JP2008231670A - Operation confirmation device of shutter water pressure release apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation confirmation device of a water pressure release apparatus, which enables the visual confirmation of the operation of the water pressure release apparatus without sacrificing crime prevention. <P>SOLUTION: This water pressure release apparatus comprises: a water injection port 10 which is formed in a slat 40; a casing 8 which is provided on the indoor side of the slat 40 in the state of communicating with the water injection port 10; an unlocking shaft 9 which is subjected to the release of restrictions on protrusion by water injection, so as to protrude from the casing 8 and perform unlocking; and an operation mechanism which is internally mounted in the casing 8 so as to release the restrictions on the protrusion of the unlocking shaft 9 by water injection. The operation mechanism has a movable element which is moved to the side of a lock body by water injection, and an unlocking marker M is provided in the movable element or an extension portion which is provided in the movable element. In the slat 40, an operation confirmation hole H is formed in a position to enable the visual recognition of the unlocking marker M of the movable element which is moved until it is put into an unlocked state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a water pressure releasing device for a shutter, and more particularly to a device for confirming the operation of a water pressure releasing device for a shutter.

For security reasons, the shutter device is provided with a shutter lock, and the opening of the shutter curtain is restricted by locking the shutter device in the fully closed state. In order to open the shutter device in the locked state from the outside, a key to unlock the shutter lock is required, but in the event of an emergency such as a fire, the shutter lock is unlocked with water pressure to release the shutter curtain. The device is known. Patent Document 1 states that “an actuating member that operates a cylinder lock by water pressure to a shutter inner / outer lock that unlocks and locks the shutter by a pair of racks that protrude and retract on both sides of the apparatus by a key operation of the cylinder lock or a manual operation from the inside of the shutter. A hydraulic pressure unlocking device comprising a hydraulic pressure unlocking device connected to the hydraulic pressure unlocking device, and a hydraulic pressure receiving plate having a vertical pressure receiving surface for receiving the water pressure and fitted in the hydraulic pressure unlocking device so as to be horizontally movable. A plurality of operating shafts having one end fixed to the plate and the other end extending horizontally to the cylinder lock side, and a locking portion fixed to the hydraulic unlocking device and provided on the operating shaft, are fitted into the operating shaft. A holding tool having a steel ball that can be protruded inward and outward to prevent movement by a predetermined amount, and a locking part that is fitted horizontally into the holding tool and fits into the steel ball, and is always on the cylinder lock side. Energizing pressure spring Provided with an unlocking shaft for operating the cylinder lock operating member by moving horizontally to the cylinder lock side when the steel ball protrudes and moves to the locking portion of the operating shaft, and the fitting state is released. In addition, a shutter inner and outer lock with a hydraulic unlocking device is described.

Although the hydraulic unlocking device described in Patent Document 1 has the advantage that the shutter lock can be unlocked reliably and quickly, there is no way of knowing whether the shutter lock has been unlocked by water pressure, and the shutter is actually released. It can be seen that the shutter lock is unlocked when the curtain is opened. Therefore, if the shutter curtain cannot be opened by the opening operation after a predetermined amount of water has been injected, it is necessary to perform water injection again, and even after the shutter lock is unlocked, unnecessary water injection continues. Sometimes work is done. These operations are time-consuming for emergency work such as fire fighting, and there is a risk of hindering rapid fire fighting.

Patent Document 2 states that “a shutter having a water injection / unlocking mechanism that slides a latch bar in the unlocking direction by water injection pressure from a water injection port opened in the shutter curtain. The portion corresponding to the latch bar or its interlocking member (link)” Is equipped with a display window, and the latch bar or its interlocking member (link) is provided with a “water injection / unlocking confirmation device with an unlocking mark corresponding to the display window”, which enables visual unlocking confirmation. . However, the latch bar and the link are members directly related to the unlocking of the shutter lock, and it is disadvantageous for crime prevention that the latch bar and the link can be directly accessed from the outside through the opening.
Reality 4-31956 (Akisho 63-81169) Shokai 60-37561

An object of the present invention is to provide an operation confirmation device for a water pressure release device that can visually confirm the operation of the water pressure release device without sacrificing crime prevention performance.

The technical means employed by the present invention in order to achieve such a problem are a water inlet formed in the shutter curtain, a casing provided on the indoor side of the shutter curtain, and the water inlet and the internal space communicating with each other, and a casing In the operation confirmation device for the shutter hydraulic pressure release device, the unlocking shaft comprising: an unlocking shaft that protrudes from the shutter and unlocks the operating portion of the lock body of the shutter lock, and an operating mechanism built in the casing. Is urged to the lock body side and is normally restricted from projecting to the lock body side, and the operation mechanism releases the regulation of the unlocking shaft by water injection from the water injection port. The actuating mechanism has a movable element that moves to the lock body side by water injection, and is provided with an unlocking mark on the movable element or an extension provided in the movable element, The serial shutter curtain, in a position visible to unlock indicator of the movable element or the extending portion which has moved to the unlocked state, to form a working confirmation hole, operation confirmation device hydraulic opening device is. When the shutter curtain is formed by connecting a plurality of slats vertically, the water injection port and the operation confirmation hole are formed in a predetermined slat. When the shutter curtain is formed by connecting a plurality of panels in the vertical direction, the water inlet and the operation confirmation hole are formed in a predetermined panel.

In one embodiment, the operating mechanism includes a hydraulic pressure receiving plate that can be moved to the lock body by water injection, a proximal end fixed to the hydraulic pressure receiving plate, and a distal end located on the lock body side. And an operating shaft that moves in the horizontal direction toward the lock body, and a retainer provided between the peripheral surface of the unlocking shaft and the peripheral surface of the operating shaft. It is fitted in a fitting recess formed on the peripheral surface of the shaft, and is configured so that the engagement with the fitting recess is released by the movement of the operating shaft to the lock body side and the protruding restriction state is released. And the movable element provided with the release mark is the operating shaft.

In a more specific configuration, a water injection space communicating with the water injection port is provided inside the casing, and a water pressure receiving plate that moves to the lock body side by water injection is provided in the water injection space. A support plate is provided on the lock body side of the hydraulic pressure receiving plate, a spring receiving plate is provided on the lock body side of the support plate, and a space is formed on the lock body side of the spring receiving plate. The base end of the operating shaft is fixed to the hydraulic pressure receiving plate, the intermediate portion is inserted through the support plate, the tip is inserted through the spring receiving plate, and the operating shaft moves toward the lock body as the hydraulic pressure receiving plate moves. Move horizontally. A spring is provided on the operating shaft between the hydraulic pressure receiving plate and the support plate. The tip of the unlocking shaft is provided with an abutting portion having a larger diameter than the shaft portion of the unlocking shaft, and is located in the space on the lock body side of the spring receiving plate between the spring receiving plate and the abutting portion. A pressing spring is externally provided. The steel ball and the holder are provided between the support plate and the spring receiving plate, and the unlocking shaft passes through the holder. A fitting recess is formed on the peripheral surface of the operating shaft between the support plate and the spring receiving plate, and the steel ball is fitted into the fitting recess by moving the operating shaft to the lock body side. Thus, the engagement state between the fitting recess of the unlocking shaft and the steel ball is released, and the unlocking shaft protrudes toward the lock body by the biasing force of the pressing spring.

In one aspect, the unlocking mark is provided at the distal end portion of the operating shaft or an extending portion provided at the distal end portion so as to extend toward the lock body. In another aspect, the unlocking mark is located between the support plate and the spring receiving plate and is provided on the operating shaft (for example, the fitting recess). Further, when there are a plurality of operating shafts, the unlocking mark may be provided on at least one operating shaft. In still another aspect, the operation shaft or the extension portion is not visible from the operation confirmation hole in the locked state.

In the present invention, it is possible to visually confirm the operation of the hydraulic pressure release device, eliminate the time loss required for the confirmation work of whether or not the shutter lock is unlocked, and shorten the time required for fire fighting activities. In the present invention, since the unlocking mark provided on the movable element of the operating mechanism for releasing the unlocking shaft protrusion restriction is visually confirmed from the work confirmation hole, even if the movable element is accessed from the work confirmation hole, the patent Compared with the case of directly accessing the latch bar and link in Document 2, it is difficult to perform the unlocking operation, which is advantageous in terms of crime prevention.

In the case where the unlocking mark is provided on the operating shaft extending to the lock body side from the hydraulic pressure receiving plate, water does not enter the part where the operating shaft extends, so the deterioration of the unlocking mark should be reduced. Can do. Furthermore, in the case where the unlocking mark is provided at the tip of the working shaft or the extension provided at the tip of the working shaft, it is difficult to grab and move the working shaft from the work confirmation hole, It is advantageous for crime prevention. Moreover, it is more advantageous in terms of crime prevention if the operating shaft or the extension portion is not visible from the operation confirmation hole in the locked state.

[A] Shutter Device FIG. 1 is a front view on the outdoor side of the shutter device, and FIG. 2 is a front view on the indoor side of the shutter device. The shutter device includes a guide rail 1 erected on the left and right sides of the opening, a shutter case 2 provided above the opening, a winding shaft 3 extending in the opening width direction in the shutter case 2, and a winding shaft 3. A shutter curtain 4 which is wound up to open the opening and is drawn out from the winding shaft 3 to close the opening. The shutter curtain 4 is configured by vertically connecting a plurality of long slats 40 extending in the opening width direction. The upper end of the shutter curtain 4 is connected to the winding shaft 3 and the lower end is a seat plate. 5 is provided.

A shutter lock 6 is provided on the indoor side of the slat 40 at a predetermined position in the opening height direction. The shutter lock 6 includes a lock body (cylinder lock) 6A, an operation unit 60 provided on the indoor side of the lock body 6A, and a key hole 61 provided on the outdoor side of the lock body 6A. The shutter lock 6 further includes an end portion of a rod 62 that extends in the length direction of the slat 40 by a rotation operation of the operation unit 60 on the indoor side or a rotation operation by inserting a key into the key hole 61 on the outdoor side. The latching | locking part 63 which protrudes from is provided. Such a shutter lock 6 is well known in the industry and will not be described in detail. The lock body 6A of the shutter lock 6 is further provided with an operating body 64 for unlocking the shutter lock 6 in an emergency. The operating body 64 is unlocked by moving in the direction of the arrow (FIG. 3A). The lock is done.

[B] The slat 40 provided with the water pressure release device shutter lock 6 is further provided with a water pressure release device 7, and in the event of an emergency, water is injected from the outdoor side to the water pressure release device 7, so Therefore, the shutter lock 6 can be unlocked. The water pressure releasing device 7 is provided on the indoor side of the slat 40 in the slat 40, the casing 8 in which the water inlet 10 communicates with the internal space, and protrudes from the casing 8 toward the working body 64. The unlocking shaft 9 that unlocks the actuating body 64 by pushing in the actuating body 64 and the actuating mechanism that actuates the unlocking shaft 9 by pouring water from the water filling port 10, and the components of the actuating mechanism are housed in the casing 8. . The water inlet 10 is provided with a dustproof net.

As shown in FIG. 4, the casing 8 includes an outdoor front wall 80, an indoor rear wall 81, an upper wall 82, a lower wall 83, and left and right side walls 84, 85. It has a thin rectangular parallelepiped shape that extends. Attachment bases 80a are extended and formed at both ends of the front wall 80 on the outdoor side, and the casing 8 is attached by bringing the front wall 80 on the outdoor side into contact with the back surface of the slat 40 to which the shutter lock 6 is attached. is there. An opening 10 ′ is formed in the front wall 80 of the casing 8 so as to coincide with the water injection port 10 formed in the slat 40 on one side (side away from the shutter lock 6).

In the casing 8, a partition wall 11 having a circulation hole 11 a is formed in the vicinity of the opening 10 ′. Water injection from the water injection port 10 (opening 10 ′) is performed on the side wall 84, the partition wall 11, and the front and rear walls. 80, 81 and the upper and lower walls 82, 83 enter the first space S1. A hydraulic pressure receiving plate 12 having a U-shaped cross-sectional view is provided on the side of the partition wall 11 on the lock body side (the side away from the side wall 84, that is, the side of the side wall 85). A second space S <b> 2 is formed between the partition wall 11. The first space S1 and the second space S2 are in fluid communication with each other through a circulation hole 11a formed in the partition wall 11, and water supplied to the first space S1 from the water injection port 10 is second from the circulation hole 11a. It is supplied to the space S2. When the second space S2 is filled with water, the hydraulic pressure receiving plate 12 receives water pressure and moves to the lock body side (the side away from the side wall 84, that is, the side wall 85).

To the water pressure receiving plate 12, the base end portions of the two operating shafts 14 are fixed via attachment plates 13. The two actuating shafts 14 extend horizontally in parallel with each other, and an intermediate portion in the length direction is inserted through the support plate 15 and a tip portion thereof is movably inserted through the spring receiving plate 16. Located between the water pressure receiving plate 12 and the support plate 15, a spring 17 is externally mounted on the operating shaft 14, and the water pressure receiving plate 12 is urged toward the partition wall 11 by the spring 17.

The unlocking shaft 9 is located between the two operating shafts 14 and extends in the horizontal direction. The unlocking shaft 9 is inserted through the partition wall 11, the hydraulic pressure receiving plate 12, the support plate 15 and the spring receiving plate 16, and is disposed so as to be movable in the horizontal direction. A cylindrical holder 18 a that holds a steel ball 18 is provided between the support plate 15 and the spring receiving plate 16. The holding tool 18a restricts the movement of the steel ball 18 in the horizontal direction of the unlocking shaft 9 (the length direction of the unlocking shaft 9 and the operating shaft 14), but allows the movement of the holding tool 18a in the circumferential direction. The steel ball 18 is held with play. The unlocking shaft 9 is also inserted through the holder 18a. A part of the steel ball 18 protrudes from the peripheral surface of the holder 18 a, and the steel ball 18 is always in contact between the peripheral surface of the unlocking shaft 9 and the peripheral surface of the operating shaft 14. At the end of the unlocking shaft 9 on the side of the lock main body, a contact portion 90 that contacts the operating body 64 of the shutter lock 6 is provided. On the unlocking shaft 9, a pressing spring 19 is externally provided between a contact portion 90 (having a larger diameter than the shaft portion of the unlocking shaft 9) 90 and the spring receiving plate 16.

On the peripheral surface of the unlocking shaft 9, a concave fitting concave portion 9 a into which the steel ball 18 is fitted so as to be detachable is formed. In the locked state, the steel ball 18 held by the holder 18a is fitted in the fitting recess 9a, and the movement (protrusion) of the unlocking shaft 9 is restricted. The operating shaft 14 is formed with a fitting recess 14 a having a concave peripheral surface at a position between the support plate 15 and the spring receiving plate 16. In the locked state, the fitting recess 14a is positioned closer to the support plate 15, and the fitting recess 14a of the operating shaft 14 and the steel ball 18 are separated and are not fitted.

In the locked state, the contact portion 90 and the operating body 64 are separated from each other. When water is injected from the water inlet 10 in the locked state, the water pressure receiving plate 12 that receives water pressure through the first space S1 and the second space S2 moves horizontally toward the lock body against the urging force of the spring 17, When the operating shaft 14 moves horizontally to the lock body side, the steel ball 18 protrudes and fits into the fitting recess 14a, and the movement of the operating shaft 14 is restricted. At this time, the unlocking shaft 9 is disengaged from the fitting recess 9 a of the unlocking shaft 9 and the steel ball 18 and protrudes from the side wall 85 to the lock body side by the force of the pressing spring 19. The abutting portion 90 abuts against the operating body 64 and is pushed in to unlock the shutter lock 6.

[C] Operation Confirmation Device for Shutter Water Pressure Release Device FIG. 6 shows an embodiment of the operation confirmation device for the water pressure release device 7. 6A shows the operation confirmation device in an inoperative state (locked state), FIG. 6B shows the operation confirmation device in an activated state (unlocked state), and FIG. 6C shows the operation confirmation device in operation. It is the figure which looked at the state which carried out from the outdoor side. A third space S3 is formed in the casing 8 between the spring receiving plate 16 and the side wall 85, and the unlocking shaft 9 extends into the third space S3 in the locked state. An extension portion 20 that extends from the spring receiving plate 16 toward the lock body side into the third space S <b> 3 is provided at the tip of the one operation shaft 14. An unlocking mark M is provided at a predetermined portion of the extending portion 20. An operation confirmation hole H is formed in a predetermined portion of the slat 40 provided with the water pressure release device 7. An opening is formed in the front wall of the casing 8 at a position corresponding to the operation confirmation hole H.

As shown in FIG. 6 (A), when the operation confirmation device is in an inoperative state (locked state), the unlocking mark M provided on the extension portion 20 is positioned on the spring receiving plate 16 side with respect to the operation confirmation hole H. From the operation confirmation hole H, only the tip of the extended portion 20 (without the unlocking mark M) can be seen. As shown in FIG. 6B, in a state where the operation confirmation device is activated (unlocked state), the distal end side of the operating shaft 14 protrudes into the third space S3, and the steel ball 18 is fitted into the fitting recess 14a. In the state, the unlocking mark M provided on the extending portion 20 coincides with the operation confirmation hole H. Therefore, the unlocking mark M can be visually recognized from the operation confirmation hole H, and it can be confirmed that the operation confirmation device is activated and unlocked.

An embodiment similar to the embodiment shown in FIG. 6 is shown in FIGS. FIG. 7 (A ′) shows the operation confirmation device in an inoperative state (locked state), and FIG. 7 (B ′) shows the state in which the operation confirmation device is activated (unlocked state). An extension portion 20 </ b> A extending into the third space S <b> 3 is provided at the distal end portion of one working shaft 14. The extending portion 20A is formed by extending the operating shaft 14 and the end portion. The distal end portion of the extending portion 20A forms an unlocking mark M. An operation confirmation hole H is formed in a predetermined portion of the slat 40 provided with the water pressure release device 7. An opening is formed in the front wall of the casing 8 at a position corresponding to the operation confirmation hole H.

As shown in FIG. 7 (A ′), when the operation confirmation device is in an unactuated state (locked state), the distal end portion of the extension portion 20A is located closer to the spring receiving plate 16 than the operation confirmation hole H. From the operation confirmation hole H, the tip end portion of the extending portion 20A cannot be seen. As shown in FIG. 7 (B ′), when the operation confirmation device is activated (unlocked state), the distal end side of the operating shaft 14 protrudes into the third space S3, and the steel ball 18 is fitted into the fitting recess 14a. In this state, the distal end portion (unlocking mark M) of the extending portion 20A coincides with the operation confirmation hole H. Therefore, the unlocking mark M can be visually recognized from the operation confirmation hole H, and it can be confirmed that the operation confirmation device is activated and unlocked.

Further, an embodiment similar to the embodiment shown in FIG. 6 is shown in FIGS. 7A shows the operation confirmation device in an inoperative state (locked state), FIG. 7B shows the operation confirmation device in an activated state (unlocked state), and FIG. 7C shows the operation confirmation device. It is the figure which looked at the state which acted from the outdoor side. An extension portion 20B that extends into the third space S3 is provided at the end portion of the one operation shaft 14. The extending portion 20B is a cylindrical cover body 20B ′ attached to the distal end portion of the operating shaft 14. The distal end portion of the cover body 20B ′ whose base end portion is attached to the distal end portion of the operating shaft 14 forms an unlocking mark M. An operation confirmation hole H is formed in a predetermined portion of the slat 40 provided with the water pressure release device 7. An opening is formed in the front wall of the casing 8 at a position corresponding to the operation confirmation hole H.

As shown in FIG. 7A, when the operation confirmation device is in an inoperative state (locked state), the distal end portion of the extension portion 20B is located closer to the spring receiving plate 16 than the operation confirmation hole H, From the confirmation hole H, the tip end portion of the cover body 20B ′ constituting the extending portion 20B cannot be seen. As shown in FIG. 7B, in a state where the operation confirmation device is operated (unlocked state), the distal end side of the operating shaft 14 protrudes into the third space S3, and the steel ball 18 is fitted into the fitting recess 14a. In the state, the front end portion (unlocking mark M) of the cover body 20B ′ constituting the extending portion 20B coincides with the operation confirmation hole H. Therefore, the unlocking mark M can be visually recognized from the operation confirmation hole H, and it can be confirmed that the operation confirmation device is activated and unlocked. Although the material of cover body 20B 'is not limited, Resin and metal are illustrated.

Still another embodiment is shown in FIGS. For the details of the components of the hydraulic pressure release device, the description related to FIG. 5 can be used. FIG. 8 shows a state where the operation confirmation device is not activated (locked state), and FIG. 9 shows a state where the operation confirmation device is activated (unlocked state). As shown in FIGS. 8B and 9B, unlocking marks M are formed in the fitting recesses 14a of the two operating shafts 14. The unlocking mark M is formed, for example, by applying a fluorescent paint to the peripheral surface of the fitting recess 14a. As shown in FIG. 8, when the operation confirmation device is not operated (locked state), the unlocking mark M provided in the fitting recess 14 a of the operation shaft 14 is located on the support plate 15 side with respect to the operation confirmation hole H. From the operation confirmation hole H, only the portion of the operation shaft 14 (without the unlocking mark M) can be seen. As shown in FIG. 9, when the operation confirmation device is operated (unlocked state), the operating shaft 14 protrudes into the third space S3, and when the steel ball 18 is fitted in the fitting recess 14a, the operating shaft is The unlocking mark M provided in the 14 fitting recesses 14 a coincides with the operation confirmation hole H. Therefore, the unlocking mark M can be visually recognized from the operation confirmation hole H, and it can be confirmed that the operation confirmation device is activated and unlocked.

As described above, the operation confirmation hole H formed in the slat 40 cannot be viewed from the operation confirmation hole H in the unlocked state, and the unlocking mark from the operation confirmation hole H in the unlocked state. It is formed at a position where M can be visually recognized. The unlocking sign M only needs to be visually identifiable. Specific examples are given below. The presence or absence of coating, for example, the color of the member itself that was visible in the locked state, is identified by the fact that the colored portion is visible in the unlocked state. Alternatively, different colors are identified by, for example, a red portion visible in the unlocked state and a blue portion visible in the unlocked state. Alternatively, the presence / absence of a member, that is, what was visible in the locked state is identified by the visible member in the unlocked state. In this case, it does not matter whether the member is colored or not, but it is desirable that the member is colored with a fluorescent paint or the like.

In the present invention, the unlocking mark M provided on the working shaft 14 which is a movable element of the actuating mechanism for canceling the protrusion restriction of the unlocking shaft 9 or the extension portion 20 formed at the tip of the working shaft 14 is provided from the work confirmation hole H. Since it is to be visually confirmed, even if the operation shaft 14 or the extension part 20 is accessed from the work confirmation hole H, compared to the conventional water injection / unlock confirmation device that can directly access the latch bar and link constituting the shutter lock, Unlocking operation is difficult and advantageous for crime prevention. In particular, when the unlocking mark M is provided in the extending portion 20 formed at the tip of the operating shaft 14, it is difficult to access the operating shaft 14 from the work confirmation hole H, which is more advantageous in terms of crime prevention.

The present invention can be used as an operation confirmation device for a hydraulic pressure release device.

It is an outdoor side front view of a shutter apparatus. It is a room inner side front view of a shutter apparatus. (A) is a view of a slat provided with a shutter lock (at the time of locking) and a hydraulic pressure release device as viewed from the indoor side, and (B) is a partial view of the slat as viewed from the indoor side (similar to the casing). (Only the wall is shown) (C) is a partial view of the slat viewed from the outdoor side. It is a figure which shows the main body of a water pressure releasing device. It is a figure which shows the action | operation mechanism of a hydraulic-pressure releasing apparatus, Comprising: (A) is the time of locking, (B) has shown the time of unlocking. It is a figure which shows the operation | movement confirmation apparatus of a hydraulic-pressure releasing apparatus, Comprising: (A) is the time of locking, (B) is the time of unlocking, (C) is the figure seen from the outdoor side of the slat at the time of unlocking. It is a figure which shows the operation | movement confirmation apparatus of a hydraulic pressure release apparatus, Comprising: (A ') is at the time of locking, (B') is at the time of unlocking, (A) is at the time of locking, (B) is at the time of unlocking, (C) is It is the figure seen from the outdoor side of the slat at the time of unlocking. The operation | movement confirmation apparatus of the hydraulic pressure release apparatus which concerns on other embodiment at the time of locking is shown, (A) is the figure which looked at the slat from the outdoor side, (B) is the figure which looked at the inside of the hydraulic pressure release apparatus from the indoor side. . The operation | movement confirmation apparatus of the hydraulic pressure releasing apparatus which concerns on other embodiment at the time of unlocking is shown, (A) is the figure which looked at the slat from the outdoor side, (B) is the figure which looked at the inside of the hydraulic pressure releasing apparatus from the indoor side. is there.

Explanation of symbols

6 Shutter lock 6A Lock body 64 Actuator 7 Hydraulic release device 8 Casing 9 Unlocking shaft 10 Pouring port 11 Partition wall 12 Water pressure receiving plate 14 Actuating shaft 20 Extension portion 20A Extension portion 20B Extension portion M Unlocking label H Operation Confirmation hole

Claims (4)

A water inlet formed in the shutter curtain, a casing provided on the indoor side of the shutter curtain, and the water inlet and the internal space communicating with each other, and protruding from the casing and pushing the operating portion of the lock body of the shutter lock to unlock In the operation confirmation device of the shutter hydraulic pressure release device comprising the unlocking shaft for performing the operation and the operation mechanism built in the casing,
The unlocking shaft is biased to the lock body side and is normally restricted from projecting to the lock body side, and the operation mechanism restricts the unlocking shaft from projecting by water injection from the water inlet. Configured to release,
The operating mechanism has a movable element that moves to the lock body side by water injection,
An unlocking mark is provided on the movable element or an extension provided on the movable element,
In the shutter curtain, an operation confirmation hole is formed at a position where the movable element moved to the unlocked state or the unlocking mark of the extension portion can be visually confirmed.
Operation confirmation device for water pressure release device. The operating mechanism is:
A hydraulic pressure receiving plate that can be moved to the lock body by water injection;
An operating shaft having a proximal end fixed to the hydraulic pressure receiving plate and a distal end located on the lock body side and moving in the horizontal direction toward the lock body side as the hydraulic pressure receiving plate moves;
It is provided via a holder between the peripheral surface of the unlocking shaft and the peripheral surface of the operating shaft, and is fitted in a fitting recess formed on the peripheral surface of the unlocking shaft in the restricted state of the unlocking shaft. , A steel ball configured to release the fitting restriction state by releasing the fitting with the fitting recess by moving the operating shaft to the lock body side,
Have
The operation check device according to claim 1, wherein the movable element provided with the unlocking mark is the operation shaft.   The operation confirmation device according to claim 2, wherein the unlocking mark is provided at a distal end portion of the operating shaft or an extending portion provided at the distal end portion so as to extend toward the lock body.   The operation check device according to claim 3, wherein the operation shaft or the extension portion is not visible from the operation check hole in a locked state.

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