JP3960458B2 - Ball joint - Google Patents

Ball joint Download PDF

Info

Publication number
JP3960458B2
JP3960458B2 JP2001003175A JP2001003175A JP3960458B2 JP 3960458 B2 JP3960458 B2 JP 3960458B2 JP 2001003175 A JP2001003175 A JP 2001003175A JP 2001003175 A JP2001003175 A JP 2001003175A JP 3960458 B2 JP3960458 B2 JP 3960458B2
Authority
JP
Japan
Prior art keywords
bearing
housing
protrusion
inner peripheral
outer peripheral
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
Application number
JP2001003175A
Other languages
Japanese (ja)
Other versions
JP2002206518A5 (en
JP2002206518A (en
Inventor
裕典 古賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Musashi Seimitsu Industry Co Ltd
Original Assignee
Musashi Seimitsu Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Musashi Seimitsu Industry Co Ltd filed Critical Musashi Seimitsu Industry Co Ltd
Priority to JP2001003175A priority Critical patent/JP3960458B2/en
Publication of JP2002206518A publication Critical patent/JP2002206518A/en
Publication of JP2002206518A5 publication Critical patent/JP2002206518A5/ja
Application granted granted Critical
Publication of JP3960458B2 publication Critical patent/JP3960458B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Pivots And Pivotal Connections (AREA)

Description

【0001】
【産業上の利用分野】
本発明は、例えば自動車の懸架装置及び操舵装置に使用されるボールジョイントに関する。
【0002】
【従来の技術】
従来より、自動車の懸架装置及び操舵装置の連結部にはボールジョイントが頻繁に使用されてきた。このようなボールジョイントは、図10に示す如く、球状の球頭部104と該球頭部104から延出する柄部103とを有するボールスタッド102と、そのボールスタッド102の球頭部104を揺動回動自在に包持し、一端にベアリング開口部106を有する合成樹脂製のベアリング105と、そのベアリング105を内包し、一端にハウジング開口部113内周側からボールスタッド102の柄部103を突出させる略カップ状のハウジング112と、該ハウジング112のハウジング開口部113内周に配置される環状の抜け止めリング125と、ブーツ小開口部120がボールスタッド102の柄部103外周に、ブーツ大開口部121がリンク125外周に装着されるゴム状弾性体からなるブーツ119とを備えていた。
【0003】
【発明が解決しようとする課題】
このようなボールジョイント101は、ハウジング112内にベアリング105及びボールスタッド102の球頭部104を挿入後、抜け止めリング125でベアリング105のベアリング開口部106を内周側に折曲させた状態でハウジング112のハウジング開口部113をかしめ加工し、その後、ブーツ119を装着する工程を経てボールジョイント101を組付していた。ここで上記ボールジョイント101は、ボールスタッド102の揺動及び回動のトルクがベアリング105から受ける荷重に影響され、図11に示す如くボールスタッド102の球頭部104に内周面全面が当接するので球頭部104がベアリング105内周全面から荷重を受け、揺動及び回動のトルクが全体に高くなってしまうということがある。
【0004】
また、ボールジョイント101は、ボールスタッド102の球頭部104の揺動及び回動が滑らかに行われるように、ベアリング105内周面とボールスタッド102の球頭部104との間に潤滑剤が塗布されている。この潤滑剤はボールスタッド102の揺動に伴ってベアリング105のベアリング開口部106から外側へ流出しやすく、潤滑性が低下してしまうということがある。さらに、ボールスタッド102の球頭部104とベアリング105の内球面とがほぼ隙間なく密着しているため、潤滑剤が全周にいきわたるのが難しいということがある。
【0005】
よって本発明は以上の如き課題を解決し、揺動及び回動のトルクを低く設定でき、潤滑性の高いボールジョイントを提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明は以下の如き構成である。
【0007】
1. 球状の球頭部と球頭部から突出する柄部とよりなるボールスタッドと、ボールスタッドの球頭部を揺動回動自在に包持し一方にベアリング開口部を有するベアリングと、ベアリングを内包し一方にボールスタッドの柄部を突出させるハウジング開口部を有するハウジングとを備えるボールジョイントにおいて、ベアリングの外周面は複数の外周突条及び複数の外周凹部が形成されるとともに、ハウジングの内周面に複数の内周突条及び複数の内周凹部が形成され、ベアリングとハウジングとは外周突条と内周突条とが交差した状態で係合し、ベアリングの内周面には、外周突条と内周突条が係合した部分に球頭部と当接する大突部が形成されるとともに、外周突条と内周凹部が係合した部分、及び外周凹部と内周突条が係合した部分に大突部より突出量が少ない小突部が形成される
【0008】
2. ベアリングは外周面に軸方向に延びる複数の外周突条が形成され、ハウジングは内周面に周状の複数の内周突条が形成されている。
【0009】
3. ベアリングは外周面に周状に複数の外周突条が形成され、ハウジングは内周面に軸方向に延びる複数の内周突条が形成されている。
【0010】
4. ベアリングはベアリング開口部付近外周面に周状のベアリング突部が形成され、ベアリング突部はハウジングの内周面に全周にわたって当接する。
【0011】
【実施例】
以下、本発明の実施例を図1乃至図9に基づいて説明する。
【0012】
図1は本発明の実施例によるボールジョイント1を表す。このボールジョイント1は、球状の球頭部4と、球頭部4から延出する柄部3とからなるボールスタッド2と、ボールスタッド2の球頭部4を揺動回動自在に包持し、一端端部が開口するベアリング開口部6、他端が円弧状に閉じる底部7を有するベアリング5と、ベアリング5を内包し、一端にベアリング開口部6側端部が開口するハウジング開口部13を有するハウジング12とを備える。ハウジング12は、アルミ材よりなる外カップ12aと、強度を高めるために外カップ12a内周底部に配置される鉄鋼材よりなる内カップ12bとより構成される。そして、ハウジング12のハウジング開口部13内周には、段状の第一段部14と、第一段部14に連続し小径となる第二段部15が形成され、第二段部15には、ベアリング5の外周に形成したフランジ8が着座し、第二段部15には、ハウジング開口部13内周に配置される環状の抜け止めリング25の外周に形成した鍔部26が着座する。抜け止めリング25の内周は、所望するベアリング5のベアリング開口部6外周曲率と同一曲率の曲内面28を有し、その外周には鍔部26に連続し軸線方向に延びる立壁部27が形成される。そしてゴム状弾性体からなるブーツ19の、第二補強環23が内部に埋設されるブーツ大開口部21が抜け止めリング25の立壁部27に固定され、第一補強環22が内部に埋設され断面コの字状のフェルール24が装着されるブーツ小開口部20がボールスタッド2の柄部3外周に固定される。
【0013】
ここでベアリング5は、図3に示す如く、外周面にベアリング開口部6付近に周状のフランジ8とフランジ8より底部7側にフランジ8より小径の外径を有するベアリング突部11が形成されている。また、軸方向に底部7からベアリング突部11まで延びる外周突条9が複数形成されており、各外周突条9間に外周凹部10が形成されている。また、図4に示す如くハウジング12は、外カップ12aと内カップ12bとよりなり、その内周面にハウジング開口部13付近に突部18が形成されている。また、周突の内周突条16が複数形成され、各内周突条16間に内周凹部17が形成されている。
【0014】
次に上記ボールジョイント1の組付方法について説明する。
【0015】
まず図5に示す如く、予め外カップ12aの内周所定位置に内カップ12bを配置したハウジング12のハウジング開口部13側からベアリング5を挿入し、ベアリング5の底部7をハウジング12の内周面に、ベアリング5のフランジ8をハウジング12の第二段部15に着座させ、続いてベアリング5のベアリング開口部6側からボールスタッド2の球頭部4を挿入する。このときベアリング5のベアリング突部11とハウジング12のハウジング突部18は略同位置になるように配置される。次に図6に示す如く、ハウジング12のハウジング開口部13内周側に抜け止めリング25を挿入し、ベアリング5のベアリング開口部6を抜け止めリング25の曲内面28に倣って内周側に折曲させるとともに、抜け止めリング25の鍔部26をハウジング12の第一段部14に着座させ、この状態でハウジング12のハウジング開口部13をかしめ加工し、図7に示す如き予備組立体41を組付ける。
【0016】
そして最後に、ブーツ19のブーツ大開口部21が抜け止めリング25の立壁部27に、ブーツ小開口部20がボールスタッド2の柄部3外周に圧入されて、図1に示す如きボールジョイント1の組付けが完了する。
【0017】
よって上記ボールジョイント1は、ベアリング5の外周面に軸方向に底部7からベアリング突部11まで延びる外周突条9が複数形成され、各外周突条9間には外周凹部10が形成されており、またハウジング12の内周面に周状の内周突条16が複数形成され、各内周突条16間には内周凹部17が形成されているので、ハウジング開口部13をかしめ加工すると、図2の(ア)に示す如く、ベアリング5の外周突条9とハウジング12の内周突条16が係合した部分はベアリング5の内周に大突部30が形成されて、この大突部30はボールスタッド2の球頭部4と強く当接し、ベアリング5の外周突条9とハウジング12の内周凹部17とが係合した部分はベアリング5の内周面に大突部30よりも突出量が少なくボールスタッド2の球頭部4と当接しない小突部31が形成され、また、図2の(イ)に示す如く、ベアリング5の外周凹部10とハウジング12の内周突条16が係合した部分は小突部31が形成され、ベアリング5の外周凹部10とハウジング12の内周凹部17とが係合した部分はベアリング5の内周面に変化は与えられないので、ベアリング5の内周面とボールスタッド2の球頭部4とは接触せず、空間Sが発生する。また、ベアリング5の外周面にベアリング開口部6付近にベアリング突部11が形成され、ハウジング12の内周面にハウジング開口部13付近にハウジング突部18が形成され、ベアリング5のベアリング突部11とハウジング12のハウジング突部18が係合した部分はベアリング5の内周面に周状に突出する漏出防止部32が形成される。
【0018】
次に本発明の他の実施例を図8及び図9を基に説明する。
【0019】
図8に示されるベアリング55は外周面にベアリング開口部6付近に周状のベアリング突部11が形成されている。加えて、ベアリング突部11よりベアリング底部7側に周状に複数の外周突条59が形成され、各外周突条59間に外周凹部60が形成されている。また、図9に示されるハウジング62の内カップ62bは内周面にハウジング開口部13付近に周状のハウジング突部18が形成されている。加えて内周面にハウジングの底部からハウジング突部18まで延びる内周突条66が複数形成されており、各内周突条66間には内周凹部67が形成されている。
【0020】
上記の如きベアリング55とハウジング62を有するボールジョイント51は、ボールジョイント1と同様の工程で組付けられる。
【0021】
上記の如きボールジョイント51は、ハウジング開口部13をかしめ加工するとベアリング55の外周突条59とハウジング62の内周突条66が係合した部分はベアリング55の内周に大突部30が形成されて、この大突部30はボールスタッド2の球頭部4と強く当接し、ベアリング55の外周突条59とハウジング62の内周凹部67とが係合した部分はベアリング55の内周面に大突部30よりも突出量が少なく、ボールスタッド2の球頭部4と当接しない小突部31が形成され、また、ベアリング55の外周凹部60とハウジング62の内周突条66が係合した部分は小突部31が形成され、ベアリング55の外周凹部60とハウジング62の内周凹部67とが係合した部分はベアリング55の内周面に変化は与えられないので、ベアリング55の内周面とボールスタッド2の球頭部4とは接触せず、空間Sが発生する。また、ベアリング55の外周面にベアリング開口部6付近にベアリング突部11が形成され、ハウジング62の内周面にハウジング開口部13付近にハウジング突部18が形成され、ベアリング55のベアリング突部11とハウジング62のハウジング突部18が係合した部分はベアリング55の内周面に周状に突出する漏出防止部32が形成される。
【0022】
【発明の効果】
以上のように本発明のボールジョイントによれば、球状の球頭部と球頭部から突出する柄部とよりなるボールスタッドと、ボールスタッドの球頭部を揺動回動自在に包持し一方にベアリング開口部を有するベアリングと、ベアリングを内包し一方にボールスタッドの柄部を突出させるハウジング開口部を有するハウジングとを備えるボールジョイントにおいて、ベアリングの外周面は複数の外周突条及び複数の外周凹部が形成されるとともに、ハウジングの内周面に複数の内周突条及び複数の内周凹部が形成され、ベアリングとハウジングとは外周突条と内周突条とが交差した状態で係合し、ベアリングの内周面には、外周突条と内周突条が係合した部分に球頭部と当接する大突部が形成されるとともに、外周突条と内周凹部が係合した部分、及び外周凹部と内周突条が係合した部分に大突部より突出量が少ない小突部が形成されるので、ハウジングのハウジング開口部をかしめ加工すると、ベアリングの内周面にボールスタッドの球頭部に当接する部分と当接せずにボールスタッドの球頭部とベアリングの内周面との間に空間が発生する部分とが形成されるため、空間が潤滑剤溜りとなり、ボールスタッドの揺動及び回動に伴って潤滑剤が全体にいきわたりボールスタッドの球頭部がベアリングの内側で滑らかに揺動及び回動できる。また、ボールスタッドの球頭部とベアリングの内周面とが当接しない部分が形成されるのでボールスタッドの球頭部がベアリングの内周面から荷重を受ける面積が減少するため、揺動及び回動のトルクが高くなることを抑制できる。さらに、ベアリングの内周面のボールスタッドの球頭部に当接しない部分がバックアップすることができるで、ボールスタッドに大きな荷重がかかったときに負荷に対する耐荷重及び耐久性を向上できる。
【0023】
また、上記ボールジョイントで、ベアリングはベアリング開口部付近外周面に周状のベアリング突部が形成され、ベアリング突部はハウジングの内周面に全周にわたって当接すると、ベアリングのベアリング開口部付近の内周面に周状に突出する漏出防止部が形成されるので、ベアリング内周面とボールスタッドの球頭部との間が強く当接し、ベアリング内の潤滑剤が外へ流出するのを防ぐことができるため、ボールジョイントが滑らかに揺動及び回動することができる。
【図面の簡単な説明】
【図1】本発明の実施例によるボールジョイントを表す部分断面正面図である。
【図2】(ア)は、図1のA部拡大図、(イ)は図1のB部拡大図である。
【図3】本発明の実施例によるボールジョイントに使用されるベアリングを表す正面図である。
【図4】本発明の実施例によるボールジョイントに使用されるハウジングを表す断面正面図である。
【図5】本発明の実施例によるボールジョイントを組付する第一段階を表す部分断面正面図である。
【図6】本発明の実施例によるボールジョイントを組付する第二段階を表す部分断面正面図である。
【図7】本発明の実施例によるボールジョイントの組付途中の予備組付体を表す部分断面正面図である。
【図8】本発明の他の実施例によるボールジョイントに使用されるベアリングを表す正面図である。
【図9】本発明の他の実施例によるボールジョイントに使用されるベアリングを表す正面図である。
【図10】従来のボールジョイントを表す部分断面正面図である。
【図11】図10のC部拡大図である。
【符号の説明】
2 ボールスタッド
3 柄部
4 球頭部
5 ベアリング
6 ベアリング開口部
9 外周突条
12 ハウジング
16 内周突条
59 外周突条
66 内周突条
[0001]
[Industrial application fields]
The present invention relates to a ball joint used in, for example, a suspension device and a steering device of an automobile.
[0002]
[Prior art]
Conventionally, ball joints have been frequently used for connecting parts of automobile suspensions and steering devices. As shown in FIG. 10, such a ball joint includes a ball stud 102 having a spherical ball head 104 and a handle 103 extending from the ball head 104, and a ball head 104 of the ball stud 102. A synthetic resin bearing 105 having a bearing opening 106 at one end, and a handle 103 of the ball stud 102 from the inner peripheral side of the housing opening 113 at one end. A substantially cup-shaped housing 112 that protrudes from the housing 112, an annular retaining ring 125 disposed on the inner periphery of the housing opening 113 of the housing 112, and a small boot opening 120 on the outer periphery of the handle 103 of the ball stud 102. The large opening 121 includes a boot 119 made of a rubber-like elastic body attached to the outer periphery of the link 125.
[0003]
[Problems to be solved by the invention]
In such a ball joint 101, after the bearing 105 and the ball head 104 of the ball stud 102 are inserted into the housing 112, the bearing opening 106 of the bearing 105 is bent to the inner peripheral side by the retaining ring 125. The ball joint 101 is assembled through a process in which the housing opening 113 of the housing 112 is caulked and then the boot 119 is attached. Here, the ball joint 101 is affected by the load that the swing and rotation torque of the ball stud 102 receives from the bearing 105, and the entire inner peripheral surface abuts on the ball head 104 of the ball stud 102 as shown in FIG. As a result, the ball head 104 receives a load from the entire inner surface of the bearing 105, and the swinging and turning torque may increase as a whole.
[0004]
Further, the ball joint 101 has a lubricant between the inner peripheral surface of the bearing 105 and the ball head 104 of the ball stud 102 so that the ball head 104 of the ball stud 102 can smoothly swing and rotate. It has been applied. As the ball stud 102 swings, the lubricant tends to flow out from the bearing opening 106 of the bearing 105 and the lubricity may be lowered. Furthermore, since the ball head 104 of the ball stud 102 and the inner spherical surface of the bearing 105 are in close contact with each other with almost no gap, it may be difficult for the lubricant to spread all around.
[0005]
Accordingly, an object of the present invention is to solve the above-described problems, and to provide a ball joint having high lubricity, which can set a swinging and rotating torque low.
[0006]
[Means for Solving the Problems]
The present invention has the following configuration.
[0007]
1. A ball stud formed of a spherical ball head and a handle protruding from the ball head, a bearing having a ball head of the ball stud swingably pivoted and having a bearing opening on one side, and a bearing included On the other hand, in a ball joint including a housing having a housing opening for projecting the handle portion of the ball stud, the outer peripheral surface of the bearing is formed with a plurality of outer peripheral protrusions and a plurality of outer peripheral recesses , and the inner peripheral surface of the housing a plurality of inner circumferential ridges and a plurality of inner circumferential recess is formed in, the bearing and the housing engage in a state where the inner circumferential ridge and the outer ridge crossed, on the inner peripheral surface of the bearing, the outer peripheral end collision A large protrusion that contacts the ball head is formed at a portion where the strip and the inner peripheral protrusion are engaged, and a portion where the outer peripheral protrusion and the inner peripheral recess are engaged, and the outer peripheral recess and the inner peripheral protrusion are engaged. Large protrusion on the joined part Ri protrusion amount is small small protuberance is formed.
[0008]
2. The bearing has a plurality of outer peripheral ridges extending in the axial direction on the outer peripheral surface, and the housing has a plurality of peripheral inner peripheral ridges formed on the inner peripheral surface.
[0009]
3. The bearing has a plurality of outer peripheral ridges formed on the outer peripheral surface in a circumferential shape, and the housing has a plurality of inner peripheral ridges extending in the axial direction on the inner peripheral surface.
[0010]
4). The bearing has a circumferential bearing protrusion formed on the outer peripheral surface near the bearing opening, and the bearing protrusion contacts the inner peripheral surface of the housing over the entire circumference.
[0011]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
[0012]
FIG. 1 shows a ball joint 1 according to an embodiment of the present invention. The ball joint 1 includes a ball stud 2 including a spherical ball head 4 and a handle 3 extending from the ball head 4, and a ball head 2 of the ball stud 2 so as to swing and rotate. A bearing opening 6 having one end opened, a bearing 5 having a bottom 7 closed at the other end in an arc shape, and a housing opening 13 containing the bearing 5 and having an end on the bearing opening 6 side opened at one end. And a housing 12. The housing 12 includes an outer cup 12a made of an aluminum material, and an inner cup 12b made of a steel material disposed on the inner peripheral bottom of the outer cup 12a in order to increase the strength. In the inner periphery of the housing opening 13 of the housing 12, a stepped first step portion 14 and a second step portion 15 that is continuous with the first step portion 14 and has a small diameter are formed. The flange 8 formed on the outer periphery of the bearing 5 is seated, and the flange portion 26 formed on the outer periphery of the annular retaining ring 25 disposed on the inner periphery of the housing opening 13 is seated on the second step portion 15. . The inner periphery of the retaining ring 25 has a curved inner surface 28 having the same curvature as the outer peripheral curvature of the bearing opening 6 of the desired bearing 5, and a standing wall portion 27 extending in the axial direction is formed on the outer periphery of the inner periphery. Is done. The boot 19 made of a rubber-like elastic body has a large boot opening 21 in which the second reinforcing ring 23 is embedded, and is fixed to the standing wall 27 of the retaining ring 25, and the first reinforcing ring 22 is embedded therein. A small boot opening 20 to which a ferrule 24 having a U-shaped cross section is attached is fixed to the outer periphery of the handle 3 of the ball stud 2.
[0013]
Here, as shown in FIG. 3, the bearing 5 has a circumferential flange 8 on the outer peripheral surface in the vicinity of the bearing opening 6 and a bearing projection 11 having an outer diameter smaller than the flange 8 on the bottom 7 side of the flange 8. ing. A plurality of outer peripheral ridges 9 extending from the bottom 7 to the bearing protrusion 11 are formed in the axial direction, and an outer peripheral recess 10 is formed between the outer peripheral ridges 9. As shown in FIG. 4, the housing 12 includes an outer cup 12 a and an inner cup 12 b, and a protrusion 18 is formed in the vicinity of the housing opening 13 on the inner peripheral surface thereof. Further, a plurality of inner peripheral ridges 16 are formed, and an inner peripheral recess 17 is formed between the inner peripheral ridges 16.
[0014]
Next, a method for assembling the ball joint 1 will be described.
[0015]
First, as shown in FIG. 5, the bearing 5 is inserted from the housing opening 13 side of the housing 12 in which the inner cup 12 b is arranged in advance at a predetermined position on the inner periphery of the outer cup 12 a, and the bottom 7 of the bearing 5 is connected to the inner peripheral surface of the housing 12. Next, the flange 8 of the bearing 5 is seated on the second step portion 15 of the housing 12, and then the ball head 4 of the ball stud 2 is inserted from the bearing opening 6 side of the bearing 5. At this time, the bearing protrusion 11 of the bearing 5 and the housing protrusion 18 of the housing 12 are arranged so as to be substantially in the same position. Next, as shown in FIG. 6, a retaining ring 25 is inserted on the inner peripheral side of the housing opening 13 of the housing 12, and the bearing opening 6 of the bearing 5 is moved to the inner peripheral side along the curved inner surface 28 of the retaining ring 25. In addition to bending, the flange portion 26 of the retaining ring 25 is seated on the first step portion 14 of the housing 12, and in this state, the housing opening 13 of the housing 12 is caulked to form a preliminary assembly 41 as shown in FIG. Assemble.
[0016]
Finally, the large boot portion 21 of the boot 19 is press-fitted into the standing wall portion 27 of the retaining ring 25 and the small boot portion 20 is press-fitted into the outer periphery of the handle portion 3 of the ball stud 2 so that the ball joint 1 as shown in FIG. Assembly is completed.
[0017]
Accordingly, the ball joint 1 has a plurality of outer peripheral ridges 9 extending in the axial direction from the bottom 7 to the bearing protrusion 11 on the outer peripheral surface of the bearing 5, and an outer peripheral recess 10 is formed between the outer peripheral protrusions 9. In addition, since a plurality of circumferential inner circumferential ridges 16 are formed on the inner circumferential surface of the housing 12 and inner circumferential recesses 17 are formed between the inner circumferential ridges 16, the housing opening 13 is caulked. As shown in FIG. 2A, a large protrusion 30 is formed on the inner periphery of the bearing 5 at the portion where the outer peripheral protrusion 9 of the bearing 5 and the inner peripheral protrusion 16 of the housing 12 are engaged. The protrusion 30 is in strong contact with the ball head 4 of the ball stud 2, and the portion where the outer peripheral protrusion 9 of the bearing 5 and the inner peripheral recess 17 of the housing 12 are engaged is the large protrusion 30 on the inner peripheral surface of the bearing 5. The amount of protrusion is less than the ball stud 2 A small protrusion 31 that does not contact the head 4 is formed, and as shown in FIG. 2A, the portion where the outer peripheral recess 10 of the bearing 5 and the inner peripheral protrusion 16 of the housing 12 are engaged is a small protrusion. Since the portion 31 is formed and the outer peripheral concave portion 10 of the bearing 5 and the inner peripheral concave portion 17 of the housing 12 are engaged with each other, no change is given to the inner peripheral surface of the bearing 5. The space S is generated without contact with the second spherical head 4. A bearing protrusion 11 is formed on the outer peripheral surface of the bearing 5 in the vicinity of the bearing opening 6, a housing protrusion 18 is formed on the inner peripheral surface of the housing 12 in the vicinity of the housing opening 13, and the bearing protrusion 11 of the bearing 5. The portion of the housing 12 engaged with the housing protrusion 18 is formed with a leakage preventing portion 32 that protrudes circumferentially on the inner peripheral surface of the bearing 5.
[0018]
Next, another embodiment of the present invention will be described with reference to FIGS.
[0019]
The bearing 55 shown in FIG. 8 has a circumferential bearing protrusion 11 formed in the vicinity of the bearing opening 6 on the outer peripheral surface. In addition, a plurality of outer peripheral protrusions 59 are formed in a circumferential shape from the bearing protrusion 11 toward the bearing bottom 7, and an outer peripheral recess 60 is formed between the outer peripheral protrusions 59. Further, the inner cup 62b of the housing 62 shown in FIG. 9 has a circumferential housing projection 18 formed on the inner peripheral surface in the vicinity of the housing opening 13. In addition, a plurality of inner peripheral ridges 66 extending from the bottom of the housing to the housing protrusion 18 are formed on the inner peripheral surface, and an inner peripheral recess 67 is formed between the inner peripheral ridges 66.
[0020]
The ball joint 51 having the bearing 55 and the housing 62 as described above is assembled in the same process as the ball joint 1.
[0021]
In the ball joint 51 as described above, when the housing opening 13 is caulked, the large protrusion 30 is formed on the inner periphery of the bearing 55 at the portion where the outer peripheral protrusion 59 of the bearing 55 and the inner peripheral protrusion 66 of the housing 62 are engaged. The large protrusion 30 strongly contacts the ball head 4 of the ball stud 2, and the portion where the outer peripheral protrusion 59 of the bearing 55 engages with the inner peripheral recess 67 of the housing 62 is the inner peripheral surface of the bearing 55. A small protrusion 31 is formed which has a smaller protrusion than the large protrusion 30 and does not contact the ball head 4 of the ball stud 2, and an outer peripheral recess 60 of the bearing 55 and an inner peripheral protrusion 66 of the housing 62. Since the small protrusion 31 is formed in the engaged portion, and the inner peripheral surface of the bearing 55 is not changed in the portion where the outer peripheral recess 60 of the bearing 55 and the inner peripheral recess 67 of the housing 62 are engaged, The inner peripheral surface and the spherical head 4 of the ball stud 2 in the bearings 55 do not contact, the space S is generated. A bearing protrusion 11 is formed on the outer peripheral surface of the bearing 55 in the vicinity of the bearing opening 6, a housing protrusion 18 is formed on the inner peripheral surface of the housing 62 in the vicinity of the housing opening 13, and the bearing protrusion 11 of the bearing 55 is formed. The portion of the housing 62 where the housing protrusion 18 is engaged is formed with a leakage preventing portion 32 that protrudes circumferentially on the inner peripheral surface of the bearing 55.
[0022]
【The invention's effect】
As described above, according to the ball joint of the present invention, the ball stud including the spherical ball head and the handle protruding from the ball head, and the ball head of the ball stud are swingably pivoted. In a ball joint including a bearing having a bearing opening on one side and a housing having a housing opening that encloses the bearing and protrudes a handle portion of the ball stud on one side, the outer peripheral surface of the bearing has a plurality of outer peripheral ridges and a plurality of outer protrusions . An outer peripheral recess is formed, and a plurality of inner peripheral protrusions and a plurality of inner peripheral recesses are formed on the inner peripheral surface of the housing, and the bearing and the housing are engaged with the outer peripheral protrusion and the inner peripheral protrusion intersecting each other. if then, on the inner peripheral surface of the bearing, together with the spherical head portion which abuts against the large protuberances are formed in a portion outer periphery protruding and the inner circumferential ridge is engaged, the outer periphery protruding an inner peripheral recess engagement Part And since the outer circumferential recess and the inner peripheral ridge projecting amount than the large protuberances on the portion engaged less small protuberances are formed, when caulking housing opening of the housing, the ball stud on the inner peripheral surface of the bearing Since the part that contacts the ball head and the part that generates a space between the ball head of the ball stud and the inner peripheral surface of the bearing is formed without contact, the space becomes a lubricant reservoir, and the ball stud With the swinging and turning of the lubricant, the lubricant spreads over the entire surface, and the ball head of the ball stud can smoothly swing and turn inside the bearing. Further, since the portion where the ball stud ball head and the inner peripheral surface of the bearing do not contact is formed, the area where the ball stud ball head receives the load from the inner peripheral surface of the bearing is reduced. It can suppress that the torque of rotation becomes high. Furthermore, the portion of the inner peripheral surface of the bearing that does not contact the ball head of the ball stud can be backed up, and the load resistance and durability against the load can be improved when a large load is applied to the ball stud.
[0023]
In the ball joint, the bearing has a circumferential bearing protrusion formed on the outer peripheral surface in the vicinity of the bearing opening. When the bearing protrusion is in contact with the inner peripheral surface of the housing over the entire circumference, Since the leakage prevention part that protrudes in a circumferential shape is formed on the inner peripheral surface, the bearing inner peripheral surface and the ball head of the ball stud are in strong contact with each other to prevent the lubricant in the bearing from flowing out. Therefore, the ball joint can swing and rotate smoothly.
[Brief description of the drawings]
FIG. 1 is a partial sectional front view showing a ball joint according to an embodiment of the present invention.
2A is an enlarged view of part A in FIG. 1, and FIG. 2B is an enlarged view of part B in FIG.
FIG. 3 is a front view showing a bearing used in a ball joint according to an embodiment of the present invention.
FIG. 4 is a cross-sectional front view showing a housing used for a ball joint according to an embodiment of the present invention.
FIG. 5 is a partial cross-sectional front view showing a first stage of assembling a ball joint according to an embodiment of the present invention.
FIG. 6 is a partial cross-sectional front view showing a second stage of assembling the ball joint according to the embodiment of the present invention.
FIG. 7 is a partial cross-sectional front view showing a preliminary assembly during the assembly of the ball joint according to the embodiment of the present invention.
FIG. 8 is a front view showing a bearing used in a ball joint according to another embodiment of the present invention.
FIG. 9 is a front view showing a bearing used in a ball joint according to another embodiment of the present invention.
FIG. 10 is a partial sectional front view showing a conventional ball joint.
11 is an enlarged view of a portion C in FIG.
[Explanation of symbols]
2 Ball stud 3 Handle 4 Ball head 5 Bearing 6 Bearing opening 9 Peripheral protrusion
12 housing 16 inner peripheral protrusion 59 outer peripheral protrusion 66 inner peripheral protrusion

Claims (4)

球状の球頭部(4)と該球頭部(4)から突出する柄部(3)とよりなるボールスタッド(2)と、該ボールスタッド(2)の球頭部(4)を揺動回動自在に包持し一方にベアリング開口部(6)を有するベアリング(5)と、該ベアリング(5)を内包し一方に前記ボールスタッド(2)の柄部(3)を突出させるハウジング開口部(13)を有するハウジング(12)とを備えるボールジョイントにおいて、前記ベアリング(5)の外周面は複数の外周突条(9)及び複数の外周凹部(10)が形成されるとともに、前記ハウジング(12)の内周面に複数の内周突条(16)及び複数の内周凹部(17)が形成され、該ベアリング(5)と前記ハウジング(12)とは外周突条(9)と内周突条(16)とが交差した状態で係合し、ベアリング(5)の内周面には、外周突条(9)と内周突条(16)が係合した部分に前記球頭部(4)と当接する大突部(30)が形成されるとともに、外周突条(9)と内周凹部(17)が係合した部分、及び外周凹部(10)と内周突条(16)が係合した部分に該大突部(30)より突出量が少ない小突部(31)が形成されることを特徴とするボールジョイント。A ball stud (2) composed of a spherical ball head (4) and a handle (3) protruding from the ball head (4), and the ball head (4) of the ball stud (2) are swung. A bearing (5) having a bearing opening (6) on one side and being rotatably supported, and a housing opening containing the bearing (5) and projecting the handle (3) of the ball stud (2) on one side A ball joint including a housing (12) having a portion (13), wherein an outer peripheral surface of the bearing (5 ) is formed with a plurality of outer peripheral protrusions (9) and a plurality of outer peripheral recesses (10) , and the housing A plurality of inner peripheral ridges (16) and a plurality of inner peripheral recesses (17) are formed on the inner peripheral surface of (12), and the bearing (5) and the housing (12) are formed as outer peripheral ridges (9). an inner peripheral ridge (16) is engaged on and intersecting, base On the inner peripheral surface of the ring (5), there is formed a large protrusion (30) that comes into contact with the ball head (4) at a portion where the outer peripheral protrusion (9) and the inner peripheral protrusion (16) are engaged. In addition, the large protrusion (30) is connected to the portion where the outer peripheral protrusion (9) and the inner peripheral recess (17) are engaged, and the portion where the outer peripheral recess (10) and the inner peripheral protrusion (16) are engaged. A ball joint characterized in that a small protrusion (31) with a small amount of protrusion is formed . 前記ベアリング(5)は外周面に軸方向に延びる複数の外周突条(9)が形成され、前記ハウジング(12)は内周面に周状の複数の内周突条(16)が形成されていることを特徴とする請求項1記載のボールジョイント。  The bearing (5) has a plurality of outer peripheral ridges (9) extending in the axial direction on the outer peripheral surface, and the housing (12) has a plurality of circumferential inner ridges (16) formed on the inner peripheral surface. The ball joint according to claim 1, wherein: 前記ベアリング(5)は外周面に周状に複数の外周突条(59)が形成され、前記ハウジング(12)は内周面に軸方向に延びる複数の内周突条(66)が形成されていることを特徴とする請求項1記載のボールジョイント。  The bearing (5) is formed with a plurality of outer peripheral ridges (59) on the outer peripheral surface in a circumferential shape, and the housing (12) is formed with a plurality of inner peripheral ridges (66) extending in the axial direction on the inner peripheral surface. The ball joint according to claim 1, wherein: 前記ベアリング(5)はベアリング開口部(6)付近外周面に周状のベアリング突部(11)が形成され、該ベアリング突部(11)は前記ハウジング(12)の内周面に全周にわたって当接することを特徴とする請求項1乃至請求項3記載のボールジョイント。  The bearing (5) has a circumferential bearing protrusion (11) formed on the outer peripheral surface in the vicinity of the bearing opening (6), and the bearing protrusion (11) extends over the entire inner periphery of the housing (12). 4. The ball joint according to claim 1, wherein the ball joint abuts against the ball joint.
JP2001003175A 2001-01-11 2001-01-11 Ball joint Expired - Fee Related JP3960458B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001003175A JP3960458B2 (en) 2001-01-11 2001-01-11 Ball joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001003175A JP3960458B2 (en) 2001-01-11 2001-01-11 Ball joint

Publications (3)

Publication Number Publication Date
JP2002206518A JP2002206518A (en) 2002-07-26
JP2002206518A5 JP2002206518A5 (en) 2005-02-03
JP3960458B2 true JP3960458B2 (en) 2007-08-15

Family

ID=18871564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001003175A Expired - Fee Related JP3960458B2 (en) 2001-01-11 2001-01-11 Ball joint

Country Status (1)

Country Link
JP (1) JP3960458B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101262625B1 (en) * 2012-10-17 2013-05-08 군산대학교산학협력단 Ball joint having separated seat for vehicle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005034210B4 (en) * 2005-07-19 2008-04-10 Zf Friedrichshafen Ag Method for producing a ball joint and joint produced thereafter
US7644500B2 (en) * 2006-01-17 2010-01-12 Federal-Mogul World Wide, Inc. Method of setting the pre-load for a ball socket joint
KR100903962B1 (en) 2008-11-21 2009-06-25 주식회사 센트랄 Ball seat manufacturing method
JP2012092865A (en) * 2010-10-25 2012-05-17 Somic Ishikawa Inc Bearing seat of ball joint and ball joint
JP6282300B2 (en) * 2016-03-14 2018-02-21 日本発條株式会社 Ball joint and stabilizer link using the same
KR20220101514A (en) * 2021-01-11 2022-07-19 주식회사 일진 Ball joint and manufacturing method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101262625B1 (en) * 2012-10-17 2013-05-08 군산대학교산학협력단 Ball joint having separated seat for vehicle

Also Published As

Publication number Publication date
JP2002206518A (en) 2002-07-26

Similar Documents

Publication Publication Date Title
JP4097118B2 (en) Ball joint
JP2601387Y2 (en) Ball joint
US20030156896A1 (en) Ball joint
JP3960458B2 (en) Ball joint
US6866441B2 (en) Ball joint
WO2003056194A1 (en) Ball joint
JP3425756B2 (en) Dust cover
US11466727B2 (en) Ball socket assembly, dust boot therefor and method of construction thereof
US20030156894A1 (en) Ball joint
JP4516882B2 (en) Connection structure of ball joint and arm
JP4404307B2 (en) Ball joint
JP3973347B2 (en) Connection structure of ball joint and arm
JP4049518B2 (en) Ball joint
JP2001323923A (en) Ball joint
JP4462995B2 (en) Ball joint
CN111868396A (en) Improved socket assembly and method of making same
JP2590378Y2 (en) Dust seal for joint structures capable of swinging or spherical motion
JP4069269B2 (en) Ball joint
JP2001304239A (en) Ball joint
JP2001116037A (en) Ball joint
JP5473681B2 (en) Ball joint manufacturing method
JP3150577B2 (en) Ball joint
JPH0625672U (en) Ball valve seal ring
JP2004044651A (en) Connecting structure of ball joint and arm
JPH0629534Y2 (en) Spherical sliding bush

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040227

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040227

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20060919

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20060922

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061120

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070510

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070510

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110525

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130525

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees