JPH056720U - Structure of thermocouple connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a structure of a thermocouple connector that does not deteriorate the coupling reliability of the thermocouple wire even when used in a low temperature environment. [Structure] A leaf spring member 8 having a bimetal structure is attached to the socket terminal 3 of the connector socket 4, and the leaf spring member 8 gives a predetermined clamping force to the forked portion 3A.
The leaf spring member 8 has a structure in which a strip-shaped metal thin plate 9 having a large thermal expansion coefficient and a strip-shaped metal thin plate 10 having a small thermal expansion coefficient are welded and overlapped with each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to thermocouple wires of thermocouples used for temperature measurement in a thermal vacuum chamber, etc. The present invention relates to a structure of a thermocouple connector for coupling a cable.

[0002]

[Prior art]

  FIG. 2 shows the structure of a conventional thermocouple connector. Figure 2 (a) shows the same thermocouple connector. 2B is a vertical side view of the same thermocouple connector, and FIG. 2C is a sectional view taken along the line AA of FIG.

[0003]   This thermocouple connector, as shown in Fig. 2 (a), has a pair of left and right flat plates. Connector plug 2 having a lug terminal 1.1, and a pair of bifurcated left and right sockets It comprises a connector socket 4 having terminals 3.3. Each plug of connector plug 2 One of the thermocouple wires 5 is connected to the connector terminal 1.1, and The other thermocouple wire 6 is connected to the socket terminal 3.3.

[0004]   Then, as shown in FIG. 2B, each plug terminal 1.1 of the connector plug 2 is Forked portions 3A. Of each socket terminal 3.3 of the connector socket 4. Plug in 3A Of the thermocouple wire 5 on the connector plug 2 side and the thermocouple wire 6 on the connector socket 4 side. Join both.

[0005]   In such a thermocouple connector, the socket terminal 3 has a forked portion 3A. It is necessary to securely fix the inserted plug terminal 1. For this reason, the conventional A leaf spring member 7 for giving a predetermined holding force to the forked portion 3A is attached to the ket terminal 3. Attached. This leaf spring member 7 is attached to the socket terminal 3 as shown in FIG. It is attached so that it holds the socket terminal 3 between them, and its spring force is It is supposed to be given to A. As a result, the forked portion 3A has a predetermined holding force, and Fix the plug terminal 1 inserted with the holding force so that it will not come off.

[0006]

[Problems to be solved by the device]

  However, like the conventional thermocouple connector described above, a simple leaf spring member 7 is used for socketing. In the case of a structure in which a predetermined clamping force is applied to the forked portion 3A of the terminal 3, the thermal vacuum chuck is used. When the temperature inside the chamber becomes low, the leaf spring member 7 is thermally contracted, so It becomes impossible to give a predetermined gripping force, and therefore, the plug terminal 1 of the forked portion 3A There is a problem that the fixing force for the It was

[0007]   Therefore, the purpose of the present invention is to improve the coupling reliability of the thermocouple wire even when it is used in a low temperature environment. The object of the present invention is to provide a structure of a thermocouple connector that does not deteriorate in performance.

[0008]

[Means for Solving the Problems]

  The present invention provides a connector plug having a flat plug terminal and a bifurcated shape. A connector socket having socket terminals, The front of the connector socket by inserting it into the forked part of the socket Connect both the thermocouple wire on the connector plug side and the thermocouple wire on the connector socket side. It relates to a mating thermocouple connector.

[0009]   In order to achieve the above object, the present invention provides a socket for the connector socket. Leaf spring part of bimetal structure for giving a predetermined clamping force to the forked terminal It is characterized in that a material is provided.

[0010]   Further, in the leaf spring member having the bimetal structure, a metal plate having a large coefficient of thermal expansion is provided inside. The metal plate with a small coefficient of thermal expansion is placed on the outside. It is a feature.

[0011]

【Example】

  An embodiment of the present invention will be described below with reference to the drawings.

[0012]   FIG. 1 shows a thermocouple connector according to the present invention. Figure 1 (a) shows the same thermocouple connector. FIG. 1B is a vertical cross-sectional side view, and FIG. 1B is a sectional view taken along the line BB in FIG. .

[0013]   The basic structure of this thermocouple connector is the same as that of the conventional thermocouple connector described above. It is built. That is, a pair of left and right plug terminals 1.1 in the form of a flat plate (one of which is (Not shown) and a pair of left and right socket terminals in a bifurcated shape Connector socket 4 having 3.3 (one not shown). Connector One of the thermocouple wires 5 is connected to each plug terminal 1.1 of the lug 2, The other thermocouple wire 6 is connected to each socket terminal 3.3 of the socket 4.

[0014]   Then, as shown in FIG. 1A, each plug terminal 1.1 of the connector plug 2 is Forked portions 3A. Of each socket terminal 3.3 of the connector socket 4. Plug in 3A Of the thermocouple wire 5 on the connector plug 2 side and the thermocouple wire 6 on the connector socket 4 side. Join both.

[0015]   In this thermocouple connector, the socket terminal 3 of the connector socket 4 is bypassed. Attach the leaf spring member 8 of metal structure to the leaf spring member 8 of bimetal structure. As a result, a predetermined holding force is applied to the forked portion 3A.

[0016]   As shown in FIG. 1B, the leaf spring member 8 is used for the socket terminal 3 with respect to the socket terminal 3. It is attached so that 3 is sandwiched, and its spring force is applied to the forked part 3A. It has become. As a result, the bifurcated portion 3A has a predetermined holding force, and the holding force is used for insertion. Fix the inserted plug terminal 1.

[0017]   Such a leaf spring member 8 includes two strip-shaped metal thin plates 9 and 10 having different thermal expansion coefficients. It has a welded and superposed structure (bimetal structure). In this case, thermal expansion The strip-shaped metal thin plate 9 having a large coefficient is arranged inside, and the strip-shaped metal thin plate 1 having a small coefficient of thermal expansion 1 0 is placed outside.

[0018]   As described above, the forked portion is attached to the socket terminal 3 of the connector socket 4. The leaf spring member 8 having a bimetal structure that gives a predetermined holding force to the 3A is used in a low temperature environment. When it is placed in, it shrinks by heat and deforms. At this time, two strips of metal that are stacked Since the thin plates 9 and 10 have different coefficients of thermal expansion, the leaf spring member 8 can be formed as shown in FIG. , A force like an arrow (a forked portion) inside the strip-shaped thin metal plate 9 having a large coefficient of thermal expansion is arranged. 3A is applied).

[0019]   Therefore, even if the thermocouple connector is placed in a low temperature environment, The function of fixing the plug terminal 1 by the portion 3A is not impaired, and for this reason, the thermocouple wire is not connected. Combined reliability does not decrease.

[0020]

[Effect of device]

  As described above, the structure of the thermocouple connector of the present invention is the socket of the connector. A bimetal structure leaf spring member is provided on the When a child is placed in a low temperature environment, the child's forked part is given a certain holding force. However, the fixing function of the plug terminal by the forked part is not impaired, and the reliability of the thermocouple wire coupling is low. There is an advantage not to give.

[Brief description of drawings]

FIG. 1 shows a thermocouple connector according to an embodiment of the present invention. FIG. 1A is a vertical side view of the thermocouple connector. FIG. 1B is a sectional view taken along the line BB of FIG.

FIG. 2 shows a conventional thermocouple connector. FIG. 2A is a plan view of the thermocouple connector. FIG. 2B is a vertical sectional side view of the thermocouple connector. 2 (c) is shown in FIG.
It is sectional drawing which follows the AA line of (b).

[Explanation of symbols]

1 plug terminal 2 connector plug 3 socket terminals 3A Bifurcated 4 connector socket 5,6 thermocouple wire 8 Bimetal structure leaf spring member 9 Band-shaped thin metal plate with high coefficient of thermal expansion 10 Band-shaped thin metal plate with low coefficient of thermal expansion

Claims (2)

[Scope of utility model registration request] 1. A connector plug having a flat plug terminal and a connector socket having a bifurcated socket terminal, wherein the plug terminal of the connector plug is provided at the bifurcated portion of the socket terminal of the connector socket. In the connector for thermocouples, by inserting both the thermocouple wire on the connector plug side and the thermocouple wire on the connector socket side by inserting, the socket terminal of the connector socket, a predetermined clamping force on the forked portion. A structure of a thermocouple connector, characterized in that a leaf spring member having a bimetal structure for providing is provided. 2. The leaf spring member of the bimetal structure is characterized in that a metal plate having a large coefficient of thermal expansion is arranged inside and a metal plate having a small coefficient of thermal expansion is arranged outside. The structure of the thermocouple connector according to claim 1.