JPH071511Y2 - Building shutter opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a shutter opening / closing device for buildings, and is particularly useful as a shutter for a simple garage or a garage.

[Conventional technology]

As shown in FIG. 3, this type of shutter is constructed such that a shutter door body is movably engaged with a guide rail having a vertical portion standing on both sides of a frontage and a horizontal portion extending rearward from the upper portion of the shutter door. It is known that a coil spring is stretched between the upper end of the body and the rear of the guide rail. (For example, Japanese Utility Model Laid-Open No. 64-50594) [Problems to be solved by the invention] A shutter door body is movably engaged with a guide rail having a vertical portion and a horizontal portion continuous with the vertical portion, and this door body is guided by the guide rail. When operated by the coil spring in the rear part of, when the shutter door body transitions between the vertical part and the horizontal part,
Since the load applied to the coil spring changes remarkably, the movement of the shutter door body becomes irregular, and there is a drawback that the opening / closing operation cannot be performed smoothly.

[Means for Solving the Problems]

As a result of repeated studies in view of such circumstances, the present inventor found that
In a building shutter in which a shutter door body is movably engaged with a guide rail that has a vertical portion arranged on both sides of the frontage and a horizontal portion that curves from the upper end of the vertical portion and extends rearward, the horizontal portion of both guide rails The upper end of the shutter door is connected to the housing that is movably engaged with the housing, and the rotating shaft having the large diameter winding portion and the small diameter winding portion is supported inside the housing, and the large diameter winding portion of the rotation shaft is supported. Guide the rope wound around to the side end of the housing, and guide the end to the rear of the horizontal part of the guide rail to fix it, and stretch the rope wound around the small diameter winding part of the rotating shaft inside the housing. The intended purpose is achieved by binding the coil spring to one end.

[Action]

This plan supports a rotating shaft having a large diameter winding portion and a small diameter winding portion inside the housing, and guides the rope wound around the large diameter winding portion of the rotation shaft to the side end of the housing to guide the guide rail. The rope is guided to the rear of the horizontal part and fixed, and the rope wound around the small diameter winding part of the rotating shaft is bound to one end of the coil spring, so the ratio of the expansion / contraction distance of the coil spring to the movement distance of the shutter door body is Corresponding to the ratio of the size of the large-diameter winding portion and the small-diameter winding portion of the rotating shaft, the length of the coil spring can be significantly reduced.Therefore, store the coil spring inside the housing arranged between the guide rails. When the shutter door body is pulled up from the closed state, the coil spring is applied with a force that draws in the housing and its housing in addition to the shutter door body, and the movement of the shutter door body is suppressed. Movement slows down and the drainage part makes strong contact with the stopper. It is possible to avoid the trouble.

〔Example〕

FIG. 1 and FIG. 2 show an example of a shutter opening / closing device for a building of the present invention, in which girders (2) (2) are erected on tops of columns (1) (1). In a simple garage in which a member (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 the girder ( 2) Inside the (2), a guide rail (5) (5) having a vertical section (6) and a horizontal section (7) which is curved from the upper end of the vertical section and extends rearward inward is formed.
The shutter door body (9) formed by fitting the shutter slats (8) (8) to the guide rail (5)
Engaging between (5) and connecting the upper end of the shutter door body (9) to a housing (10) provided movably between the horizontal portions (7) of the guide rails (5) and (5), The rotating shaft (12) having the large diameter winding portion (13) and the small diameter winding portion (14) is supported by the brackets (11) (11) on both sides of the housing, and the large diameter winding of the rotation shaft (12) is supported. The rope (15) wound around the portion (13) is attached to the bracket (11) via the pressing roller (16) and the rope wheel (17) provided on the upper side end of the casing (10) to the side of the casing. Guide the rope (18) to the end and guide it to the rear end of the horizontal part of the guide rails (5) (5) to secure it, and attach the rope (18) wound around the small diameter winding part (14) of the rotating shaft (12). Inside the housing, one end thereof is bonded to a coil spring (19) supported by a bracket (11) on the opposite side.

The conventionally known opening / closing device for a building shutter shown in FIG. 3 has guide frames (4) and (4) installed upright in the front,
This guide frame (4) (4) and the vertical part (6) inside the girder
And guide rails (5) (5) having a concave cross-section having a horizontal portion (7) which is curved from the upper end of the vertical portion and extends rearward inwardly, and shutter slat (8) (8) ... Use the shutter door body (9) to guide rails (5) (5)
And a rope (20) extending from both sides of the upper end of the shutter door body (9) to the horizontal portion (7) along the guide rails (5) and (5). The coil spring (19) (19) is applied to the horizontal part (7) of 5), and the rope (20)
Is suspended on a pulley (21) attached to the front part of the coil spring (19), and the end of the rope is fixed to the upper front part of the horizontal part (7).

(22) in the figure represents a rope stopper.

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. In addition, since the coil spring is housed in the housing engaged with the horizontal portion of the guide rail and the rope is guided from the side end portion of the housing to the guide rail, the operation can be performed safely. Practical effects are remarkable, such as a dramatic increase in aesthetics.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view in which a main part of the device of the present invention is developed, FIG. 2 is a plan view in which a part thereof is also omitted, and FIG. 3 is a vertical cross-sectional view showing a conventional shutter opening / closing device. 5) is a guide rail, (9) is a shutter door body, (10) is a housing,
(12) is a rotary shaft, (13) is a large diameter winding portion, (14) is a small diameter winding portion, (15) and (18) are ropes, and (19) is a coil spring.

Claims (1)

[Scope of utility model registration request] 1. A building shutter in which a shutter door body is movably engaged with a guide rail having vertical portions arranged on both sides of a frontage and horizontal portions curving from the upper ends of the vertical portions and extending rearward. The upper end of the shutter door is connected to the housing that is movably engaged with the horizontal part of the guide rail, and the rotating shaft having the large-diameter winding portion and the small-diameter winding portion is supported inside the housing. The rope wound around the large-diameter winding section is guided to the side end of the housing, and the end is guided to the rear of the horizontal portion of the guide rail and fixed, and the rope wound around the small-diameter winding section of the rotary shaft is housing. An opening / closing device for a building shutter, which is attached to one end of a coil spring stretched inside the building.