JPH03271632A - Heating cooking apparatus - Google Patents

Abstract

PURPOSE:To obtain door opening and closing device of a cooking apparatus to be smoothly opened or closed at a door, easily attached and detached, and effectively mounted by engaging door engaging fittings with door pivoting fittings, and elastically mounting the pivoting fittings by a leaf spring. CONSTITUTION:When door engaging fittings 25 internally provided at a door 21 are aligned at door pivoting fittings 20 separated in a horizontal state and pressed in a direction of an arrow D, the fittings 20 are inserted into the fittings 25, its end 20b is positioned by a stopper 24b, and elastically mounted on the surface frame 24 of the door 21 by a leaf spring 26. Thus, the door 21 is rotatably pivotally secured to a front frame 18. If the door 21 is separated from the frame 18, the door is pulled in the direction of an arrow E. In order to stably and effectively elastically mount the door 21 by the frame 24, a plurality of the springs 26 or elastically mounting parts 26a are provided. In order to easily insert the fittings 20 into the fittings 25, the end of the fittings 20 is finely formed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to cooking appliances that use electricity or gas as a heat source and are used as kitchen equipment in general households, especially cooking appliances that have an opening/closing door.
! II'! This relates to a device for opening and closing the door of a cooking appliance.

Conventional technology Conventionally, this type of heating cooker door opening/closing device was developed in 1973.
-315425 was common. The configuration will be explained below with reference to FIG. 9.

As shown in the figure, 1 is added? A bearing part 3 is cut out and provided at the lower part of both side walls 2a of an opening part 2 in a housing of a cooking appliance. This bearing part 3 is a rotating shaft insertion part 3 cut out in the horizontal direction.
A and a bearing 3b, which is cut out further downward and toward the front, form a F-shape. Reference numeral 4 denotes a door having a see-through window 5, and both sides of the door extend downward to form a rotating shaft portion 6 to which a rotating shaft 7 is attached. The door 4 is rotatably and removably attached to the housing 1 by inserting the rotating shaft 7 into the rotating shaft insertion portion 3a and fitting it into the bearing 3b.

Problems to be Solved by the Invention In such a conventional door opening/closing device for a cooking appliance, the rotating shaft 7 is fitted into a bearing 3b to serve as the rotating shaft for the door 40, so the rotating shaft 7 is unstable and the door 4 is rotated. The door rattles when opening and closing, making it difficult to open and close smoothly, and depending on how much force is applied during the opening and closing operation, the rotating shaft 7 may come off from the bearing 7, making it extremely inconvenient to use, and causing burns from the detached door. Danger b
It was.

In addition, when fitting the n4 bearing part 3, the rotating shaft 7 is
Since the door 40 has to be fitted while being aligned with the bearings 3 on both sides of the door, it is difficult to remove the parannu, and furthermore, since the bearings 3 are bent in a figure 7 shape, there is a problem in that the door 40 requires some skill to attach and detach.

Furthermore, since the bearing portion 3 is provided by cutting out the both side walls 2 of the housing 1, the bearing portion 3 is weak in strength and may easily deform if an unexpected force is applied when opening the door. . Sata,
Since the rotating shaft 7 is also cantilevered, there is also the problem that it may undergo similar repair deformation. In addition, the rotating shaft portion 6 and the rotating shaft 7
There was also a problem in that it was difficult to clean since it protruded from the door 4.

The present invention is intended to solve the above-mentioned problems, and a first object thereof is to provide a cooking device door opening/closing device that allows the door to open and close smoothly, is easy to attach and detach, and can be installed reliably.

The second object is to provide a cooker door opening/closing device that can withstand unexpected force when the door is opened.

A third object is to provide a cooking device door opening/closing device that provides a mounting w& when the door is attached and prevents the door from being removed inadvertently.

Means for Solving the Problems In order to achieve the above object, the present invention has a first means that is rotatable on bearing fittings fixed to both ends of the lower part of the front frame forming the front opening of the 7Xl heat cooker. A door is made up of a substantially U-shaped door pivot bracket pivoted to a door, a front frame and a back frame that sandwich a glass window, and an opening is provided at both ends of the lower surface, and one end is located at the opening. A substantially U-shaped door fitting is arranged inside the door, a plate spring and a metal fitting are arranged on the door fitting, and the door fitting is arranged in the door pivot fitting. The door fitting is provided with a leaf spring, and the door fitting is snapped onto the door fitting.

The second means includes a flat mounting part, a bearing part bent into a U-shape at both ends of the mounting part, a locking piece extending downward from the rear edge of the bearing part, and a lower end of the mounting part. The mounting part of the bearing fitting has a stopper piece bent in an L-shape in the same direction as the bearing part. Insert it on the back side,
The locking piece is brought into contact with the lower edge of the notch of the front frame, and the mounting part is fixed to the front plate.

The third means is to provide a dogleg-shaped engagement protrusion that protrudes inward on the bottom surface of the approximately U-shaped door pivot metal fitting, and on the other hand, it snaps onto the bottom surface of the approximately U-shaped door fitting. A leaf spring formed in the shape of a square is disposed, and the door is prevented from being hit and removed by engagement between the engaging protrusion of the door pivot fitting and the landing portion of the leaf spring.

Function The present invention was developed by FC Kiri as described above, and includes a bearing metal fitting fixed to both ends of the lower part of the antecedent of the 7XI heat cooker. Insert the door fitting, and use the leaf spring installed on the door fitting to snap the door pivot fitting, making the door pivotable and removable.
The door can be opened and closed smoothly, and since the door is inserted and removed in a straight line, it is easy to attach and detach the door, and the resilient force of the leaf spring allows the door to be completely attached.

In addition, the bearing metal fittings were inserted into the back side of the front frame through the notches formed at both ends of the lower part of the front frame, and the locking pieces formed on the bearing metal fittings were fixed by coming into contact with the lower edge of the notch, so that the door could be opened. Even if an unexpected force is sometimes applied to the door, the contact between the stopper piece and the lower edge of the notch can prevent the mounting part of the bearing fitting and the front frame from deforming.

Furthermore, the engagement between the engagement protrusion protruding from the door pivot bracket and the plate plate provided on the door fitting bracket that forms the elastic contact part in a dogleg shape provides a comfortable fit when the door is installed. , it is possible to prevent the door from being accidentally removed.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to FIGS. 1 to 9. The example is a microwave type in which a heating device for boiling is placed on the top surface of the cooking table in the kitchen, and a heating device for roasting (hereinafter referred to as 711 heat cooking device) is placed in the front. heating cooker (hereinafter referred to as microwave)
However, the present invention is not limited to such a microwave cooking device, but can be implemented in a 7111rPx cooker having a bottom-opening, top-opening, or side-opening door opening/closing device. It is possible.

First, the configuration of the microwave oven of this embodiment is shown in FIG.

The top heater section A has a heating body of 12 ft consisting of a sheathed heater or a gas burner formed in a spiral shape, and has a cooking table 13.
It is recessed into the top surface of the The main body 14 includes a top heater part A and a cooking device B, and is equipped with a control spring 16, a power switch 16, and a cooking device ByFr on the front.

7111] Thermal contracting device B has a case 17, a front frame 18 provided around the front edge of the case 17, a door 21 that can be freely opened and closed, and a door 21 that is pivotally attached to the front frame 18 and a heating device that is disposed inside the case 17. It consists of a body (not shown).

Next, a door opening/closing device according to a first embodiment will be explained with reference to FIGS. 1 to 3.

The front frame 18 forms a front opening of the cooking device B, and U-shaped bearing fittings 19 are fixed to both ends of the lower part of the front frame 18. This bearing fitting 19 has a U-shaped door pivot fitting 20 attached to the shaft 19a.
It is pivoted so that it can be moved freely. The door 21 consists of a front frame 24 and a back frame 23 that sandwich a glass window 22 from the front and back, and the front frame 24 and the back frame 23 are integrally joined in the air by appropriate means. Openings 21a are formed at both ends of the lower surface of the door 21 at positions corresponding to the door pivot fittings 20. In the hollow of the door 21, one end 25a thereof is an opening 2.
A door fitting 26 is provided in a U-shape facing 1a into which the door pivot fitting 2o is inserted, and a plate spring 26 is provided on the inner surface of the door fitting 26 to which the door pivot fitting 20i snaps. The leaf spring 26 is formed with a 〈-shaped snapping part 26a that makes it easy to fit the door pivot metal fitting 20 into it and snaps onto it. 24b is a stopper when the door pivot fitting 20 is inserted into the door fitting fitting 26;
It is provided on the surface frame 24 of the door 21 by an appropriate method.

To explain the operation based on the above belief, the door fitting fitting 2 installed inside the door 21 is attached to the door pivot fitting 20 which is divided into horizontal plates.
6 and push it in the direction of the arrow, the n pivot bracket 20 is inserted into the door fitting 25 and its tip 20b
is positioned by the stopper 24b, and is pressed against the front frame 24 of the door 21 by the leaf spring 26. In this way, the door 21 is pivotally attached to the front frame 18 so as to be freely movable.

When the door 21 is to be removed from the front frame 18, it is pulled out in the direction of arrow E. Inside, door 21 gold surface 24
In order to achieve more stable and reliable impact, it is possible to provide a plurality of leaf springs 26 or a plurality of impact landing portions 26a. Further, in order to facilitate insertion of the door pivot fitting 20 into the door fitting 26, the tip of the door pivot fitting 20 may be formed to be thin.

Furthermore, a closed door holding means for keeping the door closed can be implemented using an appropriate method.

Next, the structure of the bearing fitting 19 according to the second embodiment and its attachment will be explained with reference to FIGS. 6 and 7.

The bearing fitting 19 has bearing parts 19b bent into a U-shape at both ends of a flat mounting part 19a, and a bearing hole 19d formed therein. A locking piece 19c is provided at the rear edge of the bearing portion 19d, and a locking piece 19c is provided at the lower end of the mounting portion 19a.
A stopper piece 19e is formed by bending in the same direction as the bending direction of eb.

On the other hand, at both lower ends of the front frame 18, a notch 18a is formed, which faces upward from a bent part 18b that is bent from the front surface of the front plate 18 to form a lower surface, into which a mounting part 19a of a bearing fitting 19 can be inserted. It is set up. This notch 18a is suitable for mounting the bearing fitting 19! It has a function of determining IIL and a function of preventing deformation of the front frame 18 due to carelessly applied force when opening the door, which will be described later. 18c is the folded edge folded back from the antecedent 18, and is the case 1 of cooking device B.
7 is fixed by a method such as welding, and also serves as a positioning edge for the bearing fitting 19 in the vertical direction.

i. The vertical positioning of the bearing fitting 19 is performed using the bearing part 1.
This may be done by abutting the upper edge of the notch 9a and the upper edge of the notch 18a.

In the above configuration, to attach the bearing fitting 19 to the antecedent 18,
Insert the mounting part 19a'i of the bearing fitting 19 through the notch 18a, insert the mounting part 19a'i into the back surface of the front frame 18, and the bent part 1 below the locking piece 19c'i notch 18a.
8b, and further fold the upper edge of the mounting portion 19a to the edge 1
After coming into contact with 8G, the mounting portion 1sa'l is attached to the front plate 18 by welding or other appropriate method.

To explain the operation of the above structure, when the 7% 21 is opened, the door pivot bracket 20 falls to a horizontal position, but the door pivot bracket 2o comes into contact with the lower surface of the stopper piece 19e of the bearing bracket 19 (the first (see Figure 7), further rotation is inhibited. At this time, if a force is inadvertently applied to the door 21 in the direction of the arrow M in FIG. 6, a moment M per axis is also applied to the bearing fitting 19, which acts to deform the antecedent 18. However, bearing fitting 1
Since the locking piece 19C of 9 is in contact with the bent part 18b of the front plate 18, the bent part
A reaction force F against M acts to prevent deformation of the front frame 18.

Next, referring to FIG. 8, a description will be given of the structure of a third embodiment of a door stopper.

The door pivot bracket 20 has a spring-loaded portion 2 of the leaf spring 26 when the door is attached.
An engaging protrusion 20a that engages at a position beyond 6a'i is provided to protrude inward in a U-shape.

To explain the function of the above structure, when J'i21 is inserted into the door pivot bracket 20, the engagement protrusion 20 of the door pivot bracket 20
a presses the landing portion 26ai of the leaf spring 26 and presses the landing portion 26ai
The door pivot fitting 2o comes into contact with the nutopper 24b, and the door 21 is installed. When the door 21 is installed, the locking protrusion 20a engages at a position beyond the snapping part 26a of the leaf spring 26, and this engagement prevents the door 21 from being accidentally removed. It is something.

Effects of the Invention As is clear from the above-mentioned embodiments, according to the present invention, both ends of the lower surface inside the door are attached to the door pivot fitting which is pivoted to the bearing fittings fixed to both ends of the lower part of the antecedent of the heating cooker. By inserting the door fitting provided in the door fitting, and snapping the door pivot fitting with the leaf spring provided on the door fitting, N is rotatably and pivotably attached and detached. Since the door can be opened and closed smoothly, and can be attached and detached by linearly inserting and removing, attachment and detachment operations are smooth and easy, and the resilient force of the leaf spring allows the door to be attached reliably.

In addition, the bearing metal fittings were inserted into the back side of the front frame through the notches formed at both ends of the lower part of the front frame, and the locking pieces formed on the bearing metal fittings were fixed by coming into contact with the lower edge of the notch, so that the door could be opened. Even if an unexpected force is sometimes applied to the door, the contact between the locking piece and the lower edge of the notch can prevent the mounting part of the bearing fitting and the antecedent from deforming.

Furthermore, the engagement between the engagement protrusion protruding from the door pivot bracket and the leaf spring provided on the door fitting and having a dogleg-shaped elastic contact portion improves the feeling of fit when the door is installed. It is possible to provide the 71111 heat cooker which has excellent effects such as being able to prevent the door from being accidentally removed and the resulting burns.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts of the door opening/closing device of the heat cooker according to the first embodiment of the present invention, FIG. 2 is a sectional view of the same side, and FIG. 3 is an external perspective view of the same operating state, Fig. 4 is an external perspective view of the heating cooker, Fig. 6 is an exploded perspective view of the second embodiment, and Fig. 6 is an exploded perspective view of the second embodiment.
Figure a is an assembled front view of the main parts, Figure b is a side sectional view taken along line XX in Figure A, and Figure 7a. b is a front view and a side sectional view of the same essential parts, FIG. 8 is a side sectional view of the essential parts of the third embodiment, and FIG. 9 is a conventional example 7.
A18...Front frame, 19...Bearing fitting, 1
9a...Mounting part, 19b...Bearing part,
19c... Locking piece, 19e... Stopper piece, 20... Door pivot bracket, 20 a...
...Engagement protrusion, 21...Door, 21a...
・Cutten section, 22...Glass window, 23...
・Back frame, 24...Front frame, 26...
Door fitting, 25a... One end of door fitting, 2
6...Plate spring, 26a...Bullet landing part, B
・・・・・・Heating cooker.

Claims (3)

[Claims] (1) A substantially U-shaped door pivot bracket that is rotatably supported by bearing brackets fixed to both ends of the lower part of the front frame that forms the front opening of the heating cooker, and a surface that sandwiches the glass window. A door consisting of a frame and a back frame and having an opening at both ends of the lower surface, a substantially U-shaped door fitting with one end facing the opening and disposed inside the door, and the door. A heating cooker comprising: a leaf spring disposed on a fitting; the door fitting fitting is fitted into the door pivoting fitting; and the door pivoting fitting is snapped onto the door pivoting fitting by the plate spring. (2) A flat mounting part, a bearing part with both ends of the mounting part bent into a U-shape, a locking piece extending downward from the rear edge of the bearing part, and a lower end of the mounting part attached to the bearing part. A bearing fitting having a stopper piece bent in an L-shape in the same direction as the part,
The mounting part is inserted into the back surface of the front frame through the notch formed at both ends of the lower part of the front frame of the cooking chamber, and the locking piece is brought into contact with the lower end of the notch of the front frame, and the mounting part is inserted into the back surface of the front frame. 2. The heating cooker according to claim 1, wherein a portion is fixed to the front plate. (3) A dogleg-shaped engagement protrusion is provided on the bottom of the approximately U-shaped door pivot bracket, and a snap-fitting portion is provided on the bottom of the approximately U-shaped door fitting. 2. The heating cooking device according to claim 1, further comprising a leaf spring formed in a letter shape, and the door is prevented from being hit and removed by engagement between an engaging protrusion of the door pivot fitting and a landing portion of the leaf spring.