JPH0512592U - Overdoor fall prevention device - Google Patents

Abstract

(57) [Abstract] [Purpose] A fall prevention device for a shutter curtain that is released by installing the middle pillar of an overdoor, and has a simple structure and facilitates the work of installing the middle pillar. [Structure] A horizontal rail 2 provided along a ceiling, and a vertical rail 6 provided on movable center pillars 4 and 5 and capable of continuing with the horizontal rail, and a shutter curtain 25 serving as the horizontal rail. In an overdoor that can be opened and closed along a vertical rail, a slide plate 16 is provided at the lower end of an upper end receiving portion 9 provided at the tip of the horizontal rail so as to be slidable in a direction perpendicular to the horizontal rail. A locking portion 19 is formed on the slide plate for urging the plate in the protruding direction with respect to the upper end receiving portion and blocking the passage of the horizontal rail, and the middle pillar is released for engaging with the protruding portion of the slide plate. A pin 24 is provided so that when the center pillar is moved, it projects in a free state with respect to the slide plate, the locking portion of the slide plate blocks the passage of the horizontal rail, and the release pin slides when the center pillar is installed. Engage the projection of de plate, pushing the slide plate, the locking portion is open the passage of the horizontal rail.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an overdoor that stores a shutter curtain along a ceiling, and more particularly to an overdoor fall prevention device for an overdoor provided at a doorway of a wide entrance.

[0002]

[Prior Art]

 One of the shutter curtains for buildings is an over door that is configured by flexibly connecting a required number of panels to form a shutter curtain and stores the shutter curtain along the ceiling. When this overdoor door is installed at the entrance of a wide frontage, a plurality of shutter curtains are installed in a row in the width direction, a center pillar is movably installed at the entrance, and a middle pillar is erected when closing the entrance. It guides the shutter curtains and connects adjacent shutter curtains.

A conventional overdoor provided at the entrance of a wide frontage will be described with reference to FIG. In FIG. 5, the shutter curtain is omitted for the sake of simplicity.

A horizontal rail 2 is provided along the ceiling 1, a fixed vertical rail 3 is provided at the entrance-side pillar, and a movable vertical rail 6 is provided at the middle pillars 4 and 5. The middle pillars 4 and 5 are suspended by guide rails (not shown) provided along the entrance and exit Kamoi and are movable. In FIG. 5, the middle pillar 4 is in the attached state, and the middle pillar 5 is in the moving state.

A wire drum 8 biased in the winding direction by a balance spring 7 is provided above the entrance. The wire delivered from the wire drum 8 is attached to the shutter curtain (not shown) so that the weight of the shutter curtain and the winding force of the balance spring 7 are balanced.

A guide roller is provided at the panel bending portion of the shutter curtain, and the guide roller engages with the horizontal rail 2, the fixed vertical rail 3, and the movable vertical rail 6, and ascends and descends along these rails. It is like this.

With such an over door, if the shutter curtain is lowered by accident or for some reason, with the shutter curtain housed in the horizontal rail 2 and the center pillar moved, the movable door is moved. The shutter curtain lowers without being guided by the vertical rail 6, which is a problem, and when the shutter curtain is to be raised next time, all the guide rollers must be manually engaged with the horizontal rail 2. There is the trouble of not being able to. Therefore, in some conventional overdoors for entrances and exits of a wide frontage, a fall prevention device is provided at the tip of the horizontal rail so that the shutter curtain does not descend when the center pillar is moved. ..

A conventional fall prevention device will be described with reference to FIGS. 6 and 7.

Reference numeral 9 denotes an upper end receiving portion to which the middle pillar is connected, and the ends of the horizontal rails 2 are fixed to both sides of the upper end receiving portion 9. A slide link 10 which is slidable in the vertical direction is provided at the center of the upper end receiving portion 9, and the lower end of the slide link 10 projects downward from the upper end receiving portion 9 in a free state. One end of a pair of L-shaped lever links 11 symmetrically arranged is engaged with the slide link 10, and the other end of the lever link 11 is connected to a stopper pin 12 slidably provided in the horizontal direction. It is engaged.

A spring 13 for urging the stopper pins 12 in a separating direction is provided between the stopper pins 12 and 12, and the slide link 10 has a spring for urging the slide link 10 downward. 14 are provided.

When the center pillar is moved, the stopper pin 12 is in a state of protruding toward the horizontal rail 2 side, and the stopper pin 12 prevents the shutter curtain from descending.

When the middle pillar is connected to the upper end receiving portion 9, the middle pillar is moved to a position below the upper end receiving portion 9, and then the middle pillar is lifted and installed. By raising the middle pillar, the slide link 10 is raised by the middle pillar, and in conjunction with the slide link 10, the stopper pin 12 is drawn into the upper end receiving portion 9 from the horizontal rail 2 and the shutter curtain Can be raised and lowered freely.

[0013]

[Problems to be solved by the device]

 In the above-mentioned conventional fall prevention device, the number of parts is large, the structure is complicated, the cost is high, and the assembling workability is poor. Also, since the middle pillar is installed by lifting it up, it is difficult to check whether it is installed correctly, and the middle pillar is heavy and the lifting work is a laborious task. ..

In view of the above situation, the present invention is to provide a shutter curtain fall prevention device which has a simple structure and is easy to install when installing a center pillar.

[0015]

[Means for Solving the Problems]

 The present invention has a horizontal rail provided along a ceiling and a vertical rail that is provided on a movable center pillar and is continuous with the horizontal rail, and a shutter curtain is provided along the horizontal rail and the vertical rail. In an openable and closable overdoor, a slide plate is provided at the lower end of an upper end receiving portion provided at the tip of the horizontal rail so as to be slidable in a direction perpendicular to the horizontal rail, and the slide plate is used as the upper end receiving portion. The slide plate is provided with a locking portion for blocking the passage of the horizontal rail, and the middle pillar is provided with a release pin for engaging with the projection portion of the slide plate. It is a feature.

[0016]

[Action]

 When the center pillar is moving, the slide plate protrudes, and the locking portion of the slide plate blocks the passage of the horizontal rail. Pushing in, the locking portion opens the passage of the horizontal rail.

[0017]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, those having the same functions as those shown in FIGS. 6 and 7 are designated by the same reference numerals, and the description thereof will be omitted.

A slide plate 16 is slidably provided on the lower end surface of the box-shaped upper end receiving portion 9. A guide roller 17 is pivotally attached to the upper surface of the slide plate 16, and the guide roller 17 is brought into rolling contact with the inner surface of the upper end receiving portion 9.

On both sides of the slide plate 16, a locking portion 19 is extended from a lower end cutout portion 18 of the upper end receiving portion 9, and the locking portion 19 slides on the slide plate 16. By means of this, it is possible to enter and leave the passage of the horizontal rail 2. The tip of the slide plate 16 has a trapezoidal shape with both corners cut off, and a spring bridge 20 is fixed to the tip. A notch 21 is formed at the rear end of the slide plate 16, and a spring receiver 22 fixed to the lower end surface of the upper end receiving portion 9 is slidably fitted in the notch 21. ..

A compression spring 23 is sandwiched between the spring receivers 20 and 22 to urge the slide plate 16 in the protruding direction. Thus, the state in which the slide plate 16 is projected is the state in which the center columns 4 and 5 have moved, and in this state, the locking portion 19 is in a state of blocking the passage of the horizontal rail 2.

Next, a release pin 24 is provided on the indoor side of the middle pillars 4 and 5, and the release pin 24 abuts on the protruding portion of the slide plate 16.

The operation will be described below.

FIG. 2 shows a state where the center columns 4 and 5 are moved. When the center columns 4 and 5 are connected to the upper end receiving portion 9, the center columns 4 and 5 are moved leftward in the figure. ..

When the inner pillars 4 and 5 move, the release pin 24 contacts the slide plate 16 and pushes the slide plate 16 with the movement of the release pin 24. FIG. 4 shows a state in which the center columns 4 and 5 are installed. In this state, the slide plate 16 is completely pushed in, and the locking portion 19 is completely removed from the passage of the horizontal rail 2. Thus, the guide roller 26 provided on the shutter curtain 25 can be freely transferred from the horizontal rail to the vertical rail.

As described above, in this embodiment, it is possible to prevent the shutter curtain from falling and to release it by sliding only one slide plate.

Needless to say, the shape of the slide plate, the mounting method of the spring for urging the slide plate, and the like are not limited to those in the above embodiment, and various changes can be made.

[0028]

[Effect of the device]

 As described above, according to the present invention, the number of parts is small, and the shutter curtain can be prevented from falling and released by sliding only one slide plate. The installation does not require a lifting operation simply by moving it in the horizontal direction, so the installation work can be facilitated and ensured, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a view on arrow B of FIG.

4 is a view on arrow B of FIG. 1. FIG.

FIG. 5 is an explanatory diagram of an overdoor.

FIG. 6 is a plan view of a conventional example.

FIG. 7 is a side view of a conventional example.

[Explanation of symbols]

 2 Horizontal rail 4 Middle pillar 5 Middle pillar 6 Movable vertical rail 9 Upper end receiving part 16 Slide plate 19 Locking part 23 Compression spring 25 Shutter curtain

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location E06B 9/84

Claims (1)

[Scope of utility model registration request] 1. A horizontal rail provided along a ceiling,
An overdoor provided on a movable center pillar, having a horizontal rail and a continuous vertical rail, and capable of opening and closing a shutter curtain along the horizontal rail and the vertical rail, at the tip of the horizontal rail. A slide plate is provided at the lower end of the provided upper end receiving portion so as to be slidable in a direction perpendicular to the horizontal rail, and the slide plate is biased in a protruding direction with respect to the upper end receiving portion and the horizontal rail is attached to the slide plate. An overdoor fall prevention device, characterized in that a locking portion for blocking the passage is formed, and a release pin that engages with the protruding portion of the slide plate is provided on the middle pillar.