JPH0596374U - Door opener - Google Patents

Abstract

(57) [Summary] [Purpose] A magnet is provided on the door and the cooker main body, and the attracting force or repulsive force of this magnet is used to easily maintain and open the door. [Structure] A door 4 for opening and closing a front opening 3 of a heating chamber 2 provided in the cooker main body 1 is provided, and a permanent magnet 9 is provided on the door 4.
The electromagnet 10 is provided at a position facing the permanent magnet 9 of the cooker body 1.
And a switch 1 for switching the polarity of the electromagnet 10
1 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention particularly relates to a door opening / closing device which has a heating chamber in a main body such as a cooker, is provided with a door for opening and closing a front opening of the heating chamber, and performs an opening / closing operation of the door.

[0002]

[Prior Art]

 An example of a cooking device using a conventional door opening / closing device will be described with reference to FIGS. 7 to 9. The conventional cooker main body is provided with a heating chamber 22 for heating food by putting food in the cooker main body 21, a door 24 for opening and closing a front opening 23 of the heating chamber 22, and a display unit adjacent to the door 24. An operation panel 28 having 25, an operation section 26, a door opening button 27 and the like was provided.

The cooker main body 21 is provided with a latch hook 29, and a latch head 30 having a hook-shaped tip portion engaging with the latch hook 29 is provided on the door 24 so as to be movable up and down. A latch spring 31 that constantly pulls the head 30 downward is provided.

The cooker main body 21 is provided with a latch switch 32 which is operated when the latch head 30 is engaged with the latch hook 29, and the latch head 30 is opened by pressing the door opening button 27. A door opening lever 33 that pushes upward against the force of the latch spring 31 is provided.

[0005]

[Problems to be solved by the device]

 The door opening / closing device having the above-described configuration is configured to securely hold the closed state of the door 24 so as not to leak microwaves or heat in the heating chamber to the outside when the door 24 is closed. There is a latch spring 31 that pulls the door downward strongly, and in order to open the door 24, it is necessary to press the door opening button 27 with a force that exceeds the force of the latch spring 31. There was a risk that the cooker body would move, and it was necessary to fix the cooker body.

[0006] Furthermore, a dimensional error of each component such as the latch hook and the latch head causes a gap between the cooker body and the door. Therefore, in order to prevent the gap, adjustment is required at the time of assembling the latch hook and the latch head. There was a problem that it had to be performed and the workability was very poor.

The door opening / closing device of the present invention has been made in view of the above problems, and magnets are provided on the door and the main body of the device, and the attractive force and repulsive force of the magnets are utilized to close the door. It is intended to facilitate holding and opening.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, a door opening / closing device of the present invention has a door for opening / closing a front opening provided in the device body, and a door opening / closing device for opening / closing the door, comprising: a permanent magnet of the device body. Alternatively, an electromagnet or a permanent magnet is provided at a position facing the electromagnet, and a changeover switch for switching the polarity of the electromagnet is provided.

[0009]

[Action]

 The door opening / closing device configured as described above maintains the closed state of the door by utilizing the attractive force of the electromagnet and the permanent magnet when the door is closed, and improves the hermeticity between the door and the device body. Switches the polarity of the electromagnet by the switching means and uses the repulsive force between the electromagnet and the permanent magnet to open and close the door.

[0010]

【Example】

 An embodiment of a cooker using the door opening / closing device of the present invention will be described with reference to FIGS. The cooking device of the present invention is provided with a heating chamber 2 for heating food by putting food in the cooking device main body 1, a door 4 for opening and closing a front opening 3 of the heating chamber 2, and being adjacent to the door 4. An operation panel 8 having a display unit 5, an operation unit 6, a door opening button 7 and the like is provided.

A pair of permanent magnets 9 are provided above and below the end of the door 4, and an electromagnet 10 is provided at a position of the cooker main body 1 facing the permanent magnets 9. The cooker main body 1 is provided with the door opening button. A changeover switch 11 for switching the polarity of the electromagnet 10 operated by the switch 7 is provided, and a latch switch 12 for detecting the open / closed state of the door 4 is provided.

The changeover switch 11 has a movable contact 11 a, a fixed contact 11 b, and a fixed contact 11 c, and is connected to a battery 13 which is a power source of the electromagnet 10. The door 4 is provided with an operating body 14 for turning the latch switch 12 on and off.

The operation of the cooker having the above configuration will be described. First, when the door 4 is in the closed state, the polarity of the electromagnet 10 is movable so that the portion of the permanent magnet 9 facing the N pole is the S pole and the portion facing the S pole is the N pole. The contact point 11a is connected to the fixed contact point 11b to conduct electricity, and the attraction force of the electromagnet 10 and the permanent magnet 9 holds the door 4 in the closed state.

When the door 4 is opened by taking food in and out, etc., when the door open button 7 of the operation panel 8 is pressed, the movable contact 11a of the changeover switch 11 is moved to be connected to the fixed contact 11c, and the electromagnet is connected. Electricity is applied so that the portion of the permanent magnet 9 facing the N pole of the permanent magnet 9 becomes the N pole and the portion of the permanent magnet 9 facing the S pole becomes the S pole, and the door 4 is moved by the repulsive force between the permanent magnet 9 and the electromagnet 10. Open up.

[0015]

[Effect of the device]

 The door opening and closing device of the present invention utilizes the attractive force and the repulsive force of the permanent magnet and the electromagnet to close the door so that there is no gap between the door and the main body unlike the conventional cooker. Compared to a mechanical mechanism that uses mechanical engagement such as a latch mechanism to maintain the locked state, the pressing force for opening the door is almost unnecessary, so it does not hurt the user's finger and , There is no need to fix the body. In addition, since the closed state of the door is maintained by utilizing the attractive force of the magnet, it is not necessary to make adjustments during assembly unlike the one using the latch mechanism, and the workability can be improved.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of a cooker using the door opening / closing device of the present invention.

FIG. 2 is a front view showing the door of the cooking device of the present invention.

FIG. 3 is a sectional view of an essential part showing a closed state of a door of the cooking device according to the present invention.

FIG. 4 is a cross-sectional view of an essential part showing a changeover switch of the cooker door of the present invention in a closed state.

FIG. 5 is a cross-sectional view of an essential part showing an opened state of the door of the cooking device according to the present invention.

FIG. 6 is a cross-sectional view of an essential part showing a changeover switch of the cooker door of the present invention in an open state.

FIG. 7 is an external perspective view showing an example of a cooking device using a conventional door opening / closing device.

FIG. 8 is a partial cross-sectional view showing a closed state of a door of a conventional cooking device.

FIG. 9 is a sectional view of an essential part showing a changeover switch in a closed state of a door of a conventional cooking device.

[Explanation of symbols]

 1 cooker main body 2 heating chamber 3 front opening 4 door 7 door open button 9 permanent magnet 10 electromagnet 11 changeover switch

Claims (1)

[Scope of utility model registration request] 1. A door opening / closing device for opening / closing a front opening provided in a main body of an apparatus, for performing opening / closing operation of the door, wherein a permanent magnet or an electromagnet is provided in the door, and A door opening / closing device characterized in that an electromagnet or a permanent magnet is provided at a position facing the electromagnet, and a changeover switch for switching the polarity of the electromagnet is provided.