JP2003194038A - Ball joint - Google Patents
Ball jointInfo
- Publication number
- JP2003194038A JP2003194038A JP2001393406A JP2001393406A JP2003194038A JP 2003194038 A JP2003194038 A JP 2003194038A JP 2001393406 A JP2001393406 A JP 2001393406A JP 2001393406 A JP2001393406 A JP 2001393406A JP 2003194038 A JP2003194038 A JP 2003194038A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- spacer
- inner peripheral
- ball stud
- shaft portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F16C11/0614—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part of the joint being open on two sides
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
【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 in, for example, a suspension system for automobiles.
【０００２】[0002]
【従来の技術】従来より自動車の懸架装置や操舵装置の
連結部には、ボールジョイントが頻繁に使用されてい
た。このようなボールジョイントには図７に示される如
きものがある。このボールジョイントは両軸タイプのボ
ールジョイント１０１である。１０２はボールスタッド
で、球状の球頭部１０３とその球頭部１０３から同軸上
に突出する２本の柄部１０５，１０５からなり、柄部１
０５，１０５の外周には周状にブーツ装着溝１４１，１
４１が形成さている。ボールスタッド１０２の球頭部１
０３の外周側にはベアリング１５１が配設される。この
ベアリング１５１は球頭部１０３と略同一曲率の内曲面
１５２を有し、球頭部１０３を揺動回動自在に包持す
る。ベアリング１５１の外周には略円筒状で金属製のハ
ウジング１７１が配設されており、一端に小開口１７
２、他端に大開口１７３を有している。１５６は抜け止
め具で、環状で断面Ｌ字形状であり、ハウジング１７１
の大開口１７３内周の径方向に延びる段状の突当て面１
７４に着座しており、ハウジング１７１の大開口１７３
側端部を内周側に折曲することによりかしめ固定されて
いる。１６１，１６１はブーツであり、一端に小開口部
１６２，１６２を有し他端に補強環１６４，１６４が埋
設された大開口部１６３，１６３を有している。このブ
ーツ１６１は、ボールスタッド１０２のブーツ装着溝１
４１，１４１に小開口部１６２，１６２が装着されてい
る。また一方のブーツ１６１はハウジング１７１の小開
口１７２内周に大開口部１６３が圧入され、他方のブー
ツ１７１は抜け止め具１５６の内周に大開口部１６３が
各々圧入されている。2. Description of the Related Art Conventionally, ball joints have been frequently used for connecting parts of suspension systems and steering systems of automobiles. There is such a ball joint as shown in FIG. This ball joint is a biaxial type ball joint 101. Reference numeral 102 denotes a ball stud, which is composed of a spherical ball head 103 and two handle parts 105, 105 coaxially protruding from the ball head 103.
The boot mounting grooves 141, 1 are circumferentially formed on the outer periphery of 05, 105.
41 is formed. Ball head 1 of ball stud 102
A bearing 151 is arranged on the outer peripheral side of 03. The bearing 151 has an inner curved surface 152 having substantially the same curvature as the ball head 103, and encloses the ball head 103 in a swingable manner. A substantially cylindrical metal housing 171 is arranged on the outer periphery of the bearing 151, and has a small opening 17 at one end.
2 has a large opening 173 at the other end. Reference numeral 156 denotes a retainer, which is annular and has an L-shaped cross section.
Stepped abutting surface 1 extending radially of the inner periphery of the large opening 173 of
A large opening 173 in the housing 171
It is fixed by caulking by bending the side end portion to the inner peripheral side. The boots 161 and 161 have small openings 162 and 162 at one end and large openings 163 and 163 in which the reinforcing rings 164 and 164 are embedded at the other end. The boot 161 has a boot mounting groove 1 of the ball stud 102.
Small openings 162 and 162 are attached to 41 and 141, respectively. Further, one boot 161 has a large opening 163 press-fitted into the inner circumference of the small opening 172 of the housing 171, and the other boot 171 has a large opening 163 press-fitted into the inner circumference of the retaining member 156.
【０００３】このようなボールジョイントとしては、実
開平１−１７３５１８号などがある。An example of such a ball joint is Jitsukaihei 1-173518.
【０００４】[0004]
【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、タイヤの動きに追従してボールスタッ
ド１０２の球頭部１０３とベアリング１５１との間で揺
動・回動するが、回転方向の力が加わったときにその力
の大小に拘わらずボールスタッド１０２の球頭部１０３
とベアリング１５１との間が回動していた。そのため、
回転方向のトルク設定を低くすると、サスペンションが
動きやすくなるために乗り心地は良くなるが、悪路等を
走行したときにボールジョイント１０１の回動量が大き
くなり、車体に対してサスペンションが上下に動き、操
縦性が安定しない。また、回転方向のトルク設定を高く
すると、サスペンションの姿勢が安定するため操縦安定
性は良くなるが、ボールジョイント１０１の回動量が小
さくなり、サスペンションが動きにくくなるためにタイ
ヤの動きに追従しなくなって、通常の走行時に乗り心地
が悪くなるという不具合が発生していた。The ball joint 101 as described above oscillates / rotates between the ball head 103 of the ball stud 102 and the bearing 151 following the movement of the tire. When a force is applied, regardless of the magnitude of the force, the ball head 103 of the ball stud 102
And the bearing 151 were rotating. for that reason,
When the torque setting in the rotation direction is set low, the ride becomes comfortable because the suspension moves easily, but the amount of rotation of the ball joint 101 increases when traveling on a bad road, etc., and the suspension moves up and down with respect to the vehicle body. , The maneuverability is not stable. Further, when the torque setting in the rotation direction is increased, the posture of the suspension is stabilized, and thus the steering stability is improved, but the amount of rotation of the ball joint 101 is reduced, and the suspension becomes difficult to move, so that it does not follow the movement of the tire. As a result, there was a problem that the riding comfort was poor during normal driving.
【０００５】従って、本発明は上述の如き課題を解決
し、走行状態に応じて所望の回動トルクを得ることがで
きるボールジョイントを提供することを目的とする。Therefore, it is an object of the present invention to solve the above-mentioned problems and to provide a ball joint capable of obtaining a desired turning torque according to a running state.
【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 constitution of the present invention is as follows.
【０００７】１ 略球状の球頭部と球頭部を中心に同軸
上に突出する軸部とを有するボールスタッドと、ボール
スタッドの球頭部と同一曲率の内曲面を有し球頭部を包
持するベアリングと、ベアリングを保持する略円筒状の
ハウジングとからなるボールジョイントにおいて、ボー
ルスタッドは、外周に略半球状の外曲面を有し内周にボ
ールスタッドの軸線方向中央から端部方向に向かって漸
次拡径する内周テーパを有する一対の内球リングと、内
球リングの内周テーパと係合する外周テーパを有するス
ペーサと、スペーサの内周側に配置される円柱状又は円
筒状の軸部とを備え、軸部の外周面には第一嵌合部であ
る凸部または凹部、スペーサの内周面には第二嵌合部で
ある凹部または凸部が形成され、第一嵌合部と第二嵌合
部は嵌合状態で径方向に空間が形成される。1 A ball stud having a substantially spherical ball head and a shaft portion projecting coaxially about the ball head, and a ball head having an inner curved surface with the same curvature as the ball head of the ball stud. In a ball joint consisting of a bearing that encloses and a substantially cylindrical housing that holds the bearing, the ball stud has a substantially hemispherical outer curved surface on the outer circumference and an inner peripheral direction from the axial center of the ball stud to the end direction. A pair of inner spherical rings having an inner peripheral taper that gradually expands in diameter toward each other, a spacer having an outer peripheral taper that engages with the inner peripheral taper of the inner spherical ring, and a columnar or cylindrical member arranged on the inner peripheral side of the spacer. And a concave portion or convex portion that is a second fitting portion is formed on the outer peripheral surface of the shaft portion, and the inner peripheral surface of the spacer is a second fitting portion. The one fitting part and the second fitting part are in a radial direction in the fitted state A space is formed in the direction.
【０００８】２ 略球状の球頭部と球頭部を中心に同軸
上に突出する軸部とを有するボールスタッドと、ボール
スタッドの球頭部と同一曲率の内曲面を有し球頭部を包
持するベアリングと、ベアリングを保持する略円筒状の
ハウジングとからなるボールジョイントにおいて、ボー
ルスタッドは、その球頭部が、外周に略半球状の外曲面
を有し内周にボールスタッドの軸線方向中央から端部方
向に向かって漸次縮径する内周テーパを有する一対の内
球リングと、内球リングの内周テーパと係合する外周テ
ーパを有するスペーサと、スペーサの内周側に配置され
る円柱状又は円筒状の軸部とを備え、軸部の外周面には
第一嵌合部である凸部または凹部、スペーサの内周面に
は第二嵌合部である凹部または凸部が形成され、第一嵌
合部と第二嵌合部は嵌合状態で径方向に空間が形成され
る。2. A ball stud having a substantially spherical ball head and a shaft portion projecting coaxially about the ball head, and a ball head having an inner curved surface with the same curvature as the ball head of the ball stud. In a ball joint consisting of a bearing to be enclosed and a substantially cylindrical housing that holds the bearing, the ball stud has a ball head having a substantially hemispherical outer curved surface on the outer circumference and an axial line of the ball stud on the inner circumference. A pair of inner spherical rings having an inner peripheral taper that gradually decreases in diameter from the center of the direction toward the end, a spacer having an outer peripheral taper that engages with the inner peripheral taper of the inner spherical ring, and arranged on the inner peripheral side of the spacer And a cylindrical or cylindrical shaft portion, the outer peripheral surface of the shaft portion is a convex portion or a concave portion which is a first fitting portion, and the inner peripheral surface of the spacer is a concave portion or a convex portion which is a second fitting portion. Part is formed, the first fitting part and the second fitting part are A space is formed in the radial direction in the fitted state.
【０００９】[0009]
【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。Embodiments of the present invention will be described below with reference to FIGS.
【００１０】図１に示すも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、
略楕円形状の球頭部３と球頭部３を中心に配置される円
筒状の軸部５とを有するボールスタッド２と、ボールス
タッド２の球頭部３の外曲面１３と同一曲率の内曲面５
２を有し球頭部３を包持するベアリング５１と、ベアリ
ング５１を保持する略円筒状のハウジング７１とを備え
る。上記ベアリング５１は合成樹脂製で、一端端部から
中央付近まで切欠かれたスリット５３が周方向に等間隔
で複数設けられている。またハウジング７１は、その内
周にベアリング５１の外周形状と同一形状の中央保持部
７５が形成され、中央保持部７５に連続し、その一端端
部側から内周側に周状に突出する内周鍔部７６、他端端
部側から外周側に延びる突当て面７４が形成され、更に
内周鍔部７６に連続し一端端部で開口する小開口７２、
突当て面７４に連続し他端端部で開口する大開口７３が
形成される。５６は、環状で断面Ｌ字形状の抜け止め具
５６で、ハウジング７１の突当て面７４に着座され、ハ
ウジング７１の大開口７３側端部を内周側に折曲するこ
とによりかしめ固定される。６１，６１はブーツで、一
端に小開口部６２，６２、他端に補強環６４，６４が埋
設された大開口部６３，６３を有している。このブーツ
６１，６１は、ボールスタッド２の軸部５外周に小開口
部６２，６２が装着され、ハウジング７１の小開口７２
側端部内周に一方ブーツ６１の大開口部６３が、抜け止
め具５６の内周に他方ブーツ６１の大開口部６３が各々
装着されている。また６６，６６はストッパで、外周側
に周状に突出するフランジ７７，７７を有し、ボールス
タッド２の両端端部に各々固定される。このボールスタ
ッド２に固定されたストッパ６６，６６のフランジ７
７，７７は、ブーツ６１，６１の小開口部６２，６２が
ボールスタッド２から外れることを防止する。Shown in FIG. 1 is a ball joint 1 according to an embodiment of the present invention. This ball joint 1
A ball stud 2 having a substantially elliptical ball head 3 and a cylindrical shaft portion 5 arranged around the ball head 3, and an outer curved surface 13 of the ball head 3 of the ball stud 2 having the same curvature. Curved surface 5
A bearing 51 having a ball head 3 and having a ball head 3 and a substantially cylindrical housing 71 holding the bearing 51 are provided. The bearing 51 is made of synthetic resin, and is provided with a plurality of slits 53 notched from one end to the vicinity of the center at equal intervals in the circumferential direction. Further, the housing 71 has a central holding portion 75 having the same shape as the outer circumferential shape of the bearing 51 formed on the inner circumference thereof, which is continuous with the central holding portion 75 and which projects circumferentially from one end portion side toward the inner circumferential side. A peripheral flange portion 76, an abutting surface 74 extending from the other end portion side to the outer peripheral side are formed, and a small opening 72 that is continuous with the inner peripheral flange portion 76 and opens at one end portion,
A large opening 73 that is continuous with the abutting surface 74 and opens at the other end is formed. Reference numeral 56 denotes an annular retainer 56 having an L-shaped cross section, which is seated on the abutting surface 74 of the housing 71 and fixed by caulking by bending the end of the housing 71 on the side of the large opening 73 toward the inner peripheral side. . Boots 61, 61 have small openings 62, 62 at one end and large openings 63, 63 in which reinforcing rings 64, 64 are embedded at the other end. The boots 61, 61 have small openings 62, 62 mounted on the outer periphery of the shaft portion 5 of the ball stud 2, and the small openings 72 of the housing 71.
The large opening 63 of the one boot 61 is mounted on the inner circumference of the side end portion, and the large opening 63 of the other boot 61 is mounted on the inner circumference of the retainer 56. Further, 66 and 66 are stoppers, which have flanges 77 and 77 projecting circumferentially on the outer peripheral side, and are fixed to both ends of the ball stud 2. The flanges 7 of the stoppers 66, 66 fixed to the ball stud 2
7, 77 prevent the small openings 62, 62 of the boots 61, 61 from coming off the ball stud 2.
【００１１】続いて、ボールスタッド２の構造を図２及
び図３に基づいて更に詳細に説明する。５は円筒状の軸
部で、軸部５中央付近に軸線方向に延びる第一嵌合部で
ある凹部７が周方向に等間隔で複数形成される。ここで
軸部５の一方端部と凹部７との間には外周側に周状に突
出する外周鍔部６、軸部５の他方端部と凹部７との間に
は雄ねじ８が形成され、更に雄ねじ８には環状のナット
３６が螺合する。また軸部５の凹部７外周側には、凹部
７に係合する第二嵌合部である凸部１８を内周に有する
スペーサ１６が左右対称に配置される。このスペーサ１
６の凸部１８の外径は軸部５の凹部７の内径よりやや小
径に形成されているので、図３に示す如く、スペーサ１
６の凸部１８と軸部５の凹部７との間には空間Ｓが形成
されている。またこのスペーサ１６は軸線方向に移動可
能で、その外周には軸部５の軸線方向中央に向かって漸
次縮径する外周テーパ１７が各々形成される。そしてス
ペーサ１６の外周側には、外周テーパ１７に係合する内
周テーパ１２を内周に有し、外周に略半楕円形状の外曲
面１３を有する内球リング１１が左右対称に配置され
る。この左右対称の内球リング１１，１１の外曲面１
３，１３が、ボールスタッド２の球頭部３を構成する。
また内球リング１１，１１間には複数の第一弾性体３
１、例えば皿バネが介在され、更に一方スペーサ１６と
外周鍔部６、及び他方スペーサ１６とナット３６との間
には第二弾性体２６、例えば皿バネがワッシャ２１とと
もに介在される。Next, the structure of the ball stud 2 will be described in more detail with reference to FIGS. 2 and 3. Reference numeral 5 denotes a cylindrical shaft portion, and a plurality of recesses 7 as first fitting portions extending in the axial direction are formed in the vicinity of the center of the shaft portion 5 at equal intervals in the circumferential direction. Here, an outer peripheral flange 6 is formed between the one end of the shaft portion 5 and the recess 7, and the male screw 8 is formed between the other end of the shaft portion 5 and the recess 7. Further, an annular nut 36 is screwed onto the male screw 8. Further, on the outer peripheral side of the concave portion 7 of the shaft portion 5, a spacer 16 having a convex portion 18 that is a second fitting portion that engages with the concave portion 7 on the inner periphery is arranged symmetrically. This spacer 1
Since the outer diameter of the convex portion 18 of 6 is slightly smaller than the inner diameter of the concave portion 7 of the shaft portion 5, as shown in FIG.
A space S is formed between the convex portion 18 of 6 and the concave portion 7 of the shaft portion 5. Further, the spacer 16 is movable in the axial direction, and an outer peripheral taper 17 is formed on the outer periphery of the spacer 16 so as to gradually reduce its diameter toward the axial center of the shaft portion 5. Further, on the outer peripheral side of the spacer 16, an inner spherical ring 11 having an inner peripheral taper 12 engaging with an outer peripheral taper 17 on the inner peripheral side and having a substantially semi-elliptical outer curved surface 13 on the outer peripheral side is arranged symmetrically. . The outer curved surface 1 of this symmetrical inner spherical ring 11, 11.
The balls 3 and 13 form the ball head 3 of the ball stud 2.
Further, a plurality of first elastic bodies 3 are provided between the inner spherical rings 11, 11.
1. For example, a disc spring is interposed, and a second elastic body 26, for example, a disc spring, is further interposed between the spacer 16 and the outer peripheral flange portion 6, and the spacer 16 and the nut 36 on the other side together with the washer 21.
【００１２】次に上記ボールジョイント１の組付方法に
ついて、図４及び図５に基づいて説明する。Next, a method of assembling the ball joint 1 will be described with reference to FIGS. 4 and 5.
【００１３】図４はボールジョイント１組付けの第一段
階である、ボールスタッド２の組付けを表す。ボールス
タッド２の組付けは、まず軸部５に雄ねじ８側端部から
皿バネ２６及びワッシャ２１を外周鍔部６に当接する位
置まで挿嵌し、続いて外周テーパ１７の大径側を先頭に
スペーサ１６の凸部１８を軸部５の凹部７に係合させな
がら挿嵌する。そして連続的に内周テーパ１２の大径側
を先頭に内球リング１１を軸部５に挿嵌し、スペーサ１
６の外周テーパ１７と内球リング１１の内周テーパ１２
とを係合させ、更に同方向に傾斜しスペーサ１６の内球
段部１４を押圧する二枚の皿バネ３１，３１を軸部５に
挿嵌する。その後、軸部５の軸線中央垂直面を中心に対
称となるように、更に皿バネ３１，３１、内球リング１
１、スペーサ１６、ワッシャ２１及び皿バネ２６を挿嵌
後、ナット３６を軸部５の雄ねじ８に螺合し、図２に示
す如きボールスタッド２を組付ける。FIG. 4 shows the assembly of the ball stud 2, which is the first stage of the assembly of the ball joint 1. To assemble the ball stud 2, first, insert the disc spring 26 and the washer 21 into the shaft portion 5 from the end of the male screw 8 side to the position where the disc spring 26 and the washer 21 come into contact with the outer peripheral flange portion 6, and then, the large diameter side of the outer peripheral taper 17 is the leading end. The convex portion 18 of the spacer 16 is fitted into the concave portion 7 of the shaft portion 5 while being inserted thereinto. Then, the inner spherical ring 11 is continuously inserted into the shaft portion 5 with the large diameter side of the inner peripheral taper 12 being the leading end, and the spacer 1
6, the outer taper 17 and the inner taper 12 of the inner ring 11.
Are engaged with each other, and further two disc springs 31, 31 that are inclined in the same direction and press the inner spherical stepped portion 14 of the spacer 16 are inserted into the shaft portion 5. After that, the disc springs 31, 31 and the inner ball ring 1 are further arranged so as to be symmetrical about the plane perpendicular to the center of the axis of the shaft portion 5.
1, the spacer 16, the washer 21 and the disc spring 26 are inserted and fitted, and then the nut 36 is screwed into the male screw 8 of the shaft portion 5 to assemble the ball stud 2 as shown in FIG.
【００１４】続いて、図５に示す如く、組付けたボール
スタッド２の軸部５の一方端部側から、スリット５３を
先頭にベアリング５１を挿嵌し、球頭部３にベアリング
５１を係合させた後、ボールスタッド２の軸部５の他方
端部側から、大開口７３を先頭にハウジング７１を挿嵌
する。その後、ハウジング７１の大開口７３内周に抜け
止め具５６を挿嵌し、ハウジング７１の突き当て面７４
に当接する位置に配置後、ハウジング７１の大開口７３
側端部を内周側に折曲することにより、抜け止め具５６
をかしめ固定する。更に続いて、ハウジング７１の両側
からブーツ６１，６１が挿入されると同時に、ボールス
タッド２の軸部５両端部側外周に小開口部６２，６２が
装着され、ハウジング７１の小開口７２側端部内周に一
方ブーツ６１の大開口部６３が、抜け止め具５６の内周
に他方ブーツ６１の大開口部６３が各々装着される。そ
して最後に、ボールスタッド２の軸部５両端部にブーツ
６１，６１抜け止め用のストッパ６６，６６が装着され
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。Subsequently, as shown in FIG. 5, a bearing 51 is inserted into the ball head 3 by inserting a bearing 51 from one end side of the shaft portion 5 of the assembled ball stud 2 with a slit 53 at the head. After fitting, the housing 71 is inserted from the other end side of the shaft portion 5 of the ball stud 2 with the large opening 73 at the head. After that, the retaining member 56 is inserted into the inner circumference of the large opening 73 of the housing 71, and the abutting surface 74 of the housing 71 is inserted.
The large opening 73 of the housing 71
By bending the side end portion toward the inner peripheral side, the retainer 56
Secure by crimping. Further, subsequently, boots 61, 61 are inserted from both sides of the housing 71, and at the same time, small openings 62, 62 are attached to the outer circumferences of both ends of the shaft portion 5 of the ball stud 2, and the ends of the housing 71 on the small opening 72 side are attached. The large opening 63 of the one boot 61 is mounted on the inner circumference of the part, and the large opening 63 of the other boot 61 is mounted on the inner circumference of the retaining member 56. Finally, the boots 61, 61 stoppers 66, 66 for preventing slipping off are attached to both ends of the shaft portion 5 of the ball stud 2, and the assembly of the ball joint 1 as shown in FIG. 1 is completed.
【００１５】上述の如く組付けられたボールジョイント
１の回転トルクは、ボールジョイント１を回転させよう
とする力とボールジョイント１の軸部中心からの距離に
影響されるため、ボールジョイント１に回転方向の力が
加わったとき、回転トルクが低く軸部５中心からの距離
が短い軸部５とスペーサ１６との間において、径方向の
空間Ｓの範囲内で回動する。しかしスペーサ１６の第二
嵌合部である凸部１８が軸部５の第一嵌合部である凹部
７に接触すると軸部５とスペーサ１６間での回動は止ま
り、次いで軸部５中心からの距離が軸部５とスペーサ１
６との間より長く、回転トルクの高い内球リング１１の
内周テーパ１２とスペーサ１６の外周テーパ１７との間
で回動する。よって、通常の走行時のようにボールジョ
イント１を回転させようとする力が小さいときには回転
トルクの低い軸部５とスペーサ１６との間で回動され、
悪路走行時のようにボールジョイント１が大きく回動す
るときには、軸部５とスペーサ１６との間に加え、回転
トルクの高い内球リング１１の内周テーパ１２とスペー
サ１６の外周テーパ１７との間で回動される。The rotating torque of the ball joint 1 assembled as described above is influenced by the force for rotating the ball joint 1 and the distance from the center of the shaft portion of the ball joint 1, so that the ball joint 1 rotates. When a directional force is applied, the shaft 16 rotates within the space S in the radial direction between the spacer 16 and the spacer 16 that have a low rotational torque and a short distance from the center of the shaft 5. However, when the convex portion 18 which is the second fitting portion of the spacer 16 comes into contact with the concave portion 7 which is the first fitting portion of the shaft portion 5, the rotation between the shaft portion 5 and the spacer 16 is stopped, and then the center of the shaft portion 5 is stopped. Distance from the shaft 5 and spacer 1
6 and the outer peripheral taper 17 of the spacer 16 are rotated. Therefore, when the force for rotating the ball joint 1 is small as in normal traveling, the ball joint 1 is rotated between the shaft portion 5 and the spacer 16 having a low rotational torque,
When the ball joint 1 makes a large rotation such as when traveling on a rough road, in addition to the space between the shaft portion 5 and the spacer 16, the inner peripheral taper 12 of the inner ball ring 11 and the outer peripheral taper 17 of the spacer 16 having a high rotational torque are formed. Is rotated between.
【００１６】尚、上記実施例では、軸部５の内周面には
第一嵌合部である凹部７、スペーサ１６の外周面には第
二嵌合部である凸部１８が設けられ、凹部７と凸部１８
との間には径方向の空間Ｓが形成されているが、軸部５
の内周面に凸部、スペーサ１６の外周面に凹部を設け、
軸部５の凸部とスペーサ１６の凹部との間に空間が形成
された構成でも同様の効果が得られる。In the above embodiment, the inner peripheral surface of the shaft portion 5 is provided with the concave portion 7 which is the first fitting portion, and the outer peripheral surface of the spacer 16 is provided with the convex portion 18 which is the second fitting portion. Concave portion 7 and convex portion 18
A space S in the radial direction is formed between the shaft portion 5 and
A convex portion on the inner peripheral surface and a concave portion on the outer peripheral surface of the spacer 16,
The same effect can be obtained with a structure in which a space is formed between the convex portion of the shaft portion 5 and the concave portion of the spacer 16.
【００１７】また、上記実施例では、内球リング１１が
軸線方向中央から端部方向に向かって漸次拡径する内周
テーパ１２を有し、スペーサ１６が内周テーパ１２に係
合する外周テーパ１７を有しているが、図６に示す如
く、内周テーパ１２及び外周テーパ１７が軸線方向中央
から端部方向に向かって漸次縮径する形状にしても良
い。このような構成においても、ボールジョイント１に
かかる荷重が小さいときにはまず軸部５とスペーサ１６
との間で回動し、スペーサ１６の第二嵌合部である凸部
１８が軸部５の第一嵌合部である凹部７に接触すると軸
部５１とスペーサ１６間での回動は止まり、次いで内球
リング１１の内周テーパ１２とスペーサ１６の外周テー
パ１７との間で回動する。Further, in the above embodiment, the inner spherical ring 11 has the inner peripheral taper 12 whose diameter gradually increases from the center in the axial direction toward the end portion, and the outer peripheral taper in which the spacer 16 engages with the inner peripheral taper 12. However, as shown in FIG. 6, the inner peripheral taper 12 and the outer peripheral taper 17 may have a shape in which the diameter gradually decreases from the axial center toward the end. Even in such a configuration, when the load applied to the ball joint 1 is small, the shaft portion 5 and the spacer 16 are first
When the convex portion 18 which is the second fitting portion of the spacer 16 comes into contact with the concave portion 7 which is the first fitting portion of the shaft portion 5, the rotation between the shaft portion 51 and the spacer 16 It then stops and then rotates between the inner circumference taper 12 of the inner ball ring 11 and the outer circumference taper 17 of the spacer 16.
【００１８】更に、上記実施例では、ボールジョイント
１にかかる荷重が小さいときにはまず軸部５とスペーサ
１６との間で回動し、スペーサ１６の第二嵌合部である
凸部１８が軸部５の第一嵌合部である凹部７に接触する
と軸部５１とスペーサ１６間での回動は止まり、次いで
内球リング１１の内周テーパ１２とスペーサ１６の外周
テーパ１７との間で回動するが、軸部５とスペーサ１６
との間で回動した後にボールスタッド２の球頭部１３と
ベアリング５１との間で回動するようにしても良い。Further, in the above embodiment, when the load applied to the ball joint 1 is small, the ball joint 1 first rotates between the shaft portion 5 and the spacer 16 so that the convex portion 18 which is the second fitting portion of the spacer 16 forms the shaft portion. The rotation between the shaft portion 51 and the spacer 16 stops when it comes into contact with the concave portion 7 which is the first fitting portion of No. 5, and then it rotates between the inner peripheral taper 12 of the inner ball ring 11 and the outer peripheral taper 17 of the spacer 16. It moves, but shaft 5 and spacer 16
It is also possible to rotate between the ball head 13 of the ball stud 2 and the bearing 51 after the rotation of the ball stud 2.
【００１９】[0019]
【発明の効果】以上のように本発明によれば、略球状の
球頭部と球頭部を中心に同軸上に突出する軸部とを有す
るボールスタッドと、ボールスタッドの球頭部と同一曲
率の内曲面を有し球頭部を包持するベアリングと、ベア
リングを保持する略円筒状のハウジングとからなるボー
ルジョイントにおいて、ボールスタッドは、外周に略半
球状の外曲面を有し内周にボールスタッドの軸線方向中
央から端部方向に向かって漸次拡径する内周テーパを有
する一対の内球リングと、内球リングの内周テーパと係
合する外周テーパを有するスペーサと、スペーサの内周
側に配置される円柱状又は円筒状の軸部とを備え、軸部
の外周面には第一嵌合部である凸部または凹部、スペー
サの内周面には第二嵌合部である凹部または凸部が形成
され、第一嵌合部と第二嵌合部は嵌合状態で径方向に空
間が形成されているため、ボールジョイントに回転方向
の力が加わったとき、通常の走行時のようにボールジョ
イントにかかる荷重が小さいときには回転トルクの低い
軸部とスペーサとの間で回動されるため乗り心地が良
く、悪路走行時のようにボールジョイントにかかる荷重
が大きいときには、軸部とスペーサとの間に加え、回転
トルクの高い内球リングの内周テーパとスペーサの外周
テーパとの間で回動されるため、操縦安定性が良く、運
転者及び同乗者が快適である。As described above, according to the present invention, a ball stud having a substantially spherical ball head and a shaft portion projecting coaxially around the ball head, and the ball head of the ball stud are the same. In a ball joint consisting of a bearing having an inner curved surface with a curvature and enclosing a spherical head, and a substantially cylindrical housing that holds the bearing, the ball stud has an outer curved surface of a substantially hemispherical shape on the outer circumference. A pair of inner spherical rings having an inner peripheral taper whose diameter gradually increases from the axial center of the ball stud toward the end, a spacer having an outer peripheral taper that engages with the inner peripheral taper of the inner spherical ring, A cylindrical or cylindrical shaft portion arranged on the inner peripheral side, a convex portion or a concave portion which is the first fitting portion on the outer peripheral surface of the shaft portion, and a second fitting portion on the inner peripheral surface of the spacer. The first fitting portion is formed with a concave portion or a convex portion that is Since the second fitting part has a space in the radial direction in the fitted state, when the force in the rotation direction is applied to the ball joint, and when the load applied to the ball joint is small as in normal running, the rotational torque is Since it is rotated between the shaft and the spacer, the ride comfort is good, and when the load applied to the ball joint is large, such as when traveling on a bad road, the rotational torque is high between the shaft and the spacer. Since the inner spherical ring is rotated between the inner peripheral taper and the outer peripheral taper of the spacer, the steering stability is good and the driver and the passengers are comfortable.
【００２０】また同様に、略球状の球頭部と球頭部を中
心に同軸上に突出する軸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と同一曲率の内曲面を有し
球頭部を包持するベアリングと、ベアリングを保持する
略円筒状のハウジングとからなるボールジョイントにお
いて、ボールスタッドは、その球頭部が、外周に略半球
状の外曲面を有し内周にボールスタッドの軸線方向中央
から端部方向に向かって漸次縮径する内周テーパを有す
る一対の内球リングと、内球リングの内周テーパと係合
する外周テーパを有するスペーサと、スペーサの内周側
に配置される円柱状の軸部とを備え、軸部の外周面には
第一嵌合部である凸部または凹部、スペーサの内周面に
は第二嵌合部である凹部または凸部が形成され、第一嵌
合部と第二嵌合部が嵌合したときに径方向に空間が形成
されている構造においても、通常の走行時のようにボー
ルジョイントにかかる荷重が小さいときには回転トルク
の低い軸部とスペーサとの間で回動されるため乗り心地
が良く、悪路走行時のようにボールジョイントにかかる
荷重が大きいときには、軸部とスペーサとの間に加え、
回転トルクの高い内球リングの内周テーパとスペーサの
外周テーパとの間で回動されるため、操縦安定性が良
く、運転者及び同乗者が快適である。Similarly, a ball stud having a substantially spherical ball head and a shaft portion coaxially projecting around the ball head, and a ball having an inner curved surface having the same curvature as the ball head of the ball stud. In a ball joint consisting of a bearing that encloses the head and a substantially cylindrical housing that holds the bearing, a ball stud has a ball head with a substantially hemispherical outer curved surface on the outer circumference and a ball on the inner circumference. A pair of inner spherical rings having an inner peripheral taper that gradually decreases in diameter from the axial center of the stud toward the end, a spacer having an outer peripheral taper that engages with the inner peripheral taper of the inner spherical ring, and an inner peripheral surface of the spacer. And a cylindrical shaft portion disposed on the side, the outer peripheral surface of the shaft portion is a convex portion or a concave portion that is the first fitting portion, and the inner peripheral surface of the spacer is a concave portion or a convex portion that is the second fitting portion. Part is formed, and the first fitting part and the second fitting part are Even in a structure in which a space is formed in the radial direction when fitted, when the load applied to the ball joint is small, such as during normal traveling, the shaft is rotated between the shaft and the spacer, which have low rotational torque, so It is comfortable, and when the load on the ball joint is large, such as when driving on rough roads, add it between the shaft and spacer,
Since it is rotated between the inner peripheral taper of the inner ball ring having a high rotational torque and the outer peripheral taper of the spacer, the steering stability is good and the driver and passengers are comfortable.
【図１】本発明の実施例によるボールジョイントを表す
断面平面図である。FIG. 1 is a sectional plan view showing a ball joint according to an embodiment of the present invention.
【図２】本発明の実施例によるボールジョイントの構成
要件であるボールスタッドを表す断面平面図である。FIG. 2 is a sectional plan view showing a ball stud which is a constituent feature of the ball joint according to the embodiment of the present invention.
【図３】図１のＡ−Ａにおける軸部とスペーサの断面図
である。3 is a cross-sectional view of a shaft portion and a spacer taken along the line AA in FIG.
【図４】本発明の実施例によるボールスタッドを組付け
る工程を表す断面平面図である。FIG. 4 is a sectional plan view showing a process of assembling the ball stud according to the embodiment of the present invention.
【図５】本発明の実施例によるボールジョイントを組付
ける工程を表す断面平面図である。FIG. 5 is a sectional plan view showing a process of assembling the ball joint according to the embodiment of the present invention.
【図６】本発明の他の実施例によるボールジョイントを
表す断面平面図である。FIG. 6 is a sectional plan view showing a ball joint according to another embodiment of the present invention.
【図７】従来のボールジョイントを表す断面平面図であ
る。FIG. 7 is a cross-sectional plan view showing a conventional ball joint.
２ ボールスタッド ３ 球頭部 ５ 軸部 ６ 第一嵌合部 １１ 内球リング １２ 内周テーパ １３ 外曲面 １６ スペーサ １７ 外周テーパ １８ 第二嵌合部 ５１ ベアリング ５２ 内曲面 ７１ ハウジング Ｓ 空間 2 ball studs 3 ball head 5 shafts 6 First fitting part 11 Inner sphere ring 12 Inner circumference taper 13 outer curved surface 16 spacers 17 Outer taper 18 Second fitting part 51 bearing 52 Inner curved surface 71 housing S space
Claims (2)
を中心に同軸上に突出する軸部（５）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
（３）と同一曲率の内曲面（５２）を有し球頭部（３）
を包持するベアリング（５１）と、該ベアリング（５
１）を保持する略円筒状のハウジング（７１）とからな
るボールジョイントにおいて、前記ボールスタッド
（２）は、外周に略半球状の外曲面（１３）を有し内周
にボールスタッド（２）の軸線方向中央から端部方向に
向かって漸次拡径する内周テーパ（１２）を有する一対
の内球リング（１１）と、該内球リング（１１）の内周
テーパ（１２）と係合する外周テーパ（１７）を有する
スペーサ（１６）と、該スペーサ（１６）の内周側に配
置される円柱状又は円筒状の軸部（５）とを備え、前記
軸部（５）の外周面には第一嵌合部（７）である凸部ま
たは凹部、前記スペーサ（１６）の内周面には第二嵌合
部（１８）である凹部または凸部が形成され、前記第一
嵌合部（７）と前記第二嵌合部（１８）は嵌合状態で径
方向に空間（Ｓ）が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 substantially spherical ball head (3) and the ball head (3)
A ball stud (2) having a shaft portion (5) coaxially projecting with respect to the ball, and an inner curved surface (52) having the same curvature as the ball head (3) of the ball stud (2). Division (3)
A bearing (51) for enclosing the
In a ball joint comprising a substantially cylindrical housing (71) for holding 1), the ball stud (2) has a substantially hemispherical outer curved surface (13) on the outer circumference and a ball stud (2) on the inner circumference. A pair of inner spherical rings (11) having an inner peripheral taper (12) that gradually expands in diameter from the center of the axial direction toward the end, and engages with the inner peripheral taper (12) of the inner spherical ring (11). A spacer (16) having an outer peripheral taper (17) and a cylindrical or cylindrical shaft portion (5) arranged on the inner peripheral side of the spacer (16), and the outer periphery of the shaft portion (5). A convex portion or a concave portion which is the first fitting portion (7) is formed on the surface, and a concave portion or a convex portion which is the second fitting portion (18) is formed on the inner peripheral surface of the spacer (16). The fitting portion (7) and the second fitting portion (18) form a space (S) in the radial direction in a fitted state. Ball joint, characterized in that it is.
を中心に同軸上に突出する軸部（５）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
（３）と同一曲率の内曲面（５２）を有し球頭部（３）
を包持するベアリング（５１）と、該ベアリング（５
１）を保持する略円筒状のハウジング（７１）とからな
るボールジョイントにおいて、前記ボールスタッド
（２）は、その球頭部が、外周に略半球状の外曲面（１
３）を有し内周にボールスタッド（２）の軸線方向中央
から端部方向に向かって漸次縮径する内周テーパ（１
２）を有する一対の内球リング（１１）と、該内球リン
グ（１１）の内周テーパ（１２）と係合する外周テーパ
（１７）を有するスペーサ（１６）と、該スペーサ（１
６）の内周側に配置される円柱状又は円筒状の軸部
（５）とを備え、前記軸部（５）の外周面には第一嵌合
部（７）である凸部または凹部、前記スペーサ（１６）
の内周面には第二嵌合部（１８）である凹部または凸部
が形成され、前記第一嵌合部（７）と前記第二嵌合部
（１８）は嵌合状態で径方向に空間（Ｓ）が形成されて
いることを特徴とするボールジョイント。2. A substantially spherical ball head (3) and the ball head (3)
A ball stud (2) having a shaft portion (5) coaxially projecting with respect to the ball, and an inner curved surface (52) having the same curvature as the ball head (3) of the ball stud (2). Division (3)
A bearing (51) for enclosing the
In a ball joint comprising a substantially cylindrical housing (71) holding (1), the ball stud (2) has a spherical head whose outer surface is a substantially hemispherical outer surface (1).
3) having an inner peripheral taper (1) whose inner periphery has a diameter gradually decreasing from the center of the ball stud (2) in the axial direction toward the end.
A spacer (16) having a pair of inner spherical rings (11) having (2) and an outer peripheral taper (17) engaging with an inner peripheral taper (12) of the inner spherical rings (11);
6) a columnar or cylindrical shaft portion (5) arranged on the inner peripheral side, and a convex portion or a concave portion which is the first fitting portion (7) on the outer peripheral surface of the shaft portion (5). , The spacer (16)
A concave portion or a convex portion which is the second fitting portion (18) is formed on the inner peripheral surface of the first fitting portion (7) and the second fitting portion (18) in the fitted state in the radial direction. A ball joint characterized in that a space (S) is formed in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001393406A JP2003194038A (en) | 2001-12-26 | 2001-12-26 | Ball joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001393406A JP2003194038A (en) | 2001-12-26 | 2001-12-26 | Ball joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003194038A true JP2003194038A (en) | 2003-07-09 |
Family
ID=27600412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001393406A Pending JP2003194038A (en) | 2001-12-26 | 2001-12-26 | Ball joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003194038A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011052882A2 (en) * | 2009-10-28 | 2011-05-05 | 주식회사 센트랄 | Cross-axis ball joint |
| CN112013029A (en) * | 2019-05-31 | 2020-12-01 | 纳博特斯克有限公司 | Bearing assembling part structure of rotary equipment |
-
2001
- 2001-12-26 JP JP2001393406A patent/JP2003194038A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011052882A2 (en) * | 2009-10-28 | 2011-05-05 | 주식회사 센트랄 | Cross-axis ball joint |
| WO2011052882A3 (en) * | 2009-10-28 | 2011-06-23 | 주식회사 센트랄 | Cross-axis ball joint |
| CN112013029A (en) * | 2019-05-31 | 2020-12-01 | 纳博特斯克有限公司 | Bearing assembling part structure of rotary equipment |
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