JP3220621B2 - Constant temperature door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
The present invention relates to a door of a thermostatic oven suitable for use as a door of a refrigerator.

[0002]

2. Description of the Related Art A door of a conventional thermostatic oven, for example, a door of a refrigerator is constructed as shown in FIGS. 4 to 7. In FIG. 4, reference numeral 1 denotes a back material of a resin door, and 2 denotes a back material. 1, a packing 3, a resin door body 4, a door frame 4 formed on the side surface of the door body 3, a door frame 4a formed on the left and right side surfaces of the door body 3, 4b Is a door upper and lower frame formed on the upper and lower surfaces of the door body 3, 5 is a sash formed of an L-shaped cross-section plate to be attached to the door side frame 4a, and 7 is a packing receiver integrally formed on the door upper and lower side 4b. .

[0003] In the above configuration, since it is difficult to form the packing receiving portion 7 of the door frame 4 of the door body 3 due to the mold structure, the packing receiving portion 7 directly receives the packing only on the door upper and lower frames 4b. And a sash 5 separate from the door body 3 is attached to the door side frame 4a, and then the sash 5 receives the packing.

FIG. 5 is a cross-sectional view of a main part in the vicinity of the door upper and lower frame 4b. In FIG. 5, reference numeral 6 denotes a foam filler filled inside the door, 8 denotes a locking recess formed in the packing 2, 9 Reference numeral denotes an edge formed on the outer peripheral edge of the backing material 1, reference numeral 10 denotes a convex portion whose edge 9 is bent, and reference numeral 11 denotes a hook formed on a packing for hooking the edge 9. Then, the convex portion 10 is aligned with the retaining concave portion 8, and further, the retaining portion 11 is provided inside the convex portion 10.
, The packing 2 is attached to the edge 9 of the backing material 1.
Fixed to

FIG. 6 is a sectional view showing the vicinity of the door side frame 4a.
In FIG. 6, reference numeral 12 denotes a plurality of ribs integrally formed on the inner surface side of the door body 3 and the door side frame 4a, and reference numeral 13 denotes a rib 12 between the rib 12 and the door side frame 4a for inserting the sash 5. An insertion groove formed on the side, 14 is a projection projecting from the door side frame 4a into the insertion groove 13, and 15 is a sash 5 for receiving the projection 14.
Is a fixing recess for fixing formed in the boss. The structure for attaching the packing 2 to the back material 1 is the same as that shown in FIG. 5, and a description thereof will be omitted.

Then, when the side of the sash 5 provided with the recess 15 is inserted into the insertion groove 13, the projection 14 is fitted into the recess 15 and the sash 5 is fixed to the door body 1.

[0007] In addition, the door of the thermostatic chamber is assembled by the backing material 1
After fixing the packing 2 to the outer peripheral edge of the door and fixing the sash 5 to the door left and right door side frames 4a, the packing 2 fixed to the back member 1 is placed on the sash 5 and the packing receiver 7 of the door body 3 and the whole is fixed. I do. Next, the space formed by the backing material 1 and the door body 3 is filled with a foamed heat insulating material, whereby the whole is integrated to constitute a door of the constant temperature storage.

FIG. 7 is an exploded view of the door of the above constant temperature chamber. In FIG. 7, X is the width of a portion of the sash 5 to be inserted into the insertion groove 13, Y is the width of the insertion groove 13, and In order to facilitate the above, the width X of the insertion groove 13 is set to be larger than the thickness Y of the sash 5 (X> Y).

[0009]

In the case of a door of a thermostatic oven having the above-described structure, the width X of the insertion groove 13 is larger than the width Y of the sash 5, as shown in the exploded view of FIG.
There is a slight gap between the insertion groove 13 and the sash 5, and there is a disadvantage that the foamed heat insulating material 6 leaks out of the door from the gap when the foamed heat insulating material 6 is filled after the door is assembled. .

[0010] An object of the present invention is to provide a door of a constant-temperature refrigerator with a simple structure in which the foamed heat insulating material does not leak out of the door.

[0011]

According to the present invention, a door of a thermostatic oven is provided.
In order to achieve the above object, the invention according to claim 1 provides a door body formed by integrally molding a door outer surface plate and a door frame, and a door body for reinforcing the door outer surface plate and the door frame. A plurality of ribs integrally formed, a back material covering the back surface of the door body, a packing made of an elastic member and attached to an edge of the back material, and a foam filling a space formed by the door body and the back material In a door of a thermostatic oven made of a heat insulating material, a protrusion is formed on the packing, a packing fin is formed on an outer edge side from the protrusion, and a contact portion for contacting the packing fin is formed on the door. frame
On the rib side of the connecting portion between the door frame and the rib, an insertion groove formed to be narrower than the width of the protruding portion is formed,
Wherein the protruding portion is inserted into the insertion groove of the rib side to fix the packing in the door body, to place the side of the surface protrusion was formed of the packing facing the foam insulation, the package
The fin and the contact portion prevent leakage of the foamed heat insulating material .

According to a second aspect of the present invention, in addition to the first aspect, a hooking projection formed in the insertion groove for hooking the projection is provided. And a catching recess formed in the protruding portion for receiving the portion .

[0013]

The door of the thermostatic chamber of the present invention has the above structure.
According to the first aspect of the present invention, when the protrusion formed on the packing is inserted into the insertion groove, the protrusion is formed of an elastic member, so that the protrusion is deformed and fixed to the insertion groove without any gap. And pa
When the packing is attached to the door body,
The packing fins that make up
Then, the door is formed by covering the insertion groove.

According to the second aspect of the present invention, when the projection is inserted into the insertion groove, the projection formed in the insertion groove is fitted into the engaging recess formed in the projection, and the projection is inserted. It is fixed in the groove .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a door for a thermostatic chamber according to the present invention will be described below in detail with reference to FIGS. The same parts as those in the above-described conventional example are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is an exploded perspective view of an embodiment of a door of a thermostatic oven according to the present invention.
16 is a packing mounted on the outer peripheral edge of the backing material 1;
Is a door body made of resin, 18a is a door side frame formed on the left and right side surfaces of the door body 17, and 18b is a door upper and lower frame provided with the packing receiving portion 7.

FIG. 2 is a sectional view of a main part near the door side frame 18a. In FIG. 2, 16a is a packing fin formed on the outer peripheral edge of the packing 16, 19 is a protrusion integrally formed with the packing 16, and 19a is elastic. Protrusion 1 to increase the
9, a hollow portion 19b is formed at the lower end of the projection 19, and is a latching recess formed at the lower end of the projection 19. The projection 19 has a wider central portion, and the latching recess 19b is narrower than the central portion.
Further, the distal end is formed so that the width gradually decreases from the central portion toward the distal end.

Reference numeral 20 denotes a rib integrally formed inside the door body 17 and the door side frame 18a, 21 denotes an insertion groove formed in the rib 20 near the door side frame 18a, and 22 denotes an insertion groove formed by the projection 19. A locking projection 23 projecting from the door-side frame 18a toward the insertion groove 21 to prevent it from dropping from the door 21;
Is a contact portion formed on the door side frame 18a and contacted by the packing fin 16a. The structure of the mounting portion of the packing 16 to the back material 1 is omitted because it is the same as that shown in the conventional example.

FIG. 3 is an exploded view of the vicinity of the door side frame 18a of the door. In FIG. 3, W is the width of the insertion groove 21 formed on the rib 20 side of the connection portion between the door side frame 18a and the rib 20. Z is the width of the central portion of the protrusion 19 formed on the packing 16. Note that the width Z of the central portion of the protruding portion 19 is formed wider than the width W of the insertion groove 21 (Z> W).

The operation of the above-mentioned projection 19 will be described.
As shown by the dashed line in FIG. 3, with the packing 16 mounted on the outer periphery of the backing material 1, the protrusion 1 formed on the packing 16 is formed.
9 is inserted into the insertion groove 21 formed in the door main body 17, the protrusion 19 made of an elastic member is deformed and easily inserted.
Is inserted into. Further, the protruding portion 19 is tightly attached to the insertion groove 21 and the door-side frame 18a without any gap by elastic force, thereby preventing the foamed heat insulating material 6 from leaking to the outside.

The protrusion 19 is easily positioned by engaging a locking protrusion 22 formed on the door side frame 18a with a locking recess 19b formed on the protrusion 19. In addition, the protrusion 19 is prevented from dropping out of the insertion groove 21. Further, the packing fin 16a comes into contact with the contact portion 23, and the insertion groove 21 is covered by the packing fin 16a so as not to be seen from the outer surface.

If the interval between the ribs 20 is large, the packing 16 may be deformed due to the pressure at the time of filling the foamed heat insulating material, and the foamed heat insulating material may leak out. The leakage of the foamed heat insulating material can be prevented by sufficiently shortening the interval at which the heat insulating material is provided, or by increasing the thickness of the protruding portion 22 so as not to be easily deformed.

[0023]

According to the present invention, the door of the thermostatic chamber according to the present invention has the above-mentioned structure. Therefore, the invention according to the first aspect is characterized in that the insertion groove is formed narrower than the width of the protruding portion, and the insertion groove is formed with the rib and the door. Since the protrusion is inserted into the insertion groove because it is formed on the rib side of the connection part with the frame, the foam insulation leaks out of the door because the protrusion contacts the insertion groove and the door frame without gaps Can be prevented. Furthermore, since it is composed only of the door body, the backing material and the packing, the parts of the door of the constant temperature chamber are reduced, so that the assembling process can be simplified and the manufacturing cost can be reduced. In addition, the protruding part
Packing fins formed on the outer edge of the packing
And a contact portion formed on the frame portion for contacting the fins.
As a result, the packing fins come into contact with the
Since the insertion groove with the packing can be hidden,
High quality can be obtained and also when filling foam insulation
Even if a gap is formed between the insertion groove and the projection,
Catch leaking foam insulation with packing fins
This prevents foam insulation from leaking out of the door.
Can be.

According to a second aspect of the present invention, there is provided a projection formed in the insertion groove for fixing the projection, and a latching recess formed in the projection to receive the latching projection. ,
By fitting the latching projections on the door frame into the latching recesses on the projections, positioning can be facilitated, and the packing can be displaced in the mounting position and the packing can be dropped from the insertion groove. Can be prevented.

[0025]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of a door of a thermostat according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of a door side frame of a door of a thermostatic oven according to the present invention.

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is an exploded perspective view of a door of a conventional thermostatic oven.

FIG. 5 is an enlarged sectional view of a main part of a packing receiving portion of a door of a conventional thermostatic oven.

FIG. 6 is a cross-sectional view of a main part of a door side frame of a door of a conventional thermostatic oven.

FIG. 7 is an exploded view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Backing material 6 Foam insulation material 16 Packing 16a Packing fin 17 Door body 18a Door side frame 18b Door vertical frame 19 Projection 19b Hook recess 21 Insert groove 22 Hook protrusion 23 Abutment

Claims (2)

(57) [Claims] A door body integrally formed with a door outer panel and a door frame; a plurality of ribs integrally formed on the door body to reinforce the door outer panel and the door frame; A back material covering the back of the back, a packing made of an elastic member and attached to an edge of the back material, and a door of a thermostatic oven comprising a foam heat insulating material filling a space formed by the door body and the back material, A protrusion is formed on the packing, and the packing is
While forming a fin, the packing fin is abutted.
The contact portion is formed on the door frame, and an insertion groove formed to be narrower than the width of the protruding portion is formed on the rib side of the connecting portion between the door frame and the rib, and the protruding portion is inserted on the rib side. The packing is fixed to the door body by inserting it into the groove, and the surface on the side on which the protrusion of the packing is formed faces the foamed heat insulating material, and the packing fin and the abutting portion form the foamed heat insulating material. of
A door of a thermostatic oven characterized by preventing leakage . 2. A locking projection formed on the insertion groove for locking the projection, and a locking recess formed on the projection for receiving the locking projection. The door of the thermostatic oven according to claim 1, wherein