JPH0438276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a sealing device for the entrance and exit of commercial freezers and refrigerators that uses a sliding door with a gasket on the inner periphery.

(b) Prior art and problems to be solved by the present invention A sealing device for the entrance of a commercial freezer or refrigerator using a conventional sliding door is a mounting member attached to the upper front edge of the entrance opening in the side panel of the refrigerator or freezer. Two rails were arranged in parallel in the front and back, and the left and right wheels were attached to the upper ends of the hanging brackets rotatably attached to the left and right sides of the upper end of the sliding door, respectively. By bending diagonally downward on the rear side in correspondence with the doorway, when the sliding door is completely closed, the sliding door is pressed against the side panel, and the gasket provided on the inner periphery of the door is brought into close contact with the side panel, so that the doorway can be closed by the sliding door. However, this type of rail requires bending the ends of the rail, so it is not easy to manufacture. Because the wheels and the two rails that support these wheels must be installed while aligning them with each other, it is time-consuming to install these parts, and the left and right wheels supported by the rails are attached to the bends of the rails. There were drawbacks such as the tendency for the wheels to come off easily.

(c) Means for Solving the Problems In view of the above-mentioned conventional drawbacks, the present invention makes it possible to easily manufacture rails and install equipment, and to improve the structure of sliding doors that run on rails. In order to prevent the wheels attached to the hanging bracket from coming off the rails and to ensure that the entrance and exit can be sealed, a cross section with the front rising piece slanted outward instead of the conventional rail with bent ends. A groove-shaped rail is used, and the rear rising piece of this rail is fixed to the upper front edge of the entrance/exit of the freezer or refrigerator, and the front rising piece is supported by hanging fittings attached to the upper left and right sides of the upper end of the sliding door, respectively. A roller is installed at the bottom of the left and right hanging brackets to keep the sliding door level, which runs on the underside of the rail. A seal is installed at the inner edge of the sliding door, and the front edge of the upper end of the front rising piece is installed at the center of the upper end. A movable vertical roller is provided protrudingly, and a depressed portion of the vertical roller is provided on the upper edge of the front rising piece to correspond to the vertical roller and in alignment with the center of the doorway, and an inverted conical shape is provided on the left and right outer sides of the lower edge of the sliding door, respectively. A roller or an engaging rod is provided, and engaging rods or conical rollers are provided on both left and right sides of the lower end of the entrance in correspondence with the inverted conical roller or engaging rod.

(d) Embodiments and effects Embodiments of the present invention will be explained below with reference to the drawings.

In the figure, 1 is a commercial freezer or refrigerator 2 with a length that is approximately twice the width of a sliding door 5 corresponding to the entrance 4 opened in the side panel 3, and with the front rising piece 6 facing outward. A rail with a groove-shaped cross section that is inclined at 45 degrees.
It is fixed to the upper front edge of the

Reference numerals 8 and 8 indicate hanging fittings attached to the left and right sides of the upper end of the sliding door 5, respectively.A shaft 9 is provided horizontally protruding from the upper end of each of these hanging fittings perpendicular to the rail 1, and a wheel 10 is provided at the tip of the shaft 9, respectively. The left and right wheels 10, 10 are supported by the front rising piece 6 tilted outward,
In addition, at the bottom of the left and right hanging fittings 8, 8, there are horizontal holding rollers 1 for the sliding door 5, respectively, corresponding to the lower surface of the rail 1.
1 and 11 are provided.

Reference numeral 12 denotes a gasket provided on the inner peripheral edge of the sliding door 5 in correspondence with the entrance/exit 4. In addition, as shown in FIG. It is used by attaching a floor shear packing 12' that tightly contacts the floor 13 to the lower edge of the floor.

Reference numeral 14 denotes a vertical roller that rolls on the front edge of the upper end of the front rising piece 6 protruding from the center of the upper end of the sliding door 5.

15 corresponds to the vertical roller 14 and the entrance/exit 4
16 is an inverted conical roller provided at the left end of the lower edge of the sliding door 5 by a bracket 17, 18 is an inverted conical roller. An engagement rod is provided on the left side of the lower end of the entrance/exit 4 in correspondence with the shaped roller 16.

19 is an engagement rod protruding from the right end of the lower edge of the sliding door 5; 20 is a mounting bracket 21 corresponding to the engagement rod 19;
This is a conical roller provided on the right side of the lower end of the entrance/exit 4, as shown in Figure 4 of the drawings.
The sliding door 5 is provided at a required distance from the front surface of the side panel 3 so that the sliding door 5 can pass between the side panel 3 and the side panel 3.

In addition, 22, 22 corresponds to the front side rising piece 6, and is attached to the left and right hanging fittings 8, 8, respectively, for stopping the wheel 10 from sliding down, which will be described later.

Reference numerals 23 and 23' designate buffer stoppers for determining the opening and closing positions of the sliding door 5, which are attached to the side panel 3 in correspondence with the left and right side edges of the sliding door 5, respectively; 24, a handle provided on the front surface of the sliding door 5; and 25, the back surface of the sliding door 5. This is a sliding door steadying piece attached to the lower end of one side of the door.

Since the present invention is configured as described above, the sliding door 5
When the sliding door 5 is not in a completely closed state, the vertical roller 14 protruding from the center of the upper end of the sliding door 5 is rotated 45 degrees outward from the rail 1, as shown by chain lines in Figures 1 and 2 of the drawings. Wheels 10, 10, which are in contact with the front edge of the upper end of the inclined front rising piece 6 and provided at the upper ends of the left and right hanging fittings 8, 8, respectively, are slightly moved from the center of the front rising piece 6, which is inclined outward by 45 degrees. The gasket 12 supported in the upper position and provided on the inner peripheral edge of the sliding door 5 is separated from the side panel 3, and the left and right horizontal holding rollers 11, 11 provided at the bottom of the left and right hanging fittings 8, 8, respectively, are connected to the rail 1. Since it is in contact with the lower surface, if the sliding door 5 in the open state is moved to the left in FIG.
11 rolls on each contact surface of the rail 1, and when the entrance/exit 4 is completely closed by the sliding door 5, the vertical roller 14 falls into the depressed part 15 provided at the upper edge of the front rising piece 6, and the left and right rollers When the shaped stoppers 22, 22 come into contact with the front rising piece 6, the left and right wheels 10, 10 supported slightly above the center of the front rising piece 6 are moved.
slides down the surface of the front rising piece 6 to a position slightly below the center, so the sliding door 5 is pressed toward the side panel 3 while descending, and at the same time, the sliding door 5
, the engaging rod 18 comes into contact with the upper part of the inverted conical roller 16 provided at the left end of the lower edge of the sliding door 5, and the lower part of the conical roller 20 provided at the right end of the lower end of the doorway. Since the engaging rod 19 comes into contact with
Since the lower right and left corners of the sliding door 5 are pressed toward the side panel 3, the gasket 12 provided on the inner peripheral edge of the sliding door 5 is in close contact with the side panel 3, so the entrance/exit 4 is sealed by the sliding door 5.

Also, if the sliding door 5 is moved slightly to the right in the closed state, the vertical roller 14 that has fallen into the depressed part 15 provided on the upper edge of the front rising piece 6 will come out from the depressed part 15. and comes into contact with the upper end front edge of the front rising piece 6, and along with this, the wheels 10,
10. The horizontal holding rollers 11, 11, etc. will return to their original positions, and the seal 12 provided on the inner peripheral edge of the sliding door 5 will separate from the side panel 3, so if you continue to move the sliding door 5 to the right, it will open easily. It is something that can be done.

In addition, as shown in FIG. 5 of the drawings, when the inside and outside of the freezer or refrigerator 2 are on the same floor 13, the sliding door 5
When the floor shear seal 12' is attached to the lower edge, the floor shear seal 12' is separated from the floor 13 except when the sliding door 5 is completely closed. When closed, it comes into close contact with the floor surface 13.

Moreover, the above-mentioned left and right roller-shaped stoppers 22, 2
2 is not necessarily provided, but if it is provided, the left and right roller-shaped stoppers 22, 22 will come into contact with the front rising piece 6 when the sliding door 5 is completely closed, so the stability of the sliding door 5 will be improved. It will improve.

Further, in the above embodiment, an inverted conical roller 16 is provided at the left end of the lower edge of the sliding door 5, and an engaging rod 18 is provided at the left side of the lower end of the doorway 4 in correspondence with this inverted conical roller 16. However, in some cases, an engaging rod is provided protruding from the left end of the lower edge of the sliding door 5, and a conical roller is provided on the left side of the lower end of the doorway 4 using a mounting bracket in correspondence with this engaging rod. In the above embodiment, an engaging rod 19 is provided protruding from the right end of the lower edge of the sliding door 5, and a conical shape is attached to the right side of the lower end of the doorway 4 by means of a mounting bracket 21 corresponding to the engaging rod 19. roller 2
0, but an inverted conical roller is provided at the right end of the lower edge of the sliding door 5, and an engaging rod is installed on the right side of the lower end of the doorway 4 in correspondence with this inverted conical roller so that the sliding door 5 can pass through. However, in any case, the lower left and right corners of the sliding door 5 can be pressed against the side panel 3 side.

(e) Effects of the Invention As described above, when the entrance/exit opening in the side panel of a freezer or refrigerator is completely closed by the sliding door, the vertical roller protruding from the center of the upper end of the sliding door is moved to the front rising piece of the rail. The wheel installed at the upper end of the hanging bracket of the sliding door, which is supported by the front rising piece of the rail that is tilted outward, is dropped into the depressed part provided on the upper edge, and the wheel installed at the upper end of the hanging bracket of the sliding door, which is supported by the front rising piece of the rail that is inclined outward, is slid down, and the wheels are placed on the left and right outer sides of the lower edge of the sliding door. By engaging the inverted conical rollers or engaging rods provided at the bottom of the doorway with the engaging rods or conical rollers provided on both left and right sides of the lower end of the doorway, the sliding door is pressed toward the side panel and the inner peripheral edge of the sliding door is pressed. Since the gasket provided is placed in close contact with the side panel, the entrance/exit is completely sealed by the sliding door.

Further, there is no risk that the wheels provided on the hanging fittings of the sliding door may come off the rails as in the conventional case, so the opening/closing operation of the sliding door and the sealing of the entrance/exit can be performed reliably.

Furthermore, the rail used in the device according to the present invention is easy to manufacture because it has a groove-shaped cross section with the front rising piece inclined outward, unlike the conventional rail with bent ends. Installation work to the freezer or refrigerator does not require precision; it can be installed extremely easily by simply fixing the rear rising piece to the side panel, and the other parts are also easy to install. Since the same parts can be used for the rails and other parts even if the sizes of the entrances and sliding doors are different, each part can be mass-produced easily and can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a front view of the device according to the present invention. FIG. 2 is a sectional view taken along line A-A shown in FIG. 1. FIG. 3 is an enlarged sectional view taken along the line B-B shown in FIG. 1. Fourth
The figure is a sectional view taken along the line CC shown in FIG. 1. Fifth
The figure is a sectional view showing how the floor shear packing is used. In the diagram, 1 is the rail. 2 is a freezer and a refrigerator. 3 is the side panel. 4 is the entrance. 5 is a sliding door. 6 is the front rising piece. 7 is the rear rising piece. 8 is a hanging metal fitting. 10 is the wheel. 11 is a horizontal holding roller. 12
is Patsukin. 14 is a vertical roller. 15 is the falling part. 16 is an inverted conical roller. 18 and 19 are engagement rods. 20 is a conical roller.

Claims (1)

[Claims] 1. The rear rising piece of the rail with a groove-shaped cross section with the front rising piece slanted outward is the freezer,
It is fixed to the upper front edge of the refrigerator doorway, and the front rising piece is equipped with wheels supported by hanging fittings attached to the upper left and right sides of the sliding door. A holding roller is provided respectively, a gasket is provided on the inner peripheral edge of the sliding door, and a vertical roller that rolls on the front edge of the upper end of the front rising piece is protruded from the center of the upper end. At the same time, a depressed part of a vertical roller is provided on the upper edge of the front rising piece, and an inverted conical roller or an engaging rod is provided on the left and right outer sides of the lower edge of the sliding door, respectively. A commercial freezer, which is provided with engaging rods or conical rollers on both left and right sides of the lower end of the entrance/exit;
A sealing device for the entrance and exit of the refrigerator.