JPH08320127A - Heating and cooking device - Google Patents

Abstract

PURPOSE: To reduce a load applied to an electric motor when a sliding door is opened or closed and perform a smooth sliding motion of the door by a method wherein the door is biased upward through an arm and a resilient member balancing with a load of the door at a location between an upper limit and a lower limit of a sliding position of the door is arranged with tension between the arm and a main body. CONSTITUTION: A disk 15 oscillates one end of an arm 8 and transmits its oscillating force to a door 3 through a wire 5. A coil spring 11 is constructed such that it is shrinked most when an end 8a of the arm 8 facing against the wire is located at the lower limit position and extended most when the end 8a is located at the upper limit position. The arm 8 is constructed such that the arm is always applied with a biasing force directed in a downward direction by the coil spring 11. Then, when the oscillating position of the arm 8 comes to a substantial intermediate position, i.e., the door 3 is kept at its half-opened state, the biasing force in which the coil spring 11 pulls the arm 8 in a downward direction and a downward gravity force applied by its own weight of the door 3 are balanced to each other through the arm 8 and the wire 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker which opens and closes a front opening of a heating chamber with a slide door.

[0002]

2. Description of the Related Art Conventionally, in a heating cooker which has a vertical sliding door and which opens and closes a heating chamber by sliding the door vertically by a motor drive, the weight of the door added to the motor is reduced. So that the sliding of the
There is a structure in which a biasing force such as a spring is applied to the door in a sliding direction. For example, in the heating cooker shown in FIG. 1, guide members 4 for guiding the door 3 up and down are provided on both side walls 2 of the heating chamber 1.
The door 3 is slidably fitted in the. One end of a wire 5 is fixed near the lower end of the door 3, and the wire 5 is rotatably provided above the opening 6 of the heating chamber 1.
The other end of the wire 5 is fixed to the arm 8, and the rotational driving force of the motor 9 is transmitted through the arm 8 so that the door 3 is slid up and down. Then, the arm 8 and the bottom surface 10 of the heating cooker body
A coil spring 11 is stretched between and, and by biasing the arm 8 downward, the door 3 is biased upward, and when the door 3 closes the opening 6, That is, at the lower limit position, the coil spring 11 is in the most expanded state, and when the door 3 opens the opening 6, that is, at the upper limit position, it is in the most contracted state. The force is always formed so as to exceed the gravity of the door 3.

[0003]

However, in the case of such a door, when the door is opened, the weight of the door is reduced by the contracting force of the coil spring, and the load on the motor is reduced, but the door is closed. Sometimes when the door begins to descend, the coil spring is extended, and the motor slides the door against the contracting force of the coil spring.
There was a problem that the load on the motor was very large when the door was closed.

On the other hand, contrary to the above-mentioned prior art, in the heating cooker configured to urge the door downward by the coil spring so that the coil spring is in the most contracted state when the door is at the lower limit position. The load on the motor is reduced by the biasing force of the coil spring when the door is closed, but when the door is opened, the door must be slid against the contraction force of the spring and the gravity of the door. However, this time, there was a problem that the load on the motor increased when the door was opened.

The present invention has been made in view of the above circumstances, and provides a heating cooker in which the load on the motor when the sliding door is opened and closed is reduced and the sliding operation of the door is smooth.

[0006]

According to the present invention, there is provided a main body having a heating chamber for accommodating an object to be cooked, a front opening formed in the heating chamber, and a body mounted on the main body and sliding vertically. A door that opens and closes the opening with a motor installed in the main body, and is provided on the main body, and is pivotally mounted up and down about an intermediate point as a fulcrum, and the door is slid up and down by swinging, A heating cooker including an arm that opens and closes the heating chamber, and a transmission member that engages one end of the arm and the motor so as to be capable of transmitting power and thereby swings the arm. It is stretched between the main body and the door, and is configured to urge the door upward through the arm and to balance the load of the door at an intermediate position between the upper limit and the lower limit of the sliding position of the door. Elastic member And the gills are composed of configuration.

[0007]

According to the present invention having the above structure, since the elastic member configured to balance the weight of the door is provided at the intermediate position between the upper limit and the lower limit of the sliding position of the door, the door is slid. The load on the motor is reduced, and when the door is slid toward the lower limit, the upward biasing force is applied by the biasing means, and when the door is slid toward the upper limit, the door is moved upward. Added weight. As a result, the force applied to the motor becomes the same both when the door is closed and when the door is opened.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. It should be noted that parts having the same functions as the parts of the cooking device described in the related art are designated by the same reference numerals, and the description thereof will be omitted. 2 is a perspective view showing the overall structure of a high-frequency heating cooker showing an embodiment of the present invention, FIG. 3 is a longitudinal sectional view thereof, FIG. 3 shows a door closed state, and FIG. FIG. 5 shows the (half open) state and FIG. 5 shows the opened state of the door.

First, referring to FIG. 2, a high-frequency heating cooker includes a main body 14 having a heating chamber 1 opening forward, a front operation panel 12, a magnetron as a heating source, and the like.
A door 3 which is attached to the main body and opens and closes the heating chamber 1 by sliding it up and down is provided. Next, in FIG. 3, reference numeral 15 is a disk serving as a transmission means, and the door 3
Mainly uses the driving force of the motor 9 and the disk 15.
It is transmitted via the arm 8 and the wire 5. That is, the disk 15 receives a rotational force from the drive shaft of the motor 9 to swing one end of the arm 8, and the swinging force of the arm 8 is transmitted to the door 3 via the wire 5.
Incidentally, 16 is a pin which is erected on the disk 15.

Next, the arm 8 is rotatably supported by a support shaft 17, and has a hook-shaped piece 18 slidably engaged with the pin 16 at one end thereof. It is composed of long pieces and short pieces. The other end of the arm 8 is connected to the wire 5. 19 is a guide plate 2
1, an engaging piece slidably engaged with the arc-shaped slit 20 formed in 1, a coil spring 11 serving as an elastic member stretched between the cooker body bottom surface 10 and the arm 8, 7 a roller of the wire 5, 21 is a high voltage transformer, 13 is a magnetron.

The coil spring 11 is configured to be most contracted when the wire-side end portion 8a of the arm 8 is at the lower limit position and to be most extended when the end portion 8a is at the upper limit position. The coil spring 11 is configured to constantly receive a downward biasing force.

When the swinging position of the arm 8 reaches a substantially intermediate position as shown in FIG. 4, that is, when the door 3 is in the half open state, the coil spring 11 pulls the arm 8 downward. The downward gravity due to the urging force and the own weight of the door 3 is balanced through the arm 8 and the wire 5.

The high frequency heating cooker having the above structure is
When the motor 9 is actuated to rotate the disk 15, the arm 8 rotates through the pin 16 of the disk 15 and the hooked piece 18 engaging with the pin 16 as shown in FIG. , The door 3 can be slid upward through the wires 5, thereby opening the door 3 and completely opening the door 3 as shown in FIG.

At this time, the load applied to the motor 9 is urged upward by the coil spring 11 from the closed state to the half-opened state of the door 3 (FIGS. 3 to 4), The gravity of the door 3 is canceled and the motor 9
Does not impose a load on. Then, from the half open state to the open state (FIGS. 4 to 5) of the door 3, the coil spring 1
The upward biasing force of the door 3 caused by 1 is reduced in proportion to the moving distance, so that the gravity of the door 3 is applied to the motor 9.

Next, the case where the door is changed from the open state to the closed state will be described. In this case, the motor 9 is operated so that the disk 15 rotates in the reverse direction, whereby the door 3 is slid downward through the arm 8 and the wire 5, and the opening 6 is closed.

At this time, from the open state of the door 3 to the half-open state (FIGS. 5 to 4), the gravity due to the weight of the door 3 prevails against the upward biasing force of the coil spring 11 to the door 3. Therefore, no load is applied to the motor 11. From the half open state to the closed state (FIGS. 4 to 3), the upward biasing force of the coil spring 11 against the gravity of the door 3 is applied to the motor 9 as a load.

As described above, according to the present invention, the load is applied to the motor only during the half stroke of each stroke during the door opening stroke and the closing stroke, and the load amount is the same as in the conventional cooking. Compared to the one that applies the urging force only for one stroke like a vessel, it will be less necessary.

[0018]

According to the present invention, since the elastic member configured to balance the weight of the door is provided at the intermediate position between the upper limit and the lower limit of the sliding position of the door, the intermediate position of the sliding position of the door is provided. When it slides in the lower limit direction, the upward biasing force of the biasing means is applied, and when it slides in the upper limit direction, the weight of the door is added. As a result, the force applied to the motor is the same both when the door is closed and when the door is open, and the load on the motor when sliding the door is reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a conventional heating cooker.

FIG. 2 is a perspective view of the heating cooker according to the present invention.

FIG. 3 is an internal configuration diagram illustrating a closed state of the door of the present invention.

FIG. 4 is an internal configuration diagram illustrating a half-opened state of the door of the present invention.

FIG. 5 is an internal configuration diagram illustrating an open state of the door of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating chamber 3 Door 6 Opening 8 Arm 9 Motor 11 Elastic member 14 Main body 15 Transmission member

Claims (1)

[Claims] 1. A main body having a heating chamber for accommodating an object to be cooked, a front opening formed in the heating chamber, and a door mounted on the main body to open and close the opening by sliding in the vertical direction. , A motor installed in the main body, and an arm that is provided in the main body and is pivotally mounted up and down with an intermediate point as a fulcrum so that the door slides up and down by the swing, thereby opening and closing the heating chamber. And a heating cooker including one end of the arm and the motor that are capable of transmitting power to transmit power, and thereby a transmission member that swings the arm, and the heating cooker is stretched between the arm and the main body. While urging the door upward through the arm, an elastic member configured to balance the load of the door at a substantially intermediate position between the upper limit and the lower limit of the sliding position of the door is provided. Characterized cooking vessel.