JP2012041688A - Pivot hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pivot hinge capable of adjusting both of a lateral adjustment mechanism and a longitudinal adjustment mechanism for a minute amount, adjusting a swing center position to be appropriate at all times, and lightly opening and closing a door panel at all times.SOLUTION: The pivot hinge includes a bearing unit 12 embedded in a door panel 2 and a pivot shaft 11 for pivoting the bearing unit 12. The bearing unit 12 includes a lateral adjustment structure, a longitudinal adjustment structure, and a bearing housing 14 for housing the adjustment structures. The lateral adjustment structure includes a lateral adjustment block 26, and a lateral adjustment body 28 for moving the lateral adjustment block 26 to the right and left through a screw structure. The longitudinal adjustment structure includes a longitudinal adjustment block 34, and a longitudinal adjustment body 35 for moving the longitudinal adjustment block 34 to the front and back through a cam structure. When the lateral adjustment body 28 and the longitudinal adjustment body 35 are rotated, the lateral adjustment block 26 and the longitudinal adjustment block 34 are adjusted and moved, and the position of the door panel 2 to the pivot shaft 11 is adjusted.

Description

  The present invention relates to a pivot hinge that pivotally supports a door panel such as a folding door, a swing door, or a folding door, and in particular, a pivot hinge having a bearing unit that is pivotally supported by a pivot shaft embedded in the door panel. The bearing unit incorporates an adjustment mechanism that adjusts the left-right position and the front-rear position of the door panel.

  A pivot hinge having a front-rear adjustment function and a left-right adjustment function is known, for example, from Patent Document 1. There, a flat case fixed to the floor, a bearing plate that pivotally supports a pivot shaft, a first adjustment bolt that adjusts the position of the bearing plate to the left and right, and a second adjustment bolt that adjusts the position of the bearing plate to the front and back. Pivot hinges are configured. By adjusting the first adjustment bolt and the second adjustment bolt, the center of the pivot shaft fixed to the door panel can be adjusted.

  In the above-mentioned pivot hinge, the pivot hinge excluding the pivot shaft is mounted on the floor surface. Therefore, when the door panel is opened and closed, the case and the adjustment bolt are exposed, and cannot be adapted for barrier-free, and the appearance on the appearance is impaired. Further, since the position adjustment is performed by moving each adjustment bolt along the adjustment groove of the case, a minute adjustment is difficult, and a series of adjustment work is troublesome. Since it is necessary to secure a gap between the door panel and the floor surface corresponding to the total height of the case and the adjustment bolt, there is also a disadvantage that sound and light are likely to leak from the previous gap.

  Regarding the present invention, it is known in Patent Document 2 that a bearing unit embedded in a door panel is pivotally supported by a pivot shaft. There, a bearing unit is composed of a case embedded in a door panel, a holding member supported so as to be movable left and right and back and forth in the case, an adjustment screw for moving the holding member to the left and right, and a lock screw. Yes. The pivot shaft is fixedly supported by an L-shaped bracket fixed to the opening frame and pivotally supports the holding member. By rotating the adjustment screw to move the holding member to the left and right, the pivot shaft of the door panel The left and right position with respect to can be adjusted. Moreover, the front-back position with respect to the pivot axis | shaft of a door panel can be adjusted by moving a holding member and an adjustment screw along the long hole of the front-back direction provided in the case.

JP 2003-020849 (paragraph number 0022, FIG. 5) JP 2006-257861 A (paragraph number 0036, FIG. 8)

  According to the pivot hinge of Patent Document 2, since the bearing unit is embedded in the door panel, it can be adapted to be barrier-free and can improve appearance. Further, the left and right positions of the door panel with respect to the pivot axis can be adjusted by rotating the adjustment screw, and a minute adjustment can be performed by adjusting the screwing amount of the adjustment screw. However, when performing front-rear adjustment, it is necessary to move the holding member and the adjustment screw along the elongated hole. Therefore, as with the pivot hinge disclosed in Patent Document 1, it is difficult to make a small amount of adjustment and further time-consuming adjustment is required. In addition, the case embedded in the door panel is directly fastened to the mounting recess of the door panel with a horizontal screw and a vertical screw, so it takes a lot of time to attach and detach the bearing unit, and folding doors, swing doors, etc. Construction and maintenance take time and effort.

It is an object of the present invention to adjust both the left / right adjustment mechanism and the front / rear adjustment mechanism with a left / right adjustment body and a front / rear adjustment body that are rotated, and enables a slight adjustment, thereby simplifying left / right adjustment and front / rear adjustment of a door panel. Moreover, it is to provide a pivot hinge that can be accurately performed.
The objective of this invention is providing the pivot hinge which can perform construction and maintenance of a folding door or a swing door quickly with less effort.

  As shown in FIG. 1, the pivot hinge according to the present invention includes a bearing unit 12 embedded in the door panel 2 and a pivot shaft 11 that pivotally supports the bearing unit 12. The bearing unit 12 includes a left / right adjustment structure that adjusts the left / right position of the door panel 2 with respect to the pivot shaft 11, a front / rear adjustment structure that adjusts the front / rear position of the door panel 2 with respect to the pivot shaft 11, and a bearing housing that houses these adjustment structures. 14 and the like. The left-right adjustment structure includes a left-right adjustment block 26 that is supported by the bearing housing 14 so as to be movable left and right, and a left-right adjustment body 28 that adjusts the left-right adjustment block 26 left and right via a screw structure. The front-rear adjustment structure includes a front-rear adjustment block 34 that is supported by the bearing housing 14 so as to be movable back and forth, and a front-rear adjustment body 35 that adjusts the front-rear adjustment block 34 back and forth via the cam structure. The left / right adjustment block 26 and the front / rear adjustment block 34 can be adjusted and moved by rotating the left / right adjustment body 28 and the front / rear adjustment body 35.

  The holder 21 is fixed to the mounting recess 20 of the door panel 2 (see FIG. 5). The bearing housing 14 is engaged and connected to the holder 21 to integrate the bearing unit 12 with the door panel 2.

  The bearing housing 14 includes a front housing 14a and a rear housing 14b that are divided into front and rear. An adjustment chamber 17 that houses the left / right adjustment block 26 and the front / rear adjustment block 34 is provided between the joint surfaces of the front housing 14a and the rear housing 14b. The left / right adjustment block 26 and the front / rear adjustment block 34 are arranged inside the adjustment chamber 17 so as to be adjacent to each other vertically, and the respective bearing holes 29 and 36 are fitted to the pivot shaft 11.

  The screw structure of the left / right adjustment structure includes a screw shaft 33 provided on the left / right adjustment body 28 and a female screw body 27 assembled to the left / right adjustment block 26. The cam structure of the front / rear adjustment structure is composed of an eccentric pin 44 provided on the front / rear adjustment body 35 and a passive hole 37 formed of an elongated hole in the vertical direction provided on the front / rear adjustment block 34.

  A plurality of door panels 1 and 2 connected in a foldable manner are suspended by a runner 6 and an upper pivot shaft 71. A bearing unit 72 that is pivotally supported by the upper pivot shaft 71 is embedded in the upper corner of the door panel 2. The bearing unit 72 is provided with a height adjustment structure for adjusting the vertical position of the door panel 2 relative to the upper pivot shaft 71.

  A lock structure is provided between the holder 21 and the bearing housing 14 so that the bearing housing 14 connected to the holder 21 is locked and separable. As shown in FIG. 9, the lock structure includes a lock lever 52 pivotally supported on the bearing housing 14, a lock spring 54 that urges and locks the lock lever 52, and lock grooves provided on the front and rear walls of the holder 21. 55. In a state where the bearing housing 14 is engaged and connected to the holder 21, the lock claw 58 of the lock lever 52 falls into and engages with the lock groove 55 to lock the bearing housing 14.

  A click structure for the front / rear adjustment body 35 is provided inside the bearing housing 14. The click structure includes a click shaft 42 having a regular polygonal cross section provided in the front-rear adjustment body 35 and a spring body 47 that receives a side portion of the click shaft 42.

  In the present invention, the bearing unit 12 embedded in the door panel 2 is composed of a left / right adjustment structure, a front / rear adjustment structure, and a bearing housing 14 that accommodates these adjustment structures. Further, the left / right adjustment block 26 can be adjusted to the left and right via a screw structure using the rotationally operated left / right adjustment body 28 as an operation source. Similarly, the front / rear adjustment body 35 that is rotated is used as an operation source, and the front / rear adjustment block 34 can be adjusted back and forth via the cam structure.

  As described above, in the pivot hinge according to the present invention, the door panel 2 is adjusted to the left or right with respect to the pivot shaft 11 according to the amount of rotational operation of the left and right adjustment body 28 and the front and rear adjustment body 35, or the front and rear adjustment is necessary. A small amount can be adjusted according to. Therefore, according to the present invention, the left / right adjustment and the front / rear adjustment of the door panel 2 can be easily and accurately performed, and accordingly, the center position of the swing is always adjusted appropriately to make the door panel 2 light. Can be opened and closed. Furthermore, it is possible to eliminate the unbalanced load due to the poor adjustment of the swing center position, and to eliminate the wear of the hinge shaft 11 and the generation of abnormal noise. Further, since the bearing unit 12 having the left / right adjustment structure and the front / rear adjustment structure is embedded in the door panel 2, it is possible to provide a pivot hinge that can be adapted for barrier-free and can improve the appearance. Furthermore, compared with the conventional pivot hinge which fixes a bearing unit to a floor surface, the clearance gap between the door panel 2 and a floor surface can be made small, and there also exists an advantage which can suppress that a sound and light leak from a clearance gap.

  When the bearing housing 14 is engaged and connected to the holder 21 and the bearing unit 12 is integrated with the door panel 2, the bearing unit 12 can be quickly attached to and detached from the door panel 2 with less effort. Therefore, the construction and maintenance of folding doors, swing doors, folding doors, etc. can be performed quickly with less effort, and the left and right adjustments and the front and rear adjustments of the door panel 2 can be accurately performed while being suspended. Yes. The bearing unit 12 engaged and connected to the holder 21 can be locked and fixed in a non-separable manner with a lock structure to be described later, or can be fastened and fixed with a screw screwed into the holder 21 from the outside of the bearing unit 12. In any case, the bearing unit 12 can be attached and detached with a simple operation by simply unlocking the lock structure or removing the screw.

  The bearing housing 14 is composed of a pair of front and rear housings 14a and 14b divided into front and rear, and the left and right adjustment blocks 26 and the front and rear adjustment blocks 34 are vertically adjacent to each other above and below the adjustment chamber 17 provided between the joint surfaces of the two. When arranged, the front-rear width of the bearing unit 12 can be reduced. Further, since the bearing holes 29 and 36 of the left and right adjustment block 26 and the front and rear adjustment block 34 are fitted to the pivot shaft 11 and the position of the door panel 2 is adjusted using the pivot shaft 11 as an adjustment reference, a minimum adjustment gap is provided. By just securing it, the left and right and front and back can be adjusted accurately. Thereby, the bearing unit 12 capable of performing the left and right adjustment and the front and rear adjustment can be reduced in size and made compact. Therefore, even when the front and rear thickness of the door panel 2 is small, the bearing unit 12 is applied without any problem, and the present invention is concerned. The application range of the pivot hinge can be expanded. In addition, since the left and right adjustment structure, the front and rear adjustment structure, the spring receiving piece 53, the lock spring 54, and the like are assembled to one of the pair of front and rear housings 14a and 14b, the other can be covered and integrated. There is also an advantage that it is possible to save the labor required for.

  If the screw structure is constituted by the screw shaft 33 provided on the left / right adjustment body 28 and the female screw body 27 assembled to the left / right adjustment block 26, the structure of the left / right adjustment structure can be simplified. Further, if the cam structure is constituted by the eccentric pin 44 provided in the front / rear adjustment body 35 and the passive hole 37 provided in the front / rear adjustment block 34, the structure of the front / rear adjustment structure can be simplified, and the entire bearing unit 12 as a whole. This eliminates the complexity of the structure, and further promotes downsizing and downsizing.

  If the bearing unit 72 is embedded in the upper corner of the door panel 2 and a height adjustment structure for adjusting the vertical position of the door panel 2 is provided therein, the vertical adjustment of the door panel 2 can be performed in addition to the horizontal adjustment and the front-back adjustment. Can also be done properly. Therefore, not only can the position of the door panel 2 at the time of construction be adjusted to an optimum state, but even when the door panel 2 is deformed, such as bending or warping, the adjustment structure is adjusted to prevent the operation interference of the door panel 2. The malfunction can be corrected, and the opening / closing operation of folding doors and swing doors can be optimized.

  When a lock structure is provided between the holder 21 and the bearing housing 14 and the two members 21 and 14 are engaged and connected, the lock claw 58 falls into the lock groove 55 and engages, and the bearing unit 12 can be locked and fixed without being separated. By doing so, the door panel 2 can be suspended more easily. This is because it is not necessary to manually switch the lock lever 52 to the locked posture in the process of hanging the door panel 2. Further, when removing the door panel 2, the bearing unit 12 can be separated from the door panel 2 by switching the lock lever 52 to the unlocking posture against the urging force of the lock spring 54. Thereby, construction and maintenance of a folding door, a swing door, or a folding door as a whole can be quickly performed with less effort.

  If a click structure is provided inside the bearing housing 14, the front / rear adjustment body 35 can be rotated by an appropriate amount, and the adjustment position of the front / rear adjustment body 35 can be held, so that the front / rear adjustment body 35 that receives external force rotates. And it can prevent reliably that the adjustment position of the door panel 2 changes. Further, by forming a click structure with the regular polygonal click shaft 42 and the spring body 47 that receives the side portion of the click shaft 42, the spring structure for holding the click shaft 42 is simplified, and the click structure is provided. The manufacturing cost of the front / rear adjustment structure can be saved.

It is a vertical front view of the pivot hinge which concerns on this invention. It is a front view which shows the folding door in the middle of opening. It is a side view which shows an up-and-down pivot structure. It is a disassembled perspective view of a bearing unit. It is a front view of the state which separated the door panel and the bearing unit. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is a vertical front view which shows the lock structure of a bearing unit. It is an expanded view which shows another Example of a bearing housing.

(Example) FIG. 1 thru | or FIG. 9 shows the Example which applied the pivot hinge based on this invention to the folding door. In the present invention, “front / rear”, “left / right”, and “upper / lower” refer to the crossed arrows shown in FIGS.

  In FIG. 2, the folding door is opened and closed by folding a first door panel (door panel) 1 having a large left-right width and a second door panel (door panel) 2 having a small left-right width via a hinge 3 having a biaxial hinge structure. Connected freely. A guide rail 5 is fixed to the upper portion of the gate-shaped opening frame 4, and the runner 6 is transferred and guided by the guide rail 5, and the first door panel 1 on the door end side is suspended by the runner 6. The runner 6 is attached to the left and right center of the upper end surface of the first door panel 1, and can be moved left and right in the guide rail 5 along with the folding opening / closing operation of the first door panel 1. The second door panel 2 is supported by a pivot hinge. The pivot hinge has an upper pivot structure that suspends the upper part of the second door panel 2 and a lower pivot structure (pivot structure) that supports the lower part of the second door panel 2. ). Reference numeral 7 denotes a handle provided on the first door panel 1.

  As shown in FIGS. 3 and 5, the lower pivot structure includes a lower pivot shaft (pivot shaft) 11 fixed to the opening frame 4 via a bracket 10, and a lower pivot shaft 11 embedded in the second door panel 2. The bearing unit 12 is supported by The lower pivot shaft 11 is fixed to the upper surface of the horizontal arm of the L-shaped bracket 10 and stands vertically, and an adjustment shaft 13 having a smaller diameter than the other shaft portions is formed in the upper half portion. The bracket 10 has the vertical arm fastened and fixed to the opening frame 4 with screws in a state where the horizontal arm slightly floats off the floor (see FIG. 1).

  The bearing unit 12 includes a left / right adjustment structure for adjusting the left / right position of the second door panel 2 with respect to the lower pivot shaft 11, and a front / rear adjustment structure for adjusting the front / back position of the second door panel 2 with respect to the lower pivot shaft 11. The bearing housing 14 accommodates these adjusting structures. As shown in FIG. 4, the bearing housing 14 includes a front housing 14a and a rear housing 14b that are divided into front and rear. Both housings 14a and 14b are formed symmetrically with respect to the dividing plane as a center of symmetry. Engaging grooves 15 are formed in the front and rear surfaces of the housings 14a and 14b so that the engaging ribs 16 are adjacent to the upper side of the engaging grooves 15. Is formed. Inside the bearing housing 14 is provided an adjustment chamber 17 that accommodates a left / right adjustment block 26 and a front / rear adjustment block 34, which will be described later, and a shaft accommodation chamber 18 that accommodates the shaft base portion of the lower pivot shaft 11 continuously below the adjustment chamber 17. Is provided.

  As shown in FIG. 5, in order to connect the bearing unit 12, a mounting recess 20 having an open bottom surface and a side surface is formed in the lower corner of the second door panel 2, and a holder for loading the bearing housing 14 therein. 21 is fixed. The holder 21 is made of a die-cast product, and a guide rib 22 that engages with the previous engagement groove 15 and an engagement groove 23 that engages with the engagement rib 16 are formed on the inner surfaces of the front and rear walls. When the holder 21 and the bearing housing 14 are connected, the engaging groove 15 and the guide rib 22 and the engaging rib 16 and the engaging groove 23 are engaged with each other, so that the bearing unit 12 is firmly connected to the second door panel 2. In addition, the second door panel 2 can be supported by the lower pivot shaft 11 via the bearing unit 12.

  In FIG. 4, the left / right adjustment structure includes a left / right adjustment block 26 and a left / right adjustment body 28 that moves the left / right adjustment block 26 left and right via a screw structure. The left / right adjustment body 28 is made of a pan-screw-shaped screw, and the screw shaft 33 and the metal female screw body 27 assembled to the left / right adjustment block 26 constitute the above screw structure. On the operation head 32 of the left / right adjustment body 28, a hook for preventing the protrusion is integrally projected. In a state where the left / right adjustment body 28 is assembled to the bearing housing 14, the screw shaft 33 is screwed into the screw hole of the female screw body 27.

  The left / right adjustment block 26 is formed of a rectangular parallelepiped die-cast product, a bearing hole 29 that fits with the adjustment shaft 13 of the lower pivot shaft 11, a mounting groove 30 for the female screw body 27, and an insertion hole for the left / right adjustment body 28. 31 is formed. The bearing hole 29 is a long hole in the front-rear direction, is formed in a vertically penetrating shape from the upper surface to the lower surface of the left-right adjustment block 26, and is fitted to the adjustment shaft 13 so as to be relatively movable in the front-rear direction. Yes. As shown in FIGS. 6 and 8, the front and rear surfaces of the left and right adjustment block 26 are received by the front and rear walls of the adjustment chamber 17. Therefore, by rotating the left / right adjustment body 28, the left / right adjustment block 26 and the left / right adjustment body 28 move relatively to the left and right, and the left / right adjustment block 26 is moved from the neutral position (state shown in FIG. 6) to the reference S1. Can be adjusted to the left and right within the area indicated by. Actually, since the lower pivot shaft 11 is fixed, the left / right adjustment block 26 and the bearing housing 14 side move back and forth.

  The front-rear adjustment structure includes a front-rear adjustment block 34 and a front-rear adjustment body 35 that moves the front-rear adjustment block 34 back and forth via the cam structure. The front / rear adjustment block 34 is formed of a rectangular parallelepiped die-cast molded product having a smaller front / rear width than that of the left / right adjustment block 26, and a round hole-like bearing hole 36 is formed so as to penetrate vertically. The bearing hole 36 is fitted with the adjustment shaft 13 of the lower pivot shaft 11.

  A passive hole 37 made of an elongated hole in the vertical direction is formed on the right side surface of the front / rear adjustment block 34, and a slide seat 38 projects from the lower portion of the left side surface. The previous cam structure is composed of a passive hole 37 and an eccentric pin 44 provided in the front-rear adjustment body 35. As shown in FIG. 7, the front / rear adjustment block 34 is accommodated in the adjustment chamber 17 in a state of straddling the upper opening of the shaft accommodation chamber 18 in the left-right direction, and the left-right adjustment block 26 is disposed on the upper surface thereof (FIG. 1). reference). A clearance groove 39 for receiving the slide seat 38 is formed on the bottom surface of the adjustment chamber 17, and the clearance groove 39 is opened on the front and rear surfaces of the bearing housing 14.

  The front / rear adjusting body 35 is formed of a plastic molded product integrally including a circular operation head 41 having a cross groove, a click shaft 42 having a regular octagonal cross section, a flange portion 43, and an eccentric pin 44. The left / right adjustment body 28 and the front / rear adjustment body 35 are rotatably supported by the bearing housing 14, and the respective operation heads 32, 41 are provided via upper and lower operation windows 45, 46 provided in the front / rear housings 14 a, 14 b. And exposed to the outer surface of the bearing housing 14.

  In the state where the front / rear adjustment body 35 is assembled to the bearing housing 14, the eccentric pin 44 is engaged with the passive hole 37. Therefore, when the operation head 41 is rotated, the front / rear adjustment block 34 and the front / rear adjustment body 35 move back and forth relatively, and the front / rear adjustment block 34 is moved from the neutral position (the state shown in FIGS. 7 and 8) to the code S2. Can be adjusted back and forth within the area indicated by. When the front / rear adjustment body 35 is rotated, the rotational movement of the eccentric pin 44 is converted into the front / rear movement by the movement hole 37, and the front / rear adjustment block 34 can be adjusted and moved back and forth. However, the lower pivot shaft 11 is actually fixed. Therefore, the bearing housing 14 side moves back and forth.

  A click structure is provided between the front / rear adjustment body 35 and the front / rear housings 14a and 14b in order to rotate the front / rear adjustment body 35 by an appropriate amount and to maintain the adjustment position. The click structure includes a click shaft 42 provided on the front / rear adjustment body 35 and a spring wall (spring body) 47 that receives opposing front and rear sides of the click shaft 42. As shown in FIG. 7, the spring wall 47 is formed integrally with the front and rear housings 14a and 14b. However, since the left and right sides thereof are separated from the other walls by the slits 48, the spring wall 47 can be elastically deformed in the thickness direction. When the front / rear adjustment body 35 is rotated, each top portion of the click shaft 42 can pass between the pair of spring walls 47 while elastically deforming the spring wall 47 in an outwardly bulging manner, and the front / rear adjustment body 35 is rotated 45 degrees. Each time the operation is performed, the opposite side portion of the click shaft 42 can be received by the spring wall 47 and held in position.

  In order to lock the bearing housing 14 connected to the holder 21 so as not to be separable, a lock structure is provided between the two. 4 and 5, the lock structure includes a lock lever 52, a lock spring 54 that urges the lock lever 52 upward via a spring receiving piece 53, a lock groove 55 provided on the front and rear walls of the holder 21, and The lock guide 56 is used.

  The lock lever 52 is integrally provided with a pair of front and rear arms 57, and lock claws 58 that engage with the lock grooves 55 are integrally provided on the front and rear surfaces of the free ends of the arms 57. The other end of the arm 57 is provided with a finger hook 59 for unlocking the lock lever 52 against the urging force of the lock spring 54. The corner portion of the lock lever 52 is swingably supported by a pin 51 that passes through the bearing housing 14 in the front-rear direction. The spring receiving piece 53 is guided by a guide groove 61 provided in the front and rear housings 14a and 14b so as to be only slidable up and down, and its front and rear ends are received by the arm 57 in the assembled state (see FIG. 9).

  When the holder 21 and the bearing housing 14 are connected, the lock claw 58 is pushed down by the lock guide 56 against the urging force of the lock spring 54, and then falls into the lock groove 55 as shown in FIG. That is, when the holder 21 is inserted and loaded into the bearing housing 14 assembled to the lower pivot shaft 11, the bearing housing 14 can be automatically locked and held by the lock structure. In this connected state, the engaging groove 15 and the guide rib 22 and the engaging rib 16 and the engaging groove 23 are engaged with each other. When removing the bearing unit 12 from the holder 21, as shown by an imaginary line in FIG. 9, the finger lever 59 is put on the fingertip 59 to bring the lock lever 52 into the unlocked posture, and in this state, the second door panel 2 is moved to the lower pivot shaft. Separation operation is performed in a direction away from 11.

  The bearing housing 14 is integrated by attaching a left / right adjustment structure, a front / rear adjustment structure, a spring receiving piece 53, a lock spring 54, and the like to one of the front and rear housings 14a and 14b and then covering the other. In this state, the lock lever 52 is assembled and pivotally supported by the pin 51, and the both side housings 14a and 14b cannot be separated by inserting and engaging the horizontal flange L-shaped connecting bracket 62 into the upper portions of the both housings 14a and 14b. To fix. Engaging claws 63 are formed in the front and rear of both ends of the connecting fitting 62 (see FIG. 4), and these engaging claws 63 are press-fitted into the engaging grooves 64 provided on the upper and side surfaces of the front and rear housings 14a and 14b. Is done. As described above, the divided front and rear housings 14a and 14b are clamped and fixed by the lock lever 52 so as not to be separable by the connecting bracket 62 that clamps both the housings 14a and 14b back and forth.

  As shown in FIGS. 3 and 5, the upper pivot structure includes an upper pivot shaft 71 disposed near the side end of the guide rail 5 and an upper bearing unit 72 embedded in the upper corner of the second door panel 2. Constitute. The upper pivot shaft 71 is pivotally supported by a base block 73 loaded on the guide rail 5 and protrudes downward from the base block 73. A height adjusting suspension 74 is provided at the lower end of the small-diameter shaft portion below the upper pivot shaft 71. It is formed in a flange shape. The base block 73 is made of a plastic molded product, and is fixed to the guide rail 5 via a mounting bracket 75 bent in a crank shape. Reference numeral 76 denotes a retaining pin for the upper pivot shaft 71.

  The upper bearing unit 72 includes a bearing housing 78 and a height adjustment structure disposed therein. As shown in FIG. 3, the bearing housing 78 includes a front housing 78a and a rear housing 78b which are divided into front and rear, and as shown in FIG. An engagement rib 80 is formed adjacent to the lower side of the engagement groove 79. A mounting recess 81 whose upper surface and side surfaces are opened is formed at the upper corner of the second door panel 2, and the holder 21 described above is fixed therein. By connecting the holder 21 and the bearing housing 78 in a state where the guide rib 22 on the holder 21 side and the engagement groove 79 are engaged and the engagement groove 23 and the engagement rib 80 are engaged, the second door panel is obtained. 2 can be suspended by the upper pivot shaft 71 via the bearing unit 72.

  The height adjustment structure includes an adjustment lever 85 that is swingably supported by a pin 84 that passes back and forth through the bearing housing 78, a height adjustment screw 86 that adjusts the adjustment lever 85, and the like. The adjustment lever 85 includes a pair of front and rear inverted L-shaped arm walls, and a height adjustment screw 86 is screwed into a plate nut 87 that is tiltably supported by both arm walls. As shown in FIG. 3, the operating head of the height adjusting screw 86 is exposed on the side end surface of the bearing housing 78, and by rotating the operating head, the adjusting lever 85 is swung, The operation can be output to the suspension part 74 via the operation arm part 88. Actually, since the upper pivot shaft 71 is fixed so as not to move up and down with respect to the base block 73, when the height adjusting screw 86 is adjusted, the second panel 2 moves up and down with respect to the upper pivot shaft 71. To do.

  In order to lock the bearing housing 78 connected to the holder 21 so as not to be separable, a lock structure is provided between the two 21 and 78. The lock structure includes a lock lever 92 that is swingably supported by a pin 91 that penetrates the bearing housing 78 forward and backward, a lock spring 94 that urges the lock lever 92 through a spring receiving piece 93, and a holder 21. The lock groove 55 and the lock guide 56 are provided on the front and rear walls. Lock claws 98 are provided on the arms 97 before and after the lock lever 92. The pin 91, the lock lever 92, the spring receiving piece 93, and the lock spring 94 constituting the lock structure are the pin 51, the lock lever 52, the spring receiving piece 53, and the lock constituting the lock structure of the lower pivot structure described above. Since it is the same component as the spring 54 and the operation and function of each component are the same, the description thereof is omitted.

  When connecting the holder 21 and the bearing housing 78, the lock claw 98 is pushed up by the lock guide 56 against the urging force of the lock spring 94, and then falls into the lock groove 55 and engages. That is, when the holder 21 is inserted and loaded into the bearing housing 78 assembled to the upper pivot shaft 71, the bearing housing 78 can be automatically locked and held by the lock structure. In this connected state, the engagement groove 79 and the guide rib 22 and the engagement rib 80 and the engagement groove 23 are engaged with each other.

  Next, a procedure for hanging the second door panel 2 will be described. Before the second door panel 2 is suspended, the holder 21 is fixed in advance to the upper and lower mounting recesses 20 and 81 of the second door panel 2. Further, as shown in FIG. 5, the bearing unit 12 having the lower pivot structure is temporarily assembled to the lower pivot shaft 11, and the bearing unit 72 having the upper pivot structure is temporarily assembled to the upper pivot shaft 71. In this state, the second door panel 2 is moved to the suspension side so that the side openings of the upper and lower holders 21 face the upper and lower bearing units 12 and 72, and the side ends of the guide ribs 22 are engaged with the engaging grooves. Temporarily engages 15 and 79.

  Next, in a state where the upper and lower bearing units 12 and 72 are held unrotatable, the second door panel 2 is pushed into the suspension side, and the bearing units 12 and 72 are fitted into the holder 21. At the same time that the bearing units 12 and 72 are completely inserted into the holder 21, the lock structure is switched to the locked state, and the detachment of both the bearing units 12 and 72 is restricted. Finally, the first door panel 1 and the runner 6 are connected to complete the folding door suspension. The runner 6 and the upper pivot shaft 71 receive the entire weight of the folding door at this time.

  When adjusting the left-right position and the front-rear position of the second door panel 2, the first door panel 1 is opened to such an extent that a driver can be applied to the side end surface of the second door panel 2. In this state, the center of opening and closing of the second door panel 2 relative to the lower pivot shaft 11 can be quickly adjusted by rotating the left / right adjustment body 28 or the front / rear adjustment body 35 with a screwdriver.

  Specifically, when the left / right adjusting body 28 is rotated, the relative position in the left / right direction between the left / right adjusting block 26 and the bearing housing 14 changes, and the second panel 2 is moved relative to the lower pivot shaft 11 by this position adjustment. Can be adjusted. Similarly, when the front / rear adjustment body 35 is rotated, the relative position in the front / rear direction between the front / rear adjustment block 34 and the bearing housing 14 changes, and the second door panel 2 is adjusted relative to the lower pivot shaft 11 by this position adjustment. Can move. In either case, the opening / closing rotation center of the second door panel 2 is adjusted using the upper pivot shaft 71 as an adjustment reference. In addition, as described above, the vertical height of the second panel 2 can be adjusted by rotating the height adjusting screw 86 provided in the upper bearing unit 72.

  FIG. 10 shows another embodiment of the bearing housing 14. In this case, the front housing 14a and the rear housing 14b are integrally formed of polypropylene as a molding material. For this purpose, the upper and lower and central portions of adjacent edges of the front and rear housings 14a and 14b are connected by three integrally formed hinges 101. Further, the connection pins 102 are integrally formed at four locations around the joint surface of the front housing 14a, and the connection holes 103 corresponding to the connection pins 102 are formed at four locations around the joint surface of the rear housing 14b.

  In the assembling process, a left / right adjustment structure, a front / rear adjustment structure, a spring receiving piece 53, a lock spring 54, etc. are assembled to one of the front and rear housings 14a and 14b, and then the integrally formed hinge 101 is bent and the other housing is covered. . At this time, the assembly state can be maintained by press-fitting the connection pin 102 into the connection hole 103, and therefore the connection fitting 62 can be omitted. The other parts are the same as those of the bearing housing 14 described above, so the same members are denoted by the same reference numerals and the description thereof is omitted.

  In the above embodiment, the case where the door load is suspended by the runner 6 and the upper pivot shaft 71 has been described. However, the door load can be supported by the lower pivot shaft. In that case, it is only necessary to support the upper side of the door panel with a pivot structure having a left / right adjustment structure and a front / rear adjustment structure, and to perform left / right adjustment and front / rear adjustment on the basis of the lower pivot shaft. The lower pivot shaft 11 may be fixed to either the opening frame 4 or the floor surface. The upper bearing unit 72 does not need to have a height adjustment structure. In this case, the upper pivot shaft 71 can be supported by a bearing housing 78 so as to be slidable up and down and can be pushed up and biased by a spring. The upper pivot shaft 71 is pivotally supported by a pivot bearing fixed to the opening frame 4 and the guide rail 5.

  The left-right adjusting body 28 does not need to be configured with screws or bolts. For example, the structure may be such that the left and right adjustment body 28 provided with the operation head 32 rotates the screw shaft 33 made of a component different from the left and right adjustment body 28. The cam structure for converting the rotational movement of the front / rear adjustment body 35 to the front / rear movement does not need to be a combination of the eccentric pin 44 and the passive hole 37. It may be a combination. In that case, it is preferable to move the pin and the cam plate back and forth relatively by operating the cam plate provided with the cam groove left and right with the front and rear adjustment body 35 formed of screws or bolts. The left / right adjustment block 26 can be formed of a plastic molded product.

  The click shaft 42 does not need to have an octagonal cross section and may be a polygon. The spring body 47 that receives the click shaft 42 can be formed of a leaf spring. The spring body 47 is sufficient if it receives at least one side portion of the click shaft 42. When the bearing housing 14 is engaged and connected to the holder 21 and the bearing unit 12 is integrated with the door panel 2, the bearing unit 12 can be fixed in a separable manner with a single screw screwed into the holder 21. In that case, the lock structure can be omitted.

2 panel (2nd panel)
10 Bracket 11 Pivot shaft (lower pivot shaft)
12 Bearing unit 14 Bearing housing 14a Front housing 14b Rear housing 17 Adjustment chamber 21 Holder 26 Left / right adjustment block 27 Female screw body 28 Left / right adjustment body 29 Left / right adjustment block bearing hole 33 Left / right adjustment body screw shaft 34 Front / rear adjustment block 35 Front / rear adjustment body 36 Bearing hole 37 of front / rear adjustment block Passive hole 42 Click shaft 44 Eccentric pin 47 Spring body (spring wall)
52 Lock lever 54 Lock spring 55 Lock groove 58 Lock claw

Claims (7)

A pivot hinge comprising a bearing unit (12) embedded in the door panel (2) and a pivot shaft (11) for pivotally supporting the bearing unit (12),
The bearing unit (12) includes a left / right adjustment structure for adjusting the left / right position of the door panel (2) with respect to the pivot shaft (11), and a front / rear adjustment structure for adjusting the front / rear position of the door panel (2) with respect to the pivot shaft (11). A bearing housing (14) containing these adjustment structures,
The left / right adjustment structure includes a left / right adjustment block (26) supported by the bearing housing (14) so as to be movable left and right, and a left / right adjustment body (28) for adjusting the left / right adjustment block (26) to the left and right via a screw structure. Including
The front / rear adjustment structure includes a front / rear adjustment block (34) supported by the bearing housing (14) so as to be movable back and forth, and a front / rear adjustment body (35) for adjusting the front / rear adjustment block (34) back and forth via the cam structure. Including
A pivot hinge capable of adjusting and moving the left / right adjustment block (26) and the front / rear adjustment block (34) by rotating the left / right adjustment body (28) and the front / rear adjustment body (35). The holder (21) is fixed to the mounting recess (20) of the door panel (2),
2. A pivot hinge according to claim 1, wherein the bearing housing (14) is engaged and connected to the holder (21) so that the bearing unit (12) is integrated with the door panel (2). The bearing housing (14) is composed of a front housing (14a) and a rear housing (14b) divided into front and rear,
An adjustment chamber (17) for accommodating the left and right adjustment block (26) and the front and rear adjustment block (34) is provided between the joint surfaces of the front housing (14a) and the rear housing (14b).
The left / right adjustment block (26) and the front / rear adjustment block (34) are disposed in the adjustment chamber (17) so as to be adjacent to each other vertically, and the respective bearing holes (29, 36) are provided on the pivot shaft (11). The pivot hinge according to claim 1 or 2, which is fitted. The screw structure of the left / right adjustment structure is composed of a screw shaft (33) provided on the left / right adjustment body (28) and a female screw body (27) assembled to the left / right adjustment block (26).
The cam structure of the front / rear adjustment structure is composed of an eccentric pin (44) provided on the front / rear adjustment body (35) and a passive hole (37) comprising a vertical hole provided in the front / rear adjustment block (34). The pivot hinge according to any one of claims 1 to 3. A plurality of foldable door panels (1, 2) are suspended by a runner (6) and an upper pivot shaft (71),
A bearing unit (72) pivotally supported by the upper pivot shaft (71) is embedded in the upper corner of the door panel (2).
The pivot hinge according to any one of claims 1 to 4, wherein the bearing unit (72) is provided with a height adjusting structure for adjusting a vertical position of the door panel (2) with respect to the upper pivot shaft (71). A lock structure is provided between the holder (21) and the bearing housing (14) to lock the bearing housing (14) connected to the holder (21) in a non-separable manner.
A lock structure is provided on the lock lever (52) pivotally supported on the bearing housing (14), the lock spring (54) for urging the lock lever (52), and the front and rear walls of the holder (21). Including a locking groove (55),
In a state where the bearing housing (14) is engaged and connected to the holder (21), the lock claw (58) of the lock lever (52) falls into the lock groove (55) and engages, and the bearing housing (14) is locked. 6. A pivot hinge according to any one of claims 2 to 5. A click structure for the front / rear adjustment body (35) is provided inside the bearing housing (14),
The click structure includes a click shaft (42) having a regular polygonal cross section provided in the front / rear adjustment body (35) and a spring body (47) for receiving a side portion of the click shaft (42). The pivot hinge according to any one of 3 to 6.

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