JPS5855613B2 - density range - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables a desired cooking time to be obtained by simply selecting and pressing a button categorized by cooking item, cooking time, etc., streamlining and simplifying the operation, and providing high commercial value. The purpose is to provide microwave ovens.

A conventional microwave oven is a microwave oven equipped with a timer that allows a desired time limit to be set by rotating a knob, as shown in FIG.

That is, a knob 2 for setting a time limit and a time scale 3 corresponding to the rotation of the knob 2 are engraved on the panel 1.

Inside the panel 1, a timer and its drive source are installed (not shown), which are connected to the pot 1 and 2, and 4 is a push button switch (COOK button) for starting cooking, which is used to energize the drive source. It is a switch, and when the knob 2 is pressed at a position other than the "OFF" position, electricity is turned on and cooking starts at the same time.

Note that the knob 2 moves counterclockwise (1
-OFF J direction).

When the knob 2 reaches the "OFF" position, the power to the drive source is cut off and the knob 20 stops rotating.

In other words, cooking is stopped. The lamp 5 is turned on while the drive source is energized (during cooking).

To use this microwave oven, press knob 2 at the desired time.
When the button is set to the time scale 3 and the push button switch 4 is pressed, cooking of the food is started.

At that time, the lamp 5 lights up.

The timer operates, and the clock 1 is "OFF" on the time scale 3.
When the position is reached, the power to the drive source is cut off and the lamp 5 goes out.
Cooking will be completed at the same time.

As described above, in the conventional microwave oven, when repeatedly cooking the same type of food, the user has to repeatedly turn the knob to set the desired time period and press the push button switch 4, which is complicated.

The present invention aims to solve these problems, and one embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 3 to 5, 100 is a push button device, and FIG. 2 shows an example of its implementation.
No. 524) By pushing the push button attached to the machine frame,
This is a push button device in which a rolling frame is rotated to a predetermined position by a regulation plate attached to the push button.

Specifically, numeral 19 denotes an active restraining piece to which a fan-shaped regulation plate 20 is pivotally mounted, and a push button piece 21 is fixed to the tip of the active restraining piece 19.
The push button 22 is slidably provided, and the center part of the active deterrent piece 19 is fixed to a U-shaped bracket 23.
The bracket 23 has a restraining piece 24 and three hand-holding pieces 24'.
is pivoted.

The distal end portion of the deterrent piece 24 is curved, and the curved portion 25 is in contact with the deterrent active piece 19 when the push button piece 21 is not inserted between the deterrent active piece 19 and the deterrent piece 24.

The push button piece 21 has an inclined beam surface portion 21' on the side surface,
This inclined beam surface portion 21' has a gentle rising angle, and is designed to spread the restraining piece 24 by press-fitting the inclined beam surface portion 21'.

26 is a spring piece whose rear end is fixed and which clamps and fixes the regulation plate 20 between the active deterrent piece 19; 27 is a transmission rod that supports the horizontal rods 28 and 28'; .

Reference numeral 29 denotes a guide pin that loosely fits into a hole provided in an L-shaped portion 30 integrally formed at the rear end of the bracket 23.
This guides the movement by pressing 3.

The rear end portion of the guide pin 29 is fixed to the rear plate B of the machine frame.

Reference numeral 31 denotes a spring that returns the active restraining piece 19 in the direction of arrow C.

There is a groove 32 in the front plate A of the machine frame that engages with the active restraint piece 19, and a groove 3 in the front plate A on the front of the active restraint piece 19.
2, a hole in an L-shaped portion 30 of the bracket 23 located at the rear E of the active restraining piece 19 is guided by a guide pin 29, so that the active restraining piece 19 can vibrate.

Next, the operation of the push button device will be explained.

Now, the push button 22 is pulled out, the push button 21 is removed from between the restraining active piece 19 and the restraining piece 24, the restraining force of the spring piece 29 is loosened, and the regulation plate 20 is made freely rotatable.

When the push button 22 is pushed in against the spring 31 in this state, the regulating plate 20 first comes into contact with the horizontal rods 28, 28' of the rolling frame 27, which have been adjusted to a predetermined angular position, and then roughly push button 22
If pressed strongly, the inclined beam surface portion 21' of the push button piece 21 pushes the curved portion 25 against the active restraining piece 19 and gets in between the restraining piece 24, and the tip of the spring piece 26 closes the regulating plate 20.
is reliably set to be inhibited by the inhibiting active piece 19 until it is in that state.

Next time, if you press the push button 22, the rolling frame 27 will be at the inclined position 1 of the regulation plate 20, no matter what angle position the rolling frame 27 is at.
The rolling frame 27 can be set at a predetermined position by rotating it.

The push button device 100 in FIG. 3 is formed by installing a large number of the above-mentioned push button devices in parallel, and in FIG. 3, 33 is a mounting plate, 34a, 34b, . Each of the push buttons is composed of the push button 22 shown in FIG. 2, the fan-shaped regulating plate 20, the horizontal rod 28, and the spring 31 are the same as those shown in FIG. Compatible.

This sector gear 37 is fixed to the end of the horizontal rod 28 and engages with a pinion 39 fixed to the end of the rotating shaft 38.

The rotating shaft 38 is supported by the side plate 41b, and the rotating shaft 38
movement in the axial direction, and stabilizes the rotating state of the pinion 39 and sector gear 37.

The rocking plate 40 is formed in a comb tooth shape, and the side plate 41a
, 41b are rotatably mounted.

Thus, the swinging plate 40 is always given a force by the reaction force spring 42 to rotate in the direction of arrow F in FIG.

The reaction force/spring 42 is attached to the rocking plate 40 and the side plate 41a so as to follow the rotation of the rocking plate 40, and the rocking plate 40 moves in the direction of the arrow F by pressing one of the push buttons 34a, 34b... It rotates in the opposite direction to a predetermined position, and when the compression is released, it returns to its original position.

The lever 43 is supported using a part 44a of the motor mounting plate 44 as a fulcrum, and a rotatable roller 45 is attached to the tip end on the push button 34 side, and a swing plate 40 is installed to control the transmission of force by the rotating shaft 38 as described later. When the swing plate 40 rotates in the direction opposite to the F direction by pressing the push button 34, it rotates in the direction of the arrow G in FIG.

At this time, the opposite side of the lever 430 is connected to the groove 5 of the connecting sliding shaft 53.
3', it rotates and swings in the direction of arrow H in Fig. 4.

The connecting sliding shaft 53 is configured to be slidable and rotatable with respect to the bearing 50.

The bearing 50 is fixed to the side plate 41b, and the rotating shaft 38 is rotatably supported on the inner diameter of the bearing 50.

The pressing spring 51 is interposed between the side plate 41b and the lever support plate 52, and presses the connecting sliding shaft 53 through the lever support plate 52, so that a pressing force is applied in the direction opposite to the direction of arrow H in FIG. There is.

Therefore, the push button device 100 has screws 3 on the mounting plate 33.
It is fixed at 5.

The motor mounting plate 44 has screws 46 attached to the mounting plate 33 and the side plate 41b.
, 47, and a motor 48 is installed.

A drive gear 49 is fixed to the motor shaft of the motor 48, and this drive gear 49 engages with the deceleration gear 54.

Further, the gear 54 for deceleration and the gear 49 mesh with each other so that they can slide in the axial direction due to the sliding movement of the connecting sliding shaft 53.

Further, the reduction gear 54 and the connecting sliding shaft 53 are always kept in constant pressure contact with each other by the pressing spring 51 via the spacer 55, 55', thereby forming a constant pressure clutch.

Additionally, a connecting plate 57 with a pawl is fixed to the end of the connecting sliding shaft 53, and is engaged with the crown gear 58 to form a connecting clutch portion.

However, the crown gear 58 is fixed to the rotary shaft 38 by the pin 59, and the lever 43 engages with the pawl connecting plate 57 in the state shown in FIG.

At the end of the rotating shaft 38 opposite to the pinion 39, a bevel gear 60 is fixed to a screw 61 in order to transmit the rotation at a right angle.
It is rotatably mounted with E-type retaining rings 63, 63.

A bevel gear 65 is fixed to the end of the knob shaft 64 with a screw 66, and an E
A knob shaft 64 is rotatably attached to the mold retaining ring 67 and to the mounting plate 33 via a retaining ring 68, respectively.

The knob 2 is fixed to the front end of the knob shaft 64, and a stopper pin 71 is attached to the knob shaft 64 to restrict the rotation angle of the knob shaft 64. Attach the stopper pin 7 to the provided positioning pin 72.
1 are joined at a predetermined rotational position.

The support plate 73 is rotated 20 times to rotate the bevel gears 60, 6.
In order to ensure smooth rotation of the push button 5 and to prevent the rotating shaft 38 from being bent, the push button device 100 and the conductive mounting plate 62 are connected and mounted.

In order to control the on/off operation of the motor 48, a starting switch 75 is fixed to the side plate 41a of the push button device 100 with an insulating plate 74 in between with a mounting screw 76.

The actuator 77 of the starting switch 75 is joined to the tip 40b of the swing plate 40.

A first switch 81 is fixed to the conductive mounting plate 62 with a set screw 82 via an insulating plate 80.

A cam 78 is fixed to the rotating shaft 38 with a screw 79, and operates the switch 81 when the knob 2 is in the "OFF" position.

5 is a cooking indicator lamp, and 4 is a push button switch for starting cooking.

Next, the force transmission relationship in the above structure will be described.

If the rotation shaft 38 is to be rotated by the knob 2, the knob 2
The constant pressure clutch section slips due to the rotational torque of , and the connecting clutch section is configured so as not to slip.

Furthermore, when driving the motor 48 to function as a timer, all clutches are in a connected state.
When one of the push buttons 34a, 34b... is pressed, the lever 43 rotates in the direction of arrow G due to the rotation of the swing plate 400, and the connecting sliding shaft 53 moves in the direction of arrow H. This is so that the connecting clutch section is disconnected.

The operation of the above embodiment will be explained in detail.

1. When using the time limit setting push button, if one of the time limit setting push buttons 34a, 34b, etc. is selected and pressed, the swing plate 40 rotates and the push button 34a is completely pressed.

34b... is fully pressed, the lever 43 rotates in the direction of the arrow G while the roller 45 rotates, and the connecting sliding shaft 53 slides in the direction of the arrow H as shown in FIG.

That is, the engagement between the pawl connecting plate 57 and the crown gear 58 is disengaged, and the connection between the rotating shaft 38 and the connecting sliding shaft 53 is released.

At the same time, the horizontal rod 28 is rotated to the set inclination position of the fan-shaped regulating plate 20 by pressing the push buttons 34a, 34, . . . , and the fan-shaped gear 37 is also rotated at the same time.

As a result, the pinion 39, the rotating shaft 38, the bevel gear 60,
65, the knob shaft 64 and the knob 2 rotate in conjunction with each other.

Completely push the button 34a. 34b..., the regulating plate 20 joins with the horizontal rod 28 at a predetermined position, the rotation of the sector gear 37 is completed, and the knob 2 is set at the position of the set time limit.

At the same time, the activation switch 75 attached to the side plate 41a is activated via the actuator 77 by the rotation of the tip portion 40b of the swing plate 40, but the motor 48 is not energized.

Next, when the push buttons 34a, 34b... return to their original positions due to the elastic force of the spring 31 and the reaction spring 42, the activation switch 7
5 returns to its original state, and at the same time the motor 48 is energized,
Then, cooking begins, and the electric circuit for this operation will be explained in detail later.

When the motor 48 is energized, the drive gear 49 begins to rotate the reduction gear 54, and the push button 34a is pressed.

When 34b... has completely returned to its original position, the lever 43
When the connecting plate 57 and the crown gear 58 are brought back into engagement, the connecting sliding shaft 53 and the rotating shaft 38 are integrated, and the housing 2 starts rotating.

The knob 1 2 rotates and the stopper pin 71 and positioning pin 7
When the two are connected, that is, when the knob 2 is in the OFF position, the cam 78 acts on the switch 81, cutting off the power to the motor 48, stopping rotation, and cooking is completed. At the same time, the indicator lamp 5 is turned on. disappears.

Next, if the timer is set by the knob 2 without using the timer setting push button, the rotary shaft 38 is rotated by the knob 2 via the bevel gears 60 and 65.

At the same time, the pinion 39 and the sector gear 37 rotate in conjunction with each other.

At this time, the connecting plate 57 with pawls and the crown gear 58 are engaged, and due to the movement of the constant pressure clutch section, the reduction gear 54 does not rotate to the point where it meshes with the drive gear 49, and the connecting sliding shaft 5
Only 3 rotates.

However, in this case, when the push button switch 4 for starting cooking is operated, the motor 48 is energized to rotate the reduction gear 54, that is, the rotating shaft 38 via the drive gear 49, thereby functioning as a timer.

Also, when using the push buttons 34a, 34b... by changing the time limit settings, the push buttons 34a, 3 whose time limit settings are to be changed are used.
4b... in the opposite direction to the suppression, and after making the regulating plate 20 rotatable, turn the knob 2 to set the desired time period, thereby rotating the sector gear 37 and the horizontal rod 28 to the predetermined position. dynamic settings.

Then, the push buttons 34a, 34b, . . . are pushed back to their original positions to join the regulating plate 20 to the horizontal rod 28, and the regulating plate 20 is reliably set at the angle determined by the horizontal rod 28.

If you do this next time, press button 34a34b...
By pressing , you can set the desired time limit.

Next, an electric circuit used in the microwave oven of the embodiment will be explained with reference to FIG.

85 is a normally open contact of the starting switch 75, 86 is a normally closed contact thereof, 87 is a normally open contact of the switch 81, 88 is a normally open contact of the cooking start push button switch 4, 89 is a first relay coil 90, 91 is a normally open contact A normally open contact that closes when the relay coil 89 is energized; 92 is a second relay coil that operates a contact for controlling the power of a cooking device such as a magnetron; 5 is a lamp that lights up to indicate when cooking is in progress; 93 is a power source It is.

However, when operating by pressing the push buttons 34a, 34b..., first the push buttons 34a, 34b...
As a result of this operation, the rotating shaft 38 and the knob 2 rotate, the switch 81 operates, and the normally open contact 87 closes.

This normally open contact 87 remains closed until the knob shaft 64 and rotating shaft 38 return to their original positions and the knob 2 is in the OFF position.

At the same time, the start switch 75 operates, and the normally open contact 85
is closed and the normally closed contact 86 is opened.

This energizes the first relay coil 89 and closes the normally open contacts 90 and 91.

Therefore, the first relay coil maintains itself regardless of the state of the normally open contact 85, but on the other hand, the normally closed contact 86 is connected to the motor 48, the second relay coil 92 for cooking, and the indicator lamp 5.
Since it is open, it will not be energized.

After this push button 34a. When the pressure on ... is released, push button 3
4a, 34b... return to their original positions and turn on the start switch 7.
5 returns to its original state.

Therefore, the normally open contact 85 opens and the normally closed contact 86 returns to the closed state, and as a result, the motor 48 begins to rotate, the second relay coil 92 and the indicator lamp 5 are energized, and cooking begins.

The rotation of the motor 48 causes the rotating shaft 38 to rotate, and when the set time has elapsed, the operation of the switch 81 by the cam 7B is released, the normally open contact 87 is opened, and all operations are stopped.

Also, push button 34a. 34b... When setting the cooking time using knob 2 and cooking, first set the cooking time using knob 2.
Rotate and stop at the desired time scale position.

Then, by turning the knob 20 times, the switch 81 is operated and the normally open contact 87 is closed.

Next, when the pushbutton switch 4 is pressed to energize the first relay coil 89, the normally open contacts 90, 91 are closed.

As a result, the first relay coil 89 is energized through its normally open contact 90 and enters a self-holding state.

On the other hand, through the normally open contact 91 of this first relay coil 89, the motor 48, the second relay coil 92, and the indicator lamp 5
is energized and thereafter operates in the same way as when operating the push buttons 34a, 34b, . . . .

By the way, in the above circuit, the push buttons 34a, 34b,
The timer is set to work when the push buttons 34a, 34b, etc. are released, but if the motor 48 and other components are energized at the same time as the push buttons 34a, 34b... are released, the circuit configuration can be simplified. On the other hand, the push button 34a.

34b... are returned to their original positions and the lever 43 engages the pawl-equipped connecting plate 57 of the connecting clutch section with the crown gear 58, since the motor 48 is already rotating, the pawl This is because the attached connecting plate 57 engages with the crown gear while rotating, which causes the engagement to shift, resulting in a drawback that the error in the time setting of the time limit increases.

Nafu-1 For this embodiment, the start switch 75 is push button 3.
4a, 34b... is provided in a position where it is activated by the operation of the swinging plate 40, but this
Any position where the push buttons 34a, 34b, . . .
Similar effects can be obtained even if the switch 5 is provided at a position where it is activated.

Since the present invention is configured as described above, if you want to set the cooking time limit, you can set the cooking time by simply pressing the push button, and cooking will start as soon as the cooking time setting is completed, so operate the push button switch. This eliminates the need for turning a knob for setting a cooking time, thereby providing an efficient microwave oven.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a conventional microwave oven, Fig. 2 is an enlarged perspective view of the main part of a push button of a push-button tuner of a timer used in an embodiment of the present invention, and Fig. 3 is a perspective view of a main part of a push button of a push-button tuner of a timer used in an embodiment of the present invention. A plan view of the timer to be used, FIG. 4 is an enlarged plan view of the main parts showing the state of the constant pressure clutch section and the connecting clutch section when the push button is pressed in FIG. 3, and FIG. FIG. 6 is an enlarged side view of the main part showing the operating state of the start switch due to the rotation of the rocking plate when pressed; FIG. 6 is an enlarged front view showing the surface of the microwave oven operation panel of the embodiment of the present invention;
The figure is an electric circuit diagram of the microwave oven according to the above embodiment.
0 is a push button device, 1 is an operation panel, 2...1, 3...
...Pointer, 4...Push button switch for starting cooking, 5...
Indicator light, 34a, 34b...Push button, 48...Motor 20...Regulation plate, 22...Push button, 37...Sector gear, 38...Rotary shaft, 43...Lever, 39・
... Pinion, 49゛... Drive gear, 54... Reduction gear, 57... Connecting plate with pawl, 58... Crown gear, 81... Switch.

Claims (1)

[Claims] 1. A push button device that rotates a sector gear to a predetermined position by a regulation plate attached to the push button when a push button is pressed; a switch that operates depending on the rotational position of the rotating shaft; a crown gear fixed to the rotating shaft;
A connecting plate with a pawl that selectively meshes with this crown gear,
A deceleration gear connected to the pawl connecting plate to form a constant pressure clutch, a motor that drives the deceleration gear via a drive gear, and an engagement between the pawl gear and the crown gear when the push button is pressed. The position of the rotating shaft is set by the rotation of the sector gear when the push button is pressed, the motor rotates the rotating shaft, and the switch is activated when the rotating shaft reaches the specified position. A microwave oven characterized in that the cooking time is set to the time the motor is rotating and the motor is stopped.