JP2000121112A - Shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the assembling work of shutter mechanism for preventing spread of fire by holding the upper part of a first working plate at the first working plate holding part of a cam plate and engaging a temperature fuse with each raised part. SOLUTION: When the lever 27a of an opening/closing means 27 is pulled, a second working plate 17 is pulled downward and the motion of first and second working plates 15, 17 is restricted by means of a temperature fuse 23, At the same time, a shutter connecting plate 13 is pulled downward and a shutter 10 is turned about a fulcrum, i.e., a supporting shaft 9, and held in open state. The first working plate 15 is then pulled upward by means of a reset spring and the engaging cut 20 in a cam plate 19 moves along the raised part 16 of the first working plate 15 to turn the cam plate 19 upward thus releasing the first working plate holding part 22. Consequently, the shutter connecting plate 13 is pulled upward and the shutter 10 is closed gravitationally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter device for use in a ventilating fan or a damper device for preventing a spread of fire when a flame is generated.

[0002]

2. Description of the Related Art In recent years, a shutter device used for a ventilating fan or a damper device for preventing the spread of fire when a flame is generated has a complicated shutter opening / closing mechanism and a large number of parts. There is a need for a simple structure.

As an example of a conventional shutter device for preventing the spread of fire, the structure of a shutter device incorporated in a ventilation fan will be described with reference to FIGS.

As shown in FIG. 1, an elongated shutter support plate 102 is provided inside a ventilation fan frame 101, and a shutter
An arm 104 having both ends of each shutter 103 bent is supported on a support plate 102 by a support shaft 105, and a rear end of each arm 104 is supported by a shaft 106 to form an L-shaped shutter connection plate 107. And a cam plate 108 having a hole at one end of the shutter connection plate 107 is supported by a screw-shaped shaft 109.
10 and the claw 111 of the cam plate 108 are locked by a thermal fuse 112 having holes at both ends. Further, the cam plate operating spring 115 is locked in the hole of the cut-and-raised portion 113 on the upper portion of the shutter connecting plate 107 and the hole of the cut-and-raised portion 114 of the cam plate 108. Further, a hole 116 of a cut-and-raised portion provided at one end of the shutter connecting plate 107 and a hole 1 provided at one end of a corner plate 117 of the ventilation fan frame 101.
18 is latched by a shutter spring 119, and the shutter opening / closing wire 120 is locked to the wire holding portion 121.

In the above configuration, when a fire occurs, the temperature inside the ventilation fan frame 101 rises, and the temperature fuse 112
Is blown off and the cam plate 1 is moved by the cam plate operating spring 115.
08 is lifted so as to rotate upward about the shaft 109 with the shutter connecting plate 107, released from the shutter opening / closing wire 120, and the shutter 103 is closed to prevent the flame from burning outside or indoors. It will be.

[0006]

In such a conventional shutter device, in order to hold the cam plate 108, the cam plate 108 and the shutter connecting plate 107 are connected to a screw shaft 109.
And the temperature fuse 112
In order to rotate the cam plate 108 upward at the time of fusing, a cam plate operating spring 115 having a strong operating force is required, so that the cam plate 10
8 and the shutter connecting plate 107, the cam plate operating spring 115
Since a relatively strong force is required when applying the pressure, it also takes time, so that the assemblability is very poor.

An object of the present invention is to solve the above-mentioned problems, and a first object of the present invention is to provide a shutter device which simplifies the assembly of a shutter mechanism for preventing burning.

A second object is to provide a shutter device having a shutter mechanism for preventing the spread of fire, and a shutter which does not prevent the spread of fire.
An object is to share parts with a shutter device having a mechanism.

A third object of the present invention is to prevent the shutter from being opened and closed by the outside air after the thermal fuse is blown, thereby preventing the spread of fire.

[0010]

According to the shutter device of the present invention, there is provided a box-shaped frame body opened in the front-rear direction, a shutter-supporting plate provided in the box-shaped frame body in a vertical direction, and A shutter rotatably supported on the shutter support plate via a support shaft, a shutter connection plate movably connected to the shutter via a shaft, and a connection shaft connected to the shutter connection plate A first operating plate provided with a cut-and-raised portion at one end, a second operating plate provided with a cut-and-raised portion at one end, and an engagement notch portion with a lower portion cut off at one end, A hole is provided at the other end, and a cam plate provided with a first operating plate holding portion above the engagement notch is provided, and the engagement notch of the cam plate, the hole is provided. The cut and raised portion of the first operating plate and the cut and raised portion of the second operating plate The upper portion of the first operating plate is held by the first operating plate holding portion of the cam plate, and the temperature fuse is engaged with each of the cut-and-raised portions, whereby the first operating plate and the first operating plate are held together. This is a shutter device for fixing the two operation plates with a temperature fuse.

According to the present invention, the cam plate and the temperature fuse are not required by the first plate and the second plate.
It is possible to assemble simply by inserting and fixing the cut-and-raised portion of the operating plate, and it is possible to provide a shutter device in which the assembling of the shutter mechanism for preventing the spread of fire is simplified.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a box-shaped frame having an opening in the front-rear direction, and a shutter-supporting plate provided vertically inside the box-shaped frame. A shutter rotatably supported on the shutter support plate via a support shaft, a shutter connection plate movably connected to the shutter via a shaft, and a connection to the shutter connection plate. A first operating plate that is locked via a shaft and has a cut-and-raised portion at one end, a second operating plate with a cut-and-raised portion at one end, and an engagement notch with a cutout at the lower end at one end ,
A hole is provided at the other end, and a cam plate provided with a first operating plate holding portion above the engagement notch is provided, and the engagement notch of the cam plate, the hole is provided. The cut-and-raised portion of the first working plate and the cut-and-raised portion of the second working plate are connected to each other, and the first working plate holding portion of the cam plate holds the upper portion of the first working plate. The first operating plate and the second operating plate are fixed by the temperature fuse by engaging the temperature fuses with the cut-and-raised portions, respectively, for the purpose of preventing the spread of fire. This has the effect of simplifying the assembly of the shutter mechanism.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

(Embodiment 1) As shown in FIG. 1, a box-shaped frame body 1 having an indoor side and an outdoor side opened, and a motor for driving a blade 2 inside the box-shaped frame body 1. An orifice 6 serving as a wind tunnel for the blades 2 is provided in the indoor opening 5 of the box-shaped frame 1, and an outdoor opening of the box-shaped frame 1 is provided. A shutter support plate 8 is provided on the inside of the box-shaped frame 1 in the longitudinal direction, and a shutter 10 for preventing the inflow of outside air is provided on the shutter support plate 8.
The arm portions 11 at both ends of the shutter 10 are supported by the support shaft 9 so that the arm portions 11 can rotate about the support shaft 9 provided at the center. The arm 11 of the shutter 10
The shutter connecting plate 13 is movably locked via a shaft 12, and the first operating plate 15 is fixed via a connecting shaft 14 so as to be substantially perpendicular to the shutter connecting plate 13.

Then, as shown in FIG. 2, the first operating plate 1
5 has a small cut-and-raised portion 16 at one end and a small cut-and-raised portion 18 at the other end of a second operating plate 17 having a hole at one end, and a lower portion of one end of a cam plate 19 is cut off. It is inserted into the engagement notch 20 and the hole 21 at the other end, respectively. Further, fixing holes 29 at both ends of the plate-shaped temperature fuse 23 are provided.
The cut-and-raised portion 16 of the first operating plate 15 and the second operating plate 1
7 and the cut-and-raised portion 18 is inserted, and the cut-and-raised portion 16 and the cut-and-raised portion 18 are bent outward and fixed. The first operating plate 15 has a spring locking portion 2 for locking a spring.
4, and has an L-shaped cut-and-raised portion 25 on the inner wall of the box-shaped frame 1 on the connecting plate side, and a return spring 26 is hooked on each. The hole 28 at one end of the second operating plate 17
Is inserted with the lever 27a of the opening / closing means 27.

Although the opening / closing means 27 uses an interlocking type opening / closing means by a pull cord operation, there is no difference in the operation and effect of the present invention even if an electric opening / closing means is used.

In the above construction, the lever of the opening / closing means 27 is provided.
When the power is turned on, the power is turned on when the power is turned on.
27a is pulled, the second operation plate 17 is pulled down, and the movement of the second operation plate 17 and the first operation plate 15 is restrained by the temperature fuse 23, and at the same time, the first operation of the cam plate 19 is performed. The plate holding portion 22 holds the upper portion of the first operating plate 15 and pulls it down, and the shutter-connecting plate 13
Is pulled down, and the shutter 10 is rotated about the support shaft 9 as a fulcrum to be opened and held. Next, as shown in FIG. 3, the temperature inside the box-shaped frame 1 rises, and the temperature
When the screw 23 is blown, the restraint between the first operating plate 15 and the second operating plate 17 is released, and the first operating plate 15 is pulled upward by the return spring 26, and at the same time, the cam plate 19 is released.
The cam plate 19 is pivoted upward about the cut-and-raised portion 18 of the second operating plate 17 while the engagement notch 20 of the first along the cut-and-raised portion 16 of the first operating plate 15. The pressing of the first operation plate holding part 22 is released. Then, the shutter-connecting plate 13 is pulled up by the spring force of the return spring 26, and the shutter 10 is closed by its own weight.

As described above, according to the shutter device of the first embodiment of the present invention, when assembling the shutter mechanism,
The assembly of the cam plate 19 and the temperature fuse 23 is the first
The cut-and-raised portion 16 and the cut-and-raised portion 18 of the operation plate 15 and the second operation plate 17 are fixed to the fixing holes 29 of the temperature fuse 23.
Since the configuration is such that the assembly can be performed simply by fitting the cam plate, the assembling work is simplified, and the number of parts can be reduced because the spring for operating the cam plate and the rotation support shaft of the cam plate are not used.

(Embodiment 2) As shown in FIG. 4, Embodiment 2 differs from Embodiment 1 in that a fan motor and an orifice are not provided in the frame 1. , And other components are the same as those in the first embodiment.
Also, the operation when the temperature fuse 23 shown in FIG. 5 is blown and the method of assembling the shutter device are the same as those in the first embodiment, and a description thereof will be omitted. Therefore, the operation and effect relating to the assemblability of the shutter mechanism are the same as in the first embodiment.

(Embodiment 3) As shown in FIG. 6, a box-shaped frame 1 having an indoor side and an outdoor side opened, and a motor for driving a blade 2 inside the box-shaped frame 1. An orifice 6 serving as a wind tunnel for the blades 2 is provided in the indoor opening 5 of the box-shaped frame 1, and an outdoor opening of the box-shaped frame 1 is provided. A shutter support plate 8 is provided on the inside of the box-shaped frame 1 in the longitudinal direction, and a shutter 10 for preventing the inflow of outside air is provided on the shutter support plate 8.
The arm portions 11 at both ends of the shutter 10 are supported by the support shaft 9 so that the arm portions 11 can rotate about the support shaft 9 provided at the center. The arm 11 of the shutter 10
The shutter connecting plate 13 is movably locked via a shaft 12, and the first operating plate 15 is fixed via a connecting shaft 14 so as to be substantially perpendicular to the shutter connecting plate 13. Then, as shown in FIG. 7, a locking portion 30 is formed above the engagement notch 20A of the cam plate 19A. First working plate 15
And a small-width cut-and-raised portion 16 at one end of the second plate 17 and a small-width cut-and-raised portion 18 at the other end of the second operating plate 17 having a hole at one end thereof. And the cut-and-raised portion 16 and the cut-and-raised portion 18 are bent inward and fixed. The first operating plate 15 has a spring locking portion 24 for locking a spring, and has an L-shaped cut-and-raised portion 25 on the shutter 10 side of the inner wall of the box-shaped frame 1, so that it can be returned. Hook 26 for each. Then, the lever 27a of the opening / closing means 27 is inserted into the hole 28 at one end of the second operation plate 17.

Although the opening / closing means uses an interlocking type opening / closing means by a pull cord operation, there is no difference in the operation and effect of the present invention even if an electric opening / closing means is used.

In the above configuration, the cut-and-raised portion 18 of the second operating plate 17 is inserted into the hole 21 of the cam plate 19A,
The cut-and-raised portion 16 of the operation plate 15 is inserted into the locking portion 30 formed above the engagement notch 20A of the cam plate 19A, and the cut-and-raised portion 16 and the cut-raised portion 18 are bent inward, respectively. By fixing the shutter device, a shutter device not intended to prevent the spread of fire can be manufactured.

As described above, according to the shutter device of the third embodiment of the present invention, the shutter which does not aim to prevent the spread of fire is performed.
Since the cam plate 19A is used at the time of manufacturing the device, parts can be shared with the shutter devices described in the first and second embodiments.

(Embodiment 4) As shown in FIG. 8, Embodiment 4 differs from Embodiment 3 in that a fan motor and an orifice are not provided in the frame 1. Other components are the same as in the third embodiment. Also, the method of assembling the shutter device is the same as in the third embodiment, and a description thereof will be omitted. Therefore, the operation and effect relating to the assemblability of the shutter mechanism are the same as in the third embodiment.

(Embodiment 5) As shown in FIGS. 9 and 10, the inner wall surface of the box-shaped frame 1 is engaged with the spring locking portion 24 of the first operating plate 15 when the shutter is closed. At the position, a first operating plate brake cut-and-raised portion 31 is provided.

In the above configuration, when the temperature fuse 23 is blown when a flame is generated, the first operating plate 15 is rotated upward by the spring force of the return spring 26 and the weight of the shutter 10. Then, the shutter 10 is closed. At this time, the first operating plate brake cut-and-raised portion 31 of the box-shaped frame 1 is
Since the shutter 10 is locked in the closed state by the engagement with the spring locking portion 24 of the operation plate 15, the flame is prevented from burning outside or indoors.

As described above, according to the shutter device of the fifth embodiment of the present invention, the first operating plate of the box-shaped frame 1 is located at the position where the first operating plate 15 engages with the spring locking portion 24. The provision of the brake cut-and-raised portion 31 locks the shutter 10 in the closed state, thereby preventing the flame from burning outside or indoors.

(Embodiment 6) As shown in FIG. 11, the first operating plate 15 in the closed state of the shutter on the inner wall surface of the box-shaped frame 1 having no fan motor and orifice provided therein. A first operating plate brake cut-and-raised portion 31 is provided at a position where it engages with the spring locking portion 24. Furthermore, shutter-1
The zero lock mechanism is the same as in the fifth embodiment, and a description thereof will be omitted.

The sixth embodiment differs from the fifth embodiment in that a fan motor and an orifice are not provided in the frame 1, and the operation and effect of the lock mechanism of the shutter 10 are different. This is the same as in the fifth embodiment.

[0030]

As described above, according to the present invention, a box-shaped frame body opened in the front-rear direction, a shutter support plate provided in the box-shaped frame body in a vertical direction, and the shutter A shutter rotatably supported on a support plate via a support shaft
A shutter connecting plate movably connected to the shutter via a shaft, and a first operating plate locked to the shutter connecting plate via a connecting shaft and having a cut-and-raised portion at one end. A second operating plate provided with a cut-and-raised portion at one end, an engagement notch with a lower portion cut at one end, a hole at the other end, and a second hole above the engagement notch. (1) a cam plate provided with an operation plate holding portion, wherein a cut-and-raised portion of the first operation plate and a cut of the second operation plate are provided in the engagement notch portion and the hole portion of the cam plate; And a first operating plate holding portion of the cam plate.
By holding the upper portion of the operating plate and engaging the temperature fuses with the respective cut-and-raised portions, the first
Since the shutter plate is configured to fix the operating plate and the second operating plate with the temperature fuse, when assembling the shutter mechanism, the assembly of the cam plate and the temperature fuse is performed in the first manner.
The assembly can be performed simply by engaging the temperature fuses with the cut-and-raised portions of the operation plate and the second operation plate, and the assembling operation is simplified, and the cam plate operation spring and the cam plate rotation support shaft are not used. Therefore, a shutter device capable of reducing the number of components can be provided.

Further, by providing a locking portion on the upper edge of the engagement notch of the cam plate, the first and second operating plates can be cut and raised inward without using a temperature fuse. By bending and fixing, it is possible to manufacture a shutter device that does not aim to prevent the spread of fire, and it is possible to share parts with a shutter device that aims to prevent the spread of fire.

Further, since the first operating plate brake cut-and-raised portion is provided on the inner wall surface of the box-shaped frame so as to engage with the spring locking portion of the first operating plate when the shutter is closed. 1
Since the operation plate is restrained from moving in the vertical direction and the shutter is kept in the closed state, it is possible to prevent the flame from burning out of the apparatus.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a shutter device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a method of assembling the shutter device.

FIG. 3 is a sectional view showing the operation of the shutter device when the thermal fuse is blown.

FIG. 4 is a cross-sectional view illustrating a configuration of a shutter device according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing the operation of the shutter device when the thermal fuse is blown.

FIG. 6 is a cross-sectional view illustrating a configuration of a shutter device according to a third embodiment of the present invention.

FIG. 7 is an exploded perspective view showing a method of assembling the shutter device.

FIG. 8 is a cross-sectional view illustrating a configuration of a shutter device according to a fourth embodiment of the present invention.

FIG. 9 is a sectional view showing a locked state of a shutter device according to a fifth embodiment of the present invention.

FIG. 10 is an enlarged perspective view showing a lock structure of a first operation plate of the shutter device.

FIG. 11 is a sectional view showing a locked state of a shutter device according to a sixth embodiment of the present invention.

FIG. 12 is a sectional view showing a configuration of a conventional shutter device.

FIG. 13 is a sectional view showing the operation of the shutter device when the shutter is opened.

FIG. 14 is a cross-sectional view showing the operation of the shutter device when the temperature fuse is blown.

FIG. 15 is an exploded perspective view showing a method of assembling the shutter device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box-shaped frame 8 Shutter-support plate 9 Support shaft 10 Shutter 12 shaft 13 Shutter-connection plate 14 Connection shaft 15 First operating plate 16 Cut-and-raised portion 17 Second operating plate 18 Cut-and-raised portion 19 Cam plate 19A Cam Plate 20 Engagement notch 20A Engagement notch 21 Hole 22 First operating plate holding part 23 Temperature fuse 24 Spring locking part 30 Locking part 31 First operating plate brake cut and raised part

Claims (3)

[Claims] 1. A box-shaped frame body opened in the front-rear direction, a shutter support plate provided in a vertical direction inside the box-shaped frame body, and the shutter-support plate is rotated via a support shaft. A shutter that is freely supported, a shutter connecting plate that is movably connected to the shutter via a shaft, and a shutter that is locked to the shutter connecting plate via a connecting shaft and has a cut-and-raised portion at one end. A first operating plate provided, a second operating plate provided with a cut-and-raised portion at one end, an engagement notch portion having a lower portion cut at one end, and a hole at the other end; A cam plate provided with a first operation plate holding portion above the notch portion, and a cut-and-raised portion of the first operation plate in the engagement notch portion and the hole portion of the cam plate; The cut-and-raised portion of the second operating plate is connected to each other, and the first operating plate holding portion of the cam plate is used to The first operation plate and the second operation plate are fixed by the temperature fuse by holding the upper portion of the first operation plate and engaging the temperature fuses with the cut-and-raised portions. Shutter device. 2. An engaging notch provided on an upper edge of an engagement notch of a cam plate, and a cut-and-raised portion of each of a first operating plate and a second operating plate is provided with a cam instead of a temperature fuse. By engaging the hole of the plate with the locking portion, the first operation plate and the second
2. The shutter device according to claim 1, wherein the shutter plate is fixed to the operation plate. 3. A spring engaging portion of the first operating plate in a shutter closed state is provided on an inner wall surface of the box-shaped frame, and the first operating plate brake is cut and raised so as to engage with the spring engaging portion. The shutter device according to claim 1, further comprising a portion.