JP2005315278A - Ball joint - Google Patents

Ball joint Download PDF

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Publication number
JP2005315278A
JP2005315278A JP2004130761A JP2004130761A JP2005315278A JP 2005315278 A JP2005315278 A JP 2005315278A JP 2004130761 A JP2004130761 A JP 2004130761A JP 2004130761 A JP2004130761 A JP 2004130761A JP 2005315278 A JP2005315278 A JP 2005315278A
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housing
ball
opening
retaining ring
outer periphery
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JP2004130761A
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JP4404307B2 (en
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Yasuhiro Kondo
康弘 近藤
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Musashi Seimitsu Industry Co Ltd
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Musashi Seimitsu Industry Co Ltd
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Priority to JP2004130761A priority Critical patent/JP4404307B2/en
Priority to DE200510019559 priority patent/DE102005019559B4/en
Publication of JP2005315278A publication Critical patent/JP2005315278A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
    • F16C11/0623—Construction or details of the socket member
    • F16C11/0628—Construction or details of the socket member with linings
    • F16C11/0633—Construction or details of the socket member with linings the linings being made of plastics
    • F16C11/0638—Construction or details of the socket member with linings the linings being made of plastics characterised by geometrical details

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ball joint capable of maintaining a durability of a clamping portion by surely fixing a pulling-out resisting ring and stabilizing oscillating and pivoting torque and mounting a large opening of a boot at a designated position. <P>SOLUTION: The ball joint comprises a bearing surrounding a ball stud having a ball-head portion and a handle portion extending from the ball-head portion and a bearing surrounding the ball-head portion, a housing having an opening retaining the bearing and extending the handle portion to one end, the pulling-out resisting ring which is arranged on an inner periphery of the opening of the housing and has a peripheral standing wall portion on its outer periphery and has a flange continuing to the standing wall portion and extending to the outer periphery side, and a boot having the small opening of a boot mounted on the outer periphery of the handle portion of the ball stud and the large opening of a boot mounted on the outer periphery of the standing wall portion of the pulling-out resisting ring. Further, a clamping portion fixing the flange of the pulling-out resisting ring is formed by clamping the opening of the housing in the ball joint. A recessed circumferential groove is arranged on the outer periphery of the pulling-out resisting ring, and a clamping portion of the housing is extended on the recessed circumferential groove. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば自動車の懸架装置等に使用されるボールジョイントに関する。   The present invention relates to a ball joint used, for example, in an automobile suspension system.

従来より、自動車の懸架装置の連結部には、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１２に示す如く、球状の球頭部１０４と球頭部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１０７を有する合成樹脂製のベアリング１０６と、そのベアリング１０６を内包し、一端ハウジング開口部１１１からボールスタッド１０２の柄部１０３を突出させ、その内周面にハウジング開口部１１１から連続する第一段部１１２が形成された略カップ状のハウジング１０９と、ハウジング１０９のハウジング開口部１１１内周に配置され、外周に周状の立壁部１４３を有し、その立壁部１４３に連続して外周側へ延びるフランジ１４１を有する抜け止めリング１４０と、ボールスタッド１０２の柄部１０３外周に装着されるブーツ小開口部１１８と抜け止めリング１４０の立壁部１４３外周に装着されるブーツ大開口部１１７を有するブーツ１１６とを備えているものがある。   Conventionally, ball joints have been frequently used for connecting parts of automobile suspensions. As shown in FIG. 12, such a ball joint swings a ball stud 102 having a spherical ball head 104 and a handle 103 extending from the ball head 104, and the ball head 104 of the ball stud 102. A bearing made of synthetic resin having a bearing opening 107 at one end, and a bearing 106 included therein, and a handle 103 of the ball stud 102 protruding from the housing opening 111 at one end, A substantially cup-shaped housing 109 having a first step 112 that is continuous from the housing opening 111 on the inner peripheral surface, and a peripheral standing wall 143 disposed on the inner periphery of the housing opening 111 of the housing 109. A retaining ring 140 having a flange 141 that extends to the outer peripheral side continuously to the standing wall portion 143, and the ball stud 10. There is one and a boot 116 having a boot large opening 117 which is attached to the vertical wall portion 143 outer periphery of the shank 103 boots the small openings 118 and retaining ring 140 that is mounted on the outer peripheral.

このボールジョイント１０１を組付ける場合、ハウジング開口部１１１がかしめ前の状態で軸線に沿って平行に形成されるハウジング１０９内に、ベアリング１０６及びボールスタッド１０２の球頭部１０４を挿入し、その後、ハウジング１０９の第一段部１１２にフランジ１４１が着座するよう抜け止めリング１４０を挿入する。続いて、ハウジング１０９のハウジング開口部１１１を径方向内側へかしめて、形成されるかしめ部１１０により抜け止めリング１４０が固定される。最後にブーツ１１６のブーツ大開口部１１７が抜け止めリング１４０の立壁部１４３に圧入され、ブーツ小開口部１１８がボールスタッド１０２の柄部１０３外周に圧入されて、ボールジョイント１０１が組付けられる。
実公昭５１−１４１８号公報 ドイツ特許ＤＥ４４１９９５４Ａ１公報 When assembling the ball joint 101, the ball head 104 of the bearing 106 and the ball stud 102 is inserted into the housing 109 in which the housing opening 111 is formed in parallel along the axis in a state before caulking, The retaining ring 140 is inserted into the first step 112 of the housing 109 so that the flange 141 is seated. Subsequently, the housing opening 111 of the housing 109 is caulked inward in the radial direction, and the retaining ring 140 is fixed by the caulking portion 110 formed. Finally, the boot large opening 117 of the boot 116 is press-fitted into the standing wall 143 of the retaining ring 140, and the boot small opening 118 is press-fitted into the outer periphery of the handle 103 of the ball stud 102, and the ball joint 101 is assembled.
Japanese Utility Model Publication No. 51-1418 German patent DE 44199554A1

上記ボールジョイント１０１は、ボールスタッド１０２の抜け止め用の抜け止めリング１４０をベアリング１０６とハウジング１０９との間に挿嵌後、ハウジング１０９のハウジング開口部１１１を径方向内側へかしめて、形成されるかしめ部１１０と第一段部１１２との間で抜け止めリング１４０のフランジ１４１を挟持している。ここでフランジ１４１と第一段部１１２、及びフランジ１４１とかしめ部１１０との間には、かしめ部１１０形成時に軸線方向へ押圧されるため間隙は発生しないが、抜け止めリング１４０とハウジング１０９との間には、径方向に抜け止めリング１４０挿嵌のための若干の間隙が発生する。そのためボールスタッド１０２の引張り方向の荷重に対しては、かしめ部１１０により比較的高い耐荷重性能を有するが、ボールスタッド１０２の揺動などにより生ずる径方向の荷重に対しては、フランジ１４１がかしめ部１１０と第一段部１１２との間で挟持されていても抜け止めリング１４０は径方向へ移動してしまうということがある。このように抜け止めリング１４０が径方向へ移動すると、ハウジング１０９の内周に抜け止めリング１４０のフランジ１４１が繰り返し当接し、図１３に示す如く、ハウジング１０９の内周に割れ(クラック)１５１が発生し、耐久性が低下するということがある。   The ball joint 101 is formed by inserting a retaining ring 140 for retaining the ball stud 102 between the bearing 106 and the housing 109 and then caulking the housing opening 111 of the housing 109 radially inward. A flange 141 of the retaining ring 140 is sandwiched between the caulking portion 110 and the first step portion 112. Here, there is no gap between the flange 141 and the first step portion 112 and between the flange 141 and the caulking portion 110 because it is pressed in the axial direction when the caulking portion 110 is formed, but the retaining ring 140 and the housing 109 In between, there is a slight gap for inserting the retaining ring 140 in the radial direction. For this reason, the caulking portion 110 has a relatively high load-bearing performance with respect to the load in the pulling direction of the ball stud 102, but the flange 141 is caulked with respect to the radial load caused by the swing of the ball stud 102. Even if it is sandwiched between the portion 110 and the first step portion 112, the retaining ring 140 may move in the radial direction. When the retaining ring 140 moves in the radial direction in this way, the flange 141 of the retaining ring 140 repeatedly abuts on the inner periphery of the housing 109, and a crack 151 is formed on the inner periphery of the housing 109 as shown in FIG. May occur and durability may be reduced.

また抜け止めリング１４０は、その内周側に配置されるベアリング１０６を押圧保持して適切な揺動及び回動のトルクを与えているが、抜け止めリング１４０が径方向へ移動することにより、ベアリング１０６を全周に渡って均一に押圧することができず揺動及び回動のトルクに関してバラツキが発生するということがある。   Further, the retaining ring 140 presses and holds the bearing 106 arranged on the inner peripheral side to give an appropriate swinging and rotating torque, but when the retaining ring 140 moves in the radial direction, In some cases, the bearing 106 cannot be uniformly pressed over the entire circumference, resulting in variations in swinging and rotating torque.

そこで上述の如き抜け止めリング１４０の径方向の移動を抑制するため、図１４に示す如く、かしめ前のハウジング開口部１１１の量を増やし、かしめによるかしめ部１１０の余肉１１０ａを抜け止めリング１４０の立壁部１４３に沿って形成することが考えられる。しかし、立壁部１４３にはブーツ１１６のブーツ大開口部１１７が圧入されるため、立壁部１４３に沿って所定以上の余肉１１０ａが形成されると、余肉１１０ａがブーツ大開口部１１７と干渉して、ブーツ大開口部１１７が所定位置に圧入できないということがある。   Therefore, in order to suppress the radial movement of the retaining ring 140 as described above, the amount of the housing opening 111 before caulking is increased as shown in FIG. It is conceivable that it is formed along the standing wall portion 143. However, since the large boot opening 117 of the boot 116 is press-fitted into the standing wall 143, if a surplus wall 110 a exceeding a predetermined amount is formed along the standing wall 143, the surplus 110 a interferes with the large boot opening 117. Thus, the large boot opening 117 may not be press-fitted into a predetermined position.

そこで本発明は、抜け止めリングを確実に固定することにより、かしめ部の耐久性を維持し、揺動及び回動トルクを安定させるとともに、更にブーツ大開口部を所定位置に装着可能な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 provides a ball joint that can securely fix the retaining ring, maintain the durability of the caulking portion, stabilize the swinging and turning torque, and can attach the large boot opening to a predetermined position. The purpose is to provide.

本発明は、球状の球頭部と球頭部から延出する柄部とを有するボールスタッドと、ボールスタッドの球頭部を包持するベアリングと、ベアリングを保持し、一端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、ハウジングのハウジング開口部内周に配置され、外周に周状の立壁部を有し、立壁部に連続して外周側へ延びるフランジを有する抜け止めリングと、ボールスタッドの柄部外周に装着されるブーツ小開口部と抜け止めリングの立壁部外周に装着されるブーツ大開口部を有するブーツとを備え、ハウジングのハウジング開口部をかしめて抜け止めリングのフランジを固定するかしめ部を形成するボールジョイントにおいて、抜け止めリングには、外周に凹周溝が凹設され、凹周溝にハウジングのかしめ部が延設されていることを第１の特徴とする。   The present invention relates to a ball stud having a spherical ball head and a handle portion extending from the ball head, a bearing for holding the ball head of the ball stud, a bearing, and a ball stud handle at one end. A housing having a housing opening that protrudes from the housing, and a retaining ring that is disposed on the inner periphery of the housing opening of the housing, has a circumferential standing wall on the outer periphery, and has a flange that extends to the outer periphery continuously to the standing wall. A boot having a small boot opening mounted on the outer periphery of the handle portion of the ball stud and a boot having a large boot opening mounted on the outer periphery of the standing wall portion of the retaining ring, the housing opening of the housing being caulked. In a ball joint that forms a caulking portion for fixing a flange, the retaining ring has a concave groove on the outer periphery, and the caulking portion of the housing is formed in the concave groove. That it is extended to the first feature.

また本発明は、第１の特徴に加えて、抜け止めリングの立壁部に、径方向に凹周溝が凹設されることを第２の特徴とする。   In addition to the first feature, the present invention has a second feature in that a concave circumferential groove is formed in the standing wall portion of the retaining ring in the radial direction.

更に本発明は、第１の特徴に加えて、抜け止めリングのフランジに、軸線方向に凹周溝が凹設されることを第３の特徴とする。   Furthermore, in addition to the first feature, the present invention has a third feature in that a concave circumferential groove is provided in the axial direction on the flange of the retaining ring.

本発明の第１の特徴のボールジョイントによれば、抜け止めリングには、外周に凹周溝が凹設され、凹周溝にハウジングのかしめ部が延設されているため、かしめ部の余肉が凹周溝を押圧して抜け止めリングを径方向に対し確実に固定できるので、かしめ部の耐久性を維持し、揺動及び回動トルクを安定させることができる。また、かしめ部の余肉量のばらつきを凹周溝で吸収することができるため、かしめ部の余肉量が増加しても、立壁部のブーツ大開口部が装着される位置までかしめ部の余肉がはみ出すことはなく、ブーツ大開口部を立壁部の所定位置に装着できる。   According to the ball joint of the first feature of the present invention, the retaining ring has a concave circumferential groove formed on the outer periphery, and the caulking portion of the housing extends in the concave circumferential groove. Since the meat presses the concave circumferential groove and the retaining ring can be securely fixed in the radial direction, the durability of the caulking portion can be maintained, and the swinging and turning torque can be stabilized. In addition, since the variation in the surplus amount of the caulking portion can be absorbed by the concave circumferential groove, even if the surplus amount of the caulking portion increases, the caulking portion of the standing wall portion reaches the position where the large boot opening is mounted. The excess wall does not protrude and the large boot opening can be mounted at a predetermined position on the standing wall.

更に、本発明の第２の特徴のボールジョイントによれば、抜け止めリングの立壁部に、径方向に凹周溝が凹設されるため、かしめ部が凹周溝に沿って径方向に延設されるので、引張り方向の荷重を受けるかしめ部の量を増やすことができ、ボールスタッドの引張り方向の荷重に対して更に高い耐荷重性能が得られる。   Furthermore, according to the ball joint of the second feature of the present invention, since the concave circumferential groove is formed in the standing wall portion of the retaining ring in the radial direction, the caulking portion extends in the radial direction along the concave circumferential groove. Therefore, the amount of the caulking portion that receives the load in the tensile direction can be increased, and higher load resistance performance can be obtained with respect to the load in the tensile direction of the ball stud.

更にまた、本発明の第３の特徴のボールジョイントによれば、抜け止めリングのフランジに、軸線方向に凹周溝が凹設されるため、かしめ部が凹周溝に沿って軸線方向に延設されるので、径方向の荷重を受けるかしめ部の量を増やすことができ、径方向の荷重に対して更に高い耐荷重性能が得られる。   Furthermore, according to the ball joint of the third feature of the present invention, since the concave circumferential groove is formed in the axial direction on the flange of the retaining ring, the caulking portion extends in the axial direction along the concave circumferential groove. Since it is provided, the amount of the caulking portion that receives the radial load can be increased, and higher load resistance performance can be obtained with respect to the radial load.

ボールジョイントのハウジングと抜け止めリングとを確実に固定するということを、構成部品の簡単な形状変更のみで、ボールジョイントの性能を損なわずに実現した。   The ball joint housing and retaining ring are securely fixed without changing the performance of the ball joint by simply changing the shape of the components.

本発明の実施の形態を、添付図面に示す本発明の好適な実施例に基づいて以下に説明する。   Embodiments of the present invention will be described below on the basis of preferred embodiments of the present invention shown in the accompanying drawings.

図１乃至図１１は本発明の実施例によるボールジョイントを表すもので、図１はボールジョイントを表す部分断面正面図、図２は図１のＡ部拡大図、図３は図１の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、図４は図１の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、図５は図１のボールジョイントを組付するかしめ成形前の状態を表す部分断面正面図、図６は図１のボールジョイントを組付するかしめ成形後の状態を表す部分断面正面図、図７は図５のＢ部拡大図、図８はかしめ成形の第一段階を表す要部拡大図、図９はかしめ成形の第二段階を表す要部拡大図、図１０はかしめ成形直後の状態を表す要部拡大図、図１１は他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。   1 to 11 show a ball joint according to an embodiment of the present invention. FIG. 1 is a partially sectional front view showing the ball joint, FIG. 2 is an enlarged view of a portion A in FIG. 1, and FIG. FIG. 4 is a partial sectional front view showing the second stage of assembling the ball joint of FIG. 1, and FIG. 5 is a caulking molding for assembling the ball joint of FIG. FIG. 6 is a partial cross-sectional front view showing the previous state, FIG. 6 is a partial cross-sectional front view showing the state after caulking forming with the ball joint shown in FIG. 1, FIG. 7 is an enlarged view of part B in FIG. FIG. 9 is an enlarged view of the main part showing the second stage of caulking, FIG. 10 is an enlarged view of the main part showing the state immediately after the caulking, and FIG. 11 is according to another embodiment. It is a partial section front view showing a ball joint.

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から延出し反球頭部側の端部に雌ねじ５を有する柄部３とからなるボールスタッド２を備え、合成樹脂製のベアリング６が、ボールスタッド２の球頭部４を揺動回動自在に包持している。ベアリング６の一端端部は球頭部４及び柄部３の揺動を許容するためのベアリング開口部７として開口し、他端端部は閉口する曲底部３０を有するとともに、その外周には周状の鍔部８が形成されている。このベアリング６は、カップ状のハウジング９に内包されている。   FIG. 1 shows a ball joint 1 according to an embodiment of the present invention. This ball joint 1 includes a ball stud 2 including a spherical ball head 4 and a handle portion 3 extending from the ball head 4 and having a female screw 5 at an end on the side opposite to the ball head, and is made of a synthetic resin. The bearing 6 encloses the ball head 4 of the ball stud 2 so as to swing and rotate. One end of the bearing 6 is opened as a bearing opening 7 for allowing the ball head 4 and the handle 3 to swing, and the other end has a curved bottom portion 30 which is closed, and the outer periphery thereof has a peripheral portion. A shaped collar 8 is formed. The bearing 6 is contained in a cup-shaped housing 9.

ハウジング９のベアリング開口部７側の端部は、ハウジング開口部１１として開口している。そしてハウジング９は、ハウジング開口部１１側の端部に径方向内側に曲成されるかしめ部１０を、他端端部に閉口する内底部１４を有し、かしめ部１０に連続しハウジング９の内周に第一段部１２が形成され、第一段部１２より内底部１４側に第二段部１３が形成される。この第二段部１３には、ベアリング６の鍔部８が着座され、第一段部１２には、ハウジング開口部１１の内周に配置される環状の抜け止めリング４０の外周に形成されるフランジ４１が着座される。   The end of the housing 9 on the bearing opening 7 side is opened as a housing opening 11. The housing 9 has a caulking portion 10 that is bent radially inward at the end on the housing opening 11 side, and an inner bottom portion 14 that is closed at the other end, and is continuous with the caulking portion 10. A first step portion 12 is formed on the inner periphery, and a second step portion 13 is formed closer to the inner bottom portion 14 than the first step portion 12. A flange 8 of the bearing 6 is seated on the second step portion 13, and the first step portion 12 is formed on the outer periphery of an annular retaining ring 40 disposed on the inner periphery of the housing opening 11. The flange 41 is seated.

ここで図２に示す如く、抜け止めリング４０の内周は、ベアリング６のベアリング開口部７近傍における所定の外周曲率と同一曲率の曲内面４２を有する。抜け止めリング４０の外周には、フランジ４１を中心に、軸線方向に延びる挿壁部４５及び立壁部４３が形成され、この立壁部４３に、フランジ４１に隣接して径方向に凹周溝４４が凹設され、凹周溝４４にハウジング９のかしめ部１０が延設されている。また、挿壁部４５はハウジング９のハウジング開口部１１に挿嵌され、立壁部４３にはゴム状弾性体からなるブーツ１６が装着される。具体的には、図１に示す如く、補強環２２が内部に埋設されたブーツ１６の一端側のブーツ大開口部１７が抜け止めリング４０の立壁部４３の外周に装着され、補強環２０が内部に埋設されかつ断面Ｌ字状のフェルール２４が装着されたブーツ１６の他端側のブーツ小開口部１８がボールスタッド２の柄部３の外周に装着される。   As shown in FIG. 2, the inner periphery of the retaining ring 40 has a curved inner surface 42 having the same curvature as a predetermined outer peripheral curvature in the vicinity of the bearing opening 7 of the bearing 6. On the outer periphery of the retaining ring 40, an insertion wall portion 45 and an upright wall portion 43 extending in the axial direction centering on the flange 41 are formed, and a concave groove 44 in the radial direction adjacent to the flange 41 is formed in the upright wall portion 43. The caulking portion 10 of the housing 9 is extended in the concave circumferential groove 44. The insertion wall 45 is fitted into the housing opening 11 of the housing 9, and the boot 16 made of a rubber-like elastic body is attached to the standing wall 43. Specifically, as shown in FIG. 1, the boot large opening 17 on one end side of the boot 16 in which the reinforcing ring 22 is embedded is mounted on the outer periphery of the standing wall portion 43 of the retaining ring 40, and the reinforcing ring 20 is A small boot opening 18 on the other end side of the boot 16 embedded in the ferrule 24 having an L-shaped cross section is mounted on the outer periphery of the handle 3 of the ball stud 2.

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。   Next, a method for assembling the ball joint 1 will be described.

まず、図３に示す如く、ハウジング開口部１１が軸線に沿って平行に形成されるハウジング９内に、ベアリング開口部７が軸線に沿って平行に形成されるベアリング６を挿入する。ベアリング６の挿入により、ベアリング６の曲底部３０がハウジング９の内底部１４に着座し、ベアリング６の鍔部８がハウジング９の第二段部１３に着座する。続いて、ベアリング６にボールスタッド２の球頭部４が挿入される。   First, as shown in FIG. 3, the bearing 6 in which the bearing opening 7 is formed in parallel along the axis is inserted into the housing 9 in which the housing opening 11 is formed in parallel along the axis. By inserting the bearing 6, the curved bottom portion 30 of the bearing 6 is seated on the inner bottom portion 14 of the housing 9, and the flange portion 8 of the bearing 6 is seated on the second step portion 13 of the housing 9. Subsequently, the ball head 4 of the ball stud 2 is inserted into the bearing 6.

次に、図４に示す如く、ハウジング９のハウジング開口部１１内周側に抜け止めリング４０が挿入されると同時に、図５に示す如く、ベアリング６のベアリング開口部７が抜け止めリング４０の曲内面４２に倣って径方向に内側に曲成される。そして、抜け止めリング４０のフランジ４１が、ハウジング９の第一段部１２に着座する。   Next, as shown in FIG. 4, the retaining ring 40 is inserted into the inner peripheral side of the housing opening 11 of the housing 9, and at the same time, the bearing opening 7 of the bearing 6 is inserted into the retaining ring 40 as shown in FIG. 5. The curved inner surface 42 is bent inward in the radial direction. Then, the flange 41 of the retaining ring 40 is seated on the first step portion 12 of the housing 9.

続いて、ハウジング９のハウジング開口部１１にかしめ加工を施し、図６に示す如く、かしめ部１０を形成するが、このかしめ加工状態を図７乃至図１０に基づいて説明する。   Subsequently, caulking is performed on the housing opening 11 of the housing 9 to form a caulking portion 10 as shown in FIG. 6, and the caulking state will be described with reference to FIGS.

図７に示す如く、予め軸線に沿って平行に形成されるハウジング開口部１１内周側の第一段部１２に抜け止めリング４０のフランジ４１が着座した状態で、ハウジング開口部１１の上方に配置したかしめローラを回転させ、下降させる。図８に示す如く、かしめローラ６１がハウジング開口部１１に当接すると同時に、その外周に形成した外周テーパ１１ａを径方向内側へ押圧しながらハウジング開口部１１を変形させ、図９に示す如く、ハウジング開口部１１の内端部分を抜け止めリング４０の凹周溝４４内へ流動させる。そして、図１０に示す如く、かしめローラ６１が所定位置まで下降することにより、かしめ部１０の余肉１０ａが抜け止めリング４０の凹周溝４４を径方向内側へ押圧すると同時に、かしめ部１０の余肉１０ａが凹周溝４４に充填され、かしめ部１０によりハウジング９に抜け止めリング４０が固定される。   As shown in FIG. 7, the flange 41 of the retaining ring 40 is seated on the first step 12 on the inner peripheral side of the housing opening 11 that is formed in advance along the axis, and above the housing opening 11. Rotate the caulking roller placed and lower it. As shown in FIG. 8, the caulking roller 61 contacts the housing opening 11, and at the same time, the housing opening 11 is deformed while pressing the outer peripheral taper 11a formed on the outer periphery thereof in the radial direction. The inner end portion of the housing opening 11 is caused to flow into the concave circumferential groove 44 of the retaining ring 40. Then, as shown in FIG. 10, when the caulking roller 61 is lowered to a predetermined position, the excess thickness 10a of the caulking portion 10 presses the concave circumferential groove 44 of the retaining ring 40 radially inward, and at the same time, the caulking portion 10 The excess thickness 10 a is filled in the concave circumferential groove 44, and the retaining ring 40 is fixed to the housing 9 by the caulking portion 10.

最後に、図１に示す如く、ブーツ１６のブーツ大開口部１７が抜け止めリング４０の立壁部４３に圧入され、ブーツ１６のブーツ小開口部１８がボールスタッド２の柄部３外周に圧入される。これにより、ボールジョイント１の組付が完了する。   Finally, as shown in FIG. 1, the boot large opening 17 of the boot 16 is press-fitted into the standing wall 43 of the retaining ring 40, and the boot small opening 18 of the boot 16 is press-fitted into the outer periphery of the handle 3 of the ball stud 2. The Thereby, the assembly of the ball joint 1 is completed.

上述の如きボールジョイント１は、抜け止めリング４０には、外周に凹周溝４４が凹設され、凹周溝４４にハウジング９のかしめ部１０が延設されているため、かしめ部１０の余肉１０ａが凹周溝４４を押圧して抜け止めリング４０を径方向に対し確実に固定できる。また、かしめ部１０の余肉１０ａ量のばらつきを凹周溝４４で吸収することができる。特に抜け止めリング４０の立壁部４３に、径方向内側に向かって凹周溝４４が凹設されるボールジョイント１によると、かしめ部１０が凹周溝４４に沿って径方向内側に延設されるので、引張り方向の荷重を受けるかしめ部１０の量を増やすことができる。   In the ball joint 1 as described above, the retaining ring 40 is provided with the concave circumferential groove 44 on the outer periphery, and the caulking portion 10 of the housing 9 extends in the concave circumferential groove 44. The meat 10a can press the concave circumferential groove 44 to securely fix the retaining ring 40 in the radial direction. Further, the variation in the amount of surplus 10 a of the caulking portion 10 can be absorbed by the concave groove 44. In particular, according to the ball joint 1 in which the recessed circumferential groove 44 is recessed inwardly in the standing wall portion 43 of the retaining ring 40, the caulking portion 10 extends radially inward along the recessed circumferential groove 44. Therefore, the amount of the caulking portion 10 that receives a load in the pulling direction can be increased.

次に、図１１に示す本発明の他の実施例のボールジョイント１について説明する。   Next, a ball joint 1 according to another embodiment of the present invention shown in FIG. 11 will be described.

この他の実施例のボールジョイント１は、抜け止めリング４０の立壁部４３に、フランジ４１に隣接して径方向内側に向かって凹設される凹周溝４４に代えて、抜け止めリング４０ｂのフランジ４１ｂに、立壁部４３ｂに隣接して軸線方向に凹周溝４４ｂを凹設したもので、凹周溝４４ｂに充填されるかしめ部１０ｂも軸線方向に延設される。この他の実施例のボールジョイント１ｂによると、かしめ部１０ｂが凹周溝４４ｂに沿って軸線方向に延設されるので、径方向の荷重を受けるかしめ部１０ｂの量を増やすことができる。   The ball joint 1 according to this other embodiment has a retaining ring 40b in place of a concave circumferential groove 44 that is formed in the standing wall portion 43 of the retaining ring 40 and is recessed radially inwardly adjacent to the flange 41. In the flange 41b, a concave groove 44b is formed in the axial direction adjacent to the standing wall 43b, and the caulking portion 10b filled in the concave groove 44b is also extended in the axial direction. According to the ball joint 1b of the other embodiment, since the caulking portion 10b extends in the axial direction along the concave circumferential groove 44b, the amount of the caulking portion 10b that receives a radial load can be increased.

以上、本発明の好適実施例について説明したが、本発明は、上記実施例に限定されるものではなく、その要旨を逸脱しない範囲で種々の設計変更が可能である。例えば、上記実施例の抜け止めリング４０，４０ｂの凹周溝４４，４４ｂは径方向又は軸線方向に形成したが、径又は軸線に対して傾斜する方向に凹周溝を凹設しても良い。   The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention. For example, although the concave circumferential grooves 44, 44b of the retaining rings 40, 40b of the above embodiment are formed in the radial direction or the axial direction, the concave circumferential grooves may be provided in a direction inclined with respect to the diameter or the axial line. .

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。It is a fragmentary sectional front view showing the ball joint by the example of the present invention. 図１のＡ部拡大図である。It is the A section enlarged view of FIG. 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。It is a fragmentary sectional front view showing the 1st step of assembling the ball joint by the example of the present invention. 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。It is a fragmentary sectional front view showing the 2nd step which assembles | attaches the ball joint by the Example of this invention. 本発明の実施例によるボールジョイントを組付するかしめ成形前の状態を表す部分断面正面図である。It is a fragmentary sectional front view showing the state before caulking molding which assembles the ball joint by the example of the present invention. 本発明の実施例によるボールジョイントを組付するかしめ成形後の状態を表す部分断面正面図である。It is a fragmentary sectional front view showing the state after caulking molding which assembles the ball joint by the example of the present invention. 図５のＢ部拡大図である。It is the B section enlarged view of FIG. 本発明の実施例によるかしめ成形の第一段階を表す要部拡大図である。It is a principal part enlarged view showing the 1st step of the crimping shaping | molding by the Example of this invention. 本発明の実施例によるかしめ成形の第二段階を表す要部拡大図である。It is a principal part enlarged view showing the 2nd step of the crimping shaping | molding by the Example of this invention. 本発明の実施例によるかしめ成形直後の状態を表す要部拡大図である。It is a principal part enlarged view showing the state immediately after crimping shaping | molding by the Example of this invention. 本発明の他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。It is a fragmentary sectional front view showing the ball joint by other examples of the present invention. 従来のボールジョイントを表す部分断面正面図である。It is a fragmentary sectional front view showing the conventional ball joint. 図１２のＣ部拡大図である。It is the C section enlarged view of FIG. 従来の他の実施例によるボールジョイントの要部拡大図である。It is a principal part enlarged view of the ball joint by other conventional examples.

符号の説明Explanation of symbols

２ ボールスタッド
３ 柄部
４ 球頭部
６ ベアリング
９ ハウジング
１０ かしめ部
１１ ハウジング開口部
１６ ブーツ
１７ ブーツ大開口部
１８ ブーツ小開口部
４０ 抜け止めリング
４０ｂ 抜け止めリング
４１ フランジ
４１ｂ フランジ
４３ 立壁部
４４ 凹周溝
４４ｂ 凹周溝 2 Ball Stud 3 Handle 4 Ball Head 6 Bearing 9 Housing 10 Caulking 11 Housing Opening 16 Boot 17 Boot Large Opening 18 Boot Small Opening 40 Retaining Ring 40b Retaining Ring 41 Flange 41b Flange 43 Standing Wall 44 Recess Circumferential groove 44b Concave groove

Claims (3)

球状の球頭部(４)と該球頭部(４)から延出する柄部(３)とを有するボールスタッド（２）と、該ボールスタッド(２)の球頭部(４)を包持するベアリング（６）と、該ベアリング（６）を保持し、一端にボールスタッド（２）の柄部（３）を突出させるハウジング開口部（１１）を有するハウジング（９）と、該ハウジング（９）のハウジング開口部（１１）内周に配置され、外周に周状の立壁部(４３)を有し、該立壁部（４３）に連続して外周側へ延びるフランジ（４１）を有する抜け止めリング（４０）と、前記ボールスタッド（２）の柄部（３）外周に装着されるブーツ小開口部（１８）と抜け止めリング（４０）の立壁部（４３）外周に装着されるブーツ大開口部（１７）を有するブーツ（１６）とを備え、前記ハウジング（９）のハウジング開口部（１１）をかしめて抜け止めリング（４０）のフランジ（４１）を固定するかしめ部（１０）を形成するボールジョイントにおいて、前記抜け止めリング（４０）には、外周に凹周溝(４４)が凹設され、該凹周溝（４４）にハウジング（９）のかしめ部（１０）が延設されていることを特徴とするボールジョイント。   A ball stud (2) having a spherical ball head (4) and a handle (3) extending from the ball head (4), and a ball head (4) of the ball stud (2) are wrapped. A bearing (6) to be held, a housing (9) having a housing opening (11) for holding the bearing (6) and projecting the handle (3) of the ball stud (2) at one end; 9) The housing opening (11) is disposed on the inner periphery, has a circumferential standing wall (43) on the outer periphery, and has a flange (41) extending continuously from the standing wall (43) to the outer periphery. A retaining ring (40), a boot small opening (18) attached to the outer periphery of the handle (3) of the ball stud (2), and a boot attached to the outer periphery of the standing wall (43) of the retaining ring (40) A boot (16) having a large opening (17), the housing (9) housing In the ball joint that forms the caulking portion (10) for fixing the flange (41) of the retaining ring (40) by caulking the groove opening (11), the retaining ring (40) has a concave circumferential groove on the outer periphery. (44) is recessed, and the caulking portion (10) of the housing (9) extends in the recessed circumferential groove (44). 前記抜け止めリング（４０）の立壁部（４３）に、径方向に凹周溝（４４）が凹設され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 ball joint according to claim 1, wherein a concave circumferential groove (44) is provided in a radial direction in the standing wall (43) of the retaining ring (40). 前記抜け止めリング（４０ｂ）のフランジ（４１ｂ）に、軸線方向に凹周溝（４４ｂ）が凹設され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 ball joint according to claim 1, wherein a concave circumferential groove (44b) is provided in the axial direction on the flange (41b) of the retaining ring (40b).
JP2004130761A 2004-04-27 2004-04-27 Ball joint Expired - Fee Related JP4404307B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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KR100837574B1 (en) * 2007-06-27 2008-06-12 주식회사 센트랄 Caulking structure of ball joint housing
CN111188828A (en) * 2020-02-18 2020-05-22 深圳力合精密装备科技有限公司 Rocking pair and air bearing assembly using same

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DE102006060994B4 (en) * 2006-12-20 2010-02-11 Zf Friedrichshafen Ag Stainless steel ball studs and sleeves
DE102009016079B4 (en) 2009-04-03 2018-09-06 Zf Friedrichshafen Ag Ball stud made of a steel with a bainitic structure and method for producing such ball studs
DE102011084163A1 (en) * 2011-10-07 2013-04-11 Zf Friedrichshafen Ag Connecting arrangement for a vehicle

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JP4514937B2 (en) * 2000-11-24 2010-07-28 株式会社ソミック石川 Ball joint
DE10139564A1 (en) * 2001-08-10 2003-02-20 Audi Ag Ball-and-socket joint for use in car suspension systems has steel ball and shaft and socket made of material with smaller E-modulus which is reinforced with steel pins

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100837574B1 (en) * 2007-06-27 2008-06-12 주식회사 센트랄 Caulking structure of ball joint housing
CN111188828A (en) * 2020-02-18 2020-05-22 深圳力合精密装备科技有限公司 Rocking pair and air bearing assembly using same

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