JPH074784U - Electric shutter with push-up prevention mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] A shutter with a push-up prevention mechanism that can not be touched easily from the outside and that can easily prevent intentional lifting of the shutter by hand such as mischief and achieve the purpose of theft prevention. To suggest. [Structure] A push-up prevention metal fitting 10 curved to have a constant curvature so as to be fitted to the peripheral surface of the winding shaft 1 so as to overlap with the surface side of several upper slats connected to the fishing side of the winding shaft 1. Alternatively, the push-up prevention slat 10b is fixed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric shutter having a push-up prevention mechanism.

[0002]

[Prior art]

 Small and lightweight shutters (including narrow shutters and grill shutters) installed in homes, etc. may be opened by forcing them from the outside. Therefore, there is a need for a locking device that prevents the shutter from being opened and closed for crime prevention. As a shutter provided with this type of locking device, Japanese Utility Model Publication No. 61-7334 and Japanese Utility Model Publication No. 2--14610 have been proposed.

The former is one in which a lock is attached between two core pipes adjacent to each other at both the left and right ends of the intermediate height position of the shutter, and the lock is locked to fix the lattice slat to the guide rail. is there. The latter is a latch bar that extends into the guide rails on both sides of the lower part of the shutter, a bifurcated member that engages with the latch bar when the shutter moves up and down, and a ratchet wheel that restricts the rotational movement of the bifurcated member. If the latch bar comes into contact with the bifurcated member when the shutter descends and falls into the recessed portion of the bifurcated member while rotating the bifurcated member, the bifurcated member is locked by the ratchet wheel and the latch bar is moved. -The rising and retreating path of-is blocked, and the blocking piece that electromagnetically blocks the rotation of the ratchet wheel is separated from the ratchet wheel in conjunction with the release operation of the shutter opening and closing mechanism to unlock the bifurcated member. It is a thing.

[0004]

[Problems to be solved by the device]

 Each of the above conventional devices has the following drawbacks. That is, the former has a drawback that it requires manpower for locking and unlocking, and the latter has a drawback that an electromagnetic opening / closing device for the locking device is required in addition to the drive device for the winding drum, and the manufacturing cost is high. The present invention has been devised to solve the drawbacks of the prior art, and a push-up prevention metal fitting or a push-up prevention slat is provided between the upper part of the slat and the winding shaft, without the need for an electromagnetic opening / closing device for the locking device. The purpose of the present invention is to provide a device in which, when the slat is forcibly pushed up from the bottom when the shutter is closed, the push-up prevention metal fitting or the push-up prevention slat hits the shutter case or the front structure of the case, and the shutter is automatically prevented from being released. To do.

[0005]

[Means for Solving the Problems]

 The present invention provides a push-up prevention member or a push-up prevention member that is curved to have a curvature that can be fitted to the circumferential surface of the shutter take-up shaft between the take-up shaft of the shutter and the upper slat connected to the take-up shaft. When the anti-slat is attached and the shutter is closed, when the slat is pushed up, the anti-push metal or the anti-elevation slat moves around its fishing point as the center of rotation and ascends, and is on the locus of its movement. We propose a shutter with a push-up prevention mechanism, which is characterized in that the shutter case or front structure is automatically prevented from being released.

The push-up preventing metal member may be fixed so as to overlap with the front surface side of several upper slats connected to the fishing source side of the winding shaft.

The push-up prevention fitting is made of any one of a plate, a rod, a pipe, and a net.

[0008]

【Example】

 The configuration of the present invention will be described according to an embodiment. 1 and 2 are views showing an embodiment of the device of the present invention. FIG. 1 is a side view of a main part showing a closed state of a shutter in which a slat is unwound, and FIG. It is a principal part side view which showed the state. FIG. 3 is a front view conceptually showing the shutter closed state.

In the drawings, reference numeral 1 is a winding shaft of a shutter horizontally installed in a shutter case 4 installed in a ceiling portion of a building, 2 is an electric opening / closing machine for driving the winding shaft, and 3 is the shaft 1 The roller chain that connects the switch 2 to the switchgear 2 is shown. Reference numeral 6 is an outer lintel which is a swallowing mouth of the slat 5, 7 is an inner lintel, and 8 is a guide rail. The shutter slats 5 are interlocked with each other, and are raised or lowered along guide rails 8 standing upright on both sides of the building opening to open and close the building opening.

By the way, the push-up prevention mechanism of the present invention is arranged between the winding shaft 1 of the shutter and the upper slat 5a connected to the winding shaft via the fixing plate 9. That is, when the shutter is rolled up, a push-up prevention metal fitting 10 or a push-up prevention slat 10b, which will be described later, which is curved so as to have a curvature adapted to the peripheral surface of the winding shaft 1 is prepared, and this is fixed to the shaft fixing plate 9 and It is attached between the upper slats 5a.

In the embodiment shown in FIGS. 1 and 3, a plurality of upper slats (three slats in the example of FIG. 1) connected to the fishing side are curved to have a constant curvature so as to be superposed on the surface side. The push-up prevention metal fitting 10 is fixed by tacks or the like, and connects the above-mentioned several slats immovably. The distance H from the upper end of the lintel 7 to the center of the shaft 1 is designed so as to take more space in consideration of the maximum winding thickness of the slat winding. The distance H is about 125 mm. Therefore, the height of the push-up prevention metal fitting is also formed in a size corresponding to the height, and is usually about the length of three slats.

In the shutter of the present invention having the above-mentioned structure, the push-up preventing metal fitting 10 or the push-up preventing slat 10b is preliminarily curved so as to have a curvature adapted to the peripheral surface of the winding shaft 1, and these are fixed. Since it is mounted between the plate 9 and the upper slat 5a, when the slat of the shutter is wound up, it is smoothly wound around the peripheral surface of the winding shaft 1 as shown in FIG. There is no hindrance. Further, when the slat descends, the slat is in a state of being suspended upward, and since the push-up preventing metal fitting or the push-up preventing slat 10 is attached between the shaft fixing plate 9 and the upper slat 5a, the guide rail 8 is It does not fall down, so it does not hinder the lowering movement of the slats.

However, if the slats are forcibly pushed up from the bottom when the shutter is closed, the upper part of the shutter is locked by the take-up shaft 1, the opening / closing device 2, etc., so that the push-up prevention metal fitting 10 or the push-up prevention device is pushed. The slat 10b moves around the fishing base 9a as a center of rotation and ascends, hits the shutter case 4 or the case front structure A on the locus of movement, and the shutter is automatically pushed up to prevent the release. Yes (see FIG. 4).

FIGS. 5 and 6 show another embodiment of the present invention. FIG. 5 is a side view of an essential part showing a closed state of a grill shutter slat, and FIG. 6 is the same as above. FIG. 4 is a side view of the essential parts showing the state where the slat of the grill shutter has started to be partially wound. As shown in the figure, a plurality of core pipes 11 laid in parallel are flexibly connected by a plurality of rows of connection links 12 arranged in parallel in a direction orthogonal to the core pipes 11 to form a lattice slat, The shutter is opened / closed by sliding the guide rails 13 standing upright on both sides of the opening of the building through the joints of the core pipe 11 and the connecting link 12.

Also in the grill shutter of this embodiment, the push-up prevention fitting 20 is preliminarily curved so as to have a curvature that fits the peripheral surface of the winding shaft 1, and these are fixed to the fixing plate 16 and the upper slat 15a. It is installed between. Several upper slats (three slats in the example of FIG. 1) connected to the fishing side are fixed with push-up prevention metal fittings 20 which are curved to have a certain curvature so as to overlap with the surface side of the upper slats. Several slats are fixedly connected. If the slats are forcibly pushed up from the bottom when the shutter is closed, the upper portion of the shutter is locked by the take-up shaft 1, the opening / closing device 2, etc., so that the push-up prevention metal fitting 20 is attached to the fishing base 16a. It is the same as the embodiment of FIG. 1 in that the shutter is pushed up and released automatically by moving around the center of rotation and moving up and hitting the shutter case 4 or the case front structure A on its movement locus. .

In the embodiment shown in FIG. 7, between the winding shaft of the shutter and the upper slat connected to the winding shaft, instead of the push-up prevention metal fitting 10 or 20, the shutter winding shaft circumference is replaced. This is an example in which a push-up prevention slat that is curved to have a curvature that fits the surface is attached. The push-up preventing metal member may be formed of a plate, a rod, a pipe, or a net.

[0017]

[Effect of device]

 As described above, according to the present invention, since the push-up preventing metal fitting or the push-up preventing slat is arranged between the upper portion of the slat and the winding shaft, if the slat is forcibly pushed from below when the shutter is closed, this push-up is prevented. The metal stopper or anti-push slat hits the shutter case or the case front structure, and the shutter is automatically prevented from releasing. Therefore, this device cannot be easily touched from the outside, and it is possible to easily prevent intentional lifting of the shutter by hand such as mischief, thereby achieving the purpose of theft prevention. Moreover, since this device does not require any special electromagnetic mechanism or control, it is highly practical in that it can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a closed state of a shutter in which a slat is rolled down.

FIG. 2 is a side view of an essential part showing a state where a part of the slats has started to be wound.

FIG. 3 is a front view conceptually showing a shutter closed state.

FIG. 4 is an explanatory view conceptually showing the movement of the push-up preventing metal fitting when the slat is forcibly pushed up from below when the shutter is closed.

FIG. 5 is a side view of a main part showing another embodiment of the present invention, showing a closed state of a shutter in which a slat is rolled down.

FIG. 6 is a side view of a main part showing a state in which the slat is partially wound.

FIG. 7 shows another embodiment of the present invention, and is a side view of a main portion in which a push-up prevention slat is attached between a winding shaft of a shutter and an upper slat connected to the winding shaft.

[Explanation of symbols]

1 Winding shaft 2 Electric opening / closing machine 3 Roller chain 4 Shutter case 5 Slat 5a Upper slat 6 Outer lintel 7 Inner lintel 8 Guide rail 9 Fixing plate 10 and 10b Push up prevention metal fittings or push up prevention slat 11 Core pipe 12 Connection link 13 Guide rail 15a Upper slat 16 Fixing plate 20 Push-up prevention fitting

Claims (3)

[Scope of utility model registration request] 1. A winding shaft of a shutter and an upper slat connected to the winding shaft,
Attach a push-up prevention metal fitting or a push-up prevention slat that is curved to have a curvature that fits the shutter winding shaft peripheral surface. An electric shutter with a push-up prevention mechanism characterized in that the shutter is moved around the fishing base and rises and hits the shutter case or the front structure of the case on the locus of movement to automatically prevent the shutter from being released. . 2. A plurality of upper slats, which are connected to the fishing shaft side of the winding shaft, are overlapped with each other on the surface side thereof.
An electric shutter with a push-up prevention mechanism, characterized in that a push-up prevention metal fitting that is curved to have a fixed curvature is fixed to the peripheral surface of the winding shaft. 3. The electric shutter with a push-up prevention mechanism according to claim 1, wherein the push-up prevention fitting is any one of a plate, a rod, a pipe, and a net.