JP2549279Y2 - Grill shutter push-up prevention device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing a grill shutter from being pushed up, which is constituted by lattice slats so that the inside can be seen.

[0002]

2. Description of the Related Art As shown in FIG. 4, a grill shutter to which the present invention is applied has a plurality of connecting pipes in which a plurality of core pipes 1 laid in parallel are arranged in parallel in a direction perpendicular to the core pipes. 2 to form a lattice-shaped slat, and the connecting portion of the core pipe 1 and the connecting link 2 slides in the guide groove of the guide rail 3 erected on both sides of the mounting portion of the building. To open and close the shutter. When opening and closing,
The take-up drum 5 is rotated forward or backward with respect to the lattice slats suspended above.

[0003] Since the grille shutter of such a lattice-shaped slat is generally small and lightweight, there is a possibility that the grille shutter will be lifted up by an external hand and opened. Therefore, a locking device for preventing the shutter from being opened is required for security. Shutters equipped with this kind of locking device are disclosed in Japanese Utility Model Publication No. 61-7334 and Japanese Utility Model Publication No. 2-146.
No. 10 has been proposed. In the former, a lock is attached between two adjacent core pipes at the left and right ends at an intermediate height position of the shutter, and this is locked to fix the lattice-shaped slat to the guide rail.

[0004] The latter is located at the lower sides of the shutter,
A latch bar protruding into the guide rail, a forked member engaged with the latch bar by elevating and lowering movement of the shutter, and a ratchet for restricting the rotational movement of the forked member. When the abutment comes into contact with the forked member and falls into the recessed portion of the forked member while rotating the forked member, the forked member is locked by the ratchet to block the upward and backward movement of the latch bar, and to release the shutter opening / closing device. In conjunction with this, the blocking piece that electromagnetically prevents the rotation of the ratchet wheel is separated from the ratchet wheel to release the lock of the forked member.

[0005]

The above-mentioned conventional devices have the following disadvantages. That is, the former is locked,
The disadvantage is that the unlocking requires manpower, and the latter requires the electromagnetic opening and closing control device for the locking device in addition to the driving device for the winding drum.

[0006]

SUMMARY OF THE INVENTION In order to solve the conventional drawbacks, the present invention does not use a special device, and when the lattice-shaped slat is forcibly pushed up from below, the distance between the upper and lower core pipes is relatively small. The slider mounted between the two core pipes moves to move the slider at the tip into the lock hole provided at the bottom of the guide rail, thereby preventing the shutter from being opened. Things.

[0007] That is, a grill shutter in which a plurality of core pipes arranged in parallel to each other are flexibly connected by a plurality of rows of connection links arranged in parallel in a direction perpendicular to the core pipes to form a lattice slat. In the above, the end of the core pipe is located between the upper and lower core pipes near the upper end of the rail that slides in the vertical direction, and when the shutter is closed, the end of the core pipe is inserted into a lock hole provided in the bottom of the rail. A locking portion for preventing the grill shutter from being lifted, and a slider for retracting the lock portion outside the lock hole when the shutter is wound up is provided so as to be able to advance and retreat in parallel with the core pipe, and further above the slider. After attaching the squirrel-shaped rotary lever, support the slider so that the drive pin provided on the abdomen of the slider engages with a floating groove formed in the lower part of the lever. It proposes a push-up prevention device of the grille shutter.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a main part of the device of the present invention, FIG. 2 is a horizontal sectional view, FIG. 3 is a side view, and FIG. 4 is a front view conceptually showing a shutter closed state. In the guide rails 3 erected on both sides of the mounting portion of the grill shutter in the opening of the building, the connecting portion between the core pipe 1 and the connecting link 2 forming the lattice-like slat slides up and down. The push-up preventing device of the present invention is attached to a position near the upper end of the rail 3, that is, at the left or right end of the slat near the lintel as shown in FIG. The push-up preventing device is disposed so as to be fitted between the upper and lower two core pipes 1a and 1b as shown in FIG.

The details of this apparatus will be described below with reference to FIGS. Reference numeral 10 denotes a case of the present apparatus. In this case, two upper and lower core pipes 1a which are adjacent to each other,
1b is attached so as to be wound around with a band-like member, and one end of the case left and right
The other side is held by the holding link 6 on the left and right.
In the combination of the links 2 and 6 and the core pipe 1a, an elongated adjustment hole 7 is provided on the link side so that the distance between the pipes can be slightly reduced.

Reference numeral 11 denotes a slider provided in the case 10. The slider is arranged between the upper and lower two core pipes 1a and 1b so as to be able to advance and retreat in parallel with the core pipe. Reference numeral 12 denotes a slot-shaped sliding groove formed at the rear of the slider, and reference numeral 13 denotes a slider support pin screwed from the front surface of the case 10 so as to penetrate the sliding groove. Reference numeral 14 denotes a lock portion formed at the tip of the slider 11. This is so that when the shutter is closed, it enters into the lock hole 7 provided at the bottom of the rail 3 to prevent the grill shutter from rising, and retreats out of the lock hole 7 when the shutter is rolled up or lowered. It is configured.

Above the slider 11, a dogleg-shaped rotary lever 15 is rotatably mounted via a rotary shaft 16 provided on the case 10. When the distance between the upper and lower core pipes 1a and 1b is relatively reduced,
An upper end of the lever is provided at a position where the upper end is in contact with the upper core pipe 1a and is pressed down, and a driving pin 19 provided on an abdomen of the slider 11 is formed in a floating groove 18 formed in a lower portion of the lever.
Are adapted to engage.

FIG. 1 shows the operation of the slider 11 and the U-shaped rotary lever 15. When the distance between the two upper and lower core pipes 1a and 1b is relatively reduced, the upper end portion 17 of the dogleg-shaped rotating lever is pressed down against the upper core pipe 1a, and thereby the slider 11 Is moved, and the lock portion 14 is moved to the floating groove 18 and the drive pin 19.
Through the lock hole 7 provided at the bottom of the rail 3.

When the lattice-shaped slat descends, the slat is suspended from above, so that the upper pipe 1a of the two upper and lower core pipes temporarily touches the upper end 17 of the U-shaped rotary lever. Therefore, even if the lock portion of the slider 11 attempts to project into the lock hole 7 provided at the bottom of the rail, the distance between the core pipes 1a and 1b is returned to the original position, and the lower portion of the lever is turned in FIG. Since a clockwise force centering on the moving shaft 16 always acts, the lock portion of the slider 11 does not fall into the lock hole 7 provided at the bottom of the rail, so that there is no hindrance to the downward movement of the slat.

However, when the shutter is closed,
If the slat is forcibly pushed up from below, the upper part of the shutter is locked by a winding drum, a switch and the like, so that two upper and lower core pipes 1a, 1b near the upper end of the guide rail 3 as shown in the figure. The distance between them is relatively small,
The upper end 17 of the dogleg-shaped rotating lever 15 is pressed down in contact with the upper core pipe 1a, the slider is moved toward the rail, and the lock portion is connected to the rail via the floating groove and the driving pin. It sinks into the lock hole provided on the bottom. The stronger the pushing force from below, the more core pipe 1
a pushes down the actuation lever. Therefore, when the lock portion of the slider 11 is immersed in the lock hole, it is impossible to push up the grill shutter once closed from below and open it.

When the slats are raised by the winding drum 5, the connecting links 2a and 2b rise linearly with respect to each other, and the upper and lower two core pipes 1a, 1b
Even if the distance between them changes relatively, the distance between the core pipes 1a and 1b is returned to the original state, and a clockwise force around the rotation shaft 16 is applied to the lower part of the lever 15. Since it always operates, the lock portion of the slider 11 does not fall into the lock hole 7 provided at the bottom of the rail, and therefore there is no hindrance to the raising operation of the slat.

[0016]

As described above, according to the present invention, the end of the core pipe is located between the upper and lower core pipes near the upper end of the rail that slides in the vertical direction. It has a lock part that goes into the lock hole provided at the bottom to prevent the grill shutter from rising, and when the shutter is rolled up, the slider that the lock part retracts outside the lock hole can advance and retreat parallel to the core pipe. , And after attaching a U-shaped rotation lever above the slider,
Since the slider is supported so that a drive pin provided on the abdomen of the slider engages with a floating groove formed in a lower portion of the lever, the slider cannot be easily touched from the outside, and furthermore, it is mischievous. For example, it is possible to prevent the shutter from being lifted by hand intentionally, thereby achieving the purpose of theft prevention. In addition, the present device has a high practical effect because no special mechanism or control is required.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of the device of the present invention.

FIG. 2 is a horizontal sectional view of FIG.

FIG. 3 is a side view of the same.

FIG. 4 is a front view conceptually showing a shutter closed state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 core pipe 1a core pipe 1b core pipe 2 connection link 2a connection link 2b connection link 3 guide rail 5 winding drum 7 lock hole 10 case 11 slider 12 sliding groove 13 support pin 14 lock part 15 16 Rotating shaft 17 Upper end of lever 18 Floating groove 19 Drive pin

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of core pipes which are laid horizontally in parallel,
A grill shutter in which a grid-like slat is formed by being flexibly connected by a plurality of rows of connecting links arranged in parallel in a direction orthogonal to the upper end of a rail in which an end of the core pipe slides vertically. Near the section, between the two upper and lower core pipes, when the shutter is closed, it has a lock section that is immersed in the lock hole provided at the bottom of the rail to prevent the grill shutter from rising, and when the shutter is wound up A slider for retracting the lock portion is provided outside the lock hole so as to be able to advance and retreat in parallel with the core pipe, and further, a U-shaped rotary lever is attached above the slider, and a lower portion of the lever is provided. The slider is supported so that a drive pin provided on the abdomen of the slider is engaged with the floating groove formed in the slider, and a shutter is pushed up to reduce a distance between the upper and lower two core pipes. On the other hand, when the lever is contracted, the upper end of the dogleg-shaped rotating lever contacts the upper core pipe and is pushed down, and the slider moves through the floating groove and the drive pin, so that the lock portion is moved to the rail. A push-up prevention device for a grill shutter, which is immersed in a lock hole provided in a bottom portion.