JPH0321600Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an overhead door, for example, one that opens and closes the frontage of a garage, warehouse, entrance, etc.

(Prior art) Conventionally, this type of overhead door was
For example, multiple panels may be connected vertically via hinges to form a series of door bodies,
Support shafts are provided at the top and bottom of both ends of the door body in the width direction at a distance from the panel, and guide rollers that engage with the left and right guide rails are rotatably mounted on each support shaft, and each guide of the door body The rollers are engaged with the left and right first guide rails, and the uppermost left and right guide rollers are engaged with the left and right second guide rails provided above the first guide rails. The first guide rail of is a vertical part,
The left and right second guide rails are formed to have a curved part and a horizontal part. There is also a structure in which the door main body is movable up and down along the left and right first guide rails and the left and right second guide rails to open and close the frontage.

(Problem to be solved by the invention) In the case of the above structure, the guide rollers that are mounted on both ends of the top panel are mounted on shafts at a distance from the panel, so the door body cannot be moved inside the guide rail. When pushed up to the horizontal part of the upper part, the hinge connecting the top panel and the second panel turns in the opposite direction, causing the opposing edges of the upper and lower panels to meet each other. At the same time, the second guide roller from the top may engage with the upper side of the guide rail, and in such a case, the braking effect caused by the friction will make it difficult to push up the door body. There is a problem that the push-up becomes unsmooth, and sometimes it becomes impossible to push up. This is particularly true for low-head type overhead doors with a low frontage opening height.

Furthermore, the door body is installed on-site so that it can be raised and lowered to the left and right first and second guide rails that have been installed in advance.
At this time, if the uppermost left and right guide rollers that engage with the second guide rail are fixed to fixed positions on the left and right sides of the door body, the mounting positions of the uppermost left and right guide rollers should be changed. Since it cannot be adjusted, it may not be possible to engage the left and right guide rollers at the top of the door body with the curved part of the second guide rail due to installation errors of the second guide rail, and There is a problem in that even if the uppermost left and right guide rollers of the door body can be engaged with the curved portion of the second guide rail, the door body may not be able to be raised and lowered smoothly.

Therefore, the present invention was devised in view of the above points, and the guide rollers to be installed on the left and right sides of the top of the door body are attached to both widthwise ends of the top panel of the door body so that their positions can be adjusted freely. The object of the present invention is to solve the above-mentioned problems by making it possible to easily engage the guide rail.

[Structure of the idea]

(Means for Solving the Problems) The overhead door of the present invention has a pair of vertical parts arranged and fixed on the left and right sides, and a horizontal part above the vertical parts via a curved part. a first guide rail, and a curved portion that is located above the pair of first guide rails, is arranged and fixed on the left and right sides, and faces the curved portion of the first guide rail, and a pair of second guide rails having horizontal portions opposite to the horizontal portions of the guide rails;
A plurality of panels are connected via hinges, and a plurality of guide rollers that engage with the left and right first guide rails are rotatably mounted above and below both ends of the panel in the width direction. and a door body provided with roller units having guide rollers that engage with the left and right second guide rails at both ends in the width direction of the uppermost panel, and the left and right roller units are arranged in the width direction of the uppermost panel. It has a base plate that is attached to both ends so that its position can be adjusted in the vertical direction, and a sliding shaft is mounted on one side of the base plate so as to move forward and backward in the width direction of the panel, and the sliding shaft and the sliding shaft are mounted on the other side of the base plate. Slide pins are protruded in parallel, and one end of a plate facing the widthwise end face of the uppermost panel is fixed to the outer ends of the left and right sliding shafts, and the other end of the plate is fixed to the outer end of the left and right sliding shafts. A guide hole is formed through which a slide pin is inserted, and the guide roller is rotatably mounted between the left and right plates via a support shaft.

(Function) In the overhead door of this invention, the left and right second
Depending on the position of the curved portion of the guide rail, the base plate of the roller unit having the guide rollers to be engaged with the left and right curved portions is attached to the uppermost panel of the door body while adjusting the vertical position.

Then, the uppermost left and right guide rollers of the door body are engaged with the curved portions of the second guide rail, and the second and subsequent left and right guide rollers are engaged with the vertical portions of the left and right first guide rails. engage.
In this case, the uppermost left and right guide rollers are supported by a sliding shaft and a slide pin parallel to this sliding shaft, and are rotatably mounted on the middle part of a plate that can move forward and backward with respect to the end face of the panel. Therefore, the left and right plates with the top left and right guide rollers are supported without changing the spindle position of the rollers, and the movement of the left and right plates moves the top left and right guide rollers left and right. can be easily engaged with the curved portion of the second guide rail.

Next, when opening the frontage, when the door body is pushed up, the door body moves along the first and second guide rails via each guide roller and from the vertical part to the curved part to the horizontal position. The door body is moved from a vertical position to a horizontal position, and the frontage is opened. While being moved along the second guide rail, the second and subsequent guide rollers are moved along the first guide rail.
Since the uppermost panel is moved along the guide rail, the uppermost panel is smoothly pushed upwards by being pushed up from below, that is, without warping in the opposite direction.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

In the figure, 1 is the door body, and this door body 1
, a plurality of horizontally elongated panels 2 are arranged in parallel in the vertical direction, and both ends of each panel 2 are rotated via side hinges 3, and the middle portion thereof is rotated via an intermediate hinge (not shown). freely connected. Each of the panels 2 has a vertical frame 5 between both ends and between the middle part of a horizontal frame 4 arranged vertically in parallel with each other.
are fixed to each other, and a synthetic resin or metal closure plate 6 is integrally fixed to the hollow part between the horizontal frame 4 and the vertical frame 5 to form a horizontally elongated structure, and further,
In each panel 2, a series of engagement steps 7 are formed on the upper surface of the upper horizontal frame 4, the lower surface of the lower horizontal frame 4, and the upper and lower surfaces of the vertical frame 5. At the stepped portion 7, the panels 2 are engaged with each other in the vertical direction and are connected to each other.

Further, A is a roller unit, and this roller unit A has a base plate 9 that is attached to the left and right vertical frames 5 of the uppermost panel 2 so as to be able to adjust its position in the vertical direction. A mounting board 13 is formed to be attached to the side surface 12 of the vertical frame 5, and an engagement piece 15 that engages with the end surface 14 of the vertical frame 5 is bent at a substantially right angle at one end of the mounting board 13. At the other end of the mounting board 13, a mounting piece 16 is bent at a substantially right angle on the opposite side to the engaging piece 15, and the front part of this mounting piece 16 and the upper part of one side of the engaging piece 15 are bent. A hollow pipe body 18 is fixed horizontally between the protruding piece 17 which is cut and protruded near the bent part, and furthermore, a hollow pipe body 18 is fixed to the vertical frame 5 in the mounting board 13. A plurality of long grooves 19 communicating with the plurality of mounting holes 8 are formed in the vertical direction, and a slide pin 20 is provided on the other side upper part of the engagement piece 15, that is, at the same height position as the pipe body 18. It projects parallel to the pipe body 18. The base plate 9 is vertically adjustable in position with respect to the vertical frame 5 by a plurality of bolts 10 and nuts 11 inserted from each long groove 19 of the mounting board 13 into each mounting hole 8 of the vertical frame 5. It is attached.

In addition, the pipe body 1 of the left and right base plate 9
A sliding shaft 21, which is longer than the pipe body 18, is inserted into the inside of the pipe body 8 so as to be able to move forward and backward.
One end of a plate 22 facing the end surface 14 of the vertical frame 5 is fixed to the outer end of the plate 22, and a guide hole 23 through which the slide pin 20 is inserted is bored at the other end of the left and right plates 22. A guide roller 25 is rotatably mounted on a support shaft 24 protruding from the intermediate portion of the left and right plates 22, and a locking hole 26 is formed in the inner end of the sliding shaft 21.
A stopper pin 27 is inserted into. Thereby, the left and right guide rollers 25 are provided so as to be able to move forward and backward within a range in which the plate 22 does not come off the slide pin 20.

Next, the side hinge 3 is connected to the rotation center axis 2.
A pair of mounting frames 29 are rotatably attached via 8, and the pair of mounting frames 29 are fixed to opposing vertical frames 5 of the upper and lower panels 2 with bolts and nuts 30. In addition, in the side hinge 3 that connects the bottom panel 2 and the second panel 2 from the bottom, a guide roller 31 is rotatably mounted on the outer end of the rotation center shaft 28 of the side hinge 3. In each of the side hinges 3 above the side hinge 3 having the guide roller 31, the roller shaft 32 is attached to at least one side of the mounting frame 29 with a gap gradually separating from the vertical frame 5 toward the top. is horizontally mounted, and each roller shaft 32
A guide roller 33 is rotatably mounted on the outer end of the panel 2, and a guide roller 35 is rotatably mounted on the lower part of the vertical frame 5 of the lowermost panel 2 via a roller shaft 34. A drain seal 36 is fixed to the lower end of the lowermost panel 2.

Next, a pair of first guide rails 39 are attached to the left and right inner sides of the frontage 38 of the garage 37 facing each other. This pair of first guide rails 39
includes a vertical portion 41 that is slightly inclined inwardly and upwardly from the ground 40 to the height of the frontage 38, but extends generally vertically upward, and an upper portion of this vertical portion 41. It is formed to have a horizontal portion 43 extending inwardly and upwardly through the curved portion 42 in a substantially horizontal manner. Further, a pair of left and right second guide rails 44 facing the first guide rails 39 are attached to the upper portions of the pair of first guide rails 39 . The pair of second guide rails 44 have a curved portion 45 opposite to the curved portion 42 of the first guide rail 39 and a horizontal portion 43 opposite to the horizontal portion 43 of the first guide rail 39. It is formed with a horizontal portion 46 that is substantially parallel to the horizontal portion 46 . The first and second guide rails 39 and 44 have cross-sectional shapes that can engage the respective guide rollers 25, 31, 33, and 35 of the door body 1 and guide them up and down.

In this structure, when installing the door body 1 to the first guide rail 39 and the second guide rail 44 by on-site construction, first, the curvature of the left and right second guide rails 44 is determined. The base plates 9 of the left and right roller units A of the guide rollers 25 which are engaged with the left and right curved parts 45 according to the positions of the parts 45 are attached to the vertical frames 1 at both ends in the width direction of the uppermost panel 2 of the door body 1, respectively.
5, and in the set position, the left and right base plates 9 are fixed to the left and right vertical frames 5 with a plurality of bolts 10 and nuts 11. As a result, the top panel 2 of the door body 1
A second guide rail 4 is attached to the vertical frame 5 at both ends in the width direction.
The guide rollers 25 of the left and right roller units A can be adjusted to a position where they can engage with the curved portion 45 of the roller unit A.

Next, the uppermost left and right guide rollers 25 of the door body 1 are engaged with the curved portions 45 of the second guide rail 44, and the second and subsequent left and right guide rollers 31, 33, 35 are engaged with the vertical portions 41 of the left and right first guide rails 39. In this case, the top left and right guide rollers 2
5 is supported by a sliding shaft 21 and a slide pin 20 parallel to this sliding shaft 21, and is supported by an end surface portion 14 of the vertical frame 5.
Since the plate 22 is rotatably mounted on the intermediate portion of the plate 22 through a support shaft 24, the left and right plates 22 having the uppermost left and right guide rollers 25 cannot be rotated downward. By moving the left and right plates 22 back and forth, the uppermost left and right guide rollers 25 can be easily engaged with the curved portions 45 of the left and right second guide rails 44. . This allows the first
Although the vertical portion 41 of the guide rail 29 is slightly inclined, each guide roller 3 of the door body 1
1, 33, and 35 are mounted on shafts while being gradually spaced inward from the panel 2, so that the door main body 1 is in a vertical state and the frontage 38 is closed.

Next, when opening the frontage 38, when the door body 1 is pushed up, the door body 1 is moved to the first and second guide rails 39, 44 via each guide roller 25, 31, 33, 35. Then, from the vertical part 41, the horizontal part 4 passes through the curved parts 42 and 45.
3 and 46, the door body 1 is converted from a vertical state to a horizontal state and the frontage 38 is opened, but in this case, the uppermost left and right guide rollers 2
5 is located at an intermediate portion corresponding to the end surface portions 14 of the left and right vertical frames 5, and is moved along the second guide rail 44, and is moved along the second and subsequent guide rollers 3.
1, 33, and 35 are moved along the first guide rail 39, the uppermost panel 2 is pushed up from below and smoothly pushed upward, that is, without warping in the opposite direction. . In addition, the uppermost left and right guide rollers 25 are provided so as to be movable forward and backward via the sliding shaft 21 and the slide pin 20, so that the guide rollers 25 can move forward and backward with respect to the second guide rail 44 and are fully adaptable. Thus, the door body 1 can be engaged reliably at all times, and the vertical movement of the door body 1 can be smoothly guided.

[Effect of idea]

According to the present invention, a plurality of guide rollers that engage the left and right first guide rails vertically and vertically at both ends in the width direction of each panel of the door body are rotatably mounted on shafts, and the uppermost panel A roller unit having a guide roller that engages with the left and right second guide rails in a vertically movable manner is provided at both ends in the width direction, and the left and right roller units have a base plate having the guide roller at both ends in the width direction of the uppermost panel. Since it is mounted so that its position can be adjusted in the vertical direction, it is possible to easily adjust and set the uppermost left and right guide rollers by on-site construction so that they can engage with the curved part of the second guide rail. The upper left and right guide rollers are rotatably provided on the outer ends of sliding shafts that can move forward and backward through plates, so by moving the upper left and right guide rollers forward and backward, the second
The plate with the uppermost left and right guide rollers can be easily adapted to engage with the curved part of the guide rail of Since a slide pin parallel to the sliding axis is inserted inside and supported, the uppermost left and right guide rollers can be supported in a state where they are securely opposed to the end face of the uppermost panel. Even if there is an installation error in the left and right second guide rails, the uppermost left and right guide rollers can be simply and easily engaged with the curved portions of the left and right second guide rails. At the same time, it can be moved up and down smoothly and reliably.

In addition, the guide rollers on the left and right sides of the top are supported by sliding shafts and slide pins provided in parallel, and are rotatably mounted on a support shaft in the middle of the plate facing the end surface of the top panel. Because the panel is suspended, the panel with the guide roller will not warp in the opposite direction when pushed up from below, and therefore the top panel and the second panel will be frictionally connected via the hinge. Since the uppermost panel acts as a brake and the door body does not move up and down smoothly or becomes impossible, it can always be moved up and down smoothly and easily.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view of the overhead door in the construction state, Fig. 2 is an enlarged perspective view of a part of the same overhead door,
FIG. 3 is a side view of the same, and FIG. 4 is an exploded perspective view of the uppermost guide roller mounting structure. DESCRIPTION OF SYMBOLS 1... Door body, 2... Panel, 3... Hinge, 9... Base plate, 14... End face of panel, 20... Slide pin, 21... Sliding shaft,
22... Plate, 23... Guide hole, 24... Support shaft, 25, 31, 33, 35... Guide roller,
39...First guide rail, 41...Vertical portion, 42...Curved portion, 43...Horizontal portion, 44...
...Second guide rail, 45...Curved portion, 46...
...Horizontal part, A...Roller unit.

Claims (1)

[Scope of utility model registration request] A pair of first guide rails are arranged and fixed on the left and right sides and have vertical portions, and have a horizontal portion above the vertical portions via a curved portion, and above the pair of first guide rails. A pair of first guide rails are arranged and fixed on the left and right sides of the guide rail, and have a curved part facing the curved part of the first guide rail, and a horizontal part facing the horizontal part of the first guide rail. The second guide rail and a plurality of panels are connected via hinges, and a plurality of guide rollers that engage with the left and right first guide rails are rotatably mounted above and below both ends of the panel in the width direction. a door body provided with a roller unit having a guide roller that engages with the left and right second guide rails at both ends in the width direction of the uppermost panel;
The left and right roller units have base plates that are attached to both ends of the uppermost panel in the width direction so that their positions can be adjusted in the vertical direction, and a sliding shaft is attached to one side of the base plate so that the slide shafts can move back and forth in the width direction of the panel. a plate which is mounted on the base plate and has a slide pin protruding from the other side of the base plate in parallel with the sliding shaft, and which faces the widthwise end surface of the uppermost panel at the outer end of the left and right sliding shafts; One end of the plate is fixed, and the other end of the plate is formed with a guide hole through which the slide pin is inserted, and the guide roller is rotatably mounted between the left and right plates via a support shaft. An overhead door characterized by: