JPS5937952Y2 - air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature regulator, and particularly to an improvement for reducing thermal stress applied to a temperature-sensitive reed switch.

In a temperature controller using a conventional temperature-sensitive reed switch, the flat parts of two external connection terminal pieces are arranged in parallel and built into the case, and the temperature-sensitive reed switch is mounted across both connection terminal pieces. Fixed.

At this time, because the external connection terminal piece is fixed inside the case and the temperature-sensitive reed switch is fixed to this external connection terminal piece, and because each member has a different coefficient of thermal expansion, the temperature-sensitive reed switch will heat up due to temperature changes. Adds stress.

Since the thermal expansion coefficient of the case is usually larger than that of the reed switch, when the temperature rises, tension is applied to the temperature-sensitive reed switch, and conversely, when the temperature falls, compressive force is applied to the temperature-sensitive reed switch.

In this way, if repeated thermal stress is applied to a temperature-sensitive reed switch due to temperature changes, the reed switch will become deformed and its life will be shortened, and its characteristics will also change, resulting in a change in its sensitivity value and a change in the operating temperature of the temperature controller. Operation reliability was reduced.

The present invention was devised in view of the above points, and aims to provide a temperature regulator that eliminates the influence of thermal stress on a temperature-sensitive reed switch, maintains a constant value, and operates with high reliability. .

Therefore, the temperature controller according to the present invention has a slit in the external connection terminal piece that allows the temperature-sensitive reed switch mounting fixing part of the external connection terminal piece to be displaced in a direction substantially perpendicular to the plane part of the external connection terminal piece. It is formed near the fixed part where the temperature-sensitive reed switch is mounted on the connection terminal piece.

FIG. 1 shows an embodiment of a temperature regulator according to the present invention.

1 is a case, 2 is an external connection terminal piece, 3 is a temperature-sensitive reed switch, 4 is a bias magnet, 5 is a reed switch contact, and 6 is a slit.

Two external connection terminal pieces 2 are fixed in the case 1 so that their plane parts are substantially parallel to each other.

These external connection terminal pieces 2 are formed with V-grooves 2a, and by mounting and fixing the lead terminals 3a at each end of the temperature-sensitive reed switch 3 on these grooves 2a, the temperature-sensitive reed switch 3 can be circularly shaped. It is arranged across the external connection terminal piece 2.

A bias magnet 4 for changing the operating temperature of the temperature-sensitive reed switch 3 is installed inside the case 1.

This bias magnet 4 is rotatable, and by adjusting the rotation angle with a lever (not shown), the amount of bias applied to the temperature-sensitive reed switch 3 is adjusted, and its impression value is adjusted.

A slit 6 is formed along the groove 2a of the external connection terminal piece 2 at a distance equal to the thickness of the external connection terminal piece 2.

Therefore, in this external connection terminal piece 2, the bottom of the V-groove 2a, which is the mounting and fixing part of the temperature-sensitive reed switch 3, is oriented perpendicularly to the flat surface of this external connection terminal piece 2, with the shoulder 7 in FIG. 2 as a fulcrum. (direction perpendicular to the drawing) ■
It has flexibility due to the groove 2a.

Therefore, if a difference in thermal expansion occurs between the case 1 and the temperature-sensitive reed switch 3 due to temperature changes, that difference is absorbed by the deflection of the V-groove 2a of the external connection terminal piece 2, and the temperature-sensitive reed switch 3 is exposed to heat. No stress is applied.

As explained above, the temperature controller according to the present invention has a simple structure in which a slit is provided along the groove of the external connection terminal piece, which is the mounting and fixing part of the temperature-sensitive reed switch. Thermal stress can be removed, and therefore the impact value can be kept stable, the life span can be extended, and the reliability of operation can be increased.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a temperature regulator according to the present invention, and FIG. 2 is a front view of an external connection terminal piece of the temperature regulator according to the present invention. 2...External connection terminal piece, 3...Temperature-sensitive reed switch, 6...Slit.

Claims (1)

[Scope of utility model registration request] The flat parts of the two external connection terminal pieces are arranged substantially parallel,
In a temperature controller in which a temperature-sensitive reed switch is mounted and fixed over the circular external connection terminal piece, the temperature-sensitive reed switch mounting fixing part of the external connection terminal piece can be bent in a direction perpendicular to the flat part. A temperature regulator characterized in that a slit is formed in the vicinity of the temperature-sensitive reed switch mounting fixing portion of the external connection terminal piece to absorb thermal stress applied to the reed switch due to the deflection.