JPS6322424Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing door suitable for, for example, a toaster oven.

For example, the opening/closing door of a toaster oven is generally configured such that a front plate and a back plate are integrally assembled with a space between them, and this is pivotally supported on the main body of the toaster.

However, this type of conventional opening/closing door was supported by two shafts installed spaced apart and facing each other on the same axis, so it was difficult to locate the two shafts, and the mounting location of the shafts was difficult. There was a problem that even if the door was slightly deformed, the coaxiality of the two shafts would be impaired, making it difficult to open and close the door smoothly.

The present invention was developed in consideration of these circumstances, and its purpose is to make it easy to assemble, maintain smooth opening and closing even after long-term use, and prevent rattling. The purpose of the present invention is to provide a door that can prevent opening and closing.

That is, the opening/closing door according to the present invention bends the peripheral edge of the front plate inward, bends the peripheral edge of the back plate outward, and overlaps both bent portions with the front plate on the outside.
In addition, each bent part is provided with an approximately L-shaped opening notch that opens at the bent edge at two locations facing each other. By overlapping the deep part and the deep part of the opening notch on the back plate side, a pair of circular holes facing each other are formed, and one pivot shaft is inserted into both circular holes. It is constructed so that both shaft ends are held in a fixed position.

Hereinafter, the present invention will be explained in detail based on the embodiments shown in the figures.

In this embodiment, the present invention is applied to an opening/closing door of a toaster oven.

FIG. 1 is an external view of the toaster oven, and FIG. 2 is a cross-sectional view as seen from the side. An opening/closing door 2 is provided on the front side of the outer case 1. This opening/closing door 2 has a fixed piece 3 fixed at its lower edge inside the outer case 1,
3 via a pivot shaft 4, and by grasping the handle 5 and pulling it toward you, the inlet/outlet for the ceramic material will be opened. In FIG. 1, 6 is a timer setting knob, 7 is a heat amount switching knob, and 8 is a reflector raising/lowering knob arranged on the front panel of the outer case 1. Further, reference numeral 9 in FIG. 2 is a reflector plate disposed within the incubation chamber, and this reflector plate 9 is moved up and down by operating the reflector lift knob 8. A straight pipe electric heating element 10 is attached to the lower surface of the reflector 9 and the lower part of the incubation chamber, and a grid 11 on which the material to be incubated is placed is arranged between the upper and lower heating elements. . This gridiron 11 can be taken out to the outside through the inlet/outlet for the roasted material.

As shown in FIG. 3, the opening and closing door 2 has a structure in which a glass plate 14 is sandwiched between a square frame-shaped front panel 12 and a back panel 13, a handle 5 is attached to the upper part of the front panel 12, and the door is supported on a single pivot shaft 4 so as to be freely rotatable.

The peripheral edge of the surface plate 12 is bent inward, and L-shaped opening notches 16 are provided at the lower positions of the left and right bent portions 15, which open at the bent edges.

Further, the back plate 13 has a peripheral edge bent outward, and an L-shaped opening notch 18 is provided at a lower position of the left and right bent portions 17, which also opens at the bent edge. Further, a protrusion 20 that bulges inward is provided at the center of the lower bent portion 19.

Therefore, the front plate 12 and the back plate 13 are integrated by overlapping each other's bent portions with the front plate 12 on the outside, and in this state, as shown in FIG. 4B, the opening notches 16, 18 The deep parts of the holes overlap each other to form a circular hole 21. Then, the pivot shaft 4 comes to be inserted into this circular hole 21. Further, the pivot shaft 4 has an intermediate portion supported by a protrusion 20,
Curvature deformation is prevented.

On the other hand, the pivot shaft 4 has large-diameter bulges 22, 22 near both ends, and these bulges are formed, for example, by applying pressure in the axial direction.

Further, the fixing pieces 3, 3 are fixed to the left and right side plates 23, 23 of the inner case fixed inside the outer case 1.
It is attached as shown in Figure 5. The inner case constitutes a culture chamber, and the left and right side plates 23,
23 has a peripheral edge bent outward. The front bent portion 24 is provided with a locking tongue 25 and an insertion groove 26 for locking the fixing piece 3, and the fixing piece 3 is attached in the following steps. That is, the width of the insertion groove 26 is set to allow the fixing piece 3 to be inserted therethrough, and the locking tongue piece 25 located at the opening edge of the insertion groove 26 is initially bent as shown in FIG. 6A. Therefore, as shown in FIG. 2B, the intermediate portion of the fixing piece 3 is inserted into the insertion groove 26, and one end of the fixing piece 3 is fixed to the outer surface of the side plate 23 with a screw or stud 27. Next, after inserting the end of the pivot shaft 4 from the inside of the fixing piece 3 into the hole 28 previously provided on the other end side of the fixing piece 3, the locking tongue piece 25 is inserted as shown in FIG. Stretch it out and lock the fixing piece 3 in the insertion groove 26.

According to the above configuration, the door 2 is supported by one pivot shaft 4, so that the door can be opened and closed smoothly over a long period of time. Further, the circular hole 21 through which the pivot shaft 4 is inserted is formed by overlapping the opening notch 16 on the front plate 12 side and the opening notch 18 on the back plate 13 side, so when installing the pivot shaft 4, In other words, it is only necessary to insert the pivot shaft 4 at an intermediate position from the opening side of each of the opening notches 16 and 18, making assembly extremely easy. and,
The pivot shaft side of the opening/closing door 2 assembled in this way engages with the pivot shaft 4 at the back of the opening notches 16 and 17, so that the surface plate 12 of the opening/closing door 21
direction away from the back plate 13 (arrow A in Fig. 4B)
) and the movement of the back plate 13 in the direction away from the front plate 12 (indicated by arrow B in FIG. , 17a are caught, and the pivot shaft 21 is used as a stopper to prevent this. For this reason,
The front plate 12 and the back plate 13 open back and forth on the side of the pivot shaft 4, preventing a large gap from being formed between the circular hole 21 and the pivot shaft 4, so that the opening/closing door 21 can be pivoted. Shaking with respect to the shaft 4 can be prevented for a long period of time. Further, the fixing pieces 3, 3 supporting both ends of the pivot shaft 4 can be secured to the side plate by screwing or riveting one end to the side plate 23 and extending the locking tongue piece 25 after installing the opening/closing door 2. 23, the installation is extremely simple.

As described above based on the embodiments, the opening/closing door according to the present invention bends the peripheral edge of the front plate inward, bends the peripheral edge of the back plate outward, and folds both bent portions into the front side. They are stacked with the face plates on the outside, and each bent portion is provided with approximately L-shaped opening notches that open at the bent edges at two locations facing each other, so that the doors are aligned in the vertical direction when the door is closed. A pair of circular holes facing each other are formed by overlapping the deep part of the opening notch on the front plate side and the deep part of the opening notch on the back plate side, and a pair of circular holes are formed in both circular holes. Since it is configured to insert the pivot shaft of the book and hold both shaft ends in a fixed position, it is easy to assemble without the hassle of inserting the pivot shaft into two holes from the shaft end. can. Also, since both sides of the opening/closing door are supported by one pivot shaft, the coaxiality of the shafts on both sides may be impaired and smooth opening/closing may not be possible, unlike when two shafts are used. It can be opened and closed smoothly over a long period of time without any problems. Furthermore, the opening notch is L-shaped,
Since the pivot shaft is passed through the circular hole formed between the inner parts, the pivot shaft can prevent the front and back panels from opening, which prevents the opening/closing door from shaking against the pivot shaft. This can be prevented over the long term.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is an external perspective view, Fig. 2 is a sectional view seen from the side,
Figure 3 is an exploded perspective view of the opening/closing door, Figure 4A is a side view showing the relationship between the opening notch on the front plate side and the opening notch on the back plate side, and Figure B shows the overlap of both opening notches. Fig. 5 is a side view showing the state, Fig. 5 is a perspective view showing the relationship between the left and right side plates and the pivot shaft, Fig. 6 A is a perspective view showing the shape of the fixing piece attachment part, and Fig. 6 B and C are the attachment of the fixing piece. It is a side view which shows a process sequentially. 2... Opening/closing door, 3... Fixed piece, 4... Pivot shaft,
12...Front plate, 13...Back plate, 16, 18...
...Opening notch, 21...Circular hole.

Claims (1)

[Claims for Utility Model Registration] (1) A surface plate whose peripheral edge is bent inward, and a surface plate formed by bending the peripheral edge outward and overlapping the bent portion from the inside with the bent portion of the surface plate. The integrated back plate, the front plate, and the back plate have openings at two opposing bends at each bent edge to form an approximately L-shape. a pair of opening cutouts whose deep parts along the direction overlap each other to form a circular hole; and the above-mentioned 1.
An opening/closing door comprising a pivot shaft passing through a pair of circular holes and having both ends held in a fixed position. (2) The opening/closing door according to claim 1, wherein the bent portion of the back plate has a protrusion that supports an intermediate portion of the pivot shaft.