JP2884103B2 - Elevating curtain door - Google Patents

Abstract

A rolling or folding doorway shutter, for use e.g. in an industrial or commercial building, consists of vertical supports (1,2) on either side of the doorway, connected by a cross member (3) at the top. Each support contains a slider guide for the door shutter (4) which is roller or folded at the top. The shutter is reinforced by a number of horizontal bars (5) which have their ends moving in the sliders. At least one of the bars has a flexible section (e.g. spring-loaded and telescopic) which enables it to jump out of the slider in the event of an abnormal transverse effort being applied to it, without creating any permanent deformation in the bar which might ultimately affect the operation of the shutter. The bar's flexibility can be provided in the centre or at one or both ends, and the slider containing the flexible bar can have a branched track to allow for the replacement of the bar once it has been deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to doors for industrial buildings, houses, hangars, warehouses, etc., and particularly to doors which are closed by opening and lowering an entrance passage by raising, and when wound up, are folded or folded. The present invention relates to a door constituted by a retractable or foldable flexible, semi-rigid or rigid curtain housed at the top. Some of this type of door is subject to the action of wind. For this reason, various means for preventing the door from being deformed and damaged or clogged are conventionally known. For example, the vertical edge of the curtain is provided with a thick portion or a skid is fixed so that it slides in a channel (like a boat sail). Further, horizontal reinforcing bars are arranged at intervals in the vertical direction, and both ends of the horizontal reinforcing bars are slid on slideways. The present invention particularly includes a door frame composed of two vertical side upright pillars interconnected at their top ends by cross members, each of these vertical side upright columns including a sideway, Have a guide wall on either side of the curtain so that the curtain can be rolled up or folded together at the top and the curtain has a plurality of ends sliding in the sideways. The vertical curtain door is reinforced by a horizontal curtain reinforcing rod.

Such systems have the disadvantage that the door is damaged in various traffic accidents, such as when a vehicle collides with the door before the door is fully opened. In fact, in such a case, the door catches and cannot be opened, and to fix it requires disassembly of the door.
During this time, access is interrupted and repair costs are high. The curtain is torn, of course, and the bent horizontal reinforcing bar must be pulled out, which is troublesome.

The present applicant has already proposed a reinforcing rod device in which weak ends are included at both ends sliding in a slideway. In this proposed device, when the reinforcing bar is impacted, the end of the reinforcing bar breaks and the door still operates. In this case, one end of the reinforcing rod is no longer guided quickly, but this can easily be fixed by replacing the damaged part.

Although the above-described system has advantages in many applications, it is not suitable for all applications, especially when it is not permissible to take sufficient time to perform repairs.

It is an object of the present invention to provide a door or at least a part of a door component that is not permanently deformed when a vehicle collides with a curtain before it is fully opened or when excessive wind acts on the curtain. In order to prevent the door from being damaged when exposed to it, thus allowing the door to be simply actuated and returned to its normal position without any other effect. is there.

That is, according to the present invention, it includes a door frame composed of two vertical side upright pillars having their top ends interconnected by a horizontal member, and each of these vertical side upright pillars includes one slideway. , Each slideway has a guide wall on either side of the curtain, so that the curtain can be rolled up or folded and assembled at the door top, and the curtain slides in the slideway. An elevating curtain door reinforced by at least one horizontal curtain stiffening bar having both ends, wherein at least one of the at least one curtain stiffening bar has sufficient flexibility for at least a portion of its entire length, and Lateral forces acting on this curtain stiffener will interfere with the subsequent operation of the curtain Without giving UNA permanent deformation to the curtain reinforcing bar lifting curtain door, characterized in that it made it possible to deviate from at least one of the slideways is provided.

According to one embodiment of the present invention, the at least one curtain stiffening bar is generally flexible.

According to a variant of the invention, at least one curtain reinforcing bar is flexible in its intermediate part.

According to another embodiment of the present invention, at least one curtain reinforcing bar has deformable ends.

The above arrangement allows the door to withstand impact or abnormal thrust without damage. However, it is necessary to return the curtain reinforcing bar to its original position after removing one of the curtain reinforcing bars from its slideway. Thus, the present invention also provides an apparatus that facilitates returning this curtain reinforcing bar to the dislodged slideway. Preferably, according to the invention, the curtain reinforcing bars are automatically turned on without any special action while the door is being lifted or lowered after the door is opened. You will return to the slideway.

To this end, in one embodiment of the invention, the two outer walls of the slideway or the two walls fixed to the slideway are formed by two walls extending opposite each other towards the center of the door. And defines an upright surface provided at an angle to the surface.

Preferably, the vertical length of the slideway is limited to a level located just below the lowermost curtain reinforcing bar when the curtain is raised, and the slideway opens upwardly at its top end. Having an opening,
This ensures that when the curtain is lowered from its raised position, the end of at least one of the curtain reinforcing bars engages in the upwardly open top end of the slideway.

According to a preferred embodiment of the present invention, the wall of the slideway or the wall of the upright column containing this slideway contains at least one elastically deformable moving wall element, whereby the end of the curtain reinforcing bar is Is formed from the outside of the slideway to the inside of the slideway, but not in the opposite direction.

According to another preferred embodiment of the present invention, at least one of the upright outer walls including the slideway on which the moving wall element is mounted is placed on the moving wall element and the passage from the outer wall. Providing a protruding, generally upwardly directed guide that extends to the edge of the slideway over at least a portion of the entire width of the outer wall, and that when the curtain stiffener bar off the slideway is pulled upward, The end of the detached curtain reinforcing rod is returned to the slide way through the passage.

The above-mentioned features and advantages of the present invention will become more apparent from the non-limiting examples of the present invention illustrated in the accompanying drawings and detailed below.

FIG. 1 is a perspective view of one embodiment of a door frame for a curtain type door according to the present invention. The door frame includes two vertical side upright columns 1 and 2 interconnected at their top ends by cross members (cross bars) 3 forming a lintel.

The cross section of each upright column has a pentagonal shape.
The square is open at one of its vertices and has a base a, two sides b extending vertically to the base, and two sides c extending toward each other and leaving a gap d between adjacent ends;
This provides an opening in each of the upright slideways, forming an opening suitable for accommodating the corresponding edge of the curtain 4 with a plurality of horizontal curtain reinforcing bars 5. To facilitate the understanding of the drawings, it is assumed that the curtain 4 is made of a transparent material (this is actually possible and in some cases has been adopted).

FIG. 2 is a horizontal sectional view of the upright pillar and one end of the curtain reinforcing bar, showing how the curtain reinforcing bar is arranged in the slideway.

According to the present invention, the curtain reinforcing bar is sufficiently deflected when exposed to the thrust so that it can leave the guide groove before it is permanently deformed or gives permanent deformation to the guide groove. It is. This is achieved by making the curtain stiffener assembly flexible. This flexibility is provided by a glass fiber reinforced plastic tube that can absorb considerable non-permanent deformation, so that one or both of its ends can leave the groove without permanent deformation or breakage Can be. Flexibility is limited to a portion of the curtain reinforcing bar, for example, at the middle or both ends. The intermediate part of the curtain reinforcing bar can be constituted by a more flexible part, for example an elastic sleeve or a coil spring, which makes it possible to bend the curtain reinforcing bar.
As shown in FIG. 2, the curtain reinforcing bar 5 can also be provided with an end piece 6 made of a flexible material such as rubber. These end pieces 6 engage both ends of a curtain reinforcing bar 5 which is a tube of metal or other material. The end piece 6 is semi-rigid, can withstand normal thrust (wind) or slightly higher thrust, and has a narrow area 6a, where sudden thrust or very strong thrust can be obtained. It makes it possible to bend when you join.

FIG. 3 is a sectional view of another embodiment of the end of the curtain reinforcing rod. In this embodiment, the curtain reinforcing bar 10 includes a tube 12 having a mandrel 13 at its end and a spring 14 engaged with the mandrel 13. The dimensions of the mandrel 13 and the spring 14 are such that they can simply be pressed together as shown and held together without any additional means. Although not absolutely necessary, it is preferable to avoid the need for operations such as riveting and welding. Alternatively, one end of the spring 14 can engage the inside of the tube 12. Similarly, the end piece 15 constituting the slider shoe is fixed to the other end of the spring 14. It is preferred that the spring 14 does not directly contact the slideway 21 due to material wear and the need to reduce noise during operation. If a sufficiently large force is applied to the curtain reinforcing bar 10, its end or end piece 15 will be deformed at the end of the curtain reinforcing bar, i.
Get off. No damage occurs at this time. Also, after thus disengaging from the slideway, the end of the curtain reinforcing bar may be subjected to an appropriate thrust or manually bent over the end piece 15 and returned into the slideway. Things can be done easily.

Under such conditions, when an excessive force is applied to the door, the curtain reinforcing rods 5, 10 come off the slideway due to their flexibility.

It would be desirable to eliminate the need for manual operation to return the curtain stiffening bars back into the slideway. Second
In the figure, the surface c of the upright column 1 constituting the slide way
The direction in which it extends obliquely facilitates the re-insertion of the curtain reinforcing bar into the slideway by the effect of the upward force exerted on the curtain reinforcing bar 5 by the curtain when the curtain is raised. It is also preferable to adopt a complementary arrangement for forcibly returning the end of the curtain reinforcing bar to the inside of the slideway. To this end, as shown in the embodiment of FIG. 4, the slide way 21 is positioned slightly below the part in which the curtain 4 is accommodated, that is, the part which is wrapped as shown in cross section above this figure. The top end 21a is made to come. The top end 21a of the slide way is an end having an opening that opens upward, so that when the curtain 4 is lowered again, both ends of the curtain reinforcing bar 5 naturally engage with the slide way 21. is there.

When the curtain 4 is being raised, the curtain reinforcing rod 5
The reinsertion ramps (or re-centering surfaces) 7a, 7b forming the ramp guide are above the upwardly open top end 21a of the slideway 21 to facilitate return of both ends of the slideway to its proper location. And at the bottom of the curtain receiving area, so that when the curtain is raised, both ends of the curtain reinforcing rod return to the axis of the curtain receiving area.

The space between the upwardly open top end 21a of the slideway 21 and the reinsertion ramps 7a, 7b forms a reinsertion window. A plurality of these spaces are provided at the full height of the curtain.

The device described above with reference to FIG. 4 comprises the reinsertion ramps 7a, 7b
Has a gap in the slideway. As the curtain is lowered and crosses this gap, the wind forces will cause the curtain to move off-axis and continue descending outside the slideway. Therefore, this device is not suitable for installation in places exposed to wind and large ventilation. Fifth
FIG. 8 to FIG. 8 show a modification of the present invention for avoiding this restriction.

All of these modifications include the slideway 21 described above. The slide way 21 is mainly composed of two parallel walls 22 and 23 located on both sides of the curtain surface.
And a gap space in which both ends of the horizontal curtain reinforcing bar of the curtain door move. Both ends of the curtain reinforcing bar are guided by walls 22 and 23. The bottom of the groove of the slideway 21 is closed by a wall 24, thereby protecting the inside of the slideway from dust and other foreign substances. According to a feature of the present invention, the slideway 21 is provided with inclined surfaces (protection walls) 25 and 26 on the outside thereof, so that the detached curtain reinforcing rod can be easily reinserted into the slideway. I have to. The slideway 21 generally includes two additional side walls 27 and 28 and a bottom wall 29, thereby forming a rigid assembly.

In the embodiment shown in FIG.
Has no voids. However, a reinsertion ramp 35 is preferably provided near the top of the door. When the curtain reinforcing rod is disengaged from the slide way 21, the end of the curtain reinforcing rod becomes the inclined surface 25 of the section member surrounding the slide way 21.
Alternatively, the surface of the side wall 27 is rubbed. Then, when reaching the ramp 35, the end of the curtain reinforcing rod is pulled by the traction force derived from raising the curtain.
Engages. The end of the curtain reinforcing bar goes up the ramp 35, whereby the curtain reinforcing bar is contracted. This may be achieved by bending the curtain stiffening bar or, if the curtain stiffening bar is of the construction shown in FIG. 3 or FIG. When the end of the curtain reinforcing rod is guided to the end 35A of the ramp 35, the curtain reinforcing rod extends and returns to the slide way 21. Since there is no gap in this slide way, the curtain reinforcing bar does not come off the slide way during the lowering of the curtain even if a strong wind hits the curtain. The ends of the curtain stiffening bars are shown in FIG. 9 to facilitate their shortening, to easily slide along the guides 33 and to facilitate reinsertion into the slideway 21. It is better to use a pull-out type.

That is, in FIG. 9, the sleeve 47 is mounted on the end of the tube 12 of the curtain reinforcing rod 20. This mounting is performed by a press fit or by using a pin 18. This pin 18
At the same time serves to hold the inner end of a spring 19 that biases the piston 14 outward. The piston 41 has the same function as the end piece 15 of the curtain reinforcing rod 10 shown in FIG. However, unlike the previous example,
The 20 ends do not need to be flexible. for that reason,
Slideway when curtain reinforcement bar 20 receives abnormal force
This curtain reinforcement bar so that it can come off from 21
20 must have flexibility as a whole or have a particularly flexible region, for example a central region. However, once this curtain reinforcing rod
When 20 is disengaged from the slideway 21, the piston 41 can be pushed into the sleeve 47 by manual or other means of raising the curtain, due to the appropriate guide ramp to which the piston 41 is directed during the raising of the curtain. It is clear that the curtain reinforcing bar 20 can be returned to the slide way 21. While raising the curtain reinforcing bar 20, the piston 41 is pushed into the pipe 12 by the guide ramp and is guided to the edge of the slide way 21. This instantaneous spring 19 extends freely, and the piston 41 engages in the slideway 21. Therefore, the curtain reinforcing bar can no longer be disengaged from the slideway simply by being pulled down again.

Again in FIG. 5, the reinsertion ramp 35, which is the guide ramp, is shown as a small hollow with respect to the ramp 25. This is not required. This ramp 35 is formed by the protruding rim 33A of the reinsertion guide 33. In this case, the guide 33 may be fixed, movable, or removable. In this case, the inclined surface 25 may also be parallel to the bottom wall 29 of the slide way 21.

In a variant, the ramp 35 can be moved in the form of a flap in order to facilitate a structurally simpler re-insertion of the curtain reinforcing rod, whereby a window is temporarily provided on the wall 23 of the slideway 21. Open. For example,
As shown in FIG. 6, the ramp 35 is in the form of a flap and is hinged about its bottom edge 36,
The part 38 of the wall 23 can be moved in the direction of the arrow 37. FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. The extent to which the ramp 35 is pushed down into the slideway 21 is determined as a function of the nature of the curtain reinforcing bar and its ease of bending or contraction. In practice, this local mobility can be obtained by forming cutouts in the walls of the upright columns.

In another embodiment of the invention, as shown in FIG. 7, to prevent the curtain stiffener from coming off slideway 21 while the curtain is being lowered, the reinsertion window 32 (right side of FIG. The part is adapted to be closed by a shutter 40 (left part in FIG. 7) in the form of a deformable or pivoted flap. When the shutter 40 is in its rest position, it is urged to stay in a plane parallel to the curtain, but when the curtain is pulled up, the end of the curtain reinforcing rod is deformed into the slide way 21 by thrust. This can occupy position 40 '. Once the curtains are collected together at the top of the door, the shutter 40 returns to a position flush with the wall 22 of the slideway 21 and the curtain can be lowered again without the risk of falling off the slideway.

The shutter 40 can be a flexible metal blade with one end fixed by rivets. Alternatively, depending on the elasticity of the material from which the slideway was made,
It may be formed only by forming a notch in the wall of the slideway.

All curtain stiffening bars are made the same. However, it is also possible to use only one curtain reinforcing bar according to the invention, for example the one that is most likely to come off, ie only the bottom curtain reinforcing bar.

[Brief description of the drawings]

1 is a perspective view of a door of the present invention, FIG. 2 is a horizontal sectional view of one of the upright columns of the door shown in FIG. 1, and FIG. 3 is a horizontal sectional view of a modification of the embodiment of FIG. , FIG. 4 is a vertical sectional view of a part of the door of the present invention, FIGS. 5 and 6 are perspective views and sectional views of one embodiment of a slideway of the door of the present invention, and FIGS. FIG. 9 is a perspective view and a sectional view similar to FIGS. 5 and 6 for the example, and FIG. 9 is specially designed to facilitate removal from the slideway and reinsertion into the slideway after an abnormal external force. It is sectional drawing of the edge part of the reinforcement horizontal bar for flexible curtains designed in FIG. 1,2 ... upright pillar, 3 ... horizontal member, 4 ... curtain, 5 ...
... Curtain reinforcement rod, 6 ... End piece, 7a, 7b ... Reinsertion ramp, 10 ... Curtain reinforcement rod, 12 ... Tube, 13 ... Mandrel, 14 ... Spring, 15 ... End Piece, 18 ... Pin, 19
… Spring, 20… Curtain reinforcing rod, 21… Slide way, 21a… Top end, 22, 23, 24… Wall, 25, 26… Inclined surface, 27, 28… Side wall, 29… Bottom wall, 33 …… Guide, 33A…
... Rim, 35 ... Reinsertion ramp, 35A ... End, 36 ... Bottom edge, 40 ... Shutter, 41 ... Piston, 47 ... Sleeve.

Claims (12)

(57) [Claims] 1. A door frame comprising two vertical side upright pillars (1,2) interconnected at their top ends by cross members (3), each of said vertical side upright columns being one of them. A slideway, each slideway having a guide wall on either side of the curtain (4),
A liftable curtain in which the curtain is rolled up or folded together at the door top and the curtain is reinforced by at least one horizontal curtain reinforcement bar (5) having both ends sliding in the slideway. In the door, at least one of said curtain stiffeners (5) has sufficient flexibility for at least a part of its length, so that when an extraordinary lateral force acts on said curtain stiffeners, it hinders the further operation of the curtain. A lifting / lowering curtain door, wherein the curtain reinforcing rod can be disengaged from at least one of the slide ways without giving permanent deformation to the curtain reinforcing bar. 2. A lift-type curtain door according to claim 1, wherein at least one of said curtain reinforcing bars has flexibility as a whole. 3. A curtain door according to claim 1, wherein at least one of said curtain reinforcing bars has a flexibility at an intermediate portion thereof. 4. A curtain door according to claim 1, wherein at least one of said curtain reinforcing bars includes deformable ends. 5. A curtain door according to claim 4, wherein said curtain reinforcing bar (10) has a rigid portion (12) shorter than a distance between said two slide ways (21), and both ends of said rigid portion. Lift-type curtain door, comprising two protective end pieces fixed to the door. 6. A curtain door according to claim 5, wherein at least one of said curtain reinforcing bars is tubular. 7. The curtain door according to claim 1, wherein two outer walls (c; 25, 26) of the slide way or two walls fixed to the slide way face each other toward the center of the door. An elevating curtain door, wherein the elevating curtain door is formed by two extending walls and defines an upright surface inclined with respect to a surface of the door. 8. A curtain door according to claim 1, wherein the vertical length of said slide way (21) is limited to a level located immediately below a lowermost curtain reinforcing bar when the curtain is raised. And the slideway has an opening (21a) opened upward at its top end,
A lift curtain door, wherein the end of at least one of the curtain reinforcing bars engages in the upwardly open top end of the slideway when the curtain is lowered from its raised position. 9. A curtain door according to claim 8, wherein an inclined guide (7a, 7b) is provided above a top end of said slideway, and said inclined guide comes off while raising the curtain. An up-and-down curtain door, wherein the end of the rod is urged back toward the normal vertical sliding surface of the curtain. 10. The curtain door according to claim 1, wherein
The wall of the slideway or the wall of the upright column containing the slideway includes at least one elastically deformable moving wall element (35, 40), whereby the end of the curtain reinforcing bar is moved outside the slideway. An elevating curtain door, wherein a passage is formed to pass from one side to the inside, but not in the opposite direction. 11. The curtain door according to claim 10, wherein
A flap (40) of a slideway wall, wherein the moving wall element extends parallel to the plane of the curtain and is movable about a bottom edge, the flap being a regular slideway path for the end of the curtain reinforcing bar. A liftable curtain door, wherein the liftable curtain door moves in the slideway between two walls that define the curtain door. 12. The curtain door according to claim 10, wherein at least one of the outer walls of an upright column including a slideway to which the moving wall element is attached is connected from the outer wall to the moving wall element and the passage. An upwardly extending, generally upwardly directed guide (33) is provided which extends over at least a portion of the entire width of the outer wall to the edge of the slideway, and the curtain stiffening bars disengaged from the slideway are raised upwardly. An up-and-down curtain door, wherein, when pulled, an end of the detached curtain reinforcing rod is returned into the slideway through the passage.