Opening device

Abstract

To provide an opening device capable of adjusting all slats to the same arbitrary angle in the fully closed state of an opening.SOLUTION: An opening device comprising a plurality of slats which have a sliding member, are provided so as to be movable along a guide rail, and are connected in a bellows shape along a moving direction, the opening device comprising an interlocking bar member provided so as to be movable along an extending direction of the guide rail, each of the plurality of slats includes a slat main body, a support member that rotatably supports the slat main body, and a gear that protrudes from the support member and is coupled to a rotation shaft of the slat main body, the support members of the adjacent slats are rotatably coupled to each other in a bellows shape, the interlocking bar member includes a tooth portion that meshes with the gears of the plurality of slats in the fully closed state, and the interlocking bar member moves along the extending direction of the guide rail in a state where the gear meshes with the tooth portion, whereby the rotation angles of the slat main bodies of the plurality of slats in the fully closed state are adjusted in an interlocking manner.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to an opening device. [Background technology]

[0002] Conventionally, a blind-type storm shutter has been known that is configured as an expander type by connecting multiple links in an X-shape so that they can rotate freely, and has two rage tongues with slats attached to the links (see, for example, Patent Document 1).

[0003] The two slat tongues are connected horizontally. When the two slat tongues are fully retracted, the opening is fully open. When one slat tongue is retracted and the other is extended, the opening is fully closed. Furthermore, when the opening is fully closed, by starting to extend one slat tongue and retracting the other slat tongue, a gap can be created between the slats. This blind shutter is configured to allow sufficient light and ventilation between the slats by expanding the gap until the inclination of each slat is approximately the same. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-285890 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the above-mentioned conventional technology, all slats can only be adjusted to the same angle when the lengths of the two slat tongues are matched, so when the opening is fully closed, it is not possible to freely control the amount of light and ventilation by adjusting all slats to the same angle.

[0006] An object of the present disclosure is to provide an opening device that allows all slats to be adjusted to the same arbitrary angle when the opening is in a fully closed state. [Means for solving the problem]

[0007] The present disclosure provides an opening device comprising: a guide rail attached to an opening in a building; and a plurality of slats having sliding members that engage with the guide rail and are provided movably along the guide rail, and connected in an accordion-like manner along the movement direction, the opening being fully closed by unfolding the plurality of slats along the guide rail, and the opening being fully opened by folding the plurality of slats, the opening device further comprising an interlocking bar member that is provided movably along the extension direction of the guide rail, the plurality of slats comprising a slat body and a plurality of slats. The present invention relates to an opening device which has a support member that rotatably supports the main body and a gear that protrudes from the support member and is connected to the rotation axis of the slat main body, the support members of adjacent slats are rotatably connected to each other in a bellows-like manner, the interlocking bar member has teeth that mesh with the gears of the multiple slats in a fully closed state, and when the gears are meshed with the teeth, the interlocking bar member moves along the extension direction of the guide rail, thereby interlockingly adjusting the rotation angles of the slat main bodies of the multiple slats in a fully closed state. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a front view of the opening device in the fully closed state in this embodiment, as viewed from the outside of the room. [Figure 2] FIG. 2 is a perspective view showing the structure of a slat of the opening device in the present embodiment. [Figure 3] FIG. 2 is a front view of the opening device in the fully open state in this embodiment, as viewed from the outdoor side. [Figure 4] FIG. 4 is a longitudinal cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 10 is a front view showing the rotation of the slat body of the slat of the present embodiment. [Figure 6] FIG. 10 is a plan view showing the slat of the present embodiment and the interlocking bar member disposed in the retracted position. [Figure 7] FIG. 2 is a plan view showing the slat of the present embodiment and an interlocking bar member disposed at an interlocking position. [Figure 8] FIG. 2 is a plan view showing a state in which the slat body of the slat of the present embodiment is rotated 45 degrees. [Figure 9] FIG. 10 is a front view of the opening device of the present embodiment, in which the slat body is rotated 45 degrees, as viewed from the outdoor side. [Figure 10] FIG. 2 is a front view of the opening device of the present embodiment, in which the slat body is rotated 90 degrees, as viewed from the outdoor side. [Figure 11] 10A and 10B are diagrams illustrating the rotation angle of the slat body of the slat of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings. An opening device 1 according to this embodiment is disposed on the outdoor side X1 of a rectangular opening 100 that opens into a building. The opening device 1 is configured to include an upper guide rail 2 disposed laterally at the top, a lower guide rail 3 disposed laterally at the bottom of the opening 100, a pair of vertical frames 4a, 4b disposed vertically on the left and right of the opening 100, a plurality of slats 5 that shield the opening 100 so that it can be opened and closed, and an interlocking bar member 6 that rotates the plurality of slats 5 in an interlocking manner. The plurality of slats 5 are disposed across the upper guide rail 2 and the lower guide rail 3 and are disposed laterally movable along the upper guide rail 2 and the lower guide rail 3.

[0010] The opening device 1 of this embodiment is a horizontally opening / closing type opening device configured to be able to open and close the opening 100 using a plurality of slats 5. More specifically, the opening device 1 of this embodiment is a one-way sliding type horizontally opening / closing opening device that opens the opening 100 by folding all of the slats 5 toward one vertical frame 4a and closes the opening 100 by unfolding them toward the other vertical frame 4b. The opening device 1 shown in this embodiment is configured to open and close the opening 100 using six slats 5, but the number of slats 5 is not limited to six and is set appropriately depending on the width of one slat and the width of the opening 100.

[0011] Here, the directions in the figure will be defined. Arrows X1-X2 in the figure indicate the indoor / outdoor directions. X1 indicates the outdoor side, and X2 indicates the indoor side. Y1-Y2 is the lateral direction of the opening device 1, and indicates the direction in which the opening 100 is opened and closed by the slats 5. Y1 indicates the closing direction in which the opening 100 is closed by the slats 5, and Y2 indicates the opening direction in which the opening 100 is opened by the slats 5. The upper guide rail 2 and the lower guide rail extend along the Y1-Y2 direction. When the opening device 1 is viewed from the front as shown in Figure 1, the upward direction in the figure is defined as "up" and the downward direction in the figure is defined as "down".

[0012] The slats 5 are plate-like members that are elongated in the vertical direction relative to the width direction. As shown in Fig. 2, the slats 5 each include an upper support member 51, a lower support member 52, a slat body 53, a hoisting wheel 54, a guide pin 55, and a gear 56.

[0013] The upper support member 51 and the lower support member 52 are each made of a metal material such as aluminum, and are each formed as a plate-like member that is elongated in the width direction relative to the up-down direction of the slat 5 and is thin in the thickness direction. The upper support member 51 is disposed at the upper end of the slat 5, and the lower support member 52 is disposed at the lower end of the slat 5. In this embodiment, the upper support member 51 and the lower support member 52 are support members that rotatably support the slat body 53.

[0014] The slat body 53 is made of a metal material such as aluminum, and is formed as a plate-like member that is elongated in the vertical direction relative to the width direction and thin in the thickness direction. The thickness of the slat body 53 is the same as that of the upper support member 51 and the lower support member 52. As shown in FIG. 2 , the slat body 53 has an upper rotation shaft 531 at the center of the upper end in the width direction and a lower rotation shaft 532 at the center of the lower end in the width direction. The upper rotation shaft 531 and the lower rotation shaft 532 are arranged coaxially in the vertical direction and protrude from the upper and lower ends of the slat body 53, respectively. The upper rotation shaft 531 is rotatably attached to the upper support member 51, and the lower rotation shaft 532 is rotatably attached to the lower support member 52. As a result, the slat body 53 is supported between the upper support member 51 and the lower support member 52 so as to be rotatable about the upper rotation shaft 531 and the lower rotation shaft 532.

[0015] The upper support members 51, 51 and the lower support members 52, 52 of adjacent slats 5, 5 are rotatably connected to each other. As a result, the multiple slats 5 are connected in an accordion-like manner via connecting portions 511, 521 formed between adjacent upper support members 51, 51 and between adjacent lower support members 52, 52, respectively. The rotation axes of the connecting portions 511, 521 are arranged along the vertical direction. The slat bodies 53, 53 of adjacent slats 5, 5 are not connected to each other, but the widthwise ends of adjacent slat bodies 53, 53 are configured to overlap each other in the indoor-outdoor direction in the fully closed state so that no gaps are formed between adjacent slat bodies 53, 53.

[0016] The hoisting wheel 54 is attached to the upper support member 51 of each slat 5, one by one, so as to protrude upward. As shown in FIGS. 2 and 4, the hoisting wheel 54 is attached to the end of the upper support member 51 of each slat 5 on the side that moves toward the interior side X2 when folded. Each hoisting wheel 54 engages with the upper guide rail 2 and is placed rollably on the rail portion 21 within the upper guide rail 2. This allows the multiple slats 5 to be suspended movably along the rail portion 21 of the upper guide rail 2. In this embodiment, the hoisting wheel 54 is a sliding member that engages with the guide rail and slides along the guide rail.

[0017] The guide pins 55 are attached to the lower support members 52 of each slat 5, one each, so as to protrude downward. As shown in FIGS. 2 and 4 , the guide pins 55 are provided coaxially with the shafts 541 of the hoisting wheels 54 at the end of the lower support members 52 of each slat 5 that moves toward the room interior side X2 when folded. Each guide pin 55 engages with the grooves 31 of the lower guide rail 3. As a result, when the hoisting wheels 54 move along the upper guide rail 2, the lower ends of the multiple slats 5 are guided along the grooves 31 of the lower guide rail 3. In this embodiment, the guide pins 55 are sliding members that engage with the guide rails and slide along the guide rails.

[0018] As shown in Fig. 2, the multiple slats 5 connected in an accordion-like manner are folded in the Y2 direction toward one of the vertical frames 4a by moving the connecting portions 511, 521 at both ends of each slat 5 in the width direction so that they alternately protrude toward the outside X1 and the inside X2 of the room. The hoisting wheel 54 moves in the Y2 direction toward the vertical frame 4a along the upper guide rail 2. The guide pin 55 moves in the Y2 direction toward the vertical frame 4a along the lower guide rail 3. In this way, the opening device 1 fully opens the opening 100, as shown in Fig. 3.

[0019] The multiple slats 5 connected in an accordion-like manner are deployed in the Y1 direction toward the other vertical frame 4b by moving the upper support members 51 and the lower support members 52 so that they are aligned in a horizontal line. The hoisting wheel 54 moves toward the vertical frame 4b along the upper guide rail 2. The guide pin 55 moves toward the vertical frame 4b along the lower guide rail 3. In this way, the opening device 1 fully closes the opening 100, as shown in FIG. 1.

[0020] The leftmost slat 5 shown in FIG. 1 does not move laterally but is rotatably mounted between the upper guide rail 2 and the lower guide rail 3 around rotation axes 5a and 5b protruding from the ends of the upper support member 51 and the lower support member 52 on the vertical frame 4a side. The rightmost slat 5 shown in FIG. 1 has a vertical frame portion 50 that abuts against the vertical frame 4b when fully closed. The opening device 1 of this embodiment is configured so that the user can open and close the opening 100 by manually moving the vertical frame portion 50 laterally. However, the opening device of the present disclosure may also be configured so that each slat 5 is moved laterally by, for example, pulling an operating cord that operates a slat movement mechanism (not shown). The opening device of the present disclosure may also be configured so that each slat 5 is moved laterally by driving a motor (not shown).

[0021] The gear 56 is rotatably attached to the center of the upper support member 51 of each slat 5 in the width direction, and protrudes upward. The rotation shaft 561 of the gear 56 is coaxially connected to the upper rotation shaft 531 of the slat main body 53. Therefore, as shown in FIG. 5 , when the gear 56 rotates around the rotation shaft 561, the slat main body 53 also rotates in the same direction between the upper support member 51 and the lower support member 52 in conjunction with the rotation of the gear 56.

[0022] As shown in Figure 4, the interlocking bar member 6 is arranged on the outdoor side X1 of the upper guide rail 2. More specifically, a cover material 10 is provided on the upper part of the opening device 1, protruding toward the outdoor side X1 so as to cover the upper part of the slats 5 in the folded state. The upper guide rail 2 is arranged inside the cover material 10. The interlocking bar member 6 is arranged on the outdoor side X1 of the upper guide rail 2 inside the cover material 10. More specifically, the interlocking bar member 6 is arranged inside the cover material 10 at the same height as each gear 56 of the slats 5 in the folded state, and at a position closer to the outdoor side X1 than each gear 56.

[0023] The interlocking bar member 6 is a long plate-like member made of a metal material such as aluminum. The interlocking bar member 6 is arranged parallel to the upper guide rail 2, along the extension direction of the upper guide rail 2. The dimension of the interlocking bar member 6 along the indoor / outdoor direction is greater than the thickness of the slats 5. As shown in Figure 6, the interlocking bar member 6 is formed with gear accommodating grooves 61 that are respectively positioned corresponding to the gears 56 of the multiple slats 5 in the unfolded state, and recesses 62 that are respectively positioned corresponding to the hoists 54.

[0024] Each gear accommodating groove 61 has the same shape. The gear accommodating groove 61 is composed of a gear introduction port 611 that opens to the indoor side X2, an operating portion 612 that receives and rotates the gear 56 introduced through the gear introduction port 611, and a teeth portion 613 that meshes with the gear 56 received in the operating portion 612. The operating portion 612 communicates with the gear introduction port 611. The operating portion 612 extends longitudinally from the gear introduction port 611 in the Y1 direction along the extension direction of the interlocking bar member 6. The teeth portion 613 is provided only on the edge of the inner surface of the operating portion 612 facing the outdoor side X1. The teeth portion 613 is formed in a straight line over the entire length of the operating portion 612 in the Y1-Y2 direction, which is the longitudinal direction of the operating portion 612.

[0025] The recess 62 is formed to open to the indoor side X2, similar to the gear introduction port 611. When the gear 56 is accommodated in the gear accommodating groove 61, the recess 62 accommodates each hoisting wheel 54, thereby preventing the interlocking bar member 6 from interfering with each hoisting wheel 54. The recess 62 extends longitudinally in the Y1 direction along the extension direction of the interlocking bar member 6 from a position corresponding to each hoisting wheel 54 of the multiple slats 5 in the unfolded state.

[0026] As shown in FIG. 4, the interlocking bar members 6 are movable in the X1-X2 and Y1-Y2 directions by a bar movement mechanism 7 disposed inside the cover material 10. Specifically, the bar movement mechanism 7 moves the interlocking bar members 6 between a retracted position (shown in FIG. 6) where the interlocking bar members 6 are retracted to the outside X1 direction from the gears 56 (shown by chain lines in FIG. 6) of the slats 5 in the folded, fully-open state, and an interlocking position (shown in FIG. 7) where the gears 56 of the slats 5 in the unfolded, fully-closed state are accommodated in the gear accommodating grooves 61 and mesh with the teeth 613. The specific structure of the bar movement mechanism 7 is not particularly limited. The bar movement mechanism 7 may be configured to move the interlocking bar members 6 between the retracted position and the interlocking position by, for example, pulling an operating cord for operating the bar movement mechanism 7, or may be configured to move the interlocking bar members 6 between the retracted position and the interlocking position by driving a motor (not shown).

[0027] Next, the operation of adjusting all the slat bodies 53 of the slats 5 in the fully closed state to the same angle in conjunction with each other will be described with reference to FIGS.

[0028] When the slats 5 are deployed to fully close the opening 100, the slat bodies 53 of each slat 5 are arranged substantially parallel in the Y1-Y2 direction, following the arrangement of the upper support members 51 and the lower support members 52. At this time, no gaps are formed between adjacent slat bodies 53, 53, blocking light and ventilation. From this state, as shown in FIG. 7 , the interlocking bar member 6, which is positioned in the retracted position, is moved toward the room side X2 by the operation of the bar movement mechanism 7 and positioned at the interlocking position. At this time, each gear 56 is accommodated in the operating portion 612 of the gear accommodating groove 61 through the gear inlet 611 of the interlocking bar member 6 and engages with the tooth portion 613. Each hoist 54 is accommodated in the recess 62 of the interlocking bar member 6.

[0029] After the interlocking bar member 6 is positioned at the interlocking position, as shown in FIG. 8, when the interlocking bar member 6 moves in the Y2 direction by the operation of the bar movement mechanism 7, the gears 56 in each gear accommodating groove 61 that mesh with the toothed portions 613 rotate in the same direction as the toothed portions 613 move in the Y2 direction. In this embodiment, the interlocking bar member 6 is provided at the edge of the operating portion 612 on the exterior side X1. Therefore, as shown in FIG. 8, as the gears 56 rotate, all of the slat bodies 53 begin to rotate in the same direction in an interlocking manner, with their ends on the Y1 side facing the exterior side X1 and their ends on the Y2 side facing the interior side X2. As a result, as shown in FIG. 9, in the opening device 1 with the opening 100 fully closed, gaps are formed between adjacent slat bodies 53, 53 that allow light and ventilation.

[0030] The rotation angle of the slat body 53 is adjusted by the movement distance of the interlocking bar member 6 in the Y1-Y2 direction. If the rotation angle of the slat body 53 when no gap is formed between adjacent slat bodies 53, 53 is set to 0 degrees, Figures 8 and 9 show a state in which each slat body 53 has been rotated to an angle of 45 degrees. If the interlocking bar member 6 is moved further in the Y2 direction from the state shown in Figure 8, each slat body 53 can be rotated to an angle of 90 degrees, as shown in Figure 10. At this time, the gap between adjacent slat bodies 53, 53 is maximized.

[0031] As shown in Figure 6, the longitudinal length L1 of the operating portion 612 in the gear accommodating groove 61 is set so that movement of the interlocking bar member 6 in the Y2 direction can rotate the gear 56 until the slat body 53 reaches an angle greater than 90 degrees. This makes it possible to adjust the gap between adjacent slat bodies 53, 53 between 0 and the maximum. Similarly, the longitudinal length L2 of the recess 62 in the gear accommodating groove 61 is set so that the interlocking bar member 6 can be moved in the Y2 direction until the slat body 53 reaches an angle greater than 90 degrees. Therefore, there is no risk of the hoist 54 interfering with the interlocking bar member 6 when the interlocking bar member 6 moves.

[0032] By further increasing the longitudinal length L1 of the operating portion 612 of the gear receiving groove 61, i.e., the arrangement length of the tooth portions 613 along the Y1-Y2 direction, the interlocking bar member 6 can rotate the slat body 53 from 90 degrees to nearly 180 degrees, as shown in Fig. 11. This allows the direction of lighting and ventilation through the gap between adjacent slat bodies 53, 53 to be adjusted as desired.

[0033] When the opening device 1 fully opens the opening 100, the interlocking bar member 6 moves furthest in the Y1 direction so that the gear 56 is positioned in the gear introduction port 611, and then moves to the outside X1 toward the retracted position, disengaging the gear 56 from the gear accommodating groove 61. At this time, all of the slat bodies 53 are in a state where no gaps are formed between adjacent slat bodies 53, 53, so that when the user subsequently moves the vertical stile portion 50 in the Y2 direction to fold the slats 5, the adjacent slat bodies 53, 53 will not interfere with each other.

[0034] The opening device 1 according to this embodiment has the following effects: That is, the opening device 1 includes an upper guide rail 2 and a lower guide rail 3 attached to an opening 100 of a building, and a plurality of slats 5 having a hoist 54 and a guide pin 55 that are sliding members that engage with the upper guide rail 2 and the lower guide rail 3, and are provided movably along the upper guide rail 2 and the lower guide rail 3, and are connected in an accordion-like manner along the movement direction, and is configured to fully close the opening 100 by unfolding the plurality of slats 5 along the upper guide rail 2 and the lower guide rail 3, and to fully open the opening 100 by folding the plurality of slats 5, and further includes an interlocking bar member 6 provided movably along the extension direction of the upper guide rail 2 and the lower guide rail 3, and the plurality of slats 5 are Each slat includes a slat body 53, upper and lower support members 51 and 52 that rotatably support the slat body 53, and a gear 56 that protrudes from the upper and lower support members 51 and 52 and is connected to an upper rotation shaft 531 of the slat body 53. The upper support members 51, 51 and the lower support members 52, 52 of adjacent slats 5 are rotatably connected to each other in a bellows-like manner. The interlocking bar member 6 has teeth 613 that mesh with the gears 56 of the multiple slats 5 in the fully closed state. When the gears 56 mesh with the teeth 613, the interlocking bar member 6 moves along the extension directions of the upper guide rail 2 and the lower guide rail 3, thereby adjusting the rotation angles of the slat bodies 53 of the multiple slats 5 in the fully closed state in an interlocked manner. This allows the slat bodies 53 of all slats 5 to be easily adjusted to the same arbitrary angle when the opening 100 is fully closed. Therefore, in a state where the opening device 1 fully closes the opening 100, the amount of light and the amount of ventilation can be freely adjusted according to the user's preference.

[0035] In this embodiment, the interlocking bar member 6 has a plurality of gear accommodating grooves 61 capable of accommodating the gears 56 of the plurality of slats 5, respectively, and the plurality of gear accommodating grooves 61 are formed long along the direction of movement of the interlocking bar member 6, and the teeth 613 are formed on the inner surface of the gear accommodating groove 61 along the longitudinal direction of the gear accommodating groove 61. This allows the gears 56 of each slat 5 to mesh with the teeth 613 within the gear accommodating groove 61, so that the movement of the interlocking bar member 6 can stably interlock the rotation of each slat body 53.

[0036] In this embodiment, when the rotation angle of the slat body 53 when no gap is formed between adjacent slat bodies 53, 53 is defined as 0 degrees, the longitudinal length L1 of the gear accommodating groove 61 is formed so that the slat body 53 rotates to an angle exceeding 90 degrees. This allows the gap between adjacent slat bodies 53, 53 to be adjusted between 0 and maximum, and therefore the amount of light and ventilation can be adjusted freely between 0 and maximum.

[0037] In this embodiment, the interlocking bar member 6 has a recess 62 that avoids interference with the hoisting wheels 54 of the multiple slats 5 in the fully closed state. As a result, when the interlocking bar member 6 is moved to rotate the slat body 53, there is no risk of interference between the hoisting wheels 54 and the interlocking bar member 6.

[0038] In this embodiment, the interlocking bar member 6 is provided to be movable between a retracted position where it is retracted from the gears 56 of the multiple slats 5 in the fully open state, and an interlocking position where the gears 56 of the multiple slats 5 in the fully closed state mesh with the toothed portions 613. This eliminates the risk of interference with the interlocking bar member 6 when the slats 5 are folded or unfolded.

[0039] In the above explanation, a single-pull type opening device 1 that moves the plurality of slats 5 toward one of the vertical frames 4a when the opening 100 is fully open has been shown, but the opening device of the present disclosure may also be a double-pull type opening device in which two sets of the same plurality of slats 5 as above are provided horizontally. Furthermore, in the above embodiment, an opening device 1 that opens and closes the opening 100 by moving the plurality of slats 5 horizontally has been shown, but the opening device of the present disclosure may also be an opening device that opens and closes the opening 100 by moving the plurality of slats vertically.

[0040] The present disclosure includes an opening device according to the following aspects. <Aspect 1> A guide rail attached to an opening in a building; a plurality of slats that have sliding members that engage with the guide rails, are provided so as to be movable along the guide rails, and are connected in a bellows-like manner along the movement direction; An opening device configured to fully close the opening by unfolding the plurality of slats along the guide rail, and to fully open the opening by folding the plurality of slats, The apparatus further includes an interlocking bar member that is movably provided along the extending direction of the guide rail, The plurality of slats are A slat body, a support member that rotatably supports the slat body; a gear protruding from the support member and connected to a rotation shaft of the slat body, The support members of adjacent slats are rotatably connected to each other in a bellows-like manner, the interlocking bar member has teeth that mesh with the gears of the plurality of slats in a fully closed state, An opening device in which the rotation angles of the slat bodies of the multiple slats in the fully closed state are adjusted in conjunction with each other by moving the interlocking bar member along the extension direction of the guide rail while the gear is engaged with the tooth portion.

[0041] <Aspect 2> the interlocking bar member has a plurality of gear accommodating grooves capable of accommodating the gears of the plurality of slats, respectively; The plurality of gear accommodating grooves are formed elongated along the movement direction of the interlocking bar member, The opening device according to aspect 1, wherein the teeth are formed on the inner surface of the gear accommodating groove along the longitudinal direction of the gear accommodating groove.

[0042] <Aspect 3> An opening device as described in aspect 2, wherein when the rotation angle of the slat body when no gap is formed between adjacent slat bodies is 0 degrees, the longitudinal length of the gear accommodating groove is formed so that the slat body can rotate to an angle exceeding 90 degrees.

[0043] <Aspect 4> The opening device according to any one of aspects 1 to 3, wherein the interlocking bar member has a recess that prevents interference between the plurality of slats and the sliding member when the slats are in a fully closed state.

[0044] <Aspect 5> An opening device described in any of aspects 1 to 4, wherein the interlocking bar member is movable between a retracted position in which it is retracted from the gears of the multiple slats in a fully open state, and an interlocking position in which the gears of the multiple slats in a fully closed state mesh with the tooth portions. [Explanation of symbols]

[0045] 1 Opening device, 2 Upper guide rail, 3 Lower guide rail, 5 Slat, 51 Upper support member, 52 Lower support member, 53 Slat body, 531 Rotating shaft, 54 Hanging wheel (sliding member), 55 Guide pin (sliding member), 56 Gear, 6 Interlocking bar member, 61 Gear accommodating groove, 613 Tooth portion, 62 Recess, 100 Opening

Claims

1. A guide rail attached to an opening in a building; a plurality of slats that have sliding members that engage with the guide rails, are provided so as to be movable along the guide rails, and are connected in a bellows-like manner along the movement direction; An opening device configured to fully close the opening by unfolding the plurality of slats along the guide rail, and to fully open the opening by folding the plurality of slats, The apparatus further includes an interlocking bar member that is movably provided along the extending direction of the guide rail, The plurality of slats are A slat body, a support member that rotatably supports the slat body; a gear protruding from the support member and connected to a rotation shaft of the slat body, The support members of adjacent slats are rotatably connected to each other in a bellows-like manner, the interlocking bar member has teeth that mesh with the gears of the plurality of slats in a fully closed state, An opening device in which the rotation angles of the slat bodies of the multiple slats in the fully closed state are adjusted in conjunction with each other by moving the interlocking bar member along the extension direction of the guide rail while the gear is engaged with the tooth portion.

2. the interlocking bar member has a plurality of gear accommodating grooves capable of accommodating the gears of the plurality of slats, respectively; The plurality of gear accommodating grooves are formed elongated along the movement direction of the interlocking bar member, The opening device according to claim 1 , wherein the teeth are formed on an inner surface of the gear receiving groove along a longitudinal direction of the gear receiving groove.

3. 3. The opening device according to claim 2, wherein when the rotation angle of the slat body when no gap is formed between adjacent slat bodies is 0 degrees, the longitudinal length of the gear accommodating groove is formed so that the slat body can rotate to an angle exceeding 90 degrees.

4. The opening device according to any one of claims 1 to 3, wherein the interlocking bar member has a recess that avoids interference with the sliding member in the plurality of slats in a fully closed state.

5. The interlocking bar member is movable between a retracted position in which it is retracted from the gears of the plurality of slats in a fully open state and an interlocking position in which the gears of the plurality of slats in a fully closed state mesh with the tooth portions, an opening device as described in any one of claims 1 to 3.

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