JPS60180023A - Power source switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a power switch used in an electric cooking device such as a toaster oven.

Conventional structure and its problems Conventionally, when toasting is performed in a toaster oven, etc., especially when toasting is performed continuously, heat is absorbed by the toaster oven casing the first time.
Since the toast roasting time is set long and the toaster oven housing is heated from the second time onward, it is necessary to keep the toast browning constant by setting the toast roasting time short. Therefore, methods using electronic circuits and the like have been considered that allow the roasting time to be adjusted depending on the heating state of the housing. That is, as shown in Fig. 1, the power switch in this case has a spring 1 in the return direction.
a lifting operation section 2 biased by the lifting operation section 2; a locking piece 3 that locks the lifting operation section 2; a contact section 4 that turns on the power when the locking piece 3 is locked to the lifting operation section 2; an electromagnet 6 that releases the locking piece 3 after a predetermined period of time has elapsed, returns the lifting/lowering operation section 2 to its original position, and sets the contact section 4 to 0FFl to complete roasting; A device equipped with a circuit section 6 for driving was required. However, in this configuration, each of the component parts is individually attached, and the lead wire L1. L2. Since these are connected using L3 or the like, the assembly work is complicated and the cost is relatively high. In addition, when the lift operation section 2 is rotatably supported by a shaft, a through hole is provided in the mounting member (not shown) to which the lift operation section 2 is attached, and a shaft is passed through the through hole. Because the shaft is rotatably supported and a means is also provided to prevent the shaft from being pulled out, the structure is complicated, and as a result, it is extremely unreasonable in terms of assembly work and cost. Ta.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and simplifies the work when assembling each of the component parts that control the switch function, and also simplifies the installation of the operation part in each of the component parts. The purpose is to make it possible.

Structure of the Invention In order to achieve the above object, the present invention includes an operating section, a contact section that turns ON and OFF in relation to the operating section, an electromagnet, and a circuit section that drives the electromagnet. A shaft support comprising: a printed circuit board to be attached to the operating section; and a permanent magnet provided on the operating section and having a correlation with the electromagnet; A spring is provided between the operating section and the printed circuit board to bias the shaft section and the shaft support section toward each other. This makes it possible to simplify the work when assembling each component part, and the operation part can be mounted by connecting the shaft part of the operation part to a shaft formed by a cutout part in the printed circuit board. This is done by providing a spring that is fitted into the support part and biased in the direction that the shaft part and the shaft support part attract each other between the operation part and the printed circuit board. Compared to the one where the shaft is passed through the through hole and there is a means to prevent the shaft from being pulled out,
Since the operation part can be installed very easily with a simple operation and the number of parts is kept to a minimum, it is possible to achieve a reasonable cost.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 2 and 3, a shaft portion 14 of an operating portion 13 is fitted and supported by a print 11. As shown in FIG. 15... is a spring installed between the printed circuit board 11 and the operating section 13, and this spring 16 is biased in a direction in which the shaft section 14 and the shaft support section 12 are attracted to each other. . The operating portion 13 is provided with a magnetic pole plate 16, a permanent magnet 17, and a contact operating projection 18. The printed circuit board 11 has a fixed portion 22 of a movable piece 21 that brings the movable contact 19 into contact with the fixed contact 2o by the action of the contact operating projection 18, and a fixed piece 23 having the fixed contact 20. The contact portion S is placed and attached. Furthermore, this printed circuit board 11 includes an electromagnet 26 that has an iron core 24 and has a correlation with the permanent magnet 16, a circuit section 26 that drives this electromagnet 26, and a part of this circuit section 26. A variable resistor 28 having a knob 27 that can vary the toast roasting time and change the toast browning color is mounted and attached.

The operation in the above configuration will be explained. First, as shown in FIG. 2, when the operating section 13 is operated to suppress the spring force of the spring 16, the permanent magnet 1 approaches the electromagnet 250 and the iron core 24, and due to the action of the permanent magnet 17, the magnetic pole plate 16 and the iron core 2
4 are held by suction. At this time, the contact operating projection 18 pushes up the movable piece 21 against the spring force of the movable piece 21, so that the movable contact 19 comes into contact with the fixed contact 20, turning the contact portion S into an ON state.

Next, after a predetermined period of time has elapsed, as shown in Figure 3,
Due to the action of the circuit section 26, the electromagnet 26 is connected to the iron core 2 of the permanent magnet 17.
In order to generate magnetic force in a direction that offsets the adsorption effect on 4,
The action of the spring 160 is also phase 1, which is the magnetic pole plate 16 and the iron core 24.
are separated and the contact S is turned off.

Effects of the Invention As described above, according to the present invention, each of the component parts controlling the switch function, that is, the operating section, the contact section, the electromagnet,
Since the circuit section is mounted on the printed circuit board,
It is possible to simplify the work when assembling each component part. This is done by providing a spring between the operating section and the printed circuit board that biases the 1ffl+ section and the shaft support section in the direction in which they attract each other. Compared to the case where a shaft is passed through the shaft and a means is provided to prevent the shaft from being pulled out, the operation of the operating section is simple and easy, and the number of parts is kept to a minimum. This makes it possible to obtain a reasonable product in terms of cost.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional power switch, FIGS. 2 and 3 are side views of a power switch in an embodiment of the present invention, and FIG. 2 shows the power switch in the ON state.
FIG. 3 shows the state of the power switch FF. 11... Printed circuit board, 12... Shaft support part, 13
...Operation section, 14・Shaft section, 15・Spring, 17
・Permanent magnet, S ・Contact part, 25...Electromagnet, 26
・ ・Circuit section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 5

Claims (1)

[Claims] An operating section, a contact section that turns on and off in connection with the operating section, an electromagnet, a circuit section that drives the electromagnet, a printed circuit board on which these are mounted and attached, and a printed circuit board that is provided on the operating section, and a permanent magnet having a correlation with the electromagnet, a shaft portion provided on the operating portion is fitted into a shaft support portion formed of a notch portion provided on the printed circuit board, and the operating portion and the printed circuit board are connected to each other; A power switch comprising a spring provided between the shaft portion and the shaft support portion to urge the shaft portion and the shaft support portion toward each other.