JP2002201876A - Shutter curtain retaining structure - Google Patents

Abstract

(57) [Summary] [Problem] To attach a hook piece 4 to a slat end 2f, which effectively functions to prevent the shutter curtain 1 from coming out of a guide rail 3 in a strong wind such as a typhoon. An inner wall of an outdoor side wall of a guide rail is provided.
In contrast to the ridge 18 provided on the 5a, the engagement concave groove 9 provided on the intermediate portion 6 of the hook piece 4 engaging with the ridge 18 has a single trapezoidal shape in which the side surface on the base 7 side is an expanded inclined surface 12. I do.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter curtain retaining structure for preventing a shutter curtain of an architectural shutter from deflecting due to a strong wind such as a typhoon and coming out of a guide rail, and is provided especially outside a sash. The present invention relates to a structure that functions more effectively for preventing a shutter curtain of a window shutter from coming off.

[0002]

BACKGROUND ART In addition to fire and crime prevention functions, architectural shutters also have an important function of wind resistance. However, shutters for windows and for openings in general stores have a slat thickness of 0.6 to 0.8 which constitutes a shutter curtain.
mm, and the slat cross section is too small in width due to winding, and there is a limit to increasing the section modulus.

[0003] When such a shutter is provided in a small opening, not much wind resistance is required, but the deflection against the wind pressure increases in proportion to the increase in the opening width. For window shutters installed outside the sash,
A phenomenon occurs in which the shutter curtain is pulled to the outside by the internal pressure (negative pressure) rather than the external pressure.

As means for securing such a windproof function, according to the prior art, for example, Japanese Patent Laid-Open No. 9-53376
The hook has a hook-shaped restricting claw at the end of the slat, and the restricting claw is engaged with an engaging strip on the inner wall of the guide rail.

[0005] In Japanese Utility Model Registration No. 2602406, a retaining piece corresponding to the hook-shaped restricting claw has a shape substantially the same as the cross section of the slat.

[0006]

However, the former Japanese Patent Application Laid-open No. Hei 9
Since the regulating claw described in JP-A-53376 has a portion that protrudes inward or outward from the slat thickness, it naturally affects the winding of the shutter curtain, and as a result, the regulating claw does not contact each other in the above-mentioned winding state. It is assumed that

On the other hand, the retaining piece described in Japanese Utility Model Registration No. 2602406 solves this problem. However, even when the bottom portion of the groove provided in the retaining piece is normal, the engaging ridge in the guide rail can slide. There is a risk of contact.

The present invention has a structure for preventing the shutter curtain from slipping out, but does not affect the winding and unwinding of the shutter curtain, and can reduce the sliding contact resistance for opening and closing the shutter in normal times, and furthermore, the shutter is exposed to strong winds. It is an object of the present invention to provide a shutter curtain escape prevention structure that can easily prevent escape from the stage even when the curtain is bent.

[0009]

According to the present invention, there is provided a shutter curtain escape prevention structure in which the left and right ends are inserted and guided in a pair of left and right guide rails erected at an opening of a skeleton to vertically open and close. A guide rail in which a ridge is formed in a vertical direction on at least one inner wall of the side wall of the guide groove; and At least one of the slat ends is provided to extend and is formed to have a thickness and width equivalent to the expected thickness and the found height of the slat, respectively, and an intermediate portion from the extended end to the base in the width direction. A hook-shaped piece having a trapezoidal engagement groove formed on the base side to be an expanding inclined surface, wherein the engagement groove is detachable from the projection. And it is characterized in and.

[0010] With this arrangement, the hook piece does not engage with the ridge, particularly the engaging groove, in normal times when no external pressure is applied. Also, the hook piece does not affect the winding of the slat. Further, the inclined surface constituting the side surface on the base side of the engaging groove functions until the hook piece engages with the engaging groove, and the inclined surface is engaged with the leading end of the slat while sliding in contact with the slat when the slat comes out. Since the hooks are engaged with the concave grooves, the engagement of the hook pieces with the engaging concave grooves can be reduced from being generated by impact.

In this case, it is more preferable that the ridge also serves as an airtight piece mounting groove having an opening slit facing the inner wall of the other side wall of the guide groove.

In this way, when the airtight piece to be mounted is, for example, mohair, it is possible to reduce the risk of scratches and abnormal noise caused by sliding on the guide rail when the shutter curtain moves up and down in normal times. No slats are scratched when the shutter curtain is wound up.

[0013] Further, in these products, a projecting side facing the rail bottom side is protruded from the rail bottom side of the protruding strip, and the projecting piece is formed on a side surface of the engaging concave groove on the extending end side. It is preferable that an insertion portion that can be engaged with and disengaged from the hook is provided in the width direction of the hook piece.

[0014] Thereby, the engagement of the engagement groove with the ridge becomes more firm. In other words, the projection piece has the function of preventing the engagement recess from being pulled out.

[0015] In these, it is preferable that the side surface on the base portion side of the ridge is a sliding contact inclined surface which allows the expanding inclined surface of the engaging groove to be slidable.

Thus, the engagement of the locking groove with the ridge becomes smoother.

[0017] In these devices, the shutter curtain may be a continuous binding between upper and lower slats by an interlocking method, or a lower slat and an upper slat may be connected to the upper and lower slats adjacent to each other. It is preferable to provide a detachable continuous binding that can be changed to a sealing position where the lower surface of the upper slat contacts the lower surface of the lower slat and the lower surface of the upper slat.

Therefore, the present invention can sufficiently exhibit the functions of these shutter curtains.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view in which the architectural shutter is accommodated, and a shutter curtain 1 having an upper end fixed to a winding shaft (not shown) extending upward is inserted into and supported by guide rails 3 at both ends. In this state, the winding shaft is moved up and down by forward and reverse rotation to open and close the opening of the building.

FIG. 2 is an assembly diagram of the slat 2 and the hook piece 4 for preventing the shutter curtain 1 fixed to the slat end 2f of the slat 2 from coming off. The slat 2 is of an interlock type (including an overlap type) in which upper and lower interlock portions 2c and 2d are continuously connected between the upper and lower slats 2 and 2a. The indoor slat surface 2f indicates a slat end. The hook piece 4 is composed of an extended end portion 5, an intermediate portion 6, and a base portion 7 formed in a block shape.
A fixed portion 8 for fixing the hook piece 4 to the slat end 2 f of the slat 2 is integrally formed with the base 7. The fixing portion 8 is fixed with a rivet or the like by aligning the through hole 13a of the fixing portion 8 with the mounting hole 13b of the fixing portion 8 of the slat end 2f. Further, the fixing portion 8 is not provided with the through-hole 13a.
May be inserted from the slat end 2f into the slat interior 2e and integrally fixed by an automatic caulking machine (not shown). In this case, the engaging groove 9 of the intermediate portion 6 of the hook piece 4 is made to be in the same direction as the outdoor slat surface 2 a of the slat 2. The side surface 4f of the base 7 on the side of the fixed portion 8 functions to prevent lateral displacement of the upper and lower slats 2, 2... The base 7, the intermediate portion 6, and the extension end 5 extend in this order from the slat end 2f toward the bottom 18b of the guide rail 3 (FIG. 7A). The material of the hook pieces 4 is plastics made of glass fiber-containing nylon, but is not limited thereto, and may be another hard resin.

FIG. 3 shows that the cross section of the slat 2 is so-called hollow, and that the upper and lower slats 2, 2 adjacent to each other are connected to the lower slat 2 and the upper slat 2, the upper surface 2c of the lower slat 2 and the upper slat 2 are connected to each other. 2 and the lower surface 2d of the lower slat 2 and the lower surface 2d of the upper slat 2 are separated from each other so as to be capable of changing to a sealing position in which the lower surface 2d is in contact with the lower surface 2d. It is of the form. The engagement between the slats 2 and the hook pieces 4 is the same as in the above-described interlock system.

Next, the hook piece 4 will be described with reference to FIG. It should be noted that FIG.
Ends 2f of slats 2.
The hook piece 4 fixed to the slat 2 will be described, and the hook piece 4 of the interlock slat 2 will be supplemented as necessary. The cross section of the hook piece 4 is the cross section 2e of the slat 2.
And have substantially the same shape. This is to prevent the hook pieces 4 from affecting the winding of the shutter curtain 1. As shown in FIG. 3, the indoor side surface 2b of the slat 2 is substantially smooth, but the outdoor side surface 2a is formed by roll-forming a curved concave surface in which the center 2g of the vertical width (hereinafter simply referred to as the width) is the most depressed. It is. Therefore, in order to conform to the cross-sectional shape of the slat 2, the hook piece 4 also has a substantially smooth indoor side surface 2b and a curved outdoor side surface 2a in a side view (FIG. 4B). In addition, since the hook piece 4 of the interlock type slat 2 is attached to the surface of the indoor side 2b having a smooth width excluding the slat interlock portions 2c and 2d, the outdoor side surface 4a and the indoor side surface 4b are both smooth. The thickness shall be within the thickness T of the slat 2.

The extending end 5 is formed on the rail bottom 1 of the guide groove 20 of one of the left and right guide rails 3 of the shutter curtain 1.
In the case of so-called offset in the seven directions, the leading end surface 4c slides against the bottom inner wall 17a of the rail bottom portion 17, thereby serving to control the so-called offset. Even in such a case, in order to reduce the sliding resistance of the shutter curtain 1 with respect to the bottom inner wall 17a, the peripheral edge of the front end face 4c is formed in a bulging curved shape or chamfered.

The intermediate portion 6 has an engagement surface 10 which is a side surface on the extension end side so as to face the outdoor side in the vertical width H direction of the hook piece 4.
A trapezoidal groove 9 composed of a bottom surface 11 and an expanding inclined surface 12 is formed. Here, the engagement surface 10 is substantially perpendicular to the bottom surface 11. On the other hand, the expansion inclined surface 12 has an inclination angle α that expands the engagement groove 9 from the bottom surface 11 toward the outdoor side.

The intermediate portion 6 is formed such that the engagement surface 10 is
The engagement of the convex 18 with the convex tip 18a serves to prevent the shutter curtain 1 from coming off. Further, the expanding inclined surface 12 plays a role of smoothly shifting the engagement. That is, when the shutter curtain 1 is bent, the engagement surface 10 is immediately brought into contact with the convex tip 18 a of the guide rail 3.
It has a function of alleviating the contact with a shock. The width of the bottom surface 11 is such that the projections 18 can be securely inserted into the engagement grooves 9.

The base 7 also serves as a base for the fixing portion 8.

The fixing portion 8 is a portion to be fixed to the end 2 f of the slat 3. In order to fix the fixing portion 8 to the tip 2f of the slat 2, automatic crimping may be used, or holes 13a may be formed beforehand.

Here, the hook pieces 4 are provided at least every other slat 2. The upper and lower widths H of the hook pieces 4 may be the slats 2 on which the hook pieces 4 are provided, even if the slats 2 are of the interlock type or the slats 2 can be separated from each other.
The slats 2 just above or just below the slats 2 are dimensioned so as not to cause lateral displacement. The width L of the hook piece 4 is equal to the distance between the tip end face 4c and the rail when the shutter curtain 1 is set in the guide rail in normal times (meaning that no surface pressure such as wind pressure is applied to the shutter curtain 1). A clearance of about 10 to 15 mm can be taken between the base 17 and the bottom 17.

Next, the guide rail 3 is shown in FIG.
It will be described based on. The guide rail 3 has a substantially U-shape in the vertical direction, and has an outdoor-side finding surface 14 and an indoor-side finding surface 1.
4 ', the outdoor side surface 15, the indoor side surface 16, and the rail bottom portion 17 constitute an outer periphery. A guide slit 19 through which the shutter curtain 1 can move up and down is provided between the outdoor-side finding surface 14 and the indoor-side finding surface 14 '.
A convex shape 18 is provided on the outdoor side inner wall 15 a of the outdoor side surface 15 of the guide rail 3 so as to extend in the vertical direction of the guide rail 3. Even if the shutter curtain 1 comes out to the maximum, the position of the convex inner wall 15a on the outdoor side inner side 15
f is set so as not to go outside from the outdoor-side finding surface 14 or the indoor-side finding surface 14 '. In addition, the projecting dimension of the projection 18 is larger than at least the depth of the engagement surface 10 of the hook piece 4. In addition, the found width of the outdoor side found surface 14 of the guide rail 3 is made smaller than the projected dimension of the convex shape 18. This is to guide the shutter curtain 1 assuming that the protruding tip portion 18a of the protruding portion 18 can be in sliding contact with the vicinity of the end of the slat 2.

Reference numeral 23 denotes a pocket for mounting an obstacle detecting tape switch when the shutter has a seat plate detecting device. The inside of the guide rail partitioned by the convex 18, the pocket 23, the outdoor-side finding surface 14, and the indoor-side finding surface 14 ′ is the front room 20, the convex 18, the pocket 23, and the rail bottom 1.
The inside of the guide rail partitioned by 7 is called a bottom chamber 21.

Now, the operation of the present invention having such a configuration will be described. FIG. 7 (A) is a view showing a state where the hook pieces 4 of the shutter curtain 1 and the guide rails 3 are settled in a normal state. In this state, the slat end 2f and the hook piece 4 are in the bottom chamber 21, and the hook piece 4 does not engage with the convex shape 18.

When the shutter curtain 1 receives the wind pressure from the outdoor side, it once bends in the indoor direction. In this state, if there is a sash shoji (not shown) on the indoor side, a pressing force (repulsive force) acts between the shutter curtain 1 and the sash shoji.
An attempt is made to pull out the shutter curtain 1 in the outdoor direction.
FIG. 7B shows this state, in which the slat end 2 f moves from the convex shape 18 into the front chamber 20, and the expanding inclined surface 12 of the hook piece 4 comes into sliding contact with the convex shape 18.

As the wind pressure increases, the above state occurs in a very short time, the expanding inclined surface 12 of the hook piece 4 slides on the convex end 18a, and the engaging surface 10 moves to the convex end. 18a to prevent the shutter curtain 1 from swelling further to the outdoor side (FIG. 7C).

As described above, the engagement surface 10 has the convex end 18.
Before the contact with a, the expanding inclined surface 12 of the intermediate portion 9 slides and moves on the convex end portion 18a, so that it is possible to reduce the direct application of wind pressure in the orthogonal direction to the hook piece 4. . That is, the pulling force of the hook piece 4 from the slat end 2 f in the longitudinal direction of the slat 2 is generated exclusively on the engagement surface 10. Therefore, the expansion inclined surface 12 relieves the other external force from acting on the hook piece 4. This becomes more apparent when compared with the prior art not shown. The groove corresponding to the engaging concave groove 9 of the hook piece 4 of the prior art is U-shaped itself having both side walls vertical to the bottom. Therefore, such an engagement groove 9
At the beginning, the base 7 of the hook piece 4 receives a local shearing force due to the step of the side wall.
For this reason, since the fixed portion of the fixing portion 8 receives a force in an unexpected direction, the risk of the hook piece 4 being detached or deformed increases.

When the wind pressure is attenuated, the operation of the shutter curtain 1 is reversed, and the expanded shutter curtain 1 smoothly returns to the normal state. This is not always the case with the engagement groove of the prior art. In addition, since a series of the exit and return operations of the shutter curtain 1 are continuously repeated during a typhoon, the risk is further increased in the related art.

In short, the expanding inclined surface 12 of the present invention functions to eliminate such a problem. The guiding function for smoothly engaging and disengaging the hook piece 4 with the convex 18 and the hook piece 4 are provided. And a function for giving a stress necessary only to prevent the shutter curtain 1 from slipping out.

It is also possible to make the inclination angle α of the inclined surface 12 small and make the width of the engaging groove 9 of the intermediate portion 6 zero. In such a case, it is effective when the thickness of the projection 18 is small.

Next, a second embodiment of the present invention will be described. As shown in FIGS. 7A and 8A, the shape of the ridge 18 is changed to the inner wall 1 of the other side wall 16 of the guide groove 19.
This is an airtight piece mounting groove 18c having an opening slit 18b facing the surface 6a. In this case, if a similar ridge 22 is provided on the inner wall 16a of the other indoor side wall 16 in opposition to the ridge 18, the bottom chamber 21 can further enhance the sound insulation. Therefore, since the hook piece 4 is engaged with the ridge 18 in the bottom chamber 21, the contact noise between the hook piece 4 and the ridge 18 can be further reduced.

Further, as described above, the guide rail 3 is
8 separates the front chamber 20 and the bottom chamber 21 so that even when a finger is inadvertently inserted into the guide rail 3, the ridge 18 serves to prevent so-called finger stuffing.

Next, a third embodiment of the present invention will be described. As with the second embodiment, the guide rail 3 has a shape in which the ridge 18 also serves as the airtight piece mounting groove 18c, and the rail bottom 17 faces the side of the rail bottom 17 side of the airtight piece mounting groove 18c. The protruding ridge side 18a is projected. In addition, the hook piece 4 is provided with an engaging concave groove 9a on the engaging surface 10 of the engaging concave groove 9 so that the convex strip 18a can be disengaged over the vertical width of the hook piece 4. I do. By doing so, the hook pieces 4 can be more reliably engaged with and disengaged from the ridges 18.

Next, a third embodiment of the present invention will be described. As shown in FIG. 8 (B), with respect to the guide rail 3, similarly to the third embodiment, the ridge 18 is provided with an airtight piece mounting groove 18.
c, and a protruding ridge 18a with the rail bottom 17 facing the side of the rail bottom 17 forming the airtight piece mounting groove 18c is projected. One airtight piece mounting groove 1
8c is a chamfered sliding contact slope 18 so that the side face 18d on the side of the finding surface 17 can slide on the expanding slope 12.
e. As a result, the expanding inclined surface 12 is smoothly brought into sliding contact with the sliding contact inclined surface 18e, so that the hook piece 4 can advance into the engaging groove 9.

As shown in FIG. 6 (C), a part of the widened inclined surface 12 of the engagement concave groove 9 is set to the vertical
May be formed.

[Brief description of the drawings]

FIG. 1 is a front view of a shutter.

FIG. 2 is a perspective view in which an interlock slat and a hook piece are engaged.

FIG. 3 is a perspective view in which a slat and a hook piece that can be freely attached and detached are changed.

4A is a front view of a hook piece, and FIG. 4B is a side view.

FIG. 5 is a perspective view in which a slat that can be freely attached and detached and a hook piece showing another example are assembled.

FIG. 6A is a plan view of a hook piece according to the first embodiment,
(B) is a plan view of a hook piece of another example, and (C) is a plan view of a hook piece of another example.

FIG. 7A is a plan view showing the hook pieces being accommodated in the guide rail in a normal state, FIG. 7B is a plan view just before the hook pieces are engaged in a convex shape, and FIG. FIG.

8A is an enlarged view of an airtight mounting groove, and FIG. 8B is an enlarged view of another example of an airtight mounting groove.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter curtain 2 Slat 3 Guide rail 4 Hook piece 6 Intermediate part 7 Base part 8 Fixing part 9 Engaging concave groove 10 Engaging surface 11 Bottom part 12 Expanding inclined surface 15 Outdoor side surface 16 Indoor side surface 17 Rail bottom 18 Convex 18a Convex end 19 Guide groove 20 Front chamber 21 Bottom chamber

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Satoshi Shimoto 2-1-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Sanwa Shutter Industry Co., Ltd.

Claims (5)

[Claims] The left and right ends are inserted and guided in guide grooves of a pair of left and right guide rails provided upright at an opening of a skeleton, and open and close in the vertical direction. In the shutter curtain which becomes
A guide rail having a ridge formed in the vertical direction of at least one inner wall of the side wall of the guide groove, and provided to extend to at least one slat end of the slat; And molded into the same thickness and width, respectively, and at the intermediate portion from the extended end to the base, the base side in the width direction is formed with a single trapezoidal engagement concave groove that becomes an expanding inclined surface, A hook curtain, wherein the engagement concave groove is detachable from the ridge. 2. The shutter curtain retainer according to claim 1, wherein the ridge also serves as an airtight piece mounting groove having an opening slit portion facing the inner wall of the other side wall of the guide groove. Construction. 3. A protruding side for projecting toward the rail bottom side is protruded from the rail bottom side of the projection, and the protruding piece is disengageable from the protruding piece on a side surface of the engaging concave groove on the extended end side. The retaining structure for a shutter curtain according to claim 1 or 2, wherein an insertion portion is provided in a width direction of the hook piece. 4. The shutter according to claim 1, wherein a sliding contact inclined surface is provided on the base side of the protruding ridge so that an expanding inclined surface of the engaging groove can slide. Curtain retaining structure. 5. The shutter curtain according to claim 1, wherein the upper and lower slats are connected to each other by an interlocking method, or the upper and lower slats are adjacent to each other. 5. The continuous binding that is detachable so as to be capable of being transformed into a sealing posture in which it comes into contact and a separating posture in which an upper surface of the lower slat and a lower surface of the upper slat are separated from each other. Shutter curtain retaining structure.