JP2001241428A - Ball joint - Google Patents

Ball joint

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Publication number
JP2001241428A
JP2001241428A JP2000052730A JP2000052730A JP2001241428A JP 2001241428 A JP2001241428 A JP 2001241428A JP 2000052730 A JP2000052730 A JP 2000052730A JP 2000052730 A JP2000052730 A JP 2000052730A JP 2001241428 A JP2001241428 A JP 2001241428A
Authority
JP
Japan
Prior art keywords
opening
ball
bearing
housing
ball stud
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.)
Granted
Application number
JP2000052730A
Other languages
Japanese (ja)
Other versions
JP3877265B2 (en
Inventor
Akira Nemoto
明 根本
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 JP2000052730A priority Critical patent/JP3877265B2/en
Publication of JP2001241428A publication Critical patent/JP2001241428A/en
Application granted granted Critical
Publication of JP3877265B2 publication Critical patent/JP3877265B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a ball joint easily manufacturable, capable of giving a constant preload, and suppressing heightening of the torque. SOLUTION: The ball joint is composed of a ball stud consisting of a spherical head and a shank protruding from the head, a bearing having opening on one side and embracing the head of the ball stud in such a way as capable of swinging and rotating, and a housing accommodating the bearing and having an opening on one side for allowing the shank of the ball stud to protrude, wherein the bearing includes an open side receptacle continued from the opening, a circumferential stationary part continued from the open side receptacle to the counter-opening side and having an outside diameter some greater than the housing inside diameter, a bore side receptacle located inside of the stationary part and a thin wall part coupling the bore side receptacle with the stationary part and bearing the head of the ball stud, and the open side receptacle is equipped with a plurality of projections having an outside diameter some greater than the housing inside diameter and extending axially at the periphery.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、例えば自動車の懸架装
置等の連結部に使用されるボールジョイントに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball joint used for a connecting portion of, for example, an automobile suspension system.

【0002】[0002]

【従来の技術】従来から自動車の懸架装置等に使用され
るボールジョイントには、図6に示されるようなものが
ある。このようなボールジョイント101は、球状の球
頭部104と球頭部104から突出する柄部103とを
有するボールスタッド102と、ボールスタッド102
の球頭部104を揺動回動自在に包持し、一端に開口1
06を有するベアリング105と、ベアリング105を
内包し、一端にボールスタッド102の柄部103を突
出させる小開口114、他端に大開口115を有するハ
ウジング113と、ハウジング113の大開口115内
周にかしめ固定される閉止板116とから構成されてい
た。
2. Description of the Related Art Conventionally, there is a ball joint as shown in FIG. 6 used for a suspension system of an automobile or the like. Such a ball joint 101 includes a ball stud 102 having a spherical ball head 104 and a handle 103 projecting from the ball head 104, and a ball stud 102.
The ball head 104 is swingably rotatable and has an opening 1 at one end.
06, a housing 113 including the bearing 105, and having a small opening 114 at one end for projecting the handle 103 of the ball stud 102 and a large opening 115 at the other end. And a closing plate 116 fixed by caulking.

【0003】[0003]

【発明が解決しようとする課題】上記の如きボールジョ
イント101は、ベアリング105をハウジング113
内に圧入して固定する構造であるため、ベアリング10
5の外径がハウジング113の内径よりやや大径に形成
されている。このベアリング105がハウジング113
内に圧入されるとボールスタッド102の球頭部104
に締付力がかかり、ボールスタッド102の球頭部10
4に予圧が付与される。このとき、ベアリング105及
びハウジング113に寸法公差内で誤差が発生すると、
ボールスタッド102の球頭部104に付与される予圧
にバラツキが生じる。このバラツキを抑制するため、各
部品を高い寸法精度で製造することも考えられるが、高
い寸法精度を維持して各部品を製造することは非常に困
難であった。
In the ball joint 101 as described above, the bearing 105 is connected to the housing 113.
The bearing 10 is press-fitted into the inside and fixed.
The outer diameter of 5 is slightly larger than the inner diameter of the housing 113. This bearing 105 is the housing 113
When pressed into the ball head 104 of the ball stud 102
To the ball head 10 of the ball stud 102.
4 is pre-loaded. At this time, if an error occurs in the bearing 105 and the housing 113 within the dimensional tolerance,
The preload applied to the ball head 104 of the ball stud 102 varies. In order to suppress this variation, it is conceivable to manufacture each component with high dimensional accuracy, but it has been extremely difficult to manufacture each component while maintaining high dimensional accuracy.

【0004】また、ベアリング105外径はハウジング
113内径よりやや大径に形成されており、ベアリング
105がハウジング113内に圧入されているので、ボ
ールスタッド102の球頭部104にベアリング105
全周から締付力がかかるため予圧が高くなり、トルクが
高くなってしまうということがあった。
The outer diameter of the bearing 105 is slightly larger than the inner diameter of the housing 113, and the bearing 105 is press-fitted into the housing 113.
Since the tightening force is applied from all around, the preload increases, and the torque may increase.

【0005】従って本発明は上記の如き課題を解決し、
製造が容易で、一定の予圧を付与することができ、加え
てトルクが高くなるのを抑制することができるボールジ
ョイントを提供することを目的とする。
Accordingly, the present invention has solved the above-mentioned problems,
An object of the present invention is to provide a ball joint that can be easily manufactured, can apply a predetermined preload, and can suppress an increase in torque.

【0006】[0006]

【課題を解決するための手段】本発明の構成は以下の通
りである。
The configuration of the present invention is as follows.

【0007】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開口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
を突出させる開口を有するハウジングとよりなるボール
ジョイントにおいて、ベアリングは、開口から連続する
開口側受部と、開口側受部から反開口側へ連続しハウジ
ング内径よりやや大径の外径を有する周状の固定部と、
固定部より内径側に位置する内径側受部と、内径側受部
と固定部とを連結し、ボールスタッドの球頭部を支承す
る薄肉部とを有し、開口側受部にはハウジング内径より
やや大径の外径を有し、その外周には軸線方向に延びる
突部が複数形成されている。
[0007] A ball stud having a spherical ball head and a handle protruding from the ball head, a bearing having a ball head of the ball stud swingably rotatable and having an opening on one side, In a ball joint including a housing having an opening for projecting a handle portion of a ball stud on one side, a bearing includes an opening-side receiving portion continuous from the opening, and a housing inner diameter extending from the opening-side receiving portion to the opposite opening side. A circumferential fixing portion having a slightly larger outer diameter,
An inner diameter side receiving portion located on the inner diameter side from the fixed portion, a thin portion connecting the inner diameter side receiving portion and the fixed portion, and supporting a ball head of the ball stud, and an opening inner side receiving portion has a housing inner diameter. It has a slightly larger outer diameter, and a plurality of protrusions extending in the axial direction are formed on the outer periphery thereof.

【0008】[0008]

【実施例】以下、本発明の実施例を図1乃至図5に基づ
いて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

【0009】図1に示されるのは本発明の実施例による
ボールジョイント1である。このボールジョイント1
は、球状の球頭部4と球頭部4から突出する柄部3とよ
り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、一端に開口6を有するベア
リング5と、ベアリング5を内包し、一端にボールスタ
ッド2の柄部3を突出させる小開口14、他端に小開口
14より大径の大開口15を有し小開口14付近外周に
周状の凹部22が形成されたハウジング13と、ハウジ
ング13の大開口15内周にかしめ固定される閉止板1
6と、断面略L字状のL字環20が埋設された小開口1
8がボールスタッド2の柄部3外周に、外周にサークリ
ップ21が装着された大開口19がハウジング13の凹
部22に各々装着された弾性部材製のダストカバー17
とよりなる。
FIG. 1 shows a ball joint 1 according to an embodiment of the present invention. This ball joint 1
Is a ball stud 2 having a spherical ball head 4 and a handle 3 projecting from the ball head 4, and a ball head 4 of the ball stud 2 which is swingably rotatable and has an opening 6 at one end. And a small opening 14 that encloses the bearing 5 and protrudes the handle 3 of the ball stud 2 at one end, and a large opening 15 having a diameter larger than the small opening 14 at the other end. A housing 13 having a circumferential recess 22 formed therein, and a closing plate 1 caulked and fixed to the inner periphery of the large opening 15 of the housing 13
6 and a small opening 1 in which an L-shaped ring 20 having a substantially L-shaped cross section is embedded.
8 is a dust cover 17 made of an elastic member, which is mounted on the outer periphery of the handle 3 of the ball stud 2 and a large opening 19 with a circlip 21 mounted on the outer circumference of the recess 22 of the housing 13.
And

【0010】上記ベアリング5は、図2及び図3に示さ
れる如く、開口6から反開口側に延びる複数のスリット
9が形成され、その各スリット9間外周にハウジング1
3内径よりやや大径の外径を有し軸線方向に延びる複数
の突部8が間隔をおいて形成される開口側受部7と、こ
の開口側受部7から反開口側へ連続しハウジング13内
径よりやや大径の外径を有する周状の固定部10と、固
定部10より内径側に位置する内径側受部12と、固定
部10と内径側受部12とを連結し、ボールスタッド2
の球頭部4と略同一の曲率の内球面を有し、ボールスタ
ッド2の球頭部4を支承する薄肉部11とよりなる。こ
の固定部10、内径側受部12及び薄肉部11とにより
空間Sが形成される。
As shown in FIGS. 2 and 3, the bearing 5 has a plurality of slits 9 extending from the opening 6 to the opposite side of the opening.
A plurality of projections 8 having an outer diameter slightly larger than the inner diameter 3 and extending in the axial direction are formed at intervals, and an opening-side receiving portion 7 is formed. 13, a peripheral fixing portion 10 having an outer diameter slightly larger than the inner diameter, an inner diameter side receiving portion 12 located on the inner side of the fixing portion 10, and a connection between the fixing portion 10 and the inner diameter side receiving portion 12; Stud 2
The ball stud 2 has an inner spherical surface having substantially the same curvature as that of the ball head 4 and has a thin portion 11 that supports the ball head 4 of the ball stud 2. A space S is formed by the fixing portion 10, the inner diameter side receiving portion 12, and the thin portion 11.

【0011】続いて上記ボールジョイント1の製造方法
を図4及び図5を基に説明する。
Next, a method of manufacturing the ball joint 1 will be described with reference to FIGS.

【0012】まず図4に示す如くボールスタッド2の球
頭部4を、ベアリング5の開口6からベアリング5内へ
挿入する。次に図5に示す如くベアリング5が球頭部4
に嵌装されたボールスタッド2をハウジング13の大開
口15からハウジング13内へ圧入し、ベアリング5の
開口6側端部をハウジング13の小開口14内周側端部
に当接させる。続いて閉止板16をハウジング13大開
口15内に圧入し、ハウジング13大開口15端部をか
しめ固定する。そして最後に図1に示す如くダストカバ
ー17の小開口18をボールスタッド2の柄部3外周
に、大開口19をハウジング13の周状凹部22に各々
装着して、ボールジョイント1が完成する。
First, the ball head 4 of the ball stud 2 is inserted into the bearing 5 from the opening 6 of the bearing 5 as shown in FIG. Next, as shown in FIG.
The ball stud 2 fitted into the housing 13 is pressed into the housing 13 from the large opening 15 of the housing 13, and the end of the bearing 5 on the opening 6 side is brought into contact with the inner peripheral end of the small opening 14 of the housing 13. Subsequently, the closing plate 16 is pressed into the large opening 15 of the housing 13 and the end of the large opening 15 of the housing 13 is caulked and fixed. Finally, as shown in FIG. 1, the small opening 18 of the dust cover 17 is mounted on the outer periphery of the handle portion 3 of the ball stud 2, and the large opening 19 is mounted on the circumferential concave portion 22 of the housing 13, thereby completing the ball joint 1.

【0013】よって上記ボールジョイント1は、ベアリ
ング5が開口側受部7の突部8と固定部10とにおいて
ハウジング13内周面に当接しているが、固定部10と
内径側受部12と薄肉部11とにより形成される空間S
により固定部10からの締付力は緩和されるため、開口
側受部7の突部8からのみボールスタッド2の球頭部4
に予圧が付与される。また、ベアリング5の固定部10
外径はハウジング13内径よりやや大径に形成され、ベ
アリング5がハウジング13内に圧入される構造である
ので、ベアリング5は、固定部10より全周にわたって
ハウジング13内周に固定される。
Therefore, in the ball joint 1, the bearing 5 is in contact with the inner peripheral surface of the housing 13 at the projection 8 of the opening side receiving portion 7 and the fixing portion 10. Space S formed by thin portion 11
As a result, the tightening force from the fixing portion 10 is reduced, so that the ball head 4 of the ball stud 2 is formed only from the projection 8 of the opening side receiving portion 7.
Is given a preload. Also, the fixing portion 10 of the bearing 5
The outer diameter is formed slightly larger than the inner diameter of the housing 13, and the bearing 5 is press-fitted into the housing 13. Therefore, the bearing 5 is fixed to the inner circumference of the housing 13 over the entire circumference from the fixing portion 10.

【0014】[0014]

【発明の効果】以上のように本発明によれば、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
一方に開口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開口を有
するハウジングとよりなるボールジョイントにおいて、
ベアリングは、開口から連続する開口側受部と、開口側
受部から反開口側へ連続しハウジング内径よりやや大径
の外径を有する周状の固定部と、固定部より内径側に位
置する内径側受部と、内径側受部と固定部とを連結し、
ボールスタッドの球頭部を支承する薄肉部とを有し、開
口側受部にはハウジング内径よりやや大径の外径を有
し、その外周には軸線方向に延びる突部が複数形成され
ているため、ベアリングが開口側受部の突部と固定部と
においてハウジング内周面に当接しているが、固定部と
内径側受部と薄肉部とにより形成される空間により固定
部からの締付力は緩和されるため、開口側受部の突部か
らのみボールスタッドの球頭部に予圧が付与され、トル
クが高くなることが抑制される。また、ベアリングの開
口側受部外周に形成する突部がハウジングから受ける荷
重を緩和することができるため、寸法の誤差による予圧
の変化を少なくできるので、寸法精度が厳しく求められ
ず、製造が容易になる。さらにベアリングの固定部が周
状にハウジング内周に固着しているので、ベアリングが
ハウジング内で回転することを防止する。
As described above, according to the present invention, a ball stud composed of a spherical ball head and a handle protruding from the ball head, and a ball head of the ball stud are slidably and rotatably wrapped. In a ball joint comprising a bearing having an opening on one side and a housing containing the bearing and having an opening on one side for projecting a handle portion of a ball stud,
The bearing is located on the inner side from the opening, the opening-side receiving portion that is continuous from the opening, the peripheral fixing portion that is continuous from the opening-side receiving portion to the opposite opening side, and has an outer diameter slightly larger than the inner diameter of the housing. Connect the inner diameter side receiving part, the inner diameter side receiving part and the fixed part,
A thin portion for supporting the ball head of the ball stud, an opening-side receiving portion having an outer diameter slightly larger than the inner diameter of the housing, and a plurality of projections extending in the axial direction formed on the outer periphery thereof. Therefore, the bearing is in contact with the inner peripheral surface of the housing at the protrusion of the opening-side receiving portion and the fixing portion, but the bearing is tightened from the fixing portion by the space formed by the fixing portion, the inner diameter-side receiving portion, and the thin portion. Since the applied force is reduced, a preload is applied only to the ball head of the ball stud from the protrusion of the opening-side receiving portion, so that an increase in torque is suppressed. In addition, since the load received from the housing by the projection formed on the outer periphery of the bearing on the opening side of the bearing can be reduced, the change in preload due to dimensional errors can be reduced, so that dimensional accuracy is not strictly required and manufacturing is easy. become. Further, since the fixed portion of the bearing is circumferentially fixed to the inner periphery of the housing, the bearing is prevented from rotating in the housing.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施例によるボールジョイントを表す
部分断面平面図である。
FIG. 1 is a partial cross-sectional plan view illustrating a ball joint according to an embodiment of the present invention.

【図2】本発明の実施例によるベアリングを表す断面平
面図である。
FIG. 2 is a cross-sectional plan view illustrating a bearing according to an embodiment of the present invention.

【図3】図2のA−A断面図である。FIG. 3 is a sectional view taken along line AA of FIG. 2;

【図4】本発明の実施例によるボールジョイントの第1
の製造工程を表す部分断面平面図である。
FIG. 4 shows a first example of a ball joint according to an embodiment of the present invention.
FIG. 7 is a partial cross-sectional plan view illustrating a manufacturing process.

【図5】本発明の実施例によるボールジョイントの第2
の製造工程を表す部分断面平面図である。
FIG. 5 shows a second example of a ball joint according to an embodiment of the present invention.
FIG. 7 is a partial cross-sectional plan view illustrating a manufacturing process.

【図6】従来のボールジョイントを表す部分断面平面図
である。
FIG. 6 is a partial sectional plan view showing a conventional ball joint.

【符号の説明】[Explanation of symbols]

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 7 開口側受部 8 突部 9 スリット 10 固定部 11 薄肉部 12 内径側受部 13 ハウジング 14 (ハウジング)開口 2 ball stud 3 handle 4 ball head 5 bearing 6 (bearing) opening 7 opening side receiving part 8 protruding part 9 slit 10 fixing part 11 thin part 12 inner diameter side receiving part 13 housing 14 (housing) opening

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 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開口(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)を突出させる開口(1
4)を有するハウジング(13)とよりなるボールジョ
イントにおいて、前記ベアリング(5)は、開口(6)
から連続する開口側受部(7)と、該開口側受部(7)
から反開口側へ連続し前記ハウジング(13)内径より
やや大径の外径を有する周状の固定部(10)と、該固
定部(10)より内径側に位置する内径側受部(12)
と、前記内径側受部(12)と前記固定部(10)とを
連結し、前記ボールスタッド(2)の球頭部(4)を支
承する薄肉部(11)とを有し、前記開口側受部(7)
は前記ハウジング(13)内径よりやや大径の外径を有
し、その外周には軸線方向に延びる突部(8)が複数形
成されていることを特徴とするボールジョイント。
1. A ball stud (2) comprising a spherical ball head (4) and a handle (3) projecting from the ball head (4).
A bearing (5) having a ball head (4) of the ball stud (2) swingably and rotatably and having an opening (6) on one side; An opening (1) for projecting the handle (3) of the ball stud (2)
In a ball joint comprising a housing (13) having 4), the bearing (5) is provided with an opening (6).
Opening-side receiving portion (7) continuous from the opening, and the opening-side receiving portion (7)
A circumferential fixed portion (10) having an outer diameter slightly larger than the inner diameter of the housing (13) and an inner diameter receiving portion (12) located on the inner diameter side of the fixed portion (10). )
And a thin portion (11) that connects the inner diameter side receiving portion (12) and the fixed portion (10) and supports a ball head (4) of the ball stud (2). Side support (7)
Is a ball joint having an outer diameter slightly larger than the inner diameter of the housing (13), and a plurality of projections (8) extending in the axial direction formed on the outer periphery thereof.
JP2000052730A 2000-02-29 2000-02-29 Ball joint Expired - Fee Related JP3877265B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000052730A JP3877265B2 (en) 2000-02-29 2000-02-29 Ball joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000052730A JP3877265B2 (en) 2000-02-29 2000-02-29 Ball joint

Publications (2)

Publication Number Publication Date
JP2001241428A true JP2001241428A (en) 2001-09-07
JP3877265B2 JP3877265B2 (en) 2007-02-07

Family

ID=18574199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000052730A Expired - Fee Related JP3877265B2 (en) 2000-02-29 2000-02-29 Ball joint

Country Status (1)

Country Link
JP (1) JP3877265B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006292094A (en) * 2005-04-12 2006-10-26 Somic Ishikawa Inc Ball joint and its bearing seat

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Publication number Priority date Publication date Assignee Title
JP2006292094A (en) * 2005-04-12 2006-10-26 Somic Ishikawa Inc Ball joint and its bearing seat

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