JPH10117946A - Switch structure for cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch structure for a cooker which prevents a blade from rotating in the case connected to the power supply again with a drive switch pushed on. SOLUTION: A switch mechanism for a cooker is so constituted that a blade in a cooling cup is driven by turning on of a drive switch 13 provided in a cooker main body 10, the drive switch 13 is kept in its turned-on state and at the same time a release switch 14 provided in the cooker main body 10 turns off the drive switch 13 from its on state to an off state. In this case, the drive switch 13 is covered with a cover 12 provided on the cooker main body 10, the cover 12 in its opened state pressurizes the drive button 16 so as to turn on the drive switch 13, and the drive switch 13 in its on state is turned off in changing its opened state to the closed state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch structure of a cooking machine having a blade such as a mixer or a slicer.

[0002]

2. Description of the Related Art Conventionally, a cooking machine such as a mixer or a slicer is provided with a detachable cooking cup 2 on an upper portion of a cooking machine main body 1 as shown in FIG. There is a device in which a drive button 3A provided at the bottom is pressed to rotate the blade at the bottom of the cooking cup 2, and a stop button 3B is pressed to stop the rotation of the blade. And
If the drive button 3A is accidentally pressed while the lid 2A of the cooking cup 2 is opened, the inner blade suddenly starts to rotate, so the operation button 3A is covered with the cover 4. The cover 4 is extended and contracted from the side of the operation unit 3 by the rod 5 to cover the drive button 3A.

[0003]

However, even with such a switch structure of a cooker provided with the cover 4 of the drive button 3A, the cover 4 can be closed while the drive button 3A is kept pressed, so that the drive button 3A can be closed. If the cover 4 is closed with the 3A pressed, the blade suddenly starts rotating when the plug is inserted into the outlet without noticing that the drive button 3A is on. There's a problem.

The present invention has been made in view of such a problem. In a switch structure of a cooker provided with a cover for a drive switch, the drive switch is changed from an on state to an off state when the cover is closed. It is an object of the present invention to propose a switch structure of a cooking machine to be operated.

[0005]

According to a first aspect of the present invention, a blade in a cooking chamber is driven by turning on a drive switch provided in a cooking device body. It is a switch structure of a cooker that can be maintained in an on state and turns the drive switch from on to off by a release switch provided on the cooker main body. The drive switch is covered by a cover provided on the cooker main body. In addition, the cover allows the drive switch to be turned on when the cover is open, and turns off the drive switch when the cover is changed from the open state to the closed state.

According to a second aspect of the present invention, in the switch structure of the cooking device of the first aspect, when the drive switch is in an on state, the cover is changed from an open state to a closed state by a closing operation of the cover. Release means for turning off the drive switch is provided.

According to a third aspect of the present invention, in the switch structure of the first aspect, the cooker body is turned on when the cover is open, and is closed when the cover is closed. A cover switch that is turned off, wherein the drive switch is provided with a self-holding circuit that holds a conduction state of the drive switch itself, and the cover switch and the self-holding circuit form a logical product. And

[0008]

Next, a switch structure of a cooking machine according to a preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a switch structure of a cooker according to this embodiment. FIGS. 2 and 3 show a mixer to which the switch structure of the cooker of this embodiment is applied. A cooking cup 11 is mounted on the mixer body 10 so as to be freely connected, and the cooking cup 11 has a built-in blade of the mixer. The blade of the mixer of the cooking cup 11 protrudes from the bottom 11A, and the bottom of the cooking cup 11 can be removed from the cup body by loosening the screw. A cover 12 is provided on the operation unit 10A of the mixer body 10 so as to slide open and close.
A release switch 14 is provided. Drive switch 13
Is pushed in to turn on the blade motor, and the release switch 14
When the key is pressed, the drive switch 13 returns upward.

FIG. 1 is a cross-sectional view showing the arrangement of the drive switch 13 and the release switch 14.
Below A, a switch unit 15 of the cooker is provided. The switch unit 15 has a drive button 16 for driving a motor for rotating the blade and a release button 17 for stopping the rotation of the motor. The drive button 16 is provided at the upper end of the drive switch 13. A release button 17 is placed on the upper end. Drive switch 1
3, a control cam plate 18 is provided below the release switch 14. The control cam plate 18 is held by the left and right frames 19 of the switch unit 15 so as to be slidable in the horizontal direction.
The control cam plate 18 is urged rightward by the compression spring 20. On the right side of the control cam plate 18, a sensor unit 21 for detecting that the cover 12 has changed from the open state to the closed state.
Is protruding.

The drive switch 13 and the release switch 14 are vertically movably held by upper and lower frames 22, 23, and are urged upward by compression springs 24, 25, respectively.
The drive switch 13 and the release switch 14 are provided with protruding portions 28 and 29 which come into contact with the cam portions 26 and 27 of the control cam plate 18. The cam portion 26 into which the projection 28 of the drive switch 13 enters has an introduction portion having a tapered surface and a holding portion formed in a rectangular shape so as to go under the introduction portion.
When the drive switch 13 is pushed downward, the projection 28 gets over the introduction section and enters the holding section, and holds the pressed state.
When the release switch 14 is pushed downward, the projection 29 enters the introduction portion formed of a tapered surface, and the control cam plate 18 is released.
To the right to remove the projection 28 of the drive switch 18 from the holding portion of the cam 26. Thereby, the drive switch 13
Is released from the conduction state.

A normally open contact 30 is provided at the lower end of the drive switch 13, as shown in FIG. Normally open contact 30
Is composed of a substrate 31, a fixed contact 30A and a movable contact 30B, and the fixed contact 30A is fixed to the substrate 31.
The movable contact 30B is also partially fixed to the substrate 31,
The movable part faces above the fixed contact. Movable contact 30
B is pressed by the pressing plate 32 attached to the drive switch 13, and is electrically connected to the fixed contact 30A.

The cover 12 has an L-shaped cross section, and a vertical plate portion 33 protrudes inside the body of the cover 12. The vertical plate part 33 is a sensor part 2 of the control cam plate 18.
When the cover 12 is moved from the right side to the left side in FIG. 1, the vertical plate portion 33 comes into contact with the sensor portion 21 of the control cam plate 18 and the control cam plate 18 is moved. By sliding to the left, the drive switch 13 locked on the cam portion 26 is returned upward. Thereby, the movable contact 3
0B and the fixed contact 30A are separated from each other to interrupt the conduction. At the left end of the horizontal portion of the cover 12, a convex portion 12A for lightly holding the cover 12 and the operation portion 10A and a groove 10B into which the convex portion 12A is fitted are formed. As a result, the cover 12 is maintained in a closed state, and even if the cover 12 is opened widely as shown in FIG. 3, the projection 12A of the cover 12 is moved from the operation section 10A to the operation section 10A.
The cover 12 is stopped by abutting against the edge 10C. Even if the drive button 16 is erroneously depressed while the mixer 10 is turned off to close the mixer 10, the drive switch 13 can be closed and closed.
Is turned off and safety is ensured.

As described above, in this embodiment, the blade in the cooking cup 11 is driven by turning on the drive switch 13 provided on the main body 10 of the cooker.
Can be maintained in the on state, and the
The drive switch 13 is turned off from on by a release switch 14 provided at 0. The drive switch 13 is covered by a cover 12 provided on the cooking device main body 10, and when the cover 12 is open. Next, when the drive switch 13 is turned on by pressing the drive button 16 to change from the open state to the closed state, the drive switch 13 in the on state is turned on.
Is turned off. Therefore, even if the cover 12 is closed while the drive switch 13 is kept on, the drive switch 13 is automatically turned off.
The blade does not start rotating suddenly even when the outlet is connected to a power source.

In this embodiment, the release means according to the second aspect of the present invention comprises the sensor part 21 of the control cam plate 18 and the cover 12.
And the vertical plate portion 33. When the cover 12 changes from the open state to the closed state, the control cam plate 18 slides and the drive switch 13 is turned off by the release means including the vertical plate portion 33 and the sensor portion 21. When 12 is closed, the drive switch is automatically turned off.
Thus, there is no possibility that the blade suddenly starts rotating when the outlet of the cooker is turned on again.

FIG. 4 shows a third embodiment of the present invention, and PB1 is a cover 12 shown in FIGS.
, And a release switch corresponding to the release switch 14 in FIG. 2, and PB3 corresponds to the drive switch 13 in FIG. 1. This is a circuit composed of switches. The cover switch is constituted by a normally open contact PB1 which conducts when the cover is opened and shuts off when the cover is closed. The normally open contact P, which is constituted by a contact PB2, is in a non-conductive state when the drive switch 13 is in a normal state and is conductive when the drive switch 13 is pressed.
In addition to the configuration of B3, the drive switch 13 may be provided with a self-holding circuit H. The self-holding circuit H is composed of a relay R and a normally open contact R that becomes conductive when the relay R is excited. By doing so, the cover 12 is opened and P
When B1 is turned on and the drive switch PB3 is pressed, the self-holding circuit H performs self-holding, and the motor M that rotates the blade rotates. Release switch P while motor M is running
When B2 is pressed, the self-holding of the self-holding circuit H is released, and the motor M stops. Further, even if the cover 12 is closed while the motor M is being driven, the cover switch PB1 is turned off,
Self-hold is released. In this circuit, once the power is removed,
The self-hold is released, but the cover 1 can be used without disconnecting the power.
When motor 2 is closed, motor M automatically stops.

[0017]

According to the switch structure of the present invention, the drive switch is covered with the cover, and when the cover is changed from the open state to the closed state, the drive switch is turned on. Since the drive switch is turned off, the drive switch is automatically turned off even if the cover is closed with the drive switch on, so that the blade does not suddenly start rotating even when the outlet of the cooking device is connected to the power supply again.

According to the switch structure of the cooking device of the second aspect of the present invention, when the cover changes from the open state to the closed state, the drive switch is turned off by the release means. The drive switch turns off. Thus, there is no possibility that the blade suddenly starts rotating when the outlet of the cooker is turned on again.

According to the switch structure of the present invention, the cover switch is turned on while the cover is open, and when the drive switch is turned on, the self-holding circuit of the drive switch operates to keep the blade rotating. . When you close the cover,
The blade does not rotate unless the cover switch is turned off, the self-holding of the drive switch self-holding circuit is released, and the cover switch is turned on again.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a switch structure of a cooker according to an embodiment of the present invention, in which a cover is closed and a drive switch is turned off.

FIG. 2 is a plan view of a normally open contact that is turned on and off by the drive switch of FIG. 1;

FIG. 3 is a sectional view showing a state where a cover of FIG. 1 is opened;

FIG. 4 is a circuit diagram showing a third embodiment of the present invention.

FIG. 5 is a perspective view of a mixer that is a cooking machine according to the embodiment of the present invention, with a cover closed.

FIG. 6 is a perspective view of a mixer that is a cooking machine according to the embodiment of the present invention, with a cover opened.

FIG. 7 is a perspective view of a switch structure of a conventional cooking machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cooker main body 11 Cooking cup 12 Cover 13 Drive switch 14 Release switch 18 Control cam plate 21 Sensor part 33 Vertical plate part

Claims (3)

[Claims] 1. A blade in a cooking chamber is driven by turning on a drive switch provided in a cooking machine main body.
It is a switch structure of a cooker that can be maintained in an on state and turns the drive switch from on to off by a release switch provided on the cooker main body. The drive switch is covered by a cover provided on the cooker main body. In addition, the cover enables the drive switch to be turned on when the cover is open, and turns off the drive switch when the cover is changed from the open state to the closed state. Switch structure. 2. The switch structure according to claim 1, wherein when the drive switch is in an on state, the cover is changed from an open state to a closed state, and the drive switch is turned off by a closing operation of the cover. A switch structure for a cooking machine, characterized by comprising means. 3. The switch structure for a cooking machine according to claim 1, wherein said cooking machine body has a cover switch comprising a normally closed contact which is turned on when said cover is open and turned off when said cover is closed. The drive switch is constituted by normally open contacts, and the drive switch is provided with a self-holding circuit which is turned on by conduction of the drive switch.
The switch structure of a cooking machine, wherein the cover switch and the self-holding circuit form a logical product.