JPH0511569B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a mainly disposable temperature sensor used in an electronic thermometer.

<<Summary of the Invention>> A cut-out piece is formed in the opening for exposing the lead wire of an insulating layer that covers and seals the lead wire and the temperature-sensitive element, and the insulating layer is removed with the lead wire positioned inside the cut-out piece. By gluing them together, the cut and raised pieces were folded flat within the opening, and the lead wires were exposed on the surface of the opening.

《Prior art and its problems》 As this type of temperature sensor, for example, the
There is a disposable temperature sensor disclosed in Publication No. 56-5001.

This temperature sensor seals a pair of lead wires and a temperature sensing element between at least two insulating layers, and punches an opening in the insulating layer corresponding to the connection end of the lead wire to the electronic thermometer side. It has a structure in which the lead wire is exposed inside the opening.

This sensor is used, for example, in a hospital, where the sensor is placed under the patient's tongue in advance and the connecting end is connected to an electronic thermometer.

Therefore, when making measurements using this type of temperature sensor, the connection end and the electronic thermometer must be connected reliably.

However, in conventional temperature sensors, although the lead wire is exposed inside the opening, due to the thickness of the insulating layer, the connection between the electronic thermometer side connector and the lead wire side connection end is made up of the thickness of the insulating layer. There was a risk that the contact would become unstable.

<<Object of the Invention>> The object of the present invention is to more securely connect this type of temperature sensor to an electronic thermometer.

<Structure and Effects of the Invention> In order to achieve the above object, the present invention seals a pair of lead wires and a temperature sensing element connected to the tip of each lead wire between at least two insulating layers, and A temperature sensor in which an insulating layer portion corresponding to the other end side is opened and a lead wire is exposed in the opening, wherein a cut-out piece is formed in the opening of the insulating layer with one side remaining, and A lead wire is positioned inside the cut-and-raised piece, and the insulating layers are bonded to each other, so that the cut-and-raised piece is folded flat into the opening, and the lead wire is exposed on the surface of the opening. .

According to the above configuration, as a result of the cut-and-raised piece being pressed by the insulating layer, the connection end of the lead wire located inside the cut-and-raised piece is exposed to the surface of the opening, and as a result, the electron temperature The connection with the connecting tool of the meter can be made more securely.

<<Description of Embodiments>> FIGS. 1 and 2 show a temperature sensor according to the present invention.

This temperature sensor has a pair of lead wires 3 sandwiched in the longitudinal direction between two insulating layers, that is, insulating sheets 1 and 2, and a temperature sensing element 4 such as a thermistor is embedded integrally at the tip of the lead wire 3. ing.

Openings 1a and 2a are punched out in the insulating sheets 1 and 2 at locations where the thermistors 4 are located. The outer periphery of the opening portions 1a, 2a is covered with a water-resistant covering sheet 6, on the surface of the insulating sheets 1, 2.
7 by welding or gluing.

In addition, the connection end 3a of the lead wire is connected to the insulating sheet 2.
It is exposed by forming an opening 5 on the side.

A cut-out piece 2a is provided on the back side of the opening 5a.
is formed by cutting out one side of the opening 5a, and when this cut-and-raised piece 2b is adhered to the insulating sheet 1 side, the connection end 3a is pressed against the cut-and-raised piece 2a, and the opening 5 is cut out. Exposed in a protruding manner on the surface.

Next, a preferred method of manufacturing the temperature sensor having the above configuration will be explained using FIG. 3.

FIG. 3a shows sheet materials for making the temperature sensor, including a sheet material 20 corresponding to the insulating sheet 2, a sheet material 10 corresponding to the insulating sheet 1, and sheets corresponding to the covering sheets 6 and 7. 6
It consists of 0.70.

Each sheet material 10, 20, 60, 70 is a continuous paper, and both sides of the sheet material 20 in the width direction are continuously provided with feed holes 2 at a constant pitch along the longitudinal direction.
a, 20b are open, and the sheet material 10
Sprocket holes 10a and 10b are also provided at similar pitches.

For each pitch of each feed hole 20a, 20b, a pair of cut-out pieces 2b forming an opening 2a for housing the temperature sensing element and the opening 5 are formed at one end, leaving one side in the width direction. Continuously stamped and formed. Furthermore, openings 1a are formed in the sheet material 10 at every pitch.

Pins (not shown) are arranged on both sides of the sheet material 20 in the width direction, and a wire 30 constituting the lead wire 3 is stretched between the pins in an S-shape. Adjacent wires 30 are positioned above the opening 2a and the pair of cut and raised pieces 2b as a result of being positioned by the pins.

In this state, the temperature sensing element 4 is joined by positioning the temperature sensing element in the opening 2a and soldering both ends between the wires.

In addition, with the wire 30 being stretched, the push-up pin 200 is pushed up from the back surface of the sheet 20 as shown in FIG.
b is flexibly deformed and stands up diagonally, and the wire 3
0 is located inside the cut and raised piece 2b.

In this state, by laminating another sheet material 10 onto the sheet material 20 by thermocompression bonding or the like, the cut-out piece 2b is folded flat on the front side of the sheet 20 as shown in FIG. 3c. As a result, the wire 30 is exposed on the surface of the sheet 20.

FIG. 4 is a sectional view showing the exposed state.

In the figure, the wire 30 is flexibly deformed as a result of being pressed by the cut-and-raised piece 2b, and is exposed on the surface of the sheet 20, or at least exposed in a permanent state.

After laminating as described above, the covering sheets 6 and 7 are continuously pasted, the wires 30 are separated by cutting both ends in the width direction, and then the perforation holes are separated in units of sections and each pitch is cut out to form a predetermined pitch. By trimming to the shape, a temperature sensor having the shape shown in FIG. 1 is obtained.

In the above embodiment, the sheet was processed while being continuously fed in consideration of production efficiency, but it is also possible to manufacture the sheet one by one.

In addition, as for the forming part of the cut-and-raised piece, for example, as shown in FIG. 5, an opening 5A may be formed in the insulation of the insulating sheet 2, and a cut-and-raised piece 2b may be formed to cover the opening 5A. However, as shown in FIG. 6, it is also possible to form an opening 5B at the end of the insulating sheet 2 and form the cut-and-raised piece 2b in this portion.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a temperature sensor according to the present invention;
Fig. 2 is a cross-sectional view of the same, and Fig. 3 shows a preferred manufacturing example of the temperature sensor, in which a is an exploded perspective view showing the material structure of the temperature sensor, and b is a cut-and-bend by pushing up the cut-and-bend piece 2b. An explanatory diagram showing the process of positioning the wire inside the piece, c is a cross-sectional view showing the exposed state of the wire, FIG. 4 is a cross-sectional view taken along the - line in FIG. 3 c, and FIG. 5 is the formation of the cut and raised piece. FIG. 6 is a perspective view showing still another example of the location where the cut-and-raised piece is formed. 1, 2...Insulating sheet, 2b...Cut up piece, 3...
Lead wire, 3a... Connection end, 4... Temperature sensing element.

Claims (1)

[Claims] 1. A pair of lead wires and a temperature sensing element connected to the tip of each lead wire are sealed between at least two insulating layers, and an insulating layer portion corresponding to the other end of the lead wire is sealed. The temperature sensor has an opening and a lead wire is exposed in the opening, wherein a cut-out piece is formed in the opening of the insulating layer with one side remaining, and a lead wire is placed inside the cut-out piece. 1. A temperature sensor for an electronic thermometer, characterized in that the cut-and-raised piece is flatly folded into the opening by placing the insulating layers on each other and adhering the insulating layers to each other, and the lead wire is exposed on the surface of the opening.