JPS605990A - Dual-axial type shutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter installed inside a building, and in particular, a shutter is installed in front of a shaft of the shutter parallel to the shaft at an appropriate interval. This invention relates to a two-shaft shutter that is provided with a bushing shaft that guides the shaft.

As is well known, a shirt starter installed inside a building such as a building has a winding shaft housed in a case, an electric opening/closing machine, etc. installed above the ceiling, and the winding shaft is operated by the motor of the opening/closing machine. When the shutter is rolled up and closed, the shutter is automatically lowered while the speed is adjusted by a governor inside the opening/closing machine.

As shown in Fig. 2, there is a structure near the lintel 2 at the bottom of the case 1 to prevent the slats of the shutter from coming into contact with the lintel 2 when the shutter 3 is rolled up or lowered, and to prevent the shutter from sliding smoothly. A push wheel 4 is attached so as to be operated. As shown in Fig. 2, this pushcart 4 is made of angle material or channel material, and a material 5 is fixed to the lower part of the case 1, and the material 5 is fixed to the upper part of the receiving material 5 at a pitch of 1 to 2 m. It was usually installed.

However, with this configuration, the size of the shutter to fit inside the ceiling becomes large, and the ratio of the upper part of the ceiling 6 to the right becomes large, so there is not enough space in the ceiling to run ducts and other piping. There was a problem. In addition, in recent high-rise buildings, i, which keeps construction costs low,
-There is a tendency to reduce the floor height 11, but in that case, if the case for storing the fire shutters becomes bulky, it is impossible to use space effectively, which is extremely disadvantageous in terms of architectural design, and it is also unsightly. was there.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a two-shaft shutter which solves the above-mentioned problems. A pushing shaft is placed parallel to the shirt 1 to guide the shutter, and the installation height of this bushing shaft is set at the maximum winding diameter when the winding reshaft winds up the shutter. There is an attempt to provide a two-axis shutter whose upper and lower heights correspond to the upper and lower limit positions.

Another object of the present invention is to provide a two-axis shutter in which the bushing shaft is given a biasing force to rotate in the rewinding direction of the shutter.

Next, an example of the present defense will be explained in detail with reference to the drawings.
First, FIG. 3 shows a basic embodiment of the present invention,
Reference numeral 10 denotes a shutter case disposed in the ceiling, and a winding shaft 11 of the shutter is installed within the case. Reference numeral 12 denotes an electric opening/closing machine C, which opens and closes the winding shaft 11 when the shutter can be heard.
It is driven by a motor to wind up the shutter slats, and when closing the shutter,
It is designed to descend under its own weight. A bushing shaft 13 is installed parallel to the winding shaft 11 at an appropriate interval in front of the winding shaft 11, and the slats 14 of the shutter are guided by this bushing shaft 13 to wind up and unwind. Configure it so that

The installation height C of the bushing shaft 13 from the floor surface is determined by the winding reshafts 1 to 11 as shown in FIG.
1L corresponding to the maximum winding diameter when winding the shutter
This is to ensure that the level falls within a range with the upper and lower limits being the upper and lower levels, respectively.

In this way, in mounting the bushing shaft parallel to the winding shaft, the present invention sets the height of the bushing shaft to the upper and lower levels corresponding to the maximum winding diameter of the winding shaft, respectively. The special feature is that it is kept within the range between the lower limit and J. Therefore, the two-axis shutter of the present invention has a low fit within the ceiling Jl. In other words, the positional relationship between the winding reshaft 11 and the bushing shaft 13 is in a special parallel relationship as described above, so even if the bushing shaft is installed, the space for housing the shutter case 10 will be small, so the upper part of the ceiling will be The proportion occupied by the shutter becomes smaller.

Therefore, when installing fire protection shutters in the fire protection compartment of a building with a low floor height, the shutters will not be raised too high, so the space can be used effectively, and the space for ducts and other piping can be saved. There are benefits.

The embodiment shown in FIGS. 5 and 6 corresponds to the second invention, and includes the pushing shaft 1? This invention differs from the first invention in that the foot is configured to apply a biasing force to rotate the shutter in the rewinding direction.

That is, the installation height of the bushing shaft 14 is the same as before in that it is set within a range whose upper and lower limits correspond to the maximum winding diameter of the winding shaft, respectively. , a balance spring built into the bushing shaft is required to apply a biasing force to rotate the bushing shaft in the unwinding direction. The specific structure of the bushing shaft 19 will be explained below with reference to the drawings. This bushing shaft 19 includes a cylindrical shaft body 15, a wheel 16 fixed to the shaft body 15, a core shaft 17 loosely inserted in the center of the shaft body 15, and the shaft. Main body 15 and core shaft 1
The balance spring 18 is interposed between the balance spring 7 and the balance spring 18.

The balance spring 18 has one end fixed to the core shaft 17 with a pin 21 and the other end fixed to the shaft body 15 with a set screw 22, for example, via a core 20.

The wheel 16 is fixed to the outer surface of the cylindrical shaft body 15 at appropriate intervals in the axial direction, and as shown in FIG. It has a mating convex portion 16a in the circumferential direction of the wheel.

In addition, near one of the bearings 23, an adjustment &! 24 is fixed to the core shaft 11, and a plurality of locking holes 27 are formed in the radial direction on the outer peripheral edge of the key 1 board for locking the two pieces 25 of the locking 11 fixed to the bearing 23 and the pin 26. ing.

In this invention, when the shutter is wound up, the bushing shaft body rotates via the wheel 16 that engages with the slat 14, winding up the balance spring 18 and causing the shutter to descend. directional explosive energy is given. When the shutter is lowered, the spring 18 applies downward energy to the slats of the shutter. That is, the bushing shaft 19 is given a driving force that causes the spring 18 to rotate in the downward direction of the re-shutter, but as the shutter descends, the elastic energy of the spring is released.

As is clear from the above description, in addition to the features of the first invention, the present invention is configured to apply a biasing force to rotate the bushing shaft 19 in the rewinding direction of the shutter. Even if the distance between the shafts and the bushing shaft is large, tension is applied to the slats between the shafts to prevent slack from occurring between the shafts.

Therefore, when applied to light permanent shutters, etc., the drop ■0
This provides an excellent effect in that the shutter can be lowered extremely easily even when the circle is small.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing a state in which a conventional shutter is housed in the ceiling, Fig. 2 is an enlarged cross-sectional view of the same lintel portion, and Figs. 3 and 4 show an embodiment of the present invention. Figure 3 is a sectional view showing how the shutter fits into the ceiling, Figure 4 is a perspective view of the same as above, Figure 5 is a cross-sectional view of the second invention, which does not show an embodiment of the shutter, and Figure 6 is the second invention. FIG. 2 is a partially cutaway front view of a bushing shaft used in the present invention. 10: Shutter case 11: Winding shaft 12 2 opening/closing FM 13.19: Bushing shaft 14 Nislat 15: Shaft body 16: Wheel 16a: Convex portion 17: Core shaft 18: Balance spring Suzuki Shutter Industry Co., Ltd. Agent Ashi ff1 Nao Mae Figure 1 Figure 3

Claims (1)

[Scope of Claims] 1. A winding shaft for the shutter is installed inside the building, and a bushing shaft is arranged in front of the winding shaft to guide the shutter in parallel with the shaft at an appropriate interval. The mounting height of this bushing shaft is characterized by being set within a range whose upper and lower limits are the upper and lower levels corresponding to the maximum winding diameter when the winding shaft winds up the shutter. Two-wheeled shutter. 2. A bushing shaft is installed inside the building, and the installation height of this bushing shaft is set at an upper level corresponding to the maximum winding diameter when the winding shaft winds up the shutter. The lower level is within the range of -L limit and lower limit,
A two-axis shutter characterized in that this bushing shaft is given a biasing force to rotate in the rewinding direction of the shutter. 3. The bushing shaft engages with the four rear surfaces of the shutter slats at appropriate intervals in the axial direction.
QSg'1 The biaxial shutter according to claim 2, which has a convex portion in the circumferential direction. 4. The biaxial shutter according to claim 2, wherein the bushing shirt 1~ is provided with a biasing force to rotate and cover the shutter in the rewinding direction by a balance spring built into the bushing shirt 71~.