JP7465504B2 - Shutter Reinforcement Support Device - Google Patents

Description

The present invention relates to shutter technology such as heavy-duty shutters and management shutters that are installed primarily at the entrances of commercial buildings, schools, hospitals, factories, homes, and other buildings and facilities, and in particular to a shutter reinforcing and supporting device that prevents the shutter curtain from being blown inward, bent, or flipped over by strong winds, water pressure, or deliberate artificial force (for example, striking force from a hammer, etc.) applied to the shutter curtain from the outside.

Conventionally, a configuration has been known in which a rod-shaped, rod-shaped or tubular reinforcing member is placed vertically or diagonally on the inside of the shutter curtain (e.g., inside the building) as a means of reinforcing the shutter curtain against external forces (see Patent Documents 1 to 4).

Such a shutter reinforcement means is provided with a means for storing the reinforcement member so that it does not get in the way when the shutter curtain is open.

For example, a configuration is known in which a guide member for running, such as a rail or groove, is provided along the upper end of the opening (entrance/exit) of the building in which the shutter is provided, and the upper end of the reinforcing member is movable along the guide member and stored on the side of the opening of the building (see Patent Documents 1 and 3).

Another known method for storing reinforcing members is to rotatably attach the upper end of the reinforcing member to the upper side of the building opening, and fold or expand the reinforcing member while rotating around its upper end, allowing it to be stored along the upper edge of the building opening (see Patent Documents 2 and 4).

Japanese Patent No. 4697644 Japanese Patent No. 5489044 Japanese Utility Model Publication No. 48-7188 Japanese Utility Model Application Publication No. 4-48395

In the shutter reinforcing support device, the following configuration is important in actual use.
(1) When the shutter curtain is opened, the reinforcing member needs to be stored away from the opening of the building in a position that allows the opening of the building to be opened sufficiently and does not hinder entry or exit, and is therefore configured to be located away from the opening frame that constitutes the opening of the building, rather than next to it, so as to allow the opening to be opened sufficiently and not to hinder entry or exit.

(2) When the shutter curtain is opened, the reinforcing member must be able to be easily withdrawn from the opening of the building and securely placed and stored. In particular, in the event of an emergency such as a fire, it is extremely important that the reinforcing member can be easily withdrawn from the opening of the building.

In addition, when closing the shutter curtain, it is necessary that it can be easily and reliably positioned in the reinforcing support position facing the indoor surface of the shutter curtain. In short, it is necessary to have a configuration that allows the reinforcing member to be easily retracted and stored when the shutter is opened and closed, and to be easily positioned in the reinforcing support position, and that also allows it to be reliably positioned in the retracted storage position and the reinforcing support position.

(3) To prevent the shutter curtain from being blown indoors, bent, or turned over by the force of a strong wind or other force from the outdoors, it is necessary to use a reinforcing member to provide sufficient support from the indoor side.

However, in all of the inventions described in Patent Documents 1 to 4, the reinforcing member is positioned close to the building opening even when the structure is evacuated or stored, and does not necessarily meet the requirement of (1) above. There is a risk that the reinforcing member may accidentally protrude into part of the building opening when the building is opened, and it is also possible that it may interfere with entry and exit.

In addition, it is believed that there is room for further improvement in the inventions described in Patent Documents 1 to 4 with regard to the ease of operation of installing the reinforcing members when opening and closing the shutter curtain, and of retracting and storing them.

Furthermore, in the inventions described in Patent Documents 1 to 4, when the shutter curtain is closed and the reinforcing member is installed inside the shutter, for example, the upper end of the reinforcing member is only supported by the guide member or by the rotating support member, and it is considered that the strength is not necessarily sufficient when an external force due to a storm or the like is applied from outside the shutter curtain.

The present invention aims to solve the above-mentioned problems of the conventional art, and aims to realize a shutter reinforcing and support device that allows the reinforcing member to be retracted and stored in a place that does not interfere with the opening of the building, allows the reinforcing member to be easily and reliably retracted and stored when the shutter curtain is opened, and allows the reinforcing member to be easily and reliably positioned inside the shutter curtain when it is closed, and further allows the shutter curtain to be supported and reinforced with high strength when positioned inside the shutter curtain.

In order to solve the above problems, the present invention provides a reinforcing and supporting device for shutters that has a shutter curtain that can be rolled up inside a shutter box, and the reinforcing and supporting device for shutters includes a reinforcing member that supports and reinforces the shutter curtain from the indoor side, and a horizontally-installed guide rail that suspends the reinforcing member vertically and is movable in the width direction of the shutter curtain. The guide rail includes a first guide section that runs along the width direction of the shutter box, and a guide rail that is continuous with the first guide section and extends from the shutter box side toward the indoor side and a position away from the shutter to the side. and a second guide part, the first guide part and the second guide part are each provided with a stop plate with a locking hole, and the reinforcing member is characterized in that it comprises a reinforcing member main body that abuts against the shutter curtain from the indoor side to support it when a force is applied to the shutter curtain from the outdoor side, an operation holding mechanism with a locking piece that can be engaged and disengaged with the locking hole, a hanging part for suspending the reinforcing member on the guide rail to make it movable, and a fixed holding mechanism with a locking rod that can be engaged and disengaged with an engagement hole formed in the floor surface.

In order to solve the above problems, the present invention provides a reinforcing and supporting device for shutters that has a shutter curtain that can be rolled up inside a shutter box, the reinforcing and supporting device for shutters that has a reinforcing member that supports and reinforces the shutter curtain from the indoor side, and a horizontally installed guide rail that suspends the reinforcing member vertically and movable in the width direction of the shutter curtain, the guide rail has a first guide portion that runs along the width direction of the shutter box, and a second guide portion that is continuous with the first guide portion and extends from the shutter box side toward the indoor side and a position away from the shutter to the side, the first guide portion and the second guide portion each have a stop plate with a locking hole, The reinforcing member has a reinforcing member main body that abuts against the shutter curtain from the indoor side to reinforce and support it when a force is applied to the shutter curtain from the outdoor side, the reinforcing member main body has an upper square tube and a lower square tube that is incorporated into the upper square tube so that it can slide up and down, the upper square tube has an operation holding mechanism with a locking piece that can engage with the locking hole, and a hanging part for hanging the reinforcing member on the guide rail to make it movable, the lower square tube has a latch mechanism that can be engaged and disengaged with the upper square tube and can hold the lower square tube at a specified height position relative to the floor surface, and a fixed holding mechanism with a locking rod that can be engaged and disengaged with an engagement hole formed in the floor surface.

In order to solve the above problems, the present invention provides a reinforcing and supporting device for shutters that has a shutter curtain that can be rolled up inside a shutter box, the reinforcing and supporting device for shutters that has a reinforcing member that supports and reinforces the shutter curtain from the indoor side, and a horizontally installed guide rail that suspends the reinforcing member vertically and can move in the width direction of the shutter curtain, the guide rail having a first guide section that runs along the width direction of the shutter box, a second guide section that is continuous with the first guide section and extends away from the shutter box side toward the indoor side, and a second guide section that is continuous with the second guide section and extends toward the indoor side of the shutter box. and a third guide portion extending laterally away from the shutter, the first guide portion and the third guide portion each have a stop plate with a locking hole, and the reinforcing member includes a reinforcing member main body that abuts against the shutter curtain from the indoor side to support it when a force is applied to the shutter curtain from the outdoor side, an operation holding mechanism with a locking piece that can be engaged and disengaged with the locking hole, a hanging portion for suspending the reinforcing member on the guide rail to make it movable, and a fixed holding mechanism with a locking rod that can be engaged and disengaged with an engagement hole formed in the floor surface.

In order to solve the above problems, the present invention provides a reinforcing and supporting device for shutters that has a shutter curtain that can be rolled up inside a shutter box, the reinforcing and supporting device for shutters that has a reinforcing member that supports and reinforces the shutter curtain from the indoor side, and a horizontally installed guide rail that suspends the reinforcing member vertically and can move in the lateral direction of the shutter curtain, the guide rail has a first guide portion that runs along the lateral direction of the shutter box, a second guide portion that is continuous with the first guide portion and extends away from the shutter box side toward the indoor side, and a third guide portion that is continuous with the second guide portion and extends toward a position on the indoor side of the shutter box away from the shutter to the side, and the first guide portion and the third guide portion have The shutter curtain is provided with a stop plate having a locking hole, and the reinforcing member has a reinforcing member main body that abuts against the shutter curtain from the indoor side to reinforce and support it when a force is applied to the shutter curtain from the outdoor side, the reinforcing member main body has an upper square tube and a lower square tube that is incorporated into the upper square tube so that it can slide up and down, the upper square tube has an operation holding mechanism with a locking piece that can engage with the locking hole, and a hanging part for hanging the reinforcing member on the guide rail to make it movable, and the lower square tube has a latch mechanism that can be engaged and disengaged with the upper square tube and can hold the lower square tube at a predetermined height position relative to the floor surface, and a fixed holding mechanism with a locking rod that can be engaged and disengaged with an engagement hole formed in the floor surface.

The locking piece of the operation retention mechanism is provided at the upper end of an operating rod that can move up and down along the upper rectangular tube, and it is preferable that an operating bar is provided at the lower end of the operating rod.

The latch mechanism may include a latch piece rotatably attached to the lower rectangular tube, and the latch piece may be configured to be engageable and disengageable with a latch hole formed in the upper rectangular tube.

The reinforcing member may be configured to have multiple members.

The shutter reinforcing support device according to the present invention provides the following effects.
(1) When the shutter curtain is opened, the reinforcing member can be retracted and stored away from the opening of the building, so that the opening of the building is wide enough to not hinder entry or exit.
(2) The reinforcing member can be easily and reliably retracted, stored, and set in place for reinforcing support when the shutter curtain is opened or closed.
(3) Since the shutter curtain can be reinforced from the inside with great strength, even if a large force is applied to the shutter curtain from the outside, the shutter curtain is unlikely to be fanned, bent, or turned over.

FIG. 1(a) is a plan view showing the overall configuration of a first embodiment of a shutter reinforcement support device according to the present invention, in which (a) is a view of the guide rail from below (viewed in the A-A direction in FIG. 1(b)), and (b) is a view of the shutter and the shutter reinforcement support device as seen from the indoor side. In the above-mentioned Example 1, (a) is a view of only the guide rail viewed from diagonally below on the indoor side, and (b) is a view of the reinforcing member positioned at a position on the base end side of the guide rail (retracted/storage position) viewed from diagonally below on the indoor side. 1A and 1B are diagrams illustrating the state in which the reinforcing member is fixed in a position on the base end side of the guide rail (retracted/stored position) in the above-mentioned Example 1, where (a) is a diagram of the reinforcing member viewed from the front on the indoor side, and (b) is an enlarged view of the latch mechanism and the fixed holding mechanism. 1A and 1B are diagrams showing a state in which the reinforcing member can be moved along the guide rail in the above-mentioned Example 1, where (a) is a diagram showing the reinforcing member from the front on the indoor side, and (b) is an enlarged view of the latch mechanism and the fixed holding mechanism. 4A and 4B are diagrams showing a state in which the reinforcing member can be moved along the guide rail in the above-mentioned Example 1, where (a) is a diagram showing the reinforcing member as viewed in the A-A direction of FIG. 4A, and (b) is a diagram showing the reinforcing member as viewed in the B-B direction of FIG. 5A. 1A and 1B are diagrams illustrating the state in which the reinforcing member is fixed at a position on the tip side of the guide rail (a reinforcing support position that reinforcingly supports the closed shutter curtain from the indoor side) in the above-mentioned Example 1, where (a) is a diagram of the reinforcing member as viewed from the front on the indoor side, and (b) is an enlarged view of the latch mechanism and the fixed holding mechanism. This is a figure explaining the state in which the reinforcing member is fixed at a position on the tip side of the guide rail (a reinforcing support position that reinforcingly supports the closed shutter curtain from the indoor side) in the above-mentioned Example 1, where (a) is a view taken in the A-A direction in Figure 6(a) and (b) is a view taken in the B-B direction in Figure 7(a). (a) is a view from diagonally below on the indoor side showing the state in which the reinforcing member has moved close to the position at the tip of the guide rail (reinforcement support position), (b) is a vertical cross-section viewed in the B-B direction showing the state in which the detent protrusion of the fixed holding mechanism can be inserted into the insertion hole, (c) is a vertical cross-section viewed in the CC direction showing the state in which the detent protrusion of the fixed holding mechanism cannot be inserted into the insertion hole and is detained, and (d) is a view showing the state in which a lid is inserted into the engaging hole in the floor surface to close it. 1A is a plan view showing a modified example of the guide rail of the first embodiment, and FIG. 1B is a plan view showing a guide rail of a second embodiment of a shutter reinforcing support device according to the present invention.

The following describes an embodiment of the shutter reinforcing support device according to the present invention, with reference to the drawings.

Example 1
A first embodiment of a reinforcing support device 1 for a shutter according to the present invention (hereinafter, also simply referred to as a "reinforcing support device") will be described with reference to Figures 1 to 8. Figure 1 shows the overall configuration of the reinforcing support device 1 for a shutter provided at an opening of a building.

In the description of this specification and the invention, the inside of the building (indoor side) with respect to the opening 2 of the building is referred to as the inside, the outside of the building is referred to as the outside, and the left and right sides of the shutter curtain 4 of the shutter 3 as viewed from the indoor side are referred to as the left and right sides. Also, the front side of the shutter curtain 4 as viewed from the indoor side is referred to as the front side.

overall structure:
1(b), the shutter 3 is equipped with left and right guide rails 7, a shutter box 8 at the top, and a shutter curtain 4. The shutter curtain 4 is made up of multiple slats 9, and is rolled up into the shutter box 8 to open the opening 2 of the building, and is unrolled from the state where it is rolled up into the shutter box 8 and descends to close the opening 2 of the building.

As shown in Figs. 1(a), (b), 2(a) and (b), the reinforcing support device 1 comprises a guide rail 12 and a reinforcing member 13 whose upper end is suspended from the guide rail 12 and which is movable and runs along the guide rail 12. A part of the guide rail 12 (a first guide portion 16, which will be described later) is installed horizontally above the shutter 3 so as to be aligned with the lower portion of the shutter box 8.

Guide rail:
1(a), 2(a) and 2(b), the guide rail 12 is formed integrally and continuously from a first guide portion 16, a third guide portion 18 substantially parallel to the first guide portion 16 (although in the first embodiment, it does not have to be substantially parallel), and a second guide portion 17 between the first guide portion 16 and the third guide portion 18. The first guide portion 16 and the third guide portion 18 are preferably formed substantially linearly in a plan view.

The first to third guide sections 16, 17, and 18 are simply named for the longitudinal sections (areas) of one guide rail 12 for the sake of convenience of explanation, and do not have different cross-sectional shapes perpendicular to the longitudinal direction. The guide rail 12 is basically a single rail, but in manufacturing, a single rail may be manufactured by bending or the like, or the first to third guide sections 16, 17, and 18 may be manufactured as separate bodies and then connected so as to be continuous with each other to form a single, integrated rail.

As shown in a plan view from below in FIG. 1(a) and in perspective views from diagonally below in FIGS. 2(a) and 2(b), the first guide section 16 is installed horizontally so as to extend along the bottom of the shutter box 8 from approximately the center to the left end in the left-right direction (also called the "width direction") of the shutter box 8.

The second guide section 17 is bent in a plan view and extends from the shutter box 8 toward the indoor side and to the left, while the third guide section 18 is installed at a position away from the shutter box 8 toward the indoor side and extends further to the left.

Therefore, the tip end 14 of the guide rail 12 (the end of the guide rail 12 facing the shutter box 8, which is the right end in FIG. 1(a)) is located approximately in the center of the shutter 3 in the left-right direction, and the base end 15 (left end) of the guide rail 12 is located to the left of the shutter 3 and away from the inside of the building.

The particularly planar configuration and arrangement of the guide rail 12 is one of the features of the present invention. As shown in Figures 2(a), (b) and 8(a), the guide rail 12 is fixed by a mounting bracket 24 from the lower part of the shutter box 8 to the building structure 21, or directly to the building structure 21.

As shown in Fig. 5(a) and Fig. 7(a), the cross section perpendicular to the longitudinal direction of the guide rail 12 is roughly rectangular, but at the bottom, facing the longitudinal direction, there are formed a pair of rail sections 22 along which the running wheels 39 of the hanging part 37 of the reinforcing member 13 described below run, and a slit 23 that is provided between the pair of rail sections 22 and extends in the longitudinal direction, along which the hanging shaft 38 of the hanging part 37 can move.

A stop plate 26 that is approximately L-shaped in plan view is attached to each of the tip end 14 and base end 15 of the guide rail 12 (see Figures 1(a), 2(a), and 8(a)). This stop plate 26 has an attachment portion 27 that is attached to the guide rail 12 and an engagement hole 28.

The locking hole 28 is a long hole that penetrates vertically in the longitudinal direction of the guide rail 12, and is shaped so that the locking piece 46 of the operation retention mechanism 43 provided on the reinforcing member 13 can be engaged and disengaged (inserted and removed to lock and unlock), as described later.

As described below, the mounting portion 27 of the stop plate 26 is the portion that mounts the stop plate 26 to the guide rail 12 or the like at the tip end 14 and base end 15, respectively, and at the tip end 14 and base end 15, it abuts against the hanging shaft 38 of the hanging portion 37 to restrict movement of the reinforcing member 13 (specifically, overrun in the tip and base end directions).

The locking holes 28 releasably engage the locking pieces 46 of the reinforcing member 13, and hold the reinforcing member 13 in place at the longitudinal tip end 14 and base end 15 positions, respectively, preventing the reinforcing member 13 from moving inadvertently along the slits 23, or from moving indoors even if a force is applied from outdoors, such as in a storm, when the reinforcing member 13 is in the reinforcing support position (the position where it provides reinforcing support on the indoor side of the shutter curtain).

In this embodiment 1, the first guide portion 16 of the guide rail 12 is described as extending from approximately the center of the width of the shutter box 8 toward the left end, but the first guide portion 16 may be configured to extend along, for example, approximately the entire width or 2/3 of the width of the shutter box 8, as long as it is along the width of the shutter box 8.

In addition, for a shutter 3 with a long width, although not shown, multiple reinforcing members 13 may be provided so that the shutter 3 can be simultaneously supported and reinforced at multiple locations on the first guide section 16, and can also be simultaneously retracted and stored at multiple locations on the third guide section 18. In this way, stopping plates 26 may be provided at multiple locations on the first guide section 16 and the third guide section 18 for the multiple reinforcing members 13.

In such a configuration in which multiple stop plates 26 are provided, all of the multiple stop plates 26 are provided with locking holes 28 (not shown), but the mounting parts 27, except for the stop plate 26 at the most distal end of the first guide part 16 and the stop plate 26 at the most proximal end of the third guide part 18, are configured to be attached to the guide rail 12 or the building structure 21 as appropriate so as not to interfere with the movement of the reinforcing member 13 without crossing the slits 23 of the guide rail 12.

Figure 9(a) shows a guide rail 12' which is a modified version of the guide rail 12. The second guide section 17' of this guide rail 12' is formed to be continuous with the first guide section 16 at a substantially right angle so as to extend in a direction away from the shutter box 8 toward the interior side, and the third guide section 18 is formed to be continuous with the second guide section 17' at a substantially right angle so as to extend to the side of the shutter 3 (the left side in this embodiment).

As a result, the guide rail 12' is formed in a crank shape in plan view as a whole, as shown in Figure 9(a). Although the guide rail 12' differs from the guide rail 12 in plan view, the rest of the configuration, i.e., its cross-sectional structure, is the same as the guide rail 12 (see Figure 5, etc.), and the configurations of the related mounting bracket 24, stop plate 26, etc. are also the same.

Reinforcement:
The reinforcing member 13 has a reinforcing member body 32 that abuts and supports the shutter curtain 4 from the indoor side when a force is applied from the outdoor side. As shown in Figures 3 to 6, the reinforcing member body 32 has an upper square tube 33 (a "square tube" is also called a "square pipe") and a lower square tube 34, and the lower square tube 34 is inserted into the upper square tube 33 in a state where it can slide up and down, forming a nested structure.

The top of the upper square tube 33 is provided with a hanging part 37 for suspending the reinforcing member 13 from the guide rail 12 and making it movable. When the shutter curtain 4 is closed and supported by the reinforcing member 13 from the indoor side (see Figures 6(a) and 7(a)), the lower square tube 34 is lowered until it abuts against the floor surface 35.

The nested upper square tube 33 and lower square tube 34 need to support the shutter curtain 4 when subjected to forces such as storms, so it is desirable for the lower square tube 34 to be inserted within a sufficient range in the longitudinal direction within the upper square tube 33 (e.g., within a range of 2/3 or more) even when in contact with the floor surface 35.

As shown in Figures 5(a), (b), 7(a), (b), etc., a hanging part 37 is provided at the upper end of the upper square tube 33. The hanging part 37 is equipped with a hanging shaft 38 and a pair of running wheels 39 provided at the upper end of the hanging shaft 38. The lower end of the hanging shaft 38 is fixed to the upper square tube 33 and extends into the guide rail 12 through the slit 23.

The running wheels 39 allow the guide rail 12 to run, thereby allowing the reinforcing member 13 to move between the tip end 14 of the guide rail 12 and the base end 15 of the guide rail 12.

An operation and holding mechanism 43 is provided on the front side (inner surface of the building) of the upper rectangular tube 33 for operating the reinforcing member 13 when the shutter curtain 4 is opened or closed (see FIG. 1(b) and (a) in each of FIGS. 3 to 8).

The function of the operating and holding mechanism 43 is to move the reinforcing member 13 along the guide rail 12 toward the tip end 14 and base end 15 when the shutter curtain 4 is opened or closed, and to engage and hold the reinforcing member 13 at the tip end 14 and base end 15 positions so that it does not shift in the longitudinal direction of the guide rail 12 or in the indoor/outdoor direction.

As shown in FIG. 3(a) and other figures, the operation holding mechanism 43 comprises an operating rod 44 that can move up and down along the front surface of the upper square tube 33, an operating bar 45 that is rotatably attached to the lower end of the operating rod 44 (see FIG. 5(a)), and a locking piece 46 that is fixed to the upper end of the operating rod 44 so as to extend upward. The locking piece 46 is formed long along the longitudinal direction of the guide rail so that it can be engaged and disengaged with the locking hole 28 of the stop plate 26.

An upper support bracket 50 with a roughly U-shaped cross section is fixed to the upper front of the upper rectangular tube 33 (see FIG. 2(b) and (a) of each of FIGS. 3 to 8). The upper support bracket 50 has a roughly U-shaped cross section and has a horizontal upper support plate 51 and a lower support plate 52.

As shown in FIG. 5(a), the upper support plate 51 has a support hole through which the locking piece 46 is inserted and slidably supported, and the lower support plate 52 has a support hole through which the operating rod 44 is inserted and slidably supported.

Also, a lower support bracket 56 with a generally L-shaped cross section is fixed to the front surface of the upper square tube 33 below the upper support bracket 50 (see FIG. 2(b) and (a) of each of FIGS. 3 to 7). The lower support bracket 56 has a horizontal support plate 57 with a support hole (a hole through which the operating rod 44 is inserted and slidably supported).

The operating rod 44 is inserted through the support hole of the lower support plate 52 of the upper support bracket 50 and through the support hole of the support plate 57 of the lower support bracket, and can move up and down along the upper square tube 33. As described above, the locking piece 46 is inserted through the support hole of the upper support plate 51 of the upper support bracket 50 and is guided up and down.

A coil spring 60 through which the operating rod 44 passes is disposed between the upper support plate 51 and the lower support plate 52 of the upper support bracket 50 (see (a) in each of Figures 3 to 7). The upper end of the coil spring 60 is fixed to the operating rod 44, and its lower end rests on the lower support plate 52.

As a result, the operating rod 44 and the locking piece 46 attached to its upper end are constantly biased upward by the coil spring 60. As will be described later, in order to release the locking piece 46 from the locking hole 28 of the stop plate 26 of the guide rail 12, the operating rod 45 is pulled downward against the elastic force of the coil spring 60, and the locking piece 46 can be removed from the locking hole 28.

When opening and closing the shutter curtain 4, the reinforcing member 13 is moved along the guide rail 12 between the tip end 14 and the base end 15. During this movement, the lower square tube 34 is lifted up so that it is inserted into the upper square tube 33 so that it does not come into contact with the floor surface 35, and in this lifted state, it is locked by the latch mechanism 63 so that it does not fall.

The latch mechanism 63 is provided on the side (left side in this embodiment) of the lower square tube 34, as shown in Figures 3(b), 4(b), and 6(b). The latch mechanism 63 has a latch piece 65 that is pivoted to the lower square tube 34 via a pivot bracket 64. A latch protrusion 66 is formed on the upper end of the latch piece 65, facing the upper square tube 33 and the lower square tube 34.

A spring mounting shaft 67 that protrudes from the left side surface of the lower rectangular tube 34 is inserted into the lower end of the latch piece 65. A gripping portion 68 is provided at the tip of the spring mounting shaft 67 facing the outside of the latch piece 65. A coil spring 69 is provided around the mounting shaft 67 between the latch piece 65 and the lower rectangular tube 34.

The coil spring 69 constantly biases the latch protrusion 66 of the latch piece 65 toward the upper square tube 33 and the lower square tube 34. The upper square tube 33 is formed with a latch hole 72 into which the latch protrusion 66 engages.

Although not shown, a latch hole may be formed on the surface of the lower square tube 34 corresponding to the latch hole 72, so that when the latch protrusion 66 engages with the latch hole 72 of the upper square tube 33, the latch protrusion 66 also engages with the lower square tube 34.

By lifting the lower square tube 34 that is in contact with the floor surface 35 and engaging the latch protrusion 66 with the latch hole 72 (and the latch hole if the lower square tube 34 has one), the lower square tube 34 can be positioned above and away from the floor surface 35 (see Figures 4(a) and (b), 5(a) and (b)).

In addition, by pushing the gripping portion 68 toward the lower rectangular tube 34 against the coil spring 69 and disengaging the latch protrusion 66 from the latch hole 72, the lower rectangular tube 34 can be lowered onto the floor surface 35 (see Figures 3(a), (b), 6(a), (b), etc.).

Fixed-holding mechanisms 75 are provided on the left and right side surfaces of the lower end of the lower rectangular tube 34 (see Fig. 1(b), Figs. 3 to 7, etc.). The fixed-holding mechanism 75 comprises a guide fitting 76 with a generally U-shaped cross section, and a locking rod 77 that is inserted perpendicularly into the guide fitting 76 and can move up and down. Note that the left and right fixed-holding mechanisms 75 have exactly the same configuration, so in this specification, the configuration of the fixed-holding mechanism 75 on the left side will be described.

The guide fitting 76 is fixed to the side of the lower rectangular tube 34, and the three guide pieces 80, 81, and 82 at the top, middle, and bottom are integrally formed so as to extend horizontally to the side. The three guide pieces 80, 81, and 82 at the top, middle, and bottom have guide holes through which the locking rod 77 is inserted vertically to guide it.

A coil spring 83 is provided between the upper guide piece 80 and the middle guide piece 81, and the locking rod 77 is inserted through it. The coil spring 83 has its lower end fixed to the locking rod 77 and its upper end abutting the lower surface of the upper guide piece 80, and as shown in Figures 3(b) and 6(b), constantly urges the locking rod 77 downward elastically.

A handle 85 is provided on the upper end of the locking rod 77 (see Figs. 3(b), 4(b), 6(b), etc.). As shown in Figs. 8(b) and (c), a return stop protrusion 86 is provided on the lower end of the locking rod 77, protruding horizontally to the side, and the insertion hole 88 of the lower guide piece 82 has a convex hole portion 89 through which the return stop protrusion 86 can pass, and is formed into a keyhole shape overall.

Therefore, from the state shown in FIG. 3(b), by operating the handle 85, the locking rod 77 is pulled upward against the elastic force of the coil spring 83, and as shown in FIG. 8(b), the locking rod 77 is rotated horizontally about its axis so that the locking rod 77 engages with the upper surface of the lower guide piece 82 and does not pass through the insertion hole 88, and the locking rod 77 can be held in a state disengaged from the engagement hole 92, as shown in FIG. 4, FIG. 5, FIG. 8(c), etc.

The reinforcing member 13 is fixed at the tip end 14 and base end 15 of the guide rail 12, and the floor surface 35 corresponding to the fixed position has an engagement hole 92 with which the locking rod 77 engages, as shown in Figures 3 to 7. When the locking rod 77 is not engaged, the engagement hole 92 can be closed with a lid 93, as shown in Figure 8 (d), to prevent the entry of dirt and the like.

As shown in Figures 3 to 7, a handle 94 is attached to the front of the lower square tube 34. Using the handle 94 makes it easier to lift the lower square tube 34 upward in the direction of inserting it into the upper square tube 33 and to hook the latch piece 65 onto the upper square tube 33.

(Action)
The operation of the shutter reinforcing support device 1 according to the present invention, which is configured as described above, will now be described together with its usage state.

Evacuation, storage state:
When the shutter curtain 4 is open, the reinforcing member 13 is retracted to a position away from the shutter 3 and is stored (also referred to as the "retracted/stored position" in this specification). That is, as shown in Fig. 2(b) and Fig. 3(a), the reinforcing member 13 is fixed in the building at a position of the base end 15 of the guide rail 12 that is further left of the opening 2 of the building and the left end of the shutter 3 and slightly inside the building (also referred to as the "retracted/stored position" in this specification).

In this retracted/storage position, as shown in Figures 3(a) and (b), the latch piece 65 of the latch mechanism 63 is disengaged from the latch hole 72 of the upper square tube 33, and the lower square tube 34 descends to the floor surface 35 under its own weight. The lower end of the locking rod 77 of the fixed holding mechanism 75 is biased downward by the elasticity of the coil spring 83 and engages with the engagement hole 9 of the floor surface 35.

In this retracted/stored position, as described above, the reinforcing member 13 is positioned away from the building opening 2 and shutter 3, and does not face or come close to the building opening 2 and shutter 3. Therefore, when goods or people enter or exit, all of the building opening 2 can be used without being obstructed or hindered by the reinforcing member 13.

In addition, in this retracted/stored position, the upper part of the reinforcing member 13 has the locking piece 46 engaged with the locking hole 28 of the stop plate 26, and the lower part has the locking rod 77 of the fixed holding mechanism 75 engaged with the locking hole 9 of the floor surface 35. Therefore, the reinforcing member 13 is firmly fixed at the top and bottom, and there is no risk of it inadvertently moving towards the opening 2 of the building.

Reinforcement support state when shutter curtain is closed:
Next, a case where the shutter curtain 4 is closed and the shutter curtain 4 is reinforced and supported from inside the building by the reinforcing member 13 will be described below.

The locking rod 77 of the fixed holding mechanism 75 is pulled upward from the state shown in Figures 3(a) and (b) against the elastic force of the coil spring 83, and the return stop protrusion 86 is passed through the convex hole portion 89 of the insertion hole 88 in the lower guide piece 82 as shown in Figure 8(b), and then the locking rod 77 is rotated horizontally to prevent the return stop protrusion 86 from passing through the convex hole portion 89 of the insertion hole 88 as shown in Figures 4(b) and 8(c).

As a result, even if the elastic force of the coil spring 83 acts downward on the locking rod 77, the locking rod 77 can be held in a position that does not descend, as shown in Figures 4 and 5.

While pushing the gripping portion 68 of the latch mechanism 63 toward the lower square tube 34, the lower square tube 34 is lifted upward by the handle 94 and moved in the direction of insertion into the upper square tube 33, and then the gripping portion 68 is released and the elasticity of the coil spring 69 causes the latch piece 65 to engage with the latch hole 72 of the upper square tube 33. This holds the lower square tube 34 in an upper position where its bottom end does not abut the floor surface 35, as shown in Figures 4 and 5.

Then, by operating the operating rod 45, as shown in FIG. 5(a), the operating rod 44 is pulled downward against the elastic force of the coil spring, and the locking piece 46 at the upper end of the operating rod 44 is pulled out of the locking hole 28 of the stop plate 26 provided at the base end 15 of the guide rail 12.

In this state, the operating rod 45 is operated to move the reinforcing member 13 along the guide rail 12 toward the tip 14 as shown in FIG. 8(a). The reinforcing member 13 stops in the state where it has moved to the tip 14. Note that even if the reinforcing member 13 moves further toward the tip and attempts to overrun, the hanging shaft 38 comes into contact with the mounting portion 27 of the stop plate 26 and is restricted.

When the downward pull by the operating rod 45 is released at the tip 14 position, the elastic force of the coil spring 60 causes the locking piece 46 at the upper end of the operating rod 44 to engage with the locking hole 28 of the stop plate 26 provided at the tip 14 of the guide rail 12, as shown in Figures 6(a) and 7(a). This causes the upper end of the reinforcing member 13 to be fixed at the tip 14 of the guide rail 12.

Next, the gripping portion 68 of the latch mechanism 63 in the state shown in Figures 4 and 5 is pushed toward the lower square tube 34 against the elastic force of the coil spring 69, the latch protrusion 66 of the latch piece 65 is removed from the latch hole 72 of the upper square tube 33, the latch is released, and the lower square tube 34 is lowered downward until its lower end abuts against the floor surface 35 (see Figures 6 and 7).

Furthermore, the handle 85 of the fixed holding mechanism 75 in the state shown in FIG. 5(a) is rotated to align the return stop protrusion 86 with the protruding hole portion 89 of the insertion hole 88 so that it can pass through. The elasticity of the coil spring 83 causes the locking rod 77 to move down, and the lower end of the locking rod 77 engages with the engagement hole 9 in the floor surface 35, as shown in FIGS. 6 and 7.

This allows the reinforcing member 13 to be fixed at its upper and lower parts at the tip 14 of the guide rail 12 and in a position close to the inside of the shutter curtain 4 (also referred to as the "reinforcing support position" in this specification), making it possible to reinforcingly support the shutter curtain 4 from the inside.

Even if the shutter curtain 4 is subjected to a force from the outdoors, such as a strong wind, the shutter curtain 4 is abutted and supported from the indoor side by the reinforcing member 13, so it is prevented from being blown indoors and flipped over. Moreover, the reinforcing member 13 is equipped with a nested upper square tube 33 and a lower square tube 34, so it is extremely strong.

Furthermore, the reinforcing member 13 is located close to the inside of the shutter curtain 4 and at the tip 14 of the guide rail 12, with the upper end of the locking piece 46 of the operating rod 44 of the operating and holding mechanism 43 engaging with the locking hole 28 of the stop plate 26, and the lower end of the locking rod 77 of the fixed holding mechanism 75 engaging with the locking hole 92 of the floor surface 35.

As a result, the reinforcing member 13 is placed close to the inside of the shutter curtain 4 and is restrained and fixed in a position corresponding to the center of the width. This prevents the reinforcing member 13 from moving or shaking in the lateral direction or inward and outward directions relative to the shutter 3 and the building opening 2.

The locking piece 46 of the operation holding mechanism 43 in the reinforcing member 13 and the locking hole 28 of the stop plate 26 of the guide rail 12 are formed long in the longitudinal direction of the guide rail 12, so that the force exerted on the shutter curtain 4 from the outside can be stably received over a wide area in the width direction.

Operation to the retreat/storage position with opening of the shutter curtain:
The operation of moving the reinforcing member 13 from the reinforcing support position to the retracted/stored position when the shutter curtain 4 is opened will be explained. This operation is the same as the operation of moving the retracted and stored reinforcing member 13 to the reinforcing support position and setting it in place, as described above, so only the key points will be explained.

First, the locking rod 77 of the fixed holding mechanism 75 is pulled upward from the state shown in Figures 6 and 7 against the elastic force of the coil spring 83, removed from the engagement hole 92 of the floor surface 35, and held in the state shown in Figures 4 and 5.

For the latch mechanism 63, the handle 85 is pushed toward the lower square tube 34 against the coil spring 69, the lower square tube 34 is lifted upward and inserted into the upper square tube 33, the latch protrusion 66 of the latch piece 65 engages with the latch hole 72 of the upper square tube 33, and the lower square tube 34 is held in an upper position where its bottom end does not abut the floor surface 35, as shown in Figures 4 and 5.

Then, by operating the operating rod 45, the locking piece 46 of the operating rod 44 in the operation holding mechanism 43 is pulled out from the locking hole 28 of the stop plate 26 provided at the tip end 14 of the guide rail 12 against the elastic force of the coil spring 60, and the reinforcing member 13 is moved along the guide rail 12 to the base end 15 as shown in Figures 4(a) and 5(a), and the locking piece 46 of the operation holding mechanism 43 is engaged with the locking hole 28 of the stop plate 26 as shown in Figures 3(a) and (b).

After moving the reinforcing member 13 along the guide rail 12 to the retracted/stored position of the base end 15 in this way, as shown in Figures 2(b), 3(a), and (b), the reinforcing member 13 is fixed and held in place at that position by the latch mechanism 63 and the fixed holding mechanism 75. This operation is the same as the operation of fixing and holding the reinforcing member 13 at the tip end 14 of the guide rail 12 described above, so a description of this operation will be omitted.

As described above, according to the present invention, the reinforcing member 13 can be easily moved between the retracted/storage position and the reinforcing support position by the operating rod 45 without requiring a large force, and the reinforcing member 13 can be easily installed in each of the retracted/storage position and the reinforcing support position.

Moreover, according to the present invention, in the retracted/storage position and the reinforcing support position, the reinforcing member 13 is engaged with the guide rail 12 and the floor surface 35 by the operating and holding mechanism 43 and the fixed holding mechanism 75 at the top and bottom, respectively, preventing unintentional movement, etc., and providing a significant reinforcing and supporting effect against forces such as storms from outdoors.

In this embodiment 1, the reinforcing member main body 32 is described as having an upper square tube 33 and a lower square tube 34, but it may have three or more nested square tubes. The reinforcing member main body may also have a single square tube, in which case it is preferable to use a square tube whose lower end is slightly above the floor surface so that it can move along the floor surface, and the tube is fixed to the floor surface using a fixed holding mechanism.

Furthermore, the reinforcing member body does not have to be a square tube, but may be a tube of other shapes, such as a circular horizontal cross section, as long as the operation and retention mechanism, latch mechanism, and fixed retention mechanism are attached.

Example 2
As described above in the first embodiment, the guide rail 12 is configured to include the first guide portion 16, the second guide portion 17, and the third guide portion 18. According to such a configuration, the reinforcing member 13 is positioned away from the opening 2 and the shutter 3 of the building when in the retracted/stored position, as described above.

As a result, since it does not face or come close to the building opening 2 and shutter 3, it is possible to use all of the building opening 2 without being hindered or impeded by the reinforcing member 13 when goods or people enter or exit.

However, even if the third guide portion 18 is not provided, if the base end of the second guide portion 17 is formed to extend from a position away from the shutter box 8 toward the interior side to a position away from the shutter 3, an effect equivalent to that of a guide rail 12 having a first guide portion 16, a second guide portion 17, and a third guide portion 18 can be achieved.

That is, in the shutter reinforcing support device according to the present invention, the guide rail is required to be integrally provided with at least a first guide portion having the same structure as the first guide portion 16 in the first embodiment, and a second guide portion formed so as to be continuous with one end of the first guide portion 16 and extend to a position on the indoor side of the shutter box 8 and away from the shutter 3 to the side. An embodiment of a shutter reinforcing support device provided with a guide rail that embodies such a configuration will be described as the second embodiment of the present invention.

As shown in FIG. 9(b), the guide rail 112 of the second embodiment of the shutter reinforcing support device according to the present invention is configured to integrally include a first guide portion 16 that is horizontally installed so as to extend along the bottom of the shutter box 8 from approximately the center in the left-right direction (also called the "width direction") of the shutter box 8 toward one end in the width direction (e.g., the left end), and a second guide portion 117 that is continuous with one end of the first guide portion 16 and is formed so as to extend to a position on the indoor side of the shutter box 8 and away from the shutter 3 to the side.

In Example 2, the configuration other than the guide rail 112 is the same as in Example 1, so the description will be omitted. Regarding the guide rail 112 shown in FIG. 9(b), the same reference numerals will be used for the configuration common to the guide rail 12 in Example 1.

In the second embodiment, as shown in FIG. 9(b), the guide rail 112 includes a first guide portion 16 having the same configuration as in the first embodiment, and a second guide portion 117 that is continuous with the left end of the first guide portion 16 and is gently curved so as to extend from the shutter box 8 toward the indoor side and away from the shutter 3.

The base end side of the second guide portion 117 is curved more toward the indoor side as shown in FIG. 9(b). The second guide portion 117 of the guide rail 112 of Example 2 has the advantage in terms of manufacturing that it is easier to form the bent or curved portion compared to the second guide portion 17 of the guide rail 12 of Example 1.

The base end 15 of the second guide portion 117 is located on the indoor side of the shutter box 8 and away from the shutter 3 to the side, and this position becomes the retracted/stored position of the reinforcing member 13, producing the same effect as in Example 1. Note that the second guide portion 117 of the guide rail 112 may be straight instead of curved, as long as it extends in a direction on the indoor side of the shutter box 8 and away from the shutter 3 to the side.

The above describes the embodiment of the shutter reinforcing support device according to the present invention, but it goes without saying that the present invention is not limited to such an embodiment, and there are various embodiments within the scope of the technical matters described in the claims.

The shutter reinforcing support device of the present invention is best suited for use with heavy-duty shutters facing outdoors, management shutters, and other shutters, but it can also be used with indoor shutters to reinforce fire shutters against fire winds and other factors that may occur indoors during a fire.

1 Shutter reinforcement support device
2. Building openings
3. Shutter
4. Shutter Curtain
7 Guide rail
8. Shutter Box
9 Slats
12, 12', 112 guide rail
13 Reinforcing member
14 Tip of guide rail
15 Base end of guide rail
16 First guide portion
17, 17', 117 Second guide portion
18 Third guide section
21 Building structure
22 Pair of rail portions of guide rail
23 Guide rail slit 24 Mounting bracket
26 Stop sign
27 Mounting part
28 Locking hole 32 Reinforcing member body
33 Upper rectangular tube
34 Lower rectangular tube
35 Floor surface
37 Hanging part
38 Suspension shaft
39 Running wheels
43 Operation retention mechanism
44 Operating rod
45 Operating rod
46 Locking piece
50 Upper support bracket
51 Upper support plate
52 Lower support plate
56 Lower support bracket
57 Support plate
60 Coil spring
63 Latch mechanism
64 Pivot bracket
65 Latch piece
66 Latch protrusion
67 Spring mounting shaft
68 Grip part
69 Coil spring
72 Latch hole
75 Fixed retention mechanism
76 Guide fittings
77 Locking rod
80 Upper guide piece
81 Central guide piece
82 Lower guide piece
83 Coil spring
85 Handle
86 Detent protrusion
88 Lower guide piece insertion hole
89 Convex hole portion of insertion hole
92 Engagement hole on floor surface
93 Lid
94 Handle

Claims (4)

A reinforcing and supporting device for a shutter, which is provided with a shutter curtain that can be rolled up inside a shutter box, includes a reinforcing member that supports and reinforces the shutter curtain from the indoor side, and a horizontally provided guide rail that vertically suspends the reinforcing member and allows it to move in the width direction of the shutter curtain.
The guide rail includes a first guide portion along the width direction of the shutter box, and a second guide portion that is continuous with the first guide portion and extends from the shutter box side toward the indoor side and toward a position away from the shutter laterally;
The first guide portion and the second guide portion are each provided with a stop plate having a locking hole,
The reinforcing member has a reinforcing member main body that abuts against and supports the shutter curtain from the indoor side when a force is applied to the shutter curtain from the outdoor side, and the reinforcing member main body includes an upper square tube and a lower square tube that is incorporated into the upper square tube so as to be slidable in the vertical direction,
The upper rectangular tube includes an operation holding mechanism having a locking piece that can be engaged with the locking hole, and a hanging portion for hanging the reinforcing member on the guide rail to make it movable,
A shutter reinforcing support device characterized in that the lower square tube is equipped with a latch mechanism that releasably engages with the upper square tube and can hold the lower square tube at a predetermined height position relative to the floor surface, and a fixed holding mechanism having a locking rod that can be releasably engaged with an engagement hole formed in the floor surface. A reinforcing and supporting device for a shutter, which is provided with a shutter curtain that can be rolled up inside a shutter box, includes a reinforcing member that supports and reinforces the shutter curtain from the indoor side, and a horizontally provided guide rail that vertically suspends the reinforcing member and allows it to move in the width direction of the shutter curtain.
The guide rail includes a first guide portion along the width direction of the shutter box, a second guide portion connected to the first guide portion and extending away from the shutter box side toward the indoor side , and a third guide portion connected to the second guide portion and extending toward a position away from the shutter laterally on the indoor side of the shutter box,
The first guide portion and the third guide portion are each provided with a stop plate having an engagement hole,
The reinforcing member has a reinforcing member main body that abuts against and supports the shutter curtain from the indoor side when a force is applied to the shutter curtain from the outdoor side, and the reinforcing member main body includes an upper square tube and a lower square tube that is incorporated into the upper square tube so as to be slidable in the vertical direction,
The upper rectangular tube includes an operation holding mechanism having a locking piece that can be engaged with the locking hole, and a hanging portion for hanging the reinforcing member on the guide rail to make it movable,
A shutter reinforcing support device characterized in that the lower square tube is equipped with a latch mechanism that releasably engages with the upper square tube and can hold the lower square tube at a predetermined height position relative to the floor surface, and a fixed holding mechanism having a locking rod that can be releasably engaged with an engagement hole formed in the floor surface. 3. A shutter reinforcing and supporting device as described in claim 1 or 2, characterized in that the locking piece of the operation retention mechanism is provided at the upper end of an operating rod that is movable vertically along the upper square tube, and an operating bar is provided at the lower end of the operating rod . A shutter reinforcing and support device as described in claim 1, 2 or 3, characterized in that the latch mechanism has a latch piece rotatably attached to the lower square tube, and the latch piece is configured to be able to engage and disengage with a latch hole formed in the upper square tube .

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