JPH0441874Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention normally moves an opening/closing plate that opens and closes an opening in a building or a conduit, etc. to a closed position or an open position against the elastic force of an elastic member. locks in position,
The opening/closing device is configured to release the lock in an emergency, and more specifically, a traction wire that pulls the opening/closing plate against elastic force is pulled through a plurality of tension members hung on the traction wire. The present invention relates to an opening/closing device for an opening/closing plate that is locked with a button.

"Prior art and its problems" In general, this type of switchgear is used for the purpose of preventing the spread of fire from the location where it occurred, or preventing smoke from rising in the event of an emergency such as a fire. I'm there. Such an opening/closing device, for example, normally pulls an opening/closing plate that opens and closes a duct with a pulling wire against the elastic force of an elastic member that biases the opening/closing plate in the opening direction or the closing direction. The traction wire is locked in a tensioned state, and in an emergency, the traction wire is released manually or by the action of a smoke detector.

By the way, conventionally, each opening/closing device is generally provided with one manual unlocking mechanism for releasing the locking of the traction wire. Some floors of a business office, etc. that have a single floor may be required to be separated by partitions, and in such cases, from the standpoint of disaster prevention, etc. It is desirable to provide a manual lock release mechanism for each room. However, the above-mentioned devices cannot sufficiently meet these demands, and it is necessary to take measures such as increasing the number of switching devices or wiring an electric switch in conjunction with the locking mechanism. is required, resulting in high costs,
In addition, there were problems such as unsatisfiedness in terms of reliability.

The present invention has been proposed in view of the above-mentioned circumstances, and by locking the traction wire that pulls the opening/closing plate against elastic force in a tension state with a plurality of actuating wires, a plurality of An object of the present invention is to provide an opening/closing device for an opening/closing plate that can operate the opening/closing plate from a location where the opening/closing plate can be operated, has the effect of improving its reliability and certainty, and has a simple structure and can reduce costs. .

"Means for solving the problem" In order to achieve the above-mentioned object, the present invention provides a traction device for pulling an opening/closing plate for opening and closing an opening in a building or a conduit, etc. against the elastic force of an elastic member. a wire, a plurality of tension members suspended in the middle of the traction wire, an actuating wire having one end fixed to each of these tension members and pulling the traction wire through the tension members; a locking mechanism that locks the actuating wire in a tensioned state, and guide members that change the direction of the tension applied to the traction wire are alternately applied to the tension member, and , at least one of the locking mechanisms for the actuating wire is provided with a release mechanism that operates the locking mechanism to release the lock.

"Operation" When the release mechanism is operated to release the lock of the locking mechanism, the actuation wire is relaxed and the tension of the traction wire is released, and the opening/closing plate is urged by the elastic force of the elastic member to open/close. Close or open the opening or conduit to which the plate is attached.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
Under normal conditions, the traction wire 3 is rotated and locked to the closed position against the elastic force of the elastic member 2, and in an emergency, the traction wire 3 is loosened and the elastic member 2 rotates. The traction wire 3 is rotated in the opening direction (direction of arrow A in FIG. 5 is fixed at one end, and the opening/closing plate 1 opens and closes by tensioning or relaxing the actuating wire 5 by operating an operating device 6 at its tip.

The opening/closing plate 1 is rotatably housed in a housing 7 attached to a ventilation opening of a smoke exhaust duct via a rotation shaft 8 passing through the housing 7, and one end of the rotation shaft 8 A lever 9 for rotating the rotation shaft 8 is attached to the protruding portion.

In the illustrated example, the elastic member 2 is constituted by a coil spring, and its one end is attached to the housing 7 and the other end is attached to the lever 9, and urges the opening/closing plate 1 to rotate in the opening direction. ing.

Further, the traction wire 3 has one end fixed to the lever 9, and the other end passed through the fixing member 11 of the storage case 10 that houses the tension member 4 and fixed by a fixing fitting 12, Furthermore, on the way,
It is fixed to the side plate portion 10a of the storage case 10 and is wound around a guide member 13 that changes the direction of tension.

Now, the tension members 4 are arranged in the storage case 10 so as to be alternately located with the guide members 13, and are designed to wind the traction wire 3 in a zigzag shape within the storage case 10. In the embodiment, both the tension member 4 and the guide member 13 are constituted by pulleys.

On the other hand, the actuating wire 5, which has one end fixed to the tension member 4, has the other end attached to a winding drum 14 in the operating device 6, and is wound around the winding drum 14, thereby causing the above-mentioned operation. Traction wire 3
It's starting to pull.

The operating device 6 includes a locking mechanism 15 that locks the actuation wire 5 in a tensioned state, and a release mechanism 1 that operates the locking mechanism 15 to release the lock.
6, and the locking mechanism 15 is a winding drum 14, a ratchet wheel 17 coaxially attached to the winding drum 14, and a ratchet wheel 17 that engages with the ratchet wheel 17 to restrict its rotation. The release mechanism 16 is mainly composed of a push button 19 for operating the claw member 18.

Note that these locking mechanisms 15 and release mechanisms 16
is not limited to that of the embodiment described above, and its configuration is arbitrary.

In the figure, reference numeral 20 is a cover of the storage case 10, and 21 is a guide member for guiding the traction wire 3 and the actuating wire 5 to the storage case 10.

Next, the operation of this embodiment configured as above will be explained.

A state in which the opening/closing plate 1 is set in the normal closed position, that is, the opening/closing plate 1 is pulled by the pulling wire 3 and the actuating wire 5 against the elastic force of the elastic member 2 and is engaged with the locking mechanism 15 of the operating device 6. In the stopped state, if the push button 19 of any one of the operating devices 6 is pressed due to the occurrence of an emergency such as a fire, the engagement between the ratchet wheel 17 and the pawl member 18 is disengaged, and the traction wire 3 and the actuation The wire 5 is relaxed, and the lever 9 is rotated clockwise in FIG. 1 about the rotation shaft 8 by the elastic force of the elastic member 2. With this operation,
The opening/closing plate 1 is released from the locked state, and the operating device 6
The opening operation is linked to the operation of , and the smoke exhaust port is opened. Furthermore, at this time, the traction wire 3 is wound alternately with the tension member 4 by the guide member 13, so even if the tension of the actuation wire 5 is suddenly loosened, it will not come off from the tension member 4 and the guide member 13. There is no.

On the other hand, to set the opening/closing plate 1 to its original state,
The winding drum 14 is rotated to wind up the actuating wire 5, and the locking mechanism 15 allows the actuating wire 5 to be wound around the winding drum 14.
It is sufficient to lock it in the state where it is wound up. By this operation, the actuating wire 5 pulls the traction wire 3 via the tension member 4 and pulls it.
The opening/closing plate 1 rotates in the closing direction to keep the ventilation port closed.

In addition, at this time, the tension member 4 is connected to the traction wire 3
Since the guide members 13 and the guide members 13 are arranged alternately,
There is no rattling inside the storage case 10,
The traction wire 3 can be reliably pulled.

In the above-described embodiment, the opening/closing plate 1 is a smoke exhaust pipe that opens the air outlet in an emergency, but the present invention is not limited to this, and can be applied to other damper devices. Of course, any device can be used as long as the opening/closing plate 1 is pulled by the pulling wire 3 and held in the open position or the closed position while the opening/closing plate 1 is urged by the elastic member 2. Needless to say, it can also be applied to

FIG. 3 shows another embodiment of the present invention, which is basically the same as the embodiment, except that the number of tension members 4 hung on the traction wire 3 has been changed. This differs from the previous embodiment in that the number of wires has been increased, and that the structure of the fastening portion at the other end of the traction wire 3 has been changed. That is, in this embodiment, the actuating wire 5 is attached to the traction wire 3 via a large number of tension members 4, and the traction wire 3
The other end is fixed to the winding drum 25 to absorb the elongation of the pulling wire 3.

Therefore, in this embodiment, the elongation of the pulling wire 3 can be absorbed, and more operating devices can be wired than in the previous embodiment. In addition, when many tension members 4 are attached in this way, for example, when there is no need to attach the operating device 6 to the tip of the actuation wire 5, the actuation wire 5 only needs to be stopped by the locking mechanism 15, The locking mechanism 15 in this case is not used as a ratchet mechanism as in the previous embodiment, but may have any configuration as long as it can simply lock the tip of the actuating wire 5.

Next, another embodiment of the present invention will be explained with reference to FIG. 4. Even in this embodiment, the configuration is as follows.
Basically, it is the same as the previous two embodiments, but
This embodiment differs from the two embodiments in that the mounting position of the guide member 13 is changed. That is, in this embodiment, the guide member 13 is a regular square fixed member 3 inside the storage case 30.
1, and these guide members 1
A tension member 4 is disposed between the storage case 30 and the operating wire 5 extending to all sides of the storage case 30.

Therefore, in this embodiment, the actuating wire 5
can extend in all directions, compared to the configuration in which they extend in parallel as in the previous embodiment.
This has the advantage that the actuation wire 5 can be easily routed.

"Effects of the invention" As explained above, according to the invention, the opening/closing plate biased by the elastic member can be operated mechanically from multiple locations. When multiple operating devices are required for a switchgear, it can improve its applicability, and has various excellent advantages such as being highly reliable and reducing costs due to its simple structure. be effective.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a plan view and Figure 2 being the figure 1-
3 is a plan view showing another embodiment of the present invention, and FIG. 4 is a plan view showing another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Opening/closing plate, 2... Elastic member, 3... Traction wire, 4... Tension member, 5... Operating wire, 6
...Operating device, 8... Rotating shaft, 10... Storage case, 13... Guide member, 14... Winding drum, 15... Locking mechanism, 16... Release mechanism, 17
...Rawl wheel, 18...Claw member, 19...Push button.

Claims (1)

[Scope of utility model registration request] Normally, the opening/closing plate that opens and closes the opening of a building or a conduit, etc., resists the elastic force of an elastic member.
In an opening/closing device for an opening/closing plate that is locked in a closed position or an open position and released from the locking in an emergency, the opening/closing device is a traction device that pulls the opening/closing plate against the elastic force of an elastic member. a wire, a plurality of tension members suspended in the middle of the traction wire, an actuating wire having one end fixed to each of these tension members and pulling the traction wire through the tension members; a locking mechanism that locks the actuating wire in a tensioned state, and a guide member that changes the direction of the tension applied to the traction wire is applied to the traction wire alternately with a tension member, Furthermore, at least one of the locking mechanisms for the operating wire is provided with a release mechanism that operates the locking mechanism to release the lock.