JP2002213755A - Heating and cooking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and rigid heating and cooking device with good operability. SOLUTION: A hole part 27 is formed in the outer shell 26 of an operating part 23 and a button 28 made of an elastic material and having a collar 29 in its periphery is fitted thereto. An attaching member 32 surrounding the periphery of a switch 25 is disposed between a printed board 24 and the operating surface of the operating part 23 to hold the collar 29 of the button 28 between the periphery of the hole part 27 on the outer shell 26 of the operating part and the attaching part 32 and fix the printed board 24 to the outer shell 26 of the operating part through the attaching part 32. Thus, the heating and cooking device can be provided in which force applied to the button by an external operation is received by the attaching member and the switch having a large stroke and easily used is compactly arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tabletop / stationary or built-in heating cooker used in a general household kitchen or a commercial kitchen.

[0002]

2. Description of the Related Art Of the conventional heating cookers of this type, a schematic structure of an induction heating cooker, which has been increasing in recent years, will be described as an example. For example, a stationary type cooker is shown in FIG. Like, the cabinet 1 in the kitchen
It is used by being placed on a.

[0003] Reference numeral 2 denotes a main body forming an outer shell of the appliance. A top plate 3 on which a cooked utensil is placed is provided on the top surface, and an induction heating coil 4 is arranged below the top plate 3. Have been. Reference numeral 5 denotes a coil case for housing the induction heating coil 4 and holding it at a predetermined position in the main body 1.

A power supply circuit 6 supplies high-frequency power to the induction heating coil 4. Reference numeral 7 denotes a cooling fan for cooling the induction heating coil 4 and the power supply circuit 6. Reference numeral 8 denotes an operation unit that houses a control circuit including a signal input unit for controlling the operation of the apparatus, such as energization of the induction heating coil 4 by an external operation, and a power supply intermittent unit to a load.

FIG. 5 shows a schematic configuration of the operation unit 8.
On a printed circuit board 10 of the control circuit 9, a signal switch 11 for inputting a control signal of a device is arranged.
Reference numeral 12 denotes a power switch for interrupting the main power supply to the device.
The main power supply is turned on and off by opening and closing the contacts. In general, the power switch 12 has an operation stroke larger than that of the other signal switches 11 so that the user can easily recognize whether the power is turned on or off.

[0006]

However, in the case of a switch having a large stroke, the switch is liable to be subjected to excessive force by a user, and in order to withstand the load, it is necessary to use a switch having a strong exterior. As a result, a power switch is required. As a result, the size of 12 increases, which is against the space saving of the airframe.

[0007] Further, when mounted on the printed circuit board 10 because it is apt to receive an excessive force, an excessive force is applied to the printed circuit board 10 and there is a possibility of breakage.
2 needs to be mounted independently of the control board, which not only hinders space saving, but also requires mounting members, fixing screws, and the like, thus increasing costs.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a heating cooker which is compact, rich in robustness, excellent in operation feeling, and easy to use.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, a cooking device according to the present invention comprises a switch for inputting a control signal of a device or connecting and disconnecting a power supply on a printed circuit board of a control circuit. While arranging, forming a hole in the outer shell of the operation unit, fitting a button having a flange around the material with elasticity, between the printed board and the operation surface of the operation unit A mounting member that surrounds the periphery of the switch is arranged, and the flange of the button is sandwiched between the periphery of the hole of the operation unit and the mounting member. It is fixed to the operation unit.

Thus, the force applied to the button by the external operation is received by the mounting member, and the switch having a large stroke and easy to use can be arranged compactly.

[0011]

According to a first aspect of the present invention, a hole is formed in the outer periphery of the operation portion, a button having a flange portion is fitted around the hole with a material having elasticity, and the printed circuit board is connected to the operation portion. ,
A mounting member surrounding the switch is arranged between the operation unit outer shell and the flange of the button is sandwiched between the operation unit outer shell and the mounting member, and the print is performed via the mounting member. By fixing the board to the operation section outer shell, the force applied to the button by the external operation is sandwiched and received between the mounting member and the operation section outer shell, so that the switch having a large stroke and easy to use can be compactly provided with increased waterproofness. It can be arranged in.

According to a second aspect of the present invention, there is provided a spacer having rigidity interlocking with the behavior of the button by the pressing operation, transmitting the pressing force to the button to the switch via the spacer, and Before reaching the bottom dead center during the stroke of the pressing operation, the spacer and the mounting member are brought into contact with each other to regulate the pushing position of the button, so that excessive force exceeding the operating force required for switch operation is This prevents the switch and the printed circuit board from being damaged.

According to a third aspect of the present invention, the printed circuit board is arranged on the operation section while being inclined with respect to the horizontal plane, and a part of the wall of the mounting member surrounding the switch is cut off on the lower side of the inclination. By eliminating contact between the printed circuit board and the mounting member at that point, even if water enters the inside due to breakage of the button, etc., the water is immediately discharged from around the switch, and the switch configuration Failure due to corrosion of the member can be prevented.

According to a fourth aspect of the present invention, even if water enters due to breakage of a button or the like by covering at least a tip portion of the switch in an assembled state by passing the spacer into a substantially cap shape, the spacer passes through the actuator portion of the switch. Thus, it is possible to prevent intrusion into the switch.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the appearance of an induction heating cooker according to the present invention. Reference numeral 21 denotes a main body, and a top plate 22 on which a cooker to be heated is placed is disposed on a top surface of the main body 21. The configuration related to the induction heating is the same as the conventional one. Reference numeral 23 denotes an operation unit that houses a control circuit having a signal input unit for controlling the operation of the device and a unit for interrupting the power supply to the load.

FIGS. 2 and 3 show a power switch housing inside the operation unit 23. Reference numeral 24 denotes a printed circuit board, on which various electronic components are mounted on the printed circuit board 24 to constitute a control circuit. . By operating the signal input unit mounted on the printed circuit board 24 and the intermittent unit of the power supply to the load, that is, the switches, by external operation, the device can be manually operated.

Reference numeral 25 denotes a power switch, which is mounted on a printed circuit board and the back surface is soldered. The operation unit 23 has a hole 27 formed in an outer shell 26 thereof.
A button 28 made of a material having elasticity, for example, synthetic rubber or the like is provided on the button 7. A flange 29 is formed around the button 28, and the outer periphery of the flange 29 is bent outwardly of the body, and a groove 30 is formed by the button 28 main body and the flange 29. .

Reference numeral 31 denotes a rib formed around the inside of the hole 27 of the operation section 23. The button 28 is arranged in such a state that the groove 30 is fitted into the rib 31 of the operation section 23. Reference numeral 32 denotes a mounting member disposed between the printed circuit board 24 and the outer shell 26 of the operation unit, and a storage unit 33 surrounding the power switch 25.
The upper end 34 of the wall is pressed against the flange 29 of the button 28, and the button 28 is connected to the upper end 3 of the wall.
4 and a rib 31 of the operation unit 23.

Here, a hole 35 is formed in a part of the mounting member 32, and the periphery of the hole 35 is pressed against a boss 36 formed in the operation section 23 and the printed circuit board 24. And is fixed by screws 37. 38 is
A substantially cap-shaped spacer which is arranged inside the button 28 and interlocks with the behavior of the button 28 when pressed, and is made of a rigid material.

The spacer 38 is disposed so as to cover the actuator portion 39 of the power switch 25, and the ceiling portion 40 is formed on the projection 4 formed on the back surface of the pressing operation surface 41 of the button 28.
Confronts 2. The body portion 43 of the spacer 38 is disposed in the storage portion 33 of the mounting member 32, and is moved by being pressed by the projection 24 by the pressing operation of the spacer 38 button 28. The contact of the switch 25 is opened and closed.

Reference numeral 44 denotes a stopper formed in the storage portion 33 of the mounting member 32, and is opposed to the end surface 45 of the body 43 of the spacer 38. The contact timing between the stopper portion 44 and the end surface 45 of the spacer 38 is determined after the spacer 38 is moved by a pressing operation applied to the button 28 and pushes the actuator portion 39, thereby switching the contact point of the power switch 25. And the stroke is set to be before the bottom dead center of the stroke.

FIG. 3 shows a state when the button 28 is pressed. The button 28 is deformed by the pressing operation because it has elasticity, and pushes down the spacer 38.
When the button 28 is continuously pressed, the actuator portion 39 is lowered to a predetermined position by the spacer 38, and the contact of the switch is switched. As the switch is further pushed, the end surface 45 of the spacer 38 comes into contact with the stopper portion 44 just before the bottom dead center of the switch stroke. If the button 28 is pushed further, the stopper portion 4
4 restricts the movement of the spacer 38, so that an excessive force greater than the force required to switch the contacts is not applied to the power switch 25. Therefore button 2
The power switch 25 will not be damaged even if 8 is pressed.

The mounting member 32 is fixed by the screw 37 in a state of being pressed against the boss 36 formed on the operation section 23 and the printed circuit board 24, and is applied from the button 28 via the spacer 38. The force is the mounting member 3
2, the mounting member 32 is held in the vicinity of the receiving screw 37 at the contact surface between the mounting member 32 and the printed circuit board 24, so that the printed circuit board 24 bends or the connection portion (the connection portion between the printed circuit board 24 and the power switch 25). Soldering part etc.)
Can be prevented from being damaged.

With the above configuration, a switch having a relatively large stroke can be mounted on a printed circuit board while maintaining robustness, so that the space and cost of the device can be reduced.

In FIG. 2, the printed circuit board 24 is disposed in the operation section 23 so as to be inclined with respect to the horizontal plane.
In the wall of the (switch) accommodating portion 33 of the mounting member 32, a slit portion 46 having a part cut out is formed on the lower side of the slope, and by this slit portion 46,
Even if the button 28 is damaged and water enters from the button 28, the water is quickly discharged from around the power switch 25, and a failure due to corrosion of the switch component can be prevented.

Further, since the substantially cap-shaped spacer 38 is disposed so as to cover the power switch 25, even if water enters due to breakage of a button or the like, it passes through the actuator of the power switch and enters the switch. Intrusion can be prevented, and reliability can be further improved.

Further, since the wall of the storage portion 33 of the mounting member 32, the button 28 and the printed circuit board 24 surround the entire power switch 25, the cooling fan 7 can be used during cooking.
The air outside the body is sucked in by the induction heating coil 4
When cooling the power supply circuit 6 and discharging the same to the outside, the oily smoke is also sucked in at the same time and even if the smoke enters the inside of the body, the adhesion to the power switch 25 can be almost eliminated. Therefore, a failure due to oil smoke or the like can be prevented.

[0029]

As described above, according to the first to fourth aspects of the present invention, a switch having a relatively large stroke can be mounted on a printed circuit board while maintaining robustness in order to improve the operational feeling. In addition, the space and cost of the device can be reduced.

Further, even if water enters due to breakage of a button or the like, it can be prevented from passing through the switch actuator and entering the inside of the switch, and the reliability can be further improved.

[Brief description of the drawings]

FIG. 1 is an external view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part showing an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a main part showing an embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a conventional example.

FIG. 5 is a partially exploded perspective view of the same.

[Explanation of symbols]

 Reference Signs List 4 induction heating coil 6 power supply circuit 8 operation unit 9 control circuit 10 printed circuit board 12 power switch 13 button 23 operation unit 24 printed circuit board 25 power switch 27 (shell) hole 28 button 29 (button) flange 30 (button) ) Groove 31 Groove 32 Mounting member 33 Housing 44 Stopper 46 Slit

Continuing on the front page (72) Inventor Kazuichi Okada 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Reference) 3K051 AB01 AD32 AD35 AD39 CD42

Claims (4)

[Claims] 1. A main body and a control signal input of a device or
A switch for interrupting power supply, a printed circuit board for arranging and connecting the switch, and an operation unit outer shell for covering the switch and the printed circuit board. A fitting member surrounding the switch is disposed between the printed circuit board and the operating portion outer shell, and a flange of the button is attached to the operating portion outer shell. And a heating cooker that is sandwiched by the mounting member and the printed circuit board is fixed to the outer periphery of the operation unit via the mounting member. 2. A spacer having rigidity, which is interlocked with the behavior of the button by a pressing operation, is disposed inside the button, and the pressing force on the button is transmitted to the switch via the spacer, and The heating cooker according to claim 1, wherein the pressing position of the button is regulated by bringing the spacer into contact with the mounting member before reaching the bottom dead center during the stroke of the pressing operation. 3. The printed circuit board is arranged on the operation unit while being inclined with respect to a horizontal plane, and a part of the wall of the mounting member surrounding the switch is cut off on the lower side of the inclination and the portion is cut off. 2. The cooking device according to claim 1, wherein contact between the printed circuit board and the mounting member is eliminated. 4. The heating cooker according to claim 1, wherein the spacer has a substantially cap shape and covers at least a tip portion of the switch in an assembled state.