JPH0452522A - Quake-sensitive device - Google Patents
Quake-sensitive deviceInfo
- Publication number
- JPH0452522A JPH0452522A JP2163289A JP16328990A JPH0452522A JP H0452522 A JPH0452522 A JP H0452522A JP 2163289 A JP2163289 A JP 2163289A JP 16328990 A JP16328990 A JP 16328990A JP H0452522 A JPH0452522 A JP H0452522A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- seismic
- casing
- electrode piece
- piece
- 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
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910017532 Cu-Be Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は地震動を検出して各種災害を未然に防止する
目的で、例えばガスメータ、石油ストーブ、エレベータ
、化学プラント、鉄道等の各種機器、装置等に取付けら
れる感震装置に関する。[Detailed Description of the Invention] Industrial Field of Application This invention is applied to various equipment and devices such as gas meters, kerosene stoves, elevators, chemical plants, railways, etc. for the purpose of detecting seismic motion and preventing various disasters. Regarding the attached seismic device.
従来の技術
従来、この種の感震装置として、例えば実開昭６１−４
８３２５号公報等に示されるように、感震機構部に感震
球を使用したものが既知である。2. Description of the Related Art Conventionally, as this type of seismic sensing device, for example,
As shown in Japanese Patent No. 8325, etc., there is a known device that uses a vibration-sensing ball in the vibration-sensing mechanism.
かかる従来の感震機構部は、内底面が緩やかな逆円錐状
に形成されたケーシング内に感震球が収納され、かつそ
の上部に、下面側か感震球より曲率半径の大なる凹球面
に形成された円盤状部を有するプランジャーが、上記凹
球面を感痕球上に接触せしめた状態で上下移動自在に配
設され、かつ該プランジャーの上端中央部に突設された
軸部に、一端部が枢着された押圧板の他端先端部が当接
されると共に、該押圧板の中間部上面に開閉スイッチの
作動レバーの先端部が下方付勢状態に弾接されている。In such a conventional vibration-sensing mechanism, a vibration-sensing ball is housed in a casing with an inverted conical shape with a gentle inner bottom surface, and a concave spherical surface with a larger radius of curvature than that of the vibration-sensing ball is placed on the upper side of the casing on the lower surface side. A plunger having a disc-shaped portion formed in the shape of a disk is disposed so as to be movable up and down with the concave spherical surface in contact with the impression sphere, and a shaft portion protruding from the center of the upper end of the plunger. The tip of the other end of the pressing plate, one end of which is pivotally connected, is brought into contact with the pressing plate, and the tip of the operating lever of the opening/closing switch is elastically contacted with the upper surface of the intermediate portion of the pressing plate in a downwardly biased state. .
而して、震動に伴って感震球が上記ケーシング内を転動
することによって、核球がプランジャーの凹球面を上方
に押し上げ、これによりプランジャーの上端軸部が押圧
板を押し上げ、それに伴い作動レバーが押し上げられて
開閉スイッチの接点が閉じるように作動するものである
。As the seismic ball rolls in the casing due to the vibration, the core ball pushes up the concave spherical surface of the plunger, causing the upper end shaft of the plunger to push up the pressing plate, and Accordingly, the actuating lever is pushed up and the contacts of the open/close switch are closed.
発明が解決しようとする課題
しかしながら、この種の従来の感震装置は、上述のとお
り、プランジャーが感震球上に常時接触状態に配設され
ると共に、プランジャーの上端軸部がケーシング上部に
被蓋された蓋体の軸孔に嵌入され、かつプランジャーが
押圧板により押圧された構造であるため、震動時に開閉
スイッチを確実に作動させるためには、プランジャーと
感震球との摩擦力、プランジャーの軸部とこれが嵌入さ
れた前記軸孔との摩擦力、プランジャーの重力、押圧板
の付勢力等に打ち勝ってプランジャーを上下移動させな
ければならない。従って、感震球として必然的に大型の
ものを採用しなければならず、そのために感震装置自体
が大型になってしまうという難があった。Problems to be Solved by the Invention However, as described above, in this type of conventional vibration sensing device, the plunger is disposed in constant contact with the vibration sensing bulb, and the upper end shaft of the plunger is in contact with the upper part of the casing. The structure is such that the plunger is inserted into the shaft hole of the lid covered by the lid, and the plunger is pressed by a pressure plate. Therefore, in order to reliably operate the open/close switch in the event of vibration, the plunger and the seismic ball must be connected. The plunger must be moved up and down by overcoming the frictional force, the frictional force between the shaft of the plunger and the shaft hole into which it is inserted, the gravity of the plunger, the biasing force of the pressing plate, etc. Therefore, it is necessary to use a large-sized earthquake-sensing ball, which poses a problem in that the earthquake-sensing device itself becomes large.
また、感震球がケーシング内で正確に直線往復運動をし
た場合には、必要なパルス信号が発生されて地震を検出
することが可能であるが、円運動等した場合にはその間
開閉スィッチが閉状態を維持してしまうので、必要なパ
ルス信号を得ることができず、地震を正確に判定するこ
とができないという難があった。In addition, when the seismic ball makes accurate linear reciprocating motion within the casing, the necessary pulse signal is generated and it is possible to detect an earthquake, but when it makes circular motion etc., the on/off switch is closed during that time. Since the closed state is maintained, it is difficult to obtain the necessary pulse signals and it is difficult to accurately determine an earthquake.
この発明は、上述の問題点を解決すべくなされたもので
あり、小型化を図ることができ、それでいて高性能、高
信頼性に優れた感震装置を提供することを目的とするも
のである。This invention was made in order to solve the above-mentioned problems, and aims to provide a seismic sensing device that can be miniaturized and yet has excellent high performance and high reliability. .
課題を解決するための手段
而して、発明者等は鋭意研究と実験を重ねた結果、従来
のスイッチ機構を採用した型式のものにあっては、より
一層の小型化および信頼性の向上を図ることは困難であ
ると認識するに至り、更に研究と実験を繰り返すことに
より、この発明を完成し得たものである。As a means to solve the problem, the inventors have conducted extensive research and experimentation, and as a result, they have developed a method that uses a conventional switch mechanism to achieve further miniaturization and improved reliability. They came to realize that it was difficult to achieve this goal, and through repeated research and experiments, they were able to complete this invention.
即ち、−この発明にかかる感震装置は、ケーシング内に
感震球が転動自在に収納されると共に、該感震球の上部
にその転動に伴って開閉作動されるスイッチ部が設けら
れてなる感震装置において、
上記スイッチ部が、互いに等角度をなすように放射状に
延びた偶数本の可動接片を有する下側電極片とその上部
に近接離間状態に配置された上側電極片とよりなる開閉
スイッチと、上記各可動接片と前記感震球との間にそれ
ぞれ上下移動自在に配設され、感震球の転動時に核球に
接触されて前記可動接片を上側電極片に接触させるよう
に押上作動せしめる接片作動用小球とで構成されてなる
ものであることを特徴とするものである。That is, - in the seismic device according to the present invention, a seismic ball is housed in a casing so as to be freely rollable, and a switch section is provided above the seismic ball to open and close as the ball rolls. In the seismic sensing device, the switch section includes a lower electrode piece having an even number of movable contact pieces extending radially at equal angles to each other, and an upper electrode piece arranged close to and spaced above the lower electrode piece. an open/close switch consisting of an open/close switch, which is disposed so as to be movable up and down between each of the movable contact pieces and the seismic bulb, and which is brought into contact with the nuclear bulb when the seismic bulb rolls, causing the movable contact piece to connect to the upper electrode piece. A small ball for actuating the contact piece is operated to push up the contact piece so as to bring it into contact with the contact piece.
感震装置を直接プリント基板に取り付けることができる
ようにする目的で、外側ケーシングの下端に脚部を下方
突出状に設けても良い。また、開閉スイッチとプリント
基板の回路とを接続するリード線を省略するために、外
側ケーシングの下端に、開閉スイッチに電気的に接続さ
れた接続端子を下方突出状に設けても良い。In order to enable the vibration sensing device to be directly attached to the printed circuit board, legs may be provided at the lower end of the outer casing to project downward. Further, in order to omit a lead wire connecting the open/close switch and the circuit of the printed circuit board, a connecting terminal electrically connected to the open/close switch may be provided at the lower end of the outer casing in a downwardly protruding manner.
作用
ケーシング内に収納された感震球は、常時は該ケーシン
グの内底面中央部に位置すると共に、各接片作動用小球
に近接離間状態となされている。そして、この状態にお
いて地震等によりケーシングが震動すると、感震球がケ
ーシング内で転動され、その転動に伴って感震球が対応
位置の接片作動用小球に接触され、これを押し上げる。The seismic ball housed in the working casing is normally located at the center of the inner bottom surface of the casing, and is placed in close proximity to and separated from each of the small balls for actuating the contact piece. In this state, when the casing vibrates due to an earthquake, etc., the seismic ball rolls within the casing, and as it rolls, the seismic ball contacts the contact piece operating small ball at the corresponding position and pushes it up. .
この小球の上昇作動によって下側電極片の可動接片が押
し上げられ、該接片が上側電極片に接触されることによ
り開閉スイッチが閉の状態となって震動が検出される。This upward movement of the small ball pushes up the movable contact piece of the lower electrode piece, and when the movable contact piece comes into contact with the upper electrode piece, the open/close switch is closed, and vibrations are detected.
外側ケーシングの下端に下方突出状に設けられた脚部を
プリント基板の対応孔部に差し込むことにより該基板に
容易かつ確実に取付けられると共に、同下端に設けられ
た接続端子によりリード線なしに開閉スイッチをプリン
ト基板の回路に接続することができる。By inserting the downwardly projecting legs at the lower end of the outer casing into the corresponding holes on the printed circuit board, it can be easily and securely attached to the printed circuit board, and can be opened and closed without lead wires using the connection terminals provided at the lower end of the outer casing. The switch can be connected to a printed circuit board circuit.
実施例
以下、この発明にかかる感震装置を図示実施例に基づい
て説明する。Embodiments Hereinafter, a seismic sensing device according to the present invention will be explained based on illustrated embodiments.
第１図および第２図に示す実施例の感震装置は、内部に
感震球（１）が収納されると共に、上部にスイッチ部（
２）が設けられた内側ケーシング（３）が、外側ケーシ
ング（４）内に常時水平に維持され、かつ揺動が制限さ
れた状態で吊持されたものである。The vibration sensing device of the embodiment shown in FIGS. 1 and 2 has a vibration sensing bulb (1) housed inside and a switch section (
The inner casing (3) provided with the inner casing (3) is always maintained horizontally within the outer casing (4) and suspended with limited swinging.
前記内側ケーシング（３）は、内底面中央部に凹陥部（
５）が形成されたもので、直径約１１．１１＃Ｉｌｌ＋
の鋼製等の感震球（１）が常時は上記凹陥部（５）上に
保持された状態で収納されている。この内側ケーシング
（３）の内側上部には、下面側が感震球（１）に対応す
る凹球面に形成された接片作動用小球受蓋（６）が、感
震球（１）から近接離間状態となる位置に係止された状
態で嵌め込まれている。該受蓋（６）は、特に第３図お
よび第４図に示すように、その中心から等距離の位置に
円周方向に沿って等間隔毎に合計６個の直径約２．６ｍ
ｒｔｒの孔部（６ａ）が上下貫通状態に穿設されており
、第１図に示すように、これら各孔部（６ａ）にそれぞ
れ直径約２．５ｍの鋼製等の接片作動用小球（７）が嵌
め込まれている。この嵌め込み状態において各小球（７
）は各孔部（６ａ）の下端開口部より下方に若干突出さ
れた状態で下端縮径部（６ｂ）に係止保持され、かつ上
下移動自在となされている。該小球受蓋（６）の上面中
央部には開閉スイッチ取付用突起（６Ｃ）が突設されて
おり、該突起（６ｃ）に上下一対の電極片（８）（９）
からなる開閉スイッチ（１０）が固着されている。The inner casing (3) has a concave portion (
5) is formed and has a diameter of approximately 11.11#Ill+
A seismic ball (1) made of steel or the like is normally housed in a state where it is held on the recess (5). At the inner upper part of the inner casing (3), there is a contact piece actuating small ball receiver (6) whose lower surface side is formed into a concave spherical surface corresponding to the seismic bulb (1), and which is close to the seismic bulb (1). It is fitted in a locked state in a position where it becomes a separated state. As particularly shown in FIGS. 3 and 4, the receiver cover (6) has a total of 6 pieces with a diameter of about 2.6 m arranged at equal intervals along the circumference at positions equidistant from the center of the cover (6).
Holes (6a) of the RTR are drilled through the top and bottom, and as shown in Fig. 1, each of these holes (6a) has a small contact piece actuator made of steel or the like with a diameter of about 2.5 m. A ball (7) is fitted. In this fitted state, each small ball (7
) is held in place by the lower end reduced diameter portion (6b) in a state that projects slightly downward from the lower end opening of each hole (6a), and is movable up and down. A protrusion (6C) for attaching an open/close switch is protruded from the center of the upper surface of the small ball receiving cover (6), and a pair of upper and lower electrode pieces (8) (9) are attached to the protrusion (6c).
An open/close switch (10) consisting of is fixed.
この開閉スイッチ（１０）は、第５図（イ）（ロ）に示
すように、隣接するものどおしが互いに略６０度の角度
をなすように中央部（８ａ）から放射状に６本の可動接
片（８ｂ）が延設されると共に、それらの間から１本の
細幅状引出片（８ｃ）が延設された下側電極（８）と、
これに略対応する形状の接片（９ｂ）および引出片（９
Ｃ）を有する上側電極（９）とで構成されている。As shown in FIGS. 5(a) and 5(b), this open/close switch (10) has six radially extending from the center part (8a) such that adjacent ones make an angle of approximately 60 degrees to each other. a lower electrode (8) having a movable contact piece (8b) extending therebetween and a narrow pull-out piece (8c) extending therebetween;
A contact piece (9b) and a pull-out piece (9
C) with an upper electrode (9).
上記可動接片（８ｂ）は、前記小球受蓋（６）の対応孔
部（８ａ）の上部を覆いうる長さを有し、かつ互いに隣
接するものどおしが孔部（６ａ）と同位相となるもので
あることが必要である。上記画電極（８）（９）として
は、電気的特性（低接触抵抗）、強度（耐久性）、柔軟
性（撓曲性ないしは感度）等の観点より、厚さ０．０３
ｍ程度のＣｕ−Ｂｅ合金製超薄板材を上記形状に打ち抜
いて金メツキ処理を施した後、熱処理を施したものが好
適に用いられる。而して、第１図に示すように、上記小
球受蓋（６）の各孔部（６ａ）上に各可動接片（８ｂ）
が位置するように下側電極片（８）がその中央部（８ａ
）を小球受蓋（６）のスイッチ取付用突起（６Ｃ）に嵌
合固定されると共に、その上部に絶縁座金（１１）を介
して近接離間状態となるように上側電極片（９）が、各
接片（９ｂ）を下側電極片（８）の可動接片（８ｂ）と
同位相にし、かつ引出片（８ｃ）（９ｃ）を互いに反対
方向に引出した状態で嵌合固定されている。図中、（９
ｄ）は可動接片（９ｂ）に形成された接点である。The movable contact piece (8b) has a length that can cover the upper part of the corresponding hole (8a) of the small ball receiving cover (6), and the movable contact piece (8b) has a length that can cover the upper part of the corresponding hole (8a) of the small ball receiving cover (6), and both of the adjacent pieces It is necessary that they be in the same phase. The picture electrodes (8) and (9) should have a thickness of 0.03 mm from the viewpoint of electrical properties (low contact resistance), strength (durability), flexibility (flexibility or sensitivity), etc.
An ultra-thin plate material made of a Cu-Be alloy with a thickness of about 1.5 m is preferably punched out into the above shape, gold-plated, and then heat-treated. As shown in FIG. 1, each movable contact piece (8b) is placed on each hole (6a) of the small ball receiving cover (6).
The lower electrode piece (8) is positioned at its center (8a
) is fitted and fixed to the switch mounting protrusion (6C) of the small bulb receiving cover (6), and the upper electrode piece (9) is placed on top of the protrusion (6C) through an insulating washer (11) so as to be close to each other. , each contact piece (9b) is in the same phase as the movable contact piece (8b) of the lower electrode piece (8), and the pull-out pieces (8c) (9c) are fitted and fixed in a state where they are pulled out in opposite directions. There is. In the figure, (9
d) is a contact formed on the movable contact piece (9b).
ここに感震球（１）と各接片作動用小球（７）とは間隔
が０．２ｍ程度の極めて近接した離間状態となされてお
り、感震球（１）がケーシング（３）内を転動した際に
該感震球（１）が対応位置の小球（７）に接触され、該
小球（７）が押し上げられる。そしてこの押し上げられ
た小球（７）は、下側電極片（８）の対応する可動接片
（８ｂ）を押し上げ、゛該接片（８ｂ）が上側電極片（
９）の対応する接片（９ｂ）に接触される。震動がなく
なり感震球（１）の転動が終了されると、感震球（１）
、小球（７）および可動接片（８ｂ）はそれぞれ元の位
置に復帰し、次の震動の検出に備えるものとなる。なお
、正確に震動を検出するには、感震球（１）がケーシン
グ（３）内で震動に対応して確実に、しかも直線往復動
をすることが望ましい。而して、かかる確実かつ正確な
直線運動をさせるために、この実施例では、ケーシング
（３）の内底面に特種形状の凹陥部（５）を形成してい
る。即ち、第６図および第７図に示すように、中央部に
凹部（５ａ）が形成されると共に、該凹部（５ａ）から
隣接するものどおしが約３０度の角度をなすように頂角
が約１４０度に設定された断面三角形の凸条（５ｂ）が
合計１２本放射状に形成されている。上記凹部（５ａ）
は検知すべき震動に応じてその直径を適宜設定すれば良
く、例えば１６５ｇａ ｌの震動を検知するためには直
径を１゜８７胴程度に設定すれば良い。また各凸条（５
ｂ）はそれぞれ外側に向かって３〜４度程度以下の緩や
かな上り傾斜状に設定されている。このような放射状の
凸条（５ｂ）を形成することにより、感震球（１）が該
凸条（５ｂ）に沿って正確に往復作動されることとなり
、より一層正確な震動検出が可能となる。また各凸条（
５ｂ）が断面三角形に形成されていることより、感震球
（１）が各凸条（５ｂ）に対して点接触状態となされる
。Here, the seismic ball (1) and the small balls for actuating each contact piece (7) are spaced very close to each other with a distance of about 0.2 m, and the seismic ball (1) is inside the casing (3). When rolling, the earthquake-sensitive ball (1) comes into contact with the small ball (7) at the corresponding position, and the small ball (7) is pushed up. This pushed-up small ball (7) pushes up the corresponding movable contact piece (8b) of the lower electrode piece (8), so that the contact piece (8b) moves to the upper electrode piece (8).
9) is contacted with the corresponding contact piece (9b). When the vibration stops and the seismic ball (1) finishes rolling, the seismic ball (1)
, the small ball (7) and the movable contact piece (8b) each return to their original positions to prepare for the detection of the next vibration. In order to accurately detect vibrations, it is desirable that the seismic ball (1) reliably move back and forth in a straight line in response to the vibrations within the casing (3). In order to achieve such reliable and accurate linear movement, in this embodiment, a specially shaped recess (5) is formed on the inner bottom surface of the casing (3). That is, as shown in FIGS. 6 and 7, a recess (5a) is formed in the center, and the tops of the recess (5a) form an angle of about 30 degrees between adjacent recesses (5a). A total of 12 protrusions (5b) each having a triangular cross-section with an angle of about 140 degrees are formed radially. The above recess (5a)
The diameter may be set appropriately depending on the vibration to be detected; for example, in order to detect a vibration of 165 gal, the diameter may be set to about 1°87 mm. In addition, each ridge (5
b) are each set to have a gentle upward slope of about 3 to 4 degrees or less toward the outside. By forming such radial protrusions (5b), the seismic ball (1) can be reciprocated accurately along the protrusions (5b), making it possible to detect vibrations even more accurately. Become. Also, each ridge (
5b) is formed to have a triangular cross section, the seismic ball (1) is brought into point contact with each of the protrusions (5b).
従って、感震球（１）として従来品よりも小さいものを
採用することが可能である。Therefore, it is possible to use a smaller seismic ball (1) than conventional products.
上記内側ケーシング（４）の上端開口部には蓋体（１２
）が嵌合固定されている。この蓋体（１２）の上面中央
部には上端が半球状に形成された吊下用軸部材（１３）
が上方突出状に固植されており、その上端半球状部（１
３ａ ）が内側ケーシング吊持用の帯板材（１４）の中
央部に穿設された孔部（１４ａ）の周縁に係止され、内
側ケーシング（３）が帯板材（１４）に対して揺動自在
となされている。上記帯板材（１４）に代えて円盤状そ
の他適宜形状の吊持部材を用いても良い。The upper end opening of the inner casing (4) has a lid (12
) are fitted and fixed. At the center of the upper surface of this lid body (12) is a hanging shaft member (13) whose upper end is formed into a hemispherical shape.
is firmly planted in an upwardly protruding manner, and its upper hemispherical part (1
3a) is locked to the periphery of a hole (14a) drilled in the center of the strip material (14) for suspending the inner casing, and the inner casing (3) swings relative to the strip material (14). It is done freely. In place of the above-mentioned strip material (14), a suspension member having a disc shape or other appropriate shape may be used.
一方、外側ケーシング（４）は、第１図および第２図に
示すように、内部に上記内側ケーシング（３）を揺動自
在に収納しつる大きさに形成されたもので、その上端開
口部が蓋体（１５）により閉塞されている。上記ケーシ
ング（４）の上端内側縁部には段部（４ａ）が形成され
ており、該段部（４ａ）に内側ケーシング（３）を吊持
する前記帯板材（１４）の両端部が係止されることによ
り、内側ケーシング（３）が外側ケーシング（４）の傾
斜設定時においても常時水平状態を維持しつつ揺動自在
な態様で吊持されるようになされている。この吊持状態
において外側ケーシング（４）の震動を内側ケーシング
（３）に伝達させると共に、内側ケーシング（３）が慣
性力により揺動することを防止する目的で外側ケーシン
グ（４）の凹球状底部と内側ケーシング（３）底部との
間に若干量の高粘度流体（１６）が充填されている。こ
の高粘度流体（１６）としては、内側ケーシング（３）
を常時水平保持に保持しうろこと、震動を効率良く伝達
しうること、長期間に亘って性能が劣化しないこと、油
洩出の虞がないこと等の諸条件を満たすことが必要であ
り、例えば粘度が１万（ｃ Ｐ）程度のシリコン・オイ
ル（信越化学工業株式会社、商品名ｒＫ Ｆ −９６Ｈ
Ｊ等）か好適に用いられる。なお、上記高粘度流体（１
６）に代えて、あるいはそれと共に上記帯板材（１４）
と蓋体（１２）との間に円錐バネ等の調心作用を阻害し
ない揺動規制部材を介在配置させるようにしても良い。On the other hand, as shown in FIGS. 1 and 2, the outer casing (4) is formed into a size that allows the inner casing (3) to swing freely, and has an opening at its upper end. is closed by a lid (15). A step (4a) is formed on the inner edge of the upper end of the casing (4), and both ends of the strip material (14) that suspends the inner casing (3) are engaged with the step (4a). By being stopped, the inner casing (3) is suspended in a swingable manner while always maintaining a horizontal state even when the outer casing (4) is set to be tilted. In this suspended state, the concave spherical bottom of the outer casing (4) is designed to transmit vibrations of the outer casing (4) to the inner casing (3) and to prevent the inner casing (3) from swinging due to inertial force. A small amount of high viscosity fluid (16) is filled between the inner casing (3) and the bottom of the inner casing (3). As this high viscosity fluid (16), the inner casing (3)
It is necessary to meet various conditions such as keeping the scales horizontal at all times, being able to efficiently transmit vibrations, ensuring that performance does not deteriorate over a long period of time, and that there is no risk of oil leakage. For example, silicone oil with a viscosity of about 10,000 (cP) (Shin-Etsu Chemical Co., Ltd., trade name rK F-96H)
J, etc.) are preferably used. In addition, the above-mentioned high viscosity fluid (1
In place of or in addition to 6), the above strip material (14)
A swing regulating member such as a conical spring that does not inhibit the alignment action may be interposed between the cover body (12) and the cover body (12).
また外側ケーシング（４）には、その外周面の４箇所に
９０度の位相差をもって、軸線方向に沿う膨隆部（４ｂ
）か一体的に設けられている。In addition, the outer casing (4) has bulges (4b
) or are provided integrally.
対向する一対の膨隆部（４ｂ） （４ｂ）の各下端部
には、取付側のプリント基板（Ｐ）に対する差し込み固
定用脚部（４ｃ）が一体的に延設されている。他の一対
の膨隆部（４ｂ） （４ｂ）には、それぞれ導電性の
端子棒（１７） （１７）が埋設状態に圧入嵌合され
、この各端子棒（１７） （１７）の上端に内側ケー
シング（３）より引出された開閉スイッチ（１０）の引
出片（８ｃ） （９ｃ）がそれぞれリベット止めによ
り接続され、かつ下端に逆り字状の端子板（１８）
（１８）が下方突出状に固着されることにより、取付側
のプリント基板（Ｐ）にリード線なしに直接取り付１す
可能となされている。これにより、従来品のようなリー
ド線を接合させるためのハンダ付は作業を省略し得、も
って製造コストの低減および電気抵抗の低減を図ること
ができるものである。Legs (4c) for inserting and fixing to the printed circuit board (P) on the mounting side are integrally extended at the lower ends of the pair of opposing bulges (4b) (4b). Conductive terminal bars (17) (17) are press-fitted into the other pair of bulges (4b) (4b), respectively, in a buried state, and the upper ends of the terminal bars (17) (17) are inserted inside. The pull-out pieces (8c) (9c) of the open/close switch (10) pulled out from the casing (3) are connected by rivets, and there is an inverted-shaped terminal plate (18) at the lower end.
(18) is fixed in a downwardly protruding manner, so that it can be directly attached to the mounting side printed circuit board (P) without a lead wire. As a result, the soldering work for joining lead wires, which is required in conventional products, can be omitted, thereby reducing manufacturing costs and electrical resistance.
なお、上記実施例では下側電極片として放射状に延びた
６片の可動接片を有するものを用い、かつこれに対応す
る６片の接片を有する上側電極片を用いたものを示した
が、この発明はこれに限定されるものではなく、下側電
極片としてそれ以上の可動接片を有するものを用いても
良いし、また上側電極片として放射状接片を有しない例
えば円盤状のもの等を用いることも許容するものである
。要するに、ケーシング内に感震球が転動自在に収納さ
れると共に、該感震球の上部に、互いに等角度をなすよ
うに放射状に延びた偶数本の可動接片を有する下側電極
片とその上部に近接離間状態に配置された上側電極片と
よりなる開閉スイッチが配設され、かつ上記各可動接片
と前記感震球との間に、感震球の転動時に核球に接触さ
れて押し上げられることにより前記可動接片を上側電極
片に接触させるように押上作動せしめる接片可動用小球
が上下移動自在に配設されてなるものであれば、他の任
意の設計的変更をも許容するものである。Note that in the above embodiment, a lower electrode piece having six movable contact pieces extending radially is used, and an upper electrode piece having six corresponding contact pieces is used. However, the present invention is not limited to this, and a lower electrode piece having more movable contact pieces may be used, and an upper electrode piece that does not have a radial contact piece, for example, a disc-shaped one, may be used. It is also permissible to use the following. In short, a seismic ball is housed in a casing so as to be able to roll freely, and a lower electrode piece having an even number of movable contact pieces extending radially at equal angles to each other is attached to the upper part of the seismic ball. An opening/closing switch consisting of upper electrode pieces arranged close to and apart from each other is disposed on the top thereof, and is provided between each of the movable contact pieces and the seismic ball to come into contact with the core ball when the seismic ball rolls. Any other design change as long as the small ball for movable contact piece is arranged to be movable up and down and is pushed up to bring the movable contact piece into contact with the upper electrode piece. It also allows for
発明の効果
この発明にかかる感震装置は、上述のとおり、各可動接
片と前記感震球との間に、感震球の転動時に核球に接触
されて押し上げられることにより前記可動接片を上側電
極片に接触せしめる接片可動用小球が上下移動自在に配
設されてなるものであるから、震動時において感震球と
接片可動用小球とは摩擦抵抗の非常に小さい点接触状態
となされる。しかも感震球の震動を可動接片に伝達する
部材として小球が用いられると共に、これにより作動さ
れる開閉スイッチとして放射状に延びた可動接片を有す
る電極片が用いられている。従って、感震球のわずかな
震動をも正確に検出することができ、感震球として従来
品よりはるかに小さいものを採用することができ、ひい
ては感震装置全体の小形化を図ることができる。Effects of the Invention As described above, in the seismic device according to the present invention, the movable contact piece is formed between each movable contact piece and the seismic ball by being brought into contact with and pushed up by the core ball when the seismic ball rolls. Since the small ball for moving the contact piece, which brings the piece into contact with the upper electrode piece, is arranged to be able to move up and down, the frictional resistance between the vibration sensing ball and the small ball for moving the contact piece is extremely low during vibrations. Point contact is made. Moreover, a small ball is used as a member for transmitting the vibration of the seismic ball to a movable contact piece, and an electrode piece having a radially extending movable contact piece is used as an open/close switch operated by the small ball. Therefore, it is possible to accurately detect even the slightest vibration of the seismic bulb, and it is possible to use a much smaller seismic bulb than conventional products, which in turn makes it possible to downsize the entire seismic device. .
また、感震球の上部に、互いに等角度をなすように放射
状に延びた偶数本の可動接片を有する下側電極片とその
上部に近接離間状態に配置された上側電極片とよりなる
開閉スイッチが配設され、かつ上記各可動接片と前記感
震球との間に接片作動用小球が上下移動自在に配設され
てなるものであるから、感震球がケーシング内でいずれ
の方向に往復作動しても震動を正確に検知しうるのはも
とより、震動に伴って感震球がケーシング内で円運動を
するようなことがあっても、地震判定に必要なパルス信
号を確実に得ることができる。従って、地震判定を誤る
ような不都合を回避し得、より一層信頼性に優れたもの
とし得る。In addition, the opening/closing device is composed of a lower electrode piece having an even number of movable contact pieces extending radially at equal angles to each other on the upper part of the seismic bulb, and an upper electrode piece placed close to and spaced above the lower electrode piece. Since a switch is disposed and a small contact piece actuating ball is disposed between each of the movable contact pieces and the seismic bulb so as to be able to move up and down, the seismic bulb will not move at any time within the casing. Not only is it possible to accurately detect vibrations even when the vibration is reciprocated in the direction of You can definitely get it. Therefore, inconveniences such as erroneous earthquake determination can be avoided, and reliability can be further improved.
また、請求項（２）に記載のように、外側ケーシングの
下端に、該ケーシングをプリント基板に固定するための
脚部と、前記開閉スイッチの引出片に電気的に接続され
た接続端子とをそれぞれ下方突出状に設けることにより
、プリント基板に直接取り付けることができ、しかもリ
ード線を省略することができる。Further, as described in claim (2), a leg portion for fixing the casing to a printed circuit board and a connecting terminal electrically connected to the pull-out piece of the open/close switch are provided at the lower end of the outer casing. By providing them in a downwardly protruding shape, they can be directly attached to a printed circuit board, and lead wires can be omitted.
図面は、この発明の実施例を示すものであり、第１図は
縦断面図、第２図は各構成部材を分解状態にして示した
斜視図、第３図は接片作動用小球受蓋の平面図、第４図
は第３図ＩＶ−ＴＶ線の断面図、第５図（イ）（ロ）は
それぞれ上側電極片および下側電極片の平面図、第６図
は内側ケーシングの平面図、第７図は第６図■−■線の
断面図である。
（１）・・・感震球、（３）・・・（内側）ケーシング
、（４）・・・外側ケーシング、（４ｃ）・・・脚部、
（７）・・・接片作動用小球、（８）・・・下側電極片
、（８ｂ）・・・可動接片、（９）・・・上側電極片、
（１０）・・・開閉スイッチ、（１８）・・・接続端子
、（Ｐ）・・・プリント基板。
以上
第１
図
第２図
第６図
第７図The drawings show an embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a perspective view showing each component in an exploded state, and FIG. 3 is a small ball receiver for actuating the contact piece. A plan view of the lid, Fig. 4 is a sectional view taken along the line IV-TV in Fig. 3, Figs. The plan view and FIG. 7 are sectional views taken along the line ■--■ in FIG. 6. (1)...Seismic ball, (3)...(inner) casing, (4)...outer casing, (4c)...legs,
(7)...Small ball for contact piece operation, (8)...Lower electrode piece, (8b)...Movable contact piece, (9)...Upper electrode piece,
(10)... Open/close switch, (18)... Connection terminal, (P)... Printed circuit board. Above Figure 1 Figure 2 Figure 6 Figure 7
Claims (2)
収納されると共に、該感震球（１）の上部にその転動に
伴って開閉作動されるスイッチ部（２）が設けられてな
る感震装置において、 上記スイッチ部（２）が、互いに等角度を なすように放射状に延びた偶数本の可動接片（８ｂ）を
有する下側電極片（８）とその上部に近接離間状態に配
置された上側電極片（９）とよりなる開閉スイッチ（１
０）と、上記各可動接片（８ｂ）と前記感震球（１）と
の間にそれぞれ上下移動自在に配設され、感震球（１）
の転動時に該球（１）に接触されて前記可動接片（８ｂ
）を上側電極片（９）に接触させるように押上作動せし
める接片作動用小球（７）とで構成されてなるものであ
ることを特徴とする感震装置。(1) A seismic ball (1) is housed in a casing (3) so as to be able to roll freely, and a switch part (2) is provided above the seismic ball (1) and is opened and closed as the ball rolls. In the seismic sensing device, the switch part (2) comprises a lower electrode piece (8) having an even number of movable contact pieces (8b) extending radially at equal angles to each other and an upper part thereof. An open/close switch (1) consisting of an upper electrode piece (9) arranged close to and separated from the
0), each movable contact piece (8b) and the seismic ball (1) are arranged so as to be movable up and down, respectively, and the seismic ball (1)
When the ball (1) rolls, the movable contact piece (8b
2. A seismic sensing device characterized in that it is constituted by a contact piece actuating small ball (7) that is pushed up so as to bring the upper electrode piece (9) into contact with the upper electrode piece (9).
感震球（１）の上部にその転動に伴って開閉作動される
スイッチ部（２）が設けられた内側ケーシング（３）が
、外側ケーシング（４）内に水平状態に保持されるよう
に揺動自在に吊持された感震装置であって、 上記スイッチ部（２）が、互いに等角度を なすように放射状に延びた偶数本の可動接片（８ｂ）を
有する下側電極片（８）とその上部に近接離間状態に配
置された上側電極片（９）とよりなる開閉スイッチ（１
０）と、上記各可動接片（８ｂ）と前記感震球（１）と
の間にそれぞれ上下移動自在に配設され、感震球（１）
の転動時に該球（１）に接触されて前記可動接片（８ｂ
）を上側電極片（９）に接触させるように押上作動せし
める接片作動用小球（７）とで構成されてなる一方、 上記外側ケーシング（４）の下端に、該ケ ーシング（４）をプリント基板（Ｐ）に固定するための
脚部（４ｃ）（４ｃ）と、前記開閉スイッチ（２）に電
気的に接続された接続端子（１８）（１８）とがそれぞ
れ下方突出状に設けられてなることを特徴とする感震装
置。(2) An inner casing in which a seismic ball (1) is housed so as to be able to roll freely, and a switch part (2) that is opened and closed by the rolling of the seismic ball (1) is provided on the top of the seismic ball (1). (3) is a vibration sensing device that is swingably suspended in an outer casing (4) so as to be held in a horizontal state, and the switch portions (2) are arranged at equal angles to each other. An open/close switch (1) consisting of a lower electrode piece (8) having an even number of movable contact pieces (8b) extending radially and an upper electrode piece (9) arranged close to and spaced above the lower electrode piece (8).
0), each movable contact piece (8b) and the seismic ball (1) are arranged so as to be movable up and down, respectively, and the seismic ball (1)
When the ball (1) rolls, the movable contact piece (8b
) and a small ball (7) for pushing up the outer casing (4) so as to bring it into contact with the upper electrode piece (9). Legs (4c) (4c) for fixing to the substrate (P) and connection terminals (18) (18) electrically connected to the opening/closing switch (2) are provided in a downwardly projecting shape, respectively. A seismic sensing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16328990A JPH0658257B2 (en) | 1990-06-21 | 1990-06-21 | Seismic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16328990A JPH0658257B2 (en) | 1990-06-21 | 1990-06-21 | Seismic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0452522A true JPH0452522A (en) | 1992-02-20 |
| JPH0658257B2 JPH0658257B2 (en) | 1994-08-03 |
Family
ID=15770994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16328990A Expired - Fee Related JPH0658257B2 (en) | 1990-06-21 | 1990-06-21 | Seismic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0658257B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06117911A (en) * | 1992-10-07 | 1994-04-28 | Kansai Gasumeeta Kk | Seismoscope |
-
1990
- 1990-06-21 JP JP16328990A patent/JPH0658257B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06117911A (en) * | 1992-10-07 | 1994-04-28 | Kansai Gasumeeta Kk | Seismoscope |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0658257B2 (en) | 1994-08-03 |
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