JPH0334643Y2 - - Google Patents
Info
- Publication number
- JPH0334643Y2 JPH0334643Y2 JP7367884U JP7367884U JPH0334643Y2 JP H0334643 Y2 JPH0334643 Y2 JP H0334643Y2 JP 7367884 U JP7367884 U JP 7367884U JP 7367884 U JP7367884 U JP 7367884U JP H0334643 Y2 JPH0334643 Y2 JP H0334643Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- shielding plate
- receiving element
- tilt
- emitting
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 102100027340 Slit homolog 2 protein Human genes 0.000 description 1
- 101710133576 Slit homolog 2 protein Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003971 tillage Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は例えばトラクタにトツプリンク及びロ
アリンクを介してロータリ耕耘作業機を、或いは
乗用走行車体にトツプリンク及びロアリンクを介
して田植作業機を昇降可能に取付けると共に、前
記作業機の左右方向の傾倒を検出する傾動センサ
と、該センサの出力に基づいてロアリンク等を揺
動させて其の作業機の左右傾斜を略一定に保つ油
圧シリンダ等の角度補正部材を備え、前記作業機
の左右の耕耘深さまたは左右の苗の植付け深さ等
を略等しく保つ装置に関する。[Detailed Description of the Invention] "Industrial Application Field" The present invention can be applied to, for example, a rotary tiller by connecting a tractor with a top link and a lower link, or a rice transplanter by connecting a passenger vehicle with a top link and a lower link. a tilt sensor that detects the tilting of the working machine in the left-right direction, and a hydraulic pressure that swings the lower link etc. based on the output of the sensor to keep the horizontal tilt of the working machine substantially constant. The present invention relates to a device that includes an angle correction member such as a cylinder and maintains the right and left plowing depths or the right and left seedling planting depths of the working machine to be approximately equal.
「従来の技術」
移動農機に牽引リンクを介して農作業機を昇降
可能に取付けると共に、前記農作業機の左右方向
の傾倒を検知する傾動センサの出力に基づいて前
記牽引リンクを揺動させて農作業機の左右傾斜を
略一定に保つ角度補正部材を備えた技術があつ
た。"Prior Art" A farm work machine is attached to a mobile farm machine via a traction link so that it can be raised and lowered, and the traction link is swung based on the output of a tilt sensor that detects tilting of the farm work machine in the left and right direction. There is now a technology that includes an angle correction member that keeps the left and right inclination approximately constant.
「考案が解決しようとする問題点」
前記従来技術では、常に鉛直となるように揺動
自在に遮光板を軸支し、前記遮光板に開設するス
リツトを挾んで傾動検出用の発光及び受光素子を
配設した前記傾動センサを使用していたが、前記
遮光板などの加工組立誤差並びに前記発光及び受
光素子などの品質性能差により、前記遮光板が鉛
直状態で前記センサ出力が予め設定した値と異な
る場合が多く、そのため製造時に複雑な調節操作
を行う必要があると共に、前記傾動センサの分解
修理または交換などを行い難い問題があつた。"Problems to be Solved by the Invention" In the prior art, a light-shielding plate is pivotally supported so as to be swingable so that it is always vertical, and a light-emitting and light-receiving element for detecting tilting is inserted between the slits formed in the light-shielding plate. However, due to processing and assembly errors in the light-shielding plate, etc., and quality performance differences in the light-emitting and light-receiving elements, the sensor output may not reach the preset value when the light-shielding plate is vertical. Therefore, it is necessary to perform complicated adjustment operations during manufacturing, and there are problems in that it is difficult to disassemble, repair, or replace the tilt sensor.
「問題を解決するための手段」
然るに、本考案は、前記遮光板を挾んで中央位
置検出用の発光及び受光素子を対設し、前記遮光
板が鉛直状態のときだけその受光素子により捉え
る発光素子からの光を通過させる中央位置スリツ
トを遮光板に開設したものである。"Means for Solving the Problem" However, the present invention provides a light-emitting and light-receiving element for detecting the center position, which is placed between the light-shielding plates, and detects the light emitted by the light-receiving elements only when the light-shielding plate is in a vertical position. A central slit is provided in the light shielding plate to allow light from the element to pass through.
「作用」
前記遮光板の鉛直位置を中央位置検出用の前記
各素子と中央位置スリツトによつて検出し、この
ときの傾動検出用の前記各素子の傾斜出力と、予
め設定した中央位置（水平位置）における中央値
出力との差を算出することにより、その差を前記
傾斜出力に加算して適正な制御値を得られ、製造
時における前記センサ部の調節操作を従来よりも
極めて簡単に行えると共に、前記遮光板及び各素
子など部品の加工精度の他にバツテリ電源の電圧
降下等も自動的に補正し得るものである。"Function" The vertical position of the light shielding plate is detected by each of the elements for detecting the center position and the center position slit, and the tilt output of each element for detecting the tilt at this time and the preset center position (horizontal By calculating the difference from the median output at the position), the difference can be added to the slope output to obtain an appropriate control value, making adjustment of the sensor section during manufacturing much easier than before. In addition, in addition to the machining accuracy of parts such as the light shielding plate and each element, voltage drop of the battery power supply and the like can be automatically corrected.
「実施例」
以下本考案の実施例を図面に基づいて詳述す
る。第１図は全体の側面図、第２図は要部平面図
であり、移動農機であるトラクタ１の後部に農作
業機であるロータリ耕耘作業機２を装備するもの
で、図中３はエンジン、４はクラツチケース、５
はミツシヨンケース、６は前輪、７は後車軸、８
は後輪、９はPTO軸、１０はリフトアーム１１
及びポジシヨンコントロールレバー１２を備えた
油圧リフト、１３は運転席、１４は操向ハンドル
である。また図中１５は耕耘ロータリ、１６はロ
ータリカバー、１７はメインビーム、１８は尾
輪、１９はデプスアジヤストハンドルである。"Embodiments" Examples of the present invention will be described below in detail based on the drawings. Fig. 1 is an overall side view, and Fig. 2 is a plan view of the main parts, in which a rotary tiller 2, which is an agricultural work machine, is equipped at the rear of a tractor 1, which is a mobile agricultural machine, and 3 in the figure is an engine; 4 is clutch case, 5
is the transmission case, 6 is the front wheel, 7 is the rear axle, 8
is the rear wheel, 9 is the PTO axis, 10 is the lift arm 11
and a hydraulic lift equipped with a position control lever 12, 13 a driver's seat, and 14 a steering handle. Further, in the figure, 15 is a tilling rotary, 16 is a rotary cover, 17 is a main beam, 18 is a tail wheel, and 19 is a depth adjust handle.
そしてトツプリンク２０並びに牽引リンクであ
るロアリンク２１を介してトラクタ１後側に昇降
自在に耕耘作業機２を取付ける。前記トツプリン
ク２０前端を油圧リフト１０後側にトツプリンク
ヒンジ２２を介して連結支持させ、前記作業機２
前端の中央上方部にトツプリンク２０後端を連結
させると共に、ミツシヨンケース５両側の下部隅
部にロアリンクピン２３を介して左右一対のロア
リンク２１，２１前端を連結支持させ、前記作業
機２の前端両側に各ロアリンク２１，２１後端を
連結させる。 The tiller 2 is attached to the rear side of the tractor 1 via a top link 20 and a lower link 21 which is a traction link so that it can be raised and lowered. The front end of the top link 20 is connected and supported to the rear side of the hydraulic lift 10 via a top link hinge 22, and the work machine 2
The rear end of the top link 20 is connected to the central upper part of the front end, and the front ends of the pair of left and right lower links 21, 21 are connected and supported at the lower corners of both sides of the transmission case 5 via lower link pins 23, and the working machine The rear ends of each lower link 21, 21 are connected to both sides of the front end of the lower link 2.
さらに上記油圧リフト１０に設ける左右一対の
リフトアーム１１，１１にリフトロツド２４，２
４上端を連結させ、前記作業機の左右傾斜を略一
定に保つ角度補正部材である油圧シリンダ２５を
右リフトロツド２４下端に一体連設させる一方、
左リフトロツド２４にターンバツクル２６を取付
け、前記油圧シリンダ２５のピストンロツド２７
を右のロアリンク２１中間に連結させ、前記リフ
トロツド２４及び油圧シリンダ２５を用いて右の
リフトアーム１１に右のロアリンク２１を連動連
結し、前記ピストンロツド２７の進退駆動によつ
て右のロアリンク２１だけを単独で揺動させると
共に、前記ロータリ耕耘作業機２のロータリカバ
ー１６上面中央に傾動センサ２８を固設し、作業
機２の左右傾斜を傾動センサ２８によつて検出さ
せるように構成している。 Furthermore, lift rods 24, 2 are attached to the pair of left and right lift arms 11, 11 provided on the hydraulic lift 10.
A hydraulic cylinder 25, which is an angle correction member that connects the upper ends of the right lift rod 24 and keeps the horizontal inclination of the working machine substantially constant, is integrally connected to the lower end of the right lift rod 24;
The turnbuckle 26 is attached to the left lift rod 24, and the piston rod 27 of the hydraulic cylinder 25 is attached.
The right lower link 21 is connected to the middle of the right lower link 21, and the right lower link 21 is interlocked and connected to the right lift arm 11 using the lift rod 24 and the hydraulic cylinder 25. 21 alone, and a tilt sensor 28 is fixedly installed in the center of the upper surface of the rotary cover 16 of the rotary tillage work machine 2, so that the left and right tilt of the work machine 2 is detected by the tilt sensor 28. ing.
また第３図は前記傾動センサ２８構造を示す傾
視図であり、LEDよりなる発光素子２８ａと、
フオトトランジスタよりなる受光素子２８ｂとを
備え、機体の前後方向に対向するように各素子２
８ａ，２８ｂを対設すると共に、この発光及び受
光素子２８ａ，２８ｂ対向間隔間には遮光板２９
が左右方向にだけ揺動自在にその上端にて枢支さ
れている。遮光板２９の枢支軸３０にはオイルダ
ンパ３０ａが装着されており、ロータリ１５の傾
斜角度が変化した場合に遮光板２９が鉛直になつ
て直ちに停止するように遮光板２９の揺動を抑制
している。 Further, FIG. 3 is a perspective view showing the structure of the tilt sensor 28, in which a light emitting element 28a consisting of an LED,
Each element 2 is provided with a light-receiving element 28b made of a phototransistor, and each element 2
8a and 28b, and a light shielding plate 29 is provided between the light emitting and light receiving elements 28a and 28b.
is pivotally supported at its upper end so that it can swing freely only in the left and right directions. An oil damper 30a is attached to the pivot shaft 30 of the light shielding plate 29, and suppresses the swinging of the light shielding plate 29 so that when the inclination angle of the rotary 15 changes, the light shielding plate 29 becomes vertical and immediately stops. are doing.
遮光板２９の傾動検出用発光素子２８ａと受光
素子２８ｂの対向する高さ位置には、スリツト２
９ａが開設されている。該スリツト２９ａは、そ
の開口面積が、左側が大となり、右側になるほど
連続的に小さくなつた横向き扇形状をなし、その
スリツト２９ａの揺動方向中心線は上端の枢支軸
３０を中心とした弧状となつている。従つて発光
素子２８ａが発して受光素子２８ｂが捉える受光
量は第４図に示すように、ロータリ１５の右側が
その左側よりも下方に位置する状態（右傾状態）
では大となり、反対に左側がその右側よりも下方
に位置する状態（左傾状態）では小となつて、そ
の間では連続的に変化する。なお遮光板２９は所
定量以上は揺動しないようになつており、発光素
子が発する光がスリツトを通過しない状態になる
と、それ以上の揺動はなされない。 A slit 2 is provided at a height position where the light-emitting element 28a for tilt detection and the light-receiving element 28b of the light-shielding plate 29 face each other.
9a has been opened. The slit 29a has a horizontal fan shape in which the opening area is larger on the left side and continuously becomes smaller toward the right side, and the center line of the slit 29a in the swinging direction is centered around the pivot shaft 30 at the upper end. It is arc-shaped. Therefore, the amount of light emitted by the light emitting element 28a and received by the light receiving element 28b is determined when the right side of the rotary 15 is located lower than the left side (rightward tilted state), as shown in FIG.
In contrast, it becomes large when the left side is located below the right side (left-leaning state), and it changes continuously in between. The light shielding plate 29 is designed not to swing beyond a predetermined amount, and when the light emitted from the light emitting element does not pass through the slit, it will not swing any further.
また前記遮光板２９を挾んで中央位置検出用の
発光及び受光素子２８ｃ，２８ｄを対設し、前記
遮光板２９が鉛直状態のときにだけその受光素子
２８ｄにより捉える発光素子２８ｃからの光を通
過させる中央位置スリツト２９ｂを遮光板２９に
開設するもので、第４図のように前記受光素子２
８ｄから中央位置入力信号ａを得ることにより、
前記遮光板２９の鉛直状態を検出すると共に、予
め設定している中央値ｂと、傾動検出用の受光素
子２８ｂからの傾斜入力信号の中央値b′とを対比
し、加工組立誤差並びに品質性能差により生じる
検出差ｂ−b′を算出し、その受光素子からの傾斜
入力信号に検出差を加算して制御値を算し得るよ
うに構成している。 Further, light emitting and light receiving elements 28c and 28d for detecting the center position are provided oppositely with the light shielding plate 29 in between, and the light from the light emitting element 28c that is captured by the light receiving element 28d passes through only when the light shielding plate 29 is in a vertical state. A central position slit 29b is provided in the light shielding plate 29 to allow
By obtaining the center position input signal a from 8d,
In addition to detecting the vertical state of the light shielding plate 29, the preset median value b is compared with the median value b' of the tilt input signal from the light receiving element 28b for tilt detection, and processing and assembly errors and quality performance are determined. The control value is calculated by calculating a detected difference b-b' caused by the difference, and adding the detected difference to the tilt input signal from the light receiving element.
次いで第５図に示す如く、前記作業機２の左右
傾斜角度を調節する復動型油圧シリンダ２５に３
位置４ポート型電磁油圧切換弁３１を介して油圧
ポンプ３２を接続させ、前記油圧切換弁３１に此
れを切換える上昇及び下降ソレノイド３１ａ，３
１ｂを備えると共に、前記油圧シリンダ２５に並
行させてリフトアーム１１とロアリンク２１との
間に伸縮自在なリフトリンク３３を介設させ、上
昇及び下降用リミツトスイツチ３３ａ，３３ｂを
前記リフトリンク３３に備え、ロータリ作業機２
を上昇位置に支持している状態で、各リミツトス
イツチ３３ａ，３３ｂの間にリフトリンク３３可
動端を位置させ、トラクタ１に対して作業機を水
平支持するように構成している。 Next, as shown in FIG.
A hydraulic pump 32 is connected through a 4-port electromagnetic hydraulic switching valve 31, and rising and falling solenoids 31a and 3 switch the hydraulic switching valve 31.
1b, a telescopic lift link 33 is interposed between the lift arm 11 and the lower link 21 in parallel with the hydraulic cylinder 25, and the lift link 33 is provided with limit switches 33a and 33b for raising and lowering. , rotary work machine 2
The movable end of the lift link 33 is positioned between each limit switch 33a, 33b while the work machine is supported in the raised position, so that the working machine is supported horizontally with respect to the tractor 1.
第６図は上記油圧シリンダ２５の制御回路図で
あり、上記ポジシヨンコントロールレバー１２操
作による作業機の上昇動作を検出する上昇ポジシ
ヨンスイツチ３４と、上記傾動センサ２８の出力
に基づいて油圧シリンダ２５を作動させる自動ス
イツチ３５と、前記油圧シリンダ２５を手動操作
で作動させる上昇及び下降用手動スイツチ３６
ａ，３６ｂとを備える。そして上記センサ２８並
びに各スイツチ３３ａ〜３６ｂを夫々接続する水
平制御回路３７と、前記回路３７及び上記各ソレ
ノイド３１ａ，３１ｂに電源３８を印加するキー
スイツチ３９とを備えると共に、前記回路３７に
アンドゲート４０，４１を介して前記各ソレノイ
ド３１ａ，３１ｂのドライブ回路４２，４３を
夫々接続させ、また前記各アンドゲート４０，４
１にパルス発振器４４を接続させ、前記回路３７
を介して直接行う連続励磁並びに前記発振器４４
を介して行うパルス（間欠）励磁のいずれかの態
様で各ソレノイド３１ａ，３１ｂを励磁作動する
ように構成するものである。 FIG. 6 is a control circuit diagram of the hydraulic cylinder 25, in which a lift position switch 34 detects the lifting movement of the working machine by operating the position control lever 12, and a lift position switch 34 detects the lifting motion of the working machine by operating the position control lever 12, and the hydraulic cylinder 25 is operated based on the output of the tilt sensor 28. an automatic switch 35 that operates the hydraulic cylinder 25, and a manual switch 36 for raising and lowering that manually operates the hydraulic cylinder 25.
a, 36b. A horizontal control circuit 37 connects the sensor 28 and the switches 33a to 36b, and a key switch 39 applies a power source 38 to the circuit 37 and the solenoids 31a and 31b. , 41 to connect the drive circuits 42, 43 of the solenoids 31a, 31b, respectively, and the AND gates 40, 4.
1 is connected to the pulse oscillator 44, and the circuit 37
Continuous excitation directly via the oscillator 44 as well as the oscillator 44
Each solenoid 31a, 31b is configured to be excited by one of the modes of pulse (intermittent) excitation performed via the solenoid.
本考案は上記の如く構成しており、第７図のフ
ローチヤートに示す通り、キースイツチ３９をオ
ンにした状態で、手動スイツチ３６ａ，３６ｂを
オン操作することにより、上昇または下降ソレノ
イド３１ａ，３１ｂを連続励磁し、手動操作で油
圧シリンダ２５を作動制御し、ロータリ耕耘作業
機２の左右傾斜を任意角度に調節する。 The present invention is constructed as described above, and as shown in the flowchart of FIG. 7, by turning on the manual switches 36a, 36b with the key switch 39 turned on, the ascending or descending solenoids 31a, 31b are activated. The hydraulic cylinder 25 is continuously energized, and the hydraulic cylinder 25 is operated and controlled manually to adjust the left and right inclination of the rotary tiller 2 to an arbitrary angle.
また前記手動スイツチ３６ａ，３６ｂ並びにポ
ジシヨンスイツチ３４がオフのとき、自動スイツ
チ３５のオン操作により、前記作業機が左右水平
で傾動センサ２８の遮光板２９が略鉛直位置のと
き、中央位置検出用の受光素子２８ｄから中央位
置入力信号ａを得ると共に、このときに傾動検出
用の受光素子２８ｂから出力される実中央値
b′と、予め設定している設定中央値ｂとの差ｂ−
b′を算出し、耕耘作業中における傾動検出用の受
光素子２８ｂからの傾斜入力信号に前記の差ｂ−
b′を加算して制御値を得るもので、その制御値に
基づいて上昇または下降ソレノイド３１ａ，３１
ｂをパルス励磁し、上記油圧シリンダ２５による
作業機２の水平制御動作を行わせるものである。 Further, when the manual switches 36a, 36b and the position switch 34 are off, the automatic switch 35 is turned on, and when the working machine is horizontal horizontally and the light shielding plate 29 of the tilt sensor 28 is in a substantially vertical position, the center position detection is performed. At the same time, the center position input signal a is obtained from the light receiving element 28d of
The difference between b' and the preset median value b -
b' is calculated, and the difference b-
b' is added to obtain the control value, and based on the control value, the ascending or descending solenoids 31a, 31
b is pulse-excited to cause the hydraulic cylinder 25 to horizontally control the working machine 2.
「考案の効果」
以上実施例から明らかなように本考案は、常に
鉛直となるように揺動自在に遮光板２９を軸支
し、前記遮光板２９に開設するスリツト２９ａを
挾んで傾動検出用の発光及び受光素子２８ａ，２
８ｂを配設した傾斜検出装置において、前記遮光
板２９を挾んで中央位置検出用の発光及び受光素
子２８ｃ，２８ｄを対設し、前記遮光板２９が鉛
直状態のときにだけその受光素子２８ｄにより捉
える発光素子２８ｃからの光を通過させる中央位
置スリツト２９ｂを遮光板２９に開設したもの
で、前記遮光板２９の鉛直位置を中央位置検出用
の前記各素子２８ｃ，２８ｄと中央位置スリツト
２９ｂによつて検出し、このときの傾動検出用の
前記各素子２８ａ，２８ｂの傾斜出力と、予め設
定した中央位置（水平位置）における中央値出力
との差を算出することにより、その差を前記傾斜
出力に加算して適正な制御値を得ることができ、
製造時における前記センサ２８部の調節操作を従
来よりも極めて簡単に行うことができると共に、
前記遮光板２９及び各素子２８ａ〜２８ｄなど部
品の加工精度の他にバツテリ電源３８の電圧降下
等も自動的に補正することができ、従来に比べて
簡単な調節操作で前記遮光板２９及び各素子２８
ａ〜２８ｄの組立並びに修理交換を行うことがで
き、従来よりも安全で簡便に取扱うことができる
等の実用的な効果を奏するものである。"Effects of the Invention" As is clear from the above embodiments, the present invention pivots the light-shielding plate 29 so as to be swingable so that it is always vertical, and the slit 29a formed in the light-shielding plate 29 is sandwiched between the slits 29a for detecting tilting. The light emitting and light receiving elements 28a, 2
8b, light-emitting and light-receiving elements 28c and 28d for central position detection are provided oppositely with the light-shielding plate 29 in between, and only when the light-shielding plate 29 is in a vertical state, the light-receiving element 28d A central position slit 29b is provided in the light shielding plate 29 through which the light from the light emitting element 28c to be captured passes. By calculating the difference between the tilt output of each of the elements 28a and 28b for tilt detection at this time and the median output at a preset center position (horizontal position), the difference is calculated as the tilt output. An appropriate control value can be obtained by adding
The adjustment operation of the sensor 28 portion during manufacturing can be performed much more easily than before, and
In addition to the machining accuracy of parts such as the light shielding plate 29 and each of the elements 28a to 28d, the voltage drop of the battery power supply 38, etc. can be automatically corrected. element 28
It is possible to assemble and repair and replace parts a to 28d, and it has practical effects such as being safer and easier to handle than before.
第１図は本考案の一実施例を示す全体の側面
図、第２図は要部平面図、第３図は傾動センサの
要部斜視図、第４図はその出力線図、第５図は水
平制御用の油圧回路図、第６図は同電気回路図、
第７図はフローチヤートである。
２８ａ，２８ｃ……発光素子、２８ｂ，２８ｄ
……受光素子、２９……遮光板、２９ａ……スリ
ツト、２９ｂ……中央位置スリツト。
Fig. 1 is an overall side view showing an embodiment of the present invention, Fig. 2 is a plan view of the main part, Fig. 3 is a perspective view of the main part of the tilt sensor, Fig. 4 is its output diagram, and Fig. 5. Figure 6 is the hydraulic circuit diagram for horizontal control, and Figure 6 is the electrical circuit diagram.
FIG. 7 is a flowchart. 28a, 28c... Light emitting element, 28b, 28d
... Light receiving element, 29 ... Light shielding plate, 29a ... Slit, 29b ... Central position slit.
Claims (1)
し、前記遮光板に開設するスリツトを挾んで傾動
検出用の発光及び受光素子を配設した傾斜検出装
置において、前記遮光板を挾んで中央位置検出用
の発光及び受光素子を対設し、前記遮光板が鉛直
状態のときにだけその受光素子により捉える発光
素子からの光を通過させる中央位置スリツトを遮
光板に開設したことを特徴とする傾斜検出装置。 In a tilt detection device, a light shielding plate is pivotally supported so as to be swingable so as to be always vertical, and a light emitting and light receiving element for detecting tilting is arranged between a slit formed in the light shielding plate, and a light emitting and light receiving element for tilt detection is arranged. Light-emitting and light-receiving elements for central position detection are provided opposite each other, and a center-position slit is provided in the light-shielding plate through which light from the light-emitting element that is captured by the light-receiving element passes only when the light-shielding plate is in a vertical state. Tilt detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7367884U JPS60185209U (en) | 1984-05-18 | 1984-05-18 | Tilt detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7367884U JPS60185209U (en) | 1984-05-18 | 1984-05-18 | Tilt detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60185209U JPS60185209U (en) | 1985-12-09 |
| JPH0334643Y2 true JPH0334643Y2 (en) | 1991-07-23 |
Family
ID=30613263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7367884U Granted JPS60185209U (en) | 1984-05-18 | 1984-05-18 | Tilt detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60185209U (en) |
-
1984
- 1984-05-18 JP JP7367884U patent/JPS60185209U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60185209U (en) | 1985-12-09 |
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