JP2846775B2 - Showcase door device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device for opening and closing an opening formed in a top wall of a showcase.

[0002]

2. Description of the Related Art Conventionally, a showcase of this type, particularly a frozen showcase for displaying and storing products such as ice cream, is disclosed in, for example, Japanese Utility Model Laid-Open No. 55-31509 (F25D).
As shown in FIG. 23/02), a low-sloping opening is formed on the upper surface of the main body of the heat-insulating structure, and the opening is formed by a sliding door-type transparent glass door slidably mounted on rails on both sides of the opening. It is openably closed.

[0003] The door is lifted backward to open the opening, is stored within the space between the cover, which is referred to as an advertising part, and the upper surface of the main body, and when the opening is closed, it slides down due to its inclination and moves forward. I do. Further, a seal member for sealing with the main body is attached to the rear end of the door, and has a structure for preventing cool air from leaking from the inside of the refrigerator.

[0004]

By the way, the door can be opened more easily as the friction between the door and the rail is smaller, and the door is closed more quickly as the inclination of the opening is steeper. Therefore, in the above publication, a roller is provided on the side of the door to slide on the rail,
The door is lightened by steepening the upper surface of the main body.

[0005] However, if the movement of the door becomes lighter, the speed at which the door drops and moves when the opening is closed by the door becomes faster. become. By the way, the door is designed in advance to stop in a state of contact with the front edge of the opening, but due to the light movement of the door, the impact at the time of closing causes the front edge of the door to open. There was an accident in which the door fell off over the leading edge.

[0006] The present invention has been made to solve the above-mentioned conventional technical problem, and an object of the present invention is to provide a door device of a showcase that can reliably prevent the door from falling off.

[0007]

According to the present invention, there is provided a door apparatus having a sloped opening in a top wall, and the opening is opened and closed by a sliding door. The stopper 3 is provided at the end of the door 3 in the opening direction, and the stopper 33 is connected to the edge (rise side) 24 of the top wall 6 when the door 3 closes the opening 2. It is characterized in that it is separated and the edge of the door 3 in the closing direction comes into contact with the edge (rise side) 24 of the top wall 6 in a state of going over the edge of the opening 2.

In the door device according to the second aspect of the present invention, the cover 21 is provided above the top wall 6, and the door 3 is stored between the top wall 6 and the cover 21 when the opening 2 is opened. At the same time, a gap larger than at least the dimension from the upper surface of the door 3 to the lower end of the stopper 33 is formed between the edge (rising side) 24 of the top wall 6 and the cover 21.

Further, the door device according to the third aspect of the present invention,
The present invention is applied to a showcase 1 which has an opening 2 inclined at an angle, and the opening 2 is openably and closably closed by a sliding door type door 3. And a connecting member (chain) 35 for connecting the first and second members to each other, and the connecting member (chain) 35 is dimensioned to be relaxed with the door 3 closing the opening 2.

[0010]

According to the door device of the first aspect of the present invention, when the door 3 closes the opening 2, the stopper 33 is separated from the edge (rise side) 24 of the top wall 6, so that the door 3 Each time it is closed, the top wall (rise side 24) and stopper 3
Unnecessary impact is not applied to the ceiling wall (rising side 24) and the stopper 33 due to the contact of the stopper 3. On the other hand, when the door 3 falls and moves vigorously and the end in the closing direction of the door 3 tries to get over the opening 2, the stopper 33 is moved to the top wall 6.
Since the door 3 is in contact with the edge (rising side) 24, the door 3 cannot go over the opening 2, thereby preventing the door 3 from falling off.

According to the door device of the second aspect of the present invention, at least the upper part of the door 3 to the lower end of the stopper 33 is provided between the edge portion (rising side) 24 of the top wall 6 and the cover 21 provided thereabove. Since the interval larger than the size is formed, the stopper 33 gets over the edge portion (rise side) 24 of the ceiling wall 6 by lifting the door from the opening 2,
The door 3 can be easily removed.

Furthermore, according to the door device of the invention of claim 3,
When the door 3 closes the opening 2, the connecting member (chain) 35 is loosened. Therefore, each time the door 3 is closed, the connecting member (chain) 35 is tensioned and the rear portion of the top wall 6 and the connecting member ( Unnecessary acting force is not applied to the chain (35). On the other hand, even if the door 3 falls and moves vigorously and the end in the closing direction of the door 3 gets over the opening 2, the door 3 is connected to the rear part of the top wall 6 by the connecting member (chain) 35. 3 is prevented from falling off.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an enlarged vertical sectional side view of an opening 2 of a showcase 1 to which the door device of the present invention is applied, FIG. 2 is a vertical sectional side view of the showcase 1, and FIG. The showcase 1 is composed of a heat-insulating box 5 constituting a storage room 4 in which goods such as ice cream are displayed and stored. Opening 2 is formed. A front glass 7 is attached to a front upper edge of the heat insulating box 5.
At the upper end, a handrail 8 that borders the front edge of the opening 2 is attached.

The heat-insulating box 5 comprises an outer box 9 and an inner box 1 made of a steel plate.
It is configured by foam-filling the heat insulating material 12 between the two. An evaporating pipe 13 of a refrigeration cycle is attached to the heat insulating material 12 side of the inner box 11 in a thermally conductive manner.
Auxiliary evaporator 14 is attached to a position that will be the lower surface of. The inside of the storage room 4 is cooled to a predetermined freezing temperature by the evaporation pipe 13 and the auxiliary evaporator 14. Insulated box 5
A machine room 16 is formed below the refrigeration cycle, and a compressor 17 and a condenser 18 constituting the refrigeration cycle are installed therein.

At the upper part of the heat insulating box 5, rails 19, which are located on both sides of the opening 2 and which are inclined forward and low as a whole from above the ceiling wall 6 to the handrail 8, are mounted on the rail 19. Door 3 made of plate-shaped transparent glass
Are slidably mounted. A rail 19 is located above the top wall 6.
A translucent resin cover 21 is mounted on the upper side, and a fluorescent lamp 22 for illumination is arranged in the cover 21. The front surface of the top wall 6 is constituted by a front plate 23 made of a hard resin. From the upper end of the front plate 23, as shown in FIG. The rising piece 24 is formed upright. The front edge 21A of the cover 21 extends to the upper front of the rising piece 24,
And a predetermined distance above it.

The door 3 is made of a transparent glass 2 as shown in FIG.
6 and a frame 27 bordering the periphery of the
A handle 28 is attached to the upper surface of the front side of the frame 27 in the closing direction of the door 3. As shown in FIG. 1, a cushion member 29 is provided on the front side of the front side of the frame 27 to reduce the impact when the rear side of the handrail 8 comes into contact. Slide pieces 31, 31 made of a small amount of oil-impregnated nylon are attached. Further, a cushion member 32 that hangs down in the left-right direction is attached to the lower surface of the rear side of the frame 27 in the opening direction of the door 3, and the rear side of the cushion member 32 is positioned on both sides of the rear side of the rear side of the frame 27. Hard resin stoppers 33, 33 projecting downward are screwed.

The door 3 is connected to the slide pieces 31, 31.
1 is placed on the rail 19 in a state of being inclined forward and low at a low level while being in contact with the upper surface of the rail 19 as shown in FIG. When the door 3 closes the opening 2 as shown in FIG. 1, the cushion member 29 of the frame 27 abuts against the rear surface of the handrail 8 by its own weight, and the rear edge of the frame 27 is the front edge of the cover 21. 21A
While being located on the lower side, the cushion member 32 is in contact with the rear surface of the rising piece 24, and the stopper 33 is located behind and separated from the rising piece 24. The contact between the cushion members 29 and 32 prevents the cool air from leaking from the opening 2. In addition, an interval at least larger than the dimension from the upper surface of the frame 27 of the door 3 to the lower end of the stopper 33 is formed between the rising piece 24 and the front edge 21A of the cover 21.

When the opening 2 is to be opened, the door 3 is pushed up with the handle 28 of the door 3 and moved upward and backward along the rail 19. At this time, since the frictional resistance of the slide pieces 31 is small, the door 3 can be easily opened. By this opening operation, the door 3 is stored between the cover 21 and the top wall 6, and when the front side of the frame 27 approaches the top wall 6, the opening 2 is fully opened.

Next, when the opening 2 is closed by the door 3 from that state, the door 3 is dropped by its own weight due to the inclination of the rail 29 by releasing the handle 28 and the cover 21.
Move forward from below. Eventually, the cushion member 29 comes into contact with the rear surface of the handrail 8 to reduce the impact at the time of closing, and the cushion member 32 also rises
4 to seal cold air leakage from the opening 24.
At this time, since the stopper 33 is separated from the rising piece 24 and does not abut, the rising piece 24 does not collide with the stopper 33 every time the opening 2 is closed. This can suppress the occurrence of damage.

Here, when the door 3 is closed at a high speed, such as when the door 3 is closed vigorously, the cushion member 2
9 collides with the handrail 8 and the momentum
The front end of the door 3 jumps up from the handrail 8 as shown in FIG. Then, the stopper 33 becomes the cushion member 3
2 and comes into contact with the rear surface of the rising piece 24 and is caught. As a result, the further protrusion of the door 3 is regulated, and the door 3 returns to the rear side of the handrail 8 and closes the opening 2, so that the door 3 is prevented from falling off. Further, at this time, the stopper 33 abuts on the rising piece 24 via the cushion member 32, so that the impact applied to both the stopper 33 and the rising piece 24 is reduced, and therefore, the risk of breakage of both is suppressed.

On the other hand, when cleaning the back side of the door 3, etc.
The front portion of the door 3 is lifted with the handle 28, and the entire door 3 is further lifted from the rail 19 as shown in FIG. Then, the door 3 is moved forward, and the rear part of the door 3 is pulled out from between the front edge 21A of the cover 21 and the top wall 6. At this time, since a distance larger than the dimension from the upper surface of the frame 27 of the door 3 to the lower end of the stopper 33 is formed between the rising piece 24 and the front edge 21A of the cover 21, the stopper 33 is pulled out when the door 3 is pulled out. Is not in the way, and the door 3 can be easily removed from the showcase 1.

FIGS. 6 and 7 show a structure in which the door 3 is detached by a connecting member made of a chain or a wire without using the stopper as described above. In each drawing, the same reference numerals as those in FIGS. 1 to 5 are the same.
That is, in this case, one end of a chain 35 as a connecting member is screwed to the rear surface of the rear side of the frame 27 of the door 3 as shown in FIG. Is fixed to the mounting plate 34. Further, the length of the chain 35 is relaxed as shown in FIG. 7 with the door 3 closing the opening 2, and the front end of the door 3 jumps up from the handrail 8, further jumps forward and gets over the handrail 8. In this state, it is sized to restrict the door 3 from popping out further.

As a result, the door 3 is prevented from falling off even when the door 3 is closed vigorously as described above. In addition, the length of the chain 35 is set such that the rear end of the door 3 is the front edge 2 of the cover 21.
By setting the size to be tensed when it moves forward from 1A, the back surface of the door 3 can be easily cleaned. Further, since the chain 35 is loosened when the door 3 closes the opening 2, the chain 35 does not become tensioned each time the opening 2 is closed.
5 and the mounting plate 34 can be prevented from being damaged.

[0024]

As described in detail above, according to the first aspect of the invention, when the door closes vigorously and the end in the closing direction of the door tries to get over the opening of the showcase, the stopper is moved to the edge of the ceiling wall. To prevent the door from climbing over the opening, so that the door is prevented from falling off, and the inconvenience such as damage to the door and injury to the user caused by the door can be surely prevented. In addition, when the door closes the opening, the stopper is separated from the edge of the top wall, so that each time the door is closed, the top wall comes into contact with the stopper, and unnecessary impact is applied to the top wall and the stopper. Therefore, the life of the parts of the ceiling wall and the stopper can be maintained long.

According to the second aspect of the present invention, in addition to the above, an interval larger than at least the dimension from the upper surface of the door to the lower end of the stopper is formed between the edge of the top wall and the cover provided thereabove. Therefore, even when the door is pulled out and removed from between the cover and the top wall, the stopper does not become an obstacle, so that the back surface of the door can be easily cleaned.

Further, according to the third aspect of the invention, even if the door closes vigorously and the end in the closing direction of the door passes over the opening of the showcase, the door is prevented from falling off by the connecting member, whereby Inconveniences such as damage to the door and injury to the user can be reliably prevented. Also, in the state where the door closes the opening, the connecting member is relaxed, so that the connecting member is tensioned each time the door is closed, and unnecessary acting force is not applied to the rear portion of the top wall and the connecting member, The component life of the rear part of the ceiling wall and the connecting member can be maintained long.

[Brief description of the drawings]

FIG. 1 is an enlarged vertical sectional side view of an opening of a showcase to which the present invention is applied.

FIG. 2 is a vertical sectional side view of a showcase.

FIG. 3 is a rear perspective view of a door.

FIG. 4 is an enlarged vertical cross-sectional side view of an opening of the showcase in a state where the front end of the door is going to get over the handrail.

FIG. 5 is an enlarged vertical sectional view of an opening of the showcase in a state where a door is about to be removed.

FIG. 6 is a rear perspective view of the door when a chain is used to prevent falling off.

FIG. 7 is an enlarged vertical sectional side view of a rear part of an opening of the showcase having the door of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Showcase 2 Opening 3 Door 6 Top wall 24 Rising edge 33 Stopper 35 Chain

Continuation of the front page (56) References JP-A-4-64312 (JP, A) JP-B1-44994 (JP, B2) JP-B2-31018 (JP, Y2) JP-B61-42453 (JP) , Y2) Jiko 61-10155 (JP, Y2) Jiko 3-38623 (JP, Y2) Jiko 55-31509 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁶ , DB Name) A47F 3/00-5/16 F25D 23/02

Claims (3)

(57) [Claims] 1. A showcase having an inclined opening in a top wall, wherein the opening is openably and closably closed by a sliding door, a stopper is provided at an end of the door in an opening direction, and the stopper is provided. When the door closes the opening, the door is separated from the edge of the top wall, and the end of the door in the closing direction approaches the edge of the top wall in a state of trying to get over the edge of the opening. A door device for a showcase, which is in contact with the door. 2. A cover is provided above the top wall, a door is stored between the top wall and the cover when the opening is opened, and at least the door is provided between the top wall edge and the cover. The door device for a showcase according to claim 1, wherein an interval larger than a dimension from an upper surface to a lower end of the stopper is formed. 3. A showcase having an inclined opening in a top wall, wherein the opening is closed by a sliding door so as to be openable and closable, the end in the opening direction of the door being connected to the rear of the top wall. A door device for a showcase, characterized in that a connection member is provided, and the connection member is dimensioned to relax with the door closing the opening.