JPS5817523Y2 - Power connection device for thermal gas rice cooker - Google Patents

Description

[Detailed description of the invention] In a rice-cooking oil pot that cooks rice using a gas rice cooker and then actively heats and keeps the rice warm using an electric heating device,
Ideally, the top and bottom should be separated, and a cord reel should be placed at the bottom of the device.

In order to solve this problem, the present invention provides a cord reel at the bottom of the lower case and devises a power supply connection device to the upper electric heating device. The purpose is to make the power supply connection part separable for convenience of use and to ensure the safety of the power supply connection part in the separated state.

Hereinafter, the structure and effects of the present invention will be explained in detail according to the illustrated embodiments.

The rice-cooking and heat-retaining pot of the embodiment of the present invention has a heat-retaining layer 3 in a main body case 2, an electric heating device 4, and a lid 5 on the side and upper part of the rice-cooking pot 1.
Actively retains heat with the heat insulating layer 6 and electric heating device 7 inside.
Furthermore, the main body case 2 housing the rice cooker 1 can be placed on a lower case 8 equipped with a gas combustion device, and the hinge 1 of the handle 9 provided on the top surface of the lid body 5
It is electrically connected to the electric heating device 7 inside the lid body 5 by a cord 11 near zero.

Further, a cord reel 12 is disposed on the bottom surface of the lower case 8, and the cord reel is electrically connected to the electric heating device 4 and the cord 11 above by a power supply connecting device described later.

The power supply connection device is composed of a pair of movable contacts 13.13 housed in the lower case 8, a pair of sliding contacts 14.14 housed in the lower part of the main body case 2, etc., but here, for convenience, only one of them is shown. The connection mode of the circuit will be explained in detail with reference to FIG.

At the periphery of the lower case 8, near the upper end, a movable contact 13 biased upward by a spring 15 is provided so as to be movable up and down, and its lower end is disposed within the lower case and connected to the cord reel 12. The fixed contact 16 is opposite to the fixed contact 16.

Further, a permanent magnet 17 is disposed near the upper end of the movable contact and is exposed on the upper end surface of the lower case 8.

On the other hand, a sliding contact 14 is arranged at the bottom of the main body case 2,
The contact portion 18 at the upper end is bent and comes into contact with the terminal plate 19,
Furthermore, the contact portion 20 at the lower end faces the upper end of the lower movable contact 13.

Further, an operating rod 21 protruding from the main body case 2 is connected to the sliding contact, and an upward biasing force is applied by a spring 22. Furthermore, the soft ferrite 23 is attached close to the contact portion 20 at the lower end. It is attached to correspond to the permanent magnet 17 below.

Although one circuit of the connection device has been described in detail above, the other circuit is similarly configured, and each pair of the terminal plate 19, sliding contact 14, movable contact 13, etc. are arranged in parallel, and among these, in particular, A pair of sliding contacts 14.14 are connected to the operating rod 21.
It is designed to rise and fall in one piece.

Further, the pair of terminal plates 19 and 19 are connected to the electric heating device 4 and thermostat 24 in the heat insulating layer 3, and further to the electric heating device 7 in the heat insulating layer 6.

To explain the operation of the embodiment of the above structure in more detail, simply connecting the power plug 25 to the power source does not yet electrically connect the electric heating devices 4, 7, etc., but when the operating rod 21 is lowered, the soft ferrite 23 is attracted to the permanent magnet 17, and the pair of sliding contacts 14, 14 are held in a lowered state.

As a result, the pair of contact portions 20.20 at the lower end abut the upper end of the lower movable contact 13.13, and at the same time, the lower end of the movable contact abuts the fixed contact 16.16.

On the other hand, since the contact portion 18.18 at the upper end of the sliding contact 14.14 is always in contact with the terminal plate 19.19, the power source and the electric heating devices 4, 7, etc. are electrically connected by the above operation. .

Next, when the main body case 2 is removed from the lower case 8, the movable contacts 13, 13 are lifted upward by the springs 15, and the lower ends and the fixed contacts 16, 16 are opened.

Therefore, even if the movable contacts 13.13 are exposed on the upper surface of the lower case 8, there is no fear of accidents such as electric shock.

Furthermore, when the main body case 2 is placed on the lower case 8 and the contacts are connected, if these contacts become abnormally heated, the operating temperature of the soft ferrite 23 is set appropriately in advance. The magnetic permeability decreases rapidly, and the biasing force of the spring 22 causes the soft ferrite 23 to separate from the permanent magnet 17, and the sliding contact 14.14 is lifted.

As a result, the electric circuit is cut off and accidents such as electrical leakage due to abnormal overheating of the contact portions are prevented.

As described in detail above, the power supply connection device of the present invention can be used in a thermal gas rice cooker in which the main body case 2 can be separated from the lower case 8, by introducing the power into the lower case 8 and connecting the power cord. A pair of fixed contacts 16.16 provided at the tip correspond to a movable contact 13.13 that can come into contact with and separate from it and is of an automatic return type, and further includes a main body case 2 placed on the lower case 8.
The present invention is characterized in that a pair of contacts connected to the electric heating device 4.7 and the like correspond to the movable contacts, so that it can be used in a heat-retaining gas rice cooker in which the cord reel 12 is arranged in the lower case 8. In this heat-retaining gas rice cooker, only the upper main body case 2 can be carried, and the safety of the electrical connection device to the upper part is ensured when the main body case 2 is removed, making it safe and easy to use. You can get a vessel.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the embodiment of the present invention, and Fig. 2 is a detailed explanatory view of the main parts thereof.
．． 7... Electric heating device, 8... Lower case, 13... Movable contact, 16... Fixed contact.

Claims (1)

[Scope of utility model registration request] In a heat-retaining gas rice cooker that can be separated from the lower case 8 of the main body case 2, a power source is introduced into the lower case 8 and a pair of fixed contacts 16.16 are provided at the tip of the power cord.
and a movable contact 13.13 that can be brought into contact with and separated from it and is of an automatic return type, and furthermore, a pair of contacts that are provided on the main body case 2 placed on the lower case and connected to the electric heating devices 4, 7, etc. A power connection device for a heat-retaining gas rice cooker characterized by being compatible with movable contacts.