JPH08215072A - Cooking device - Google Patents

Abstract

PURPOSE: To arrange supperposedly and to improve operability by pushing out a door by a cam, maintaining that state and vertically moving the door. CONSTITUTION: In a storage part formed on the sidewall of a main body 1, the output shaft 11 of a driving device 10 composed of a geared motor is horizontally stored on an outer wall side, the cam 12 is attached to the output shaft 11 and the peripheral surface of the cam 12 is abutted on the back surface of the door 2. A pin 17 is erected on the side surface of the cam 12 with a prescribed distance from the output shaft 11 and is freely movably inserted inside the moving hole 14 of an arm 13. The arm 13 is arranged opposite to the side surface of the cam 12 in the storage part and its one end is freely vertically swingably and pivotally supported near the lower end of the door 2. A spring hooking hole 16 is opened on the other end of the arm 13 and the moving hole 14 which is long in a longitudinal direction and a second moving hole 15 which is a short oblong hole are opened. Also, a shaft 18 is erected on the sidewall of the storage part, and by inserting and passing the shaft 18 through the second moving hole 15, the arm 13 is freely vertically swingably supported and moved in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooker in which a door that closes an opening of a cooking chamber moves up and down.

[0002]

2. Description of the Related Art FIG. 7 is a schematic perspective view showing an example of a conventional microwave oven. FIG. 7 (a) shows a state in which a door is closed, and FIG. 7 (b) shows that the door is open. It shows the state. A cooking chamber 34 is provided inside the rectangular parallelepiped main body 31, and an opening 39 of the cooking chamber 34 is provided in front of the main body 31. The opening 39 is closed by the door 32. Arms (not shown), for example, are vertically swingably arranged inside both side walls 35, 35 of the main body 31, and the door 32 is supported by both arms so as to be vertically movable.

As shown in FIG. 7 (b), the arm is opened by moving the door 32 upward by manual operation or opening operation of a driving device.
As shown in FIG. 7A, the door 39 is opened, and the door 32 is moved downward by the closing operation of the driving device to close the opening 39. As a result, even if there are many other cookers and the kitchen (user) has a small moving space in the kitchen, even if other cookers are placed in the opening / closing area of the door, the opening / closing of the door will be hindered. Also, the door does not interfere with the movement of the cook.

The upper front of the main body 31 is located slightly behind the front of the side walls 35, 35, and there is a control unit 33 having a start button, a stop button, a heating time setting button, a display and the like. It is provided. Then, as described above, the door 32 is raised to load the object to be heated into the cooking chamber 34 through the opening 39, and then the door 32 is lowered to close the opening 39, and each button provided in the control section is operated. Then, the microwave is introduced into the cooking chamber 34 to heat and cook the object to be heated.

[0005]

However, in the conventional cooker, since the door moves up and down along the front surface of the side wall of the main body, if the cookers are arranged in two layers vertically, the cooker on the upper side is When the door is closed, the lower cooker door abuts the upper cooker door and cannot be further opened. Therefore, when arranging a plurality of cookers, they cannot be arranged in a stack and a large space is required. In addition, the door is located in front of the control unit, and when operating the control unit, the door interferes with the operation of the control unit.

The present invention has been made in view of the above circumstances, and its object is to stack the doors by pushing the doors with a cam and maintaining the state to move the doors up and down. It is to provide a cooker that can be operated and has good operability.

[0007]

A cooker according to a first aspect of the present invention is a cooker in which a door that closes an opening of a cooking chamber is movable up and down. It is characterized in that it is provided with a cam that is rollingly contacted with each other and that has a portion for pushing out the door and a portion for maintaining the pushed state on each circumferential surface, and that rotation of the cam and movement of the door are interlocked. To do.

In the cooker according to the second aspect of the present invention, in the first aspect of the present invention, a curved surface whose radius is longer than the distance from the rotation center of the cam to the opening is provided on the peripheral surface of the cam, and And a plane whose dimension is substantially the same as the distance from the center of rotation to the opening is formed.

In the cooker according to the third aspect of the invention, the cooker has a door that closes the opening of the cooking chamber and is movable up and down. The cooker rolls on both side edges of the back surface of the door.
Cams each having a curved surface whose radius is longer than the distance from the rotation center of the cam to the opening, and a plane whose dimension from the rotation center of the cam is substantially the same as the distance from the rotation center to the opening A driving device for rotationally driving the cam, a support rod pivotally mounted on the side wall of the cooker in a vertically swingable manner, and a support rod for swingably supporting the door in the vertical direction, and fixed to a side surface of the cam. And a pin, which is 2 in the longitudinal direction of the support rod.
One long hole is formed at a distance, and the support shaft is inserted into one long hole and the pin is inserted into the other long hole so as to be movable in the longitudinal direction.

[0010]

In the cooker according to the first aspect of the present invention, the movement of the door that closes the opening of the cooking chamber and the rotation of the cam are interlocked with each other so that the cam can be moved up and down. Roll and push the door forward to keep it pushed out. With this, as the door moves, a gap is formed between the door and the main body of the cooker, and the gap is maintained.

In the cooker of the second invention, the curved surface formed on the circumferential surface of the cam and having a radius longer than the distance from the rotation center of the cam to the opening, and the dimension from the rotation center of the cam are from the rotation center. The door is pushed out by the boundary with the plane that is approximately the same as the distance to the opening. Further, the curved surface described above rolls on the door to maintain the pushed state during the movement of the door. Then, when the door comes into contact with the above-mentioned plane, the opening is closed by the door.

In the cooker of the third invention, when the drive device rotationally drives the cam, the radius formed on the circumferential surface of the cam is longer than the distance from the rotation center of the cam to the opening, and the rotation of the cam. A boundary portion with a plane whose size from the center is approximately the same as the distance from the center of rotation to the opening rolls on the door and pushes the door forward.

When the cam is rotated by the driving device, the pin fixed to the side surface of the cam also rotates. On the other hand, on the side wall of the cooking device, a support rod that supports the door to swing vertically is pivotally mounted so as to swing vertically. The support rod has a long hole in the longitudinal direction, and the pin described above is inserted through the long hole so as to be movable in the longitudinal direction. Therefore, the point at which the support rod is pivotally attached by the rotation of the pin is a fulcrum. It is rocked by the lever principle. That is, the door is pushed out by the cam and moved up and down by the support rod. Then, during the movement of the door, the curved surface rolls on the door, and the state in which the door is pushed out is maintained.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific description will be given below with reference to the drawings showing an embodiment in which the present invention is applied to a microwave oven. FIG. 2 is a perspective view showing a microwave oven according to the present invention, in which 1 is a rectangular parallelepiped main body. A door 2 that moves up and down and back and forth is attached to the front of the main body 1, and a control unit 3 including a start button, a stop button, a heating time setting button, a display and the like is flush with the door 2 above the door 2. It is provided so that

FIG. 3 is a front view showing a state where the door 2 shown in FIG. 2 is opened. A cooking chamber 4 is provided inside the main body 1, and an opening 9 of the cooking chamber 4 is provided on the front surface of the main body 1. Inside the side walls 5 and 5 of the main body 1, there are cavities, and storage parts for storing cams, arms, springs, etc., which will be described later, are formed therein. Further, openings 6 and 7 for projecting the arm and the cam are opened in front of the side walls 5 and 5.

FIG. 1 is a view in which the microwave oven according to the present invention is longitudinally cut at a position outside the left side wall and viewed from the outside.
In the storage portion formed on the side wall of the main body 1, a drive device 10 composed of a geared motor is stored with its output shaft 11 being horizontal to the outer wall side of the main body 1. A cam 12 is attached to the output shaft 11 of the drive unit 10.
Is attached, and the peripheral surface of the cam 12 is in contact with the back surface of the door 2.

On the peripheral surface of the cam 12, there are a plane portion F whose dimension L ₁ from the rotation center of the cam 12 is substantially the same as the distance from the rotation center to the opening 9, and on both sides of the plane portion F. Te, curved portion C ₁ of the dimension L ₂ from the center of rotation of the cam 12 consists of a long radius arc than the distance from the center of rotation to the opening 9,
And C _2, be between two curved portions C _1, C _2, is formed and a convex portion T becomes the dimension L ₂ again the dimension L ₃ gradually becomes longer than the dimension L ₂ from the center of rotation of the cam 12 . These portions are flat portions F, in the direction of the arrow which is the rotation direction of the cam 12.
The curved surface portion C ₂ , the convex portion T, and the curved surface portion C ₁ are formed in this order.

The storage unit has an arm facing the side surface of the cam 12.
13 is arranged, and one end of the arm 13 is pivotally mounted vertically near the lower end of the door 2 so as to be vertically swingable. A spring retaining hole 16 is formed at the other end of the arm 13, and a long moving hole 14 in the longitudinal direction of the arm 13 is formed near the center of the arm 13. A second moving hole 15 which is an elongated hole shorter than the moving hole 14 is formed between the hole 16 and the hole 16. The side wall of the storage part is slightly higher than the output shaft 11,
The shaft 18 is erected at a position spaced a predetermined distance behind the
Insert the shaft 18 into the second moving hole 15 of the arm 13 to
13 is vertically swingably supported by a shaft 18, and
The shaft 18 can move in the second moving hole 15 and move in the longitudinal direction.

On the side surface of the cam 12 described above, the pin 17 has an output shaft.
The pin 17 is erected at a predetermined distance from the pin 11, and the pin 17 is movably inserted into the moving hole 14 of the arm 13. Further, one end of a spring 19 whose tension is balanced with the weight of the door 2 is fixed to the rear of the cam 13 on the bottom surface of the storage part, and the other end of the spring 19 is fitted into a spring retaining hole 16 of the arm 13. It's hanging.
As a result, the arm 13 can be urged by the spring 19 with the shaft 18 as a fulcrum to move the door 2 up and down, and the load on the drive device 10 is reduced.

A roller 21 is provided in the vicinity of the upper end of the opening 9 of the storage portion, and one end of a wire 22 is fixed obliquely above and rearward of the roller 21, and a winding roller 20 for winding the wire 22 is provided. Is provided. The other end of the wire 22 is fixed to the upper end of the side surface of the door 2, and the wire 22 between the door 2 and the winding roller 20 contacts the roller 21 and is guided. The wire 22 is biased by a predetermined winding force from the winding roller 20, whereby the door 2 is always attracted to the cam 12 side. On the other hand, a start switch (not shown) for the drive device 10 is provided on the side surface of the main body 1, and the drive device 10 rotates the cam 12 by a predetermined angle to stop it by operating the start switch. ing.

4 and 5 are explanatory views for sequentially explaining the movement operation of the door. The right side is a front view and the left side is a schematic side cross section thereof. As shown in FIG. 4A, when the door 2 is closed, the door 22 is in contact with the plane portion F of the cam 12 by the action of the wire 22 and the winding roller 20, and the arm 2
13 is directed obliquely downward toward the door 2, and the spring 19 is stretched by being pulled by the arm 13.

When the drive device 10 starts to rotate by the opening operation by the user, the cam 12 rotates in the direction of the arrow as shown in FIG. 4B, and the flat portion F of the cam 12 and the curved surface portion C ₁ are separated from each other. The boundary part rolls on the door 2 and pushes the door 2 forward. At this time, the shaft 18 shifts to the rear end of the second moving hole 15 of the arm 13, and the arm 13 moves forward. On the other hand, as the cam 12 rotates, the pin 17 pushes up the arm 13 while moving to the door 2 side in the moving hole 14 of the arm 13, and the spring 19 tries to contract. Then, the arm 13 pushes up the door 2 by the driving force of the cam 12 and the contracting force of the spring 19. At this time, the wire 22 is pulled out from the winding roller 20 following the pushing amount of the door 2,
An appropriate force is applied to the door 2 by the take-up roller 20 toward the cam 12 side, and the door 2 moves upward without the upper end thereof contacting the control unit 3.

When the cam 12 is further rotated by the rotation of the drive device 10, the arm 17 is further pushed up by the pin 17, and the door 2 is kept pushed out by the curved surface portion C ₁ of the cam 12 while the arm 13 is being pushed out. Be raised. Further, as the door 2 rises, the winding roller 20 moves to the wire 22.
While the door 2 is moving, an appropriate force is constantly applied from the wire 22 to the cam 12 side, and the rear surface of the door 2 rises without coming into contact with the control portion 3.

Then, as shown in FIG. 4C, the drive unit 10
Will rotate and stop so that the cam 12 rotates until the apex of the convex portion T of the cam 12 contacts the lower end of the back surface of the door 2. At this time, the lower end of the door 2 is located at substantially the same position as the upper end of the cooking chamber 4, so that the object to be heated can be smoothly moved in and out of the cooking chamber 4. The circumferential surface of the cam 12 has a curved surface portion C ₁ and a curved surface portion C from the closed state to the opened state.
_The door 2 extends from the boundary between ₁ and the convex T to the apex of the convex T.
And the flat portion F is brought into contact with the door 2 from the apex of the convex portion T to the boundary portion between the curved surface portion C ₂ and the flat portion F until the door 2 changes from the open state to the closed state. There is.

When the user performs a closing operation, the drive unit 10 rotates, and the cam 12 rotates in the arrow direction as shown in FIG. 5 (d).
As the cam 12 rotates, the pin 17 moves in the movement hole 14 formed in the arm 13 in the direction opposite to the door 2 and pushes down the arm 13. The arm 13 pushes down the door 2 and the spring.
191 Extend. At this time, the wire 22 is wound up by the winding roller 20, and the door 2 descends without contacting the control unit 3. Then, as shown in FIG.
Stops the cam 12 until the flat portion F of the cam 12 comes into contact with the back surface of the door 2 again. At this time, the axis 18
Shifts to the front end of the second moving hole 15 of the arm 13, and the arm 13 moves rearward. Further, the door 2 is a winding roller 20 and a wire.
It is attracted to the cooking chamber 4 side by 22 and closes the opening 9 of the cooking chamber 4.

FIG. 6 is a perspective view showing an arrangement example of the microwave oven according to the present invention, in which the microwave ovens shown in FIG. 2 are vertically stacked in two stages. Even with such an arrangement, since the doors 2 and 2 are pushed forward and rise as described above, the door 2 of the lower body 1 can be moved up and down regardless of the state of the upper door 2.

Although the microwave oven has been described in the present embodiment, it goes without saying that the present invention is not limited to this and can be applied to other cooking devices such as a microwave oven.

[0028]

As described in detail above, in the cooker according to the present invention, the door is pushed forward and rises, so that the cookers can be stacked and the space for placing the cookers is reduced. It can be used effectively. Further, since the control part and the door can be made substantially flush with each other, the operability of the control part is improved, and the design allowable range is widened.

[Brief description of drawings]

FIG. 1 is a view in which a microwave oven according to the present invention is longitudinally cut at a position outside a left side wall and is viewed from the outside.

FIG. 2 is a perspective view showing a microwave oven according to the present invention.

FIG. 3 is a front view showing a state where the door shown in FIG. 2 is open.

FIG. 4 is an explanatory diagram for sequentially explaining a movement operation of a door.

FIG. 5 is an explanatory diagram for sequentially explaining a door moving operation.

FIG. 6 is a perspective view showing an arrangement example of a microwave oven according to the present invention.

FIG. 7 is a schematic perspective view showing an example of a conventional microwave oven.

[Explanation of symbols]

 1 Main Body 2 Door 10 Drive Device 12 Cam 13 Arm 14 Moving Hole 17 Pin 19 Spring 20 Winding Roller 22 Wire

Claims (3)

[Claims] 1. A cooker in which a door that closes an opening of a cooking chamber is vertically movable, and a state in which the door is pushed to both peripheral edges of the back surface of the door, and the door is pushed out to the respective peripheral surfaces, and is pushed out. A cooker characterized by comprising a cam formed with a portion for maintaining the above, and the rotation of the cam and the movement of the door are interlocked with each other. 2. A curved surface having a radius larger than a distance from a rotation center of the cam to the opening is formed on a peripheral surface of the cam, and a dimension from a rotation center of the cam is substantially the same as a distance from the rotation center to the opening. The cooker according to claim 1, wherein a flat surface is formed. 3. A cooker in which a door that closes the opening of the cooking chamber is movable up and down, and rolls on both side edges of the back surface of the door, and the radius of each circumferential surface opens from the rotation center of the cam. A curved surface that is longer than the distance from the center of rotation, and a plane that has a dimension from the center of rotation of the cam that is approximately the same as the distance from the center of rotation to the opening; a drive device that rotationally drives the cam; A support rod pivotally mounted on the side wall of the cooker so as to be vertically swingable so as to face the side surface of the cam, and a long hole is formed in the longitudinal direction of the cooker; A cooker comprising: a pin having one end fixed to a side surface of the cam and the other end inserted through the elongated hole so as to be movable in the longitudinal direction.