Capacitor structure and pressure sensor
A capacitor structure, fixed electrode technology, applied in the direction of laminated capacitors, fluid pressure measurement using capacitance changes, fixed capacitor electrodes, etc.
Pending Publication Date: 2022-04-12
北京晨晶精仪电子有限公司
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Problems solved by technology
[0004] The invention provides a capacitor structure and a pressure sensor, which are used to solve the problem that it is difficult to ensure the production accuracy of film capacitors in the prior art
Method used
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Embodiment Construction
[0030] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0031] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing this The embodiments and simplified descriptions of the invention do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed a...
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Abstract
The invention relates to the technical field of detection elements, and provides a capacitor structure and a pressure sensor.The capacitor structure comprises a shell and a sensing module, and one side of the shell is provided with an air vent; the induction module is fixedly arranged in the shell and comprises a fixed electrode, a film electrode and a first connecting layer, the fixed electrode is a quartz fixed electrode, the film electrode is a quartz movable electrode, and the fixed electrode is fixed to the side, away from the ventilation opening, of the film electrode through the first connecting layer; the first connecting layer is arranged between the fixed electrode and the film electrode so that a gap can be formed between the fixed electrode and the film electrode, the film electrode and the side, away from the ventilation opening, of the shell define a sealing cavity, and the film electrode and the side, provided with the ventilation opening, of the shell define a process cavity. According to the capacitor structure and the pressure sensor provided by the invention, the fixed electrode is fixedly connected with the film electrode to form a modular structure, so that assembly is facilitated.
Description
technical field [0001] The invention relates to the technical field of detection elements, in particular to a capacitor structure and a pressure sensor. Background technique [0002] Metal film capacitors are sealed together with the metal case by metal welding, but during the sealing process, if no or a low value of pretension is applied, the film will wrinkle, and excessive deformation will easily occur after loading phenomenon, and under the action of external excitation, it is easy to vibrate; and if the pre-tension is too large, it will increase the difficulty of installation. After the film is loaded, it will cause excessive stress and difficult assembly. It is difficult to ensure the flatness and Leveling ability, which will inevitably lead to a substantial increase in cost. [0003] Non-metallic film capacitors generally use ceramic films. This solution uses solder to weld the films and fixed electrodes together. Different films cooperate with different fixed electr...
Claims
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IPC IPC(8): H01G4/33H01G4/008G01L1/14G01L9/12
Inventor 刘旭强张琳琳林立男韩雪飞廖兴才曹文静姜浩延陶硕高乐
Owner 北京晨晶精仪电子有限公司