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Temperature sensor and manufacturing method for same

A temperature sensor and sensor technology, applied in the direction of thermometers, resistors with negative temperature coefficients, thermometer parts, etc., to achieve the effect of improved adhesion and good temperature detection

Inactive Publication Date: 2020-06-05
TATEYAMA KAGAKU SENSOR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Such temperature sensors usually use thermistor elements, but the surface of the thermistor is also covered by an extremely brittle protective film

Method used

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  • Temperature sensor and manufacturing method for same
  • Temperature sensor and manufacturing method for same
  • Temperature sensor and manufacturing method for same

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Embodiment Construction

[0034] Hereinafter, embodiments of the temperature sensor of the present invention and a manufacturing method thereof will be described in detail based on the drawings.

[0035] The temperature sensor of the present invention is provided with: sensor part A, is made up of thermistor element 1 and connecting terminal 2; Configuration; and the covering part C covering the entirety of the sensor part A and the front end part of the cable part B.

[0036] The sensor unit A includes a glass-sealed thermistor element 1 whose surface is covered with a protective film 1a made of glass, and a pair of connection terminals 2, 2 for conducting electricity between the thermistor element 1 and a temperature control circuit.

[0037] The cable part B includes a pair of conductive wires 3, 3 and a sheath 4 made of fluororubber or the like covering the side surfaces thereof, and the pair of conductive wires 3, 3 are soldered to the pair of connection terminals 2, 2, respectively.

[0038] The...

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Abstract

The present invention relates to: a temperature sensor in which a thermistor element is resin molded; and a manufacturing method for the temperature sensor. Provided is a temperature sensor and a manufacturing method therefor, in which airtightness of a thermistor element is enhanced and performance stability and yield during manufacturing are increased. The temperature sensor comprises: a sensorpart (A) composed of a thermistor element (1) and a connection terminal (2); a cable part (B) connected to the connection terminal (2); and a coating part (C) that covers the entirety of the sensor part (A) and the tip of the cable part (B). The coating part (C) comprises: a sensor case (5) having an internal space (5a) that tapers towards the center of the tip where the thermistor element (1) isstored; an elastic resin coating layer (6) covering the entire surface of the thermistor element (1); and a filling resin layer (7) that fills the space between the inner surface of the sensor case (5) and the elastic resin coating layer (6).

Description

technical field [0001] The present invention relates to a temperature sensor in which a thermistor element is resin-molded and a manufacturing method thereof. Background technique [0002] As a known temperature sensor, a sensor part in which a thermistor element and a connection terminal (copper wire or copper-beryllium iron-nickel alloy wire, etc.) The structure which seals the opening part of a case (for example, refer the following patent document 1). [0003] In such a temperature sensor, the corrosion of the metal alloy due to the intrusion of water may cause a disconnection or a short circuit of the sensor part, so it is extremely important to ensure the airtightness inside the sensor part. [0004] Therefore, it has been proposed to insert a resin insulating cap into the opening of a metal case, insert a sensor portion into the opening of the insulating cap, and mold the case and the opening of the insulating cap with resin in this state. And sealed structure. [...

Claims

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Application Information

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IPC IPC(8): G01K7/22G01K1/08H01C1/028H01C7/04
CPCG01K1/08G01K7/22H01C1/028H01C7/04
Inventor 坂本大辅松浦圭祐串田健治
Owner TATEYAMA KAGAKU SENSOR TECH
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