JPH01300123A - Heating cooker - Google Patents

Abstract

PURPOSE:To secure opening and closing operations and enable a door to be smoothly opened by a construction wherein energized vertical and horizontal sliders are orthogonally provided in a guide member provided with a lock at a part of a frame body of an oven, and an energized fastening claw is slidably added to a part of the vertical slider so that the claw can be engaged with and disengaged from an engaging part of the guide member. CONSTITUTION:A door-opening button 6 pushes one end part 16a of a lever 16, the other end 16b of which pushes a vertical slider 11 upward by an elastic force of a coil spring 12. An upper part 11b of the slider 11 pushes a hook 20a of a hook member 20 upward, and releases a lock part 10 from engagement. Further, the hook member 20 is turned counterclockwise on a pivot 21 by the slider 11. A door 3 is opened, and a fastening claw 24 is engaged with a fastening claw 9c of a guide member 9 by an elastic force of a coil spring 25, so that the hook 20a is securely released without re-engaging with the lock part 10. A part of a horizontal slider 14 pushes the claw 24 by an elastic force of a coil spring 15, whereby the claw 24 is released from the engaging part 9c, and the vertical slider 11 is returned to original position by the elastic force of the coil spring 12.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention relates to a heating cooking device such as a microwave oven, and particularly relates to a door opening/closing device (door locking device) in this heating cooking device. ) regarding.

(Prior Art) This type of heating cooking device that has already been proposed is constructed as shown in FIGS.
-133308).

That is, in Figures 7 to 9, an oven frame 7 forming an oven is integrally provided in a box-shaped case body (cabinet) 1, and an oven frame 7 forming an oven is provided on the front side 1a of the case body 1. is equipped with an operation panel 2. Further, at the opening of the oven of the oven frame 7, a side-opening door 3 having an opening button 6 is provided so as to be openable and closable. A guide member 9 having a hook insertion hole 8 is attached to a part of the front plate 7a of 7. Furthermore, a locking portion 10 is attached to the guide member 9 where the hook insertion hole 8 is located, and this locking portion 10 engages with a hook member 20, which will be described later.

On the other hand, a vertical slider 11 is provided on the guide member 9 so that the vertical slider 11 can be moved upwardly and downwardly by being biased by the elasticity of a coil spring 12. The lower end portion 11a is connected to the guide member 9.
It penetrates to the lower part and comes out, and the above-mentioned vertical slider 1
1 allows the hook 20a of the hook member 20 to be released from the lock portion 10, and also allows a portion of the lock portion 10 to regulate the upper limit of floating. Further, in the middle of the vertical slider 11, an actuating piece 1 is provided.
1c is formed, and this actuating piece 11c is, for example,
Turn on the magnetron.

The safety switch 13 which turns o1'l' is activated.

On the other hand, in the guide member 9 where the lock portion 10 is located, horizontal sliders 14 that are orthogonal to each other with respect to the vertical slider 11 are arranged so that the hook 20a of the hook member 20 is pushed by the elasticity of the coil spring 15. A portion 14a of the horizontal slider 14 is fitted into the groove 9a of the guide member 9. Moreover, the vertical slider 11
A stacking rod 16 in the shape of a bell crank is rotatably attached to the oven crushed body 7 located near the lower end 11a of the oven by means of a support shaft 17, and one end 16 of the stacking rod 16
A through hole 7b is formed in the oven frame 7 near point a so that the door opening button 6 can be inserted therethrough.

On the other hand, a recessed part 18 is formed in a part of the opening/closing door 3 where the through hole 7b is located, and the opening button 6 is held in this recessed part 18 by the elasticity of a coil spring 19. The door button 6 is biased outwardly and is provided in such a way that it does not come out outwardly.
6a is fitted into the through hole 7b so that it can be pushed.

In addition, a hook member 20 is rotatably mounted on a support shaft 21 within the opening/closing door 3 where the hook insertion hole 8 is located, at a height that engages the lock portion 10 when the door is closed. The hook 20g of the hook member 20 is adapted to engage with the hook portion 10 by the elasticity of the coil spring 22.

Therefore, when opening the opening/closing door 3 which is currently closed, in FIGS. 8 and 9, the opening button 6 is pressed by the coil spring 19.
When pressed with a fingertip against the elasticity of the button, the protective push button 6
By pushing one end 16a of the stacking rod 16, the stacking rod 16 rotates to the left around the support shaft 17, so that the other end 16a of the stacking rod 16
b, the vertical slider 11 is pushed up with the help of the elasticity of the coil spring 12. Then, this vertical slider 1
The actuating piece 11c of No. 1 turns the safety switch 13 to art to cut off the power to the magnetron, and on the other hand, the actuating piece 11c of the vertical slider 11
The upper part 11b of the hook member 20 pushes up the hook 20a of the hook member 20 against the elasticity of the coil spring 22, and releases the engagement of the lock part 10. Furthermore, the hook member 20 is moved by the horizontal slider 14 to the support shaft 21. Rotate left around. As a result, the opening/closing door 3 opens relatively laterally.

In addition, when closing the opening/closing door 3 that is open, the above-mentioned opening/closing Jji! 3 by hand, the hook 20a of the hook member 20 engages with the lock portion 10, as shown in FIG.

(Problem to be Solved by the Invention) However, since the door lock device of the heating cooking device described above is provided with the door opening button 6 on the opening/closing door 3 side, when the door is opened, the door opening button 6 cannot be pressed with a fingertip. Because it remains pressed,
As a result, the entire opening/closing door 3 is pushed in the closing direction, and theoretically,
Even if the door opens effectively, there is a possibility that the door may not actually open smoothly.

The present invention has been made in view of the above-mentioned circumstances, and is a door lock device in which a door opening button is provided on the opening/closing door side.
When opening the door, even if the door opening button is held down with your fingertip,
To provide a heating cooking device in which a hook member of an opening/closing door is surely released from a lock part and the door can be opened smoothly.

[Structure of the invention]

(Means for solving the problems and their effects) The present invention includes:
An opening/closing door is provided at the opening of an oven frame that is integral with the case body, a guide member having a lock portion is installed in a part of the oven frame, and a vertical slider and a horizontal slider are respectively urged by the guide member. Sliders are provided perpendicularly to each other, a stack rod is pivotally connected to the oven frame below the vertical slider, and the opening button is pressed to the opening/closing door on the rotation path of the stack rod. In the heating cooking device, the hook member is pivotally attached to the opening/closing door where the lock portion is located so as to be released from the lock portion by both sliders,
A biased locking pawl is attached to a part of the vertical slider so that it can be freely moved to engage and disengage from the engaging portion of the guide member, and when the door is opened, the door opening button is held down. However, the hook member of the opening/closing door is released from the locking part, and the locking claw of the vertical slider is temporarily engaged with the engaging part of the guide member, and the above-mentioned locking is performed in conjunction with the return operation of the door opening button. The claw is opened by a horizontal slider to ensure opening/closing operation and to open the door smoothly.

(Example) Hereinafter, the present invention will be described with reference to an illustrated embodiment.

Note that the present invention includes the same constituent members as those in the above-mentioned specific example.
The same reference numerals will be used for explanation.

In FIGS. 1 to 6, reference numeral 1 denotes a box-shaped case body (cabinet), and an oven frame 7 forming an oven is integrally provided within this case body 1. At the oven opening of the oven frame 7, there is provided a sideways opening door 3 with a built-in operation panel 2, which can be opened and closed freely.
An opening button 6 is attached, and a guide member 9 having a hook insertion hole 8 is attached to a part of the front plate 7a of the oven frame 7 located at one end of the opening/closing door 3. Further, a lock portion 10 is formed in the guide member 9 where the hook insertion hole 8 is located.
is adapted to engage a hook member 20, which will be described later. Furthermore, an angular engaging portion 9C is formed on the guide member 9 on the opposite side of the lock portion 10.

On the other hand, the guide member 9 is provided with a vertical slider 11 which is biased downwardly by the elasticity of a coil spring 12 so as to move upwardly and downwardly. The lower end portion 11a is connected to the guide member 9.
It penetrates to the lower part and comes out, and the above vertical slider 1
The upper part 11b of the guide member 9 is configured to release the hook 20a of the hook member 20 from the lock portion 10, and the lower limit of descent is regulated by the portion 9b of the guide member 9. Further, a notch recess 23 is formed in the upper part 11b of the slider 11, and a piston-shaped engaging pawl 24 is biased by the elasticity of a coil spring 25 and pulled out in this notch recess 23. It is fitted in such a way that it does not move, and is attached so as to be freely movable so as to be engaged with and disengaged from the engaging portion 9C.

On the other hand, in the guide member 9 where the lock portion 10 and the engaging portion 9c are located, horizontal sliders 14 that are perpendicular to each other with respect to the vertical slider 11 are attached to the hook 20a of the hook member 20 by the elasticity of the coil spring 15. The locking pawl 24 is biased so as to be pushed outward, and is provided so as to be movable in the horizontal direction. Groove 9a
is mated to. Further, a T-shaped stacking rod 16 is rotatably attached to the oven frame 7 located near the lower end 11a of the vertical slider 11 by a support shaft 17. A through hole (see FIG. 8) is formed in the oven frame 7 near one end 16a so that the door opening button 6 can be inserted therethrough.

On the other hand, a recessed part 18 is formed in a part of the opening/closing door 3 where the through hole is located, and this recessed part 18 has the following features:
The opening button 6 is urged outward by the elasticity of the coil spring 19, and is provided in such a way that it cannot be opened outwardly. is fitted into the through hole so that it can be pushed. Further, in the opening/closing door 3 where the hook insertion hole 8 is located, a hook member 20 is located at a height to engage the lock portion 10 when the door is closed, and is rotatable by a support shaft 21. The hook 20a of the hook member 20 engages with the lock portion 10 by the elasticity of the fill spring 22.

Hereinafter, the effects of the present invention will be explained.

When opening the closed door N3, see Figures 1 to 3.
In the figure, when the door opening button 6 is pushed with a fingertip against the elasticity of the coil spring 19, the door opening button 6 pushes one end 16a of the stacking rod 16, and this stacking rod 16 is pushed against the support shaft 17. The other end 16b of the stacking rod 16 is assisted by the elasticity of the coil spring 12 and pushed up by the vertical slider 11 (see FIG. 2). Then, the vertical slider 11
The upper part 11b of the hook 20a of the hook member 20 is pushed up against the elasticity of the coil spring 22, and the upper part 11b of the lock part 1
0 is released, and the hook member 20 is further rotated to the left around the support shaft 21 by the vertical slider 11.

As a result, when the opening/closing w3 is relatively opened horizontally and opened, the locking pawl 24 is simultaneously locked to the locking portion 9C of the guide member 9 by the elasticity of the coil spring 25. , at this time, even if you take your finger off the door opening button 6, the third
As shown in the figure, the hook 20a is reliably released without re-engaging with the locking part 10. When the opening/closing door 3 is completely opened, a part of the horizontal slider 14 presses the locking pawl 24 due to the elasticity of the coil spring 15, so that the locking pawl 24 is pressed against the engaging portion 9C. After being released from the coil spring 1, the vertical slider 11 is released from the coil spring 1.
It moves back to its original position with the elasticity of 2. In this way, the opening/closing door 3 can be opened reliably.

Next, when closing the opened door 3, by manually pushing one end of the door 3, the hook 20a of the hook member 20 is moved to the locking portion, as shown in FIG. 10.

〔Effect of the invention〕

As described above, according to the present invention, the opening/closing door 3 is provided at the opening of the oven frame 7 that is integrated with the case body 1, and the guide member 9 has the lock portion 10 formed in a part of the oven frame 7. A vertical slider 11 and a horizontal slider 14, each urged by the guide member 9, are provided orthogonally to each other, and the oven frame 7 below the vertical slider 11 is installed.
A stacking rod 16 is pivotally attached to the stacking rod 16, and an opening button 6 is attached to the opening/closing door 3 on the rotation path of the stacking rod 16 so as to push the stacking rod 16, and In a heating cooking apparatus in which a hook member 20 is pivoted to the opening/closing door 3 so as to be released from the lock part 10 by the sliders 11 and 14, the locking claw 24 is biased by a part of the vertical slider 11.
The hook part 20a of the opening/closing door 3 is securely moved from the locking part 10 by pressing the door opening button 6. Not only is it released and allows for smooth opening and closing operations, but
Since the configuration is simple, assembly and alignment are easy, and labor can be saved through mass production.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the door opening/closing device of the heating cooking apparatus of the present invention, FIGS. 2 to 4 are diagrams for explaining the present invention in detail, and FIG. Slanted view of the device, No. 6
The figure is a perspective view showing the opening/closing door in the open state, and Figure 7 is
An honest view of the heating cooking device that has already been proposed, FIG. 8 is a sectional view showing an enlarged main part of the heating cooking device that has already been proposed, and FIG. 9 shows the operation of the heating cooking device that has already been proposed. FIG. DESCRIPTION OF SYMBOLS 1...Case body, 2...Operation panel, 3...Opening/closing door, 6...Push button for part, 7...Oven frame body, 9...
...Guide member, 9C...Engagement part, 10...Lock part, 11...Vertical slider, 14...Horizontal slider,
16... Stacking rod, 20... Hook member, 21... Support shaft, 23... Notch recess, 24... Locking claw, 25...
・Coil spring. Applicant's agent: Sato - Yuo 2

Claims (1)

[Claims] An opening/closing door is provided at the opening of an oven frame that is integral with the case body, a guide member having a lock portion is installed in a part of the oven frame, and a vertical slider and a horizontal slider are respectively urged by the guide member. The sliders are provided perpendicularly to each other,
A lever is pivotally attached to the oven frame below the vertical slider, and an opening button is attached to the opening/closing door on the rotation path of the lever so as to push the lever, and the lock portion is located In the heating cooking apparatus, in which a hook member is pivoted to the opening/closing door so as to be released from the locking part by both the sliders, a locking claw biased by a part of the vertical slider is moved to the engaging part of the guide member. A heating cooking device characterized in that it is attached so that it can be freely engaged and detached.