JPS628483Y2

JPS628483Y2 -

Info

Publication number: JPS628483Y2
Application number: JP5131180U
Authority: JP
Priority date: 1980-04-15
Filing date: 1980-04-15
Publication date: 1987-02-27
Also published as: JPS56151903U

Description

【考案の詳細な説明】この考案は、インパルス電圧発生装置等に使用
される２個の放電球の間隙長を検出する球間隙検
出装置において、固定側放電球と可動側放電球と
の球間隙長に比例してポテンシヨメータの接点を
移動するようにし、間隙長を正確に検出するとと
もに、機構を簡略化できるようにした球間隙検出
装置に関する。[Detailed description of the invention] This invention is a sphere gap detection device that detects the gap length between two discharge bulbs used in an impulse voltage generator, etc. The present invention relates to a ball gap detection device in which the contact point of a potentiometer is moved in proportion to the length of the ball to accurately detect the gap length and the mechanism can be simplified.

従来の球間隙検出装置は、第１図に示すよう
に、固定側放電球１に対向する可動側放電球２
を、同図１点鎖線に示すように、可動側放電球２
を支持した回転軸３の回転により移動し、この回
転軸３の回転角度θを検出し、回転角度θに比例
する間隙長の検出を行なつており、たとえば、回
転軸３を回転駆動する駆動軸にギヤを介し、シン
クロ発信器により回転軸３の回転角度を検出して
いる。 As shown in FIG. 1, the conventional sphere gap detection device has a movable discharge bulb 2 facing a fixed discharge bulb 1.
As shown by the dashed line in the same figure, the movable side discharge lamp 2
The rotation angle θ of the rotation shaft 3 is detected, and the gap length proportional to the rotation angle θ is detected. The rotation angle of the rotary shaft 3 is detected by a synchro transmitter via a gear on the shaft.

しかし、従来の検出装置によると、可動側放電
球２は、回転軸３の回転により、可動側放電球
２、回転軸３間の距離を半径とする円弧上を移動
するため、回転軸３の回転角度による間隙長検出
は、円弧の長さｌを検出することになり、実際の
間隙長が、両放電球１，２の球心間を結ぶ線上の
長さＬであるため、誤差が生じ、正確な検出が行
なえない欠点がある。したがつて、この誤差を少
なくするために、２個の放電球１，２を各々小さ
い角度で動かすか、可動側放電球２を回転軸３に
固定する柄を長くし、可動側放電球２の移動距離
に対する回転角度を小さくする必要があり、機構
が極めて複雑になる欠点がある。 However, according to the conventional detection device, the movable discharge lamp 2 moves on an arc whose radius is the distance between the movable discharge lamp 2 and the rotation shaft 3 due to the rotation of the rotation shaft 3. Gap length detection based on the rotation angle involves detecting the length l of the circular arc, and since the actual gap length is the length L on the line connecting the spherical centers of the two discharge bulbs 1 and 2, an error occurs. However, there is a drawback that accurate detection cannot be performed. Therefore, in order to reduce this error, either move the two discharge bulbs 1 and 2 at a small angle, or lengthen the handle that fixes the movable discharge bulb 2 to the rotating shaft 3, and move the movable discharge bulb 2. It is necessary to reduce the rotation angle relative to the moving distance, which has the disadvantage that the mechanism becomes extremely complicated.

この考案は、前記の点に留意してなされたもの
であり、つぎにこの考案を、その１実施例を示し
た第２図以下の図面とともに詳細に説明する。 This invention has been made with the above-mentioned points in mind, and next, this invention will be explained in detail with reference to the drawings starting from FIG. 2 showing one embodiment of the invention.

これらの図面において、４は基台、５は基台４
上に鉛直方向に立設された回転軸、６はモータ等
の駆動源、７は駆動軸であり、駆動源６の駆動に
よる駆動軸７の回転により、回転軸５が回転され
る。８は固定側放電球、９は固定側放電球８に相
対向する可動側放電球であり、回転軸５に柄１０
を介して一体に設けられ、回転軸５の回転により
可動側放電球９が移動され、両放電球８，９間の
間隙長が変化される。なお、第３図に示すよう
に、回転軸５の軸心から両放電球８，９の球心ま
でのそれぞれの距離は等しく形成され、R₁とす
る。１１は基部が回転軸５に一体に固定された第
１レバーであり、柄１０に平行に設けられ、可動
側放電球９と同一角度だけ回転される。１２は第
１レバー１１の先端に設けられた第１ピン、１３
は第１レバー１１の先端側に設けられた直線形ポ
テンシヨメータであり、回転軸５の軸心と固定側
放電球８の球心とを通る鉛直面上に設けられた第
２ピン１４にポテンシヨメータ１３の一端が回転
自在に支持され、ポテンシヨメータ１３の他端側
に形成された摺動溝１５に第１ピン１２が嵌入さ
れている。なお、回転軸５から第１ピン１２およ
び第２ピン１４までのそれぞれの距離は等しく形
成され、r₁とする。１６はポテンシヨメータ１３
の摺動溝１５に沿つて設けられた抵抗であり、そ
の始端がポテンシヨメータ１３の零点１７とな
る。１８は一端が第１ピン１２に回転自在に支持
された第２レバー、１９は第２レバー１８の他端
に支持され摺動溝１５に嵌入された可動接点であ
り、第１レバー１１の回転により可動接点１９が
抵抗１０上を摺動する。なお、第１、第２ピン１
２，１４、零点１７および可動接点１９は同一直
線上にそれぞれ配置されており、第１ピン１２、
可動接点１９間の距離と第２ピン１４、零点１７
間の距離とが等しく形成され、両放電球８，９の
半径をR₂とすると、その距離r₂はR₂・r₁／R₁に設
定されている。すなわち、回転軸５の軸心および
零点１７を通る鉛直面が固定側放電球８に接し、
回転軸５の軸心および可動接点１９を通る鉛直面
が可動側放電球９に接する。２０は間隙長指示計
であり、零点１７から可動接点１９までの抵抗１
６の抵抗値に比例した間隙長の表示がなされる。 In these drawings, 4 is the base, 5 is the base 4
A rotating shaft is vertically provided above, 6 is a drive source such as a motor, and 7 is a drive shaft. Rotation of the drive shaft 7 by driving of the drive source 6 rotates the rotating shaft 5. Reference numeral 8 denotes a fixed discharge lamp, 9 a movable discharge lamp facing the fixed discharge lamp 8, and a handle 10 attached to the rotating shaft 5.
The movable side discharge bulb 9 is moved by the rotation of the rotating shaft 5, and the gap length between the two discharge bulbs 8 and 9 is changed. As shown in FIG. 3, the distances from the axis of the rotating shaft 5 to the spherical centers of both the discharge bulbs 8 and 9 are equal, and are _R1 . Reference numeral 11 denotes a first lever whose base is integrally fixed to the rotating shaft 5, is provided parallel to the handle 10, and is rotated by the same angle as the movable side discharge bulb 9. 12 is a first pin provided at the tip of the first lever 11; 13 is a first pin provided at the tip of the first lever 11;
is a linear potentiometer provided on the tip side of the first lever 11, and is connected to a second pin 14 provided on a vertical plane passing through the axial center of the rotating shaft 5 and the spherical center of the fixed discharge bulb 8. One end of the potentiometer 13 is rotatably supported, and the first pin 12 is fitted into a sliding groove 15 formed at the other end of the potentiometer 13 . Note that the distances from the rotating shaft 5 to the first pin 12 and the second pin 14 are equal, and are defined as _r1 . 16 is potentiometer 13
This is a resistance provided along the sliding groove 15 of the potentiometer 13, and its starting end becomes the zero point 17 of the potentiometer 13. 18 is a second lever whose one end is rotatably supported by the first pin 12; 19 is a movable contact supported by the other end of the second lever 18 and fitted into the sliding groove 15; This causes the movable contact 19 to slide on the resistor 10. Note that the first and second pins 1
2, 14, zero point 17, and movable contact 19 are arranged on the same straight line, and the first pin 12,
Distance between movable contacts 19, second pin 14, and zero point 17
If the radius of both discharge bulbs 8 and 9 is R ₂ , then the distance r ₂ is set to R ₂ ·r ₁ /R ₁ . That is, the vertical plane passing through the axis of the rotating shaft 5 and the zero point 17 is in contact with the stationary side discharge bulb 8,
A vertical plane passing through the axis of the rotating shaft 5 and the movable contact 19 contacts the movable discharge bulb 9 . 20 is a gap length indicator, and the resistance 1 from the zero point 17 to the movable contact 19
The gap length is displayed in proportion to the resistance value of 6.

そして、駆動源６を駆動し、駆動軸７を介して
回転軸５を回転すると、可動側放電球９と第１レ
バー１１とが同一角度だけ回転し、第１ピン１２
の移動に伴なつてポテンシヨメータ１３が第２ピ
ン１４を中心に回転し、可動接点１９が抵抗１６
上を摺動する。ここで、零点１７から可動接点１
９までの距離をl′とし、両放電球８，９間の間隙
長をL′とすると、L′＝l′・R₁／r₁となる。したが
つて、間隙長L′はポテンシヨメータ１３の接点装
置に比例し、可動接点１９の位置を検出すること
により、両放電球８，９間の間隙長を正確に検出
することになる。 Then, when the drive source 6 is driven and the rotation shaft 5 is rotated via the drive shaft 7, the movable side discharge bulb 9 and the first lever 11 are rotated by the same angle, and the first pin 12 is rotated by the same angle.
As the potentiometer 13 moves, the potentiometer 13 rotates around the second pin 14, and the movable contact 19 connects to the resistor 16.
slide on top. Here, from zero point 17 to movable contact 1
If the distance to 9 is l', and the gap length between the two discharge bulbs 8 and 9 is L', then L'=l'·R ₁ /r ₁ . Therefore, the gap length L' is proportional to the contact device of the potentiometer 13, and by detecting the position of the movable contact 19, the gap length between the two discharge bulbs 8, 9 can be accurately detected.

したがつて、前記実施例によると、可動側放電
球９と同一角度だけ回転する第１レバー１１の端
部側に、ポテンシヨメータ１３を設けるととも
に、両放電球８，９間の間隙長に比例して移動す
るポテンシヨメータ１３の可動接点１９を第１レ
バー１１の先端部に第２レバー１８を介して連結
するため、ポテンシヨメータ１３の接点位置を検
出することにより間隙長L′を得ることができ、正
確な両放電球８，９間の間隙長を検出することが
でき、しかも、従来のように、両放電球８，９を
小さい角度で動かす必要も、柄１０を長くする必
要もなく、可動側放電球９を駆動する機構を簡略
化でき、安価にできる。 Therefore, according to the embodiment, the potentiometer 13 is provided on the end side of the first lever 11 that rotates by the same angle as the movable side discharge bulb 9, and the gap length between the two discharge bulbs 8, 9 is adjusted. Since the movable contact 19 of the potentiometer 13, which moves proportionally, is connected to the tip of the first lever 11 via the second lever 18, the gap length L' can be determined by detecting the contact position of the potentiometer 13. The length of the gap between the two discharge bulbs 8, 9 can be accurately detected, and there is no need to move the two discharge bulbs 8, 9 at a small angle as in the conventional method, by lengthening the handle 10. This is not necessary, and the mechanism for driving the movable side discharge lamp 9 can be simplified and the cost can be reduced.

以上のように、この考案によればポテンシヨメ
ータに設けた抵抗の零点は回転軸の軸心と固定側
放電球に接する鉛直面上にあるとともに、この抵
抗に接する可動接点の位置は回転軸の軸心と可動
側放電球に接する鉛直面上にあり、この零点と可
動接点間の長さは両球心間を結ぶ線上の間隙長に
比例するので、このポテンシヨメータの接点位置
を検出することにより極めて正確に両放電球間の
間隙長を検出することができる外、その構成も簡
単なものとすることができる。 As described above, according to this invention, the zero point of the resistance provided in the potentiometer is on the vertical plane that is in contact with the axis of the rotating shaft and the fixed discharge bulb, and the position of the movable contact that is in contact with this resistance is on the rotating axis. The contact position of this potentiometer is detected because the length between this zero point and the movable contact is proportional to the gap length on the line connecting both ball centers. By doing so, the gap length between the two discharge bulbs can be detected extremely accurately, and the configuration thereof can also be simplified.

[Brief explanation of the drawing]

第１図は従来の球間隙検出装置の概略図、第２
図以下の図面はこの考案の球間隙検出装置の１実
施例を示し、第２図は斜視図、第３図は要部の平
面図である。５……回転軸、８……固定側放電球、９……可
動側放電球、１１……第１レバー、１３……直線
形ポテンシヨメータ、１９……可動接点。 Figure 1 is a schematic diagram of a conventional ball gap detection device, Figure 2
The following drawings show one embodiment of the ball gap detection device of this invention, with FIG. 2 being a perspective view and FIG. 3 being a plan view of the main parts. 5... Rotating shaft, 8... Fixed side discharge bulb, 9... Movable side discharge bulb, 11... First lever, 13... Linear potentiometer, 19... Movable contact.

Claims

[Scope of utility model registration request]

A fixed side discharge bulb is fixed, a rotating shaft is vertically erected, a handle is fixed to the rotating shaft, and the distance from the axis of the rotating shaft fixed to the handle to the center of the ball is the rotational axis. a movable discharge bulb having a distance equal to the distance from the axis of the shaft to the spherical center of the fixed discharge bulb; a first lever having a base fixed to the rotating shaft and provided parallel to the handle; a second lever rotatably supported at the tip via a first pin;
a second pin provided on a vertical plane passing through the axis of the rotating shaft and the spherical center of the stationary side discharge bulb;
A linear potentiometer rotatably supported using a pin as a fulcrum, a sliding groove formed in the potentiometer, a resistor provided along the sliding groove, and a tip end of the second lever. a movable contact provided in the sliding groove and slidably in contact with the resistor, the distance from the first pin to the movable contact being equal to the distance from the second pin to the zero point of the resistor. A vertical plane passing through the axis of the rotating shaft and the zero point of the resistance is in contact with the fixed discharge bulb, and a vertical plane passing through the axis of the rotating shaft and the movable contact is in contact with the movable discharge bulb. Ball gap detection device.