JPS60202243A - Opening and closing device of damper device - Google Patents

Abstract

PURPOSE:To make it possible to positively carry out engagement of a geared plate placed in an energized state by a minute force by reducing a return repulsive force with a stree of a swinging mechanism portion and absorbing the return repulsive force by a lever mechanism. CONSTITUTION:At ordinary time, a motor 32 stops its operation to make a worm 31 standstill, and a gear 27 is standstill via a gear 29, whereby the gear 27 is pressed by the rotating force of the geared plate 26. The swinging mechanism 33 reduces the rotational force of the geared plate 26 around a shaft 34 because the gear 27 is pressed, and transmits the rotational force thereof to the lever mechanism 38 via a shaft 43, absorbing the pressing force by a shaft 41 and holding the geared plate 26 in an energized state. By pulling a wire 47, in either case of a manual operation or the case of a heat sensitive operation of a temperature fuse, the swinging mechanism 33 is pulled by a shaft 43 due to the bending of the lever mechanism 38. The swinging mechanism 33 revolves to the left around the shaft 34 to release the engagement of the geared plate 26 with the gear 27.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a smoke prevention damper that exhausts or prevents smoke generated during a fire, or a fire prevention damper that prevents the spread of fire. This relates to the opening/closing device used in the damper device K.

(Prior art) In recent years, as buildings have become larger and more complex, smoke dampers that prevent the spread of smoke often generated by fires, smoke exhaust dampers that exhaust smoke to the outside, and fire prevention equipment that prevent the spread of fires are needed. It is mandatory to install a damper device such as a damper.

There are some types of opening/closing devices for such damper devices, as shown in FIGS. 1 and 2. FIG. 1 is an explanatory diagram showing 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. Temperature and Needs When the temperature of the device 3 rises due to a fire, the solder bonding the heat sensitive plate 4 will melt and the heat sensitive plate 4 will come off, causing the compression spring 5 to
The shaft 6 is slid to the right by the spring force, and the fuse lever 7, which will be described later, is unlocked. A rotary shaft 11 is provided across the shaft 10 of the fire damper 1, and a vane 12 attached to the rotary shaft 11 causes the shaft 10 to rotate.
Open and close 10.

Note that the blades 12 are shown in an open, released state. A rotating spring 13 is wound around the opening/closing device 2 in which the rotating shaft 11 is extended. 14 is the clutch mechanism part, there is rotating work 1 inside.
One end of a rotating spring 13 is fixed to the gear plate, and the return force of the rotating spring 13 urges the blade 12 to rotate to the closed position. A lever 15 for manual operation is provided on the left side of the clutch mechanism section 14, and the lever 15 is connected to the rotating shaft 11 by valving a gear plate. 8 is a wire for manual operation.

FIG. 2 is an explanatory diagram showing the clutch mechanism section 14 in FIG. 1 taken out. Numeral 16 is a gear plate, and a gear 17 that anastomoses with the gear plate 16 is attached to a slide plate 18. The slide plate 18 is pressed by the elastic force of a pair of springs 19 to cause the gear 17 to mesh with the gear plate 16 and hold the gear plate 16 in a biased state. When the temperature rises, the temperature fuse device 3 becomes thermally sensitive and the shaft 6 slides, the fuse lever 7 is unlocked and the fuse lever 7 is rotated Mf by the spring force caused by the contraction of the strong spring 21. The fuse lever 7 engages a manual lever n, and the fuse lever 7
The manual lever n also rotates in conjunction with the operation of the manual lever n.
The slide plate 18 is slid against the pair of springs 19 by the suppression of the convex s23 formed in the . 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 force of the rotation spring 13 shown in FIG. The vane 12 is rotated via the shaft 11 into the closed position.

However, in such an opening/closing device for a damper device, the rotary spring 13 urges the gear plate 16 to instantly rotate the blade 12 to the closed position by its urine repulsive force. A pair of springs 19 having a very strong elastic force are used to apply pressure and force to the gear plate 16, and the elastic force of the pair of springs 19 is applied to the return force of the rotating spring 13. The gear plate 16 is held in a biased state. For this reason,
If the pair of springs 19 deteriorates over time and their elastic force decreases, the holding force of the biasing device against the gear plate 16 may be impaired, and there is a risk that the gear plate 16 may rotate. Ta.

Further, when the damper device is activated, the slide plate 18 is slid against the elastic force of the pair of springs 19, so the spring 21 has a stronger elastic force than the pair of springs 19. When using a spring member, if the spring 21 deteriorates and the spring force decreases, there is a risk that the damper device will not operate reliably.

(Object of the Invention) The present invention has been made in view of the above-mentioned problems, and the gear plate, which is biased by the return repulsive force of the rotating spring, is It is an object of the present invention to provide an opening/closing device for a damper device that can reliably lock and release the lock using a minute force without using the damper device.

(Structure of the Invention) To achieve this object, the present invention has a gear plate attached to a rotating shaft extending from an opening/closing mechanism that opens and closes the inside of a duct of a damper device, and a rotating spring wound around the gear plate to bias it. In the opening/closing device of the damper device, which operates the opening/closing mechanism section by the return force of the rotation spring when the gear plate is engaged and disengaged, the gear mechanism section that engages with the gear plate and the gear mechanism section are installed. , a swinging mechanism 7 part that swings around a position different from the rotation axis of the gear mechanism part as a fulcrum, and a bendable lever mechanism part connected to one end of the swinging mechanism part, and bending of the lever mechanism part by a release operation. The swinging mechanism section is oscillated and pressure is applied to release the engagement between the gear mechanism section and the gear plate.

(Example) Embodiments of the present invention will be explained below based on the drawings.

FIG. 3 is a perspective view showing one embodiment of the opening/closing device of the present invention used in the fire damper of FIG. 1.

First, the configuration will be explained. 5 is a frame body, and the inside of the frame body 5 is provided with a gear plate 26. The gear plate 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 energized.

Z is a gear that meshes with the gear base, and a gear 29 is attached via a shaft. On the shaft side, 031, which is rotatably attached to the mounting base, is a worm that meshes with gear 4, and is fixed to the extending shaft of the motor 32 for return, and transfers the driving force of the motor 32 to gear 4. to communicate. Mounting stand 301C
Fixed motor 32, worm 31, and gear 27
．． 29 forms a gear machine #It section. 33 is included in the swing mechanism section.

The frame body δ that guides the swinging mechanism section 33 is provided with a row of openings larger than the shaft at positions corresponding to the transport rows, and the shaft is opened when the gear mechanism section is installed in the swinging mechanism section 33. It swings using A as a fulcrum. To install the gear mechanism section on the swing mechanism section 33, the mounting base (material) is fastened to the swing mechanism section 33 with screws in a movable state, and the mounting base (equipment) is fixed to the swing mechanism section 33 with screws in a movable state.
This is done by contacting the stopper 37K of the swinging mechanism. A is the lever mechanism section, which is formed by the lever 39 and the lever 4o.

The lever 39 swings about a shaft 41 provided approximately at the center as a fulcrum, and is connected to one end of the lever 4o via a shaft 42.

The lever mechanism part A bends and extends as the 42nd bending/extending axis. The other end of the lever is connected to one end of the swinging mechanism by a shaft 43, and the bending and stretching motion of the lever mechanism causes the swinging mechanism to swing. A spring material is wound around the shaft 41 and biases the shaft 42 between the lever mechanism parts in the direction of a stopper 45 fixed to the frame δ), and when the shaft 41 comes into contact with the stopper 45, the shaft 4
1.42.43 are located on the straight line. 46 is the shaft 48
It is a manually operated lever that is biased to rotate clockwise by a spring 53 wound around the wire.By pulling the wire 47, the lever rotates counterclockwise about the shaft 48, and by pushing the lever 39, the lever mechanism is activated. Stretch bar 45 on axis 42 of Gozeki.
Bend it in the opposite direction. Reference numeral 49 denotes a sliding lever, which is attached to the frame 5 so as to be slidable, and is biased to slide to the left by the contraction of a spring. When the temperature fuse device 3 thermally operates and the shaft 6 slides downward, the pawl 51 provided on the slide lever 49 is disengaged from the shaft 6, and the slide lever 49 slides to the left.

As the sliding lever 49 slides, the claw 52 comes into contact with the lever 39 and pushes it in, bending the lever mechanism [838] in the direction away from the stopper.

Next, the holding operation during normal operation will be explained. As shown in FIG. 3, under normal conditions, the lever mechanism is extended by the repulsive force of the spring 44, and the shafts 41, 42, and 43 are positioned on a straight line. Due to the extension of the lever mechanism section, the swing mechanism section 33 is positioned so as to engage the gear 27 and the gear plate. The gear & portion is given a rotational force by the return repulsive force of the rotation spring 13, and transmits the rotational force of the gear plate to the gear n. However, the motor 32 normally stops its operation and keeps the worm 31 stationary 1, and since the gear 27 is stationary via the gear 29 connected to the worm 31, the rotational force of the gear plate causes υ Push in gear γ. Swing mechanism section 33. When the gear blade is pushed in, the rotational force of the gear plate station is reduced by the lever principle, centered around the shaft 34, and transmitted between the lever mechanism parts via the shaft 43. Lever mechanism part aha, shaft 43.42.
Since the shaft 41 is located on a straight line, the pressing force from the swinging mechanism 33 is absorbed by the shaft 41, and the gear plate is held in a biased state.

Next, the closing operation of the damper by manual operation or thermal activation of the temperature fuse device will be explained. Either by manual operation by pulling the wire 47 or by thermally sensitive operation of a temperature fuse device, the lever mechanism is bent by unbalancing the elongated straight line of the shaft 43, 42, 41. Swinging mechanism part 3 with the axis center by bending the lever machine *S3S
Pull 3. The swing mechanism section 33 rotates to the left about the shaft A, and the gear plate disengages the gears 1-'II. The gear plate is rotated by the return force of the wound rotation spring 13, rotates the blade 12, and closes the duct 10.

(Effects of the Invention) As described above, according to the present invention, a gear plate is attached to a rotating shaft extending from an opening/closing mechanism section that opens and closes the inside of a duct of a damper device, and a rotating spring is wound around the gear plate and biased. In the opening/closing device of the damper device, the opening/closing mechanism is operated by the urine repulsion force of the rotary spring when the gear plate is engaged with and disengaged from the gear plate;
A swinging mechanism section that swings around a position different from the rotation axis of the gear mechanism section as a fulcrum when the gear mechanism section is installed, and a lever mechanism section that can freely bend and extend connected to one end of the swinging mechanism section are provided, and the gear plate By reducing the return force of the rotating spring that is forced into the lever mechanism by the stress of the swing mechanism and absorbing it by the lever mechanism, the engagement of the biased gear plate is reduced. Stopping can be performed reliably with a minute force.

In addition, when operating the damper, the extending lever mechanism part must be bent with a minute force, and the engagement between the gear mechanism part and the gear plate must be released, allowing the damper to be moved easily and reliably. The effect is that it can be operated.

In addition, although the case where the opening/closing device of the present invention is used as a fire prevention damper has been explained above, other damper devices, for example, the smoke exhaust damper 1 that exhausts smoke generated in the event of a fire, have been explained.
1. In the end, it can be applied to an appropriate damper device such as a smoke damper that prevents smoke during a fire.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the conventional release device in use together with a damper device, Fig. 2 is an explanatory diagram showing the latch mechanism part of Fig. FIG. 2 is a perspective view showing an embodiment of the opening/closing device.・ 1 - Fire damper 2 Switching device 3 Temperature fuse device 4 Heat sensitive plate 5, 19.21.36
．． 44.50... Spring 6... Shaft 7... Temperature hinge lever 8.47... Wire 10... Duct 11... Rotating shaft 12... Vane 13... Rotating spring 16.26 ...Gear plate 5...
Frame body 27.29...Gear path, 34.41.42.43.48...Between shafts...
Mounting base 32... Motor 31... Worm A... Rocking mechanism part A... Screw 37.45... Stopper enclosure... Lever mechanism part 3
9.40.46...Lever 49...Sliding Wthv bar 51.52...Claw patent applicant Houteki Co., Ltd. &
, Susumu Takeuchi, Patent Attorney, Ikkoku, Figure 1

Claims (1)

[Scope of Claims] A gear plate is attached to a rotating shaft extending from an opening/closing mechanism that opens and closes the inside of a duct of a damper device, and a rotating spring is wound around the sales plate to bias it, and the gear plate is engaged with the gear plate. Jt) In the opening/closing device of the damper device that operates the opening/closing mechanism section, the gear mechanism section meshes with the gear plate, and the gear a swinging mechanism that swings about a position different from the rotation axis of the mechanism as a fulcrum, and a gear mechanism that is connected to one end of the swinging mechanism and swings the structure when bent by a release operation. An opening/closing device for a damper device, which is equipped with a lever mechanism for releasing the engagement of gear plates.