JP2744153B2 - 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, for example, a door device for opening and closing an opening of a refrigerator, and more particularly, to a door device which is supported by a hanging wheel so as to be openable and closable.

[0002]

2. Description of the Related Art A conventional door device of this kind, such as a refrigerator ,
The door body is suspended and supported by a hanging wheel that rolls the rail so that it can be opened and closed freely, and when closed, the sealing material provided around the inner surface of the door body is in contact with the periphery of the opening to seal the door body. Open
It requires a tightening device that fits closely around the mouth.
For this reason, for example, Japanese Patent Application Laid-Open No. 61-113982 discloses
As described, the closing of the door on the diamond shaped rail
Form a curved portion that curves inward at the position, and
Provide a bridge with which the hanging wheel that engages ahead of the curved section engages,
The body moves toward the closed position and the lifting wheel is positioned on the open side.
Leading to the bridge, the leading roller engages the bridge.
Pass through the bend, and both suspension wheels
When it reaches, the hanging wheel falls into the curved part, the door body
Moved inward so that the door fits tightly around the opening
A known door device is known.

[0003]

SUMMARY OF THE INVENTION The above-mentioned conventional Japanese Patent Application Laid-Open No. Sho 61
In the door device having the structure described in JP-A-1133982 , the structure of the rail is complicated, and moreover, only one rail is provided.
In addition, a bridge is provided at the curved part on the open side and the door
The suspension wheel that follows the preceding suspension wheel when the vehicle is closed
Only the leading lifter with a different length can open the curved section on the open side.
Must be engaged with the ridge,
Poor assemblability because it cannot be a single structure
Ku, there has been a problem to be expensive.

The present invention has been made in view of the above problems, and provides a door device which is closed by its own weight when the door is closed, has good open / close operability , is simple in structure, and can be obtained at low cost. is there.

[0005]

According to a first aspect of the present invention, there is provided a door device comprising a rail provided at an upper portion of an opening / closing opening and a door body provided at an upper portion with a hanging wheel rolling along the rail. The rail forms a plurality of rail sides parallel to each other with an interval in the front-rear direction, and each rail side includes a vertical part and an inclined part integrally formed on the upper part of the vertical part and inclined toward the front side. A state in which the door body is provided with a hanging wheel that rolls on an inclined portion of each rail side portion of the rail, and the door body closes an opening on the inclined portion of each rail side portion of the rail. The notch in which the hanging wheel at the time of engagement is notched is formed.

According to a second aspect of the present invention, the door body is provided with a sealing material on the periphery and the lower surface of the inner side surface to be in contact with the peripheral edge of the opening.

[0007]

According to the door device of the first aspect of the present invention, when the door is closed, each of the hanging wheels extends along each rail side portion of the rail provided above the opening and closing opening with the door being closed. When the door is rolled and moved, each hanging wheel falls into the recess formed in the inclined part of the rail side at the closed position of the door by its own weight, and the door is inward by the length of the projected length of the inclined part. And the door closes the opening. Further, when the door is opened, the hanging wheel engages with the inclined portion from the recess at the side of the rail, so that the door moves forward while moving upward, and is easily opened and closed.

In the door device according to the second aspect of the present invention, when the door is closed, the sealing members provided around the inner surface and the lower surface abut against the peripheral edge of the opening to be hermetically closed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes, for example, a door for opening and closing an opening 2 such as a refrigerator or a clean room. Sealing members 3 and 4 such as hollow packing are attached to the inner surface of the door 1 and the lower surface thereof. A plurality of, for example, two left and right hanging wheels 5, 6 are attached to the upper portion of the door body 1 with their positions in the front-rear direction being mutually deviated from each other.

Reference numeral 7 denotes rails for rolling the hanging wheels 5 and 6, respectively. The rails 7 are provided above the opening / closing opening 2 in the opening / closing direction of the door body 1. , 6, a plurality of, for example, two rail sides 8, 9 are formed in parallel with an interval in the front-rear direction corresponding to the amount of deviation in the front-rear direction. Each of the rail sides 8, 9 has a vertical portion 10 and an inclined portion 11 integrally formed on the upper portion of the vertical portion 10 and inclined toward the front side.

Further, each rail side portion 8, 9 of the rail 7 is provided.
The recesses 12 with which the hanging wheels 5 and 6 are engaged are formed in portions where the hanging wheels 5 and 6 are located when the door 1 closes the opening / closing opening 2. Each of the recesses 12 is formed by cutting out a gentle concave arc from the open side to the closed side of the door 1.

Next, the operation of this embodiment will be described. Door 1
When the door is closed, the hanging bodies 5 are rolled and moved along the respective rail sides 8, 9 of the rail 7 provided above the opening / closing opening 2 with the door body 1 facing the closing direction. At the closed position of the door 1, the hanging wheels 5, 6 fall into the recesses 12 formed in the inclined portions 11 of the rail sides 8, 9 of the rail 7 by the weight of the door 1 (FIG. 1). The door 1 closes the opening 2 by being pushed inward by the protruding dimension length a of the inclined portion 11. When the door 1 is closed, the sealing members 3 and 4 provided on the inner surface and the lower surface thereof are brought into contact with the peripheral edge of the opening / closing opening 2 to be hermetically closed.
6 is an inclined portion 11 from a concave portion 12 of the rail side portions 8 and 9 of the rail 7.
In order to engage with the upper edge of the door 1, the door body 1 moves to the front side while moving to the upper side.

The hanging wheels 5, 6 of the door body 1 are engaged with and rolled on the rail sides 8, 9 of the separate rails 7, so that the hanging wheels 5, 6 are recessed in the rail sides 8, 9, respectively. 12
There is no distortion when falling into or rising from the recess 12.

[0015]

According to the first aspect of the present invention, when the door is closed, the door is suspended along the rail sides of the rail provided above the opening and closing opening in the closing direction. When the vehicle is rolled and moved, each hanging vehicle falls into the recess formed in the inclined portion of the rail side at the closed position of the door by its own weight, and the door is the length of the projected portion of the inclined portion. Pushed inward, the door body can close the opening and closing door, and when opening the door body, the hanging wheel engages with the inclined part from the concave part of the rail side, so the door body moves forward while moving upward. It is released and does not require operation of the tightening device ,
The rails have multiple rail sides in parallel in the front-rear direction
A suspension wheel that forms and rolls on each rail side is installed on the door body.
Because of the beam, the load distribution is evenly distributed and the door can be opened and closed.
And each rail side of the rail is vertical
Part and the upper part of this vertical part are integrally formed toward the front side
Forming an inclined portion with a slope, and forming a concave portion in the inclined portion.
Therefore, the structure is simple and inexpensive.

According to the second aspect of the present invention, when the door is closed, the sealing members provided around the inner surface and the lower surface abut against the peripheral edge of the opening and are securely sealed.

[Brief description of the drawings]

FIG. 1 is a front view of a door device showing one embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view of a part of the rail.

FIG. 5 is an enlarged front view of a part of the above.

FIG. 6 is an enlarged side view of a part of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Opening / closing opening 3, 4 Sealing material 5, 6 Hanging wheel 7 Rail 8, 9 Rail side 10 Vertical part 11 Inclined part 12 Concave part

Claims (2)

(57) [Claims] 1. A rail provided at an upper part of an opening and closing opening, and a door body provided at an upper part with a hanging wheel rolling along the rail, wherein the rails are parallel to a plurality of rail sides at intervals in the front-rear direction. And each rail side has a vertical part and an inclined part formed integrally with the upper part of the vertical part and inclined toward the front side, and the door body has a rail part of each rail side of the rail . A hanging wheel for rolling the inclined portion is provided, and a concave portion for engaging with the hanging wheel when the door body closes the opening is cut out in the inclined portion on each rail side of the rail. A door device characterized by being formed. 2. The door device according to claim 1, wherein the door body is provided with a sealing material at the periphery and the lower surface of the inner side surface so as to be in contact with the peripheral edge of the opening.