JPS6117333Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a sealing device for doors of refrigerators, freezers, buildings, etc., for example.

A gasket is attached to the inner periphery of this type of door to maintain sealing performance, but the conventional gasket 18 has a mounting portion 19 and a mounting portion 19, as shown in FIGS. 7 and 8, for example. It is composed of a hollow part 20 disposed on the upper side and a connecting part 21 that connects one side edge of the two to each other. It was fixed with screw 23. However, this makes the installation work of the gasket 18 extremely troublesome, and the installation work of the gasket 18 against the inner surface of the door is extremely troublesome.
There was a problem in that it took time and effort to adjust the set height of 8.

Therefore, conventionally, a gasket fitting groove is provided in the inner peripheral edge of the door, and a fitting part is provided in the gasket.
Recessed lines are provided on both sides of the fitting groove of the door, and convex lines are provided in parallel in the length direction on both sides of the fitting part of the gasket, so that the fitting part of the gasket is fitted into the fitting groove of the door. A door sealing device was proposed in which a convex strip on one side was fitted into a plurality of concave strips on the other side (see Japanese Utility Model Publication No. 1989-8922), but conventional gaskets were made of long gaskets made of magnetic material. The problem is that the pieces are embedded and have a very complicated shape, making it difficult to manufacture.

The purpose of this invention is that the gasket can be installed in the fitting groove of the door with one touch, which is very easy to work with, and that after installation, the so-called spring-back effect on both sides of the fitting part prevents the gasket from protruding. The strip can be strongly pushed into the groove, so the gasket is difficult to come off from the fitting groove of the door, maintaining excellent sealing performance for a long time, and the gasket has a simple shape, making it easy to manufacture. The purpose of this invention is to provide a door sealing device that can be used.

This invention will be explained below based on embodiments shown in the drawings.

In FIGS. 1 to 6, 1 is a refrigerator, 2 is a door, and a heat insulating material 4 made of foamable synthetic resin is filled between a pair of inner and outer aluminum plates 3.
In addition, a synthetic resin outlet facing member 5 is attached to the inner peripheral edge of the door 2. Reference numeral 6 denotes a gasket fitting groove having a substantially U-shaped cross section and provided on the surface facing the storage opening of the storage opening facing member 5, and four grooves 7 are formed on the inner surfaces of both side walls 6a, 6a in the length direction. They are arranged in parallel. Reference numeral 8 denotes a band-shaped gasket attached to the storage opening facing member 5 at the inner peripheral edge of the door 1, which consists of a pair of hollow gaskets having a substantially circular cross section and arranged in parallel with each other at a required interval in the length direction. The gasket 8 has a groove 11 surrounded by the hollow part 9 and the fitting part 10 on the inside of the gasket 8. It is formed. Further, on the outer surfaces of both side walls 10a, 10a of the fitting portion 10 of the gasket 8, four protrusions 12 are provided in parallel in the length direction. As shown in FIG. 3, the groove 11 of the gasket 8 has a shape that gradually widens from the bottom to the opening. The gasket 8 is generally made entirely of a single material such as synthetic resin or synthetic rubber, but the gasket 8
The pair of hollow parts 9 may be made of a soft material, and the fitting part 10 may be made of a harder material.

In order to attach such a gasket 8 to the door facing member 5 of the door 2, as shown in FIG. The fitting portions 10 are bent into contact with each other, and the fitting portions 10 are fitted into the fitting grooves 6 of the warehouse opening facing member 5. This allows the second
As shown in the drawings and FIG. 5, the four protrusions 12 on both sides of the fitting part 10 are fitted into the same number of grooves 7 on both sides of the fitting groove 6, respectively. In the fitting groove 6, the both side walls 10a, 10a of the fitting part 10 are pressed against the inner wall of the fitting groove 6 by the restoring force based on the elasticity of the gasket 8, thereby causing the gasket 8 to face the storage opening. It is firmly fixed to member 5 and therefore cannot be removed.

Hollow portions 9 on both sides of the gasket 8 serve as a heat insulating layer, and these hollow portions 9
When it comes into contact with the door support panel of the refrigerator 1, a hollow part is also formed by the groove 11 in the middle and the panel wall surface, which also plays the role of a heat insulating layer, and therefore the width of the heat insulating layer is is becoming wider. Further, since the groove 11 is provided, the fitting operation of the gasket 8 can be easily performed.

Next, when adjusting the set height of the gasket 8, for example, as shown in FIG. The same number of protrusions 12 on both sides of the fitting portion 10 of the gasket 8 are fitted into the grooves 7 to form a gap 13 at the bottom of the fitting groove 6. This increases the set height of the gasket 8 from the inner surface of the door 2. Note that a filler such as rubber or sponge may be inserted into this gap 13 in order to back up the gasket 8.

Note that the band-shaped gasket 8 is one or more gaskets combined in a rectangular shape and attached to the inner peripheral edge of the door 2.
The ends are usually joined together by welding or gluing. However, without performing such welding or gluing, the ends of the gaskets 8 are brought into contact with each other, and a spongy connection is made in which the end portions of the gaskets 8 are butted together in a concave groove 11 that is continuous with each other so as to span both ends. An elastic material (not shown) for sealing the portion may be fitted. This elastic material is the concave groove 11
The gasket 8 is held tightly by being sandwiched between both side walls, thereby maintaining the airtightness of the connection portion of the gasket 8.

In addition, in the above embodiment, the concave line 7 and the convex line 12
Although four pieces are provided each, the number is of course arbitrary, and it is sufficient that at least one protruding line 12 is provided for each plurality of grooved lines 7. Further, since the fitting of the concave line 7 and the convex line 12 is relative, contrary to the case of the above embodiment, the convex line 12 is formed on the inner surface of both side walls 6a, 6a of the fitting groove 6 of the door 2. In contrast, a plurality of grooves 7 may be provided on the outer surfaces of both side walls 10a, 10a of the fitting portion 10 of the gasket 8.

In addition, in the above embodiment, a case where the sealing device of this invention is applied to a refrigerator door is shown, but this invention can be similarly applied to other freezer doors or airtight doors of buildings, etc. It is. The gasket 8 has two hollow parts 9 and a fitting part 10 having a U-shaped cross section, and a groove 11 is shown formed in the middle of the hollow parts 9. Of course, a material having an arbitrary cross-sectional shape may be used.

As described above, in this invention, a gasket fitting groove 6 is provided on the inner peripheral edge of the door 2, and a gasket 8 is provided on the inner peripheral edge of the door 2.
A fitting part 10 is provided in the fitting part 10, and a plurality of grooves 7 are provided on either side walls 6a, 6a of the fitting groove 6 of the door 2 and both side walls 10a, 10a of the fitting part 10 of the gasket 8. They are provided in parallel in the length direction, and protrusions 12 are provided in the length direction on the other side, and the fitting part 10 of the gasket 8 is fitted into the fitting groove 6 of the door 2, and the protrusion on one side is fitted into the fitting groove 6 of the door 2. Article 1
2 is fitted into one of the plurality of grooves 7 on the other side, the fitting part 10
is approximately square in cross section, and hollow portions 9, 9 are provided outside the upper edges of both side walls 10a, 10a of the fitting portion 10, and the fitting portion 10 and the hollow portions 9, 9 form a The surrounded groove 11 has a shape that gradually widens from the bottom to the opening, so that when the fitting part 10 of the gasket 8 is fitted into the fitting groove 6, the groove 11 becomes narrower at the top. The fitting part side walls 10a, 10a and the hollow parts 9, 9 are bent inward,
The gasket 8 can be installed in the fitting groove 6 of the door 2 with one touch, and therefore the workability is very good.
Moreover, after installation, the so-called spring-back effect of both side walls of the fitting part allows the protruding line to be strongly pushed into the concave line, making it difficult for the gasket to come off from the groove of the fitting part of the door, resulting in excellent sealing for a long period of time. In addition to maintaining its properties, the gasket has a simple shape and can be manufactured easily.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a refrigerator, Figures 2 to 6 show examples of this invention, Figure 2 is a partially enlarged sectional view of a door equipped with a sealing device, and Figure 3 is a cross-sectional view of a gasket. The front view shows the state before it is attached to the door. Figure 4 is a partial enlarged cross-sectional view showing the state in which the gasket is attached to the door, Figure 5 is an enlarged cross-sectional view of the main part showing the state after installation, and Figure 6 is after installation with the gasket set height adjusted. FIG. Figures 7 and 8 show conventional examples; Figure 7 is a partially enlarged cross-sectional view showing the state in which the gasket is attached to the door, and Figure 8 is a partially enlarged cross-sectional view showing the state after installation. be. DESCRIPTION OF SYMBOLS 1... Refrigerator, 2... Door, 5... Door facing member, 6... Gasket fitting groove, 6a, 6a... Both side walls, 7... Concave strip, 8... Gasket, 9... Hollow part , 10... Fitting portion, 10a, 10a... Both side walls, 12... Convex strip.

Claims (1)

[Scope of utility model registration request] A gasket fitting groove 6 is provided in the inner peripheral edge of the door 2, a fitting part 10 is provided in the gasket 8, and both side walls 6a, 6a of the fitting groove 6 of the door 2 and both sides of the fitting part 10 of the gasket 8 are provided. A plurality of grooves 7 are provided in parallel in the length direction on one of the walls 10a, 10a, and protrusions 12 are provided on the other side in the length direction, and a fitting groove of the door is provided. In a door sealing device in which a fitting part 10 of a gasket 8 is fitted into a gasket 6, and a convex line 12 on one side is fitted into one of a plurality of concave lines 7 on the other side, the fitting part 10 has an omitted cross section. Hollow portions 9, 9 are provided outside the upper edges of both side walls 10a, 10a of the fitting portion 10, and are surrounded by the fitting portion 10 and the hollow portions 9, 9. The groove 11 has a shape that gradually widens from the bottom to the opening, and when the fitting part 10 of the gasket 8 is fitted into the fitting groove 6, the fitting part 11 narrows at the top. A door sealing device in which both side walls 10a, 10a and hollow parts 9, 9 are bent inward.