Locking device for pipe-type folding door

Abstract

To provide a locking device of a pipe-type folding door device with multiple longitudinally extending pipes arranged at regular intervals with their upper frames suspended on a moving suspension wheel for being folded.SOLUTION: A joint is provided between both pipes 3 adjacent to each other, and a guide plate is attached to the joint to guide a drop rod 12, which fits into a drop hole in a lower frame 13 or a floor surface to prevent the frontage from opening, in a vertically movable manner. Also the guide plate is held between the two guide plates by both connecting members located on the front and back sides.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pipe-type folding door, which is configured so that a pipe-type door having a plurality of pipes arranged can be folded via a joint part, and to a locking device that fixes the extended pipe-type folding door so that it cannot be folded. [Background technology]

[0002] Folding door devices that are installed in entrances to open and close the entrances are used in various places. Folding door devices are made up of multiple doors (panels) that are connected so that they can be bent via joints, and are therefore configured to be flexible and expandable. There are various types of doors, and if the door is fitted with glass, the inside can be seen through the glass even when the folding door is extended to close the frontage. However, with a conventional folding door, when the door is extended to close the frontage, the space is completely divided through the folding door device.

[0003] In basement areas, folding doors are often installed at the front of the store, which can be folded up to one side to open up the store entrance. In particular, for stores located in a corner of an underground shopping mall in a city, a folding door device that has a pleasing appearance and allows the interior of the store to be seen is suitable so that it will catch the eye of many people passing through the passageway even after the store is closed.

[0004] By the way, the doors (panels) that make up the folding door are not rectangular plates, nor are they made of glass fitted into a rectangular frame. Instead, pipe-type doors made of a combination of multiple pipes or bars are used, and folding doors in which multiple pipe-type doors are connected via joints are also known. The joints, which are used so that the pipe-type doors bend toward each other, have bearings for restraining the pipes on both sides of the adjacent pipe-type doors.

[0005] The "horizontal sliding shutter" in JP 2007-211424 A is a horizontal sliding shutter configured so that a number of links are folded around a shutter shaft member in a zigzag shape in cross section, alternating across the shutter track, and this allows the shutter to be folded easily and smoothly by pushing one side end from the extended, spread-out state, without complicating the structure or increasing costs.

[0006] The "Side Pipe Curtain" in JP 2005-30180 A is constructed by shifting the center of the joint of the frame that connects the pipes, attaching a stopper so that the panel can be assembled, and providing a resin panel. Also, a guide plate is provided on one side of the guide rail, and the main panel anti-vibration roller is formed to contact the guide plate when stored, which makes folding in a certain direction light and easy, and the use of the panel allows for a thin design and requires less storage space. These "horizontal sliding shutters" and "side pipe curtains" may be somewhat inferior in terms of security compared to conventional folding door devices, but are visually preferable as partition devices for store entrances.

[0007] A folding door is provided with a locking device so that the door can be locked in the extended position to close the opening. In other words, in conventional folding doors, a drop rod is attached to the secondary joint that extends from the upper and lower frames when the door is folded, and when the door is extended, the drop rod descends and can fit into a drop hole provided in the lower rail or floor surface.

[0008] However, the pipe-type folding door device, which is made up of multiple pipes connected via joints, does not have a component equivalent to the auxiliary joint of a conventional folding door device, so the locking device is directly attached to the pipe-type folding door by screws or the like. For example, it can be attached to the joint that connects the pipes, but if it is removed to change the installation position of the locking device, the machined screw holes will remain, marring the appearance of the pipe-type folding door.

[0009] To solve the problem that the drop hole into which the drop rod of the locking device falls is provided in the lower rail or floor surface, the position of the locking device attached to the pipe-type folding door may not be aligned, and the drop rod may not fit into the hole provided in the lower rail or floor surface depending on the location. This requires that the installed locking device be removed and then reinstalled in the correct position, or that the pipe-type folding door be reassembled. On the other hand, there are cases where it is not possible to provide a hole in the lower rail or floor surface at a position where the drop bar of the locking device previously attached to the pipe-type folding door can be fitted. [Patent Document 1] "Horizontal sliding shutter" according to JP 2007-211424 A [Patent Document 2] "Side Pipe Curtain" according to JP 2005-30180 A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0010] Conventional folding doors are made up of multiple doors (panels) connected via joints, and the secondary joints are equipped with drop rods so that the doors can be locked in an extended state to close the opening. In pipe-type folding door devices that do not have secondary joints, the locking device is attached directly to the pipe-type folding door by screws or the like, but this ends up scratching the surface. The problem that the present invention aims to solve is this problem, and provides a locking device to be attached to a pipe-type folding door that can be attached without scratching the surface. [Means for solving the problem]

[0011] The pipe-type folding door device to which the present invention is directed is formed by combining a number of pipes arranged at regular intervals in the vertical direction to form a pipe-type door, and the multiple pipe-type doors are bendably connected via joints to form the pipe-type folding door. The joint has a tube with a hole passing through it to restrain the pipe, the pipe fits into the tube, and when the pipe-type door is bent, the pipe can rotate with the tube as a bearing, so that the pipe-type folding door device can be folded or extended.

[0012] The pipe-type folding door of the present invention is equipped with a locking device, which prevents the straight pipe-type folding door from being folded. The locking device of the present invention has a drop bar attached to a pipe-type folding door, a drop hole formed in the bottom frame or floor surface, and the drop bar descends and fits into the drop hole to lock the pipe-type folding door so that it cannot be folded. The drop bar is disposed between adjacent pipes of the pipe-type folding door, and a guide plate is provided so that the drop bar can be restrained and move up and down.

[0013] The guide plate has a hole through which the drop bar passes, and is sandwiched between two pieces of tie material to hold the guide plate in place. The tie material has restraining parts on both sides so that it can embrace the pipes. The guide plate is sandwiched between the two tie materials and fixed with screws, so that it can be placed in a fixed position without sliding down along the two pipes. Effect of the Invention

[0014] The pipe-type folding device of the present invention is configured by forming a pipe-type door using multiple pipes arranged in parallel at a predetermined interval, and connecting the pipe-type door in a bendable manner at joints. Therefore, even when the structure has multiple pipes arranged at a constant interval and the frontage is closed by extending it, the inside can be seen through the gaps (spaces) between the pipes. By installing it as an opening and closing device for the entrance at the front of a store, the appearance of the store front and the scenery of the city area are improved.

[0015] A drop rod is attached to the pipe-type folding door of the present invention, and the drop rod descends and fits into a hole provided in the bottom frame or floor surface, thereby locking the door, and the pipe-type folding door is not folded to open the opening. The drop bar moves up and down while being guided by a guide plate with a hole, but the guide plate is sandwiched between two pieces of connecting material, and the connecting material is attached by a screw that embraces the pipe. However, the pipe that constitutes the pipe-type folding door is not damaged. And the hole position of the guide plate that guides the drop bar can be adjusted to match the position of the drop hole.

[0016] The locking device of the present invention can attach the drop bar to the position of the drop hole provided in the sill or floor at the site where the pipe-type folding door is installed, without attaching the drop bar to the pipe-type folding door in advance. Moreover, it can easily be adapted to changes in the position where the drop bar is needed. Even if the position of the drop bar is changed, the guide plate that guides the drop bar is held between both connecting members and screwed in place, meaning that holes are not made in the pipe of the pipe-type folding door or a part is not cut out, and therefore no scratches are left on the pipe-type folding door. [Brief description of the drawings]

[0017] [Figure 1] 1 is a front view showing a pipe-type folding door device according to the present invention; [Diagram 2] 2A and 2B are longitudinal cross-sectional views of a pipe-type folding door device according to the present invention, in which (a) is a cross-sectional view of the handle frame in FIG. 1, (b) is a cross-sectional view of a portion of FIG. 1 that does not have a hoist, and (c) is a cross-sectional view of a portion of FIG. 1 that has a guide roller. [Diagram 3] 1A and 1B are cross-sectional views of a pipe-type folding door device according to the present invention, in which (a) shows the folding door extended, and (b) shows the folding door folded. [Figure 4] When each pipe-type door consisting of three pipes is connected by a joint part. [Diagram 5]When each pipe-type door, which is made up of three pipes, is folded up, (a) is a cross-section and (b) is a longitudinal section. [Figure 6] This is a sleeve that fits into a cylindrical hole in the joint. (a) is a front view, and (b) is a bottom view. [Figure 7] FIG. 4 is a plan view of a joint portion that forms tubes at the center and both ends. [Figure 8] 1 is an embodiment showing a locking device, in which (a) the drop bar is raised and (b) the drop bar has lowered and is caught in a trap hole. [Figure 9] 1A is an exploded view of the guide plate on which the drop bar of the locking device is attached, and FIG. 1B is a cross-sectional view of the assembled locking device. [Figure 10] An embodiment in which an insert plate is installed in a pipe space. [Figure 11] 1A is an exploded view of the clamping plate to which the insert plate is attached, and FIG. 1B is a cross-sectional view of the insert plate in place. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Fig. 1 is a front view showing a pipe-type folding door device according to the present invention, with 1 representing a pipe-type folding door and 2 representing a frame, and the pipe-type folding door 1 shown in the figure is in an extended state and attached to the frame 2. The pipe-type folding door 1 is made up of multiple pipes 3, 3... that stand vertically at regular intervals, and therefore, in an extended state, gaps 4, 4... are formed between each of the pipes 3, 3... and the inside (the back of the pipe-type folding door) can be seen through these gaps 4, 4...

[0019] The pipe-type folding door 1 shown in the same figure consists of three pipes 3, 3, 3 which form a set of pipe-type doors 5, 5.... The pipe-type doors 5, 5... are connected by joint parts 6, 6.... The pipe-type doors 5, 5... are bent and folded towards each other via the joint parts 6, 6.... Joints 6, 6... are provided at the upper end, lower end and middle part of one pipe-type door 5. Therefore, by connecting the three pipes 3, 3, 3 at multiple points by the joints 6, 6..., one pipe-type door 5 is formed without twisting.

[0020] The pipe-type folding door 1 has hoist wheels and is suspended from an upper frame 8 via these hoist wheels. Guide rollers are attached to the upper end, and these guide rollers are restrained by guide materials installed along the upper frame 8, restricting the direction (orientation) in which each pipe-type door 5... can be folded and protrude from the upper frame 8. A pull frame 7 is provided at the tip of the pipe-type folding door 1, and the door can be opened and closed by grasping a handle 9 attached to the pull frame 7.

[0021] In Fig. 1, the pipe-type folding door 1 is extended and the frontage is closed, but if the handle frame 7 at the end is pushed, it moves toward the hinge 10 and folds, opening the frontage. Locking devices 11, 11 are attached to the pipe-type folding door 1 of the present invention in two places. That is, the pipe-type folding door 1 shown in the figure has locking devices 11, 11 attached to two places, the handle frame 7 at the end and the middle part, and if the locking devices 11, 11 are activated, the pipe-type folding door 1 is folded and cannot be opened. The lock device 11 has a drop rod 12 which moves up and down, and the lower end of the drop rod 12 can be inserted into a drop hole provided in the lower frame 13.

[0022] FIG. 2 is a vertical cross-sectional view of the pipe-type folding door 1, with hoists 14, 14... provided at various points, and the hoists 14, 14... can be moved while being placed on the upper frame 8. 1(a) shows the handle frame 7 provided at the tip of the pipe-type folding door device 1 shown in FIG. 1, and is suspended by a hoist 14 running on an upper frame 8. 4B shows a longitudinal section of a portion not having a hoist 14. FIG. (c) shows a vertical cross section of the portion having a guide roller 15 at the upper end. A guide material 16 is provided on the upper frame 8, and the direction in which the guide roller 15 protrudes is regulated by the guide roller 15 coming into contact with the guide material 16.

[0023] 3 is a cross-sectional view of the pipe-type folding door 1, (a) showing it in an extended state and (b) showing it in a folded state. Hanging wheels 14, 14... are attached to the upper ends of the pipes 3, 3... at various points of the pipe-type folding door 1, and these hanging wheels 14, 14... move on an upper frame 8, and the pipe-type folding door 1 is suspended. The pipe-type folding door 1 contracts and folds, but the pipes 3, 3... to which the hanging wheels 14, 14... are attached move along the upper frame 8 without coming off from the upper frame 8.

[0024] During the folding operation, the pipes 3, 3 located on both sides of the hoists 14, 14, etc. come off the upper frame 8, but a guide roller 15 is provided at the upper end, and this guide roller 15 comes into contact with a guide material 16 installed along the upper frame 8, regulating the folding operation so that it can be performed in a fixed direction. The pipe 3 located between the two hoists 14, 14 moves at the same position as the hoist 14 without coming off the upper frame 8.

[0025] 4 shows the joints 6, 6... that connect the pipes 3, 3..., (a) is a cross-sectional view and (b) is a front view. Three pipes 3a, 3a, 3a are connected by a joint 6a to form a pipe-type door 5a, three pipes 3b, 3b, 3b are connected by a joint 6b to form a pipe-type door 5b, and three pipes 3c, 3c, 3c are connected by a joint 6c to form a pipe-type door 5c.

[0026] The joint part 6a is fixed to the pipe-type door 5a and riveted to the central pipe 3a with a blind rivet 17 so as to prevent it from moving up and down, the joint part 6b is fixed to the pipe-type door 5b and riveted to the central pipe 3b with a blind rivet 17 so as to prevent it from moving up and down, and further, the joint part 6c is fixed to the pipe-type door 5c and riveted to the central pipe 3c in the same way so as to prevent it from moving up and down. Here, the joint parts 6a and 6c are disposed at the same height, and the joint part 6b is disposed on the lower side, but it may be fixed with a screw instead of the blind rivet 17. In this manner, the pipe-type doors 5a, 5b, 5c... are connected to one another by displacing the joint portions 6a, 6b, 6c... in a vertically offset manner.

[0027] Fig. 5 shows the pipe-type doors 5a, 5b, 5c when folded, (a) is a cross-sectional view, and (b) is a vertical cross-sectional view. As shown in the figure, the joints 6a, 6b, 6c have tubes 18, 18... at the center and both ends, into which the pipes 3a..., 3b..., 3c... are inserted, and sleeves 19, 19... are provided between the pipes 3a..., 3b..., 3c... and the tubes 18, 18... as necessary.

[0028] That is, although there are no particular limitations on the material of the sleeves 19, 19..., resin is generally used, and the pipes 3a..., 3b..., 3c... fit into the tubes 18, 18... via the resin sleeves 19, 19.... Therefore, even when the pipe-type doors 5a, 5b, 5c are bent via the pipes 3a..., 3b..., 3c..., no squeaking noises are generated and no rattling occurs.

[0029] The sleeves 19, 19... have flanges 20, 20... (brims) with an increased outer diameter at one end, which is larger than the outer diameter of the tubes 18, 18..., and the outer periphery of the flanges 20, 20... of the sleeves 19, 19... fitted into the tubes 18, 18... protrudes from the tubes 18, 18.... Therefore, when the pipe-type folding door 1 is folded, the tubes 18, 18... of the joint parts 6a, 6b, 6c connecting the pipe-type doors 5a, 5b, 5c do not come into contact, and the resin flanges 20, 20... come into contact with the outer periphery of the pipe, so that the outer periphery of the pipe is not scratched and no impact noise is generated when folding. Or at least the impact noise can be mitigated.

[0030] 6 is a specific example showing the sleeve 19. The sleeve 19 has a through hole, and a flange 20 is formed at one end (upper end), with the outer diameter of the flange being larger than the outer diameter of the cylinder 18 into which the sleeve 19 fits. The sleeve 19 has a ridge 21 on its outer periphery that is parallel to the central axis. However, the height of the ridge 21 is very small. The sleeve 19 is fitted into the cylindrical hole and the ridges 21 are fitted into the recessed grooves 22 formed in the cylindrical hole, so that the sleeve 19 is fixed without rotating.

[0031] 7 is a plan view showing the joint part 6, which has tubes 18, 18, 18 at both ends and in the center. The sleeves 19, 19, 19 fit into these tube holes, and the pipes 3, 3, 3 fit into the holes of the sleeves 19, 19, 19. Grooves 22, 22, 22 are provided on the inner circumferential surfaces of the tubes 18, 18, 18, so that the sleeves 19, 19, 19 fitted into the tube holes do not rotate. In other words, when the pipe-type folding door 1 is folded, the sleeves 19, 19, 19 do not rotate, but the pipes 3, 3, 3 fitted into the sleeves 19, 19, 19 rotate. On the other hand, by providing a ridge in the cylindrical hole and forming a groove on the outer circumferential surface of the sleeve 19, it is possible to prevent the sleeve 19 fitted in the cylindrical hole from rotating.

[0032] Figure 8 shows a locking device 11 that is attached to the pipe-type folding door of the present invention. A drop bar 12 is placed between adjacent pipes 3a, 3b, and the drop bar 12 can move up and down. Two connecting members 23a, 23b that connect both pipes 3a, 3b are provided at two locations at a specified distance. The connecting members 23a, 23b have guide plates 24, and the drop bar 12 can move up and down along guide holes 25 formed in the guide plates 24.

[0033] When it descends, it can fit into the bottom frame 13 or the hole 26 provided in the floor surface, so that the pipe-type folding door 1 is locked without being folded. 8(a) shows the state where the drop bar 12 is rising, and FIG. 8(b) shows the state where the drop bar 12 is falling and the lower end is fitted into the drop hole 26. A pin is attached to the drop bar 12, and when it rises, the pin is engaged and held at a specified height. When it descends, the drop bar 12 rotates 90 degrees so that the pin is not engaged, and the lower end of the drop bar 12 fits into the drop hole 26.

[0034] 9 shows the connecting member 23 constituting the locking device 11. The connecting member 23 has semicircular restraining portions 27, 27 at both ends, and the pipe 3 is embraced by the restraining portions 27, 27... of the front and back connecting members 23a, 23b, and the connecting members 23a, 23b are attached to the pipes 3a, 3b. The pipes 3a, 3b are sandwiched between the front and back connecting members 23a, 23b, and at the same time, the guide plate 24 can be sandwiched between them.

[0035] The front and back connecting members 23a, 23b are screwed together to sandwich the pipes 3a, 3b, and also to fix the guide plate 24. 1A shows an exploded view of the two connecting members 23a, 23b, the guide plate 24, the pipes 3a, 3b, and the screws and nuts, and 1B shows the connecting member 23 assembled and screwed in place. In this way, the guide plate 24 that guides the drop bar 12 is attached by being sandwiched between the two connecting members 23a, 23b, but is not screwed directly to the pipe 3, and therefore no scratches are generated.

[0036] Figure 10 shows a specific example of fitting plates 28, 28... attached to a pipe-type folding door 1. Connecting members 23, 23 are attached to adjacent pipes 3a, 3b, and the fitting plate 28 is attached by the connecting members 23, 23. The connecting members 23, 23 are the same as the structure in which the drop bar 12 is attached, and are attached to the pipes 3a, 3b at a specified interval, and the upper and lower ends of the fitting plate 28 are sandwiched between front and back connecting members 23a, 23b provided above and below, and the front and back connecting members 23a, 23b are fixed with screws. Here, the specific form of the inlay plate 28 is not limited, and there are various uses and functions of the inlay plate 28. For example, it can be attached as a decoration for the pipe-type folding door 1 or for store publicity and advertising.

[0037] 11(a) and (b) show a developed sectional view and an assembled sectional view when the fitting plate 28 shown in FIG. 10 is attached. 11 shows the connecting member 29 to which the fitting plate 28 is attached. The connecting member 29 has rectangular restraining portions 30, 30 at both ends, and the inner surfaces 31, 31 are capable of restraining a pipe with a rectangular cross section. The connecting members 29, 29 are then attached to both pipes. The pipe is sandwiched between the front and back connecting members 29a, 29b, and at the same time, the fitting plate 28 can be sandwiched therebetween. The front and back connecting members 29a, 29b are screwed together to sandwich the pipe and to fix the fitting plate 28, without damaging the pipe. [Explanation of symbols]

[0038] 1 Pipe-type folding door 2 frame 3. Pipe 4. Gap 5 Pipe-shaped door 6 Joint 7 Handle frame 8 Upper Frame 9 Handle 10 Hanging base 11 Locking device 12 Drop Rod 13 Bottom frame 14 Hanging wheel 15 Guide roller 16 Guide material 17 Blind Rivet 18 tubes 19 Sleeve 20 Flange 21 Convex strip 22 Groove 23 Connectors 24 Guide plate 25 Guide hole 26 Pitfalls 27 Restraint part 28 Insert plate 29 Connectors 30 Restraint part 31 Inside

Claims

[Claim 1] This locking device for a pipe-type folding door has multiple pipes extending vertically, arranged at regular intervals, and the upper frame is suspended from a moving hoist so that the door can be folded. The locking device for a pipe-type folding door has a structure in which a connecting member is provided between two adjacent pipes, and a guide plate is attached to which a drop bar that can move up and down is guided by the connecting member and that fits into a trap hole provided in the lower frame or floor surface to lock the door so that the opening does not open. The guide plate is arranged on the front and back sides of both pipes, and is sandwiched between both connecting members that have restraining portions formed at both ends that embrace the pipes, and is fastened with screws so that the door can be removed.

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