JPH0541364Y2 - - Google Patents
Info
- Publication number
- JPH0541364Y2 JPH0541364Y2 JP6145487U JP6145487U JPH0541364Y2 JP H0541364 Y2 JPH0541364 Y2 JP H0541364Y2 JP 6145487 U JP6145487 U JP 6145487U JP 6145487 U JP6145487 U JP 6145487U JP H0541364 Y2 JPH0541364 Y2 JP H0541364Y2
- Authority
- JP
- Japan
- Prior art keywords
- displacement
- spring plate
- bright spot
- measured
- lower arm
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 30
- 238000003384 imaging method Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Testing Of Balance (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、自動車等の車両の車輪のアンバラン
ス修正に用いるロアアーム等のばね下構成部材の
変位検出装置に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a displacement detection device for an unsprung component such as a lower arm used to correct unbalance of wheels of a vehicle such as an automobile.
（従来の技術）
本願出願人は、先に特願昭60−142627号によ
り、車体に懸架される車輪を回転ドラム中で回転
させつつ、ロアアームの前後方向や上下方向の変
位を光学式の変位検出器で検出し、その変位の変
化からロアアームの振幅を求めて、車輪のアンバ
ランス量を計測するようにしたものを提案した。(Prior Art) The applicant of the present application previously disclosed in Japanese Patent Application No. 60-142627 that while the wheels suspended on the vehicle body are rotated in a rotating drum, the longitudinal and vertical displacements of the lower arm can be measured using an optical displacement method. We proposed a system that measures the unbalance of the wheel by detecting it with a detector and determining the amplitude of the lower arm from the change in displacement.
この変位検出器は、被測定物に光線を照射して
輝点を形成する光源と、この輝点を結像させる複
数の受光素子を列設した結像部とを備え、該結像
部を光源の光軸に対し斜交させて、該変出器から
の被測定物の距離の変位を結像部における輝点位
置の変位として検出すべく構成されている。 This displacement detector includes a light source that irradiates the object to be measured with a light beam to form a bright spot, and an imaging section that has a plurality of light-receiving elements arranged in a row to form an image of the bright spot. The transducer is arranged obliquely to the optical axis of the light source, and is configured to detect the displacement of the distance of the object to be measured from the transducer as the displacement of the bright spot position in the imaging section.
（考案が解決しようとする問題点）
ロアアーム等のばね下構成部材は、鍛造や鋳造
により成形されるため、面粗度が悪く、光源から
の光線が表面で広範囲に散乱されて、結像部に結
像される輝点の明度が低下し、変位を正確に測定
することが困難になる問題があつた。(Problem that the invention aims to solve) Since unsprung components such as the lower arm are formed by forging or casting, the surface roughness is poor, and the light rays from the light source are scattered over a wide range on the surface, causing the imaging area to There was a problem in that the brightness of the bright spot imaged in the image decreased, making it difficult to accurately measure displacement.
本考案は、かかる問題点を解決した装置を提供
することをその目的とする。 The object of the present invention is to provide an apparatus that solves these problems.
（問題点を解決するための手段）
本考案は、上記目的を達成すべく、被測定物に
光線を照射して輝点を形成する光源と、この輝点
を結像させる複数の受光素子を列設した結像部と
を備える変位検出器により車両のばね下構成部材
の変位を検出する装置において、直交３軸方向に
移動可能な支持台にばね下構成部材の被測定面に
弾接可能なばね板を固設し、該支持台に該ばね板
に対向させて該変位検出器を取付けたことを特徴
とする。(Means for Solving the Problems) In order to achieve the above object, the present invention uses a light source that irradiates a measured object with a light beam to form a bright spot, and a plurality of light receiving elements that form an image of the bright spot. In a device that detects the displacement of an unsprung component of a vehicle using a displacement detector equipped with a row of imaging units, a support base movable in three orthogonal axes can be brought into elastic contact with the surface to be measured of the unsprung component. The present invention is characterized in that a spring plate is fixedly installed, and the displacement detector is mounted on the support stand facing the spring plate.
（作用）
ばね板の表面に変位検出器の光源からの光線に
よる輝点が形成され、面粗度の良いばね板表面か
らの反射光で結像部に明度の高い輝点が結像され
る。ここで、ばね板は自己の弾力でばね下構成部
材に密着した状態でこれと一体に変位し、かくて
ばね板からの反射光による結像部の輝点位置の変
化からばね下構成部材の変位を正確に検出でき
る。(Operation) A bright spot is formed on the surface of the spring plate by the light rays from the light source of the displacement detector, and a bright spot with high brightness is imaged in the imaging area by the reflected light from the surface of the spring plate with good surface roughness. . Here, the spring plate is in close contact with the unsprung component due to its own elasticity and is displaced together with the unsprung component, so that the position of the bright spot in the imaging section changes due to the light reflected from the spring plate. Displacement can be detected accurately.
（実施例）
第１図乃至第３図を参照して、１は自動車の車
体に懸架される車輪ａを載置する回転ドラム、２
は車輪ａに貼着した反射テープa1と協働して車輪
ａの回転位相を検出する光電管から成る位相検出
器、３はばね下構成部材たるロアアームｂの前後
方向の変位を検出する変位検出器を示し、車輪ａ
を回転ドラム１上で一定速度で回転させたときの
ロアアームｂの前後振幅を該変位検出器３で検出
される変位の変化から計測し、車輪ａの重量アン
バランスを測定するようにした。(Example) Referring to FIGS. 1 to 3, 1 is a rotary drum on which wheels a suspended on the body of an automobile are placed; 2
1 is a phase detector consisting of a phototube that detects the rotational phase of wheel a in cooperation with reflective tape a attached to wheel a; 3 is a displacement detector that detects the longitudinal displacement of lower arm b, which is an unsprung component. wheel a
When the wheel is rotated at a constant speed on the rotating drum 1, the longitudinal amplitude of the lower arm b is measured from the change in displacement detected by the displacement detector 3, and the weight imbalance of the wheel a is measured.
該変位検出器３は、被測定物に光線を照射して
輝点を形成する光源３ａと、この輝点を結像させ
る複数の受光素子を列設した結像部３ｂとを備
え、該結像部３ｂを該光源３ａの光軸に対し斜光
させて、被測定物の光軸方向の変位を該結像部３
ｂにおける輝点位置の変化として検出するように
した従来公知のものであり、前記回転ドラム１の
配置部内側に上下前後左右の直交３軸方向に移動
可能な支持台４を設けて、該支持台４上に、ロア
アームｂの被測定面たる前面又は後面に弾接可能
なばね板５と該ばね板５に対向させて該変位検出
器３とを取付けた。 The displacement detector 3 includes a light source 3a that irradiates the object to be measured with a light beam to form a bright spot, and an imaging section 3b that has a plurality of light receiving elements arranged in a row to form an image of the bright spot. The image part 3b is made to emit light obliquely with respect to the optical axis of the light source 3a, and the displacement of the object to be measured in the optical axis direction is measured by the image part 3.
This is a conventionally known device that detects the change in the position of the bright spot at point b, and a support base 4 movable in three orthogonal axes directions of up, down, front, back, left and right is provided inside the arrangement part of the rotating drum 1. On the stand 4, a spring plate 5 which can come into elastic contact with the front or rear surface of the lower arm b to be measured, and the displacement detector 3 are mounted opposite the spring plate 5.
これを更に詳述するに、回転ドラム１の配置部
内側に機枠６を立設して、該機枠６にシリンダ７
ａによりガイドレール７ｂに沿つて上下動される
第１テーブル７を設けると共に、該第１テーブル
７上にシリンダ８ａによりガイドレール８ｂに沿
つて前後動される第２テーブル８と、該第２テー
ブル８上にハンドル９ａ付きのボールねじ９ｂに
より左右動される第３テーブル９とを設け、該第
３テーブル９上に前記支持台４を搭載して、該支
持台４上の挾持片４ａ，４ａに横方向外方にのび
るばね板５をその尾端部において固定すると共
に、該支持台４から横方向外方にのびるステー４
ｂに該ばね板５の先端部に対し前後方向に対向さ
せて前記変位検出器３とを取付けるものとした。 To explain this in more detail, a machine frame 6 is installed upright inside the arrangement part of the rotating drum 1, and a cylinder 7 is mounted on the machine frame 6.
A first table 7 is provided which is moved up and down along a guide rail 7b by a cylinder 8a, and a second table 8 which is moved back and forth along a guide rail 8b by a cylinder 8a is provided on the first table 7. A third table 9 that can be moved left and right by a ball screw 9b with a handle 9a is provided on the third table 9. A spring plate 5 extending laterally outward is fixed at its tail end, and a stay 4 extending laterally outward from the support base 4 is fixed at its tail end.
The displacement detector 3 is attached to the tip of the spring plate 5 so as to face the tip of the spring plate 5 in the front-rear direction.
又、該第１テーブル７には、その上昇位置を調
節するアジヤストスクリユー７ｃを取付けて、そ
の調整によりばね板５とロアアームｂとの高さ位
置を合わせられるようにし、又該第２テーブル８
は、第１テーブル７の側部に取付けた微調節ハン
ドル８ｃにピニオン８ｄを介して連動するラツク
８ｅを備えるものとし、該ハンドル８ｃにより該
第２テーブル８を前記ばね板５がロアアームｂの
被測定面に適正な圧接力で弾接されるように微動
させ、この位置で該第２テーブル８の前進が停止
されるように第１テーブル７に設けた第２テーブ
ル８の前進ストツパ用のガイドスクリユー８ｆを
調節し、又該第２テーブル８に設けた後退位置設
定用のアジヤストスクリユー８ｇの調節で該第２
テーブル８の上昇時にばね板５がロアアームｂに
干渉しないようその後退位置を設定するように
し、更に第３テーブル９にこれを第２テーブル８
に対し固定するロツクハンドル９ｃを設け、前記
ボールねじ９ｂによりばね板５とロアアームｂと
の横方向位置が合致するように該第３テーブル９
の位置を調節した後、該位置に該ロツクハンドル
９ｃで該第３テーブル９を固定するようにした。 An adjuster screw 7c for adjusting the raised position of the first table 7 is attached to the first table 7 so that the height positions of the spring plate 5 and the lower arm b can be adjusted by adjusting the adjuster screw 7c. 8
is equipped with a rack 8e that is interlocked with a fine adjustment handle 8c attached to the side of the first table 7 via a pinion 8d, and the handle 8c allows the second table 8 to be adjusted so that the spring plate 5 is A guide for the forward movement stopper of the second table 8 provided on the first table 7 so as to be slightly moved so as to come into elastic contact with the measuring surface with an appropriate pressure contact force, and to stop the forward movement of the second table 8 at this position. By adjusting the screw 8f and adjusting the adjusting screw 8g for setting the retreat position provided on the second table 8, the second table 8 can be adjusted.
The retracted position of the spring plate 5 is set so that it does not interfere with the lower arm b when the table 8 rises, and the third table 9 is moved to the second table 8.
A lock handle 9c is provided to be fixed to the third table 9, and the third table 9 is arranged so that the horizontal positions of the spring plate 5 and the lower arm b coincide with each other by the ball screw 9b.
After adjusting the position, the third table 9 is fixed at the position using the lock handle 9c.
又、前記支持台４を、第３テーブル９に対し垂
直軸４ｃを中心にして一定角度範囲で旋回調節自
在とし、ばね板５のロアアームｂに対する当り角
を適正に調節し得るようにした。 Further, the support stand 4 is rotatably adjustable within a certain angle range about the vertical axis 4c with respect to the third table 9, so that the contact angle of the spring plate 5 with respect to the lower arm b can be appropriately adjusted.
図面で７ｄは機枠６に設けた第１テーブル７用
のクランプシリンダ、８ｈは第１テーブル７に設
けた第２テーブル８用のクランプシリンダを示
す。 In the drawing, 7d indicates a clamp cylinder for the first table 7 provided on the machine frame 6, and 8h indicates a clamp cylinder for the second table 8 provided on the first table 7.
次に上記実施例の作用を説明する。 Next, the operation of the above embodiment will be explained.
車輪ａを回転ドラム１に載置した後、第１テー
ブル７を上昇位置に上昇させ、次いで第２テーブ
ル８を前進位置に前進させて、ばね板５をロアア
ームｂの被測定面に弾接させ、この状態で車輪ａ
を一定速度で回転させる。この場合、車輪ａがア
ンバランスであると、ロアアームｂが前後方向に
振動し、ロアアームｂに弾接するばね板５もこれ
と一体に前後方向に振動する。 After placing the wheel a on the rotating drum 1, the first table 7 is raised to the raised position, and then the second table 8 is advanced to the forward position, and the spring plate 5 is brought into elastic contact with the surface to be measured of the lower arm b. , in this state wheel a
rotate at a constant speed. In this case, if the wheel a is unbalanced, the lower arm b vibrates in the front-rear direction, and the spring plate 5 that comes into elastic contact with the lower arm b also vibrates in the front-rear direction together with the lower arm b.
この際、ばね板５の表面にはこれに対向する変
位検出器３の光源３ａからの光線による輝点が形
成され、該ばね板５からの反射光により該検出器
３の結像部３ｂに明度の高い輝点が結像され、こ
の輝点位置の変化から該ばね板５、即ちこれと一
体に動くロアアームｂの前後方向の変位が検出さ
れる。 At this time, a bright spot is formed on the surface of the spring plate 5 by the light beam from the light source 3a of the displacement detector 3 facing the spring plate, and the reflected light from the spring plate 5 forms an image forming part 3b of the detector 3. A bright spot is imaged, and from the change in the position of the bright spot, the longitudinal displacement of the spring plate 5, that is, the lower arm b, which moves together with the spring plate 5, is detected.
（考案の効果）
以上の如く本考案によるときは、面粗度の良い
ばね板をばね下構成部材に弾接させ、該ばね板か
らの反射光により変位検出器の結像部に明度の高
い輝点を結像し得るようにしたもので、ばね下構
成部材の変位を該ばね板を介して正確に検出で
き、且つ構造簡単にして安価に得られる効果を有
する。(Effects of the invention) As described above, according to the invention, a spring plate with good surface roughness is brought into elastic contact with the unsprung component, and the reflected light from the spring plate provides a highly bright image to the imaging area of the displacement detector. The device is designed to image a bright spot, and has the advantage that the displacement of the unsprung component can be accurately detected via the spring plate, and the structure is simple and inexpensive.
第１図は本案装置の１例の正面図、第２図はそ
の側面図、第３図はその平面図である。
ｂ……ロアアーム（ばね下構成部材）、３……
変位検出器、４……支持台、５……ばね板。
FIG. 1 is a front view of an example of the present device, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof. b...Lower arm (unsprung component), 3...
Displacement detector, 4... Support stand, 5... Spring plate.
Claims (1)
と、この輝点を結像させる複数の受光素子を列設
した結像部とを備える変位検出器により車両のば
ね下構成部材の変位を検出する装置において、直
交３軸方向に移動可能な支持台にばね下構成部材
の被測定面に弾接可能なばね板を固設し、該支持
台に該ばね板に対向させて該変位検出器を取付け
たことを特徴とする車両のばね下構成部材の変位
検出装置。 A displacement detector equipped with a light source that irradiates a measured object with a light beam to form a bright spot, and an imaging section with a plurality of light receiving elements arranged in a row that forms an image of the bright spot can detect the displacement of the unsprung component of the vehicle. In a device for detecting displacement, a spring plate that can come into elastic contact with the surface to be measured of an unsprung component is fixed to a support base movable in three orthogonal axes directions, and the support base is placed opposite to the spring plate to detect the displacement. A displacement detection device for an unsprung component of a vehicle, characterized in that a detector is attached.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6145487U JPH0541364Y2 (en) | 1987-04-24 | 1987-04-24 | |
| US07/184,563 US4864858A (en) | 1987-04-24 | 1988-04-21 | Wheel unbalance correction method and wheel unbalance detecting apparatus |
| GB8809591A GB2205413B (en) | 1987-04-24 | 1988-04-22 | Correcting wheel out-of-balance |
| CA000564927A CA1320649C (en) | 1987-04-24 | 1988-04-22 | Wheel unbalance correction method and wheel unbalance detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6145487U JPH0541364Y2 (en) | 1987-04-24 | 1987-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63168803U JPS63168803U (en) | 1988-11-02 |
| JPH0541364Y2 true JPH0541364Y2 (en) | 1993-10-20 |
Family
ID=30894809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6145487U Expired - Lifetime JPH0541364Y2 (en) | 1987-04-24 | 1987-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0541364Y2 (en) |
-
1987
- 1987-04-24 JP JP6145487U patent/JPH0541364Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63168803U (en) | 1988-11-02 |
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