JPS63594B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for replacing a multi-spring type shutter requiring a central post with a new shutter of a different type.

A multiple spring type (two-piece type) shutter that requires a center column 1 as shown in Fig. 1 can be replaced with a new type of shutter, such as a curtain 2 in a steel shutter installed at an opening in a building. , 2 or the middle pillar 1 is damaged due to corrosion, etc., and you want to replace it with a new shutter made of aluminum alloy that is less likely to corrode. Conventionally, the curtain winding mechanism 5 built into the curtain storage case 4 and the curtain winding mechanism 5 embedded in the opening side walls were installed. Since even the guide rails 7 and 7 had to be replaced, a great deal of man-hours and costs were required for replacement. Generally, shutters are installed at the front of stores, warehouses, and garage entrances, so if it takes several days to replace the shutters, it will hinder business operations, so there is a lot of demand for replacing them with new shutters like the ones mentioned above. , leave it unreplaced, or
The reality is that the shutters are partially replaced with the same type of shutter. In the illustrated example, 8 is a shaft, and 9 is a coil spring.

In view of the above, an object of the present invention is to provide a method that allows a multiple spring type shutter that requires a center column to be replaced with a new shutter of a different type in a short period of time and at low cost.

The shutter replacement method of this invention is used when replacing a multiple spring type shutter that requires a center column with a new shutter of a different type.
Keeping the curtain winding mechanism and guide rail as is, replace the old curtain with the new curtain in the part that can be pulled out as much as possible from the curtain storage case, and install the new center pillar holding bracket directly below the old center pillar holding bracket to remove the old curtain. The above purpose is achieved by replacing the middle pillar with a new middle pillar.

Hereinafter, one embodiment of the present invention will be described based on illustrated examples.

When replacing a multi-spring type shutter that requires a central pillar 1 as shown in Fig. 1 with a new shutter, it is necessary to replace the old one made of steel plate in the part l that can be pulled out to the maximum extent from the curtain storage case 4 as shown in Fig. 2. Replace the curtain 2 with a new curtain 2A made of aluminum alloy. At this time, new curtain 2A
Various conventional means can be applied to the connection structure between the slats 11 of the old curtain 2 and the old curtain 2. For example, as shown in FIG. The portion 12a is inserted, and the roller-shaped stopper 13 is screwed onto the shaft portion 12a from both ends.

In addition, as shown in FIGS. 4 and 5, a new center column holding fitting 14A is provided which includes a middle column holding part 15 and an attachment flange part 16 into which the upper end of the new center column can be inserted directly below the old center column holding fitting 14. Fasten with screws. Usually middle pillar 1,
1A is made of steel plate and aluminum alloy, and since the thicknesses thereof are different, it is necessary to install a new center column holding fitting 14A that acts as an adapter. Note that normally, the middle pillars 1, 1A and the guide rails 7, 7 can be used in common even if the model changes.

As described above, in the shutter replacement method of the present invention, when replacing a multiple spring type shutter that requires a center column with a new shutter of a different type, the curtain winding mechanism and guide rail are left as they are, and the curtain and center column are replaced. Since only the pillars are replaced, the new shutter can be replaced in a short period of time and at low cost. Therefore, it is possible to easily replace the shutter made of steel plate with one made of aluminum alloy, which is less likely to corrode, and the life of the shutter after replacement can be greatly extended.

[Brief explanation of the drawing]

The following diagrams illustrate this invention: Figure 1 is a front view of a multiple spring type (two-piece type) shutter, Figure 2 is a schematic diagram showing the replacement part of the curtain, and Figure 3 is a diagram showing the new curtain and the old curtain. FIG. 4 is an exploded perspective view showing the connection structure of FIG. 4. FIG. 4 is a side partial sectional view showing the state in which the new center column holding fitting is attached. FIG. 5 is a view taken along the line V--V in FIG. 4. 1, 1A... Middle pillar, 2, 2A... Curtain, 4... Curtain storage case, 5... Curtain winding mechanism,
7... Guide rail, 14, 14A... Middle pillar holding metal fitting.

Claims (1)

[Scope of Claims] 1. When replacing a multiple spring type shutter that requires a central pillar with a new shutter of a different model, the curtain winding mechanism and guide rail are left as they are, and the part that can be pulled out as much as possible from the curtain storage case is A shutter replacement method characterized by replacing an old curtain with a new curtain, and replacing the old center pillar with the new center pillar by attaching a new center pillar holding fitting directly below the old center pillar holding fitting.