JPH0345162Y2 - - Google Patents

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Publication number
JPH0345162Y2
JPH0345162Y2 JP16048883U JP16048883U JPH0345162Y2 JP H0345162 Y2 JPH0345162 Y2 JP H0345162Y2 JP 16048883 U JP16048883 U JP 16048883U JP 16048883 U JP16048883 U JP 16048883U JP H0345162 Y2 JPH0345162 Y2 JP H0345162Y2
Authority
JP
Japan
Prior art keywords
piezoelectric
case
hole
piezoelectric element
acupressure
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
Application number
JP16048883U
Other languages
Japanese (ja)
Other versions
JPS6068448U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP16048883U priority Critical patent/JPS6068448U/en
Priority to US06/661,542 priority patent/US4604544A/en
Publication of JPS6068448U publication Critical patent/JPS6068448U/en
Application granted granted Critical
Publication of JPH0345162Y2 publication Critical patent/JPH0345162Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 〔考案の技術分野〕 本考案は、エンジンのシリンダ内圧力、すなわ
ち指圧線図の計測に用いられる圧電型指圧計に係
り、特にケース内に圧電素子を収納して組立てる
際に該圧電素子の乾燥効果を高めて組立てを行え
るようにした圧電型指圧計に関するものである。
[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a piezoelectric shiatsu gauge used to measure the internal cylinder pressure of an engine, that is, the shiatsu chart. The present invention relates to a piezoelectric acupressure meter that can be assembled by increasing the drying effect of the piezoelectric element.

〔従来技術〕[Prior art]

従来の圧電型指圧計の一例を第1図に示して説
明すると、同図において、1はステンレスなどの
金属からなるケースとしての筒状のスリーブであ
り、その底部1aの内周面には同一材質からなる
板状の受圧部2が装着されている。また、スリー
ブ1の内周面にはテフロンなどの筒状の絶縁部材
3が挿入されていて、該絶縁部材3内の受圧部2
の上面にはX軸カツトの水晶よりなる板状の圧電
素子4a〜4eが積層して配置されている。この
場合、前記絶縁部材3と圧電素子4a〜4eとの
間には所定の隙間部5が設けられており、各圧電
素子4a〜4eはX軸方向へ加圧されたときに発
生する電荷の極性に応じてその電荷を加算する如
く各電極が相互に接続されている。
An example of a conventional piezoelectric acupressure meter is shown and explained in Fig. 1. In the figure, numeral 1 is a cylindrical sleeve made of metal such as stainless steel as a case, and the inner circumferential surface of the bottom part 1a has the same shape. A plate-shaped pressure receiving part 2 made of a material is attached. Further, a cylindrical insulating member 3 made of Teflon or the like is inserted into the inner peripheral surface of the sleeve 1, and a pressure receiving portion 2 inside the insulating member 3 is inserted.
Plate-shaped piezoelectric elements 4a to 4e made of X-axis cut crystal are stacked and arranged on the upper surface of the device. In this case, a predetermined gap 5 is provided between the insulating member 3 and the piezoelectric elements 4a to 4e, and each piezoelectric element 4a to 4e is free of charge generated when pressurized in the X-axis direction. The electrodes are connected to each other so that their charges are added according to their polarities.

また、前記圧電素子4a〜4eの上面には電極
をかねるタングステンからなる加速度補正用の重
り(マスともいう)6が載置され、その重り6の
上面にX軸カツトの穴あき水晶よりなる加速度補
正用圧電素子7が載置されている。さらに、前記
圧電素子7の上面には貫通穴9を有するステンレ
スからなるブツシユ部材8が密着して配置され、
該ブツシユ部材8によりケース1の上面開口部1
bが閉塞されている。そして、加速度補正用重り
6の上面中央部に接続されたリード線10は加速
度補正用圧電素子7の貫通穴7aを通して前記貫
通穴9の所定箇所でターミナル11に接続されて
外部に引き出されるとともに、該ターミナル11
がシール部材12により封着されてブツシユ部材
8の貫通穴9を気密封止するように構成されてい
る。
Further, an acceleration correction weight (also referred to as a mass) 6 made of tungsten and serving as an electrode is placed on the top surface of the piezoelectric elements 4a to 4e, and an acceleration correction weight 6 made of a perforated crystal with an X-axis cut is placed on the top surface of the weight 6. A correction piezoelectric element 7 is mounted. Furthermore, a bushing member 8 made of stainless steel and having a through hole 9 is disposed in close contact with the upper surface of the piezoelectric element 7.
The upper opening 1 of the case 1 is opened by the bushing member 8.
b is occluded. The lead wire 10 connected to the center of the upper surface of the acceleration correction weight 6 passes through the through hole 7a of the acceleration correction piezoelectric element 7 and is connected to a terminal 11 at a predetermined position in the through hole 9, and is pulled out to the outside. The terminal 11
is sealed by a sealing member 12 to hermetically seal the through hole 9 of the bushing member 8.

なお、前記加速度補正用圧電素子7と積層構造
の圧電素子4a〜4eとは、加速度による慣性力
によつて発生する電荷を相殺するよう各々の電極
が加速度補正用重り6を通じて相互に接続されて
いて、加速度補正用重り6のリード線10が引き
出されたターミナル11とケース1との間で出力
を取り出すものとなつている。
Note that the acceleration correction piezoelectric element 7 and the laminated piezoelectric elements 4a to 4e are connected to each other through an acceleration correction weight 6, so that the electrodes of each piezoelectric element 7 and the laminated piezoelectric elements 4a to 4e are mutually connected to each other through an acceleration correction weight 6 so as to cancel the electric charges generated by inertial force due to acceleration. The output is taken out between the case 1 and the terminal 11 from which the lead wire 10 of the acceleration correction weight 6 is drawn out.

ところで、かかる構成の圧電型指圧計において
各々の圧電素子4a〜4eおよび7から発生する
電荷はきわめて小さく、そのリークを小さくしか
つ圧電素子の劣化を防止するために、通常、スリ
ーブ1内に残留する水分を乾燥させるか、あるい
は水分の少ない環境下で組立てる方法が行われて
いる。しかし、スリーブ1内の水分を乾燥させる
際、第1図に示すように、最上段の圧電素子7と
ブツシユ部材8が密着して取り付けられているた
め、通気性がきわめて悪くなり、その結果、乾燥
工程に長時間を要したり、また十分な乾燥が行な
えず、圧電素子の劣化を生じるなどの不具合があ
つた。
By the way, in the piezoelectric acupressure meter having such a configuration, the electric charge generated from each of the piezoelectric elements 4a to 4e and 7 is extremely small, and in order to reduce the leakage and prevent deterioration of the piezoelectric elements, the electric charge is usually left in the sleeve 1. Methods of assembling in an environment with little moisture are being used. However, when drying the moisture inside the sleeve 1, as shown in FIG. There were problems such as the drying process taking a long time and insufficient drying, resulting in deterioration of the piezoelectric element.

〔考案の概要〕[Summary of the idea]

本考案は、以上の点に鑑みてなされたもので、
圧電素子が収納されたケースの上面開口部を閉塞
するブツシユ部材の底面に、該底面に貫通して施
された貫通穴と連通して通気用の溝を設け、乾燥
工程時におけるケース内部の通気性を良好ならし
めることにより、圧電素子の乾燥効果を高めて信
頼性を向上させるとともに、コストの低減をはか
ることができる圧電型指圧計を提供するものであ
る。以下、本考案の実施例を図面につき説明す
る。
This invention was made in view of the above points,
A ventilation groove is provided on the bottom surface of the bushing member that closes the top opening of the case in which the piezoelectric element is housed, communicating with a through hole made through the bottom surface, so that the inside of the case can be ventilated during the drying process. The present invention provides a piezoelectric acupressure meter that can enhance the drying effect of the piezoelectric element and improve its reliability by improving the properties of the piezoelectric element, and can also reduce costs. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

〔実施例〕〔Example〕

第2図および第3図は本考案の一実施例による
圧電型指圧計の概略構造を示す断面図およびブツ
シユ部材の斜視図である。この実施例の指圧計
は、スリーブ1に装着された受圧部2の上面に圧
電素子4a〜4eと加速度補正用重り6および加
速度補正用圧電素子7を順次積層してこれらをス
リーブ1内に収納し、該スリーブ1の上面開口部
1bをブツシユ部材8で閉塞して前記加速度補正
用重り6に接続されたリード線10をブツシユ部
材8の貫通穴9を通して引き出すとともに、該貫
通穴9を気密封止するように構成されている点は
第1図に示した従来のものと同様であるが、前記
ブツシユ部材8の貫通穴9を、スリーブ1内に積
層された圧電素子4a〜4eとそれらを絶縁する
絶縁部材3との隙間部5に連通させるように該ブ
ツシユ部材8の底面8aに十字状を有する通気用
の溝20を設けたものである。
2 and 3 are a cross-sectional view and a perspective view of a bushing member, respectively, showing a schematic structure of a piezoelectric acupressure meter according to an embodiment of the present invention. In the acupressure meter of this embodiment, piezoelectric elements 4a to 4e, an acceleration correction weight 6, and an acceleration correction piezoelectric element 7 are sequentially laminated on the upper surface of a pressure receiving part 2 attached to a sleeve 1, and these are housed in the sleeve 1. Then, the upper opening 1b of the sleeve 1 is closed with a bushing member 8, the lead wire 10 connected to the acceleration correction weight 6 is pulled out through the through hole 9 of the bushing member 8, and the through hole 9 is hermetically sealed. The structure is similar to that of the conventional one shown in FIG. A cross-shaped ventilation groove 20 is provided on the bottom surface 8a of the bushing member 8 so as to communicate with the gap 5 between the insulating member 3 and the insulating member 3.

このように、スリーブ1の上面開口部1bを閉
塞するブツシユ部材8の底面にその貫通穴9と連
通して通気用の溝20を設けることにより、指圧
計組立の気密封止前、つまりブツシユ部材8の貫
通穴9をシール部材12にて封着する前の乾燥工
程においてスリーブ1内の水分を通気用溝20お
よび前記貫通穴9を通して放出できるので、その
通気性が著しく向上して乾燥工程を大幅に削減で
きる。そのため、水分の少ない特殊な環境下で組
立てることもなく、短時間の乾燥工程の後にブツ
シユ部材8の貫通穴9を従来と同様の方法で気密
封止することにより、スリーブ1内の水分を除去
して各圧電素子4a〜4eおよび7の乾燥効果を
高めることができる。
In this way, by providing the ventilation groove 20 in communication with the through hole 9 on the bottom surface of the bushing member 8 that closes the upper surface opening 1b of the sleeve 1, the bushing member In the drying process before sealing the through holes 9 of 8 with the sealing member 12, the moisture inside the sleeve 1 can be released through the ventilation grooves 20 and the through holes 9, so that the air permeability is significantly improved and the drying process is completed. This can be significantly reduced. Therefore, there is no need to assemble in a special environment with little moisture, and the moisture inside the sleeve 1 is removed by hermetically sealing the through hole 9 of the bushing member 8 in the same manner as before after a short drying process. Thus, the drying effect of each piezoelectric element 4a to 4e and 7 can be enhanced.

なお、上述した実施例では加速度補正機構を備
えた圧電型指圧計の場合について示したが、本考
案はこれに限定されるものではなく、ケース内に
圧電素子を積層して該ケースの上面開口部をブツ
シユ部材にて閉塞する構造を有する通常の圧電型
指圧計にも同様に適用できることは勿論である。
In addition, although the above-mentioned embodiment shows the case of a piezoelectric acupressure meter equipped with an acceleration correction mechanism, the present invention is not limited to this. Needless to say, the present invention can be similarly applied to a general piezoelectric type acupressure gauge having a structure in which the section is closed with a bushing member.

〔考案の効果〕[Effect of idea]

以上説明したように、本考案の圧電型指圧計に
よれば、圧電素子が積層されたケースの上面開口
部を閉塞するブツシユ部材の底面に、該底面に貫
通して施された貫通穴と連通して通気用の溝を設
けることにより、乾燥工程時におけるケース内部
の通気性が良くなつてその工程を大幅に削除で
き、製造コストの低減化がはかれる。しかも、ケ
ース内の圧電素子を十分に乾燥できるので、各素
子間のリークが少なくなるとともに素子の劣化が
防止でき、信頼性の向上がはかれるなどの効果が
ある。
As explained above, according to the piezoelectric acupressure meter of the present invention, the bottom surface of the bushing member that closes the top opening of the case in which the piezoelectric elements are stacked communicates with the through hole formed through the bottom surface. By providing ventilation grooves, the air permeability inside the case during the drying process is improved, and this process can be largely omitted, leading to a reduction in manufacturing costs. Moreover, since the piezoelectric elements inside the case can be sufficiently dried, leakage between the elements is reduced, deterioration of the elements can be prevented, and reliability can be improved.

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

第1図は従来例による圧電型指圧計の概略構造
を示す断面図、第2図および第3図は本考案の一
実施例による圧電型指圧計の概略構造を示す断面
図およびブツシユ部材の斜視図である。 1……スリーブ、2……受圧部、3……絶縁部
材、4a〜4e……圧電素子、5……隙間部、6
……加速度補正用重り、7……加速度補正用圧電
素子、8……ブツシユ部材、9……ブツシユ部材
の貫通穴、10……リード線、11……ターミナ
ル、12……シール部材、20……通気用溝。
FIG. 1 is a sectional view showing a schematic structure of a piezoelectric shiatsu gauge according to a conventional example, and FIGS. 2 and 3 are sectional views showing a schematic structure of a piezoelectric shiatsu gauge according to an embodiment of the present invention, and a perspective view of a bushing member. It is a diagram. DESCRIPTION OF SYMBOLS 1... Sleeve, 2... Pressure receiving part, 3... Insulating member, 4a-4e... Piezoelectric element, 5... Gap part, 6
... Weight for acceleration correction, 7 ... Piezoelectric element for acceleration correction, 8 ... Bush member, 9 ... Through hole of bush member, 10 ... Lead wire, 11 ... Terminal, 12 ... Seal member, 20 ... ...ventilation groove.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ケースに装着された受圧部の上面にその圧力を
電気信号に変換するための圧電素子を積層してこ
れら圧電素子をケース内に収納し、該ケースの上
面開口部を貫通穴を有するブツシユ部材で閉塞し
て、前記圧電素子の電極に接続されたリード線を
前記貫通穴を通して引き出すとともに、該貫通穴
を気密封止するように構成された圧電型指圧計に
おいて、前記ブツシユ部材の底面に、その貫通穴
を前記ケース内に積層された圧電素子と該ケース
との隙間部に連通させるように通気用の溝を設け
たことを特徴とする圧電型指圧計。
A piezoelectric element for converting the pressure into an electric signal is laminated on the upper surface of the pressure receiving part attached to the case, and these piezoelectric elements are housed in the case, and the upper surface opening of the case is formed by a bushing member having a through hole. In the piezoelectric acupressure gauge, the piezoelectric acupressure meter is configured to be closed and to draw out a lead wire connected to an electrode of the piezoelectric element through the through hole, and to hermetically seal the through hole. A piezoelectric acupressure gauge, characterized in that a ventilation groove is provided so that the through hole communicates with a gap between the piezoelectric elements laminated in the case and the case.
JP16048883U 1983-10-17 1983-10-17 piezoelectric acupressure meter Granted JPS6068448U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP16048883U JPS6068448U (en) 1983-10-17 1983-10-17 piezoelectric acupressure meter
US06/661,542 US4604544A (en) 1983-10-17 1984-10-16 Piezoelectric pressure indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16048883U JPS6068448U (en) 1983-10-17 1983-10-17 piezoelectric acupressure meter

Publications (2)

Publication Number Publication Date
JPS6068448U JPS6068448U (en) 1985-05-15
JPH0345162Y2 true JPH0345162Y2 (en) 1991-09-24

Family

ID=30352977

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16048883U Granted JPS6068448U (en) 1983-10-17 1983-10-17 piezoelectric acupressure meter

Country Status (1)

Country Link
JP (1) JPS6068448U (en)

Also Published As

Publication number Publication date
JPS6068448U (en) 1985-05-15

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