Piezoelectric body module

Abstract

The invention provides a piezoelectric body module capable of preventing the pollution of the housing when a conductive body is formed on the outer surface of the piezoelectric body. The piezoelectric body module comprises a polarized piezoelectric body (12), at least two electrodes (12a, 12a) formed on the outer surface of the piezoelectric body, a housing (14) for accommodating the piezoelectric body equipped with an opening (14b) for exposing part of the outer surface of the accommodated piezoelectric body, a conductive body (24) formed by a conductive body and a yielding part (30) connected with the opening so as to be prevented from being contact with the conductive body.

Description

technical field [0001] The present invention relates to a piezoelectric body module suitable for applications such as piezoelectric transformers, piezoelectric actuators, and piezoelectric motors. Background technique [0002] Piezoelectric bodies (piezoelectric elements) are used in such modules. The piezoelectric body has a function of converting electrical energy into mechanical energy, and mechanically vibrates (resonance phenomenon) by applying a voltage. In this piezoelectric body, for example, electrodes are formed on the outer surfaces of the paired outer surfaces in the thickness direction, and polarization treatment is performed. [0003] Here, a structure in which these electrodes are connected by resistance is disclosed (for example, refer to Patent Documents 1 and 2). [0004] This is in consideration of the following aspects: when the temperature around the piezoelectric body changes, electric charges are generated between the electrodes due to the so-called ...

AI Technical Summary

Problems solved by technology

[0008] At this time, if the operator stores the piezoelectric body in the case in a slightly inclined state, the conductive film of the piezoelectric body will come into contact with the case, and the conductive paint will adhere to the case and cause contamination.

[0009] In addition, there is a problem that when the piezoelectric module is directly incorporated into the product, it becomes a cause of damage to the circuit components of the product, etc.

This is because the conductive film adhering to the case may fall off from the case due to the vibration of the piezoelectric body, which may short-circuit the circuit of the product.

[0010] On the other hand, when a conductive coating is formed on the outer surface of the piezoelectric body after being housed in the case, the above-mentioned problems also arise.

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