JPH0650637Y2 - Building shutter opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a shutter opening / closing device for a building, and is particularly effective for a shutter for a simple garage or a garage.

[Conventional technology]

As shown in FIG. 6, this type of shutter is configured such that a shutter door body is movably engaged with a guide rail having vertical portions that are erected on both sides of a frontage and horizontal portions that extend rearward from the upper portion of the shutter. It is known that a coil spring is stretched between the upper end of the door and the rear of the guide rail. (For example, Japanese Utility Model Laid-Open No. 64-50594) In addition, when the shutter door is moved along the guide rail, a spiral leaf spring device in which a leaf spring is wound between a drive reel and a take-up reel supported by a bracket is provided. Using, the opening and closing device that operates via a rope between the shutter door body,
It is described in JP-A-54-86939 and JP-A-60-31268.

[Problems to be solved by the device]

On a guide rail that has a vertical part and a horizontal part continuous with this,
When the shutter door body is movably engaged and this door body is actuated by the biasing force of the coil spring, the load applied to the coil spring changes significantly when the shutter door body moves between the vertical part and the horizontal part. As a result, the shutter door body moves irregularly, which makes it difficult to open and close the door smoothly.

In the case of using a spiral leaf spring device in which a leaf spring is wound between a drive reel and a take-up reel supported by a bracket instead of a coil spring, the tension of the spring does not greatly change.
Although it can operate more smoothly than a door body using a coil spring, if the spiral plate spring is given the same tension as the force to pull down the shutter door body, most of the door body will move to the horizontal part of the guide rail. When moving to, there is a drawback that the movement of the door body is accelerated and the water draining portion of the shutter door body impacts the stopper, and the door body is damaged or a loud unpleasant sound is emitted.

[Means for Solving the Problems]

As a result of repeated studies in view of such circumstances, the inventors of the present invention have found that a guide rail having a recessed section has a vertical portion arranged on both sides of the frontage and a horizontal portion slightly curved rearwardly extending from the upper end of the vertical portion. In a shutter in which the shutter door body is movably engaged, a housing in which the shutter door body is movably engaged with the horizontal portion of the guide rail is connected to the upper end portion of the shutter door body, and the drive reel supported by the bracket and the winding A spiral leaf spring device, in which a leaf spring is wound between reels, is fixed to the inside of the housing, and a rope wheel is installed at the side end of the housing, and the rope wound around the shaft portion of the drive reel is placed in the recess of the guide rail. The intended purpose is achieved by guiding and fixing the rope at a position behind the horizontal portion of the guide rail.

[Action]

According to this invention, the upper end of the shutter door is connected to the housing movably engaged with the horizontal portion of the guide rail, and the leaf spring is wound between the drive reel and the take-up reel supported by the bracket. The spiral leaf spring device is fixed to the inside of the housing, the rope wheel is installed at the side end of the housing, and the rope wound around the shaft of the drive reel is guided to the recess of the guide rail. Because it is fixed in the rear position,
When the shutter door body is pulled up from the closed state, even if the door body shifts from the vertical portion to the horizontal portion, the spiral leaf spring has a force that pulls in the self weight of the spiral leaf spring device and the housing in addition to the shutter door body. In addition, since the movement of the shutter door body is suppressed, it is possible to avoid the trouble that the movement of the door body slows down and the drainage portion comes into strong contact with the stopper.

〔Example〕

1 to 5 show an example of a shutter opening / closing device for a building of the present invention, in which girders (2) and (2) are erected on the tops of columns (1) (1). In a simple garage in which (3) is stretched, guide frames (4) and (4) are erected at an opening parallel to the columns (1) and (1), and the guide frames (4) and (4) and girders (2) are installed. ) Inside the (2), a guide rail (5) (5) having a concave section, having a vertical portion (6) and a horizontal portion (7) which is curved from the upper end of the vertical portion and extends rearward inward.
The shutter door body (9) formed by fixing the shutter slats (8) (8) having male and female joints is movably engaged with the guide rails (5) (5). Then, the housing (10) is connected to the upper end of the shutter door body (9), and this is connected to the horizontal portion (7) of the guide rails (5) (5).
A spiral leaf spring in which leaf springs (15) and (15) are wound between a drive reel (13) and a take-up reel (14) (14) which are movably engaged with the bracket and are supported by a bracket (12). The device (11) is fixed to the inside of the housing (10) as a pair of left and right, and the drive reel (1
3) Attach the rope (1) to the winding drum (16) (16) provided on the shaft of (13).
7) Wrap (17) and attach the rope wheel (1) to the side edge of the housing (10).
8) (18) is mounted so that it is almost at the same height as the shutter door body (9), guides the ropes (17) and (17) into the recesses of the guide rails (5) and (5), and moves backward in the guide rails. It is fixed to the rear portion of the horizontal portion of the guide rails (5) and (5).

In the figure, (19) is a drainage part of the shutter door body, (20) is a guide roller, (21) is a stopper, (22) is a rope stopper, and (23) is a coil spring.

In implementing the present invention, a door body made of a pipe shutter may be used instead of the door body made of shutter slats, and the linear rope may be replaced with a chain rope.

[Effect of device]

According to the device of the present invention, it is possible to smoothly perform the opening and closing operation of the shutter door body, and particularly when the door body is moved up and stored at the ceiling position, the movement of the shutter door body is restricted to produce an unpleasant impact sound. Since it does not occur, the spiral leaf spring device is housed in a housing engaged with the horizontal part of the guide rail, and the rope connected to the spiral leaf spring device is guided to the guide rail by a rope car, so the operation is safe. The practical effect is remarkable as it can be performed and the aesthetic appearance is dramatically increased.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing a main part of the device of the present invention in an expanded manner, FIG. 2 is a plan view in which a part of the device of the present invention is partially omitted, FIG. 3 is a longitudinal sectional view of the same, and FIG. 4 is a spiral leaf spring of the present invention. An enlarged plan view of the device,
FIG. 5 is an enlarged side view in which a part is also omitted, and FIG. 6 is a vertical cross-sectional view showing a conventional shutter opening / closing device. In the figure, (5) is a guide rail, (9) is a shutter door body, 1
(0) is a housing, (11) is a spiral leaf spring device, (12) is a bracket, (13) is a drive reel, (14) is a take-up reel, (1)
5) is a leaf spring, (17) is a rope, and (18) is a rope wheel.

Claims (1)

[Scope of utility model registration request] 1. A building in which a shutter door body is movably engaged with guide rails having a concave cross section having vertical portions arranged on both sides of a frontage and horizontal portions slightly curved and extending rearward from upper ends of the vertical portions. In the shutter, a housing that is movably engaged with a horizontal portion of a guide rail is connected to an upper end portion of a shutter door body, and a leaf spring is wound inside the housing between a drive reel and a take-up reel supported by a bracket. The spiral leaf spring device attached is fixed, a rope wheel is provided at the side end of the housing, the rope wound around the shaft of the drive reel is guided to the recess of the guide rail, and the rope is placed behind the horizontal portion of the guide rail. An opening and closing device for building shutters, which is fixed in position.