JPS61144522A - Temperature sensor - Google Patents

Abstract

PURPOSE:To obtain an inexpensive sensor by holding a part of two lead wires from a temperature sensing element, by both surfaces of one holding sheet. CONSTITUTION:A temperature sensing element 10 is constituted by forming electrode films 12a, 12b on the surface and the rear side of a plate-shaped ceramic 11 with a vacuum vapor-deposition, etc. On these electrode films 12a, 12b, respectively, tips 20a of two lead wires 20 are held by a covering 13 formed by means of a resin dipping, etc. as shown by an imaginary line. Rear end parts 20b of the two lead wires 20 are held and fixed by a conductive adhesive agent on the surface and the rear side of one holding sheet 30, respectively, and constituted so that the two lead wires 20 are roughly parallel and not short-circuited, and also the lead wire rear end part 20b is positioned easily against the contact of the connector of a thermometer body.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a temperature sensor for an electronic thermometer, and more particularly to a disposable temperature sensor for an electronic thermometer.

This is a temperature sensor held on both sides of t-1 holding sheets.

<Prior art and its problems> Generally, electronic thermometers, particularly electronic thermometers, in which a temperature sensor having a temperature sensing element and a main body are separable are known. Since the temperature sensor of such an electronic thermometer is disposable, it is sanitary when measuring the body temperature of a large number of subjects in a hospital or the like.

However, the lead wire of the temperature sensing element is very thin and has curls. Therefore, it is easy to put it in the mouth of the test subject,
Also, the lead wire must be held straight to facilitate connection to the connector on the thermometer body.

Conventionally, the temperature sensor of this type of electronic thermometer is coated with an insulating layer 3 on both sides in order to hold the entire temperature-sensing element 1 such as a thermistor and the lead wire 2, and is further coated with an insulating layer 3 to hold the whole of the temperature sensing element 1 such as a thermistor and the lead wire 2. Lead portions (4 gold) were formed on the front and back surfaces of the insulating layer 30 at the ninth point for electrical connection.

Further, as shown in FIG. 11, instead of providing the lead portion shown in FIG. 10, an opening 3at' for exposing the lead wire 2'f was provided in the insulating layer 3.

However, in such a configuration, the temperature sensing element 1 and the leads 1i12 are all covered, and the lead portion 4 or the opening 3a is covered.
Since the ft is provided separately, there is a drawback that the cost is high.

<Objectives of the Invention> In order to eliminate the drawbacks of the above-mentioned conventional example, the present invention aims to provide an inexpensive temperature sensor.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention provides two
It is characterized in that a part of the lead wire of the book is held on both sides of one holding sheet.

In the present invention, since the lead wires are held by one sheet, an inexpensive temperature sensor can be realized.

<Description of Examples> Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the present invention.

The temperature sensing element 10 is constructed by forming electrode films 12a and 12b on the front and back surfaces of a plate-shaped ceramic 11 by vacuum deposition or the like. On the electrode films 12a and L2b, the tips 201L of each of the two lead wires 20 are held by a coating 13 formed by a known method such as resin dipping, as shown by phantom lines.

The rear ends 20b of the two lead wires 20 are coated with conductive adhesive (not shown) on the front and back surfaces of one holding sheet 30, respectively.
The two lead wires 20 are held substantially parallel to each other to prevent short circuits, and the rear ends 20b of the lead wires are configured to be easily positioned with the contacts of the connector of the thermometer main body (not shown). ing. Note that the lead wire 20 may be further held by a separate holding sheet between the temperature sensing element 10 and the holding sheet 30.

In the above embodiment, the rear end portion 20b of the lead wire was held by only the holding sheet 30, but instead, as shown in FIG.
0b't- It may be fixed further, or it may be fixed using a rectangular adhesive tape 32 having an opening as shown in FIG. In either case, the lead wire rear end 2
Since only 0b is retained, the cost is lower than that of the conventional example in which the temperature sensing element and the lead clasp are covered.

In each of the above embodiments, the lead wires 20 are constructed to be substantially parallel, but instead, the lead wires 20 may be twisted together as shown in FIG. 4, or as shown in FIG. It can be twisted together with the soft core wire 21 such as vinyl wire, or
As shown in the figure, the lead wire 20 is connected to the turn υ of the flexible core wire 22.
You can also twist it.

In this case, the insulation effect of the core wires 21 and 22 is added.

Note that this lead wire 20 is coated with insulation (not shown) except for the tip part (the part that connects to the temperature sensing element 1°) and the rear end (the part that connects to the connector of the thermometer body (not shown)). There is.

Further, when the temperature sensing element 10 and the tip end 20a of the lead fa20 are completely held together, the coating is not limited to resin dipping.

FIG. 7 and FIG. 8 show the temperature sensing element 10 etc. being welded, thermocompressed,
An example is shown in which an insulating sheet 14 made of paper, plastic, etc. is covered with an adhesive or the like. In addition, lead wire 2 in Figures 7 and 8
0 and the like are examples having the same configuration as those in FIGS. 4 and 6 described above, respectively.

Furthermore, the temperature sensing element used in the present invention is not limited to the temperature sensing element 10 having the configuration shown in FIG. 1 and FIGS. 4 to 6. The temperature-sensitive cable 100 shown in FIG. 9 is provided with a conductor 15 connected to the electrode film 12b on the back surface of the ceramic 11. In this case, two lead wires 20 are connected to the electrode film 12a on the surface of the ceramic 11, respectively. It is connected to the conductor 15.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a perspective view of a main part of a second embodiment of the invention, and FIG. 3 is a perspective view of a main part of a third embodiment of the invention. 4 is a perspective view of a fourth embodiment of the present invention, FIG. 5 is a perspective view of a fifth embodiment of the present invention, FIG. 6 is a perspective view of a sixth embodiment of the present invention, and FIG. The figure is a perspective view of the seventh embodiment of the present invention, FIG. 8 is a perspective view of the eighth embodiment of the present invention, and FIG. 9 is a perspective view of the temperature sensing element of FIGS. 1 and 4 to 6. FIG. 10 is an exploded perspective view of a conventional temperature sensor, and FIG. 11 is an exploded perspective view of another conventional temperature sensor. 10, Zoo... Temperature sensing element, 20... Lead wire, 30... Holding sheet, 31, 32... Adhesive tape.

Claims (2)

[Claims] (1) A temperature sensor characterized in that parts of two lead wires connected to a temperature sensing element are held on the front and back sides of a holding sheet, respectively. (2) The temperature sensor according to claim 1, wherein the lead wires held on both sides of the holding sheet are further fixed by a fixing member.