JPH0718873Y2 - Crime prevention mechanism for pipe shutter with switch - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a crime prevention mechanism of a pipe shutter provided with an opening / closing device such as an electric motor. The present invention relates to a crime prevention mechanism that prevents a pipe curtain from being lifted when lifted.

[Conventional technology]

In a general electric pipe shutter, as shown in FIG. 5, a link material having upper and lower pipe insertion holes has a lower pipe insertion hole in a link material arranged above and a pipe insertion hole above a link material arranged in a lower position. An example of a link connected to the pipes is arranged, pipes are connected to the pipes in parallel in the vertical direction, the pipe curtain 1 is assembled, and both ends of the pipe are fitted into the guide rails 2 arranged on both sides of the front opening. The upper portion of the pipe curtain 1 is connected to the winding shaft 3 provided above the front opening.

This electric pipe shutter uses the power transmission of an electric opening / closing device 3a that rotates the winding shaft 3 in the forward and reverse directions, so that the pipe curtain 1 is rotated.
It is designed to be able to wind and rewind freely.

When the door is closed, the brake of the electric opening / closing device 3a acts and the winding shaft 3 does not rotate. Therefore, no crime prevention mechanism is provided.

Further, although not shown, there is a device in which a lock device is provided above the guide rail. The locking device receives a signal in conjunction with the closing of the pipe shutter, operates the solenoid to cause the locking body to project between the pipes, or engages the ratchet with the pipe to engage the locking device with the pipe shutter. There was something to prevent lifting.

[Problems to be solved by the device]

However, conventional electric pipe shutters, especially those with a narrow width of the front opening and light weight of the pipe curtain,
In the case where the lock device is not provided, the wind-up shaft 3 does not rotate, but when the pipe curtain 1 is lifted by forcible manpower, the pipe curtain 1 is lifted from the state of FIG. 5 as shown in FIGS. 6 and 7.

At this time, the pipe curtain 1 is regulated by the guide rails 2 and becomes zigzag, and is lifted in a bent state above the guide rails 2 to form a frontage to some extent with the floor portion to prevent crime. There was a problem above.

In addition, the structure including the lock device has a high cost correspondingly, and it requires time and effort for mounting and adjusting, which is economically disadvantageous in terms of mounting and construction.

The present invention has been made in view of the above problems, and an object thereof is to provide a crime prevention mechanism for a pipe shutter, which has a simple structure without using electrical means, and is equipped with an inexpensive and reliable switch. To do.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention interlocks a switch with a pipe curtain in which a row of links having upper and lower pipe insertion holes are sequentially connected and pipes are connected in parallel. In the pipe curtain, which is connected to the take-up shaft and guides the pipe curtain to the guide rails provided on both sides of the front opening so that the pipe curtain can be freely wound and unwound, a horizontal row of link materials at high places One of the pipe insertion holes is formed by an engaging link material formed in an elongated hole extending in the vertical direction, and the engaging link material at the end is lifted by a pipe curtain below the engaging link material to form the elongated hole. An opening / closing device is provided, which is provided with a locking member that abuts the inserted pipe and projects toward the inner wall of the guide rail, and an engaging portion that locks the locking member is provided on the inner wall of the guide rail. Pipe Sha It is obtained by configuring the security mechanism of the coater.

[Action]

According to this invention, when the pipe curtain is to be lifted, only the pipe curtain below the engaging link material provided at a high place beyond the reach of a person is lifted by the length of the long hole of the engaging link material, As it is lifted, the locking member provided on the engaging ring material at the end further abuts the pipe inserted into the long hole and projects toward the inner wall of the guide rail.
The engaging member is engaged with the engaging portion provided on the inner wall side of the guide rail to prevent the pipe curtain from being further lifted.

Therefore, the pipe curtain is prevented from being lifted up, which is effective for crime prevention, and it is possible to achieve a crime prevention mechanism having a simple structure.

〔Example〕

An embodiment of a crime prevention mechanism for a pipe shutter having an opening / closing device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view of a pipe curtain showing a part of the crime prevention mechanism with a part thereof omitted, FIG. 2 is a front view of the pipe curtain showing an operating state of the crime prevention mechanism with a part of the pipe curtain omitted, and FIG. It is a partially omitted plan view of the pipe curtain showing the operating state of the mechanism.

The pipe curtain A has upper and lower pipe insertion holes as in the conventional example.
An elliptical plate-shaped link member 1 having 1a and 1b is provided, and a pipe row in which a lower pipe insertion hole 1b in an upper link member 1 and an upper pipe insertion hole 1a in a lower link member 1 are connected to each other is provided. The pipes 2 are provided and inserted into the pipe insertion holes 1a and 1b so as to be assembled. A crime prevention mechanism B is provided at a high place of the pipe curtain A.

The crime prevention mechanism B includes a plurality of engaging link members 3 each having a long hole 3a and a leaf spring provided on each end of the engaging link members 3'disposed on both ends of the engaging link member 3. Locking member 4
And an engaging portion 5a for locking the locking member 4 provided on the guide rail 5.

The engaging link member 3 is formed in an elliptical plate shape having the same shape as the link member 1, one pipe inserting hole is formed in a long hole 3a extending in the longitudinal direction of the engaging link member 3, and the other pipe inserting hole is formed. Hole
3b is formed in a circular shape similar to the link material 1.

Then, the engaging link members 3 are prepared by the number of link rows extending in the width direction of the front opening, and the pipe curtain A has the same height sideways (a height of 2 meters or more) out of reach of a person. The long holes 3a are connected to the upper and lower link members 1 in a row so as to face upward.

The engagement link member 3 is lifted by the pipe curtain A below that position, and the pipe curtain A is regulated by the pipe 2'inserted into the long hole 3a of the engagement link member 3, and the pipe curtain A is moved by the length of the long hole 3a. I am going to go up.

Of the above-mentioned engaging link members 3, the engaging link members 3'at both ends which are fitted into the guide rails 5 are attached with leaf spring-like locking members 4 on their outer side surfaces with screws 4a. is there.

The locking member 4 has its base end attached to the engaging link member 3'of the end, and the free end on the tip side is directed from the lower part of the pipe 2'inserted into the elongated hole 3a toward the axial direction of the pipe. They are mounted alongside each other, with the free end on the tip side slightly protruding from the end of the pipe 2 '.

Then, by lifting the pipe curtain A, the engaging link material 3,
When 3'is raised, the locking members 4 on both sides further come into contact with the pipe 2'to bend and project outward (to the guide rail 5 side).

Further, on the inner wall side of the bottom portion 5b of both guide rails 5 where the locking member 4 is located when the pipe curtain A is fully closed, a recessed engagement for locking the tip end by the projection of the locking member 4 is provided. A joint 5a is formed.

The locking member 4 is locked to the engaging portion 5a to prevent the pipe curtain A from being lifted.

Therefore, if the pipe curtain A is to be lifted after closing the pipe shutter, the crime prevention mechanism B operates as follows.

That is, as shown by phantom lines in FIGS. 2 and 3,
The pipe curtain A below the engaging link material 3 is lifted up by the length of the long hole 3a, and the locking member 4 abutting on the pipe 2'bends further during that time and the tip projects outward, so Is engaged with the engaging portion 5a of the guide rail 5,
It prevents the pipe curtain A from being lifted to a height higher than that.

Therefore, it is possible to ensure safety in terms of crime prevention, and to achieve an inexpensive crime prevention mechanism with a simple structure.

Next, another embodiment of the crime prevention mechanism will be described. FIG. 4 is a front view of another embodiment of the crime prevention mechanism with a pipe curtain partially omitted.

In this embodiment, mounting bases 10 are provided so as to project on the engaging link members 3'on both ends, and a locking member 11 in which an inclined surface 11a is formed on the upper portion of a substantially square pole (cylinder may be used) is used as a spindle. 12 is pivoted. This locking member 11 is oriented so that its inclined surface 11a faces the engaging link material 3'of the end portion.

Further, a torsion coil spring 13 having one end engaged with the locking member 11 and the other end hooked with the mounting base 10 side is wound around the support shaft 12 so that the locking member 11 is always at the end of the engaging link member 3'side. Is urged to.

On the other hand, on the inner wall side of the bottom portion 5b of the guide rail 5, a locking member is provided.
An engaging portion 14 for contacting and locking the inclined surface 11a of 11 is provided in a protruding manner. The lower end portion of the engaging portion 14 is formed into an inclined surface 14a so that the engaging portion 14 comes into surface contact with the inclined surface 11a of the locking member 11.

Therefore, when the pipe curtain A is lifted, the locking member
When 11 also rises by the length of the long hole 3a, its inclined surface 11a abuts the pipe 2 ', and the inclined surface 11a is slid on the pipe 2'against the urging force of the torsion coil spring 13 and shown by a virtual line. Thus, the pipe curtain A is prevented from being lifted to a higher height by being locked by the engaging portion 14 of the guide rail 5 as it is lifted.

The present invention is not limited to the above-mentioned two embodiments, and various stresses and modes can be adopted in accordance with the gist of the present invention.

For example, the engagement link member may be positioned upside down with respect to the embodiment. In this case, since the pipe inserted into the long hole is lifted when the pipe curtain is lifted up, it suffices to bring the locking member into contact with the pipe and project toward the inner wall of the guide rail.

Further, although the example in which the locking member comes into contact with the pipe and projects toward the bottom of the guide rail is shown, the locking member may come into contact with the pipe and project toward both side walls of the guide rail. In this case, the engagement portion may be provided on both side walls of the inner wall of the guide rail. Furthermore, the mounting height of the engaging link material is
A height that does not reach even when a person reaches out is suitable, and the point is that the pipe curtain above the engaging link material cannot be lifted when the pipe curtain is lifted.

[Effect of device]

Since the present invention is configured as described above, even if an attempt is made to lift the pipe curtain when the pipe shutter is closed, the pipe curtain below the engaging link material is slightly lifted, so that the end engagement is prevented. Since the locking member attached to the link member comes into contact with the pipe inserted through the elongated hole and the tip projects outward, the locking member is locked to the engaging portion provided on the inner wall side of the guide rail, and further. The pipe curtain is prevented from being lifted to the height of.

Therefore, to prevent the pipe curtain from lifting,
It is possible to provide a security mechanism that has a simple structure and is inexpensive, as well as ensuring safety in terms of crime prevention and eliminating the need to provide a locking device such as an electric means as in the conventional case.

[Brief description of drawings]

1 is a perspective view of a pipe curtain showing a part of a crime prevention mechanism, in which a part thereof is omitted, and FIG. 2 is a pipe curtain showing an operating state of the crime prevention mechanism. FIG. 3 is a partially omitted plan view of a pipe curtain showing an operating state of the crime prevention mechanism, and FIG. 4 is a partially omitted front view of a pipe curtain showing another embodiment of the crime prevention mechanism. . 5 to 7 of the drawings relate to a conventional example, FIG. 5 is a side view of an electric pipe shutter, and FIGS. 6 and 7 are explanatory views showing a lifted state of an electric pipe shutter. A: Pipe curtain B: Security mechanism, 1 ... Link material 1a, 1b ... Upper and lower pipe insertion holes 2, 2 '... Pipe, 3 ... Engagement link material 3' End engagement material 3a ...... long hole, 3b ... pipe insertion hole 4 ... locking member, 5 ... guide rail 5a ... engaging part 5b ... bottom of guide rail 11 ... locking member, 11a ... inclined surface 12 …… Support shaft, 13 …… Torsion coil spring 14 …… Engagement part

Claims (1)

[Scope of utility model registration request] 1. A pipe curtain in which pipes are connected in parallel to each other by arranging a link row in which link materials having upper and lower pipe insertion holes are sequentially connected are connected to a winding shaft which is interlocked with an opening / closing machine. In a pipe curtain in which the pipe curtain is guided by guide rails provided on both sides of the frontage opening / closing portion and can be freely wound and rewound, the link material in a horizontal row at a high place has upper and lower pipe insertion holes. It is composed of an engaging link material formed in an elongated hole extending in the direction, and the end of the engaging link material is brought into contact with the pipe inserted into the elongated hole by lifting the pipe curtain below the engaging link material. A crime prevention for a pipe shutter having an opening / closing device, characterized in that a locking member protruding toward the inner wall of the guide rail is provided, and an engaging portion for locking the locking member is provided on the inner wall side of the guide rail. mechanism.