JPH07324565A - Overhead door - Google Patents

Abstract

PURPOSE:To store a door body flush approximately with a frame so as to maintain the effective height of an opening as large as possible, increase the reliability and smoothness of closing operation, and also-reduce the man-hour for assembly of the door body to increase the assemblage property. CONSTITUTION:A door body 2 is formed by connecting two upper and lower panels 3 to each other. Also a lower end guide roller 7 installed at the lower end both sides of the door body 2 is guided to the upper end of a third guide rail 14 installed erectedly on both sides of an opening part so as to store the door body 2 flush approximately with a frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead door installed in an opening of a building or an assembled garage.

[0002]

BACKGROUND OF THE INVENTION Generally,
This kind of overhead door forms a door body by flexibly connecting a plurality of panels arranged in the vertical direction, and the door body has a closed posture along the opening and a storage posture along the indoor ceiling. It has a substantially inverted L-shaped guide rail (consisting of a vertical portion, an R portion, and a horizontal portion) for transforming. However, conventionally, a large number (four or more) of panels are connected to form a door body, and guide rollers provided on both sides of the lower end portion of the door body are guided by the above-described inverted L-shaped guide rails. Therefore, when the door body is stored, it is necessary to leave the panel at the lowest position in the R portion of the guide rail without aligning all the panels with the horizontal portion of the guide rail. In other words, when all the panels are placed along the horizontal part of the guide rail, the door loses its own weight lowering force and cannot be closed. Therefore, leave the panel at the lowest position in the R part of the guide rail. Although it was able to secure its own weight descent force, in this case, the lowermost panel inclines even in the stored state, so the effective height of the opening is inevitably lowered, and the door body is as described above. Since it is formed of a large number of panels, the number of man-hours for assembling the door body at the site is large and the assembling property is poor.

[0003]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing an overhead door capable of eliminating these drawbacks in view of the above-mentioned circumstances, and a plurality of vertically arranged doors are arranged vertically. Is an overhead door in which the door body is formed by flexibly connecting the panels and the door body is transformed into a closed posture along the opening and a storage posture along the indoor ceiling portion. The door includes a door body formed by connecting two upper and lower panels in a bendable manner, guide rollers provided at both upper end side positions, intermediate part side position and lower end side position of the door body, respectively. A substantially inverted L-shaped first guide rail that guides the intermediate guide roller from both sides of the opening to the indoor ceiling position, and the upper end guide roller is guided in the front-back direction along the indoor ceiling part. The second guide rail that guides the upper end guide roller to the upper end position of the opening to close the door body in a substantially flat state when closed and the lower end guide roller is vertically moved along both sides of the opening. Guide in the direction,
Further, it is configured by using a third guide rail which guides the lower end guide roller to the upper end position of the opening during storage and makes the storage attitude of the door body substantially flush. Further, the invention is characterized in that a damper that expands and contracts according to the bending of the door body is provided on the inward bending side of the door body bending portion, and the damping force generation direction of the damper is set to the extension side. With this configuration, the present invention enables the door body to be housed in a substantially flush manner, secures the effective height of the opening as large as possible, and improves the certainty and smoothness of the closing operation. In addition, the number of steps for assembling the door body can be reduced to improve the assemblability.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes an overhead door which is built in an opening of a garage or the like, and a door body 2 which constitutes the overhead door 1 is formed by bending a plurality of panels 3 arranged in a vertical direction. However, in the present invention, the door body 2 is configured by connecting two upper and lower panels 3 having a predetermined height dimension (approximately twice as large as the conventional panel) without using a large number of panels 3. is doing. 4
Is a hinge for flexibly connecting the panel 3 comrades.

Reference numerals 5, 6, and 7 denote guide rollers projecting from the left and right sides of the door body 2, and the guide rollers 5, 6, and 7 are located on both sides of the upper end portion of the door body 2 and on both sides of the intermediate portion. The upper end guide roller 5 and the intermediate guide roller 6 are provided at both the positions and both sides of the lower end, respectively. On the other hand, the lower end guide roller 7 projects directly from the side surface of the vertical frame 3a toward the side while projecting.

On the other hand, 10 is a first guide rail,
The first guide rail 10 includes support columns 11 on both left and right sides of the opening.
A vertical portion 10a provided along the garage, a horizontal portion 10b provided along the ceiling portion 12 of the garage, and both portions 10
The intermediate portion guide roller 6 rolls in the guide groove of the first guide rail 10 so as to integrally have an R portion 10c connecting a and 10b. It fits in freely. That is, the middle part of the door body 2 is vertically guided by the first guide rail 10 between the opening position and the ceiling position.

Further, 13 is the first guide rail 10
Second guide rails that are arranged side by side above the horizontal portion 10b of the first guide rail 1
Straight part 13a along the horizontal part 10b of 0, and the straight part 13
Although it has an R portion 13b extended to the front end portion of a, the front end of the R portion 13b reaches near the upper end portion of the opening. That is, the second guide rail 13 guides the upper end guide roller 5 in the front-rear direction along the ceiling portion 12, but when closed, guides the upper end guide roller 5 to the vicinity of the upper end of the opening, Therefore, the closing posture of the door body 2 can be made substantially flush.

Reference numeral 14 is a third guide rail which is erected upright along the pillar 11. The third guide rail 14 vertically extends the lower end guide roller 7 along both sides of the opening. Although it guides, the base end side of the wire 15 engaged with the support shaft 7a of the lower end guide roller 7 has a pulley 1 arranged above the third guide rail 14.
6 and is attached to a wire drum 17 arranged in the rear portion of the ceiling portion 12. In other words, when the wire drum 17 rotates forward and backward by the biasing force of the balance spring or the driving force of the electric motor, the wire 15
Winding and feeding action and each guide rail 10, 1
The door body 2 is moved up and down based on the guide action of 3, 14, but when the door body 2 is stored, the third guide rail 14 guides the lower end guide roller 7 to the opening upper end position. The door body 2 can be housed in a substantially flush manner.

Furthermore, 18 is a pair of left and right oil dampers provided in the bent portion of the door body 2. Since the oil damper 18 is provided on the inner bent side of the bent portion,
While the door body 2 is contracted as the door body 2 is bent, the door body 2 is expanded as the door body 2 is folded back, but the damping force generation direction of the oil damper 18 is set only on the extension side. There is. That is, during the closing operation and the storage operation of the door body 2, the door body 2 gradually bends up to a predetermined half-open position, while the door body 2 gradually extends from the time when this position is exceeded, Since the oil damper 18 exerts a damping force when the door body 2 extends, the operating speed of the door body 2 is decelerated at the latter half of the opening / closing operation stroke to fully close the door body 2.
It is designed to reduce the impact and impact noise when it is fully opened.

In the embodiment of the present invention constructed as described above, the door body 2 includes the wire 15 formed by the wire drum 17.
The lower end guide rollers 7 provided at both sides of the lower end portion of the door body 2 are raised by the winding operation of the third guide rails 14 provided on both sides of the opening portion.
Since the upper end of the door, that is, the upper end of the opening is guided, the door body 2 is housed in a substantially flush manner. In this state, the lower panel 3 forming the door body 2 straddles the first guide rail 10 and the third guide rail 14 to secure its own weight lowering force. Will ensure that the door body 2 descends.

As described above, according to the present invention, the door body formed by flexibly connecting the plurality of panels 3 is placed in the closed posture along the opening portion and the storage posture along the indoor ceiling portion. Although it is transformed, the lower panel 3 that constitutes the door body 2 is housed in a state of straddling the first guide rail 10 and the third guide rail 14, so that the lower panel 3 is secured while maintaining its own weight lowering force. It can be stored in a horizontal position. Therefore, the entire door body 2 can be housed in a substantially flush manner, and as a result, the effective height of the opening can be as large as possible, and the appearance is excellent. Can be

Further, since the door body 2 is formed by the upper and lower two panels 3, it is possible to reduce the number of door body assembling steps in the field and improve the assembling ability. The number of rollers 5, 6, 7 can be reduced, and moreover, the load of the lower panel 3 which is a door body lowering force at the time of closing is increased, so that a large self-weight lowering force is secured and the closing operation is reliable. And smoothness can be improved.

Further, in the bent portion of the door body 2,
Since the oil damper 18 that generates a damping force at the time of extension is provided, it is possible to reduce the operation speed of the door body 2 in the latter half of the opening and closing operation stroke to reduce the impact and impact sound at the time of fully closing and fully opening. It is possible to prevent deformation of the member due to impact, and also to improve quietness of the overhead door.

[0014]

In summary, since the present invention is constructed as described above, the door body formed by flexibly connecting a plurality of panels has a closed posture along the opening and an indoor ceiling portion. However, when the door body is stored, the lower end guide rollers provided on both sides of the lower end portion of the door body are moved by the third guide rails provided along both sides of the opening. Since the guide is guided to the upper end position of the opening, the door body can be housed in a substantially flush manner while ensuring its own descent force. Therefore, it is not possible to secure the effective height of the opening as large as possible as compared with the conventional overhead door in which the lowermost panel is stored in a tilted state, and it also has an excellent appearance. Can be

Moreover, since the door body is formed of two upper and lower panels, the number of steps for assembling the door body on site can be reduced to improve the assembling property, and the guide roller provided for each panel can be used. It is also possible to reduce the number of sheets, and since the load on the lower panel that is the door body lowering force at the time of closing increases, a large self-weight lowering force is secured and the certainty and smoothness of the closing operation are improved. be able to.

Further, when a damper which generates a damping force at the time of extension is provided at the bent portion of the door body, the operating speed of the door body is decelerated at the latter half of the opening / closing operation stroke to fully close and fully open. Since the impact and the impact sound are reduced, it is not possible to prevent the deformation of the member due to the impact, and the quietness of the overhead door can be improved.

[Brief description of drawings]

FIG. 1 is a front view of an overhead door.

FIG. 2 is a side view of the same showing a closed state.

FIG. 3 is a side view of the same showing a half-opened state.

FIG. 4 is a side view of the same showing a stored state.

FIG. 5 is a side view of the upper end of the opening.

FIG. 6 is a horizontal sectional view of an opening.

FIG. 7 is a rear view of the door body.

FIG. 8 is a side view of an overhead door showing a conventional example.

[Explanation of symbols]

 1 Overhead Door 2 Door Body 3 Panel 5 Top Guide Roller 6 Middle Guide Roller 7 Bottom Guide Roller 10 First Guide Rail 13 Second Guide Rail 14 Third Guide Rail 18 Oil Damper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroshi Takahashi 2-1-1 Nishishinjuku, Shinjuku-ku, Tokyo Sanwa Shatter Industry Co., Ltd. (72) Inventor Norio Ito 2-1-1 Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Sanwa Shutter Industry Co., Ltd.

Claims (2)

[Claims] 1. A door body is formed by flexibly connecting a plurality of panels arranged in the vertical direction, and the door body is changed into a closed posture along an opening portion and a storage posture along an indoor ceiling portion. An overhead door that is made to appear, the overhead door including a door body formed by connecting upper and lower two panels in a freely bendable manner, and an upper end side both sides position, an intermediate part both sides position and a lower end side both sides of the door body. Guide rollers provided at respective positions, a first inverted L-shaped first guide rail that guides the intermediate guide roller from both sides of the opening to the indoor ceiling position, and the upper end guide roller along the indoor ceiling. And guides the upper end guide roller to the upper end position of the opening to close the door body in a substantially flush manner when the door is closed, and the lower end guide roller is opened. It is configured using a third guide rail that guides vertically along both sides of the mouth part and guides the lower end guide roller to the upper end position of the opening during storage to make the storage attitude of the door body substantially flush. An overhead door that is characterized by 2. The damper according to claim 1, wherein a damper that expands and contracts according to the bending of the door body is provided on the inner side of the bent portion of the door body, and the damping force generation direction of the damper is set to the extension side. An overhead door featuring.