JP4063242B2 - Sliding door device - Google Patents

Description

  The present invention relates to a sliding door device, and more particularly, to a technique for housing a branch member for determining the traveling direction of a three-sliding door to be either straight or curved inside an upper rail.

  Conventionally, in the case of three sliding doors, there is known a sliding type sliding door device in which each sliding door moves linearly in parallel to be in a closed state, a right open state, or a left open state (see, for example, Patent Document 1). .

  However, conventionally, as shown in FIG. 18, the sliding doors 1 to 3 are stepped in the closed state, so that not only the appearance is bad, but also the longitudinal direction of the upper rail for each of the sliding doors 1 to 3. There is also a restriction that the degree of freedom in construction is small, such as the need to provide three rail portions in parallel in the front-rear direction orthogonal to each other, and thus the need to increase the overall expected dimension (depth) of the upper rail.

  Accordingly, the present inventors have devised the sliding door device shown in FIGS. 2 to 4 in the process leading to the present invention. This sliding door device is arranged in the front and rear directions A and B orthogonal to the longitudinal direction M of the upper rail 5 on the upper rail 5 that guides the three sliding doors composed of the left and right sliding doors 1 and 2 and the central sliding door 3 so as to run freely. The left and right sliding doors 1 and 2 are provided at the upper end portions of the left and right sliding doors 1 and 22, respectively. A central sliding door rail portion 8 that guides the upper runner 23 so as to run freely. The common rail portion 7 includes a front rectilinear rail portion 9 that extends parallel to the longitudinal direction M of the upper rail 5, and a front rectilinear rail. The left and right outer curved rail portions 11 extending rearward B from both ends in the longitudinal direction M of the portion 9, and two branches on the inner side from both ends in the longitudinal direction M of the front rectilinear rail portion 9, respectively. The two left and right inwardly curved legs extending backward B The central sliding door rail portion 8 includes a rear straight rail portion 10 parallel to the front straight rail portion 9 and the two left and right inner curved rail portions in the rear straight rail portion 10. 12 and two left and right curved rail portions 13 that are curved in a semicircular shape toward the front side from two locations that are closer to the inside than the position facing each other, and in the closed state, each upper runner 21 of the left sliding door 1 is Each of the upper runners 23 of the central sliding door 3 enters the respective front end portions of the left and right curved rail portions 13, respectively, entering the rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the left side. And each upper door runner 22 of the right side sliding door 2 enters into each rear end part of the outer side curved rail part 11 and the inner side curved rail part 12 which are located in the right side, respectively, and each sliding door 1-3 is the length of the upper rail 5 Parallel to direction M It juxtaposed so that the plane, in the open state, the sliding door 1 to 3 in either right or left end of the upper rail 5 is configured to be juxtaposed to overlap the front and rear. And the branch member for determining the advancing direction of the sliding doors 1-3 to either a straight line or a curve at each branch point of the outer curved rail part 11, the inner curved rail part 12, and the curved rail part 13, respectively. 18 is disposed.

However, in the above sliding door device, since the upper rail is composed of one part, it is difficult to incorporate the branching member inside the upper rail. In addition, the additional process for forming the outer curved rail part, the inner curved rail part, and the curved rail part by grooving is not only complicated, but because of the shape characteristics, it is not possible to perform die cutting with a mold, and the cost There is a problem of becoming high. Further, when fixing the upper rail to the housing with screws, it is necessary to perform screwing work while paying attention to the bending of the upper rail. In addition, when the sliding door is removed from the upper rail and maintenance is performed, there is a problem that much labor is required and the maintainability is poor.
Japanese Utility Model Publication No. 5-78870

  The present invention has been invented in view of the above-described conventional problems, and it is easy to store the branch member inside the upper rail, so that the assembly of the upper rail is improved and the branch member is attached to the upper rail cover. Cutouts, outer curved rail, inner curved rail, and curved rail can be easily formed by grooving, making the upper rail follow-up process easier and reducing costs. In addition, the upper rail can be made to be difficult to bend, the construction can be saved, the inside of the upper rail can be easily confirmed, and a sliding door device excellent in maintainability is provided. is there.

  In order to solve the above-mentioned problem, in the sliding door device according to the present invention, the upper rail 5 of the upper rail 5 is guided to the upper rail 5 that slidably guides the three sliding doors including the left and right sliding doors 1 and 2 and the central sliding door 3. A common rail portion 7 that guides the left and right upper runners 21 and 22 provided at the upper ends of the left and right sliding doors 1 and 2 side by side in the longitudinal directions A and B orthogonal to the longitudinal direction M. A central sliding door rail portion 8 is provided for guiding the left and right upper runners 23 provided at the upper end of the central sliding door 3 so as to be able to run. The shared rail portion 7 is parallel to the longitudinal direction M of the upper rail 5. A front straight rail portion 9 extending in the longitudinal direction, two left and right outer curved rail portions 11 extending rearward from both ends in the longitudinal direction M of the front straight rail portion 9, and a longitudinal direction M of the front straight rail portion 9. Minutes from two locations closer to the inside than both ends The central sliding door rail portion 8 includes a rear straight rail portion 10 parallel to the front straight rail portion 9 and a rear straight portion. 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 rail portion 10 are provided. In the closed state, the upper runners 21 of the left sliding door 1 enter the rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the left side, and the upper runners 23 of the central sliding door 3 move to the left and right. Each of the upper runners 22 of the right sliding door 2 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. By the way, each sliding door -3 are juxtaposed so as to be in the same plane parallel to the longitudinal direction M of the upper rail 5, and in the open state, the sliding doors 1-3 are juxtaposed in the front-rear direction at either the right end or the left end of the upper rail 5. In order to determine whether the moving direction of the sliding doors 1 to 3 is straight or curved at the branch points of the outer curved rail part 11, the inner curved rail part 12 and the curved rail part 13, respectively. The upper rail 5 is divided into an upper rail body 50 fixed to the housing 90 and an upper rail cover 51 having a common rail portion 7 and a central sliding door rail portion 8. The upper rail body 50 and the upper rail cover 51 are connected by a connecting means 52 in a state where the branch member 18 is accommodated between the upper rail body 50 and the upper rail cover 51. .

  With such a configuration, the upper rail 5 is composed of two parts, the upper rail body 50 and the upper rail cover 51, so that the branch member 18 can be easily housed inside the upper rail 5. Compared with the case where the conventional upper rail is a single body, in the present invention, a notch for attaching the branch member 18 to the upper rail cover 51, the outer curved rail portion 11, the inner curved rail portion 12, The follow-up process for forming each of the curved rail portions 13 by grooving can be easily performed, the cost can be reduced, and the upper rail body 50 is screwed to the housing 90. The upper rail cover 51 does not need to be screwed while paying attention to the bending thereof, and the inside of the upper rail 5 can be easily confirmed only by removing the upper rail cover 51 from the upper rail body 50.

  Further, the upper runners 21 to 23 of the sliding doors 1 to 3 are inserted from below the upper rail cover 51 at positions closer to the inner side than the end portion 70 in the longitudinal direction of the upper rail cover 51, and the shared rail portion 7 or the center. It is preferable to form an upper runner insertion notch portion 57 so that it can be inserted into and withdrawn from one of the sliding door rail portions 8. After the upper rail 5 is attached, that is, after the upper rail body 50 is fixed to the housing 90 and the upper rail cover 51 is attached to the upper rail body 50, the troublesome work of fitting the runners 21 to 23 can be eliminated. However, the upper runners 21 to 23 of the sliding doors 1 to 3 can be incorporated into the upper rail 5 from the lower side of the upper rail cover 51 via the upper runner insertion notch 57. When the roller block 24 is replaced, the workability is improved and the upper runner insertion notch 57 can be taken out, so there is no need to remove the upper rail cover 51 from the upper rail body 50, and maintenance is also possible. It becomes good.

  The upper runner insertion notch 57 is preferably formed at an intermediate position between the common rail portion 7 and the central sliding door rail portion 8 and in an area where the rail portion does not exist. The upper runner insertion notch 57 can be formed by effectively using the area where the rail does not exist, and the space of the upper rail cover 51 can be effectively utilized.

  Moreover, it arrange | positions at the branch point of the branch member 18 arrange | positioned at the left side inner curved rail parts 11 and 12 of the said common rail part 7, and the curved rail part 13 of the left side of the rail part 8 for center sliding doors. The branch member 18 is integrally formed, and the branch member 18 disposed at the branch point of the right inner curved rail portions 11 and 12 of the common rail portion 7 and the right curved rail of the central sliding door rail portion 8 are provided. It is preferable that the branch member 18 arranged at the branch point of the portion 13 is integrally formed. In this case, the number of the branch members 18 is reduced by integrating the branch members 18 adjacent to each other. Therefore, the cost can be reduced and the assemblability can be improved. Further, the labor for attaching the branch member 18 can be reduced, and the construction can be saved. In addition, since the variation in construction of the branching member 18 can be eliminated, the variation in the drawing position of the sliding doors 1 to 3 at the center position can be reduced, and the running performance of the sliding doors 1 to 3 can be further improved.

  Further, it is preferable to fix the branch member 18 to the upper rail cover 51 with a screw tool 55. In this case, bending of the upper rail cover 51 can be easily and inexpensively prevented by the branch member 18, and the upper rail cover 51 can be prevented. The use of the branch member 18 eliminates the need for a dedicated reinforcing material for preventing the upper rail cover 51 from being bent, while preventing an increase in the number of components. The strength of the upper rail cover 51 can be improved.

  Further, the screwing position of the branch member 18 with respect to the upper rail cover 51 is set at a position near the outer curved rail portions 11 and 12 of the common rail portion 7, a position near the inner curved rail portions 11 and 12, and a central sliding door rail. It is preferable to set each of the portions 8 in the vicinity of the curved rail portion 13, and in this case, the outer curved rail portion 11, the inner curved rail portion 12, and the curved rail portion 13 have the same reinforcing effect by screwing. As a result, the upper rail cover 51 can be more effectively prevented from being bent.

  Moreover, it is preferable to project the lower roller 41 guided by the lower rail 6 from one central portion of the lower end of each of the sliding doors 1 to 3. By supporting with 21 to 23 and one lower roller 41, not only can the cost of the lower roller 41 be reduced, but also the lower rail 6 can be simplified and the appearance of the lower rail 6 can be improved. In addition, since the sliding doors 1 to 3 are supported by the upper rail 5 and the lower rail 6 at three points, the running stability can be sufficiently secured.

  In the sliding door device according to the present invention, the branch member can be easily accommodated inside the upper rail, the assemblability of the upper rail is improved, and a notch for attaching the branch member to the upper rail cover or the outside is provided. The curved rail part, inner curved rail part, and curved rail part can be easily formed by grooving each, making the upper rail follow-up process easier and reducing the cost compared to the prior art. Can be made difficult to bend, and the construction can be saved, and the inside of the upper rail can be easily confirmed, resulting in excellent maintainability.

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

  As shown in FIG. 2, the door frame 4 of the three sliding doors including the left and right sliding doors 1 and 2 and the central sliding door 3 according to the present embodiment includes left and right vertical frames 4 a, an upper rail 5, and a lower rail 6. ing.

  As shown in FIG. 3, the upper rail 5 has a groove-shaped shared rail portion 7 and a groove-shaped central sliding door rail portion 8 arranged in the front-rear directions A and B orthogonal to the longitudinal direction M of the upper rail 5. Are arranged side by side. The common rail portion 7 guides the left and right upper runners 21 and 22 provided at two positions on both ends of the upper ends of the left and right sliding doors 1 and 2 respectively. Is for guiding the left and right upper runners 23 provided at the upper end of the central sliding door 3 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.

  The central sliding door rail portion 8 is located on the inner side of the rear straight rail portion 10 parallel to the front straight rail portion 9 and the positions facing the left and right inner curved rail portions 12 in the rear straight rail portion 10. And two left and right curved rail portions 13 that are curved in a semicircular shape toward the front A from two locations close to the front. In addition, 10a in FIG. 3 is a notch part which prevents the straight run of the upper runner 23 on the right side of the central sliding door 3 when the central sliding door 3 is moved to the left end, and 10b in FIG. 3 is the central sliding door 3 at the right end. It is a notch part which prevents the upper runner 23 on the left side of the central sliding door 3 from going straight when it is moved. Moreover, the arrow A in FIG. 3 has shown the room side, and the arrow B has shown the closet side.

  Here, in the closed state shown in FIG. 4A, each upper runner 21 of the left sliding door 1 enters the respective rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 located on the left side, and the center. Each of the upper runners 23 of the sliding door 3 enters the respective front end portions of the two left and right curved rail portions 13, and each of the upper runners 22 of the right sliding door 2 is located on the right side. The sliding doors 1 to 3 are juxtaposed so as to be in the same plane parallel to the longitudinal direction M of the upper rail 5 as shown in FIG.

  On the other hand, in the right-opening state shown in FIG. 4D, each upper runner 21 of the left sliding door 1 enters the respective rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 positioned on the left side, Each upper runner 23 of the sliding door 3 moves to the left side of the rear-side straight-ahead rail portion 10 and each upper runner 22 of the right-side sliding door 2 moves to the left side of the front-side straight-ahead rail portion 9, respectively. 2, the left sliding door 1 and the central sliding door 3 overlap each other.

  Further, in the left open state, each upper runner 22 of the right sliding door 2 enters the respective rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 positioned on the right side, and each upper runner 23 of the central sliding door 3. Are moved to the right side of the rear straight rail part 10 and the upper runners 21 of the left sliding door 1 are moved to the right side of the front straight rail part 9, respectively, so that the left sliding door 1 and the right sliding door 2 The central sliding door 3 overlaps and is juxtaposed. The right-open state and the left-open state are selectable.

  According to the above configuration, in the sliding door device capable of opening and closing from the left sliding door 1 and opening and closing from the right sliding door 2, respectively, the sliding doors 1 to 3 are arranged in the same plane in the closed state, so that the whole becomes flat. For example, when used as a closet door, each of the sliding doors 1 to 3 can be given a sense of unity with the surrounding indoor wall, and as a result, compared with a conventional sliding door, The appearance is greatly improved. In addition, since the three rail portions are conventionally arranged in parallel in the longitudinal directions A and B orthogonal to the longitudinal direction M of the upper rail 5, the expected size (depth) of the entire upper rail 5 is increased. On the other hand, the sliding door device of the present invention can guide each sliding door 1 to 3 with two rail portions (common rail portion 7 and central sliding door rail portion 8), and therefore the expected dimension D of the upper rail 5 as a whole (FIG. 3). As a result, for example, when used as a closet door, it is possible to increase the amount of storage compared to the conventional case, and even if load collapse occurs in the closet, at least One sliding door can be opened.

  Next, the branch member 18 for performing the opening / closing operation of the sliding doors 1 to 3 more easily will be described. As shown in FIG. 3, the branch points of the outer curved rail part 11, the inner curved rail part 12, and the curved rail part 13 branch according to the height of the auxiliary rollers 25a and 25b and the difference in the protruding position, respectively. A branching member 18 is provided for determining whether the sliding doors 1 to 3 at the point are traveling straight or curved. Here, each branch member 18 is configured by first to sixth auxiliary rails 18 a to 18 f that are suspended from the common rail portion 7 or the central sliding door rail portion 8 at different lengths. Each of the branch members 18 is provided with a screwing boss 65 shown in FIG. 14. The branch member 18 is disposed above the upper rail cover 51, and the lower end of the boss 65 is used as a screw hole of the upper rail cover 51. The respective branch members 18 can be screwed in a state where they are floated from the rail portions 11 to 13 of the upper rail cover 51 by screwing into the bosses 65 through screws from below the upper rail cover 51.

  On the other hand, the upper runners 21 to 23 of the sliding doors 1 to 3 are, as shown in FIG. 4A, a roller block 24 and a set of two auxiliary rollers 25a and 25b that protrude upward from the upper surface of the roller block 24. (Hereinafter, referred to as double auxiliary rollers 25a and 25b).

  Moreover, in this embodiment, in each sliding door 1-3, the protrusion height of the said 2nd auxiliary | assistant roller 25a, 25b and its protrusion position are varied. Here, the double auxiliary roller 25a on the outer side of the left sliding door 1 (the same applies to the right sliding door 2) is protruded high from the front end position of the roller block 24, and the double auxiliary roller 25b on the inner side is lowered from the rear end position of the roller block 24. It is protruding. Similarly, the left double auxiliary roller 25b of the central sliding door 3 protrudes low from the front end position of the roller block 24, and the right double auxiliary roller 25a protrudes high from the rear end position of the roller block 24.

  On the other hand, the first auxiliary rail 18a hangs short along the front end portion of the left outer curved rail portion 11 on the left side of the common rail portion 7, and the two auxiliary rollers 25a on the left sliding door 1 shown in FIG. Opposed. The second auxiliary rail 18b hangs down along the rear end portion of the left inner curved rail portion 12 on the left side of the common rail portion 7, and faces the low double auxiliary roller 25b of the left sliding door 1 shown in FIG. Has been placed. Further, as shown in FIG. 3, the third auxiliary rail 18 c hangs down along the rear end portion of the outer curved rail portion 11 on the right side of the common rail portion 7, and the double auxiliary assist with the lower right sliding door 2. It is arranged to face the roller 25b. The fourth auxiliary rail 18 d hangs short along the front end portion of the inner curved rail portion 12 on the right side of the common rail portion 7, and is disposed opposite to the high double auxiliary roller 25 a of the right sliding door 2. On the other hand, the fifth auxiliary rail 18e hangs short along the front end portion of the curved rail portion 13 on the left side of the central sliding door rail portion 8, and is disposed opposite to the high double auxiliary roller 25a of the central sliding door 3. Yes. Furthermore, the sixth auxiliary rail 18f hangs down along the rear end portion of the curved rail portion 13 on the right side of the central sliding door rail portion 8, and is disposed opposite to the lower double auxiliary roller 25b on the right side of the central sliding door 3. Has been.

  Moreover, in this embodiment, when moving the center sliding door 3 from the left side to the center position, a part of the rear straight traveling rail portion 10 is arranged so that the left side double auxiliary rollers 25a and 25b enter only the left curved rail portion 13. Is provided with a notch 10a (FIG. 3). Further, when the central sliding door 3 is moved from the right side to the central position, the notch portion 10b is formed in a part of the rear straight rail portion 10 so that the right double auxiliary rollers 25a and 25b enter only the right curved rail portion 13. Is provided.

  Although FIG. 3 illustrates the case where the first to sixth auxiliary rails 18a to 18f are configured separately, the present invention is not limited to this, and as shown in FIGS. 18 b and the fifth auxiliary rail 18 e are integrated to form one branch member 18, and the fourth auxiliary rail 18 d and the sixth auxiliary rail 18 f are integrated to configure one branch member 18. It is also possible.

  According to the above configuration, the roller block 24 having the low double auxiliary roller 25b shown in FIG. 13 does not interfere with the auxiliary rails 18a, 18d, and 18e having a short hanging length, and the auxiliary rails 18b, 18c, having a long hanging length are not interfered. On the other hand, the roller block 24 having the high duplex auxiliary roller 25a can be bent along the auxiliary rails 18a, 18d, and 18e having a short drooping length. Further, in the common rail section 7, auxiliary rails 18b and 18c having a long drooping length are arranged at the rear B of the front straight traveling rail section 9, and the entrances of the auxiliary rails 18a and 18d having a short drooping length are disposed in front of the front straight traveling rail section 9. It is arranged in A. Therefore, by moving the roller block 24 having the low duplex auxiliary roller 25b along the rear B of the front straight rail portion 9, the auxiliary with a long hanging length without interfering with the short hanging rails 18a and 18d. On the other hand, the roller block 24 having the high double auxiliary roller 25a is moved in front A of the front linear rail portion 9 by the auxiliary rails 18a and 18d having a short drooping length. Be guided.

  In this way, the height and the position of the first to sixth auxiliary rails 18a to 18f are made different, while the height and the position of each of the double auxiliary rollers 25a and 25b of the sliding doors 1 to 3 are made different. It is possible to determine whether the traveling direction of the sliding doors 1 to 3 is straight or curved at each branch point of the outer curved rail portion 11, the inner curved rail portion 12, and the curved rail portion 13. The opening and closing operation can be performed more quickly and smoothly, and the operability is greatly improved.

  In FIG. 12, the front straight rail portion 9 and the rear straight rail portion 10 are each provided with a pair of front and rear guide ribs 38 for guiding both side surfaces of the roller block 24, and the outer curved rail portion 11 and the inner curved rail portion. 12. A roller block 24 with an auxiliary roller that is bent by the branch member 18 is provided on a part of one guide rib 38 that faces each branch point of the curved rail portion 13, and the outer curved rail portion 11 or the inner curved rail portion 12. Alternatively, a roller block 24 with an auxiliary roller that moves straight by the branching member 18 is formed inside the rail portions 11 to 13 that are formed in the rail portion 11 and 13 that are opposed to the notch hole 39. An example in which a straight guide member 26 for guiding in a straight direction is provided is shown.

  In the present embodiment, in the second auxiliary rail 18b and the fourth auxiliary rail 18d, a notch hole 39 is formed in one guide rib 38 facing the inlet portion, and at the front position of each notch hole 39. Each of the straight guide members 26 parallel to the other guide rib 38 is provided. The double auxiliary rollers 25a and 25b that go straight without entering the second and fourth auxiliary rails 18b and 18d move while hitting the guide member 26 for straight movement, so that the double auxiliary rollers 25a and 25b that go straight are provided. Further, the roller block 24 can be prevented from rotating around the vertical axis at the notch hole 39 or from being caught by the notch hole 39 and becoming unable to move. Further, in each of the fifth and sixth auxiliary rails 18e and 18f, a notch hole 39 is formed in one guide rib 38 facing the curved portion, and the other guide rib 38 and a rear position of each notch hole 39 are provided. Parallel guide members 26 for straight movement are provided. In this embodiment, the straight traveling guide member 26 includes a sandwiched straight traveling guide member 26a (FIG. 12 (b)) that sandwiches a low traveling auxiliary roller 25b that travels straight from both sides, and a higher dual assisting roller 25a that travels straight. The contact-type linearly moving guide member 26b (FIG. 12A) that is in contact with each other is used. Accordingly, the double auxiliary rollers 25a and 25b that move straight without entering the fifth and sixth auxiliary rails 18e and 18f move while striking the guide member 26 for straight movement, whereby the rotation of the roller block 24 with the auxiliary roller that moves straight is rotated. It is possible to prevent the sliding doors 1 to 3 from moving straight.

  Furthermore, in the present invention, as shown in FIG. 5, the upper rail 5 includes an upper rail body 50 fixed to the housing, and an upper rail cover 51 provided with the common rail portion 7 and the central sliding door rail portion 8. The upper rail body 50 and the upper rail cover 51 are connected by connecting means 52.

  As shown in FIG. 5, the connecting means 52 of this embodiment includes an upper rail body 50 that is fixed to a housing 90, an upper rail cover in which a common rail portion 7 and a central sliding door rail portion 8 are formed. 51, and the upper rail body 51 is fixed to one side of the upper rail body 50 after the upper rail body 50 is screwed to the housing 90. The other end portions of the upper rail cover 51 are fastened to each other by a screw tool 55 in a state where the hook portion 54 provided in the portion is hooked and locked and temporarily fixed.

  FIG. 6 shows another example of the connecting means 52. After the upper rail body 50 is screwed to the housing 90, the locking portion 56 of the upper rail cover 51 is slid and locked to the upper end corner of the upper rail body 50. In the temporarily fixed state, the lower corner portion located diagonally to the upper end corner portion of the upper rail body 50 and the lower end corner portion of the upper rail cover 51 are fastened to each other by the screw tool 55. .

  Thus, by configuring the upper rail 5 with the two parts of the upper rail body 50 and the upper rail cover 51, the branch member 18 can be easily housed inside the upper rail 5, and the assemblability of the upper rail 5 is improved. Further, there are notches for attaching the branch member 18 to the upper rail cover 51, and additional steps for forming the outer curved rail portion 11, the inner curved rail portion 12, and the curved rail portion 13 by groove processing. It becomes extremely easy and the cost can be reduced.

  Furthermore, since only the upper rail body 50 separate from the upper rail cover 51 has only to be fixed to the housing 90 with screws, there is no need to perform screwing work while paying attention to the bending of the upper rail 5 as in the prior art. It is possible to reduce the construction. In addition, at the time of maintenance, the inside of the upper rail 5 can be easily confirmed by simply removing the upper rail cover 51 from the upper rail body 50, so that the maintainability is improved.

  FIG. 8 shows that the upper runners 21 to 23 of the sliding doors 1 to 3 are inserted from the lower side of the upper rail cover 51 at a position closer to the inner side than the longitudinal end portion 70 of the upper rail cover 51. An example is shown in which an upper runner insertion notch portion 57 is formed so as to be able to be taken in and out of one of the sliding door rail portions 8. In this example, even after the upper rail body 50 and the upper rail cover 51 are connected and the upper rail 5 is assembled, the upper runners 21 to 23 of the sliding doors 1 to 3 are incorporated into the upper rail 5 from below the upper rail cover 51. This makes it possible to improve the workability and to remove the upper rail cover 51 from the upper rail body 50 because the upper runner insertion notch 57 can be removed when the roller block 24 is replaced. And maintenance is also good.

  As shown in FIGS. 9 and 10, the upper runner insertion notch portion 57 has the upper runner insertion notch portion 57 at an intermediate position between the common rail portion 7 and the central sliding door rail portion 8 and has a rail portion. Preferably, it is formed in an area where the upper roller 34 does not travel. In this example, the upper runner insertion notch 57 is closed by the cap 60. As shown in FIGS. 8 and 9, the cap 60 has a bottom portion 60 a with a screw hole along the shape of the upper runner insertion cutout portion 57 and a rising portion 60 b that closes the rib cutout hole 39 formed in the guide rib 38. And are integrally formed. The upper runner insertion notch portion 57 communicates with the front straight rail portion 9 of the common rail portion 7 and communicates with the rear straight rail portion 10 of the central sliding door rail portion 8. Then, the upper runners 21 to 23 for the common rail portion 7 are inserted from the upper runner insertion notch portion 57 and inserted into the rail portion (7 or 8) from the rib notch hole 39 of the guide rib 38, and then tapped at the center portion. Both ends of the processed cap receiver 61 are screwed to both sides of the upper runner insertion cutout 57, and then the bottom surface 60a of the cap 60 is applied to the cap receiver 61 from below. The rising portion 60b is inserted into the rib cutout hole 39, and in this state, the bottom surface portion 60a of the cap 60 and the cap receiver 61 are screwed together. Accordingly, the cap 60 can be fixed so as not to be detached from the upper runner insertion notch 57.

  Since the bottom surface portion 60a of the cap 60 is shaped along the shape of the upper runner insertion notch portion 57, the upper runner insertion notch portion 57 does not stand out from the indoor side, and the cap 60 rises. Since the portion 60 b covers the rib cutout hole 39 formed in the guide rib 38, the insertion path (the upper runner insertion cutout 57, the rib cutout hole 39) of the upper runners 21 to 23 is easily and surely closed with the cap 60. be able to. Moreover, when removing the upper runners 21 to 23, it is only necessary to remove the cap 60 and the cap receiver 61, and it is not necessary to remove the upper rail cover 51. Can do. Further, the first cutout portion for the common rail portion 7 enables insertion and removal of all the upper runners 21 to 23 of the sliding doors 1 and 2 on both the left and right sides guided by the common rail portion 7, respectively, while the central sliding door The second notch portion for the rail portion 8 for use enables insertion and removal of the two upper left and right runners 21 to 23 of the central sliding door 3 guided by the central sliding door rail portion 8. For this reason, the number of the upper runner insertion notches 57 is two in total, and it is possible to suppress the strength reduction of the upper rail cover 51 by the upper runner insertion notches 57 as much as possible. There is also an advantage that the upper runner insertion notch 57 can be formed by effectively using the area where no part exists, and the space of the upper rail cover 51 can be effectively utilized.

  11 to 13 are arranged at a branching point of a branching member 18 disposed at a branching point of the inner curved railing part 12 on the left side of the common railing part 7 and at a branching point of the curved railing part 13 on the left side of the central sliding door railing part 8. The branch member 18 is integrally formed, and the branch member 18 disposed at the branch point of the inner curved rail portion 12 on the right side of the common rail portion 7 and the right curve of the central sliding door rail portion 8 are provided. The case where the branch member 18 arrange | positioned at the branch point of the rail part 13 is formed with the integrally molded article is shown. In this example, the second auxiliary rail 18b and the fifth auxiliary rail 18e are integrated to form one branch member 18, and the fourth auxiliary rail 18d and the sixth auxiliary rail 18f are integrated. One branch member 18 is configured. Therefore, the total number of branch members 18 can be reduced, the cost can be reduced and the assemblability can be improved, and the labor for attaching the branch members 18 can be reduced, thereby reducing the construction. Can do. In addition, since the variation in construction of the branch member 18 can be eliminated, it is possible to reduce the variation in the drawing position of each of the sliding doors 1 to 3 to the center position, and to improve the traveling performance of the sliding doors 1 to 3, and to provide a high quality sliding door device. Can provide.

  FIG. 14 shows a case where the branch member 18 is fixed to the upper rail cover 51 with a screw tool 55. Incidentally, since the upper rail cover 51 has two common rail portions 7 and a central sliding door rail portion 8 formed by groove processing, the upper rail cover 51 is easily bent due to its own weight and the load of the sliding doors 1 to 3. It has a structure. Therefore, the screw-fixing bosses 65 are projected from two locations on the central branch member 18, and the screw-fixing bosses 65 are projected from one location on the both-end branch members 18. Each of the branch members 18 can be easily screwed to the upper rail cover 51 by screwing the plurality of screw tools 55 into the respective bosses 65 of the branch member 18 through the screw holes 51a to 51f of the upper rail cover 51. The bending of the upper rail cover 51 can be easily and inexpensively prevented by each branch member 18, and high quality of the upper rail cover 51 can be ensured. Further, by using the branch member 18, a dedicated reinforcing material for preventing the upper rail cover 51 from being bent becomes unnecessary, so that the strength of the upper rail cover 51 is improved while preventing an increase in the number of components. Can do.

  Here, as shown in FIG. 15A, the screwing locations of the branch member 18 with respect to the upper rail cover 51 are the inner position of the outer curved rail portion 11, the inner position of the inner curved rail portion 12, and the curvature. Each is set at an inward position of the rail portion 13. The outer curved rail part 11, the inner curved rail part 12, and the curved rail part 13 are parts that cause the upper rail cover 51 to bend (parts that are weak in strength). By using the stop portion, the cause of the bending of the upper rail cover 51 can be eliminated by the branch member 18. Specifically, as shown in FIG. 15 (d), the screw hole 51a is positioned so that the outer curved rail portion 11 is positioned at substantially the same distance d with the screw hole 51a (the same applies to 51b, 51e, 51f) as the center. On the other hand, as shown in FIG. 15 (e), the position of the screw hole 51e is such that the curved rail portion 13 is located at substantially the same distance e with the screw hole 51c (51d is the same) as the center. As a result, the same reinforcing effect can be obtained by screwing the outer curved rail portion 11, the inner curved rail portion 12, and the curved rail portion 13, and the upper rail cover 51 can be prevented from bending. The effect can be further enhanced.

  FIGS. 16 and 17 show an example in which a lower roller 41 guided by the lower rail 6 is projected from one central portion of the lower end of each sliding door 1 to 3. The roller shaft 60 of the lower roller 41 is attached to the L-shaped bracket 62 by caulking. Incidentally, the lower roller 41 in the conventional upper suspension door is mostly attached at two positions on both ends of each door. For this reason, in the sliding door device that is flat in the closed state, the lower rail 6 needs to have a curved portion having the same locus as the curved rail portion and the curved rail portion 13 of the upper rail 5, and the lower rail 6 looks like It feels uncomfortable.

  Therefore, in the example of FIG. 17, when the upper runners 21 to 23 of the sliding doors 1 to 3 enter the outer curved rail portion 11 and the inner curved rail portion 12 respectively on the lower rail 6, The left and right curved rail portions 65 for moving the lower roller 41 to the rear B are projected to the rear B from both sides in the longitudinal direction M of the lower rail 6, and the upper runners 21 to 23 of the sliding doors 1 to 3 are When entering the curved rail portion 13, one curved rail portion 66 for moving the lower roller 41 of the sliding doors 1 to 3 to the front A is caused to protrude from the center in the longitudinal direction M of the lower rail 6 to the front A. ing. Here, the position of the curved rail portion 65 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 65 is opposite 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 66 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.

  Thus, by supporting the sliding doors 1 to 3 with the left and right upper runners 21 to 23 and one lower roller 41, not only the cost of the lower roller 41 is reduced, but also the lower rail 6 is simplified. Thus, the appearance of the lower rail 6 can be improved.

  In the above-described embodiment, the case where the outer curved rail portion 11 and the inner curved rail portion 12 are respectively inclined obliquely rearward is described. Of course, the shape is not limited to obliquely rearward and is L-shaped in plan view toward the rear B. It may be bent.

  The sliding door device according to the present invention is widely applicable in the field of various opening / closing doors in addition to the closet door.

(A) is a disassembled perspective view of the upper rail and branch member of one Embodiment of this invention. The front view of a sliding door apparatus same as the above, (b) is a top view, (c) is a side view. It is a top view of an upper rail cover same as the above. (A)-(d) is a top view explaining the case where a 3 sliding door same as the above is made into a right open state from a closed state. It is explanatory drawing of the connection state of an upper rail main body and an upper rail cover same as the above. It is explanatory drawing of other embodiment of the connection state of an upper rail main body and an upper rail cover same as the above. It is explanatory drawing of the state which suspended and supported the roller block with a double auxiliary roller on the upper rail same as the above. It is a perspective view explaining the notch part for upper runner insertion provided in an upper rail cover same as the above. (A) (b) is explanatory drawing of the attachment state of the cap which covers the notch part for upper runner insertion same as the above. (A) and (b) are the top view and bottom view after attaching the cap same as the above, (c) is the top view before attaching the cap, (d) is the enlarged view of the yo part of (a), ( e) is an enlarged view of the upper portion of (b), and (f) is an enlarged view of the raised portion of (c). (A) (b) is explanatory drawing at the time of integrating two branch members same as the above. (A) (b) is a perspective view explaining the guide member for rectilinear advance provided in the integrated branch member same as the above. (A) and (b) are top views of the upper rail cover which attached the branch member same as the above. It is explanatory drawing of the state which attached the branch member same as the above to the upper rail cover. (A) is a plan view of the upper rail cover before the branch member is attached, (b) is a view of the upper rail cover after the branch member is attached, and (c) is after the branch member is attached. The top view which looked at the upper rail from the upper part, (d) is a figure explaining the distance from a screw hole to a curved rail part, (e) is the figure explaining the distance from a screw hole to a curved rail part. FIG. (A) is a side view of the same sliding door, (b) is a side view of the vicinity of the lower roller, (c) is an explanatory view of the attached state of the lower roller, and (d) is an exploded perspective view of (c). (A) is a top view of a lower rail same as the above, (b) is explanatory drawing of the closed state of a sliding door. It is a top view which shows the closed state of the conventional 3 sheet sliding door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Left sliding door 2 Right sliding door 3 Central sliding door 5 Upper rail 6 Lower rail 7 Shared rail part 8 Central sliding door rail part 9 Front side rectilinear rail part 10 Rear side rectilinear rail part 11, 12 Curved rail part 13 Curved rail part 18 Branching member 21-23 Upper runner 41 Lower roller 50 Upper rail body 51 Upper rail cover 51a Longitudinal end 52 Connection means 55 Screw tool 57 Notch for upper runner insertion

Claims (7)

  The left and right sides of the upper and lower sliding doors are arranged on the upper rail, which is movably guided on the left and right sliding doors and the central sliding door, in the longitudinal direction perpendicular to the longitudinal direction of the upper rail. A common rail part for guiding the two upper runners to run freely, and a central sliding door rail part for guiding the left and right upper runners provided at the upper end of the central sliding door are provided. Is a front rectilinear rail portion extending in parallel with the longitudinal direction of the upper rail, two left and right outer curved rail portions extending rearward from both ends in the longitudinal direction of the front rectilinear rail portion, and the length of the front rectilinear rail portion Left and right inner curved rail portions each branching from two locations closer to the inner side than both ends in the direction and extending backward, and the central sliding door rail portion is parallel to the front straight rail portion. Rear straight rail And two left and right curved rail portions 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 in the rear straight rail portion toward the front side. In the closed state, each upper runner of the left sliding door enters the respective rear end of the outer curved rail part and the inner curved rail part located on the left side, and each upper runner of the central sliding door has two curved rails on the left and right The upper runners of the right sliding doors enter the rear ends of the outer curved rail part and the inner curved rail part located on the right side, respectively, so that each sliding door becomes the longitudinal length of the upper rail. Arranged in the same plane parallel to the direction, and in the open state, each sliding door is configured to be juxtaposed in the front and back at either the right end or the left end of the upper rail. Curvature A branch member is provided at each branch point of the rail portion and the curved rail portion to determine whether the sliding door travels in a straight line or a curved direction, and the upper rail is fixed to the housing. The upper rail body is divided into a rail body and an upper rail cover having a common rail portion and a central sliding door rail portion, and the branch members are stored between the upper rail body and the upper rail cover. And an upper rail cover are connected by a connecting means.   To insert the upper runner of the sliding door from the lower side of the upper rail cover at a position closer to the inner side than the longitudinal end of the upper rail cover so that it can be taken in and out of either the common rail portion or the central sliding door rail portion. The sliding door device according to claim 1, wherein a notch for inserting an upper runner is formed.   The sliding door device according to claim 2, wherein the upper runner insertion notch is formed at an intermediate position between the common rail portion and the central sliding door rail portion and in an area where the rail portion does not exist.   A branch member disposed at the branch point of the left inner curved rail portion of the common rail portion and a branch member disposed at the branch point of the left curved rail portion of the central sliding door rail portion are integrally formed. In addition, the branch member disposed at the branch point of the inner curved rail portion on the right side of the common rail portion and the branch member disposed at the branch point of the right curved rail portion of the central sliding door rail portion are integrally formed. The sliding door device according to claim 1, wherein:   The sliding door device according to claim 4, wherein the branch member is fixed to the upper rail cover with a screw tool.   Set the screwing location of the branching member to the upper rail cover at the position near the outer curved rail part of the common rail part, the position near the inner curved rail part, and the position near the curved rail part of the central sliding door rail part. The sliding door device according to claim 5, wherein   The sliding door device according to any one of claims 1 to 6, wherein a lower roller guided by the lower rail is projected from one place at a lower central portion of each sliding door.

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