JP6516421B2 - Safety device using an ultrasonic distance meter unit mounted on a vehicle and a distance meter - Google Patents

Safety device using an ultrasonic distance meter unit mounted on a vehicle and a distance meter Download PDF

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JP6516421B2
JP6516421B2 JP2014156452A JP2014156452A JP6516421B2 JP 6516421 B2 JP6516421 B2 JP 6516421B2 JP 2014156452 A JP2014156452 A JP 2014156452A JP 2014156452 A JP2014156452 A JP 2014156452A JP 6516421 B2 JP6516421 B2 JP 6516421B2
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ultrasonic sensor
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JP2016033486A (en
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谷口　真一
真一 谷口
重森　巧
巧 重森
浩二 野口
浩二 野口
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Nippon Ceramic Co Ltd
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この発明は、車両に取り付けられた超音波式の距離計ユニットと、それを利用した安全装置に関するものである。
The present invention relates to an ultrasonic distance meter unit attached to a vehicle and a safety device using the same.

超音波式の距離計ユニットを車両に取り付けて、車両に物体が接近した際に運転者に衝突の危険を知らせる安全装置が広く使用されている。
特に、車両を後退させる際に後方の物体を超音波式の距離計ユニットで検出し、運転手に物体の接近を知らせる安全装置がよく利用されている。（例えば特許文献１） There are widely used safety devices that attach an ultrasonic distance meter unit to a vehicle and notify the driver of a danger of collision when an object approaches the vehicle.
In particular, a safety device that detects an object behind the vehicle with an ultrasonic distance meter unit and notifies the driver of the approach of the object is often used when moving the vehicle backward. (For example, Patent Document 1)

超音波式の距離計ユニットで物体までの距離を検出し、車両と物体が衝突の可能性がある距離まで接近すると、物体の接近を運転手にブザーで知らせる安全装置の他に、車両の超音波センサを取り付けて、車両の前方に障害物があると車両が発進しないようブレーキが動作する安全装置が発明されている。 In addition to the safety device that informs the driver of the approach of the object with a buzzer when the distance to the object is detected with an ultrasonic distance meter unit and the vehicle and the object approach a distance that may cause a collision, A safety device has been invented in which a sound wave sensor is attached and the brake operates so that the vehicle does not start if there is an obstacle in front of the vehicle.

ここで使用される超音波式の距離計ユニットでは主に密閉型の超音波センサが使用されている。密閉型の超音波センサは例えば特許文献２で紹介されている（文献中では密閉型の超音波センサを防滴型超音波送受波器とよんでいる）。密閉側の超音波センサは有底筒状ケースの底面に、両面に電極が施された圧電素子を接着し、圧電素子の電極に繋がる端子を外部に取り出し、圧電素子の上部に吸音材をかぶせてから、シリコーンなどの充填剤で密閉した構造である。背面がシリコーンなどの充填剤で完全に覆われることで内部に水が浸入しない構造になっている。そのため、水がかかるような屋外でも使用できる。圧電素子が金属のケースで覆われるために、比較的強度が高い構造のセンサである。
In the ultrasonic distance meter unit used here, a sealed ultrasonic sensor is mainly used. A closed type ultrasonic sensor is introduced, for example, in Patent Document 2 (in the document, the closed type ultrasonic sensor is called a drip-proof type ultrasonic transducer). The ultrasonic sensor on the closed side bonds the piezoelectric element with electrodes on both sides to the bottom of the bottomed cylindrical case, takes out the terminal connected to the electrode of the piezoelectric element outside, and covers the sound absorbing material on the top of the piezoelectric element Then, the structure is sealed with a filler such as silicone. By completely covering the back surface with a filler such as silicone, water does not penetrate inside. Therefore, it can be used outdoors where it gets wet. Since the piezoelectric element is covered with a metal case, the sensor has a relatively high strength.

密閉側の超音波センサの特徴は、有底筒状ケースの内部形状を変えることで比較的自由に指向性を調整できる点にある。つまり物体を検知する範囲を設計段階で調整できる。乗用車に取り付ける超音波センサでは水平方向は広い範囲を検出するように広い指向性をもち、垂直方向は縁石や地面を検出しないように狭い指向性をもつように内部形状が設計されている。 The characteristic of the ultrasonic sensor on the closed side is that the directivity can be adjusted relatively freely by changing the internal shape of the bottomed cylindrical case. In other words, the range in which an object is detected can be adjusted at the design stage. The ultrasonic sensor attached to a passenger car is designed to have a wide directivity so as to detect a wide range in the horizontal direction, and an inner shape designed so as to have a narrow directivity so as not to detect a curb or the ground in the vertical direction.

乗用車以外の車両でも安全装置として超音波式の距離計ユニットの需要が見込まれている。
例えば、荷物運搬用のハンドリフトや、近年発明されたスライド機構を有する給電装置での使用が考えられる（特許文献３）。これらの車両は地面と荷物（または車両）の隙間に差し込んで使用される。地面と荷物（または車両）の隙間は、車両を操作する運転手にとって死角となるので、障害物があった場合に衝突を防止する安全装置が求められる。
The demand for ultrasonic distance meters as safety devices is also expected for vehicles other than passenger cars.
For example, use in a power supply device having a hand lift for carrying a load or a slide mechanism invented in recent years can be considered (Patent Document 3). These vehicles are used by being inserted into the gap between the ground and the load (or vehicle). Since the gap between the ground and the load (or vehicle) is a blind spot for the driver operating the vehicle, a safety device is required to prevent a collision when there is an obstacle.

特開２００７−１１２２９７JP 2007-112297 特開２０１０−１５４０５９JP, 2010-154059, A 特開２０１４−１１７０５８JP 2014-117058

本発明は、ハンドリフトまたはスライド機構を有する給電装置のように、低い位置（つまり地面に近い位置）に超音波センサを設置する超音波式の距離計ユニットとそれを利用した安全装置に生じる問題を解決するものである。 The present invention relates to an ultrasonic range finder unit in which an ultrasonic sensor is installed at a low position (i.e., a position close to the ground) and a safety device using the same as a power supply device having a hand lift or slide mechanism. Solve the problem.

車両の低い位置に超音波センサを設置した場合、主につぎの２つの問題が生じる。 When the ultrasonic sensor is installed at a low position of the vehicle, the following two problems occur.

まずは第一に、超音波センサを低い位置に設置すると、地面からの反射波を受信して本来検知したい障害物を検知できなくなる問題が生じる。
もっとも多く取り付けられている乗用車では取付位置が地面から５０〜６０ｃｍの位置である。一方、ハンドリフトやスライド機構を有する給電装置では、狭い場所に差し込んで使用されるだけに高さが低い。そのため、超音波センサの取り付け位置も低くなる。乗用車の１／５程度の高さに設置される。先に説明したように、密閉側の超音波センサは設計時にある程度自由に指向性を設計できる。指向性が狭くなるように設計できるが、検知範囲は対称であるために地面を検知しないように検知範囲を狭くすると、上側の検知範囲も狭くなってしまう。上側の検知範囲が狭いと上部からの物体の接近を検知できなくなる。 First of all, when the ultrasonic sensor is installed at a low position, there arises a problem that it is not possible to receive a reflected wave from the ground and to detect an obstacle which is originally desired to be detected.
The mounting position is 50 to 60 cm from the ground in the most mounted cars. On the other hand, in a power supply apparatus having a hand lift and a slide mechanism, the height is low because it is inserted into a narrow place and used. Therefore, the mounting position of the ultrasonic sensor also becomes lower. It will be installed at about 1/5 the height of a passenger car. As described above, the ultrasonic sensor on the closed side can be designed for directivity to some extent at design time. Although the directivity can be designed to be narrow, if the detection range is narrowed so as not to detect the ground because the detection range is symmetrical, the upper detection range is also narrowed. If the upper detection range is narrow, the approach of the object from the upper part can not be detected.

つぎの問題は、超音波センサを低い位置に取り付けると、超音波センサが物体に衝突して故障するリスクが増えることである。使用されていないハンドリフトや給電装置は低い位置にあり人間の死角になりやすい。そのため意図せずにぶつかってしまう確立が高くなる。大きな車の５０〜６０ｃｍの高さに取り付けられた超音波センサに気付かずにぶつかる機会は頻繁に無いが、足元の突起物にぶつかってしまうことはよくある。密閉側の超音波センサは比較的強度が高いセンサではあるが、過度に強い力が加わると故障してしまう。 The next problem is that mounting the ultrasonic sensor at a low position increases the risk of the ultrasonic sensor colliding with the object and causing failure. Hand lifts and feeders that are not used are at low positions and are likely to be blind spots for humans. As a result, the probability of being unintentionally hit increases. There is not a frequent chance to notice an ultrasonic sensor attached to the height of 50 to 60 cm of a large car, but it often strikes a protrusion on the foot. Although the ultrasonic sensor on the closed side is a sensor with relatively high strength, it will fail if an excessively strong force is applied.

その他に、ハンドリフトや給電装置は野外でも使用されるために、雨、水に強い設計が求められる。
In addition, since the handlift and the feeder are used outdoors, a design that is resistant to rain and water is required.

請求項１の発明では、車両の側面に取り付けられたカバーと、前述カバーに取り付けられた密閉型の超音波センサと、前述の超音波センサを制御する回路とからなる超音波式の距離計ユニットにおいて、前述カバーが前述超音波センサを設置する穴の上部と左右に外側に広がる勾配をもつ壁と、前述超音波センサを設置する穴の下部が切れ落ちた形状と、前述超音波センサを設置する穴の全周が周囲より飛び出した突出部とを有し、前述超音波センサが斜め上を向けて設置されたことを特徴とする超音波式の距離計ユニットを提供する。 According to the invention of claim 1, an ultrasonic distance meter unit comprising a cover attached to the side of a vehicle, a closed type ultrasonic sensor attached to the above cover, and a circuit for controlling the above ultrasonic sensor. In the above, the cover has a wall with a slope extending outward to the upper part and the left and right of the hole for installing the ultrasonic sensor, a shape in which the lower part of the hole for installing the ultrasonic sensor is cut off, and the ultrasonic sensor is installed According to the present invention, there is provided an ultrasonic rangefinder unit characterized in that the entire circumference of the hole to be projected has a projection projecting from the periphery, and the above-mentioned ultrasonic sensor is installed obliquely upward.

車両に凹みのあるカバーを設置し、カバーの凹みに超音波センサを設置することで車などが直接超音波センサを接触する可能性を減らす。超音波センサを斜め上を向けてカバーに設置することで地面から反射波による誤検知を防止する。超音波センサとクッションを周囲よりも突出させて、超音波センサの下側を、切れ落ちた形状にすることで雨水で超音波センサが水没し誤検知することを防ぐことができる。
By installing a cover with a recess in the vehicle and installing an ultrasonic sensor in the recess of the cover, the possibility of a car or the like coming into direct contact with the ultrasonic sensor is reduced. By placing the ultrasonic sensor diagonally upward on the cover, false detection due to reflected waves from the ground is prevented. The ultrasonic sensor and the cushion are made to project beyond the surroundings, and by making the lower side of the ultrasonic sensor a broken shape, it is possible to prevent the ultrasonic sensor from being submerged in rainwater and erroneously detecting it.

請求項２の発明では、前述超音波式の距離計ユニットが、ブレーキまたは警戒音を発するブザーと、を制御する回路部とつながり、前述超音波式の距離計ユニットがあらかじめきめられた距離まで物体が接近していることを検知すると、ブレーキを動作させて車両を停止させるかまたはブザーのから警戒音を発し運転者に衝突の危険を知らせる安全装置
In the invention of claim 2, the ultrasonic distance meter unit is connected to a circuit unit that controls a brake or a buzzer for generating a warning sound, and an object up to a predetermined distance of the ultrasonic distance meter unit is determined. When it is detected that the vehicle is approaching, the safety device operates the brake to stop the vehicle or emits a warning sound from the buzzer to notify the driver of the danger of collision.

本発明を実施した超音波式の距離計ユニットを取り付けたスライド機構を有する給電装置POWER SUPPLY DEVICE HAVING SLIDE MECHANISM MOUNTED WITH ULTRASONIC TYPE DISTANCE METER センサ取付角度による検出範囲の違いDifference in detection range depending on sensor mounting angle 本発明を実施した超音波式の距離計ユニットを構成するカバーA cover constituting an ultrasonic distance meter unit embodying the present invention 本発明を実施した超音波式の距離計ユニットを取り付けたスライド機構を有する給電装置を横からみた図A lateral view of a power supply apparatus having a slide mechanism attached with an ultrasonic distance meter unit according to the present invention

図１に本発明を実施した超音波式の距離計ユニットを取り付けたスライド機構を有する給電装置を示す。 FIG. 1 shows a power supply apparatus having a slide mechanism attached with an ultrasonic distance meter unit according to the present invention.

図１に示す給電装置１は、地面に敷かれたレール２にそって停車した車体下の所定の位置まで移動し、車体に給電するものである。給電装置２は上から見ると四角い形をしている。４つの側面をもつ。側面は横方向の長さに比べて高さが低くなっている。車体の下に入れるために高さが低くなっている。移動方向の側面に本発明を実施した超音波式の距離計ユニットのカバー３と密閉型の超音波送センサ４が取り付けられている。カバーは両端の角に１つずつ計２つ取り付けられている。 The power feeding device 1 shown in FIG. 1 moves along a rail 2 laid on the ground to a predetermined position below the vehicle body stopped and feeds power to the vehicle body. The feeding device 2 has a square shape when viewed from above. It has four sides. The side is lower in height than the lateral length. The height is lowered to be placed under the car body. The cover 3 of the ultrasonic distance meter unit according to the present invention and the sealed ultrasonic transmission sensor 4 are attached to the side surface in the moving direction. Two covers, one at each end of the cover.

後述するように超音波センサ４は、放射面４ａが斜め上を向くようにカバー３に設置されている。超音波センサ４を斜め上を向けて設置すると検知範囲が斜め上側に偏る。図２に進行方向正面に向けて超音波センサ３を設置した場合と、斜め上を向けて設置した場合の検知範囲７を示す。正面を向けた場合は、地面５の方向と車体６の方向に均等に検知範囲が広がる。このため、指向性が広いと地面５を検知してしまい本来検知したい障害物を検出できなくなる。指向性が狭いと上部にある障害物を検出できなくなる。一方、超音波センサ４を斜め上に向けると検知範囲７が上方向に偏るため、地面を検出することなく前方と上部の障害物を検出できるようになる。 As described later, the ultrasonic sensor 4 is installed on the cover 3 so that the radiation surface 4a is directed obliquely upward. When the ultrasonic sensor 4 is installed obliquely upward, the detection range is biased obliquely upward. FIG. 2 shows detection ranges 7 in the case where the ultrasonic sensor 3 is installed toward the front of the traveling direction and in the case where the ultrasonic sensor 3 is installed obliquely upward. When the front is directed, the detection range is equally spread in the direction of the ground 5 and the direction of the vehicle body 6. For this reason, if the directivity is wide, the ground 5 is detected and it becomes impossible to detect an obstacle which it is desired to detect. If the directivity is narrow, the obstacle at the top can not be detected. On the other hand, when the ultrasonic sensor 4 is directed obliquely upward, the detection range 7 is biased upward, so that obstacles in front and in the upper part can be detected without detecting the ground.

図３に給電装置１の側面に取り付けられたカバー３と超音波センサ４を示す。図３は図１の右側のカバー３を拡大した図である。 The cover 3 and the ultrasonic sensor 4 attached to the side of the electric power feeder 1 are shown in FIG. FIG. 3 is an enlarged view of the cover 3 on the right side of FIG.

カバー３は、給電装置１の角を覆うように取り付けられている。カバー３は給電装置１の側面１ａ、上面１ｂ、正面１ｃを覆っている。カバー正面に密閉型の超音波センサ４が取り付けられている。超音波センサ４が取り付けられた場所は周囲よりへこんでいる。凹み３ａには斜め上を向いた平面３ｂが設けられている。斜め上を向いた平面３ｂに超音波センサ４を取り付ける穴が設けられている。超音波送センサ４がクッション８を介してカバー３に設けられた穴に取り付けられている。超音波センサの放射面４ａとクッション８は、斜め上を向いた平面３ｂから少し飛び出している。斜め上を向いた平面３ｂからの飛び出し量はほぼ同じになっている。超音波センサ４を挿入する穴の周辺が突出し突出部３ｆを形成し、クッション側面の全周を覆っている。超音波センサは放射面４ａが斜め上を向いた平面３ｂに並行に取り付けられている。超音波センサ４の上部と左右両側が上部の壁３ｃと左右に壁３ｄに囲まれている。上部と左右両側の壁３ｃ、３ｄには凹み３ａの外側に向けて広がるように勾配が設けられている。超音波センサ４の下側（地面側）の平面の先が、超音波センサの放射面４ａと平面３ｂより切れ落ちた傾斜部３ｅを有する。 The cover 3 is attached so as to cover the corners of the power supply device 1. The cover 3 covers the side surface 1 a, the upper surface 1 b, and the front surface 1 c of the power feeding device 1. A sealed ultrasonic sensor 4 is attached to the front of the cover. The location where the ultrasonic sensor 4 is attached is recessed from the surroundings. The recess 3a is provided with a flat surface 3b facing obliquely upward. A hole for attaching the ultrasonic sensor 4 is provided on a plane 3b facing obliquely upward. An ultrasonic feed sensor 4 is attached to a hole provided in the cover 3 via a cushion 8. The radiation surface 4a of the ultrasonic sensor and the cushion 8 slightly protrude from the plane 3b facing obliquely upward. The amount of projection from the plane 3b facing obliquely upward is almost the same. The periphery of the hole into which the ultrasonic sensor 4 is inserted protrudes to form a protrusion 3 f and covers the entire periphery of the cushion side surface. The ultrasonic sensor is mounted parallel to a flat surface 3b in which the radiation surface 4a faces obliquely upward. The upper portion and the left and right sides of the ultrasonic sensor 4 are surrounded by the upper wall 3 c and the left and right walls 3 d. The upper and left and right side walls 3c, 3d are provided with a slope so as to extend outward of the recess 3a. The tip of the lower surface (ground side) of the ultrasonic sensor 4 has an inclined portion 3e which is cut off from the radiation surface 4a and the flat surface 3b of the ultrasonic sensor.

超音波センサ４は、超音波センサ４を制御する回路に接続されている（回路は図に示されていない）。回路からの信号で超音波センサ４から超音波を発生させる。物体に反射して返ってきた超音波を同超音波センサ４で受信し、受信した信号を回路で処理し超音波が反射した物体までの距離を測る。反射物と給電装置１が接触する危険のある距離まで近づくと、給電装置１のブレーキを動作させて給電装置１の移動を自動的に停止させることができる。または、給電装置１の運転者に衝突の危険があることをブザーで知らせることができる。 The ultrasonic sensor 4 is connected to a circuit that controls the ultrasonic sensor 4 (the circuit is not shown in the figure). An ultrasonic wave is generated from the ultrasonic sensor 4 by a signal from the circuit. The ultrasonic wave reflected from the object is received by the ultrasonic wave sensor 4, and the received signal is processed by a circuit to measure the distance to the object reflected by the ultrasonic wave. When the distance between the reflector and the power supply device 1 is approached, the brake of the power supply device 1 can be operated to automatically stop the movement of the power supply device 1. Alternatively, the buzzer of the driver of the power supply device 1 can notify that there is a danger of collision.

カバー３は、使用していない給電装置１に車などがぶつかってきた際に給電装置１を保護する役目も果たす。カバー３に設置された超音波センサ４と車などが直接接触すると超音波センサ４が故障する可能性がある。超音波センサ４と車などが直接接触することを防ぐために超音波センサ４はカバーの凹み３ａに設置されている。超音波センサの上部、左右の壁３ｂ、３ｃが障壁となって車などが直接超音波センサ４に接触することを防ぐことができる。図４に給電装置１を横からみた図を示す。横から見ると超音波センサ１はカバーが壁となって隠れて見えなくなる。カバー３が障壁となって車のタイヤなどが超音波センサ４と接触することを防いでいる。 The cover 3 also serves to protect the feeding device 1 when a car or the like hits the feeding device 1 not in use. Direct contact between the ultrasonic sensor 4 installed on the cover 3 and a car or the like may cause the ultrasonic sensor 4 to break down. The ultrasonic sensor 4 is installed in the recess 3a of the cover in order to prevent the ultrasonic sensor 4 and the vehicle from coming into direct contact with each other. The upper portion of the ultrasonic sensor and the left and right walls 3b and 3c serve as barriers to prevent a car or the like from coming into direct contact with the ultrasonic sensor 4. The figure which saw the electric power feeder 1 in FIG. 4 from the side is shown. When viewed from the side, the ultrasonic sensor 1 is hidden by the cover as a wall. The cover 3 serves as a barrier to prevent a car tire or the like from coming into contact with the ultrasonic sensor 4.

上部と左右の壁３ｂ、３ｃに超音波が反射しないように、上側と左右の壁３ｂ、３ｃに外側に広がる勾配を設けている。 The upper and left and right walls 3b and 3c are provided with an outwardly extending gradient so that the upper and left and right walls 3b and 3c do not reflect ultrasonic waves.

超音波センサ４とクッション８のまわりを周囲の平面より高くし、超音波センサ４を取り付けた平面３ｂの下側が切れ落ちたカバー形状にすることで、 雨水が超音波センサの放射面４ａを覆うことなく地面に排水される。超音波センサの放射面４ａに水がたまると超音波センサ４ａの放射面から発生する超音波が弱くなる。または、残響特性に影響することがわかっている。超音波センサ４を上に向けると周囲から流れ込んだ水が超音波センサの放射面４ａを覆ってしまうことがある。超音波センサ４とクッション８のまわりを周囲の平面より高くすることで、平面に流れ込んだ水は超音波センサ４とクッション８のまわりを通って、切り落ちたカバーの下に排水される。雨水による超音波センサ４の不具合を防ぐ効果が得られる。 Rainwater covers the radiation surface 4a of the ultrasonic sensor by making the circumference of the ultrasonic sensor 4 and the cushion 8 higher than the surrounding plane and forming a cover shape in which the lower side of the plane 3b to which the ultrasonic sensor 4 is attached is cut off. Without being drained to the ground. When water accumulates on the radiation surface 4a of the ultrasonic sensor, the ultrasonic waves generated from the radiation surface of the ultrasonic sensor 4a become weak. Or it is known to affect the reverberation characteristics. When the ultrasonic sensor 4 is directed upward, water flowing from the surroundings may cover the radiation surface 4a of the ultrasonic sensor. The water flowing into the flat surface passes around the ultrasonic sensor 4 and the cushion 8 and is drained under the cut-off cover by raising the circumference of the ultrasonic sensor 4 and the cushion 8 above the surrounding flat surface. The effect of preventing the failure of the ultrasonic sensor 4 due to rain water can be obtained.

本発明を給電装置、ハンドリフト以外の車両にも取り付けることがなどが考えらえる。 It is conceivable to attach the present invention to a vehicle other than the power feeding device and the hand lift.

カバーに設けられた超音波センサの上部を囲う壁３ｃとカバーに設けられた超音波センサの左右を囲う壁３ｅの間の角を丸められて円弧上にしてもよい。 The corner between the wall 3c surrounding the upper part of the ultrasonic sensor provided on the cover and the wall 3e surrounding the left and right of the ultrasonic sensor provided on the cover may be rounded to form an arc.

カバーに設けられた超音波センサを設置する穴を囲う突出部３ｆが、カバーとは別体で、カバーに後から取り付けられたものでもよい。 The protrusion 3 f surrounding the hole for installing the ultrasonic sensor provided in the cover may be separate from the cover and later attached to the cover.

１ 給電装置
１ａ 給電装置の側面
１ｂ 給電装置の上面
１ｃ 給電装置の正面
２ レール
３ カバー
３ａ カバーの凹み
３ｂ カバー凹みに設けら斜め上を向いた平面
３ｃ カバーに設けられた超音波センサの上部を囲う壁
３ｄ カバーに設けられた超音波センサの左右を囲う壁
３ｅ カバーに設けられた超音波センサの下部の傾斜部
３ｆ カバーに設けられた超音波センサを設置する穴を囲う突出部
４ 超音波センサ
４ａ 超音波センサの放射面
５ 地面
６ 車体
７ 検出範囲
８ クッション 1 power feeding device 1a side surface 1b of power feeding device top surface 1c of power feeding device front 2 of power feeding device 2 rail 3 cover 3a cover recess 3b cover recess 3b cover recess plane 3c flat top facing ultrasonic sensor top of ultrasonic sensor Surrounding wall 3d Wall 3e surrounding the left and right sides of the ultrasonic sensor provided on the cover 3d of the ultrasonic sensor provided on the cover inclined portion 3f at the bottom of the cover Projection 4 surrounding the hole for installing the ultrasonic sensor provided on the cover Sensor 4a Ultrasonic sensor emission surface 5 Ground 6 Body 7 Detection range 8 Cushion

１ 給電装置
１ａ 給電装置の側面
１ｂ 給電装置の上面
１ｃ 給電装置の正面
２ レール
３ カバー
３ａ カバーの凹み
３ｂ カバー凹みに設けら斜め上を向いた平面
３ｃ カバーに設けられた超音波センサの上部を囲う壁
３ｄ カバーに設けられた超音波センサの左右を囲う壁
３ｅ カバーに設けられた超音波センサの下部の傾斜部
３ｆ カバーに設けられた超音波センサを設置する穴を囲う突出部
４ 超音波センサ
４ａ 超音波センサの意正面
５ 地面
６ 車体
７ 検出範囲
８ クッション 1 power feeding device 1a side surface 1b of power feeding device top surface 1c of power feeding device front 2 of power feeding device 2 rail 3 cover 3a cover recess 3b cover recess 3b cover recess plane 3c flat top facing ultrasonic sensor top of ultrasonic sensor Surrounding wall 3d Wall 3e surrounding the left and right sides of the ultrasonic sensor provided on the cover 3d of the ultrasonic sensor provided on the cover inclined portion 3f at the bottom of the cover Projection 4 surrounding the hole for installing the ultrasonic sensor provided on the cover Sensor 4a Ultrasonic sensor at the front 5 Ground 6 Car body 7 Detection range 8 Cushion

Claims (2)

車両の側面に取り付けられたカバーと、前述カバーに取り付けられた密閉型の超音波センサと、前述の超音波センサを制御する回路とからなる超音波式の距離計ユニットにおいて、前述カバーが前述超音波センサを設置する穴の上部と左右に外側に広がる勾配をもつ壁と、前述超音波センサを設置する穴の下部が切れ落ちた形状と、前述超音波センサを設置する穴の全周が周囲より飛び出した突出部とを有し、前述超音波センサが斜め上を向けて設置され、前述超音波センサのまわりの水を地面に排水するために備えられたことを特徴とする超音波式の距離計ユニット An ultrasonic rangefinder unit comprising a cover attached to the side of a vehicle, a closed ultrasonic sensor attached to the cover, and a circuit for controlling the ultrasonic sensor The upper part of the hole where the sound wave sensor is installed and the wall with a gradient that spreads outward to the left and right, the shape where the lower part of the hole where the ultrasonic sensor is set is cut off And an ultrasonic sensor having the above-mentioned ultrasonic sensor installed diagonally upward and provided to drain water around the ultrasonic sensor to the ground . Distance meter unit 請求項１に記載の超音波式の距離計ユニットが、ブレーキまたは警戒音を発するブザーとを制御する回路部とつながり、 前述超音波式の距離計ユニットがあらかじめきめられた距離まで物体が接近していることを検知すると、 ブレーキを動作させて車両を停止させるかまたはブザーから警戒音を発し運転者に衝突の危険を知らせる安全装置
 The ultrasonic distance meter unit according to claim 1 is connected to a circuit unit that controls a brake or a buzzer that emits a warning sound, and an object approaches the distance determined in advance by the ultrasonic distance meter unit. If it detects that it is, the safety device operates the brake to stop the vehicle or emits a warning sound from the buzzer to notify the driver of the danger of collision
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JPH0754868Y2 (en) * 1989-07-25 1995-12-18 閑次 瀧澤 Intrusion detection sensor
US5303205A (en) * 1990-02-26 1994-04-12 Trend Tec Inc. Vehicular distance measuring system with integral mirror display
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JPH08163678A (en) * 1994-12-08 1996-06-21 Aichi Mach Ind Co Ltd Front shape of housing for ultrasonic sensor
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