the outer end of the large-diameter mounting portion 21. Therefore, the thickness of the large-diameter mounting portion 21 gradually increases from the position of the outer end of the projection 24 to the position of the outer end of the first portion 22a. The configuration of the third embodiment other than the above-described point is the same as that of the above-described second embodiment. When the large-diameter mounting portion 21 is mounted on the outer race, the maximum diameter portion of the first portion 22a becomes the second portion 22b. Larger than the diameter of
【００１２】図５は、本発明の第４実施形態の樹脂製ブ
ーツにおける大径取付部３１を示している。この第４実
施形態においては、第１部分３２ａが、その軸線方向内
端位置から軸線方向外端位置まで同一径になっている。
また、第１部分３２ａの内側に位置する大径取付部３１
の内周面３２ｄは、突起３４の外端（図５の右端）の位
置から大径取付部３１の外端の位置まで同一径の部分３
２ｄ‘と、半径方向内方へ突出する突起状部分３２ｄ
“とを有する。突起状部分３２ｄ“は、突起３４の外端
の位置から大径取付部３１の外端の位置まで徐々に縮径
されており、内周面３２ｄの円周方向の複数個所に設け
られていている。第４実施形態の上記した点以外の構成
は既述の第２および第３実施形態のそれと同様であり、
大径取付部３１を外輪に装着したときには、第１部分３
２ａの最大径部分は第２部分３２ｂの径より大きくな
る。FIG. 5 shows a large-diameter mounting portion 31 in a resin boot according to a fourth embodiment of the present invention. In the fourth embodiment, the first portion 32a has the same diameter from its axial inner end position to its axial outer end position.
Also, the large-diameter mounting portion 31 located inside the first portion 32a.
The inner peripheral surface 32d has a portion 3 having the same diameter from the position of the outer end of the protrusion 34 (the right end in FIG.
2d 'and a protruding portion 32d protruding radially inward
The projecting portion 32d "is gradually reduced in diameter from the position of the outer end of the protrusion 34 to the position of the outer end of the large-diameter mounting portion 31, and has a plurality of circumferential portions on the inner peripheral surface 32d. It is provided in. The configuration of the fourth embodiment other than the points described above is the same as that of the above-described second and third embodiments,
When the large-diameter mounting portion 31 is mounted on the outer ring, the first portion 3
The maximum diameter portion of 2a is larger than the diameter of the second portion 32b.
【図１】本発明の第１実施形態の等速ジョイント用樹脂
製ブーツを示す軸線方向断面図である。FIG. 1 is an axial sectional view showing a resin boot for a constant velocity joint according to a first embodiment of the present invention.
【図２】上記第１実施形態の樹脂製ブーツの大径取付部
を拡大して示す図であり、（ａ）は大径取付部を等速ジ
ョイントの外輪に装着していない状態を示す図、（ｂ）
は大径取付部を外輪に装着した状態を示す図、（ｃ）は
バンドを締め付けた状態を示す図である。FIG. 2 is an enlarged view showing a large-diameter mounting portion of the resin boot according to the first embodiment, and FIG. 2A is a diagram showing a state in which the large-diameter mounting portion is not mounted on an outer ring of a constant velocity joint. , (B)
FIG. 4 is a view showing a state in which the large-diameter mounting portion is mounted on the outer ring, and FIG.
【図３】本発明の第２実施形態の樹脂製ブーツの大径取
付部を示す、図２（ａ）と同様の図である。FIG. 3 is a view similar to FIG. 2A, showing a large-diameter mounting portion of a resin boot according to a second embodiment of the present invention.
【図４】本発明の第３実施形態の樹脂製ブーツの大径取
付部を示す、図２（ａ）と同様の図である。FIG. 4 is a view similar to FIG. 2A, showing a large-diameter mounting portion of a resin boot according to a third embodiment of the present invention.
【図５】本発明の第３実施形態の樹脂製ブーツの大径取
付部を示す、図２（ａ）と同様の図である。FIG. 5 is a view similar to FIG. 2A, showing a large-diameter mounting portion of a resin boot according to a third embodiment of the present invention.
【図６】従来の樹脂製ブーツの大径取付部を外輪に装着
してバンドで締め付けた状態を示す図である。FIG. 6 is a view showing a state in which a large-diameter mounting portion of a conventional resin boot is mounted on an outer race and fastened with a band.
１，１１，２１，３１ 大径取付部 ２，１２，２２，３２ バンド装着溝 ２ａ，１２ａ，２２ａ，３２ａ 第１部分 ２ｂ，１２ｂ，２２ｂ，３２ｂ 第２部分 ５ 外輪 ６ バンド 1, 11, 21, 31 Large-diameter mounting portion 2, 12, 22, 32 Band mounting groove 2a, 12a, 22a, 32a First portion 2b, 12b, 22b, 32b Second portion 5 Outer ring 6 Band
Claims (2)
着溝の底面が、バンド装着溝の軸線方向中央部より外側
にあってバンドに接触するようになっている第１部分
と、前記軸線方向中央部より内側にあってバンドに接触
するようになっている第２部分とを有し、大径取付部を
等速ジョイントの外輪に装着したときに前記第１部分の
最大径部分が前記第２部分の径より大きくなるよう構成
されていることを特徴とする等速ジョイント用の樹脂製
ブーツ。A first portion in which a bottom surface of an annular band mounting groove formed in a large-diameter mounting portion is located outside a central portion of the band mounting groove in an axial direction and is in contact with the band; A second portion which is located inside the central portion in the axial direction and comes into contact with the band, and when the large diameter mounting portion is mounted on the outer ring of the constant velocity joint, the maximum diameter portion of the first portion is A resin boot for a constant velocity joint, which is configured to be larger than the diameter of the second portion.
前記最大径部分における大径取付部の肉厚が、前記第２
部分における大径取付部の肉厚より大きいことを特徴と
する樹脂製ブーツ。2. The resin boot according to claim 1,
The thickness of the large diameter mounting portion at the maximum diameter portion is the second diameter.
A resin boot characterized in that it is larger than the thickness of the large-diameter mounting portion in the portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001023298A JP4617005B2 (en) | 2001-01-31 | 2001-01-31 | Resin boots for constant velocity joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001023298A JP4617005B2 (en) | 2001-01-31 | 2001-01-31 | Resin boots for constant velocity joints |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002227873A true JP2002227873A (en) | 2002-08-14 |
| JP4617005B2 JP4617005B2 (en) | 2011-01-19 |
Family
ID=18888598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001023298A Expired - Fee Related JP4617005B2 (en) | 2001-01-31 | 2001-01-31 | Resin boots for constant velocity joints |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4617005B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0673535U (en) * | 1993-03-31 | 1994-10-18 | キーパー株式会社 | boots |
| JPH11132327A (en) * | 1997-10-30 | 1999-05-21 | Toyo Tire & Rubber Co Ltd | Bellows |
-
2001
- 2001-01-31 JP JP2001023298A patent/JP4617005B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0673535U (en) * | 1993-03-31 | 1994-10-18 | キーパー株式会社 | boots |
| JPH11132327A (en) * | 1997-10-30 | 1999-05-21 | Toyo Tire & Rubber Co Ltd | Bellows |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4617005B2 (en) | 2011-01-19 |
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