JPH0742832B2 - Panel shutter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel shutter in which each panel forming a shutter curtain is attached to a suspension body such as a roller chain at a predetermined interval and is continuously provided.

[Conventional technology]

As a panel shutter of this type, there is one disclosed in Japanese Patent Application Laid-Open No. 63-55289 previously proposed by the present applicant.

In this conventional example, each panel forming a shutter curtain is attached to a first chain driven by a large sprocket having a large number of teeth at a predetermined pitch equal to or higher than the panel height, and rotates in synchronization with the large sprocket. A second chain driven by a small sprocket with a small number of teeth is connected to a bottom panel forming the lower end of the shutter curtain, and is configured to suspend and raise the panel.

Therefore, when lowering the panel, the lowering speed of the second chain is slower than the lowering speed of the first chain, so that the bottom panel forming the lower end of the shutter curtain descends at a relatively low speed. On the other hand, since the descending speed of the first chain is high, the succeeding panels descend on the bottom panel in a sequentially overlapping relationship, so that the descending panels are in a fitted state, and the fingers between the panels are interdigitated. It is possible to descend without generating a gap sandwiching it, and so-called finger stuffing can be prevented.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional panel shutter, since the other panels except the bottom panel are suspended only by the first chain when the panel descends, the lower ends of these panels are guided to the guide rails. There is a problem that a guide is required and the bottom panel suspended by the second chain is loaded with the weight of all the panels, so that the strength of the bottom panel must be reinforced.

Therefore, the present invention has been made to solve the problems of the above-described conventional example, and at the same time prevents finger jamming accidents of the panel shutter, reduces the load applied to the bottom panel of the panel shutter, and further, each panel It is a technical issue to eliminate the need for a guide to guide the vehicle to the guide rail.

[Means for Solving the Problems]

In order to solve this problem, according to the present invention, the upper and lower ends of the left and right ends of each panel forming the shutter curtain are not less than the panel height of the first suspension body driven at a predetermined speed in the opening and closing direction of the shutter curtain. And the lower end sides of the left and right ends of the respective panels are slidable in the vertical direction on the lower end side of the second suspension body driven at a slower speed than the first suspension body. It is characterized in that it is configured to be hung at a pitch substantially equal to the panel height by a mounting fixture to be mounted.

[Action]

In the present invention, when the panel is lowered, the upper and lower ends of each panel are respectively hung by the first suspension body and the second suspension body, so that the panel posture is stable and each panel is lowered. Since a special guide for guiding the guide rail to the guide rail is not necessary and the lowering of each panel is regulated by the second suspension body having a slow speed, there is a gap between the panels being lowered. It is possible to reliably prevent the finger jamming accident from occurring. In addition, since the panels in which the first suspension body is slack and are vertically stacked are each supported by the second suspension body, the load of all the panels is not applied only to the bottom panel at the lower end, Eliminates the need to make the bottom panel more robust than other panels.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view schematically showing an example of a panel shutter according to the present invention.

In the figure, reference numeral 1 denotes a storage case disposed at the upper part of the frontage, and on the left and right sides inside thereof, a first sprocket 2 and a second sprocket 3 are vertically arranged at a predetermined interval (for example,
The second sprocket 3 and the second sprocket 3 are slightly rearward and have a height substantially equal to a height of a panel 20 which will be described later. These sprockets 2 and 3 are synchronously rotationally driven at the same rotational speed by an endless chain 6 stretched between sprockets 4 and 5 mounted on a rotating shaft supporting them, and the second sprockets 3 are also driven. Is connected to a sprocket 9 attached to an intermediate shaft 8 via an endless chain 7, and the intermediate shaft 8 is connected to a switch 10 via an endless chain 11. In addition,
Reference numeral 12 is a tensioner that gives tension to the endless chain 7.

The first and second sprockets 2 and 3 are provided with chain pressers 13 and 14 on the upper side thereof, and the sprockets 2 and 3 have roller chains 15 and 16 as first and second suspensions, respectively. Is wound around, and one ends of the roller chains 15 and 16 are slidably moored to a chain guide 17 which is inclined from the upper position of the first sprocket 2 to the rear downward direction.

Here, the first sprocket 2 and the second sprocket 3 both have the same pitch, and the first sprocket 2
Number of teeth Z ₁ of, are often set in comparison to the number of teeth Z ₂ of the second sprocket 3, the conveying speed V ₁ of the roller chain 15, and the conveying speed V ₂ of the roller chain 16, for example, the following (1 ) Is set to satisfy the formula.

(V ₁ −V ₂ ) / T = ΔL ………… (1) where T is the time required to move the panel 20 by the height of the roller chain 16 and ΔL is both chains.
This is the difference between the movement amounts of 15 and 16.

On the rear side of the first sprocket 2, an upper guide roller 22 of a panel 20 described later is provided in parallel with the chain guide 17.
A horizontal roller guide 18 is provided for guiding.

A plurality of panels 20, 20 ... Forming a shutter curtain are suspended on the roller chains 15, 16 on both the left and right sides.

As shown in FIG. 2, each of these panels 20 has roller shafts 21 projecting outward on the upper sides of the left and right end surfaces.
An upper guide roller 22 is attached to the tip of 21, a chain attachment plate 23 is attached to the lower end side, and a fitting groove 24 is fitted to the lower end surface and a fitting groove 24 is fitted to the upper end surface. The protruding ridge 25 for fitting is formed.

The chain mounting plate 23 includes a mounting plate portion 23a fixed to the left and right end surfaces of the panel 20, an intermediate plate portion 23b bent at a right angle from its front edge, and a right angle parallel to the mounting plate portion 23a from the intermediate plate portion 23b. By the guide plate portion 23c bent into a, it is formed in a crank shape when seen from a plane, and the guide plate portion 23c has
An elliptical hole 23d extending in the vertical direction is provided so as to project.

Then, the roller shaft 21 of each panel 20 is attached to the roller chain 15 serving as the first suspension body at a predetermined pitch (L + ΔL) obtained by adding the movement amount difference ΔL to the panel height L, and the chain is attached. Into the elliptical hole 23d of the plate 23, a pin 26 projectingly formed at an interval equal to the panel height L with respect to the roller chain 16 serving as a second suspension is inserted, and a snap ring 27 is fitted to the tip thereof. It is worn. This allows each panel
The lower end sides of the left and right ends of 20 are suspended at a pitch substantially equal to the panel height L by a chain mounting plate 23 which is attached to the roller chain 16 serving as a second suspension body so that the lower end sides thereof are slidable in the vertical direction. For example, when the shutter curtain is closed, the pins 26 are located above the oval holes 23d and the respective panels 20 are suspended at a pitch substantially equal to the panel height. The uppermost panel 20 is pulled upward by the roller chain 15 which is the suspension body of No. 1 so that the pin 26 is located below the elliptical hole 23d, and the engagement between the panel 20 and the panel below it is released. It is made to be done.

Next, the operation of the above embodiment will be described. Now, as shown in FIG. 1, it is assumed that each panel 20 is descending, and the fitting concave groove 24 and the fitting convex line 25 between the panels are fitted to each other to close the shutter curtain. .

At this time, since the roller shafts 21 of the panel 20 are attached to the roller chain 15 at a pitch of (L + ΔL), the roller chain 15 is slack and the roller chain 16 is in a substantially tensioned state.

In this state, when the switch 10 is driven to rotate the first and second sprockets 2 and 3 in the clockwise direction as viewed in FIG. 1, the roller chain 16 driven by the second sprocket 3 is in a tensioned state. Therefore, all the panels 20 are simultaneously raised with the rotation of the second sprocket 3. At this time, since the number of teeth Z ₁ of the first sprocket 2 is set to be larger than the number of teeth Z ₂ of the second sprocket 3, the conveyance speed of the roller chain 15 driven by the first sprocket 2 is Fast, top panel 20 at top edge is below it
It is lifted faster than 20 and, as shown in FIG. 3, the uppermost panel 20 levitates and a gap is formed between it and the lower panel 20,
The fitting state between the fitting concave groove 24 and the fitting convex ridge 25 is released.

At this time, the pin 26 of the roller chain 16 is the chain mounting plate.
Since it is engaged in the elliptical hole 23d of 23, it does not hinder the floating of the uppermost panel 20.

While maintaining this state, the roller shaft 21 of the panel 20 and the chain mounting plate 23 reach the positions of the first sprocket 2 and the second sprocket 3, respectively, and when they make a half turn, the upper guide roller 22 causes the horizontal roller guide 18 to move. And the panel 20 is suspended from the horizontal roller guide 18.

After that, as the first and second sprockets 2 and 3 rotate, the upper panel 20 sequentially rises above the lower panel 20, and the upper guide roller 22 orbits the first sprocket 2 and horizontally rolls. It engages the guide 18 and pushes the leading panel 20 backwards.

In this way, the panels 20 are sequentially stored in the storage case 1, the bottom panel 20 at the lowermost end is stored in the storage case 1, and when the shutter curtain is fully opened, the drive of the opening / closing device 10 is stopped. It

When the panel 20 is lifted, each panel 20 except the panel 20 that floats above is individually supported by the roller chain 16, so that the bottom panel 20 at the lowermost end receives the load of the panel 20 above it. Therefore, the vertical mechanical strength of the bottom panel 20 can be reduced.

Also, from the state where all the panels 20 are stored in the storage case 1, the switch 10 is rotationally driven in the opposite direction to the above, and the first and second sprockets 2 and 3 are seen in FIG. When driven to rotate counterclockwise, the bottom panel 20 is first lowered.

At this time, since the pin 26 of the roller chain 16 is inserted into the lower end side of the elliptical hole 23d of the chain mounting plate 23 when the panel 20 is raised as described above, the first sprocket having a high rotational speed at the beginning. Roller chain driven by 2
The panel 20 is suspended by 15 and as the panel 20 descends, the panel 20 descends with respect to the pin 26 due to the slow conveyance speed of the roller chain 16, and finally the pin 20
26 engages with the upper end of the oval hole 23d of the chain mounting plate 23,
Further lowering of the panel 20 is restricted, and the panel 20 is lowered at the conveyance speed of the roller chain 16.

Then, the succeeding panel 20 is separated from the horizontal roller guide 18 and starts descending, and is descended also while being guided by the roller chain 16 in the same manner as described above, into the fitting groove 24 on the lower end surface thereof. The fitting convex strips 25 on the upper end surface of the bottom panel 20 are fitted to each other, and the lowering with respect to the roller chain 16 is stopped.

In the same manner, each panel 20 is sequentially lowered, fitted to the preceding panel 20 at a position slightly lower than the storage case 1, and when the bottom panel 20 is grounded, the drive of the opening / closing device 10 is stopped and the shutter is released. The curtain is closed.

When this panel 20 descends, each panel 20 fits with the preceding panel 20 at a position slightly descended from the storage case 1, and thereafter it is individually supported by the second roller chain 16 and descended, so that each panel is interlocked. It is possible to surely prevent the so-called finger jamming from occurring because there is no gap for inserting the fingers, because the descent is performed in a state where the spaces are firmly attached.

Further, since the roller chain 15 always receives only the load for one panel, it is possible to use a thin and inexpensive chain by dropping the count.

In the above embodiment, the case where the chain mounting plate 23 is formed in a crank shape has been described, but the present invention is not limited to this, and as shown in FIG. A cubic resin block 30 penetrating the pin 26 may be inserted thereinto to increase the strength of the chain mounting plate 23.

Further, in the above embodiment, the case where the number of teeth Z ₁ and Z ₂ of the first and second sprockets 2 and 3 is made different to make the conveying speed of the roller chain 15 faster than that of the roller chain 16 has been described. It is not limited to this,
By setting the first and second sprockets 2 and 3 to have the same number of teeth and different pitches of the roller chains or different rotation speeds of the sprockets 2 and 3, the conveyance speed of the roller chain 15 is made faster than that of the roller chain 16. You may do it.

Furthermore, the first and second suspensions are both roller chains 1
It is not necessary to use 5, 16 and one of them may be a wire.

〔The invention's effect〕

As described above, the panel shutter according to the present invention is
While the bottom panel forming the lower end of the shutter curtain is descending, it is possible to descend the leading panel starting from the bottom panel and the succeeding descending panel in a state in which they are connected to each other without a gap, and During this descent, it is possible to prevent each panel from being individually supported by the second suspension body so as to prevent an excessive load from being applied to the bottom panel. 1
It is supported by the suspension body and the second suspension body, and its descending posture is stable. Therefore, it is not necessary to separately provide a guide guide or the like for guiding each panel into the guide rail. Have an effect.

[Brief description of drawings]

FIG. 1 is a front view schematically showing an example of a panel shutter according to the present invention, FIG. 2 is a perspective view of a panel, and FIG. 3 is a front view similar to FIG. 1 for explaining the operation of the present invention. Fourth
The figure is a perspective view similar to FIG. 3 showing another embodiment of the present invention. Explanation of code 15 …… First suspension body (roller chain), 16 …… Second suspension body (roller chain), 20 …… Panel, 21 …… Roller shaft, 23 …… Chain mounting plate.

Claims (1)

[Claims] 1. The upper and lower ends of the left and right ends of each panel (20) forming the shutter curtain are above the panel height of a first suspension (15) driven at a predetermined speed in the opening and closing direction of the shutter curtain. A second suspension body (16) which is attached at a predetermined pitch and whose lower end sides at the left and right ends of the respective panels (20) are driven at a lower speed than the first suspension body (15). A panel shutter, characterized in that the panel shutter is hung at a pitch substantially equal to the panel height by a fitting that is slidably mounted in the vertical direction.