JPS6323912Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a load detection device for an induction heating cooker.

Conventional structure and its problems Conventionally, a load detection device for an induction heating cooker has a movable body equipped with a magnet that is attached to a top plate on which a load such as a magnetic pot is placed, and which is attracted to the magnetic pot and rises. , and a switch for controlling energization to the heating coil by raising and lowering the movable body. However, when a magnetic pot, such as a frying pan used for cooking, is moved on the top plate, the movable body frequently rotates accordingly.

When the movable body rotates frequently, a large amount of static electricity is generated in that area, which makes it easy for dust to adhere to the movable body, hindering the proper operation of the detection device, and also makes it easy for static electricity to be applied to control components inside the cooking appliance body, causing the control components to malfunction.

Purpose of the invention The purpose of the invention is to reduce the amount of static electricity generated in a movable body and to reduce the negative effects of static electricity.

Structure of the Invention In order to achieve the above object, the load detection device for an induction heating cooker of the present invention is made by blocking the rotation of a movable body equipped with a magnet with a blocking body,
As a result, even if the magnetic pot is moved on the top plate, the movable body does not rotate frequently, thereby reducing the generation of static electricity between the movable body part and the surrounding support, and preventing static electricity from cooking. It is possible to reduce the negative impact on

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 4, 1 is a top plate, 2 is a magnetic pot such as a frying pan placed on the top plate 1 and serves as a load, 3 is a heating coil installed below the top plate 1, and 3 is a heating coil placed on the base plate 1. is maintained. 5 is a movable body provided below the top plate 1 at approximately the center of the heating coil 3 so as to be able to move up and down, and has a circular magnet 5a on the top;
A rectangular lever 5b projects downward from the center of the bottom surface. Reference numeral 6 denotes a holder provided at the center of the base plate 4, which has approximately the same shape as the magnet 5a and has a seat 6a for receiving the magnet 5a when the movable body 5 is lowered. Reference numeral 7 denotes a blocking body connected downward from the center of the holder 6a, which has a rectangular hole similar to the lever 5b, and the lever 5b moves up and down within this blocking body 7. Reference numeral 8 denotes a micro switch for controlling the energization of the heating coil 3, which is provided opposite to the lower end of the lever 5b, and is opened and closed by the vertical movement of the lever 5b.
Reference numeral 9 denotes a holding piece for the microswitch 8 which is connected below the blocking body 7.

In the above configuration, when the magnetic pot 2 is placed on the top plate 1 as shown in FIG.
is attracted by the magnetic pot 2 and rises. As a result, the lower end of the lever 5b is separated from the micro switch 8, so that the heating coil 3 is energized, and the magnetic pot 2 is heated by the lines of magnetic force emitted from the heating coil 3. During this heating, even if the magnetic pot 2 is moved on the top plate 1, for example when cooking raw food, the movable body 5 does not rotate frequently. That is, the lever 5b of the movable body 5 has a rectangular shape, and since this lever 5b is located within the rectangular blocking body 7, even if it attempts to rotate as shown by the broken line in FIG. Since it comes into contact with the wall, rotation is prevented.

After the cooking, when the magnetic pot 2 is removed from the top plate 1 as shown in FIG. The power supply to 3 is cut off.

In this manner, according to the embodiment described above, since the rotation of the movable body 5 is prevented by the blocking body 7, static electricity is less likely to be generated between the movable body 5 and the holder 6. Therefore, there is less dust adhering to the movable body 5.
vertical movement can be performed smoothly and load detection can be performed accurately. In addition, the negative effect of static electricity on control parts and the like is reduced.

In addition, in the above embodiment, the movable body 5 is the magnet 5
a and lever 5b, but the fifth
As shown in FIG. 6, it may be made of only a magnet 5a. 5 and 6, a holder 6 is formed in the center of the base plate 4, and a through hole is formed in the seat 6a for receiving the magnet 5a.
The microswitch 8 is attached to the lower surface of the seat 6a, and its actuator faces into the holder 6 through the through hole. A vertical groove 7a is formed in the magnet 5a, and a protrusion (blocking body) 7b that protrudes into the groove 7a is formed on the inner peripheral wall of the holder 6, and the rotation of the magnet 5a is prevented by the groove 7a and the protrusion 7b. is prevented, and the generation of static electricity is reduced as in the above embodiment.

In each of the above embodiments, the micro switch 8 is used, but various switches such as a reed switch or a switch using a Hall element may be used.

Effects of the invention As is clear from the above explanation, according to the present invention, even when the magnetic pot is moved on the top plate, the movable body does not rotate frequently, which reduces the generation of static electricity in the movable body. , the movable body can be moved up and down smoothly, and the negative effects of static electricity on control parts can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a load detection device for an induction heating cooker in use, showing one embodiment of the present invention;
The figure is a cross-sectional view of the load detection device when it is not in use.
Fig. 3 is a rear perspective view of the same load detection device, Fig. 4 is a sectional view taken along line A-A' in Fig. 3, and Fig. 5 is a load detection of an induction heating cooker showing another embodiment of the present invention. A sectional view of the device, FIG. 6 is a sectional view taken along line B-B' in FIG. 1...Top plate, 2...Magnetic pot (load),
3...Heating coil, 5...Movable body, 5a...Magnet, 7...Blocker, 7b...Protrusion (blocker), 8
...Micro switch.

Claims (1)

[Scope of utility model registration request] A top plate on which a load such as a magnetic pot is placed,
A movable body that has a magnet below the top plate that is attracted by the load and rises, a support that moves this movable body up and down on its inner periphery, and a heating coil that is moved up and down by the vertical movement of this movable body. A load detection device for an induction heating cooker, comprising: a switch for controlling energization of the movable body;