JP2557708B2 - Cold storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial field of application The present invention relates to a low temperature refrigerator such as a prefabricated refrigerator.

2. Description of the Related Art JP-A-60-8296 and JP-B-61-22127 have a door that opens and closes a product inlet / outlet of a cold storage. In the former publication, an opening / closing door is closed by an opening / closing door rotatably fixed on one side by a hinge metal fitting, and the lower surface of the door moves while slidingly contacting the floor surface during the opening / closing operation of the door. Packing is provided.

On the other hand, in the latter publication, a low-temperature storage is provided with a laterally-opening type door body that opens and closes the entrance and exit, and this door body can be laterally moved via a suspension device on a rail that is installed on the outer surface of the front wall of the low-temperature storage The packing is disposed on the back surface (inside the refrigerator) of the door body.

Problems to be Solved by the Invention In the former technique described above, since the packing arranged on the lower surface of the door is always in sliding contact with the floor surface during the opening / closing operation of the door, the sliding contact of the packing becomes a resistance to the opening / closing operation of the door. It is difficult to carry out, and since the packing wears due to this sliding contact, there is a problem that when the door is opened and closed frequently, the packing wears quickly and the function as the packing cannot be achieved and the replacement time is shortened. Further, this packing cannot adjust the height of the opening for arranging the door, even if the height is slightly different.

On the other hand, in the latter technology, since the packing is arranged on the back surface of the door body, it is necessary to provide a packing contact to perform the function of the lower part of the door, and this part protrudes from the floor surface. As a result, there is a problem in that the carrier is tripped during the transportation of the article, or when the transportation cart is used, he / she has to go over the projecting portion of the cart, which makes it difficult to get in and out of the opening.

Therefore, the present invention provides a low-temperature refrigerator provided with a door having a packing arranged at the lower portion, the packing having a structure in which the mounting function of the packing can be easily changed corresponding to a slight difference in the height of the opening where the door is arranged. It is an issue.

[Structure of Invention]

Means for Solving the Problems A low temperature refrigerator of the present invention includes a storage chamber surrounded by a heat insulating wall, an opening for loading and unloading articles formed in one side wall of the heat insulating wall, and an opening for closing the opening. The door includes a heat insulating door, and the door includes a packing formed by folding back a soft plate material projecting from a lower end of the door, and the packing is formed by a folded portion and a part of which is in contact with the floor surface. , A mounting portion formed by mutually overlapping or abutting portions, and at least one of the overlapping soft plate members of the mounting portion has a vertically elongated hole, and the mounting portion is a plate-like pressing member and this pressing member. And a screw that penetrates the vertically long hole of the mounting portion, and is attached to the lower portion of the door.

Action Since the packing is a soft plate material, it can be folded back freely, so that the mounting part and the cavity can be easily formed, and by changing the folded state, the size of the cavity can be changed and the mounting part overlaps. The condition, that is, the position or the vertical dimension of the overlapping part, is changed by using the vertically long hole in the state where the screw for mounting the packing is loosened and hung from the door, and the packing has the size of the part protruding from the lower end of the door itself. It has an action as an adjusting unit for adjusting.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

Reference numeral 1 denotes a low-temperature refrigerator such as a prefabricated refrigerator in which a storage chamber is formed by a body having an upper wall and a side wall by combining a plurality of heat insulation panels 2, and one side wall (front side wall in this example) carries an article. -The opening 3 for carrying out is formed, and the heat insulating door 4 which closes this opening 3 openably and closably is arranged.

The heat insulating door 4 is suspended in a horizontally slidable state on a rail (not shown) provided above the opening 3 via a suspension device (not shown) (for details, see (Refer to the door opening / closing device in Japanese Utility Model Publication No. 61-22127). The door 4 is pushed toward the opening side by the distance A when the opening 3 is completely closed, and is dropped downward by the distance B. Reference numeral 5 is a cover that covers the rail and the suspension device. A flexible packing 10 is arranged at the peripheral edge of the inner surface of the door 4. The packing 10 is a bag-shaped first bag which is provided on the upper side and the left and right sides and is formed by extruding soft rubber.
Packing 11 and a second packing 12 arranged so as to project below the lower end of the door 4.

The second packing 12 is made of a soft material such as soft vinyl chloride or soft rubber, and a soft plate material 12B in which vertically elongated holes 13 for fixing are formed at appropriate intervals in the lower portion or the upper portion is folded back up and down to form a hollow shape. None, the mounting portion T is sandwiched between the plate-shaped pressing member 14 and the door 4, and the screw 15 is penetrated and fixed to at least the vertically long hole 13 of the mounting portion T and the opening of the pressing member 14.
When the vertically elongated hole 13 having a length of 2h is formed only in the lower portion of the plate member 12B, the height adjustment amount is h. The vertically elongated hole 13 is formed in the soft plate material 12B by loosening the screw 15
With the packing 12 hung from the door 4 adjusted to the height of the rail, the slight adjustment of the folding position of the soft plate is carried out in consideration of the adjustment state of the mounting height adjustment part of the door attached to the suspension device. This is for the purpose of acting as a state adjusting section and for enabling a slight increase / decrease adjustment of the contact area with the floor surface.

FIG. 4 shows another embodiment of the second packing, which has a fixing member 22 having a fixing groove 21 attached to the lower end of the door.
The mounting portion T of the packing 12 is inserted and held in the. The second packing 12 has a hollow cavity K, a portion of which is in contact with the floor surface, and a mounting portion T, which is attached to the lower portion of the door 4 and is in contact with or very close to each other. It is sufficient that the hollow plate K and the mounting part T are formed by folding back a soft plate material.

Reference numeral 18 denotes a guide rail that is attached over the entire width of the lower end of the heat-insulating door 4 on the outer surface of the refrigerator. The guide rail 18 has a protrusion 19 projecting downward from the lower end of the door. It is inclined at an angle of °.

According to the packing having the above-mentioned configuration (specifically, the second packing 12), the plate material 12B made of a soft material is folded back and forth to be formed into a hollow shape. It is only necessary to manufacture a plate material, and it is not necessary to previously form the hollow portion K and the mounting portion T by extrusion molding of a soft material, and a mold, a cooling mechanism and a manufacturing process for performing the extrusion molding are unnecessary. , Very cheap and easy to manufacture. Further, the cavity portion K and the mounting portion T are formed by folding back the plate material 12B,
Since the vertically elongated hole 13 is formed in at least one of the overlapping soft members of the attachment portion T, and the second packing 12 is attached to the door 4 by penetrating the screw 15 through the vertically elongated hole 13 and the retainer 14. The mounting height of the second packing 12 can be adjusted by loosening the screws 15 and changing the mounting and folding positions of the mounting portion T. And
Since the packing is a plate material made of a soft material, the flexibility of the formed hollow portion K is extremely good, and the packing is against the floor surface Y and the front wall due to the weight of the door when the door is fully closed. When it is pressed, it is easily deformed, its contact area is increased, and the adhesion to the wall surface at the lower end of the door is excellent.

〔The invention's effect〕

As described above in detail, according to the present invention, the packing that is attached so as to project downward from the lower end of the door is formed by folding back the soft plate material to make the folded-back portion a hollow portion, and the portions that are in contact with each other or close to each other are the mounting portions. Therefore, as compared with the packing in which the cavity and the mounting portion are formed in advance in the manufacturing stage, a mold and a complicated manufacturing process are not required, and the manufacturing is possible at a very low cost. In addition, the hollow portion and the mounting portion are formed by folding back the plate material, and a vertically elongated hole is formed in at least one of the overlapping soft members of the mounting portion, and a screw is penetrated through the vertically elongated hole and the presser. Since the packing is attached to the bottom of the door, the folded position of the packing, the overlapping position of the mounting part or the vertical dimension of the overlapping part is avoided while avoiding coming off the packing door while loosening the screw and suspending the packing. Since the size of the packing in the height direction can be changed by adjusting and changing, the fine adjustment of the mounting height of the packing and the contact area with the floor surface can be performed very easily.

[Brief description of drawings]

Each drawing shows one embodiment of the present invention, FIG. 1 is a perspective view showing a lower part of a door, FIG. 2 is a side view of a lower part of a door in a fully closed state, FIG. The figure is a perspective view showing another embodiment of packing. 1 ... Low temperature chamber, 3 ... Opening, 4 ... Insulation door, 12 ... Second
Packing, 12B ... plate material, K ... cavity part, T ... mounting part, 14 ... pressing part, 15 ... screw.

Claims (1)

(57) [Claims] 1. A low temperature warehouse comprising a storage chamber surrounded by a heat insulating wall, an opening for taking in and out articles formed in one side wall of the heat insulating wall, and a heat insulating door for opening and closing the opening. In the above, the door is provided with a packing formed by folding back a soft plate material protruding downward from the lower end thereof, and the packing overlaps with or abuts a cavity portion formed by the folded portion and a part of which is in contact with the floor surface. And a vertically elongated hole is formed in at least one of the overlapping soft plate materials of this mounting portion, and the mounting portion penetrates the plate-like retainer and the vertically elongated holes of the retainer and the retainer. A low temperature refrigerator, which is attached to the lower part of the door by a screw.