JPH0536954Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is used to prevent gaps that occur between various types of pipe shutters installed in various structures and the floor surface when they are lifted up when closed. This relates to a lifting prevention device when a pipe shutter is closed.

(Prior art) In general, grid-type shutters are lighter than ordinary shutters, so when the lower part of the shutter is lifted when the shutter is closed, the pipe shutter freely rotates back and forth at the joint. Therefore, the pipe shutter may be folded back and forth inside the winding barrel located at the top, causing the entire pipe shutter to lift up and create a gap between it and the floor, making it easier for people to enter the building and causing disasters such as theft. It may be suitable. That is, conventional pipe shutters have the disadvantage that, compared to devices for preventing lifting, the lock is attached to the lower end of the shutter, which requires a lot of work and is very expensive.

(Problem to be solved by the invention) In pipe shutters, it would be very convenient if a simple structure could prevent the shutter from being raised easily, even manually, when the shutter is closed. be. Further, even if a winding prevention device is provided, the pipe shutter needs to be a device that can easily wind up and wind down the winding shaft.

However, there is currently no pipe shutter that meets these demands, and the appearance of one has been awaited. This invention was devised to meet such demands.

(Means for Solving the Problem) The device for preventing lifting of the pipe shutter when closing the pipe shutter of this invention is intended to solve the above-mentioned problem. 4, 4 are sequentially connected and assembled to the horizontal pipe 2, and stop pins 6, 6 are installed above and below these outer links 3, 3.
The stop body 5, which is pivoted and prevented from rotating by the stop pins 6, 6, forms a semi-cylindrical part 8 with openings 9 at both ends, and the inner links 4, 4 are fitted into the stop body 5. The above object is achieved by fitting the upper and lower horizontal pipes 2 from the outer periphery thereof.

(Example) Next, an example of this invention will be described with reference to the drawings. Further, the drawings merely show one embodiment of the invention, and the invention is not limited to this embodiment. The pipe shutter 1 has several stages of horizontal pipes 2, 2...
The shutter is constructed by alternately fitting and constructing outer links 3, 3 and inner links 4, 4 facing each other.
The outer links 3, 3 are pivoted through stop pins 6, 6 in a state that connects both vertically.
Next, the stop body 5, which is prevented from rotating beyond a certain level by the stop pins 6, 6, is provided with opposing strips 7, 7, and has horizontal pipes at both ends of each strip 7, 7. Semi-cylindrical parts 8, 8 are formed to fit into the semi-cylindrical parts 2, 2, and opposing opening edges 14, 14 are provided at each end of the semi-cylindrical parts 8, 8 to form openings 9, 9, and the openings 9, 9 are formed. The edges 14, 14 can be stopped correspondingly to the stop pins 6, 6, and the stop body 5 is installed between the opposing inner links 4, 4. The openings 9, 9 are formed to have a predetermined width within the range in which the inner and outer links 3, 3, 4, 4 are bent when the shutter is wound around the winding drum. Reference numeral 10 indicates various types of attachments for fixing the opposing strips 7, 7 of the stopper 5 together, 11 indicates through holes provided at both ends of the outer links 3, 3, and 12 indicates a winding shaft. 13 indicates the left and right guide rails of the stored winding barrel, and 15 indicates the seat plate at the lower end of the shutter 1.

(Function) This device has the above-mentioned configuration, and to explain its usage now, when the lower part of the shutter 1 is lifted from outside while the pipe shutter 1 is closed, the guide rails at both ends of the shutter 1
3 and 13, there is no gap between the inner and outer links 3 and 4, so they are not folded.However, in the upper part of the guide rail, that is, within the winding drum, each link 3 and 4 is connected to the horizontal pipe 2. It tries to rotate in a zigzag pattern around the center. From the state shown in Figure 3,
When the outer link 3 rotates when the shutter 1 is forcibly lifted, the stop pin 6 moves inside the opening 9 and stops when it hits the opening edge 14 of the semi-cylindrical part 8, and the outer link 3 rotates. Since rotation is prevented, the ascent is almost stopped. Furthermore, when the inner link 4 similarly rotates, the tip of the opening edge 14 of the opening 9 of the stop body 5 hits the stop pin 6 of the outer link 3 and is prevented from rotating. This can stop it from rising. Therefore, when the shutter 1 is closed, it is absolutely impossible to create a gap between the shutter and the floor even if the shutter is lifted.

(Effects of the invention) As explained above, according to this invention, when the pipe shutter is closed, it is possible to reliably prevent third parties from entering the pipe shutter, and even if the pipe shutter is forcibly pushed up, each shutter The link does not rotate, so there is no need for the link to fold up in a zigzag manner and rise, and there is an excellent effect in that there is no gap formed between the lower end of the shutter and the floor. In addition, it does not cause any hindrance to the winding operation of conventional winding pipe shutters and can be used safely for a long period of time. In addition, stop pins are pivoted on the top and bottom of the outer link, and the opening edges of the stop body installed between the inner links are made to correspond to the stop pins, so the structure is very simple, there is no failure, and each This has the effect of reliably preventing rotation due to lifting of the link. In addition, depending on the opening formed by the opening edges provided at each end of the upper and lower semi-cylindrical parts of the stop body, the size of the opening can be adjusted as appropriate in accordance with the rotation angle due to the winding of the inner and outer links. This has the effect of being very structurally convenient. Furthermore, the stop body installed between the opposing inner links has a special advantageous effect of reliably preventing each unit of the inner and outer links from rolling relative to each other.

[Brief explanation of the drawing]

Fig. 1 is a front view of a pipe shutter using this invention, Fig. 2 is a longitudinal sectional front view of the joints of each link with some parts cut out, and Fig. 3 is a longitudinal sectional side view of Fig. 2. FIG. 4 is a perspective view of the stop body, and FIG. 5 is a perspective view of the outer link. Code 1 is pipe shutter, 2 is horizontal pipe, 3
4 is an outer link, 4 is an inner link, 5 is a stop body, 6 is a stop pin, 8 is a semi-cylindrical portion, 9 is an opening, and 14 is an opening edge.

Claims (1)

[Scope of utility model registration request] The pipe shutter 1 has several stages of horizontal pipes 2, 2.
Outer links 3, 3 and inner links 4, 4 relative to ...
and a stop body 5 which is vertically fitted and connected alternately, and stop pins 6, 6 are pivotally attached to the upper and lower outer links 3, 3, and rotation is prevented by the stop pins 6, 6. In addition to providing opposing strips 7, 7, semi-cylindrical portions 8, 8 into which the horizontal pipes 2, 2 are fitted are formed at both ends of each of the strips 7, 7, and the semi-cylindrical portions 8, 8 Opposed opening edges 14, 14 are provided at each end to form openings 9, 9, and the opening edges 14, 14 can be stopped correspondingly to the stop pins 6, 6, and the stop body 5 can be stopped. A lifting prevention device when a pipe shutter is closed, characterized in that it is installed between opposing inner links 4, 4.