JP4122322B2 - Rotating folding door - Google Patents

Description

In the present invention, the first door and the second door are connected in a foldable manner via a connecting member having two connecting shafts , and are configured to be rotatable around the connecting shafts. It relates to folding doors. In the following description, the second door is a door having the same width or a narrow width as the first door.

As this type of rotating folding door, the folding revolving door 3 is composed of a combination of a narrow child door 4 and a wide parent door 5, and the child door 4 and the parent door 5 are arranged on one side thereof. A foldable revolving door having a structure in which the doors 4 and 5 are attached to a vertically long gate-type door frame 2 is proposed. (See Patent Document 1)

The foldable revolving door has a connecting member that pivotally supports the inner upper and lower ends of both the parent and child doors, is coaxial with the connecting shaft of the connecting member, and is integrally coupled to the parent and child doors. Folding connecting means consisting of a pair of gears of the same size meshing with each other, and hollow summing rubbers each having a semi-cylindrical outer peripheral surface are stretched inside the child door and the parent door, It is arrange | positioned so that the semi-cylindrical outer peripheral surface of summon rubber may face. Then, on the facing portion of the protruding end of the semi-cylindrical outer peripheral surface of the summoning rubber, an engaging ridge is formed in the vertical direction. Sealed.

The above-mentioned foldable revolving door is a child door in which a vertically long metal door connecting frame member having a cylindrical portion capable of receiving the connecting shaft of the upper and lower connecting members at the center thereof has an elongated rectangular surface shape. Are attached along the vertical side of the connecting side of the main door, and a hollow summing rubber is fitted and stretched as a cover member having a semi-cylindrical outer peripheral surface on the outer side of each door connecting frame member . The door connecting frame member is provided with a flange portion having a recess opening toward the cylindrical portion, and is formed along both side edges of the half-divided portion of the vertically long summon rubber having a donut-shaped cross section. The joining portion is engaged, and the summing rubber is thus attached to the door connecting frame member. In this case, the engagement between the flange portion and the engaging portion is performed as follows. That is, the engagement portion is also formed with grooves corresponding to the flange recesses, and the mating protrusions are fitted into these grooves and recesses, respectively, so that these engagements are made.
Japanese Patent No. 3321098

  However, the folding revolving door described in Patent Document 1 has a structure that maintains the engaged state against the force in the direction in which they are separated from each other in the engagement with the door connecting frame member. It is not a structure that maintains the engaged state against the force in the direction. Since the cover member (summing rubber) is fitted in the door connecting frame member with a structure that maintains the engaged state against the forces in the direction in which they are separated from each other, the cover member is connected to the door connecting frame member. If there is a gap between the two rubbers, it is easy for rattling to occur, and when the door is sealed, the impact caused by the collision between the ridges of the two summing rubbers and the wind pressure generated by the close movement of the two summing rubbers and the ridges Therefore, there is a possibility that the child door and the door connecting frame member of the parent door may come off.

Therefore, it is necessary to engage in a very high accuracy both as a cover member, not suitable member that deforms in size and more expansion of the temperature difference, the use of the elastic member such as rubber, The hollow summon rubber as a cover member fitted into the door connecting frame member is selected and used with a high accuracy of the semi-cylindrical diameter so that no gap is generated between the door connecting frame member, Improvement of the rotating folding door has been desired because it takes time and labor for manufacturing and management.

Furthermore, folding revolving door described in Patent Document 1 includes a connecting member pivotally supported a child two doors inside the lower end of each other, integrally with the connecting shaft coaxial with and the parent-child two doors of the connecting member together are combined, because it has a connecting means folding consisting of a pair of gears of identical size interlocking, accidental, such as child pair of gears meshing with each other will sandwich the hands and toes accident From the viewpoint of safety of the folding connecting means, improvement of the rotary folding door is desired.

  Therefore, one of the problems to be solved by the present invention is that, even if a gap is generated between the cover member and the door connecting frame member, the cover member is fitted into the door connecting frame member, and the first door and the first door It is provision of the rotation folding door of the structure which does not remove | deviate from the door connection frame member of 2 doors.

In addition, another problem to be solved by the present invention is that the pair of gears has a foldable connecting member that has a highly secure foldable connecting member that prevents a child from pinching a hand or a toe. It is a door offer.

In order to solve the above-described problem, the invention according to claim 1 is a pair of gear members in which the first door and the second door are engaged with each other by fitting shaft holes into the two connecting shafts. The connecting member is foldably connected via a connecting member, and is configured to be rotatable about each connecting shaft, and a vertically long door connecting frame member is provided on the connecting side of the first door and the second door. A rotary folding door attached along a vertical side and fitted with a cover member having a semi-cylindrical outer peripheral surface on the outer side of the door connecting frame member, the door connecting frame member is A mounting groove portion to which a side surface positioned on the vertical side of the door on the connecting side is fitted and attached; and a pair of protrusions are provided along the vertical side symmetrically in the width direction on the back surface of the mounting groove portion; A rib is provided between the pair of ridges, and the tips of the ridges are folded and engaged. A groove-like hook receiving portion having a wall and an opening on the outside is formed along the vertical side, and the cover member is a semi-cylindrical shape having an opening on the inside, and both ends of the inner surface of the opening At the edge, a hook having a locking portion at the tip and projecting a predetermined length toward the center of the semi-cylinder is provided, and when the cover member and the door connecting frame member are engaged, the hook receiving portion The hook is fitted, the locking wall prevents the locking portion from coming off, the cover member is fixed substantially coaxially to the rib of the door connecting frame member, and the outer periphery of the semi-cylinder is wound. The rotary folding door is characterized by having an engagement structure that is integrally joined to the door connecting frame member in a state to maintain the engagement state.

The invention according to claim 2 is the rotary folding door according to claim 1, wherein the connecting member is attached with a gear cover provided with openings for receiving the pair of gears.

  The invention according to claim 3 is the rotary folding door according to claim 2, wherein the gear cover is provided with a slit for draining water.

According to a fourth aspect of the present invention, the tip of each protrusion is connected to the outside of the rib by forming a screw receiving portion having a screw fixing hole for the gear. The rotating folding door according to Item 1.

According to the rotary folding door of the present invention, each cover member of the first door and the second door, in the state in which the gap is fitted on the door connecting frame member is also generated between the door connecting frame member The door connecting frame member of the first door and the second door will not come off.

Further, according to the rotary folding door of the present invention, since the cover provided with the opening for receiving the pair of gears is attached to the connecting member , the child pinches the hand or toe between the pair of gears. There is nothing safe.

Further, according to the rotary folding door of the present invention, the engagement structure of the cover member and the door connecting frame member is provided on both side edges of the semicylindrical inner surface of the cover member and has a predetermined length toward the center of the semicylindrical shape. Since the hook is protruded and a hook receiving portion provided on the outer side surface of the door connecting frame member, the hook member is prevented from coming off when the hook is engaged with the hook receiving portion, and the cover member is a semi-cylinder. In the state where the outer periphery is wound, it is integrally joined to the door connecting frame member, and the engaged state can be maintained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an entire door facility provided with a rotary folding door in the present embodiment, FIG. 2 is an operation explanatory view of the rotary folding door in the embodiment of FIG. 1, and FIG. 3 (a) is an implementation of FIG. FIG. 3B is a bottom view of the cover, FIG. 3C is a schematic explanatory view with a part cut away for explaining a use state of the cover, FIG. 3 (d) is a cross-sectional view taken along line AA in FIG. 3 (a).

  In FIG. 1, the basic structure of the rotary folding door is that the rotary folding door 3 is a combination of a first door 5 and a second door 4, and the first door 5 and the second door 4 are: They are foldably connected on one side. The doors 4 and 5 are attached to the vertically long gate-type door frame 2.

  And by pushing the connection part of the 1st door 5 and the 2nd door 4, the 2nd door 4 rotates centering on the upper-lower end part on the opposite side to a connection part, and the 1st door 5 However, the first door 5 and the second door 4 are connected to the front side of the first door 5 and the second door 4 while being rotated at a predetermined position along a rail provided in the door frame body 2. The first door 5 is drawn toward the second door 4 while being folded together while projecting to the opposite side, so that the door is opened.

  The door frame body 2 includes left and right vertical frame bodies 8 and 8 and an upper frame body 9 having both ends fixed to and integrated with the left and right vertical frame bodies 8 and 8.

  As shown in FIG. 2, the vertical frame body 8 is formed in a structure in which a column member 8c is sandwiched between an elongated inner bent piece 8a and an outer bent piece 8b, and the inner bent piece 8a. Has a cross-sectional shape in which the front end in the width direction is slightly bent at a right angle inward, and the bottom surface is slightly recessed inward leaving a slight width on both sides. And the formed recessed part 8d is arrange | positioned so that it may face inward, The width direction of the 1st door 5 and the 2nd door 4, and an outer end surface are set to the recessed part 8d of these vertical frame bodies 8 and 8. Are partially accepted.

  A suspension rail member 10 is attached to the lower portion of the upper frame body 9. A rail 10a, 10a is formed on the inner surface of the lower portion of the suspension rail member 10 with a predetermined width on both sides in the width direction, and a suspension shaft 35 fixed to the upper surface of the first door 5 described later is a door frame. A long and narrow opening 10b is formed between the rails 10a and 10a so as to be able to travel in the lateral width direction of the body 2 between the rails 10a and 10a.

  Further, in the suspension rail member 10, the first door 5 is moved through the suspension shaft 35 when both doors 4 and 5 are closed near the end of the door frame 2 on the vertical frame body 8 side. An air damper 18 is attached to reduce the closing speed of the first door 5 when the tip 19a of the piston rod 19 comes into contact with a part of a four-wheel upper suspension wheel 36 to which a suspension shaft 35 is fixed as a body.

  The second door 4 has lateral reinforcement frames 4a and 4a each having an arc-shaped cutout 4b formed at one end on the upper and lower surfaces of the door member 11 constituting the main body, and the second door 4 has a second door on the right side. A semi-cylindrical long cover member 15 that houses a rotating shaft that rotatably supports 4 is attached, and a semi-cylindrical long cover member 50 is attached to the left side surface. The cover member 50 is attached to close (or narrow) a gap between the first door 5 and the first door 5 connected to the second door 4.

  Further, the first door 5 is fixed with lateral reinforcing frames 5a and 5a having arcuate cutouts 5b formed at one end on the upper and lower surfaces of the door member 12 constituting the main body, and the first door 5 has a first A semi-cylindrical long cover member 50 that closes (or narrows) the gap between the second door 4 and the second door 4 is attached, and the first door 5 is the door on the left side. A long cover member 16 having a semicircular cross section is attached to close (or narrow) a gap when the frame 2 is brought into contact with (or close to) the vertical frame 8. Bar magnets 17 are housed in the cover member 16 and in the vertical frame body 8 on the side abutting (or close to) the cover member 16, respectively, the rotary folding door 3 is closed, and the first door 5 is opened. When the frame 2 is brought into contact with the vertical frame 8, the state is maintained. The door member 11 forming the main body portion of the second door 4 and the door member 12 forming the main body portion of the first door 5 have an elongated rectangular flat plate shape. The door members 11 and 12 are made of metal or synthetic resin, but may be made of wood.

  Note that the second reinforcing door 4 is formed only by the door member 11 without fixing the horizontal reinforcing frames 4a and 4a to the upper and lower surfaces of the door member 11, and similarly, the upper and lower surfaces of the door member 12 are laterally reinforced. The 1st door 5 can also be formed only with the door member 12, without adhering frame 5a, 5a.

  A hinge 30 having a rotation axis in the vertical direction is embedded and attached to the upper right end portion of the door member 11 constituting the main body portion of the second door 4. Further, the upper part of the hinge 30 is fixed to the suspension rail member 10 of the door frame body 2 with a screw via a bracket 31.

  A cylindrical hinge 32 is embedded in the lower right end portion of the door member 11. A rotation shaft 33 is fitted in the cylinder of the hinge 32, and the door member 11 is rotatably supported by the rotation shaft 33. The rotary shaft 33 is implanted in a thrust bearing (not shown), and the thrust bearing is fixed on the horizontal bent portion of the L-shaped bracket 34 attached to the right vertical frame 8 of the door frame 2. . Therefore, the load of the second door 4 is received by the planting surface of the rotating shaft of the thrust bearing. Thereby, the second door 4 is rotatably supported by the right end portion of the door frame body 2.

  The door member 12 forming the main body of the first door 5 has a suspension rail member 10 whose upper surface is the door frame body 2 at a position near the center in the width direction, exactly at a position corresponding to the rotation radius of the second door 4. The upper and lower ends of the connecting portion with the second door 4 on the right side of the second door 4 are connected to and supported by the upper and lower ends of the left side of the second door 4 so as to be foldable. Thus, the door frame 2 is attached.

  The structure of the portion in which the upper surface of the first door 5 is rotatably suspended by the suspension rail member 10 of the door frame 2 is as follows. A suspension shaft 35 is fixedly attached to the upper surface of the door member 12 constituting the main body of the first door 5. The suspension shaft 35 passes through a bearing hole 38 formed in the center portion of the base plate 37 of the four-wheeled upper suspension wheel 36, and is supported so as to be prevented from being detached therefrom and rotatable. Therefore, the first door 5 is suspended by the upper suspension wheel 36 via the suspension shaft 35 and is supported by the bearing hole 38 of the upper suspension wheel 36 so as to be rotatable.

  Since the wheel 39 rotatably attached to the base plate 37 rolls on the rails 10a and 10a, the upper suspension wheel 36 can travel along the rails 10a and 10a. The travel range is that when the revolving door 3 is completely opened from the position near the tip 19a of the piston rod 19 when the revolving door 3 is in a closed state and the piston rod 19 is housed in the air damper 18. Up to a position near the right end of the upper frame body 9.

Next, the structure of a portion in which the upper right and lower ends of the first door 5 are connected to the upper left and lower ends of the second door 4 so as to be foldable with each other will be described. First, the connecting member 40 that connects the first door 5 and the second door 4 so as to be foldable will be described. In the connecting member 40, two connecting shafts 42, 42 protrude at a predetermined interval from one side of a flat connecting plate 41, and a pair of gear members (in the figure, teeth 45 are the same dimension) projecting from the connecting shafts 42, 42. (A spur gear formed along a semicircular portion is employed) 43, 43 shaft holes 43a are fitted so that the pair of gear members 43, 43 are rotatably supported and mesh with each other. It is configured. Each gear member 43 , 43 is provided with a pair of screw holes 43b, 43b with a shaft hole 43a interposed therebetween. The connecting plate 41 is provided with a pair of screw holes 41a and 41a for attaching a gear cover 46 described later.

  The left side surface located on the vertical side on the connection side of the door member 11 forming the main body portion of the second door 4 and the right side positioned on the vertical side on the connection side of the door member 12 forming the main body portion of the first door 5. On the side surfaces of the door members 11, 12, longitudinal metal door connecting frame members 20, 20 having the length of the longitudinal sides are attached along the longitudinal sides of the door members 11, 12.

Cover members 50 and 50 having a semi-cylindrical outer peripheral surface are fitted and stretched on the outer side portions of the door connecting frame members 20 and 20. Further, on the upper and lower end faces of the door connecting frame members 20 and 20 and the cover members 50 and 50, the connecting members 40 and 40 respectively connect the pair of gears 43 and 43 to the door connecting frame members 20 and 20 and the holes 43b. is attached by inserting a screw into 43b. In this way, the connecting members 40, 40 are fixed to the upper and lower end faces of the door connecting frame members 20, 20, so that the door members 11, 12 are connected via the door connecting frame members 20, 20 attached thereto. The right upper and lower ends of the first door 5 are connected to the left upper and lower ends of the second door 4 so that the first door 5 and the second door 4 can be folded together. .

  The connecting members 40, 40 are attached with box-shaped gear covers 46, 46 having an eyeglass-shaped appearance and an open top surface. An annular rib 48 a is formed on the bottom surface of the gear cover 46 so as to surround the periphery of the connecting plate 41 of the connecting member 40, and the inside of the annular rib 48 a is a storage portion 48 of the connecting plate 41. Further, an arc-shaped drain slit 47 is intermittently formed at the edge of the bottom surface of the gear cover 46. When the connecting plate 41 is stored in the storage portion 48, holes 49, 49 are formed at positions matching the screw fastening holes 41a, 41a provided in the connecting plate 41, and the connecting shaft 42, 42, holes 49a, 49a are formed at positions that coincide with each other. The gear cover 46 is attached to the connecting member 40 by fitting the connecting shafts 42 and 42 into these holes 49a and 49a and inserting screws into the holes 49 and 49 and screwing them to the connecting plate 41. Yes.

In this state, the joints between the gears 43 and 43 and the door connecting frame members 20 and 20 are in contact with the upper and lower end faces of the cover members 50 and 50, but the eyeglass-shaped gear covers 46 and 46 are A predetermined gap is provided between the upper and lower end faces of the cover members 50, 50, and when the first door 5 and the second door 4 are folded, the gear cover 46 is provided with the cover members 50, 50 and It arrange | positions so that the door members 11 and 12 may not be contacted.

  When the gear covers 46, 46 are attached to the connecting members 40, 40 and are fixed to the upper and lower end faces of the door connecting frame members 20, 20, the lateral reinforcing frame at the upper right lower end portion of the first door 5. An arcuate gap is formed between the arcuate cutout 5b at one end of 5a and the arcuate cutout 4b at one end of the horizontal reinforcing frame 4a at the upper left and lower ends of the second door 4; When the first door 5 and the second door 4 are folded, the first door 5 and the second door 4 are each of the arc-shaped cutouts 4b and 5b of the lateral reinforcing frames 4a and 5a. The gear cover 46 does not come into contact with the lateral reinforcing frames 4a and 5a because it rotates while maintaining an arc-shaped gap between the gear cover 46 and the shape of the gear cover 46.

  Next, Examples 1 to 3 of the joint structure between the door connecting frame member 20 and the cover member 50 will be described in more detail with reference to FIGS. 4 to 6. 4A is a schematic explanatory diagram of the door connecting frame member 20 and the cover member 50 according to the first embodiment, and FIG. 4B is an engagement of the door connecting frame member 20 and the cover member 50 according to the first embodiment. FIG. 5A is a schematic diagram of the structure, FIG. 5A is a schematic explanatory diagram of the door connecting frame member 20a and the cover member 50a of the second embodiment, and FIG. 5B is a door connecting frame member 20a and the cover of the second embodiment. FIG. 6 is a schematic explanatory diagram of the member 50a, and FIG.

  FIG. 4A shows the door connecting frame member 20 and the cover member 50 constituting the connecting portion of the first embodiment. The door connecting frame member 20 is formed of metal, resin, or the like, has a mounting groove portion 22 having a U-shaped cross section having an opening 21 on the outside, and the door member of the second door 4 in the opening 21. 11 (or the door member 12 of the first door 5) is fitted with a side surface located on the vertical side of the connecting side and attached to the door member 11 with screws. On the back surface of the opening 21 of the mounting groove 22, a ridge 23 having a low height is provided on the outer side in the width direction of the door connecting frame member 20, and a ridge 24 having a low height substantially the same as the ridge 23 is provided on the inner side. Further, the ridges 25 having a higher height are provided along the longitudinal side in parallel with each other in pairs in a symmetrical manner in the width direction at intervals.

On the back surface of the opening 21 located between the pair of protruding ridges 25, 25 having a high height, a groove portion 27 formed by a rib 26 having a C-shaped cross section is provided with an opening 28 on the outside. Yes. The ends of the pair of ridges 25, 25 are connected to the outside of the rib 26 by forming screw receiving portions 26 a, 26 a having a C-shaped cross section having a pair of screw holes 41 b, 41 b for attaching the gear 43. Has been. The ridge 25 extends ahead of the position of the screw receiving portion 26a, and its tip is folded back so as to face the ridge 24 having a low height with a gap therebetween. It has been. Thus, with a part of the high ridge 25 as a bottom surface, a groove-like shape in which the tip 25a folded back of the high ridge 25 and the low ridge 24 form a locking wall and has an opening 24a on the outside. The hook receiving portion 29 is elongated along the vertical side. In addition, the front-end | tip part of the protrusion 24 and the protrusion 25a is formed in the taper shape which spreads outward sharply.

  The cover member 50 is formed of a resilient material such as rubber or resin, has a substantially semi-cylindrical shape having an opening 51 on the inside, and has a thickness along the outer periphery inside the semi-cylinder. C-shaped reinforcing ribs 52 are formed. On the inner surface of the rib 52, protrusions 53 are provided on the end side, and protrusions 54 are provided inside the ribs 52 in pairs, symmetrically from the vicinity of the center at intervals. Further, hooks 55 and 55 having a T-shaped cross section having a locking portion 55a at the tip and projecting a predetermined length toward the center of the semi-cylinder are long at both end edges of the inner surface of the opening 51 of the cover member 50. It is provided on the scale. On the outer periphery of the semi-cylinder of the cover member 50, one engagement protrusion 57 having a circular arc shape that protrudes from the vicinity of the center and descends toward the edge side is provided along the longitudinal side, and is long when the door is closed. The engaging ridges 57, 57 are engaged, and the door is sealed.

  When the hooks 55, 55 of the cover member 50 are engaged with the hook receiving portions 29, 29 of the door connecting frame member 20, the inner surface of the C-shaped reinforcing rib 52 of the cover member 50 as shown in FIG. A pair of protrusions 53 and 53 provided on the outer surface of the C-shaped rib 26 of the door connecting frame member 20 are in contact with the outer peripheral surface of the door connecting frame member 20, and in this state, the pair of protrusions 54 and 54 are near the opening 28 of the rib 26. The hook 55 is fitted to the hook receiving portion 29, the position where the hook 55 can be inserted by the ridge 23 is restricted, and the locking wall and the locking wall made of the ridge 24 are also provided. 25a prevents the locking portion 55a from coming off, the cover member 50 is fixed substantially coaxially to the C-shaped rib 26, and the door is connected in a state where the outer circumference of the semi-cylindrical part is more than 180 degrees. The frame member 20 is integrally joined.

  FIG. 5A shows the connecting portion of the second embodiment. In the second embodiment, the shape of the hook receiving portion 60 of the door connecting frame member 20a, the shape of the hook 56 of the cover member 50a, and the shape of one protrusion 57a provided on the outer periphery of the semi-cylindrical are the same as those of the first embodiment. The other structures are the same, though different.

Similarly to the door connecting frame member 20 of the first embodiment, the door connecting frame member 20a has a U-shaped mounting groove portion 22 having an opening 21 on the outside. Both edge portions of the mounting groove 22 are a pair of protrusions 61 and 61 extending to the back surface of the opening 21. Further, on the back surface of the opening 21 of the mounting groove portion 22, a groove portion 27 formed with a rib 26 having a C-shaped cross section is provided with an opening 28 on the outside. The pair of ridges 61, 61 are bent substantially at right angles to the center from the middle, and have a stepped portion 62 a on the end side of the bent portion 62, and the tip portion of the bent portion 62 is attached to the gear 43. A pair of screw receiving portions 63, 63 having a C-shaped cross section having a pair of screw fastening holes 41c, 41c are formed and connected to the rib 26. On the outer peripheral surface of the rib 26, a ridge 64 is provided so as to face in parallel with a space between the bent portion 62. This ridge 64 forms a groove together with the bent portion 62, and further, the tip end portion of the ridge 64 is bent from the middle toward the bent portion 62 at a substantially right angle, and a locking wall 65 is formed on the upper portion of the groove. A hook-shaped hook receiving portion 60 having an opening 66 on the outside is formed. The hook receiving portion 60 is formed long along the vertical side.

  The cover member 50a has a substantially semi-cylindrical shape having an opening 51 on the inside, and a C-shaped reinforcing rib 52 having a thickness along the outer periphery is formed inside the semi-cylindrical. On the inner surface of the C-shaped reinforcing rib 52, protrusions 53 are provided on the end side, and protrusions 54 are provided on the inner side thereof in pairs, symmetrically from the vicinity of the center at intervals. . Further, hooks 56, 56 having L-shaped cross sections each having a locking portion 56a at the tip and projecting a predetermined length toward the center of the semi-cylinder at both end edges of the inner surface of the opening 51 of the cover member 50a are It is provided along the length. On the outer periphery of the semi-cylinder of the cover member 50a, a single protrusion 57a having an acute cross section that protrudes from the vicinity of the center and descends toward the edge side is provided along the longitudinal side. The engaging protrusions 57a and 57a are engaged to seal the door.

  When the hooks 56, 56 of the cover member 50a are engaged with the hook receiving portions 60, 60 of the door connecting frame member 20a, as shown in FIG. 5B, the inner surface of the C-shaped reinforcing rib 52 of the cover member 50a. A pair of protrusions 53, 53 provided on the outer surface of the C-shaped rib 26 of the door connecting frame member 20 a abut on the outer peripheral surface of the door connecting frame member 20 a, and in this state, the pair of protrusions 54, 54 are near the opening 28 of the rib 26. The hook 56 is fitted into the hook receiving portion 60, the position at which the hook 56 can be inserted is regulated by the step portion 62a, and the locking portion 65 prevents the locking portion 56a from coming off. The cover member 50a is fixed substantially coaxially to the C-shaped rib 26, and is integrally joined to the door connecting frame member 20a in a state where the outer periphery of the semi-cylinder is wound up to a range of 180 degrees.

  FIG. 6 shows a connecting portion of the third embodiment. In FIG. 6, on the outer periphery of the semi-cylinder of the cover member 50b, one plate-like protrusion 57b having a plate shape projecting a predetermined length from the vicinity of the center is provided along the vertical side. In the third embodiment, the shape of the engaging protrusion 57b is different from that of the second embodiment.

As described above, according to the rotary folding door of the present invention, when the cover member and the door connecting frame member are engaged, the hook is fitted to the hook receiving portion, and the locking portion is formed by the locking wall. The cover member is fixed substantially coaxially to the rib of the door connecting frame member, and is integrally joined to the door connecting frame member with the outer periphery of the semi-cylinder wound around, Since it has the engagement structure that maintains the combined state, each cover member of the first door and the second door is fitted in the door connecting frame member even if a gap is formed between the door connecting frame member Then, it does not come off from the frame member for door connection.

  The cover members 50, 50a, and 50b are joined together with the outer circumference of the semi-cylinder wound around the door connecting frame member 20 within a range of 180 degrees inside and outside. Even if it is pinched, there is a cushioning effect and consideration is given to safety. In particular, the cover member 50 according to the first embodiment is integrally joined with the outer periphery of the semi-cylinder around the door connecting frame member 20 in a state where the range greatly exceeding 180 degrees is wound. Is high.

Moreover, since the gear cover provided with the opening which receives a pair of gears is attached to the connection member , a child does not pinch a hand or a toe between a pair of gears , and it is safe.

It is a front view of the whole door installation provided with the rotation folding door in this embodiment. It is effect | action explanatory drawing of the rotation folding door in embodiment of FIG. (A) is a plan view of the gear cover of the connecting member in the embodiment of FIG. 1, (b) is a bottom view of the gear cover, and (c) is a part for explaining the use state of the gear cover. FIG. 3D is a schematic explanatory view in which is cut away, and FIG. 3D is a cross-sectional view taken along line AA in FIG. (A) is schematic explanatory drawing of the door connection frame member 20 and the cover member 50 of Example 1, (b) is schematic drawing of the engagement structure of the door connection frame member 20 and the cover member 50 of Example 1. It is. (A) is schematic explanatory drawing of the frame member 20a for door connection of Example 2, and the cover member 50a, (b) is schematic explanatory drawing of the frame member 20a for door connection of Example 2, and the cover member 50a. 6 is a schematic explanatory diagram of Example 3. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Door frame 3 Rotating folding door 4 2nd door 4a, 5a Lateral reinforcement frame 5 1st door 8 Vertical frame 8a Inner bending piece 8b Outer bending piece 8c Column member 8d Recessed part 9 Upper frame body 10 Suspension rail Member 10a Rail 11, 12 Door member 15, 16, 50, 50a Cover member 17 Bar magnet 20, 20a Door connecting frame member 21, 24a, 28, 51, 66 Opening 22 Mounting groove 23, 24, 25, 53, 54 , 61, 64 Projection 25a, 65 Locking wall 26 Rib 26a, 63 Screw receiver 27 Groove 29, 60 Hook receiver 30, 32 Hinge 31 Bracket 33 Rotating shaft 34 L-shaped bracket 35 Suspension shaft 36 Top suspension 37 plate 38 bearing hole 39 a wheel 40 connecting member 41 connecting plate 41a, 41b, 41c, 43b, 49 hole 42 connecting shaft 43 gear 43a axial hole 45 teeth 46 gear Ca Over 47 slit 48 accommodating portion 48a annular rib 52 reinforcing ribs 55 and 56 hook 55a, 56a engaging portion 57 and 57a, the engaging protrusion 62 bent portion 62a stepped portion

Claims (4)

The first door and the second door are foldably connected to each other via a connecting member having a pair of gear members in which shaft holes are fitted to the two connecting shafts and mesh with each other. A vertically long door connecting frame member is configured to be rotatable about each connecting shaft, and is attached along the vertical side of the connecting side of the first door and the second door, and the outside of the door connecting frame member. In a rotary folding door in which a cover member having a semi-cylindrical outer peripheral surface is fitted and stretched,
The door connecting frame member has a mounting groove portion to which a side surface positioned on the vertical side of the connecting side of the door is fitted and attached, and a pair of protrusions are symmetrically arranged in the width direction on the back surface of the mounting groove portion. A groove-shaped hook receiver that is provided along the vertical side and that is provided with ribs between the pair of protrusions, and that the ends of the protrusions are folded back to form locking walls and have openings on the outside. The part is formed along the vertical side,
The cover member has a semi-cylindrical shape having an opening on the inner side, and hooks having a locking portion at the tip and projecting a predetermined length toward the center of the semi-cylinder are provided at both ends of the inner surface of the opening. Being
When the cover member and the door connecting frame member are engaged, the hook is fitted to the hook receiving portion, the locking portion is prevented from being detached by the locking wall, and the cover member is used for the door connecting It is fixed substantially coaxially to the rib of the frame member, and has an engagement structure that is integrally joined to the door connecting frame member in a state where the outer periphery of the semi-cylinder is wound, and maintains the engagement state. Rotating folding door. The rotary folding door according to claim 1 , wherein a gear cover provided with an opening for receiving the pair of gears is attached to the connecting member .   The rotary folding door according to claim 2, wherein the gear cover is provided with a slit for draining water. The rotary folding door according to claim 1, wherein the tip of each protrusion is connected to the outside of the rib by forming a screw receiving portion having a screw fixing hole for the gear .

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