JP3103248B2 - Shutter opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter opening / closing device having a function of locking a shutter in a closed state.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional shutter opening / closing device for a ventilation fan. In the figure, the outside of the outer frame 1 (right side in the figure)
, Shutters 2 to 4 are arranged in three stages vertically, and each of the shutters 2 to 4 includes pivot shafts 5 a to 5 fixed to the outer frame 1.
It is supported so as to be able to open and close in the up and down direction via c.
These three shutters 2 to 4 respectively have connecting shafts 6a to 6c at upper end portions slightly separated from the pivot shafts 5a to 5c.
Is connected rotatably to one connecting lever 7. In this case, the connecting shafts 6 a to 6 c are fixed to the shutters 2 to 4, but the supporting holes 7 a to 7 formed to pass the connecting shafts 6 a to 6 c through the connecting lever 7.
c, the support holes 7b, 7 of the lower two-stage shutters 3, 4
About c, it is formed in the shape of a long hole extending in the horizontal direction.

Accordingly, the connecting lever 7 is vertically displaced (translational movement) while being displaced in the indoor and outdoor directions in conjunction with the opening and closing rotation of the shutter 2, and is also centered on the connection shaft 6a of the upper shutter 2. It is rotatable in the indoor and outdoor directions. The connecting lever 7 receives a biasing force obliquely upward toward the indoor side (the left side in the drawing) by the resilient force of the tension coil spring 8 that is obliquely bridged between the connecting lever 7 and the outer frame 1. The shutters 2 to 4 are urged to rotate around the connecting shaft 6a in the direction of the arrow A which is the indoor direction, and urge to rotate the shutters 2 to 4 in the closing direction.

At the lower end of the connecting lever 7, a lock piece 7d is formed to be bent. A protruding stopper 9 is formed in the outer frame 1 by cutting and raising the lock piece 7d. I have. In the closed state of the shutters 2 to 4, the lock piece 7d is located immediately above the stopper 9 as shown by a solid line in FIG.
When a force in an opening direction indicated by an arrow B acts on 4 due to wind pressure or the like, the connecting lever 7 is slightly displaced downward, so that the lock piece 7 d comes into contact with the stopper 9. The contact of the lock piece 7d with the stopper 9 prevents the connecting lever 7 from being further displaced downward, thereby preventing the shutters 2 to 4 from being opened carelessly due to wind pressure or the like.

On the other hand, a string operating mechanism 1 is provided below the outer frame 1.
0 is provided. The drawstring operating mechanism 10 includes a drawstring 1
When 1 is pulled downward, the lifting lever 12 moves downward and is locked in that position. When the drawstring 11 is pulled down again, the lock of the elevating lever 12 is released, and it is configured to move upward by the elastic force of a spring (not shown). The elevating lever 12 is connected to the arm 7e of the connecting lever 7 via a ring 13 that is slanted between the arm 7e and the arm 7e.

Now, suppose that the shutters 2 to 4 are in a closed state shown by a solid line in FIG. 10, and in this state, when the drawstring 11 is pulled down, first, the connecting lever 7 is moved in the direction of the arrow A about the upper connecting shaft 6a. The lock piece 7d is rotated in the direction of the opposite arrow C, thereby moving the lock piece 7d to a position outside the stopper 9 to the outside of the room (the position of the lock piece 7d at this time is indicated by a broken line in FIG. 10). Thereafter, the connecting lever 7 performs a translational movement of moving downward while displacing toward the interior of the room, and rotates the shutters 2 to 4 in the opening direction indicated by the arrow B. 1
0 is set to the open state indicated by the two-dot chain line.

[0007]

As described above, when the shutters 2 to 4 are opened, the connecting lever 7 first rotates in the direction of arrow C about the upper connecting shaft 6a. Then, it turns following the locus indicated by the arrow D in FIG. Thereafter, in order to perform a translational movement in which the connecting lever 7 moves downward while rotating toward the indoor side, the lock piece 7d rotates following the locus indicated by the arrow E in FIG.
It passes right beneath the stopper 9 and moves below it.

As described above, since the locking piece 7d moves in the direction approaching the stopper 9 during the translational movement of the connecting lever 7, for example, when the shutters 2 to 4 are closed, a large force in the opening direction is applied to the shutters 2 to 4. Act,
When the protruding stopper 9 is deformed by receiving a large pressing force and positioned within the movement locus of the lock piece 7d shown by E in FIG. 11, the lock piece 7d comes into contact with the stopper 9 during the translational movement of the connecting lever 7. , As a result, shutters 2-4
May not open completely.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a shutter opening / closing device that can reliably open and close a shutter without the risk that the lock portion will hit the stopper even if the stopper is deformed. To offer.

[0010]

Means for Solving the Problems] The shutter opening and closing apparatus comprising an outer frame, a plurality of upper and lower sheets of the shutter which is opened and closed pivotally supported by the outer frame, these shutters, the rotation center At the part away from the shaft by fitting the shaft and the hole
Is pivotally connected, as well as displaced in the vertical direction while displaced in the room outside direction in conjunction with opening and closing rotation of the shutter, attached to one of the shutters of the plurality of sheets of shutters
Except for one shaft, the hole to be fitted to the other shaft shall be a long hole
Accordingly, the slot around the uniaxial to shutter
One link that can reciprocate in the indoor and outdoor directions within the range ,
This link is used to keep the shutter closed
The reciprocating displacement of the shutter is linked to the opening and closing rotation of the shutter.
In addition, while urging in the displacement direction linked to the closing rotation,
And a stopper provided on the outer frame, comprising: a biasing means for rotating and biasing in the same direction as a displacement direction interlocked with the closing rotation of the shutter, among reciprocating rotations in the indoor and outdoor directions around the one axis. , Provided integrally with the link, and when the shutter is closed , an external force acts on the shutter in an opening direction.
When, prior to with the rotation of the opening direction of the shutter
Abutment child the vertical displacement of the serial link to the stopper
Blocked by and the locking portion is connected to the link, in the closed state of the shutter, said links one
Of the reciprocating rotation in the indoor and outdoor directions around the shaft,
Rotation in the same rotation direction as the displacement direction linked to the opening rotation of the
Moving the link from the stopper , and then displacing the link in a direction interlocking with the opening rotation of the shutter in the indoor / outdoor direction while moving the link up and down.
And an operating mechanism for opening and rotating the shutter by displacing the shutter.

According to a second aspect of the present invention, in the shutter opening / closing device, an arm connected to an operating mechanism is protruded from the link, and the operating mechanism includes a single axis and an arm serving as a center when the link rotates with respect to the shutter. The operation force is applied in a direction substantially perpendicular to a straight line connecting the portion connected to the operation mechanism.

According to a third aspect of the present invention, in the shutter opening / closing mechanism, the operating mechanism is connected to the link by a wire, and the wire is hung on a guide provided on an outer frame at an intermediate portion, and the link rotates with respect to the shutter. The structure is such that a pulling operation force is applied in a direction substantially orthogonal to a straight line connecting a portion of the link and the wire of the link, which is the center of the link.

The shutter opening / closing device according to claim 4 isSha
Of the shaft and hole for connecting the link to the
Fixed to the cutter, the hole is formed in the link,At least
One shutter is opened and rotated before the other shutters.
Slot corresponding to the one shutterHole
IsBecomes the center of rotation of the link with respect to the shutterOne axis inside
It is characterized by being inclined toward the inside of the arc with the center
It is assumed that.

[0014]

According to the first aspect of the present invention, the moving direction of the link after the lock portion comes off the stopper is a direction moving away from the stopper, so that even if the stopper is deformed, the lock portion comes into contact with the stopper. There is no fear. According to the second and third aspects, the operating force of the operating mechanism can be efficiently transmitted to the link.

According to the fourth aspect of the present invention, since the plurality of shutters can be opened and rotated back and forth in time, even if the rotation resistance of the shutters becomes large due to the attachment of oily dust or the like. The shutter can be opened and rotated with a relatively small operation force.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to a shutter opening / closing device for a ventilation fan will be described below with reference to FIGS. In FIG. 4 showing the entire configuration of the ventilation fan,
Reference numeral 21 denotes an outer frame made of an iron plate. The outer frame 21 is formed in a rectangular box shape as shown in FIG.
Are attached via an attachment frame 23. Motor 22
A fan 24 is removably attached to the rotating shaft of the. The fan 24 is surrounded by a bell mouth 25a of a decorative frame 25 detachably mounted on the left side in the drawing, which is the indoor side of the outer frame 21. .

At the outside of the outer frame 21, a shutter 26 is provided.
To 28 are arranged in three stages above and below, and each shutter 26 to
Numeral 28 is supported by pivot shafts 29a to 29c fixed to the outer frame 21 so as to be openable and closable in the vertical direction at a portion near the upper end as shown in FIG. These three shutters 2
6 to 28 are rotatably connected to connecting levers 31 as links at upper end portions slightly apart from the pivot shafts 29a to 29c via connecting shafts (shafts) 30a to 30c, respectively. In this case, the connection shafts 30a to 30c
Is fixed to each of the shutters 26 to 28, and its connecting shaft 30a
30c are fitted and connected to support holes (holes) 31a to 31c formed in the connecting lever 31. Of the support holes 31a to 31c, the support holes 31a and 31b in the upper two stages are formed as elongated holes extending in the lateral direction, and the connecting lever 31 is centered on the lower connection shaft (uniaxial) 30c. It is configured to be able to rotate.

Accordingly, the connecting lever 31 performs a translational movement in which the connecting lever 31 is displaced in the vertical direction, which is the opening and closing rotation direction of the shutters 26 to 28, while being displaced in the indoor and outdoor directions in conjunction with the opening and closing rotation of the shutters 26 to 28. At the same time, it is rotatable around the connecting shaft 30c of the lower shutter 28 in the indoor and outdoor directions. On the upper end side of the connecting lever 31, a short upper arm 3 projecting toward the indoor side is provided.
2, a tension coil spring 33 as an urging means is extended between the upper arm 32 and the outer frame 21 so as to incline upward to the outdoor side. By the elastic force of the tension coil spring 33, the connecting lever 31 is urged upward, and is also urged to rotate around the lowermost connection shaft 30c in the direction of the arrow F which is the outdoor direction. In addition, the shutters 26 to 28 move the arrow G by the upward urging force acting on the connecting lever 31.
Are urged to rotate in the closing direction indicated by.

At the distal end of the upper arm 32 of the connecting lever 31, as shown in FIG. 2, a lock piece 34 as a lock protruding toward the side surface of the outer frame 21.
A substantially L-shaped protruding stopper 35 protruding inward is formed on the side surface of the outer frame 21 with respect to the lock piece 34. Here, in the closed state of the shutters 26 to 28, the connecting lever 31 is rotated in the direction of arrow F about the connecting shaft 30c by the elastic force of the tension coil spring 33. Is located immediately above the stopper 35. When the connecting lever 31 rotates around the connecting shaft 29c in the direction of the arrow I which is on the indoor side, the lock piece 34 comes off from directly above the stopper 35 to the indoor side.

On the other hand, an operation mechanism 36 is provided below the outer frame 1. The operation mechanism 36 is a manually operated string type. When the string 37 is pulled, the elevating lever 38 moves downward from the position indicated by the solid line in FIG. 1 and is locked at the position indicated by the two-dot chain line. . When the drawstring 37 is pulled again, the lock of the elevating lever 38 is released, and it is configured to move upward by the elastic force of a spring (not shown). The lifting lever 38 is connected via a ring 40 to the distal end of a long lower arm 39 provided at the lower end of the connecting lever 31 so as to protrude indoors. A switch (not shown) for turning off the motor 22 is provided inside the operation mechanism 36, and this switch is configured to turn on and off in conjunction with the downward movement and the upward movement of the elevating lever 38. .

Here, in order to efficiently convert the pulling force applied to the drawstring 37 into a rotational urging force of the connecting lever 31 in the direction of arrow I, the ring 40 is connected to the connecting shaft 30c.
It is hung so as to be substantially orthogonal to a straight line (indicated by J in FIG. 1) connecting the lower arm 39 and the hook portion of the ring 40.

Next, the operation of the above configuration will be described. Now, it is assumed that the ventilation fan is in an operation stop state. In this state, the shutters 26 to 28 are in the closed state, and the connecting lever 31 is rotated in the direction of arrow F by the resilient force of the tension coil spring 33. In this state, the shutters 26-2
When a force in the opening direction indicated by the arrow H acts on 8 due to wind pressure or the like, the connecting lever 31 attempts to translate downward. However, at this time, the connecting lever 31 is held in a state of being rotated in the direction of arrow F by the tension coil spring 33, and the lock piece 34 is located immediately above the stopper 35. Abuts on the connecting lever 31
Block the downward movement of Therefore, in the operation stop state, the connecting lever 31 and the shutter 26 to
28 is locked in the closed position, and careless opening rotation of the shutters 26 to 28 due to wind pressure or the like is prevented.

When the drawstring 37 is pulled down to operate the ventilation fan, the pulling operation force is transmitted to the lower arm 39 via the elevating lever 38 and the ring 40, so that the connecting lever 31 is first moved to the lowermost connecting shaft 30c. Is rotated in the indoor direction indicated by the arrow I until the right ends of the elongated support holes 31a and 31b contact the connecting shafts 30a and 30b. Move to the position off the stopper 35 to the indoor side as shown by (indicated by a broken line in FIG. 3). Thereafter, the pulling force of the drawstring 37 causes the connecting lever 31 to perform a translational movement of displacing toward the room side and moving downward while moving toward the indoor side.
8 is rotated in the direction of arrow H to the open position indicated by the two-dot chain line in FIG. 1 (the position of the lock piece 34 at this time is indicated by the two-dot chain line in FIG. 3). The open state of the shutters 26 to 28 is maintained by locking the elevating lever 38 at the lowered position.

When the lifting lever 38 is moved downward, a switch (not shown) is turned on to energize the motor 22, so that the fan 24 rotates and the air inside the room is exhausted to the outside through the outer frame 21 by the blowing action. You. When the drawstring 37 is lowered again to stop this ventilation operation,
The lift lever 38 is unlocked and moves up, and a switch (not shown) is turned off to cut off the power of the motor 22. When the lifting lever 38 is unlocked, the connecting lever 31 is resiliently moved by the tension coil spring 33.
The shutter 26 to 28 rotate in the direction of arrow G around the connecting shaft 30c in the direction of arrow F while performing the translational movement of being displaced upward while being displaced toward the outside of the room. When returning to the position, the lock piece 34 is restored to a position immediately above the stopper 35.

As described above, according to this embodiment, the shutter 2
When the lock levers 6 to 28 are released, the lock piece 34 follows the trajectory indicated by the arrow M from the position indicated by the point K to the position indicated by the point L in FIG. By moving in the direction, it is disengaged from the stopper 35 and, based on the subsequent translational movement of the connecting lever 31, follows the trajectory indicated by the arrow P from the point L to the point N and moves downward while being displaced in the room direction. . As described above, when the connecting lever 31 is moved in parallel with the opening rotation of the shutters 26 to 28, the locking piece 3 is moved.
4 moves in a direction away from the stopper 35, and for some reason a large external force in the opening direction acts on the shutters 26 to 28, so that the stopper 35 receives a pressing force from the lock piece 34 and is deformed. However, there is no possibility that the lock piece 34 abuts on the stopper 35, and the shutters 26 to 28 can be reliably opened and closed.

Further, since the ring 40 is hung so as to be substantially orthogonal to the straight line J connecting the connecting shaft 30c and the hook portion of the ring 40 in the lower arm 39, the operating force applied to the drawstring 37 is reduced. Act on the connecting lever 31 at right angles to the connecting lever 31.
Is efficiently converted into a force for rotating in the direction of arrow I. For this reason, the turning moment acting on the connecting lever 31 in the direction of the arrow I becomes large.
Even if oil dust or the like adheres to the portions 1a to 31c and causes the rotation resistance of the connecting lever 31, the connecting lever 31 can be reliably rotated in the direction of arrow I, and the shutters 26 to 28 are reliably opened. Can be done.

FIG. 6 shows a second embodiment of the present invention. The difference from the first embodiment is that an operating mechanism 36 is provided.
Of the connecting lever 31 and the connecting lever 31. That is, a support ring 41 as a guide is fixed to a portion of the inner surface of the outer frame 21 closer to the upper side. The supporting ring 41 has a wire 42 as a connecting member.
Are inserted, and hooks 42 a and 42 b attached to both ends of the wire 42 are hooked above the lifting lever 38 and the connecting lever 31.

Also in this structure, the portion of the drawstring 37 from the support ring 41 to the connecting lever 31 is connected to the connecting shaft 31c and the connecting lever 31.
Can intersect at a substantially right angle with a straight line (indicated by Q in FIG. 6) connecting the hook portion 42b with the hook portion.
The operation force of the drawstring 37 is indicated by the arrow I on the connecting lever 31.
It can be efficiently converted to rotational power in the direction.

FIG. 7 shows a third embodiment of the present invention. The difference from the first embodiment is that an operation mechanism 43 is provided.
Is an electric type. The electric operation mechanism 4 includes a take-up roller (neither is shown) rotated by a motor, and one end of the wire 44 is connected to the lower arm 39 of the connecting lever 31 by the rotation of the take-up roller. Is wound, thereby operating the connecting lever 31.

FIG. 8 shows a fourth embodiment of the present invention. The difference from the first embodiment is that an electric operation mechanism 45 similar to that of the third embodiment is connected to the inner surface of the outer frame 21. The hook 46a at the tip of the wire 46 is hooked on the upper part of the connecting lever 31. The wire 46 is connected to the connecting shaft 31c and the connecting lever 31.
The hook 46a is set so as to be substantially orthogonal to a straight line (shown by R in FIG. 8) connecting the hook 46a.

FIG. 9 shows a fifth embodiment of the present invention. In this embodiment, two shutters are provided in the upper and lower stages.
1, the same parts as those in FIG. 1 are denoted by the same reference numerals as those of the uppermost and lowermost shutters 26 and 28 except for the middle-stage shutter 27, and parts different from FIG. 1 will be described.

An elongated supporting hole 31a formed to fit and connect the connecting shaft 31a fixed to the upper shutter 26 to the connecting lever 31 is locked from the indoor end to the outdoor end. A single axis serving as a rotation center of the connecting lever 31 when the piece 34 is removed from the stopper 35,
Accordingly, the lower shutter 28 is formed so as to be inclined so as to enter the inside of an arc R passing through the connecting shaft 31a about the connecting shaft 31c of the lower shutter 28, that is, to be inclined downward in the present embodiment.

In this configuration, when the drawstring 37 is lowered to operate the ventilation fan, first, the connecting lever 31 is turned on.
Is connected to the connecting shaft 30 of the lower shutter 28 from the position indicated by the solid line.
is rotated in the interior direction indicated by arrow I until it comes into contact with the right end of the elongated support hole 31a in the figure around the center position c, whereby the lock piece 34 is disengaged from the stopper 35 as shown by the two-dot chain line. Go to

At this time, since the supporting hole 31a is inclined downward from the indoor side to the outdoor side, the supporting hole 31a moves in the
Since the inner upper surface of 1a pushes down the connecting shaft 30a, only the upper shutter 26 pivots slightly in the opening direction (direction of arrow H) as shown by the two-dot chain line. Thereafter, the connecting lever 31 performs a translational motion of moving downward while displacing toward the indoor side, and the
6 is further rotated in the opening direction, and the lower shutter 28 is rotated in the opening direction. Then, finally, the lift lever 38 is locked at the lowered position, so that the shutters 26 and 28 are held open.

As described above, in this embodiment, the lower shutter 26 starts rotating in the opening direction after the upper shutter 26 first rotates in the opening direction in accordance with the pulling operation of the drawstring 37. , The joint between the lower end edge of the upper shutter 26 and the upper end of the lower shutter 28, the connecting shafts 30a and 30c, and the pivot shafts 29a and 2;
When oil dust adheres to the portion 9c and the rotational resistance of the shutters 26 and 28 increases, the two shutters 26 and 2
Unlike the structure in which the shutter 8 starts to open and rotate at the same time, the shutters 26 and 28 can be opened with a relatively small operating force on the drawstring 37.

When three or more shutters are provided as shown in FIG. 1, the upper support hole 31a is formed to be inclined downward from the left end, and the middle support hole 31b is formed to be inclined downward from the middle. For example, the upper shutter 26, the middle shutter 27, and finally the lower shutter 28 can be sequentially rotated in the opening direction.

In addition, the present invention is not limited to the embodiment described above and shown in the drawings. For example, the present invention is not limited to a shutter opening / closing device of a ventilation fan, and can be widely applied to a general device for opening / closing a shutter. Various changes can be made within the scope of the invention.

[0038]

As described above, according to the present invention, the following effects can be obtained. According to the shutter opening / closing device of the first aspect, when the shutter is opened by the operating mechanism, the lock portion is disengaged from the stopper.
Since the shutter is displaced in a direction away from the stopper, even if the stopper is deformed, there is no possibility that the lock portion contacts the stopper, and the shutter can be opened and closed reliably.

According to the shutter opening and closing device according to the second and third aspects, the operating force of the operating mechanism can be efficiently transmitted to the link, so that the turning force of the connecting lever when the locking portion of the connecting lever is released from the stopper is provided. Is small, and even if the turning resistance of the connecting lever is increased due to the attachment of oil and dust, the connecting lever can be surely turned to remove the lock portion from the stopper. According to the shutter opening / closing device of the fourth aspect, the plurality of shutters can be rotated in the opening direction back and forth in time rather than starting to rotate in the opening direction at the same time. Even if the rotation resistance is increased due to dust or the like, the shutter can be rotated in the opening direction with a relatively small operation force.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a main part showing a first embodiment of the present invention.

FIG. 2 is a front view of a lock piece and a stopper.

FIG. 3 is a side view showing a movement locus of a lock piece.

FIG. 4 is a longitudinal side view of a ventilation fan.

FIG. 5 is a perspective view of a main part.

FIG. 6 is a view corresponding to FIG. 1, showing a second embodiment of the present invention;

FIG. 7 is a diagram corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 1, showing a fourth embodiment of the present invention;

FIG. 9 is a view corresponding to FIG. 1, showing a fifth embodiment of the present invention.

FIG. 10 shows a conventional shutter opening / closing device for a ventilation fan.
Equivalent figure

FIG. 11 is a diagram corresponding to FIG. 3;

[Explanation of symbols]

21 is an outer frame, 26 to 28 are shutters, 30a to 30c are connection shafts, 31 is a connecting lever (link) , 31
a to 31c are support holes, 33 is a tension coil spring (biasing means), 34 is a lock piece (lock portion), 35 is a stopper,
36 is an operation mechanism, 37 is a drawstring, 39 is a lower arm (arm), 41 is a support ring (guide), 42 is an operation mechanism, 43
Is a motor, 44 is a wire, 45 is an operation mechanism, and 46 is a wire.

Claims (4)

(57) [Claims] And 1. A border, a the opening in the outer frame pivotally supported vertically plurality Shah <br/> jitter, these shutters, the shaft and the hole at a site distant from the rotation center is pivotally connected by the fitting of the upper while being displaced in the chamber outside direction in conjunction with opening and closing rotation of the shutter
The shutter is displaced in the downward direction, and among the plurality of shutters,
Except for one axis for one shutter,
That by the long hole to hole, reciprocating rotation allowed to the room outside direction within the range of the long hole in the center of the one <br/> shaft to the shutter
One link and this link to keep the shutter closed
The reciprocating displacement of the shutter is linked to the opening and closing rotation of the shutter.
In addition, while urging in the displacement direction linked to the closing rotation,
A biasing means for rotating and biasing in the same direction as a displacement direction interlocked with the closing rotation of the shutter, among a reciprocating rotation in the indoor and outdoor directions around the one axis; and a stopper provided on the outer frame. The shutter is provided integrally with the link, and when the shutter is closed , an external force acts on the shutter in an opening direction.
When a lock unit for <br/> Therefore blocking to abut the vertical displacement of the Li <br/> link interlocked with the rotation of the opening direction of the shutter to the stopper, it is connected to the link In the closed state of the shutter
To reciprocate the link in the indoor and outdoor directions around the one axis.
Of the movement, the displacement direction interlocked with the opening rotation of the shutter
By turning in the same turning direction as above, the lock portion is removed from the stopper , and then the link is
Of the directions, it is displaced in the direction linked to the opening rotation of the shutter
A shutter opening / closing device comprising: an operation mechanism for displacing the shutter in the vertical direction while rotating the shutter to open and rotate the shutter. 2. An arm connected to the operation mechanism protrudes from the link, and the operation mechanism includes a portion connected to the operation mechanism of the one axis and the arm serving as a center when the link rotates with respect to the shutter. The shutter opening / closing device according to claim 1, wherein an operation force is applied in a direction substantially orthogonal to a straight line connecting the shutter opening and closing. 3. The operation mechanism is connected to a link by a wire, and the wire is hung on a guide provided on an outer frame at an intermediate portion, and is connected to one axis serving as a center when the link rotates with respect to a shutter. 2. The shutter opening / closing device according to claim 1, wherein a pulling operation force is applied in a direction substantially orthogonal to a straight line connecting portions where the wires are connected in the link. 4. A shaft for connecting a link to a shutter.
Of the holes, the shaft is fixed to the shutter, and the hole is formed in the link
Is further to be opened rotating the at least one shutter before other shutter, the long hole-shaped hole corresponding to the one shutter during rotation of the link relative to the shutter
Shutter opening and closing device according to any one of claims 1, characterized in that it is inclined toward the uniaxial as a heart inside the arc centered 3.