JPH0236972Y2 - - Google Patents
Info
- Publication number
- JPH0236972Y2 JPH0236972Y2 JP1985134723U JP13472385U JPH0236972Y2 JP H0236972 Y2 JPH0236972 Y2 JP H0236972Y2 JP 1985134723 U JP1985134723 U JP 1985134723U JP 13472385 U JP13472385 U JP 13472385U JP H0236972 Y2 JPH0236972 Y2 JP H0236972Y2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- ball
- joint
- water
- waterproof
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000007789 sealing Methods 0.000 description 14
- 230000002093 peripheral effect Effects 0.000 description 10
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004078 waterproofing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
本考案は、バンタグラフ式ワイパ等に使用され
るボールジヨイントの防水構造に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a waterproof structure of a ball joint used in a vantagraph wiper or the like.
[従来技術及び考案が解決しようとする問題点]
一般に、この種ボールジヨイント(球面継手)
は、支軸の先端部に形成されるボール部と、該ボ
ール部に球面摺動自在に外嵌されるジヨイントア
ウタとによつて構成されているが、このものを例
えば自動車用窓の窓面を拭掃するパンタグラフ式
ワイパにおけるサブステー用の軸受部材として用
いた場合に、該ボールジヨイントにおけるボール
部とジヨイントアウタとのボール摺動部に雨水等
の水が浸入しなないよう充分な防水対策を採る必
要がある。しかるに従来、ボールジヨイントの防
水対策は、ボール部が設けられる支軸にリツプ状
の鍔部を周設し、該鍔部がジヨイントアウタの周
縁部に弾性的に摺接するなどして行つているが、
これらのものは摺接面に直接水が当るものであつ
たり、また直接水が当たらないようにしたもので
あつても摺接面に付着した水が積極的に排出され
ることのないものであつて、防水性能が未だ充分
であると言えないという問題がある。[Problems to be solved by the prior art and the invention] In general, this type of ball joint (spherical joint)
is composed of a ball part formed at the tip of a support shaft and a joint outer that is fitted onto the ball part so as to be able to freely slide on a spherical surface. When used as a bearing member for a substay in a pantograph type wiper for wiping, sufficient waterproofing measures are taken to prevent water such as rainwater from entering the ball sliding part between the ball part of the ball joint and the joint outer. There is a need. Conventionally, however, waterproof measures for ball joints have been taken by providing a lip-shaped flange around the spindle on which the ball is installed, and the flange elastically slidingly contacts the peripheral edge of the joint outer. ,
These products are those that allow water to come into direct contact with the sliding surface, and even if they are designed to prevent direct contact with water, the water that adheres to the sliding surface will not be actively discharged. However, there is a problem in that the waterproof performance is still not sufficient.
[問題を解決するための手段]
本考案は、上記の如き実情に鑑みこれらの欠点
を一掃することができるボールジヨイントの防水
構造を提供することを目的として創案されたもの
であつて、支軸の上端部に形成されるボール部
と、該ボール部に上方から球面摺動自在に外嵌さ
れるジヨイントアウタとを用いてなるボールジヨ
イントにおいて、前記支軸には、外径方向に突出
していて下方からの水を下面で遮る鍔部が形成さ
れたゴム質状の防水体を嵌着する一方、前記ジヨ
イントアウタには、前記鍔部の外周縁よりも内径
側上面に押圧状に摺動接当して鍔部を外径側ほど
低い傾斜姿勢に弾性変形させてボール摺動部の封
止をする下向きの突条部と、該突条部よりも外径
側で、かつ鍔部外周縁よりも外側近傍に位置して
前記傾斜姿勢の鍔部外周縁位置よりも下方まで延
長垂下され、鍔部外周縁部位を囲繞するよう覆つ
て横方からの水を遮る覆蓋部とを設けたことを特
徴とするものである。[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a waterproof structure for a ball joint that can eliminate these drawbacks. In a ball joint that uses a ball part formed at the upper end of the shaft and a joint outer that is fitted onto the ball part from above in a spherical slidable manner, the support shaft includes a ball joint that protrudes in the outer radial direction. A rubber-like waterproof body is fitted with a flange that blocks water from below on the lower surface, and a rubber waterproof body is fitted to the joint outer in a pressing manner on the upper surface on the inner diameter side of the outer periphery of the flange. a downward protrusion that seals the ball sliding portion by elastically deforming the flange into a tilted posture lower toward the outer diameter; and a cover part that is located near the outer side of the flange, extends downward from the outer periphery of the flange in the inclined position, and surrounds and covers the outer periphery of the flange to block water from entering from the side. It is characterized by:
そして本考案は、この構成によつて、ボールジ
ヨイントにおける防水性能を著しく向上できて、
長期に亘つて常に円滑な球面摺動を行なわしめる
ことができるようにしたものである。 With this configuration, the present invention can significantly improve the waterproof performance of the ball joint.
This allows for smooth spherical sliding over a long period of time.
[実施例]
次に、本考案の実施例を図面に基づいて説明す
る。図面において、1は自動車に設けられるパン
タグラフ式のワイパであつて、該ワイパ1は、ア
ーム2とサブステー3とからなり、この両者2,
3の先端部には取付板4がそれぞれ枢結され、か
つ該取付板4にブレード5が一体的に組付けられ
ることによつて構成されれており、アーム2の基
端部は車体6側に設けられた作動軸7に一体的に
軸支され、またサブステー3の基端部は後述する
ように本考案が実施されたボールジヨイント8に
よつて車体6側に球面摺動自在に枢着されてい
る。そして、図示しないワイパモータの駆動に伴
い作動軸7が正逆回動することに応じてブレード
5が窓面の拭掃作動を行うようになつていること
等は何れも従来通りである。[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a pantograph-type wiper installed in an automobile, and the wiper 1 consists of an arm 2 and a substay 3, both of which 2,
A mounting plate 4 is pivotally connected to the distal end of each arm 3, and a blade 5 is integrally assembled to the mounting plate 4, and the base end of the arm 2 is attached to the vehicle body 6 side. The base end of the sub-stay 3 is pivoted spherically slidably toward the vehicle body 6 by a ball joint 8 in which the present invention is implemented, as will be described later. It is worn. The blade 5 performs the cleaning operation of the window surface in response to the forward and reverse rotation of the operating shaft 7 as a wiper motor (not shown) is driven, as is conventional.
前記ボールジヨイント8は、車体6側に一体的
に植設された支軸9の頂部に形成されたボール部
10と、サブステー3の基端部に一体的に取付け
られていて、ボール部10に球面摺動自在に外嵌
されるジヨイントアウタ11とを用いて構成され
るものである、さらにボールジヨイント8には支
軸9に貫挿せしめられたゴム質弾性材よりなる防
水体12が設けられている。即ち、この防水体1
2は、支軸9が貫挿する筒軸部12aと、該筒軸
部12aの上端部から外径方向に延設されて、ボ
ール摺動部への下側からの水の浸入を阻止できる
鍔部12bとによつて構成されるものであるが、
筒軸部12aは、その下半部が下側ほど太筒状に
形成されて剛体状になつている。しかも、この下
半部の内周面は支軸9よりも大径になつていて、
剛体状のものでもボール部10が貫通しやすいよ
うに配慮されているが、この内周面にはさらに鋸
歯状の突条12cが周設されていて、支軸9の外
周面に圧接し、支軸9と防水体12との接触面を
這い上がつてきた水の浸入をここで阻止するよう
になつている。 The ball joint 8 is integrally attached to a ball portion 10 formed at the top of a support shaft 9 that is integrally implanted on the vehicle body 6 side, and to a base end portion of the substay 3. The ball joint 8 is further provided with a waterproof body 12 made of a rubber elastic material and inserted through the support shaft 9. It is being That is, this waterproof body 1
2 includes a cylindrical shaft portion 12a through which the support shaft 9 is inserted, and a cylindrical shaft portion 12a extending in the outer diameter direction from the upper end of the cylindrical shaft portion 12a to prevent water from entering the ball sliding portion from below. It is composed of the flange part 12b,
The lower half of the cylindrical shaft portion 12a is formed into a cylindrical shape that becomes thicker toward the bottom, and has a rigid body shape. Moreover, the inner peripheral surface of this lower half has a larger diameter than the support shaft 9,
Although the ball part 10 is designed to be easily penetrated even by a rigid body, a sawtooth-shaped protrusion 12c is further provided on the inner circumferential surface of the ball part 12, and is pressed against the outer circumferential surface of the support shaft 9. This is designed to prevent water that has climbed up the contact surface between the support shaft 9 and the waterproof body 12 from entering.
一方、ジヨイントアウタ11にはボール部10
に球面嵌合すべく陥没状の球状摺動面11aが形
成されているが、さらにジヨイントアウタ11に
は、ジヨイントアウタ11をボール部10に球面
嵌合せしめた状態で、前記鍔部12bの外周縁よ
りも内径側上面に押圧状に摺動接当して、鍔部1
2bを外径側ほど低い傾斜姿勢に弾性変形させる
と共にボール部10と摺動面11aとの摺動面域
を封止し、水のボール摺動面域への浸入を防止す
る下向きの突条部11bが摺動面11aから続く
ように形成されている。しかもジヨイントアウタ
11には、前記下向きの突条部11bにおける外
側辺が再び下方に向けて湾曲状に折返し折曲され
るべく延長され、鍔部12bの外周縁に近接対向
する状態で前記傾斜姿勢の鍔部12b外周縁位置
よりも下方まで垂下された覆蓋部11cがさらに
形成されていて鍔部11cの外周縁部位を囲繞
し、横方から鍔部側への水の浸入を阻止する構成
になつている。 On the other hand, the joint outer 11 has a ball portion 10.
A recessed spherical sliding surface 11a is formed in order to spherically fit into the joint outer 11, and when the joint outer 11 is spherically fitted to the ball portion 10, the outer peripheral edge of the flange portion 12b The flange 1 is also pressed into sliding contact with the upper surface of the inner diameter side.
A downward protrusion that elastically deforms the ball 2b to a lower inclined position toward the outer diameter side, seals the sliding surface area between the ball portion 10 and the sliding surface 11a, and prevents water from entering the ball sliding surface area. The portion 11b is formed so as to continue from the sliding surface 11a. In addition, the joint outer 11 has an outer side of the downward protrusion 11b extended so as to be bent downward again into a curved shape, and is in the inclined position in a state close to and opposite to the outer peripheral edge of the flange 12b. A cover portion 11c is further formed to hang down below the outer peripheral edge position of the collar portion 12b, and surrounds the outer peripheral edge portion of the collar portion 11c to prevent water from entering from the side toward the collar portion. ing.
叙述の如く構成された本考案の実施例におい
て、ワイパモータの駆動でアーム2が往復揺動す
ることによつて、ブレード5による窓面の拭掃作
動が行われることになるが、この場合、サブステ
ー3も、ボール部10を中心として球面摺動する
ことになる。即ち、サブステー3は、アーム2の
揺動に従う左右方向の揺動に、車体の振動等が加
わつて三次元的な揺動をすることになり、これを
ボールジヨイント8による球面摺動によつて軸受
することになる。 In the embodiment of the present invention configured as described above, the arm 2 swings back and forth under the drive of the wiper motor, and the blade 5 wipes the window surface. 3 also slides spherically around the ball portion 10. In other words, the substay 3 undergoes three-dimensional rocking due to the vibration of the vehicle body added to the left-right rocking due to the rocking of the arm 2, and this is caused by the spherical sliding of the ball joint 8. The bearing will be mounted on the shaft.
この様にサブステー3は、ボールジヨイント8
によつて球面揺動をすることになるが、本考案に
おいては、このボールジヨイント8は極めて優れ
た防水性能を有することになる。即ち、ボールジ
ヨイント8は、突起部11bの外方に鍔部12b
外周縁位置よりも低く垂下するように設けた覆蓋
部11cの外面による防水作用によつて横方から
鍔部12b側への水の浸入を阻止する。一方、下
側から吹き込んでくる水は、殆どの鍔部12bの
下面によつて遮られてボール摺動部側への浸入が
阻止されることになる。従つて突条部11bと鍔
部12b上面との接当封止部に直接水が当ること
は殆どない。 In this way, substay 3 has ball joint 8
However, in the present invention, this ball joint 8 has extremely excellent waterproof performance. That is, the ball joint 8 has a flange 12b on the outside of the protrusion 11b.
Water intrusion from the side toward the flange 12b is prevented by the waterproof effect of the outer surface of the cover 11c, which is provided to hang lower than the outer peripheral edge position. On the other hand, water blowing in from below is blocked by the lower surface of most of the flange portions 12b and is prevented from entering the ball sliding portion side. Therefore, water hardly ever comes into direct contact with the abutting and sealing portion between the protrusion portion 11b and the upper surface of the flange portion 12b.
さらに鍔部12bの外周縁と覆蓋部11cの内
周面との間の狭い間隙を越えて奥に浸入しようと
する僅かな水は、この鍔部12bの外周部、覆蓋
部11cの内周面および突条部11bの外周面と
による所謂ラビリンス作用を受けることになつて
その勢いが著しく減殺されるため、もつて封止部
へは勢いが殆ど殺されたほんの僅かの水しか浸入
しないことになる。しかも封止部の手前まで浸入
した僅かな水は、突条部11bの押圧接当によつ
て傾斜した鍔部12bの上面を外径側に向けて積
極的に流れ落ちて外部に排出されようとする。そ
して鍔部上面に付着した僅かな水も、ジヨイント
アウタ11の球面摺動に基づき鍔部12b上面を
押圧状に摺動する突条部11bが堰提となつた状
態で傾斜下端の外径側に向けて強制的に押しやら
れることになり、よつて、鍔部12b上面の突条
部11b摺動面は、ジヨイントアウタ11の球面
摺動を利用して常に水が積極的に排出される状態
に維持されることになつて、ここに水が溜つてし
まい、そして該溜つた水が乾燥した後に、水中に
含まれている塵埃が残り、これが繰り返されるこ
とによつて次第に塵埃が積もり、これが封止部に
入り込んで封止機能が損なわれてしまうようなこ
とがなく、常に安定した封止機能を維持しえて、
封止部を越えてボール摺動部へ水が浸入してしま
うことを確実に防止できることとなり、ボールジ
ヨイント8は、従来にない極めて高い防水性能を
発揮し得て、自動車のワイパーの如く激しい雨水
が被水するような部所に設けられたとしても、長
期に亘つて常に円滑な球面軸受作動を行なわしめ
ることができる。 Furthermore, a small amount of water that attempts to penetrate deep beyond the narrow gap between the outer circumferential edge of the flange 12b and the inner circumferential surface of the cover 11c is The water is subjected to a so-called labyrinth effect by the outer circumferential surface of the protruding portion 11b, and its force is significantly reduced, so that only a small amount of water enters the sealing portion with almost all its force being suppressed. Become. In addition, the small amount of water that has entered the front of the sealing portion will actively flow down the sloping upper surface of the flange portion 12b toward the outer diameter side due to the pressure contact of the protrusion portion 11b, and will be discharged to the outside. do. Even a small amount of water adhering to the upper surface of the flange is moved to the outer diameter side of the lower end of the slope, with the protrusion 11b, which slides in a pressing manner on the upper surface of the flange 12b based on the spherical sliding of the joint outer 11, acting as a dam. Therefore, the sliding surface of the protrusion 11b on the upper surface of the flange 12b is maintained in a state in which water is always actively drained by utilizing the spherical sliding of the joint outer 11. As a result, water accumulates here, and after the accumulated water dries, the dust contained in the water remains, and as this process is repeated, the dust gradually accumulates, and this is the sealing problem. It does not get into the parts and impair the sealing function, and it always maintains a stable sealing function.
It is possible to reliably prevent water from entering the ball sliding part beyond the sealing part, and the ball joint 8 can exhibit an extremely high waterproof performance that has never been seen before, and it can be Even if the spherical bearing is installed in a location exposed to rainwater, the spherical bearing can always operate smoothly over a long period of time.
しかも、この極めて優れた防水作用は、別途格
別な防水部材を用いることなく、ジヨイントアウ
タ11を、支軸9側の鍔部12b上面に接当して
鍔部12bを外径側ほど低い傾斜姿勢に弾性変形
せしめる突条部11bの外側に、上記鍔部12b
の外周縁に対向するようにして前記傾斜姿勢の鍔
部12bの外周縁位置よりも下方まで延長垂下せ
しめた覆蓋部11cを設けて構成しただけにすぎ
ない極めて簡略化された単純構造によつて達成す
ることができ、従つて、ボールジヨイント部が徒
に複雑化されたり大型化されたりすることが全く
ないものである。 Moreover, this extremely excellent waterproofing effect can be achieved without using a special waterproofing member by bringing the joint outer 11 into contact with the upper surface of the flange 12b on the spindle 9 side, and placing the flange 12b in an inclined position that is lower toward the outer diameter. The flange portion 12b is provided on the outside of the protrusion portion 11b that is elastically deformed.
Due to the extremely simplified and simple structure, the cover part 11c is extended and hung downward from the outer peripheral edge position of the flange part 12b in the inclined position so as to face the outer peripheral edge of the flange part 12b. Therefore, the ball joint part is not unnecessarily complicated or enlarged.
さらに実施例においては、鍔部12bが形成さ
れる防水体12は、その筒軸部12aの下半部が
肉厚状と剛性的になつていると共に、該部の内径
が支軸9の径よりも太くなつているので、防水体
12を支軸9に取付ける際の作業性の点で大いに
優れているうえに、鍔部12bの弾性変形を確実
に受止め支承することになり、従つて、鍔部12
bが位置ずれしたりするような不具合がなく、前
記防水性を遺憾無く発揮し得ることになる。その
うえ、筒軸部12aの内周面には、突条12cが
周設されていて、支軸9に弾圧状に接当封止する
ようになつているので、水が筒軸部12aと支軸
9の接触面間を通つて摺動面域内に浸入しようと
しても、この突条12cの支軸9への接当によつ
て浸入が阻施されることになり、従つて、ボール
ジヨイント8の防水性に更に一段と優れたものと
することができる。 Furthermore, in the embodiment, the waterproof body 12 on which the flange 12b is formed has a lower half portion of the cylindrical shaft portion 12a that is thick and rigid, and the inner diameter of this portion is equal to the diameter of the support shaft 9. Since it is thicker than the flange 12b, it is greatly improved in terms of workability when attaching the waterproof body 12 to the support shaft 9, and it also reliably catches and supports the elastic deformation of the flange 12b. , Tsuba 12
This means that there is no problem such as misalignment of part b, and the waterproof property can be fully demonstrated. Furthermore, the inner peripheral surface of the cylindrical shaft portion 12a is provided with a protruding ridge 12c, which is designed to contact and seal the support shaft 9 in an elastic manner, so that water does not come into contact with the cylindrical shaft portion 12a. Even if an attempt is made to penetrate into the sliding surface area through the contact surfaces of the shaft 9, the penetration is prevented by the contact of the protrusion 12c with the support shaft 9, and therefore, the ball joint The waterproof property of No. 8 can be further improved.
[作用効果]
以上要するに、本考案は叙述の如く構成したも
のであるから、雨水等のボール摺動部内に浸入し
ようとする水のうち、横方からのものは覆蓋部に
よつて、また下方からのものは鍔部によつて殆ど
阻止されて、浸入しようとする水が鍔部上面と突
条部の接当部によつて形成される封止部に直接当
つてしまうことがない。[Function and Effect] In summary, since the present invention is configured as described above, water that tries to enter the ball sliding part, such as rainwater, from the side is absorbed by the cover part and from below. Most of the water is blocked by the flange, and water that attempts to enter does not come into direct contact with the sealing portion formed by the abutment between the upper surface of the flange and the protrusion.
この結果、覆蓋部内周面と鍔部外周縁との狭い
間隙から奥に浸入しようとする水は僅かとなる
が、この僅かな水は、さらに、覆蓋部内周面、鍔
部外周縁部、および突条部外周面によつて形成さ
れる空隙において所謂ラビリンス作用を受けるこ
とになつて、その勢いが著しく減殺されることに
なつて、封止部には勢いが殆ど殺されたほんの僅
かな水しか浸入しないことになるが、こうして浸
入した僅かな水は、突条部の押圧接当によつて傾
斜した鍔部の上面を封止部から遠ざかる外径側に
向けて積極的に流れ落ちて排出されようとする。
そして鍔部上面に付着した僅かな水は、ジヨイン
トアウタの球面摺動に基づき鍔部上面を押圧状に
摺動する突条部が堰堤となつた状態で傾斜下端の
外径側に向けて強制的に押しやられることにな
り、よつて、鍔部上面の突条部摺動面は、ジヨイ
ントアウタの球面摺動を利用して常に水が積極的
に排出される状態に維持されることになつて、こ
こに水が溜つてしまい、そして該溜つた水が乾燥
した後に、水中に含まれている塵埃が残り、これ
が繰り返されることによつて次第に塵埃が積も
り、これが封止部に入り込んで封止機能が濁なわ
れてしまうようなことがなく、常に安定した封止
機能を維持しえて、封止部を越えてボール摺動部
へ水が浸入してしまうことを長期に亘つて確実に
防止できて、ボールジヨイントを自動車の窓を拭
掃するワイパのサブステーの如く激しい雨水が被
水するような部所に設けたとしても、長期に亘つ
て常に確実な球面揺動を行うことができるもので
あるる。 As a result, only a small amount of water tries to penetrate deep through the narrow gap between the inner circumferential surface of the cover and the outer circumferential edge of the flange, but this small amount of water also penetrates into the inner circumferential surface of the cover, the outer circumferential edge of the flange, and The gap formed by the outer circumferential surface of the protrusion undergoes a so-called labyrinth action, and its momentum is significantly reduced, leaving only a small amount of water in the sealing part with almost no momentum. However, the small amount of water that has entered in this way actively flows down the sloped upper surface of the flange toward the outer diameter side away from the sealing part due to the pressure contact of the protruding part, and is discharged. trying to be
Then, the small amount of water adhering to the upper surface of the flange is forced toward the outer diameter side of the lower end of the slope, with the protrusion that slides in a pressing manner on the upper surface of the flange acting as a dam based on the spherical sliding of the joint outer. Therefore, the sliding surface of the protrusion on the upper surface of the flange is maintained in a state where water is always actively drained by utilizing the spherical sliding of the joint outer. Water accumulates here, and after the accumulated water dries, the dust contained in the water remains.As this process is repeated, the dust gradually accumulates, and this enters the sealing part, impairing the sealing function. This prevents water from becoming cloudy, maintains a stable sealing function at all times, and reliably prevents water from entering the ball sliding part beyond the sealing part over a long period of time. Even if the ball joint is installed in a location that is exposed to heavy rainwater, such as the sub-stay of a wiper that wipes automobile windows, it can always perform reliable spherical oscillation over a long period of time. It is.
図面は、本考案に係るボールジヨイントの防水
構造の一実施例を示すものであつて、第1図はパ
ンタグラフ式ワイパの正面図、第2図はワイパの
取付け状態を示す要部拡大側面図、第3図はボー
ルジヨイントの作用を説明する拡大縦断面図であ
る。
図中、1はワイパ、3はサブステー、8はボー
ルジヨイント、9は支軸、10はボール部、11
はジヨイントアウタ、11bは突条部、11cは
覆蓋部、12bは鍔部である。
The drawings show an embodiment of the waterproof structure of the ball joint according to the present invention, in which Fig. 1 is a front view of a pantograph wiper, and Fig. 2 is an enlarged side view of the main parts showing the wiper installed state. , FIG. 3 is an enlarged longitudinal sectional view illustrating the function of the ball joint. In the figure, 1 is a wiper, 3 is a substay, 8 is a ball joint, 9 is a spindle, 10 is a ball part, 11
11b is a joint outer, 11b is a protruding portion, 11c is a cover portion, and 12b is a flange portion.
Claims (1)
ル部に上方から球面摺動自在に外嵌されるジヨイ
ントアウタとを用いてなるボールジヨイントにお
いて、前記支軸には、外径方向に突出していて下
方からの水を下面で遮る鍔部が形成されたゴム質
状の防水体を嵌着する一方、前記ジヨイントアウ
タには、前記鍔部の外周縁よりも内径側上面に押
圧状に摺動接当して鍔部を外径側ほど低い傾斜姿
勢に弾性変形させてボール摺動部の封止をする下
向きの突条部と、該突条部よりも外径側で、かつ
鍔部外周縁よりも外側近傍に位置して前記傾斜姿
勢の鍔部外周縁位置よりも下方まで延長垂下さ
れ、鍔部外周縁部位を囲繞するよう覆つて横方か
らの水を遮る覆蓋部とを設けたことを特徴とする
ボールジヨイントの防水構造。 In a ball joint that uses a ball part formed at the upper end of a support shaft and a joint outer that is fitted onto the ball part from above in a spherical slidable manner, the support shaft includes a ball part that protrudes in the outer radial direction. A rubber-like waterproof body is fitted with a flange that blocks water from below on the bottom surface of the joint outer, and a rubber waterproof body is fitted onto the joint outer, and a rubber-like waterproof body is fitted onto the joint outer in a pressing manner on the upper surface on the inner diameter side of the outer periphery of the flange. A downwardly directed protrusion that seals the ball sliding part by abutting and elastically deforming the flange into a lower inclined position toward the outer diameter, and A cover part is provided which is located near the outside of the periphery, extends downward from the outer periphery of the flange in the tilted position, and covers the outer periphery of the flange to block water from lateral. A ball joint waterproof structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985134723U JPH0236972Y2 (en) | 1985-09-03 | 1985-09-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985134723U JPH0236972Y2 (en) | 1985-09-03 | 1985-09-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6241926U JPS6241926U (en) | 1987-03-13 |
JPH0236972Y2 true JPH0236972Y2 (en) | 1990-10-08 |
Family
ID=31036230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985134723U Expired JPH0236972Y2 (en) | 1985-09-03 | 1985-09-03 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0236972Y2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031373B2 (en) * | 1972-11-13 | 1975-10-09 | ||
JPS5481452A (en) * | 1977-12-12 | 1979-06-28 | Musashi Seimitsu Kogyo Kk | Boot seal |
JPS60136669A (en) * | 1983-12-23 | 1985-07-20 | Nippon Denso Co Ltd | Joint seal of wiper link apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031373U (en) * | 1973-07-19 | 1975-04-07 | ||
JPS5586160U (en) * | 1978-12-11 | 1980-06-13 |
-
1985
- 1985-09-03 JP JP1985134723U patent/JPH0236972Y2/ja not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031373B2 (en) * | 1972-11-13 | 1975-10-09 | ||
JPS5481452A (en) * | 1977-12-12 | 1979-06-28 | Musashi Seimitsu Kogyo Kk | Boot seal |
JPS60136669A (en) * | 1983-12-23 | 1985-07-20 | Nippon Denso Co Ltd | Joint seal of wiper link apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6241926U (en) | 1987-03-13 |
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