JP2010057778A - Fire extinguishing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire extinguishing device having a structure with superior design property, having a simple constitution and facilitating a position control of a discharge pipe and retention of the position in discharging. <P>SOLUTION: This fire extinguishing device includes: a circling arm pipe 9 having a proximal end side disposed in a housing and a distal end side circling to emerge/retract with respect to a housing opening section, with the distal end side as a circling axis; a water discharge pipe 13 attached to the distal end side of the circling arm pipe 9 to circle with respect to the circling arm pipe 9; a single motor 21 applying a circling force to the circling arm pipe 9 and the water discharge pipe 13; and a circling-force transmission mechanism transmitting the driving force of the motor 21 to the circling arm pipe 9 and the water discharge pipe 13 and circling the circling arm pipe 9 and the water discharge pipe 13. The circling transmission mechanism includes a first circling-force transmission mechanism for transmitting the driving force of the drive unit to the circling arm pipe 9, and a second circling-force transmission mechanism transmitting the drive force of the drive unit to the water discharge pipe 13, and the first circling force transmission mechanism consists of a worm installed to the rotary shaft of the drive unit, and a worm wheel installed to the circling shaft side of the circling arm pipe. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fire extinguishing apparatus that turns off a water discharge nozzle with respect to a fire that occurs in a monitoring area and directs the water discharge nozzle toward a fire source to discharge water, a fire extinguisher, or the like from the water discharge nozzle and extinguish the fire.

There is a fire extinguishing device that extinguishes a fire that has been generated by discharging water, a fire extinguisher, or the like from a water discharge nozzle into the fire when a fire occurs in the surveillance area, such as a room in a building.
Such a fire extinguisher is often used in a monitoring area such as a room where people come and go, a station premises, and the like, and therefore the fire extinguishing apparatus is installed on a wall surface that can be seen by passersby. Such a fire extinguisher operates when a fire occurs (when a fire occurs), and when a fire does not occur (when a normal state occurs), the fire extinguishing device is in a standby state. Thus, since the time of operation is limited, it is preferable from the viewpoint of the aesthetics of the room including the monitoring region that the water discharge nozzle or the like is not exposed to the monitoring region when not operating.

Therefore, a fire extinguishing device is installed in a case that is embedded in the wall, so that only the cover of the case is normally visible and the internal device is not visible. At the same time, a fire extinguishing apparatus that takes into consideration design is proposed in which a cover body is rotated to expose a fire extinguishing apparatus such as a water discharge nozzle to perform a fire extinguishing operation.
In the case where the fire extinguisher is exposed only in the case of a fire in this way, in order to expand the extinguishable range by the water discharge nozzle as much as possible, the turning axis that is the rotation center of the water discharge nozzle is substantially the same as the opening of the housing. It was common to arrange on a plane.
However, when the swivel axis of the water discharge nozzle is arranged on the same plane as the opening of the housing, the portion of the housing that covers the front surface of the swivel shaft swells more than the other portions, so this portion is larger than the wall surface. There was a problem that it protruded and this was not preferable from the point of view of beauty.

  Therefore, as a further devise so that a part of the housing does not protrude, a first drive means for turning a fire extinguishing nozzle (corresponding to a water discharge nozzle) around the first turning axis; A second swivel axis that is substantially parallel to the first swivel axis, and the fire extinguishing nozzle and the first swivel axis are moved to the retracted position during normal operation, and the fire extinguishing nozzle and the first swivel to the fire extinguishing position during a fire And a second drive means for moving the swivel axis, wherein the second drive means moves from the retracted position to the fire extinguishing position with the fire extinguishing nozzle and the first swivel about the second swivel axis. There has been proposed a fire extinguishing apparatus characterized by turning a shaft (see claim 4 of Patent Document 1).

The fire extinguishing apparatus disclosed in Patent Document 1 has a two-axis structure of a first swivel axis and a second swivel axis so that the first swivel axis on which the fire extinguishing nozzle is installed is on the back side of the housing. The cover that covers the fire extinguishing device in a normal state is made flush with the wall surface to improve the design.
Japanese Patent Laying-Open No. 2006-223378 (refer to claims 4, 8 and 9)

The fire extinguishing apparatus disclosed in Patent Document 1 requires first driving means and second driving means as driving means for driving the first turning shaft and the second turning shaft, respectively.
Referring to the embodiment of Patent Document 1, a motor is exemplified as the first driving means, and a driven mechanism composed of a motor, gears, and the like is used as the second driving means and the first driving means. The thing comprised from the tubular body which served as the water supply piping which connects a turning axis and a 2nd turning axis is illustrated.

  The motor constituting the second driving means turns the tube constituting the second driving means, and the first turning shaft is provided at the tip of the tube, and the first turning shaft further includes The first drive means (motor or the like) for driving this is mounted, and parts having complicated structures are concentrated. For this reason, the weight of the structure that the motor constituting the second drive means has to turn is large, and a large load is applied to the motor constituting the second drive means. And since weight is large, inertial force becomes large and position control becomes difficult. Furthermore, in order to make the structure capable of withstanding the increased weight, parts such as gears used for swiveling need to be sturdy and costly.

  Moreover, since the thing of patent document 1 was made into the biaxial structure, when water discharges from a fire extinguishing nozzle, a water discharge reaction force will act as a rotational moment with respect to a 2nd turning axis. Therefore, there exists a problem that a 2nd turning axis | shaft turns at the time of water discharge, and cannot hold a water discharge position.

  Thus, since the thing of patent document 1 is made into the 2 axis | shaft structure and drives these 2 axes | shafts by another drive device, it has various problems.

  The present invention has been made to solve such a problem, and can be made a structure with excellent design, and the structure is simple and can easily control the position of the water discharge pipe and maintain the position during water discharge. The object is to provide a device.

(1) A fire extinguishing apparatus according to the present invention includes a swivel arm tube having a base end side disposed in a housing, swiveling with the base end side serving as a swivel axis so that the front end side protrudes and retracts from the housing opening, and the swivel arm A water discharge pipe attached to the tip end side of the pipe so as to be capable of swiveling with respect to the swivel arm pipe, a single drive device that applies a swiveling force to the swivel arm tube and the water discharge pipe, and a driving force of the drive device A turning force transmission mechanism for turning the turning arm pipe and the water discharge pipe by transmitting to the turning arm pipe and the water discharge pipe, and a stopper device for preventing the turning arm pipe from turning when receiving a water discharge reaction force. It is characterized by having.
The stopper device uses not only a separate member such as a member that engages with the swivel arm tube to prevent the swivel arm tube from turning during water discharge, but also uses the braking action of the drive device. This includes the case where no separate member is provided as in the case.

(2) Further, in the above-described (1), the turning force transmission mechanism includes a first turning force transmission mechanism that transmits the driving force of the driving device to the turning arm tube, and the driving force of the driving device to the water discharge pipe. A second turning force transmission mechanism for transmitting, the first turning force transmission mechanism being a gear transmission mechanism, and the gear transmission mechanism having a function as a stopper device. .

(3) Further, in the above described (2), the gear transmission mechanism is constituted by a worm installed on the rotating shaft of the driving device and a worm wheel installed on the swiveling shaft side of the swiveling arm tube. The self-locking action serves as a stopper device.

(4) Further, in any of the above (1) to (3), the second turning force transmission mechanism is constituted by a gear transmission mechanism or a winding transmission mechanism having no locking action. It is.

In the present invention, the proximal end side is disposed in the casing, the pivot arm tube pivoting with the proximal end side as the pivot axis so that the distal end side protrudes and retracts from the casing opening, and the distal end side of the pivot arm tube A water discharge pipe that is pivotably attached to the swivel arm tube, a single drive device that applies a swivel force to the swivel arm tube and the water discharge tube, and a drive force of the drive device to the swivel arm tube and the water discharge tube. By providing a turning force transmission mechanism that transmits to the water pipe to turn the turning arm pipe and the water discharge pipe, and a stopper device that prevents the turning arm pipe from turning when receiving the water discharge reaction force. The swivel axis of the water pipe can be stored in the back side of the housing, and the cover that covers the fire extinguishing device can be made flush with the wall surface in a normal state, so that the design can be improved.
In addition, since the drive unit is single, the overall structure of the device is simple, and it is not necessary to mount the drive unit on the water discharge pipe side, so the weight on the water discharge pipe side can be reduced and the position of the water discharge pipe can be controlled. Is also easy.
Furthermore, by providing the stopper device, the water discharge position can be held at a predetermined position even when a water discharge reaction force generated when water is discharged from the water discharge nozzle.

[Embodiment 1]
FIG. 1 is an explanatory diagram of a main part of a fire extinguishing apparatus 1 according to an embodiment of the present invention. As shown in FIG. 1, the fire extinguisher 1 according to the present embodiment includes a water supply pipe 3 installed in a housing (not shown), a first short pipe 5 rotatably installed in the water supply pipe 3, and a first short pipe. A worm wheel 7 provided integrally with the first short tube 5 at the upper end of the tube 5, and one end side of which is connected to the side surface of the first short tube 5 and swivels along with the rotation of the first short tube 5. A swivel arm tube 9 serving as a flow path of the swivel arm, a second short tube 11 attached to the other end side of the swivel arm tube 9 so as to be parallel to the first short tube 5, and a second short tube 11 rotatable. An installed water discharge pipe 13, a driven bevel gear 15 fixed to the water discharge pipe 13, a water discharge nozzle 17 provided at the tip of the water discharge pipe 13, and a fire source sensor 19 installed in the water discharge pipe 13. Yes.
Further, in the fire extinguisher 1 of the present embodiment, a motor 21 for driving the fire extinguisher 1 is installed in the housing, and the rotating shaft 23 of the motor 21 has a worm 25 that meshes with the worm wheel 7 and an extension shaft 27. Is attached. A main drive bevel gear 29 for driving the driven bevel gear 15 is provided on the distal end side of the extension shaft 27.
Hereinafter, each component of the fire extinguishing apparatus 1 will be described in detail, and the relationship between each component and the components of the present invention will be described.

<Water supply pipe>
The water supply pipe 3 is installed in the housing and is connected to a water supply pipe outside the housing, and supplies fire extinguishing water with a predetermined pressure from a pump (not shown) to the discharge nozzle 17 side in the event of a fire.

<First short pipe (first pivot shaft member)>
The first short pipe 5 is rotatably attached to the raised water supply pipe 3. FIG. 2 is an explanatory diagram of a connection structure between the first short pipe 5 and the water supply pipe 3. As shown in FIG. 2, the first short pipe 5 is rotatably installed on the water supply pipe 3 by a bearing holder 31 through a bearing 33 installed between the water supply pipe 3 and the first short pipe 5. An O-ring 35 for sealing is installed between the water supply pipe 3 and the first short pipe 5.
The first short pipe 5 corresponds to the turning axis of the turning arm pipe 9 in the present invention.

<Swivel arm tube>
The swivel arm tube 9 is connected to the side surface of the first short tube 5 whose one end side is upright, swivels in the horizontal direction as the first short tube 5 rotates, and serves as a fire extinguishing water flow path. . The length of the swivel arm tube 9 is appropriately set according to the installation status of the fire extinguishing apparatus 1 such as the size of the housing.
The swivel arm tube 9 corresponds to the swivel arm tube of the present invention.

<Second short pipe>
The 2nd short pipe 11 is attached to the other end side of the turning arm pipe | tube 9 so that it may become parallel to the 1st short pipe 5, and supports the water discharge pipe 13 rotatably. Therefore, the other end side of the turning arm tube 9 is connected to the side surface of the upright second short tube 11.
The second short pipe 11 communicates with the swivel arm pipe 9 and serves as a fire extinguishing water flow path.

<Water discharge pipe>
One end side of the water discharge pipe 13 is attached to the second short pipe 11 so as to be rotatable in the horizontal direction, and a water discharge nozzle 17 is installed at the tip which is the other end. The water discharge pipe 13 is entirely bent in a square shape, and a fire source sensor 19 is attached to the water discharge pipe 13.
FIG. 3 is an explanatory diagram of a connection structure between the water discharge pipe 13 and the second short pipe 11. The connection structure between the water discharge pipe 13 and the second short pipe 11 is the same as the connection structure between the water supply pipe 3 and the first short pipe 5 shown in FIG. 2. As shown in FIG. It is rotatably installed in the second short pipe 11 via a bearing 33 installed between the water discharge pipe 13 and the second short pipe 11. An O-ring 35 for sealing is installed between the water discharge pipe 13 and the second short pipe 11.
A driven bevel gear 15 is fixed to the water discharge pipe 13, and the water discharge pipe 13 is turned in the horizontal direction by the rotational force transmitted to the driven bevel gear 15 through the extension shaft 27 and the main drive bevel gear 29.
The water discharge pipe 13 corresponds to the water discharge pipe of the present invention.

<Water discharge nozzle>
The water discharge nozzle 17 is installed at the tip of the water discharge pipe 13 and blows off the fire extinguishing water to a predetermined range. The water discharge nozzle 17 corresponds to the water discharge nozzle of the present invention.

<Motor>
The motor 21 is a drive device for rotationally driving the fire extinguishing device 1, and corresponds to the drive device of the present invention.

<Worm wheel, worm, driven bevel gear, main driven bevel gear>
The worm wheel 7 is attached to the first short tube 5, and the worm 25 is attached to the rotating shaft 23 of the motor 21. In particular, the worm 25 is provided with a screw thread substantially perpendicular to the rotation axis, and the rotational force of the motor 21 is transmitted to the first short pipe 5 when the worm wheel 7 and the worm 25 are engaged with each other. The rotation direction of the worm wheel 7 can be set to a desired direction depending on the twist direction of the worm 25 and the worm wheel 7 regardless of the rotation direction of the rotation shaft 23 of the motor 21.
The extension shaft 27 is attached to the rotation shaft 23 of the motor 21 similarly to the worm 25, and the rotational force of the motor 21 is transmitted to the main drive bevel gear 29 via the extension shaft 27. Then, the rotational force of the main bevel gear 29 is transmitted to the driven bevel gear 15, and the rotational direction of the driven bevel gear 15 is opposite to the rotational direction of the main bevel gear 29.
Therefore, if the twist direction of the worm 25 and the worm wheel 7 is set so that the rotation direction of the first short pipe 5 is the same as the rotation shaft 23 of the motor 21, the driven bevel gear 15 is connected to the rotation shaft 23 of the motor 21. Since the rotation is reverse, the first short pipe 5 and the driven bevel gear 15 are reverse rotation.

The gear ratio between the worm wheel 7 and the worm 25 is set to P: Q, for example. In this case, the ratio of the rotation angle of the rotating shaft 23 of the motor 21 and the rotation angle of the first short tube 5 is Q: P.
When the gear ratio between the main drive bevel gear 29 and the driven bevel gear 15 is set to R: S, the ratio of the rotation angle of the rotating shaft 23 of the motor 21 to the rotation angle of the driven bevel gear 15 is S: R.
Therefore, the ratio of the rotation angles of the first short pipe 5 and the driven bevel gear 15 is (SP / R): Q. In this example, the rotation angle ratio between the first short pipe 5 and the driven bevel gear 15 is set to 1: 5.

  The worm 25 and the worm wheel 7 correspond to the first turning force transmission mechanism of the present invention, and the extension shaft 27, the main driving bevel gear 29, and the driven bevel gear 15 correspond to the second turning force transmission mechanism of the present invention. Further, the worm 25, the worm wheel 7, the extension shaft 27, the main driving bevel gear 29, and the driven bevel gear 15 correspond to the turning force transmission mechanism of the present invention.

Next, the operation of the present embodiment configured as described above will be described.
4-7 is operation | movement explanatory drawing explaining operation | movement, and has shown typically the state which planarly viewed the fire-extinguishing apparatus 1 installed in the housing | casing 39 installed in the wall surface 37. FIG. 4 to 7 correspond to those shown in FIG. 4 to 7 mainly explain the movements of the swing arm pipe 9 and the water discharge pipe 13, and the illustration of a part of the configuration of the motor and the like is omitted.
In the following explanation, the fire extinguishing device 1 receives a signal from a fire alarm facility (not shown) from the stored state in which the fire extinguishing device 1 is stored in the housing in a normal time when no fire has occurred, and conducts a water source search. A series of operations until it is performed will be sequentially described.

(1) Storage State In the storage state, as shown in FIG. 4, the first short pipe 5 is arranged at the right end in the drawing on the back side of the casing 39, and the water discharge pipe 13 is in the drawing on the near side of the casing 39. It is arranged at the left end. And the turning arm pipe | tube 9 is arrange | positioned so that the diagonal of the housing | casing 39 may be followed, and the water discharge nozzle 17 is arrange | positioned so that it may overlap with the turning arm pipe | tube 9 by planar view.
Further, a part of the door 41 of the casing 39 is attached to a part of the water discharge pipe 13 so as to be flush with the wall surface 37, and rotates in conjunction with the rotation of the water discharge pipe 13. Open and close the opening.
In addition, the angle which the turning arm pipe | tube 9 shown in FIG. 4 and the housing | casing right side wall comprise is 58 degrees. The angle formed between the swivel arm tube 9 and the right side wall of the housing in this retracted state is the maximum angle at which the swivel arm tube 9 can swivel. This is the shape of the housing 39 determined by the place where the fire extinguishing device 1 is installed. It can be set as appropriate.

(2) Fire source search start position When a signal from a fire alarm facility (not shown) is input to the control unit of the fire extinguishing apparatus 1, the motor 21 is driven based on the signal from the control unit.
When the motor 21 is driven, the rotational force is transmitted to the first short pipe 5 via the worm 25 and the worm wheel 7, and the first short pipe 5 rotates counterclockwise in the figure. When the first short tube 5 rotates counterclockwise, the swing arm tube 9 connected to the first short tube 5 rotates counterclockwise.
On the other hand, the rotational force of the motor 21 is transmitted to the water discharge pipe 13 through the extension shaft 27, the main drive bevel gear 29, and the driven bevel gear 15, and the water discharge pipe 13 turns clockwise.
In this way, the swivel arm tube 9 swivels counterclockwise and the water discharge tube 13 swivels clockwise, and the fire source sensor 19 provided on the water discharge tube 13 protrudes from the wall surface 37 so that the dead angle of the fire source sensor 19 is increased. The exploration by the fire source sensor 19 is started when it comes to the position where it disappears.

  For example, as shown in FIG. 5, the first short pipe 5 is turned 8 ° from the retracted state, and similarly the swivel arm pipe 9 is also turned 8 °. It is assumed that the water discharge pipe 13 which is pushed out to the opening side of 39 and installed at the tip of the swivel arm pipe 9 protrudes from the wall surface 37. At this time, since the rotation angle ratio between the first short pipe 5 and the driven bevel gear 15 is set to 1: 5, the water discharge pipe 13 turns 40 ° clockwise with respect to the turning arm pipe 9. In this state, the water discharge pipe 13 is rotated by 32 ° with respect to the inner side surface of the housing, and is parallel to the wall surface 37 as shown in FIG. If 19 protrudes from the wall surface 37 and the water discharge pipe 13 is parallel to the wall surface 37, there can be no blind spot, so this position can be set as the initial position of the fire source search.

(3) During fire source exploration As shown in FIG. 6, the fire source exploration is performed by further turning the swivel arm tube 9 counterclockwise and turning the water discharge pipe 13 clockwise. At this time, since the turning direction of the turning arm tube 9 and the turning direction of the water discharge pipe 13 are opposite to each other, as shown in FIG. When the water discharge pipe 13 is moved, the water discharge pipe 13 turns in the left direction in the figure, and the area through which the water discharge nozzle 17 passes is narrowed by moving both in the reverse direction.

(4) Fire source search end position The fire source search ends when the fire source sensor 19 scans 180 ° from the entire range in front of the wall surface, in this example, the state shown in FIG. 5 (see FIG. 7). ).
Here, it will be considered how many times the water discharge pipe 13 has to turn with respect to the turning arm pipe 9 in order for the fire source sensor 19 to turn 180 ° in front of the wall surface from the state shown in FIG.
If the water discharge pipe 13 does not turn, the water discharge pipe 13 installed on the turning arm pipe 9 turns α ° counterclockwise when the turning arm pipe 9 turns α ° counterclockwise. Become. That is, if the water discharge pipe 13 does not turn, the water discharge pipe 13 turns counterclockwise by the turning angle of the turning arm pipe 9.
Therefore, in order for the fire source sensor 19 to turn 180 ° in front of the wall surface when the swing arm tube 9 turns α ° from the state shown in FIG. 5, the fire source sensor 19 turns clockwise relative to the wall surface 37. In addition to the angle of 180 °, it is necessary to turn by 180 ° + α ° in the clockwise direction by adding an angle of α ° that is rotated counterclockwise by the turning arm tube 9.
α ° can be obtained from a relational expression of 180 ° + α ° = 5α °, and α = 45 °. That is, when the turning arm tube 9 turns 45 ° counterclockwise from the state shown in FIG. 5, the fire source sensor 19 turns 180 ° in front of the wall surface and scans the entire range. At this time, the swivel arm tube 9 turns 53 ° from the retracted state of FIG. 4, and the water discharge tube 13 turns 265 ° with respect to the swivel arm tube 9.

(5) Water discharge position When the position of the fire source is detected by the fire source sensor 19, the first short pipe 5 and the water discharge nozzle 17 are rotated in the reverse direction from the state shown in FIG. Water discharge is performed by directing the water discharge nozzle 17 to the detected fire source position.
FIG. 8 is a diagram illustrating a state of the fire extinguisher 1 when water is discharged, and the same reference numerals are given to the same portions as those in FIGS. When an external force such as a water discharge reaction force as shown by an arrow in FIG. 8 acts, the external force acts to rotate the first short tube 5 via the swivel arm tube 9. Since the worm wheel 7 provided on is locked by the worm 25, the rotation of the first short pipe 5 is prevented. More specifically, the worm wheel 7 provided on the first short pipe 5 tries to rotate at the time of water discharge, but the thread provided on the worm 25 is provided so as to mesh with the worm wheel 7 at a substantially right angle. Rotation of the first short pipe 5 is prevented by a resistance when the worm wheel 7 rotates.
In this way, even if a water discharge reaction force is applied during fire extinguishing, the first short pipe 5 does not rotate due to the locking action of the worm 25, so that the water discharge position is maintained and a predetermined direction is ensured without providing a separate lock mechanism. The water can be continuously discharged.

(6) Manual Door Opening / Closing Operation FIG. 9 is a diagram illustrating a storage state of the fire extinguishing apparatus 1. As shown in FIG. 9, when the entire apparatus including the water discharge nozzle 17 is stored in a housing 39 inside the wall and the opening of the housing 39 is covered with a door 41, the motor 21 fails for some reason. Even when the motor 21 cannot be driven, when the door 41 that rotates together with the driven bevel gear 15 is operated in the horizontal direction, that is, when the door 41 is pulled forward. As the driven bevel gear 15 rotates, the main bevel gear 29, the extension shaft 27, and the worm 25 rotate, so that the door 41 can be rotated without being locked. Therefore, since the door 41 can be opened manually, the swivel arm tube 9 can be swiveled as shown in FIG. 10 to expose the device to the outside of the wall. For example, repair can be performed.

As described above, in the present embodiment, the swivel arm tube 9 and the water discharge tube 13 are driven by a single motor 21, so that the drive device is more than a conventional example that requires a plurality of motors. This simplifies the structure and reduces the number of parts.
Further, in the present embodiment, since there is one motor 21 as a drive device, the swivel arm tube 9 is compared with the conventional example in which another drive device is mounted at the tip of the swivel arm tube 9. , And the position control of the swivel arm tube 9 becomes easy.

  Further, in the present embodiment, the first turning force transmission mechanism in the present invention is constituted by the worm 25 installed on the rotating shaft 23 of the motor 21 and the worm wheel 7 installed on the first short tube 5, and the second turning force Since the transmission mechanism is constituted by the main driving bevel gear 29 provided on the extension shaft 27 of the rotating shaft 23 of the motor 21 and the driven bevel gear 15 provided on the second short pipe 11 and meshing with the main driving bevel gear 29, It is possible to configure a fire extinguishing device that can be easily manually operated in the event of a failure or the like without shifting the water discharge position due to the water discharge reaction force.

Further, in the present embodiment, the door 41 of the housing 39 is attached to the water discharge pipe 13 so that the door opens and closes as the water discharge pipe 13 rotates, so that no wasteful space is generated. The whole can be made compact.
In this respect, in the device described in Patent Document 1, since it is necessary to install a motor or the like for rotating the water discharge nozzle in the vicinity of the water discharge nozzle, the door cannot be directly provided on the water discharge nozzle, and therefore the door is made to discharge water. It has to be installed outside the swirl area of the nozzle, resulting in useless space.

  Further, in the present embodiment, the water discharge pipe 13 is installed on the distal end side of the swivel arm pipe 9 so as to be turnable in the horizontal direction, and the swivel arm pipe 9 and the water discharge pipe 13 are swung in opposite directions. The water discharge pipe 13 can be swung in the direction opposite to the swiveling direction of the swivel arm pipe 9 at the same time as the arm pipe 9 is swung to cause the water discharge pipe 13 to protrude from the wall surface 37. The required range can be scanned over the entire range while being housed in a small space.

  Further, in the present embodiment, the first short tube 5 is arranged at one corner on the back side in the housing and the swing arm tube 9 is arranged along the diagonal line of the housing 39 in the housed state. Compared with the example of the prior art document 1 shown in a), the maximum length of the swirl region of the water discharge pipe 13 can be reduced (see FIG. 11B), and the entire apparatus can be downsized.

In the above-described embodiment, the first turning force transmission mechanism is constituted by the worm 25 installed on the rotating shaft 23 of the motor 21 and the worm wheel 7 installed on the first short tube 5, and the second turning force transmission mechanism. Is constituted by a driven bevel gear 29 provided on the extension shaft 27 of the rotating shaft 23 of the motor 21 and a driven bevel gear 15 provided on the second short tube 11, so that the self-locking action by the worm 25 and the worm wheel 7 can be achieved. An example is shown in which the first short pipe 5 is not rotated by the water reaction force during water discharge.
However, the present invention is not limited to this, and any other mechanism may be used as long as the first turning force transmission mechanism has a locking action, and the first turning force transmission mechanism has no locking action. May be provided with a separate locking device.

For example, as shown in FIG. 12, the first turning force transmission mechanism includes a drive gear 53 formed of a spur gear installed on the rotating shaft 23 of the motor 21 and a spur gear installed on the first short pipe 5 meshing with the drive gear 53. The first sprocket 57 installed on the rotating shaft 23 of the motor 21, the second sprocket 59 installed on the water discharge pipe 13, the first sprocket 57 and the second sprocket 59. As an example of the stopper device, a stopper gear 63 that meshes with the drive gear 53 at the time of water discharge may be provided.
Moreover, you may make it brake as a stopper apparatus with the motive power of the motor 21 at the time of water discharge.

In the above embodiment, the example in which the rotation angle ratio between the first short pipe 5 and the driven bevel gear 15 is set to 1: 5 has been described. However, the present invention is not limited to this, and the first embodiment What is necessary is just to set suitably the rotation angle ratio of the short pipe 5 and the driven bevel gear 15 with the space and monitoring area | region of the installation location of the fire extinguishing apparatus 1. FIG.
For example, when the width of the casing 39 is inevitably narrow, the maximum angle at which the swivel arm tube 9 can be swung becomes small. Therefore, even with this small swivel angle, the fire source sensor 19 searches the entire range of the monitoring area. In order to make this possible, it is necessary to increase the rotation angle ratio between the first short pipe 5 and the driven bevel gear 15.

However, when the size of the housing 39 is constant, the region in which the water discharge nozzle 17 turns can be reduced by optimizing the rotation angle ratio between the first short pipe 5 and the driven bevel gear 15.
Hereinafter, this point will be described with reference to FIG.

A state in which the blind spots of the water discharge nozzle 17 and the fire source sensor 19 disappear is considered as a base point (hereinafter referred to as “fire source search start position”) (see the left diagrams of FIGS. 13A and 13B).
At this fire source search start position, the pivotable angle of the swivel arm tube 9 is α °. Therefore, it is necessary that the water discharge nozzle 17 and the fire source sensor 19 can scan the entire range (the wall surface 180 ° range) before the swivel arm tube 9 rotates α °. Considering that, if the rotation angle ratio between the first short pipe 5 and the driven bevel gear 15 is 1: P, the rotation is performed when the rotation angle ratio is 1: P = α: (180 ° + α). When the arm tube 9 is maximally movable (α ° movable), the water discharge nozzle 17 and the fire source sensor 19 scan the entire range (see FIG. 13A). The rotation angle ratio at this time is P = (180 + α) / α.
In this case, as shown in FIG. 13A, the turning range in the plan view of the water discharge nozzle 17 and the fire source sensor 19 is within the range of the opening of the housing 39.

When the value of P is larger than (180 + α) / α, the water discharge nozzle 17 and the fire source sensor 19 scan the entire range in a state where the turning angle of the turning arm tube 9 does not reach α (FIG. 13). (See (b)). Although the embodiment shown in FIG. 13B may be used, in this case, as shown in FIG. 13B, the swivel region in the plan view of the water discharge nozzle 17 and the fire source sensor 19 is an opening of the housing 39. It will exceed the range of the part.
Therefore, it is preferable that P = (180 + α) / α because the turning range in the plan view of the water discharge nozzle 17 and the fire source sensor 19 can be minimized.

  In the above embodiment, the swivel arm tube 9 and the water discharge tube 13 swirl in the opposite directions. However, the present invention is not limited to this, and the swivel arm tube 9 and the discharge tube 13 are disposed. The water pipe 13 may turn in the same direction.

It is explanatory drawing of the fire extinguishing apparatus which concerns on one embodiment of this invention. It is explanatory drawing explaining a part of fire extinguishing apparatus shown in FIG. 1 in detail. It is explanatory drawing explaining a part of fire extinguishing apparatus shown in FIG. 1 in detail. It is operation | movement explanatory drawing of Embodiment 1 of this invention, and is a figure which shows the storing state of a fire extinguisher. It is operation | movement explanatory drawing of Embodiment 1 of this invention, and is a figure which shows the fire source search start position of a fire extinguishing apparatus. It is operation | movement explanatory drawing of Embodiment 1 of this invention, and is a figure which shows the state which the fire extinguishing apparatus is performing fire source search. It is operation | movement explanatory drawing of Embodiment 1 of this invention, and is a figure which shows the state which the fire extinguishing apparatus completed the fire source search. It is explanatory drawing explaining the effect of Embodiment 1 of this invention (the 1). It is explanatory drawing explaining the effect of Embodiment 1 of this invention (the 2). It is explanatory drawing explaining the effect of Embodiment 1 of this invention (the 3). It is explanatory drawing explaining the effect of Embodiment 1 of this invention (the 4). It is explanatory drawing explaining the other aspect of Embodiment 1 of this invention. It is explanatory drawing explaining the effect of the optimal aspect of Embodiment 1 of this invention.

Explanation of symbols

1 Fire extinguishing device (Embodiment 1)
DESCRIPTION OF SYMBOLS 3 Water supply pipe 5 1st short pipe 7 Worm wheel 9 Swing arm pipe 11 2nd short pipe 13 Water discharge pipe 15 Driven bevel gear 17 Water discharge nozzle 19 Fire source sensor 21 Motor 23 Rotating shaft 25 Warm 27 Extension shaft 29 Main drive bevel gear 31 Bearing Presser 33 Bearing 35 O-ring 37 Wall surface 39 Housing 41 Door 53 Drive gear 55 Driven gear 57 First sprocket 59 Second sprocket 61 Chain 63 Stopper gear

Claims (4)

A swivel arm tube that has a base end side disposed in the housing and swivels with the base end side as a swivel axis so that the tip end side protrudes and retracts from the opening of the housing, and a swivel arm tube on the tip end side of the swivel arm tube A water discharge pipe attached so as to be capable of swiveling, a single drive device that applies a swiveling force to the swivel arm tube and the water discharge pipe, and a driving force of the drive device is transmitted to the swivel arm tube and the water discharge pipe. A fire extinguishing apparatus comprising: a turning force transmission mechanism for turning the turning arm pipe and the water discharge pipe; and a stopper device for preventing the turning arm pipe from turning when receiving a water discharge reaction force. The turning force transmission mechanism includes a first turning force transmission mechanism that transmits the driving force of the driving device to the turning arm tube, and a second turning force transmission mechanism that transmits the driving force of the driving device to the water discharge pipe. The fire extinguishing apparatus according to claim 1, wherein the first turning force transmission mechanism is a gear transmission mechanism, and the gear transmission mechanism has a function as a stopper device. The gear transmission mechanism is composed of a worm installed on the rotating shaft of the driving device and a worm wheel installed on the rotating shaft side of the swivel arm tube, and acts as a stopper device by the self-locking action of the tooth transmission mechanism. The fire extinguishing apparatus according to claim 2. The fire extinguishing apparatus according to any one of claims 1 to 3, wherein the second turning force transmission mechanism is configured by a gear transmission mechanism or a winding transmission mechanism without a locking action.

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