JPS61292732A - Coordinate input device - Google Patents
Coordinate input deviceInfo
- Publication number
- JPS61292732A JPS61292732A JP60134236A JP13423685A JPS61292732A JP S61292732 A JPS61292732 A JP S61292732A JP 60134236 A JP60134236 A JP 60134236A JP 13423685 A JP13423685 A JP 13423685A JP S61292732 A JPS61292732 A JP S61292732A
- Authority
- JP
- Japan
- Prior art keywords
- component force
- strain
- input device
- coordinate input
- component
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ディスプレイ面上方に透明なパネルを取り
付け、ディスプレイの指示等にしたがって前記パネルの
一点を指等で押して操作者の指示を入力するだめの座標
入力装置tに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a transparent panel attached above a display surface, and an operator's instruction inputted by pressing a point on the panel with a finger or the like according to instructions on the display. This relates to a useless coordinate input device t.
従来、この種の装置には、X、Y軸に平行に射出された
平行光線の遮断を検出するものや、電磁誘導を利用する
もの、表面弾性波を利用するもの。Conventional devices of this type include those that detect the interruption of parallel light beams emitted parallel to the X and Y axes, those that utilize electromagnetic induction, and those that utilize surface acoustic waves.
膜抵抗を利用するもの、交差する平行導線の接触をマト
リックスにより検出するもの、剛体力学を利用した機械
力によるものなどがある。各案の中では、構造の簡単さ
、パネルの選択の容易さなどの点で機械力形が優れてい
る。この機械力形では特公昭49−34247号公報、
特開昭59−225439号公報などが提案されている
。There are methods that utilize membrane resistance, methods that use a matrix to detect contact between crossing parallel conducting wires, and methods that use mechanical force using rigid body mechanics. Among the various proposals, the mechanical type is superior in terms of simplicity of structure and ease of panel selection. In this mechanical power type, Japanese Patent Publication No. 49-34247,
Japanese Unexamined Patent Publication No. 59-225439 has been proposed.
これらはいずれもパネル面の一点に加えられた力の分力
を板ばねのたわみに変換し、その板はねの歪量を検出す
るようKし工いるため、パネル面と板ばねの接触位置(
冥質的支持点位置)が変動し、検出値にシステム誤差を
生ずるという欠点があるわ
−1、上記入力装置がオフィスなどのような比較的保躾
された環境とは異なり、街頭等で不特定多数の人々に使
用されるような場合には、その利用者からの故意、不注
意からの粗雑で粗暴な入力操作に耐える必妖があるが、
これまでの提案ではこれらを対象としたようなものはな
い。In all of these, the component of force applied to one point on the panel surface is converted into the deflection of the leaf spring, and the K is designed to detect the amount of distortion of the leaf spring, so the contact position between the panel surface and the leaf spring is (
The disadvantage is that the position of the substantive support point changes, causing a systematic error in the detected value.1.The input device described above is different from a relatively well-maintained environment such as an office, and is not used in a relatively well-maintained environment such as an office. When used by a specific number of people, it is inevitable that it will withstand rough and rough input operations intentionally or inadvertently by those users.
No proposals to date have targeted these areas.
この発明は、上記の点にかんがみ工なされたもので、板
ばねを用いた機械力形で見られるような問題がなく、ま
た過大な力の入力による装置の破損を防止でき、街頭等
での使用忙も耐えられる座標入力装置を提供することを
目的とするものである。This invention has been made in consideration of the above points, and does not have the problems seen with mechanical force types using leaf springs, and can prevent damage to the device due to excessive force input, making it suitable for use on the street. The object of the present invention is to provide a coordinate input device that can withstand heavy use.
この発明にかかる座標入力装置は、パネル板を3点以上
支持する各支持点における分力を歪に変換する分力歪変
換部材をプラスチックからなる柱体とし、この分力歪変
換部材にかかる圧縮歪をそれぞれ検知する盃ゲージを設
けたものである。In the coordinate input device according to the present invention, the component force strain converting member that converts the component force at each support point of three or more points into strain is a column made of plastic, and the compression applied to the component force strain converting member is made of plastic. It is equipped with a cup gauge that detects each strain.
この発明忙おいては、パネル板を押圧して入力を加える
と各支持点における分力をプラスチックからなる柱体の
各分力歪変換部材が歪に変換し。According to this invention, when an input is applied by pressing the panel board, each force component strain converting member of the column made of plastic converts the component force at each support point into strain.
この歪が各歪ゲージによって検知され、押圧した入力点
が検出される。This strain is detected by each strain gauge, and the pressed input point is detected.
第7図は機械力形の座標検出原理を説明するための図で
あり、2Qはパネル板を示す。力学によれば剛体に働く
力F、と、このF、の作用点の位置ベクトルrl K
ついて5次式がなりたてば剛体のつりあいがとれること
が知られている。(c、f。FIG. 7 is a diagram for explaining the principle of mechanical coordinate detection, and 2Q indicates a panel board. According to mechanics, the force F acting on a rigid body and the position vector rl K of the point of action of this F
It is known that a rigid body can be balanced if a quintic equation holds. (c, f.
共立出版社物理学公式ン
とくに、F、 が平行力である場合には、II +1)
式はF、 VC垂直な面の座!1A(x、y)によって
、次式のように表現できる。Kyoritsu Shuppansha Physics Formula In particular, when F is a parallel force, II +1)
The formula is F, VC perpendicular plane seat! 1A(x,y), it can be expressed as follows.
ここで、F、 = I F、 Iであり、xIa’It
はF、のCx、y)座標値である。Here, F, = I F, I, and xIa'It
are the Cx, y) coordinate values of F.
いま、n点で支持したパネル板20面の一点(とその座
標(:t(syt)Kついて、次式が成り立つ。Now, regarding one point (and its coordinates (:t(syt)K) on the panel board 20 supported at n points, the following equation holds true.
この式より、力F、を加えたパネル板20の面の一点の
座標値(xp+7−をn個の支持点の座標値(”l=
# Yl )および支持点に加えられた反力f。From this equation, the coordinate value (xp+7-) of one point on the surface of the panel board 20 to which force F is applied is expressed as the coordinate value of n support points ("l=
#Yl) and the reaction force f applied to the support point.
Kより次のように求めることができる。It can be obtained from K as follows.
ここで、支持点の数nKついては次のような考察ができ
る。パネル面を平面として確定するKは幾何学上3点以
上が必要である。ところで、支持点数が3点よりも多(
なると検出面を一平面にするため支持点の高さ調整が必
IKなる他、−支持点あたりの反力が少な(なるため歪
ゲージなどによる反力検出出力レベルが低下して雑音レ
ベルに近付き、出方の信頼性が低下するなどの不利な点
が生ずる。しかしながら、3点によってパネル板20を
支持する場合には、3点に、より工作られる3角形の内
部に力が加えられれば各支持点での分力は圧縮力となる
が、3角形の外部に力が加えられると力の印加点に近い
2支持点の作る直線に対して力の印加点と反対側圧ある
l支持点の分力が引っ張り側になるため、支持点の分力
検出部は圧縮、引つ張りの両応力を検出するように構成
しなければならない63点で支持する場合に、支持点で
の分力検出を圧縮側のみとするKは、力の印加範囲を3
支持点の作る3角形内に限らなければならなくなり、通
常使用されるパネル板20の形状である長方形に対し又
は装置を大型化することKなる欠点がある。これに対し
て、各支持点での圧縮分力を対象とするこの発明は一般
的な長方形パネルを対象とすることが容易であり、以下
の説明では支持点数を4点とし工説明することとする。Here, the following consideration can be made regarding the number nK of support points. Geometrically, three or more points are required for K to determine the panel surface as a plane. By the way, if the number of support points is more than 3 points (
In this case, it is necessary to adjust the height of the support point to make the detection surface flat, and the reaction force per support point is small (as a result, the reaction force detection output level by strain gauges etc. decreases and approaches the noise level). However, in the case where the panel board 20 is supported by three points, if a force is applied to the inside of the triangle to be manufactured by the three points, each point will be damaged. The component force at the support point becomes a compressive force, but when a force is applied to the outside of the triangle, the pressure on the side opposite to the force application point is applied to the straight line formed by the two support points near the force application point. Since the component force is on the tensile side, the component force detection unit at the support point must be configured to detect both compressive and tensile stress.When supporting at 63 points, component force detection at the support point K is only on the compression side, and the force application range is 3
It has to be limited to the triangular shape formed by the support points, which has the drawback of increasing the size of the device compared to the rectangular shape of the panel board 20 that is normally used. On the other hand, this invention, which targets the compressive force at each support point, can easily be applied to a general rectangular panel, and in the following explanation, the number of support points will be four. do.
第8図(a)は支持点a、b、e、dを結ぶ対角縁を座
標軸とし、その交点を座標原点0(0,0)とした長男
形パネルにおける座標検出の説明のための図で、支持点
によって作られる長方形の長辺が加えられたパネル板2
0の面の一点の座標(Xp *y、)はつぎのように求
められる。Fig. 8(a) is a diagram for explaining coordinate detection in the eldest-shaped panel, with the diagonal edge connecting support points a, b, e, and d as the coordinate axis, and the intersection point as the coordinate origin 0 (0, 0). , panel board 2 with the long sides of the rectangle created by the support points added.
The coordinates (Xp *y,) of a point on the 0 plane are determined as follows.
いま、座標系をパネルの左上部を原点とする座標系(x
、 y) VC変換すると、第(5)式は次式のようK
なる。(第8図(b)ン
第1図はこの発明の一実施例を示すための斜視図であり
、10は基板、2Gはパネル板、30は分力検出部で、
基板10の四隅に設けられ工いる。Now, let's change the coordinate system to a coordinate system (x
, y) After VC conversion, equation (5) becomes K as shown in the following equation.
Become. (FIG. 8(b)) FIG. 1 is a perspective view showing an embodiment of the present invention, in which 10 is a substrate, 2G is a panel board, 30 is a component force detection section,
They are provided at the four corners of the substrate 10.
操作者がパネル板2Gより下方に設備された図示しない
ディスプレイによる操作指示に基づいて。Based on the operator's operation instructions from a display (not shown) installed below the panel board 2G.
ディスプレイ上方のパネル板20の面の一点を指等で押
して入力し、この入力位置を4つの支持点VC置いた分
力検出部30の歪ゲージ出力から求めるものである。An input is made by pressing a point on the surface of the panel board 20 above the display with a finger or the like, and this input position is determined from the strain gauge output of the component force detection section 30 placed at four support points VC.
分力検出部3aの構成の詳細を第4図に示す。FIG. 4 shows details of the configuration of the component force detection section 3a.
第4図で、31は保護部材で円筒状をなし、外周と内周
にねじ32,33が形成されるc 34は固定ナツトで
ある。保Mi1)(S材31は、その外周のねじ32を
基板10のねじ孔1)に螺合し、ねじ32に554合さ
せた固定ナツト34を締めることkより基板10に固定
される。35は受は部材で、外周はねじ36を有し、保
護部材31のねじ33に螺合する。37.38.39は
スペーサで、いずれもほぼ同じ外径を存し、スペーサ3
9は内径を他のスペーサ37..31)より大きく形成
しである。In FIG. 4, reference numeral 31 designates a cylindrical protection member, with screws 32 and 33 formed on the outer and inner peripheries, and 34 a fixing nut. (The S material 31 is fixed to the substrate 10 by screwing the screw 32 on its outer periphery into the screw hole 1 of the substrate 10 and tightening the fixing nut 34 fitted with the screw 32 at 554 degrees. Reference numeral 35 designates a receiver member, which has a screw 36 on its outer periphery and is screwed into the screw 33 of the protection member 31. 37, 38, and 39 are spacers, all of which have approximately the same outer diameter, and spacer 3
9 is the inner diameter of another spacer 37. .. 31) It is formed larger.
40は分力歪変換部材であり、各スペーサ37〜39を
貫通し、その底面が受は部材35で支承される。分力歪
変換部材40の頂部には金属部材41が取り付けられ、
また分力歪変換部材40のスペーサ39内に位置する部
位に、分力歪変換部材40が力F、の分力f、 から
変換した歪を電気抵抗変化に変換する歪ゲージ42.4
3が取り付けられ、それぞれのリード@44.45はス
ペーサ38にモールドされ、端部が外部に導出される。Reference numeral 40 denotes a force strain converting member, which passes through each of the spacers 37 to 39, and its bottom surface is supported by the member 35. A metal member 41 is attached to the top of the component force strain conversion member 40,
In addition, at a portion of the component force strain converting member 40 located within the spacer 39, a strain gauge 42.4 is provided that converts the strain converted from the component force f of the force F into an electrical resistance change.
3 is attached, each lead @44, 45 is molded into the spacer 38, and the end is led out.
また、パネル板20の下面には保護部材21が接着剤等
により取り付けられ、分力歪変換部材40の当接による
パネル板20の保護をはかつC〜・る。Further, a protection member 21 is attached to the lower surface of the panel board 20 with an adhesive or the like, and protects the panel board 20 by contact with the component force strain converting member 40.
なお、歪ゲージ42.43は分力歪変換部材41にモー
ルドしてもよい。Note that the strain gauges 42 and 43 may be molded onto the component force strain converting member 41.
第2図は第1図の側面図、第3図は第1図の上面図でパ
ネル板20を゛取り去つ1示した図である。2 is a side view of FIG. 1, and FIG. 3 is a top view of FIG. 1, with the panel board 20 removed.
基板10に4個の円筒状の分力検出部30が取り付けら
れていて、この分力検出部30がパネル板20の板面に
ほぼ等しい圧縮応力(パネル自重などKよる)で接する
ようKされている。Four cylindrical force detectors 30 are attached to the substrate 10, and the component force detectors 30 are arranged so that they are in contact with the surface of the panel board 20 with approximately equal compressive stress (depending on the panel's own weight, etc.). ing.
第5図は分力検出部30の歪ゲージ42.43の出力の
処理回路の例を示したものである。歪ゲージ42と43
は一組となっている歪ゲージ(これをR1〜Rd とす
るン各分力検出部30に設けられ1いる。、1)゜は定
電流源の′IIL流、51〜53は演算増幅器、54は
マルチプレクサ、55はA/Dフンバータ、60は制御
部で、I10ハンファ61,62. メモリ63.CP
U6i バス65で構成されるcRoは抵抗器である。FIG. 5 shows an example of a processing circuit for the outputs of the strain gauges 42 and 43 of the component force detection section 30. Strain gauges 42 and 43
are a set of strain gauges (referred to as R1 to Rd), which are provided in each component force detection section 30. 54 is a multiplexer, 55 is an A/D converter, 60 is a control unit, and I10 Hanwha 61, 62 . Memory 63. C.P.
cRo comprised of the U6i bus 65 is a resistor.
またvI は入力電圧、voは前記抵抗器R6の両端
の電圧、FPffilmは入力圧力の最小値、マ1〜V
4 は各歪ゲージの組R1〜R,の出力を表わち次に動
作について説明する。パネル板200対角にある支持点
の歪ゲージR,とR4e R1,とRoの出力の差が演
算増幅器51.52によって増幅され工、マルチプレク
サ54に入力される。また丁ぺての歪ゲージR1〜R4
の出力の初期値からの変化分が演算増幅器53VCよっ
て加算されて、マルチプレクサ54に入力される。マル
チプレクサ54は制御部60からの指示にしたがって、
入力のいずれかをA/D コンバータ55に接続する。Also, vI is the input voltage, vo is the voltage across the resistor R6, FPffilm is the minimum value of the input pressure,
4 represents the output of each strain gauge set R1 to R, and the operation will be explained next. The difference between the outputs of the strain gauges R, R4e, R1, and Ro at the diagonal support points of the panel board 200 is amplified by operational amplifiers 51, 52, and input to the multiplexer 54. Also, the strain gauges R1 to R4
The changes in the outputs from the initial values are added by the operational amplifier 53VC and input to the multiplexer 54. The multiplexer 54 follows instructions from the control unit 60.
One of the inputs is connected to an A/D converter 55.
A/D コンバータ55は制御部60の指示によって
、入力された計測データをディジタル値に変換して出力
する。制#s60はこのディジクル出力から以下に説明
する第(6)式を変換した第00)式を用いて、入力点
の座*Cx、、yp)を計算する。制御部60のデータ
処理手順の例を第6図に示す。The A/D converter 55 converts the input measurement data into digital values and outputs the digital values according to instructions from the control section 60. The system #s60 calculates the coordinates *Cx, yp) of the input point from this digital output using equation 00) obtained by converting equation (6) described below. An example of the data processing procedure of the control unit 60 is shown in FIG.
この回路について、処理内容を以下に説明する。The processing contents of this circuit will be explained below.
いま、各分力検出部30の歪ゲージ42,43、分力歪
変換部材40を等しいものとし、また歪ゲージ42.4
3の変換式である第(7)式を使って、第(6)式を変
換すると、
ここで、R1は各支持点の歪ゲージ42と43を合わせ
た電気抵抗値、Ro はR,の基準値、Sは分力歪変換
部材40の断面積、Eは分力歪変換部材40の縦弾性係
数、には歪ゲージ42.43のゲージ率を求める座標(
xp r Yp )は次式のよ5になる。Now, it is assumed that the strain gauges 42 and 43 of each component force detection unit 30 and the component force strain conversion member 40 are equal, and the strain gauges 42 and 4
Converting equation (6) using equation (7), which is the conversion equation in step 3, we get: Here, R1 is the electrical resistance value of the strain gauges 42 and 43 at each support point, and Ro is the value of R. The reference value, S is the cross-sectional area of the component force strain converting member 40, E is the longitudinal elastic modulus of the component force strain converting member 40, and the coordinates (
xpr Yp) becomes 5 as shown in the following equation.
これを!1@して、
いま、第5図の回路で演算増幅器51.52への歪ゲー
ジ81〜R−からの入力電圧は、看 =R,−I、
・・・・・・・・・・・・・・・・・・・・・・・・
・・・(切であるから、Vo ” R6・■。として、
第(10)式は次式のようになる。this! Now, in the circuit shown in Fig. 5, the input voltages from the strain gauges 81 to R- to the operational amplifiers 51 and 52 are as follows: =R, -I,
・・・・・・・・・・・・・・・・・・・・・・・・
...(Since it is off, Vo ” R6・■.
Equation (10) becomes as follows.
以上のようKして、第5図の回路によって入力指示点の
座II (X、 # y、)が求められることが判る。As described above, it can be seen that the locus II (X, #y,) of the input instruction point can be found using the circuit shown in FIG.
ところで、ここでは説明の便宜のため定電流電源を使用
したが、定電圧電源を使用しても、若干の近似を行うこ
とKなるものの同様の結果が得られる。Incidentally, although a constant current power supply is used here for convenience of explanation, similar results can be obtained even if a constant voltage power supply is used, although some approximations are required.
また第(10式を見れば判るように、Xp e Yp
゛を求める式は歪ゲージ42,43の出力電圧の一次式
と5しの割算となっている。したがって、歪ゲー942
.43の温度特性による検出座標値への影響は分子分母
で相殺され、精度の高い結果が得られる。Also, as you can see from equation 10, Xp e Yp
The formula for calculating " is the linear formula for the output voltages of the strain gauges 42 and 43, divided by 5. Therefore, distortion game 942
.. The influence of the temperature characteristics of 43 on the detected coordinate values is canceled out by the numerator and denominator, and highly accurate results can be obtained.
■ いま、パネル板20に力F、が加えられると圧縮分
力f、 Kよって分力検出部30は圧縮される。分力
歪変換部、材40がプラスチックで製造しであるとする
と分力検出部30の圧縮歪量はほぼ分力歪変換部材40
の歪量となる。分力歪変換部材40に取り付けた歪ゲー
ジ42,43の有効計測長さをl、分力歪変換部材40
の断面積なS、縦弾性係数なEとすると、分力検出部3
0の圧縮歪量Δlは次式であたえられる。(2) Now, when a force F is applied to the panel board 20, the component force detector 30 is compressed by the compression components f and K. If the component force strain converting section and the material 40 are made of plastic, the amount of compressive strain of the component force detecting section 30 will be approximately equal to that of the component force strain converting member 40.
The amount of distortion is The effective measurement length of the strain gauges 42 and 43 attached to the component force strain conversion member 40 is l, and the component force strain conversion member 40
Let S be the cross-sectional area and E be the longitudinal elastic modulus, then component force detection unit 3
The compressive strain amount Δl of 0 is given by the following equation.
−t
Δl=−一」−・・・・旧・・・・n1・・・・(12
)−E
いま、f、/Sは分力歪変換部材40に加えられた圧縮
応力σ1 であることを考えると、Δig・−一 ・
・・・・・・・・川・・・・・曲(137変換出力を太
き(するkはlか(σ、/E)の値を大きく丁ればよい
ことKなる。−t Δl=−1”−・・・・old・・・・n1・・・・(12
)-E Now, considering that f, /S is the compressive stress σ1 applied to the component force strain conversion member 40, Δig・-1・
・・・・・・・・・・・・・・・ Song (137) Make the converted output thicker (k is l or (σ, /E) should be made larger.
したがって、同一の歪ゲージに対しては(σ、/E)の
値を大きくする必要がある。ところで。Therefore, it is necessary to increase the value of (σ, /E) for the same strain gauge. by the way.
σ1 は入力である圧縮分力f、を大きくすれば太き(
なるが、圧縮降伏応力σア より大きくすることはでき
ない。したがって、(σ、 /E )の大きなものを用
いることkより、変換出力を太き(することができるこ
とKなる。σ1 becomes thicker (
However, it cannot be made larger than the compressive yield stress σa. Therefore, by using a large value (σ, /E), the conversion output can be made thicker.
従来、応力歪変換によく用いられる金属ではこの(σア
/E )の値は第1表に例を示すように比較的小であり
、金属を使用する場合には、板ばね等により歪量を大伊
くする必要があった。これに対し、プラスチックでは第
2表に例を示すようK(σ、 /E ) の値は比較
的大きいため、直接圧縮分力を検出でき、板ばね等の誤
差を生ずる変換手段を使用しな(てもすむものである。Conventionally, the value of (σa/E) for metals often used for stress-strain conversion is relatively small, as shown in Table 1. It was necessary to make it big. On the other hand, for plastics, the value of K(σ, /E) is relatively large, as shown in Table 2, so the compressive component force can be directly detected without using conversion means that cause errors, such as leaf springs. (It's worth it.
第1表
第2表
■ つぎK、パネル板2GVC加えられる力の分力の最
大値を’l(wax)とし1分力歪変換部材4Gの長さ
をLとすると、分力歪変換部材40が分力により圧縮さ
れる歪量ΔLは次式によって求められる。Table 1 Table 2■ Next, K, if the maximum value of the component force of the force applied to the panel plate 2GVC is 'l (wax) and the length of the 1-component force strain conversion member 4G is L, then the component force strain conversion member 40 The amount of strain ΔL compressed by component force is determined by the following equation.
ここで、fB□8〆Sが分力歪変換部材40の圧縮降伏
応力σア よりも大きい場合には分力歪変換部材40は
降伏してしまい分力検出は困難となる。Here, if fB□8〆S is larger than the compressive yield stress σa of the component force strain converting member 40, the component force strain converting member 40 will yield, making detection of the component force difficult.
いま、分力検出部300近くに保護部材jをおいて1分
力検出部30が保護部材31のパネル側面よりパネル側
へ出ている量をΔDであるようにすると、ΔL〉ΔDの
時は保護部材31によって、パネル板20を支持するこ
とになり1分力検出部30を破壊からまもることができ
る。ところで、この場合、ΔDの値は第64ン式より、
であればよい。Now, if the protection member j is placed near the component force detection unit 300 and the amount by which the one component force detection unit 30 protrudes from the panel side surface of the protection member 31 toward the panel side is ΔD, then when ΔL>ΔD The protection member 31 supports the panel board 20 and can protect the 1-minute force detection section 30 from destruction. By the way, in this case, the value of ΔD may be as follows from the 64th formula.
■ つぎに、パネル板20と分力検出部30の接点はで
きるだけ接触面積が小さいものであるほうが1分力検出
部30の座標を高精度にすると、降伏応力が小さいため
、この条件に逆行することとなる。この場合には分力歪
変換部材40のパネル板20側に降伏応力の大きな金属
部材を接着することにより、これを避けることができ、
精度の向上を図ることができる。■Next, it is better to make the contact area between the panel plate 20 and the component force detector 30 as small as possible, because if the coordinates of the 1 component force detector 30 are made highly accurate, the yield stress will be small, which will go against this condition. That will happen. In this case, this can be avoided by bonding a metal member with a large yield stress to the panel plate 20 side of the component force strain converting member 40.
Accuracy can be improved.
■ 一方、パネル板20と分力検出部30との接触部は
力F、の印加のため、パネル板20がご(わずかにたわ
むことにより、所期の接触条件から変化するため、パネ
ル板20も降伏応力以上の応力を受け、変形することに
なりやすい。したがって、分力検出部30と接触するパ
ネル板20側にも、金属からなる保護部材31なつける
ことKよって、パネル板20の変形を防止し、寿命を向
上させることができる。ここで、保護部材31の面積を
S9、パネル板20に加えられる力の分力の最大値をf
l(+max)’パネル板20の降伏応力をσア とす
ると、
とする必要がある。On the other hand, due to the application of force F to the contact portion between the panel plate 20 and the component force detection unit 30, the panel plate 20 bends slightly (which changes from the intended contact condition). is likely to be deformed by being subjected to a stress greater than the yield stress. Therefore, by attaching a protective member 31 made of metal to the side of the panel plate 20 that contacts the component force detection section 30, the deformation of the panel plate 20 is prevented. Here, the area of the protective member 31 is S9, and the maximum value of the force component applied to the panel board 20 is f.
l(+max)' If the yield stress of the panel board 20 is σa, then it is necessary to satisfy the following equation.
■ ■で述べたΔDの調整量は微小であるので、保護部
材31を円筒状として、その内面にねじ33をつげ工、
受は部材35を進退させることによって、ΔDの調整を
高精度にすることができる。■ Since the amount of adjustment of ΔD mentioned in (■) is minute, the protective member 31 is made into a cylindrical shape, and the screw 33 is inserted into the inner surface of the protective member 31.
By moving the member 35 back and forth, the receiver can adjust ΔD with high accuracy.
■ また、パネル板20の面は一般に完全な平面ではな
いので、保護部材31を円筒状として、その外面にねじ
32をつけ、このねじ32によって保護部材31を基板
10に対して適切な位置に固定させることにより、各支
持点でのパネル板20と分力検出部30との接触を均等
な条件にして分力検出83Gが正しい分力を受けるよう
にすることができる。■ Also, since the surface of the panel board 20 is generally not perfectly flat, the protective member 31 is made into a cylindrical shape, and a screw 32 is attached to the outer surface of the protective member 31. By fixing, it is possible to make the contact between the panel plate 20 and the component force detection section 30 at each support point equal, so that the component force detection 83G receives the correct component force.
この発明は以上説明したように、パネル板を支持する3
点以上の支持点に設げられろ分力検出部の各分力歪変換
部材をプラスチックからなる柱体とし、これらの各分力
歪変換部材に歪ゲージを設けたので、剛体力学の原1!
IC比較的近い形で入力指示位置の座標を検出できるの
で、高精度の座標入力が可能となる。また保護部材を設
けたものは過大入力に対しても耐えることができ、比較
的乱暴な取扱いを受ける街頭等での使用かできるという
効果がある。As explained above, this invention has three parts that support the panel board.
Each component force strain converting member of the component force detecting section installed at a support point or more is made of a column made of plastic, and each component force strain converting member is provided with a strain gauge. !
Since the coordinates of the designated input position can be detected relatively close to the IC, highly accurate coordinate input is possible. Moreover, the device provided with the protective member can withstand excessive input, and has the advantage that it can be used on the street where it is subjected to relatively rough handling.
第1図はこの発明の一実施例を示す斜視図、第2図は第
1図に示した実施例の側面図、第3図は第1図に示した
実施例のパネルを取り去って示しユ
だ上面図、第4図はこの発明の主要部の構成をボ拡大図
、第5図は分力検出部の歪ゲージからの出力の処理回路
の例を示す図、第6図は第5図の制御部が行う座標を求
めるためのデータ処理手順を示すフローチャート、第7
図はn点で支持したパネル面の一点に力F、を加えて、
その一点の座標を求める原理を説明するための図、第8
図(&ンは、4点で支持した長方形パネルで対角線を座
標軸とし、対角線の交点を座標原点とした場合の説明図
、第8図(b)は第8図(a)の座標系を長方形パネル
の左上を原点とする座標系忙変換するための説明図であ
る。
囚において、10は基板、20はパネル板、30は分力
検出部、31は保護部材、40は分力歪変換部材、41
は金属部材、42.43は歪ゲージである。
第1図
第2図
U
31:保N−n材
第4図
第6図
第7図
りO
第8図1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a side view of the embodiment shown in FIG. 1, and FIG. 3 is a side view of the embodiment shown in FIG. 1, with the panel removed. 4 is an enlarged view of the configuration of the main part of the present invention, FIG. 5 is a diagram showing an example of a processing circuit for the output from the strain gauge of the component force detector, and FIG. Flowchart showing the data processing procedure for determining coordinates performed by the control unit of
The figure shows a force F applied to one point on the panel surface supported at n points,
Diagram for explaining the principle of determining the coordinates of that single point, No. 8
Figure 8(b) is an explanatory diagram of a rectangular panel supported at four points with the diagonal line as the coordinate axis and the intersection of the diagonal lines as the coordinate origin. Figure 8(b) shows the coordinate system of Figure 8(a) It is an explanatory diagram for performing a coordinate system transformation with the origin at the upper left of the panel. In the figure, 10 is a board, 20 is a panel board, 30 is a component force detection section, 31 is a protection member, and 40 is a component force strain conversion member. , 41
is a metal member, and 42.43 is a strain gauge. Figure 1 Figure 2 U 31: Protection N-n material Figure 4 Figure 6 Figure 7 Diagram O Figure 8
Claims (6)
記パネル板を基板上に支持する3点以上の支持点におい
て検出し、力の加えられた点の座標を求める分力検出部
を備えた座標入力装置において、前記各支持点において
分力を歪に変換する前記分力検出部の分力歪変換部材を
プラスチックからなる柱体とし、これらの分力歪変換部
材にかかる圧縮歪をそれぞれ検知する歪ゲージを前記各
分力歪変換部材に設けたことを特徴とする座標入力装置
。(1) Detect the component force of the force applied to one point on the board surface of the panel board at three or more support points that support the panel board on the board, and determine the coordinates of the point where the force was applied. In the coordinate input device equipped with a detection unit, the component force strain conversion member of the component force detection unit that converts the component force into strain at each of the support points is a column made of plastic, and the component force strain conversion member applied to these component force strain conversion members is A coordinate input device characterized in that each of the component force strain conversion members is provided with a strain gauge for detecting compressive strain.
下に制限して分力検出部を保護するための金属からなる
保護部材を備えたことを特徴とする特許請求の範囲第(
1)項記載の座標入力装置。(2) Claims characterized in that the component force detection section includes a protective member made of metal for protecting the component force detection section by limiting the amount of compressive strain caused by the component force to a certain value or less. No. (
Coordinate input device described in section 1).
る側の部分に金属部材を備えたことを特徴とする特許請
求の範囲第(1)項記載の座標入力装置。(3) The coordinate input device according to claim (1), wherein the component force strain converting member includes a metal member on a side that contacts the plate surface of the panel plate.
らなる保護部材を備えたことを特徴とする特許請求の範
囲第(1)項記載の座標入力装置。(4) The coordinate input device according to claim (1), wherein the panel plate is provided with a protective member made of metal at a portion that comes into contact with the component force detection section.
ージを取り囲む円筒状とし、その内面にねじを切り、こ
のねじによつて前記分力歪変換部材と歪ゲージを保護部
材の内部を進退できるようにした分力検出部受け部材を
備えたことを特徴とする特許請求の範囲第(2)項記載
の座標入力装置。(5) The protection member of the component force detection section has a cylindrical shape that surrounds the component force strain conversion member and the strain gauge, and has a thread cut on its inner surface, and the screw protects the component force strain conversion member and the strain gauge. 2. A coordinate input device according to claim 2, further comprising a component force detection portion receiving member that can move forward and backward inside the coordinate input device.
ージを取り囲む円筒状とし、その外面にねじを切り、こ
のねじによつて前記円筒状の保護部材が基板に対して進
退できるように構成したことを特徴とする特許請求の範
囲第(2)項記載の座標入力装置。(6) The protection member of the component force detection unit is cylindrical and surrounds the component force strain conversion member and the strain gauge, and a thread is cut on its outer surface, and this screw allows the cylindrical protection member to advance and retreat with respect to the board. The coordinate input device according to claim (2), characterized in that the coordinate input device is configured to be able to perform the following operations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60134236A JPH0654462B2 (en) | 1985-06-21 | 1985-06-21 | Coordinate input device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60134236A JPH0654462B2 (en) | 1985-06-21 | 1985-06-21 | Coordinate input device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61292732A true JPS61292732A (en) | 1986-12-23 |
JPH0654462B2 JPH0654462B2 (en) | 1994-07-20 |
Family
ID=15123603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60134236A Expired - Fee Related JPH0654462B2 (en) | 1985-06-21 | 1985-06-21 | Coordinate input device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0654462B2 (en) |
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WO2010109756A1 (en) * | 2009-03-25 | 2010-09-30 | 三菱電機株式会社 | Coordinate input display device |
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JP2011154564A (en) * | 2010-01-27 | 2011-08-11 | Minebea Co Ltd | Input device for electronic equipment, input control method, and electronic equipment |
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US10162444B2 (en) | 2012-12-14 | 2018-12-25 | Apple Inc. | Force sensor incorporated into display |
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US10295562B1 (en) | 2015-03-06 | 2019-05-21 | Apple Inc. | Electronic watch with obscured sensor for detecting an applied force |
US10379657B2 (en) | 2014-02-12 | 2019-08-13 | Apple Inc. | Force determination employing sheet sensor and capacitive array |
US10739855B2 (en) | 2016-03-31 | 2020-08-11 | Apple Inc. | Electronic device configured to collect biometric and amount of force data when a user touches a displayed image |
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-
1985
- 1985-06-21 JP JP60134236A patent/JPH0654462B2/en not_active Expired - Fee Related
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JP2005003494A (en) * | 2003-06-11 | 2005-01-06 | Sharp Corp | Panel sensor and information equipment having the same |
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JP2010225031A (en) * | 2009-03-25 | 2010-10-07 | Mitsubishi Electric Corp | Coordinate input display |
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JP2010272143A (en) * | 2010-08-27 | 2010-12-02 | Elo Touchsystems Inc | Dural sensor touch screen using projective-capacitive sensor and pressure-sensitive touch sensor |
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US11747950B2 (en) | 2013-02-08 | 2023-09-05 | Apple Inc. | Force determination based on capacitive sensing |
US10262179B2 (en) | 2013-07-25 | 2019-04-16 | Apple Inc. | Input member with capacitive sensor |
US10706252B2 (en) | 2013-07-25 | 2020-07-07 | Apple Inc. | Electronic device with strain-based force sensor |
US10817096B2 (en) | 2014-02-06 | 2020-10-27 | Apple Inc. | Force sensor incorporated into display |
US10739899B2 (en) | 2014-02-12 | 2020-08-11 | Apple Inc. | Force determination employing sheet sensor |
US10379657B2 (en) | 2014-02-12 | 2019-08-13 | Apple Inc. | Force determination employing sheet sensor and capacitive array |
US10198123B2 (en) | 2014-04-21 | 2019-02-05 | Apple Inc. | Mitigating noise in capacitive sensor |
US10295562B1 (en) | 2015-03-06 | 2019-05-21 | Apple Inc. | Electronic watch with obscured sensor for detecting an applied force |
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Also Published As
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JPH0654462B2 (en) | 1994-07-20 |
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