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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7537407B2 (en) | Ball Joint | |
JP3855315B2 (en) | Manufacturing method of wheel bearing rolling bearing unit | |
US7510344B2 (en) | Joint structure of ball joint and arm | |
US7832939B2 (en) | Bearing apparatus for a wheel | |
JPH10181664A (en) | Hollow crankshaft unit for bicycle | |
JPH09164803A (en) | Driving wheel supporting hub unit | |
WO2006040897A1 (en) | Bearing device for wheel | |
JP2003074571A (en) | Srolling bearing unit for driving wheel and driving unit for car wheel | |
EP1277598A2 (en) | Wheel-use bearing apparatus | |
JP3533883B2 (en) | Hub unit for wheel support | |
US7891472B2 (en) | Suspension bearing | |
JP2003194038A (en) | Ball joint | |
JP2003056572A (en) | Bearing device | |
JP2008260435A (en) | Axle module for rear wheel | |
WO2006120787A1 (en) | Ball joint | |
JP2002225503A (en) | Method of producing hub unit for supporting wheel and pressing die for producing the same | |
JP2006105343A (en) | Bearing device for wheel | |
JP2002139023A (en) | Ball joint | |
JP2000145854A (en) | Suspension bushing | |
JPH0988993A (en) | Elastic shaft coupling | |
JP2600852Y2 (en) | Steering device | |
JP2005172142A (en) | Drive shaft | |
JP3973347B2 (en) | Connection structure of ball joint and arm | |
JPH10181304A (en) | Hub unit bearing for wheel | |
JPH0232889Y2 (en) |