JPH0538207Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a shutter device, in which the shutter is automatically locked by lowering the shutter and closing the opening.

(Prior Art) Conventionally, as a locking device for this type of shutter device, for example, as described in Japanese Utility Model Publication No. 58-36752, a key bar of the shutter is guided toward the lower end of the rear surface of a guide rail. A pawl plate having a guide slope and a locking surface for locking the key bar is rotatably mounted on a support shaft, this pawl plate is projected into the guide rail by a compression spring, and one end is attached to the pawl plate. A structure is known in which the other end of the wire is fixed to a plunger of a solenoid, and the wire is suspended in the middle from a guide pulley that guides the wire in an L shape.

Then, by energizing the solenoid, the wire is pulled through the guide pulley, and the claw plate protruding into the guide rail is pulled against the compression spring, causing the claw plate to exit from the guide rail and pass through the lock bar of the shutter. It was designed to let you do so.

Furthermore, as described in Japanese Utility Model Application Publication No. 55-92890, a rotary member is pivotally supported at the lower end of the shutter by a support shaft, and left and right latches that can be moved back and forth in the left and right directions are attached to both ends of the rotary member. The inner ends of the left and right latches are rotatably supported by a shaft, and the left and right latches are biased by springs so that their respective tips always protrude into the guide rail. A structure is known in which stoppers that releasably engage the tips of the left and right latches are provided so as to be movable back and forth in the left and right direction, and the left and right stoppers are attached to the armature of a solenoid fixed to the outside of the left and right guide rails. ing.

Furthermore, as described in Japanese Utility Model Application Publication No. 57-119098, a locking plate having a locking piece that removably engages with the pipe shutter is rotatably mounted on the main shaft of the frame of the shutter case. A recess is formed in the locking plate at a position 90 degrees offset from the locking piece, a middle part of the latch lever is rotatably supported on the frame by a support shaft, and the tip of the latch lever is engaged and disengaged in the recess. A latch pin that can be freely engaged is provided protrudingly, and a plunger of a solenoid is rotatably attached to the rear end of the latch lever by a support shaft, and the locking plate is biased to the main shaft to engage the latch pin. A structure is known that includes a spring that engages the recess and holds the locking piece in a neutral position, that is, a position that engages the pipe shutter.

(Problems to be Solved by the Invention) In the structures of the types described in each of the above-mentioned publications, the lift balance of the shutter is normally set to be slightly upward and downward by a balance spring that balances the weight of the slats. At this time, if the spring force is larger than necessary due to variations in the manufacturing error of the balance spring, when the shutter is fully closed, the structure described in Japanese Utility Model Publication No. 58-36752 will cause the shutter key bar to As a result, an upward load is applied to the locking surface of the pawl plate, and the key bar of the shutter is pressed against the locking surface of the pawl plate more than necessary, resulting in a frictional connection, and depending on the traction force of the solenoid plunger, the compression spring is There is a problem in that, in combination with the auxiliary force, the nail plate may not be able to be pulled completely in the exit direction.

In addition, in the structure described in Japanese Utility Model Application Publication No. 55-92890, an upward load is applied to the stopper at the tip of the latch, and the tip of the latch is applied to the stopper more than necessary. Due to the lateral suction force of the solenoid's armature, it may not be possible to pull the stopper in the withdrawal direction completely. A load perpendicular to the operating direction may cause the armature to not operate smoothly. Therefore, increasing the suction force of the solenoid will increase costs, increase the size, and require a large storage space on the outside of the guide rail. The problem is that space needs to be provided.

Furthermore, in the structure described in Japanese Utility Model Application No. 57-119098, an upward load is applied to the locking piece of the locking plate by the pipe of the pipe shutter, and the concave portion of the locking plate is There is a problem in that the latch pin is pressed against the latch pin of the latch lever more than necessary, resulting in frictional coupling, and depending on the traction force of the plunger of the solenoid, the latch pin may not be fully pulled in the withdrawal direction.

Moreover, in the structure described in each of the above publications, the stopper is electrically moved forward and backward by a solenoid, so even when the shutter is locked in the fully closed state, if there is a power outage or the solenoid malfunctions, the shutter will be activated. cannot be opened,
There is this inconvenience.

In addition, in the structure of Japanese Utility Model Publication No. 58-36752, the wire may stretch depending on the frequency of its use, so in such a case, play may occur in the wire, making the pulling operation of the claw plate uncertain. Otherwise, a situation may arise in which the shutter cannot be opened.

Therefore, the present invention was developed in consideration of these points. Although the shutter can be automatically locked when the shutter is fully closed, it is necessary to lock the shutter when opening the fully closed shutter. The shutter can be unlocked smoothly and reliably, and the shutter can be opened easily, and even if an unexpected situation such as a power outage occurs while the shutter is locked, the shutter can be easily unlocked manually. The purpose of this invention is to provide a shutter device that can perform

(Means for Solving the Problems) The shutter device of the present invention includes guide rails 2, 2 that are erected facing each other on the left and right, and a structure that is provided between the guide rails 2, 2 on the left and right so that they can be opened and closed in the vertical direction. A shutter 6 is wound and unwound via a balance spring that balances the weight of the slat 5 on a winding shaft, and a shutter 6 is provided at the bottom of both sides of the shutter 6 so as to be able to move forward and backward in the left and right direction, and is formed at the tip of each. Spring 27, 27 that urges the locking portions 26, 26 in a direction to always project into the left and right guide rails 2, 2, and the respective locking portions 26, 26 against the springs 27, 27.
lock bars 20, 20 each having an operating lever 11 for retracting the slider from inside the left and right guide rails 2, 2;
A support shaft 3 is installed at the bottom of the left and right guide rails 2, 2.
8, 38, and locking portions 26, 26 of the lock bars 20, 20 are provided at the upper part to be rotatable in the vertical direction.
A locking surface 4 having guide slopes 42, 42 for guiding the locking portions 26, 42 and locking the locking portions 26, 26 at the lower part thereof.
3, 43, and are always biased in the direction of protruding into the left and right guide rails 2, 2, and are located above the left and right stopper bodies 39, 39. Interlocking bodies 63, 63, which are movable in the vertical direction and are connected to the lower ends of the plungers 73, 73, which are fixed to each other and attracted by the excitation operation.
It is provided with solenoids 72, 72 which lock the stopper bodies 39, 39 in a state of protruding into the respective guide rails 2, 2 via the respective guide rails 92, 92, and release this lock.

(Function) In the shutter device of the present invention, the solenoid 7
At 2, 72, the stopper bodies 39, 59 are protruded into the respective guide rails 2, 2 through the interlocking bodies 63, 63, 92, 92 connected to the lower ends of the plungers 73, 73, and the shutter is operated in a locked state. 6 along the left and right guide rails 2, 2. The locking portions 26, 2 of the left and right lock bars 20, 20 provided at the bottom of the shutter 6
6 comes into contact with the guide slopes 42, 42 of the left and right stopper bodies 39, 39, and when the left and right locking parts 26, 26 are pushed and slid down along the guide slopes 42, 42, this The left and right lock bars 20, 20 each have their own coil springs 2.
7, 27 and is pushed back inward.

Further, when the locking portions 26, 26 of the left and right lock bars 20, 20 are further lowered and pass through the respective guide slopes 42, 42, the restoring forces of the coil springs 27, 27 lock the left and right lock bars 20, 20. is again pushed outward in the left and right direction,
The locking parts 26, 26 extend to the lower part of the locking surfaces 43, 43 of the stopper bodies 39, 39, and the locking surfaces 4
At 3 and 43, the locking portions 26 and 26 are locked.
As a result, the space between the guide rails 2, 2 is completely closed by the shutter 6, and this shutter 6
are the locking portions 26 of the left and right lock bars 20, 20,
26 and left and right stopper bodies 39, it is automatically locked in the fully closed state.

Next, when opening the shutter 6, when the left and right solenoids 72, 72 are energized, the respective plungers 73, 73 are attracted, and the interlocking bodies 63, 6 connected to the lower ends of the plungers 73, 73 are
The locking of the stopper bodies 39, 39 by the locks 3, 92, 92 is released.

Next, when the shutter 6 is pulled up, the locking portions 26, 26 of the left and right lock bars 20, 20 push up the locking surfaces 43, 43 of the stopper bodies 39, 39, and the stopper bodies 39, 39
are rotated about the support shafts 38, 38 and retreated from within the guide rails 2, 2, so that the shutter 6 is easily pulled up and opened.

In addition, the locking portions 2 of the left and right lock bars 20, 20
6, 26 pass through the stopper bodies 39, 39, the stopper bodies 39, 39 are automatically rotated back into the guide rails 2, 2.

Next, if it is necessary to open the shutter 6 in an emergency when the solenoids 72, 72 cannot be energized, such as during a power outage, when the operating lever 11 is manually operated, the left and right lock bars 20, 20 are moved by the spring 2.
7, 27, the locking portions 26, 26 are disengaged from the left and right stopper bodies 39, 39, respectively, and retreated from within the guide rails 2, 2, so that the shutter 6 is unlocked. , the shutter 6 can be manually pulled up and opened easily.

(Embodiment) Hereinafter, the structure of an embodiment of the present invention will be described based on the accompanying drawings.

In Fig. 1, reference numeral 1 denotes a shutter box, and left and right guide rails 2, 2 are disposed at the bottom of both ends of the shutter box 1, facing each other in parallel in the vertical direction. It is formed into a U-shaped cross section with guide grooves 3, 3 opening inwardly toward each other. Further, a draining member 4 is provided continuously between the lower ends of the left and right guide rails 2, 2.

Next, in the shutter box 1, a winding shaft (not shown) is rotatably mounted horizontally, and on this winding shaft, a shutter 6 in which a number of slats 5 are connected via a balance spring is mounted. A baseboard body 7 is connected to the slat 5 at the lowest end of the shutter 6. A door body (not shown) for lifting and lowering operations is integrally fixed to the outer side of the baseboard body 7, and a door body (not shown) for lifting and lowering operations is integrally fixed to the outer side of the baseboard body 7. An unlocking mechanism 9 for operation is provided.

As shown in FIG. 6, in the unlocking mechanism 9, an intermediate portion of an operating lever 11 is pivotally attached to an intermediate portion of the accommodation recess 8 via a support shaft 10 so as to be rotatable in the left-right direction. The lower end of 11 and the support shaft 1
Interlocking shafts 12, 12 are provided in a protruding manner at upper symmetrical positions across 0. Also, this upper and lower interlocking shafts 12, 12
Left and right interlocking plates 1 that move forward and backward in the left and right direction
Long grooves 1 formed at the inner ends of 4 and 14, respectively.
5 and 15 are engaged, and the interlocking plates 14 and 14 and the operating lever 11 are interlocked. Further, the outer portions of the left and right interlocking plates 14, 14 are inserted into guide grooves 17, 17 between reinforcing locking metal fittings 16, 16 fixed to the left and right upper and lower sides of the housing recess 8, so as to be able to move forward and backward in the left and right direction. , locking steps 19, 19 for locking the upper and lower outer ends 18, 18 of the left and right interlocking plates 14, 14 are formed facing each other on the upper and lower surfaces of the left and right upper and lower locking fittings 16, 16. has been done. Further, the inner ends of the left and right lock bars 20, 20 are integrally connected to the outer ends of the left and right interlocking plates 14, 14 by connecting pins 21, 21, and the left and right lock bars 20, 20 are connected to the outer ends of the left and right interlocking plates 14, 14. Reinforcement pieces 22, 2 fixed to the upper and lower outer sides in the left and right direction
It is inserted into the guide grooves 23, 23 between the two so that it can move forward and backward. Furthermore, locking portions 26, 26 are formed at the tips of the left and right lock bars 20, 20, the upper surfaces of which are horizontal engagement surfaces 24, 24, and the lower surfaces of which are circular guide surfaces 25, 25. . moreover,
The long groove 1 of the left and right interlocking plates 14, 14
Coil springs 27, 27 are stretched between the vicinity of the locking members 5, 15 and the locking fittings 16, 16, respectively. And this coil spring 2
The operating lever 11 is rotated and tilted to one side about the support shaft 10 by the biasing forces 7 and 27, and the left and right interlocking plates 14 and 14 are held in positions where they are respectively moved outward, The left and right lock bars 20, 20 connected to the left and right interlocking plates 14, 14 are pushed outward, and the locking portions 26, 26 at their tips are locked into the guide grooves 3, 3 of the guide rails 2, 2. It has come to be constantly protruded from within. Further, the accommodation recess 8 of the baseboard body 7
The operating lever 11 is covered with a cover 28 in a rotatably protruding state.

Next, as shown in FIG.
9, 29, and these left and right support frames 29, 2
9 is adapted to be fixed to a wall surface of an entrance or the like where the guide rails 2, 2 are attached. The left and right support frames 29, 29 are opened in the vertical direction on the opposite side from the surface portion fixed to the wall surface, and one side of the guide rails 2, 2 is provided at the edge of one side of the openings 30, 30. A locking protrusion 3 that protrudes in the side vertical direction
Engagement grooves 32, 32 into which the guide rails 2, 3 are fitted are formed in the vertical direction, and the guide rails 2, 2 are provided on the other side opening edges of the openings 30, 30 to protrude in the vertical direction. Connect the engaging pieces 33, 33 with a plurality of screws 3.
Attachment pieces 35, 35 to be attached at 4, 34 are formed in the vertical direction.

Further, as shown in FIGS. 3 and 4, locking mechanisms 36 and 36 are provided inside the lower portions of the left and right support frames 29 and 29, respectively. The left and right locking mechanisms 36, 36 have a main body case 37 that is housed and fixed in the left and right support frames 29, 29, respectively, and is connected to a portion near the lower end of the main body case 37 via a support shaft 38. A stopper body 39 is pivotally supported to be freely rotatable in the vertical direction. This stopper body 39 has a U-shaped support frame 40 that is pivotably supported vertically on the support shaft 38, and a front plate 41 of this support frame 40 is provided with the lock bar 2.
The locking portions 26, 26 of 0 and 20 are formed horizontally at the lower end of the guide diagonal piece 42 as the main guiding surface that guides the locking portion 26 when descending.
Approximately triangular stopper plates 44 having locking pieces 43 as locking surfaces for locking 6 and 26 are each fixed integrally. A spring 45 is wound around the support shaft 38, and one end of the spring 45 is engaged with the front plate 41 of the support frame 40, and the other end of the spring 45 is engaged with the front plate 41 of the support frame 40. It is locked to. The stopper body 39 is always biased and supported by the spring 45 at the guide port 48 of the main body case 37.
The guide rails 2, 2 are projected from the window holes 49 into the guide grooves 3, 3 so as to be freely retractable.

Further, an operating frame 50 which is approximately L-shaped in side view and which locks and releases a slide plate 63 (to be described later) at approximately the middle portion of the main body case 37 is rotatable in the vertical direction via a support shaft 51 at a bent portion thereof. It is supported on. Further, a coil spring 54 is stretched between the mounting shaft 52 supported between the horizontal parts of the operating frame 50 and the side plate 53 of the main body case 37.
0 facing vertical bearing pieces 55 are the main body case 3.
It is biased in a direction approaching the back plate 56 of No. 7. Further, a support shaft 57 is horizontally suspended between the opposing bearing pieces 55 of the operating frame 50, and a bearing 58 is attached to the support shaft 57.
A spacer 59 held on one side of the spacer 7 is rotatably mounted on an axis.

Further, a guide 62 having a collar 60 and a washer 61 is protruded from the upper and lower parts of the lower side of the back plate 56 of the main body case 37, and a slide plate 63 as an interlocking body is formed in the upper and lower direction of the upper and lower guides 62. It is supported so as to be slidable in the vertical direction via a long guide groove 64. Connecting pieces 65 are protruded from opposite sides of the lower end of the slide plate 63 in the width direction, and the support frame 40 of the stopper body 39 is inserted into the horizontal elongated hole 66 formed in the opposing connecting pieces 65. A shaft rod 67 that is pivotally supported by both side pieces 68 is inserted. As the slide plate 63 moves up and down, the stopper body 39 is rotated in the up and down direction about the support shaft 38, and is moved into and out of the guide groove 3. Further, as shown in FIGS. 3 to 5, a triangular hook piece 69 that engages with and disengages from the bearing 58 of the operating frame 50 is integrally protruded from the upper end of the slide plate 63.
9 has a horizontal locking step 70 that is locked to the top of the bearing 58 at the bottom and a pushing slope 71 that pushes the bearing 58 from below to the side and rides above the bearing 58. There is. This hook piece 69 is located above the bearing 58, and when the locking step 70 is locked to the upper part of the bearing 58, the rotation of the stopper body 39 is locked via the slide plate 63. It is becoming more and more like this.

Furthermore, a solenoid 72 is fixed in the upper part of the main body case 37, and a sliding tube 75 is fitted into the plunger 73 of the solenoid 72 so as to be able to move forward and backward through a coil spring 74 that biases downward. An L-shaped interlocking piece 7 is attached to the lower end of the cylinder 75.
6 is fixed, and the upper horizontal portion 7 of this interlocking piece 76
7 is adapted to be stopped by a stopper 78 fixed to the back plate 56 of the main body case 37. Further, a horizontal protrusion 80 at the lower end of this vertical portion 79 is engaged with a protrusion 81 of the operating frame 50. Then, due to the contraction of the plunger 73, the operating frame 50 is rotated upward about the support shaft 51 through the interlocking piece 76 against the coil spring 54, and the bearing 58 is moved forward in the direction away from the back plate 56. , the bearing 58 can be removed from the locking step 70 of the hook piece 69. The solenoid 72 is electrically connected to a power source.

Next, the operation of the above structure will be explained.

When closing the space between the left and right guide rails 2, 2, the shutter 6 wound around the winding shaft of the shutter box 1 is wound back against the balance spring while closing the space between the left and right guide rails 2, 2. It descends along the guide grooves 3, 3. Then, the baseboard body 7 connected to the lowest part of the shutter 6 approaches between the left and right locking mechanisms 36, 36, and the locking portions 2 of the left and right lock bars 20, 20 provided within the baseboard body 7
6 and 26 are the stopper bodies 3 of the locking mechanisms 36 and 36
When the guide slopes 42, 42 of the stopper plates 44, 44 at 9, 39 come into contact with each other, the arcuate guide surfaces 25, 25 of the left and right locking portions 26, 26 move along the guide slopes 42, 42. Lock bar 20,2
0 is pushed and slid downward, and the left and right lock bars 20, 20 are gradually pushed back into the housing recess 8 against the respective coil springs 27, 27. Then, when the locking parts 26, 26 of the left and right lock bars 20, 20 further descend and pass through the respective guide diagonal pieces 42, 42, the restoring forces of the coil springs 27, 27 simultaneously lock the left and right lock bars 20, 20 is pushed outward again, the engaging surfaces 24, 24 of the locking parts 26, 26 advance to the lower part of the locking pieces 43, 43 of the stopper bodies 39, 39, and the locking pieces 43, 4
It is locked at 3. Further, at the same time that the locking pieces 43, 43 are locked to the locking parts 26, 26, the engaging piece 7a protruding from the lower front end of the baseboard body 7 is engaged with the draining member 4. As a result, the space between the guide rails 2, 2 is completely closed by the shutter 6, and the shutter 6 also closes the left and right lock bars 20, 20.
The fully closed state is automatically locked by the locking parts 26, 26 and the stopper bodies 39, 39 of the locking mechanisms 36, 36. That is, the left and right lock bars 20,
The stopper bodies 39, 3 are connected to the locking parts 26, 26 of 20.
Even if the locking pieces 43, 9 of 9 are pushed upward to release the lock, the slide plate 63 cannot be lowered by the hook piece 69 that locks the locking step 70 on the bearing 58 of the operating frame 50. is locked, the stopper bodies 39, 39 connected to this slide plate 63 are not rotated, and therefore the shutter 6 is not only affected by the winding force of the shutter 6 due to the balance spring of the winding shaft, but also by manual operation of the shutter 6. Even if you try to pull it up with something like this, it will remain locked and will not open.

Next, when the shutter 6 is to be opened, the switch connected to the power source is closed, and the left and right solenoids 7 are
When electricity is applied to the left and right solenoids 7
As the plungers 73, 73 operate, the plungers 73, 73 contract against the coil springs 74, 74, and the interlocking pieces 76, 76 connected to the tip ends of the plungers 73, 73 contract against the support shaft 54, 54 via the horizontal protrusions 80, 80 and the protrusions 81, 81.
The operating frames 50, 50 are then pulled upward and rotated around the actuators 51, 52.
When the rotation of the frame 50 is 0, the bearing piece 55 of the frame 50 is
is rotated in a direction away from the rear plates 56, 56,
Bearings 58, 58 are supported between the bearing pieces 55, 55 via support shafts 57, 57, and a back plate 56,
56 is opened, and the bearings 58, 58 are connected to the hook pieces 69,
69 is disengaged from the locking steps 70, 70, and the lock of the slide plates 63, 63 is therefore released.

Next, when the shutter 6 is pulled up, the locking portions 26, 26 of the left and right lock bars 20, 20 provided on the baseboard 7 of the shutter 6 push up the locking pieces 43, 43 of the stopper bodies 39, 39, and , these stopper bodies 39, 39 are connected to the support shaft 3.
Stopper plates 44, 4 which are rotated about 8, 38 and have guide diagonal pieces 42, 42 and locking pieces 43, 43 of the stopper bodies 39, 39;
4 are rotated into the respective main body cases 37, 37. Also, along with the rotation of the stopper bodies 39, 39, slide plates 63, 63 connected to both side pieces 68, 68 of the stopper bodies 39, 39 via shaft rods 67, 67 are interlocked with the rotation of the stopper bodies 39, 39. This slide plate 6
The hook pieces 69, 69 at the upper ends of the bearings 3, 63 are moved below the bearings 58, 58. Therefore, the stopper plates 44, 44 are retracted from the inside of the guide grooves 3, 3 and housed in the respective main body cases 37, 37, and the guide grooves 3, 3 are opened, and the stopper plates 44, 44 are moved along the guide grooves 3, 3. The shutter 6 is then raised while being rolled up on the winding shaft and is housed in the shutter box 1.

Further, as described above, when the locking portions 26, 26 of the left and right lock bars 20, 20 of the skirting boards 7, 7 pass through the positions of the stopper bodies 39, 39, the stopper bodies 39, 39 lock the respective springs 45,
The stopper plates 44, 44 of the stopper bodies 39, 39 are again projected into the guide grooves 3, 3 by the return force of the stopper members 45. Also, due to the return rotation of the stopper bodies 39, 39, the slide plate 6
3, 63 are raised along the back plates 56, 56 of the main body case 37, and the push slopes 71, 7 on the hook pieces 69, 69 at the upper end of the slide plates 63, 63
1 pushes the bearings 58, 58, and the operating frame 5
0 and 50 are rotated about the support shaft 51 against the coil springs 54 and 54, and the hook piece 6 is rotated from between the bearings 58 and 58 and the back plates 56 and 56.
9, 69 are projected upward. At the same time, the operating frames 50, 50 are rotated back by the returning force of the coil springs 54, 54, and the bearings 58, 58 are engaged with the locking steps 70, 7 of the hook pieces 69, 69.
0, and the lowering movement of the slide plates 63, 63 and the rotational movement of the stopper bodies 39, 39 are locked again by the operating frames 50, 50.

Next, when the shutter 6 is in the fully closed state in which it is lowered, the solenoids 72 and 7 are
When it is necessary to open the shutter 6 in an emergency when the shutter 2 cannot be energized, the operating lever 11 of the unlocking mechanism 9 protruding from the inner middle part of the baseboard body 7 is manually rotated about the support shaft 10. The left and right interlocking plates 14, 14 engaged with the upper and lower interlocking shafts 12, 12 of the operating lever 11 are pulled inwardly against the coil springs 27, 27, respectively, and the left and right interlocking plates 14, 14
The left and right lock bars 20, 20 fixed to the left and right lock bars 20, 20 are also pulled inwardly, and the left and right lock bars 20, 20
The locking parts 26, 26 at the tips of the guide grooves 23, 23
The guide grooves 3, 3 of the respective guide rails 2, 2 are opened. Therefore, the lock of the shutter 6 is released and the shutter 6 can be easily pulled up and opened.

Next, in the embodiment, the stopper bodies 39, 39 on both the left and right sides are operatively connected to the plungers 73, 73 of the solenoids 72, 72 via the rotatable operating frames 50, 50 and the slide plates 63, 63 that can be raised and lowered. Although the structure described above is not limited to this structure, the stopper bodies 39, 39 on both the left and right sides may be operatively connected to the respective solenoids 72 by the structure shown in FIGS. 7 to 9, for example. That is, as shown in FIGS. 7 to 9, a U-shaped guide frame 85 is fixed to the upper part of the back plate 56 of the main body case 37 on both left and right sides, and an upper plate 86 and a lower plate 87 of this guide frame 85 are fixed. , 87, an interlocking rod 88 connected to the plunger 73 of the solenoid 72 is inserted into the upper and lower guide holes bored in the center of the solenoid 72 so as to be vertically movable. A coil spring 90 is attached to the interlocking rods 88, 88 between the locking pin 89 protruding halfway through the interlocking rod 88 and the upper plate 86.
is wound, and the interlocking rods 88, 88 are urged downward by the springs 90, 90. Further, the upper part of a roller frame 92 as an interlocking member is fixed to a guide shaft 91 integrally fixed to the lower end of the interlocking rod 88 via a vertically long guide groove 93, so that the upper part of the roller frame 92 can move vertically. A stopper roller 94 that engages and disengages from the stopper body 39 is rotatably mounted on a shaft 95 at the lower end of the frame 92, and a plurality of guide rollers 96 are mounted above the stopper roller 94 and are attached to the roller frame 92. It is rotatably mounted on an axis at 97. Further, a locking step 98 is formed on the upper part of the stopper body 39 which is rotatably supported by a support shaft 38, and a locking step 98 is formed on which the stopper roller 94 is engaged and disengaged. An arcuate guide slope 99 is formed to guide the stopper roller 94 from the upper end to the outer side.

Further, in the stopper body 39, a locking piece serving as a locking surface for locking the locking portion 26 of the lock bar 20 is formed at the lower end of the guide slope 42.

The stopper bodies 39, 39 are always urged by springs 45, 45 wound around the support shafts 38, 38 so as to protrude outward in the counterclockwise direction in FIG. The stopper rollers 94 of the roller frames 92, 92, which are lowered by their own weight, are attached to the locking steps 98, 98 of the roller frames 92, 92,
94 is engaged, and the stopper rollers 94, 94
The stopper bodies 39, 39 are locked from rotating clockwise.

Also, when the solenoids 72, 72 are energized, the eighth
As shown in the figure, the plungers 73, 73 and the interlocking rod 88 are contracted against the coil springs 90, 90, and the guide shaft 91 of the interlocking rod 88,
91 pulls up the roller frames 92, 92, and the stopper rollers 94, 94 pull up the locking steps 98,
98, and the lock of the stopper bodies 39, 39 is released. When the shutter 6 is pulled up in this state, the locking parts 26, 26 of the lock bars 20, 20 push up the stopper bodies 39, 39 against the springs 45, 45, and the stopper bodies 39, 39 The stopper body 39 is rotated clockwise in FIG.
39 is rotated by guides 99, 99 while pushing up roller frames 92, 92 via stopper rollers 94, 94, as shown in FIG.
6 and 96, it is pushed up within the range of the guide long grooves 93 and 93 relative to the guide support shafts 91 and 91. And the locking part 2 of the lock bar 20, 20 of the shutter 6
6, 26 pass through the stopper bodies 39, 39, the stopper bodies 39, 39
It is again rotated counterclockwise in FIG. 7 by the return force of step 5. Also, when the electricity to the solenoids 72, 72 is turned off, the coil springs 90, 90
The interlocking rods 88, 88 are lowered by the return elasticity of the roller frames 92, 92 are automatically lowered by their own weight, and the stopper roller 94 is again engaged with the locking steps 98, 98 of the stopper bodies 39, 39. The rotation of the stopper bodies 39, 39 is then locked.

[Effect of idea]

According to the present invention, when the shutter is lowered with the stopper bodies protruding into the guide rails and locked, the locking portions of the left and right lock bars are
The shutter comes into contact with the guide slope of the stopper body, and descends while being pushed back by the guide slope against the spring, and at the same time as it passes through this guide slope, it protrudes and is locked with the locking surface of the stopper body, so that the shutter is , can be automatically locked when fully closed.

Also, when the solenoid is energized, the plunger is sucked upward and the lock of the stopper body locked by the interlocking body is reliably released.Therefore, as the shutter rises, the stopper body is centered around the spindle at the locking portions of the left and right lock bars. The shutter can be easily pushed up and rotated in the exit direction, allowing the shutter to be opened easily. In this case, the lock of the stopper body is released by the upward suction of the plunger of the solenoid, so a large upward load is not applied to the stopper body, and the locking part of the lock bar and the stopper body are locked. There is no pressure contact and frictional connection with the surface, and there is no unreasonable vertical load, unlike when a solenoid plunger moves horizontally. Rotation can be removed smoothly and reliably.

Furthermore, since the lock bar has an operating lever that allows each locking part to retreat from the left and right guide rails against a spring, the shutter can be easily unlocked by manually operating the operating lever while the shutter is locked. This allows the shutter to be opened in the event of a power outage or other unforeseen circumstances such as when the solenoid becomes inoperable. In addition, in a structure where the stopper body is pulled by a wire, the pulling operation of the stopper body becomes uncertain when the shutter is opened, or a situation may occur where the wire stretches and the removal operation of the stopper body becomes impossible. do not have.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; Fig. 1 is a front view of the shutter device, Fig. 2 is an exploded perspective view with a part of the guide rail and its mounting structure cut away;
Fig. 3 is a sectional view of one side of the locking mechanism, Fig. 4 is a sectional view of the other side of the same, Fig. 5 is a perspective view of the locking and releasing mechanism of the stopper body, and Fig. 6 is a front view of the unlocking mechanism of the lock bar. 7 to 9 are cross-sectional views of other embodiments of the locking mechanism. 2...Guide rail, 6...Shutter, 11
...Operation lever, 20...Lock bar, 26...
Locking portion, 27... Spring, 39... Stopper body, 42... Guide diagonal piece, 43... Locking piece, 45
... Spring, 63, 92 ... Interlocking body, 72 ...
...Solenoid, 73...Plunger.

Claims (1)

[Claim for Utility Model Registration] Guide rails erected facing each other on the left and right sides, and a balance spring installed between the left and right guide rails that can be opened and closed in the vertical direction to balance the weight of the slat on the winding shaft. A shutter that is wound and unwound, and a locking portion provided at the lower part of both sides of the shutter so as to be able to move forward and backward in the left and right direction, and that is biased in a direction so that the locking portions formed at the respective tips are always projected into the left and right guide rails. a lock bar having a spring and an operation lever for retracting the respective locking portions from the left and right guide rails against the spring; a guide slope for guiding the locking portion of the lock bar at the upper portion thereof, and a locking surface for locking the locking portion at the lower portion;
The left and right stopper bodies are always energized in the direction of protruding into the left and right guide rails, and the vertical direction is connected to the lower end of the plunger, which is fixed above the left and right stopper bodies and is attracted by the excitation operation. A shutter device comprising: a solenoid that locks a stopper body in a protruding state within each guide rail via a movable interlocking body, and releases the lock.