JP4329751B2 - Sliding door device - Google Patents

Description

  The present invention relates to a sliding door device, and more particularly to a sliding door device in which the sliding doors are flush with each other in a closed state.

  Conventionally, a sliding door device having three sliding doors is known, and a general sliding door device is a sliding type in which each sliding door moves straight in parallel to be in a closed state and a right-open state or a left-open state. ing.

  However, in the above three sliding doors, in the closed state, each sliding door has a stepped shape from the front side to the rear side, so that not only the appearance is bad, but each sliding door has a longitudinal direction perpendicular to the longitudinal direction of the upper rail. There is also a restriction that the degree of freedom of construction is small, such as the necessity of arranging three rail portions side by side, and the need to increase the overall expected dimension (depth) of the upper rail.

  For example, in Patent Document 1, it is known from Patent Document 2 that two sliding doors are continuous with each other in a fully closed state, and two sliding doors overlap each other in a fully opened state. Is not a three-sliding door.

  Therefore, the present inventors previously invented a sliding door device having the following three sliding doors. This sliding door device is composed of a central sliding door located in the center in a closed state, a one sliding door disposed on one side of the central sliding door, and another sliding door disposed on the other side of the central sliding door. is there. In this sliding door device, the three sliding doors are arranged so as to be flush with each other in the closed state, and the other sliding door of the three sliding doors in the closed state is moved toward the one sliding door. In this case, a guiding mechanism is provided for guiding the other sliding door so as to overlap with the one sliding door and guiding the central sliding door so as to overlap after the one sliding door when the central sliding door is moved toward the one sliding door. Further, when the other sliding door is moved toward the one sliding door from the above-mentioned closed state, an interlocking mechanism is provided for opening and closing the central sliding door following the other sliding door.

  Here, the interlocking mechanism shown in FIG. 28 was adopted. This interlocking mechanism includes hook-like hooks 40 as engagement members protruding rearward from the upper ends of the one sliding door 1a and the other sliding door, and portions projecting rearward from the upper ends on both sides of the central sliding door 1c. It is comprised with the pin 41 which protruded upwards from each. And, for example, when the other sliding door is moved to the one sliding door 1a side from the fully closed state where the three sliding doors are flush with each other, the pin 41 is moved to the front portion of the hook 40 when the other sliding door and the central sliding door 1c substantially overlap. Then, the pin 41 is moved to the rear end side while being guided by the hook 40, and then the pin 41 is hooked at the stage where the other sliding door and the central sliding door 1c are separated from each other with the one sliding door 1a therebetween. Thus, the central sliding door 1c moves to the one sliding door 1a side in conjunction with the other sliding door by the engagement of the hook 40 of the other sliding door and the pin 41 of the central sliding door 1c.

  By the way, the pin 41 in the interlocking mechanism is provided at a portion protruding rearward from the other sliding door. Therefore, in order to engage the hook 40 with the pin 41, the amount of protrusion of the hook 40 rearward from the other sliding door is set to the central sliding door. It is necessary to make it larger than the thickness of 1c. The hook 40 serves as a guide for the pin 41 when the other sliding door and the central sliding door 1c are separated from each other in the front-rear direction. It will be. However, when the amount of protrusion of the hook 40 to the rear side is large as described above, the hook 40 may be caught on a storage item such as a futon stored behind the three-sliding door.

The hook 40 is disposed above the central sliding door 1c so as not to interfere with the central sliding door 1c. To increase the vertical engagement length between the hook 40 and the pin 41, the pin 41 is moved to the central sliding door 1c. It is necessary to make it protrude largely upwards. However, if the amount of protrusion upward of the pin 41 is increased, the gap between the sliding door and the upper rail is increased and the appearance is deteriorated. Therefore, in this interlocking mechanism, the hook 40 and the pin 41 in the vertical engagement length are lengthened. There is also a problem that it cannot be done.
Japanese Utility Model Publication No. 51-103524

  The present invention has been invented in view of the above-mentioned conventional problems, and in a fully closed state, can have a wall-like appearance in which three sliding doors are lined up in a row, and from the central sliding door to the rear. The protruding amount of the protruding engaging member can be reduced to prevent the engaging member from being hooked on the stored item behind the sliding door, and when the other sliding door is linked to the central sliding door, the engaging member is moved vertically to the central sliding door. It is an object of the present invention to provide a sliding door device that can increase the engagement length of the sliding door device and that can securely and firmly engage the engaging member with the central sliding door.

  In order to solve the above-mentioned problem, the sliding door device according to the present invention is a sliding door device including three or more sliding doors 1, and the three sliding doors 1 a to 1 c that are continuously adjacent to each other in the closed state are located in the center. The central sliding door 1c, the one sliding door 1a disposed 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, the three sliding doors 1a to 1c. Is arranged so that it is flush with the closed state, and when the other sliding door 1b is moved toward the sliding door 1a in the three sliding doors 1a to 1c that are flush with the other, A guiding mechanism 19 is provided that guides the sliding door 1b so as to overlap before the one sliding door 1a, and guides the central sliding door 1c so as to overlap after the one sliding door 1a when the central sliding door 1c is moved to the one sliding door 1a side, Move the other sliding door 1b from the closed state When moving toward the sliding door 1a side, an interlocking mechanism 15 for opening and closing the central sliding door 1c following the other sliding door 1b is provided, and the interlocking mechanism 15 is long before and after being formed on the upper end surface of the central sliding door 1c. An engaging groove 33c and an engaging member 35 that protrudes rearward from the upper end of the other sliding door 1b and engages with the engaging groove 33c; An engaging portion 35d that is movable along the engaging groove 33c while being engaged with the engaging groove 33c is provided, and a protruding portion insertion opening that opens to the side of the other sliding door 1b at the rear end portion of the engaging groove 33c. When the other sliding door 1b is moved toward the one sliding door 1a from the state where the other sliding door 1b is moved to the one sliding door 1a side, the engaging portion 35d is engaged with the engaging groove at a stage where the other sliding door 1b and the central sliding door 1c substantially overlap. 33c is inserted into the engaging groove 33c from the protrusion insertion port 33d. It is configured so that it can be engaged with the front end portion of the engagement groove 33c when it is engaged with the mating groove 33c and the other sliding door 1b and the central sliding door 1c are separated forward and backward. is there.

  As described above, the three sliding doors 1 are arranged so as to be flush with each other in a closed state, so that the three sliding doors 1 are closed and adjacent to each other. There is no difference in level, and the appearance as a series of continuous wall surfaces can be exhibited. In addition, two sliding doors 1 are opened with three sliding doors 1 stacked in front and back. Can be. Further, the interlocking mechanism 15 eliminates the need to manually open and close the central sliding door 1c, and the opening / closing operation becomes extremely easy. Further, when forming the engaging groove 33c constituting the interlocking mechanism 15, the engaging groove 33c is formed on the upper end surface of the central sliding door 1c, so that the front portion of the engaging groove 33c is formed within the thickness range of the sliding door body 30. It is possible to reduce the amount of rearward engagement of the engagement member 35 from the other sliding door 1b. Therefore, the stored items such as the futons stored behind the three sliding doors 1a to 1c may jump forward, but even if the other sliding door 1b is opened and closed in this case, the engagement projects backward from the other sliding door 1b. It is difficult for the member 35 to be caught on a storage item such as a futon. Further, since the engaging portion 35d that engages with the engaging groove 33c protrudes downward from the engaging member 35, a sufficient length in the vertical direction for engaging the engaging portion 35d and the engaging groove 33c is sufficiently secured. In addition, the gap formed above the sliding door 1 can be reduced, and the appearance is good.

  The engaging member 35 includes a horizontal piece portion 35b protruding rearward from the upper end of the other sliding door 1b, and an engaging portion 35d protruding downward from the rear end portion of the horizontal piece portion 35b. It is also preferable to arrange the lower surface above the central sliding door 1c and at the same level as the upper end surface of the other sliding door 1b. When the other sliding door 1b is moved to the one sliding door 1a, the lateral piece 35b of the engaging member 35 does not interfere with the central sliding door 1c. In addition, the gap formed above the sliding door 1 can be further reduced.

  It is also preferable to provide a receiving member (end cap 33 in the embodiment) having the engaging groove 33c formed on the upper surface, and to fit the receiving member into a recess formed in the upper end surface of the central sliding door 1c. The engaging groove 33c can be formed simply by fitting the receiving member into the recess of the central sliding door 1c.

  The central sliding door 1c includes a sliding door main body 30 and a long vertical edge member 31 provided on a side edge of the sliding door main body 30, and an engagement groove 33c may be formed on the upper end surface of the vertical edge member 31. preferable. The engagement groove 33 c can be formed simply by attaching the vertical edge member 31 to the sliding door body 30.

  The central sliding door 1 c includes a sliding door main body 30 and a long vertical edge member 31 provided on a side edge of the sliding door main body 30, and the vertical edge member 31 is a hollow and long provided on the side edge of the sliding door main body 30. It is also preferable that a long edge member body 32 and an end cap 33 fitted in a recess formed by an upper end opening of the edge member body 32 are provided, and the engagement groove 33 c is formed on the upper surface of the end cap 33. The engagement groove 33 c can be formed simply by attaching the vertical edge member 31 to the sliding door body 30. Further, since the engaging groove 33c is formed in the end cap 33 of the vertical edge member 31, it is not necessary to separately provide a member for forming the engaging groove 33c, and the number of members can be reduced.

  The engaging groove 33c is preferably a groove that is smoothly curved so that the rear end side is located on the other side of the other sliding door 1b. The engaging portion 35d can be smoothly moved into the engaging groove 33c.

  In the present invention, it is possible to provide a wall-like appearance in which three sliding doors are arranged in a row in a fully closed state. Moreover, the amount of protrusion of the engaging member protruding rearward from the central sliding door can be reduced, and the engaging member can be prevented from being caught on the stored item or the like behind the sliding door. Moreover, when the other sliding door and the central sliding door are interlocked, the engagement length of the engaging member in the vertical direction with respect to the central sliding door can be increased, and the engaging member can be securely and firmly engaged with the central sliding door.

  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 FIGS. 1 to 6, and is disposed on one side of the central sliding door 1c and the central sliding door 1c located in the center in the closed state. The three sliding doors 1a and the other sliding door 1b arranged on the other side of the central sliding door 1c are arranged in the closed state as shown in FIG. 1 (a), FIG. 2 (a), and FIG. The sliding doors 1 are not only arranged in a row, but are arranged so that the entire three sheets are flush with each other. Therefore, for example, when used as a closet door, the three sliding doors 1 can have an appearance as a series of walls that are flush with each other without a step, and the appearance is good.

  In the following description, when the three sliding doors 1 are closed so as to be flush with each other, the sliding door 1 located on the right side when viewed from the front (interior X) as shown in FIG. The sliding door 1 located on the left side will be described as the other sliding door 1b. In the following description, the left side refers to the direction where the one sliding door 1a is located when viewed from the front in the fully closed state, and the right side refers to the direction where the other sliding door 1b is located in the fully closed state. Since FIG. 1 is a bottom view of the upper rail 5 viewed from below, the drawing is made so that the left and right sides are reversed from the plan view shown in FIG. 3 is a perspective view as viewed from the storage space Y. Therefore, when the three sliding doors 1 are closed so as to be flush with each other, one sliding door 1a is located on the left side and the other sliding door 1b is located on the right side in the drawing. It is drawn as follows. Similarly, in FIG. 4 to FIG. 6, the left and right sides are plotted opposite to the case seen from the front.

  Each of the sliding doors 1 in this example has substantially the same thickness, width, and height dimensions. As shown in FIG. 22B, each of the sliding doors 1a to 1c is made of a wooden sliding door main body 30. , And a long vertical edge member 31 provided on both side edges of the sliding door main body 30.

  Each of the vertical edge members 31 of the sliding doors 1a to 1c includes a long hollow cylindrical edge member body 32 that is an extruded product of a light metal such as aluminum, and an end cap 33 that closes the upper end surface of the edge member body 32. It has.

  The front and rear edges of the side edges of the edge body 32 are provided with holding pieces 32a that protrude outwards over the entire length in the vertical direction, and fitting grooves 32b that open outwardly between the front and rear holding pieces 32a. Forming. The edge material main body 32 is attached to the sliding door main body 30 in a state where the side end of the sliding door main body 30 is fitted in the fitting groove 32b.

  The end cap 33 includes a fitting portion 33a and a protruding portion 33b that protrudes rearward from the fitting portion 33a. The end cap 33 is fitted into a recess that opens upwardly with the fitting portion 33 a formed by the upper end portion of the rim body main body 32, and the projecting portion 33 b opens upward formed at the upper end of the rear surface portion of the rim material main body 32. The rim material main body 32 is fixed to the rim material main body 32 by a fixing tool 34a such as a screw in a state of protruding rearward from the rim material main body 32 through a notch (not shown).

  On the other hand, the vertical edge member 31 on the right side of the sliding door 1a and the vertical edge member 31 on the left side of the other sliding door 1b form a finger hook portion 32g by denting the center of the front surface of the edge member body 32 rearward. Further, the vertical edge member 31 on the left side of the one sliding door 1a and the vertical edge member 31 on the right side of the other sliding door 1b form a finger hook portion 32g protruding outward from the rear portion at the front portion of the edge member main body 32. Further, the vertical edge members 31 on both the left and right sides of the central sliding door 1c are formed with concave step portions 32e recessed behind the front surface of the sliding door body 30 on the front surface of the outer half of the edge material body 32, and the three sliding doors 1a. In a state in which ˜1c is closed flush, the finger hook portion 32g of the vertical edge member 31 of the one sliding door 1a and the other sliding door 1b is arranged on the concave step portion 32e, and the outer end portion of the vertical edge member 31 of the central sliding door 1c It is located in front of and overlaps. Each vertical edge member 31 of each of the sliding doors 1a to 1c can open and close the sliding doors 1a to 1c by placing fingers on the finger hooking portion 32g and the concave stepped portion 32e, and also serves as a handle.

  When the three sliding doors 1 are moved from the other sliding door 1b side to the one sliding door 1a side and opened, the other sliding door 1b is guided to the front A (inside the room X) of the one sliding door 1a and the central sliding door 1c is moved to one side. When the sliding door 1a is guided to the rear B (storage space Y side) and moved from the one sliding door 1a side to the other sliding door 1b side to open, the one sliding door 1a is moved forward A (inside the room X side) of the other sliding door 1b. And the guiding mechanism 19 for guiding the central sliding door 1c to the rear B (storage space Y side) of the other sliding door 1b, and the operation force on the other sliding door 1b side is transmitted to the central sliding door 1c, and the central sliding door 1c is transferred to the other side. An interlocking mechanism 15 is provided for following the sliding door 1b to open and close, and transmitting 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.

  First, the guide mechanism 19 will be described.

  The guide mechanism 19 includes upper runners 21 to 23 that are respectively attached to the upper part of the sliding door 1, lower rollers 27 that are respectively attached to the lower part of the sliding door 1, and doors that guide the upper runners 21 to 23 and the lower roller 27 so that they can run freely. The upper and lower rails 5 and 6 provided on the frame 4 are configured.

  The door frame 4 is a rectangular frame that is attached to an opening for attaching the three sliding doors 1 so as to be freely opened and closed, and is composed of upper and lower rails 5 and 6 and a left and right vertical frame 4a. FIGS. 3 to 6 show a state in which the upper rail 5 is omitted, and FIGS. 1 and 7 to 10 show a bottom view of the upper rail 5 viewed from below, a perspective view viewed from below, and a bottom view, respectively. An exploded perspective view is shown.

  The upper runners 21 to 23 are attached to both ends in the left-right direction of the upper end of the rear surface of the sliding door 1 via reverse L-shaped metal fittings 28 as shown in FIGS. 21-23 are located in the back of the upper end part of the sliding door 1, and when the upper runners 21-23 are attached to the upper rail 5 mentioned later so that driving | running | working is possible, from the driving | running | working support part of the upper rail 5 by the upper runners 21-23. The sliding door 1 is suspended by shifting forward.

  As shown in FIGS. 7 to 10, the upper rail 5 includes an upper rail body 50 that is fixed to the housing and an upper rail cover 51 that is attached to the lower surface side of the upper rail body 50. The upper rail cover 51 is disposed at the left and right and middle portions in the longitudinal direction and is fixed to the upper rail body 50 by screws, and the upper rail cover 51 is disposed at the outer end of the left and right main upper rail covers 51a. A plate-like sub upper rail cover 51b fixed to the cover 51a by screws and a branch member 18 disposed between the adjacent main upper rail cover 51a and fixed to the main upper rail cover 51a or the upper rail body 50 described later. It is composed of a plate-like sub upper rail cover 51b which is fixed by screws.

  As shown in FIGS. 9A and 10B, the upper rail 5 has a groove-shaped shared rail portion 7 and a groove arranged in the front-rear directions A and B orthogonal to the longitudinal direction M of the upper rail 5. A central sliding door rail portion 8 is juxtaposed. The common rail portion 7 on the front side guides the two left and right upper runners 21 and 22 provided at the two ends of each upper end of the one sliding door 1a and the other sliding door 1a and 1b, respectively, so that it can run freely. 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. An end straight rail portion 14 parallel to the front rectilinear rail portion 9 is continuously provided at the front ends of the two left and right outer curved rail portions 11 and the two left and right inner curved rail portions 12.

  By guiding the three sliding doors 1 with these two rail parts (common rail part 7, central sliding door rail part 8), it becomes possible to reduce the expected dimension K (FIG. 17) of the entire upper rail 5, For example, when used as a closet door, the amount of storage can be increased, and even if load collapse occurs in the closet, for example, the one sliding door 1a can be moved from the closed state to the other sliding door 1b side. It is possible to move forward along the outer curved rail portion 11 and the inner curved rail portion 12 and move in the opening direction (the other sliding door 1b side) along the front straight rail portion 9 to open.

  In addition, the central sliding door rail portion 8 has a rear straight traveling rail portion 10 parallel to the front straight traveling rail portion 9 and a position facing the left and right inner curved rail portions 12 in the rear straight traveling 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.

  An end straight rail portion 14 extending to the rear end portions of the left and right outer curved rail portions 11 provided in the common rail portion 7 and a rear end portion of the two left and right inner curved rail portions 12 are connected. The extended end straight rail portion 14 and the front end portions of the left and right curved rail portions 13 in the central sliding door rail portion 8 are on a virtual straight line parallel to the front straight rail portion 9 and the rear straight rail portion 10. positioned. Further, the end linear rail portion 14 that is continuous with the rear end portion of the left inner curved rail portion 12 and the front end portion of the end linear rail portion 14 that is continuous with the rear end portion of the left outer curved rail portion 11. Is equal to the distance between the left and right upper runners 22 of the left sliding door 1 (i.e., the other sliding door 1b), and is connected to the rear end of the right outer curved rail portion 11. The distance between the straight rail portion 14 and the tip end portion of the straight straight rail portion 14 extending to the rear end 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). It is equal to the distance between the upper runners 21, and the distance between the front ends 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, each upper runner 22 of the other sliding door 1b shown in FIG. 1 (a) is an end projecting from each rear end portion of the outer curved rail portion 11 and the inner curved rail portion 12 located on the left side. Each of the upper runners 23 of the central 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 sliding door 1a is located on the right side. The sliding doors 1 are in the same plane parallel to the longitudinal direction M of the upper rail 5 by entering the end straight rail portions 14 extending from the rear end portions of the advance rail portion 11 and the inner curved rail portion 12 respectively. (I.e., three sliding doors 1 are arranged flush with each other).

  On the other hand, in the left-opened state of FIG. 15, as shown in FIG. 1C, the upper runners 21 of the one-side sliding door 1 a are from the rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 positioned on the right side. The left and right upper runners 23 of the central sliding door 1c move to the rear rectilinear rail portion 10 (in this case, the left upper runner 23 moves to the right side of the rear rectilinear rail portion 10). Each upper runner 22 of the other sliding door 1b moves to the right side of the front straight rail 9 so that the other sliding door 1b, the one sliding door 1a, and the central sliding door 1c are stacked in parallel. Is done.

  Further, in the right-open state of FIG. 16, the end straight rail portions that are extended from the rear end portions of the outer curved rail portion 11 and the inner curved rail portion 12 in which the upper runners 22 of the other sliding door 1b are located on the left side. 14, the left and right upper runners 23 of the central sliding door 1 c move to the rear straight rail portion 10 (in this case, the left upper runner 23 moves to the left end of the rear straight rail portion 10), And each upper runner 21 of the one sliding door 1a moves to the left side of the front-side straight-ahead rail part 9, respectively, so that the one sliding door 1a, the other sliding door 1b, and the central sliding door 1c are stacked in parallel from the front.

  These left open state and right 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 one sliding door 1a in a state where the other sliding door 1b, the central sliding door 1c, and the one sliding door 1a overlap each other, and is flush with the one sliding door 1a. The other sliding door 1b is also moved to a position where it does not overlap with the one sliding door 1a and the central sliding door 1c, and serves to guide the other sliding door 1b so as to be flush with the central sliding door 1c.

  On the other hand, upper runners 21 (or upper runners 22 or upper runners 23) are provided on the left and right sides of the upper surface of each sliding door 1, respectively. As shown in FIGS. 11 to 14, the upper runners 21 to 23 include a roller block 24 having a pair of upper rollers 26 and a plurality of auxiliary rollers 25 a (or an auxiliary roller) protruding upward from the upper surface of the roller block 24. And a roller 25b). The auxiliary roller 25a (or the auxiliary roller 25b) is guided by the branching member 18 shown in FIG. 7, FIG. 9 (b), FIG. 10 (c), and FIG. .

  Here, as shown in FIG. 11 to FIG. 14 and FIG. 17, the upper runners 21 (or the upper runners 22) provided at the respective right end portions when viewed from the front (the room X) of the one sliding door 1 a and the other sliding door 1 b. Four auxiliary rollers 25a each having a low height at a position shifted to the rear side of the upper surface and a position shifted to the front side (two in the moving direction at the position shifted backward, and at the position shifted in the forward direction in the moving direction) 2 pieces in total, 4 pieces projecting upward, and the front side of the upper surface of the upper runner 21 (or the upper runner 22) provided at each left end of the one sliding door 1a and the other sliding door 1b. Two auxiliary rollers 25b having a high height project upward from the position shifted to the rear, and shifted to the rear side of the upper surface of the upper runner 23 provided at the right end of the central sliding door 1c. It is composed of two auxiliary rollers 25b that are high in position. The double auxiliary roller 25b protrudes upward, and is high at a position shifted to the front side of the upper surface of the upper runner 23 provided at the left end of the central sliding door 1c and a position shifted backward. Four low-sized auxiliary rollers 25a (two in the moving direction at positions shifted backward and two in the moving direction at positions shifted forward) are projected upward. .

  The branch member 18 is attached to the lower surface portion of the upper rail main body 50 by screw fixing. Each branch point of the outer curved rail portion 11, the inner curved rail portion 12, and the curved rail portion 13 shown in FIGS. Are provided with auxiliary rail blocks 18a to 18f (an enlarged perspective view is shown in FIG. 8) opened downward. 7 to 10, the auxiliary rail block 18a is disposed at a position corresponding to the right outer curved rail portion 11 and is attached to the lower surface portion of the upper rail body 50, and the auxiliary rail block 18b is arranged on the right inner side. It is arranged at a position corresponding to the curved rail portion 12 and is attached to the lower surface portion of the upper rail body 50, and the auxiliary rail block 18c is arranged at a position corresponding to the left outer curved rail portion 11. The auxiliary rail block 18d is disposed at a position corresponding to the left inner curved rail portion 12 and is attached to the lower surface portion of the upper rail body 50. The auxiliary rail block 18e is arranged at a position corresponding to the curved rail portion 13 on the right side, and is attached to the lower surface portion of the upper rail body 50. The auxiliary rail block 18f It is attached to the lower surface of the upper rail body 50 each other and disposed at a position corresponding to the left side of the curved rail portion 13.

  The auxiliary rail block 18a is for guiding the auxiliary roller 25a having a low height, and as shown in FIG. 8A, a groove opened downward along the rear side of the right outer curved rail portion 11. And a curved guide rail portion 18a1. Of the four low auxiliary rollers 25a provided on the upper surface of the upper runner 21 provided at the right end of the one sliding door 1a from the opening at one end of the curved guide rail portion 18a1, the position is shifted rearward. By inserting the two auxiliary rollers 25a, the upper runner 21 of the one sliding door 1a is introduced along the outer curved rail portion 11 on the right side. In this case, the two auxiliary rollers 25a at the position shifted in the front direction among the four low auxiliary rollers 25a provided on the upper surface of the upper runner 21 are the curved guides on the lower surface of the auxiliary rail block 18a. It is configured to pass below a stepped portion 18a2 that is recessed upward from the lower end of the rail portion 18a1.

  The auxiliary rail block 18b guides the four auxiliary rollers 25a having a low height and the four auxiliary rollers 25a to advance straight, and guides the two auxiliary rollers 25b having a high height to bend. As shown in FIG. 8B, groove-shaped front and rear linear guide rail portions 18b1 and 18b2 opened downward and groove-shaped curved guide rail portions 18b3 opened downward are provided. The left half of the front linear guide rail portion 18b1 also serves as the left half of the curved guide rail portion 18b3, and the intermediate portion inclined in plan view of the curved guide rail portion 18b3 is the rear straight guide rail. Crossing the part 18b2, the middle part and the right half part of the curved guide rail part 18b3 are arranged along the front side of the right inner curved rail part 12.

  Here, as shown in FIG. 8B, the straight guide rail portions 18b1 and 18b2 and the curved guide rail portion 18b3 are at the same height, but the curved guide rail portion 18b3 is high. The groove depth is deep so that the high auxiliary roller 25b can be guided (the dent depth is deep upward), and the left half of the front straight guide rail portion 18b1 is a curved guide rail portion. Since the left half portion of 18b3 is also used, the groove depth is deep, but the right half portion has a shallow groove depth (the depth of the upward recess is shallow). Further, the rear straight guide rail portion 18b2 has a deep groove depth at the portion where the intermediate portion of the curved guide rail portion 18b3 crosses, and the other portion has a shallow groove depth, and these groove depths are shallow. The groove bottom (upper bottom) of the portion is set to be lower than the upper end of the high auxiliary roller 25b. Accordingly, as shown in FIG. 19 (b), the high auxiliary roller 25b that enters the left half of the straight guide rail 18b1 that also serves as the front half of the curved guide rail 18b3 is formed on the straight guide rail 18b1. It cannot move to the right half part side but goes to the middle part of the curved guide rail part 18b3, and when passing through the middle part, it cannot move to the rear straight guide rail part 18b2 side, and smoothly guides to the latter half part. Is done. Moreover, as shown to Fig.19 (a), the front rectilinear guide rail part 18b1 is four low heights provided in the upper surface of the upper runner 21 attached to each right side edge part of the one sliding door 1a and the other sliding door 1b. The auxiliary rollers 25a on the front side of the auxiliary rollers 25a are guided so as to advance straight, and the rearward guide rail portion 18b2 is provided at the right end of each of the one sliding door 1a and the other sliding door 1b. Among the four low-height auxiliary rollers 25a provided on the upper surface of the upper runner 21 attached to the upper runner 21, the rear two low-height auxiliary rollers 25a are guided so as to go straight.

  By the way, the four auxiliary rollers 25a, which are provided on the upper surface of the upper runner 21 attached to the right end portions of the one sliding door 1a and the other sliding door 1b, have four auxiliary rollers 25a on the front, rear, left and right, which are curved guide rails. The portion 18b3 is not crossed at the same time, and at least one auxiliary roller 25a at the front and rear is a front straight line when any low auxiliary roller 25a crosses the intersection with the bending guide rail portion 18b3. It is located in the guide rail portion 18b1 and the rear straight guide rail portion 18b2, and is configured to go straight without swinging when passing through the intersection.

  The auxiliary rail block 18c is for guiding the high auxiliary roller 25b, and as shown in FIG. 8 (f), a groove opened downward along the front side of the left outer curved rail portion 11. It has a groove-shaped curved guide rail portion 18c1 having a deep depth (a deep dent depth). Two high auxiliary rollers 25b provided to be offset from the opening of one end of the curved guide rail portion 18c1 to the front side of the upper surface of the upper runner 22 attached to the left end of the other sliding door 1b are inserted. Thus, the upper runner 22 of the other sliding door 1b is introduced along the left outer curved rail portion 11.

  In addition, the auxiliary rail block 18d guides the two auxiliary rollers 25b offset toward the front side with a high height so that the auxiliary rail block 18d moves straight, and guides the four auxiliary rollers 25a with a low height on the front side so as to bend. As shown in FIG. 8 (e), a groove-shaped bending guide having both ends and a groove-shaped linear guide rail portion 18d1 opened downward is provided on the front side, and one end is opened and opened downward. The rail portion 18d2 is provided on the rear side, and the curved guide rail portion 18d2 is disposed along the rear side of the left inner curved rail portion 12.

  Here, as shown in FIG. 8E, the curved guide rail portion 18d2 is formed so as to protrude downward from the lower end of the linear guide rail portion 18d1, and the lower end of the curved guide rail portion 18d2 has a height. It is located above the upper end of the low auxiliary roller 25a. As shown in FIG. 21 (b), the straight guide rail portion 18d1 is provided with a high height offset toward the front side of the upper surfaces of the upper runners 21 and 22 attached to the left side ends of the other sliding door 1b and the one sliding door 1a. The roller 25b is inserted to guide the upper runners 21 and 22 attached to the left side ends of the other sliding door 1b and the one sliding door 1a so as to run in a straight line. Further, as shown in FIG. 21A, the bending guide rail portion 18d2 has two low height auxiliary members provided on the rear side of the upper surface of the upper runner 22 attached to the right end of the other sliding door 1b. By inserting the roller 25b, the upper runner 22 of the other sliding door 1b is introduced along the left inner curved rail portion 12. In this case, the upper runner 22 is attached to the right end of the other sliding door 1b. The two auxiliary rollers 25b having a low height, which are offset toward the front side of the upper surface of the runner 22, are provided on a stepped portion 18d3 that is recessed above the lower end of the curved guide rail portion 18d2 on the lower surface portion of the auxiliary rail block 18d. It is configured to pass below. Since the lower end of the straight guide rail portion 18d1 is open to the upper bottom of the stepped portion 18d3, the low auxiliary roller 25a does not enter the straight guide rail portion 18d1.

  Further, the auxiliary rail block 18e guides the four auxiliary rollers 25a having a low height provided on the upper surface of the upper runner 23 attached to the right side of the central sliding door 1c so as to go straight and the upper runner 23 attached to the left side. As shown in FIG. 8 (c), the two auxiliary rollers 25b having a high height provided on the upper surface of the upper and lower rows are formed in two groove-like front and rear rows opened at both ends and below. Linear guide rail portions 18e1 and 18e2 and groove-shaped curved guide rail portions 18e3 that are open at both ends and downward in the shape of an arc. The rear straight guide rail portion 18e2 has a left side portion and a right side portion that are also used as the left side portion and the right side portion of the curved guide rail portion 18e3, respectively. Further, both ends of the arcuate intermediate portion of the curved guide rail portion 18e3. Each of the portions inclined in plan view crosses the front straight guide rail portion 18e2, and an intermediate portion of the bending guide rail portion 18e3 is disposed along the front side of the curved rail portion 13.

  Here, as shown in FIG. 8C, the straight guide rail portions 18e1 and 18e2 and the curved guide rail portion 18e3 are at the same height, but the curved guide rail portion 18e3 has a height. The depth of the groove is deep so that the auxiliary roller 25b having a high height can be guided (the depth of the dent is deep upward), and the right and left sides of the rear straight guide rail portion 18e1 are curved guide rails. Since the right side portion and the left side portion of the portion 18e3 are also used, the groove depth is deep, but the intermediate portion of the linear guide rail portion 18e1 has a shallow groove depth (a shallow dent depth is shallow). Further, the front linear guide rail portion 18e2 has a deep groove depth at the portion where both ends of the intermediate portion of the curved guide rail portion 18e3 cross, and the other portion has a shallow groove depth. The shallow groove bottom (upper bottom) is set to be lower than the upper end of the high auxiliary roller 25b. Accordingly, as shown in FIG. 19 (d), the auxiliary roller 25b having a high height that enters the left side or the right side of the straight guide rail 18e1 that also serves as the front and rear sides of the curved guide rail 18e3. Cannot move to the middle part of the straight guide rail part 18e1 but goes to the middle part of the curved guide rail part 18e3. In this case, when passing further through the intermediate portion, it cannot move to the previous straight guide rail portion 18e2 side, and is smoothly guided to the intermediate portion. Further, as shown in FIG. 19 (c), the rear straight guide rail portion 18e1 is the rear of the four low auxiliary rollers 25a provided on the upper surface of the upper runner 23 attached to the right end of the central sliding door 1c. The two low-side auxiliary rollers 25a are guided so as to go straight, and the front straight guide rail portion 18e2 is provided on the upper surface of the upper runner 21 attached to the right end of the central sliding door 1c. Among the four low auxiliary rollers 25a, the front two low auxiliary rollers 25a are guided so as to go straight.

  By the way, the four low auxiliary rollers 25a provided on the upper surface of the upper runner 21 attached to the right end of the central sliding door 1c have four auxiliary rollers 25a on the front, rear, left and right that simultaneously traverse the curved guide rail portion 18e3. When one of the auxiliary rollers 25a having a low height crosses the intersection with the curved guide rail portion 18e3, at least one auxiliary roller 25a at the front and rear is provided with the front linear guide rail portion 18e2, It is located in the rear straight guide rail portion 18e1 and is configured to go straight without swinging when passing through the intersection.

  Also, the auxiliary rail block 18f guides the two auxiliary rollers 25b, which are provided on the upper surface of the upper runner 23 attached to the left side of the central sliding door 1c and offset to the rear side, to move straight, and is attached to the right side. The upper and lower auxiliary rollers 25a provided on the upper surface of the upper runner 23 are guided so as to bend and open at both ends and below as shown in FIG. 8 (d). A groove-shaped linear guide rail portion 18f1 is provided on the rear side, and an arcuate groove-shaped curved guide rail portion 18f2 having both ends open and opened downward is provided on the front side, and the linear guide rail portion 18f1. Are arranged along the rear side of the rear straight rail portion 10, and the curved guide rail portion 18 d 2 is arranged along the front side of the left curved rail portion 13.

  Here, the bending guide rail portion 18f2 is formed so as to protrude downward from the lower end of the linear guide rail portion 18f1, and the lower end of the bending guide rail portion 18f2 is higher than the upper end of the auxiliary roller 25a having a low height. positioned. As shown in FIG. 20, a high-height auxiliary roller 25 b provided to be offset toward the rear side of the upper surface of the upper runner 23 attached to the left end of the central sliding door 1 c is inserted into the linear guide rail portion 18 f 1. Thus, the upper runner 23 attached to the right end of the central sliding door 1c is guided so as to travel linearly. Also, as shown in FIG. 20, the curved guide rail portion 18f2 has two low-height auxiliary rollers 25b provided on the front side of the upper surface of the upper runner 22 attached to the right end of the central sliding door 1c. By being inserted, the upper runner 23 attached to the right side of the central sliding door 1c is introduced along the curved rail portion 13 on the right side. In this case, the upper runner attached to the right end of the central sliding door 1c. The two auxiliary rollers 25b having a low height and provided on the rear side of the upper surface of the upper surface 22 are provided on the lower portion 18f3 of the lower surface of the auxiliary rail block 18f that is recessed above the lower end of the curved guide rail portion 18d2. It is configured to pass below. Since the lower end of the straight guide rail portion 18f1 is open to the upper bottom of the stepped portion 18f3, the auxiliary roller 25a having a low height does not enter the straight guide rail portion 18f1.

  Note that a lower roller 27 protrudes from one central portion of the lower end of each sliding door 1. The lower roller 27 is attached to the center position of each lower end of the sliding doors 1 to 3 via an L-shaped bracket (not shown). As shown in FIGS. 2 to 6, the lower rail 6 that guides the lower roller 27 has 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 101. Are provided, and a lower end straight rail portion 45 parallel to the common rail portion 101 is continuously provided from the end portions of the curved rail portions 42 and 43. One curved rail portion 44 that is curved in a semicircular shape toward the front A from the central portion of the central sliding door rail portion 102 that is parallel to the shared rail portion 101 and located on the rear side is provided.

  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 44 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), while the three sliding doors 1 are flush with each other and closed, the lower roller 27 of the sliding door 1a. Is located at the lower end linear rail portion 45 connected to the rear end portion of the right curved rail portion 43, the lower roller 27 of the central sliding door 1c is located at the front end portion of the curved rail portion 44, and the other sliding door 1b The lower roller 27 is positioned on the lower end straight rail portion 45 provided continuously with the rear end portion of the left curved rail portion 42. In the case of the left opening in FIG. 14, the lower roller 27 of the one sliding door 1 a is located at the rear end portion of the right curved rail portion 43, and the lower roller 27 of the other sliding door 1 b is located at the right end of the straight portion of the common rail portion 101. And the lower roller 27 of the center sliding door 1c is located in the right end of the linear part of the rail part 102 for center sliding doors. 15 (c), the lower roller 27 of the other sliding door 1b is positioned on the lower end straight rail portion 45 connected to the rear end portion of the left curved rail portion 42, and the one sliding door 1a The lower roller 27 is located at the right end of the straight portion of the common rail portion 101, and the lower roller 27 of the central sliding door 1c is located at the left end of the straight portion of the central sliding door rail portion 102.

  In the above example, the lower end linear rail portion 45 provides the same effect as the end linear rail portion 14 provided on the upper rail, and the sliding door 1a and the other sliding door 1b are fully closed. The normal position in the direction can be prevented from being stepped, and even in the opened state, it can be surely positioned in the normal position. In the fully opened state, the one sliding door 1a or the other sliding door 1b is more than the regular position. Also, the second sliding door 1b or the first sliding door 1a is shifted to the front side, so that it does not collide or rub when closed, and can be smoothly and reliably positioned at the normal position and closed.

  As described above, the lower end portion is guided to the lower rail 6 by one lower roller 27. As a result, the running of each sliding door 1 can be sufficiently stabilized, and by using one lower roller 27, There is also an advantage that 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.

  Next, the interlocking mechanism 15 will be described.

  As shown in FIG. 22 and the like, long engaging grooves 33c are formed in the front and rear on the upper end surfaces of the left and right ends of the central sliding door 1c. An engagement member that can engage with the engagement groove 33c from the upper end of the right end of the one sliding door 1a and the left end of the other sliding door 1b (that is, the end of each of the one sliding door 1a and the other sliding door in the closing direction). 35 projects rearward. The interlocking mechanism 15 is constituted by the engaging groove 33c and the engaging member 35.

  The engaging member 35 of the one sliding door 1a and the engaging member 35 of the other sliding door 1a are bilaterally symmetric, and each engaging member 35 protrudes backward from the upper end of the vertical piece-shaped sliding door mounting portion 35a. An angle 35c made of a metal fitting having an L-shaped cross section and an engaging portion 35d protruding downward from the rear end of the horizontal piece 35b. That is, the engaging portion 35d is formed at the protruding position behind the sliding doors 1a and 1b via the horizontal piece portion 35b.

  The angle 35c is attached by fixing the sliding door mounting portion 35a to the rear surfaces of the upper ends of the one sliding door 1a and the other sliding door 1b with a fixing tool 34b such as a screw. When attaching the angle 35c to the one sliding door 1a and the other sliding door 1b, the rear surface of the upper end portion of the right end portion of the one sliding door 1a and the rear surface of the upper end portion of the left end portion of the other sliding door 1b (that is, the rear surface of the upper end portion of the vertical edge member 31). ) Is formed with a recess 32f. The depth of the recess 32f is equal to or greater than the thickness dimension of the sliding door mounting portion 35a. The angle 35c is mounted in a state where the sliding door mounting portion 35a is in contact with the bottom surface of the recess 32f, and the sliding door mounting portion 35a of the angle 35c is housed so as to be completely contained in the recess 32f. When the angle 35c is attached to the central sliding door 1c, the lower surface of the horizontal piece 35b is disposed above the central sliding door 1c and at substantially the same level as the upper end surface of the one sliding door 1a and the upper end surface of the other sliding door 1b. .

  On the other hand, the rear end of the horizontal piece 35b of the angle 35c of the sliding door 1a protrudes to the left, and the rear end of the horizontal piece 35b of the angle 35c of the other sliding door 1b protrudes to the right. The engaging portion 35d protrudes. The engaging portion 35d is movable along the engaging groove 33c while being engaged with the engaging groove 33c, and the engaging portion 35d of the present example is rotatable about the vertical axis on the horizontal piece portion 35b. It consists of a roller that supports the shaft. The roller constituting the engaging portion 35d is formed of a soft material such as rubber, so that the impact at the time of interlocking engaged with the engaging groove 33c can be reduced, and the sound generated at the time of interlocking can be reduced. . In this example, the engaging portion 35d is formed of a soft material such as rubber. However, the entire end cap 33 that receives the engaging portion 35 or a push guide that is a portion to which the engaging portion 35 of the end cap 33 is engaged. The surface 33f and the pulling guide surface 33g may be formed of a soft material such as rubber, and in this case, the same effect is obtained.

  The engagement groove 33c for the one sliding door 1a formed on the right side of the central sliding door 1c and the engagement groove 33c for the other sliding door 1b formed on the left side are symmetrical, and each engagement groove 33c is a vertical edge of the central sliding door 1c. The material 31 is formed on the upper surface of the end cap 33. That is, in this example, the end cap 33 is a receiving member with which the engaging portion 35d of the engaging member 35 is engaged.

  Each engagement groove 33c is a substantially L-shaped groove in plan view, and has a groove shape parallel to the left-right direction, and one end is on the outer side (that is, on the right engagement groove 33c, on the right side, and on the left side). The joint groove 33c includes a protrusion insertion port 33d that opens to the left) and a guide groove 33e that extends forward from the other end of the protrusion insertion port 33d. The guide groove portion 33e is a linear groove parallel to the front-rear direction, and extends rearward from the front end portion of the fitting portion 33a of the end cap 33 to reach the protruding portion 33b. That is, the guide groove portion 33e of the engagement groove 33c has a rear end portion positioned in front of the sliding door main body 30 of the central sliding door 1c, and its longitudinal length is longer than the thickness dimension of the sliding door main body 30 of the central sliding door 1c. Yes. Here, the inner side surface of the guide groove 33e of each engagement groove 33c (that is, the left side surface in the right engagement groove 33c and the right side surface in the left engagement groove 33c) is a push-side guide. The surface 33f and the outer side surface (that is, the right side surface in the case of the right engagement groove 33c and the left side surface in the case of the left engagement groove 33c) are defined as the pull side guide surface 33g. Both the push-side guide surface 33f and the pull-side guide surface 33g are vertical surfaces parallel to the front-rear direction.

  Next, the operation will be described. For example, the three sliding doors 1a to 1c shown in FIG. 11 (FIG. 1 (a), FIG. 2 (a), FIG. 3 and FIG. When the other sliding door 1b is moved in the order of 15 (c) toward the one sliding door 1a, the engaging portion 35d of the other sliding door 1b has an engaging groove so that the other sliding door 1b and the central sliding door 1c overlap as shown in FIG. The protrusion insertion port 33d formed at the rear end of the engagement groove 33c at the stage where the other sliding door 1b and the central sliding door 1c substantially overlap each other as shown in FIG. Is inserted into the engagement groove 33c and hits the rear end portion of the push-side guide surface 33f of the engagement groove 33c (the portion facing the protrusion insertion port 33d), and then the engagement portion 35d of the other sliding door 1b is In front of the engaging groove 33c while engaging with the pushing side guide surface 33f of the engaging groove 33c When the other sliding door 1b and the central sliding door 1c are separated in the front-rear direction as shown in FIG. 24, the engaging portion 35d is in contact with and engaged with the front end portion of the push-side guide surface 33f of the engaging groove 33c. Stop. As a result, the central sliding door 1c is interlocked with the other sliding door 1a from the stage where the other sliding door 1b and the central sliding door 1c substantially overlap to the left-opened state where the three sliding doors 1a to 1c are moved to the right side. Move to.

  On the other hand, when the other sliding door 1b is moved in the direction of closing the other sliding door 1b in the order of FIGS. 13, 12, and 11 from the left open state in which the three sliding doors 1a to 1c shown in FIG. 14 are moved to the right side, the other sliding door 1b is engaged. The portion 35d hits the rear end portion of the pulling guide surface 33g of the engaging groove 33c until the stage immediately before the central sliding door 1c moves to the central closed position, and is engaged with the other sliding door. 1b and the central sliding door 1c are moved toward the front end side of the engaging groove 33c while engaging with the pulling side guide surface 33g of the engaging groove 33c at the stage where they start approaching in the front-rear direction, and thereafter, as shown in FIG. The sliding door 1c reaches the front end of the engaging groove 33c when it has completely moved to the closed position (when the other sliding door 1b and the central sliding door 1c have approached in the front-rear direction). As a result, the central sliding door 1c is interlocked with the other sliding door 1b until the central sliding door 1c moves from the fully opened state brought to the right side to the center which is the closed position. When the central sliding door 1c reaches the closed position, the engaging portion 35d reaches the front end portion of the engaging groove 33c as shown in FIG. Is released and moves outward from the protrusion insertion port 33d. Thereby, the other sliding door 1b will move to a closed position independently.

  According to the above configuration, since the other sliding door 1b and the central sliding door 1c can be interlocked by the interlocking mechanism 15, it is not necessary to manually open and close the central sliding door 1c when the left sliding state or the closing state is set. Is very easy.

  Further, as shown in FIG. 11, engagement grooves 33c are provided on both ends of the central sliding door 1c, and the engaging members 35 are provided on the left end (the handle side) of the other sliding door 1b and the right end (the handle side) of the one sliding door 1a, respectively. Thus, the interlocking mechanism 15 works in both the left and right openings. That is, in the fully closed state in which the three sliding doors 1a to 1c are arranged in a line with no step, the one sliding door 1a is moved toward the other sliding door 1b, so that it is the same as the other sliding door 1b and the central sliding door 1c. In addition, the interlocking mechanism 15 can move the central sliding door 1c in conjunction with the one sliding door 1a.

  When the three sliding doors 1a to 1c are closed in a flush state, when the one sliding door 1a is moved toward the other sliding door 1b, and from the right open state where the three sliding doors 1a to 1c are moved to the left side. When the sliding door 1a is moved in the closing direction, the engaging portion 35d of the one sliding door 1a is engaged with the engaging groove 33c on the right side of the central sliding door 1c. At this time, the engaging groove 33c of the engaging portion 35d is engaged. Since the engagement to is the same as that of the other sliding door 1b and the central sliding door 1c, the description thereof is omitted.

  In this example, when forming the engaging groove 33c with which the engaging portion 35d is engaged, the engaging groove 33c is formed on the upper end surface of the central sliding door 1c, whereby the front portion of the engaging groove 33c is formed as the sliding door body 30. Therefore, the amount of rearward protrusion of the engagement member 35 from the other sliding door 1b (or one sliding door 1a) can be reduced. Accordingly, the storage items such as the futons stored behind the three sliding doors 1a to 1c may jump out forward. In this case, even if the other sliding door 1b (or one sliding door 1a) is opened and closed, the other sliding door 1b ( Alternatively, the engagement member 35 protruding rearward from the one-way sliding door 1a) is difficult to be hooked on a storage item such as a futon.

  Further, when the engagement groove 33c is formed in the central sliding door 1c, the engagement groove 33c is formed on the upper surface of the end cap 33 (receiving member) that constitutes the upper end surface of the vertical edge member 31 separate from the sliding door body 30. The engaging groove 33c can be easily formed in the central sliding door 1c, and it is not necessary to newly provide a member for forming the engaging groove 33c, thereby reducing the number of members.

  In forming the engaging member 35, the sliding door mounting portion 35a of the engaging member 35 is housed in the recessed portion 32f provided on the rear surface of the upper end of the other sliding door 1b (or one sliding door or 1a), and the other sliding door 1b (or one) is stored. Since it is attached to the sliding door 1a), the sliding door mounting portion 35a of the engaging member 35 does not protrude to the rear of the other sliding door 1b (or one sliding door 1a), so that the other sliding door 1b (or one sliding door 1a) is centered. When overlapped with the sliding door 1c, the distance between the other sliding door 1b (or one sliding door 1a) and the central sliding door 1c in the front-rear direction can be reduced, and the expected dimension K of the rails 5 and 6 can be reduced. Further, the sliding door mounting portion 35a of the engaging member 35 is mounted in the recessed portion 32f formed in the rear surface of the upper end portion of the vertical edge member 31 separate from the sliding door main body 30, so that it is formed in the one sliding door 1a and the other sliding door 1b. The recessed portion 32f can be formed at a low cost, and the engaging member 35 can be attached from the rear side of the other sliding door 1b (or one sliding door 1a) even after the three sliding doors 1a to 1c are suspended from the upper rail 5. it can. Furthermore, since the vertical edge member 31 to which the engagement member 35 is attached is made of metal made of aluminum, the vertical edge member 31 having a high strength can receive an impact applied to the engagement member 35 at the start of interlocking.

  In this example, when forming the engaging portion 35d, the lower surface of the horizontal piece portion 35b protruding rearward from the upper end of the other sliding door 1b (or one sliding door 1a) is located above the central sliding door 1c and the other sliding door 1b ( Alternatively, the engaging portion 35d and the engaging groove 33c are arranged at substantially the same level as the upper end surface of the one-way sliding door 1a), and the engaging portion 35d protrudes downward from the rear end portion of the engaging member 35. The length in the vertical direction to be engaged can be sufficiently secured, and the gap formed between the upper end surface of the other sliding door 1b (or one sliding door 1a) and the upper rail 5 can be reduced, and the appearance is good.

  In this embodiment, the engagement groove 33c is an L-shaped linear groove. However, the engagement groove 33c is smoothly positioned so as to be located on the side closer to the other sliding door 1b as shown in FIG. It may be a curved groove. In the illustrated example, the engaging groove is formed in a substantially arc shape in plan view, and the projecting portion insertion opening 33d is formed by opening the rear end portion outward.

  In this way, the engagement groove 33c is a substantially arc-shaped groove that is smoothly curved so as to be located on the outer side toward the rear end side, so that the other sliding door 1b (or the one sliding door 1a) and the central sliding door 1c are interlocked. The joining portion 35d can be smoothly moved into the engaging groove 33c. The engagement operation of the engagement groove 33c and the engagement portion 35d during the movement of the one sliding door 1a and the movement of the other sliding door 1b in this example is performed in the same manner as in the above embodiment as shown in FIGS. Therefore, detailed description is omitted.

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

The opening / closing operation | movement of the sliding door apparatus of this invention is shown, (a) is the general | schematic bottom view which looked at the upper rail part which shows the state which closed three sliding doors flush with the bottom, (b) is the state in the middle of opening and closing It is the schematic bottom view which looked at the upper rail part which shows this from the bottom, (c) is the schematic bottom view which looked at the upper rail part which shows the fully open state which accumulated three sliding doors back and forth from the bottom. The opening / closing operation | movement of a sliding door apparatus same as the above is shown, (a) is a schematic plane sectional view which shows the state which closed three sliding doors flush, (b) is a schematic plane sectional view which shows the state in the middle of opening and closing. (C) is a general | schematic plane sectional view which shows the fully open state which piled up three sliding doors back and forth. It is the perspective view seen from the back which omitted the upper rail of the fully closed state of a sliding door device same as the above. It is the perspective view seen from the back which abbreviate | omitted the upper rail in the state in the middle of opening and closing of a sliding door apparatus same as the above. It is the perspective view seen from the back which abbreviate | omitted the upper rail of the state in the middle of opening and closing of the sliding door apparatus same as the above. It is the perspective view seen from the back which abbreviate | omitted the fully opened state upper rail which accumulated three sliding doors of the sliding door apparatus same as the above. It is the disassembled perspective view seen from the downward direction of the upper rail same as the above. (A) (b) (c) (d) (e) (f) is the expansion perspective view seen from the auxiliary | assistant rail blocks 18a-18f from the downward direction, respectively. (A) is the perspective view seen from the downward direction of the upper rail, (b) is the perspective view seen from the lower rail of the state which abbreviate | omitted the sub upper rail cover. (A) is a bottom view seen from below the upper rail, (b) is a bottom view seen from below the upper rail with the sub-upper rail cover omitted, and (c) is a view of three sliding doors. It is the perspective view which looked at the upper rail part of a fully closed state from the downward direction. Fig. 4 is an enlarged perspective view with a part broken away of Fig. 3. FIG. 5 is an enlarged perspective view, partly broken, of FIG. 4. FIG. 6 is an enlarged perspective view, partly broken, of FIG. FIG. 7 is an enlarged perspective view, partly broken, of FIG. 6. (A) (b) (c) is explanatory drawing which shows the operation order of left opening same as the above. (A) (b) (c) is explanatory drawing which shows the operation order of right opening same as the above. (A) is explanatory drawing which shows the positional relationship of the runner and auxiliary roller which were provided in three sliding doors same as the above, (b) is explanatory drawing which shows the position of the auxiliary rail block in an upper rail. It is the bottom view seen from the lower side for the explanatory view which shows the relationship between the auxiliary rail block 18b same as the above, the auxiliary rail block 18e, the auxiliary roller with low height, and the high auxiliary roller. (A) is explanatory drawing which shows the relationship between the auxiliary roller with low height in the EE line of FIG. 18, and the auxiliary rail block 18b, (b) is auxiliary roller with high height in the EE line of FIG. Is an explanatory view showing the relationship between the auxiliary rail block 18b, and FIG. 18C is an explanatory view showing the relationship between the auxiliary roller having a low height and the auxiliary rail block 18e along the line FF in FIG. 18, and FIG. It is explanatory drawing which shows the relationship between the auxiliary roller with a high height in the FF line | wire of FIG. 18, and the auxiliary rail block 18e. It is the bottom view seen from the lower side for the explanatory view which shows the relationship between the auxiliary rail block 18d same as the above, the auxiliary rail block 18f, the auxiliary roller with low height, and the high auxiliary roller. (A) is explanatory drawing which shows the relationship between the auxiliary roller with the low height in the GG line of FIG. 20, and the auxiliary rail block 18d, (b) is the auxiliary roller with the high height in the GG line of FIG. Is an explanatory view showing the relationship between the auxiliary rail block 18b and FIG. 20C is an explanatory view showing the relationship between the auxiliary roller having a low height and the auxiliary rail block 18f in the HH line of FIG. 20, and FIG. It is explanatory drawing which shows the relationship between the auxiliary roller with high height in the HH line | wire of FIG. 20, and the auxiliary rail block 18f. The state just before an engaging part at the time of opening operation of the interlocking mechanism same as the above is introduced into an engaging groove is shown, (a) is a top view and (b) is a perspective view. The engaging part at the time of opening operation of the interlocking mechanism same as the above is shown in a state where it is introduced into the protrusion insertion port of the engaging groove, (a) is a plan view, and (b) is a perspective view. The engagement part at the time of opening operation of an interlocking mechanism same as the above shows the state introduced into the front end part of the engagement groove, (a) is a top view, (b) is a perspective view. The state just before the engaging part at the time of opening operation of the interlocking mechanism of another example is introduced into an engaging groove is shown, (a) is a top view, (b) is a perspective view. The engaging part at the time of opening operation of the interlocking mechanism same as the above is shown in a state where it is introduced into the protrusion insertion port of the engaging groove, (a) is a plan view, and (b) is a perspective view. The engagement part at the time of opening operation of an interlocking mechanism same as the above shows the state introduced into the front end part of the engagement groove, (a) is a top view, (b) is a perspective view. It is a perspective view which shows the conventional interlocking mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding door 1a One sliding door 1b The other sliding door 1c Central sliding door 15 Interlocking mechanism 19 Guidance mechanism 31 Vertical edge material 32 Edge material main body 33 End cap 33c Engagement groove 33d Projection insertion port 35 Engagement member 35b Horizontal piece part 35d Engagement part

Claims (6)

  A sliding door device having three or more sliding doors, wherein the three sliding doors that are continuously adjacent in a closed state are a central sliding door located in the center, and a one sliding door disposed on one side of the central sliding door; The three sliding doors are arranged on the other side of the central sliding door, and the three sliding doors are arranged so as to be flush with each other in the closed state, and the three sliding doors are flush with each other. When the other sliding door is moved toward the one sliding door, the other sliding door is guided so as to overlap the one sliding door, and the central sliding door is moved after the one sliding door when the central sliding door is moved to the one sliding door. Provided with a guiding mechanism for guiding so as to overlap, when moving the other sliding door toward the one sliding door side from the state that is closed to the same plane, provided an interlocking mechanism for opening and closing the central sliding door following the other sliding door, The interlocking mechanism is long before and after being formed on the upper end surface of the central sliding door. An engaging groove and an engaging member that protrudes rearward from the upper end of the other sliding door and engages with the engaging groove, and protrudes downward from a rear end portion of the engaging member to engage with the engaging groove. An engaging portion that is movable along the engaging groove is provided while being joined, and a protrusion insertion opening that opens to the side of the other sliding door side is formed at the rear end portion of the engaging groove, which is closed to the same plane. When the other sliding door is moved toward the one sliding door from the state, the engaging portion is inserted into the engaging groove from the protrusion insertion port of the engaging groove when the other sliding door and the central sliding door substantially overlap. And the other sliding door and the central sliding door are configured to be engageable with the front end portion of the engaging groove at a stage where they are separated from each other in the front-rear direction.   The engaging member includes a horizontal piece portion projecting rearward from the upper end of the other sliding door, and an engaging portion projecting downward from the rear end portion of the horizontal piece portion, and the lower surface of the horizontal piece portion is lower than the central sliding door. 2. The sliding door device according to claim 1, wherein the sliding door device is arranged at an upper level and substantially at the same level as an upper end surface of the other sliding door.   3. A sliding door device according to claim 1, further comprising: a receiving member having an engaging groove formed on an upper surface thereof, wherein the receiving member is fitted into a recess formed on an upper end surface of the central sliding door. .   The center sliding door includes a sliding door main body and a long vertical edge member provided on a side edge of the sliding door main body, and an engagement groove is formed on an upper end surface of the vertical edge member. The sliding door apparatus in any one of 1-3.   The central sliding door includes a sliding door body and a long vertical edge member provided at a side edge of the sliding door body, and the vertical edge member is a hollow and long edge member body provided at a side edge of the sliding door body, 5. An end cap that is fitted into a recess formed by an upper end opening of the rim material main body, and the engagement groove is formed on the upper surface of the end cap. 6. Sliding door device.   The sliding door device according to any one of claims 1 to 5, wherein the engagement groove is a groove that is smoothly curved so that the rear end side is located on a side of the other sliding door side.

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