JPS58793Y2 - Shutter locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter locking device, and more particularly to a device for pulling down and locking a roll-up screen door shutter.

As shown in Figs. 1 and 2, the roll-up type screen door shutter has a spring-loaded drum 1 housed in a case 2 and installed in a lintel of a passageway or window, and a screen shutter 3 is attached to this drum 1. The shutter 3 is wound around it, one end of the shutter 3 is lowered along the rails 4 on both sides, and the shutter 3 is locked by going around an appropriate locking means.

The present invention provides a locking device that is structurally simple and easy to operate as this locking means.

The configuration of the locking device according to the present invention is as described in the claims for utility model registration, and specific examples will be described below based on the drawings.

This locking device consists of a main body 5 attached to the lower end of the shutter 3, and a fixed plate 6 that engages with the main body 5.

The base 5a of the main body 5 is fixed laterally on the pull plate 8 at the lower end of the shutter 3 by means of screws 7,7'.

The pull plate is, for example, a shutter screen sandwiched between two L-shaped members 8 and 8', and the shutter 3 can be raised and lowered by placing the hand on the bottom 8a58'a of the L-shaped member. It is something.

The main body 5 has a protruding part 5c which is stepped from the base part 5a with a bent part 5b, and a shaft 5d is provided at the tip thereof perpendicularly to the surface, and the receiver is provided with a slider that engages with the plate 6, e.g. A small roller 5e is bearing.

The slide may be a smooth protrusion without a rotation axis.

On the other hand, the receiver plate 6 is fixed to the rails 4°4 on both sides of the shutter 3.

The rail is, for example, a guide frame with an F-shaped cross section by overlapping two rectangular shaped plates 4a and 4b, and the plate 6 is placed on the joint 4c of the overlapping rails. Board 6
The left and right supports are installed so that the zero surface is perpendicular to the surface of the shutter 3, and the plates 6 on the left and right sides are symmetrical with each other facing inward.

The support plate 6 is installed by fixing its base 6a to the rail 4 with screws 9, 9'.

The plate 6 extends downward from the base 6a, that is, the shutter 3
A guide portion 6b extending diagonally inward in the closing direction of the guide portion 6b, and a stepped locking portion 6 bent and depressed from the tip of the guide portion 6b.
It has c.

Since the receiver plate 6 is entirely made of a resilient metal plate, the guide portion 6b can change its position in a direction transverse to the opening/closing direction of the shutter 3 while having a restoring force.

The main body 5 and the support plate 6 are positioned so that the roller 5e rides on the guide portion 6b of the support plate, and when the shutter 3 is pulled down, the roller 5e moves as shown by the imaginary line in FIG. While pressing the elastic guide part 6b, it is simultaneously guided by the elastic guide part 6b and engaged with the locking part 6c.

Also, when pulling up the locked shutter 3 with a little force, the roller 5e is not guided by the surface of the locking part 6c.
presses the locking portion 6c laterally, escapes from the locking portion 6c, and is pulled upward along the guide portion 6b.

In this case, the step-shaped guide surface of the locking part 6c stands in the way of the return path of the roller 5e, so a larger force is required to disengage from the locking part 6c than when engaging the roller 5e. Therefore, there is no possibility that the locking device will be accidentally disengaged due to the winding force of the drum 1.

The locking device described above is easy and reliable to operate, and is also structurally simple and less prone to failure.

Therefore, it is highly practical as a locking device for lightweight shutters attached to passages, windows, etc.

[Brief explanation of drawings]

FIG. 1 is a front view showing the locking device of the present invention in use, and FIG. 2 is a longitudinal cross-sectional view taken along the line A--A. FIG. 3 is an enlarged front view of the main part showing the locking state of the locking device of the present invention, and FIG. 4 is a cross-sectional view taken along the line B--B. 5 and 6 are perspective views of the components of the locking device of the present invention. 3...Shutter, 5...Main body, 5a...Base,
5b...Bending part, 5c...Protrusion part, 5d...Axle,
5e...Roller, 6...Base is plate, 6a...Base,
6b...Guiding part, 6c...Locking part.

Claims (1)

[Scope of utility model registration request] The main body attached to one end of the shutter and the fixed receiver that engages with the main body are composed of a plate, and the plate includes a fixed base, a guide portion extending diagonally inward from the base in the closing direction of the shutter, and It consists of a step-shaped locking part that bends and falls from the tip of the guide part, and the guide part has elasticity in the lateral direction with respect to the opening and closing direction of the shutter. A locking device for a shutter, in which an engaging slide is provided, and the slide presses an elastic guide portion and is simultaneously guided by the guide portion and releasably locks to a locking portion beyond the guiding portion.