JP4063267B2 - Sliding door device - Google Patents

Description

  The present invention relates to a sliding door device, and more particularly to a technique for juxtaposing three sliding doors in a closed state so as to be flush with each other.

  2. Description of the Related Art Conventionally, there is known a sliding door that can be opened and closed so as to be flush with each other when the two sliding doors are closed and overlapped in the opened state (see, for example, Patent Document 1).

However, a guide groove for guiding the upper runner of each sliding door is integrally formed on the upper rail that guides the conventional two-sliding door, so that the groove processing is necessary and cost is increased. In particular, in order not only to open and close the two-sliding door to the left and right, but also to be flush with the closed state, a plurality of straight sections and a plurality of curved sections are integrally formed in the guide groove. The difficulty of grooving becomes extremely high, leading to high costs, and in particular, it is difficult to ensure the strength of the bent portion.
JP 2002-138740 A

  The present invention was invented in view of the above-described conventional problems, and there is no step between the three sliding doors in the closed state, and it can exhibit an appearance as a series of continuous wall surfaces, It is not necessary to perform highly difficult grooving on the upper rail, the cost can be reduced, the strength of the components of the upper rail can be sufficiently secured, and the expected size (depth dimension) of the entire upper rail can be reduced. It is an object of the present invention to provide a sliding door device that is easy to handle.

  In order to solve the above-mentioned problems, in the present invention, the central sliding door 1c, the one sliding door 1a disposed on one side of the central sliding door 1c in the closed state, and the other side of the central sliding door 1c are disposed. The other sliding door 1b, and the three sliding doors 1 arranged so as to be flush with each other in the closed state, and the one sliding door 1a is moved toward the other sliding door 1b and the one sliding door 1a is moved to the other sliding door. And a guiding mechanism 19 that guides the central sliding door 1c so as to overlap with the other sliding door 1b by moving the central sliding door 1c toward the other sliding door 1b. The upper runners 21 to 23 are attached to the left and right of the upper part, and the upper rail 5 guides the upper runners 21 to 23 so that they can run freely. The upper rail 5 includes upper runners 1a and 1b. Can run freely on 21 and 22 A common rail part 7 for guiding and a central sliding door rail part 8 for guiding the upper runner 23 of the central sliding door 1c to run freely are provided, and the common rail part 7 is a front side extending in parallel with the longitudinal direction of the upper rail 5. The rectilinear rail portion 9, the two left and right outer curved rail portions extending rearward from both longitudinal ends of the front rectilinear rail portion 9, and the inner sides of the longitudinal sides of the front rectilinear rail portion 9. The left and right inner curved rail portions 12 branch from each of the two locations and extend rearward, and the central sliding door rail portion 8 includes a rear straight rail portion 10 parallel to the front straight rail portion 9; The two left and right curved rail portions 13 curved in a semicircular shape from the two positions closer to the inside than the positions facing the two left and right inner curved rail portions 12 in the rear straight rail portion 10. And the above three In the state where the door 1 is closed, the upper runner 21 of the one sliding door 1a enters the respective rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the right side, and the upper runner 23 of the central sliding door 1c The left and right curved rail portions 13 respectively enter the front end portions, and the upper runner 22 of the other sliding door 1b enters the rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the left side. Thus, the three sliding doors 1 as a whole are arranged so as to be flush with each other, and in the open state, the upper runner 21 of the one sliding door 1a moves to the left side of the front straight rail 9 and moves above the central sliding door 1c. The runners 23 are respectively moved to the left side of the rear straight rail portion 10 so that the one sliding door 1a, the other sliding door 1b, and the central sliding door 1c are juxtaposed in front and back, and the upper rail 5 is An upper rail body 50 that opens downward, a rectilinear portion rail cover 51 </ b> A that is disposed in the opening of the upper rail body 50 and forms the rectilinear rail portions 9 and 10 by a gap between the upper rail body 50, and the upper rail body 50. The upper rail body 50, the rectilinear portion rail cover 51A, and the bent portion rail cover 51B are composed of a bent portion rail cover 51B that constitutes a bent rail portion by a notch groove that is arranged in the opening and cut out in a curved shape. It is characterized by being composed of separate parts.

  By setting it as such a structure, a level | step difference does not arise between the adjacent sliding doors 1 in the closed state, and the external appearance as a series of continuous wall surfaces can be exhibited. Moreover, when opening from the one sliding door 1a (or the other sliding door 1b), the one sliding door 1a is moved closer to the front side (inside the room) than the other sliding door 1b and the central sliding door 1c. Furthermore, since the upper rail body 50, the rectilinear portion rail cover 51A, and the bent portion rail cover 51B are configured as separate parts, it is not necessary to perform a highly difficult groove processing on the upper rail 5 as in the prior art. The cost can be reduced, the strength of the component parts can be sufficiently secured, and the expected dimension (depth dimension) of the entire upper rail 5 can be reduced.

  The rectilinear portion rail cover 51A is preferably composed of an extruded material, and the curved portion rail cover 51B is preferably composed of a plate material. In this case, for example, the hollow-shaped rectilinear portion rail cover 51A is easily formed by extrusion molding. In addition, the bent portion rail cover 51B that requires strength can be easily formed by sheet metal processing.

  Further, it is preferable that the bent portion rail cover 51B is detachably fixed to the upper rail body 50. In this case, by removing the screwed bent portion rail cover 51B, the bent portion rail cover 51B is removed from the opening. The runners 21 to 23 can be inserted into the upper rail body 50. Accordingly, it is not necessary to provide an opening in the rectilinear portion rail cover 51A, or to provide a dedicated cover for closing the opening. In addition, the strength of the rectilinear portion rail cover 51A due to drilling can be prevented and the number of parts can be reduced. Assembly can be improved.

  Further, the straight part rail cover 51A is provided with a concave part 150 for connecting the curved part rail cover, and the straight part rail cover 51A is connected to the concave part 150 of the straight part rail cover 51A. It is preferable that the upper runner running surface and the upper runner running surface of the bent portion rail cover 51B are flush with each other. In this case, the straight running portion rail cover 51A and the bent portion rail cover 51B are disposed on the roller running surface. It is possible to prevent the height difference due to the seam from being generated by the recess 150. That is, the step in the height direction at the joint can be made as small as possible by the recess 150, so that a smooth opening / closing operation is possible.

  Further, it is preferable to form a reinforcing recess 151 in the upper surface portion 50a of the upper rail body 50. In this case, the rigidity of the upper surface portion 50a of the upper rail body 50 opened downward can be improved, and the upper rail When the branching member 18 is screwed and fixed to the upper surface portion 50a of the main body 50, the head portion of the screw can be prevented from jumping above the upper surface of the upper rail main body 50 by the concave portion 151. When the upper surface portion 50a of the upper rail body 50 is attached, the screw head does not become a hindrance, and attachment work is facilitated.

  In addition, it is preferable that the guide rib 38 for guiding the upper runners 21 to 23 of the sliding door 1 is suspended downward from the upper surface portion 50a of the upper rail body 50. The guide ribs 38 are provided on the upper rail body 50 side and are not provided on the roller running surface side (upper rail cover 51 side), so that the roller running performance is not adversely affected.

  In the present invention, the three sliding doors are arranged so as to be flush with each other in a closed state, so that no step is generated between the adjacent sliding doors in the closed state. The appearance as a continuous wall surface can be exhibited, and the appearance is greatly improved. In addition, when opening from the one sliding door (or the other sliding door), the one sliding door is moved closer to the front side (inside the room) than the other sliding door and the central sliding door, so that the opening / closing operation becomes extremely easy. In addition, the upper rail body that opens the upper rail downward, the rectilinear part rail cover that is arranged in the opening of the upper rail body and forms the rectilinear rail part by the gap with the upper rail body, and the opening of the upper rail body Since it is composed of a separate part consisting of a curved rail cover that forms the curved rail part by a notched groove cut in a curved shape, it is necessary to perform a highly difficult groove processing on the upper rail as in the past As a result, the strength of the component parts can be sufficiently secured, and particularly the strength of the curved rail portion can be easily secured, so that the rigidity of the upper rail can be increased while being easily assembled. be able to. Moreover, since the rectilinear portion rail cover and the bent portion rail cover are respectively attached to the opening of the upper rail body, it is easy to reduce the expected dimension (depth dimension) of the entire upper rail.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The sliding door device of the present invention has three sliding doors 1 as shown in FIG. 7 and FIG. 10, and a central sliding door 1c in a closed state and a one sliding door 1a arranged on one side of the central sliding door 1c. And the other sliding door 1b disposed on the other side of the central sliding door 1c so that not only the three sliding doors 1 are arranged in a row in the closed state but also the entire three sliding doors are flush with each other. It is arranged. Thus, for example, when used as a closet door, the three sliding doors 1 can exhibit an appearance as a series of walls that are flush with each other without a step, and the appearance is good.

  When the three sliding doors 1 are moved from the one sliding door 1a side to the other sliding door 1b side and opened as shown in FIG. 7, the one sliding door 1a is guided to the front A of the other sliding door 1b and the central sliding door 1c. Is guided to the rear B of the other sliding door 1b, and the interlocking mechanism 15 is used to transmit the operating force on the one sliding door 1a side to the central sliding door 1c to open and close the central sliding door 1c following the one sliding door 1a. And.

  First, the guide mechanism 19 guides the upper runners 21 to 23 attached to the upper part of the sliding door 1, the lower rollers 41 respectively attached to the lower part of the sliding door 1, and the upper runners 21 to 23, the lower roller 41 to run freely. The upper and lower rails 5 and 6 provided on the door frame 4 are configured.

  The door frame 4 is a rectangular frame that is attached to an opening for opening and closing the three sliding doors 1 so as to be freely opened and closed. As shown in FIG. 10, the door frame 4 is composed of upper and lower rails 5 and 6 and left and right vertical frames 4a. It is.

  As shown in FIGS. 1 and 2, the upper rail 5 is divided into an upper rail body 50 that is fixed to the housing and an upper rail cover 51 that is disposed in the opening of the upper rail body 50. In FIG. 1, X is the indoor side, and Y is the ceiling side.

  The upper rail cover 51 is divided into a straight part rail cover 51A and a curved part rail cover 51B. In the gap between the upper rail body 50 and the rectilinear portion rail cover 51A, as shown in FIGS. 6 (a) and 7, a groove shape is aligned in the front and rear directions A and B perpendicular to the longitudinal direction M of the upper rail 5. The common rail portion 7 and the groove-shaped central sliding door rail portion 8 are arranged side by side. The bending portion rail cover 51B is formed with an outer bending rail portion 11, an inner bending rail portion 12, and a curved rail portion 13, which will be described later.

  First, the common rail portion 7 can run on two left and right upper runners 21 and 22 provided at two ends of each upper end of one and the other sliding doors 1b and 1b (that is, left and right sliding doors 1a and 1b). The central sliding door rail portion 8 guides the left and right upper runners 23 provided at the upper end of the central sliding door 1c so as to run freely.

  The common rail portion 7 is formed in a substantially L shape from the both ends in the longitudinal direction M of the front rectilinear rail portion 9 to the rear B, extending in parallel with the longitudinal direction M of the upper rail 5. Bends from two bent left and right outer curved rail portions 11 and two positions closer to the inside than both ends in the longitudinal direction M of the front straight rail portion 9, and bends in a substantially L shape toward the rear B The left and right inner curved rail portions 12 are provided.

  Further, the central sliding door rail portion 8 has a rearward straight rail portion 10 parallel to the front straight rail portion 9 and a position facing the left and right inner curved rail portions 12 in the rear straight rail portion 10. Each has two left and right curved rail portions 13 that are curved in a semicircular shape toward the front A from two locations that approach each other. In FIG. 6A, reference numerals 10a and 10b branch from the communication portion between the longitudinal intermediate portion of the rear straight rail portion 10 and the left and right curved rail portions 13 and rearward from the intermediate portion of the rear straight rail portion 10. A straight running portion that continuously extends toward the left and right side portions of the side straight running rail portion 1, and a portion into which the upper runner 23 on the right side of the central sliding door 1 c enters the straight running portion 10 a when the central sliding door 1 c is brought to the left end. 10b is a portion into which the upper runner 23 on the left side of the central sliding door 1c enters when the central sliding door 1c is moved to the right end.

  The left and right outer curved rail portions 11 provided at the front straight rail 9 have rear end portions, the left and right inner curved rail portions 12 rear end portions, and the left and right two in the rear straight rail portion 10. The front end portion of each curved rail portion 13 is located on a virtual straight line parallel to the front straight rail portion 9 and the rear straight rail portion 10. The distance between the rear end portion of the left outer curved rail portion 11 and the rear end portion of the left inner curved rail portion 12 is between the left and right upper runners 22 of the left sliding door 1 (that is, the other sliding door 1b). The distance between the rear end portion of the right outer curved rail portion 11 and the rear end portion of the right inner curved rail portion 12 is the right and left of the right sliding door 1 (that is, the one sliding door 1a). Further, the distance between the front end portions of the left and right curved rail portions 13 is set equal to the distance between the left and right upper runners 23 of the central sliding door 1c.

  Here, in the closed state, the upper runners 22 of the other sliding door 1b shown in FIG. 7A enter the rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the left side, respectively, Each of the upper runners 23 of the sliding door 1c enters the respective front end portions of the two left and right curved rail portions 13, and each of the upper runners 21 of the one sliding door 1a is located on the right side. 12 are juxtaposed so that the sliding doors 1 are in the same plane parallel to the longitudinal direction M of the upper rail 5 (that is, the three sliding doors 1 are flush with each other). Is done.

  On the other hand, in the right-open state, as shown in FIG. 7E, the left upper runner 23 of the central sliding door 1c moves to the left end portion of the rear rectilinear rail portion 10, and the right upper runner 23 moves to the rectilinear portion 10a. Each moving and each upper runner 21 of the one sliding door 1a moves to the left side of the front straight rail part 9, respectively, so that the one sliding door 1a, the other sliding door 1b and the central sliding door 1c are sequentially from the front as shown in FIG. And are placed side by side.

  Further, in the left-opened state of FIG. 12, each upper runner 21 of the one sliding door 1a enters the respective rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the right side, and the right side of the central sliding door 1c. The upper runner 23 moves to the right end of the rear straight rail portion 10 and the left upper runner 23 moves to the straight portion 10b. The upper runner 22 of the other sliding door 1b moves to the front straight rail portion 9. By moving each to the left side, the other sliding door 1b, the one sliding door 1a, and the central sliding door 1c are juxtaposed in order from the front as shown in FIG. 12 (c).

  These right open state and left open state can be arbitrarily selected. That is, the guiding mechanism 19 moves the central sliding door 1c to a position that does not overlap the other sliding door 1b in a state where the one sliding door 1a, the central sliding door 1c, and the other sliding door 1b overlap each other, and is flush with the other sliding door 1b. In addition, the sliding door 1a is moved to a position where it does not overlap with the other sliding door 1b and the central sliding door 1c so as to be guided to be flush with the central sliding door 1c.

  A pair of opposing L-shaped members for concealing the gaps may be attached to the mutual abutting portions of the sliding doors 1, but for example, an oblique cut portion is provided on the abutting surface of each sliding door 1 to each of the sliding doors 1. It is also possible to eliminate the gap between them.

  On the other hand, the upper runners 21 to 23 of each sliding door 1 are, as shown in FIGS. 4, 5, and 8, a roller block 24, an auxiliary roller 25a protruding upward from the upper surface of the roller block 24, and another roller block. The auxiliary roller 25b protrudes upward from the upper surface of 24. Here, as shown in FIG. 3, the upper roller 34 has a degree of freedom of rotation in a plurality of directions by a roller horizontal axis W and a roller vertical axis Z orthogonal to each other. A sense of stability can be obtained at the same time. Therefore, when the auxiliary roller 25a or 25b bends along any of the auxiliary rails 18a to 18f, it is possible to prevent the generation of metal sound or friction due to rubbing or the like, and temporarily, the curvature of the auxiliary rails 18a to 18f. Even when the radius is made small, it is possible to achieve smooth turning. Further, by reducing the radius of curvature of the auxiliary rails 18a to 18f, the roller block 24 can be easily downsized, and as a result, the upper rail 5 can be easily downsized. Further, by making the roller block 24 made of resin, it is possible to reduce the occurrence of an impact when the sliding door 1 moves to the open position or the closed position, and the usability is improved. Incidentally, when the radius of curvature of the auxiliary rails 18a to 18f is increased, the upper rail 5 is increased and the gap between the sliding doors 1 is increased in the open state. However, the present invention does not have such a problem.

  Moreover, in this embodiment, as shown in FIG. 3, the runner connecting member 40 for connecting the upper runners 21 to 23 to the upper end of the sliding door 1, the upper runners 21 to 23 protrude rearward B from the rear surface of the sliding door 1. Are bent in a substantially L shape so as to be positioned. In the present embodiment, the vertical portion of the runner connecting member 40 is fixed to the sliding door 1 side, and the upper runner 21 (or 22, 23) is pivotally attached to the horizontal portion. In this way, even when the expected dimension (depth) of the door frame is made smaller than before by bending the runner connecting member 40 into a substantially L shape, the one sliding door 1a (operation side) is opened when the sliding door 1 of FIG. 3 is opened. (Sliding door) can be arranged to protrude indoors. Accordingly, in the case of a closet, the storage capacity is increased as compared with the conventional product, and even when the cargo collapse occurs in the storage, it becomes easier to open the one sliding door 1a or the other sliding door 1b. Moreover, it becomes difficult to see the lower rail 6 from the room, and the appearance is further improved.

  Further, as shown in FIG. 3, the roller block 24 has a degree of freedom of rotation in a plurality of directions by a roller horizontal axis W and a roller vertical axis Z orthogonal to each other. A sense of stability of driving can be obtained at the same time. Therefore, when the auxiliary roller 25a or 25b bends along any of the auxiliary rails 18a to 18f, it is possible to prevent the generation of metal sound or friction due to rubbing or the like, and temporarily, the curvature of the auxiliary rails 18a to 18f. Even when the radius is made small, it is possible to achieve smooth turning. Further, by reducing the radius of curvature of the auxiliary rails 18a to 18f, the roller block 24 can be easily downsized, and as a result, the upper rail 5 can be easily downsized.

  By the way, when the below-mentioned interlocking mechanism 15 is provided in the upper end part of the sliding door 1, when the interlocking of the sliding door 1 is started or when the sliding door is fully closed, the handle is attached with the tilt interlocking metal fitting 15a as the rotation center and the handle as the power point. Lifting is likely to occur on the end side of the sliding door 1 on the side that is not. When this lifting occurs, not only the quality of the product is impaired, but also the inclined interlocking metal fitting 15a comes into contact with the upper rail 5 and is damaged, or the roller block 24 is lifted simultaneously with the lifting of the sliding door. There is a problem of damage. Therefore, in this example, as shown in FIG. 5, an interference member 120 made of a resin spacer is disposed between the runner connecting member 40 and the upper rail 5. As a result, not only can the lifting of the sliding door be suppressed to a minimum, but also the upper rail 5 can be prevented from being damaged due to the lifting, and further the breakage of the branching member 18 can be prevented.

  Next, the branch member 18 that guides the auxiliary rollers 25a and 25b will be described. As shown in FIG. 6, at each branch point of the outer curved rail part 11, the inner curved rail part 12, and the curved rail part 13, the height of the auxiliary roller 25a and the auxiliary roller 25b is different depending on the difference in the protruding position. A branching member 18 is provided for determining whether the sliding door 1 travels at the branching point in a straight line or a curved direction.

  Here, each branch member 18 is configured by first to sixth auxiliary rails 18a to 18f (FIG. 7) that are suspended from the common rail portion 7 or the central sliding door rail portion 8 at different lengths. .

  Furthermore, in this embodiment, in each sliding door 1, the protrusion height and the protrusion position of the said auxiliary roller 25a and the auxiliary roller 25b are varied. Here, as shown in FIGS. 4, 5, and 8, the left side auxiliary roller 25 b of the one sliding door 1 a and the other side sliding door 1 b protrudes high and low from the front side position, and the right side auxiliary roller 25 a is moved from the rear front side position. It protrudes low. Further, the left side auxiliary roller 25a of the central sliding door 1c protrudes low from the front side position, and the right side auxiliary roller 25b protrudes high from the rear side position.

  On the other hand, as shown in FIGS. 4, 5, and 6 (a), the first auxiliary rail 18 a is shorter along the left outer curved rail portion 11 from the position on the nearer side than the front straight rail portion 9. The second auxiliary rail 18 b hangs down along the left inner curved rail portion 12 from a position behind the front straight rail portion 9. The third auxiliary rail 18c hangs down along the right outer curved rail portion 11 from a position behind the front linear rail portion 9, and the fourth auxiliary rail 18d is a front linear rail portion 9. It hangs short from the position on the near side along the inner curved rail portion 12 on the right side. Further, the fifth auxiliary rail 18e hangs down along the left curved rail portion 13 from a position on the near side with respect to the rear straight traveling rail portion 10, and the sixth auxiliary rail 18f is a rear straight traveling rail. It hangs short from the position behind the portion 10 along the curved rail portion 13 on the right side.

  Further, in the present embodiment, a pair of front and rear guide ribs 38 for guiding both side surfaces of the roller block 24 are provided along the front straight rail portion 9 and the rear straight rail portion 10, respectively. The roller block 24 that is bent by the branch member 18 is formed on a part of the guide rib 38 that faces each branch point of the curved rail portion 12 and the curved rail portion 13, or the inner curved rail portion 12 or the inner curved rail portion 12 or A cutout hole 39 (FIG. 1) is formed to advance to any one of the curved rail portions 13.

  Here, when each sliding door 1 is closed, the high auxiliary roller 25b on the left side of the other sliding door 1b shown in FIGS. 6 and 7 enters the short auxiliary rail 18a and the low auxiliary roller 25a on the right side enters the long auxiliary rail 18b. It is out. The low auxiliary roller 25a on the left side of the central sliding door 1c enters the long auxiliary rail 18e, and the high auxiliary roller 25b on the right side enters the short auxiliary rail 18f. The high auxiliary roller 25b on the left side of the sliding door 1a enters the short auxiliary rail 18d, and the low auxiliary roller 25a on the right side enters the long auxiliary rail 18c.

  For example, when the one sliding door 1a is opened to the left side from this closed state, the high auxiliary roller 25b of the one sliding door 1a passes straight in front of the auxiliary rail 18b and goes straight to the front of the auxiliary rail 18a, and the low auxiliary roller 25a is a short auxiliary rail. It goes under 18d and goes straight to the position before auxiliary rail 18b. Thereby, each upper runner 22 of the one sliding door 1a can be smoothly moved to the left outer curved rail part 11 and the inner curved rail part 12, respectively. Further, the central sliding door 1c that opens in conjunction with the one sliding door 1a is guided by the auxiliary rollers 25a and 25b, so that each upper runner 23 of the central sliding door 1c can be moved to the left side of the rear straight traveling rail portion 10 and the straight traveling portion 10a (FIG. 7). (A)) and can be moved smoothly. The same applies when the other sliding door 1b is opened to the right.

  As described above, the height and position of the auxiliary rails 18a to 18f are made different, while the height and position of each auxiliary roller 25a and auxiliary roller 25b of the sliding door 1 are made different from each other. It is possible to determine whether the moving direction of the sliding door 1 is straight or curved at each branch point of the curved rail portion 12 and the curved rail portion 13, and therefore, the opening / closing operation of the sliding door 1 can be performed more quickly and smoothly. This can be performed and the operability is greatly improved.

  Next, the interlocking mechanism 15 will be described. As shown in FIG. 8, inclined interlocking metal fittings 15a that protrude from the upper end of one sliding door 1a toward the moving path C of the central sliding door 1c are attached to the upper ends of the one sliding door 1a and the other sliding door 1b, respectively. It has been. Receiving members 15e that can be engaged with and disengaged from the inclination interlocking metal fitting 15a are respectively attached to upper ends of both sides of the central sliding door 1c. The slant interlocking metal fitting 15a and the receiving member 15e constitute an interlocking mechanism 15 for transmitting the operating force on the one sliding door 1a side to the central sliding door 1c and opening and closing the central sliding door 1c in conjunction with the one sliding door 1a. .

  Here, the inclination interlocking metal fitting 15a includes a push-side inclination guide surface 15b inclined so as to be positioned in a direction opposite to the opening direction D of the one sliding door 1a from the base end to the tip end, and a push-side inclination guide. A locking surface 15c that bends in the opening direction D of the one sliding door 1a from the tip of the surface 15b, and a pulling side that protrudes from the tip of the locking surface 15c so as to face the push-side inclined guide surface 15b substantially in parallel. The inclined guide surface 15d is integrally formed. Here, in order to efficiently transmit the operating force on the one sliding door 1a side to the central sliding door 1c, the push-side inclined guide surface 15b and the pulling-side inclined guide surface 15d are perpendicular to the moving path C of the central sliding door 1c. It is most preferable to incline. In a state where the one sliding door 1a and the central sliding door 1c are shifted to the left and right, the receiving member 15e does not interfere with the inclination interlocking metal fitting 15a, and the receiving member 15e is pushed on the push side when the one sliding door 1a and the central sliding door 1c substantially overlap. The receiving member 15e is pushed by the push-side inclined guide surface 15b at a stage where the one-side sliding door 1a and the central sliding door 1c are separated from each other back and forth across the other sliding door 1b. The pushing operation force acts in a direction substantially parallel to the moving path C of the central sliding door 1c, and when closing, the central sliding door 1c is in a state where the receiving member 15e is locked to the locking surface 15c. The receiving member 15e is pulled toward the pulling-side inclined guide surface 15d just before the end of the interlocking, and the pulling operation force P2 approaches the direction substantially parallel to the moving path C of the central sliding door 1c. It is intended to use.

  In this example, the receiving member 15e is constituted by a roller.

  Next, the operation will be described. For example, as shown in FIGS. 7 and 11, when the right one sliding door 1a is moved in the opening direction D, the receiving member 15e and the tilt interlocking metal fitting 15a are in a state where the one sliding door 1a and the central sliding door 1c are shifted left and right. The receiving member 15e comes into contact with the inclined guide surface 15b on the push side of the inclination interlocking metal fitting 15a at the stage where the one sliding door 1a and the central sliding door 1c substantially overlap, and the one sliding door 1a and the central sliding door 1c are the other. As shown in FIG. 9 (a), the receiving member 15e is pushed by the proximal end side of the inclined guide surface 15b on the pushing side and the pushing operation force P1 is changed to the central sliding door as shown in FIG. It acts in a direction substantially parallel to the movement path C of 1c. That is, an operating force P1 parallel to the movement path C of the central sliding door 1c (the rail direction of the curved rail portion 13) is applied to the receiving member 15e at any position from the proximal end to the distal end of the push-side inclined guide surface 15b. Since it acts, there is no loss of force, and the central sliding door 1c is smoothly opened obliquely rearward. Then, as shown in FIGS. 12 (b) → (c) → (d), when the central sliding door 1c and the one sliding door 1a are separated from each other in the front-rear direction, the receiving member 15e is locked to the locking surface 15c of the tilt interlocking metal fitting 15a. This locked state is maintained until the one sliding door 1a and the central sliding door 1c reach the fully open position.

  Conversely, when moving the one-side sliding door 1a in the closing direction E, the one-way sliding door 1a and the central sliding door 1c are closed in conjunction with the receiving member 15e being locked to the locking surface 15c. 9 (b), the receiving member 15e is pulled by the pulling side inclined guide surface 15d, and the pulling operation force P2 acts in a direction substantially parallel to the moving path C of the central sliding door 1c. . Thereby, like the case of FIG.9 (a) opening, there is no loss of force and the center sliding door 1c can move to diagonally forward smoothly. When the central sliding door 1c reaches the closed position, the receiving member 15e is detached from the pulling-side inclined guide surface 15d as shown in FIGS. 12 (d) → (c) → (b), and the interlocking is released. Can move to the closed position alone.

  Moreover, in this example, as shown in FIG. 8, the receiving member 15e is attached to both ends of the central sliding door 1c, respectively, and the right end (the handle side) of the one sliding door 1a and the left end (the handle side) of the other sliding door 1b, respectively. Since the tilt interlocking metal fitting 15a is attached, the interlocking mechanism 15 works in either case of left opening or right opening. That is, in the fully closed state where the three sliding doors 1 are arranged in a line without any step, the other sliding door 1b is moved toward the one sliding door 1a (in the embodiment, the other sliding door 1b which is the left sliding door 1 is moved). The central sliding door 1c is moved in conjunction with the other sliding door 1b by the interlocking mechanism 15, and the other sliding door 1b is guided by the guiding mechanism 19 so as to overlap the front side of the one sliding door 1a. 1c can be guided to overlap the rear side of the one sliding door 1a, and can be opened so that the other sliding door 1b, the one sliding door 1a, and the central sliding door 1c are stacked in this order from the front.

  Here, in the present invention, as shown in FIG. 1, the upper rail 5 is arranged at the upper rail body 50 that opens downward, and the straight rail is disposed in the opening of the upper rail body 50 by a gap between the upper rail body 50 and the upper rail body 50. Separately divided into a straight part rail cover 51A constituting the parts 9 and 10 and a curved part rail cover 51B constituting a curved rail part by a notch groove arranged in the opening of the upper rail body 50 and notched in a curved shape. It is divided into parts. The branch member 18 and the rectilinear portion rail cover 51A are fixed with screws to the upper surface portion 50a of the upper rail body 50, and the bent portion rail cover 51B includes a boss and a rectilinear portion provided on the branch member 18. It is fixed to a screw hole provided in the reinforcing recess 151 of the rail cover 51A with screws.

  Incidentally, conventionally, the guide groove is formed in the upper rail 5 by groove processing, but in this case, groove processing with a high degree of difficulty is required and the cost is high, but in the present invention, the upper rail 5 is attached to the upper rail body. 50, the straight part rail cover 51A, and the curved part rail cover 51B, and these parts are assembled by screwing and fixing, so that the strength of the component parts can be sufficiently secured. As a result of ensuring the strength easily, there is an advantage that the rigidity of the upper rail 5 can be increased while being easily assembled.

  In addition, it is conceivable to provide a hooking portion for connecting the straight portion rail cover 51A on the outside of the upper rail body 50 and a screwing portion on the opposite side. In this case, the expected dimension (depth of the entire upper rail 5) (Dimension) becomes large. In this example, since the rectilinear portion rail cover 51A and the bent portion rail cover 51B are attached to the opening of the upper rail body 50, it is easy to reduce the expected dimension F (FIG. 6A) of the upper rail body 50. It becomes.

  Further, in this example, the upper rail body 50 and the rectilinear portion rail cover 51A are each formed of an extruded aluminum product, and the bent portion rail cover 51B is formed of a plate material. As a result, the hollow-shaped straight portion rail cover 51A can be easily formed by extrusion molding, and the bent portion rail cover 51B requiring strength can be easily formed by sheet metal working.

  Further, in this example, as shown in FIGS. 1 and 2, the bending portion rail cover 51 </ b> B is attached to the upper rail body 50 by screwing. By the way, when the opening of the upper rail body 50 is closed with the upper rail 5 cover in which the bent portion rail cover 51B and the straight portion rail cover 51A are integrated, the outlet of the roller block 24 is formed in a part of the upper rail 5 cover. In addition, it is necessary to provide a dedicated cover for closing the take-out port, resulting in a decrease in strength due to drilling, and an increase in the number of parts, making assembly difficult. On the other hand, in this example, the upper runners 21 to 23 can be inserted into the upper rail main body 50 from the opening portion by removing the bent portion rail cover 51B that is screwed. Accordingly, there is no need to provide an opening in the straight part rail cover 51A or a dedicated cover for closing the opening, and it is possible to prevent a reduction in the strength of the straight part rail cover 51A due to drilling, and to reduce the number of parts and improve the assembly performance. Improvements can be made.

  Further, in this example, as shown in FIG. 13, the straight portion rail cover 51A is provided with a concave portion 150 for connecting the curved portion rail cover, and the curved portion rail cover 51B is connected to the concave portion 150 of the straight portion rail cover 51A. In this state, the upper runner running surface 400 of the straight portion rail cover 51A and the upper runner running surface 401 of the bent portion rail cover 51B are configured to be flush with each other. Conventionally, a step in the height direction is likely to occur due to the joint between the straight part rail cover 51A and the curved part rail cover 51B. Therefore, the rectilinear portion rail cover 51A is provided with a concave portion 151 for connecting the bent portion rail cover, and the flange portion 3001 of the straight portion rail cover 51A and the flange portion 300 of the bent portion rail cover 51B are made to have the same height. As shown in FIGS. 13B and 13C, the step in the height direction can be made as small as possible at the joints on the runner running surfaces 400 and 401, and a smooth opening and closing operation can be performed.

  In this example, as shown in FIGS. 3 to 5, a reinforcing recess 151 is formed in the center of the upper surface of the upper rail body 50. The rigidity of the upper surface portion 50a of the upper rail body 50 opened downward by the reinforcing recess 151 can be improved, and when the branch member 18 is fixed to the upper surface portion 50a of the upper rail body 50 with screws, The concave portion 151 can prevent the screw head from jumping upward from the upper surface of the upper rail body 50. Therefore, when the upper surface portion 50a of the upper rail body 50 is attached to the ceiling, the screw head is obstructed. As a result, the installation work becomes easy. The attachment position of the branch member 18 is very important in defining the movement and closed position of the sliding door 1. Therefore, in this example, in addition to the reinforcing concave portion 151 of the upper surface portion 50a of the upper rail body 50, one hole portion corresponding to a countersunk screw is provided on both the left and right sides of the reinforcing concave portion 151, and the branch member 18 is screwed to this. As a result, the variation in the mounting position of the branch member 18 is minimized.

  Furthermore, in this example, as shown in FIGS. 3 to 5, guide ribs 38 that guide the upper runners 21 to 23 of the sliding door 1 from the upper surface portion 50 a of the upper rail body 50 are provided. The guide rib 38 includes two front and rear ribs for guiding the roller block 24 of the upper runners 21 to 23 from the left and right sides. A portion of the guide rib 38 where the branch member 18 is disposed is removed in advance, and the branch member 18 is disposed in the removed portion (the cutout hole 39 in FIG. 1) so that it can be fixed with screws. By the way, when the guide rib 38 is erected from the rectilinear portion rail cover 51A side, if a rib processing residue occurs in the rib removal processing at the curved rail portion, this rib processing residue causes a step on the roller running surface, Although this adversely affects the running performance of the rollers, as shown in the example of FIG. 3, the guide ribs 38 are suspended from the upper rail body 50 side so that there is no such problem, and there is provisional rib processing remaining on the guide ribs 38 temporarily. However, it does not adversely affect the roller running performance.

  Next, the lower rail 6 will be described. As shown in FIG. 14, a lower roller 41 protrudes from one place at the center of the lower end of the sliding door 1. In this embodiment, a casing 501 that opens downward is fitted into two left and right recesses 500 that are provided at the lower end of the sliding door 1, and the rod 502 is accommodated inside each casing 501. A pressing spring 110 is interposed between the 501 top surface and the rod 502. The rod 502 is prevented from coming off at the lower surface of the casing 501. As a result, the two rods 502 protrude downward from the sliding door 1 while being urged downward by the push-down springs 110, and the lower ends of the rods 502 are arranged at the rear end of the flat roller support fitting 80. It is attached to two places on the upper surface of the part. One lower roller 41 is rotatably supported on the center lower surface side of the front end portion of the roller support fitting 80. As shown in FIG. 15, the lower rail 6 that guides the lower roller 41 includes left and right curved rail portions 42 and 43 that are inclined toward the rear B from both ends in the longitudinal direction M of the common rail portion 7101. One curved rail portion 1344 that is provided and curved in a semicircular shape from the central portion of the central sliding door rail portion 8102 toward the front A is provided. Note that reference numeral 45 in FIG. 15 denotes a branching auxiliary rail.

  Here, the position of the curved rail portion 42 on the left side of the lower rail 6 is opposed to the intermediate position between the outer curved rail portion 11 and the inner curved rail portion 12 on the left side of the upper rail 5. The position of the right curved rail portion 43 of the upper rail 5 is opposed to the intermediate position between the right outer curved rail portion 11 and the inner curved rail portion 12 of the upper rail 5, and the curved rail portion 1344 of the lower rail 6 The position is opposite to the intermediate position between the left and right curved rail portions 13, 13 of the upper rail 5.

  And the upper end part of each sliding door 1 is suspended and supported by two right and left upper runners 21 (22, 23), and the lower end part is guided to the lower rail 6 by one lower roller 41. Running stability can be sufficiently achieved, and by using one lower roller 41, the groove shape of the lower rail 6 can be made simpler than the groove shape of the upper rail 5, and the cost of the lower rail 6 can be reduced. There is also an advantage that can be achieved.

  In the above-described embodiment, the sliding door device with the interlocking mechanism 15 has been described. However, the interlocking mechanism 15 can be omitted, and each sliding door 1 can be manually opened and closed independently.

  Moreover, the sliding door device according to the present invention can be widely applied to various open / close door fields in addition to the closet door.

(A) is a perspective view of the upper rail of one Embodiment of this invention, (b) is a disassembled perspective view. (A) is a bottom view of the upper rail main body same as the above, and (b) is a bottom view of the upper rail cover. It is a side view explaining an upper runner and an upper rail cover same as the above. It is explanatory drawing in case a high auxiliary roller same as the above is guided to a short auxiliary rail. It is explanatory drawing in case a low auxiliary roller same as the above is guided to a long auxiliary rail. (A) is a bottom view explaining the branch member arrange | positioned at the upper rail same as the above, (b) is a top view explaining the position and height of the auxiliary roller of a sliding door. (A)-(e) is a top view explaining the opening / closing operation | movement by the interlocking mechanism same as the above. It is a perspective view explaining the interlocking mechanism same as the above. (A) (b) is a figure explaining the direction of the operating force of the inclination interlocking metal fitting and receiving member of an interlocking mechanism. It is a front view of the door frame in which a sliding door same as the above is arranged. It is explanatory drawing of a right opening operation | movement same as the above. It is explanatory drawing of left opening operation same as the above. (A) is a front view of a straight part rail cover and a bent part rail cover same as the above, (b) is a sectional view taken along the line Q-Q of (a), and (c) is a sectional view taken along the line RR of (a). is there. (A) (b) is a perspective view explaining a lower roller same as the above, (c) is a side view. It is explanatory drawing of a lower runner same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding door 1a One sliding door 1b The other sliding door 1c Central sliding door 5 Upper rail 7 Common rail part 9 Front side rectilinear rail part 10 Rear side rectilinear rail part 11 Outer curved rail part 12 Inner curved rail part 13 Curved rail part 19 Guide mechanism 21- 23 upper runner 38 guide rib 50 upper rail body 51A straight part rail cover 51B curved part rail cover 150 recess 151 reinforcing recess

Claims (6)

  It consists of a central sliding door, one sliding door placed on one side of the central sliding door in the closed state, and the other sliding door placed on the other side of the central sliding door. The three sliding doors are arranged in such a manner that one sliding door is moved toward the other sliding door, the one sliding door is guided so as to overlap the other sliding door, and the central sliding door is moved toward the other sliding door. A guiding mechanism that guides the sliding door so as to overlap the sliding door, and the guiding mechanism is composed of an upper runner attached to the left and right of the upper part of the sliding door and an upper rail that guides the upper runner so that the upper runner can run freely. , A common rail portion that guides each upper runner of the one sliding door and the other sliding door so as to run freely, and a central sliding door rail portion that guides the upper runner of the central sliding door so as to run freely. Parallel to the longitudinal direction The front straight rail part, the two left and right outer curved rail parts extending rearward from both longitudinal ends of the front linear rail part, and the inner side of the longitudinal side ends of the front straight rail part. The center sliding door rail portion includes a rear straight rail portion parallel to the front straight rail portion and a rear straight rail. Two left and right curved rail portions curved in a semicircular shape toward the front side from two positions closer to the inner side than the positions facing the two left and right inner curved rail portions in the section, the three sheets When the sliding door is closed, the upper runner on the one sliding door enters the rear ends of the outer curved rail and the inner curved rail located on the right side, and the upper sliding runner on the central sliding door has two curved rails on the left and right. Enter each front end of And the upper runner of the other sliding door enters the respective rear end of the outer curved rail part and the inner curved rail part located on the left side so that the entire three sliding doors are flush with each other. In the open state, the upper runner of the one sliding door moves to the left side of the front straight rail part, and the upper runner of the central sliding door moves to the left side of the rear straight rail part, respectively. A sliding door device in which sliding doors are juxtaposed in front and rear, and the upper rail is arranged in the opening of the upper rail body and the gap between the upper rail body and the straight rail section that is arranged in the opening of the upper rail body A straight part rail cover and a curved part rail cover that forms a curved rail part by a notched groove that is arranged in the opening of the upper rail body and is cut into a curved shape. A sliding door device comprising a bar and a bent portion rail cover made of different parts.   2. The sliding door device according to claim 1, wherein the straight part rail cover is made of an extruded material, and the curved part rail cover is made of a plate material.   The sliding door device according to claim 1 or 2, wherein a bending portion rail cover is detachably fixed to the upper rail body by screws.   The above-mentioned straight part rail cover is provided with a recess for connecting the curved part rail cover, and the curved part rail cover is connected to the concave part of the straight part rail cover, and the straight run part rail cover is bent with the upper runner running surface. The sliding door device according to any one of claims 1 to 3, wherein the upper runner running surface of the partial rail cover is flush with the upper runner running surface.   The sliding door device according to claim 1 or 3, wherein a reinforcing recess is formed on an upper surface of the upper rail body.   6. The sliding door device according to claim 1, wherein a guide rib for guiding the upper runner of the sliding door is provided downward from an upper surface portion of the upper rail body.

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