JPH0743495Y2 - Constant velocity joint sealing device - Google Patents
Constant velocity joint sealing deviceInfo
- Publication number
- JPH0743495Y2 JPH0743495Y2 JP14014389U JP14014389U JPH0743495Y2 JP H0743495 Y2 JPH0743495 Y2 JP H0743495Y2 JP 14014389 U JP14014389 U JP 14014389U JP 14014389 U JP14014389 U JP 14014389U JP H0743495 Y2 JPH0743495 Y2 JP H0743495Y2
- Authority
- JP
- Japan
- Prior art keywords
- adapter
- boot
- outer ring
- folded
- diameter
- 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 - Fee Related
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は等速ジョイントのシール装置に関し、特に軸
方向へのプランジング作用がなく、トルク伝達機能のみ
をもったいわゆる固定型等速ジョイントにおけるブーツ
を用たシール装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sealing device for a constant velocity joint, particularly in a so-called fixed type constant velocity joint that has no plunging action in the axial direction and has only a torque transmitting function. The present invention relates to a sealing device using boots.
固定型等速ジョイントにおいて、ジョイント外輪の小径
側端部とその端部の開口を貫通するシャフトとの間にゴ
ム製のブーツを取付けたシール装置を構成することは従
来公知である（例えば、実開平１−59733号公報参
照）。In a fixed type constant velocity joint, it is conventionally known to configure a seal device in which a rubber boot is attached between a small-diameter side end portion of a joint outer ring and a shaft penetrating an opening of the end portion (for example, actual (See Kaihei 1-59733).
またこのようなブーツとして、第６図に示すようにラッ
パ状に径が拡大したテーパ部30及びそのテーパ部30の大
径端部を外向きにわん曲させて折返えし部31を形成した
ブーツ32を用い、そのテーパ部30の小径端部をシャフト
33のまわりに固定し、折返えし部31の先端を筒状の金属
製アダプタ34の一端に固定する共に、そのアダプタ34を
外輪35の端面に固定した構造のシール装置も従来公知で
ある（実開昭62−2837号公報）。As such a boot, as shown in FIG. 6, a tapered portion 30 having a trumpet-shaped enlarged diameter and a large-diameter end portion of the tapered portion 30 are bent outward to form a folded portion 31. The boot 32 is used, and the small-diameter end of the tapered portion 30 is used as the shaft.
A sealing device having a structure in which it is fixed around 33, the tip of the folded-back portion 31 is fixed to one end of a cylindrical metal adapter 34, and the adapter 34 is fixed to the end surface of the outer ring 35 is also known ( (Shokai 62-2837 publication).
上記のごときアダプタ34を用いると、外輪35自体にブー
ツ取付部を設ける必要がないため、外輪35の軸方向の長
さはジョイントに必要な最小限の長さでよい利点があ
る。またブーツ32の折返えし部31がアダプタ34の内側に
収納されるため、従来一般の蛇腹形ブーツに比べてコン
パクトであるとともに高速回転時におけるブーツ32の膨
張がアダプタ34により制限され、一定以上膨張すること
を防止することができる。When the adapter 34 as described above is used, it is not necessary to provide a boot attachment portion on the outer ring 35 itself, and therefore, there is an advantage that the axial length of the outer ring 35 may be the minimum length required for the joint. Further, since the folded-back portion 31 of the boot 32 is housed inside the adapter 34, the boot 32 is more compact than a conventional general bellows-shaped boot, and the expansion of the boot 32 at the time of high speed rotation is limited by the adapter 34, and a certain amount or more. It is possible to prevent expansion.
しかしながら、前掲の実開平１−59733号公報に示され
たように、ブーツを外輪の一端に直接取付ける構造のも
のは、ブーツの取付のために外輪の軸方向の長さが長く
なり、外輪の重量が増大する問題がある。However, as shown in Japanese Utility Model Laid-Open No. 1-59733, the structure in which the boot is directly attached to one end of the outer ring has a longer axial length of the outer ring due to the attachment of the boot, and There is a problem of increased weight.
また、第６図のように折返えし部31を有するブーツ31を
アダプタ34を介して外輪35に取付けるようにしたもの
は、ブーツ32の折返えし部31をその内部に収納する必要
があるため、軸方向の寸法が長くなる欠点がある。Further, in the case where the boot 31 having the folded-back portion 31 is attached to the outer ring 35 through the adapter 34 as shown in FIG. 6, the folded-back portion 31 of the boot 32 needs to be housed therein. Therefore, there is a drawback that the dimension in the axial direction becomes long.
アダプタ34が軸方向に長くなる原因は、そのアダプタ34
によりブーツ31を外輪35に固定する機能と、ブーツ31の
膨張を押さえる機能の両方を兼ねさせたところにあると
考えられる。The reason that the adapter 34 becomes longer in the axial direction is that the adapter 34
Therefore, it is considered that it has both the function of fixing the boot 31 to the outer ring 35 and the function of suppressing the expansion of the boot 31.
そこで、この考案は上記の二つの機能をアダプタと外輪
にそれぞれ分担させることにより、外輪が軸方向へ長く
なる分量をできるだけ小さく抑えながら、アダプタの長
さを短くできるようにしたシール装置を提供することを
課題とする。Therefore, the present invention provides a sealing device in which the adapter and the outer ring are made to share the above two functions, respectively, and the length of the adapter can be shortened while keeping the amount of axial extension of the outer ring as small as possible. This is an issue.
この考案は、上記の課題を解決するために、ラッパ状に
径を拡大させて形成したテーパ部と、そのテーパ部の大
径側を外向きにわん曲させて形成した折返えし部とを有
するブーツをシャフトのまわりに嵌め、テーパ部の小径
端部をシャフトのまわりに固定すると共に、折返えし部
の先端部をアダプタを介して外輪に固定してなる等速ジ
ョイントのシール装置において、上記のブーツの折返え
し部の先端部をアダプタの一端部に結合一体化し、アダ
プタの他端部を外輪の外径面に圧入固定し、その圧入固
定部分の外輪内径面にブーツの折返えし部に対向し、か
つジョイントの作動角に適合した傾斜角を有するテーパ
面を形成した構成としたものである。In order to solve the above-mentioned problems, this invention has a tapered portion formed by enlarging the diameter in a trumpet shape and a folded-back portion formed by bending the large diameter side of the tapered portion outward. In a sealing device for a constant velocity joint, in which a boot having is fitted around a shaft, a small-diameter end portion of a taper portion is fixed around the shaft, and a tip portion of a folded portion is fixed to an outer ring via an adapter, The tip of the folded back part of the boot is integrated with one end of the adapter, the other end of the adapter is press-fitted and fixed to the outer diameter surface of the outer ring, and the boot is folded back on the inner diameter surface of the outer ring of the press-fitted fixed part. The taper surface is formed so as to face the ridge and have an inclination angle adapted to the working angle of the joint.
ブーツの一端はシャフトに固定され、他端はアダプタを
介して外輪に固定される。高速回転時にブーツが膨張す
ると、外輪端部の内径面に形成したテーパ面で受け止め
られ、膨張が制限される。One end of the boot is fixed to the shaft, and the other end is fixed to the outer ring via an adapter. When the boot expands during high-speed rotation, it is received by the tapered surface formed on the inner diameter surface of the outer ring end portion, and expansion is limited.
第１図に示す等速ジョイントは外輪１、内輪２、外輪１
のトラック溝３と内輪２のトラック溝４の間に介在され
るボール５、各ボール５を円周方向に等間隔に保持する
保持器６、上記の内輪２の中心のセレーション７に挿入
されたシャフト８とにより構成される。外輪１の大径側
端部に取付用つば９が突設され、そのつば９を設けた側
の外輪１の開放端にカバー蓋10が嵌着される。The constant velocity joint shown in FIG. 1 has an outer ring 1, an inner ring 2 and an outer ring 1.
The balls 5 interposed between the track grooves 3 and the track grooves 4 of the inner ring 2, the cages 6 for holding the balls 5 at equal intervals in the circumferential direction, and the serrations 7 at the center of the inner ring 2 described above. And the shaft 8. A mounting collar 9 is projectingly provided on the large-diameter side end of the outer ring 1, and a cover lid 10 is fitted to the open end of the outer ring 1 on the side where the collar 9 is provided.
外輪１のトラック溝３の溝底の曲率中心Ａは、ジョイン
ト中心Ｏから前記のつば９側に離れた位置にある。また
内輪２のトラック溝４の溝底の曲率中心Ｂは、上記の中
心Ａと反対側に等距離だけ離れた位置にあり、外輪１は
つば９側が大径端部、反対側が小径端部となっている。The center of curvature A of the groove bottom of the track groove 3 of the outer ring 1 is located away from the joint center O on the side of the collar 9. Further, the center of curvature B of the groove bottom of the track groove 4 of the inner ring 2 is located at a position equidistant from the above center A, and the outer ring 1 has a large-diameter end portion on the side of the flange 9 and a small-diameter end portion on the opposite side. Has become.
外輪１の小径側端部にアダプタ固定部11が突設され、そ
のアダプタ固定部11の内径面には、外方に拡大するよう
に傾斜したテーパ面12が形成される。テーパ面12の傾斜
角はジョイントの作動角に適合するよう適宜定められ
る。An adapter fixing portion 11 is projectingly provided at an end portion on the small diameter side of the outer ring 1, and a taper surface 12 inclined so as to expand outward is formed on an inner diameter surface of the adapter fixing portion 11. The inclination angle of the tapered surface 12 is appropriately determined so as to match the working angle of the joint.
ブーツ13は柔軟性あるゴムにより形成され、ラッパ状に
径が拡大したテーパ部14と、そのテーパ部14の大径側を
外向きにわん曲させて形成した折返えし部15を有する。
テーパ部14の小径端部に筒形の取付部16を形成し、その
取付部16をシャフト８のまわりに嵌め、バント17により
固定する。また折返えし部15も先端側の径が拡大するよ
うにテーパ状になっており、その先端が外輪１のアダプ
タ固定部11より更に後方に突き出し、その突き出した部
分が取付部18になっている。The boot 13 is formed of flexible rubber, and has a tapered portion 14 having a trumpet-shaped enlarged diameter and a folded-back portion 15 formed by bending the large diameter side of the tapered portion 14 outward.
A cylindrical mounting portion 16 is formed on the small-diameter end of the tapered portion 14, and the mounting portion 16 is fitted around the shaft 8 and fixed by a bunt 17. Further, the folded-back portion 15 is also tapered so that the diameter on the tip side is enlarged, and the tip thereof projects further rearward than the adapter fixing portion 11 of the outer ring 1, and the projecting portion serves as a mounting portion 18. There is.
この取付部18とアダプタ固定部11との間に介在されるア
ダプタ19は、リング形の金属により形成され、ブーツ13
の取付部18の内外両面を強固に挾着するＵ形の屈曲部20
と、アダプタ固定部11に圧入固定される固定部21よりな
る。屈曲部20は、取付部18のテーパに沿ってテーパ状に
拡径される。固定部21は、アダプタ固定部11の端面とそ
の外径面に沿ってＬ形に屈曲され、アダプタ固定部11の
外径面に形成された溝22にかしめにより圧入固定され
る。The adapter 19 interposed between the mounting portion 18 and the adapter fixing portion 11 is made of a ring-shaped metal and has a boot 13
U-shaped bent part 20 that firmly attaches both inner and outer surfaces of the mounting part 18 of
And a fixing portion 21 press-fitted and fixed to the adapter fixing portion 11. The bent portion 20 is tapered in diameter along the taper of the mounting portion 18. The fixing portion 21 is bent into an L shape along the end surface of the adapter fixing portion 11 and its outer diameter surface, and is press-fitted and fixed in a groove 22 formed in the outer diameter surface of the adapter fixing portion 11 by caulking.
ブーツ13を上記のアダプタ19を介して外輪１に取付けた
状態において、アダプタ固定部11の内径面に形成された
テーパ面12はブーツ13の折返えし部15に若干の間隙をも
って対向する。When the boot 13 is attached to the outer ring 1 via the adapter 19, the tapered surface 12 formed on the inner diameter surface of the adapter fixing portion 11 faces the folded-back portion 15 of the boot 13 with a slight gap.
第２図に示す他の実施例は、アダプタ19の固定部21を屈
曲部20の外面側と同一径に形成したものであり（第３図
参照）、ブーツ13の折返えし部15の先端の取付部18に外
径方向の段部23を形成し、その段部23をアダプタ固定部
11の端面に押し当てるようにしたものである。段部23に
は、第３図に示すように２本の突条24が設けられ、アダ
プタ固定部11の端面に突条24を当てることによりシール
効果を増すようにしている。In another embodiment shown in FIG. 2, the fixed portion 21 of the adapter 19 is formed to have the same diameter as the outer surface side of the bent portion 20 (see FIG. 3), and the tip of the folded-back portion 15 of the boot 13 is formed. A step portion 23 in the outer diameter direction is formed on the mounting portion 18 of the, and the step portion 23 is attached to the adapter fixing portion.
It is pressed against the end face of 11. As shown in FIG. 3, the step portion 23 is provided with two ridges 24, and the ridge 24 is applied to the end surface of the adapter fixing portion 11 to enhance the sealing effect.
また、第４図及び第５図に示すように、段部23に１本の
突条25を形成し、その突条25に対向した溝26をアダプタ
固定部11の端面に形成し、突条25を強く押圧して溝26で
変形させることにより、シール効果を増すようにしても
よい。Further, as shown in FIGS. 4 and 5, one projecting ridge 25 is formed on the stepped portion 23, and a groove 26 facing the projecting ridge 25 is formed on the end face of the adapter fixing portion 11. The sealing effect may be enhanced by strongly pressing 25 and deforming it in the groove 26.
この考案の実施例は、以上のように構成され、シャフト
８の周りをブーツ13の取付部16によりシールする。また
外輪１側は、第１図の場合はアダプタ19の固定部21と外
輪１のアダプタ固定部11との間でシールし、グリースの
漏洩を防止する。また、第２図及び第４図の場合は、ア
ダプタ19の固定部21と外輪１のアダプタ固定部11との間
だけでなく、突条24、25とアダプタ固定部11との間にお
いてもシールする。The embodiment of the present invention is configured as described above, and the circumference of the shaft 8 is sealed by the mounting portion 16 of the boot 13. In the case of FIG. 1, the outer ring 1 side is sealed between the fixing portion 21 of the adapter 19 and the adapter fixing portion 11 of the outer ring 1 to prevent grease from leaking. In addition, in the case of FIG. 2 and FIG. 4, not only between the fixing portion 21 of the adapter 19 and the adapter fixing portion 11 of the outer ring 1, but also between the ridges 24 and 25 and the adapter fixing portion 11 is sealed. To do.
また、シャフト８が高速回転した場合のブーツ13の膨張
は、その折返えし部15に対向したテーパ面12で受け止め
られる。Further, the expansion of the boot 13 when the shaft 8 rotates at a high speed is received by the tapered surface 12 facing the folded-back portion 15.
以上のように、この考案はブーツの大径側端部を固定す
ると共にその固定部分を外輪と一体に結合する機能をア
ダプタに分担させ、また高速回転時におけるブーツの膨
張を制限する機能を外輪内径面のテーパ面に分担させた
構成であるので、外輪の軸方向への長さの増加をアダプ
タ固定部の長さだけに抑えることができる一方、アダプ
タの長さを大幅に短縮でき、全体としてコンパクトにな
る効果がある。As described above, the present invention makes the adapter share the function of fixing the large-diameter side end portion of the boot and integrally connecting the fixed portion with the outer ring, and also has the function of limiting the expansion of the boot at high speed rotation. Since the taper inner surface is shared, the increase in the axial length of the outer ring can be limited to the length of the adapter fixing part, while the length of the adapter can be significantly shortened. Has the effect of becoming compact.
第１図は実施例の断面図、第２図は他の実施例の一部を
示す断面図、第３図はその一部拡大断面図、第４図はそ
の他の実施例の一部を示す断面図、第５図はその一部拡
大断面図、第６図は従来例の一部を示す断面図である。 １……外輪、２……内輪、３、４……トラック溝、５…
…ボール、６……保持器、７……セレーション、８……
シャフト、９……つば、10……カバー蓋、11……アダプ
タ固定部、12……テーパ面、13……ブーツ、14……テー
パ部、15……折返えし部、16……取付部、17……バン
ド、18……取付部、19……アダプタ、20……屈曲部、21
……固定部、22、26……溝、23……段部、24、25……突
条。FIG. 1 is a sectional view of an embodiment, FIG. 2 is a sectional view showing a part of another embodiment, FIG. 3 is a partially enlarged sectional view of it, and FIG. 4 is a part of another embodiment. A sectional view, FIG. 5 is a partially enlarged sectional view thereof, and FIG. 6 is a sectional view showing a part of a conventional example. 1 ... Outer ring, 2 ... Inner ring, 3, 4 ... Track groove, 5 ...
… Ball, 6 …… Cage, 7 …… Seration, 8 ……
Shaft, 9 ... Collar, 10 ... Cover lid, 11 ... Adapter fixing part, 12 ... Tapered surface, 13 ... Boots, 14 ... Tapered part, 15 ... Folding part, 16 ... Mounting part , 17 …… Band, 18 …… Mounting part, 19 …… Adapter, 20 …… Bending part, 21
…… Fixed part, 22, 26 …… Groove, 23 …… Step, 24,25 …… Ridge.
Claims (1)
部と、そのテーパ部の大径側を外向きにわん曲させて形
成した折返えし部とを有するブーツをシャフトのまわり
に嵌め、テーパ部の小径端部をシャフトのまわりに固定
すると共に、折返えし部の先端部をアダプタを介して外
輪に固定してなる等速ジョイントのシール装置におい
て、上記のブーツの折返えし部の先端部をアダプタの一
端部に結合一体化し、アダプタの他端部を外輪の外径面
に固定し、その固定部分の外輪内径面にブーツの折返え
し部に対向したテーパ面を形成したことを特徴とする等
速ジョイントのシール装置。1. A boot having a tapered portion formed by expanding the diameter in a trumpet shape and a folded-back portion formed by bending the large diameter side of the tapered portion outwardly is fitted around a shaft. In the sealing device for a constant velocity joint, in which the small-diameter end of the tapered portion is fixed around the shaft, and the tip of the folded-back portion is fixed to the outer ring via an adapter, the folded-back portion of the boot described above. The front end of the adapter is integrated with one end of the adapter, the other end of the adapter is fixed to the outer diameter surface of the outer ring, and the tapered surface facing the folded-back portion of the boot is formed on the inner diameter surface of the outer ring of the fixed portion. A constant velocity joint sealing device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14014389U JPH0743495Y2 (en) | 1989-11-30 | 1989-11-30 | Constant velocity joint sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14014389U JPH0743495Y2 (en) | 1989-11-30 | 1989-11-30 | Constant velocity joint sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0378134U JPH0378134U (en) | 1991-08-07 |
| JPH0743495Y2 true JPH0743495Y2 (en) | 1995-10-09 |
Family
ID=31687138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14014389U Expired - Fee Related JPH0743495Y2 (en) | 1989-11-30 | 1989-11-30 | Constant velocity joint sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743495Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1538377A4 (en) * | 2002-09-10 | 2007-10-17 | Nsk Ltd | Hole cover for motor vehicle |
| KR102227949B1 (en) * | 2013-08-01 | 2021-03-12 | 지케이엔 드라이브라인 노쓰 아메리카, 인코포레이티드 | Overmoulded profile boot can assembly |
| CN117052806A (en) * | 2023-10-11 | 2023-11-14 | 万向钱潮股份公司 | Horn-shaped large-swing-angle dustproof part and ball cage type universal joint |
-
1989
- 1989-11-30 JP JP14014389U patent/JPH0743495Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0378134U (en) | 1991-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |