JPH044460Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a shutter that prevents the slats of the shutter body that are closed during a fire from expanding and softening due to the heat of the fire and bending the central part. This invention relates to a deflection prevention device.

[Prior art and its problems]

In the event of a fire, the fire door is closed to prevent the fire from spreading.

However, when a fire approaches the shutter, the slats forming the shutter body are heated to high temperatures, expand, and soften, causing the center of the shutter body to flex.

At this time, if the upper part of the shutter body is held by the winding shaft and both left and right ends are securely held by the guide rails, the flexure of the central part will cause the interface connecting the slats to move. It is believed that this will prevent fire from penetrating the shutter body for a long time if the lock part comes off.

However, in the case of a shutter with a large inner width, the heat of the fire will cause the winding shaft itself to flex significantly, which not only significantly weakens the force holding the upper part of the shutter body, but also causes the shutter body to flex. Additionally, as a result of this, the holding force of the guide rail also weakens, causing the problem that the interlock portion comes off in a relatively short period of time, causing a fire to penetrate.

In view of this problem, the inventor has conducted various experiments and research, and has found that the best way to solve the problem is to hold the slats of the closed shutter body horizontally along the lintel. It was confirmed that there is.

By the way, in Utility Model Publication No. 52-51886,
When the shutter body is closed, the L-shaped fittings extending along the longitudinal direction of the slats of the shutter body and the L-shaped fittings extending along the lintel are engaged with each other. A ``fire and smoke prevention device for a shutter'' is disclosed that completely seals the gap between the shutter and the lintel to prevent fire and smoke from entering through the gap.

Therefore, the present inventor applied the two L-shaped fittings shown in the prior art to experimentally create a "shutter deflection prevention device" that holds the slats of the shutter body horizontally using the lintel. However,
It has been found that it is very difficult to properly engage the two L-shaped fittings with each other.

That is, depending on the type and size of the shutter, the distance between the shutter mounting wall where the lintel is provided and the surface of the slat of the shutter body differs depending on the installation site. The attached L-shaped fittings and the L-shaped fittings attached along the surface of the slats may not engage properly.

In this case, it is extremely troublesome to replace the L-shaped fittings once they have been installed, and it is very uneconomical to have to stock L-shaped fittings of various sizes depending on the spacing.

In addition, if the mounting position of each L-shaped fitting is slightly shifted vertically, for example, the L-shaped fitting attached to the lintel
The mounting position of the mold fittings is L, which is attached to the slat.
If the height is too high for the mounting position of the shutter body, both L-shaped brackets will engage with each other before the seat plate at the bottom of the shutter body reaches the floor or ground, causing the shutter to not be completely closed. The slats are held in place, creating a gap at the lower end of the shutter, which has the opposite effect of not fulfilling its role as fire and smoke prevention.

[Purpose of invention]

Therefore, the present invention has been developed to accommodate the difference in the distance between the surface of the slat of the shutter body and the lintel part depending on the site where the shutter is installed, by an extremely simple adjustment process. To provide a deflection prevention device for a shutter, which can surely hold a slat in a horizontal state along the slat, and can easily adjust the position of holding the slat up and down to close the shutter in an appropriate state. With the goal.

[Structure of the idea]

To achieve this objective, the present invention provides a shutter deflection prevention device that horizontally holds the slats of the closed shutter body in the event of a fire along the lintel. a first member fixed to a shutter mounting wall so as to be movable and adjustable in a vertical direction parallel to the surface of the slat; A second member is fixed to the member so as to be movable and adjustable in the front-rear direction perpendicular to the surface of the slat.

[Effect of invention]

According to the present invention, first, the shutter main body is brought into the correct closed state, and the entire latching fitting for latching the latching fitting fixedly installed on the surface of the slat of the shutter main body is connected to the first member of the latching fitting. temporarily fix it to the shutter mounting wall.

Then, the second member temporarily fixed to the first member of the latching member is moved in the front and back direction according to the distance from the slat of the shutter body, and the latching member lowers together with the slat in the event of a fire. Adjust the movement to a position where it can be securely engaged with the first member, and securely fix it to the first member at that position.

Next, move the first member temporarily fixed to the shutter mounting wall in a vertical direction parallel to the surface of the slats of the shutter body until the lower end of the shutter body completely contacts the ground or floor surface. In this state, the second member is moved and adjusted to a position where it can hold the slat, and is securely fixed to the shutter mounting wall at that position.

As a result, in the event of a fire, the shutter is completely closed, and at the same time, the slats of the shutter body are securely held along the lintel, preventing abnormal deflection of the shutter due to the heat of the fire, thereby increasing the fire prevention effect. It increases significantly.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described based on the drawings.

FIG. 1 is a side view showing a shutter deflection prevention device according to the present invention, and FIG. 2 is a perspective view showing the main parts thereof.

In the figure, S is a shutter body made up of a large number of slats 1, 1, . . . connected to each other by an interlock portion 2, and both ends of the shutter body are supported by guide rails 3 so that they can rise and fall. .

Reference numeral 4 denotes hooks fixed at predetermined intervals along the surface of the slat 1 located on the lintel 5 in the closed state, and 6 indicates a shutter mounting wall 7 along the lintel 5.
It is a latch that is fixed to the surface of the

The hook 4 is formed by bending a metal plate 8 of a predetermined length into a substantially L shape, and is fixed to the slat 1 with a bolt 9 and a nut 10 or a rivet, etc., with its tip facing downward. There is.

Reinforcing spacers 11 of a predetermined width are sandwiched between the vertical plate portion 8a of the metal plate 8 and the slat 1 at a predetermined interval, and the hook 4 is wound up on a winding shaft together with the slats 1, 1... This structure prevents plastic deformation from occurring due to compressive stress.

On the other hand, the hook 6 that is engaged with the hook 4 is
For example, the vertical plate portion 12a of the L-shaped steel 12 is fixed to the surface of the shutter mounting wall 7 with the anchor bolts 13 and nuts 14, and the L-shaped steel selected to have a predetermined length is mounted on the horizontal plate portion 12b of the L-shaped steel 12. 15 horizontal plate parts 15b are stacked and connected to each other with bolts 16 and nuts 17, and the tip of the vertical plate part 15a of the L-shaped steel 15 is connected to the gap between the vertical plate part 8a of the hook 4 and the slat 1. and are adapted to be inserted into each other and engaged with each other.

Here, the vertical plate portion 12a of the L-shaped steel 12 is provided with vertically elongated holes 18 at predetermined intervals along its longitudinal direction, into which the anchor bolts 13 are inserted. , horizontally elongated holes 19 are bored in the left and right directions, into which bolts 16 are inserted, at predetermined intervals corresponding to the positions of the hooks 4 fixed to the slat 1.

Further, horizontally long holes 20 are bored in the horizontal plate portion 15b of the L-shaped steel 15, communicating with the long holes 19 and extending in front and behind the bolts 16, respectively.

The above is an example of the structure of the shutter deflection prevention device according to the present invention, and the operation and effects thereof will be explained next.

When installing the device of the present invention, first, as shown in FIG. Overlapping the elongated holes 20,
Bolts 16 are inserted into each and temporarily fixed with nuts 17 to form a latching fitting 6.

Next, the latch 6 is horizontally arranged along the lintel 5, and the anchor bolts 13 are driven into the shutter mounting wall 7 through the long holes 18 drilled in the vertical plate 12a of the L-shaped steel 12. A nut 14 is screwed onto the anchor bolt 13 to temporarily fix the entire hook 6.

In this state, the shutter main body S is closed to completely close the shutter, and the slats located on the lintel part 5 are adjusted according to the spacing between the L-beams 15 of the latch 6 fixed to the shutter mounting wall 7. 1, the hooks 4 are fixed at predetermined intervals with bolts 9 and nuts 10, respectively, as shown in FIG.

First, each L-shaped steel 15 attached to the horizontal plate portion 12b of the L-shaped steel 12 is moved left and right by a predetermined distance along the long hole 19 bored in the horizontal plate portion 12b of the L-shaped steel 12. Adjust so that the vertical plate portion 15a is properly inserted in the middle between the spacers 11 in the hook 4.

Next, each L-shaped hole 15 is inserted into its horizontal plate portion 15b.
It is moved back and forth by a predetermined distance along the elongated hole 20 drilled in the hole 20, and adjusted to a position where the vertical plate portion 15a always reliably engages with the vertical plate portion 8a of the hook 4.

When the adjustment work of moving the position of each L-shaped steel 15 left and right and front and back with respect to the slat 1 is completed in this way, the bolts 16 and nuts 17 are tightened at that position.
to firmly fix each L-shaped steel 15 to the L-shaped steel 12.

Next, the L-shaped steel 12 is moved up and down along the long hole 18 through which the anchor bolt 13 is inserted, and each
Adjust the tip of the shaped steel 15 to a position where it can reliably support and hold the slat 1 to which the hook 4 is attached, tighten the nuts 14 of each anchor bolt 13, and attach the hook 6 to the shutter mounting wall 7. Fix firmly.

As a result, when the shutter main body S is lowered in the event of a fire, the seat plate attached to the lower end of the shutter body S will surely come into contact with the floor or the ground, and the shutter will be completely closed. Each hook 4 is properly engaged with each L-shaped steel 15 of the hook 6 fixed to the shutter mounting wall 7,
The slat 1 is securely held along the lintel 5.

Therefore, even if the winding shaft has a large inner width and the winding shaft is bent greatly by the heat of the fire,
The deflection that occurs in the central part of the shutter body S can be minimized, and the interlock section 2 that connects each slat 1, 1... can be prevented from coming off due to abnormal deflection and causing a fire to penetrate over a long period of time. It can be suppressed.

In the embodiment, a case has been described in which the position of the latch 6 can be adjusted by moving forward and backward, left and right, and up and down with respect to the slat 1. However, in order to achieve the object of the present invention, at least It is sufficient that the movement can be adjusted in the front-rear direction and the up-down direction.

[Effect of idea]

As described above, according to the present invention, even if the distance between the surface of the slat of the shutter body and the lintel varies slightly depending on the site where the shutter is installed, the fixing position of the latching bracket can be adjusted relative to the slat. By adjusting the movement in the front-back direction, the latching fitting can be reliably engaged with the slat's latching fitting, and by moving and adjusting the fixing position of the latching fitting in the vertical direction relative to the slat, the latching This has an excellent effect in that the state of engagement between the metal fitting and the hooking metal fitting can be set so that the slat can be reliably supported and held when the shutter is completely closed.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a shutter deflection prevention device according to the present invention, and FIG. 2 is a perspective view showing the main parts thereof. Explanation of symbols: S...Shutter body, 1...Slat, 2...Interlock part, 3...Guide rail, 4...Hatch fitting, 5...Lintel part, 6...
...Latching bracket, 7...Shutter mounting wall, 12...
L-shaped steel, 12a... Vertical plate part, 12b... Horizontal plate part, 13... Anchor bolt, 14... Nut,
15... L-shaped steel, 15a... Vertical plate part, 15b...
...Horizontal plate part, 16...Bolt, 17...Nut,
18, 19, 20...Long hole.

Claims (1)

[Scope of utility model registration request] In a shutter deflection prevention device that holds the slats of the closed shutter body horizontally along the lintel part in the event of a fire, the shutter is fixedly installed along the surface of the slat 1 located on the lintel part 5 in the closed state. A hook 6 for hooking the hook 4 is fixed to the shutter mounting wall 7 so as to be movable and adjustable in the vertical direction parallel to the surface of the slat 1; and a second member 15 fixed so as to be movable and adjustable in the front-rear direction perpendicular to the surface of the slat 1.