JPH0781580B2 - Ball joint - Google Patents
Ball jointInfo
- Publication number
- JPH0781580B2 JPH0781580B2 JP14091086A JP14091086A JPH0781580B2 JP H0781580 B2 JPH0781580 B2 JP H0781580B2 JP 14091086 A JP14091086 A JP 14091086A JP 14091086 A JP14091086 A JP 14091086A JP H0781580 B2 JPH0781580 B2 JP H0781580B2
- Authority
- JP
- Japan
- Prior art keywords
- wear
- ball joint
- transmitter
- battery
- closing plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Pivots And Pivotal Connections (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、例えば自動車懸架装置等に使用されるボール
ジョイントに係り、該ボールジョイント内部の摩耗情報
を間欠電波発信す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, an automobile suspension system, and more particularly to a ball joint that intermittently transmits wear information inside the ball joint.
従来の技術 ボールジョイントの内部摩耗を感知して警報器を附勢す
る従来技術としては、特公昭58−18526号の如く、ボー
ルジョイントに装着した摩耗検出手段により検出した変
化を該摩耗検出手段に接続された配線により運転席の近
傍に設置した警報器に伝達するものがある。2. Description of the Related Art As a conventional technique for detecting an internal wear of a ball joint and energizing an alarm device, a change detected by a wear detection means mounted on a ball joint is applied to the wear detection means as in Japanese Patent Publication No. 58-18526. There is a wire connected to an alarm installed near the driver's seat.
発明が解決しようとする問題点 上記ボールジョイントに直接配線を施すものは、自動車
走行中の飛石の衝突や障害物との接触により断線され易
い欠点があった。Problems to be Solved by the Invention The above-mentioned ball joint having direct wiring has a drawback that it is easily broken due to collision of flying stones or contact with obstacles while the vehicle is running.
そこで、ボールジョイントに摩耗検出器と摩耗検出器の
出力を受けて所定の電波信号を間欠出力する送信器およ
びこれらに電気エネルギを供給するバッテリとを装着す
ることも考えられるが、信号を連続発信させるとバッテ
リ寿命がボールジョイント寿命より短かくなる欠点があ
る。Therefore, it is conceivable to attach a wear detector to the ball joint and a transmitter that receives the output of the wear detector and intermittently outputs a predetermined radio signal, and a battery that supplies electric energy to these, but it is possible to transmit signals continuously. If so, the battery life becomes shorter than the ball joint life.
この点、バッテリを大型にすれば寿命を満足させ得る
が、ボールジョイントの機能上このような大型バッテリ
の装着は不可能であるという問題があった。In this respect, if the battery is made large, the life can be satisfied, but there is a problem that such a large battery cannot be attached due to the function of the ball joint.
問題点を解決するための手段 ボールジョイント内部摩耗を感知する摩耗検出機と、そ
の摩耗検出機の出力を受けて所定の電波信号を間欠出力
する送信器および前記両者を間欠的に作動させる作動制
御装置と、これらに電気エネルギを供給するバッテリと
を該ボールジョイントに一体に装着し、もって前記発信
器からボールジョイント摩耗情報を間欠的に電波発信さ
せる。Means for Solving the Problems A wear detector for detecting internal wear of a ball joint, a transmitter for intermittently outputting a predetermined radio signal in response to the output of the wear detector, and an operation control for intermittently operating the both. A device and a battery for supplying electric energy to these devices are integrally attached to the ball joint, so that the ball joint wear information is intermittently transmitted from the transmitter.
作用 摩耗検出器と送信器の間欠作動によりバッテリエネルギ
の消費が節約され、バッテリ寿命が増大すると共に、バ
ッテリの小型化が可能となる。Action Intermittent operation of the wear detector and transmitter saves battery energy consumption, increases battery life and allows battery miniaturization.
実施例 以下本発明の実施例を図面に基づいて説明する。Embodiments Embodiments of the present invention will be described below with reference to the drawings.
第1図は、自動車のフロントサスペンションに用いられ
るロアーボールジョイント1を表している。FIG. 1 shows a lower ball joint 1 used for a front suspension of an automobile.
このボールジョイント1は、スタッド3、ソケット2、
荷重支持軸受7、摩耗補償軸受8、閉止板10を具備して
いる。This ball joint 1 has studs 3, sockets 2,
It is provided with a load supporting bearing 7, a wear compensating bearing 8 and a closing plate 10.
ソケット2は円筒状で両端に開口を有し、その一方の開
口は閉止板10で閉鎖され、他方の開口6はスタッドの柄
部4を揺動自在に突出させている。閉止板10は、ステン
レス製またはアルミ合金など剛性のある非磁性材料によ
って形成されている。The socket 2 is cylindrical and has openings at both ends. One of the openings is closed by a closing plate 10, and the other opening 6 allows the handle 4 of the stud to swing freely. The closing plate 10 is made of a rigid non-magnetic material such as stainless steel or aluminum alloy.
スタッド3は、柄部4の一端に球状の頭部5を有する。The stud 3 has a spherical head 5 at one end of the handle 4.
スタッドの頭部5は、柄部側の半部が荷重支持軸受7に
よって支持され、反柄部側の半部が摩耗補償軸受8によ
って支持された状態でソケット2内に配置される。The head portion 5 of the stud is arranged in the socket 2 in a state in which a half portion on the handle portion side is supported by the load supporting bearing 7 and a half portion on the opposite handle portion side is supported by the wear compensation bearing 8.
しかも頭部5は摩耗補償軸受8と共に、閉止板10の装着
で圧縮されたラバーの如き弾性材料からなる押上げ環16
により、ソケット開口6に向けて常に押圧されている。Moreover, the head 5 together with the wear compensating bearing 8 is a push-up ring 16 made of an elastic material such as rubber compressed by mounting the closing plate 10.
Due to this, it is constantly pressed toward the socket opening 6.
そのためボールジョイント1使用中に頭部5或は軸受7,
8が摩耗すると、摩耗補償軸受8は、ソケット開口6に
接近する方向へ相対移動することになる。Therefore, while using the ball joint 1, the head 5 or bearing 7,
When 8 wears, the wear-compensating bearing 8 moves relatively in the direction of approaching the socket opening 6.
また、荷重支持軸受7及び摩耗補償軸受8は、ナイロ
ン,ポリエチレン,ポリアセタールおよびポリウレタン
など摩耗特性の優れた樹脂から適当に選ばれる。The load bearing 7 and the wear compensating bearing 8 are appropriately selected from resins having excellent wear characteristics such as nylon, polyethylene, polyacetal and polyurethane.
この摩耗補償軸受8の反球座面側の底面には、後述され
る永久磁石11が配設されている。この永久磁石11が形成
する磁場は、非磁性材料製の閉止板10の外にも広がって
いる。A permanent magnet 11 to be described later is arranged on the bottom surface of the wear compensation bearing 8 on the side opposite to the spherical bearing surface. The magnetic field formed by the permanent magnet 11 also spreads outside the closing plate 10 made of a non-magnetic material.
閉止板10は、ソケット開口周縁部が該閉止板10の上にか
しめ変形されて、ソケット開口に固定されている。The closing plate 10 is fixed to the socket opening by caulking and deforming the periphery of the socket opening onto the closing plate 10.
この閉止板10の反摩耗補償軸受側の側面には、前記永久
磁石11の磁力を感知する磁力感知装置12が、予め設定さ
れた所定の位置で永久磁石に対向するよう結合固定され
ている。A magnetic force sensing device 12 that senses the magnetic force of the permanent magnet 11 is fixedly coupled to the side surface of the closing plate 10 on the side opposite to the anti-wear compensating bearing so as to face the permanent magnet at a predetermined position.
永久磁石11と磁力感知装置12等は第3図の摩耗感知装置
の原理説明図に表される如く、摩耗検出器40を構成して
いる。The permanent magnet 11, the magnetic force sensing device 12 and the like constitute a wear detector 40 as shown in the principle explanatory diagram of the wear sensing device of FIG.
この磁力感知装置12としては、ホールICのほか磁性薄膜
型磁気センサなどの磁気センサを用いることができる。As the magnetic force sensing device 12, a magnetic sensor such as a magnetic thin film type magnetic sensor can be used in addition to the Hall IC.
また第3図において、36は送信器で摩耗検出器40の出力
を受けて所定の電波信号をアンテナ35から出力する。Further, in FIG. 3, reference numeral 36 is a transmitter which receives an output of the wear detector 40 and outputs a predetermined radio wave signal from the antenna 35.
31は作動制御装置で、摩耗検出器40と送信器36を間欠的
に作動させるため、例えば内蔵タイマにより前記両者を
1時間に1秒程度の短い時間作動させる。Reference numeral 31 denotes an operation control device, which operates the wear detector 40 and the transmitter 36 intermittently. For example, a built-in timer operates the both for a short time of about 1 second per hour.
29はバッテリで、作動制御装置31に電気エネルギを供給
するほか、作動制御装置31によりスイッチが閉じた時間
帯のみ摩耗検出器40と送信器36に電流を供給して、それ
らを作動させる。A battery 29 supplies electric energy to the operation control device 31, and also supplies electric current to the wear detector 40 and the transmitter 36 only in a time period when the switch is closed by the operation control device 31 to operate them.
第3図に示される摩耗検出器40の出力は、送信器36へ伝
達され、送信器36からは電波信号となって出力され、適
当に離間設置された所定の受信器41によって受信され
る。The output of the wear detector 40 shown in FIG. 3 is transmitted to the transmitter 36, is output as a radio wave signal from the transmitter 36, and is received by a predetermined receiver 41 that is appropriately installed.
受信器41は、受信信号によりモニタ38へボールジョイン
ト摩耗状況を送信する。モニタ38は例えば運転者の視覚
に電気光学効果を利用して摩耗状況を伝える。The receiver 41 transmits the ball joint wear status to the monitor 38 by the received signal. The monitor 38 conveys the wear state to the driver's eyes by using an electro-optical effect.
これら磁力感知装置12、作動制御装置31、送信器36、ア
ンテナ35および電池29は、合成樹脂製の殻30により被覆
保護され、かつ殻30と共に閉止板10の反摩耗補償軸受8
側面に一体に接着結合されている。The magnetic force sensing device 12, the operation control device 31, the transmitter 36, the antenna 35, and the battery 29 are covered and protected by a shell 30 made of synthetic resin, and together with the shell 30, an anti-wear compensation bearing 8 for the closing plate 10.
It is integrally adhesively bonded to the side surface.
また摩耗補償軸受8の反球座面側の底面には、発条保持
部材19が一体に突出形成されており、この発条保持部材
19の溝に密着巻きされたコイルバネなどからなる発条18
が装着されている。Further, a spring holding member 19 is integrally formed on the bottom surface of the wear compensation bearing 8 on the side opposite to the spherical seat surface.
Spring 18 consisting of a coil spring closely wound in the groove of 19
Is installed.
片持ち軸支されたこの発条18の先端には、永久磁石11を
接着結合した磁石保持部材17が装着されている。A magnet holding member 17 to which the permanent magnet 11 is adhesively bonded is attached to the tip of the spring 18 which is cantilevered.
閉止板10には、上記発条18を曲げるための突起20が形成
されている。この閉止板の突起20と発条18の関係につい
て第1図のII−II断面を表す第2図によって説明する。The closing plate 10 is provided with a protrusion 20 for bending the spring 18. The relationship between the protrusion 20 of the closing plate and the rib 18 will be described with reference to FIG. 2 showing the II-II cross section of FIG.
ボールジョイント1の組み立て途中において、閉止板10
適合前は発条18が第2図に二点鎖線に示す如く、直線的
と成っている。During assembly of the ball joint 1, the closing plate 10
Before the fitting, the spring 18 is straight as shown by the chain double-dashed line in FIG.
ここで閉止板10をソケット2の所定位置に、かつ円周方
向位相も正しく揃えて適合させ、ついで閉止板10に押上
げ環16を圧縮するような荷重を加えてソケット開口内周
に圧入すると、突起20の円錐状発端が発条18の保持部19
付近に当接して発条18を押し曲げる。If the closing plate 10 is fitted to the socket 2 at a predetermined position and the phases in the circumferential direction are properly aligned, and then a load for compressing the push-up ring 16 is applied to the closing plate 10 to press it into the inner circumference of the socket opening. , The conical shape of the protrusion 20 is the holding portion 19 of the rib 18.
Abut the neighborhood and push and bend the spring 18.
それによって磁石保持部材17は、時計廻りに移動し、永
久磁石11と共に、第2図に実線で示される如く位置する
ことになる。As a result, the magnet holding member 17 moves clockwise and is positioned with the permanent magnet 11 as shown by the solid line in FIG.
その後、閉止板10はソケット2に加締め固定される。After that, the closing plate 10 is fixed to the socket 2 by crimping.
なお本実施例においては、軸線方向の端面に異なる磁極
を共存させた永久磁石11を磁石保持部材17に装着し、磁
石保持部材17の移動により磁力感知装置12によって感知
される極性が入れ替わるように成っている。In this embodiment, the permanent magnet 11 in which different magnetic poles coexist on the end face in the axial direction is attached to the magnet holding member 17, and the polarity detected by the magnetic force sensing device 12 is switched by the movement of the magnet holding member 17. Made of
そのため、本実施例においては、第2図に二点鎖線で示
す如く発条18が略直線状に復元した状態において、磁力
感知装置12によって感知される極性が変化し、その状態
で比較器が異常摩耗として感知出力を出すように設定さ
れている。Therefore, in the present embodiment, the polarity sensed by the magnetic force sensing device 12 changes when the spring 18 is restored to a substantially straight line as shown by the chain double-dashed line in FIG. 2, and the comparator is abnormal in that state. It is set to output a sensing output as wear.
つぎに上記ボールジョイントにおける摩耗感知について
説明する。Next, wear detection in the ball joint will be described.
仮にボールジョイント1が使用中に異常摩耗を起こし、
第3図に示す如く押上げ環16がその弾発力で復元する
と、摩耗補償軸受8が押し上げられ、頭部5がソケット
開口6方向へ相対移動する。また同時に、発条18も突起
20先端の小径部と接触するかまたは非接触となり、曲が
りが解消される。If the ball joint 1 is abnormally worn during use,
As shown in FIG. 3, when the push-up ring 16 is restored by its elastic force, the wear-compensating bearing 8 is pushed up, and the head 5 relatively moves toward the socket opening 6. At the same time, the protrusion 18 also protrudes.
20 The contact with the small diameter part of the tip or the non-contact, the bending is eliminated.
そのため磁石保持部材17は、第2図に二点鎖線で示され
る如く反時計廻りに移動し、磁力感知装置12によって感
知される磁力の極性を反転せしめる。Therefore, the magnet holding member 17 moves counterclockwise as shown by the chain double-dashed line in FIG. 2, and reverses the polarity of the magnetic force sensed by the magnetic force sensing device 12.
それにより作動制御装置31のスイッチが閉じ磁力感知装
置12と送信器36にバッテリ29から電流が供給されたと
き、摩耗検出器40がボールジョイント異常摩耗を感知
し、送信器36からは異常摩耗を告げる信号が送信され
る。この電波信号を受信器41がアンテナ42で受け、モニ
タ38で異常を告げる。As a result, when the switch of the operation control device 31 is closed and current is supplied to the magnetic force sensing device 12 and the transmitter 36 from the battery 29, the wear detector 40 detects abnormal wear of the ball joint, and the transmitter 36 detects abnormal wear. A signaling signal is sent. The receiver 41 receives this radio signal with the antenna 42, and the monitor 38 reports an abnormality.
なお、モニタ38は、受信器41から送られた情報を次ぎの
情報が送られるまで保持する。The monitor 38 holds the information sent from the receiver 41 until the next information is sent.
効果 以上のように本発明によれば、摩耗検出器と送信器の間
欠作動によりバッテリエネルギの消費が節約され、バッ
テリ寿命が増大すると共に、バッテリの小型化が可能と
なるので、小型のバッテリーを装着して、摩耗情報自動
発信装置付きボールジョイントを大幅に小型化でき、こ
の種ボールジョイントの実用化を可能ならしめる。Effects As described above, according to the present invention, the intermittent operation of the wear detector and the transmitter saves the consumption of battery energy, increases the battery life, and enables the battery to be miniaturized. By mounting it, the ball joint with the automatic wear information transmitter can be significantly downsized, and this kind of ball joint can be put to practical use.
図面は本発明の実施例を表わすもので、第1図はボール
ジョイント(第2図のI−I断面を表わす)断面平面
図。第2図は第1図のII−II断面を表わす断面図。第3
図は摩耗感知装置の原理説明図である。 (記号の説明) 1……ボールジョイント。29……バッテリ。 31……作動制御装置。36……送信器。 40……摩耗検出器。The drawings show the embodiments of the present invention, and FIG. 1 is a sectional plan view of a ball joint (representing the I-I section of FIG. 2). 2 is a sectional view showing a II-II section of FIG. Third
The figure is an explanatory view of the principle of the wear detecting device. (Explanation of symbols) 1 ... Ball joint. 29 …… Battery. 31 …… Actuation control device. 36 …… Transmitter. 40 ... Wear detector.
Claims (1)
検出器40と、その摩耗検出器40の出力を受けて所定の電
波信号を間欠出力する送信器36および前記両者を間欠的
に作動させる作動制御装置31と、これらに電気エネルギ
を供給するバッテリ29とを該ボールジョイント1に一体
に装着したことを特徴とするボールジョイント。1. A wear detector 40 for detecting internal wear of a ball joint, a transmitter 36 which receives the output of the wear detector 40 and intermittently outputs a predetermined radio wave signal, and an operation control for intermittently operating both of them. A ball joint, characterized in that a device (31) and a battery (29) for supplying electric energy to them are integrally mounted on the ball joint (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14091086A JPH0781580B2 (en) | 1986-06-16 | 1986-06-16 | Ball joint |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14091086A JPH0781580B2 (en) | 1986-06-16 | 1986-06-16 | Ball joint |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62297526A JPS62297526A (en) | 1987-12-24 |
JPH0781580B2 true JPH0781580B2 (en) | 1995-08-30 |
Family
ID=15279658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14091086A Expired - Lifetime JPH0781580B2 (en) | 1986-06-16 | 1986-06-16 | Ball joint |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0781580B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4401639C2 (en) | 1994-01-21 | 1997-03-20 | Daimler Benz Ag | Ball joint |
US7048461B2 (en) * | 2002-09-20 | 2006-05-23 | Trw Inc. | Ball joint assembly with wear indication |
DE102005027826B3 (en) * | 2005-06-15 | 2007-01-18 | Zf Friedrichshafen Ag | Ball joint with sensor device and method for measuring wear |
-
1986
- 1986-06-16 JP JP14091086A patent/JPH0781580B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS62297526A (en) | 1987-12-24 |
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