JP2564466Y2 - Electric overhead door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electric overhead door to be installed at an entrance of a building, a house, a garage, or the like.

[Problems to be Solved by the Related Art and the Invention] Conventionally, in an overhead door, a wire is fed from a winding drum stored by a coil ammunition, and the leading end of the wire is connected to a lowermost panel. The opening is opened and closed by feeding and winding the wire based on the rotation of the winding drum. Then, it is proposed to attach an electric switch to such an overhead door and open and close it.

However, when such an electric drive system is used, the wire is unreliable because of its strength and durability, so that in order to improve the reliability, the tip of the chain that meshes with the sprocket is connected to the lowermost panel. An attempt is made to make a chain. In this case, the power from the switch must be transmitted to the sprocket, and the power transmission mechanism from the switch to the sprocket must be arranged so as to interfere with the movement trajectory of the shutter curtain. Therefore, the conventional one is disposed above the ceiling curtain with respect to the locus of movement of the shutter curtain.

As a result, when installing an overhead door, it is necessary to secure these installation spaces on the ceiling on the skeleton side, and accordingly, there is a problem that the ceiling rail is lowered and the frontage opening height is reduced. It is necessary to form an inspection port for the operator to enter the side of the opening so that inspection and maintenance of the switchgear can be performed even when the shutter curtain is fully open, and this cannot be secured. By the way, there is a problem that it cannot be actually built.

[Means for Solving the Problems] In view of the above situation, the present invention has been made with the object of providing an electric overhead door that can eliminate these drawbacks, and is provided with an opening left and right. A vertically curved opening rail provided on both side edges, a ceiling rail provided on an indoor ceiling, and a rail curved portion which is formed in a substantially R shape at an upper portion of the opening to connect both rails. A substantially invertible L-shaped guide rail having a guide curtain for rolling the guide rail;
An actuating chain, the tip of which is connected to the left and right ends of the lowermost panel of the shutter curtain, respectively, and the actuating chains are hung respectively, and the left and right for opening and closing the shutter curtain by winding up and down the operating chain. A sprocket and
In configuring an electric overhead door, comprising an electrically driven switchgear and a transmission shaft rotatably mounted between the opening left and right to transmit power from the switchgear to the left and right sprockets, A switch and a transmission shaft are arranged in a lower area on the indoor side from the rail curved portion movement locus of the shutter curtain, and both left and right end portions of the transmission shaft protrude left and right outside the guide rail position, while a rail curved portion is provided. Each sprocket is disposed at a position on the left and right outside of the guide rail in the vicinity, and the respective sprockets and the left and right ends of the transmission shaft are interlockingly connected on the left and right sides of the rail curved portion.

Further, the present invention is characterized in that the lower end position of the switch or the transmission shaft is set to be substantially equal to or higher than the lower end position of the lowermost panel in the fully opened state. It is.

In the present invention, this configuration eliminates the need to secure a wide space for the switchgear and the power transmission mechanism in the ceiling on the skeleton side.

Next, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a shutter curtain of an overhead door, and the shutter curtain 1 is configured by connecting a plurality of panels 1a so as to be freely bent,
Reference numeral 2 denotes a pair of left and right guide rails. The guide rails 2 face a ceiling rail 2a disposed on the left and right sides of the ceiling in the front-rear direction and a vertical direction disposed on both left and right edges of the opening. The guide rail 2 is formed in a substantially inverted L-shape by an opening rail 2b that has been formed and a rail curved portion 2c that is formed in a substantially R-shape at the upper part of the opening. And the like, and the guide roller 3 protruding from the opening is rolled in the conventional manner, and the shutter curtain 1 is moved toward the opening rail 2b on the basis of the opening / closing drive described later. It is configured to open and close between a fully closed state located and a fully open state located on the side of the ceiling rail 2a.

Reference numeral 4 denotes a bracket which is integrally fixed to the left and right ends of the lowermost panel 1a. The bracket 4 integrally supports the support shaft 3a of the guide roller 3, but the bracket 4 A connecting arm 4a curved so as to bypass the guide rail 2 on which the guide roller 3 rolls from the indoor side.
The distal end of an operating chain 5 described later is integrally connected to the distal end of the connecting arm 4a via a pin 4b. Further, an auxiliary bracket 4c is formed on the bracket 4 so as to protrude so as to face the position of the guide rail 2, and the base end of the looseness detection arm 6 is swingable on the auxiliary bracket 4c via a support shaft 6a. The looseness detection arm 6 is supported so as to have a tip end thereof opposed to the operation chain 5, and is further directed in a direction in which the operation chain 5 is constantly pressed by the accumulating force of the twisting machine 6b. In addition, the looseness detecting arm 6 has a locking claw 6c integrally protruding toward the guide rail 2 side. On the other hand, a locking bracket 7 is integrally fixed to the guide rail 2 so as to face the locking claw 6c at a position where the shutter curtain 1 is in the fully closed state. And shutter curtain 1
When the shutter curtain 1 is normally fully closed, the operation chain 5 that suspends the shutter curtain 1 is tensed by the weight of the shutter curtain 1, and this exceeds the energy stored in the twisting machine 6b. Then, the looseness detection arm 6 is in a non-locked state in which the locking claw 6c does not interfere with the locking metal member 7. In this state, if the shutter curtain 1 is forcibly lifted without winding up the operation chain 5 by driving the switch described later, the operation chain 5 will be relaxed, and the looseness detection arm 6 will be turned to the twisting machine 6b. The operating chain 5 is swung while being pushed by the accumulating force of the locking claw.
The lock 6c is engaged with the lock fitting 7, and the lift is further locked. Thus, a lock mechanism for locking the lift of the shutter curtain 1 is configured.

Reference numeral 8 denotes left and right bearings which are located on the left and right outer portions of the curved rail portion 2c of the guide rail 2 and are attached to the skeleton side. A transmission shaft 9 is rotatably mounted between the left and right bearings 8. However, the position of the axle is the indoor lower portion of the movement trajectory of the rail curved portion 2c of the shutter curtain 1 and, furthermore, when the shutter curtain is fully opened, the lower end position A of the lowermost panel 1a. It is set to be at a high position. Further, one of the left and right bearing brackets 8 includes
Like the transmission shaft 9, the switchgear 10 is mounted in a lower area on the indoor side of the movement locus of the rail curved portion 2c of the shutter curtain 1 so as to protrude into the opening,
Although the switch 10 is always visible with the transmission shaft 9, the lower end of the switch 10 is substantially the same height as the lower edge position A of the lowermost panel 1 a when fully opened. Is set. The output shaft 10a and the side end of the transmission shaft 9 are linked to each other via a chain transmission mechanism 11.

Reference numeral 12 denotes a support shaft 12 facing the left and right bearing fittings 8 in the left-right direction.
a sprocket which is rotatably supported by a. The mounting position of the sprocket is in the vicinity of the left and right outer sides of the rail curved portion 2c (the left and right outer sides of the movement trajectory of the shutter curtain 1). ), But the sprocket 12 and the left and right ends projecting outward in the left-right direction from the rail curved portion 2c of the transmission shaft 9 are the same as the chain transmission arranged in the left-right direction outside the guide rail 2. It is interlocked and connected via a mechanism 14. And sprocket
12, the operating chain 5 is suspended, and the opening and closing operation of the shutter curtain 1 is performed by lifting and lowering the operating chain 5 in accordance with the forward / reverse drive of the switch 10. When the operation chain 5 is suspended from the sprocket 12, the indoor side, on which the ceiling rail 2 a extends, is connected to the lowermost panel 1 a, and the outdoor side is extended from the rocket 12 with the opening operation of the shutter curtain 1. The working chain 5 extended from the sprocket 12 is located outside the working chain 5 connected to the lowermost panel 1a. is there.

Numeral 13 is a chain guide having a cylindrical shape. The chain guide 13 has a lowermost panel so that the operating chain which is drawn out of the sprocket 12 and hangs down when the shutter curtain 1 is opened is automatically fitted and stored. It is disposed vertically at a position outside of the working chain 5 connected to 1a. In addition, a weight 15 for anti-vibration is connected to the base end of the working chain 5 stored in the chain guide 13,
Needless to say, this is not always necessary, or it can be further developed as a balance weight of the shutter curtain 1.

In the embodiment of the present invention configured as described above, as described above, the opening and closing operation of the shutter curtain 1 is performed by rotating the sprocket 12 based on the forward / reverse drive of the switch 10, and the operating chain 5 is wound up and down. As a result, the switch 10 and the transmission shaft 9 are arranged in the indoor lower area, not in the outdoor upper area of the movement trajectory of the rail curved portion 2c of the shutter curtain 1. . Therefore, when installing the overhead door in the opening, it is not necessary to secure a space for disposing the switchgear 10 and the transmission shaft 9 above the guide rail 2 on the ceiling side. The connection to
Since the transmission is performed so as to pass through the outer side in the left-right direction of the guide rail 2, the transmission shaft 9 and the switch 10 can be arranged in the lower area on the indoor side without interfering with the movement trajectory of the shutter curtain 1. In addition, the sprocket 12 can be brought close to the rail curved portion 2c without being affected by the movement trajectory of the shutter curtain 1. As a result, the ceiling rail 2a can be installed as close as possible to the ceiling surface on the skeleton side, so that the ceiling storage position of the shutter curtain 1 when fully opened is higher, and the height of the opening is also higher. It will be higher together.

In addition, since the switchgear 10 and the transmission shaft 9 are arranged in a dead space, that is, a lower area on the indoor side of the locus of movement of the rail curved portion 2c of the shutter curtain 1, even if this is visually observed indoors, the appearance is hardly affected. In addition to this, the maintenance of the switchgear 10 can be easily performed even when the switchgear 10 is fully opened because the switchgear 10 is disposed indoors, and the workability can be improved.

As described above, the lower end of the switchgear 10 and the transmission shaft 9 arranged on the indoor side are substantially equal to or higher than the lower end position A of the lowermost end panel 1a in the fully opened state of the shutter curtain 1. The effective front height of the opening is not determined by the switchgear 10 and the transmission shaft 9 disposed on the indoor side, but by the panel 1a on which makeup is applied. There is no discomfort, and there is no problem in appearance.

In implementing the present invention, when the upper end edge of the opening on the skeleton side is lower than the lower end position of the lowermost panel 1a in the fully opened state of the shutter curtain 1, the lower end positions of the switchgear 10 and the transmission shaft 9 are changed. Needless to say, it is preferable to set the upper end of the opening on the skeleton side to a position substantially equal to or higher than this.

[Effects] In summary, since the present invention is configured as described above, it is highly reliable that the opening and closing operation of the shutter curtain is performed by the operation chain. Space for installing these switches and transmission shafts when constructing the overhead door in the opening as a result of being located in the lower area on the indoor side instead of the upper area on the ceiling of the curtain movement trajectory in the curved part of the rail. It is no longer necessary to secure the ceiling rail above the guide rail and the ceiling rail can be installed as close as possible to the ceiling surface on the skeleton side, and the ceiling storage position of the shutter curtain when fully opened is higher. The height of the opening also increases accordingly.

Since the connection between the transmission shaft and the sprocket is performed outside the guide rail in the left-right direction, the transmission shaft and the switch can be arranged in the lower area on the indoor side without crossing the movement locus of the shutter curtain. Absent.

In addition, since the switchgear and the transmission shaft are disposed by effectively utilizing the dead space of the indoor locus lower part of the movement trajectory in the curved portion of the rail, even if this is visually observed indoors, it has almost no effect on the appearance. There is no maintenance, and since these are located indoors, they can be easily performed even when fully open, and workability can be improved.

[Brief description of the drawings]

The drawings show an embodiment of an electric overhead door according to the present invention, wherein FIG. 1 is a schematic front view of the overhead door, FIG. 2 is a plan view of the same, and FIG. 3 is a side view of the same. , FIG. 4 is a front view of an operation chain connecting portion of the lowermost panel, FIG. 5 is a plan view of the same, FIG. 6 is a side view of the same, FIG. 7 is an enlarged side view of a curved portion of the rail, and FIG. FIG. 9 is an enlarged horizontal sectional view of the chain guide portion, FIG. 10 is a schematic perspective view of the overhead door, FIG. 11 is a perspective view of the locking mechanism, and FIG. 12 is a perspective view of the rail bending portion. It is. In the figure, 1 is a shutter curtain, 1a is a panel, 2 is a guide rail, 2a is a ceiling rail, 2b is an opening rail, 2c is a curved rail, 3 is a guide roller, 5 is an operating chain, 9
Is a transmission shaft, 10 is a switchgear, 12 is a sprocket, and 13 is a chain guide.

Claims (2)

(57) [Scope of request for utility model registration] 1. A vertically oriented opening rail provided on both left and right side edges of an opening, a ceiling rail provided on an indoor ceiling, and a substantially R-shaped upper portion of the opening to connect both rails. A substantially reverse L-shaped guide rail having a rail curved portion formed to be bent, and a shutter curtain formed by connecting a panel in which guide rollers for rolling the guide rail are attached to both right and left edges so as to be freely bent; Actuating chains whose tips are respectively connected to the left and right of the lowermost panel of the shutter curtain,
Each of the operating chains is suspended, and the right and left sprockets for opening and closing the shutter curtain by winding and unwinding the operating chains, an electrically driven switchgear, and the power from the switchgear to the left and right sprockets. When the electric overhead door is provided with a transmission shaft rotatably mounted between the left and right sides of the opening to transmit the power, a switchgear is provided in the indoor lower region from the locus of the curved rail of the shutter curtain. And the transmission shaft is arranged, and both right and left ends of the transmission shaft protrude left and right outward from the guide rail position,
An electric over-type, wherein each sprocket is disposed at a position on the left and right outside of the guide rail in the vicinity of the rail curved portion, and the respective sprockets and the left and right ends of the transmission shaft are interlocked and connected on the left and right outside of the guide rail. Head door. 2. The apparatus according to claim 1, wherein the lower end position of the switch or the transmission shaft is set to be substantially equal to or higher than the lower end position of the lowermost panel in the fully opened state. And electric overhead door.