JPH04116914U - Electric heater lid opening/closing mechanism - Google Patents

Abstract

(57) [Summary] [Structure] A lid 2 is attached to the main body 1 so that it can be opened and closed, and the lid 2 is opened and closed by the power of a motor 12 via a torque limiter 10. 14 was provided on the front of the main body 1. [Effect] You can open and close the lid of an electric heater such as an electric rice cooker just by operating a switch, so you can easily open and close the lid even when your hands are full or when you are installing it in a narrow space. I can do it. A torque limiter also allows manual opening and closing.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to electric heaters such as electric rice cookers, electric pots, and dish dryers. The lid can be opened and closed electrically.

0002

[Conventional technology]

Conventionally, for example, in electric rice cookers, the lid was attached to the main body so that it could be opened and closed, and a locking mechanism was used. to hold the lid closed, and hold down the button to release the locking mechanism. The lid can be opened by pulling it up.

0003 In addition, a spring is provided to bias the lid in the opening direction, and the lock release button can be pressed. Some are designed to open using the force of a spring. In this case, when closing the lid To close the lid, push it down with your hand.

0004

[Problem that the invention attempts to solve]

However, when opening and closing the lid, rotate the lid from the front to the upper back. As a result, operation was troublesome. Opening the lid is easy when a spring is installed. However, when closing the lid, you have to operate it by hand, so I don't think the problem has been solved. I can't say that.

[0005] Particularly when placing the electric rice cooker on a shelf etc., make sure there is sufficient space above the electric rice cooker. In many cases, a resource is not secured. After putting the rice in a bowl, I put it in a small space. You have to close the lid that opens toward the back inside, which can be inconvenient when your hands are full. I feel it a lot.

[0006] Other electric heaters such as electric kettles and dish dryers also have similar defects. Producing stool.

[0007] The present invention was developed in view of these circumstances, and the lid is opened and closed electrically. , provides an electric heater whose lid can be easily opened and closed by simply operating a switch. The purpose is to

[0008]

[Means to solve the problem]

Therefore, the present invention has a lid attached to the main body so that it can be opened and closed, and the torque is generated by the power of the motor. The lid is opened and closed via a limiter, and the drive switch of the motor is It is characterized by a switch provided on the main body.

[0009] Figure 1 shows an electric rice cooker as an example of an electric heater in the present invention. 1 is a main body, and 2 is attached to the main body 1 so that it can be opened and closed by a rotation shaft 3. It is a closed lid. A heating plate 5 with a heater 4 attached to the bottom surface is provided at the bottom inside the main body 1. water and rice are placed in a pot 6 placed on the heating plate 5, and the rice is cooked using the heat of the heater 4. It is supposed to be done.

0010 A bevel gear 7 is attached to the rotating shaft 3, and the bevel gear 7 meshes with the bevel gear 7. The bevel gear 8 is connected to the motor via the rotating shaft 9, the torque limiter 10, and the reducer 11. -12. Then, the power of the motor 12 is reduced by the reducer 11, and the Furthermore, the torque is controlled by the torque limiter 10 and transmitted to the bevel gear 8, which meshes with the torque. The lid 2 is opened and closed by rotating the bevel gear 7.

[0011] 13 and 14 are switches that open and close the motor 12; It is located in an easy-to-operate location such as the front of the machine. In addition, 15 and 16 are for closing the lid 2. This is a detection switch that detects the lid state and the lid open state.

0012 FIG. 2 shows an electric circuit for controlling the motor 12. This is a condenser motor controlled by a dynamic condenser 17. Also 18 is electric It is the source.

[0013] In FIG. 2, 15 and 16 are the detection switches 15 and 16, respectively. NC is a normally closed contact, NO is a normally open contact, and is normally connected to the normally closed contact NC. When each detection switch 15, 16 detects opening/closing of the lid 2, the normally open contact NO. It is designed to connect to.

[0014] Also, 19 and 20 are relays, and 19c and 20c are coils, respectively. However, 19s1, 19s2, 20s1, and 20s2 indicate contact points. Each contact 19s, 20s is normally open and closes when the coils 19c, 20c are energized.

[0015] The motor 12 is a capacitor motor and has two windings 21 and 22. , by connecting the driving capacitor 17 to either winding 21 or 22, Can be rotated forward or reverse.

[0016]

[Effect]

Next, the function of this electric rice cooker will be explained. Figures 1 and 2 show the lid 2 closed. are doing. That is, in FIG. 2, the detection switch 16 that detects the opening of the lid is a normally closed contact. The detection switch 15, which is connected to the NC and detects whether the lid is closed, is connected to the normally open contact NO. has been done.

[0017] When the lid opening switch 13 is operated to open the lid 2, the switch shown in FIG. 13 is closed, the coil 19c of the relay 19 is energized, and the contacts 19s1 and 19s2 are closed. , relay 19 is self-maintained.

[0018] When the contact 19s2 closes, the winding 21 of the motor 12 is energized directly. At the same time, the winding 22 is energized via the drive capacitor 17, and the motor 12 is activated. Rotate in the positive direction. This rotation is decelerated by the reducer 11, and torque limiter 10 is used to reduce the rotation speed. By controlling the torque, the bevel gear 7 is rotated via the bevel gear 8, and the lid 2 is rotated in the opening direction. let

[0019] When the lid 2 starts rotating, the detection by the closed lid detection switch 15 is canceled and the contact is closed. Move to normally closed contact NC.

[0020] When the lid 2 is completely opened, the open lid detection switch 16 detects it and the contact is normally open. Move to contact NO. This cuts off the power to the coil 19c of the relay 19, Contacts 19s1 and 19s2 open. Therefore, the power supply to the windings 21 and 22 is stopped, and the motor The rotation of 12 stops.

[0021] Next, when closing the opened lid 2, the close lid switch 14 is operated. At this time, the The lid detection switch 16 has a normally open contact NO, and the closed lid detection switch 15 has a normally closed contact N. C, so the open lid detection switch 16, the closed lid switch 14, and the closed lid detection switch The coil 20c of the relay 20 is energized via the switch 15. and contact 20s1 , 20s2 are closed, so the relay 20 is self-holding.

[0022] When the contact 20s2 closes, the winding 22 of the motor 12 is energized directly. At the same time, the winding 21 is energized via the drive capacitor 17, and the motor 12 is activated. Rotate in the opposite direction. This rotation is controlled by the reducer 11, torque limiter 10 and bevel gear 8. The bevel gear 7 is rotated to rotate the lid 2 in the lid closing direction.

[0023] When the lid 2 starts rotating, the detection by the lid open detection switch 16 is canceled and the contact is closed. Move to normally closed contact NC.

[0024] When the lid 2 is completely closed, the closed lid detection switch 15 detects this and the contact is normally open. Move to contact NO. This cuts off the power to the coil 20c of the relay 20, Contacts 20s1 and 20s2 open. Therefore, the power supply to the windings 21 and 22 is stopped, and the motor 12 stops rotating and the circuit returns to its initial state.

[0025]

[Effect of the idea]

According to the present invention, by only operating the switches 13 and 14 provided on the main body 1. Lid 2 can be opened and closed, so you can use it when your hands are full or when using the electric heater in a narrow space. You can easily open and close the lid 2 even when it is installed in a location, making it extremely convenient. It's convenient.

[0026] In addition, a torque limiter 10 is interposed between the motor 12 and the opening/closing mechanism of the lid 2. Therefore, if the lid 2 gets caught on something while opening or closing, an excessive load may be applied. It is possible to open and close the lid 2 manually even when there is no power supply and the power is disconnected. It is Noh.

[0027] In the above explanation, we mainly explained electric rice cookers, but this invention is used as a lid opening/closing mechanism for electric pots, dish dryers, and other various electric heaters. It can also be adopted.

[Brief explanation of drawings]

[Figure 1] Central longitudinal sectional view of the electric rice cooker of the present invention

[Figure 2] Electric circuit for opening and closing the lid in the present invention

[Explanation of symbols]

1...Body 2... Lid 10...Torque limiter 12...Motor 13, 14... Open/close switch

Claims (1)

[Scope of utility model registration request] 1. A lid (2) is attached to the main body (1) so as to be openable and closable, and the lid (2) is opened and closed by the power of a motor (12) via a torque limiter (10). 12) drive switch (13,1
A lid opening/closing mechanism for an electric heater, characterized in that 4) is provided in the main body (1).