JPH0721276B2 - Shutter lowering device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manually openable shutter curtain installed in a building opening or a partition opening in a building, and a manually openable shutter curtain used for doors of other bus units. The present invention relates to a shutter lowering device in the initial stage of blockage.

[0002]

2. Description of the Related Art The above-mentioned manually openable shutter curtain comprises a large number of slats vertically connected to each other, and a balance spring for urging the shutter curtain in the winding direction is connected to the shutter curtain for easy and smooth opening and closing. It is configured to be able to.

A hole for hook engagement is formed in the lower seat plate of the shutter curtain, and a hook at the tip of a hook rod is engaged in this hole to pull down the seat plate to a position where it can be held by hand. I made a clue to pull down the shutter curtain to close it.

[0004]

However, in the shutter lowering device having such a structure, the hook rod requires a storage space, and the hook at the tip of the hook rod is engaged with a small hole in the seat plate at a high position. There was a problem in that the extremely difficult work of stopping it was forced.

[0005]

A shutter lowering device according to the present invention is provided to solve the above-mentioned inconvenience. In the first invention, the shutter lowering device is provided on the upper surface of the lower member of the shutter curtain. On the other hand, a shutter curtain pulling down member that is vertically slidable along the guide member is hung downwardly from the engaging member that can be engaged and disengaged, and the engaging member is released in a state where the pulling down operation for the shutter curtain pulling down member is released. It is characterized in that a return means for urging and returning to the initial engagement position is provided.

According to the second aspect of the invention, the shutter curtain pulling down member is provided so as to extend downward from the engaging member that is engageable with and disengageable from the upper surface of the lower side member of the shutter curtain, with the lower side member penetrating therethrough. A resetting means for locking the lower surface of the lower member at the lower end of the shutter curtain pulling down member, and for returning the engaging member to the initial engaging position with the shutter curtain open. It is characterized by the provision of.

[0007]

In any of the above-mentioned first and second inventions,
Since the engaging member is in the initial engaging position when the shutter curtain is fully opened, the shutter curtain can be pulled down simply by pulling down the pulling member.

In the shutter lowering device according to the first aspect of the present invention, functionally, the raising / lowering range of the engaging member may be set so that the shutter curtain can be pulled down to a position where the seat plate can be held by hand. The lifting stroke of the engaging member by the means can be minimized.

On the other hand, in the shutter lowering device of the second invention, since the retaining member is locked to the lower surface of the lower member in the fully closed state of the shutter curtain, the retaining member is continuously provided. The shutter curtain lowering member can be used as a clue for opening the curtain in the initial stage of opening the shutter curtain.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a manually openable shutter curtain, which can be moved up and down along guide rails 3 on both sides of an opening 2 of a building, which connects a large number of slats 4 vertically and seats on the lowest slats 4. It is formed by connecting the plates 5.

Reference numeral 6 denotes a fixed shaft installed above the opening 2, and two discs 7 for winding up the shutter curtain 1 are loosely fitted therein. Then, a balance spring 8 for biasing the shutter curtain 1 in the winding direction while maintaining a weight balance with the shutter curtain 1.
Are provided across the disk 7 and the fixed shaft 6.

The balance spring 8 has a spring torque set so as to urge the shutter curtain 1 in the opening direction in a range near the fully opened position of the shutter curtain 1. Based on the frictional resistance between the guide rail 1 and the guide rail 3 and the like, the shutter curtain 1 is stopped in a no-load state (a state in which an external opening / closing force is not applied).

Reference numeral 9 denotes a shutter lowering device which is used in the initial stage of closing the shutter curtain 1 and has the following structure. That is, as shown in FIGS. 3 and 4, a pair of hook-shaped guide members 10 are provided on one side surface of the left and right guide rails 3.
Is extruded integrally with the guide rail 3, and the shutter curtain pulling down member 11 is engaged slidably in the vertical direction along the guide member 10, and with respect to the upper surface of the seat plate 5 of the shutter curtain 1. The engaging member 12 that can be engaged and disengaged with the shutter curtain pulling member 11
Of the pulling-down member 11 is provided with a returning means 13 for biasing and returning the engaging member 12 to the initial engagement position A in the state where the pulling-down operation for the pulling-down member 11 is released. It is provided with an operating handle 14.

The returning means 13 includes a winding biasing means 19 formed by winding a hanging member 18 such as spring steel around a reel 17 fixed to a rotary shaft 16 around which a constant force spring 15 is wound. Installed on the upper side of the guide rail 3 of
A pulling member 11 is connected to the lower end of the suspending member 18, and a stopper 20 is provided to stop the engaging member 12 at the initial engaging position A against the biasing force of the constant force spring 15.

According to the above construction, since the engaging member 12 is in the initial engaging position A in the fully opened state shown in FIG. 5A, the operating handle 14 is grasped and pulled down by the pulling member 11.
The shutter curtain 1 can be pulled down by pulling down.

Next, as shown in FIG. 5 (B), the seat plate 5 is pulled down to a position where it can be held by hand, and the operating handle 14 is released in the state in which a clue for pulling down the shutter curtain is formed, and the rest is the seat plate. The shutter curtain 1 can be closed by holding and pulling 5. On the other hand, as shown in FIG. 5C, the operation handle 14 is lifted by the urging force of the constant force spring 15 until the engaging member 12 comes into contact with the stopper 20. By returning to the initial engagement position A, the shutter curtain 1 is prepared for the next closing.

As is apparent from this, in the shutter lowering device 9 having the above-described structure, the engaging member 12 of the engaging member 12 is functionally arranged so that the shutter curtain 1 can be pulled down to a position where the seat plate 5 can be held by hand. Since the raising / lowering range may be set, the lifting stroke of the engaging member 12 by the returning means 13 may be short.

6 and 7 show another embodiment of the shutter lowering device 9. The shutter lowering device 9 has a through hole a formed at one end side in the longitudinal direction of the seat plate 5 of the shutter curtain 1 and allows the pulling down member 11 to penetrate through the through hole a while the upper surface portion of the seat plate 5 is Engaging member 12
Is connected to the upper end of the shutter curtain pulling down member 11, and the pulling down member 11 is connected to the lower end of the pulling down member 11.
An operating handle 14 which also serves as a retaining member of 11 is provided, and a recessed portion b into which the operating handle 14 is engaged is formed on the lower surface of the seat plate 5.

A return means 13 comprising a stopper 20 and an urging means 19 having the above-mentioned constant load spring 15, suspension member 17 and the like is provided at the upper part of the opening 2, and the return means 13 has the above-mentioned structure. The engaging member 12 is connected to the lower end of the suspending member 17 so that the engaging member 12 is biased and returned to the initial engaging position A when the shutter curtain 1 is open.

According to the above construction, since the engaging member 12 is in the initial engaging position A in the fully opened state, the operation handle 14 also functioning as a retaining member is grasped and the pull-down member 11 is pulled down, whereby the shutter curtain 1 Can be pulled down.

Therefore, the seat plate 5 is pulled down to a position where it can be held by hand to make a clue for pulling down the shutter curtain, and the operation handle 14 is released to release the seat plate 5.
The shutter curtain 1 can be closed by pulling it down.

With the shutter curtain 1 closed, the operating handle 14 is in a state of being engaged with the recessed portion b and locked to the lower surface of the seat plate 5, and thus the operating handle 14 is connected. Since the shutter curtain 1 can be lifted by the installed pulling member 11, the pulling member 11 can be used as a clue for opening the curtain in the initial opening stage of the shutter curtain 1.

The pull-down member 11 may be made of metal or synthetic resin, but may be made of a twisted cord or a chain. Further, in the embodiment, the seat plate 5 is the engagement target of the engagement member 12, but it is also possible to separately provide a lower side member for engagement on the lower side of the shutter curtain 1.

[0024]

As described above, according to the present invention, since the shutter descent device is always provided in the manually opened and closed shutter curtain, the shutter descent device can be stored as well as the storage place is unnecessary. Since the engaging member is always in the initial engaging position when the shutter curtain is open, it is difficult to lock the hook at the tip of the hook rod into a small hole in the seat plate at a high position as in the conventional case. No work is required, and even old people and children can easily close the shutter curtain.

In the shutter lowering device of the first invention, the lifting stroke of the engaging member by the returning means can be suppressed to a necessary minimum, and in the shutter lowering device of the second invention, the shutter curtain pulling member is used as the shutter. It can be used as a clue for opening the curtain in the initial stage of opening the curtain.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a manually openable / closed shutter curtain showing a state of being closed.

FIG. 2 is a cutaway perspective view of a main part of a manually-openable shutter curtain.

FIG. 3 is a detailed view of a shutter lowering device.

FIG. 4 is a cross-sectional view of one of the left and right guide rails.

5A to 5C are explanatory diagrams of shutter curtain closure.

FIG. 6 is an overall configuration diagram of a manually-openable shutter curtain equipped with a shutter lowering device of another embodiment.

FIG. 7 is a detailed view of a shutter lowering device according to another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shutter curtain, 4 ... Slat, 5 ... Lower side member (seat plate), 10 ... Guide member, 11 ... Shutter curtain pulling down member, 12 ... Engaging member, 13 ... Returning means, 14 ... Detachment prevention member (operation handle) ), A ... Initial engagement position.

Claims (2)

[Claims] 1. A shutter lowering device at the initial closing stage of a manually openable shutter curtain in which a large number of upper and lower slats are connected to each other, wherein a guide is provided on an engaging member that is detachable from an upper surface of a lower member of the shutter curtain. A shutter curtain lowering member that is slidable in the vertical direction along the member is provided in a hanging manner, and a returning means for biasing and returning the engaging member to the initial engaging position in a state where the lowering operation for the shutter curtain lowering member is released. A shutter lowering device characterized by being provided. 2. A shutter lowering device at the initial stage of closing of a manually openable shutter curtain in which a large number of upper and lower slats are connected to each other, wherein the engaging member is detachably attached to an upper surface of a lower member of the shutter curtain. A shutter curtain lowering member is hung continuously in a state of penetrating the lower member, and a retaining member for locking the lower surface of the lower member is provided at the lower end of the shutter curtain lowering member, and the shutter curtain is opened. A shutter lowering device, further comprising a returning means for urging and returning the engaging member to an initial engaging position.