JP5354031B2 - Blind device - Google Patents

Abstract

A shade device (1) is provided with a connection stop mechanism (65) whereby one end (61) of a chain (63) that is made to travel by a travel mechanism (64) is elastically stopped from traveling downward beyond a predetermined position. A pin (102) having a large head (101) is formed in a travel member (91) of the connection stop mechanism (65). An elongated hole (125) fitted over the pin (102) is formed in a rotating arm member (95) of the connection stop mechanism (65) in order that the rotating member (95) will be connected to the travel member (91) rotatably and rectilinearly movably. A large hole (127) into or from which the large head (101) of the pin (102) can be inserted or removed, respectively, is formed in that end (126) of the elongated hole (125) which is located near a second end (94) of the rotating arm member (95).

Description

  The present invention relates to a blind device that is disposed in an opening such as a window of a building and used to open and close the opening.

  For example, in Patent Document 1, a first link mechanism, a second link mechanism juxtaposed to the first link mechanism, one end is a first link mechanism, and the other end is a second link mechanism. A plurality of slat support mechanisms that are rotatably connected to each other, slats supported by each of the slat support mechanisms, and upper ends of the first and second link mechanisms, respectively, A relative position change is generated in the second link mechanism, and a tilt mechanism for tilting the slats and a lower part of the first and second link mechanisms are connected to fold the first and second link mechanisms, The link folding / extension mechanism to be extended and the link folding / extension mechanism to operate the tilt mechanism when the first and second link mechanisms are extended by the link folding / extension mechanism. The link folding and extending mechanism is a flexible long body, a bending preventing means for preventing the long body from bending, and a traveling device for running the long body. And a connecting means for connecting the long body to the lower portions of the first and second link mechanisms, and one end of the connecting means is formed between the lower portions of the first and second link mechanisms and the long body. A rotary arm that is pivotably and linearly connected to one of them, and whose other end is pivotally connected to either the lower part of the first and second link mechanisms or the long body. A blind device comprising a member (arm) is described.

JP-A-8-326445

  By the way, in such a blind device, from the viewpoint of manufacturing and assembling the device, one end is connected to one of the lower part of the first and second link mechanisms and the long body so as to be rotatable and linearly movable. The other end of the first and second link mechanisms and the elongated body can be easily released from and connected to the rotating arm member that is rotatably connected to either one of the long body and the long body. It is desirable to be able to

  The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a blind device that can easily connect and release a rotating arm member and can easily manufacture and assemble the device. There is.

  The blind device of the present invention includes a frame body arranged in an opening of a building such as a window, a plurality of blades juxtaposed to each other in an opening surrounded by the frame body, and the uppermost of the plurality of blades A suspension mechanism that suspends the blades, a link mechanism that interconnects and folds the plurality of blades, and a plurality of blades that are raised from the lowest blade of the plurality of blades and lowered. An elevating mechanism for elevating and lowering the blades of the elongate blades, the elevating mechanism comprising a flexible long body held in an inflexible state, a traveling mechanism for running the flexible long body, and a long body One end of the elongate body is connected to the lowest blade, and a connection stop mechanism that elastically stops the traveling of the elongate body below the predetermined position beyond the predetermined position by the travel mechanism, , So that it travels up and down by running a long body At one end, a traveling member connected to one end of the long body, a movable body movable in the vertical direction connected to the lowest blade, and one rotation that allows the traveling member to descend with respect to the movable body are generated. A rotating arm member that is rotatably and linearly connected to the traveling member and is also rotatably connected to the movable body at the other end, and a rotating arm member for stopping the lowering of the traveling member with respect to the movable body. An elastic urging member that urges the rotation arm member against the other rotational force that resists one rotation, and a pin having a huge head is formed on the traveling member; The rotating arm member is formed with a long hole fitted to the pin so as to connect the rotating arm member to the traveling member so as to be rotatable and linearly movable, and is located on the other end side of the rotating arm member. At the end of the long hole, Large head is large holes capable insertion is formed.

  According to the blind device of the present invention, in particular, the traveling member is formed with a pin having an enormous head, and the rotating arm member is rotatable and linearly movable with respect to the traveling member. A long hole fitted to the pin is formed to be connected to the pin, and a large hole portion into which the huge head portion of the pin can be inserted and removed is formed at the end of the long hole located on the other end side of the rotary arm member. Since it is formed, the rotary arm member can be easily connected and disconnected, and the manufacture and assembly of the apparatus can be facilitated.

  In the blind device of the present invention, the rotating arm member moves the long hole within the range where the pin of the traveling member does not reach the enormous hole portion from one end side to the other end side of the rotating arm member in one rotation thereof. It may be arranged to do. According to such a blind device, when the traveling member is displaced in the vertical direction with respect to the movable body based on the traveling of the long body made of a chain or the like, it is possible to eliminate the possibility that the pin falls out from the enormous hole portion, When the traveling member and the movable body are taken out from the blind device, the rotating arm member can be easily connected to and disconnected from the traveling member by inserting and removing the enormous head portion of the pin from the enormous hole portion of the long hole.

  The blind device of the present invention includes a tilt mechanism that tilts the plurality of blades when the plurality of blades are moved up and down by the lifting mechanism, and the movable body is supported by the frame body so as to be movable in the vertical direction. A linearly movable member having the other end of the rotary arm member rotatably connected thereto, and a swingable member connected to the lowest blade and swingably connected to the linearly movable member. You may do it.

  In the blind device of the present invention, the movable body is connected to the linearly movable member at one end and to the swingable member at the other end, and resists one rotational force generated by tilting of the plurality of blades. An elastic body that biases the other elastic rotational force to the swingable member may be provided.

  According to the present invention, it is possible to provide a blind device in which the rotating arm member can be easily connected and disconnected to facilitate maintenance and inspection of the device.

FIG. 1 is an explanatory perspective view of an example of an embodiment of the present invention. FIG. 2 is a partial perspective explanatory view of the example shown in FIG. FIG. 3 is a partial side view of FIG. FIG. 4 is a partially cutaway side view of the example shown in FIG. FIG. 5 is an enlarged side view of a part of the side shown in FIG. FIG. 6 is a partial longitudinal sectional view of the example shown in FIG. FIG. 7 is an enlarged side view of a part of the example shown in FIG. 1 excluding the inner side wall and the blade body. FIG. 8 is an exploded perspective view of the connection stopping mechanism shown in FIG. FIG. 9 is an enlarged explanatory view of a part of the side surface shown in FIG. FIG. 10 is a diagram for explaining a part of the operation shown in FIG. FIG. 11 is an enlarged explanatory view of a part of the side surface shown in FIG. FIG. 12 is a diagram for explaining a part of the operation shown in FIG. FIG. 13 is a partial explanatory view of the connection stopping mechanism shown in FIG. FIG. 14 is an explanatory diagram of the suspension mechanism and the tilt mechanism of the example shown in FIG. FIG. 15 is an explanatory diagram of the tilt mechanism of the example shown in FIG. FIG. 16 is an explanatory diagram of the lifting mechanism of the example shown in FIG. FIG. 17 is an explanatory front view of the lifting mechanism shown in FIG. FIG. 18 is an explanatory plan view of the lifting mechanism shown in FIG. FIG. 19 is an explanatory side view of a sprocket wheel and the like of the lifting mechanism shown in FIG. FIG. 20 is an explanatory diagram of the operation of the tilt mechanism shown in FIG. FIG. 21 is a diagram for explaining the operation of the tilt mechanism shown in FIG. FIG. 22 is an operation explanatory diagram of the lifting mechanism of the example shown in FIG. FIG. 23 is an operation explanatory diagram of the lifting mechanism of the example shown in FIG.

  Next, embodiments of the present invention will be described in more detail based on preferred examples shown in the drawings. The present invention is not limited to these examples.

  1 to 23, the blind device 1 of this example includes a frame 3 arranged in an opening of a building such as a window and a plurality of juxtaposed in the vertical direction in an opening 2 surrounded by the frame 3. The blade 4, the suspension mechanism 5 that suspends the uppermost blade 4 among the plurality of blades 4, the link mechanism 6 that interconnects the plurality of blades 4, and the lowest blade among the plurality of blades 4 4 and the lowermost blade 4 is moved down and the plurality of blades 4 are moved up and down, and the tilt mechanism 8 that tilts the plurality of blades 4 when the plurality of blades 4 are moved up and down by the lifting mechanism 7. It is equipped with.

  The frame 3 includes a vertical frame 11 and a vertical frame 12 juxtaposed with each other, and an upper frame 13 arranged by bridging the upper portions of the vertical frame 11 and the vertical frame 12.

  The vertical frame 11 formed in the same manner as the vertical frame 12 bridges the outer side wall part 15, the inner side wall part 16 arranged facing the outer side wall part 15, and the outer side wall part 15 and the inner side wall part 16. In addition, the front wall portion 17 and the rear wall portion 18 that are disposed so as to face each other are integrally formed, and the outer side wall portion 15 is integrally formed with the side wall plate portion 19 and the side wall plate portion 19. In addition, holding wall portions 23 and 24 defining a pair of holding grooves extending in the vertical direction are provided, and the inner side wall portion 16 includes a slit 25 extending in the vertical direction.

  Each of the blades 4 includes, for example, as shown in FIGS. 1 to 6, a blade body 31 and a fixture 33 for attaching one end 32 in the longitudinal direction of the blade body 31 to the link mechanism 6. Each fixture 33 is fixed to the end 32 of the corresponding blade body 31 at one end via a stopper 34 and protrudes into the vertical frame 11 through the slit 25 at the other end.

  For example, as shown in FIGS. 7 and 14, the suspension mechanism 5 includes a suspension plate 38 fixed to the swingable member 37 at the upper portion of the vertical frame 11, and one arm portion 39 of the suspension plate 38 at one end. A flexible string-like body 41 such as a wire, a rope, a band, etc., which is connected to the front end of the first link and connected to one end 40 of the uppermost link mechanism 6 at the other end, and a suspension plate 38 at one end. A flexible string-like body 44 such as a wire, a rope, and a band connected to the other end portion 43 of the uppermost link mechanism 6 is connected to the distal end portion of the other arm portion 42. ing.

  As shown in FIGS. 4 to 7, for example, the link mechanism 6 includes a plurality of leading edge link members 51 that are rotatably connected to each other via a shaft member 50 and are foldable, and a shaft member 52. A plurality of rear edge link members 53 that are rotatably connected to each other and are foldable, the uppermost front edge link member 51 and the upper end of the rear edge link member 53, and the lowermost front edge link member 51 and the rear The uppermost and lowermost transverse members 55 are rotatably connected to the lower ends of the edge link members 53 via the shaft members 54, respectively, and every other one on the front edge link member 51 side and the rear edge link member 53 side. Each of a lateral member 55 rotatably connected to the shaft members 50 and 52, and a plurality of front edge link members 51 and rear edge link members 53 that are rotatably connected to each other via the shaft members 50 and 52, respectively. Folding direction To determine, and a bent portion 56 which is integrally formed on each of every other front edge link members 51 and the rear edge link members 53 s.

  The other ends of the corresponding fittings 33 protruding into the vertical frame 11 through the slits 25 are fixed to substantially the center portions of the horizontal members 55, and become one end portion 40 of the link mechanism 6. The other end of the string-like body 41 is rotatably connected to the shaft member 54 at the upper end of the uppermost front edge link member 51, and the uppermost rear edge serving as the other end 43 of the link mechanism 6. The other end of the string-like body 44 is rotatably connected to the shaft member 54 at the upper end of the link member 53.

  The front edge link members 51 that are rotatably connected to each other by the shaft members 50 that are not connected to the horizontal members 55 are located on the rear wall when the lowermost front edge link member 51 rises. In the same manner, it is folded by being restricted by the bent portion 56 so as to be directed to the portion 18, and similarly, the lateral members 55 are rotatably connected to each other by the shaft members 52 that are not connected, and the trailing edges adjacent to each other The link member 53 is folded by being restricted by the bent portion 56 so that the shaft member 52 faces the front wall portion 17 when the lowermost rear edge link member 53 is raised, and the folded front edge link The members 51 and the trailing edge link members 53 are alternately positioned in the vertical direction.

  The elevating mechanism 7 has one end 61 and the other end 62, and a chain 63 having a length as a flexible long body that is held in an inflexible state, and travel that causes the chain 63 to travel in the A and B directions. A mechanism 64 and a connection stop mechanism 65 that connects one end 61 of the chain 63 to the lowest blade 4 and elastically stops the traveling mechanism 64 from traveling downward beyond a predetermined position of the one end 61 of the chain 63; It has.

  For example, as shown in FIGS. 16 to 19, the traveling mechanism 64 includes an electric motor 72 attached to the gear box 71, a spur gear 73 and a helical gear 74 arranged in the gear box 71, and a helical gear. A helical gear 75 meshed with the gear 74 and disposed in the gear box 71, and a helical gear 75 are attached, and the gear box 71 is rotatably supported by the gear box 71 via a bearing 76. In order to decelerate and transmit the rotation of the output rotation shaft of the electric motor 72 to the spur gear 73, the sprocket wheel 78 fixed to one end of the rotation shaft 77 on the vertical frame 11 side of the rotation shaft 77, A reduction gear (not shown) fixed to the output rotation shaft of the electric motor 72 and disposed in the gear box 71 is provided.

  The gear box 71 is attached to the upper end of the vertical frame 11, and the spur gear 73 and the helical gear 74 are fixed to a shaft member 82 that is rotatably supported by the gear box 71 via a bearing 81. The helical gear 75 is attached to the rotary shaft 77 through a spline 83 formed on the rotary shaft 77 so as to be movable in the axial direction. The helical gear 75 that rotates with the rotation of the rotary shaft 77 is The helical gear 84 disposed between the helical gear 75 and one bearing 76 is elastically biased toward the other bearing 76, and the chain 63 is wound around the sprocket wheel 78. It has been.

  The travel mechanism 64 rotates the sprocket wheel 78 through the spur gear 73, the helical gears 74 and 75 and the rotation shaft 77 by the rotation of the output rotation shaft by the operation of the electric motor 72, and the chain by the rotation of the sprocket wheel 78. 63 is made to run in the A direction or the B direction.

  The chain 63 is partially disposed in the holding groove 21 so as to be movable in the A direction and the B direction on the one end 61 side, and is partially movable in the A direction and the B direction on the holding groove 22 on the other end 62 side. It is arranged and moved in the A direction and the B direction in the holding passage 87 between the holding plate 86 supported by the vertical frame 11 via the support plate 85 and the sprocket wheel 78 at the portion wound around the sprocket wheel 78. The holding groove portions 21 and 22 and the holding wall portions 23 and 24 that form the holding passage 87 and the holding plate 86 prevent the chain 63 from being bent. The holding walls 23 and 24 and the holding plate 86 are held in an inflexible state.

  In the travel mechanism 64, for example, the lowest blade 4 collides with a foreign object during the lowering of the lowest blade 4 due to traveling in the A direction of the chain 63, for example, collides with a person or the like, so that the lowest blade 4 cannot be lowered. When the rotation of the helical gear 75 is stopped via the chain 63, the helical gear 75 is guided by the spline 83 by the helical gear 74 that is rotated by the operation of the electric motor 72 and is axially moved. The coil spring 84 is moved against the elastic force of the coil spring 84.

  For example, as shown in FIGS. 4 to 6 and FIGS. 8 to 13, the connection stop mechanism 65 includes a traveling member 91 coupled to one end 61 of the chain 63 so as to travel in the vertical direction by traveling of the chain 63, A movable body 92 that is connected to the lowermost blade 4 and that is movable in the vertical direction, and that rotates in the R1 direction that allows the traveling member 91 to descend with respect to the movable body 92, is rotatable at one end 93 to the traveling member 91. The rotary arm member 95 is connected to the movable body 92 at the other end 94 and is connected to the movable body 92 at the other end 94, and R1 of the rotary arm member 95 is used to stop the lowering of the traveling member with respect to the movable body 92. And a torsion spring 96 as an elastic urging member for urging the rotating arm member 95 with an elastic rotational force in the R2 direction that resists rotation in the direction.

  The travel member 91 is fixed to the main body portion 100 and the main body portion 100 that is arranged in the holding groove 21 and fitted to the holding wall portion 23 so as to be movable in the A direction and the B direction like the chain 63. And a pin 102 having a huge head 101.

  The movable body 92 is supported by the frame body 3 so as to be linearly movable in the vertical direction and the linearly movable member 103 to which the other end 94 of the rotary arm member 95 is rotatably connected, and the lowest blade 4. A swingable member 105 connected via a lateral member 55 and connected to a linearly movable member 103 via a shaft member 104 so as to be swingable in the R3 direction and the R4 direction, and a linearly movable member at one end. 103 and a coil spring 106 as an elastic body connected to the swingable member 105 at the other end.

  The linearly movable member 103 includes a main body 111 disposed between the holding wall portions 23 and 24 and extending in the vertical direction, a rolling roller 112 attached to the upper portion of the main body 111 and in contact with the holding wall portion 24, A rolling roller 113 attached to the lower portion of the main body 111 and in contact with the side wall plate portion 19 is provided on the main body 111 between the rolling rollers 112 and 113, and the other end 94 of the rotary arm member 95 is freely rotatable. A pin 114 attached to the rotary arm member 95, a contact portion 115 formed on the main body 111 above the rotary arm member 95 so as to regulate rotation of the rotary arm member 95 in the R2 direction by a predetermined amount or more, and a main body A support 118 that is fixed to the lower portion of 111 via a screw 117 and supports the swingable member 105 so as to be swingable; and a rotation arm member 95 that rotates more than a predetermined amount in the R1 direction. And it comprises a contact portion 116 formed on the support 118 in the lower portion of the rotary arm member 95 so as to define by the abutment. The support 118 is provided with the shaft member 104 described above and a pin 119 disposed in a slit 121 described later.

  The swingable member 105 has an arc-shaped slit 121 in which the end portion of the pin 119 is disposed and is integrally formed with the main body portion 122 and the main body portion 122 to which the other end of the coil spring 106 is connected. And a folded portion 123 folded back.

  The swingable member 105 is swingably attached to the support 118 of the linearly movable member 103 in the main body 122 via the shaft member 104, and the lowermost front edge link member 51 at one end of the main body 122. Are connected to one end of the lowermost horizontal member 55 and the lowermost horizontal member 55 via a shaft member 54, and the lower end of the lowermost trailing edge link member 53 and the lowermost horizontal member are connected to one end of the folded portion 123. The other end of the member 55 is rotatably connected via a shaft member 54.

  The coil spring 106 rotates the swingable member 105 around the shaft member 104 fixed to the support 118 so that the swingable member 105 is moved to the initial swing position, that is, the blade 4 is as shown in FIG. The swingable member 105 is elastically pulled so as to be set at a position rotated in the R3 direction in the horizontal state without being rotated in the R4 direction in the vertical state, as shown in FIGS. The swinging (turning) of the swingable member 105 around the member 104 is guided by the movement of the pin 119 along the slit 121 and the swinging of the swingable member 105 ( The range of rotation is defined by both ends of the slit 121.

  The wide end 93 of the rotary arm member 95 is formed with a long hole 125 into which the pin 102 is rotatably fitted and linearly movable along the longitudinal direction of the rotary arm member 95. An enormous hole 127 into which the enormous head 101 of the pin 102 can be inserted and removed is formed at the end 126 of the long hole 125 located on the other end 94 side. The other end 94 of the rotary arm member 95 is connected to the pin 114 so as to be rotatable in the R1 direction and the R2 direction.

  The rotating arm member 95 has a long hole 125 within a range in which the pin 102 of the traveling member 91 does not reach the enormous hole portion 127 from the one end 93 side to the other end 94 side of the rotating arm member 95 in the rotation in the R1 direction. On the other hand, in the rotation in the R2 direction, the pin 102 of the traveling member 91 is disposed on the linearly movable member 103 so that the elongated hole 125 moves from the other end 94 side to the one end 93 side of the rotating arm member 95. Has been.

  The torsion spring 96 is wound around the pin 114, and is locked to the rotary arm member 95 at one end and to the linearly movable member 103 at the other end. Such a torsion spring 96 is arranged so as to bias an elastic rotational force in the R2 direction against the rotation of the rotating arm member 95 in the R1 direction.

  The connection stop mechanism 65 may include a stopper (not shown) attached to the frame body 3 so as to contact the lower portion of the linearly movable member 103 when the opening 2 is closed.

  In the connection stop mechanism 65, when the lowermost blade 4 collides with a foreign object due to the lowering of the lowermost blade 4 due to the traveling of the chain 63 in the A direction, for example, collides with a person or the like and the lowermost blade 4 cannot be lowered, The traveling member 91 is lowered with respect to the movable body 92, and the rotating arm member 95 rotates in the R1 direction against the elastic force of the torsion spring 96 from the position shown in FIG. 11 to the position shown in FIG. Therefore, the descent of the traveling member 91 relative to the movable body 92 is stopped by the elastic rotational force in the R2 direction of the torsion spring 96 that gradually increases. Therefore, the connection stopping mechanism 65 resists the elastic force of the torsion spring 96 due to the relative vertical displacement of the movable body 92 with respect to the traveling member 91 when an abnormality that prevents the lowermost blade 4 from descending occurs. The lower arm 4 is elastically prevented from descending by the rotation of the rotary arm member 95. The abutting portion 116 abuts against the rotating arm member 95 when the rotating arm member 95 rotates in the R1 direction by a predetermined amount or more, forcibly stops the rotation, and thus the traveling member. The descent of 91 with respect to the movable body 92 is forcibly stopped. As described above, the connection stop mechanism 65 of this example can be said to be a fail-safe mechanism because it has both a stop by an elastic force and a forced stop. Further, the connection stopping mechanism 65 has the opening 2 completely closed, and the operation of the chain 63 is not immediately stopped even though the stopper comes into contact with the lower part of the linearly movable member 103. In this case, the rotary arm member 95 is stopped while rotating in the same manner as described above. In other words, the rotary arm member 95 is rotatably and linearly movable at one end 61 of the chain 63 via the travel member 91. The connected rotary arm member 95 itself rotates around the pin 114 against the elastic force of the torsion spring 96 and moves directly with respect to the traveling member 91 so that the movable body 92 does not move further downward. Therefore, there is no inconvenience that the fully extended link mechanism 6 is further extended and the fully closed blades 4 are further moved. It may avoid damage to the root 4.

  In the state in which the connection stop mechanism 65 is disposed in the frame 3, the enormous head portion 101 of the pin 102 is not arranged in the enormous hole portion 127 of the long hole 125, so that the rotary arm member 95 travels. The member 91 is not accidentally dropped. Further, in the state where the traveling member 91 and the movable body 92 of the connection stopping mechanism 65 are taken out from the inside of the frame body 3, the mutual positions of the traveling member 91 and the movable body 92 can be freely changed. The part 101 can be easily inserted and removed from the enormous hole part 127 of the long hole 125.

  The connection stop mechanism 65 is also arranged in a limit switch 141 attached to the gear box 71 and in the control box 142, and stops power supply to the electric motor 72 by a switch operation signal from the limit switch 141. And a power supply stop electric circuit (not shown).

  The control box 142 is attached to the upper end portion of the vertical frame 11 via a bracket or the like, and the limit switch 141 has an operating piece 143 that is elastically supported, and the switch is operated by the displacement of the operating piece 143. A signal is emitted.

  The connection stop mechanism 65 is configured such that the lowermost blade 4 collides with a foreign object, for example, collides with a person or the like while the lowermost blade 4 is descending due to travel of the chain 63 in the A direction based on the operation of the electric motor 72. The blade 4 cannot be lowered, and the helical gear 75 stops rotating, and the helical gear 74 is guided to the spline 83 by the helical gear 74 and moved in the axial direction. In this movement, the helical gear 75 is moved. When the operating piece 143 of the limit switch 141 is pressed to displace the operating piece 143, the power supply to the electric motor 72 is stopped by the electric power supply stop electric circuit by the switch operating signal from the limit switch 141, and the electric motor 72 is operated. Thus, the travel of the chain 63 in the A direction is stopped, and the application of the downward force to the lowest blade 4 is stopped.

  The elevating mechanism 7 raises and lowers the lowest blade 4 among the plurality of blades 4 through the connecting mechanism 65 by the traveling of the chain 63 in the A direction or B direction by the traveling mechanism 64, and thus the plurality of blades 4. Is moved up and down in advance from the lowest blade 4.

  For example, as shown in FIG. 15, the tilt mechanism 8 is provided on the rotary shaft 77 via a bearing 151 so as to be swingable (rotatable) about the rotary shaft 77. And a swingable member 37 having a recess 152 and a protrusion 153, a protrusion 154 that is attached to the chain 63 and fits into the recess 152 when the chain 63 travels in the A direction, and a recess 155. At the same time, when the swing prohibition state shown in FIG. 14 is set, the recess 155 engages with the protrusion 153 to prohibit swinging (rotation) about the rotation shaft 77 of the swingable member 37. As shown in FIG. 20, when the protrusion 154 is fitted into the recess 152, the protrusion 154 is rotated to release the engagement of the recess 155 with the protrusion 153, and the swingable member 37 is allowed to swing. In the swing allowable state The latch member 156 to be constant, and the latch member 156 to set the latch member 156 to swing prohibited state and a resilient means 157 for resiliently biasing.

  The swingable member 37 is arranged concentrically with the sprocket wheel 78, and the latch member 156 having the claw portion 161 at one end is centered on the support plate 164 via the shaft member 163 at the other end 162. The support plate 164 is attached to the upper end of the vertical frame 11 between the swingable member 37 and the support plate 85, and the elastic means 157 is engaged with the support plate 164 at one end. The other end is locked to the latch member 156, and the central portion is formed of a torsion coil spring that is wound around the shaft member 163. The latch member 156 is rotated around the shaft member 163 so that the claw portion 161 is rotated. The latch member 156 is elastically biased so as to face the recess 152.

  The tilt mechanism 8 rotates the latch member 156 against the elastic force of the elastic means 157 by fitting the protrusion 154 into the recess 152 as shown in FIG. The engagement with the point 155 is released, and by this release, the swingable member 37 is swung as shown in FIG. 21 along with the movement of the projection 154, and a series of members are pulled through the string-like body 44 pulled upward by this swinging. The trailing edge link member 53 is raised relative to the series of leading edge link members 51 against the elastic force of the coil spring 106, while the series of leading edge links are lowered via the string-like bodies 41 lowered downward. A transverse member 55 connected to the leading edge link member 51 and the trailing edge link member 53 is provided to lower the member 51 relative to the trailing edge link member 53 and close the opening 2 with each blade 4. Through each blade 4 Periodically to being adapted to be tilted in a vertical state as shown in FIG. 23, then closed by the blades 4 of the opening 2 at the stop of the operation of the electric motor 72 is adapted to be maintained. When the opening 2 is closed by each blade 4, the swingable member 105 is swung in the R4 direction from the position shown in FIG. 9 to the position shown in FIG.

  A sprocket wheel on the vertical frame 12 side, which is configured in the same manner as the sprocket wheel 78, is fixed to a rotating shaft 77 extending from the vertical frame 11 to the vertical frame 12. The blind device 1 includes a gear box 71 and a gear box 71. The vertical frame 12 side is configured in the same manner as the vertical frame 11 side except for the internal mechanism and the electric motor 72.

  In the blind device 1, when the plurality of blades 4 are tilted vertically so as to close the opening 2 as shown in FIG. 23, the protrusion 154 provided on the chain 63 has a recess 152 as shown in FIG. 21. The latch member 156 is in contact with the outer peripheral edge 165 of the swingable member 37 so that the protrusion 153 and the recess 155 are disengaged from each other. The swinging allowable state is maintained. In such a state, when the electric motor 72 is operated and the sprocket wheel 78 is rotated through the spur gear 73, the helical gears 74 and 75, and the rotating shaft 77, the chain 63 travels in the B direction by this rotation. As the chain 63 travels in the B direction, the protrusion 154 also moves about the rotation shaft 77, and the movement of the protrusion 154 causes the swingable member 37 to rotate in the same direction. The uppermost front edge link member 51 and the lower series of front edge link members 51 connected below the uppermost front edge link member 51 through the body 41 are relatively to the series of rear edge link members 53. On the other hand, the uppermost rear edge link member 53 and the lower series of rear edge link members 53 connected to the lower side of the uppermost rear edge link member 53 via the string-like body 44 are elastically coupled to the coil spring 106. As a result of being lowered relative to the series of leading edge link members 51 with the assistance of force, the plurality of blades 4 are tilted synchronously and brought into a substantially horizontal state as shown in FIGS. . When the plurality of blades 4 are brought into a substantially horizontal state, the swingable member 105 is swung in the R3 direction from the position shown in FIG. 10 to the position shown in FIG.

  When the chain 63 further travels in the direction B, the protrusion 154 begins to come out of the recess 152, and the protrusion 154 comes out of the recess 152, so that the latch member 156 is centered on the shaft member 163 by the elastic force of the elastic means 157. As shown in FIG. 14, the protrusion 153 and the recess 155 are engaged with each other, and the rotation of the swingable member 37 is prevented by this engagement. As the one end 61 of the chain 63 rises due to the continued travel of the chain 63 in the B direction, the front edge link member 51 and the rear edge link member 51 below the link mechanism 6 connected to the one end 61 of the chain 63 via the connecting mechanism 65. The edge link member 53 starts to be folded, and by this folding, as shown in FIG. 22, the plurality of blades 4 connected to the link mechanism 6 are sequentially overlapped from below, and the plurality of blades 4 are all raised and overlapped with each other. Then, the operation of the electric motor 72 is stopped and the open state of the opening 2 is maintained.

  When the electric motor 72 is operated in the open state of the opening 2 in the opposite direction, the chain 63 travels in the A direction, and the folding is sequentially released from the upper front edge link member 51 and the rear edge link member 53 by this travel. Thus, the overlapping of the plurality of blades 4 is sequentially released from the upper blades 4. When the link mechanism 6 is fully extended and the plurality of blades 4 are also completely unsuperposed, the projection 154 is inserted into the recess 152 through the guide wedge space 166 as shown in FIG. As a result, the protrusion 154 rotates the latch member 156 against the elastic force of the elastic means 157 to release the engagement of the protrusion 153 with the recess 155, and by this release, the swingable member 37 rotates as the protrusion 154 moves. The rear edge link member 53 is raised relative to the front edge link member 51 via the string-like body 44 pulled upward by this rotation, and the front edge via the string-like body 41 lowered downward. The edge link member 51 is lowered relative to the rear edge link member 53, the plurality of blades 4 are rotated synchronously, and the opening 2 is tilted in the vertical direction as shown in FIG. According to 4 It is in the closed state. Thereafter, the operation of the electric motor 72 is stopped and the closed state of the opening 2 is maintained.

  The blind device 1 of this example includes a frame body 3 arranged in an opening of a building, a plurality of blades 4 juxtaposed to each other in an opening 2 surrounded by the frame body 3, and the uppermost of the plurality of blades 4 A suspending mechanism 5 for suspending the blades 4, a link mechanism 6 for connecting the plurality of blades 4 to each other and being foldable, and a lowermost blade 4 among the plurality of blades 4. An elevating mechanism 7 that lowers the blades 4 and raises and lowers the plurality of blades 4 is provided. The elevating mechanism 7 includes a chain 63 as a flexible long body held in an inflexible state, and a chain 63. Is connected to the lowermost blade 4 and the travel mechanism 64 elastically stops the travel of the one end 61 of the chain 63 below a predetermined position. And a stop mechanism 65 The connection stop mechanism 65 includes a traveling member 91 coupled to one end 61 of the chain 63 so as to travel in the vertical direction as the chain 63 travels, and a movable body movable in the vertical direction coupled to the lowest blade 4. 92 and the traveling member 91 are connected to the traveling member 91 at one end 93 so as to rotate in the R1 direction allowing the lowering of the traveling member 91 relative to the movable body 92, and at the other end 94, the movable body. In order to stop the rotary arm member 95 rotatably connected to 92 and the lowering of the traveling member 91 with respect to the movable body 92, an elastic R2 direction rotational force that resists the rotation of the rotary arm member 95 in the R1 direction is applied. A torsion spring 96 as an elastic urging member for urging the rotating arm member 95, and a pin 102 having a huge head 101 is formed on the traveling member 91; The rolling arm member 95 is formed with a long hole 125 fitted to the pin 102 to connect the rotating arm member 95 to the traveling member 91 so as to be rotatable and linearly movable. The end portion 126 of the long hole 125 located on the other end 94 side is formed with a huge hole portion 127 into which the huge head portion 101 of the pin 102 can be inserted and removed, so that the rotary arm member 95 can be easily connected. It can be released, and maintenance and inspection can be facilitated in addition to manufacturing and assembly of the device.

  The blind device 1 has a range in which the pin 102 of the traveling member 91 does not reach the enormous hole portion 127 from the one end 93 side to the other end 94 side of the rotating arm member 95 when the rotating arm member 95 rotates in the R1 direction. Therefore, when the traveling member 91 is displaced in the vertical direction with respect to the movable body 92 based on the traveling of the chain 63, the pin 102 may fall out of the enormous hole portion 127. On the other hand, when the traveling member 91 and the movable body 92 are taken out from the blind device 1, the rotary arm member 95 is inserted and removed by inserting and removing the huge head portion 101 of the pin 102 from the huge hole portion 127 of the long hole 125. Can be easily connected to and released from the traveling member 91.

DESCRIPTION OF SYMBOLS 1 Blind device 3 Frame 4 Blade 5 Suspension mechanism 6 Link mechanism 7 Elevating mechanism 8 Tilt mechanism 63 Chain 64 Traveling mechanism 65 Connection stop mechanism 91 Traveling member 92 Movable body 95 Rotating arm member 96 Torsion spring 101 Enormous head 127 Enormous hole Part

Claims (4)

  A frame disposed in an opening of a building such as a window, a plurality of blades juxtaposed to each other in the opening surrounded by the frame, and a suspension mechanism for hanging the uppermost blade of the plurality of blades And a link mechanism that connects the plurality of blades to each other and is foldable, and an elevating mechanism that raises and lowers the plurality of blades by raising the lowest blade of the plurality of blades and lowering the lowest blade. The elevating mechanism includes a flexible elongated body that is held in an inflexible state, a traveling mechanism that travels the flexible elongated body, and one end of the elongated body at the lowest blade. And a connection stop mechanism that elastically stops the traveling of the long body below a predetermined position at one end of the long body by the traveling mechanism. Connected to one end of the elongate body to run in the vertical direction A movable member that is movable in the vertical direction connected to the row member, the lowermost blade, and one rotation that allows the traveling member to descend with respect to the movable member. A rotating arm member that is freely connected and rotatably connected to the movable body at the other end, and an elastic material that resists one rotation of the rotating arm member to stop the descent of the traveling member relative to the movable body. An elastic urging member that urges the other rotating force to the rotating arm member, a pin having a huge head is formed on the traveling member, and the rotating arm member includes a rotating arm member. Is formed on the end of the long hole located on the other end side of the rotating arm member. Huge hole for inserting and removing the huge head of the pin Blind apparatus but is formed.   The rotating arm member is arranged so that the pin of the traveling member moves through the long hole in a range where the pin does not reach the enormous hole portion from one end side to the other end side of the rotating arm member in one rotation thereof. The blind device according to claim 1.   A tilt mechanism is provided for tilting the plurality of blades when the plurality of blades are moved up and down by the lifting mechanism. The movable body is supported by the frame body so as to be movable in the vertical direction, and the other end of the rotary arm member is 2. A linearly movable member that is rotatably connected, and a swingable member that is connected to the lowest blade and that is swingably connected to the linearly movable member. The blind device according to 2.   The movable body is connected at one end to the linearly movable member and at the other end to the swingable member, and the other elastic force against one rotational force generated by the tilting of the plurality of blades. The blind device according to claim 3, further comprising an elastic body that biases the swingable member toward the swingable member.

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