JPS631904Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a lid opening/closing device in which a rotary lid made of two heat insulating plates connected to each other by a hinge is installed on a box. The purpose is to prevent the lid from shifting and improve the sealing effect between the box and the lid.

The following is an explanation of the embodiment of the present invention with reference to the drawings: 1
is a storage warehouse consisting of an insulated box body 2 with an open top, and the box body includes an inner box 2a defining an interior 3 and an outer box 2b.
and an annular decorative frame 2c made of resin, which defines an opening 4 for storing and taking out products, and connects both the inner and outer boxes.
and a foamed heat insulating material 2d filled in the space formed by the inner and outer boxes and the decorative frame. 5A, 5B are a pair of heat insulating plates 6A, 6B
and a hinge 7 that interconnects the upper edges of the opposing surfaces of the heat insulating plates. Two sets of identical vertically movable lid bodies are arranged with decorative frames arranged symmetrically so that one side faces each other. 2c and closes the opening 4.
As shown in FIG. 2, each of the heat insulating plates is composed of a metal outer plate 6a having an opening/closing handle 6c at its edge, an inner plate 6b made of resin, and a heat insulating material 6e.
A flexible annular seal member 8 is held by a mounting base 6d formed around b. Each of the sealing members is a heat insulating plate 6A, 6B when the lid body 5A, 5B is closed,
6A, so that they are in contact with each other in order to seal between them. Reference numerals 9 and 9 indicate positioning members inserted into both ends of the gap 11 between the heat insulating plates 6A and 6B created by the hinge 7, and are located at a lower position than the hinge 7 as shown in FIG. As shown in FIG. 3, its thickness is smaller than the width of the gap 11, and as shown in FIG. The decorative frame 2c is attached to a pair of front and rear guides 10, which are fixed in advance to the decorative frame 2c, so as to face each other. The positioning member and the guide may be integrated.

According to such a configuration, the lids 5A, 5B can be installed at predetermined positions by the positioning members 9, 9, and the lids themselves can be prevented from moving in the left-right direction when the lids 5A, 5B are opened and closed. Movement is performed by positioning members 9, 9, and movement in the front and back direction is guided by guides 10, 1.
0, the box body 2 and lid bodies 5A, 5
In addition to improving the sealing effect with B, it is possible to prevent the lids 5A and 5B from falling from the box body 2.
Note that when the positioning members 9, 9 come into contact with one of the opposing surfaces of both the heat insulating plates 6A, 6B, the hinge 7, which is the pivot axis of the lids 5A, 5B, Since the lids 5A and 5B are located above the 5A and 5B, as the lids rotate upward, the positioning members 9 and 9 will be separated from the surface that they were in contact with. When the lids 5A, 5B are closed, as the lids rotate downward, one of the opposing surfaces comes into contact with the positioning members 9, 9, so that the movement of the lids 5A, 5B in the left-right direction can be restricted. In addition, it is possible to restrict the movement of the lid body 5A in the left and right direction due to the vibration shock caused by its own load, and therefore the positioning members 9, 9 help the opening and closing operations of the lid bodies 5A, 5B.
Opening/closing operations are easier than in the case where 9 is not provided.

As described above, the present invention provides a lid opening/closing device in which a lid consisting of two heat insulating plates interconnected by a hinge is installed on a box with an open top surface.
guides that span the front surface of the gap formed between the two heat insulating plates by a hinge and the front faces of the two heat insulating plates and face each other; A guide and a pair of guides are provided on the box body, and a positioning member extending from both guides to the gap is provided on both guides, so that the lid body can be installed in a predetermined position. In addition, it is possible to prevent the lid itself from moving in the front, back, left, and right directions when the lid is opened and closed, improving the sealing effect between the box and the lid, and preventing the lid from falling from the box. It can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the opening/closing device of the present lid, in which Fig. 1 is a perspective view of the box, Fig. 2 is a cross-sectional view taken along line A-A' in Fig. 1, and Fig. 3 is a cross-sectional view taken along line B-B' in Fig. 1. FIG. 4 is a plan view of the main part. 2...Box body, 5A, 5B...Lid body, 6A, 6B
...Insulating board, 7...Hinge, 9,9...Positioning member, 10,10...Guide, 11...Gap.

Claims (1)

[Scope of utility model registration request] In a lid opening/closing device in which a lid consisting of two heat insulating plates connected to each other by a hinge is installed on a box with an open top surface, the gap formed between the two heat insulating plates by the hinge is A guide that straddles the front surface and the front surface of both the heat insulating plates and faces each other, and a guide that straddles the rear face of the gap and the rear face of both the heat insulating plates and faces each other and forms a pair with the guide are provided on the box body. A lid opening/closing device characterized in that a positioning member is provided on both guides and extends from the guides to the gap.