JP2010116668A - Upper pivot hinge for folding door, and device for opening/closing folding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an upper pivot hinge for a folding door, which can facilitate a hanging adjustment of the folding door. <P>SOLUTION: An end of a pivot shaft 22 is slidably inserted into a tubular body 21 which is embedded in the door tail side of one door body 11a of the folding door 10. The pivot shaft 22 is pressed by a spring 23 which is incorporated in the tubular body 21, and a flange 22a provided at the lower end of the pivot shaft 22 abuts on a step portion 25 provided on the inner periphery of the opening end of the tubular body 21, so as to prevent the pivot shaft 22 from coming off. An indication portion 26 for specifying the push-in amount of the pivot shaft 22 is provided on an outer periphery which is positioned outside the tubular body 21 of the pivot shaft 22. Thus, when the hanging adjustment of the folding door 10 is performed, it is facilitated by moving the door tail side of the folding door 10 upward until the indication portion 26 agrees with an upper end surface of the tubular body 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an upper pivot hinge for a folding door and a folding door opening and closing device using the upper pivot hinge.

  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. Is urged outward 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 cylindrical body to prevent the pivot shaft from being removed. What was made is known conventionally.

  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 screw-engaged with the adjusting bolt, a nut is screw-engaged with the adjusting bolt, and the adjusting bolt and the cylinder can be adjusted in the vertical direction by rotating 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. Embed the cylinder of the hinge, insert the pivot shaft of the upper pivot hinge into the support hole of the receiving fixture fixed to the upper part of the opening, and use the round shaft provided at the other end of the adjustment bolt of the lower pivot hinge One door body is rotatably supported by being inserted into a support hole of a receiver fixed to the lower side of the opening.

  Here, when the suspension is simply inserted into the support hole of the receiving tool for the pivot shaft of the upper pivot hinge, the elastic force of the spring that biases the pivot shaft outward is weak, and the impact force is exerted on one door body. When a load is applied, there is a risk that the tip of the pivot shaft may come out of the support hole.

  For this reason, after the folding door is suspended, the folding door is moved upward by the rotation of the nut threadedly engaged with the lower adjustment bolt, and the pivot shaft is immersed inside the cylinder body by the relative movement of the folding door and the pivot shaft. Adjustment to increase the elastic force of the spring, so-called suspension adjustment is performed.

  By the way, in the folding adjustment of the folding door, conventionally, the distance between the rail mounted on the upper surface of one door body and the upper portion of the opening is measured with a ruler while rotating the nut. It was very troublesome.

  An object of the present invention is to facilitate the folding adjustment of the folding door.

  In order to solve the above-mentioned problems, in the upper pivot hinge for a folding door according to the present invention, a bottomed cylinder embedded in the upper part of the door bottom of the folding door, and a lower end portion slidable in the cylinder. The inserted pivot shaft and a spring that is incorporated in the cylindrical body and biases the pivot shaft in a direction protruding from the cylindrical body, and a flange is provided at a lower end portion located in the cylindrical body of the pivot shaft, In the upper pivot hinge for a folding door in which a step portion is provided on the inner periphery of the opening end portion of the cylindrical body and the pivot shaft is prevented from being pulled out by contact of the flange with the step portion, the portion of the pivot shaft located outside the cylindrical body A configuration is adopted in which a display portion is provided on the outer periphery to define the amount of pushing of the pivot shaft when the folding door is suspended and adjusted.

  In the folding door opening and closing device according to the present invention, the pivot hinge is fixed to each of the door bottom side upper part and the door bottom side lower part of one door body of the folding door composed of two door bodies foldably connected. 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 body, 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, and a round shaft part formed at the other end. And a support hole for a receiving fixture fixed to the upper part of the opening that is opened and closed by the folding door at the upper end of the pivot shaft in the upper pivot hinge. Inserted into It is rotatably supported by inserting the round shaft portion of the adjustment bolt in the lower pivot hinge into the support hole of the receiver fixed to the lower side portion of the opening portion, and rotatably supporting the upper side of the opening portion. In the folding door opening and closing device, the rail of the opening is fixed, and a guide roller that can roll along the rail is provided on the upper side of the other door body of the folding door. A configuration is adopted in which a display portion is provided on the outer periphery of the portion located outside the body to define the amount by which the pivot shaft is pushed when the folding door is suspended and adjusted.

  In the folding door opening and closing device having the above-described configuration, when adjusting the folding of the folding door, by rotating the nut of the lower pivot hinge, the nut is moved upward to lift one door body, the one door body and the upper part At the position where the pivot shaft is immersed inside the cylinder by relative movement of the pivot axis of the pivot hinge, and the display portion provided on the outer periphery of the pivot axis coincides with the upper end surface of the cylinder, or the position where the display section is immersed inside Stop rotating the nut.

  As described above, one door body is lifted by rotating the nut, and the pivot shaft is moved to a position where the display portion formed on the pivot shaft of the upper pivot hinge coincides with the upper end surface of the cylinder body or a position where the display portion is immersed inside. By immersing the inside of the cylinder, the spring will compress and deform, and an appropriate elastic force will be obtained, and the laborious work of measuring the distance between the upper surface of one door and the upper rail with a ruler It can be unnecessary.

  As described above, in the present invention, the pivot shaft is directed toward the inside of the cylinder until the display portion formed on the outer periphery of the pivot shaft coincides with the upper end surface of the cylinder or the position where the display portion is immersed inside the cylinder. By pushing in, it is possible to obtain an appropriate elastic force for the spring that biases the pivot shaft outward, so that the folding adjustment of the folding door can be facilitated.

  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, rails 2 and 2 are embedded in the upper side and lower side of the opening 1. The rails 2 and 2 have a length extending in the width direction of the opening 1. As shown in FIGS. 2 and 3, 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, and the upper rail 2 is mounted with the opening of the guide groove 3 facing downward, while the lower rail 2 is mounted with the opening of the guide groove 3 facing upward.

  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 12 extending downward from the upper surface of the door body 11a and a lower vertical hole 13 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 12 and the lower vertical hole 13 are coaxially arranged, and the upper pivot hinge 20 is attached to the upper vertical hole 12, and the lower pivot hinge 30 is attached to the lower vertical hole 13.

  On the other hand, an upper support hole 14 extending downward from the upper surface and a lower support hole 15 extending upward from the lower surface are formed on the door end side of the other door body 11b.

  The upper support hole 14 and the lower support hole 15 are coaxially arranged, and the end portion of the roller shaft 41 is slidably inserted into a roller support cylinder 40 incorporated in each of the support holes 14 and 15.

  The roller shaft 41 is urged outward by a spring (not shown) incorporated in the roller support cylinder 40, and a hooked guide roller 42 is freely rotatable from the roller support cylinder 40 to the tip portion located outside. It is supported by.

  The guide roller 42 positioned on the upper side of the other door body 11b can roll along the guide groove 3 of the rail 2 provided on the upper side of the opening 1, and is positioned on the lower side of the door body 11b. The guide roller 42 can roll along the guide groove 3 of the rail 2 below the opening 1.

  As shown in FIG. 2, the upper pivot hinge 20 is assembled into the cylindrical body 21 with a bottom, a pivot shaft 22 having a rear end slidably inserted into the cylindrical body 21, and the cylindrical body 21. Spring 23.

  The pivot shaft 22 is urged outward by the pressing of the spring 23, a flange 22 a is formed at the lower end located inside the cylindrical body 21, and a small-diameter round shaft is formed at the distal end located outside the cylindrical body 21. 22b 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.

  As shown in FIG. 4, the upper pivot hinge 20 having the above-described configuration is attached so as to press-fit the cylindrical body 21 into the upper vertical hole 12 formed on the upper surface of one door body 11a. The flange 22 a of the pivot shaft 22 is pressed against the step portion 25 by the pressing of the spring 23.

  In the state where the pivot shaft 22 is prevented from being pulled out by the contact of the flange 22a with the step portion 25, the pushing amount of the pivot shaft 22 when the folding door 10 is suspended and adjusted on the outer periphery of the pivot shaft 22 located outside the cylindrical body 21. Is provided.

  Here, a line mark extending in the circumferential direction is shown as the display unit 26, but the display unit 26 is not limited to this. For example, it may be a triangle mark.

  As shown in FIG. 2, the lower pivot hinge 30 includes a cylindrical body 31 with a bottom, an adjustment bolt 32, and a nut 33. The cylindrical body 31 is formed with a flange 31a at the opening end, and is press-fitted into the lower vertical hole 13 with the bottom as a tip.

  The adjustment bolt 32 has a square shaft portion 32a at one end and a round shaft portion 32b at the other end. 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 22 b of the pivot shaft 22 in the upper pivot hinge 20 is rotatably supported by an upper support 50 attached to the rail 2 above the opening 1, while the round shaft portion of the adjustment bolt 32 in the lower pivot hinge 30. 32b is rotatably supported by a lower support 51 attached to the lower rail 2 of the opening 1.

  The upper receiver 50 is provided with a pair of bent pieces 53 fitted between the pair of opposed guide protrusions 4 at both ends of a flat plate 52 whose both sides on one side are supported by the pair of opposed guide protrusions 4. A support hole 54 for supporting the round shaft 22 b of the pivot shaft 22 is formed between the bent pieces 53.

  The upper receiver 50 is fixed to the rail 2 by tightening a bolt 57 that is screwed into a screw hole 56 of a nut plate 55 that sandwiches a pair of opposed guide protrusions 4 from above and below with a flat plate 52.

  The lower receiver 51 has the same configuration as the upper receiver 50, and the fixing method thereof is the same as the fixing method of the upper receiver 50. Therefore, the same components are denoted by the same reference numerals and description thereof is omitted. To do.

  The folding door opening and closing device shown in the embodiment has the above-described structure, and when the folding door is suspended, the support hole of the receiving tool 50 in which the tip of the pivot shaft 22 of the upper pivot hinge 20 is fixed to the upper side of the opening 1. 54, and the guide roller 42 at the upper end of the folding door 10 is inserted into the guide groove 3 of the rail 2 fixed to the upper side of the opening 1. In this state, the folding door 10 is pulled up, the round shaft portion 32b of the adjusting bolt 32 in the lower pivot hinge 30 is disposed on the support hole 54 of the receiving member 51 fixed to the lower side of the opening 1, and then the folding door 10 is lowered. The round shaft portion 32b is inserted into the support hole 54 of the lower support 51 to rotatably support the round shaft portion 32b, and the guide roller 42 at the lower end of the folding door 10 on the lower side of the opening 1. It is inserted into the guide groove 3 of the fixed rail 2.

  FIG. 1 shows a state in which the folding door 10 is suspended. In the suspended state, the pivot shaft 22 in the upper pivot hinge 20 is in a state in which the flange 22a abuts on the step portion 25 as shown in FIG. When the spring 23 is weak in elasticity and an impact force is applied to the folding door 10, there is a risk that the round shaft 22 b of the pivot shaft 22 comes out of the support hole 54 of the upper support 50 and the folding door 10 falls off.

  For this reason, after the folding door 10 is suspended, the folding door 10 is suspended and adjusted so that the elastic force of the spring 23 of the upper pivot hinge 20 becomes an appropriate elastic force.

  When adjusting the folding of the folding door 10, the nut 33 is moved upward along the adjustment bolt 32 by the rotation of the nut 33 of the lower pivot hinge 30, and the one door body 11 a is lifted by the nut 33, and the one door body 11a and the pivot shaft 22 of the upper pivot hinge 20 cause the pivot shaft 22 to be immersed in the cylindrical body 21, and the display portion 26 provided on the outer periphery of the pivot shaft 22 is, as shown in FIG. The rotation operation of the nut 33 is stopped at a position coinciding with the upper end surface of the cylindrical body 21 or a position where it is immersed inside.

  As described above, one door body 11a is lifted by rotating the nut 33, and the display portion 26 formed on the pivot shaft 22 of the upper pivot hinge 20 is aligned with the upper end surface of the cylindrical body 21 or inside. By immersing the pivot shaft 22 into the cylinder 21 to the position where it is immersed, the spring 23 is compressed and deformed, and an appropriate elastic force is obtained. For this reason, the labor which measures the space | interval between the upper surface of one door body and an upper rail with a ruler can be made unnecessary, and a suspension operation | work can be performed efficiently.

  In FIG. 1 to FIG. 3, an embedded type rail is used as the lower rail 2 of the opening 1. However, as shown in FIG. 5, an imposition type rail 2 attached on the floor surface is used. Also good.

  1 to 3 and 5, the lower support 51 is attached to the lower rail 2 of the opening 1, but the rail is omitted as shown in FIG. The lower support 51 may be directly attached to the floor surface.

Partially cutaway front view showing an embodiment of a folding door opening and closing device according to the present invention FIG. 1 is a partially cutaway front view showing an enlarged view of the door bottom side portion of the folding door of FIG. Sectional view along line III-III in FIG. Sectional view of the upper pivot hinge attached to the folding door Vertical side view showing another example of rail Longitudinal side view showing another example of mounting the lower support

Explanation of symbols

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 22a Flange 23 Spring 25 Step part 26 Display part 30 Lower pivot hinge 32 Adjustment bolt 33 Nut 42 Guide roller 50 Upper holder 51 Lower support 54 support hole

Claims (2)

A bottomed cylinder embedded in the upper part of the door butt side of the folding door, a pivot shaft in which the lower end portion is slidably inserted into the cylinder, and the pivot shaft is incorporated into the cylinder and protrudes from the cylinder And a flange is provided at the lower end portion of the pivot shaft located in the cylinder, a step is provided on the inner periphery of the opening end of the cylinder, and the flange contacts the step. In the upper pivot hinge for folding doors, where the pivot shaft is secured by contact,
An upper pivot hinge for a folding door, wherein a display portion for defining a pushing amount of the pivot shaft when the folding door is suspended and adjusted is provided on an outer periphery of a portion of the pivot shaft located outside the cylindrical body. 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 A lower pivot hinge that is rotatably supported by inserting an upper end portion of a pivot shaft in the upper pivot hinge into a support hole of a receiver fixed to an upper portion of an opening that is opened and closed by the folding door. In The round shaft of the adjustment bolt is inserted into the support hole of the receiver fixed to the lower side of the opening and is supported rotatably, and the rail across the width of the opening is fixed to the upper side of the opening. 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,
A folding door opening and closing device characterized in that a display portion for defining a pushing amount of the pivot shaft when the folding door is suspended and adjusted is provided on an outer periphery of a portion of the pivot shaft located outside the cylindrical body.

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