JP3596814B1 - shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engagement member provided between a slat and a guide rail to further enhance an engagement force when a slat constituting a shutter is swelled forward by wind or the like and is to be pulled out from a guide rail. To prevent disengagement.
SOLUTION: In a shutter having a slat that is connected to be able to bend up and down and a guide rail having a U-shaped cross section into which both ends of the slat protrude, an inner surface on an inner front end side of the guide rail has: A space protruding band having a space between the outer protrusion and the inner protrusion is formed, and an outer cut surface and an inner cut surface are formed on a front surface of a slat existing outside the space protruding band. When the slats are pulled to the center side in an inclined state where the center side protrudes forward, the tip of the outer cut surface of the recessed section is trapezoidal. At the same time as engaging the tip of the inner ridge of the space ridge, a gap is secured between the bottom surface of the recess and the inner ridge of the space ridge, and the movement is restricted. A shutter characterized by being performed.
[Selection diagram] Fig. 1

Description

  The present invention relates to a shutter that does not escape from a guide rail even by strong wind or the like.

  In some cases, shutters having slats arranged vertically for security are provided outside glass doors and shojis in openings of houses and the like. The slats are inserted into the guide rails at both ends and are prevented from moving back and forth.However, when a strong wind blows, each slat swells forward due to the negative pressure, and as a result, is pulled toward the center. It may fall out of the guide rail. In this case, the slat hits a glass door or the like and breaks it, or the slat itself breaks and flies away. For this reason, some kind of pull-out preventing means is provided.However, the conventional preventing means attaches engaging members that engage with each other to the slats and the guide rails and engages them. In such a case, there is a problem that a trouble is caused, a mating member is damaged, or a diameter when the member is wound around a drum is increased.

Therefore, in Patent Document 1, a locking recess having a trapezoidal cross section is formed at the front end of the slat at the front and rear cut surfaces in the front and rear directions and a bottom surface connecting the cut surfaces. The outer cut surface of the concave portion is locked to the outer side wall of a ridge (in which the airtight piece mounting groove is substituted) protruding from the inner surface of the inner front end of the guide rail to prevent pulling out. Has been proposed.
JP 2001-164852 A

  FIG. 4 is a cross-sectional view showing the relationship between a slat and a guide rail in a conventional example. In order for the locking recess 10 to be able to be locked on the ridge 12 formed on the guide rail 11, the width of the locking recess 10 is required. L (length in the left-right direction) must be wider than the width l of the ridge 12. For this reason, when both are locked, the slats 13 are inflated forward and the center side is inclined so as to protrude forward. Will be. At this time, when the slat 13 is further expanded forward, a leverage action is generated with the contact point serving as a fulcrum, and overcomes the frictional force between the outer cut surface of the locking recess 10 and the outer side wall of the ridge 12. The latch is easily released, and the slat 13 comes off. In the present invention, the fulcrum is not formed, and the locking is not easily released by converting the pulling force toward the center to a force for strengthening the locking.

The present invention provides, as described in claim 1, a shutter having a slat connected to be able to bend up and down, and a guide rail having a U-shaped cross section into which both ends of the slat enter. A space projecting band having a space between the outer protrusion and the inner protrusion is formed on the inner surface of the inner end on the front side. The cross section connecting the cut surface and the inner cut surface at the bottom surface forms a trapezoidal concave portion, and when the slat is pulled toward the center in an inclined state in which the central side protrudes forward, the concave portion is formed. with-edge of the outer cutting surface to engage the tip of the inner protrusions of the chromatic space突帯of this time, a gap is secured between the inner ridge of the bottom and closed space突帯the recess And the movement is regulated. To provide Yatta.

According to a second aspect of the present invention, there is provided a shutter having a slat that is connected to be able to bend up and down and a guide rail having a U-shaped cross section into which both ends of the slat protrude. On the inner surface of the inner end on the front side of the rail, a space ridge having a space between the outer ridge and the inner ridge is formed, and on the front surface of the slat existing outside the space ridge, The cut-and-raised surface forms a cut-and-raised portion that faces inward, and when the slat is pulled toward the center while the central side protrudes forward, the tip of the cut-and-raised surface of the cut-raised portion is formed. Engages with the tip of the inner ridge of the space ridge, and at this time, a gap is secured between the surface of the slat and the inner ridge of the space ridge, and its movement is restricted. Providing a shutter that is characterized by It is intended.

  Furthermore, as a specific configuration of the slat movement control described above, the present invention has a configuration in which the width of the concave portion is smaller than the width of the spatial protruding band described in claim 2, and the outside of the spatial protruding band of claim 3. In addition to providing a configuration in which the outer side surface of the ridge is inclined forward, as a specific configuration for securing a gap between the slat and the inner ridge of the space ridge, According to a sixth aspect of the present invention, there is provided a configuration in which a slat contacts an end of an outer ridge, and a configuration in which a cut-and-raised portion contacts an end of an outer ridge.

  In the present invention, the engagement between the slat and the guide rail when the slat is pulled to the center side is such that the corner of the tip of the outer cut surface of the recess formed in the slat is formed by the inward ridge of the space ridge. At this time, since a gap is secured between the inward ridge and the bottom surface of the concave portion, the gap between the bottom surface of the concave portion and the inward convex line is provided. There are no contact points, ie, fulcrums. Therefore, even if the slat is further expanded forward and pulled toward the center, the corner of the tip of the outer cut surface of the recessed portion is pressed and engaged in a direction to further bite into the inner ridge, and is further disengaged. It becomes difficult.

  8 is a front view of the shutter, FIG. 5 is a perspective view of a slat constituting the shutter, FIG. 6 is a side view, and FIG. 7 is a sectional view taken along the line AA of FIG. Slats 2 made of a strip-shaped thin metal plate or a resin plate are vertically connected. In this connection, curled portions 2a and 2b are formed at the upper and lower ends of each slat 2, and these are fitted and connected. Therefore, each slat 2 is connected to bendable. In this case, the lateral cross-sectional shape of the slat 2 is such that the center is expanded forward to improve the strength. The above-described shutter 1 is wound around a drum (not shown) provided at an upper portion, and rotates the drum to move up and down.

  Further, the shutter 1 has both ends of the slat 2 protruding into a guide rail 3 having a U-shaped cross section, thereby preventing back and forth swinging. FIG. 1 is a cross-sectional view of a main part showing a relationship between a slat 2 and a guide rail 3 in an example. At this time, an outer ridge 4a is provided at front and rear portions of an inner surface of an inner end of the guide rail 3. A space protruding band (hereinafter, referred to as a protruding band) 4 having a space 4c is formed between the protruding band and the inner protruding ridge 4b. In this example, an airtight piece 5 is attached to the space 4c so as to be in contact with the slat 2 to prevent contact noise between the slat 2 and the guide rail 3, generation of abrasion, and intrusion of rainwater or the like into the guide rail 3. In this relationship, both the outer ridge 4a and the inner ridge 4b are hook-shaped portions 4aa and 4ba whose distal ends are bent in opposite directions to prevent the airtight piece 5 from coming off. Further, the tip of the inner side surface of the inner ridge 4b is formed in a relatively large radius R.

  Next, in the present example, a concave portion 6 which falls from the surface is formed on the front surface of the slat 2 existing outside the protruding band 4. The recessed portion 6 has an outer cut surface 6a that falls substantially straight in the front-rear direction, an inner cut surface 6b that falls diagonally rearward on the outer side, and a bottom surface 6c that connects the two 6a and 6b almost in parallel. Has a trapezoidal cross section, and the inner cut surface 6b is formed by a continuous surface from the surface of the slat 2 to the bottom surface 6c, while the outer cut surface 6a is a cut end surface separated from the bottom surface 6c. It consists of. Although it has been described above that the cross-sectional shape of the slat 2 is a shape that bulges to the outer surface side, the concave portion 6 is formed at a part of the central portion in the vertical direction by pressing or the like, and has a strength. Is not formed over the entire height of the recess 6, and in particular, the inward cut surface 6 b separated from the bottom surface 6 c of which the strength is weakened is formed only in the upper half portion with respect to the entire height of the recessed portion 6. The rising surface from the bottom surface 6c at the lower end of the incision surface 6b is set to have a steep gradient to increase the strength of the incision surface 6b. In addition, in this example, the width w of the recess 6 (the distance between the outer cut surface 6a and the inner cut surface 6b) is equal to the width W of the protruding band 4 (the outer protrusion 4a and the inner protrusion 4b). (The length between the outer sides).

  As described above, when a strong wind or the like blows and the slat 2 is inflated forward due to the negative pressure, the slat 2 is pushed forward in the guide rail 3 to compress the airtight piece 5 (not shown in a compressed state). At the same time, in plan view, the center side is pulled to the center side in an inclined state protruding forward. Accordingly, the front surface of the slat 2 moves toward the center while rubbing against the tip (rear end) of the outer ridge 4a and the inner ridge 4b of the ridge 4, but at this time, the width w of the recess 6 and the ridge 4 Has a relation of w <W, the outer cut surface 6a of the recess 6 cannot be engaged with the outer ridge 4a of the protruding band 4 and passes through as it is. When the slat 2 moves further toward the center in this state, the tip of the outer cut surface 6a finally engages with the tip of the inner ridge 4b of the protruding band 4 (accurately, the hook-shaped portion 4ba) and stops. .

  However, even in this state, the front surface outside the recessed portion 6 of the slat 2 is located outside the inner protrusion 4b of the protruding band 4 and the tip of the outer protrusion 4a (accurately, the hook-shaped portion 4aa). ) (It does not fall into the space 4c). In other words, the length of the straight portion outward from the outer cut surface 6a on the front surface of the slat 2 is larger than the gap between the tips of the hook-shaped portions 4aa and 4ba of the projecting band 4. ) (It does not fall into the space 4c). At this time, the distance (depth of the recess 6) D from the contact point P of the slat 2 to the tip of the outer protrusion 4a and the bottom surface 6c of the recess 6 and the inner protrusion 4b from the contact P also. Has a relationship of D> h, a gap is secured between the tip of the inner ridge 4b and the bottom surface 6c of the concave portion 6, and the distance h is given to the slat 2. The moving force to the center side acts to strengthen the engagement of the outer cutting surface 6a, but does not release the engagement.

  On the other hand, when the wind or the like is settled, the slat 2 does not bend and tries to return to the original state. That is, the engagement of the outer cut surface 6a of the concave portion 6 which is engaged with the inner ridge 4b of the protruding band 4 is released, and the slat 2 tends to move outward. At this time, since the front surface of the slat 2 outside the recess 6 is not dropped into the protruding band 4, this movement is not suppressed. At this time, if the inward cut surface 6b of the concave portion 6 is a slope toward the front side from the center, the slope hits the corner of the tip of the inner ridge 4b, and the slat 2 is quickly retracted. Smooth this movement. Therefore, in this example, the inward cut surface 6b of the concave portion 6 is formed as the inclined portion as described above. In addition, actively forming the tip of the inner side surface of the inner ridge 4b in the radius R contributes to smoothing this movement.

  FIG. 2 is a cross-sectional view of a main part showing the relationship between the slat 2 and the guide rail 3 showing another example. In this example, the outer side surface of the outer ridge 4a of the band 4 is outward. The slope portion U is inclined more forward. In this embodiment, the distance (depth of the recess 6) D from the contact point P of the slat 2 to the tip of the outer protrusion 4a (the depth of the recess 6) and the inner protrusion from the contact P The relationship of the distance h to the tip of 4b is D> h, but the relationship of the width w of the recess 6 and the width W of the protruding band 4 is w> W. According to this, when the slat 2 expands forward and is pulled toward the center, first, the projecting band 4 fits into the recessed portion 6 in a relation of w> W. Since the side surface has the slope U, the outer cut surface 6a of the recess 6 runs up the slope, passes through the space 4c, and the tip of the inner protrusion 4b (accurately, the hook-shaped portion). 4ba).

  Therefore, no special restriction is required for the relationship between the width w of the recess 6 and the width W of the protruding band 4 in this example. Also in this case, the length of the straight portion outside the outer cut surface 6a on the front surface of the slat 2 is larger than the gap between the tips of the hook-shaped portions 4aa and 4ba of the protruding band 4, and The front surface outside the portion 6 comes into contact with the tip (hook-shaped portion 4aa) of the outer ridge 4a of the protruding band 4 at the contact point P. At this time, the relation of D> h is satisfied. A gap is secured between the slat 2 and the bottom surface 6 c of the recess 6, and the moving force toward the center applied to the slat 2 is such that the outer cut surface 6 a of the recess 6 is It acts to strengthen the engagement of the ridge 4b with the corner and does not disengage it.

  FIG. 3 is a sectional view of a main part showing a relationship between the slat 2 and the guide rail 3 showing another example, FIG. 9 is a perspective view of the slat 2, and FIG. 10 is a side view. Instead of forming a recess in the slat 2, a cut-and-raised portion 7 protruding forward from the surface is formed. A flat portion 7b is formed outwardly from the cut-and-raised surface 7a toward the side, and further has a cross-sectional shape which is inclined obliquely rearward toward the outside. In this case, the side cross-sectional shape of the slat 2 is bulged rearward at the center, contrary to the previous embodiments. According to this, also in this example, since the outer side surface of the outer ridge 4a has the slope portion U, when the slat 2 expands forward and is pulled to the center side, the cut-and-raised portion 7 is raised. The slope 7a runs up the slope, and the tip of the slope 7a passes through the space 4c of the band 4 and engages with the tip of the inner ridge 4b (the hook-shaped portion 4ba).

  Also in this case, the length of the flat portion 7b, which is a straight portion outside the cut-and-raised surface 7a on the front surface of the slat 2, is larger than the gap between the tips of the hook-shaped portions 4aa and 4ba of the projecting band 4. Then, the front surface outside the cut-and-raised surface 7a of the slat 2 comes into contact with the tip (hook-shaped portion 4aa) of the outer ridge 4a of the protruding band 4 at the contact point P1. Since the distance D1 to the surface and the distance h1 from the contact point P1 to the tip of the inward ridge 4b are in a relationship of D1> h1, the distance D1 between the tip of the inward ridge 4b and the surface of the slat 2 is satisfied. Means that a gap is ensured, and the pulling force for moving the slat 2 toward the center acts in a direction to increase the bite, and does not become a force acting for detachment. The cut-and-raised portion 7 can be formed to have a cross section inclined backward toward the outer side over the entire width. However, as in the present example, the inwardly protruding portion is provided with the flat portion 7b. A larger gap can be secured between the tip of the ridge 4b and the surface of the slat 2.

  Thus, the present invention provides a useful function to the shutter that covers the outside of the opening of the building, but covers the inside like a blind as long as it is guided by the guide rail. Is also good. In this case, the slats do not necessarily have to be in the form of a small unit as long as the slats are flexible enough to be wound around the drum.

FIG. 3 is a cross-sectional view of a main part showing a relationship between a slat and a guide rail (Example 1). FIG. 9 is a cross-sectional view of a main part showing a relationship between a slat and a guide rail (Example 2). FIG. 13 is a cross-sectional view of a main part showing a relationship between a slat and a guide rail (Example 3). It is principal part sectional drawing which shows the relationship between a slat and a guide rail (conventional example). It is a perspective view of a slat. It is a side view of a slat. It is AA sectional drawing of FIG. It is a front view of a shutter. It is a front view of a slat (Example 3). It is a side view of a slat (Example 3).

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Shutter 2 Slat 3 Guide rail 4 Inner ridge 5 of outer ridge 4b 空間 of space ridge 4a 〃 Sealing piece 6 Outer cut surface 6b of concave portion 6a 内 Inner notch surface 6c 〃 of outer cut surface 6b 〃 Bottom 7 Cut-and-raised portion 7a Cut-and-raised surface 7b Flat portion W Width of space ridge w Width of recess P Contact point D between the surface of the slat and the tip of the outward ridge From contact point P to the bottom of the recess The distance h from the contact point P to the tip of the inner ridge. The contact point D1 between the flat portion of the cut-and-raised portion and the tip of the outer ridge. The distance h1 from the contact point P1 to the surface of the slat. To the tip of the inward ridge from the slope U of the outward ridge

Claims (6)

In a shutter having a slat connected to be able to bend up and down and a guide rail having a U-shaped cross section into which both ends of the slat enter, an outer ridge is provided on an inner surface of an inner end on a front side of the guide rail. And a space protruding band having a space between the inner protruding strip and the front side of the slat existing outside the space protruding band, between the outer cut surface and the inner cut surface. When the slat is pulled to the center side in an inclined state where the center side protrudes forward, the tip of the outer notch surface of the recessed part is formed as a concave part with a trapezoid. At the same time as engaging with the tip of the inner ridge, at this time, a gap is secured between the bottom surface of the concave portion and the inner ridge of the space ridge, and its movement is regulated. A shutter characterized by being provided. In a shutter having a slat connected to be able to bend up and down and a guide rail having a U-shaped cross section into which both ends of the slat enter, an outer ridge is provided on an inner surface of an inner end on a front side of the guide rail. And a ridge with a space having a space between the inner ridge and the ridge, and a cut-and-raised portion whose cut-and-raised surface faces inward is provided on the front surface of the slat that exists outside the ridge with the space. When the slat is formed and pulled toward the center in an inclined state in which the center side projects forward, the tip of the cut-and-raised surface of the cut-and-raised portion engages with the tip of the inward ridge of the space ridge. In addition, at this time, a gap is secured between the surface of the slat and the inner ridge of the space ridge, and the movement thereof is regulated. 2. The shutter according to claim 1, wherein the width of the recess is smaller than the width of the space band. 3. The shutter according to claim 1, wherein an outer side surface of an outer ridge of the space ridge is inclined forward. 2. The shutter according to claim 1, wherein the clearance between the bottom surface of the concave portion and the inner ridge of the space ridge is secured by contact of the slat with the tip of the outer ridge. 3. The shutter according to claim 2, wherein the clearance between the surface of the slat and the inner ridge of the space ridge is secured by abutment of the cut-and-raised portion to the tip of the outer ridge.

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