JPS62120Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a timer in which a switch body that contracts due to environmental conditions is held by the switch body mounting part of the timer part, the means for positioning and holding the switch body provided on the switch body, and the concave-convex fitting means. Regarding the switch body holding structure.

Conventionally, various types of timer switches for outputting electrical signals have been attached.
One type of switch is a switch that is sold as a stand-alone switch, and this switch is added to the purchase to complete a timer switch and generate an electrical signal. However, when this externally sold switch is used, the cost of the stand-alone switch is high, and no matter how much rationalization or VE is performed on other timer parts, the cost cannot be reduced. Therefore, timer manufacturers were able to reduce the overall cost of timer switches by making externally sold switches in-house, and there was a need for switches that matched the shape of the timer. The use of thermosetting resin materials as the material for this switch body is restricted by various domestic and foreign safety standards and electrical regulations, but thermosetting resin materials such as phenolic resin are It has a large shrinkage rate and undergoes considerable dimensional changes depending on the environmental conditions of use, for example, from -10°C to +80°C, and has the disadvantage that the switch body and mounting parts may crack, break, or be unable to be held. In order to solve this problem, annealing is carried out when assembling the timer switch, but there are disadvantages in that the work efficiency is low, such as the operator forgetting to perform the annealing process and the annealing process taking a long time.

In view of the above drawbacks, the purpose of the present invention is to provide means for positioning and holding the switch body on the switch body mounting portion and the switch body, and means for positioning and holding the convex portion in such a manner that contraction of the switch body is allowed. An object of the present invention is to propose a structure for holding a switch body of a timer, which is provided with a concave-convex fitting means that allows displacement in the opposite direction.

The present invention will be explained below with reference to illustrated embodiments. In FIGS. 1 and 2, the timer 1 is built into a case formed by one box-shaped base plate 1a and the other lid-shaped base plate 1c. Switch body attachment portions 1b and 1d are formed on one side of the base plates 1a and 1c, respectively, to project laterally and to which the switch body 2 is attached.

Reference holes 1e and 1f are bored in one side of the switch body mounting portions 1b and 1d, respectively. On the other side of the switch body mounting portions 1b and 1d are long holes 1g and 1.
h is perforated in each case. Above switch body 2
are made of a thermosetting resin material such as phenolic resin, and are provided with reference protrusions 2a, 2a and protrusions 2b, 2b on both sides of the switch body in the longitudinal direction, respectively. The reference protrusions 2a, 2a are fitted and held in the reference holes 1e, 1f of the switch body mounting portion, and the protrusions 2b,
2b are fitted into the elongated holes 1g and 1h of the switch body mounting portion, respectively.

That is, the reference holes 1e, 1f and the reference protrusion 2a,
2a constitutes a means for positioning and holding the switch body, and the elongated holes 1g and 1h and the protrusions 2b and 2b constitute a concave-convex fitting means in which the concave portion allows the convex portion to be displaced in one direction. The above long hole 1g, 1
h is bored in the direction of heat contraction. That is,
The elongated holes 1g, 1h are bored in the direction of the reference holes 1e, 1f.

When the switch body 2 is configured as described above and undergoes thermal contraction, the reference holes 1e, 1f and the reference protrusion 2
Protrusions 2b and 2b are long holes 1g and 1h for a and 2a.
It moves inward and contraction is allowed. That is, the projections 2b, 2b are allowed to shrink by moving in the direction of the reference projections in the elongated holes 1g, 1h by the amount of thermal contraction with reference to the reference projections 2a, 2a.

One set of the protrusions 2b, 2b and the elongated holes 1g, 1h is omitted, and the switch body 2 is held in the switch body mounting portions 1b, 1d by one set of the protrusion 2b and the elongated hole 1g. Good too. In addition, a reference hole and a long hole are provided in the switch body 2, and the switch body mounting portion 1b,
Reference protrusions and protrusions such as extruded protrusions and cut-and-raised pieces may be formed on 1d to fit and hold. Furthermore, the reference hole and the elongated hole may be formed, for example, by half-opened bottomed grooves. Further, the means for holding the reference hole and the reference protrusion may be constituted by screw fixing means having a female screw and a male screw.

Since the present invention is configured as described above, there is no need to perform annealing treatment, the operator will not forget to perform the annealing treatment, and even if the switch body undergoes heat shrinkage, defects that may cause damage will not occur. Therefore, it is possible to provide a timer switch body holding structure which has excellent practical effects such as significantly shortening working time and improving working efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the timer switch body holding structure of the present invention, and FIG. 1 is an external perspective view, and FIG.
The figure is an exploded perspective view. 1...Timer, 1a, 1c...Main plate, 1b,
1d... Switch body mounting portion, 1e, 1f... Reference hole, 1g, 1h... Elongated hole (recess), 2... Switch body, 2a... Reference protrusion, 2b... Protrusion (protrusion).

Claims (1)

[Scope of utility model registration request] In a time switch that integrally includes a switch that emits an electric signal and a timer section that opens and closes the switch at a set time, there is a switch body mounting section that is integrated with the timer section, and the switch body is positioned and held by the mounting section. and a concave-convex fitting means provided on the switch body and the mounting portion, the concave portion allowing the convex portion to be displaced in one direction, and the convex portion is displaced in one direction toward the positioning and holding device. The timer switch body holding structure with the direction.