JPH0243625U

JPH0243625U -

Info

Publication number: JPH0243625U
Application number: JP12048788U
Authority: JP
Priority date: 1988-09-16
Filing date: 1988-09-16
Publication date: 1990-03-26
Anticipated expiration: 2003-09-16
Also published as: JPH076499Y2

Description

[Brief explanation of the drawing]

第１図は本考案による高安定型静電容量式荷重
検出装置の１実施例を示す側断面図、第２図は第
１図の分解斜視図、第３図は第１図のセンサ部分
の等価回路図、第４図、第５図は特性の説明図、
第６図は従来の静電容量式荷重検出装置を示す図
、第７図は第６図のセンサ部分の等価回路図であ
る。図において、１，１′……センサ部分、１，１
′……絶縁性固定基板、１２，１２′……ギヤツ
プ形成用積層部、１１，１１′……電極部、２…
…恒弾性合金による可動基板、２′……金属材料
可動基板、３……金属加圧棒、３′……樹脂加圧
棒、４，４′……樹脂ケース、４１′……底部分
、４１，４２，４３，４４……突起部分、５……
絶縁板、６，６′……シヤフト受けバネ、７，７
′……モーターシヤフト、８，８′……台座、８
１，８２，８３，８４……中空部分、８５，８６
……切りかき部分、９……センサ受板。 Fig. 1 is a side sectional view showing one embodiment of a highly stable capacitive load detection device according to the present invention, Fig. 2 is an exploded perspective view of Fig. 1, and Fig. 3 is an exploded perspective view of the sensor portion of Fig. 1. Equivalent circuit diagram, Figures 4 and 5 are explanatory diagrams of characteristics,
FIG. 6 is a diagram showing a conventional capacitive load detection device, and FIG. 7 is an equivalent circuit diagram of the sensor portion of FIG. 6. In the figure, 1, 1'...sensor part, 1, 1
'... Insulating fixed substrate, 12, 12'... Gap forming laminated part, 11, 11'... Electrode part, 2...
...Movable substrate made of constant elastic alloy, 2'...Metal material movable substrate, 3...Metal pressure rod, 3'...Resin pressure rod, 4, 4'...Resin case, 41'...Bottom part, 41, 42, 43, 44... protruding portion, 5...
Insulating plate, 6, 6'...Shaft receiving spring, 7, 7
'... Motor shaft, 8, 8'... Pedestal, 8
1, 82, 83, 84...Hollow part, 85, 86
……Cut portion, 9…Sensor receiving plate.

Claims

[Claims for Utility Model Registration] (1) A sensor receiving plate 9, an insulating fixed substrate 1, and a movable substrate 2 made of a metal material are stacked on a pedestal 8,
On the other hand, a resin case 4 is fixed to a pedestal 8 so as to cover the sensor receiving plate 9, the insulating fixed substrate 1, and the movable substrate 2, and a pressure rod 3 made of a metal material is provided at the upper center of the resin case 4. is penetrated, and the lower surface of the pressure rod is in close contact with the movable substrate 2, while the upper surface of the pressure rod 3 is interlocked with the shaft receiving spring 6 via the insulating plate 5, and is movable with the insulating fixed plate 1. A highly stable capacitive load detection device formed by forming an air capacitor with electrode 2. (2) The resin case 4 has a cap-like shape with an open bottom, and a square inner part.
The dimension of one side of the inner side corresponds to the dimension of one side of the sensor receiving plate 9 and the insulating fixed substrate 1, and also corresponds to the outer diameter dimension of the movable substrate 2, and the upper center part is pressurized. A hollow hole is drilled for passing through the rod, and four holes are formed on the end face of the lower part for fixing the rod to the pedestal. Highly stable capacitive load detection device. (3) A laminated portion for forming a gap is provided on the insulating fixed substrate 1, and the metal movable substrate is closely attached to the laminated portion for forming the gap without adhesive. A highly stable capacitive load detection device according to scope 1. (4) The highly stable capacitive load detection device according to claim 1, wherein the metal movable substrate 2 is a constant modulus alloy. (5) The insulating plate 5 has a cross-sectional area approximately equal to the horizontal cross-sectional area of the pressure rod 3 made of metal material, and at least covers the lower surface of the shaft receiving spring 6 or the upper surface of the pressure rod. A highly stable capacitive load detection device according to claim 1, which is fixed to either side.