JPS61107679A - Automatic 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 INDUSTRIAL APPLICATION The present invention relates to an automatic switch device employed in electric cooking appliances such as toaster ovens.

Conventional structure and its problems Conventionally, when toasting is performed in a toaster oven, etc., especially when toasting is performed continuously, the first time the toast is roasted, the heat is absorbed by the open toaster casing. Since the open toaster housing is in a heated state after the second toasting time is set for a long time, it was necessary to set the toasting/roasting time short to keep the toast color constant.

For this purpose, an automatic switch having an electronic circuit that can adjust the roasting time depending on the heating state of the housing has been developed.

However, in this case, as shown in FIG. 1, there is an operating part A as an automatic switch, a locking part B that locks the operating part A, and a contact part C that turns on the power when the locking part B is locked. and an indicator lamp D that blinks in conjunction with the ON/OFF state of this contact C, and an electromagnet E that releases the lock of the front locking portion B after a predetermined period of time and turns off the power to complete roasting. It requires a circuit section F and a variable resistor H, which constitutes a part of this electronic circuit section F and has an operating dimension G that can set the roasting time corresponding to the desired toast color. In addition, each of these devices was configured to be individually attached to a panel or the like. Therefore, it takes a lot of time and effort to install each element, as well as the electromagnet E, the contact section C1, the indicator lamp D, the electronic circuit section F, the variable resistor H, and the wire L1. L2. L3. L4
．． L5. It is necessary to connect wires at L6, L7, etc., and therefore, this configuration is complicated and expensive in terms of cost.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and aims to simplify and automate the work when assembling each component controlling the automatic switch function, thereby making it advantageous in terms of cost. be.

Structure of the Invention In order to achieve the above object, the present invention provides an operating section, a contact section that is turned on and off in relation to the operating section, an electromagnet that is excited when the contact section is turned on or off, and an electromagnet that is excited when the contact section is turned on or off. An indicator lamp that blinks in relation to the on/off state of the contact part, an electronic circuit part for driving the electromagnet, and a variable resistor constituting a part of the electronic circuit part are arranged on a single printed circuit board, respectively. According to this configuration, a series of switches that turn on the display lamp pN to start toast roasting, turn off the display lamp after a predetermined period of time, and complete toast roasting are implemented on a single printed circuit board. Since the components are placed in the same position, the connections between the various components can be easily made by an industrial method called dipping the printed circuit board into a solder bath, and as a result, the Since it can be simplified and automated, it is possible to obtain an automatic switching device that is extremely advantageous in terms of 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, - is a printed circuit board, this printed circuit board 1 is provided with a rotation support part 2, and this rotation support part 2 has a rotation shaft part 4 provided in the operation part 3. Rotatably supported by the action of spring 5 1. :Re,
Further, the operating section 3 is provided with a magnetic pole plate 6, a permanent magnet 7, and a contact section 8. Further, as the contact portion 9, a fixed portion 13 of a movable piece 12 that brings the movable contact 1o into contact with the fixed contact 11 by the action of the contact portion 8 is fixed to the printed circuit board 1, and a fixed piece having the fixed contact 11 is fixed to the printed circuit board 1. 14 is also fixed to the printed circuit board 1. Further, on the printed circuit board 1, there are provided a lamp 15, an electromagnet 17 having an iron core 16, an electronic circuit section 18, and a part of the electronic circuit section 18, and the roasting time is variable. A variable resistor 20 having a knob 19 that allows the baking color to be changed by
are placed respectively.

In the above configuration, when the operating part 3 is operated against the spring force of the spring 5, the permanent magnet 7 approaches the iron core 16 as shown in FIG. It is retained by adsorption.

The contact portion 8 acts on the movable piece 12 against the spring force of the movable piece 12, bringing the movable contact 10 and the fixed contact 11 into contact, turning the contact portion 9 on, and turning on the indicator lamp 16. .

Next, when a predetermined time preset by the variable resistor 20 has elapsed, as shown in FIG. In order to generate this, the magnetic pole plate 6 and the iron core 16 are separated by the action of the spring 6, and the contact portion 9 is turned off, and the indicator lamp 15 is turned off.

Effects of Invention 6 As described above, the automatic switch device of the present invention includes a series of components that control the automatic switch function, that is, an operating section, a contact section,
Since the indicator lamp, electromagnet, electronic circuit section, and variable resistor are arranged and connected on a single printed circuit board, all electrical connections of each component can be made on the printed circuit board. As a result, the oven
It is possible to eliminate the complexity of the work when assembling into the main body of an electric heating cooker such as a star, and achieve a significant reduction in the number of man-hours required for inserting the silk, which is extremely advantageous in terms of cost.

[Brief explanation of drawings]

FIG. 1 is a plan view of a conventional automatic switch device, and FIGS. 2 and 3 are plan views showing ON and OFF states of the automatic switch device in an embodiment of the present invention. 1...Printed circuit board, 3...Pa...operation unit,
9...Contact part, 17...Electromagnet, 18
...Electronic circuit section, 20...Variable resistor. Name of attorney: Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (1)

[Claims] An operating section, a contact section that turns on and off in connection with the operating section, an electromagnet that is excited when the contact section is turned on or off, and an indicator lamp that blinks in connection with the on and off of the contact section. . An automatic switch device in which an electronic circuit unit for driving the electromagnet and a variable resistor forming a part of the electronic circuit unit are respectively arranged and connected on a single printed circuit board.