JP2013234469A - Opening/closing device for folding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing device for a folding door in which, even when an impulsive force is loaded to the folding door, the folding door can be prevented from getting out of place.SOLUTION: Pivot hinges 20, 30 are mounted to upper and lower tail-side portions of one door body 11a of a folding door 10, and a pivot shaft 22 of the upper pivot hinge 20 is inserted into a support hole 53 of an upper holder 50 which is fixed to an upper side of an opening 1, and supported in a freely rotatable manner. A round shaft part 32b in a lower end of an adjust bolt 32 of the lower pivot hinge 30 is inserted into a support hole 63 of a lower holder 60 which is fixed to a lower side of the opening 1, and supported in a freely rotatable manner. A hook piece part 81 is provided in a pivotable end portion of a pivotable engagement plate 80 which is supported by the upper holder 50, the hook piece part 81 is engaged into an engagement groove 22c which is formed in the outer periphery of an upper end portion of the pivot shaft 22, and the pivot shaft 22 is prevented from being dropped downward out of the support hole 53, thereby preventing the folding door 10 from getting out of place.

Description

  The present invention relates to a folding door opening and closing device configured to open and close an opening such as an opening of a closet by a folding door.

  In a folding door that opens and closes an opening such as a doorway of a building or an opening of a closet, two door bodies are connected by a hinge so as to be foldable. In the opening / closing device using the folding door, a pivot hinge is attached to each of the upper and lower parts on one side of one door body forming the folding door, and the door body is rotatably supported, and the upper and lower parts on the other side of the other door body. A guide roller is provided on each of the doors, the guide rollers can roll along a rail provided above and below the opening, and the folding door is folded by an operation of pulling a handle attached to the surface of the other door body. Is open.

  Here, as the upper pivot hinge that rotatably supports the upper part of one door body in the folding door, the lower end portion of the pivot shaft is slidably inserted into the cylindrical body having the bottom, and the pivot shaft is inserted into the cylindrical body. It is urged upward by a spring incorporated in the shaft, and a flange provided at the lower end of the pivot shaft is brought into contact with a step formed on the inner periphery of the opening of the cylinder so as to prevent the pivot shaft from being removed. What has been known is conventionally known.

  On the other hand, as the lower pivot hinge that rotatably supports the lower part of one door body in the folding door, the adjustment bolt is inserted into the square hole of the adjustment bolt into the square hole of the cylindrical body having the bottom. In the prior art, a nut is screwed and a nut is screw-engaged with the adjustment bolt, and the position of the adjustment bolt can be adjusted vertically by rotation of the nut.

  In the folding of the folding door using the upper pivot hinge and the lower pivot hinge as described above, a cylinder of the upper pivot hinge is embedded in one side of the upper surface of one door body, and the lower pivot is mounted on one side of the lower surface. The cylindrical body of the hinge is embedded, the pivot shaft of the upper pivot hinge is inserted into the support hole of the upper receiver fixed to the upper side of the opening, and the round shaft provided at the other end of the adjustment bolt of the lower pivot hinge The part is inserted into a support hole of a lower receiving member fixed to the lower part of the opening so as to rotatably support one of the door bodies.

  In the folding door opening and closing device, since it is a support that simply inserts the round shaft portion of the adjustment bolt in the lower pivot hinge into the support hole of the receiving fixture fixed to the lower side portion of the opening portion, When the impact force toward the load is applied, when the door body is raised, the adjustment bolt rises together with the door body, the round shaft portion comes out of the support hole, and the door body may fall down.

  In order to solve such a problem, the present applicant forms an engagement groove in a portion located outside from the support hole of the round shaft portion of the adjustment bolt, and engages the engagement bolt provided on the upper surface side of the lower support. Patent Document 1 has already proposed a folding door opening and closing device in which the engaging portion of the plywood is engaged with the engaging groove to prevent the round shaft portion from coming out of the support hole.

JP 2010-116667 A

  By the way, in the folding door opening and closing device described in Patent Document 1, it is possible to reliably prevent the round shaft portion of the adjusting bolt from coming out of the support hole of the lower receiving member, but the door body moves in the vertical direction. Therefore, when the door body is lowered, the pivot shaft of the upper pivot hinge is lowered together with the door body, and the upper end is pulled out from the support hole of the upper receiving member, and the door body may fall down.

  An object of the present invention is to prevent the pivot shaft of the upper pivot hinge from falling out of the support hole of the upper receiving member and falling down the folding door.

  In order to solve the above-described problems, in the present invention, pivot hinges are fixed to the upper part of the door bottom side and the lower part of the door bottom side of one door body of the folding door composed of two door bodies connected in a foldable manner. The upper pivot hinge includes a cylinder embedded in the door body, a pivot shaft in which a lower end portion is slidably inserted into the cylinder, and a spring that imparts outward protrusion to the pivot shaft. The lower pivot hinge has a cylindrical body embedded in the door body and a square shaft part inserted into a square hole formed in the cylindrical body at one end part, and a round shaft part at the other end part. An upper bolt that is formed of an adjustment bolt formed and a nut that is screw-engaged with the adjustment bolt, and is fixed to an upper portion of an opening that is opened and closed by the folding door at the upper end of the pivot shaft of the upper pivot hinge. Support hole Inserted and supported rotatably, the round shaft portion of the adjusting bolt in the lower pivot hinge is inserted into the support hole of the lower receiving member fixed to the lower side portion of the opening portion, and is rotatably supported. In the folding door opening and closing device provided with a guide roller which is fixed to the upper side of the opening in the width direction of the opening, and provided with a guide roller that can roll along the rail on the top of the other door body of the folding door. An engagement groove is formed on the outer periphery of the upper end portion located outside the support hole of the pivot shaft, and an engagement portion that can be engaged with the engagement groove is provided at the tip on the lower surface side of the upper receiving member. A configuration in which the engagement plate is provided so as to be freely engageable and disengageable with respect to the engagement groove is employed.

  In the folding door opening and closing device having the above-described configuration, when installing the folding door, first, the distal end portion of the pivot shaft of the upper pivot hinge is inserted into the support hole of the support fixed to the upper side of the opening, and the guide roller Is inserted into the rail. Then, after pulling up the folding door and placing the round shaft portion of the adjustment bolt in the lower pivot hinge on the support hole of the receiving fixture fixed to the lower side of the opening, the folding door is lowered and the round shank portion of the lower receiving fixture is placed. The engagement portion of the engagement plate is engaged with the engagement groove of the pivot shaft while the circular shaft portion is inserted into the support hole and is supported by the support hole of the lower receiving member.

  As described above, by engaging the engaging portion of the engaging plate with the engaging groove of the pivot shaft, it is possible to prevent the pivot shaft from being lowered together with the folding door when the folding door is lowered. For this reason, the upper end portion of the pivot shaft does not come out of the support hole, and the folding door can be prevented from falling down.

  Here, the engagement plate is supported so as to be swingable around one end portion, and a hook piece portion as an engagement portion is provided at the swing side end portion, and this hook piece portion is engaged with and disengaged from the engagement groove. Alternatively, it may be slidably supported with respect to a support hole formed in the support, and a bifurcated piece portion as an engagement portion is formed at an end portion of the engagement plate facing the support hole, The bifurcated piece may be engaged with or disengaged from the engaging groove.

  In the folding door opening and closing device according to the present invention, an engagement groove is formed in a portion located outside from the support hole of the lower receiving member of the round shaft portion of the adjustment bolt, and the engagement is formed on the upper surface side of the lower receiving member. When an engagement plate having an engagement portion engageable with the groove at the tip is provided so as to be engageable and disengageable with respect to the engagement groove, the engagement portion of the engagement plate becomes the engagement groove of the round shaft portion. By engaging with, the round shaft portion can be prevented from coming out upward from the support hole, and the folding door can be completely prevented from falling down.

  In the present invention, as described above, the engaging portion of the engaging plate is placed on the outer periphery of the upper end portion of the pivot shaft in the folded state of the folding door in which the pivot shaft is inserted into the support hole of the upper receiving member fixed above the opening. Since the pivot shaft can be prevented from coming out downward from the support hole of the upper receiving member by being engaged with the engaging groove formed in the above, the folding door can be prevented from falling down.

Partially cutaway front view showing an embodiment of a folding door opening and closing device according to the present invention The partially cutaway front view which expands and shows the upper part of the door butt side of the folding door of FIG. Sectional view along line III-III in FIG. Sectional view along line IV-IV in FIG. Sectional drawing which expands and shows a part of FIG. The partially cutaway front view which expands and shows the lower part of the door butt side of the folding door of FIG. Sectional drawing along the VII-VII line of FIG. Sectional view along line VIII-VIII in FIG. Partially cutaway front view showing another embodiment of the folding door opening and closing device according to the present invention Sectional view along line XX in FIG. Vertical side view showing another example of rail

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a folding door opening and closing device that opens and closes the opening 1 of the closet A with the folding door 10, but the opening 1 is not limited to the closet A. For example, it may be an entrance of a building.

  As shown in FIG. 1, a rail 2 is embedded in the upper portion of the opening 1. The rail 2 has a length extending in the width direction of the opening 1. As shown in FIGS. 2 and 4, the rail 2 has a guide groove 3, and a pair of opposed guide protrusions 4 extending in the length direction of the rail 2 are provided in the opening of the guide groove 3. The rail 2 is attached with the opening of the guide groove 3 facing downward.

  As shown in FIG. 1, a folding door 10 is provided inside the opening 1. The folding door 10 has two door bodies 11a and 11b, and the two door bodies 11a and 11b are connected to each other by a plurality of hinges 12 so as to be foldable.

  An upper vertical hole 13 extending downward from the upper surface of the door body 11a and a lower vertical hole 14 extending upward from the lower surface are formed on the door bottom side of one door body 11a in the folding door 10.

  The upper vertical hole 13 and the lower vertical hole 14 are arranged coaxially, and the upper pivot hinge 20 is attached to the upper vertical hole 13, and the lower pivot hinge 30 is attached to the lower vertical hole 14.

  On the other hand, a support hole 15 extending downward from the upper surface is formed on the door end side of the other door body 11b, and an end portion of the roller shaft 41 is slidable in a roller support cylinder 40 incorporated in the support hole 15. Has been inserted.

  The roller shaft 41 is urged outward by a spring (not shown) incorporated in the roller support cylinder 40, and extends along the guide groove 3 of the rail 2 from the roller support cylinder 40 to the distal end located outside. A guide roller 42 with a hook that can be rotated is supported rotatably.

  As shown in FIG. 2, the upper pivot hinge 20 includes a cylindrical body 21 with a bottom, a pivot shaft 22 including a round shaft in which a rear end portion is slidably inserted into the cylindrical body 21, and the cylindrical body 21. It consists of a spring 23 built in.

  The pivot shaft 22 is urged outward by the pressure of the spring 23, a flange 22 a is formed at the lower end located inside the cylinder 21, and the outer periphery of the upper end located outside the cylinder 21 is engaged. A joint groove 22c is provided.

  On the other hand, a step portion 25 is provided in the open end portion of the cylindrical body 21 by press-fitting the collar 24, and the pivot shaft 22 is prevented from being pulled out by abutment of the flange 22 a against the step portion 25.

  The upper pivot hinge 20 having the above-described configuration is attached to press-fit the cylindrical body 21 into the upper vertical hole 13 formed on the upper surface of one door body 11a. The upper end portion of the pivot shaft 22 in the upper pivot hinge 20 is rotatably supported by an upper support 50 attached to the upper rail 2 of the opening 1.

  As shown in FIGS. 2 to 5, the upper receiving member 50 is fitted between the opposing pair of guide protrusions 4 at both ends of a flat plate 51 whose both sides on one side are supported by the opposing pair of guide protrusions 4. A pair of bent pieces 52 are provided, and a support hole 53 that supports the upper end portion of the pivot shaft 22 is formed between the bent pieces 52.

  Further, the upper receiving member 50 is fixed to the rail 2 by tightening a bolt 56 that is screw-engaged with a screw hole 55 of a nut plate 54 that sandwiches the pair of opposed guide protrusions 4 with the flat plate 51 from above and below.

  An engagement plate 80 is provided on the lower surface side of the upper receiving member 50. The engaging plate 80 is supported so as to be swingable about the bolt 56, and a hook piece 81 serving as an engaging portion is provided at an end of the swinging side. The hook piece portion 81 can be engaged with an engagement groove 22c formed on the outer periphery of the upper end portion of the pivot shaft 22, and the engagement prevents the upper end portion of the pivot shaft 22 from coming out of the support hole 53. .

  As shown in FIG. 6, the lower pivot hinge 30 includes a cylindrical body 31 having a closed end, an adjustment bolt 32, and a nut 33. The cylindrical body 31 is formed with a flange 31a at the open end, and is press-fitted into the lower vertical hole 14 with the closed end as a tip.

  The adjustment bolt 32 has a square shaft portion 32a at one end, a round shaft portion 32b is provided at the other end, and a circumferential engagement groove 32c is formed at the base portion of the round shaft portion 32b. The adjustment bolt 32 is assembled by inserting the square shaft portion 32a into the square hole 31b formed in the cylindrical body 31, and the adjustment bolt 32 is attached to the cylindrical body 31 by fitting the square hole 31b and the square shaft portion 32a. On the other hand, it is prevented from rotating.

  The nut 33 is screw-engaged with the adjustment bolt 32 and comes into contact with the flange 31a of the cylindrical body 31. When the nut 33 is rotated, the nut 33 and the adjustment bolt 32 are relatively moved in the axial direction.

  The round shaft portion 32b of the adjusting bolt 32 in the lower pivot hinge 30 is rotatably supported by a lower receiving tool 60 provided below the adjusting shaft 32.

  As shown in FIGS. 6 to 8, the lower support 60 is attached to a pedestal 70 fixed to the floor surface W. Here, the pedestal 70 has a box shape in which a downward peripheral wall 72 is provided on the outer periphery of a rectangular support plate 71, and a mounting plate 73 is formed outwardly on the lower end of one side wall of the peripheral wall 72. Is fixed by tightening a screw 74 screwed into the floor surface. The support plate 71 is formed with a long hole 75 extending long in the width direction of the opening 1.

  The lower support 60 is provided with a pair of bent pieces 62 fitted into the long holes 75 at both ends of the flat plate 61 supported by the upper surface of the support plate 71 of the pedestal 70, and between the bent pieces 62. A support hole 63 for supporting the round shaft portion 32b is formed.

  Further, the lower receiving tool 60 is fixed to the support plate 71 by tightening bolts 66 that are screw-engaged with the screw holes 65 of the nut plate 64 that sandwich the both sides of the long hole 75 with the flat plate 61 from above and below.

  An engagement plate 85 is provided on the upper surface side of the lower receiving tool 60. The engagement plate 85 is swingably supported around the bolt 66, and a hook piece 86 as an engagement portion is provided at the end of the swing side. The hook piece 86 can be engaged with an engaging groove 32c formed in the round shaft portion 32b, and the engagement prevents the round shaft portion 32b from coming out of the support hole 63.

  As shown in FIG. 1, in a state where the folding door 10 closes the opening 1, the floor W is attracted by a magnetic metal plate at a position facing the door end side end of the other door body 11 b of the folding door 10. The plate 90 is fixed. On the other hand, a permanent magnet 91 is attached to the door end side end portion of the door body 11b, and the door magnet side end portion of the door body 11b is prevented from shaking by the action of the permanent magnet 91 adsorbing the suction plate 90. It has become.

  The folding door opening and closing device shown in the embodiment has the above-described structure. When the folding door 10 is attached, first, the upper receiving member 50 in which the tip end of the pivot shaft 22 of the upper pivot hinge 20 is fixed to the upper side of the opening 1. The guide roller 42 is inserted into the guide groove 3 of the rail 2. In that state, after the folding door 10 is pulled up and the round shaft portion 32b of the adjusting bolt 32 in the lower pivot hinge 30 is disposed on the support hole 63 of the lower receiving member 60 fixed to the lower side of the opening 1, the folding door 10 , And the round shaft portion 32b is inserted into the support hole 63 of the lower support 60 to support the round shaft portion 32b rotatably.

  When the folding door 10 is suspended as described above, the nut 33 is moved upward by the rotation of the nut 33. At this time, the folding door 10 also moves together with the nut 33, and the upward movement of the folding door 10 causes the pivot shaft 22 of the upper pivot hinge 20 to be immersed in the cylindrical body 21 to increase the elastic force of the spring 23. The folding door 10 is suspended and adjusted so that the upper end of the door does not come out of the support hole 53.

  After adjusting the folding of the folding door 10, the engagement plate 80 is swung from the disengagement position indicated by the chain line in FIG. 3 toward the pivot shaft 22, and the hook piece 81 provided at the end on the swing side is moved. The engaging plate 85 is engaged with the engaging groove 22c formed at the upper end portion of the pivot shaft 22, and the engaging plate 85 is swung from the disengagement position shown by the chain line in FIG. 7 toward the round shaft portion 32b of the adjusting bolt 32. The hook piece 86 provided at the end on the swing side is engaged with the engagement groove 32c formed in the round shaft portion 32b.

  As described above, by engaging the hook piece portion 81 of the engagement plate 80 with the engagement groove 22 c formed in the pivot shaft 22, the upper end portion of the pivot shaft 22 is lowered from the support hole 53 of the upper support 50. Is prevented from coming out. Further, by engaging the hook piece portion 86 of the engagement plate 85 with the engagement groove 32c formed in the round shaft portion 32b of the adjusting bolt 32, the round shaft portion 32b is prevented from coming out of the support hole 63 upward. Will be.

  For this reason, even if an impact force is applied to the folding door 10 and it moves in the vertical direction, the pivot shaft 22 and the adjusting bolt 32 hold the state of being inserted into the support holes 53 and 63 and the folding door 10 falls down. There is no.

  3 and 7, the engagement plates 80 and 85 are supported so as to be swingable, and the hook pieces 81 and 86 provided at the swing side end portions are engaged with the engagement grooves 22c and 32c. The pivot shaft 22 and the round shaft portion 32b are prevented from being pulled out, but the engagement plate is slidably supported toward the pivot shaft or the round shaft portion, and the end of the engagement plate facing the pivot shaft or the round shaft portion. A bifurcated piece may be formed in the portion, and the bifurcated piece may be engaged with the engaging groove to prevent the pivot shaft or the round shaft portion from being removed.

  In FIG. 1, the pedestal 70 is fixed to the floor surface W, and the lower support 60 is supported by the pedestal 70, but as shown in FIGS. 9 and 10, the width of the opening 1 on the floor surface W. The rail 5 extending in the direction may be attached, and the lower receiving tool 60 may be fixed to the upper portion of the rail 5. Here, the rail 5 has the same shape as the rail 2 fixed above the opening 1.

  Moreover, although the door end side end of the folding door 10 was steady by adsorption | suction with the permanent magnet 91 attached to the door end side edge of the folding door 10, and the adsorption | suction board 90 attached to the floor W, the door tip side of the folding door 10 was carried out. A rotatable guide roller 43 may be provided at the end, and the guide roller 43 may be inserted into the guide groove of the rail 5 to prevent the end of the folding door 10 from swinging.

  In FIG. 9, embedded type rails are used as the rails 2 and 5, but imposition type rails 2 and 5 may be used as shown in FIG. 11.

DESCRIPTION OF SYMBOLS 1 Opening part 2 Rail 10 Folding door 11a Door body 11b Door body 20 Upper pivot hinge 21 Cylindrical body 22 Pivot shaft 22c Engaging groove 23 Spring 30 Lower pivot hinge 31 Cylindrical body 31b Square hole 32 Adjustment bolt 32a Square shaft part 32b Round shaft part 32c engagement groove 33 nut 42 guide roller 50 support 53 support hole 60 support 63 support hole 80 engagement plate 81 hook piece (engagement part)
85 Engagement plate 86 Hook piece (engagement part)

Claims (3)

A pivot hinge is fixed to each of the upper part of the door bottom side and the lower part of the door bottom side of one of the folding doors that are foldably connected to each other, and the upper pivot hinge is embedded in the door body. It consists of a cylindrical body, a pivot shaft whose lower end is slidably inserted into the cylindrical body, and a spring that imparts outward protrusion to the pivot shaft, and the lower pivot hinge is embedded in the door body A cylinder body, an adjustment bolt having one end portion with a square shaft portion inserted into a square hole formed in the cylinder body, and a round shaft portion formed at the other end, and a screw engagement with the adjustment bolt The upper pivot hinge is inserted into a support hole of an upper support fixed to an upper portion of an opening that is opened and closed by the folding door, and is rotatably supported by the lower pivot. On the hinge A round shaft portion of the adjusting bolt is inserted into a support hole of a lower receiving member fixed to the lower side portion of the opening portion and is rotatably supported, and a rail extending in the width direction of the opening portion is provided above the opening portion. In the folding door opening and closing device provided with a guide roller that can roll along the rail on the top side of the other door body of the folding door.
An engagement groove is formed on the outer periphery of the upper end portion located outside from the support hole of the pivot shaft, and an engagement portion engageable with the engagement groove is formed on the lower surface side of the upper receiving member. An opening / closing device for a folding door, wherein an engaging plate is provided so as to be freely engageable and disengageable with respect to the engaging groove.   The folding door opening and closing device according to claim 1, wherein the engagement plate is a swingable support, and a hook piece provided at an end of the swing side is used as the engagement portion.   An engagement groove is formed in a portion of the adjustment bolt that is positioned outside the support hole of the round shaft portion, and an engagement portion that can be engaged with the engagement groove is formed on the upper surface side of the lower receiving tool. The opening / closing device for a folding door according to claim 1 or 2, wherein an engagement plate provided at a tip is provided so as to be freely engageable and disengageable with respect to the engagement groove.

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