JP2508152Y2 - Self-closing fire protection - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-closing fireproof louver attached to a ventilation window of a fire door of a building or the like.

[0002]

2. Description of the Related Art Generally, a steel plate fire door is provided with a louver or the like for the purpose of ventilation, but this louver serves as a guide hole for fire and hot air smoke when a fire occurs, so when a fire occurs, etc. In case of emergency, there is provided a self-closing fire prevention gallery which can be automatically closed especially for the purpose of fire prevention, and can only be opened again after resetting the automatic closing mechanism. (For example, Jikkou Sho 37-10036)

However, according to the above-mentioned structure, the device for controlling the movement of the door wing-like piece moving in the open position and the closed position connects the fusible link to the fusible link by connecting the cable to the wedge-shaped head. Since the head is always urged in the forward direction, when the fusible link is once melted and the automatic closing mechanism is activated, and then the reset operation is performed, the head is once lifted and the door wing-shaped piece is moved. Release the lever and pivot it outward, pull the head downward again,
While maintaining this state, the head and a new fusible link had to be connected, and this work was very complicated.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and to provide a self-closing fire prevention gallery having a simple structure, requiring no complicated operation, and having an easy reset operation. To aim.

[0005]

The essential parts of the structure of the present invention are: a plurality of shield plates pivotally supported in the vertical direction;
An oscillating rod that rotates together with the shielding plate and an interlocking rod that simultaneously pivots a plurality of oscillating rods in the same direction are symmetrically arranged in the front and rear with a predetermined space, and actuating rods that operate the interlocking rod. Is provided between the front and rear interlocking rods, and a lower end portion of the operating rod is provided with an operating protrusion having front and rear inclined surfaces whose front and rear ends incline downward, and an upper end portion is provided with the stopper. It is also possible to provide an engaging projection with which the rod engages, and to bring a portion of the front and rear interlocking rods, which is the lowermost end of the front and rear interlocking rods, that protrudes outwardly into contact with the front and rear inclined rods.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 6 shows the whole of a self-closing fireproof gallery 1 of the present invention, which is attached to a ventilation window 100 formed in a lower portion of a fire door 10. Reference numeral 101
Indicates a glass window. Fire protection gallery 1 has ventilation windows 10
A horizontally long rectangular louver frame 2 provided in 0 and a plurality of shield plates 3 rotatably mounted between the left and right side frames 21, 21 of the louver frame 2 at equal intervals in the vertical direction.
..And swinging rods 4 for rotating the shielding plates 3 ...
... and the interlocking rod 5 for simultaneously rotating the swinging rods 4 ... In the same direction, having a predetermined space 50,
They are arranged symmetrically.

An operating rod 6 is arranged vertically between the front and rear interlocking rods 5, 5 on the outer side of one of the left and right side frames 21, 21, and the upper end of the operating rod 6 is located at the upper end of the operating rod 6. , The stopper rod 7 is engaged.

The louver frame 2 is a laterally elongated frame from left and right side frames 21 and 21 having an outward substantially U-shape, and upper and lower frames 22 and 22 having a substantially downward U-shape connected to the upper and lower ends of the left and right side frames 21 and 21. It is formed in a shape and is fitted in the ventilation window 100 while holding the shielding plate 3 ..., the swing rod 4 ..., And the like, and is attached to the fire door 10 by the front and rear frames 8, 8. To be

The front and rear frames 8 and 8 are formed in the same shape in the shape of a horizontally long rectangular frame facing each other. The outer dimensions of the front and rear frames 8 are larger than that of the ventilation window 100. The end faces of the frames 22 and 22 are hidden.

The inner surfaces of the upper and lower frames 22, 22 are
Vertical shield plates 310, 310, 320, 320 protruding in the vertical direction are attached to the front and rear with a predetermined space. The lower portion of the upper shield plate 310 is inclined inward, and the end of the upper shield plate 310 is bent inward by approximately 90 degrees.
11 is formed. An upper portion of the lower shield plate 320 is inclined outward, and an outer protruding edge 321 bent outward in an L-shape is formed at an end thereof.

The shield plate 3 has a closed posture of approximately 65.
The base plate 31 is inclined at an angle, the upper end of the base plate 31 protrudes upward, and the upper end protruding edge 32 of the same shape as the outer protruding edge 321 of the lower shielding plate 320 formed at the end, and the lower end part of the substrate 31 are It is formed by a lower end protruding edge 33 having the same shape as the inner protruding edge 311 of the upper shield plate 310 protruding downward and formed at the end thereof.

The rotary shafts 34, 34 attached to the left and right ends of the substrate 31 are rotatably held by the left and right side frames 21, 21, so that the shield plates 3 ... It has a predetermined space 50 and is symmetrically arranged so as to be rotatable in an open posture and a closed posture at equal intervals in the vertical direction.

That is, in the open position, the upper end projecting edge 32 of the uppermost shield plate 3 is located inside the inner projecting edge 311 of the upper shield plate 310 with a predetermined interval, and the uppermost shield plate 3 of the lowermost shield plate 3 is located. The lower end protruding edge 32 is located outside the outer protruding edge 321 of the lower shield plate 320 with a predetermined interval, and the upper end protruding edges 32 ... Of the other shield plates 3 ... The plates 3 are located inside the lower end projecting edges 33 ... With a predetermined interval.

The upper edge 32 of the uppermost shielding plate 3 in the closed posture is the inner edge 31 of the upper shielding plate 310.
1, the lower end projecting edge 32 of the lowermost shield plate 3 abuts the outer surface of the outer projecting edge 321 of the lower shield plate 320, and the upper projecting edges 32 of the other shield plates 3 ...
.. is the lower edge 33 of the upper shield plate 3 ...
・ Abut on the inner surface of. Reference numeral 30 denotes a reinforcing round bar provided between the upper and lower frames 22, 22 in the longitudinal center portion between the front and rear shield plates 3, 3.

The oscillating rod 4 is inclined downward to the outside at the end of the rotary shaft 34 ... Of each of the shield plates 3 ... It is installed in a protruding state.

The interlocking rods 5 are pivotally attached to the respective end portions of the swing rods 4 and are arranged at a predetermined distance in the front and rear, and rotate the shielding plates 3 ... Simultaneously.

The operating rod 6 has an operating protrusion 61 at its lower end.
An engaging projection 62 is formed on the upper end portion.

That is, the actuating projection 61 has front and rear inclined surfaces 63 and 63 at the front and rear end portions which incline downward and outward. The front and rear inclined surfaces 63 and 63 have the swing rod 4 of the shield plate 3 at the lowermost stage. The part of the rotary connecting shaft 51 that pivotally connects the interlocking rod 5 is projected to the outside of the interlocking rod 5. The urging body 9 that is always urged in the opening direction is attached to the rotation connecting shaft 51.

One end of the urging body 9 which is always urged in the opening direction abuts on the lower center portion of one side frame 21 in the front-rear direction from the lower side to the urging body upper fixed shaft 91 which is projected outward. , The other end is below the urging body upper fixed shaft 91, and is brought into contact with the lower side of the rotation connecting shaft 51 from above the urging body lower fixed shaft 92 which is projected outward, so that the interlocking rod 5 is always operated. Is urged to move from below to the center in the front-rear direction.
Is in contact with the inclined surfaces 63, 63, the shield plate 3 does not rotate to the closed position as long as the operating rod 6 is fixed.

The engaging projection 62 is screwed and connected to a vertically elongated hole 65 formed at the upper end of a connecting rod 64 which is integrally located above the operating projection 61 and is located above. That is, the engaging projection 62 is fitted onto the upper ends of the upper and lower swing rods 4 and 4 in the closed state of the shield plate 3.
And is formed above the fitting portion 66 by an engaging portion 68 having a stopper hole 67.

The stopper rod 7 is held inside the upper frame 22 by a holding member 71 so as to be slidable in the left-right direction, and the end on the side of the operating rod 6 penetrates the side frame 21 and the stopper hole 6 is formed.
It fits in 7.

The other end side is projected upward to form a plate connecting portion 72. Reference numeral 70 is a stopper rod 7.
Is a spring for constantly urging the stopper rod 67 in a direction to deviate from the stopper hole 67, and a reference numeral 73 is a fuse for connecting the holding member 71 and the stopper rod 7 to maintain the fitting posture of the stopper rod 7 into the stopper hole 67. The plate is shown.

Since the present invention is constructed as described above,
When the temperature rises due to the occurrence of fire, the fuse provided in the fuse plate 73 melts, releasing the connection between the stopper rod 7 and the holding member 71, and at the same time, the stopper rod 7 causes the stopper rod 7 to move to the operating rod 6 by the spring 70. Depart from the stopper hole 67.

Then, the front and rear inclined surfaces 63, 63 of the operating rod 6
The rotation connecting shafts 51, 51 of the interlocking rod 5 come into contact with the urging body 9 and
Since the rotation connecting shafts 51, 51 are urged to move inward, the operating rod 6 moves downward and the interlocking rod 5 moves.
Therefore, the rocking rods 4 ...
Rotates downward and each shield plate 3 ... Is in the closed posture. (See Fig. 5)

At this time, the fitting portion 66 formed at the upper end of the operating rod 6 is fitted onto the upper and lower swing rods 4 and 4 to shield even if the urging body 9 is abnormal due to heat. The closed state of the plate 3 is maintained. Next, when resetting, the front and rear frames 8,
After removing 8, lift the operating rod 6 with the tip of a screwdriver or the like. Then, the front and rear inclined surfaces 63, 63 move the rotation connecting shafts 51, 51 to the outside, and at the same time, the interlocking rods 5, 5 also move to the outside, and rotate the shielding plates 3 ... Then, the stopper rod 7 is engaged with the engaging projection 62 of the operating rod 6 to maintain the operating rod 6 raised position, and the stopper rod 7 is connected to a new fuse plate 73 to connect the shielding plates 3 ... Maintain an open position.

[0026]

As described above, according to the present invention, a plurality of shield plates pivotally supported in the vertical direction, a swing rod that rotates together with the shield plates, and a plurality of swing rods in the same direction at the same time. Since the interlocking rods that rotate are arranged symmetrically in the front and rear with a predetermined space, even if a fire occurs on one side and the flame directly hits the shield plate and the shield plate undergoes thermal deformation, Since they are arranged symmetrically in the front-rear direction with a predetermined space, this deformation does not affect the other side at all, and the function of the fire prevention jar can be sufficiently exerted. Further, since the members are arranged symmetrically in the front-rear direction, the same member may be used in the right and left opposite directions, and member management is easy. In addition, since the shield plate has a predetermined space and is symmetrical about the front and rear, the front and rear interlocking rods also have a predetermined space, and the operating rod can be arranged between them, so the front and rear interlocking rods have a simple structure. The rod can be operated easily and simultaneously.
Further, when performing a reset operation, since the front and rear inclined surfaces are provided on the operating projections of the operating rod and the rotary connecting shaft of the interlocking rod is brought into contact with the front and rear inclined surfaces, the operating rod is lifted and the stopper rod is lifted. By engaging with, the open position of the shield plate can be maintained, and after that, only a new fuse plate is connected to the stopper rod, so that the reset operation is easy.

[0027]

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of the main part of the present invention.

FIG. 2 is a partially cutaway front view of the rear frame with a rear frame removed.

FIG. 3 is a cross-sectional view of the main part of the present invention.

FIG. 4 is a vertical cross-sectional view of a portion of the shield plate in the opened posture of the shield plate.

FIG. 5 is a vertical cross-sectional view of the shielding plate portion in a closed posture of the shielding plate.

FIG. 6 is a front view of a fire door equipped with the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire proof 10 Fire proof door 100 Ventilation window 2 Rattle frame 21 Side frame 3 Shielding plate 34 Rotating shaft 4 Swinging rod 5 Interlocking rod 51 Rotating connecting shaft 6 Actuating rod 61 Operating protrusion 62 Engaging protrusion 63 Front and rear Inclined surface 7 Stopper rod 70 Spring 73 Fuse plate 9 Energizer

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of right and left side frames of a louver frame body provided in a ventilation window, each having a rotation shaft , having a predetermined space in the front-rear direction and pivotally supported at equal intervals in the up-down direction. A shield plate, a plurality of swing rods integrally attached to the rotary shaft, and before and after the swing rods are simultaneously rotated in the same direction.
An interlocking rod having a predetermined space, an urging member for urging the shield plate in a direction to always close it, a position for preventing the swing rod from rotating so as to maintain the shield plate in an open posture, and a swing rod. It can be moved to a rotating position and is installed between the interlocking rods.
An actuating rod which, a stopper rod which allowed to maintain at all times operating rod acting on the operating rod in a position to prevent rotation of the rocking lever, biased in a direction to disengage the engagement state between the always operating rod stopper rod a spring that becomes a fuse plate to keep the engagement posture of the actuating rod of the stopper rod, the actuating rod under
The front and rear slanted surfaces are formed at the ends so that the front and rear
It has a projection for operation, and the stopper is attached to the upper end.
The rod has an engaging projection with which the rod engages, and
The part of the rear interlocking rod that protrudes outward from the pivotal connecting shaft comes into contact.
Self-閉防fire louver which is characterized in that is.