JPH08233290A - Hating cooking apparatus - Google Patents

Abstract

PURPOSE: To always support a door in a stable state by fixing the substantially horizontal main plate of a hinge receiver to the lower surface of a flange, bringing the suspended plate of the receiver into contact with the surface of a front plate, and restricting the rotation of the surface of the front plate in the direction along the surface of the front plate at the suspended plate. CONSTITUTION: As a door 16 is opened, a force for deflecting the door 16 down is operated at a flange 13a through upper hinge 26. In this case, the substantially horizontal main plate 22a of a hinge receiver 22 is fixed to the flange 13a, and the suspended plate 22b of the receiver 22 is brought into contact with the surface of a front plate 14, and hence the plate 22b of the receiver 22 tends to rotate along the surface of the plate 14. On the other hand, the rotation of the surface of the plate 14 at the plate 22b is restricted by a restricting means 25, and hence the plate 22b is not rotated, but the deflection of the flange 13a is prevented by the receiver 22. Thus, the door 16 can be always supported in a stable state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker having an improved door support structure.

[0002]

2. Description of the Related Art Conventionally, a heating cooker such as a microwave oven is provided with a door for opening and closing a heating cooking chamber, as is well known. The upper and lower parts of this door are rotatably supported on the upper and lower parts of the main body. FIG. 14 shows the upper support structure of the door. In the figure, the main body 1 comprises an outer box 2, an inner box 3 and a front plate 4. In the inner box 3, the side plate portion 3
The a and the upper plate portion 3b are welded to each other at a substantially horizontal flange portion 3c.

An upper hinge 5 is attached to the upper surface of the flange portion 3c by screwing. One end of the upper hinge 5 is L-shaped and protrudes from the upper portion of the front plate 4 to the front side, and the top portion of the door 6 is rotatably supported at the tip portion thereof. The lower portion of the door 6 is rotatably supported on the lower portion of the main body by a lower hinge (not shown).

[0004]

In the above structure, the door 6 is opened in the direction of arrow A, but as shown by the chain double-dashed line in FIG. Then, the door 6 is in a slightly downward direction (arrow B direction)
It may move to be slightly twisted. That is, in this type of cooker, the upper hinge 5 is structurally
Is attached to the flange portion 3c of the inner box 3, and the lower hinge (not shown) is attached to the highly rigid outer box bottom plate which is the base of the entire cooking device. In such a structure, the flange portion 3c is liable to bend downward (direction of arrow C) when a large force is applied.

Therefore, when a large external force acts on the door 6 in the direction of arrow A, the external force acts on the flange portion 3c via the upper hinge 5 as described above, and the flange portion 3c bends as described above. Then, after all, the door 6 moves so as to be twisted in the direction of the arrow B. Further, if the flexural deformation of the flange portion 3c is repeated, that portion may be permanently deformed and the supporting state of the door may be inclined.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a heating cooker capable of supporting the door in a stable state at all times.

[0007]

A first means is a substantially rectangular outer box having a front surface opened, and a substantially rectangular outer box provided inside the outer box having a front surface opened to serve as a cooking chamber. A main body composed of an inner box and a front plate that covers the front open portion between the outer box and the inner box, a main plate part that is substantially horizontal, and a hanging plate part that hangs from the front edge of the main plate part. Is substantially L-shaped, the main plate portion is fixed to the lower surface of a substantially horizontal flange portion in which the upper plate portion and the side plate portion of the inner box are joined, and the hanging plate portion is the front plate. Attached to the upper surface of the flange portion, and a hinge means applied to the plate surface of the hinge, restriction means for restricting rotation of the hanging plate portion of the hinge receiver in a direction along the plate surface of the front plate. The upper hinge and the upper part are rotatably supported on the upper part of the main body by the upper hinge. , Lower is rotatably supported via a suitable support means in the lower part of the body, the is configured to include a door for opening and closing the cooking chamber (the invention of claim 1).

The second means is characterized in that, in the first means, the hinge receiver is joined to the flange portion by welding (the invention of claim 2). According to a third means, in the first means, a protrusion is formed on one of the upper hinge and the flange, and a hole is formed on the other of the upper hinge and the flange. It is characterized by being attached by fitting and screwing (the invention of claim 3). A fourth means is characterized in that, in the first means, the hanging plate portion of the hinge receiver is fixed to the front plate (the invention of claim 4). According to a fifth means, in the first means, the side plate portion and the front plate of the inner box are joined by caulking, and the restricting means is provided on the side of the hanging plate portion of the hinge receiver with respect to the side end portion of the caulking portion. It is characterized in that it is constituted by abutting the ends (the invention of claim 5).

[0009]

In the first means, as the door is opened, a force acts on the flange portion via the upper hinge so as to bend and deform the flange portion in the downward direction. Since the main plate portion having a shape is fixed to the lower surface of the flange portion and the hanging plate portion of the hinge receiver is applied to the plate surface of the front plate, the hanging plate portion of the hinge receiver is arranged along the plate surface of the front plate. Try to turn. However, in the first means, the restricting means restricts the rotation of the hanging plate portion in the direction along the plate surface of the front plate.
The hanging plate does not rotate, that is, the hinge receiver prevents the flange from being deformed. As a result,
The door does not move like being twisted, and the flange portion is not permanently deformed, so that the door is always supported in a stable state.

In the second means, since the hinge receiver is joined to the flange portion by welding, the hinge receiver can be joined at the time of welding and joining the flange portion, which is excellent in workability. In the third means, a protrusion is formed on one of the upper hinge and the flange, and a hole is formed on the other of the upper hinge and the flange, and the upper hinge is fitted and screwed. By installing with, the number of steps for screw installation and removal can be reduced compared to the case where all of the multiple locations are screwed, and the upper hinge can be easily removed during maintenance. .

In the fourth means, since the hanging plate portion of the hinge receiver is fixed to the front plate, the bending deformation of the flange portion can be prevented more reliably. In the fifth means, the side plate portion of the inner box and the front plate are joined by caulking, and the regulating means abuts the side end portion of the hinge receiver with the side end portion of the hinge receiver. By virtue of the fact that the caulking portion has an extremely high strength, it is possible to more reliably prevent rotation of the hanging plate portion, and it is possible to more reliably prevent flexural deformation of the flange portion. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In FIG. 2, the main body 1
1 includes a rectangular inner box 13 having a front surface opened inside a rectangular outer box 12 having a front surface opened, and a front plate 14 for covering a front surface open portion between the outer box 12 and the inner box 13. It consists of and. The inside of the inner box 13 is used as a cooking chamber 15. An operation panel 11a is mounted on the side of the front plate 14, and a space on the back side of the operation panel 11a (outer box 1
The space between the right side plate 2 and the right side plate of the inner box 13 is a machine room (not shown) as is well known. Required equipment such as a magnetron is installed in this machine room. The main body 11 is rotatably provided with a door 16 that covers the heating and cooking chamber 15 together with the front plate 14. The support structure for the door 16 will be described later.

As can be seen from FIG. 9 showing the cross section and FIG. 2 described above, the inner box 13 has a plate member 17 having a bottom plate portion 17a and both side plate portions 17b and 17c, and an upper plate portion 1.
8 and the back plate portion 19 are joined together. The joining between the side plate portions 17b and 17c and the upper plate portion 18 has the configuration shown in FIG. In FIG. 1, the joint portion of the left side plate portion 17b when viewed from the front is shown. The upper end portion of the side plate portion 17b extends substantially horizontally, and the extended portion and the end portion of the upper plate portion 18 are joined by spot welding.

The front end portions of the side plate portions 17b (17c) and the upper plate portion 18 and the front plate 14 are joined by caulking. The crimped portion of the side plate portion 17b (17c) and the front plate 14 is indicated by reference numeral 14a, and the crimped portion of the upper plate portion 18 and the front plate 14 is indicated by reference numeral 14b. In the horizontal flange portion 13a which is the joint portion in the inner box 13,
The end portion of the upper plate portion 18 is projected longer than the extending portion of the side plate portion 17b, and the overlapping portion of two sheets is indicated by reference numeral 13b (also shown in FIG. 5) and the one portion is indicated by reference numeral 13c. There is.
As shown in FIGS. 3, 5 and 6, a rectangular hole portion 20 and a screw insertion hole 21 are formed in the above-mentioned two-sheet overlapping portion 13b.

A hinge receiver 22 is attached to the lower surface of the flange portion 13a. As shown in FIG. 4, the hinge receiver 22 includes a main plate portion 22a having a substantially horizontal shape,
The main plate portion 22a and the hanging plate portion 22b that hangs down from the front edge of the main plate portion 22a are formed into a generally L-shape. An auxiliary piece portion 22c is projected on the main plate portion 22a with a step corresponding to the thickness of the side plate portion 17b. This auxiliary piece 22c
A rectangular hole 23 and a screw hole 24 are formed therein. The hanging plate portion 22b is slightly wider than the main plate portion 22a.

Thus, the main plate portion 22a has the flange portion 1
It is joined to the lower surface of the one-piece portion 13c of 3a by spot welding. Then, the hanging plate portion 22b is the front plate 14
Is applied to the plate surface of the front plate 14 and the side end 22d of the hanging plate 22b is caulked with the side plate 17b and the front plate 14.
The side end portion 14c of "a" can be brought into contact with the side end portion 14c. Further, in the attached state of the hinge receiver 22, as can be seen from FIGS. 5 and 6, the hole portion 23 and the screw hole 24 of the hinge receiver 22 are different from the hole portion 20 and the screw insertion hole 21 of the flange portion 13a. Corresponds to each.

An upper hinge 26 is attached to the upper surface of the flange portion 13a. The upper hinge 26 is configured by extending a support piece portion 26b that stands up in a substantially L shape and stands up on the tip side of the base portion 26a. The support piece portion 26b projects from the upper portion of the front plate 14 to the front side. The tip portion extends to the left when viewed from the front, and the support hole 27 is formed in that portion. The base portion 26a has a protrusion 28 (see FIG. 6) formed by being cut and raised downward, and a screw insertion hole 29 is formed.

Therefore, the protrusion 28 is replaced by the flange portion 13.
By fitting the screw 30 into the hole portion 20 of a and the hole portion 23 of the hinge receiver 22 and screwing the screw 30 into the screw hole 24 of the hinge receiver 22 through the screw insertion hole 29 and the screw insertion hole 21 of the flange portion 13a. The upper hinge 26 is attached to the upper surface of the flange portion 13a. Door 16 mentioned above
Has its upper portion rotatably supported in the support hole 27 of the upper hinge 26 via a hinge pin (not shown), and its lower portion in the outer case 1
The second bottom plate portion 12a (see FIG. 2) is rotatably supported via a lower hinge and a hinge pin (not shown).

In the above structure, the door 16 is opened as shown in FIG. 8 by rotating the door 16 in the direction of arrow A from the closed state shown by the solid line in FIG. In this case, when an external force is further applied to the door 16 in the direction of arrow A from the rotation limit position, the flange portion 13 a is mediated by the upper hinge 26.
On the other hand, a force acts to bend and deform this downward (direction of arrow C, also shown in FIG. 5).

In this case, in this embodiment, the main plate portion 22a of the hinge receiver 22 is fixed to the lower surface of the flange portion 13a, and the hanging plate portion 22b of the hinge receiver 22 is applied to the plate surface of the front plate 14. From the hanging plate part 22b
However, it tends to rotate in the direction of the arrow C described above along the plate surface of the front plate 14. However, the side end 22d of the hanging plate 22b
However, since the side plate portion 17b and the front plate 14 can come into contact with the side end portion 14c of the caulking portion 14a, in other words, the regulating means 25 for regulating the above-described rotation of the hanging plate portion 22b.
Is provided, the hanging plate portion 22b does not rotate, that is, the hinge receiver 22 prevents the flange portion 13a from bending and deforming.

As a result, according to the present embodiment, the door 16 does not move like being twisted, and the flange portion 13a is not permanently deformed.
Can always be supported in a stable state.

In particular, according to this embodiment, the regulating means 25
However, with respect to the side end portion 14c of the caulking portion 14a where the strength is strong against the external force from the arrow C direction, the hinge receiver 2
Since the side end portions 22d of the two hanging plate portions 22b are brought into contact with each other, the rotation of the hanging plate portion 22b can be more reliably prevented, and the bending deformation of the flange portion 13a can be more reliably performed. Can be stopped. Moreover, since the caulking portion 14a is used as a part of the regulating means 25, it is possible to contribute to simplification of the configuration.

By the way, FIG. 13 shows a reference example of the hinge receiver. As shown in FIG. 13, the hanging plate portion 51b of the hinge receiver 51 is applied to the side plate portion 17b instead of the front plate 14. However, in this configuration, when the above-mentioned external force in the direction of arrow C acts, the side plate portion 17b has extremely low rigidity with respect to the external force from that direction, so that the side plate portion 17b is dented and deformed, and by extension, the flange portion 13a. Will also be deformed. In this respect, in the present embodiment, as described above, since the hanging plate portion 22b of the hinge receiver 22 is applied to the plate surface of the front plate 14 to restrict the rotation of the hanging plate portion 22b, the side plate portion 17b is There is no such thing as dent deformation.

Further, according to this embodiment, the hinge receiver 22
Is joined to the flange portion 13a by welding,
Since the hinge receiver 22 can be joined at the time of welding and joining the flange portion 13a, workability is good. Further, a protrusion 28 is formed on the upper hinge 26, and holes 20 and 23 are formed in the flange 13a and the hinge receiver 22 so as to fit with the protrusion 28. Since it is configured to be attached by screwing with, compared to the case where all of the multiple points are screwed,
The number of man-hours for attaching and detaching screws can be reduced, and the upper hinge 26 can be easily detached during maintenance or the like.

The hole may be formed only in the flange 13a, or a large hole for inserting the protrusion may be formed in the flange 13a and the protrusion may be passed through the hinge receiver 22 to form the protrusion. A fitting hole may be formed. The relationship between the protrusion and the hole may be reversed.

The restricting means may be as shown in FIGS. 10 and 11 showing the second embodiment of the present invention, or as shown in FIG. 12 showing the third embodiment. In FIG. 10 and FIG. 11, the restricting means 31 is used as the hanging plate portion 22.
It comprises a hole 32 formed in b and a protruding piece 33 formed in the front plate 14 and fitted into the hole 32, for example by cutting and raising. Even in this case, the intended purpose of the present invention can be achieved. In FIG. 12, the regulating means 41 is
It is composed of a hole 42 formed in the hanging plate portion 22b and a protrusion 43 formed in the front plate portion 14 and fitted into the hole 42, for example, by punching. In this case as well, the intended purpose can be achieved.

Furthermore, the present invention is not limited to the above embodiments, but may be as follows. The hanging plate portion 22b of the hinge receiver 22 may be fixed to the front plate 14 (for example, by spot welding). In this case, the hanging plate 22
The rotation of b can be more reliably restricted, and the bending deformation of the flange portion 13a can be prevented more reliably.

[0028]

As is apparent from the above description, the present invention can obtain the following effects. According to the invention of claim 1, the substantially horizontal main plate portion of the hinge receiver is fixed to the lower surface of the flange portion, the hanging plate portion of the hinge receiver is applied to the plate surface of the front plate, and by the restricting means. Since the hanging plate portion is restricted from rotating in the direction along the plate surface of the front plate, it is possible to reliably prevent the flange portion from being bent and deformed when the door is opened. It is possible to always support the door in a stable state without permanently deforming the part.

According to the second aspect of the invention, since the hinge receiver is joined to the flange portion by welding, the hinge receiver can be joined at the time of welding and joining the flange portion, resulting in good workability. According to the invention of claim 3, a protrusion is formed on one of the upper hinge and the flange, and a hole is formed on the other of the upper hinge and the flange so as to fit with the protrusion. By attaching by screwing, the number of steps for attaching and detaching the screw can be reduced as compared with the case where all of the plurality of places are screwed, and the upper hinge can be easily removed during maintenance or the like.

According to the fourth aspect of the invention, since the hanging plate portion of the hinge receiver is fixed to the front plate, the flexural deformation of the flange portion can be prevented more reliably. According to the invention of claim 5, the regulating means is constituted by bringing the side end portions of the hanging plate portion of the hinge receiver into contact with the side end portions of the side plate portion, the front plate and the caulking portion of the inner box. Therefore, the caulking portion having an extremely high strength makes it possible to more reliably prevent the hanging plate portion from rotating, and more reliably prevent the bending deformation of the flange portion.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view of essential parts showing a first embodiment of the present invention.

FIG. 2 is an overall perspective view

FIG. 3 is a cutaway perspective view of a main part before attachment of an upper hinge.

FIG. 4 is a perspective view of a hinge receiver.

FIG. 5 is a vertical sectional rear view of the hinge receiving portion.

FIG. 6 is a vertical sectional side view of a hinge receiving portion with an upper hinge attached.

FIG. 7 is a cross-sectional plan view of a hinge receiver and a front plate portion.

FIG. 8 is a cutaway perspective view of a main part with a door opened.

FIG. 9 is a vertical sectional front view of the inner box.

FIG. 10 is a fragmentary perspective view showing a second embodiment of the present invention.

FIG. 11 is an exploded vertical side view of the front plate and the hinge receiver.

FIG. 12 is an exploded vertical sectional side view of a front plate and a hinge receiver showing a third embodiment of the present invention.

FIG. 13 is a diagram corresponding to FIG. 1 showing a reference example.

FIG. 14 is a view corresponding to FIG. 1 showing a conventional example.

[Explanation of symbols]

11 is a main body, 12 is an outer box, 13 is an inner box, 13a is a flange part, 14 is a front plate, 14b is a caulking part, 16 is a door, 17
Is a plate member, 17b is a side plate part, 18 is an upper plate part, 20 is a hole part,
22 is a hinge receiver, 22a is a main plate portion, 22b is a hanging plate portion, 23 is a hole portion, 25 is a regulating means, 26 is an upper hinge, 2
8 is a protrusion, 30 is a screw, 31 is a regulating means, and 41 is a regulating means.

Claims (5)

[Claims] 1. A substantially rectangular outer box having an open front surface, an approximately rectangular inner box provided inside the outer box and having a front opening and a heating and cooking chamber, and the outer box and the inner box. A main body composed of a front plate that covers the front opening between the main plate, a substantially horizontal main plate, and a hanging plate that hangs from the front edge of the main plate. A hinge receiver in which the main plate portion is fixed to the lower surface of a substantially horizontal flange portion in which the upper plate portion and the side plate portion of the inner box are joined, and the hanging plate portion is applied to the plate surface of the front plate. A restriction means for restricting rotation of the hanging plate portion of the hinge receiver in a direction along the plate surface of the front plate; an upper hinge attached to an upper surface of the flange portion; Is rotatably supported by the upper hinge, and the lower part is appropriately attached to the lower part of the main body. Is rotatably supported through a supporting means, the heating cooker comprising a door for opening and closing the cooking chamber. 2. The heating cooker according to claim 1, wherein the hinge receiver is joined to the flange portion by welding. 3. A protrusion is formed on one of the upper hinge and the flange, and a hole is formed on the other of the upper hinge and the flange, and the upper hinge is formed by fitting and screwing them together. The cooker according to claim 1, which is attached. 4. The cooking device according to claim 1, wherein the hanging plate portion of the hinge receiver is fixed to the front plate. 5. The side plate portion and the front plate of the inner box are joined by caulking, and the regulating means is provided with respect to the side end portion of the caulking portion.
The heating cooker according to claim 1, wherein the hinge receiver is configured by abutting a side end portion of the hanging plate portion.