JPS6325508Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to a door sealing device for a heat-insulating cabinet door, particularly for a double-door door, which is intended for use in, for example, the cabinet of a vending machine that handles cold products.

[Prior art and its problems]

In the vending machine mentioned above, the front door is generally configured as an inside/outside double door to prevent cold air from leaking inside.
Gaskets are attached to each side of the inner door along the rear peripheral edge, and when the door is closed, the gaskets are brought into close contact with the front peripheral edge of the cabinet body to provide a seal between the two. In addition, double-sided doors, in which the front door is divided into two, are widely used in large cabinets.

By the way, in the case where double doors are used as described above, it is inevitable that a slight gap remains between the mating surfaces of the left and right doors, and if this continues, cold air inside the refrigerator will leak through the gap. As a means to prevent this cold air from leaking, a gasket is additionally installed on either the left or right door that contacts the mating end surface of the other door, separate from the peripheral gasket, and this gasket seals the mating end surface between the doors. This has been implemented.

However, the conventional seal structure described above requires many parts including gasket mounting parts, which not only complicates the structure but also increases the number of assembly steps. There were drawbacks such as assembly dimensional errors, etc., which were added synergistically, resulting in unstable sealing performance.

[Purpose of invention]

This idea was developed in consideration of the above points, and its purpose was to create a sealing device for double-fold doors that has a simple structure, requires fewer parts and fewer assembly steps, and has high sealing performance against cold air and cutoff. It is about providing.

[Key points of the idea]

In order to achieve the above object, this invention makes the mating end surfaces of the left and right doors into parallel inclined surfaces that overlap each other, and one gasket is used to connect the mating end surfaces between the doors and the back side of the door corresponding to the end surfaces. A gasket with an L-shaped cross section that covers the area spanning the side edges is installed, and a gasket that faces this gasket and overlaps with the gasket in close contact with the back of the gasket at the other door position is installed. By doing so, it is possible to securely seal the mating end surfaces of the left and right doors and the door and the cabinet body with a small number of parts.

[Example of idea]

Figures 1 to 6 show an embodiment of this invention. First, in Figure 1, 1 is the heat-insulating structure of the cabinet body of the vending machine, 2 is the front outer door, and 3 is the inside of the cabinet body 1. An inner box 4 and 5 defining a product storage area are double-opening inner doors that are the object of this invention and are equipped on the front of the inner box 3.
It is attached so that it can be opened and closed in the direction of arrow A using the hinge 7 as a fulcrum. For such double doors 4, 5, a normal gasket 8, whose cross-sectional shape is shown in FIG. Based on this invention, gaskets 9 and 10 of a special shape, the cross-sections of which are shown in FIGS. 5 and 6, are attached to the mating end surfaces of the doors 4 and 5. Further, the mating end surfaces 4a, 5a of the doors 4, 5 are cut diagonally so as to form parallel inclined surfaces that overlap each other. Of the gaskets 9 and 10 described above, the gasket 9 has a substantially L-shaped cross-sectional shape, and has an inclined mating end surface 5a and the end surface 5a.
It is screwed to the door 5 via the mounting seat piece 9a so as to span between the edge on the back side corresponding to the . The other gasket 10 is gasket 9
A wedge-shaped tongue portion 10b that protrudes laterally from the gasket body in opposition to the gasket body is formed in a cross-sectional shape such that it overlaps front and back in a convoluted manner just behind the gasket 9 in the closed position of the door. It is screwed to the door 4 via the piece 10a.

When closing the double doors 4 and 5, the door 4 is closed first, and then the door 5 is closed. As a result, when the doors are closed, the inclined mating end surfaces 4a and 5a of the doors 4 and 5 overlap each other with the gasket 9 interposed therebetween, and the surface of the gasket 9 is aligned with the other door 4.
It is in close contact with the mating end surface 4a to seal that part. At the same time, the upper and lower ends of the gaskets 9 and 10 are brought into contact with and pressed against the upper and lower front surfaces of the inner box 3, respectively, with parts of the gaskets 9 and 10 overlapping front and back,
This part seals between the doors 4, 5 and the inner box 3. Moreover, as is clear from FIG. 2, the gasket 9 protrudes between the doors 4 and 5 and between the door 5 and the inner box 3, and one gasket 10 protrudes between the door 4 and the inner box and from the gasket 10. Since the tongue piece 10b is sandwiched between the gasket 9 and the inner box and comes into close contact with each other, there is no formation of even the slightest gap in this part, and leakage of cold air inside the refrigerator can be reliably prevented.

[Effect of idea]

As described above, according to this invention, the mating end surfaces of double-folding doors are made into parallel inclined surfaces that overlap each other, and one door has a cross section L spanning the mating end surface and the edge on the back side corresponding to this end surface. By installing a letter-shaped gasket on the other door, and a gasket on the other door that overlaps with the front of the cabinet body with a part of the gasket convoluted behind the gasket when the door is closed, the number of parts is reduced. To provide a door sealing device which can reliably seal the mating end faces of left and right doors and between each door and a cabinet main body, and which can achieve effects such as reducing assembly man-hours and making it easier to clean.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of this invention, with Figure 1 being a schematic cross-sectional plan view of the vending machine cabinet, Figure 2 being an enlarged detailed view of section P in Figure 1, and Figure 3 being a detailed view of section P in Figure 1. a and b are the back views of the left and right doors of the double door in Fig. 1, respectively, and Figs. 4, 5, and 6 are the arrow views in Fig. 3, respectively.
- and - are cross-sectional views of the gasket. DESCRIPTION OF SYMBOLS 1... Cabinet body, 3... Inner box of cabinet, 4, 5... Double door, 4a, 5a... Matching end surface of door, 8, 9, 10... Gasket.

Claims (1)

[Scope of utility model registration request] A door seal structure in which a gasket is attached to the periphery of the back side of a double door consisting of two left and right doors to seal between the door and a cabinet body having an insulating structure, and the mating end surfaces between the doors are sealed. Parallel inclined surfaces overlap each other, and one door is equipped with a gasket having an approximately L-shaped cross section spanning between the mating end surface and the edge on the back side corresponding to the end surface, and the other door is equipped with a closed door. A door sealing device for a heat insulating cabinet, characterized in that a gasket is installed, which is in close contact with the gasket at a position, and a part of the gasket is entangled behind the gasket and overlaps with the cabinet body.