JPS5828122Y2 - Steel shutter locking device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cannula-type locking device for a so-called steel storm door made of plastic or steel plate.

The general structure of the conventional steel shutter locking device described above is as follows:
A structural method is adopted in which the shutter is blocked by drilling a locking hole in the bottom of the rail, attaching a bolt to the end of the storm door that can move up and down, and dropping the bolt into the locking hole. Ta.

However, this conventional method is not very careful, as you can easily open the cannula by inserting a screwdriver under the rail, and has other drawbacks, such as dirt accumulating in the lock hole and clogging the hole. there were.

The present invention was made in order to eliminate the above-mentioned drawbacks, and the purpose of the present invention is to provide a locking device for a steel storm door that makes it difficult to remove iron from the outside and facilitates cleaning. It is in.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

In the locking device of the embodiment, as shown in FIGS. 1 to 5, 1 is a steel shutter made of a steel plate or a plastic plate, and is moved laterally inside a U-shaped rail described later along the rail. The shutter 1 is movable, and a lock 5 is attached to the lower sill 2 of the shutter 1, and a lock notch 6 is provided in the middle overhang piece 4a of the lower rail 4, which is fixed to the building 3 and has a substantially U-shaped cross section. .

Note that the outer side surface between the vertical force gussets has a large number of vertical slats 7.
The door board is formed by the combination of

Thus, the lower sash 2 has an upper half formed into a U shape by the bottom plate 2a and the edge plate 2b, and a vertical plate 2C that protrudes narrowly in parallel to the outside of the bottom surface of the bottom plate 2a. The vertical plate 2C is a longitudinal member in which a lower half consisting of a cross-sectional overhang piece 2d folded inward from the lower end of the inner vertical plate is molded as a single unit.
A door roller 8 is installed between them.

Next, the lower rail 4 includes a substrate 4b having a substantially U-shaped cross section, more specifically a cut-shaped cross section, a groove plate 4C having a U-shaped cross section floating outward and integrated with the substrate 4b, and a groove plate 4C connected to the horizontal portion of the substrate 4b. The overhang piece 4a having a cross-sectional shape is molded as a single piece to form a longitudinal member that is more powerful than a so-called molded material, and the above-mentioned notch 6 is formed in the overhang piece 4a.

Due to this structure, the shutter 1 is suspended by the interlocking of both overhanging pieces 2d and 4a, and both overhanging pieces 2d
, 4 The space surrounded by a is not visible from the outside.

By the way, in the thin box-shaped lock 5, the base plate 5a is attached to the bottom plate 2a with two screws 9, and on the vertical line in the center of the lock 5, there is a tongue-like piece extending through the box. The cannula 10 is inserted from above.

However, in the middle part of the cannula 10, there is a protrusion 1 for preventing the lever from coming off.
0a, upper corrugated portion 10b, and lower corrugated portion 10C
is shaped like a bottom, and its lower end 10d protrudes diagonally downward toward the building 3.
The width of the notch 6 is approximately equal to the width of the notch 6, and is a width that can be inserted into the notch 6.

In addition, spring plates 11.12 whose bases are fixed to the box body are in contact with the front and back sides of the cannula 10, and the tip of each spring 11.12 presses the cannula 10.
The elasticity of the spring 11 is much stronger, so that the lower end 10d of the cannula 10 is rotated in the direction approaching the building 3 side, and at the upper end (or lower end) of vertical movement, the spring plate 12 is clicked by pressing the waveform portion 10C (or the waveform portion 10b).

Next, the operation of the locking device according to the embodiment configured as described above will be described.

First, in the locked state shown in the figure, that is, in the state in which the cannula 10 is pushed down by hand and clicked to the lower end position, the lower end 10d abuts against the inner end of the notch 6 due to the bias of the spring plate 11. , the shutter 1 is locked to the rail 4 and cannot be moved.

Also, when you pull up Cannuki 10 by hand, you can see that Cannuki 10
is clicked at the upper end position with its lower end slightly protruding from the cannula bottom plate 2a.

In this state, since the canopy 10 is removed from the notch 6, the shutter 1 is released from the rail 4, and therefore the shutter 1 can easily move within the groove plate 4C via the door roller 8.

As described above, in the structure of the embodiment, the lower end portion 10d of the cannula is not visible from the outside, and a driver cannot be inserted from the outside, so there is no risk of intrusion of de-iron removal.

In addition, in the above structure, since the canopy 10 is bent outward, there is no need to make the shutter 1 particularly thick, and therefore a locking device can be easily attached to a thin shutter.Furthermore, the notch 6 is open. Therefore, the notch 6 is not clogged.

As described above, according to the locking device for a left-right sliding steel storm door according to the present invention, a notch of a constant width is provided in the middle projecting piece of the rail, and the end of the cannula that slides up and down is
Since it is configured to fit into the notch, the tip of the cannula does not protrude from the outer bottom of the rail, making it impossible to remove iron from the outside, thereby improving the usability and security of the locking device. In addition, there is no need to leave a space outside the rail attachment part for the canine to enter, making the rail installation easier, and cleaning is also easier because the notch will not be clogged with debris. It has the effect of becoming.

[Brief explanation of drawings]

Fig. 1 is a front view of a locking device for a steel storm door from the building side showing an embodiment of the present invention, and Fig. 2 is a view showing II-II of Fig. 1.
3 is a plan view of the same, FIG. 4 is a side sectional view of the lock of FIG. 2, and FIG. 5 is a rear view of the same. 1... shutter, 2... bottom sill, 2a.
...Same bottom plate, 3...Building, 4...
・Lower rail, 4a... Overhang piece, 5...
- Lock, 6...Notch, 10...Cannula, 10d...Lower end.

Claims (1)

[Scope of utility model registration request] The shutter is operable to move laterally within the roughly U-shaped rail along the rail, and can be slid up and down, with the tip protruding from the top or bottom surface of the shutter during the sliding operation. In a locking device for a steel storm door made of a plastic plate or a steel plate to which a tongue-like cannula is attached, the middle inwardly projecting piece of the substantially U-shaped inner wall of the rail has a tip portion of the cannula and 1. A locking device for a steel storm door, characterized in that a locking notch is formed which has approximately equal width and into which the tip of the cannula is engaged when the tip is slid.