JPH063100Y2 - Shutter lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a shutter lock device, in which the shutter is automatically locked by lowering and closing the shutter.

(Prior Art) Conventionally, as this type of shutter lock device, for example, as described in Japanese Utility Model Publication No. 58-36,752, a guide slope for guiding a key bar of the shutter near the lower end of the rear surface of the guide rail. And a claw plate having a locking surface for locking the key bar is rotatably pivoted by a support shaft, and the claw plate is projected into the guide rail by a compression spring, and one end of the claw plate is attached. A structure is known in which the other end of the locked wire is fixed to a plunger of a solenoid provided on the upper rear portion of the claw plate, and the middle of the wire is suspended by a guide pulley that guides the wire in an L shape. There is.

Further, as disclosed in Japanese Utility Model Laid-Open No. 62-196868, a lock bar having a locking portion projecting into a guide rail for guiding the shutter is provided at the lower left and right sides of the spring-balanced shutter. Provided is a rotatable stopper body having a guide slope for guiding the locking portion of the lock bar in the lower portion of the guide rail and an engaging surface for locking the locking portion of the lock bar in the lower portion. There is known a structure in which a solenoid is connected to an interlocking body that is provided and is moved up and down by the rotation of the stopper body via a vertically movable operation frame that is biased by a spring.

Further, as described in Japanese Utility Model Application Laid-Open No. 59-57668, a bifurcated member is rotatably supported by a pivot shaft on the lower end of the shutter rail. In the direction in which a blocking protrusion that blocks the latch bar and a driven protrusion that is pushed by the latch bar are formed, and a rack is formed on the upper portion, and the driven protrusion is always projected into the shutter rail on the bifurcated member. A tension coil spring is urged to the camshaft, and a gear shaft meshing with the rack and a cam plate having a step on the edge are fixed to the cam shaft disposed above the bifurcated member, and the edge of the cam plate is fixed. Also, a structure is known in which a solenoid having a cam follower that engages and disengages from a step is arranged.

(Problems to be solved by the invention) According to the structure disclosed in Japanese Utility Model Publication No. 58-37652, a claw plate that is pulled by a solenoid through a guide pulley to project into a guide rail is used as a compression spring. In this case, the claw plate is pulled out of the guide rail to pass through the key bar of the shutter, but in this case, the claw plate is pulled and rotated downward, and at the same time the shutter rises. Therefore, the key bar of the shutter may be pressed against the engaging surface of the lower surface of the claw plate more than necessary and frictionally coupled.In such a case, depending on the pulling force of the solenoid plunger, the biasing force of the compression spring may not be applied. In some cases, the claw plate and the key bar may be frictionally coupled with each other, and the claw plate may not be pulled in the exit direction, so that the lock of the key bar may not be released.

Therefore, it is conceivable to increase the vertical dimension of the claw plate to facilitate the unlocking.
This causes a problem that the entire locking device becomes large and it is not possible to meet the demand for space saving. It is also conceivable to increase the traction force of the claw plate, but in this case a large solenoid having a large stroke is required, which causes a problem that it cannot meet the demand for space saving.

Further, since the wire may expand depending on the frequency of use, in such a case, there is a possibility that play occurs in the wire and the pulling operation of the claw plate becomes uncertain, and the shutter cannot be opened.

Further, in the case where the spring balance shutter is electrically opened and closed as in the structure described in Japanese Utility Model Laid-Open No. 62-196868, the output of the electric motor has a force enough to cancel the torque of the winding spring and the shutter is released. The closing action of the shutter almost always descends due to the weight of the shutter. Therefore, when the small opening or the weight of the shutter is small, it is difficult to push the stopper body back with the lock bar of the shutter, and the shutter is automatically released. Sometimes you can't lock it.

Therefore, it is conceivable to increase the vertical dimension of the stopper body and increase the slope of the guide slope, but this makes the stopper body larger as a whole and the lock device becomes larger in size. There is a problem that it is not possible to meet the demand for space saving.

Further, in the structure disclosed in Japanese Utility Model Laid-Open No. 59-57668, when the driven projection of the fork member is pushed downward, the fork member is rotated about the pivot shaft against the tension coil spring. And the blocking protrusion is projected into the shutter rail, and the gear is rotated by the rack of the bifurcated member, and the edge of the cam plate coaxial with the gear is rotated while engaging with the cam follower. When the cam follower is moved, the cam follower drops and fits in the step at the edge of the cam plate to lock the rotation of the cam plate, and the bifurcated member is locked with the blocking projection protruding into the shutter rail. , For example, if the driven projection of the fork member is pushed downward by a rod-shaped member such as a driver when the shutter is open, the blocking projection of the fork member may cause While protruding inside The shutter cannot be closed by this blocking protrusion, and the shutter or the lock mechanism may be destroyed. The structure is complicated because of the large number of parts and it is not preferable in terms of parts management and cost. There's a problem.

Therefore, the present invention has been made in view of such a problem, and reliably controls the rotation of the stopper body for the shutter lock that appears and disappears with respect to the guide portion that guides the up and down movement of the shutter according to the up and down direction of the shutter. With this stopper body, the shutter can be locked and unlocked smoothly and reliably, and an unexpected situation in which the stopper body is pushed up and rotated when the shutter is open may occur. The shutter lock device can be easily closed at all times, the shutter or stopper body is not destroyed, the number of parts is small, the structure is simple, and space-saving requirements can be met. The purpose is to do.

(Means for Solving the Problems) A shutter lock device according to the present invention includes a guide rail having a vertical guide portion for guiding up and down movement of a shutter, and a horizontal portion of the guide rail which is located near a lower end of the guide portion. Up and down arranged in the shape of a circle, and pivoted in the vertical direction with one of the support shafts as the center of rotation and the other support shaft as a guide depending on the rotation direction supported by the upper and lower support shafts. A free shutter lock stopper body, a spring wound around the upper and lower support shafts and biasing the stopper body in such a direction as to always project the stopper body into the guide portion of the shutter, and a lower end provided above the stopper body. A solenoid having a vertically movable locking member that engages with and disengages from a stopper body that is projected into the guide portion.

(Operation) In the shutter lock device of the present invention, when the shutter is closed, when the shutter is lowered, the shutter is guided by the guide portions of the left and right guide rails and is gradually lowered. The left and right stopper bodies are pushed downward by the left and right end portions of the left and right stopper bodies, and the left and right stopper bodies rotate the upper support shaft against the spring. Also, the lower support shaft is used as a guide to rotate rearward and downward to retract and retract from the guide portion. Then, the shutter is further lowered and passes through the left and right stopper bodies, and the stopper body is returned and rotated by the return force of the spring with the upper support shaft as a rotation center and the lower support shaft as a guide. It is automatically projected into the guide again. As a result, the shutter is automatically locked by the stopper body.

Next, when the shutter is opened, when the solenoid is energized, the plunger is raised and the locking tool at the lower end of the plunger is pulled up to release the rotation lock of the stopper body. Then, the shutter is lifted along the left and right guide portions, and when the left and right end portions of the lower end portion of the shutter are locked by the left and right stopper bodies, the left and right stopper bodies resist the spring at the left and right end portions. Then, the lower support shaft is pivoted upward and the upper support shaft is used as a guide to pivot upward and retract and retract from the guide portion. Then, as the shutter passes through the further raised left and right stopper bodies, the left and right stopper bodies are returned by the return force of the spring with the lower support shaft as the center of rotation and the upper support shaft as a guide. It is moved and automatically re-projected into the guide.
Further, the shutter is fully opened, the energization to the solenoid is cut off, the plunger is automatically lowered, and the locking tool at the lower end of the shutter again engages with the stopper body to rotate the stopper body upward. Locked to never.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIGS. 1 to 5, reference numeral 1 is a guide rail which is erected upright relative to the left and right, and the left and right guide rails 1 are provided with a guide portion 2 which is opened facing the inner side in the vertical direction. U-shaped rail frame 3 formed on this and this rail frame 3
A seal member configured by an outer frame 4 fixed to the rear side portion, and sealing the front and rear surface portions near the left and right ends of the shutter, which will be described later, at the front and rear portions of the opening in the guide portion 2 of the left and right rail frames 3. 5 are fixed to each other in the vertical direction, and a lock device 6 is provided in the vicinity of the lower ends of the left and right outer frames 4.
Is fixed.

The lock device 6 has a main body case 7 formed to extend in the vertical direction and a cover body 7 a that closes the opening side of the main body case 7. A chamber 8, a locking device accommodating chamber 9 and a stopper accommodating chamber 10 are formed. A solenoid 11 is fitted and locked in the solenoid housing chamber 8 via a support frame 12,
The lower portion of the plunger 13 of the solenoid 11 is projected into the locking tool accommodating chamber 9, and the plunger 13
A spring 16 is wound around the plunger 13 between the flange 14 and the bottom plate 15 of the support frame 12. And
The solenoid 11 is energized to raise the plunger 13 when the shutter is opened, which will be described later.

Further, the locking tool 17 is accommodated in the locking tool housing chamber 9 so as to be vertically movable, and the locking tool 17 has a mounting portion 18 formed on an upper portion thereof, and a mounting portion 18 has a lower portion on one side thereof. A step portion 21 that is engaged with an engagement upper surface 20 of a projection 19 that is projected between one side portion between the locking tool accommodating chamber 9 and the stopper accommodating chamber 10 is formed horizontally. Further, a locking portion 22 that vertically moves in the stopper accommodating chamber 10 along the protrusion 19 is vertically formed in the lower portion of the locking member 17, and one side surface portion of the locking portion 22 is formed. A rib-shaped guide 23 that slides on the projection 19 and the surface portion 9a facing the projection 19 is formed at the middle portion and the lower end portion of the other side surface portion. Then, the mounting portion 18 on the upper part of the locking tool 17
Is fixed to the lower end portion of the plunger 13, and the lower engaging portion 22 of the engaging member 17 projects into the upper rear portion of the stopper accommodating portion 10.

Further, the main body case 7 in the stopper accommodating chamber 10
On the inner wall surface on the side, an arc-shaped guide groove 24 is formed in the upper part from one side to the other side, and this guide groove is formed.
A bearing recess 25 is formed in the lower part of one side of 24. A guide groove 24a facing the guide groove 24 and a bearing recess 25a facing the bearing recess 25 are formed on the inner wall surface of the cover 7a in the stopper housing chamber 10. Then, in the stopper accommodating chamber 10, the stopper body 26 is interposed between the guide concave grooves 24, 24a and the bearing concave portions 25, 25a facing each other via the upper and lower support shafts 27, 28 which are horizontally arranged. The rail frame 3 is pivotally supported in the guide portion 2 so as to be rotatable in and out.

The stopper body 26 is integrally formed with a guide plate 30 that gradually expands toward the rail frame 3 side from the upper portion to the lower portion between the front edge portions of the opposite left and right side plates 29. The stop 31 is formed horizontally, and the left and right side plates 29 are
An engaging portion 29a is formed vertically on the rear side edge portion of the engaging member 17 to engage and disengage the engaging portion 22 formed on the lower side of the engaging member 17.
Further, an insertion hole 32 through which the upper support shaft 27 is rotatably inserted is formed in communication with the upper portions of the opposing left and right side frames 29, and lower portions of the opposing left and right side frames 29 are formed. An arc-shaped guide groove 33, which is inserted through the lower support shaft 28, is formed in substantially the same shape as the guide groove 24 from one side portion to the other side portion. Further, a toggle spring 34 is wound as a common spring on the upper and lower support shafts 27, 28, and one end 34a of the toggle spring 34 is locked to the bottom surface portion 35 of the stopper accommodating chamber 10. The other end 34b of the toggle spring 34 is locked to the back surface of the guide plate 30 of the stopper body 26. The toggle spring 34 causes the stopper body 26 to normally move around the upper support shaft 27 in the second position with the engagement portion 29a of the stopper body 26 engaged with the engagement portion 22 of the engagement tool 17.
The guide plate 30 is urged to rotate clockwise in the drawing, and the guide plate 30 thereof projects into the guide portion 2 of the rail frame 3.
The reference numeral 36 designates a plurality of screws that fix the cover body 7a to the main body case 7.

Next, the lower ends of the left and right guide rails 1 are vertically supported on both ends of the lower frame 37 in the lengthwise direction, and a shutter box is provided between the upper ends of the left and right guide rails 1.
38 is fixed in series, and a winding drum (not shown) is rotatably provided horizontally in the shutter box 38. A shutter 40 having a large number of slats 39 connected to the winding drum is rewritably wound. A skirting board 41 is connected to a slat 39 at the lower end of the shutter 40, and a guide plate 30 and a locking portion 31 of the left and right stopper bodies 26 are connected to the lower end of the skirting board 41.
A guide locking portion 42 that is engaged with and disengaged from is formed. Both ends of the shutter 40 are inserted into the guide portions 2 of the rail frames 3 of the left and right guide rails 1, and the shutter 40 can be opened and closed by being guided by the left and right guide portions 2. There is.

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

First, when closing the shutter 40, when the winding drum in the shutter box 38 is rotated in the direction in which the shutter 40 is rewound, the left and right ends of the shutter 40 of the rail frame 3 of the left and right guide rails 1 are formed. It is guided by the guide unit 2 and gradually descends. The left and right ends of the guide locking portion 42 of the skirting board 41 at the lower end of the shutter 40 abut the guide plates 30 of the stopper bodies 26 of the left and right locking devices 6, and the left and right sides of the guide locking portion 42. With both ends, the guide plate 30 is pushed along the inclined surface,
The left and right stopper bodies 26 rotate counterclockwise in FIG. 2 with the upper support shaft 27 as the center of rotation against the toggle spring 34 and via the lower support shaft 28 and the arc-shaped guide groove 33. It is moved and retracted from within the guide portion 2 of the rail frame 3 and retracted into the stopper accommodating portion 10. Then, the shutter 40 is further lowered, the guide locking portion 42 of the skirting board 41 passes through the guide plate 30 of the stopper body 26, and the stopper body 26 moves the upper support shaft 27 by the restoring force of the toggle spring 34. As the center of rotation, it is returned and rotated in the clockwise direction in FIG. 2 via the lower support shaft 28 and the arc-shaped guide groove 33, and automatically protrudes again into the guide portion 2 of the rail frame 3. As a result, the stopper body 26 is projected above the guide locking portion 42 of the skirting board 41 of the shutter 40, and the stopper body 26 is rotated clockwise by the locking tool 17 of the solenoid 11 in FIG. Since the movement is locked, even if the guide locking portion 42 operates in the upward direction, the guide locking portion 42 is locked by the locking portion 31 of the stopper body 26 to prevent the upward movement, and therefore the shutter 40 is automatically moved by the stopper body 26. Locked.

Next, when opening the shutter 40, the solenoid
When electricity is applied to 11, the plunger 13 is lifted up against the coil spring 16, the locking tool 17 at the lower end of the plunger 13 is pulled up, and the locking part of the locking tool 17 is pulled up.
22 is separated from the engaging portion 29a at the rear of the stopper body 26,
The rotation lock of the stopper body 26 by the locking tool 17 is released. When the winding drum is rotated in the winding direction of the shutter 40, the shutter 40 is raised along the guide portions 2 of the rail frames 3 of the left and right guide rails 1 and the skirting body 41 of the shutter 40 is moved. Guide locking part 42
When the left and right ends of the guide are locked to the locking parts 31 of the left and right stopper bodies 26, the left and right ends of the guide locking part 42 cause the left and right stopper bodies 26 to engage with the toggle spring 34 through the locking parts 31. In the guide portion 2 of the rail frame 3 by rotating the lower support shaft 28 as the center of rotation and rotating clockwise in FIG. 5 via the upper support shaft 27 and the arc-shaped guide groove 24. It is retracted from and retracted into the stopper accommodating portion 10.

Then, the shutter 40 is further raised, the guide locking portion 42 of the skirting board 41 passes through the locking portion 31 of the stopper body 26, and the stopper body 26 is moved downward by the restoring force of the toggle spring 34. With the center of rotation as the pivot
It is returned and rotated in the counterclockwise direction in FIG. 5 via the guide groove 27 and the arc-shaped guide groove 24, and automatically protrudes again into the guide portion 2 of the rail frame 3. Also, the shutter 40 is wound and fully opened, and the solenoid 11 is de-energized and the plunger 40
13 is automatically lowered by the restoring force of the coil spring 16, the locking portion 22 of the locking tool 17 at the lower end is locked again by the engaging portion 29a of the stopper body 26, and the stopper body 26 is set to the timepiece shown in FIG. It is locked so that it cannot rotate in any direction.

Next, in the embodiment shown in FIG. 6 to FIG. 9, in the above embodiment, the skirting board 41 of the shutter 40 is manually locked by the stopper bodies 26 of the left and right electric lock devices 6. The device 50 is provided. That is, as shown in FIGS. 6 and 7, the intermediate portion of the operation lever 52 is left and right via the support shaft 51 in the intermediate portion in the lateral accommodation recess 41a formed in the inner portion of the skirting body 41. Is rotatably pivoted in a direction, and an interlocking shaft 53 is vertically projected from the lower end portion of the operating lever 52 and above the mounting portion for the support shaft 51 at the same interval with respect to the support shaft 51. The inner ends of the left and right interlocking plates 54 that move forward and backward in the left-right direction are connected to the upper and lower interlocking shafts 53 through long grooves 55 formed in the respective interlocking plates 54.

Further, the outer portions of the left and right interlocking plates 54 are inserted in the guide grooves 57 between the locking and retaining metal fittings 56 fixed to the left and right and up and down of the housing recess 41a so as to be able to move back and forth in the left and right direction, Locking step portions 59 that lock the upper and lower sides of the outer end portions 58 of the left and right interlocking plates 54 are formed opposite to each other on the upper and lower surfaces of the locking metal fittings 56. The inner ends of the lock bars 60 are integrally connected, and the guide locking portions are provided at the outer ends, that is, the tips of the left and right lock bars 60.
61 are formed. Furthermore, the left and right interlocking plates
Coil springs 62 are stretched between a portion of the groove 54 near the long groove 55 and the locking fitting 56. The urging force of the coil spring 62 causes the operation lever 52 to be pivotally tilted to one side about the support shaft 51, and the left and right lock bars 60 via the left and right interlocking plates 54.
Is pushed outward, and the guide locking portion 61 at the tip thereof is always projected into the guide portion 2 of the rail frame 3 of the guide rail 1.

With this configuration, as in the case of the above-described embodiment, when the shutter 40 descends, the guide locking portions 61 of the left and right lock bars 60 of the skirting board 41 push the guide plate 30 of the stopper body 26. The stopper body 26 is rotated clockwise in FIG. 8 to allow the guide locking portions 61 of the left and right lock bars 60 to descend, and the left and right guide locking portions 61 pass through the left and right stopper bodies 26. At the same time, as in the case of the above-described embodiment, the left and right stopper bodies 26 are automatically returned and rotated, and the left and right lock bars are
The guide locking portion 61 of 60 is locked by the locking portion 31 of the stopper body 26. As a result, the closed shutter 40 is automatically locked.

When the shutter 40 is to be lifted and released, the shutter 40 can be easily lifted and opened by unlocking the stopper 26 as in the case of the above-described embodiment.

Next, in the fully closed state where the shutter 40 is lowered, for example, when it is necessary to open the shutter 40 in an emergency when the left and right solenoids 11 cannot be energized such as during a power failure,
Manually pivot the operating lever 52 at the inner middle of the skirting body 41.
When it is rotated about 51, the left and right interlocking plates 54 attached to the upper and lower interlocking shafts 53 of the operating lever 52 are pulled and interlocked respectively against the coil springs 62, and the left and right interlocking plates 54 are also interlocked. The left and right lock bars 60 that are fixed to the left and right lock bars are also towed inward.
The guide locking portion 61 at the tip of the 60 is withdrawn from the guide portion 2 of the rail frame 3, the guide portions 2 of the left and right rail frames 3 are opened,
Therefore, the lock of the shutter 40 is released, and the shutter 40 can be easily pulled up and opened.

[Effect of device]

According to the present invention, upper and lower support shafts are horizontally arranged in the vicinity of the lower end of the guide part, and a shutter lock stopper body is supported on the upper and lower support shafts. With the support shaft as a center of rotation and the other support shaft as a guide, the support shaft is rotatable, and a spring for urging the stopper body in a direction to constantly project the stopper body into the guide portion is wound around the stopper shaft. Since a solenoid having a vertically movable locking member that engages and disengages with respect to the stopper body protruding into the guide portion is provided in the upper portion of the body,
In the normal state, the stopper body that is projected into the guide section by the solenoid locking device can surely be prevented from ascending and pivoting around the lower support shaft, and an unexpected situation occurs in which the stopper body is pushed up and rotated. Even if the stopper body is not rotated upward about the lower support shaft, the stopper body can be maintained in a state of being rotated downward about the upper support shaft that guides the lowering of the shutter. Or because the stopper body is not destroyed, for this reason,
When the shutter is closed, the stopper body is rotated around the upper support shaft by the shutter and in the direction of retracting from the guide portion using the lower support shaft as a guide, and therefore the shutter can be closed reliably. With
The shutter can be reliably locked by the stopper body that is rotated and returned to the guide portion by the spring.

Also, when the stopper is raised to unlock the stopper body and the shutter is opened, the push-up rotation with respect to the stopper body is released, and the stopper body is centered on the lower support shaft by the spring. As a result, the shutter can be automatically returned to the inside of the guide and rotated to be prepared for the closing lock of the shutter.

Further, since the stopper body is rotatably supported by the upper and lower support shafts and the spring, and the stopper body is directly controlled by the solenoid, the number of parts is small and the structure is simple, which is preferable in terms of parts management and cost. , Can meet the demand for space saving.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front view of a shutter device, FIG. 2 is a sectional view taken along line a-a of the same, and FIG. 3 is a sectional view taken along line b-b of the same. FIG. 4 is an exploded perspective view of the same locking device, FIG. 5 is a cross-sectional view showing the operating state of the same stopper body, and FIGS. 6 to 9 show other embodiments. FIG. 7 is a front view of the shutter device, FIG. 7 is a front view in which a part of the manual lock device is cut away, FIG. 8 is a cross-sectional view taken along line c-c of FIG. 6, and FIG. 9 shows an operating state of the stopper body. FIG. 1 ... Guide rail, 2 ... Guide part, 11 ... Solenoid, 17 ...
Locking tool, 26 ... stopper body, 27, 28 ... spindle, 34 ... spring, 40 ... shutter.

Claims (1)

[Scope of utility model registration request] 1. A guide rail having a vertical guide portion for guiding up and down movement of a shutter, and upper and lower support shafts which are respectively disposed horizontally near the lower end of the guide portion of the guide rail. A stopper body for the shutter lock, which is supported on the upper and lower support shafts and is rotatable in the vertical direction with one of the support shafts as a center of rotation depending on the rotating direction and the other support shaft as a guide, and the upper and lower support shafts. A spring that is wound around a support shaft to urge the stopper body in a direction to always project the stopper body into the guide portion of the shutter, and a stopper body that is provided at an upper portion of the stopper body and projects into the guide portion at a lower end portion thereof. A shutter lock device, comprising: a solenoid having a vertically movable locking / disengaging device that engages with and disengages from the shutter lock device.