JP3324104B2 - Storage door folding door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding door type door for a storage which can be opened and closed by a door provided so that an opening of the storage can be vertically folded.

[0002]

2. Description of the Related Art Conventionally, this type of folding door is provided on a cargo box mounted on the rear of a truck.
No. 0250 is known. As shown in FIG. 5, two doors 2 and 2A are pivotally attached to the opening of the packing box 1 so that the doors 2 and 2A can be folded in two, and one end of a wire 3 is attached to both sides of the lower end of the lowermost door 2A. And a weight 4 substantially equal to the total weight of each of the doors 2 and 2A is connected to the multiple ends of the wire 3, and a rotating roller 5 that folds the wire 3 is provided above the packing box 1.
To support. The heavyweight 4 is lifted and lowered in the opposite direction to the moving direction of the doors 2 and 2A with the opening and closing operations of the doors 2 and 2A via the rotating roller 5, so that the doors 2 and 2A can be opened and closed with a light force, In addition, the weights 4 and the doors 2, 2A are balanced so that the doors 2, 2A are held in a vertically folded state when opened.

[0003]

However, in the conventional folding door, the weight of each door 2, 2A is balanced with the weight 4, and the weight 4 is moved in the direction opposite to the moving direction of the doors 2, 2A. Since it is necessary to set the length L of the wire 3 to be at least the same as the movement stroke of the lower door 2A since the wire 3 is raised and lowered, and it is also necessary to secure the length L1 of the heavyweight 4 itself, As shown by the chain line in FIG. 3, when each door 2, 2A is completely opened, the length L of the wire 3 needs to be the same as the opening width of the packing box 1, and is inevitably connected to the tip of the wire 3. The heavyweight 4 thus placed is placed under the floor of the packing box 1. However, like a lorry, it is possible to secure a space under the floor where the cargo box 1 can move away from the ground and the heavyweight 4 can move. However, this type of folding door is used as a storage for power supply equipment that is installed outdoors. Usually, this kind of storage is installed and fixed on the installation surface, and it is not possible to secure a space under the floor where the heavyweight 4 can move. Further, in order to stably lift and lower the heavyweight 4, a structure for arranging and guiding the heavyweight 4 in the hollow elevating post 6 is necessary, which not only complicates the structure but also makes the heavyweight 4 in the elevating post 6. 4, the wire 3, the heavyweight 4 and the rotating roller 5 are covered with the lifting posts 6,
It cannot be checked directly from the outside, and is inferior in maintenance.

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem, and it is possible to effectively utilize the inside of a storage as a storage space without securing a storage space for a folding door opening / closing mechanism under the floor. Another object of the present invention is to provide a folding door of a storage which is simple and easy to maintain.

[0005]

In order to achieve the above object, the present invention comprises an opening provided in a storage, and a plurality of doors for opening and closing the opening. At the upper edge of the opening is rotatably supported, and at the lower end of the upper door, another door is rotatably supported at the lower end, and when the opening is opened,
In Orito type door storage case which is adapted to place the top of the storage box folded over the respective door up and down inside the opening
Place link arms on both sides facing each other, and
The upper end of the arm is supported by the upper door,
The lower end of the arm is provided at the lower part inside the opening.
The link arm is vertically and rotatably supported on the inner rail, and a longitudinal groove is provided in the link arm for guiding a rotating roller that is pivotally supported on the lower end of the lower door. And a telescopic urging member which is always urged in the extension direction and is connected to the main body.

[0006]

In the folding door of the storage according to the present invention, when the door is lifted from the closed state of the folding door, the link arm pivotally attached to the upper door is pulled upward, and the link arm is inclined outward. . Then, the upper side door raised to the upper side is urged by the urging member in a direction in which the upper side door is flipped up, and each door can be opened with a light force. Each folded door is held by the urging member without being lowered by its own weight. Then, when closing the opened opening, each door is pushed down against the urging member. In this case, since the link arm is inclined outward, the rotating roller pivotally supported by the lower end of the lower door smoothly rolls along the concave groove, and each door can be pushed down without difficulty.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show one embodiment of the present invention,
In FIG. 1, reference numeral 10 denotes a storage box formed of aluminum or stainless steel in a box shape and having an opening 11 serving as an entrance by opening the front side thereof, for example, for accommodating power supply equipment installed outdoors. Used for 12, 12
Reference numeral A denotes two folding doors for opening and closing the opening 11 of the storage box 10, and the upper door 12 is hinged to the upper edge of the opening 11 by the hinge 13, and the upper side thus hinged. A lower door 12A is connected to a lower end of the door 12 by a hinge 13, whereby
As each door 12, 12A is folded outside the storage 10,
It is folded in two at the top of the storage. Link arms 14 are arranged on the left and right sides of the inner surface of the opening 11 so as to face each other, and guide rollers 15 are supported at the lower ends of the link arms 14 outwardly. Each of these guide rollers 15
The upper end of the link arm 14 which is inserted into a U-shaped guide rail 16 fixed to the lower portion of the inner surface of the opening 11 and slidably supports the lower side in this manner, is connected to the upper side door. The upper side door 12 and the storage 10 are connected to each other via a link arm 14 while being pivotally supported by a receiving plate 17 fixed to the upper side of the upper side 12. A guide roller 15 is provided at the upper end of the guide rail 16.
An inclined stopper 16A is formed to prevent the stopper from coming off. Further, the link arm 14 is formed in a U-shaped cross section, and a concave groove 14A is vertically provided inward, while a substantially L-shaped mounting arm 18 is fixed to both sides of the lower end of the lower door 13A. And a rotating roller 19 pivotally supported at the tip of the mounting arm 18.
Are engaged in the concave groove 14A. Then, a base side of a gas spring 21 serving as an urging member is pivotally supported on a mounting plate 20 fixed to an upper end portion of the link arm 14, and a rod 20A of the gas spring 21 is fixed in the middle of the inner surface of the storage 10. It is supported by the mounting plate 20A. The gas spring 21 is constantly urged in the direction of extension by the gas sealed therein.
In the figure, reference numeral 22 denotes a packing formed on the periphery of the opening 11.

The operation of the embodiment constructed as described above will be described.

FIG. 1 shows a state in which the doors 12 and 12A are closed. When the doors 12 and 12A are closed, the guide rollers 15 provided at the lower ends of the link arms 14 are opened. The link arm 14 is disposed almost vertically by a guide roller 15 and a rotating roller 19 that is pivotally supported on both sides of the lower end of the lower door 13A, which is located at the lower end of the guide rail 16 fixed to the lower part of
On the other hand, the gas spring 21 bridged between the link arm 14 and the opening 11 of the storage 10 has an elevation angle α between its axis X1 and the perpendicular X.
Is slightly tilted inward about two degrees, so that the lower door 13A is urged downward by the gas sealed in the gas spring 21 and the doors 12, 12A are kept closed. Is done. Here, when the lower door 12A is pulled up, the rotating roller 19 that is pivotally supported at the lower end of the lower door 12A is rotated.
Rises along the concave groove 14A of the link arm 14, and each door 12,
12A is folded in two, and the link arm 14 pivotally attached to the upper door 12 is lifted upward, whereby the guide roller 15 of the link arm 14 is moved to the guide rail 16
The link arm 14 inclines outward while ascending along. On the other hand, the gas spring connected to the link arm 14
21 also follows the operation of the link arm 14, and each door 12, 12A
The gas spring 21 which was slightly inclined to the inside of the storage 10 at the time of closing is gradually shifted vertically, and further inclined from the vertical to the outside of the storage 10 as shown by a chain line in FIG. When the gas spring 21 tilts from the vertical to the outside of the storage box 10, the biasing force of the gas spring 21 that has been biasing the lower door 13A to press downwardly is applied so that the upper door 12 jumps up. For this reason, gas spring 21
Thus, the doors 12, 12A can be opened with a light force. Then, as shown in FIG. 2, each door 12, 12A is raised and the opening
When the door 11 is completely opened, the doors 12 and 12A folded up and down at the top of the storage box 10 are supported by the gas springs 21 and the doors 12 and 12A are not lowered by their own weights. The part 11 is held in an open state. When closing the opened opening 11, the doors 12 and 12A may be lowered. In this case, if the height of the storage box 10 is set higher than the height of the worker, the opening 11 When closing
Each of the doors 12 and 12A folded on the upper part of the storage box 10 is inevitably operated so as to be pulled down from the lower side, and even if the link arm 14 is arranged vertically, the concave groove 14A of the rotating roller 19 is formed. Move smoothly along, but when the height of the storage 10 is set to a height of, for example, about 1.3 m, the height of the storage 10 is lower than the height of the worker and is folded up and down. An operation is performed to push down each door 12, 12A from above. As described above, when the doors 12 and 12A are pushed down from the upper side, if the link arm 14 is arranged vertically,
Since the rotating roller 19 of the link arm 14 is pressed against the concave groove 14A and the rotating roller 19 cannot smoothly roll down,
It is feared that the doors 12, 12A cannot be closed smoothly. However, in the present embodiment, even if the height of the storage box 10 is set lower than the height of the worker, as shown by the solid line in FIG. Due to the inclination, the rotating roller 19 pivotally supported at the lower end of the lower door 13A is provided with the concave groove 14A of the link arm 14.
, And the doors 12, 12A can be pushed down stably.

As described above, in the present embodiment, the upper door 12 pivotally attached to the upper end of the opening 11 and the storage 10 are connected by the gas spring 21 constantly biased in the extension direction, so that the weight is lighter. The doors 12 and 12A can be opened and closed with force, and gas springs
By means of 21, the doors 12 and 12A can be held in the open state and the closed state, respectively. Further, since it is not necessary to secure a space for accommodating the gas spring 21 below the floor of the storage 10 with the opening 11 opened, the inside of the storage 10 can be effectively used as a storage space, and particularly, the installation surface Direct storage to 10
It is advantageous when installing. In addition, since the upper door 12 and the storage 10 are only connected by the gas spring 21, there is no need for a guide structure such as a hollow elevating post for guiding the heavyweight, as in the conventional case, and the structure is simple. , Since the gas spring 21 can be exposed and arranged in the storage box 10,
The gas spring 21 can be directly confirmed, and the maintenance is excellent. Further, since the rotating roller 19 pivotally supported by the lower door 13A is guided by the concave groove 14A of the link arm 14 bridged between the upper door 12 and the storage 10,
The link arm 14 is caused to follow the opening operation of the doors 12 and 12A, and is inclined to the outside of the storage box 10. When the doors 12 and 12A are closed, the rotating roller 19 pivotally supported by the lower door 13A is formed into a groove 14A. , And the doors 12, 12A can be stably pushed down without being caught.

Although one embodiment of the present invention has been described in detail , the present invention is not limited to the above embodiment, and various modifications can be made. For example, although an example in which the storage is used for power supply equipment installed outdoors or the like is shown, the present invention is not limited to this, and it may be used as a cargo box, various containers, storage, etc. shown in the conventional example, which is mounted on a truck. Good. In addition, a gas spring in which gas is sealed is used as the biasing member, but a coil spring may be built in the gas spring, and a case in which two folding doors are provided is shown. At least an even number is sufficient.

[0012]

According to the present invention, there is provided an opening provided in the storage, and a plurality of doors for opening and closing the opening, and the uppermost door is rotatably mounted on the upper edge of the opening. The other door is pivotally supported at the lower end of the upper side door so as to be rotatable, and when the opening is opened, the doors are folded up and down to be arranged at the upper part of the storage. In the folding door type door of the storage
Link arms are arranged on both sides inside the opening so as to face each other.
And the upper end of this link arm is pivotally supported on the upper door.
As well as the lower end of the link arm inside the opening .
Up and down and rotatable on guide rails provided on the lower side
Supporting, on the link arm, while Tate設a groove for guiding the rotating roller for pivotally supporting the lower end of the lower side door, which is always biased in the direction of elongation to connected to the upper side door and storage case Providing a retractable biasing member allows the storage space to be used effectively as a storage space without securing a storage space for the folding door opening / closing mechanism under the floor, and the structure is simple and easy to maintain. An excellent folding door of a storage can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a closed state of a folding door showing one embodiment of the present invention.

FIG. 2 is a sectional view showing an open state of the folding door;

FIG. 3 is an enlarged sectional view showing the vicinity of the guide rail.

FIG. 4 is a perspective view of the storage case.

FIG. 5 is an explanatory view showing a conventional example.

[Explanation of symbols]

10 Storage 11 Opening 12,12 A Door 14 Link arm 16 Guide rail 14A Groove 19 Rotary roller 21 Gas spring (biasing member)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ identification code FI E05B 65/16 E05B 65/16 (58) Investigated field (Int.Cl. ⁷ , DB name) E05D 15/26 B60J 5/06 B60J 5/12

Claims (1)

(57) [Claims] 1. An opening provided in a storage, and a plurality of doors for opening and closing the opening, wherein the uppermost door is rotatably supported on an upper end edge of the opening, and an upper part thereof is provided. Another door is rotatably supported at the lower end of the side door, and when the opening is opened,
In Orito type door storage case which is adapted to place the top of the storage box folded over the respective door up and down inside the opening
Place link arms on both sides facing each other, and
The upper end of the arm is supported by the upper door,
The lower end of the arm is provided at the lower part inside the opening.
The link arm is vertically and rotatably supported on the inner rail, and a longitudinal groove is provided in the link arm for guiding a rotating roller that is pivotally supported on the lower end of the lower door. A folding door of a storage, characterized by comprising a telescopic biasing member constantly biased in the direction of extension connected to the door.