JPS6240606Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a smoke prevention damper that exhausts or prevents smoke generated during a fire, or a fire prevention damper that prevents the spread of fire. The present invention relates to a switching device used in a damper device.

(Prior art) In recent years, as buildings have become larger and more complex, smoke dampers have been developed to prevent the spread of smoke generated by fires.
It is mandatory to install a damper device such as a smoke exhaust damper to exhaust smoke to the outside or a fire prevention damper to prevent the spread of fire. As an opening/closing device for such a damper device, there is one shown in FIGS. 4 and 5. FIG. 4 is an explanatory diagram illustrating a fire damper as an example of a damper device together with a switching device, where 1 is a fire damper, 2 is a switching device, and 3 is a temperature fuse device. In the temperature fuse device 3, when the temperature rises due to a fire, the heat-sensitive plate 4 comes off due to the melting of the solder that adheres the heat-sensitive plate 4, and the shaft 6 is slid to the right by the spring force of the compression spring 5, and the fuse described later is removed. Release the lever 7. A rotating shaft 11 is provided approximately at the center of the fire damper 1, crossing the duct 10, and a blade 12 attached to the rotating shaft 11 rotates the duct 1.
Open and close 0. Note that the blade 12 is shown in an open state. Inside the opening/closing device 2 where the rotating shaft 11 extends,
A rotation spring 13 is wound around it. Reference numeral 14 denotes a clutch mechanism section, which is equipped with a gear plate in which the rotating shaft 11 is mounted, one end of the rotating spring 13 is fixed to the gear plate, and the blade 12 is rotated to the closed position by the return force of the rotating spring 13. We are encouraging them to do so. On the left side of the clutch mechanism section 14 is a lever 15 for manual operation.
is provided and connected to the rotating shaft 11 via a gear plate. 8 is a wire for manual operation.

FIG. 5 is an explanatory diagram showing the clutch mechanism section 14 of FIG. 4 taken out. 16 is a gear plate, and a gear 17 that meshes with the gear plate 16 is attached to a slide plate 18. The slide plate 18 is
The elastic force of the pair of springs 19 pushes the gear 17 to the left, causing the gear 17 to mesh with the gear plate 16, so that the gear plate 1
6 is held in a biased state. When the temperature fuse device 3 thermally operates due to a rise in temperature and the shaft 6 slides, the fuse lever 7 is unlocked and the fuse lever 7 is rotated to the right by the spring force of the strong spring 21. The fuse lever 7 is engaged with the manual lever 22, and the manual lever 22 also rotates in conjunction with the operation of the fuse lever 7.
The slide plate 18 is slid to the right against the pair of springs 19 by the pressure of the convex portion 23 formed in the slide plate 2 . When the slide plate 18 slides, the gear 17 and the gear plate 16 are disengaged, and the gear plate 16 rotates due to the return repulsive force of the rotation spring 13 shown in FIG. The blades 12 are rotated to the closed position through the opening.

(Problem to be solved by the invention) However, in such a conventional opening/closing device, when replacing the temperature fuse device 3 that is thermally operated, the temperature fuse lever is released by sliding the shaft 6. 7 is pulled in by the spring force of a strong spring 21, and the temperature fuse lever 7 is moved beyond the locking position (set position) with the shaft 6 to the reset position against the spring force of the strong spring 21. Pull back the temperature fuse device 3 with the temperature fuse lever 7 held in the reset position.
had to be replaced, and the replacement work was complicated and time-consuming. When the replacement of the temperature fuse device 3 is completed, the temperature fuse lever 7 must be released from the reset position, and the temperature fuse lever 7 must be brought into contact with the shaft 6 to prepare for re-operation. First, there was a problem that the damper device would not operate if the user forgot to release the reset state or performed the replacement work in the wrong order.

(Means for Solving the Problems) The present invention was made in view of the above problems, and it simplifies the replacement work of the temperature fuse device, and also makes it possible to easily set it to the set state and prepare for reactivation. In order to provide an opening/closing device for the damper device, the sliding mechanism is actuated by releasing the lock from the shaft of the temperature fuse device installed in the duct of the damper device, and the toggle link is activated by the pressure caused by the sliding of this sliding mechanism. The swinging mechanism connected to one end of the toggle link is bent to swing, and the gear mechanism installed in the swinging mechanism is disengaged from the gear plate, and the rotation spring caught in the gear plate is released. In the opening/closing device of a damper device, which rotates a gear plate by return repulsive force and operates an opening/closing mechanism section that opens and closes blades in a duct via a rotating shaft pivoted on the gear plate.
The sliding mechanism includes a first pawl that stands up when set, holds the sliding mechanism in the set position when it comes into contact with the shaft of the temperature fuse device, and falls sideways when it comes into contact with the shaft when pulled back. , a second claw is provided that stands up when the sliding mechanism is set, presses the toggle link when the sliding mechanism is unlocked, and falls sideways when the toggle link comes into contact with the toggle link from behind when pulled back. This is what I did.

(Example) Examples of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view showing an embodiment of the opening/closing device of the present invention used in the fire damper shown in FIG. 4. FIG. First, to explain the configuration, 25 is a frame body,
A gear plate 26 is provided inside the frame 25. The gear plate 26 has a rotary shaft 11 extending from the opening/closing mechanism of the fire damper 1 shown in the conventional example shown in FIG.
is biased to rotate to the closed position. 27
is a gear that meshes with the gear plate 26, and a gear 29 is attached via a shaft 28. The shaft 28 is rotatably attached to the mounting base 30. 31 is gear 29
It is a worm that engages with the motor 32 for return.
It is fixed to a shaft that extends further, and transmits the driving force of the motor 32 to the gear 29. Motor 32, worm 31, and gears 27, 2 fixed to mounting base 30
9 forms a gear mechanism section. Reference numeral 33 denotes a swinging mechanism section, and the frame body 25 that guides the swinging mechanism section 33 is provided with an opening 24 larger than the shaft 28 at a position corresponding to the shaft 28, so that the gear mechanism section can be connected to the swinging mechanism section. 33, it swings about a shaft 34 as a fulcrum. To install the gear mechanism section on the swing mechanism section 33, the mounting base 30 is fixed to the swing mechanism section 33 in a movable state using screws 35, and the mounting base 30 is brought into contact with the stopper 37 by the pressure of a strong spring 36. Do it by letting it happen. 38 is a toggle link, which is formed by a lever 39 and a lever 40. Lever 39
rotates about a shaft 41 provided approximately in the center as a fulcrum,
It is connected to one end of a lever 40 via a shaft 42. The toggle link 38 bends and extends with the axis 42 as a bending and extending axis. The other end of the lever 40 is connected to one end of the swinging mechanism section 33 by a shaft 43, and the swinging mechanism section 33 is swung by the bending and stretching motion of the lever mechanism section 38. axis 41
The spring 44 is wound around the toggle link 38.
The shafts 41, 42, and 43 are biased to bend in the left direction, and the shafts 41, 42, and 43 are positioned in a straight line when they come into contact with a stopper 45 fixed to the frame 25. 4
Reference numeral 6 denotes a manual lever that is biased to rotate clockwise by a spring 53 wound around the shaft 48. By pulling the wire 47, the lever 6 rotates counterclockwise about the shaft 48, and by pushing the lever 39, the toggle is activated. The shaft 42 of the link 38 is bent to the right. 53
is a sliding mechanism section, and the sliding lever 49 is connected to the frame 25.
It is slidably attached to, and is biased by a spring 50 so as to slide to the left.

2 is a plan view showing the sliding mechanism section 53 in FIG. 1 taken out, and FIG. 3 is a plan view showing the sliding mechanism section 53 in FIG. 2.
It is a front view of No. 3. Figures 1, 2, and 3
The sliding mechanism section 53 will be explained in detail with reference to the drawings.

51 is a claw (first claw), and the sliding mechanism part 53
When the lever 49 is set, it stands up due to the bias of the spring member 55 and comes into contact with the shaft 6, thereby holding the sliding lever 49 in the set position. Furthermore, the pawl 51 is provided with a chamfer 58, and when it comes into contact with the shaft 6 when the sliding lever 49 is pulled back after sliding the sliding lever 49,
It can be rotated around the shaft 54 and laid down horizontally. 52
is a pawl (second pawl) which stands up due to the bias of the spring member 56 when the sliding mechanism section 53 is set, and presses the lever 39 when the sliding lever 49 moves when the sliding mechanism section 53 is released. Further, when the sliding lever 49 is pulled back, the pawl 52 contacts the lever 39 and rotates to the left, thereby allowing the pawl 52 to fall sideways.

Next, the closing operation of the damper due to the heat-sensitive operation of the temperature fuse device 3 will be explained. Temperature fuse device 3
When the shaft 6 is pulled downward by the heat-sensitive action, the engagement between the shaft 6 and the pawl 51 is released, the sliding lever 49 slides to the left by the spring force of the spring 50, and the pawl 52 pulls the lever 39. Press to bend the toggle link 38. 4 by bending toggle link 38
3 and pull the swinging mechanism part 33. The swing mechanism section 33 rotates to the left about the shaft 34, and the gear plate 29
and the gear 27 is disengaged. The gear plate 26 is rotated by the return repulsive force of the wound rotation spring 13, rotates the blade 12, and closes the duct 10.

Next, a case will be described in which a temperature fuse device that has operated thermally is replaced. When the temperature fuse device 3 operates thermally, the shaft 6 is retracted and the pawl 51
is released, and the sliding lever 49 slides to the left. As the sliding lever 49 slides, the pawl 52 moves while pushing the lever 39 to close the toggle link 38.
bend. The pawl 51 continues to move further and, due to the bending of the toggle link 38, passes past the lever 39 and comes to rest. The temperature fuse device 3 is replaced with a new one in a state where the temperature fuse device 3 is thermally activated. When the replacement of the temperature fuse device 3 is completed, put your hand on the claw 57 and pull it back against the spring force of the spring 50. At this time, the claws 51 and 52 come into contact with the shaft 6 and the lever 39, respectively, but by further pulling them back, the claws 51 and 52 fall sideways and pass through the shaft 6 and the lever 39, respectively. When returned to the set position shown in the figure, the claws 51 and 52 that have fallen sideways are erected by the spring force of spring members 55 and 56 provided respectively, and the claws 51 come into contact with the shaft 6 in preparation for re-operation.

In addition, although the case where it is used as a fire prevention damper has been explained above, other damper devices, such as a smoke exhaust damper that exhausts smoke generated during a fire,
Or a smoke damper to prevent smoke during a fire, etc.
It can be applied to any appropriate damper device.

(Effect of the invention) As explained above, according to the invention, the sliding mechanism is actuated by releasing the lock by the shaft of the temperature fuse device provided in the duct of the damper device, and the sliding mechanism of the sliding mechanism is activated. The toggle link is bent by the pressure of In the opening/closing device of a damper device, the sliding mechanism part rotates the gear plate by the return repulsive force of the rotation spring, and operates the opening/closing mechanism part that opens and closes the blades in the duct via the rotating shaft pivoted on the gear plate. To,
When set, it stands up and holds the sliding mechanism in the set position by contacting the shaft of the temperature fuse device,
a first pawl that falls sideways upon contact with the shaft when pulled back; and a first pawl that stands up when the sliding mechanism is set and presses the toggle link when the sliding mechanism is unlocked;
By providing a second claw that falls sideways when it comes into contact with the toggle link from behind when it is pulled back, it simplifies the replacement work for the thermally operated temperature fuse device, and also allows the sliding mechanism to be removed after replacement. By simply pulling it back, the damper device can be easily set to the set state, and the damper device can be reliably prepared for re-operation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a plan view showing the sliding mechanism section of FIG. 1, FIG. 3 is a front view of FIG. 2, and FIG. The figure is an explanatory view showing the conventional opening/closing device in use together with a damper device, and FIG. 5 is an explanatory view showing the clutch mechanism section of FIG. 4 taken out. 1...Fire damper, 2...Switching device, 3...
Temperature fuse device, 4... Heat sensitive plate, 5, 19, 2
1, 36, 44, 50... Spring, 6... Shaft, 7... Temperature fuse lever, 8, 47... Wire, 10... Duct, 11... Rotating shaft, 12...
...Blade, 13... Rotating spring, 16, 26... Gear plate, 25... Frame, 27, 29... Gear, 28,
34, 41, 42, 43, 48...axis, 30...
Mounting base, 32... Motor, 31... Worm, 3
3... Rocking mechanism section, 35... Screw, 37, 45...
...Stoppa, 38...Toggle link, 39,4
0,46...Lever, 49...Sliding lever, 5
1, 52...Claw, 53...Sliding mechanism section, 54...
Shaft, 55, 56... spring member.

Claims (1)

[Claims for Utility Model Registration] A temperature fuse device provided in the duct of the damper device is operated to pull the shaft to release the set state of the sliding mechanism, and the sliding mechanism is pressed by sliding. The toggle link is bent to swing the swinging mechanism connected to one end of the toggle link, and the gear mechanism installed in the swinging mechanism is disengaged from the gear plate so that the gear plate does not get caught up in the gear plate. The gear plate is rotated by the return repulsive force of the rotation spring,
In the opening/closing device of the damper device, which operates an opening/closing mechanism for opening and closing the blades in the duct through a rotating shaft pivotally attached to the gear plate, the damper device stands up when set in the sliding mechanism and connects the temperature fuse device. A first pawl that contacts the shaft to maintain the set state and falls sideways upon contact with the shaft when pulled back, and a first pawl that stands up when set and presses the toggle link by the operation of the sliding mechanism and pulls it back. An opening/closing device for a damper device, characterized in that a second pawl is provided that causes the toggle link to fall sideways when it comes into contact with the back surface of the toggle link.