JP3133276B2 - shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slat guide rail provided on the left and right sides of an opening of a building, a shutter case provided above the opening, and a shutter case provided in the shutter case.
The present invention relates to a shutter provided with a shaft and a plurality of drums attached to the shaft at intervals.

[0002]

2. Description of the Related Art FIG. 7A is a view of an example of a conventional shutter viewed from the outdoor side. Guide rails 22 for guiding slats 21 are attached to the left and right of an opening of a building, and a shutter is provided above the opening. The case 23 is attached. A shaft 24 is fixedly mounted in the shutter case 23, and a plurality (usually two or three) of drums 25 are rotatably mounted on the shaft 24 at intervals, and the upper end of the slat 21 is mounted on the drum 25. Is attached. The drums 25 are connected by a plurality of connecting members 28. Reference numeral 29 denotes a coil spring.
Is wound around a shaft 24, one end of which is fixed to the shaft 24, and the other end of which is fixed to the drum 25 to apply a force in the pulling direction to the slat 21, thereby reducing the opening force of the shutter. .

FIG. 8 is an exploded perspective view showing a conventional mounting structure of the hanging member 27 to the drum 25 and a conventional drum cover 30. The conventional hanging member 27 is formed of a substantially arc-shaped plate material, and is provided at one end or at both ends as shown in the figure with curved connection portions 27a, 2b for connecting the slats 21.
7b, with the slat 21 turned one turn,
The slats 21 on the inner peripheral side and the slats 21 on the outer peripheral side are alleviated to smooth the slat hoisting and lowering operations.

The suspension member 27 is provided with a plurality of fixture insertion holes 27c to 27e near the center and a part of the suspension member 27 in the axial direction of the shaft 24 in order to adjust the mounting position in the circumferential direction with respect to the drum 25. They are provided at different positions. Then, the cylindrical portion 25a of the drum 25 is sandwiched between cut-and-raised pieces 27i provided on the hanging member 27, and the bolt 31 is connected to the hanging member 2
7, one of the fixture insertion holes 27c to 27e and the drum 25
The suspension member 27 is fixed to the drum 25 by passing through a suspension member fixing hole 25b provided in the cylindrical portion 25a, and screwing and tightening the nut 32.

As described above, the mounting position of the hanging member 27 can be adjusted in the circumferential direction of the drum 25 because the shaft 24 is mounted obliquely or the hanging position of the drum 25 at the mounting site of the shutter. Hole for fixing members 2
Even if the position of 5b is different between the drums 25, the slat 21 can be mounted horizontally by adjusting the position of the hanging member 27.

[0006] The drum cover 30 is made of a band-shaped synthetic resin molding material.
5 is attached to a surface other than the attachment surface of the suspension member 27 in the cylindrical portion 25a, and the slat 21 is made of a metal drum 25.
It is intended to prevent damage caused by direct contact.
The drum cover 30 holds the drum 2 between the projecting pieces 30a on both sides.
5 by sandwiching the cylindrical portion 25 a of the drum 25, and locking the locking portion 30 b provided on the drum cover 30 with a locked portion 25 c (a cut or a hole as shown) provided on the cylindrical portion 25 a of the drum 25. It is attached to the drum 25.

[0007]

In the conventional mounting structure of the hanging member 27 to the drum 25 shown in FIG. 8, the mounting position adjustment pitch of the hanging member 27, the diameter of the fixing tool insertion holes 27c to 27e, That is, due to the relationship with the diameter of the bolt 31, it is necessary to partially provide the fixture insertion holes 27c to 27e so that the positions of the shafts 24 in the axial direction are different. Assuming that these fixture insertion holes 27f to 27h are provided side by side in the circumferential direction of the drum 25 as shown in FIG. 7B, the hanging member 27 is formed to be thinner than the drum 25. In the state where the suspension member 27 is fixed by inserting the bolt 31 into one of the fixture insertion holes 27f to 27h, if tension is applied to the suspension member 27 via the slat 21, the fixture insertion hole 27f ~ 27h will be crushed.

In order to solve such a problem, a cylindrical projection protruding outward is formed on the cylindrical portion 25a of the drum 25, and the cylindrical projection is fitted into one of the fixing tool insertion holes 27f to 27h and screwed. It is conceivable to increase the bonding strength by fixing with the 31. However, when the drum 25 is made of a casting, it is difficult to form a cylindrical projection formed outward in the cylindrical portion 25a.

If the thickness of the hanging member 27 is increased to provide the continuous fixture insertion holes 27f to 27h shown in FIG. 7B, the weight and the price of the hanging member 27 increase, and Equipment.

[0010]

In the conventional drum cover 30 shown in FIG . 8 , due to a difference in the amount of expansion and contraction between the drum 25 and the drum cover 30 due to a manufacturing error or a temperature difference, etc.
There is a problem that it is difficult to lock and fix the locking portion 30b of the drum 25 to the locked portion 25c of the cylindrical portion 25a of the drum 25.

[0012]

It is an object of the present invention to provide a shutter having a structure in which a drum cover can be easily mounted.

[0014]

[0015]

In order to achieve the above object , the present invention provides a slat guide rail on the left and right of an opening of a building, a shutter case above the opening, and a shutter case inside the shutter case. A shaft and a plurality of drums attached to the shaft at intervals, and a plurality of locked portions provided on the cylindrical portion of each of the drums, a belt cover made of a synthetic resin band is provided. By locking the corresponding locking portion, a drum cover is attached to the outer periphery of the cylindrical portion, and a bent portion or notch is provided between the locking portions of the drum cover so that the drum cover has elasticity. It is characterized by having.

[0016]

[0017]

According to the present invention, is provided with the elastic portion between the engaging portion of the drum cover, when attaching the drum cover to the cylindrical portion of the drum, by stretching the stretchable portion, the engageable of the cylindrical portion of the drum The spacing between the locking portions can be easily adjusted to the spacing between the stopping portions, and the mounting of the drum cover becomes easy.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is an exploded perspective view showing a structure for attaching the hanging member 1 to the drum 2 and a structure for the drum cover 3. The overall configuration of the shutter of the present invention is basically the same as that shown in FIG. That is, the guide rail 2 provided in the opening of the building and guiding the slat 21
2. It has a shutter case 23 to which a shaft 24 is attached, a middle pillar is provided between the left and right guide rails 22, and the slat 21 may be vertically movable between the middle pillar and the guide rail. .

The drum 2 is rotatably mounted on a shaft 24 mounted in a shutter case 23 shown in FIG. Although the shaft 24 is fixed to the shutter case 23 in the example of FIG. 7, the drum 2 is fixed to the shaft 24, and the shaft 24 is rotated manually or electrically to raise and lower the slats 21, that is, to open and close the shutter. In some cases, this is done.

Each of the drums 2 has the shaft 2
4 and has a cylindrical mounting portion 2a rotatably fitted to it and a cylindrical portion 2b on the outer periphery. 2c is a hole for fixing a connecting member 28 (see FIG. 7) such as a rod for connecting to another drum 2.

The drum 2 has a hanging member fixing hole 2d.
To 2f are continuously arranged in the circumferential direction. In the present embodiment, an example in which a plurality of sets (four sets in the illustrated example) are provided with the hanging member fixing holes 2d to 2f is shown. The reason is that the circumferential position of the hanging member 1 with respect to the drum 2 can be changed, thereby making it possible to adjust the spring force of the coil spring 29 shown in FIG. By providing a plurality of sets of the hanging member fixing holes 2d to 2f in this manner, as shown in FIG. 2B, the slat connection portions 1a and 1b provided at both ends in the circumferential direction of the hanging member 1 are provided. Of these, the inner winding (the mounting structure in which the concave surface 21 a of the slat 21 faces the outer peripheral surface of the drum 2) in which the upper end of the slat 21 is connected to the connecting portion 1 a bent inside the hanging member 1. And the outer winding (the mounting structure in which the convex surface 21b of the slat 21 faces the outer peripheral surface of the drum 2).
Can change the mounting position.

The suspension member 1 has a concave portion 1c except for a peripheral portion.
To form As shown in FIG. 2B, the shape of the concave portion 1c has a curvature that matches the outer peripheral surface of the drum 2. A fixture insertion hole 1d is provided substantially at the center of the concave portion 1c of the hanging member 1, that is, at a substantially central portion of the hanging member 1, and a drum 2 is provided at a portion of the concave portion 1c which is circumferentially separated from the fixture insertion hole 1d. Protrusion 1 for preventing rotation of the hanging member 1 across the cylindrical portion 2b
f is provided by cutting and raising as shown in FIG.

As shown in FIGS. 2 (B) and 3 (A), in this embodiment, a fixing tool 4 such as a bolt or a screw is used to fix the fixing tool insertion hole 1d of the hanging member 1 and the hanging of the drum 2. The hanging member 1 is fixed to the drum 2 by inserting the fixing member 4 into one of the holes for fixing the original member (in this example, the fixing member insertion hole) 2 d to 2 f and screwing the fixing member 4 into the nut 5. I have. Further, as shown in FIG. 3B, the cylindrical portion 2b of the drum 2 is sandwiched between the protrusions 1f provided in the concave portion 1c of the hanging member 1 to prevent the hanging member 1 from rotating.

With such a mounting structure of the hanging member 1, the width W (see FIG. 1) of the hanging member 1 can be reduced, and the left and right slats of the hanging member 1 in the width W direction can be applied. The load can be equalized. Further, as shown in FIG. 3A, it is possible to adopt a configuration in which a cylindrical projection 1e is formed in the concave portion 1c of the hanging member 1 and the inside thereof is formed as a fixture insertion hole 1d. Is fitted in one of the hanging member fixing holes 2d to 2f of the drum 2, the mounting strength of the hanging member 1 can be improved. Also,
Since the drum 2 is originally formed thicker than the hanging member 1 due to its structure, even if the hanging member fixing holes 2d to 2f are provided so as to be continuous in the circumferential direction, the load of the slat 21 causes The hanging member fixing holes 2d to 2f do not collapse.

In the present invention, depending on the diameter of the fixture 4 and the adjustment pitch of the mounting position of the hanging member 1, FIG.
As shown in (C), the hanging member fixing holes 2d to 2f may not be continuous but may be arranged independently and close to each other. Also, the suspension member fixing holes 2d to 2f themselves are used as screw holes, and the fixing device 4 is screwed, a structure other than screws and bolts is used for fixing using a fixing device such as a clip, or other fixing members are used. A structure in which the hanging member is fixed by adding a metal fitting can also be adopted.

FIGS. 4A, 4B and 4C are a plan view, a side view and a bottom view, respectively, showing an example of the drum cover 3 according to the present invention. The drum cover 3 is made of a flexible synthetic resin strip. As shown in the plan view of FIG. 1, FIG. 5 (A), and the cross-sectional view of FIG. 5 (B), a notch or a hanging member fixing hole provided in the cylindrical portion 2b of the drum 2 is formed on the abdominal surface of the drum cover 3. It has a projection-shaped locking portion 3a that is locked by being fitted into one of the locked portions consisting of 2d to 2f. That is, in this embodiment, the hanging member fixing holes 2d to 2f are also used as locked portions for locking the locking portions 3a. The drum cover 3 has a plurality of projecting pieces 3b on both sides. In addition, the locking portion 3a
By providing a curved portion 3c narrower than the other portions, elasticity is provided.

In this embodiment, as shown in FIG. 5B, the cylindrical portion 2b of the drum 2 is sandwiched between the projecting pieces 3b on both sides of the drum cover 3, and the engaging portion 3a is engaged with the cylindrical portion 2b. The drum cover 3 is attached to the drum 2 by engaging the stoppers 2d to 2f. In this case, as shown in FIG. 2 (B), the hanging member 1 can be
A hanging member fixing hole (locked portion) for locking the locking portion 3a of the drum cover 3 according to whether the fixing is performed using 2f.
Select 2d to 2f. Further, even when the distance between the locked parts 2d to 2f of each set of the drum 2 and the distance between the locking parts 3a of the drum cover 3 are not equal, the locking part is formed by expanding and contracting the curved part 3c. 3a is locked portion 2d-2
f and can be easily locked.

FIG. 6A is a plan view showing another example of the drum cover according to the present invention.
By providing a cut 3d from the side between a, elasticity is provided. This cut is shown in FIG.
As shown in (B), it is not linearly formed,
It may be provided as a notch 3e having a width. The cuts 3d and 3e can also give the drum cover 3 elasticity.

When the present invention is carried out, the hanging member 1, the drum 2, the drum cover 3, the slat 21, the guide rail 2
2. The specific shapes and structures of the shutter case 23, the shaft 24, and the like are not limited to the above-described embodiment, and various changes and additions are possible.

[0030]

[0031]

According to the present invention, is provided with the elastic portion between the engaging portion of the drum cover, it is easy to mount to the drum cover.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a structure of attaching a hanging member to a drum and a structure of a drum cover in the present invention.

FIG. 2A is a plan view of a drum according to the present embodiment, and FIG. 2B is a cross-sectional view illustrating a mounting structure of a drum cover to the drum according to the present embodiment.

FIG. 3A is a cross-sectional view showing a fixing portion of a drum cover to a drum by a fixing tool according to the present embodiment, and FIG. 3B is a cross-sectional view showing a structure for holding a cylindrical portion of the drum by a projecting piece in the present embodiment; (C) is another example of the arrangement of the fixture insertion holes provided in the drum.

FIGS. 4A, 4B, and 4C are a plan view, a side view, and a bottom view, respectively, of the drum cover in the present embodiment.

FIG. 5A is a plan view showing a locking portion of a drum cover in the present embodiment, and FIG. 5B is a cross-sectional view showing a locking structure of the locking portion of the drum cover in the embodiment with respect to the drum.

FIGS. 6A and 6B are plan views showing other examples of the drum cover according to the present invention.

FIG. 7A is a view of a conventional shutter viewed from the outdoor side, and FIG. 7B is a plan view showing an example of a fixture insertion hole provided in a drum cover.

FIG. 8 is an exploded perspective view showing an example of a conventional structure for attaching a hanging member to a drum and a structure of a drum cover.

[Explanation of symbols]

1: hanging member, 1d: fixing tool insertion hole, 1e: cylindrical projection,
1f: protrusion, 2: drum, 2d to 2f: hanging member fixing hole (locked portion), 3: drum cover, 3a: locking portion, 3
b: projecting piece, 3c: curved part, 3d, 3e: cut, 4:
Fixing tool, 5: Nut, 21: Slat, 22: Guide rail, 23: Shutter case, 24: Shaft

Claims (1)

(57) [Claims] 1. A slat guide rail is provided on left and right sides of an opening of a building, a shutter case is provided above the opening, and a plurality of shafts are mounted in the shutter case with a space between the shafts. A plurality of locked portions provided on the cylindrical portion of each of the drums, and a plurality of locked portions provided on the cylindrical portion of each of the drums. A drum cover is attached to the outer periphery of the shutter, and a curved portion or notch is provided between the locking portions of the drum cover so that the drum cover has elasticity.