JPH0337591A - Contact detector - Google Patents

Abstract

PURPOSE:To prevent damage to the apparatus by mounting a half-rigid touch plate adapted to deflect when contacting a man or an object on the surface of a flexible plate such as rubber plate hanging down from a machine or the like. CONSTITUTION:This detector is equipped with a half-rigid touch plate 2 adapted to deflect when contacting a man or an object on the surface of a flexible plate 1 such as rectangular rubber plate and a switch is mounted to respond with a transmission through the flexible plate 1. Then, an upper end of the flexible plate 1 is mounted on an upper machine body of a rear wheel 11 of a forklift 10 and a contact detection means hangs down as a whole. When a contact detector is mounted at the part of the rear wheel 11 in this manner, it follows the rear wheel 11 closely even when it turns to deviate outside the body. This enables detection of an obstacle ahead thereof in advance before the machine body contacts it.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、例えばフォークリフト等の運搬機械や建設
機械等の機体に取付け、機体や車輪が人身、器物に損傷
を与える事故を未然に肋ぐための接触検知装置に関する
ものである。[Detailed Description of the Invention] [Field of Industrial Application] This invention is attached to the body of a transport machine such as a forklift, construction machine, etc., and prevents the body or wheels from causing an accident that may cause damage to persons or property. The present invention relates to a contact detection device for use in applications.

〔従来の技術〕[Conventional technology]

従来、例えばフォークリフトは前進、後退、旋回の連続
作業であり、特に旋回半径が小さいため、急発信の際に
後輪および後部車体近傍にある人身器物に損傷を与える
事故が多発している。また、運転席が前方を向いている
ために後方、特に左後方の確認は視野外になり事故の発
生も多かった。Conventionally, for example, a forklift truck has to continuously move forward, backward, and turn, and because the turning radius is particularly small, accidents frequently occur in which damage to rear wheels and personal property near the rear vehicle body occurs when a sudden call is made. Additionally, because the driver's seat faces forward, checking the rear, especially the left rear, is out of the field of vision, leading to many accidents.

このような事故の発生を防止するために、熱線。To prevent such accidents from occurring, heat wire.

超音波、赤外線、磁気センサが従来から検討されている
が、衝突対象物か否かの判定が出来ずに未だ実用化され
るには至っていない。このような非タッチセンサに代え
て車体に取付けたバンパーにタッチセンサを組み込んだ
り、タッチセンサとなるガードバ−を車体に取付けたり
していた。Ultrasonic, infrared, and magnetic sensors have been considered in the past, but they have not yet been put into practical use because they cannot determine whether an object is a collision target or not. Instead of such non-touch sensors, a touch sensor has been incorporated into a bumper attached to the vehicle body, or a guard bar serving as a touch sensor has been attached to the vehicle body.

〔解決しようどする課題〕[Issues we are trying to solve]

バンパーやガードバ−にタッチセンサを設けたものでは
、車体本体を損傷から守る構造のものが多い。またバン
パーに発泡体を使用し、この「１刊ごタッチセンサノを
組み込んだものでは、衝突時の衝撃力が大きくバンパー
自体の細化が大きく、耐久性に難点があった。また、タ
ッチセンサを内部に固定しているために、バンパーの（
（１を突によりタッチセンサかこわれ易く、こわれでし
まうとバンパ全体を取外して修理しなければならず大変
であった。さらに車体後方に取付けられる衝撃吸収バン
パーにタッチセンサを組込んだものでは、衝突時の車体
損傷防護が主で人身、器物に対しての損傷は東れブ５い
ものであった。また、接触センサとして車体側部に後輪
の軌跡領域を検知する、例えば棒スイノチを使用したも
のでは、前進・後退に際しても感知して、実用的でなか
−った。Many of the bumpers and guard bars equipped with touch sensors have a structure that protects the vehicle body from damage. In addition, when foam was used for the bumper and the touch sensor was incorporated, the impact force at the time of a collision was large, and the bumper itself became thinner, making it less durable. is fixed inside the bumper (
(1) The touch sensor easily breaks due to an impact, and if it breaks, the entire bumper must be removed and repaired, which is a pain.Furthermore, in the case of a shock-absorbing bumper that is attached to the rear of the vehicle, the touch sensor is easily damaged. The main purpose was to protect the vehicle body from damage in the event of a collision, and the damage to people and property was extremely high.In addition, a contact sensor was used on the side of the vehicle body to detect the trajectory area of the rear wheels, for example, a bar suinochi. However, it was impractical because it sensed when moving forward or backward.

そこで、この発明は、運搬機械や連設機械等に人身や器
物が接触したときに確実に作動すると共にそれ自体の損
傷も少なく、仮に損傷したとじても取り替えが容易な接
触検知装置Ｚを提供することを目的とする３゜ 〔課題ｉ　１１Ｍ’決するための手段〕−に連の目的を
達成するため、この発明は、上端部を運搬機械や建設機
械等に取伺けてこれら機械等から乗れ一ドかるコト板等
の可撓板の表側に人や物が接触したときに撓む半剛性の
タッチ板を取イ【１け、可撓板の県側にタッチ板に（’
＋川した力が可撓板を介しで伝達されることにより感応
するスイッチを取付けたものである。Therefore, the present invention provides a contact detection device Z that operates reliably when a person or property comes into contact with a transport machine, a connected machine, etc., causes little damage to itself, and is easy to replace even if it is damaged. In order to achieve the object related to 3゜ [Means for solving problem i 11M'] -, the present invention has been developed so that the upper end can be accessed to transport machines, construction machines, etc. Take a semi-rigid touch board that bends when a person or object comes into contact with the front side of a flexible board such as a board that you can ride on.
This switch is equipped with a switch that responds to the force transmitted through the flexible plate.

し作用〕 フォークリフトの後輪は旋回時に車体外へのはみ出しか
大きいにも関わらず機能上ホイールハウジンクが装着で
きないので直接人身や器物に接触する虞れがあったが、
この発明の接触検知装置をフォークリフトの後輪上部の
機体に取付けた場合、後輪が接触する前にこの接触検知
装置が人身や器物に接触する。接触検知装置のタッチ板
に人身や器物が＋妾触した場合、半剛性のタンチ板はコ
ト板等の可撓板を撓め、可撓板が撓むとその裏側に設け
たスイッチが感応してフォークリフトの作動を停止ある
いは警告ブザー等を鳴らす。Although the rear wheels of a forklift protrude outside the vehicle body to a large extent when turning, the wheel housing cannot be attached due to its functionality, so there is a risk of direct contact with people or property.
When the contact detection device of the present invention is attached to the body of a forklift above the rear wheels, the contact detection device comes into contact with a person or property before the rear wheels come into contact. When a person or object touches the touch plate of the contact detection device, the semi-rigid touch plate will bend the flexible plate such as the touch plate, and when the flexible plate bends, the switch installed on the back side will respond. Stop forklift operation or sound a warning buzzer, etc.

〔実施例〕〔Example〕

以下に、二の発明の好適な実施例を図面を参照にして説
明する。A preferred embodiment of the second invention will be described below with reference to the drawings.

第１図に示す第■実施例は、長方形状のゴム板等の可撓
板１の表側に人や物が接触したときに撓む半剛性のタッ
チ板２を取付け、可撓板ｌの裏側にはタッチ板２に作用
した力が可撓板１を介して伝達されることにより感応す
るスイッチ３を取付けである。第１図中符号４はスイッ
チ３のリード線であり、このリード線４がブザー等に接
続される。可撓板ｌは２〜３　ｍｍ程度のゴムシートを
用いた。１：た、タッチ板２としては、塩化ビニル等の
プラスチック板や金属板の使用が好適である。Embodiment 2 shown in FIG. A switch 3 is attached to the touch panel 2, which is sensitive to the force acting on the touch panel 2 as it is transmitted through the flexible panel 1. Reference numeral 4 in FIG. 1 is a lead wire of the switch 3, and this lead wire 4 is connected to a buzzer or the like. As the flexible plate 1, a rubber sheet with a thickness of about 2 to 3 mm was used. 1: As the touch plate 2, it is preferable to use a plastic plate such as vinyl chloride or a metal plate.

このような接触検知装置を例えばフォークリフ）１０に
取付けた例を第２図に基づいて説明すると、フォークリ
フト１０の後輪１１の上部機体に可撓板１の−ｌ二Ｏ：
Ａｉ部を取付けて接触検知手段全体を垂れ下げろ。この
ように後輪１１の個所に接触検知装置を取付けた場合、
後輪１１が旋回して車体外にはみ出した際にも馴染み良
く追随し、表側からの障害物に機体が接触する前に先１
ｊして検知することができるようになる。ノ１３図は後
ｄｉ！　Ｉ　］が機体からはみ出して接触検知装置を外
側へ押しやった状態を示し、この状態で障害物が矢印方
向から接触すると、障害物はタッチ板２に接触し、゛１
屯剛性のタッチ板２は可撓板１を撓めると：Ｊ１；に裏
側のスイッチ３に作用する。第３図において、符号ｌで
示す幅が先行検知幅となる。An example in which such a contact detection device is attached to, for example, a forklift (forklift) 10 will be explained based on FIG.
Attach the Ai section and hang down the entire contact detection means. When the contact detection device is installed at the rear wheel 11 in this way,
Even when the rear wheels 11 turn and protrude outside the vehicle body, they follow the vehicle well, and the rear wheels 11 follow the vehicle well before they come into contact with an obstacle from the front side.
j and can be detected. Figure 13 is later! I ] is protruding from the aircraft body and pushing the contact detection device to the outside. If an obstacle comes into contact with it from the direction of the arrow in this state, the obstacle will come into contact with the touch plate 2, and the contact detection device will be pushed outward.
When the flexible plate 1 is bent, the rigid touch plate 2 acts on the switch 3 on the back side. In FIG. 3, the width indicated by the symbol l is the advance detection width.

第４図および第５図に示す第２実施例では、フォークリ
フ）１０の後面側に複数のタッチ板２とスイッチ３を備
えた接触検知装置を設け、接触検知装置の裏側と機体と
の間に性状クツション体５を介在させたものを示す。こ
の実施例では、可撓板１に複数のタッチ板２とスイッチ
３を取イ；１け、タッチ板２とスイッチ３の各組の間に
スリット６を形成しである。このように可撓板１にスリ
ット６を形成し、可撓板６に設けた取付は孔７を介して
フォークリフト１０の機体の」二部に接触検知装置を乗
れ下げるように取イ１けた場合、障害物から入る夕（力
が平面的に拡散せずに１つのスイッチ３に応力が集中し
、支障のない障害物は感知せず作業性が上がる。In the second embodiment shown in FIGS. 4 and 5, a contact detection device equipped with a plurality of touch plates 2 and switches 3 is provided on the rear side of a forklift 10, and a contact detection device equipped with a plurality of touch plates 2 and switches 3 is provided between the back side of the contact detection device and the machine body. A cushion body 5 is interposed therebetween. In this embodiment, a plurality of touch plates 2 and switches 3 are mounted on a flexible plate 1; a slit 6 is formed between each pair of touch plates 2 and switches 3. In this way, the slit 6 is formed in the flexible plate 1, and the contact detection device is installed in the flexible plate 6 so that it can be mounted on the body of the forklift 10 through the hole 7. , when the force enters from an obstacle (force is not diffused in a plane, stress is concentrated on one switch 3, and obstacles that do not pose a problem are not detected, improving work efficiency.

第６図は、複数のタッチ仮２とスイッチ３を設け、可撓
板１に複数のスリット６を形成した接触検知装置の裏側
を示し、夫々のスイッチ３のリード線４は接続されて負
荷ブザー等８に接続しである。督１６図中符号９はリー
ド線４のカバーを示ずつ前述の取イ」け孔７は車体にフ
ックを取付け、これらのフックに孔７を引っ掛けるよう
にすれば取り外しも容易である。枕状クッション体５を
設けることにより、接触検知装置の先行検知幅ｌを人き
くすることができる。FIG. 6 shows the back side of a contact detection device in which a plurality of touch pads 2 and switches 3 are provided, and a plurality of slits 6 are formed in a flexible plate 1, and the lead wires 4 of each switch 3 are connected to a load buzzer. etc. 8 is connected. Reference numeral 9 in Figure 16 indicates a cover for the lead wire 4.The cover for the lead wire 4 can be easily removed by attaching hooks to the vehicle body and hooking the hole 7 to these hooks. By providing the pillow-like cushion body 5, the advance detection width l of the contact detection device can be increased.

第７図に示す第３実施例は、フォークリフト１０の後部
両側面と後面側をこの接触検知装置で覆った例を示す。A third embodiment shown in FIG. 7 shows an example in which both rear side surfaces and the rear side of a forklift 10 are covered with this contact detection device.

ここでは、各スリット６で区切られた部＋１同士をチェ
ーン１２で繋いでいる。なお、可撓板１の上端部をマグ
ネットラバーで構成すれば、取付は孔７を形成せずに、
車体に接触検知装置を吸着させて鍬れ下げることができ
る。Here, the sections +1 separated by each slit 6 are connected by a chain 12. Note that if the upper end of the flexible plate 1 is made of magnetic rubber, it can be mounted without forming the hole 7.
The contact detection device can be attached to the vehicle body and the vehicle can be lowered.

スイッチ３の一例としては、第８図に示すように腰の強
いプラスチック製のフィルト３１に導電材料３２を印刷
し、上下の導電材料３２が接触したときに電流が流れる
ように構成しておき、このフィルｌ、３１をコト３３で
１．１１２７Ｕしたものを使用する。As an example of the switch 3, as shown in FIG. 8, a conductive material 32 is printed on a strong plastic filter 31, and a current flows when the upper and lower conductive materials 32 come into contact with each other. This film 1, 31 was modified to 1.1127 U in Coto 33 and used.

なお、ブザー等８を鳴らさずに、点滅灯を点滅させたり
、エンジン又はプレー・１−作動回路にリド線４を接続
しても良い。また、スイッチ３の可撓板ｌへの取イ；１
けは、両面接着テープやビス止め等適宜手段の採用が可
能であり、取外し容易な手段であればスイッチ３の破損
時の取替えも容易となる。Incidentally, without sounding the buzzer or the like 8, a flashing light may be made to blink, or the lid wire 4 may be connected to the engine or the play/1-operation circuit. Also, when removing the switch 3 from the flexible plate l;
Appropriate means such as double-sided adhesive tape or screws can be used for this purpose, and if the switch 3 is easily removed, it can be easily replaced when the switch 3 is damaged.

〔効果〕〔effect〕

以上説明したように、この発明によれば、」二端部を運
搬機械や建設機械等に取付けてこれら機械等から垂れ下
がるゴム板等の可撓板の表側に人や物が接触したときに
撓む半剛性のタッチ板を取付け、可撓板の裏側にタッチ
板に作用した力が可撓板を介して伝達されることにより
感応するスイッチを取イ；１けたので、機械等の機体か
ら接触検知幅を外方へ先行させることができると共に、
半剛性のタッチ仮に人や物が接触するとこの外力が可撓
板を撓めその裏側のスイッチを確実に作用させる。As explained above, according to the present invention, when a person or object comes into contact with the front side of a flexible plate such as a rubber plate whose two ends are attached to a transport machine, a construction machine, etc. and hangs from these machines, A semi-rigid touch plate is installed on the back side of the flexible plate, and a switch is mounted on the back side of the flexible plate, which responds when the force applied to the touch plate is transmitted through the flexible plate. The detection width can be advanced outward, and
Semi-rigid touch If a person or object comes into contact with the flexible plate, this external force will bend the flexible plate and cause the switch on the back side to operate reliably.

また、スイッチが損傷しても、簡単に取り替えることも
できる。可撓板に複数のタッチ板とスイッチを取イ」け
、タッチ板どスイッチの各組の間にスリットを形成した
ものでは、障害物から入る外力が平面的に拡散せず、１
つのスイッチに応力が集中して支障のない障害物は感知
せずに作業性が上がる。さらにまた、機械等に上端部が
取付いて垂れ下がる可撓板の裏側に可撓板の下端部を機
械等の機体から遠ざけるように枕状クッション体を介在
したちのでは、先行検知幅が大きくなると共に、障害物
に強い外力が作用しても、枕状クッション体が緩衝作用
を及ぼしてこの装置の損傷を防止する。Additionally, if the switch is damaged, it can be easily replaced. In a flexible plate with multiple touch plates and switches and slits formed between each set of touch plates and switches, the external force that enters from an obstacle does not spread across the plane;
Stress is concentrated on one switch, and no obstacles are detected, improving work efficiency. Furthermore, if a pillow-like cushion body is interposed on the back side of a flexible plate whose upper end is attached to a machine and hangs down, so as to keep the lower end of the flexible plate away from the body of the machine, etc., the advance detection width becomes large. In addition, even if a strong external force is applied to an obstacle, the pillow-like cushion body exerts a cushioning effect to prevent damage to the device.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の第１実施例を示す斜視図、第２図は
この第１実施例をフォークリフトに取付けた場合の側面
図、第３図は第２図の取付は例において後輪が機体から
はみ出した状態の背面図、第４図は第２実施例を示す側
面図、′ｆ、５図は第４図の背面図、第６図は多数のタ
ッチ板とスイッチを設けた場合の裏側から見た図、第７
図は第３実施例を示す斜視図、第８図は使用するスイッ
チの一例を示す一部破断の斜視図である。 ｌ・・ＴＴＪ４立板、 ２・・・タッチ板、 ３・・・スイッチ。Fig. 1 is a perspective view showing the first embodiment of the present invention, Fig. 2 is a side view of the first embodiment installed on a forklift, and Fig. 3 is a side view of the first embodiment installed on a forklift. Figure 4 is a side view showing the second embodiment, Figure 5 is a rear view of Figure 4, and Figure 6 is a rear view of the state in which it protrudes from the fuselage. View from the back, No. 7
The figure is a perspective view showing the third embodiment, and FIG. 8 is a partially cutaway perspective view showing an example of the switch used. l...TTJ4 standing board, 2...touch board, 3...switch.

Claims (1)

【特許請求の範囲】 １、上端部を運搬機械や建設機械等に取付けてこれら機
械等から垂れ下がるゴム板等の可撓板の表側に人や物が
接触したときに撓む半剛性のタッチ板を取付け、 可撓板の裏側にタッチ板に作用した力が可撓板を介して
伝達されることにより感応するスイッチを取付けたこと
を特徴とする接触検知装置。 ２、可撓板に複数のタッチ板とスイッチを取付け、タッ
チ板とスイッチの各組の間にスリットを形成したことを
特徴とする請求項１に記載の接触検知装置。 ３、機械等に上端部が取付いて垂れ下がる可撓板の裏側
に可撓板の下端部を機械等の機体から遠ざけるように枕
状クッション体を介在したことを特徴とする請求項１ま
たは２に記載の接触検知装置。[Scope of Claims] 1. A semi-rigid touch plate that bends when a person or object comes into contact with the front side of a flexible plate such as a rubber plate whose upper end is attached to a transport machine, construction machine, etc. and hangs from the machine. A contact detection device characterized in that a switch is attached to the back side of the flexible plate and is sensitive to the force acting on the touch plate being transmitted through the flexible plate. 2. The contact detection device according to claim 1, wherein a plurality of touch plates and switches are attached to the flexible plate, and a slit is formed between each set of touch plates and switches. 3. According to claim 1 or 2, a pillow-like cushion body is interposed on the back side of the flexible plate whose upper end is attached to the machine or the like and hangs down so as to keep the lower end of the flexible plate away from the body of the machine or the like. The contact sensing device described.