JPS6230627Y2 - - Google Patents
Info
- Publication number
- JPS6230627Y2 JPS6230627Y2 JP3217082U JP3217082U JPS6230627Y2 JP S6230627 Y2 JPS6230627 Y2 JP S6230627Y2 JP 3217082 U JP3217082 U JP 3217082U JP 3217082 U JP3217082 U JP 3217082U JP S6230627 Y2 JPS6230627 Y2 JP S6230627Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- joint
- side fitting
- dust
- fitted
- 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
Links
- 239000000428 dust Substances 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 229920002725 thermoplastic elastomer Polymers 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Description
【考案の詳細な説明】
この考案は、等速ジヨイントや車両のステアリ
ング機構などのジヨイント部に使用される軟質合
成樹脂及び熱可塑性エラストマー等のダストブー
ツの取付け構造に関する。[Detailed Description of the Invention] This invention relates to a structure for attaching a dust boot made of soft synthetic resin, thermoplastic elastomer, or the like used for a joint part of a constant velocity joint or a steering mechanism of a vehicle.
ジヨイント等の潤滑用グリースの保持やダスト
或は水など異物の侵入を防止するために蛇腹状の
フレキシブルなダストブーツがジヨイント部に装
着されるが、装置の軽量化や耐熱性の要求によ
り、従来使用されていたゴムのダストブーツに代
えて軟質合成樹脂及び熱可塑性エラストマー等の
ダストブーツがジヨイント部に装着される場合が
ある。しかし、軟質合成樹脂及び熱可塑性エラス
トマーは可という性をもつもののゴムほどの弾性
をもたないことから、そのシール性を向上させる
ために、軸側嵌合部の上から帯状のクランプを締
着する必要があつて、部品点数が多くなると共に
取付工数も増加する問題があつた。 A bellows-shaped flexible dust boot is attached to the joint in order to retain lubricating grease in the joint and to prevent the intrusion of foreign substances such as dust and water. In place of the rubber dust boots used, dust boots made of soft synthetic resin, thermoplastic elastomer, or the like may be attached to the joint. However, although soft synthetic resins and thermoplastic elastomers are malleable, they do not have the same elasticity as rubber, so in order to improve their sealing properties, a band-shaped clamp is tightened over the shaft side fitting part. Therefore, there was a problem that the number of parts increased and the number of installation steps also increased.
この考案は、上記の問題点を解消するためにな
されたもので、ジヨイントの軸側嵌合部に帯状の
クランプを使用せずに必要なシール性を保持させ
てダストブーツを取付けることができるダストブ
ーツの取付け構造を提供することを目的とする。 This idea was made in order to solve the above problems, and it is possible to attach a dust boot to the shaft side fitting part of the joint without using a band-shaped clamp while maintaining the necessary sealing performance. The purpose is to provide a mounting structure for boots.
以下、この考案の実施例を図面に基づいて説明
すると、第１図はジヨイントの断面図を、第２図
はその軸側嵌合部１の拡大断面図を示している。
ダストブーツ２は軟質合成樹脂及び熱可塑性エラ
ストマー等、例えば、ポリアミド系、ポリウレタ
ン系又はポリエステル系樹脂などにより製造さ
れ、ジヨイント外輪３とジヨイント軸４との間に
その両端の装着部を密封状態で装着して取付けら
れる。この時、ジヨイント外輪３へのダストブー
ツ２の取付けは、ダストブーツ２の端部をジヨイ
ント外輪３へ外嵌させ、この上から帯状のクラン
プ５を締付けて行なわれる。一方ダストブーツ２
の軸側嵌合部１はジヨイント軸４に嵌合固定され
るが、ジヨイント軸４の外周部には全周に凹部６
とこれに隣接する凸部７が設けられ、この凹部６
には余地を残してクロロプレン等の弾性体からな
るシール環８が嵌入される。また、軸側嵌合部１
はジヨイント軸４に密に嵌挿可能な円筒形に形成
され、その内周面にリング状の突起部１ａが設け
られ、さらに、先端部には筒状のスカート部１ｂ
が設けられている。なお、リング状の突起部１ａ
は軸側嵌合部１の内周面の全面に形成しても、１
部を切り欠いて断続的に形成してもよい。このよ
うに形成されたダストブーツ２の軸側嵌合部１
は、その突起部１ａをジヨイント軸４の凹部６の
余地に嵌め込まれるように、ジヨイント軸４の外
周部に軟質合成樹脂及び熱可塑性エラストマーの
もつ剛性と柔軟性をもつて密に嵌合固定される。
この状態で軸側嵌合部１は、シール環８により良
好なシール性が維持されると共に、ジヨイントが
傾動した際にもスカート部１ｂがジヨイント軸４
に良好に密着し、この部分でのシール性を維持す
ることができる。また、傾動時のダストブーツ２
のズレや抜けは突起部１ａと凹部６の嵌合により
防止することができ、帯状のクランプを使用して
ジヨイント軸に締着固定しなくとも、必要上充分
な取付強度が得られる。 Hereinafter, an embodiment of this invention will be described based on the drawings. FIG. 1 shows a cross-sectional view of the joint, and FIG. 2 shows an enlarged cross-sectional view of the shaft-side fitting portion 1 thereof.
The dust boot 2 is made of soft synthetic resin, thermoplastic elastomer, etc., such as polyamide, polyurethane, or polyester resin, and is installed between the joint outer ring 3 and the joint shaft 4 with the mounting portions at both ends sealed. installed. At this time, the dust boot 2 is attached to the joint outer ring 3 by fitting the end of the dust boot 2 onto the joint outer ring 3 and tightening the band-shaped clamp 5 from above. On the other hand, dust boots 2
The shaft-side fitting part 1 is fitted and fixed to the joint shaft 4, but the joint shaft 4 has a recess 6 around the entire outer circumference.
and a convex portion 7 adjacent to this, and this concave portion 6
A seal ring 8 made of an elastic material such as chloroprene is inserted with a space left in the hole. In addition, the shaft side fitting part 1
is formed into a cylindrical shape that can be tightly fitted into the joint shaft 4, and has a ring-shaped projection 1a on its inner peripheral surface, and a cylindrical skirt 1b at its tip.
is provided. Note that the ring-shaped protrusion 1a
Even if it is formed on the entire inner circumferential surface of the shaft side fitting part 1, 1
It may be formed intermittently by cutting out portions. Shaft side fitting part 1 of dust boot 2 formed in this way
is tightly fitted and fixed to the outer periphery of the joint shaft 4 with the rigidity and flexibility of the soft synthetic resin and thermoplastic elastomer so that the protrusion 1a is fitted into the recess 6 of the joint shaft 4. Ru.
In this state, the shaft-side fitting part 1 maintains good sealing performance due to the seal ring 8, and even when the joint is tilted, the skirt part 1b is attached to the joint shaft 4.
It adheres well to the area and can maintain sealing performance in this area. In addition, dust boots 2 when tilting
Misalignment or coming off can be prevented by fitting the protrusion 1a and the recess 6, and sufficient mounting strength can be obtained without using a band-shaped clamp to securely fix the joint to the joint shaft.
なお、実験によれば、ジヨイント軸径15mmの場
合、ダストブーツの軸側嵌合部１の各部の寸法
を、一例として、厚さ２mm、スカート部１ｂの厚
さ1.75mm、同長さ３mm、突起部１ａの高さ0.75mm
とした時に良好なシール性が得られた。 According to experiments, when the joint shaft diameter is 15 mm, the dimensions of each part of the shaft side fitting part 1 of the dust boot are, for example, 2 mm thick, 1.75 mm thick of the skirt part 1b, and 3 mm long. Height of protrusion 1a: 0.75mm
Good sealing performance was obtained when
以上のように、この考案に係るダストブーツの
取付け構造によれば、ジヨイント軸に装着される
ダストブーツの軸側嵌合部の内周面にリング状の
突起部を設け、この軸側嵌合部の先端に筒状のス
カート部を設け、ジヨイント軸の外周に設けられ
た凹部の一部に弾性体のシール環を嵌め込むと共
に、シール環の上から軸側嵌合部を外嵌させ、凹
部の余地に突起部を嵌め込むように構成したか
ら、軟質合成樹脂及び熱可塑性エラストマー等の
ダストブーツであつても締付用のクランプを使用
せずに良好なシール性を保持して取付けることが
でき、部品点数を減少させ、取付け工数を削減す
る効果がある。また、ダストブーツの先端部に設
けたスカート部により、ジヨイント軸の傾動時に
も優れたシール性を保持して、グリースの漏れや
ダストの侵入を防止することができる。 As described above, according to the dust boot mounting structure according to this invention, a ring-shaped protrusion is provided on the inner peripheral surface of the shaft-side fitting portion of the dust boot that is attached to the joint shaft, and this shaft-side fitting portion is provided with a ring-shaped protrusion. A cylindrical skirt part is provided at the tip of the joint shaft, a seal ring made of an elastic body is fitted into a part of the recess provided on the outer periphery of the joint shaft, and a shaft side fitting part is externally fitted from above the seal ring, Since the structure is such that the protrusion fits into the space in the recess, even dust boots made of soft synthetic resin or thermoplastic elastomer can be installed while maintaining good sealing performance without using a tightening clamp. This has the effect of reducing the number of parts and installation man-hours. Further, the skirt portion provided at the tip of the dust boot maintains excellent sealing performance even when the joint shaft is tilted, thereby preventing grease leakage and dust intrusion.
図はこの考案の実施例を示し、第１図はダスト
ブーツ付ジヨイントの断面図、第２図はダストブ
ーツ軸側嵌合部の拡大断面図である。
１……軸側嵌合部、１ａ……突起部、１ｂ……
スカート部、２……ダストブーツ、４……ジヨイ
ント軸、６……凹部、７……突部、８……シール
環。
The figures show an embodiment of this invention; FIG. 1 is a cross-sectional view of a joint with a dust boot, and FIG. 2 is an enlarged cross-sectional view of a fitting portion on the shaft side of the dust boot. 1...Shaft side fitting part, 1a...Protrusion part, 1b...
Skirt portion, 2...Dust boot, 4...Joint shaft, 6...Recess, 7...Protrusion, 8...Seal ring.
Claims (1)
嵌合部の内周面にリング状の突起部が設けられ、
該軸側嵌合部の先端部に筒状のスカート部が延設
され、前記ジヨイント軸の外周に設けられた凹部
の一部に弾性体のシール環が嵌め込まれ、該シー
ル環の上からダストブーツの前記軸側嵌合部が外
嵌され、前記凹部の余地に前記突起部が嵌入され
たことを特徴とするダストブーツの取付け構造。 A ring-shaped protrusion is provided on the inner peripheral surface of the shaft-side fitting part of the dust boot that is attached to the joint shaft.
A cylindrical skirt portion extends from the tip of the shaft-side fitting portion, and an elastic seal ring is fitted into a part of the recess provided on the outer periphery of the joint shaft, and dust is removed from above the seal ring. A dust boot mounting structure characterized in that the shaft-side fitting part of the boot is fitted externally, and the projection part is fitted into the space of the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3217082U JPS58135563U (en) | 1982-03-08 | 1982-03-08 | Dust boot installation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3217082U JPS58135563U (en) | 1982-03-08 | 1982-03-08 | Dust boot installation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58135563U JPS58135563U (en) | 1983-09-12 |
| JPS6230627Y2 true JPS6230627Y2 (en) | 1987-08-06 |
Family
ID=30043800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3217082U Granted JPS58135563U (en) | 1982-03-08 | 1982-03-08 | Dust boot installation structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58135563U (en) |
-
1982
- 1982-03-08 JP JP3217082U patent/JPS58135563U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58135563U (en) | 1983-09-12 |
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