JP4258070B2 - Blind device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a blind device that is arranged on a window or the like of a building and blinds these windows or the like as necessary.
[0002]
[Problems to be solved by the invention]
This kind of blind device usually arranges a blind consisting of a large number of slats juxtaposed in the vertical direction, and lowers the blind from above by the operation of the lifting device, thereby concealing the opening such as the window of the building, The blind is raised by the reverse operation of the lifting device to open the opening.
[0003]
In such a blind device, as described above, when the opening portion is opened, a large number of slats constituting the blind are usually disposed in close proximity to each other above the opening portion. Since the polymerized slats partially close the opening, the opening cannot be fully opened when the opening is fully opened, which is annoying. In order to eliminate this, even if the slat accommodation frame is provided on the upper side, an occupied space corresponding to the slat accommodation frame is required on the upper side, which may be difficult in a general house or the like and is not always satisfactory. In addition, in the case where it is desired to blindfold only below the opening, there is a problem that it cannot be done with the conventional blind device, and furthermore, cleaning of the slats must use a ladder, a stand, etc. There is also a risk that an object or a person may be caught by the lowering of the blind in the closing operation.
[0004]
Therefore, a blind device as described in JP-A-8-210049 has been proposed, and according to the proposed blind device, the above-mentioned various problems can be preferably solved, and this point can be satisfied. In the blind device described in the gazette, it is difficult to bring the blind into an open state with one behavior in an emergency or the like. Etc. need to be destroyed.
[0005]
The present invention has been made in view of the above-mentioned points, and the object of the present invention is to take advantage of the advantages of the blind device as described in JP-A-8-210049 and to perform a behavior in an emergency. It is an object of the present invention to provide a blind device capable of bringing the blind into an open state.
[0006]
[Means for Solving the Problems]
The blind device according to the first aspect of the present invention supports a blind composed of a large number of slats juxtaposed in a vertical direction between a pair of vertical frames, and ends of the slats, and is arranged in the vertical frame. In order to tilt each of the slats via the link mechanism, the link lifting mechanism that lifts the upper end of the link mechanism whose lower end is connected to the vertical frame, and the blind is located at the opening closed position. A tilt mechanism connected to the link mechanism, and an emergency release mechanism that releases the lifting of the upper end of the link mechanism by the link lifting mechanism and lowers the slat by its own weight in an emergency, and places the blind at the opening opening position. It has.
[0007]
According to the blind device of the first aspect, since the emergency opening mechanism is provided, it is possible to bring the blind into an open state in an emergency, and the emergency opening mechanism is provided at the upper end of the link mechanism by the link lifting mechanism. Since the lifting is released and the slat is lowered by its own weight, power is not particularly required, and emergency opening can be performed without any problem even in an abnormal situation such as a power failure.
[0008]
In the blind device according to the second aspect of the present invention, in the blind device according to the first aspect, the link lifting mechanism includes a flexible elongated body having one end connected to the upper end of the link mechanism via a tilt mechanism, The other end of the elongate body is connected, and includes a rotating body that winds and feeds out the elongate body by rotation, and a rotation driving device that rotates the rotating body. A worm wheel coupled to the worm wheel, and a worm shaft that meshes with the worm wheel. The emergency release mechanism retains the engagement between the worm wheel and the worm shaft when the wake wheel is not operated, and the rotator is operated during the operation. The worm shaft can be moved in the axial direction so that the mesh between the worm wheel and the worm shaft can be released by rotating the worm wheel.
[0009]
According to the blind device of the second aspect, the emergency opening mechanism enables the worm shaft to move in the axial direction, and the opening of the opening portion by the blind is opened through a change in the meshing state between the worm wheel and the worm shaft. Therefore, it is easy to return after emergency opening.
[0010]
In the blind device according to the third aspect of the present invention, in the blind device according to the second aspect, the emergency opening mechanism has a rotatable lever member, and the lever member is formed integrally with the worm shaft. The bifurcated portion engages with the buttocks and prohibits the movement of the worm shaft at the first rotation position of the lever member. The engagement with the worm wheel is maintained, and at the second rotation position of the lever member, the engagement with the collar is released, allowing the worm shaft to move directly and the engagement between the worm wheel and the worm shaft. It can be canceled.
[0011]
According to the blind device of the third aspect, since the emergency release mechanism has a rotatable lever member, it is possible to bring the blind into an open state by operating the lever member. Can achieve a quick emergency opening.
[0012]
In the blind device according to the fourth aspect of the present invention, in the blind device according to the second or third aspect, the rotation drive device includes a handle mechanism capable of manually rotating the worm shaft, and the handle mechanism is A rotating rod connected to one end of the shaft via a universal joint, and a handle member attached to the rotating rod are provided.
[0013]
In the present invention, as in the blind device of the fourth aspect, the worm shaft may be manually rotated to place the blind at the opening closed position. And the worm shaft is automatically rotated by the operation of the electric motor or the like, and the blind may be arranged at the opening closed position.
[0014]
In the blind device according to the fifth aspect of the present invention, in the blind device according to any one of the first to fourth aspects, the lower end of the link mechanism is connected to the vertical frame via an elastic mechanism.
[0015]
According to the blind device of the fifth aspect, since the lower end of the link mechanism is pulled downward by the elastic mechanism, a downward force can be applied to the slat in addition to its own weight. Opening can occur reliably and quickly.
[0016]
In the present invention, belts, wire ropes, chains, strings, etc. can be shown as preferred examples of the flexible long body, and the belt, wire rope or the flexible long body can be used as the rotating body. When strings are used, pulleys that are wound and engaged are preferably used, and when a chain is used as the elongated body, a sprocket wheel that engages and engages with the chain is preferably used.
[0017]
The invention will now be described in more detail with reference to preferred examples of preferred embodiments shown in the figures. The present invention is not limited to these examples.
[0018]
Embodiment
1 to 11, the blind device 1 of this example includes a blind 5 composed of a large number of slats 4 juxtaposed in a vertical direction between a pair of vertical frames 2 and 3, and respective end portions 6 of the slats 4. Stretchable link mechanisms 7 and 8 disposed on the vertical frames 2 and 3 and upper ends of the link mechanisms 7 and 8 whose lower ends are connected to the vertical frames 2 and 3 via elastic mechanisms 9 and 10. In order to tilt each of the slats 4 via the link mechanisms 7 and 8 at a given intermediate position of the opening of the blind 5, and a link lifting mechanism 11 that places the blind 5 in the opening closed position. In the event of an emergency, the tilt mechanisms 12 and 13 connected to the link mechanisms 7 and 8 and the lifting of the upper ends of the link mechanisms 7 and 8 by the link lifting mechanism 11 are released, and the slat 4 is lowered by its own weight. It is provided with an emergency opening mechanism 14 placing the India 5 into the opening open position.
[0019]
The vertical frame 2, the vertical frame 3, the link mechanism 7, the link mechanism 8, the elastic mechanism 9, the elastic mechanism 10, and the tilt mechanisms 12 and 13 are configured in the same manner. The frame 2 side will be described, and the vertical frame 3 side will be described as necessary.
[0020]
The vertical frames 2 and 3 are bridged by an upper frame 15 to form an opening 16 that is opened and closed by a blind 5. The vertical frame 2 has a slit 17 extending in the vertical direction, and is formed integrally with the vertical frame body 18 by forming a vertical frame body 18 in which the link mechanism 7 is accommodated and a roller guide path 19 therein. A pair of guide walls 20 and a cam wall 21 for the tilt mechanism 12 and formed integrally with the vertical frame body 18 are provided.
[0021]
Each of the slats 4 includes a large hook-shaped portion 22 exposed to the outside when the opening 16 is closed, and a small hook-shaped portion 23 that is superposed on the lower end side of the large hook-shaped portion 22 when the opening 16 is closed. The seal 24 is fitted to one end of the large bowl-shaped portion 22.
[0022]
The link mechanism 7 includes a first link row 27 in which a large number of link members 25 are connected to each other in series via shaft pins 26 and a plurality of link members 28 in the same manner as the link rows 27. The second link row 30 is connected to the link row 27 in parallel with each other through the link row 27, and the other end is connected to the link row 27 via every other shaft pin 26. Each of the end portions 6 of the slat 4 is provided with a third link row 32 composed of a number of lateral link members 31 rotatably connected to the link row 30 via every other shaft pin 29. Are fixedly coupled to the link member 31 of the link row 32 by a fixture 33 passing through the slit 17. In addition, in order to define the folding direction of the link rows 27 and 30, the blocking members 34 are integrally provided on the link members 25 and 28.
[0023]
In this example, the lower end 41 of the lowermost link member 28 that is the lower end of the link row 30 is a free end, and the lower end 442 of the lowermost link member 25 that is the lower end of the link row 27 is the elastic mechanism 43. It is connected to the vertical frame 2 via.
[0024]
The elastic mechanism 43 includes a bracket 51 fixed to the lower end of the vertical frame 2, a guide rod 52 attached to the bracket 51, a movable body 53 mounted on the guide rod 52 so as to be movable in the vertical direction, and a movable body 53. Is provided between the upper end of the bracket 51 and the upper surface of the movable body 53 so as to elastically bias the lower end of the link member 25. 42 is rotatably connected to the movable body 53 via the shaft pin 55, and thus the lower end 42 of the link member 25 is connected to the vertical frame 2 via the elastic mechanism 43.
[0025]
The link lifting mechanism 11 is fixed to the upper ends of the vertical frames 2 and 3, and the turning pulleys 56 and 57 are rotatably supported by the brackets 61 and 62 covered by the upper frame 15 via shafts 58 and 59, respectively. Similarly, pulleys 63 and 64 as rotating bodies disposed on the brackets 61 and 62 are wound around and engaged with the pulleys 63 and 64, and are wound around the turning pulleys 56 and 57, so that the feeding ends 65 and 66 are the pieces. Metallic belts 69 and 70 as flexible long bodies attached to 67 and 68, rollers 71 and 68, and rollers 71 arranged on the roller guide path 19 (the vertical frame 3 side is not shown). To 74 are rotatably mounted, and a rotation driving device 77 that rotates the pulleys 63 and 64 is provided.
[0026]
The rotary drive device 77 is rotatably supported at the end portions of the brackets 61 and 62, and is arranged between the upper ends of the vertical frames 2 and 3, and a rotary shaft 81 to which pulleys 63 and 64 are fixed, The housing 80 has a worm wheel 78 fixed to the rotating shaft 81 and connected to the pulleys 63 and 64 via the rotating shaft 81, and a worm 79 meshing with the worm wheel 78. The worm shaft 83 is supported by the housing 80 so as to be rotatable and vertically movable, and the handle mechanism 84 is capable of manually rotating the worm shaft 83.
[0027]
The housing 80 through which the rotation shaft 81 is rotatably passed is attached to the bracket 61. In the middle of the housing 80, the lower end of the worm 79 of the worm shaft 83 comes into contact with the lower end of the worm shaft 83. An intermediate wall 85 that prevents the lowering of a certain level or more is provided, and the worm shaft 83 extends through the upper wall 86, the intermediate wall 85, and the lower wall 87 of the housing 80 in the vertical direction, that is, in the vertical direction. The shaft portion 111 of the worm shaft 83 is integrally formed with a flange portion 112 located in the space 89 in the housing 80.
[0028]
The handle mechanism 84 includes a rotating rod 122 connected to the lower end of the shaft portion 111 of the worm shaft 83 via a universal joint 121, and a handle member 123 attached to the rotating rod 122. The rotating rod 122 extends downward so that the handle member 123 can be manually operated from the indoor side.
[0029]
The rotation drive device 77 rotates the worm shaft 83 via the universal joint 121 by manually rotating the rotary rod 122 around its axis through the handle member 123 when the emergency release mechanism 14 is not operated. The rotation of the worm shaft 83 causes the worm wheel 78 engaged with the worm 79 to rotate, and thus the pulleys 63 and 64 are rotated via the rotation shaft 81.
[0030]
The tilt mechanism 12 includes a tilt arm 91 rotatably attached to the moving base 73 via a shaft 90, and a cam mechanism 92 that sets the rotation state of the tilt arm 91. One end of each of the upper end link members 25 and 28 is rotatably connected to both ends via shaft pins 93 and 94, and thus the feeding end 65 of the belt 69 is connected to the movable base 75 and the tilt arm of the tilt mechanism 12. It is connected to the link member 25 via 91 (the same applies to the feeding end 66 of the belt 70). The cam mechanism 92 includes a cam roller 95 that is rotatably attached to the tilt arm 91, the cam wall 21 that forms the vertical cam surface 96 with which the cam roller 95 abuts, and a horizontal cam surface 97 that is continuous with the vertical cam surface 96. The cam block 98 attached to the upper end of the cam wall 21 is fixed to the inner surface of the vertical frame main body 18 above the cam block 98, and the cam block 99 holds the tilted state of the slat 4 in the vertical direction. It is equipped with.
[0031]
The emergency release mechanism 14 includes a rotatable lever member 131, and the lever member 131 includes a bifurcated portion 133 that can be engaged with a collar portion 112 formed integrally with the shaft portion 111 of the worm shaft 83. , And a lever portion 134 integrally formed with the bifurcated portion 133, and is supported at the lower portion of the bifurcated portion 133 via the pin shaft 135 so as to be rotatable in the R direction.
[0032]
The bifurcated portion 133 engages with the flange portion 112 and prohibits the worm shaft 83 from moving downward (in the H direction) at the first rotational position in the R direction of the lever member 131 (the rotational position shown in FIG. 8). Thus, the engagement between the worm wheel 78 and the worm 79 of the worm shaft 83 is maintained, and the lever member 131 is engaged with the flange 112 at the second rotation position in the R direction (the rotation position shown in FIG. 10). Is released, enabling the worm shaft 83 to move downward (in the H direction). When the worm shaft 83 can be linearly moved downward, the pulleys 63 and 64 are rotated in the A direction by the rotational moment applied to the pulleys 63 and 64 due to the dead weight of the slat 4 via the belts 69 and 70. As a result, the worm wheel The meshing between 78 and the worm 79 of the worm shaft 83 is released.
[0033]
When the emergency release mechanism 14 is not operated (in the state shown in FIG. 8), the engagement between the worm wheel 78 and the worm 79 of the worm shaft 83 is maintained, and thus the intention of the pulleys 63 and 64 is maintained. The rotation of the pulley 63 and 64 in the A direction is prohibited during the operation (in the state shown in FIG. 10) of the rotation of the lever member 131 in the R direction by manual operation of the rotation lever portion 134. The worm shaft 83 can be moved in the axial direction so that the engagement between the worm wheel 78 and the worm 79 of the worm shaft 83 can be released by rotation, and thus the pulleys 63 and 64 can be freely rotated in the A direction so that the slat 4 The belts 69 and 70 can be fed out by their own weight.
[0034]
As shown in FIG. 7, the above blind device 1 is arranged on the building window 161 such that the emergency opening mechanism 14 faces the room 160. In the blind device 1, when the opening 16 is opened, the link rows 27 and 30 are folded, and each of the slats 4 is closely polymerized (bundled) below the opening 16. When closing the opening 16, first, the rotation of the rotary rod 122 by manual operation of the handle 123 causes the pulleys 63 and 64 to be opposite to the A direction via the universal joint 121, the worm shaft 83, the worm wheel 78, and the rotation shaft 81. Thus, the belts 69 and 70 are wound around the pulleys 63 and 64, and the moving bases 75 and 76 are guided to the roller guide path 19 through the rollers 71 to 74 and are raised. As shown in FIG. 5 (a), the link rows 27 and 30 are also extended from the upper end side of the movable bases 75 and 76, and the horizontal link member 31 of the link row 32 is also lifted upward from the upper side. As a result, each of the slats 4 fixed to the lateral link member 31 is sequentially lifted in the closing direction of the opening 16. As shown in FIGS. 5A and 5B, when the cam roller 95 is in contact with the vertical cam surface 96, the slat 4 is held in a substantially horizontal tilt state. 91, link rows 27, 30 and 32 are formed.
[0035]
As shown in FIG. 6 (a), the link rows 27 and 30 are further extended by the belts 69 and 70 being wound around the pulleys 63 and 64, so that the blind part 5 is closed in the middle of the opening, in this example, the opening. When the cam roller 95 shifts from abutment to the vertical cam surface 96 to abutment to the horizontal cam surface 97 at a position immediately before the complete closure of the link 16, the link row 30 is further lifted with respect to the link row 27. As a result, the slats 4 are rotated counterclockwise and sequentially set in a vertically tilted state. Further, when the tilt arm 91 is lifted, as shown in FIG. 6B, almost the entire length of the link rows 27 and 30 is extended, and when the cam roller 95 rides on the cam block 99, the slat 4 tilts in a substantially vertical direction. It is held in a state, and is completely closed by the blind 5 in a state where the opening 16 is completely blinded. Thereafter, the rotation of the rotating rod 122 by manual operation of the handle 123 is stopped, and the closing operation of the opening 16 by the blind 5 is completed. Even if the rotation stop of the rotary rod 122 due to manual operation of the handle 123 is slightly delayed and the lower end 42 of the link member 25 is pulled upward in the extended link row 27, the coil spring 54 elastically biases it downward. Since the movable body 53 thus moved moves upward, the lower end 42 of the link member 25 is not damaged even if the rotation of the rotating rod 122 is delayed. Conversely, full closing of the opening 16 by the blind 5 can be reliably achieved.
[0036]
When the opening 16 is opened by the blind 5, the rotating rod 122 is rotated reversely by the manual operation of the handle 123, as shown in FIGS. 6 (b), 6 (a), 5 (b) and 5 (a). In this order, the link trains 27 and 30 are operated.
[0037]
When the opening 16 is urgently opened in the partially closed state or the completely closed state of the opening 16 by the blind 5, the lever portion 134 is rotated in the R direction so that the collar portion 112 and the bifurcated portion 133 Release the engagement. This disengagement enables the worm shaft 83 to move in the axial direction, causing the pulleys 63 and 64 to rotate in the A direction due to the weight of the slat 4, thereby disengaging the worm wheel 78 and the worm shaft 83 from the worm 79. Thus, the worm wheel 78 can be freely rotated, that is, the pulleys 63 and 64 can be freely rotated via the rotation shaft 81, and the belts 69 and 70 are fed out by the weight of the slat 4 by the free rotation of the pulleys 63 and 64 in the A direction. The slats 4 are lowered, the partially closed state or the completely closed state of the opening 16 by the blind 5 is released, and the opening 16 is fully opened.
[0038]
As described above, since the blind device 1 includes the emergency opening mechanism 14, the blind 5 can be brought into an open state in an emergency, and the emergency opening mechanism 14 is linked to the link lifting mechanism 11. And the lifting of the upper ends of the slats 4 and the slats 4 are lowered by their own weight, so that power is not required and emergency opening can be made without any problem even during power outages. it can.
[0039]
In the blind device 1, the emergency opening mechanism 14 enables the worm shaft 83 to move in the axial direction (H direction), and the opening portion by the blind 5 is changed through a change in the meshing state between the worm wheel 78 and the worm shaft 83. Since the emergency opening of 16 is performed, the return after the emergency opening becomes easy.
[0040]
In addition, according to the blind device 1, since the emergency release mechanism 14 has the rotatable lever member 131, operating the lever member 131 can bring the blind 5 into an open state in one behavior. It becomes possible, and quick emergency opening can be achieved.
[0041]
Furthermore, according to the blind device 1, since the lower ends of the link mechanisms 7 and 8 are pulled downward by the elastic mechanisms 9 and 10, the slat 4 can be given an elastic lowering force in addition to its own weight. It is possible to reliably and quickly cause an emergency opening due to.
[0042]
Further, in the blind device 1, when the opening 16 is fully opened, the slats 4 are closely polymerized (bundled) with each other below the opening 16, and the polymerized slat 4 is placed on the lower surface of the upper frame 15. Because there is no, you can enjoy the original feeling of liberation. And only the upper part of the opening part 16 can also be open | released, and the feeling of release at the time of partial opening becomes favorable.
[0043]
In addition, in the closing operation of the blind 5, it is only necessary to lift the upper ends of the link rows 27 and 30, and the expansion and contraction mechanisms of the link rows 27 and 30 can be simply configured, and the lifting mechanism and the tilting mechanism are less likely to malfunction. Can do.
[0044]
In the blind device 1 described above, the rotation of the pulleys 63 and 64 in the A direction is caused mainly by the dead weight of the slat 4 in the emergency opening of the opening 16, but between the intermediate wall portion 85 and the flange portion 112. An elastic means such as a coil spring is disposed on the worm shaft 83 so that the worm shaft 83 is always elastically biased in the H direction. In an emergency opening of the opening 16, in addition to the weight of the slat 4, the elasticity of the elastic means The pulleys 63 and 64 may be rotated in the A direction by force.
[0045]
【The invention's effect】
According to the present invention, there is provided a blind device that can take advantage of the blind device as described in JP-A-8-210049 and can bring the blind to an open state in one action in an emergency. Can do.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of an example of a preferred embodiment of the present invention.
2 is a detailed front view of the example shown in FIG.
FIG. 3 is a detailed side view of the example shown in FIG. 1;
4 is a detailed explanatory diagram in a vertical frame of the example shown in FIG. 1. FIG.
FIG. 5 is an operation explanatory diagram of the example shown in FIG. 1;
6 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
7 is a schematic plan view when the example shown in FIG. 1 is applied to a window of a building. FIG.
FIG. 8 is a partially enlarged side view of the example shown in FIG. 1;
FIG. 9 is a partially enlarged back view of the example shown in FIG. 1;
10 is an operation explanatory diagram of the example shown in FIG. 1. FIG.
FIG. 11 is a partially enlarged perspective view of the example shown in FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Blind apparatus 2, 3 Vertical frame 4 Slat 5 Blind 7, 8 Link mechanism 11 Link lifting mechanism 12, 13 Tilt mechanism 14 Emergency release mechanism

Claims (4)

  A blind composed of a large number of slats juxtaposed in the vertical direction between a pair of vertical frames, supports each end of the slats, a telescopic link mechanism arranged in the vertical frame, and a lower end of the vertical frame A link lifting mechanism that lifts the upper end of the link mechanism that is connected to the door and places the blind in the closed position of the opening, a tilt mechanism that is connected to the link mechanism to tilt each of the slats via the link mechanism, and an emergency Sometimes, the link lifting mechanism has an emergency opening mechanism that releases the lifting of the upper end of the link mechanism, lowers the slat by its own weight, and places the blind at the opening opening position. A flexible long body connected to the upper end of the link mechanism via a tilt mechanism and the other end of the long body are connected, and the long body is wound up by rotation. A rotating body that feeds out, and a rotation driving device that rotates the rotating body, and the rotation driving device includes a worm wheel coupled to the rotating body and a worm shaft that meshes with the worm wheel, The emergency release mechanism maintains the mesh between the worm wheel and the worm shaft when it is not in operation, and when it is in operation, the rotation of the rotating body releases the mesh between the worm wheel and the worm shaft in the axial direction of the worm shaft. Blind device designed to allow movement.   The emergency release mechanism has a rotatable lever member, and the lever member has a bifurcated portion that can be engaged with a collar portion formed integrally with the worm shaft, and the bifurcated portion is a lever. At the first rotation position of the member, the engagement of the worm shaft is prohibited by engaging with the collar portion, the meshing between the worm wheel and the worm shaft is held, and at the second rotation position of the lever member, 2. The blind device according to claim 1, wherein the engagement with the portion is released, the worm shaft is allowed to move directly, and the engagement between the worm wheel and the worm shaft can be released.   The rotational drive device includes a handle mechanism that can manually rotate the worm shaft, and the handle mechanism includes a rotary rod connected to one end of the worm shaft via a universal joint, and a handle member attached to the rotary rod. The blind device according to claim 1, further comprising:   The blind device according to any one of claims 1 to 3, wherein a lower end of the link mechanism is connected to the vertical frame via an elastic mechanism.

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