JPH02130341A - Damper device - Google Patents

Abstract

PURPOSE:To reduce pressure loss and ensure closing by installing a drive motor outside a cylinder which forms an air passage, sliding a support shaft which makes a sliding motion in a central line direction by way of a connection cable in the cylinder, and breaking away from a blade fixed at the support shaft from an opening of the cylinder. CONSTITUTION:When a ventilating fan is switched on, power is supplied to a damper device and a geared motor 2 is rotted so that a motor rib 16 may be rotated, thereby hoisting a connection wire 17. Complied with this motion, a support shaft 9 is pulled out forward against the energization of a spring 14 while a blade 10 is broken away from an opening of an opening flange 8 in a central line direction so that the opening may be opened. When the ventilating fan is switched off, the damper device is also turned off and a clutch is disengaged so that the support shaft 9 may be pulled back by the force of the spring 14. As a result, the blade 10 closes the opening. The motor rib 16 returns to the original state. This device does not produce any gap under a closed state since the blade 10 does not rotate. Moreover, the motor 2 is positioned outside a cylinder 1, which makes it possible to minimize pressure loss in an air passage and consumption power as well.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The second invention relates to a damper device that is installed in an air passage and opens and closes the air passage as necessary.

[Prior Art] For example, in a Dan 1 device that operates in conjunction with a ventilation fan, the blades that open and close the air passage are moved by rotary lenoid as disclosed in Japanese Utility Model Application No. 63-46750. There are many. What is disclosed in the above publication is that a blade is provided in a cylindrical body forming an air passage, and a -f4c axis is rotated on the blade by a rotary lens so that the blade is oriented parallel to the air flow direction. This opens the air passage, and the blades are oriented perpendicular to the air flow direction to close the air passage. In this type of damper device, the output shaft of the rotary solenoid and the shaft of the blade are connected by a gear, and are arranged in the air passage of the main body together with the rotary solenoid.

[Problems to be Solved by the Invention] In the conventional damper device described above, the rotary solenoid and the power transmission system are located in the air passage, and the power transmission system is composed of bulky members such as gears, so pressure loss occurs. Since the blades rotate within the air passage, there is a gap between the inner peripheral surface of the main body and the outer periphery of the blades to allow the blades to rotate smoothly even in the closed state, and the power consumption is also high. Contains issues that should be addressed.

This invention was made in order to solve such conventional problems, and is a damper device in which the drive system is not exposed to the air flow in the air passage, has low pressure loss, has reliable closing, and has relatively low power consumption. The goal is to obtain.

・“Means for Solving the Problems” A damper device according to one system of the present invention uses a drive motor provided outside the cylinder forming the air passage to move the cylinder inside the cylinder forming the air passage in the direction of the center line. The support shaft, which is supported so as to be able to move, is slid through a connecting rope, and the blade fixed to the support shaft is moved away from an opening at one end of the cylindrical body, thereby opening the opening.

Further, in the pond damper device according to the present invention, in the above structure, a mounting plate for the connecting rope is provided on the support shaft, and a kite plate is provided in the sliding range of the plate for regulating the rotation of the mounting plate. It is.

Further, in the pond damper device according to the present invention, the support shaft is supported by a bearing supported by the support leg so as to be able to slide in the center line direction within the cylinder forming the air passage. A reinforcing straightening blade is integrally formed by bending the edge thereof, a blade is provided on the support shaft to close an opening on one end side of the cylinder, and a drive motor is provided outside the air passage formed by the cylinder. The drive motor and the support shaft are connected by a connecting cable suspended from a pulley.

Further, in a further damper device according to the present invention, in the damper device having each of the above-mentioned configurations, the outer circumferential portion of the blades enters into the opening of the cylindrical body when the damper device is closed.

Furthermore, still another damper device according to the present invention is one in which the support shafts of the damper devices having the above-mentioned configurations are always urged by a spring in the direction of closing the blades.

[Function] In the damper device of the present invention, the drive motor provided outside the cylinder forming the air passage moves the support shaft supported in the direction of the center line inside the cylinder forming the air passage through the connecting rope. By sliding, the blade fixed to the support shaft can be moved away from the opening at one end of the cylindrical body in the direction of the center line, and the opening can be opened.

In addition, in the pond damper device of the present invention, the rotation of the mounting plate that accommodates the connecting cable attached to the support shaft is restricted by the guide plate provided in the sliding range, so that when the support shaft slides, the mounting plate accommodates the connecting cable. And the blades will not be displaced in the rotational direction.

Furthermore, in another damper device of the present invention, reinforcing rectifying blades are integrally formed on the support legs that support the bearings that support the support shafts, so that the strength of the support legs is improved and the air flow in the air passage is rectified. This will make it easier to achieve this goal.

Furthermore, in another damper device of the present invention, the outer circumferential portion of the blade enters into the opening of the cylindrical body when closed;
Since there is no gap, the closed state of the part becomes airtight.

Furthermore, in another damper device of the present invention, since the support shaft is always biased by a spring in the direction of closing the blades, the support shaft is slid by the spring force of the spring, and the blades are moved to lock and elastically It will be kept closed.

[Embodiment] Each of the drawings shows an embodiment of a damper device according to the present invention. That is, the damper device of this example is
An opening/closing member for opening and closing the air passage is attached to a cylindrical body l forming a linear air passage, and a geared motor 2 for driving the opening/closing member is provided outside the air passage. A flange 3 is provided at one end of the cylindrical body 1, with a portion (in the illustrated example, the upper portion) formed to have a large overhang. A T-shaped support leg 4 is formed on the flange 3 and includes a portion that crosses the diameter line of the opening of the cylindrical body 1 and a portion that extends vertically downward from the center portion. A reinforcing straightening blade 5 is integrally formed on this support leg 4 by bending its end edge forward. The reinforcing straightening blades 5 make the supporting legs 4 into a channel type or an angle type with high strength, and at the same time function to straighten the airflow passing through the part. A bearing 6 is mounted on the center line of the cylindrical body 1 of the support leg 4, and a cylindrical case 7 with one end closed and containing the bearing 6 holds the interlocking end on the center line of the cylindrical body 1. It is fixed to the support lj4 toward the front end (the left end in the cross-sectional view).

An opening flange 8 having an opening wider than the opening of the cylinder 1 is provided on the front side of the flange 3 of the cylinder 1. A support shaft 9 is inserted into the memory case 7 and is supported by a bearing 6 and can slide on the center line of the case 7. The tip side of this support shaft 9 extends from the bearing 6 mounted at the center of the support leg ↓ to the center of the opening flange 8, and its periphery touches the opening of the opening flange 8 at its tip, closing the opening in the shape of a lid. A blade 10 serving as a sealing mouthpart-shaped opening/closing member is fixed at its center.

As shown in FIG. 4, a mounting plate 12 having protrusions 11 projecting forward on the upper side and left and right is attached to the end side of the support shaft 9 inside the case 7 and is prevented from being removed by nuts 13. A spring 4 is interposed between the mounting plate 12 and the inner end surface of the case 7 of the bearing 6, and the spring force of the spring 14 causes the blades 10 to hit the opening of the opening flange 8. It is pushed back to the position where it is partially densely imaged. Further, the support leg 4 includes a pair of opposing guide plates 15 that extend parallel to the center line in close proximity to the left and right protrusions 11 of the mounting plate 12 mounted on the support @ 9 in the case 7.
is installed in a cantilevered manner. This guide play 1~
15 restricts rotational displacement of the mounting plate 12 and rotation of the blade 10 together with its support shaft 9.

The geared motor 2 and a cover 2A covering a live part are mounted on the upper side of the flange 3 with a larger protrusion. A motor pulley 16 is attached to the output shaft of the geared motor 2, and the motor pulley 16 and the protrusion 11 on the upper part of the mounting plate 12 attached to the support shaft 9 are connected by a connecting wire 17. The connecting wire 17 is connected by a pulley 18 attached to the upper part of the support leg 4 so that the mounting plate 12 is substantially perpendicular to the geared motor 2 [Ell].

The vane 10 is the main part of the damper function that opens and closes the air passage.
Regarding this, airtightness during closing can be maintained even if a packing material 19 is placed on the edge of the opening flange 8 and the edge of the blade 10 comes into contact with this as shown in FIG.
As shown in FIG. 5, if the entire opening of the opening flange 8 is constructed to fit into the opening at the time of closing, the airtightness of the closing portion can be sufficiently maintained. In addition, in the figure, the code|symbol 20 is a wire guard attached to the pulley 18, 21 is a terminal block, and 2
2 is a micro switch.

The damper device configured as described above is attached to an air supply duct or the like so as to be interlocked with, for example, a ventilation fan. That is, when the ventilation fan is turned on, the damper device is also energized, the guard motor 2 rotates, the motor pulley 16 rotates from point A to point B, and winds up the connecting wire 17. As the connecting wire 17 is wound up, the support shaft 9 is pulled forward against the bias of the spring 14, and the blades 10 fixed to the end of the support shaft 9 are separated from the opening of the opening flange 8 in the direction of the center line. The opening is opened. When the guard motor 2 rotates to point B, an electric signal of 100 cm is output from the NC of the microswitch 22, and a lamp indicating the open state is lit. The rotation of the guard motor 2 is stopped by a switch inside the guard motor 2 when it rotates a little beyond point B, but the coil in the guard motor 2 continues to be energized, and the flange of the guard motor 2 is maintained in the closed state. Therefore, the blades 10 are also maintained in an open deaf state. When the ventilation fan is turned off, the damper device is turned off, the clutch is disengaged, the support shaft 9 is pulled back by the spring force of the spring 11, and the blades 10 abut against the opening, closing the opening a+. The motor pulley 16 returns to its original state and becomes the initial state.

In this damper device, the blades 10 do not rotate L, but move linearly to open and close, so there is no gap in the closed state. In addition, there is no geared motor 2 that drives the blade 10f in the air passage, and the pressure loss in the slanted air passage, which transmits the driving force to the support shaft 9 through the connecting wire 17, is small, and there is no f! It requires less electric power than rotary ring and maid.

[Effects of the Invention] As described above, according to the damper device of the present invention, the drive motor provided outside the cylinder forming the air passage supports the support in the direction of the center line inside the cylinder forming the air passage. By sliding the shaft through the connecting rope, the blade fixed to the support shaft can be moved away from the opening at one end of the cylinder in the direction of the center line, opening the opening and reducing the pressure loss in the air passage. , and power consumption is also reduced.

Further, according to another damper device of the present invention, since the rotation of the mounting plate to which the connecting cable attached to the support shaft is attached is restricted by the guide plate provided in its sliding range,
The support shaft and the blades are prevented from being displaced in the rotational direction during sliding, and in addition to the effects of the device described above, the operation of the blades can be stabilized.

Furthermore, according to another damper device of the present invention, the reinforcing rectifying blades are integrally formed especially on the support leg that supports the bearing that supports the support shaft, so that the strength of the support leg is improved and the air passage is improved. It also becomes possible to rectify the airflow, reducing pressure loss in the air passage and reducing power consumption.

Furthermore, according to another damper device of the present invention, the outer circumferential portion of the blade enters into the open part of the cylinder when the blade is closed;
Since there is no gap, the closed state of the part in particular becomes airtight, and the degree of sealing becomes high.

Furthermore, according to the pond damper device of the present invention, since the support shaft is always biased by the spring in the direction of closing the blade, the support shaft can be slid by the spring force of the spring and the blade can be closed. At the same time, the blades can be closed and held in a stable state using only one elastic force.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing one embodiment of a damper device according to the present invention, FIG. 2 is a front view thereof, FIG. FIG. 5 is a sectional view of the damper device of Ike's invention, and FIG. 6 is an electric circuit diagram of the same damper device. In the figure, 1 is a cylindrical part, 2 is a geared motor, 4 is a support leg, 5 is a reinforced rectifier blade, 6 is a bearing, 7 is a case, 8 is an opening flange, 9 is a support shaft, 10
12 is a blade, 12 is a retaining plate, 14 is a spring, 15 is a guide plate, 17 is a connecting wire, and 18 is a pulley. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa (and 2 others) Figure 2, Figure 11! ! Figure 3 5rI! J Figure 6

Claims (5)

[Claims] (1) A support shaft is provided in the cylinder forming the air passage so as to be able to slide in the direction of the center line, and the support shaft is provided with a blade that closes an opening at one end of the cylinder. A drive motor is provided outside the air passage formed by the body, and the drive motor and the support shaft are connected by a connecting cable hung on a pulley, and the rotation of the drive motor causes the support shaft to slide through the connecting cable. A damper device characterized in that the damper device is configured to move the blades away from an opening of a cylindrical body to open the opening. (2) A support shaft is provided in the cylinder forming the air passage so as to be able to slide in the direction of the center line, and the support shaft is provided with a blade for closing an opening at one end of the cylinder, and the cylinder A drive motor is provided outside the air passage formed by the body, and the drive motor and the mounting plate fixed to the support shaft are connected by a connecting cable hung on a pulley, and the rotation of the drive motor causes the air to flow through the connecting cable. The blade is moved away from the opening of the cylindrical body to open the opening by sliding the support shaft, and a guide plate is provided within the sliding range of the mounting plate to restrict rotation of the mounting plate. A damper device characterized by being provided with. (3) Inside the cylindrical body that forms the air passage, a support shaft is supported by a bearing supported by a support leg that allows sliding in the center line direction, and the support leg is reinforced and rectified by bending the end edge. A wing is integrally formed, a blade is provided on the support shaft to close an opening on one end side of the cylinder, a drive motor is provided outside the air passage formed by the cylinder, and the drive motor and The support shaft is connected to the above-mentioned support shaft by a connecting cable hung on a pulley, and the rotation of the drive motor causes the supporting shaft to slide via the connecting cable, causing the blade to move away from the opening of the cylinder body and opening the opening. A damper device characterized by being configured as follows. (4) The damper device according to claim 1, 2, or 3, wherein the outer circumferential portion of the blade is configured to fit into the opening of the cylindrical body when closed. (5) Claim 1 or Claim 2, characterized in that the support shaft is always biased by a spring in a direction that closes the blade.
Or the damper device according to claim 3 or 4.