JP2891015B2 - Damper device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper device having a fire prevention structure which is mounted on a wall of a house or the like to prevent a fire generated in a house from spreading to the outside.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a diagram showing a conventional damper device shown in Japanese Unexamined Patent Publication (Kokai) No. 1-2003, in which 1 is a wall of a house 2, 3 is a wall hole formed in this wall, 4 is a duct pipe inserted into the wall hole, and 5 is A tubular body inserted into the duct pipe and having a ventilation passage 6 inside. Reference numeral 7 denotes a mounting member provided in the cylinder, and reference numeral 8 denotes a damper provided on the mounting member. The damper is rotatably mounted via a screw 8a so as to close the ventilation passage 6. Reference numeral 9 denotes a weight provided at one end of the damper, and reference numeral 10 denotes a temperature fuse, which is connected to the other end of the damper 8 and the inner wall of the cylindrical body 5, and holds the ventilation passage 6 in an open state. Reference numeral 11 denotes a vent cap mounted on the cylinder 5.

[0003] The conventional damper device is configured as described above. When a fire occurs in the house 2, heat exceeding the allowable temperature fuse temperature is applied to the thermal fuse 10, and the thermal fuse 10 is separated by fusing. The holding function of the damper 8 is lost, and the damper 8 is rotated by the weight 9 to close the inside of the cylinder 5.

[0004]

In the conventional damper device described above, when the thermal fuse 10 is separated, the thermal fuse 10 cannot be replaced without removing the vent cap 11 for maintenance. Was bad. Further, the vent cap 11
Is attached to the outer wall of the house 2, the vent cap 1
There is a problem that rainwater enters through the opening 1 and rust is generated in the operating portion of the thermal fuse 10 and the damper 8, and the rust causes malfunction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a damper device that can easily maintain a thermal fuse, does not infiltrate rainwater into a cylindrical body, and can secure a stable operation function for a long time. It is the purpose.

[0006]

SUMMARY OF THE INVENTION A damper device according to the present invention includes a cylinder having a ventilation passage, a shaft support provided in the cylinder, and a shaft inserted through the shaft support. A damper that seals one of the cylindrical bodies, a wire connection plate mounted on an end of the shaft, and wound around the shaft so as to be located between the wire connection plate and a shaft support, A first elastic member for urging the damper in a closing direction, and a hoisting motor mounted on the outer wall of the cylinder and winding up a wire connected to the wire connection plate, and a through hole is formed in the cylinder. A mounting plate having a size larger than that of the through hole is attached to the through hole, and the first holding rod for holding one of the thermal fuses disposed in the cylinder and the other of the thermal fuse are held on the mounting plate. A second plate provided on the outer wall of the mounting plate and having an outward biasing force;
And a switch for turning off the power of the hoist motor by the urging force of the second elastic member.

Further, a thermal fuse, a first retaining rod, a second retaining rod, and a second elastic member for retaining the thermal fuse are integrally assembled on a mounting plate.

[0008]

According to the present invention, there is provided a cylindrical body having a ventilation path,
A shaft support portion provided in the cylinder, a damper having a shaft inserted through the shaft support and sealing one of the cylinders, and a wire connection plate mounted on an end of the shaft; A first elastic member wound around the shaft so as to be located between the wire connection plate and the shaft support, and biasing the damper in a closing direction;
A hoisting motor mounted on the outer wall of the cylindrical body and winding up a wire connected to the wire connecting plate; a through-hole is formed in the cylindrical body; and a mounting plate having a larger size than the through-hole is formed in the through-hole. A first holding rod for holding one of the thermal fuses disposed in the cylinder on the mounting plate and the other of the thermal fuses are provided on an outer wall of the mounting plate and have an outward biasing force. A second holding rod connected to the second elastic member is mounted, and a switch for turning off the power of the hoist motor by the urging force of the second elastic member is provided. When the wire is wound up and the damper moves to the open state during operation, the temperature inside the cylinder becomes abnormal due to fire, etc., and when the thermal fuse is separated, the second elastic member presses the switch and the power to the hoist motor is turned off. And the damper is a first elastic member. Return at the urging force to the original, the cylindrical body is closed.

Further, since the temperature fuse and the first holding rod, the second holding rod, and the second elastic member for holding the thermal fuse are integrally assembled on the mounting plate, the mounting plate is formed as a cylinder. Thermal fuse to cylindrical body to be attached to body,
The first holding rod, the second holding rod, and the second elastic member can be mounted.

[0010]

【Example】

Embodiment 1 FIG. FIGS. 1 to 6 show a first embodiment of the present invention. In the drawings, reference numerals 1 to 4 denote the same or corresponding parts as in the above-described conventional example, and reference numeral 20 denotes a cylindrical body forming an outer casing of a damper device 21; A ventilation path 22 is provided inside. Reference numeral 23 denotes a fire wall, which is connected to one end of the cylindrical body 20 and has a larger diameter than the cylindrical body 20. Reference numeral 24 denotes a shaft support portion, which is provided in the cylindrical body 20.
A bearing support plate 25 is provided between the inner walls of the cylindrical body 20 and a bearing 27 is formed through a center of the bearing support plate and is mounted with a screw 26 and formed of, for example, a sleeve. Numeral 28 denotes a damper, which comprises a disk-shaped damper plate 29 which is in close contact with the fire wall 23 at the end and seals the cylindrical body 20, and a shaft 31 connected to the damper plate via a shaft mounting plate 30. This shaft is inserted through the bearing 27. Reference numeral 32 denotes a wire connection plate provided at the end of the shaft 31, which is formed of a substantially L-shaped piece connected to the shaft 31 by screws 26. A pulley 33 is rotatably provided on the bearing support plate 25 via a guide 34. A first elastic member 35 is formed of, for example, a helical spring, is wound around the shaft 31 so as to be located between the bearing 27 and the wire connection plate 32, is compressed as the shaft 31 moves, and rebounds. The damper plate 29 is urged in the closing direction by force. Reference numeral 36 denotes a cover, which is substantially U-shaped and has the shaft 3
1 and the wire connection plate 32 are fixed to the bearing support plate 25 with screws 26 so as to cover the wire connection plate 32.

Reference numeral 37 denotes a grill comprising a box surrounding the fire wall 23, a bottom plate 38 sandwiched between the end of the cylindrical body 20 and the fire wall 23, and a front cover 39 fixed to the bottom plate with screws 26.
And Reference numeral 40 denotes a hoist motor, which is provided in the grill 37 and is connected to the wire connecting plate 32.
1 is wound up via a pulley 33, and when the power supply is cut off, the internal fixing function at the time of winding up is released. Reference numeral 42 denotes a through hole, which is formed in a long hole shape above the cylindrical body 20. Reference numeral 43 denotes a mounting plate, which is larger than the through hole 42 so as to cover the through hole 42, has screw holes 44 at both ends, is attached to the cylindrical body 20 with screws 26, and has a cutout recess 45 at the upper end. ing. Reference numeral 46 denotes a temperature fuse, which is formed by fusing and fixing a plate A48 and a plate B49 made of, for example, a phosphor bronze plate provided with a long hole 47 for attachment with a low-temperature solder blown at, for example, 120.degree.
Reference numeral 50 denotes a first holding rod, both ends of which are bent into an L shape, one end of which is engaged with the mounting long hole 47 of the plate A48 of the thermal fuse 46, and the other end of which is joined to the inner wall of the mounting plate 43. I have. Reference numeral 51 denotes a second elastic member, which is a plate spring having an outward biasing force and is formed in an arc shape. One of the fixing portions 52 and the other of the caulking portions through which a second holding rod to be described later are rotatably inserted. 5
3 and the fixing portion 52 is fixed to the mounting plate 4 with the screw 26.
3 is fixed to the outer wall. 54 is a second holding rod, both ends of which are bent into an L shape, and one end of which is a plate B of the thermal fuse 46.
49, and the other end is cutout recess 45.
And is rotatably inserted into the caulking portion 53.
Thus, the thermal fuse 46 is stretched in the cylindrical body 20 by the urging force of the second elastic member 51 outward.

Reference numeral 55 denotes a switch, which comprises, for example, a limit switch 57 having a limit contact 56, which is connected in conjunction with the hoisting motor 40 as shown in FIG. Upper motor 4
0 is turned off. This switch is provided in the grill 37 so that the limit contact 56 is pressed by the urging force of the caulking portion 53 of the second elastic member 51.

In the damper device according to the first embodiment configured as described above, the shaft 31 is inserted through the bearing 27 into the cylindrical body 20 having the fire wall 23, the bottom plate 38, and the shaft support 24 so that the damper 28 is formed. Attach, and the first elastic member 35 is wound around the shaft 31. Next, a wire connection plate 32 is attached to the end of the shaft 31, and a wire 41 is connected to the wire connection plate 32 via a pulley 33 from a hoisting motor 40 provided on a bottom plate 38. Then, the front cover 39 is attached to the bottom plate 38 and the cover 36 is attached to the bearing support plate 25. Next, the plate A4 of the thermal fuse 46 is mounted on the mounting plate 43.
8, the first holding rod 50 is attached to the plate B49, and the second holding rod 54 is attached to the plate B49. The other end of the second holding rod 54 is inserted into the caulking portion 53 of the second elastic member 51, thereby forming the temperature fuse. 46 can be attached to the mounting plate 43, and the thermal fuse 46 and the mounting plate 43 are integrated. Next, the temperature fuse 46 is inserted through the through-hole 42 and disposed in the cylinder 20, and the mounting plate 43 is attached to the cylinder 20 with the screw 26 to assemble the damper attachment 21. To the wall hole 3 of the house 2.

Then, the wire 41 is wound up by the operation of the hoist motor 40, the damper 28 is separated from the fire wall 23, and is opened, and the power of the hoist motor 40 is turned off.
As a result, the fixing function of the hoist motor 40 is released, and the hoist motor 40 is free. The urging force of the first elastic member 35 returns the damper 28 to its original position, and the damper 28 is closed. Thereby, when the thermal fuse 46 is blown by a fire or the like, the limit contact 56 is turned on by the urging force of the second elastic member 51 as shown in FIG. The damper 28 is turned off and the damper 28 is closed by the release of the fixing function of the hoist motor 40 and the first elastic member 35, and the cylindrical body 20 is sealed by the damper 28.

In order to return the damper device 21 again, the mounting plate 43 is removed from the cylinder 20 and a new thermal fuse 46 is mounted on the mounting plate 43 again and assembled. Then, the mounting plate 43 can be easily replaced by mounting the mounting plate 43 to the cylindrical body 20.

Further, since the mounting plate 43 is formed larger than the through hole 42, the through hole 42 is completely hidden, there is no leakage, there is no problem with respect to the fire prevention function, and more safety can be secured.

Embodiment 2 FIG. Although the second elastic portion 51 is formed of a leaf spring in the first embodiment, a plate 60 is provided at the other end of the second holding rod 54 as shown in FIG. The mounting plate 43 is inserted directly, and the plate 60
The coil spring 61 is wound around the second holding rod 54 so as to be located between the second holding rod 54 and the mounting plate 43. Thus, when the temperature fuse 46 is blown, the plate 60 presses the limit contact 56 by the urging force of the coil spring 61, so that the same function as that of the first embodiment can be secured, and compared with the leaf spring structure of the first embodiment. The operation can be performed linearly and smoothly, and the size of the mounting plate 43 can be reduced.

Embodiment 3 FIG. Also, as shown in FIG. 8, in a rectangular damper device 70 that operates electrically such as a geared motor (not shown), a thermal fuse through-hole 72 and a mounting plate 73 that is larger than the thermal fuse through-hole are formed on the fire prevention wall surface 71. By using the same components as in the first embodiment, the same effects as in the first embodiment can be obtained.

[0019]

As described above, the present invention has a cylinder having an air passage, a shaft support provided in the cylinder, and a shaft inserted through the shaft support. A damper for sealing one side, a wire connection plate mounted on the end of the shaft, and a wire wound around the shaft so as to be located between the wire connection plate and the shaft support, and closing the damper in the closing direction. A first resilient member for urging the wire, and a hoisting motor mounted on the outer wall of the cylinder and winding up a wire connected to the wire connection plate. A mounting plate having a size larger than that of the through hole is mounted in the hole, and a first holding rod for holding one of the thermal fuses disposed in the cylinder and the other of the thermal fuse are mounted on the mounting plate and the outer wall of the mounting plate. And a second elastic member connected to a second elastic member having an outward biasing force. A temperature fuse is arranged via a mounting plate in the ventilation passage of the cylindrical body by providing a switch for mounting the rod and turning off the power of the hoist motor by the urging force of the second elastic member. The maintenance of the thermal fuse can be facilitated by attaching and detaching the mounting plate, and the thermal fuse separating operation is reliably linked to the damper operating switch, so that the reliability of the damper operation is further improved.

Further, since the temperature fuse and the first holding rod, the second holding rod, and the second elastic member for holding the thermal fuse are integrally assembled on the mounting plate, The temperature fuse can be attached to the cylindrical body only by being attached to the body, so that the assemblability becomes easier and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing Embodiment 1 of the present invention.

FIG. 2 is a front sectional view showing the first embodiment of the present invention.

FIG. 3 is an exploded perspective view of a thermal fuse showing the first embodiment of the present invention.

FIG. 4 is a perspective view showing the mounting of the thermal fuse according to the first embodiment of the present invention.

FIG. 5 is a perspective view showing a state during a thermal fuse operation according to the first embodiment of the present invention.

FIG. 6 is a connection diagram showing the first embodiment of the present invention.

FIG. 7 is a perspective view showing a mounting of a thermal fuse according to a second embodiment of the present invention.

FIG. 8 is a partial perspective view showing a third embodiment of the present invention.

FIG. 9 is a sectional view showing a conventional damper device.

[Explanation of symbols]

 Reference Signs List 20 cylindrical body 21 damper 22 ventilation path 24 shaft support portion 28 damper 31 shaft 32 wire connection plate 35 first elastic member 40 hoisting motor 41 wire 42 through hole 43 mounting plate 46 temperature fuse 50 first holding rod 51 second Elastic member 54 second holding rod 55 switch

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24F 13/12 F24F 13/10

Claims (2)

(57) [Claims] A cylindrical body having a ventilation path, a shaft support provided inside the cylindrical body, a damper having a shaft inserted through the shaft support and sealing one of the cylindrical bodies; A wire connecting plate attached to an end of the shaft; and a first elastic member wound around the shaft so as to be located between the wire connecting plate and the shaft support, and biasing the damper in a closing direction. A member and a hoisting motor mounted on the outer wall of the cylindrical body and winding up a wire connected to the wire connection plate, a through-hole is formed in the cylindrical body, and the through-hole is larger than the through-hole. A first holding rod for holding one of the thermal fuses disposed in the cylinder and the other of the above-mentioned thermal fuses are provided on an outer wall of the mounting plate, and the mounting plate is attached to the mounting plate. A second holding rod connected to a second elastic member having a force is mounted, and the second holding rod is connected to the second holding member. A switch for turning off the power of the hoist motor by the biasing force of the elastic member. 2. The thermal fuse according to claim 1, wherein the thermal fuse and a first retaining rod, a second retaining rod, and a second elastic member for retaining the thermal fuse are integrally assembled on the mounting plate. 2. The damper device according to 1.