JPH0729470Y2 - Thermocouple connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a simple thermocouple connector having excellent workability and high reliability.

[Conventional technology]

Conventionally, thermocouples are often used as temperature measuring sensors. In particular, thermocouples are widely used for temperature monitoring of various electric products and temperature measurement in various experiments because they have a wide measuring temperature range and can use extremely thin wires. In particular, temperature is often measured at a large number of places such as a laboratory-level temperature monitor, for example, a model experiment of a chemical plant. The advantage of using a thermocouple is that the sensor can be inserted and fixed in a minimum portion such as a gap.

On the other hand, a thermocouple needs to amplify a small amount of thermoelectromotive force with an amplifier. Therefore, it is essential to use a connector that has a highly reliable electrode (counter electrode) of the same material as the thermocouple with the amplifier. Is. As such a conventional thermocouple connector, for example, JP-A-63-21768 and JP-A-58-58
-164181 Public information is known. However, all of these connectors have the drawbacks of complicated structure and high cost. Therefore, there has been a demand for a low-priced, simple thermocouple connector that is close to a disposable product and that eliminates such drawbacks.

Besides, a simple thermocouple connector as shown in FIG. 3 has been conventionally known. This is one in which a thermocouple (1) is attached to the surface of a soft resin sheet material (2), and an adhesive film (3) having two holes is covered from the top of the sheet material (2). An adhesive film is also attached to the back surface of 2). A heat-shrinkable tube (4) for fixing is mounted between the tube (5) connected to the temperature sensing section side. The electric connection with the external amplifier is made by pressing the counter electrode against the exposed contact portion (6) of the thermocouple (1).

However, in such a connector, it is difficult to fix the thermocouple (1) and the contact portion (6), and it is difficult to position the exposed portion of the thermocouple, contact failure due to processing failure, or contact portion (6). There were many problems such as short circuits, and even simple connectors were unreliable.

[Problems to be solved by the device]

The present invention is to solve the problem of such a simple type thermocouple connector, and its purpose is to:
It is to enable simplification of the manufacturing process while maintaining the reliability of the temperature measurement characteristics of the thermocouple.

[Means for Solving the Problems]

That is, the present invention relates to a thermocouple connector including a pair of thermocouples, a sheet material, and an adhesive film, which are insulated from each other, and two wires of the thermocouple are pulled out from the back surface of the sheet material to the front side. After being installed and fixed in a non-contact manner along the surface of the material to form a contact portion that contacts and conducts with the counter electrode of the thermocouple, both sides of the sheet material were covered with the adhesive film except the contact portion. It is a thermocouple connector characterized in that.

Further, the present invention will be described with reference to specific examples.

FIG. 1 is a diagram showing a thermocouple connector according to an embodiment of the present invention. The thermocouple (1) drawn out from the connection tube (5) is attached to the resin sheet material (2) having two holes (7).
Guide the back side of the wire and attach the two wires of the thermocouple (1) to each two
After pulling out through the hole (7) to the front side and then forming the contact portion (6) along the surface of the sheet material (2) with a wire, both surfaces of the sheet material (2) are adhered by the adhesive film (3). To cover. It is desirable that the two holes (7) are located on each side of the sheet (2) as shown in FIG. 1, but they may be arranged on the same side in some cases. The size of the hole (7) is not particularly limited as long as the used thermocouple can pass therethrough.

FIG. 2 is a view showing another embodiment of the present invention, the side view of which is the same as FIG. 1 (b). Here, instead of the holes (7) in FIG. 1, slit-shaped notches (8),
(8 ') is provided at four places. That is, the thermocouple (1)
From the back surface of the sheet material (2), it is led out to the surface of the sheet material through the notch (8), and is fixed at the notch (8 ') on the opposite side through the contact portion (6). The subsequent processing procedure is the same as that of the embodiment shown in FIG.

Next, specific examples of main components used in the present invention will be described below.

As the thermocouple (1), a K or T thermocouple is mainly used, but the thermocouple (1) is not particularly limited thereto. The thermocouple is provided with an insulating means so that the wires do not come into contact with each other and are not short-circuited. As a specific example, the wires are coated with an insulating resin or a tube. An insulating resin coat is desirable from the standpoint of workability. The diameter of the thermocouple wire used may be 0.02 mmφ or more, and a wire diameter of about 0.1 mmφ is particularly suitable for work.

As the sheet material (2), polyvinyl chloride resin, polyethylene, polypropylene and the like can be mainly used, but the sheet material (2) is not particularly limited thereto, and a metal plate whose surface is insulation-coated is also possible. The former is advantageous in terms of cost. The size of the sheet material (2) also needs to be an appropriate size in terms of handling, but is not particularly limited.

The pressure-sensitive adhesive film (3) protects the thermocouple (1) and the like, and one side is coated with a pressure-sensitive adhesive, and it is necessary that the pressure-sensitive adhesive film has appropriate flexibility. For this purpose, a paper or synthetic resin sheet is used. A sheet material obtained by applying a pressure-sensitive adhesive to a synthetic resin sheet is convenient because it can be used and is prevented from getting wet with water.

As the heat shrinkable tube (4), polyvinyl chloride resin,
A so-called heat-shrink type tube such as a silicone rubber tube is used. Also, connection tube (5)
Examples include, but are not limited to, polyvinyl chloride resin and the like.

[Effect of device]

According to the present invention, it is possible to provide a simple thermocouple connector that is inexpensive and has high measurement accuracy, because the problem of workability in the manufacturing process and the low reliability, which are the drawbacks of conventional products, can be solved. is there.

[Brief description of drawings]

1 and 2 are views showing a simplified thermocouple connector according to an embodiment of the present invention, and FIG. 3 is a diagram showing a conventional simplified thermocouple connector, both of which (a) are plan views,
(B) is a side view.

Claims (1)

[Scope of utility model registration request] 1. A thermocouple connector comprising a pair of thermocouples insulated from each other, a sheet material, and an adhesive film, wherein two wires of the thermocouple are pulled out from the back surface of the sheet material to the front surface side. After being installed and fixed in a non-contact manner along the surface of the material to form a contact part that contacts and conducts to the counter electrode of the thermocouple, both sides of the sheet material are covered with the adhesive film except for the contact part. A thermocouple connector characterized by that.