JP2018193718A - Folding sliding door - Google Patents

Abstract

To provide a folding sliding door including a novel lower runner with a support member for supporting a wheel and a lower slider guided by a lower rail.SOLUTION: In a folding sliding door: each of panels is movably supported by an upper runner moving along an upper rail and lower runners 11a, 11b moving along lower rails 4a, 4b; weights of panels 2a to 2f are supported by the lower runners 11a, 11b; and each of the panels 2a to 2f are rotatably supported by the upper runner and the lower runners 11a, 11b in the folding direction. The lower runners 11a, 11b each include: a lower wheel 12 rolling on the lower rails 4a, 4b; a support member 13 connected to a support shaft for rotatably supporting the panels 2a to 2f and rotatably mounted with the lower wheel 12,; and a lower slider 14 sliding relative to the lower rails 4a, 4b and supporting the support member 13 so as to be rotatable about a shaft coinciding with the rotation center of the lower wheel 12.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a folding door that supports a panel so as to be movable between an upper rail and a lower rail, and that can fold and store each panel.

  Conventionally, folding doors that are used as doors such as closets or partitions that appropriately divide indoor spaces are supported by an upper runner that moves along the upper rail and a lower runner that moves along the lower rail. In some cases, the weight of the panel is supported by the lower runner (see, for example, Patent Document 1). In the folding door that supports the weight of the panel by the lower runner, the upper runner and the lower runner rotatably support each panel. Specifically, a pair of adjacent panels are connected so as to be rotatable by a hinge or the like. The pair of panels adjacent to each other is in a folded state by rotating the panel surface so that the panel surface is substantially orthogonal to the moving direction of the panel. Can be moved.

Japanese Patent No. 4897538

  The lower runner of the folding door as described above is required to make the wheel move along the lower rail while supporting the weight of the panel with the wheel, and further to be difficult to come off from the lower rail.

  It is an object of the present invention to provide a folding door provided with a novel lower runner having a support member for supporting a wheel and a lower slider guided by a lower rail.

  The folding door that solves the above-mentioned problem is guided by the upper runner that moves along the upper rail and the lower runner that moves along the lower rail so that the panel can move, and the weight of the panel is supported by the lower runner. In the folding door in which the upper runner and the lower runner are rotatably supported in the direction in which the panels are folded, the lower runner rotatably supports the wheels that roll on the lower rail. A support member connected to the support shaft and rotatably attached to the wheel, and a lower slider that slides relative to the lower rail and supports the support member rotatably.

In the folding door, it is preferable that the support member is rotated around a position that coincides with the rotation center of the wheel.
In the folding door, the lower slider preferably includes a side wall that covers a moving direction of the wheel.

In the folding door, the support member is preferably located inside the lower slider.
In the folding door, the lower slider preferably includes a frame portion that surrounds the wheel.

  In the folding door, the frame portion preferably includes a front wall and a rear wall extending in a moving direction of the lower slider, and a rib connecting the front wall and the rear wall.

  In the folding door, the support member includes a pair of support pieces that support the wheel, and the inner surface of the front wall and the inner surface of the rear wall that extend in the moving direction of the lower slider have the tip ends of the pair of support pieces. It is preferable to include the engagement step portion that defines a range in which the pair of support pieces rotate with respect to the lower slider by being engaged.

  ADVANTAGE OF THE INVENTION According to this invention, the folding door provided with the novel lower runner which has the support member which supports a wheel, and the lower slider guided to a lower rail can be provided.

(A) is a front view of a folding door, (b) is a top view of a folding door, (c) is a side view of a folding door. The perspective view of a lower runner and a lower rail. The exploded perspective view of a lower runner. (A) is the side view which looked at the relationship between the lower runner and lower rail in a fully closed state from the side, (b) is a front view. Sectional drawing of an upper runner. The top view of two panels used as the folded pair. The front view which shows the state which two panels used as the folded pair inclined. (A) is a front view which shows the state in which a supporting member is substantially perpendicular | vertical with respect to a lower slider, (b) is a front view which shows the state in which the supporting member inclined with respect to the lower slider. The principal part perspective view of a downspout. (A) is a right side view of a vertical fence, (b) is a front view, (c) is a top view, and (d) is a left side view. The disassembled perspective view which shows the modification of a lower runner.

Hereinafter, an embodiment of a folding door according to the present invention will be described with reference to FIGS.
As shown in FIGS. 1 (a) to 1 (c), the folding door 1 used as a partition is composed of upper rails 3a and 3b that are parallel to each other, with panels 2a to 2f provided on the ceiling surface, and each other provided on the floor surface. It is supported along the parallel lower rails 4a and 4b so that it can be pulled and operated. In the example of FIG. 1, panels 2a and 2b form a pair, panels 2c and 2d form a pair, and panels 2e and 2f form a pair. The panels 2a to 2d use the upper rail 3a and the lower rail 4a, and the panels 2e and 2f use the upper rail 3b and the lower rail 4b.

  Each panel 2a-2f is supported by the lower rails 4a, 4b through the lower runners 11a, 11b at the center in the width direction at the lower edge, and the center in the width direction at the upper edge through the upper runners 21a, 21b. It is supported by the upper rails 3a and 3b. In each panel 2a-2f, it sets so that a bigger load may be supported by lower runner 11a, 11b than upper runner 21a, 21b. The panels 2a and 2b are rotatably connected via a hinge part, and the panels 2c and 2d and the panels 2e and 2f are also rotatably connected via a hinge part. Therefore, when the panels 2a and 2b, the panels 2c and 2d, and the panels 2e and 2f are pivoted with respect to each other, the paired two panels are folded (the panel surface is the moving direction of the panels). In a state (substantially orthogonal to the arrow D1 direction), it can be folded into one side of the upper rails 3a, 3b and the lower rails 4a, 4b.

  Each panel 2a-2f has a rectangular shape, and various decorations are given to each surface. As an example, the panels 2a to 2f may have a light blocking property or may have a light transmitting property. Further, a part may be translucent and the rest may be light-shielding. Each such panel 2a-2f is provided with the upper collar 5a and the lower collar 5b. Further, in the paired panels 2a and 2b, the vertical frame on the right side of the panel 2a in the drawing is the leading rod 5c, and the vertical frame on the left side of the panel 2b in the drawing is the female rod 5d. Further, in the panels 2a and 2b, the vertical frames that face each other and are summoned are summons 5e and 5f. The paired panels 2c and 2d and the panels 2e and 2f have the same configuration.

  As shown in FIG. 2, the lower rails 4 a and 4 b are constituted by rail members 4. The rail member 4 is a long plate-like member along the arrow D1 direction that is the moving direction of the panels 2a to 2d and the panels 2e, 2f, and is displaced forward in the front-rear direction perpendicular to the longitudinal direction. The lower rail 4a is formed at the rear side, and the lower rail 4b is formed at a position displaced rearward. The lower rail 4a is used for the lower runners 11a and 11b of the panels 2a to 2d, and the lower rail 4b is used for the lower runners 11a and 11b of the panels 2e and 2f. In the lower rails 4a and 4b, two supporting grooves 6a and 6b are provided for one lower slider 14 on a support surface that supports the panels 2a to 2d and the panels 2e and 2f. The locking grooves 6a and 6b that are parallel to each other have a bottom surface that is a flat surface, and both side surfaces that are formed as slopes 7 that are inclined downward. Therefore, the locking grooves 6a and 6b are formed so that the width of the opening is narrower than the width of the bottom. Between the locking grooves 6a and 6b, there is provided a rail portion 6c having a concave shape with which the annular protrusion 12d of the lower wheel 12 of the lower slider 14 is engaged. The rail portion 6c is configured such that the tip end portion is widened so that the annular protrusion 12d of the lower wheel 12 can be easily engaged.

  As shown in FIG. 3, the lower runners 11a and 11b have a lower wheel 12 that rolls on the lower rails 4a and 4b, a support member 13 to which the lower wheel 12 is rotatably mounted, and the lower rails 4a and 4b. And a lower slider 14 that moves. One lower wheel 12 is provided for one lower runner 11a, 11b. The lower wheel 12 includes an annular protrusion 12d on the outer peripheral portion, and the annular protrusion 12d has a width that can be engaged with the rail portion 6c. The lower wheel is provided with a center hole 12e through which the shaft 12a is inserted.

  The support member 13 includes a pair of support pieces 13a. 13b and a connecting piece 13c that connects the pair of support pieces 13a and 13b. In the lower wheel 12, between the pair of support pieces 13a and 13b, both end portions of the shaft 12a inserted through the center hole 12e are inserted into insertion holes 12b formed in the support pieces 13a and 13b. A metal support shaft 15 is attached to the connecting piece 13c. The lower end portion of the support shaft 15 is attached to the support hole 15a of the connecting piece 13c. Specifically, the lower end portion of the support shaft 15 includes a caulking shaft 15b. The caulking shaft 15b is inserted into the support hole 15a and then caulked, thereby providing a lower flange 15c. The lower flange 15c is integrated with the lower surface of the connecting piece 13c around the support hole 15a. The upper end portion of the support shaft 15 extending in the upward direction is fixed to the lower collar 5b of the panels 2a to 2f via a shaft holding member or the like. The panels 2a to 2f are supported so as to be rotatable about the support shaft 15 with respect to the support member 13.

  Further, the support shaft 15 penetrates the partition wall 15e, and an intermediate flange 15d is provided at an intermediate portion on the upper side of the lower flange 15c. As shown in FIG. 4, the intermediate flange 15d is located in the lower space of the partition wall 15e of the lower collar 5b. The lower runners 11a and 11b are attached to the partition wall 15e via the base 9 below the partition wall 15e. The base 9 includes an upper half body 9b and a lower half body 9c, and is fixed to the partition wall 15e by a fixing member 9a such as a screw in a state where the upper half body 9b and the lower half body 9c are abutted. The base 9 includes a shaft insertion portion 9d penetrating vertically and a support space portion 9e positioned between and communicated with the upper and lower shaft insertion portions 9d. The support shaft 15 is inserted into the upper and lower shaft insertion portions 9d, and the intermediate flange 15d is positioned in the support space portion 9e. The upper surface of the support space portion 9e is in contact with the upper surface of the intermediate flange 15d and receives the loads of the panels 2a to 2f. Since the base 9 is fixed to the partition wall 15e, the panels 2a to 2f provided with the lower collar 5b can rotate around the support shaft 15 provided in the support member 13 of the lower runners 11a and 11b. Become.

  The lower end portions of the support pieces 13a and 13b are provided with obtuse corner portions formed by two oblique sides, and the end surfaces of the corner portions when rotating in the direction of the arrow D2 about the shaft 12a. It becomes the rotation guide part 13d. Note that the corners may have an acute angle shape or a right angle shape instead of an obtuse angle shape. The shape of the corner is appropriately set according to the range of rotation in the arrow D2 direction.

  The lower slider 14 includes a slider body 16 having a rectangular shape. The slider body 16 has a rectangular shape as an example, and includes a front wall 16a, a rear wall 16b, side walls 16c and 16d, and an upper wall 16e. The front wall 16a and the rear wall 16b are wall portions along the arrow D1 direction as the moving direction of the lower slider 14, and the pair of side walls 16c and 16d are wall portions in a direction intersecting with the arrow D1 direction of the lower slider 14. And covers the direction of the arrow D1 of the lower wheel 12. That is, in the side walls 16c and 16d, the region between the guide portions 17 (first engagement portions 17a) provided on the front wall 16a and the rear wall 16b covers the direction of the arrow D1 of the lower wheel 12. The upper wall 16e includes a through hole 16f penetrating vertically. The front wall 16a and the rear wall 16b have a high portion with respect to the pair of side walls 16c and 16d, and the high portion includes a shaft hole 12c that supports both ends of the shaft 12a. The upper wall 16e includes a rib 16g that is continuous with the front wall 16a and the rear wall 16b and surrounds the through hole 16f together with the front wall 16a and the rear wall 16b. The periphery of the through hole 16f is surrounded by a frame portion formed by the front wall 16a, the rear wall 16b, and the rib 16g.

  16 f of through-holes and the inside of the rib 16g comprise the component arrangement | positioning space part in which the support pieces 13a and 13b of the support member 13, and the lower wheel 12 are inserted. The shaft 12a that is the rotation center of the lower wheel 12 is inserted into the insertion holes 12b of the support pieces 13a and 13b, and both ends thereof are pivotally supported by the shaft holes 12c. Accordingly, the support member 13 is supported by the slider main body 16 so as to be rotatable about the shaft 12a serving as the rotation center of the lower wheel 12 in the component arrangement space portion. The front wall 16a and the rear wall 16b are formed so that the portion having the shaft hole 12c is higher than the rib 16g, and the strength of the portion having the shaft hole 12c is higher than the strength of other regions. Further, the inner surfaces of the front wall 16a and the rear wall 16b are surfaces with which the outer surfaces of the pair of support pieces 13a and 13b are in sliding contact with each other, and are provided with an engaging step portion 16h with which the rotation guide portion 13d is engaged. The engagement step portion 16 h defines a range in which the rotation guide portion 13 d is engaged and the pair of support pieces 13 a and 13 b rotate with respect to the lower slider 14. That is, the rotation guide portion 13d includes inclined portions on both sides in the direction of the arrow D1. The pair of support pieces 13a and 13b can rotate with respect to the lower slider 14 in a range until the inclined portion and the oblique side of the rotation guide portion 13d come into contact with each other.

  A small gap is formed in part A (see FIG. 4) between the outer surfaces of the support pieces 13a, 13b and the front wall 16a and the rear wall 16b, and the support member 13 that supports the lower wheel 12 by the shaft 12a is The lower slider 14 has a slight backlash. The lower wheel 12 is engaged with the rail portion 6c and remains directed in the direction of the arrow D1, but the lower slider 14 intersects the lower wheel 12 in the direction of the arrow D1 by the minute gap of the A portion. Can be displaced in the direction. Therefore, a margin can be provided for the movement operation of the panels 2a to 2f in the direction of the arrow D1.

  As shown in FIGS. 4A and 4B, the front wall 16a and the rear wall 16b include a guide portion 17 that engages with the lower rails 4a and 4b. The guide portion 17 includes a first engagement portion 17a and a second engagement portion 17b that move in the locking grooves 6a and 6b.

  The first engaging portion 17a is formed as an inclined surface whose side faces obliquely upward so as to become wider downward so as to correspond to the engaging grooves 6a and 6b, and is engaged with the lower end portion of the inclined surface. Engaging protrusions that engage with the grooves 6a and 6b are formed. Further, the lower surface of the first engaging portion 17a is a flat surface, and is configured to be able to slide on the bottom surfaces of the locking grooves 6a and 6b. The lower surface of the first engaging portion 17a is formed so that its width is slightly narrower than the opening width of the locking grooves 6a and 6b, and is inserted into the locking grooves 6a and 6b from above the lower rails 4a and 4b. Has been.

  The second engagement portion 17b is formed slightly shorter downward than the first engagement portion 17a, and further protrudes laterally from the engagement protrusion of the first engagement portion 17a to form a retaining protrusion. The second engaging portion 17b includes slopes 17c and 17d (see FIG. 3) above and below the retaining protrusion, respectively. The second engaging portion 17b can be elastically displaced in the front-rear direction of the lower rails 4a and 4b by a slit 17e formed in the upper portion thereof. Such a lower slider 14 makes the first engagement portion 17a and the second engagement portion 17b engage with the engagement groove by moving the second engagement portion 17b in contact with the opening edges of the engagement grooves 6a and 6b. 6a and 6b are inserted and engaged.

  As shown in FIG. 5, the upper runners 21 a and 21 b include a runner body 22. Four upper wheels 23 are rotatably supported by the runner body 22. The upper wheel 23 rolls in the upper rails 3a and 3b in a state in which it cannot move up and down. The runner body 22 and the upper collar 5a of the panels 2a to 2f are connected by a support shaft 24. Specifically, the upper end of the support shaft 24 is fixed to the runner body 22, the support shaft 24 is inserted through the shaft holding member 25, and the flange 26 at the lower end is locked to the shaft holding member 25. The shaft holding member 25 is fixed to the upper collar 5a of the panels 2a to 2f by a fixing member 29 such as a screw.

Next, the operation of the folding door configured as described above will be described.
The opened panels 2e and 2f located between the upper rail 3b and the lower rail 4b are positioned on one end side in the direction of the arrow D1, which is the moving direction, and opened between the upper rail 3a and the lower rail 4a. By placing the panels 2a to 2d in the state between the other end and the panel 2e, it can be brought into a fully closed state (see FIG. 1). Further, from this state, the panels 2a to 2d and the panels 2e and 2f can be moved in the direction of the arrow D1.

  As shown in FIG. 6, when folding such panels 2a-2f, panel 2a, 2b is first folded by a hinge part. Thus, the folded panels 2a and 2b are in a folded state in which the panel surfaces intersect with the direction of the arrow D1, for example, orthogonal. Next, the panels 2c and 2d are folded, and then the panels 2e and 2f are folded. After this, the two folded pairs of panels (2a and 2b, 2c and 2d, 2e and 2f) are moved in the direction of arrow D1. At this time, as shown in FIG. 7, the folded two panels 2a and 2b are parallel to each other in the direction pushed for movement between the upper runners 21a and 21b and the lower runners 11a and 11b. It may lean in a state. Such a state may occur between the paired panels 2c and 2d and between the panels 2e and 2f.

  As shown in FIGS. 8A and 8B, the support member 13 (see FIG. 8A) substantially perpendicular to the lower slider 14 engaged with the lower rails 4a and 4b is attached to the lower slider 14. On the other hand, the support member 13 rotates in the arrow D2 direction around the shaft 12a (see FIG. 8B). As a result, the guide portions 17 of the two panels (2a and 2b, 2c and 2d, 2e and 2f) that are paired are not easily detached from the lower rails 4a and 4b. Here, the range in which the support member 13 can rotate with respect to the lower slider 14 is the range of the engaging step portion 16h with which the rotation guide portion 13d is engaged. Therefore, it is possible to suppress the possibility that the pair of support pieces 13a and 13b rotate too much and damage the ribs 16g and the like. In addition, when the two panels (2a and 2b, 2c and 2d, 2e and 2f) are folded in parallel with each other, the two panels (2a and 2b, 2c and 2d, 2e and 2f) The panel located at is shifted in the vertical direction along the rotation axis of the hinge portion (not shown).

According to the above embodiment, the following effects can be obtained.
(1) When the panels 2a to 2f are moved along the upper rails 3a and 3b and the lower rails 4a and 4b from the folded state, the panels 2a to 2f are moved between the upper rails 3a and 3b and the lower rails 4a and 4b. Even if it tilts, the support member 13 rotates in the direction of the arrow D2 with respect to the lower slider 14. Accordingly, it is possible to make it difficult for the lower slider 14 to come off the lower rails 4a and 4b.

(2) Since the rotation fulcrum of the support member 13 with respect to the lower slider 14 and the rotation fulcrum of the lower wheel 12 coincide on the shaft 12a, the lower runners 11a and 11b can be easily assembled.
(3) A pair of side walls 16c and 16d exist in the moving direction of the lower wheel 12 with respect to the lower rails 4a and 4b, and covers the arrow D1 direction of the lower wheel 12. Accordingly, the pair of side walls 16c and 16d can increase the strength of the lower slider 14 and can prevent the lower wheel 12 from entraining foreign matter existing on the lower rails 4a and 4b.

  (4) When the panels 2a to 2f are folded, a pair of the lower runners 11a and 11b with respect to the two paired panels (2a and 2b, 2c and 2d, 2e and 2f). Side walls 16c and 16d protrude. The pair of side walls 16c and 16d is formed so that the lower wheel 12 is directly connected to the wall portion located at the longitudinal ends of the lower rails 4a and 4b and the pair of side walls 16c and 16d of the adjacent lower runners 11a and 11b. It can be prevented from colliding.

  (5) The widths of the front wall 16a and the rear wall 16b of the lower slider 14 are set according to the width in the front-rear direction of the lower rails 4a and 4b. The support pieces 13 a and 13 b of the support member 13 and the lower wheel 12 are disposed inside the through hole 16 f and the rib 16 g in the lower slider 14. Thus, components such as the lower wheel 12 and the support member 13 that support the load of the panels 2a to 2f are disposed within the size range of the lower slider 14 set according to the width in the front-rear direction of the lower rails 4a and 4b. can do.

  (6) In the lower slider 14, the portion where the lower wheel 12 is disposed is configured to cover as much of the side surface of the lower wheel 12 as possible with a frame portion formed by the front wall 16 a, the rear wall 16 b and the rib 16 g. Thereby, it can suppress that the lower wheel 12 entraps a foreign material by providing the frame part which covers the circumference | surroundings of the lower wheel 12 in this way. Further, it is possible to prevent foreign matter from directly hitting the lower wheel 12.

(7) Since the front wall 16a and the rear wall 16b are connected by the rib 16g, the strength of the front wall 16a and the rear wall 16b that rotatably supports the support member 13 can be increased. Further, the front wall 16a and the rear wall 16b can increase the strength of the peripheral portion of the shaft hole 12c by making the portion provided with the shaft hole 12c higher than the rib 16g.
(8) By engaging the engagement step portion 16h and the rotation guide portion 13d, the range in which the pair of support pieces 13a and 13b rotate with respect to the lower slider 14 can be defined. Thereby, it is possible to prevent the support member 13 from being excessively rotated in the direction of the arrow D2 with respect to the lower slider 14 and being damaged.

  (9) The lower runners 11a and 11b are configured so that the first engaging portion 17a and the second engaging portion 17b of the lower slider 14 are engaged with the locking grooves 6a and 6b, so that the lower runners 11a and 11b The movement is reliably guided, and the lower runners 11a and 11b are prevented from falling off the lower rails 4a and 4b. Further, the lower wheel 12 is engaged with the rail portion 6c, so that the movement of the lower runners 11a and 11b in the traveling direction is reliably guided.

In addition, the said embodiment can also be suitably changed and implemented as follows.
As an example, as shown in FIGS. 9 and 10 (a) to 10 (d), the vertical rods 31 such as the leading rod 5c, the female rod 5d, and the summon rods 5e and 5f are linearly extending in the vertical direction. It is composed of a long member. The vertical gutter 31 includes a front wall 32 and a rear wall 33 facing the front and rear surfaces, and an outer wall 35. The outer side wall 35 is formed with a groove 34 having a concave shape extending in the vertical direction at the center between the front wall 32 and the rear wall 33. The groove 34 is a groove to which a closing member 34a such as a buffer member that softens the contact with the wall portion is attached. The closing member 34a shown in FIG. 9 includes a closing portion that closes the groove 34 and a pair of engaging pieces that are formed integrally with the closing portion, and the whole has a U-shape. The opening of the groove 34 is narrower than the space inside the groove, and the engagement piece of the closing member 34a is engaged with the opening end. As the closing member 34a, there are other members than those shown in FIG. As the closing member 34a, for example, in the case of configuring a male rod, it has a cushion portion protruding in a trapezoidal shape, and in the case of configuring a female rod, it has a recess in which the trapezoidal shape of the male rod is fitted. Become. As described above, the closing member 34a has various shapes depending on the type of the panel, and is attached to the groove 34 in a replaceable manner.

  The inside of the vertical gutter 31 is provided with a recess 36 so as to narrow the width of the front wall 32 and the rear wall 33. The recess 36 includes a first surface 36a substantially perpendicular to the front wall 32 and the rear wall 33, and a second surface 36b substantially parallel to the front wall 32 and the rear wall 33, and the first surface 36a and the first surface 36a. The corner portion formed by the two surfaces 36b is substantially a right angle, and the corner portion is formed of a gentle arc surface to improve the touch. In addition, a holding groove 37 for engaging and holding the panel portion 41 is formed between the recesses 36 on the inner side of the vertical rod 31. An end portion that constitutes the holding groove 37 is constituted by a piece 38 that is bent inward at a substantially right angle from the second surface 36b. A corner portion formed by the piece 38 and the second surface 36b is also formed by an arc surface. The holding groove 37 supports the panel unit 41 via the Grechan 39 when the end of the panel unit 41 is inserted. The concave portion 36 is a characteristic part of the vertical rod 31 and extends vertically adjacent to the end of the panel portion 41 on each of the front side and the rear side of the panel. It can be used as a hanging part.

  The lower slider 14 may not be provided with the engagement step portion 16h, and the rotation range of the pair of support pieces 13a and 13b may be defined by other means. For example, the rib 16g can regulate the rotation range of the pair of support pieces 13a and 13b by causing the pair of support pieces 13a and 13b to contact the rib 16g.

The same effect can be obtained even if the frame part constituted by the front wall 16a and the rear wall 16b and the rib 16g has the same height.
A similar effect can be obtained even if the rib 16g is omitted.

The pair of support pieces 13 a and 13 b in the support member 13 may be located outside the lower slider 14. Thereby, the lower wheel 12 can be enlarged.
The pair of side walls 16c and 16d positioned in the direction of the arrow D1 are formed by the wall portions positioned at the longitudinal ends of the lower rails 4a and 4b and the adjacent lower runners 11a and 11b when the panels 2a to 2f are folded. It becomes a part which collides directly with respect to a pair of side wall 16c, 16d. Therefore, the side walls 16c and 16d may be provided with bumpers for reducing the impact.

The pair of side walls 16c and 16d located in the arrow D1 direction may not be provided. For example, the lower slider 14 may not include the pair of side walls 16c and 16d positioned in the direction of the arrow D1 as long as the lower slider 14 can maintain the strength that can be used. When the pair of side walls 16c and 16d are not provided, the front wall 16a and the rear wall 16b are formed long in the direction of the arrow D1 and an extension is provided. As a result, the lower wheels 12 are directly connected to the wall portions located at the longitudinal ends of the lower rails 4a and 4b in the state in which the panels 2a to 2f are folded at the ends of the front wall 16a and the rear wall 16b. Can be prevented from colliding with each other. Further, it is possible to prevent the lower wheel 12 from directly colliding with the adjacent lower runners 11a and 11b.
-The structure of the guide part 17 is not limited to the structure of the 1st engaging part 17a or the 2nd engaging part 17b. Moreover, you may provide only either one of the 1st engaging part 17a and the 2nd engaging part 17b.

  -The rotation fulcrum with respect to the lower slider 14 of the support member 13 and the rotation fulcrum of the lower wheel 12 do not need to correspond. As an example, it can be configured as shown in FIG. In the example of FIG. 11, the front wall 16a and the rear wall 16b are further formed taller than the example of FIG. 3, and the support hole 13x is provided on the tip side from the shaft hole 12c. That is, the shaft hole 12c and the support hole 13x are provided side by side so as to be separated from each other so as not to interfere with the lower wheel 12 and the support member 13, particularly the connecting piece 13c. The insertion holes 12b of the support pieces 13a and 13b are aligned with the support hole 13x, and the shaft member 13y is inserted therein. Thereby, the rotation fulcrum of the support member 13 with respect to the lower slider 14 is shifted with respect to the rotation fulcrum of the lower wheel 12.

  Further, the lower end portion of the support pieces 13a and 13b has an obtuse corner portion formed by two oblique sides, and the end surface of the corner portion rotates in the direction of arrow D2 about the shaft 12a. This is a turning guide 13d. Further, the inner surfaces of the front wall 16a and the rear wall 16b are engaged with the rotation guide portion 13d, and an engagement step portion 16h that defines a range in which the pair of support pieces 13a and 13b rotate with respect to the lower slider 14. It has.

  The shaft hole 12c and the support hole 13x may be provided side by side in the movement direction (arrow D1). Further, instead of the shaft member 13y, the support member 13 may be pivotally supported by a pivot support protrusion protruding from the inner surfaces of the front wall 16a and the rear wall 16b.

The lower wheel 12 is not supported by the shaft 12a, but the same effect can be obtained even if it is a wheel incorporating a ball bearing. In this case, the shaft 12a may be configured to be provided on the pair of support pieces 13a and 13b so as to coincide with the rotation center of the lower wheel and to be engaged with the shaft holes 12c of the front wall 16a and the rear wall 16b. Thereby, the support member 13 can be rotated with respect to the lower slider 14.
The lower wheel 12 may be rotatably supported by only one of the support pieces 13 a and 13 b of the support member 13.

  The number of upper rails and lower rails extending in parallel with each other is not limited to two, but may be three or more or one.

  DESCRIPTION OF SYMBOLS 1 ... Folding door, 2a-2f ... Panel, 3a, 3b ... Upper rail, 4 ... Rail member, 4a, 4b ... Lower rail, 5a, 5b ... Upper rod, 5c ... Lead rod, 5d ... Female rod, 5e, 5f ... summoning bowl, 6a, 6b ... locking groove, 6c ... rail part, 7 ... slope, 9 ... base, 9a ... fixing member, 9b ... upper half, 9c ... lower half, 9d ... shaft insertion part, 9e ... support space part, 11a, 11b ... lower runner, 12 ... lower wheel, 12a ... shaft, 12b ... insertion hole, 12c ... shaft hole, 12d ... annular projection, 12e ... center hole, 13 ... support member, 13a, 13b ... support piece, 13c ... connection piece, 13d ... rotation guide part, 13x ... support hole, 13y ... shaft member, 14 ... lower slider, 15 ... support shaft, 15a ... support hole, 15b ... caulking shaft, 15c ... lower flange 15d: Intermediate flange, 15e: Partition wall, 16: Su Ida body, 16a ... front wall, 16b ... rear wall, 16c, 16d ... side wall, 16e ... upper wall, 16f ... through hole, 16g ... rib, 16h ... engagement step, 17 ... guide part, 17a ... first engagement Joint part, 17b ... second engagement part, 17c, 17d ... slope, 17e ... slit, 21a, 21b ... upper runner, 22 ... runner body, 23 ... upper wheel, 24 ... support shaft, 25 ... shaft holding member, 26 DESCRIPTION OF SYMBOLS ... Flange part, 29 ... Fixing member, 31 ... Vertical wall, 32 ... Front wall, 33 ... Rear surface wall, 34 ... Groove, 35 ... Outer wall, 36 ... Recessed part, 36a ... First surface, 36b ... Second surface, 37 ... holding groove, 38 ... piece, 41 ... panel part.

Claims (7)

A panel is movably guided by an upper runner that moves along the upper rail and a lower runner that moves along the lower rail, the weight of the panel is supported by the lower runner, and the upper runner and the lower runner In a folding door that supports each panel so as to be rotatable in the direction of folding,
The lower runner is
Wheels rolling on the lower rail;
A support member connected to a support shaft that rotatably supports the panel, and the wheel is rotatably mounted;
A folding door comprising: a lower slider that slides relative to the lower rail and rotatably supports the support member. The folding door according to claim 1, wherein the support member rotates around a position that coincides with a rotation center of the wheel. The folding door according to claim 1, wherein the lower slider includes a side wall that covers a moving direction of the wheel. The folding door according to any one of claims 1 to 3, wherein the support member is positioned inside the lower slider. The folding door according to any one of claims 1 to 4, wherein the lower slider includes a frame portion that surrounds the wheel. The folding door according to claim 5, wherein the frame portion includes a front wall and a rear wall extending in a moving direction of the lower slider, and a rib connecting the front wall and the rear wall. The support member includes a pair of support pieces that support the wheel,
The inner surface of the front wall and the inner surface of the rear wall extending in the moving direction of the lower slider define the range in which the pair of support pieces rotate with respect to the lower slider by engaging the tip portions of the pair of support pieces. The folding door of any one of Claims 1 thru | or 4 provided with the engagement step part to perform.

Images