JPH0272270A - Mounting method for dust cover - Google Patents
Mounting method for dust coverInfo
- Publication number
- JPH0272270A JPH0272270A JP21986088A JP21986088A JPH0272270A JP H0272270 A JPH0272270 A JP H0272270A JP 21986088 A JP21986088 A JP 21986088A JP 21986088 A JP21986088 A JP 21986088A JP H0272270 A JPH0272270 A JP H0272270A
- Authority
- JP
- Japan
- Prior art keywords
- dust cover
- cover
- arm
- opening
- insertion side
- 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
Links
- 239000000428 dust Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims description 5
- 238000003780 insertion Methods 0.000 claims abstract description 31
- 230000037431 insertion Effects 0.000 claims abstract description 29
- 238000000605 extraction Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
発明の目的
〔産業上の利用分野〕
本発明は、例えばボールジヨイント等可動接合部にダス
トカバーの装着される一般機械装置のそのダストカバー
の装着方法に関する。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Field of Industrial Application] The present invention relates to a method for attaching a dust cover to a general mechanical device in which a dust cover is attached to a movable joint such as a ball joint.
従来、第４図に示される如く、被装着物としてのハウジ
ング１０８の外周面１１０の適所に形成したダストカバ
ー嵌合溝１１２に、ダストカバー１２０の挿入側開口部
１２６を嵌着させ、かつ必要によりサークリップ１１４
を装着して、該嵌着部のシール性及びダストカバー１２
０の耐引き抜き性を得る様にした機械装置の一例である
ボールジヨイントとしては、実開昭６１−８８８７４号
などが挙げられる。Conventionally, as shown in FIG. 4, an insertion side opening 126 of a dust cover 120 is fitted into a dust cover fitting groove 112 formed at a proper position on the outer circumferential surface 110 of a housing 108 as an object to be mounted, and the insertion side opening 126 of a dust cover 120 is fitted into Circlip 114
to improve the sealing performance of the fitting part and the dust cover 12.
An example of a ball joint, which is an example of a mechanical device designed to obtain a pull-out resistance of 0, is disclosed in Japanese Utility Model Application No. 61-88874.
例えば上述の如きポールジヲィン）１（１１にお−て、
被装着物であるハウジング１０８に対するダストカバー
１２０の装着作業性を優先すると、ハウジング１０８の
開口１０９外縁のフランジ部１１１とダストカバー１２
０の挿入側聞口１２５内径との寸法差を小さくしなけれ
ばならない。そのためハウジング１０８のダストカバー
嵌合溝１１２を深くしてダストカバー１２０の耐引ＩＩ
性を向上させると、嵌着部におけるダストカバー１２０
の締め代が不足し、嵌着部のシール性が著しく低下し、
本来確実にシールされるべき可動接合部にごみや水分が
侵入する恐れが発生するという問題があった。For example, in the above-mentioned Paul Gion) 1 (11),
If priority is given to the workability of attaching the dust cover 120 to the housing 108, which is the object to be attached, the flange portion 111 on the outer edge of the opening 109 of the housing 108 and the dust cover 12
The dimensional difference with the inner diameter of the insertion side opening 125 of 0 must be made small. Therefore, the dust cover fitting groove 112 of the housing 108 is deepened to improve the dust cover 120's pull resistance.
In order to improve the performance, the dust cover 120 at the fitting part
The tightness is insufficient, and the sealing performance of the fitting part is significantly reduced.
There is a problem in that dirt and moisture may enter the movable joint, which should originally be reliably sealed.
これとは逆に、ダストカバー嵌合溝１１２を浅くして嵌
着部における締め代を大きく採ると、ダストカバー１２
０の挿入側開口部１２６とダストカバー嵌合溝１１２と
の引っ掛かりが小さくなり、ダストカバー１２０の耐引
き抜き荷重が極めて低くなる問題があった。On the contrary, if the dust cover fitting groove 112 is made shallow and the tightening margin at the fitting part is large, the dust cover 12
There was a problem in that the engagement between the insertion side opening 126 of the dust cover 120 and the dust cover fitting groove 112 became small, and the pull-out load resistance of the dust cover 120 became extremely low.
本発明の課題は、ダストカバーを有する機械装置におけ
る上述した装着作業性、シール性、耐引き抜き性が同時
に満足されないという問題を解決し、それらを同時に満
たすことのできるダストカバーの装着方法を提供するこ
とにある。An object of the present invention is to solve the problem that the above-mentioned installation workability, sealing performance, and pull-out resistance are not satisfied at the same time in a mechanical device having a dust cover, and to provide a method for installing a dust cover that can satisfy these requirements at the same time. There is a particular thing.
発明の構成
〔課題を解決するための手段〕
両端に開口を有するダストカバーの挿入側開口部を被装
着物の端面に密接させておき、気体吸引力により、ダス
トカバーの外表面を吸着して外径方向へ引っ張ることに
よりダストカバーの挿入側開口部の内径を拡径し、被装
着物のダストカバー嵌合溝に挿入側開口部を嵌着する。Structure of the Invention [Means for Solving the Problem] The insertion side opening of a dust cover having openings at both ends is brought into close contact with the end surface of the object to be attached, and the outer surface of the dust cover is adsorbed by gas suction force. By pulling in the outer diameter direction, the inner diameter of the insertion side opening of the dust cover is expanded, and the insertion side opening is fitted into the dust cover fitting groove of the object to be attached.
以下本発明の実施例を、可動接合部にダストカバーの装
着された機械装置としてのポールジヲィントを例にとシ
、図面に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings, taking as an example a pole joint as a mechanical device in which a dust cover is attached to a movable joint.
第１図は小組みされたポールジヨイント本体２ヘダスト
力バー２０を装着する状態を表わし、第２図はダストカ
バー２０が装着された後のボールジヲイント１を表して
いる。FIG. 1 shows a state in which a dust force bar 20 is attached to a small assembled pole joint body 2, and FIG. 2 shows a ball joint 1 after a dust cover 20 is attached.
図において、３は鍔部５を有する柄４と球頭部６とよす
成るポールスタッド、７はベアリング、８はハウジング
である。In the figure, 3 is a pole stud consisting of a handle 4 having a flange 5 and a ball head 6, 7 is a bearing, and 8 is a housing.
ポールスタッド３の球頭部６はベアリング７に摺動自在
に抱持され、柄部４はハウジング８の開口９から突出さ
れている。The ball head 6 of the pole stud 3 is slidably held in a bearing 7, and the handle 4 projects from an opening 9 in the housing 8.
ハウジング８は、ポールスタッド収納後に底部に閉止板
が加締固定されており、開口９の外縁には環状の７ラン
グ部１１が形成されている。また、ハウジング８の外肩
部１０には、７ラング部１１に隣接して、環状のカバー
嵌合溝１２が形成されている。A closing plate is crimped and fixed to the bottom of the housing 8 after the pole stud is housed, and an annular seven-lung portion 11 is formed at the outer edge of the opening 9. Furthermore, an annular cover fitting groove 12 is formed in the outer shoulder portion 10 of the housing 8 adjacent to the seven rung portions 11 .
ダストカバー２０は、ゴム等の弾性材料よシ成り、両端
に挿入側開口２５及び反挿入側開口２２を有する略釣鐘
状であシ、両開口２５．２２の中間部分は、外径方向へ
膨出した円筒状の胴部２１となっている。The dust cover 20 is made of an elastic material such as rubber, and has an approximately bell-shaped opening 25 on the insertion side and an opening 22 on the non-insertion side at both ends. It has a protruding cylindrical body section 21.
反挿入側開口部２３には、合成樹脂製の補強環２４が埋
設されている。また、挿入側開口２５の内径は、ハウジ
ング８の７ラング部１１外径及びダストカバー嵌合溝１
２外径より小ざい。A reinforcing ring 24 made of synthetic resin is embedded in the opposite-to-insertion side opening 23 . Furthermore, the inner diameter of the insertion side opening 25 is the same as the outer diameter of the seventh rung portion 11 of the housing 8 and the dust cover fitting groove 1.
2. Smaller than the outer diameter.
３０はダストカバー２０の装着時、その外表面２７を吸
着して外径方向へ引っ張るアームである。Reference numeral 30 denotes an arm that attracts the outer surface 27 of the dust cover 20 and pulls it in the outer radial direction when the dust cover 20 is attached.
このアーム３０は第３図に示す如く、４本設けられてい
る。アーム３０の一端はダストカバー２０を吸着する吸
着部３２が形成されている。As shown in FIG. 3, four arms 30 are provided. A suction portion 32 for suctioning the dust cover 20 is formed at one end of the arm 30 .
他端（図示せず）は、気体吸収装置（図示せず）に連結
されている。The other end (not shown) is connected to a gas absorption device (not shown).
アーム３０は断面略四角形で、内部には吸気路３１が貫
通形成され、この吸気路３１は気体吸引装置と、吸着部
３２内に形成された吸引部３３とを結んでいる。また、
アーム３０は、半径方向及び軸線方向に可動となってい
る。The arm 30 has a substantially rectangular cross section, and an intake passage 31 is formed therein, and this intake passage 31 connects the gas suction device and a suction section 33 formed within the suction section 32 . Also,
The arm 30 is movable in the radial and axial directions.
次に、このアーム３０により、上述のダストカバー２０
を被装着物であるハウジング８に装着する方法について
説明する。Next, the above-mentioned dust cover 20 is
A method for attaching the housing 8 to the housing 8, which is an object to be attached, will be explained.
まず、第１図に２点鎖線で示す如く、ダストカバー２０
の挿入側開口２６にポールスタッド３の柄部４を挿通し
てダストカバー２０の挿入側開口部２６をハウジング８
の端面１３上に設置する。First, as shown by the two-dot chain line in FIG.
The handle part 4 of the pole stud 3 is inserted into the insertion side opening 26 of the dust cover 20, and the insertion side opening 26 of the dust cover 20 is inserted into the housing 8.
is installed on the end face 13 of.
次にアーム３０の吸着部３２をダストカバー２０の胴部
２１外表面２７に当接させ、前述の気体吸引装置を作動
させて吸気路３１を通じて吸引部３３内の気体を吸引す
る。このことにより、ダストカバー２０はアーム３０の
吸着部３２に強く密着する。Next, the suction section 32 of the arm 30 is brought into contact with the outer surface 27 of the body section 21 of the dust cover 20, and the aforementioned gas suction device is activated to suction the gas in the suction section 33 through the suction path 31. As a result, the dust cover 20 is brought into close contact with the suction portion 32 of the arm 30.
その後、アーム３０にダストカバー２０を密着させたま
ま、アーム３０を外径方向へ開いてダストカバー２０を
外径方向へ引っ張り、挿入側開口２５の内径をハウジン
グ８の７ラング部１１の外径よりも大きく拡径すると共
に、アーム３０を挿入方向に移動させてその挿入側開口
部２６にフランジ部１１を通過させる。After that, while keeping the dust cover 20 in close contact with the arm 30, open the arm 30 in the outer diameter direction and pull the dust cover 20 in the outer diameter direction, so that the inner diameter of the insertion side opening 25 is adjusted to the outer diameter of the seventh rung portion 11 of the housing 8. At the same time, the arm 30 is moved in the insertion direction to allow the flange portion 11 to pass through the insertion side opening 26.
そしてダストカバー２０の挿入側開口部２６がハウジン
グ８のダストカバー嵌合溝１２に対向する位置で気体吸
引装置の作動を中止してダストカバー２０をアーム３０
から離し、ダストカバー嵌合溝１２にダストカバー２０
の挿入側開口部２６を嵌着させる。その際挿入側開口２
５の内径は、上述の如くダストカバー嵌合溝１２外径よ
りも小ざ〈形成されているため、予め設定した締め代分
の緊ば〈力を持ってダストカバー嵌合溝１２に密接する
。Then, at a position where the insertion side opening 26 of the dust cover 20 faces the dust cover fitting groove 12 of the housing 8, the operation of the gas suction device is stopped, and the dust cover 20 is inserted into the arm 30.
Separate the dust cover 20 from the dust cover fitting groove 12.
The insertion side opening 26 is fitted. At that time, the insertion side opening 2
As mentioned above, the inner diameter of the dust cover fitting groove 12 is smaller than the outer diameter of the dust cover fitting groove 12. .
その後、必要によυ嵌着部のシール性及び耐引き抜き性
をざらに向上させるために、第２図に示す如く、挿入側
開口部２６にサークリップ１４を装着する。Thereafter, in order to roughly improve the sealing performance and pull-out resistance of the υ fitting part, the circlip 14 is attached to the insertion side opening 26 as shown in FIG. 2, if necessary.
上記実施例においては、アームが４本であるが、アーム
の数は、本実施例に限ったものではない。In the above embodiment, there are four arms, but the number of arms is not limited to this embodiment.
また、アームにダストカバーを密着させた際、ダストカ
バーの反挿入側開口部を挿入方向に押圧する押圧手段を
設けて、ダストカバーの被装着物への装着を補助しても
良い。Further, when the dust cover is brought into close contact with the arm, a pressing means may be provided to press the opening on the side opposite to the insertion side of the dust cover in the insertion direction to assist in attaching the dust cover to the object to be attached.
効 果
以上のように本発明によれば、ダストカバーの挿入側開
口を自在に拡径することができるだめ、ダストカバー嵌
合溝に対するダストカバー挿入側開口の締め代を充分に
きつく設定しても、ダストカバー挿入側開口内径よりは
るかに大きな径の被装着物の引き抜き防止手段としての
フランジ部をダストカバー挿入側開口は極めて容易に越
えることができるので、フランジ部の外径方向への張り
出しを大きくしてダストカバーの耐引き抜き荷重を高め
ることができると同時に、ダストカバー嵌合溝に対する
締め代をきつくして嵌着部のシール性を高めることがで
き、しかもこの様に耐引き抜き性及びシール性を同時に
高めた場合においても、ダストカバーの被装着性を低下
させることがない。Effects As described above, according to the present invention, since the diameter of the insertion side opening of the dust cover can be freely expanded, the tightening margin of the dust cover insertion side opening with respect to the dust cover fitting groove is set sufficiently tight. However, the dust cover insertion side opening can very easily go over the flange part, which is used as a means to prevent the attached object from being pulled out and whose diameter is much larger than the inner diameter of the dust cover insertion side opening, so the flange part overhangs in the outer diameter direction. By increasing the pull-out resistance of the dust cover, it is possible to increase the pull-out load of the dust cover, and at the same time, by tightening the interference with respect to the dust cover fitting groove, it is possible to improve the sealing performance of the fitting part. Even if the sealing performance is improved at the same time, the ease of attaching the dust cover will not be reduced.
第１図は本発明の実施例による、ダストカバー装着途中
のボールジヨイントの断面平面図。第２図は第１図のボ
ールシラインドのダストカバー装着後の断面平面図。第
３図は第１図の１−１線断面図。第４図は従来のボール
ジヨイントの断面平面図である。
（記号の説明）
８・・・・・・被 装 着 物。 １２・・・・・・ダ
ストカバー嵌合溝。
１３・・・・・・端 面６２０・・・−・・ダス
トカバー。
２６・・・・・−挿入側開口部。 ２７・・・・・・外
表 面。
第１図FIG. 1 is a sectional plan view of a ball joint in the middle of installing a dust cover according to an embodiment of the present invention. FIG. 2 is a cross-sectional plan view of the ball shield shown in FIG. 1 after the dust cover is attached. FIG. 3 is a sectional view taken along line 1-1 in FIG. 1. FIG. 4 is a cross-sectional plan view of a conventional ball joint. (Explanation of symbols) 8...Item to be attached. 12...Dust cover fitting groove. 13...End surface 620...Dust cover. 26...-Insertion side opening. 27...Outer surface. Figure 1
Claims (1)
２６を被装着物８の端面１３に密接させておき、気体吸
引力により、前記ダストカバー２０の外表面２７を吸着
して外径方向へ引っ張ることにより前記ダストカバー２
０の挿入側開口部２６の内径を拡径し、前記被装着物８
のダストカバー嵌合溝１２に該挿入側開口部２６を嵌着
することを特徴とするダストカバーの装着方法。The insertion side opening 26 of the dust cover 20, which has openings at both ends, is kept in close contact with the end surface 13 of the object to be attached 8, and the outer surface 27 of the dust cover 20 is attracted and pulled in the outer radial direction by gas suction force. Possibly the dust cover 2
The inner diameter of the insertion side opening 26 of 0 is expanded, and the
A method for installing a dust cover, which comprises fitting the insertion side opening 26 into the dust cover fitting groove 12 of the dust cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21986088A JPH0272270A (en) | 1988-09-02 | 1988-09-02 | Mounting method for dust cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21986088A JPH0272270A (en) | 1988-09-02 | 1988-09-02 | Mounting method for dust cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0272270A true JPH0272270A (en) | 1990-03-12 |
Family
ID=16742190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21986088A Pending JPH0272270A (en) | 1988-09-02 | 1988-09-02 | Mounting method for dust cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0272270A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008019090A (en) * | 2006-07-14 | 2008-01-31 | Mitsubishi Heavy Ind Ltd | Web folding device and rotary press |
| JP2009014124A (en) * | 2007-07-05 | 2009-01-22 | Musashi Seimitsu Ind Co Ltd | Method of mounting boots to ball joint and its boots mounting arrangement |
-
1988
- 1988-09-02 JP JP21986088A patent/JPH0272270A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008019090A (en) * | 2006-07-14 | 2008-01-31 | Mitsubishi Heavy Ind Ltd | Web folding device and rotary press |
| JP2009014124A (en) * | 2007-07-05 | 2009-01-22 | Musashi Seimitsu Ind Co Ltd | Method of mounting boots to ball joint and its boots mounting arrangement |
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