JP2842554B2 - Switch device - Google Patents
Switch deviceInfo
- Publication number
- JP2842554B2 JP2842554B2 JP63135094A JP13509488A JP2842554B2 JP 2842554 B2 JP2842554 B2 JP 2842554B2 JP 63135094 A JP63135094 A JP 63135094A JP 13509488 A JP13509488 A JP 13509488A JP 2842554 B2 JP2842554 B2 JP 2842554B2
- Authority
- JP
- Japan
- Prior art keywords
- receiving surface
- base plate
- pressure receiving
- plate
- push button
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Push-Button Switches (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、温水洗浄便器の便座における押しボタン
型スイッチに関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button type switch in a toilet seat of a hot water flush toilet.
従来の押しボタン型スイッチは第11図及び第12図に示
すように、受圧面100を押圧すると開閉動作するように
構成され、この受圧面100の面積は比較的小さいもので
あった。このような押しボタン型スイッチを温水洗浄便
器の便器本体101の便座102に取付け、人が座ると人の荷
重でスイッチが入り、温水噴出等の操作が可能となるよ
うにし、人が座らないと操作しないようにしたものが知
られている。As shown in FIGS. 11 and 12, the conventional push button type switch is configured to open and close when the pressure receiving surface 100 is pressed, and the area of the pressure receiving surface 100 is relatively small. Such a push button type switch is attached to the toilet seat 102 of the toilet body 101 of the hot water flush toilet, and when a person sits, the switch is turned on by the load of the person, so that operations such as hot water ejection can be performed, and if a person does not sit. Known are those that are not operated.
温水洗浄便器の便座102に押しボタン型スイッチを取
付けた場合、便器の寸法バラつきが大きいために、押し
ボタン型スイッチの取付け精度も悪くなり、かつ使って
いるうちにガタが生じ便座102の位置がズレることもあ
った。そのために、押しボタン型スイッチの受圧面が便
器本体101からズレて正確に作動しないこともあった。When a push button switch is mounted on the toilet seat 102 of the hot water flush toilet, the dimensional variation of the toilet bowl is large, so the mounting accuracy of the push button switch is deteriorated, and backlash occurs during use, and the position of the toilet seat 102 becomes There was a gap. For this reason, the pressure receiving surface of the push button type switch may be displaced from the toilet body 101 and may not operate correctly.
そこで、この発明は、便座の位置ズレが生じたり寸法
にバラつきがあって取付け精度が悪い場合でも、人が座
ると人の荷重でスイッチが確実に入る温水洗浄便器の便
座における押しボタン型スイッチを提供することを目的
とする。Therefore, the present invention relates to a push button type switch in a toilet seat of a hot water flush toilet which, when a person sits down, the switch can be surely turned on by a person's load even when the position of the toilet seat is displaced or the dimensions are uneven and the mounting accuracy is poor. The purpose is to provide.
上述の目的を達成するため、この発明は、押しボタン
型スイッチ本体をベース板の略中央にその受圧面が突出
するように設け、押しボタン型スイッチ本体の受圧面上
方にその両端がベース板に接地し、かつこれら両端から
ベース板側へ反って立上り、頂面がベース板側へ反るよ
うに窪んで受圧面に当接する板バネを設け、板バネ上方
にこれを覆うに足る大きさを有しかつ硬質な押圧板を下
方に移動可能に取付け、押圧板の何れかの個所を押圧す
ることにより板バネを介して押しボタン型スイッチ本体
の受圧面を加圧するように構成し、板バネの窪んだ頂面
の輪郭部(上面折曲部)に接触するように設けた押圧板
を被覆すると共に少なくともベース板周面まで被覆する
可撓性並びに防水性を備えた弾性体を設けたものであ
る。In order to achieve the above object, the present invention provides a push button type switch main body having a pressure receiving surface protruding substantially in the center of a base plate, and both ends of the push button type switch main body are provided above the pressure receiving surface of the base plate. Provide a leaf spring that is grounded, rises from both ends toward the base plate side, and is depressed so that the top surface is warped toward the base plate side, and abuts against the pressure receiving surface. A rigid pressing plate is mounted movably downward, and by pressing any part of the pressing plate, a pressure receiving surface of the push button type switch main body is pressed via a leaf spring. An elastic body having flexibility and waterproofness that covers a pressing plate provided so as to be in contact with a contour portion (a bent portion on an upper surface) of a depressed top surface and covers at least a peripheral surface of a base plate. It is.
この発明のスイッチ装置を第10図に示すような便器の
便座に取付けた場合、便器本体や便座に寸法のバラつき
があったとしても、押圧板が受圧面よりも大きく、この
押圧板の何れの個所が押圧されさえすれば、板バネの介
在により受圧面が確実に押圧され、スイッチング動作が
正確に行われる。When the switch device of the present invention is mounted on the toilet seat of the toilet as shown in FIG. 10, even if the toilet body and the toilet seat vary in size, the pressing plate is larger than the pressure receiving surface. As long as the location is pressed, the pressure receiving surface is reliably pressed by the interposition of the leaf spring, and the switching operation is performed accurately.
以下に、この発明の好適な実施例を図面を参照にして
説明する。Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
第1図に示す第1実施例では、押しボタン型スイッチ
本体1をベース板2の略中央にその受圧面1Aが突出する
ように設け、押しボタン型スイッチ本体1の受圧面1A上
方にその両端がベース板2に接地するように板バネ3を
設けてある。この板バネ3は、両端からベース板2側へ
反って立上り、頂面がベース板2側へ反るように窪んで
受圧面1Aに当接している。また、板バネ3の窪んだ頂面
の輪郭部(上面折曲部)は押圧板5に接触している。こ
の板バネ3の上方にこれを覆うに足る大きさを有し、か
つ硬質な押圧板5を下方に移動可能に取付けてある。こ
の押圧板5は、可撓性並びに防水性を備えた弾性体6で
覆われている。この弾性体6は、押圧板5を被覆すると
共に少なくともベース板2の周面まで被覆するようにな
っている。この弾性体6で囲まれた空間内において押圧
板5は、下方に移動可能になっている。押圧板5は、そ
の外周縁の下方に伸びたフランジ部分がベース板2との
間に隙間を有して設けられ、この隙間分だけ下方に移動
可能になっている。この押圧板5の何れかの個所を押圧
すると、板バネ3に押圧力が作用し、板バネ3の窪んだ
頂面が押しボタン型スイッチ本体1の受圧面1Aを押圧す
るようになっている。この実施例の符号4はリード線を
示す。第2図は第1図II−II線断面図であり、板バネ3
の上面折曲部(頂面の輪郭部)により押圧板5が上方に
押し上げられ、板バネ3が下方に撓む余裕を有している
状態を示す。ベース板2は、ゴム材料の他適宜材料で形
成することができる。押圧板5は、プラスチック材料か
らなる硬質なものが好適である。ベース板2も可撓性並
びに防水性を備えたものであれば、全体が防水性を備え
たものとなり、浴室や給湯器等の水回り、屋外作業車両
等防水を必要とする個所のスイッチ装置として用いて好
適なものとなる。In the first embodiment shown in FIG. 1, a push button type switch main body 1 is provided substantially at the center of a base plate 2 so that a pressure receiving surface 1A thereof protrudes, and both ends thereof are located above a pressure receiving surface 1A of the push button type switch main body 1. Is provided with a leaf spring 3 so as to be grounded to the base plate 2. The leaf spring 3 rises from both ends toward the base plate 2 side, and is depressed so that the top surface warps toward the base plate 2 side, and is in contact with the pressure receiving surface 1A. Further, the contour (upper bent portion) of the concave top surface of the leaf spring 3 is in contact with the pressing plate 5. Above the leaf spring 3, a hard pressing plate 5 large enough to cover the leaf spring 3 is mounted so as to be movable downward. The pressing plate 5 is covered with an elastic body 6 having flexibility and waterproofness. The elastic body 6 covers the pressing plate 5 and at least the peripheral surface of the base plate 2. The pressing plate 5 is movable downward in the space surrounded by the elastic body 6. The pressing plate 5 has a flange portion extending below the outer peripheral edge of the pressing plate 5 with a gap between the pressing plate 5 and the base plate 2, and is movable downward by the gap. When any part of the pressing plate 5 is pressed, a pressing force acts on the leaf spring 3, and the concave top surface of the leaf spring 3 presses the pressure receiving surface 1 </ b> A of the push button switch body 1. . Reference numeral 4 in this embodiment indicates a lead wire. FIG. 2 is a sectional view taken along the line II-II of FIG.
5 shows a state in which the pressing plate 5 is pushed upward by the upper surface bent portion (contour portion of the top surface), and the leaf spring 3 has a margin to bend downward. The base plate 2 can be formed of an appropriate material other than the rubber material. The pressing plate 5 is preferably made of a hard material made of a plastic material. If the base plate 2 is also flexible and waterproof, the entire device will be waterproof, and will be used in places such as bathrooms and water heaters where water is required, outdoor work vehicles, and other places where waterproofing is required. It is suitable for use as
第3図に示す第2実施例では、板バネ3を平板なもの
に形成し、この平板な板バネ3をベース板2の端部に形
成された突起2A、2Aに載置し、板バネ3の上方にこれを
覆うに足る大きさを有し、複数の突条5A、5Aを備えた硬
質な押圧板5を下方に移動可能に取付けてある。弾性体
6は、押しボタン型スイッチ本体1の底面のみを残し全
体をすっぽり被覆するようにしてある。押しボタン型ス
イッチ本体1における符号1a、1bはそれぞれ電気接点を
示すものである。受圧面1Aと平板状の板バネ3との間に
は僅かな隙間を形成してある。この第2実施例において
も、押圧部材4の何れの個所を押圧しても、押圧板5の
突条5Aが板バネ3を押圧することとなり、板バネ3が押
圧されると板バネ3が押しボタン型スイッチ本体1の受
圧面1Aを押圧し、開閉動作を行わせる。In the second embodiment shown in FIG. 3, the leaf spring 3 is formed as a flat plate, and this flat leaf spring 3 is mounted on the projections 2A, 2A formed at the end of the base plate 2, and A rigid pressing plate 5 having a size large enough to cover it and having a plurality of ridges 5A, 5A is mounted above 3 so as to be movable downward. The elastic body 6 completely covers the entire surface except for the bottom surface of the push button type switch main body 1. Reference numerals 1a and 1b in the push button type switch main body 1 indicate electrical contacts, respectively. A slight gap is formed between the pressure receiving surface 1A and the flat leaf spring 3. Also in the second embodiment, no matter where the pressing member 4 is pressed, the ridge 5A of the pressing plate 5 presses the leaf spring 3, and the leaf spring 3 is pressed when the leaf spring 3 is pressed. The pressure receiving surface 1A of the push button type switch main body 1 is pressed to open and close.
第4図乃至第6図に示すものは、押しボタン型スイッ
チ本体1の構造の一例を示すものである。ここでは、加
圧導電型のスイッチを用いた。即ち、加圧導電ゴム8の
一面側に片面電極9を配し、他面側に補助電極10を配し
て両電極9、10により加圧導電ゴム8を挟んだ。加圧導
電ゴム8は、ニッケル粒子を厚み方向に配列したシリコ
ンゴム製の異方導電性性加圧導電ゴムを用いた。この加
圧導電ゴム8は、無加圧状態ではニッケル粒子間に所要
の距離を保持しているため、107Ω以上の電気絶縁性を
示すが、加圧によりその厚み方向において電気抵抗が10
1Ω以下の導体となる。片面電極9と加圧導電ゴム8と
の間にはスペーサ11を設けてある。4 to 6 show an example of the structure of the push button type switch main body 1. FIG. Here, a pressurized conductive switch was used. That is, the one-sided electrode 9 was disposed on one side of the pressurized conductive rubber 8, and the auxiliary electrode 10 was disposed on the other side, and the pressurized conductive rubber 8 was sandwiched between the two electrodes 9 and 10. As the pressurized conductive rubber 8, anisotropic conductive pressurized conductive rubber made of silicon rubber in which nickel particles are arranged in the thickness direction was used. The pressurized conductive rubber 8 has an electrical insulation of 10 7 Ω or more because a required distance is maintained between the nickel particles in a non-pressurized state.
It becomes a conductor of 1 Ω or less. A spacer 11 is provided between the single-sided electrode 9 and the pressurized conductive rubber 8.
ベース板2はゴム製のもののみならずプラスチック材
料や金属材料の何れの材料から形成しても良い。また、
押圧板5は樹脂又は金属で剛性の大きいものが好適であ
る。板バネ3としては、主に金属バネ材が使用に好適で
ある。また、押しボタン型スイッチ本体1は、1個所以
上の電気接点を有するもので受圧面を押圧することによ
って開閉動作を行うものであれば良く、図示する実施例
に限定されるものではない。The base plate 2 may be formed of any material such as a plastic material or a metal material, as well as a rubber material. Also,
The pressing plate 5 is preferably made of resin or metal and has high rigidity. As the leaf spring 3, a metal spring material is mainly suitable for use. Further, the push button type switch main body 1 has one or more electrical contacts and only needs to perform an opening / closing operation by pressing a pressure receiving surface, and is not limited to the illustrated embodiment.
第7図は、この発明のものと比較するための比較例を
示すものであり、押圧板5を用いないものを示した。こ
の比較例と第1実施例とを第8図に示すような実験方法
によりa乃至gの各個所で荷重をかけ、開閉動作をする
かどうか計測してみた。その結果は第9図に示すグラフ
の如く表れた。点線で示すグラフは第7図に示す比較例
であり、両端部では開閉動作が行われなかった。第9図
中実線で示すものはこの発明の第1実施例であり、どの
個所においても正確に開閉動作が行われた。FIG. 7 shows a comparative example for comparison with that of the present invention, in which the pressing plate 5 is not used. The comparative example and the first embodiment were subjected to a load at each of the points a to g by an experimental method as shown in FIG. 8 to measure whether or not the opening / closing operation was performed. The results appeared as shown in the graph of FIG. The graph shown by the dotted line is the comparative example shown in FIG. 7, and the opening and closing operation was not performed at both ends. The solid line in FIG. 9 shows the first embodiment of the present invention, and the opening / closing operation was performed accurately at any point.
以上説明したように、この発明によれば、押しボタン
型スイッチ本体をベース板の略中央にその受圧面が突出
するように設け、押しボタン型スイッチ本体の受圧面上
方にその両端がベース板に接地し、かつこれら両端から
ベース板側へ反って立上り、頂面がベース板側へ反るよ
うに窪んで受圧面に当接する板バネを設け、板バネ上方
にこれを覆うに足る大きさを有しかつ硬質な押圧板を下
方に移動可能に取付け、押圧板の何れかの個所を押圧す
ることにより板バネを介して押しボタン型スイッチ本体
の受圧面を加圧するように構成し、板バネの窪んだ頂面
の輪郭部に接触するように設けた押圧板を被覆すると共
に少なくともベース板周面まで被覆する可撓性並びに防
水性を備えた弾性体を設けたので、押圧板の何れの個所
を押圧しても押しボタン型スイッチ本体が確実に開閉動
作を行うことができる。また、弾性体を設けてあるの
で、水回りのスイッチ装置として使用するのに好適であ
る。また、押しボタン型スイッチ本体を端部が上方に立
上った突起を有するベース板の略中央にその受圧面が突
出するように設け、押しボタン型スイッチ本体の受圧面
上方にその両端がベース板の突起に接地するように平板
な板バネを設け、板バネ上方にこれを覆うに足る大きさ
を有しかつ硬質であって下方に突出する複数の突条を備
えた押圧板を下方に移動可能に取付け、押圧板の何れか
の個所を押圧することにより突条及び板バネを介して押
しボタン型スイッチ本体の受圧面を加圧するように構成
し、板バネのベース板の突起及び受圧面に接触しない部
分に突条が接触するように設けた押圧板を被覆すると共
に少なくともベース板周面まで被覆する可撓性並びに防
水性を備えた弾性体を設けたものでは、便座のように水
回り個所に使用するのに好適であり、ベース板の突起と
押圧板の突条とで平板な板バネを上下で挟んでいるた
め、押圧板のどの個所を押しても板バネが受圧面に作用
し、便器本体や便座に寸法のバラつきがあっても確実な
操作が可能となる。As described above, according to the present invention, the push button type switch main body is provided substantially at the center of the base plate so that the pressure receiving surface protrudes, and both ends of the push button type switch main body are above the pressure receiving surface of the base plate. Provide a leaf spring that is grounded, rises from both ends toward the base plate side, and is depressed so that the top surface is warped toward the base plate side, and abuts against the pressure receiving surface. A rigid pressing plate is mounted movably downward, and by pressing any part of the pressing plate, a pressure receiving surface of the push button type switch main body is pressed via a leaf spring. A flexible and waterproof elastic body that covers at least the peripheral surface of the base plate is provided so as to cover the pressing plate provided so as to contact the contour portion of the depressed top surface. Push button even when pressing Down switch body can be reliably opened and closed operation. In addition, since an elastic body is provided, it is suitable for use as a switch device around water. Further, the push-button switch body is provided so that its pressure-receiving surface protrudes substantially at the center of a base plate having a projection with an end rising upward, and both ends of the base are located above the pressure-receiving surface of the push-button switch body. A flat plate spring is provided so as to be in contact with the projection of the plate, and a pressing plate having a size large enough to cover the spring above the plate spring and having a plurality of rigid, downwardly projecting ridges is provided downward. The pressure receiving surface of the push button type switch body is configured to be movably mounted and to press any part of the pressing plate to press the pressure receiving surface of the push button type switch via the ridge and the plate spring. In the case of providing a flexible plate and an elastic body having waterproofness and covering at least up to the peripheral surface of the base plate at the same time as covering the pressing plate provided so that the ridge comes into contact with the portion not in contact with the surface, like a toilet seat I use it for water It is preferable that the flat plate spring is sandwiched between the projections of the base plate and the projections of the pressing plate at the top and bottom, so that pressing any part of the pressing plate causes the plate spring to act on the pressure receiving surface, and to the toilet body or the toilet seat. Reliable operation is possible even if the dimensions vary.
第1図はこの発明の好適な実施例を示す断面図、第2図
は第1図II−II線断面図、第3図は第2実施例を示す断
面図、第4図は押しボタン型スイッチ本体の一例を示す
断面図、第5図は第4図に示すスイッチの正面図、第6
図は第4図に示すスイッチの簡略断面図、第7図はこの
発明のスイッチ装置と比較するための比較例を示す断面
図、第8図は比較例とこの発明実施例とを比較するため
の実験手段の簡略説明図、第9図はこの発明実施例と比
較例との実験結果を示すグラフ、第10図は従来例を示す
断面図、第11図は第10図に用いられる押しボタン型スイ
ッチの正面図、第12図は第11図矢印方向から見た底面図
である。 1…押しボタン型スイッチ本体、1A…受圧面、2…ベー
ス板、3…板バネ、5…押圧板。1 is a sectional view showing a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, FIG. 3 is a sectional view showing the second embodiment, and FIG. FIG. 5 is a sectional view showing an example of the switch body, FIG. 5 is a front view of the switch shown in FIG. 4, and FIG.
FIG. 7 is a simplified sectional view of the switch shown in FIG. 4, FIG. 7 is a sectional view showing a comparative example for comparison with the switch device of the present invention, and FIG. 8 is a diagram for comparing the comparative example with the embodiment of the present invention. FIG. 9 is a graph showing the experimental results of the embodiment of the present invention and a comparative example, FIG. 10 is a sectional view showing a conventional example, and FIG. 11 is a push button used in FIG. FIG. 12 is a front view of the mold switch, and FIG. 12 is a bottom view seen from the direction of the arrow in FIG. DESCRIPTION OF SYMBOLS 1 ... Push button type switch body, 1A ... Pressure receiving surface, 2 ... Base plate, 3 ... Leaf spring, 5 ... Press plate.
Claims (2)
中央にその受圧面が突出するように設け、 押しボタン型スイッチ本体の受圧面上方にその両端がベ
ース板に接地し、かつこれら両端からベース板側へ反っ
て立上り、頂面がベース板側へ反るように窪んで受圧面
に当接する板バネを設け、 板バネ上方にこれを覆うに足る大きさを有しかつ硬質な
押圧板を下方に移動可能に取付け、 押圧板の何れかの個所を押圧することにより板バネを介
して押しボタン型スイッチ本体の受圧面を加圧するよう
に構成し、 板バネの窪んだ頂面の輪郭部に接触するように設けた押
圧板を被覆すると共に少なくともベース板周面まで被覆
する可撓性並びに防水性を備えた弾性体を設けたことを
特徴とする温水洗浄便器の便座における押しボタン型ス
イッチ。1. A push-button switch body is provided substantially at the center of a base plate so that a pressure-receiving surface thereof protrudes. Above the pressure-receiving surface of the push-button switch body, both ends thereof are grounded to the base plate. A plate spring is provided that rises up to the base plate side, is recessed so that the top surface warps toward the base plate side, and comes into contact with the pressure receiving surface, and has a size large enough to cover it above the plate spring and is a hard pressing plate. The pressure receiving surface of the push-button switch body is configured to be pressurized through a leaf spring by pressing any part of the pressing plate, and the contour of the concave top surface of the leaf spring is A push button type in a toilet seat of a hot water flush toilet, wherein an elastic body having flexibility and waterproofness covering at least the peripheral surface of the base plate is provided while covering a pressing plate provided so as to contact the portion. switch.
立上った突起を有するベース板の略中央にその受圧面が
突出するように設け、 押しボタン型スイッチ本体の受圧面上方にその両端がベ
ース板の突起に接地するように平板な板バネを設け、 板バネ上方にこれを覆うに足る大きさを有しかつ硬質で
あって下方に突出する複数の突条を備えた押圧板を下方
に移動可能に取付け、 押圧板の何れかの個所を押圧することにより突条及び板
バネを介して押しボタン型スイッチ本体の受圧面を加圧
するように構成し、 板バネのベース板の突起及び受圧面に接触しない部分に
突条が接触するように設けた押圧板を被覆すると共に少
なくともベース板周面まで被覆する可撓性並びに防水性
を備えた弾性体を設けたことを特徴とする温水洗浄便器
の便座における押しボタン型スイッチ。2. A push button type switch main body is provided at a substantially center of a base plate having a projection with an end rising upward so that a pressure receiving surface thereof protrudes, and is provided above a pressure receiving surface of the push button type switch main body. A pressing plate provided with a flat plate spring such that both ends thereof are in contact with the projections of the base plate, and having a plurality of ridges which are large enough to cover the plate spring and are hard and project downward. The pressure receiving surface of the push button switch body is configured to be pressed downward through a ridge and a leaf spring by pressing any part of the pressing plate. An elastic body having flexibility and waterproofness that covers the pressing plate provided so that the protrusions come into contact with the protrusion and the portion that does not contact the pressure receiving surface and that covers at least the peripheral surface of the base plate is provided. Toilet seat of hot water flush toilet Push button type switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63135094A JP2842554B2 (en) | 1988-06-01 | 1988-06-01 | Switch device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63135094A JP2842554B2 (en) | 1988-06-01 | 1988-06-01 | Switch device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01304624A JPH01304624A (en) | 1989-12-08 |
JP2842554B2 true JP2842554B2 (en) | 1999-01-06 |
Family
ID=15143694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63135094A Expired - Lifetime JP2842554B2 (en) | 1988-06-01 | 1988-06-01 | Switch device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2842554B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005007887B3 (en) * | 2005-02-21 | 2006-02-23 | Hansa Metallwerke Ag | Operating device for sanitary fitting has coupling devices extending perpendicular to operating direction of sensor, over its sensitive region |
CN112350433A (en) * | 2020-09-08 | 2021-02-09 | 国网浙江武义县供电有限公司 | Intelligent hard pressing plate remote operating system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS526857Y2 (en) * | 1971-12-14 | 1977-02-14 |
-
1988
- 1988-06-01 JP JP63135094A patent/JP2842554B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH01304624A (en) | 1989-12-08 |
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