JP2018017015A - Sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding door device that enables two single door bodies to be lined up linearly and butted to each other when an opening is closed by the two single door bodies.SOLUTION: A sliding door device includes:a first single door body 7 and a second single door body 8, the second single door body moving laterally on a second lateral movement channel 10 on outside of a first lateral movement channel 9 on which the first single door body moves laterally, the second single door body having a top edge side suspended by an upper lateral movement body 33 through a pair of parallel links 34, 35; a lower lateral movement body 16 provided on an inner side at a central part in a lengthwise direction of the first lateral movement channel 9; a main guide roller 73 at a free end of a lower link 70 pivoted on the lower lateral movement body 16, the main guide roller being engaged with a lower second guide rail 24 of the second single door body 8; control levers 49, 69 provided continuously on the parallel link 34 and the lower link 70, the control levers having cam follower rollers 50, 72 at a tip; and an upper cam rail 18 engaged with the cam follower roller 50 and a lower cam rail engaged with the cam follower roller 72 provided on the first single door body 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sliding door device in which an opening is closed by a first door unit and a second door unit that are serially connected in the direction of the lateral path on the same lateral path.

  As this kind of sliding door device, as described in the cited document 1, the first door unit is supported so as to be able to move laterally on the entire side of the lateral movement path, and the second door unit is moved sideways. It is supported by two sets of upper and lower laterally movable bodies that are supported so as to be laterally movable in parallel with the lateral movement path on the inner side of the path through two upper and lower parallel links crossing both upper and lower sides of the lateral movement path, and Between the inner position located on the lateral movement path and the outer position located outside the first door alone located on the lateral movement path, it was configured to be movable back and forth in parallel.

JP 2003-138835 A

  In the sliding door device described in Patent Literature 1 as described above, in order to translate the lower side portion of the second door unit between the inner position and the outer position, the lower lateral body and the lower lateral body are arranged. Since the lower pair of parallel links connecting the moving body and the lower part of the second door unit are used, the lower side moving body is also provided on the floor side of the storage space opened and closed by the sliding door device. It is necessary to dispose a guide rail that guides the entire space, and the floor surface of the storage space cannot be connected to the floor surface outside the storage space. Of course, a long guide rail on the floor side and a lower laterally movable body having a long overall length that can support a pair of lower parallel links are necessary, which raises a problem of high cost.

  The present invention proposes a sliding door device that can solve the conventional problems as described above. The sliding door device according to the present invention includes an inner first lateral movement path, The second lateral movement path that overlaps the outside of the one lateral movement path, the first upper fixed guide rail and the second upper fixed guide rail that are arranged inside the first lateral movement path, and in series in the first lateral movement path The first door unit is provided with a pair of roller units in the lateral direction of the door attached to the upper end side of the first door unit and the second door unit. The first upper fixed guide rail is suspended in the first lateral movement path so as to be laterally movable, and the second door unit is supported by the second upper fixed guide rail so as to be laterally movable. The first lateral movement path and the first lateral movement path are connected to the upper lateral movement body via a pair of upper parallel links in the door lateral movement direction. The pair of upper side parallel links is connected in series to the pair of upper parallel links. When in the closed position, it is in a retracted posture that extends obliquely forward from the upper lateral body to the side opposite to the side where the first door alone is located, and inside the central region in the length direction of the first lateral path. A lower fixed guide rail is provided on the floor side, and one lower laterally movable body supported by the lower fixed guide rail so as to be laterally movable only within a certain range has the same size as the upper parallel link. When the first second door unit is in the series-closed position, the upper inner parallel link on the side close to the first door unit of the pair of upper parallel links is provided. The roller at the free end of this lower arm is supported under the second door alone. A control lever that is engaged with a second lower guide rail attached to the side so as to be laterally movable in the door lateral movement direction, and a cam driven roller is pivotally supported at the free end of the upper inner parallel link and the lower arm. Are connected to the upper inner parallel link and the lower arm in a reverse diagonally forward direction, and the first door alone has the first and second doors in the series closed position when the first and second both doors are controlled. A pair of upper and lower cam rails with which the cam driven roller of the lever can be freely engaged and a first lower guide rail that engages with the cam driven roller of the lower control lever detached from the lower cam rail are attached. When the first door unit and the second door unit at the series closed position are moved relatively close to each other, the upper inner parallel link and the lower arm are interlocked to swing from the retracted position to the forward protruding position. Let the second unit alone After the parallel movement from the road to the second lateral movement path, the upper and lower control levers have a length that is disengaged from the cam driven roller.

  The sliding door device having the above-described configuration is used so as to close the opening of the storage space by the first second door alone in the series closed position, and the first second in the series closed position. When the first door alone is pushed to the side where the second door alone is located within the two doors alone, the upper and lower cam rails on the first door alone are among the pair of upper parallel links that suspend the second door alone, The upper inner parallel link and the lower arm on the floor surface are swung in a posture projecting forward via the control levers provided respectively, and the second door unit is moved from the first lateral movement path to the second outer side. The first door alone moves sideways in the first lateral movement path and enters the inside of the second door movement while being translated into the lateral movement path. By laterally moving, half the area on the side where the first door alone was located within the full width of the opening is released. So it is possible. At this time, the parallel movement of the second door unit forward is performed as the pair of upper parallel links and one lower arm swing around the fulcrum on the second unit unit side. In this case, an upper lateral body that pivotally supports the pair of upper parallel links and a lower lateral body that pivotally supports the lower arm are equivalent to the swing angle of the pair of upper parallel links and one lower arm. It will move sideways in the direction of the single unit. Further, the lateral movement of the first door alone causes the cam driven roller of the control lever of the lower arm to come out of the lower cam rail of the first door alone, but the cam driven roller continues to move to the first lower guide rail. The position of the lower arm that has been switched to the position of projecting forward is continuously maintained as it is, as the first door alone moves sideways and moves relatively within the first lower guide rail. The

  Contrary to the above, when the second single door is pushed to the side where the first single door is located, the upper and lower sides of the first single door side are Since both cam rails work and the second door unit moves from the first lateral movement path to the outer second lateral movement path, it moves to the outside of the first door unit. By laterally moving the single body to the end of the second lateral movement path, it is possible to release the half area on the side where the second door single body was present out of the full width of the opening. In this case, in a state where the pair of upper parallel links that suspend the single unit of the second door is changed to a posture projecting forward, the pair of upper side parallel links with the second side of the single unit together with the upper side moving body, The cam follower roller of the control lever of the upper inner parallel link is separated from the upper cam rail of the first door alone, but is changed to a posture protruding forward by the lower cam rail of the first door alone. Since the free end roller of the lower arm relatively moves in the second lower guide rail of the second door unit, the second door unit is continuously maintained in a position to move laterally in the second lateral movement path. . In addition, when the lower arm changes to a posture that protrudes forward by the lower cam rail of the first door unit, the lower arm is moved together with the lower lateral body by the swing angle of the lower arm. Will move sideways in the direction of lateral movement.

  According to the sliding door device of the present invention that operates as described above, each of the first and second door units has a structure in which the upper end side is suspended, but these door units are in the series closed state. When the single door unit is opened, the lower end of the single door unit is pivotally supported by the lower lateral body on the floor surface in any state when the single door unit is opened. The second door unit is held by a control lever integral with the lower arm and the lower cam rail or the first lower guide rail on the first unit unit side engaged with the cam driven roller at the free end of the control lever. The lower end side of the lower side of the lower surface is supported by a lower arm that is pivotally supported by the lower lateral moving body on the floor side, and a second lower guide rail on the second door unit side with which the free end roller of the lower arm engages. Because it is held, both the first and second doors alone can be moved stably and smoothly, It is possible to perform the opening and closing of the mouth.

  Moreover, according to the configuration of the present invention, the lower laterally movable body that holds the lower end side of the first second door unit alone and the lower arm (including the control lever) that is pivotally supported by the first lateral door are Since one common to both two-door units is sufficient, compared with the case where a dedicated holding means is provided for each of the first and second two-door units, the overall configuration of the device is very simple and implemented at low cost. I can do it. Furthermore, on the floor side, the swing of the parallel link that suspends the second door unit so that it can be translated back and forth at the center in the width direction of the opening that is closed by the first second door unit that is closed in series. It is only necessary to provide a lower laterally movable body that can laterally move only within a range corresponding to about twice the moving angle, and to support the lower laterally movable body with one lower arm provided with a control lever. That is, when the first single door or the second single door is opened, the floor side is moved by the overlap of the first single door and the second single door, and the lateral movement of the lower lateral moving body is started. About half of the route is overhanging, and there is very little risk of adversely affecting the passage of people and taking in and out of luggage in an open area, and safety is improved.

  When the above-mentioned present invention is carried out, specifically, the lower fixed guide rail is constructed to be separated from the floor surface upward, and the lower arm and the lower control lever are fixed to the lower fixed rail. It can extend forward through between the guide rail and the floor. According to this configuration, the configuration of the present invention is easy in a situation where the floor surface of the storage space opened and closed by the sliding door device cannot be easily dug as in the case where the floor surface is configured with concrete. Can be implemented. Of course, since the lower laterally movable body does not laterally move above the lower fixed guide rail, the floor is flush with the upper surface of the lower fixed guide rail in the storage space opened and closed by the sliding door device. It is also possible to construct a flat floor surface in the storage space by laying materials.

  In addition, the floor side and the first door alone inside the central region in the length direction of the first lateral movement path are fitted to each other when the first door alone reaches the series closed position, The fitting part which controls the position of the front-back direction of the lower end side of the said 1st door single-piece | unit can be provided. According to this configuration, when the first second door unit is in the series closing position and the opening is closed, the position in the front-rear direction on the lower end side (floor side) of the first door unit is The lower cam rail of the first door unit side and the floor side lower arm having the lower control lever that engages with the lower cam rail are fixed by the fitting of the fitting portion. The position in the front-rear direction on the lower end side (floor surface side) of the second door unit is also in a fixed state, and the state where the first second door unit in the series closed position closes the opening is more It is held more reliably and stably. In the case of implementing this configuration, the fitting portion is composed of a block attached to the lower fixed guide rail and a guide rail having a groove-shaped cross section along the door lateral movement direction attached to the first door alone. It is preferable to do this.

FIG. 1A is a plan view of a state in which the opening is closed between the first door unit and the second door unit in the series closed position, and FIG. 1B is a front view with the same part cut away. 2A and 2B are cross-sectional plan views at different heights of FIG. 1B. 3A is an enlarged right side view of FIG. 1B, and FIG. 3B is an enlarged sectional view taken along line AA of FIG. 1B. 4A is an enlarged sectional view taken along line BB in FIG. 1B, and FIG. 4B is an enlarged sectional view taken along line CC in FIG. 1B. FIG. 5 is a partially cutaway front view of the first door unit as viewed from the back side. 6A is a plan view of the upper half of FIG. 5, FIG. 6B is a cross-sectional view of the upper half of FIG. 5 along the line DD, FIG. 6C is a cross-sectional view of the lower half of FIG. FIG. 6D is a bottom view of the lower half of FIG. FIG. 7A is a partially cutaway front view of the second door as viewed from the back side, FIG. 7B is a plan view of the upper half of FIG. 7A, and FIG. 7C is a bottom view of the lower half of FIG. FIG. 8A is a longitudinal side view showing the stopper means attached to the upper inner end of the first door alone and the first second upper fixed guide rail on the housing side, and FIG. 8B is a front view showing only the stopper means. FIG. 8C is a partially cross-sectional plan view showing only the stopper means. FIG. 9A is a partially cut-away enlarged plan view of the main part showing the released state of the stopper means in the door closing completion state shown in FIG. 1A, and FIG. 9B is the main part showing the state where the stopper means has returned to the operating state. It is a partially cutaway enlarged plan view. FIG. 10A is a front view showing a suspension roller unit of the first door alone, FIG. 10B is a plan view thereof, and FIG. 10C is a longitudinal side view thereof. FIG. 11A is a partially cutaway plan view showing the second door alone and its hanging means, and FIG. 11B is a partially cutaway front view of the hanging means. FIG. 12A is a cross-sectional plan view of the parallel link connecting portion at the upper inner end of the second door alone, and FIG. 12B is a partially longitudinal side view showing a state before the parallel link connecting portion is connected. FIG. 13A is a cross-sectional plan view showing the parallel link connecting portion at the upper outer end of the second door alone in a state before connection, and FIG. 13B is a partially longitudinal side view of FIG. 13A. FIG. 14A is a cross-sectional plan view showing the parallel link connecting portion in the upper part of the outer end of the second door alone in a connected state, and FIG. 14B is a front view of the parallel link connecting portion seen from the inside of the second door alone. is there. 15A is a plan view showing a guide member on the housing side in the longitudinal movement guide means of the second door alone, FIG. 15B is a front view thereof, FIG. 15C is a bottom view thereof, and FIG. 15D is a left side view thereof. 16A is a cross-sectional view taken along line FF in FIG. 15B, FIG. 16B is a cross-sectional view taken along line GG in FIG. 15B, and FIG. 16C is a plan view showing a driven member on the second door unit side in the longitudinal movement guide means. 16D is a right side view of FIG. 16C, and FIG. 16E is a front view of the driven member as viewed from the back side of the second door alone. 17A and 17B are cross-sectional plan views at different heights showing the longitudinal movement guide means when the second door unit is in the series closed position shown in FIG. 1A. FIGS. 17C and 17D show the second door It is a cross-sectional top view in different height which shows the said back-and-forth movement guide means when a single body advances from the serial closed position shown in Drawing 1A to the advance limit position. FIG. 18A is a cross-sectional plan view for explaining the suspension means of the second door alone, and FIG. 18B is an enlarged cross-sectional plan view showing one of the laterally moving bodies used in the suspension means. FIG. 19A is a longitudinal side view of the parallel link support portion of the laterally movable body shown in FIG. 18B, and FIG. 19B is a longitudinal side view of another part of the laterally movable body. FIG. 20 is a cross-sectional plan view showing a state in which the parallel link in the suspension means of the second door alone in the state shown in FIG. 18A is switched from the retracted position to the protruding position. FIG. 21A is a partially longitudinal front view showing a door single unit lower end side guiding means disposed in the center portion on the floor side, and FIG. 21B is a longitudinal sectional side view of the same portion. FIG. 22 is a cross-sectional plan view showing a lower laterally movable body and a lower link of the door unit lower end side guiding means shown in FIG. 21A. FIG. 23 is a plan view showing a state in which the second door unit located at the series closed position shown in FIG. 1A has started to move outward from the first door unit. 24A is a cross-sectional plan view showing the lower link operating state of the door unit lower end side guiding means in the situation shown in FIG. 23, and FIG. 24B is a situation in which the degree of opening of the second door unit shown in FIG. 24A is further advanced. FIG. 24C is a cross-sectional plan view in a state where the degree of opening of the second door unit shown in FIG. 24B has further advanced. FIG. 25A is a plan view of a state in which the second door unit in the series closed position shown in FIG. 1A is opened to the open limit that overlaps the outside of the first unit unit, and FIG. 25B is a partially cutaway front view thereof. is there. FIG. 26 is a right side view of FIG. 25B. FIG. 27A is a partially cutaway plan view of the main part in a state in which the first door unit, which was in the series closed position shown in FIG. 1A, has begun to open to the inside of the second door unit, and FIG. 27B is shown in FIG. 27A. It is a partially notched top view of the principal part in the state which opened the 1st door simple substance from the position. 28A and 28B are cross-sectional plan views at different heights of FIG. 27B. FIG. 29A is a plan view of a state in which the first door unit that was in the series closed position shown in FIG. 1A is opened to the open limit that overlaps the inside of the second door unit, and FIG. 29B is a partially cutaway front view thereof. is there. 30 is a cross-sectional view taken along line FF in FIG. 29B.

  1-4, 1 is a sliding door apparatus, and opens and closes the front opening part of the storage space 2. FIG. The storage space 2 is formed on the floor surface 3 by left and right vertical side plates 4a and 4b, a horizontal top plate 5 and a vertical rear side plate (not shown). The storage space 2 shown in the figure is formed by a vertical partition plate 6. It is divided into left and right. The sliding door device 1 includes a first door unit 7 and a second door unit 8, and opens and closes the front opening of the storage space 2 by the both door units 7, 8. 2 shows a state in which the doors 7 and 8 are in the series closed position and the front opening of the storage space 2 is closed.

  As shown in FIG. 1A, the front opening of the storage space 2 includes a first lateral movement path 9 in which the first door unit 7 laterally moves over the entire width of the front opening, and the first lateral movement path 9. A second lateral movement path 10 in which the second door unit 8 laterally moves across the entire width of the front opening is set on the outside. As shown in FIGS. 3 and 4, the first upper fixed guide rail 11 that covers the front end surface of the horizontal top plate 5, and the front end upper side of the horizontal top plate 5 are disposed at the upper part inside the first lateral movement path 9. A second upper fixed guide rail 12 is provided. The first upper fixed guide rail 11 is formed by connecting a groove-shaped rail portion 11b to the lower end of a vertical strip-shaped plate portion 11a that covers the front end surface of the horizontal top plate 5, and the second upper fixed guide rail 12 is A pair of inwardly facing U-shaped rail portions 12a and 12b arranged in parallel to each other in a symmetrical manner are arranged on a horizontal strip-shaped plate portion 12c placed on the upper surface of the horizontal top plate 5, and the inner U-shaped rail portion A vertical belt-like mounting plate portion 12d extending upward from 12b is fixed to a vertical outer surface of a rail mounting plate 13 provided on the upper side of the horizontal top plate 5. The first upper fixed guide rail 11 is integrated with the second upper fixed guide rail 12 so that the upper end of the vertical strip plate portion 11 a is connected to the bottom surface of the horizontal strip plate portion 12 c of the second upper fixed guide rail 12. It can shape | mold and can be fixed to the front end surface of the horizontal top plate 5 in the said vertical strip | belt-shaped board part 11a as needed.

  On the floor surface 3 inside the central region in the length direction of the first lateral movement path 9, a door unit lower end side guide means 14 is provided. As shown in FIGS. 21A and 21B, the door unit lower end side guide means 14 is guided by the lower fixed guide rail 15 and the lower fixed guide rail 15 so that the lower side of the lower fixed guide rail 15 The lower laterally movable body 16 capable of laterally moving along the first lateral movement path 9 is provided. The lower fixed guide rail 15 is formed by integrating a pair of inwardly facing U-shaped rail portions 15a and 15b arranged in parallel in a symmetrical manner by a horizontal strip plate portion 15c on the upper side, and is attached to both ends thereof. The support members 15d and 15e having a U-shaped side shape for releasing the front side are fixed on the floor surface 3 so as to be installed horizontally along the first lateral movement path 9 above the floor surface 3 at an integral height. .

  As shown in FIG. 1A, when the first door unit 7 and the second door unit 8 are in the series closed position where they butt in series with each other on the first lateral movement path 9, the first door unit 7 and the second door As shown in FIG. 2A, a notch step portion 7 a is formed on the outer side of the inner end of the first door unit 7, assuming that the end portions of the single unit 8 that face each other are the inner end and the opposite end portion is the outer end. The thin-walled projecting plate portion 8a that enters the notch step portion 7a outside the inner end of the first door unit 7 when the both door units 7, 8 are in the series closed position. However, it is formed flush with the surface of the second single unit 8.

  As shown in FIG. 5 and FIG. 6, on the back surface side of the first door unit 7, a pair of roller units in the door lateral movement direction (direction parallel to the length direction of the first second lateral movement paths 9 and 10). 17A, 17B, a pair of upper and lower cam rails 18, 19, a first lower guide rail 20, and a fitting portion rail 21 are attached. The pair of roller units 17A and 17B in the lateral direction of the door are attached at positions close to the upper inner end angle and the upper outer end angle of the first door unit 7, and the upper cam rail 18 is disposed on the inner end side of the first door unit 7. It is provided along the upper side of the first door unit 7 directly above the roller unit 17A, and includes an inclined cam groove 18a that is open on the upper side and curved along a horizontal plane. The lower cam rail 19 is provided along the lower side of the first door unit 7 just below the roller unit 17A on the inner end side of the first door unit 7, and the lower side is released and along the horizontal plane. A curved cam groove 19a is provided. The first lower guide rail 20 is provided along the lower side of the first single door 7 between the lower cam rail 19 and the outer end of the first single door 7, and one end of the first lower guide rail 20 is connected to the lower cam rail. A linear rail groove 20a is provided which is connected to 19 inclined cam groove portions 19a and whose lower side is released. The fitting portion rail 21 is attached horizontally so as to be adjacent to the upper side of the lower cam rail 19, and has a linear shape in which the lower side and one end on the outer end side of the first door unit 7 are released. The guide groove 21a is provided.

  As shown in FIG. 7, on the back surface side of the second door unit 8, a pair of link pivot support members 22, 23, a second lower guide rail 24, and a longitudinal movement guide means for the second door unit 8 are provided. 25, a follower member 26 and a pair of upper and lower contact members 27a and 27b are provided. The link shaft support members 22 and 23 are embedded in the position near the inner end and the position near the outer end of the upper side of the second door unit 8, and the second lower guide rail 24 is connected to the lower surface and the lower side of the second door unit 8. It is embedded along the lower side of the second door unit 8 at the corner between the end surface and is located at the center in the width direction of the lower end surface of the second unit unit 8 and the lower side is released. Of the main rail groove 24a, and the recessed step adjacent to the inner side of the main rail groove 24a (the back side of the second door unit 8) is released from the lower side and the back side of the second door unit 8 It is a sub rail groove 24b. The sub rail groove 24b has a length extending to the inner end side of the second door unit 8 more than the main rail groove 24a, and a guide roller is fitted to the extended inner end portion of the sub rail groove 24b. A recess 24c is formed. The driven member 26 is attached to the upper end of the second door unit 8 between the link shaft support member 23 on the outer end side of the second door unit 8 and the outer end of the second door unit 8, and the contact members 27a and 27b. Is attached to a position near the outer end of the second door unit 8 and has a truncated conical column shape made of a hard elastic material such as rubber.

  The first door unit 7 is suspended from the first upper fixed guide rail 11 via the roller units 17A and 17B so as to be movable in the first lateral movement path 9. The roller units 17A and 17B have the same structure, and include a mounting plate 28, a movable body 29, guide rollers 30a and 30b, and a stopper piece 31, as shown in FIGS. 10A to 10C. The movable body 29 is supported at the center between both ends thereof by a cylindrical projection 28a projecting from the center of the upper end of the mounting plate 28 so that it can freely move up and down within a certain range. Guide rollers 30a and 30b are pivotally supported by the horizontal pivots in the longitudinal direction. Reference numeral 29a denotes a detachment prevention screw that prevents the movable body 29 from coming off from the cylindrical protrusion 28a. The stopper piece 31 has a central portion in the vertical direction between a pair of left and right bearing plate portions 28b and 28c projecting from the mounting plate 28 below the movable body 29 by a horizontal left and right direction support shaft 31a. In FIG. 10C, the upper end portion of the stopper piece 31 is inserted between the bearing plate portions 28b and 28c, and is shown in phantom lines in FIG. 10C. The upper end portion of the stopper piece 31 protrudes from between the bearing plate portions 28b and 28c, and holds the posture of the stopper piece 31 alternatively with the acting posture positioned directly below the guide rollers 30a and 30b in a side view. Means are provided. In the illustrated embodiment, the protrusions 31b and 31c provided on both the left and right side surfaces of the upper and lower ends of the stopper piece 31 selectively enter inside the bearing plate portions 28b and 28c, whereby the protrusion 31b / 31c. Although the configuration is such that the posture of the stopper piece 31 can be alternatively held by the friction between the bearing plate portions 28b and 28c, the specific configuration is not limited to the illustrated configuration.

  When the first door unit 7 is suspended from the first upper fixed guide rail 11 on the horizontal top plate 5 so as to be laterally movable, the stopper piece 31 is held in the retracted position shown by the solid line in FIG. 10C. In this state, the guide rollers 30a and 30b of the roller units 17A and 17B are fitted on the groove-shaped rail portion 11b of the first upper fixed guide rail 11. Thereafter, by switching the stopper piece 31 to the action posture shown by the phantom line in FIG. 10C, as shown in FIG. 4A, the upper end of the stopper piece 31 is located directly below the groove-shaped rail portion 11b, Lifting of the single unit 7 can be prevented by the upper end of the stopper piece 31 coming into contact with the lower surface of the groove-shaped rail portion 11b. When it is necessary to remove the attached first door unit 7, the stopper piece 31 is switched to the retracted position shown by the solid line in FIG. 10C, thereby lifting the first door unit 7 and moving the guide rollers 30 a and 30 b to the first position. After floating from the groove-shaped rail portion 11b of the upper fixed guide rail 11, the first door unit 7 can be pulled out to the front.

  In order to suspend the second door unit 8 from the second upper fixed guide rail 12 so as to be laterally movable, the suspending means 32 shown in FIGS. 1A, 4A, and 11A to 14B is used. The suspending means 32 includes an upper lateral body 33 that is supported by the second upper fixed guide rail 12 so as to be laterally movable, and a horizontal bridge that is installed between the upper lateral body 33 and the upper end of the second door unit 8. The upper side parallel links 34 and 35 which can swing are comprised. The upper lateral moving body 33 is a unit in which a pair of lateral moving body units 36 and 37 in a door lateral movement direction are connected and integrated by a connecting member 38, and is supported by a horizontal front and rear direction support shaft on the outside of each lateral moving body unit 36 and 37. The supported pair of support rollers 36a and 37a, which are supported in a pair of front and rear, are fitted into the U-shaped rail portions 12a and 12b of the second upper fixed guide rail 12, so that the upper lateral moving body 33 is moved to the second upper fixed guide. The rail 12 is supported so that it can move laterally.

  As shown in FIG. 18B, the pair of laterally moving body units 36 and 37 includes a vertical rotation shaft 39 for supporting a parallel link at one end and a connecting member mounting portion 40 at the other end, as shown in FIG. 18B. These two laterally moving body units 36 and 37 having posture switching holding means 41 are disposed in the opposite directions so that the vertical rotation shafts 39 for supporting parallel links are positioned at both ends in the lateral movement direction. The both ends of the connecting member 38 are coupled to each connecting member mounting portion 40 and integrated. As shown in FIGS. 18B, 19A, and 19B, the parallel link posture switching holding means 41 includes a switching cam 42, an engagement piece 43, and a pressing piece 44 fixed to the lower end portion of the parallel link supporting vertical rotating shaft 39. , And a damper 45. The inner ends of the upper parallel links 34 and 35 are fixed to the upper ends of the parallel link supporting vertical rotating shafts 39 of the respective lateral moving body units 36 and 37, and the switching cam 42 is arranged around the switching cam 42. The rotational angle range is limited by the casings of the laterally moving body units 36 and 37. As a result, the upper parallel links 34 and 35 are located between the retracted posture shown in FIG. 18A and the protruding posture shown in FIG. The horizontal swing is only possible within a certain angle range. The retracted postures of the upper parallel links 34 and 35 are postures parallel to each other with their outer ends approaching the lateral movement path (second upper fixed guide rail 12) of the upper laterally moving body 33, and the protruding posture is The outer end portions of the upper parallel links 34 and 35 are parallel to each other and are horizontally separated from the lateral movement path of the upper lateral movement body 33 by a certain angle.

  The switching cam 42 includes a first protrusion 42 a corresponding to the engagement piece 43 and a second protrusion 42 b corresponding to the pressing piece 44. The engagement piece 43 is provided so as to be reciprocally movable in the lateral movement direction of the upper lateral movement body 33, and the distal end portion 43 b is urged toward the first protrusion 42 a side of the switching cam 42 by the compression coil spring 43 a. . The pressing piece 44 is provided so as to be reciprocally movable in the lateral movement direction of the upper lateral movement body 33 in a state of being parallel to the engagement piece 43, and the stepped distal end surface 44 a is formed by a damper 45 disposed at the back. The switching cam 42 is biased toward the second projecting portion 42b. As shown in FIG. 18A, when the upper parallel links 34 and 35 are in the retracted posture, the upper parallel links 34 and 35 are rotated in the direction of changing to the projecting posture. However, when an external force of a certain level or more in the direction of changing to the protruding posture acts on the upper parallel links 34 and 35, the switching cam 42 is prevented. The first projecting portion 42a presses the distal end portion 43b of the engagement piece 43 in the backward direction by the cam action, so that the engagement piece 43 moves backward against the urging force of the compression coil spring 43a, and the switching cam 42 Therefore, the upper parallel links 34 and 35 in the retracted posture are switched to the protruding posture.

  When the upper parallel links 34 and 35 are switched to the projecting posture, as shown in FIG. 20, the first projecting portion 42 a of the switching cam 42 rides on the distal end portion 43 b of the engaging piece 43. At this time, the stepped tip end surface 44a of the pressing piece 44 urged toward the switching cam 42 by the damper 45 is pressed against the second projecting portion 42b of the switching cam 42, whereby the upper parallel link 34 is pressed. , 35 does not unexpectedly rotate back from the protruding position to the original retracted position. When an external force of a certain level or more in the direction of changing to the original retracted posture acts on the upper parallel links 34 and 35 held in the protruding posture in this way, the second protruding portion 42b of the switching cam 42 is pressed. Since the stepped tip surface 44a of the piece 44 is pressed in the backward direction, the pressing piece 44 moves backward against the urging force of the damper 45 and allows the switching cam 42 to rotate. 34 and 35 are switched to the original retracted posture.

  As shown in FIG. 19A, the upper end side of the vertical rotation shaft 39 for supporting the parallel link of each lateral motion unit 36, 37 having the upper side parallel links 34, 35 attached to the upper end is arranged on the upper side parallel links 34, 35, respectively. Is supported by a thrust bearing 46, and a lower end portion thereof is supported by a radial bearing 47. In FIG. 18B and FIG. 19B, 48 a is a one-side release columnar support member that forms a reciprocating passage of the engagement piece 43, and 48 b is a one-side release pillar that forms a support space for the pressing piece 44 and the damper 45. It is a columnar support member. These columnar support members 48a and 48b are arranged in parallel with each other so that the side surface release portion of the support member 48a on the engagement piece 43 side is closed with the support member 48b on the pressing piece 44 and damper 45 side. , 37 is housed in a casing. Further, the projecting end portion of the pressing member 44 and the damper 45 side support member 48b on the switching cam 42 side enters between the first projecting portion 42a and the second projecting portion 42b of the switching cam 42.

  Of the pair of upper parallel links 34 and 35 in the suspending means 32 having the above-described configuration, the inner parallel link 34 on the inner end side of the second door unit 8 is approximately 90 degrees with respect to the length direction of the parallel link 34. The control lever 49 is integrally connected at an angle, and the cam driven roller 50 is pivotally supported by the vertical support shaft at the free end of the control lever 49.

  As shown in FIGS. 11A to 14B, the link shaft support members 22 and 23 (see FIG. 7A) attached to the back surface side of the second door unit 8 are a pair of upper parallel links 34 and 35 in the suspension means 32. Are supported by bearing members 53 and 54 having vertical support shafts 51 and 52, respectively. The bearing member 53 combined with the link support member 22 that supports the free end portion of the inner parallel link 34 is a thick plate having a rectangular cross-sectional shape and a vertical cross-sectional shape, and is vertically supported at one end thereof. The shaft 51 is rotatably supported, and the upper end portion of the vertical support shaft 51 is fixed to the free end portion of the inner parallel link 34. The bearing member 54 combined with the link shaft support member 23 that pivotally supports the free end portion of the outer parallel link 35 is a vertically long rectangular column shape, and the vertical support shaft 52 is supported so as to be able to rotate. The upper end of the vertical support shaft 52 is The portion is fixed to the free end portion of the outer parallel link 35.

  The link shaft support member 22 is fitted and fixed in a recess formed in a notch between the back surface and the inner end of the second door unit 8, and the bearing member 53 extends from the inner end side of the second door unit 8. The bearing member 53 is inserted to the insertion hole 55 to be inserted, the notch long hole portion 56 in which the upper end portion of the vertical support shaft 51 freely moves when the bearing member 53 is inserted into the insertion hole 55, and the inner end of the insertion hole 55. When this occurs, a locking hole 58 is provided in which the check protrusion 57a of the elastic tongue piece 57 for retaining that is integrally formed with the bearing member 53 is fitted. Further, protrusions 59 parallel to the insertion direction of the bearing member 53 are formed in two upper and lower stages on both side surfaces of the insertion hole 55, and concave grooves into which the protrusions 59 are fitted on both side surfaces of the bearing member 53. 60 is formed.

  Accordingly, the bearing member 53 with the upper end portion of the vertical support shaft 51 fixed to the free end portion of the inner parallel link 34 is inserted into the insertion hole 55 of the link support member 22 attached to the second door unit 8. From the inner end side of the second door unit 8 to the outer end side so that each protrusion 59 is fitted in each concave groove 60 and the upper end portion of the vertical support shaft 51 is fitted into the notch long hole portion 56. By inserting it horizontally to the far end, the check protrusion 57a of the retaining elastic tongue piece 57 included in the bearing member 53 is automatically fitted into the locking hole 58 on the link shaft support member 22 side, The bearing member 53 is fixed to the link shaft support member 22. At this time, the tip of the elastic tongue piece 57 for retaining has a length protruding outward from the insertion hole 55 on the link shaft support member 22 side, and when removing the inner parallel link 34 from the link shaft support member 22 Uses the tip of the retaining elastic tongue 57 to deflect the retaining elastic tongue 57 in a direction in which the check protrusion 57a is disengaged from the locking hole 58, thereby causing the bearing member 53 to move to the link shaft. It can be pulled out from the insertion hole 55 of the support member 22.

  The link shaft support member 23 is fitted and fixed in a recess formed on the back surface side of the second door unit 8, and the recess 61 into which the bearing member 54 is fitted from the back surface side of the second door unit 8, this recess When the bearing member 54 is fitted to the notch long hole portion 62 in which the upper end portion of the vertical support shaft 52 moves freely and the inner end of the recess 61 when the bearing member 54 is fitted to the 61, both sides of the bearing member 54 are fitted. Are provided with a pair of locking recesses 64 into which the check protrusions 63a of the pair of retaining tongues 63 are integrally formed.

  Therefore, the bearing member 54 with the upper end portion of the vertical support shaft 52 fixed to the free end portion of the outer parallel link 35 is inserted into the recess 61 of the link shaft support member 23 attached to the second door unit 8. An elastic tongue for retaining that the bearing member 54 is provided by horizontally fitting from the back surface side to the back end of the second door unit 8 so that the upper end portion of the vertical support shaft 52 is fitted into the notch long hole portion 62. The check protrusion 63 a of the piece 63 automatically engages with the end of the locking recess 64 on the link shaft support member 23 side, and the bearing member 54 is fixed to the link shaft support member 23. At this time, the tip of the retaining tongue 63 has a length protruding outward from the recess 61 on the link shaft support member 23 side, and when removing the outer parallel link 35 from the link shaft member 23 The bearing member 54 is linked by bending the elastic tongue 63 for retaining with the tip of the elastic tongue 63 for retaining so as to bend the check protrusion 63a inward from the engaging recess 64. It can be pulled out from the recess 61 of the shaft support member 23. It should be noted that a pair of dents are formed on the surface side of the link shaft support member 23 so as to be located outside the distal ends of the pair of retaining elastic tongue pieces 63 of the bearing member 54 fitted and locked in the recess 61. 65 is formed to be continuous with the recess 61. The pair of dents 65 serve to deepen the engagement of the fingertip with respect to the distal end portion of the retaining elastic tongue piece 63 when the distal end portion of the retaining elastic tongue piece 63 is deformed inward.

  As shown in FIGS. 17A to 17D, the longitudinal movement guide means 25 of the second door unit 8 includes a driven member 26 attached to the upper end of the second door unit 8 and the second upper fixed guide rail 12. It is comprised by the guide member 66 arrange | positioned at one end upper side. As shown in FIGS. 16C to 17D, the driven member 26 includes a horizontal plate portion 26 a, a guide roller 26 b, and a vertical pin 26 c that project horizontally inward from the upper end of the second door unit 8. The guide roller 26b is pivotally supported by a vertical support shaft in a recess formed in the outer corner of the horizontal plate portion 26a. The peripheral surface of the guide roller 26b is the outer side of the horizontal plate portion 26a. The upper surface of the guide roller 26b protrudes slightly upward from the upper surface of the horizontal plate portion 26a. The vertical pin 26c integrally protrudes upward from the horizontal plate portion 26a at a position adjacent to the guide roller 26b on the inner side in the door lateral movement direction. As shown in FIGS. 15A to 16B and FIGS. 17A to 17D, the guide member 66 includes a vertical plate portion 66a attached to the attachment plate portion 12d of the second upper fixed guide rail 12, and an outside of the vertical plate portion 66a. A horizontal projecting plate portion 66b projecting from the end portion to the front of the first lateral movement path 9 in a direction perpendicular to the front, a guide roller receiving plate portion 66c projecting downward from the outer side of the horizontal projecting plate portion 66b, and It is comprised from the vertical pin insertion groove part 66d of the front-back direction formed in the inner side of the horizontal protrusion board part 66b.

  As shown in FIG. 1A, the back-and-forth movement guide means 25 of the second door unit 8 having the above configuration is in a series closed position where the second door unit 8 is in series with the first door unit 7 in the first lateral movement path 9. As shown in FIGS. 17A and 17B, the guide roller 26b on the driven member 26 side is below the horizontal protruding plate portion 66b on the guide member 66 side, and on the inner corner of the guide roller receiving plate portion 66c. The vertical pin 26c on the driven member 26 side is received at the inner corner of the horizontal protruding plate portion 66b on the guide member 66 side, and the vertical pin insertion groove 66d is separated forward from the vertical pin 26c. In position. Therefore, in this state, even if the second door unit 8 is laterally moved inward and obliquely outward in the direction along the first lateral movement path 9, the vertical pin 26c does not enter the vertical pin insertion groove 66d. The second door unit 8 can be moved laterally. However, as shown in FIGS. 17C and 17D, the second door unit 8 in the series closed position is moved forward so that the guide roller 26b rolls in contact with the inner surface of the guide roller receiving plate portion 66c. When translated in a right angle direction, the vertical pin 26c on the driven member 26 side enters the vertical pin insertion groove 66d on the guide member 66 side, and the vertical pin 26c reaches the back end of the vertical pin insertion groove 66d. The second door unit 8 is allowed to move in the direction perpendicular to the front, but the second door unit 8 laterally moves in the direction along the first lateral movement path 9 because the vertical pin 26c and the vertical pin insertion groove 66d move. Will stop.

  The upper cam rail 18 (see FIGS. 5 and 6A) attached to the upper inner end of the first door unit 7 includes stopper means 67 as shown in FIGS. 8A to 9B. The stopper means 67 includes a movable body 67a, which is mounted on the inner end portion of the inclined cam groove portion 18a for releasing the upper side of the upper cam rail 18 so as to reciprocate within a predetermined range in the front-rear and horizontal directions. A cam groove portion 67b formed so as to be connected to the groove portion 18a, a compression coil spring 67c that biases and holds the movable body 67a at a limit position where the cam groove portion 67b is displaced inward from the inclined cam groove portion 18a of the upper cam rail 18, and the compression The stopper 67d is provided on the lower side of the movable body 67a so as to serve as a receiving portion for the coil spring 67c. In addition, a long hole 67e is provided in a portion of the upper cam rail 18 that covers the upper side of the movable body 67a in parallel with the reciprocating direction of the movable body 67a, and a pin protruding from the movable body 67a is provided in the long hole 67e. By fitting 67f, the reciprocating range of the movable body 67a is regulated.

  As shown in FIG. 1A, when the first door unit 7 is in the series closed position in series with the second door unit 8 within the first lateral movement path 9, as shown in FIG. The cam driven roller 50 at the tip of the control lever 49 connected to the inner parallel link 34 of the suspending means 32 that suspends the second door unit 8 is inserted up to the inner end position of the inclined cam groove portion 18a. . In the process in which the cam driven roller 50 reaches the inner end position of the inclined cam groove portion 18a, the cam driven roller 50 is fitted into the cam groove portion 67b of the movable body 67a, and the movable body 67a is used as an urging force of the compression coil spring 67c. The stopper 67d of the movable body 67a is retracted toward the first door unit 7 side. Then, as shown in FIG. 9B, when the cam driven roller 50 at the tip of the control lever 49 moves along the inclined cam groove 18a of the upper cam rail 18 in a direction away from the cam groove 67b of the movable body 67a, the movable body 67a. Is moved inward to the limit position by the urging force of the compression coil spring 67c, so that the stopper portion 67d is switched to the operation position approaching the second upper fixed guide rail 12 positioned inside thereof. A stopper body 68 is provided on the outer side of the upper end of the second upper fixed guide rail 12 so as to be adjacent to the side of the first door unit 7 in the lateral movement direction from the series closed position with respect to the stopper portion 67d that has reached this operating position. It is attached.

  As shown in FIGS. 21A to 22, an inner parallel link provided with a control lever 49 in the suspending means 32 of the second door unit 8 is provided below the lower laterally movable body 16 of the door unit lower end side guide unit 14. The lower link 70 having the control lever 69 is supported by the vertical rotation shaft 71 so as to be swingable horizontally. A cam driven roller 72 is pivotally supported by a vertical support shaft on the free end upper side of the control lever 69, and the second lower guide rail attached to the second door unit 8 on the free end upper side of the lower link 70. A main guide roller 73 fitted into the main rail groove 24a of 24 from the bottom upward and a sub guide roller 74 fitted into the sub rail groove 24b of the second lower guide rail 24 are supported by a vertical support shaft. ing.

  Further, as shown in FIG. 22, in the lower laterally movable body 16, the lower link posture switching having the same structure as the parallel link posture switching holding means 41 used for the suspension means 32 of the second door unit 8 is provided. Holding means 75 is internally provided. Although the same reference numerals as those shown in FIG. 18B are shown in FIG. 22 and description of the structure is omitted, the lower link posture switching holding means 75 has the lower link 70 fixed to the lower end of the vertical rotating shaft 71. The retraction posture parallel to the retraction posture of the inner parallel link 34 in the suspension means 32 of the second door unit 8 and the inner parallel link 34 via the vertical rotation shaft 71 thus made. This is selectively switched between a projecting posture and a projecting posture in parallel. The control lever 69 also maintains a posture that is always parallel to the control lever 49 connected to the inner parallel link 34, and the cam driven roller 72 at the free end thereof, as shown in FIG. The inclined cam groove 19a of the lower cam rail 19 attached to the single unit 7 and the rail groove 20a of the first lower guide rail 20 connected to the lower cam rail 19 are fitted upward from below. . Reference numeral 16 a denotes a support roller that is pivotally supported on both sides of the lower laterally movable body 16 and is fitted to the pair of U-shaped rail portions 15 a and 15 b of the lower fixed guide rail 15.

  As shown in FIGS. 2A and 4A, a plan view that is long in the door lateral movement direction on the center portion of the outer side of the horizontal fixed plate rail 15 c of the lower fixed guide rail 15 that protrudes toward the first lateral movement path 9 side. A rectangular fitting block 76 is attached. As shown in FIG. 1A, when the first door unit 7 moves laterally along the first lateral movement path 9 toward the series closing position, it is attached to the first door unit 7 at the end of the lateral movement stroke. When the guide groove 21a of the fitting portion rail 21 starts to be fitted into the fitting portion block 76 and the first door unit 7 reaches the series closed position, as shown in FIG. The fitting portion block 76 reaches the rear end of 21 a and prevents further lateral movement of the first door unit 7, and reliably prevents the lower end of the first door unit 7 from swinging in the front-rear direction.

  The operation of the sliding door device 1 configured as described above will be described. As shown in FIGS. 1A to 4B, the first door unit 7 and the second door unit 8 are arranged in series in the first lateral movement path 9. When in the series closed position, the opening of the storage space 2 is fully closed by the doors 7 and 8. In this state, the upper end side of the first door 7 at the fixed position P1 (see FIG. 1A) on the first lateral movement path 9 is connected to the first upper fixed guide rail 11 via the pair of roller units 17A and 17B. The guide groove 21a of the fitting part rail 21 on the first door unit 7 side is fitted to the fitting part block 76 attached to the lower fixed guide rail 15 at the lower end side. Therefore, the first door unit 7 is held in a vertical posture at a fixed position P1 on the first lateral movement path 9.

  On the other hand, the upper end side of the second door unit 8 at the fixed position P2 (see FIG. 1A) on the first lateral movement path 9 is in the retracted posture of the suspension means 32 on the second upper fixed guide rail 12. The main guide roller 73 at the free end of the lower link 70 in the retracted position parallel to the inner parallel link 34 of the suspending means 32 is suspended by the upper parallel links 34, 35. The secondary guide roller 74 at the free end of the lower link 70 is fitted into the main rail groove 24 a of the guide rail 24, and the guide roller fitting recess at the inner end of the secondary rail groove 24 b of the second lower guide rail 24. 24c is fitted. In the lower link 70, the cam driven roller 72 of the control lever 69 is fitted to the back end of the inclined cam groove portion 19a of the lower cam rail 19 of the first door unit 7, and the fixed position P1 as described above. Since the first door single unit 7 held in the vertical posture is held in a fixed posture, the second door single unit 8 is also held in the vertical posture at the fixed position P2 on the first lateral movement path 9. Become. The upper parallel links 34 and 35 of the suspending means 32 are held in the retracted position by the action of the parallel link attitude switching holding means 41, and the lower link 70 has the same configuration as the parallel link attitude switching holding means 41. The lower link posture switching holding means 75 holds the retracted posture.

  When opening the right half of the storage space 2 closed by the second single door 8 from the state where the first single door 7 and the second single door 8 are in the series closed position in series in the first lateral movement path 9. The second unit 8 is moved toward the first unit 7 with a certain operating force. As a result, as shown in FIG. 23, a pressing force acts on the free end side of the upper parallel links 34 and 35 suspending the second door unit 8 in the direction in which the first door unit 7 is located, and these upper side parallel links 34 and 35 The upper lateral body 33 supporting the links 34 and 35 tries to laterally move in the same direction, but the cam driven roller 50 of the control lever 49 connected to the inner parallel link 34 is held at the fixed position P1. Since the upper cam rail 18 is fitted in the inclined cam groove 18a of the first door unit 7 side, the control lever 49 and the inner parallel link 34 are centered on the vertical rotation shaft 39 along with the lateral movement of the upper lateral moving body 33. Further, the inner parallel link 34 is forcibly rotated in a direction that changes from the retracted posture to the protruding posture. Accordingly, the second door unit 8 moves backward from the fixed position P2 on the first lateral movement path 9 with the upper side moving body 33 in the direction in which the first door unit 7 is located, while the upper parallel links 34 and 35 are retracted. A parallel movement from the posture to the projecting posture causes the second lateral movement path 10 to move parallel to the outside.

  On the other hand, as shown in FIG. 24A, the lower link 70 that guides the lower end side of the second door unit 8 also has the auxiliary guide roller 74 that guides the inner end of the auxiliary rail groove 24 b of the second lower guide rail 24. Since it is fitted in the roller fitting recess 24c, it is pushed in the lateral movement direction of the second door unit 8 via the auxiliary guide roller 74 and moves laterally, but the cam driven roller 72 of the control lever 69 is Since it is fitted in the inclined cam groove 19a of the lower cam rail 19 on the single unit 7 side, the lower link 70 is also moved from the retracted position through the control lever 69, like the upper inner parallel link 34. It changes in parallel with the inner parallel link 34 to the protruding posture.

  Due to the above action, the second door unit 8 moved toward the first door unit 7 at the fixed position P1 on the first lateral movement path 9 has its inner end colliding with the inner end of the first unit door 7. Without being pushed together, it moves into the second lateral movement path 10 while being translated outward so as to avoid the inner end portion of the first door unit 7. At this time, as shown in FIG. 23A, the driven member 26 of the back-and-forth movement guide means 25 of the second door unit 8 also moves obliquely forward together with the second door unit 8, so that the vertical pin of the driven member 26 26 c also moves away from the guide member 66 without entering the vertical pin insertion groove 66 d of the guide member 66. As the parallel movement of the second door unit 8 obliquely forward proceeds, the upper parallel links 34 and 35 and the lower link 70 are switched from the retracted position to the protruding position, and the second door unit 8 moves to the first lateral movement path. 9 is translated into the second lateral movement path 10 on the outer side. At this time, as shown in FIG. 9B, the cam driven roller 50 of the control lever 49 of the inner parallel link 34 reaches the outlet of the inclined cam groove portion 18a of the upper cam rail 18 of the first door unit 7 and is shown in FIG. 24B. As described above, the cam driven roller 72 of the control lever 69 of the lower link 70 reaches the outlet of the inclined cam groove 19 a of the lower cam rail 19 of the first door unit 7.

  When the second door unit 8 has been translated from the first lateral movement path 9 into the outer second lateral movement path 10 as described above, as shown in FIG. Since the roller 74 has completely escaped from the guide roller fitting recess 24c at the inner end of the sub rail groove 24b of the second lower guide rail 24, thereafter, the roller 74 is switched to the projecting posture as shown in FIG. 24C. The second door 8 overlaps the second lateral movement path 10 outside the first door 7 at the fixed position P1 on the first lateral movement path 9, leaving the lower link 70 and the control lever 69. As shown in FIG. At this time, the main guide roller 73 of the lower link 70 in the protruding position is relatively moved in a state in which the main guide roller 73 is fitted in the main rail groove 24a of the second lower guide rail 24 of the second door unit 8 and the lower side The sub guide roller 74 of the link 70 moves relatively in the sub rail groove 24 b of the second lower guide rail 24 of the second door unit 8.

  The upper parallel links 34 and 35 in a projecting posture in which the second door unit 8 is suspended are laterally moved integrally with the second door unit 8 while being guided by the second upper fixed guide rail 12 together with the upper side moving body 33. become. Accordingly, the cam driven roller 50 of the control lever 49 of the inner parallel link 34 is disengaged from the inclined cam groove 18a of the upper cam rail 18 of the first door unit 7 and is not controlled, but the upper parallel links 34 and 35 protrude. The posture is held by the parallel link posture switching and holding means 41, and the upper parallel links 34 and 35 do not oscillate beyond the protruding posture. As described above, as shown in FIGS. 25A and 25B, the second door unit 8 is moved to the opening limit position P3 that overlaps the outside of the first door unit 7 at the fixed position P1 on the first lateral movement path 9. By laterally moving, the right half of the opening of the storage space 2 can be opened. The open limit position P3 of the second door unit 8 at this time is such that the pair of upper and lower contact members 27a, 27b on the second door unit 8 side are in the fixed position P1, as shown in FIG. 25A. It is determined by coming into contact with the notch step 7a at the inner end.

  As shown in FIG. 25A, when the second door unit 8 that has been opened to the opening limit position P3 is returned to the home position P2 on the first lateral movement path 9 again, the second door unit 8 is moved to the first position. The lateral movement may be performed in the opposite direction on the two lateral movement paths 10. In this case, the upper parallel links 34 and 35 and the lower link 70 work until the inner end of the second door unit 8 reaches a position overlapping the inner end of the first door unit 7 at the fixed position P1. The second door unit 8 linearly moves on the second lateral movement path 10, and then the control lever 49 (cam driven roller 50) of the inner parallel link 34 and the upper side of the first door unit 7. Contrary to when the second door unit 8 is opened by the action of the cam rail 10 and the control lever 69 (cam driven roller 72) of the lower link 70 and the lower cam rail 19 of the first door unit 7, The two-piece single body 8 can move inwardly in the first lateral movement path 9 and return to the home position P2 on the first lateral movement path 9.

  In addition, as shown in FIG. 9B, the second door unit 8 is opened from the fixed position P2, and as shown in FIG. 9B, from the stopper means 67 built in the upper cam rail 18 of the first door unit 7, Since the cam follower roller 50 of the control lever 49 is separated, the movable body 67a of the stopper means 67 returns to the limit position by the urging force of the compression coil spring 67c and is provided below the movable body 67a. The stopper portion 67d is close to the outer surface of the second upper fixed guide rail 12 located on the inner side. Accordingly, when the closing operation for returning the second door unit 8 from the opening limit position P3 to the original fixed position P2 is performed as described above, the first door unit 7 is fixed at a fixed position due to friction or an erroneous operation. Even if an external force in a direction away from P1 is received, immediately after that, the stopper portion 67d comes into contact with the side surface of the stopper main body 68 attached to the second upper fixed guide rail 12, and the first door unit 7 is There is no lateral movement in the direction away from the home position P1 on the first lateral movement path 9.

  When the left half of the storage space 2 closed by the first door single unit 7 is opened from the state where the first door single unit 7 and the second door single unit 8 are in the series closed position shown in FIG. 7 is moved toward the second single unit 8 with a certain operating force. As described above, the stopper means 67 provided in the upper cam rail 18 of the first door unit 7 as shown in FIG. 9A in the state where the both door units 7 and 8 are in the series closed position, as shown in FIG. Is in a released state away from the outer surface of the second upper fixed guide rail 12, the lateral movement of the first door 7 toward the second door 8 can be performed without hindrance. Thus, as shown in FIGS. 17A and 17B, the second door unit 8 at the fixed position P <b> 2 on the first lateral movement path 9 has the driven member 26 in the longitudinal movement guide means 25 of the second door unit 8. The guide roller 26b is adjacent to the inside of the guide roller receiving plate portion 66c of the guide member 66, and can translate linearly forward.

  Therefore, when the first door unit 7 is moved toward the second door unit 8 in order to open the left half of the storage space 2, the second door unit 8 is received by the longitudinal movement guide means 25 as described above. 27A and 27B, as shown in FIGS. 27A and 27B, the control lever 49 (cam driven roller 50) of the inner parallel link 34, the upper cam rail 10 of the first door unit 7, and the lower The upper parallel links 34 and 35 and the lower link 70 pivotally support the upper parallel links 34 and 35 by the action of the control lever 69 (cam driven roller 72) of the side link 70 and the lower cam rail 19 of the first door unit 7. The upper side moving body 33 and the lower side moving body 16 that pivotally supports the lower link 70 move in a swinging motion from the retracted position to the protruding position while moving in the horizontal direction of the first door 7 alone. The second unit 8 Made to move parallel to the straight forward until the second traverses path 10, a first traverses path above 9 inside the second units alone 8 first units alone 7 traverses.

  When the first door unit 7 is opened, as shown in FIG. 28A, the fitting part rail 21 of the first door unit 7 is detached from the fitting part block 76, and as shown in FIG. The cam follower roller 72 of the control lever 69 of the link 70 is relatively transferred from the inclined cam groove portion 19a of the lower cam rail 19 into the rail groove 20a of the first lower guide rail 20, and the protruding posture of the lower link 70 is changed. Hold. In this way, the first door unit 7 moves laterally on the first lateral movement path 9 from the fixed position P1 to the open limit position P4 shown in FIG. The left half of the opening of the storage space 2 that has been closed can be opened. The opening limit position P4 of the first door unit 7 is defined by the pair of upper and lower contact members 27a and 27b of the second door unit 8 translated in parallel to the outside of the fixed position P2 on the first lateral movement path 9. 7 is a position where the notch step 7a at the inner end of the abutment 7 abuts.

  As described above, when the first door unit 7 is laterally moved to the opening limit position P4 and the left half of the opening of the storage space 2 is opened, as shown in FIG. The driven member 26 in the moving guide means 25 is in a state where it has moved to the forward movement limit position with respect to the guide member 66 fixed to the second upper fixed guide rail 12, and the vertical pin 26c of the driven member 26 is the guide member. The vertical pin insertion groove 66d of 66 is inserted to the far end. Therefore, in this state, the second door unit 8 cannot be laterally moved on the second lateral movement path 10. When returning the first door single unit 7 at the opening limit position P4 to the original fixed position P1, as shown in FIGS. 29A and 29B, the first door single unit at the opening limit position P4 inside the second door single unit 8 is provided. Since the outer end of 7 projects from the inner end of the second door unit 8, an operating force is applied to the outer end of the first unit 7, and the first unit 7 is moved in the first lateral movement path. By moving horizontally on 9 and returning to the original home position P1, the entire opening of the storage space 2 can be fully closed by the single doors 7 and 8 in the series closed position.

  As described above, when the first door unit 7 at the open limit position P4 is moved sideways to the original fixed position P1, the inner end portion of the first door unit 7 is positioned outside the fixed position P2. The upper parallel links 34 and 35 and the lower link 70 are operated by the parallel link posture switching holding means 41 and the lower link posture switching holding means 75 until reaching a position overlapping the inner end of the second door unit 8. The second door unit 8 is held on the second lateral movement path 10 outside the fixed position P2, and the first door unit 7 returns to the fixed position P1. Has no effect. Due to the lateral movement of the first door single unit 7 after the inner end of the first door single unit 7 has reached a position overlapping the inner end of the second door single unit 8 located outside the fixed position P <b> 2, the inner side is parallel. The control lever 49 (cam driven roller 50) of the link 34 and the upper cam rail 10 of the first door unit 7 and the control lever 69 (cam driven roller 72) of the lower link 70 and the lower cam rail 19 of the first door unit 7 As a result, the upper side moving body 33 that supports the upper parallel links 34 and 35 and the lower side moving body 16 that supports the lower link 70 are laterally moved in the lateral movement direction of the first door unit 7. Thus, the second door unit 8 is linearly translated from the second lateral movement path 10 to the fixed position P2 on the first lateral movement path 9 while being guided by the longitudinal movement guide means 25. As a result, as shown in FIG. 1A, the first door unit 7 and the second door unit 8 are arranged on the notch step portion 7a at the inner end of the first unit unit 7 that has reached the fixed position P1, as shown in FIG. It returns to the original series closed position where the overhanging plate portion 8a at the inner end overlaps.

  In addition, the attached figure which shows the Example of this invention changes the size ratio of a mechanism and the door simple substance 7 and 8 so that a mechanism may be understood easily, and the size of the door simple substance 7 and 8 compared with the size of a mechanism. Is expressed very small. Therefore, when the first door unit 7 is opened to the opening limit position P4 and when the second door unit 8 is opened to the opening limit position P3, the lower side of the two doors unit 7 and 8 is projected to the inside. Although the protruding length of the fixed guide rail 15 is expressed relatively large as shown in FIGS. 25B and 29B, in actuality, the lateral movement length of the lower lateral movement body 16 is determined by the links 34, 35, 70 is a length determined in relation to the amount of movement in the door lateral movement direction of the link tip when swinging between the retracted posture and the protruding posture, and is the actual size of the single doors 7 and 8 (horizontal It is very short compared to (width), so it is less likely to get in the way.

  The sliding door device according to the present invention is configured such that an arbitrary one of the two door units is laterally moved so as to overlap the other door unit from a state in which the opening of the storage space is closed by the two door units. The left and right halves of the opening can be opened, and when the opening is closed with two single doors, the two single doors are placed in series on a straight line, It can be used as a sliding door device that can be used.

DESCRIPTION OF SYMBOLS 1 Sliding door apparatus 2 Storage space 7 1st door simple substance 7a Notch step part 8 2nd door simple substance 8a Thin wall extension board part 9 1st lateral movement path 10 2nd lateral movement path 11 1st upper fixed guide rail 12 2nd upper side Fixed guide rail 14 Door unit lower end side guide means 15 Lower fixed guide rail 16 Lower lateral moving body 17A, 17B Roller unit 18, 19 Cam rail 18a, 19a Inclined cam groove portion 20 First lower guide rail 21 Fitting portion rail 22 , 23 Link shaft support member 24 Second lower guide rail 24a Main rail groove 24b Sub rail groove 24c Guide roller fitting recess 25 Front / rear movement guide means 26 of the second door unit 8 26 Drive member 26a, 30a, 30b Guide roller 26c Vertical Pin 27a, 27b Contact member 29 Movable body 31 Stopper piece 32 Suspension means 33 Upper laterally movable body 34, 35 Upper parallel link 36, 37 Lateral motion unit 36a, 37a Support roller 38 Connecting member 39 Parallel link support vertical rotating shaft 41 Parallel link attitude switching holding means 42 Switching cam 43 Engagement piece 43a, 67c Compression coil spring 46 Thrust Bearing 47 Radial bearing 49, 69 Control lever 50, 72 Cam driven roller 53, 54 Bearing member 55 Insert hole 56, 62 Notch long hole portion 57, 63 Retaining elastic tongue piece 57a, 63a Check protrusion 58 Locking hole 61 concave portion 64 locking concave portion 66 guide member 66c guide roller receiving plate portion 66d vertical pin insertion groove portion 67 stopper means 67a movable body 67b cam groove portion 67d stopper portion 68 stopper main body 70 lower link 73 main guide roller 74 sub guide roller 75 lower Side Click attitude switching holding means 76 fitting portion block

The present invention proposes a sliding door device that can solve the conventional problems as described above. The sliding door device according to the present invention includes an inner first lateral movement path, A second lateral movement path that overlaps the outside of one lateral movement path, a first door unit that can laterally move within the entire area of the first lateral movement path, and a front and rear between the first lateral movement path and the second lateral movement path The first door unit and the second door unit are connected in series in the first lateral path and are closed in series. In the sliding door device configured to block the entire area of the first lateral movement path when in the position, the second door alone is attached to the upper lateral movement body disposed inside the first lateral movement path. It is suspended so that it can move back and forth in parallel via a pair of upper side parallel links that cross the upper side of one lateral movement path. In addition, on the floor side inside the central region in the length direction of the first lateral movement path, one lower arm that is horizontally swingable and has the same size as the upper parallel link is provided. The second door unit is pivotally supported so as to cross the lower side, and a lower guide rail to which the roller at the free end of the lower arm is always engaged is provided. The front-rear direction position on the lower end side of the second door unit during lateral movement in the second lateral movement path is regulated by the one lower arm .

The sliding door device configured as described above is used so as to close the opening of the storage space by the first and second doors alone in the series closing position, and the opening of the storage space is closed. From the state, when opening the area where the first door unit was located, the second unit was moved forward into the second lateral movement path, and the first unit was placed inside the second unit. When the first door unit is opened in the first lateral movement path so as to overlap the single unit and returned to the original closed state, the first door unit is closed in the first lateral movement path to the original position. Later, the second single unit in the second lateral movement path may be translated into the original first lateral movement path. When opening the area where the second door unit on the opposite side was located, move the second unit alone forward into the second lateral movement path, and then move the second unit to the outside of the first unit. When the second door unit is opened in the second lateral movement path and returned to the original closed state, the second door unit is closed in the second lateral movement path, What is necessary is just to translate into the 1st lateral movement path | route. As described above, the opening and closing of the opening of the storage space requires the parallel movement of the second door alone and the lateral movement of the second door alone in the second lateral movement path. For example, the upper side of the second door unit is conventionally suspended from the upper side moving body via a pair of upper parallel links in the door side movement direction. One lower arm that is pivotally supported on the floor side inside the central region in the length direction of the moving path, and a lower guide on the second door unit side that engages with the free end roller of the lower arm When the second door unit is opened, the floor side has one lower arm on the inner side of the central region in the length direction of the first lateral movement path. There is only a means to support the lower arm, and there is no risk of adversely affecting the passage of people in and out of the open area. Less and less, even to improve safety.

When carrying out the present invention described above, specifically, on the floor surface inside the central region, one lower lateral supported by the lower fixed guide rail so as to be movable only within a certain range. A moving body is provided, the lower arm is pivotally supported by the lower lateral body, and the first door unit is connected to the first upper fixed guide rail via a pair of door lateral direction roller units attached to the upper end side thereof. The inside of the first lateral movement path is suspended so as to be laterally movable, and the upper and inner parallel links on the inner side close to the first door alone among the pair of upper parallel links in the door lateral movement direction, and the lower arm A control lever having a cam driven roller pivotally supported at its free end is connected to the upper inner parallel link and the lower arm in a reverse diagonally forward direction. When the single unit is in the series closed position, the cam driven rollers of the upper and lower control levers are engaged and disengaged. A pair of upper and lower cam rails and a first lower guide rail that engages with a cam driven roller of a lower control lever that is disengaged from the lower cam rail, and the pair of upper and lower cam rails are in the series closed position. When the single unit of the single unit and the single unit of the second unit are moved relatively close to each other, the upper inner parallel link and the lower arm are swung in conjunction with the projecting posture from the retracted position to the forward position. It can be set as the structure which has the length which remove | deviates from the cam follower roller of an up-and-down both control lever, after making it translate in the 2nd lateral movement path | route from the inside of a 1st lateral movement path | route.

  According to the above configuration, when the first door alone is pushed to the side where the second door alone is located in the first second door alone in the series closed position, the upper and lower cam rails on the first door alone side are Of the pair of upper parallel links that suspend the single unit, swing the upper inner parallel link and the lower arm on the floor side into a posture that projects forward through the control levers provided respectively, While moving the second door alone from the first lateral movement path into the outer second lateral movement path, the first door alone moves laterally within the first lateral movement path and enters the inside of the second door single movement. Therefore, by moving the first door alone to the end of the first lateral movement path as it is, the half area on the side where the first door alone was present can be released within the full width of the opening. At this time, the parallel movement of the second door unit forward is performed as the pair of upper parallel links and one lower arm swing around the fulcrum on the second unit unit side. In this case, an upper lateral body that pivotally supports the pair of upper parallel links and a lower lateral body that pivotally supports the lower arm are equivalent to the swing angle of the pair of upper parallel links and one lower arm. It will move sideways in the direction of the single unit. Further, the lateral movement of the first door alone causes the cam driven roller of the control lever of the lower arm to come out of the lower cam rail of the first door alone, but the cam driven roller continues to move to the first lower guide rail. The position of the lower arm that has been switched to the position of projecting forward is continuously maintained as it is, as the first door alone moves sideways and moves relatively within the first lower guide rail. The

Contrary to the above, when the second single door is pushed to the side where the first single door is located, the upper and lower sides of the first single door side are Since both cam rails work and the second door unit moves from the first lateral movement path to the outer second lateral movement path, it moves to the outside of the first door unit. By laterally moving the single body to the end of the second lateral movement path, it is possible to release the half area on the side where the second door single body was present out of the full width of the opening. In this case, in a state where the pair of upper parallel links that suspend the single unit of the second door is changed to a posture projecting forward, the pair of upper side parallel links with the second side of the single unit together with the upper side moving body, The cam follower roller of the control lever of the upper inner parallel link is separated from the upper cam rail of the first door alone, but is changed to a posture protruding forward by the lower cam rail of the first door alone. Since the free end roller of the lower arm relatively moves in the second lower guide rail of the second door unit, the second door unit is continuously maintained in a position to move laterally in the second lateral movement path. . In addition, when the lower arm changes to a posture that protrudes forward by the lower cam rail of the first door unit, the lower arm is moved together with the lower lateral body by the swing angle of the lower arm. Will move sideways in the direction of lateral movement.

According to the above configuration, the lower lateral moving body that holds the lower end side of the first second door unit alone and the lower arm (including the control lever) that is pivotally supported by the lower side moving body are the first second door unit alone. Therefore, as compared with the case where a dedicated holding means is provided for each of the first and second doors alone, the configuration of the entire apparatus becomes very simple and can be implemented at a low cost. Furthermore, on the floor side, the swing of the parallel link that suspends the second door unit so that it can be translated back and forth at the center in the width direction of the opening that is closed by the first second door unit that is closed in series. It is only necessary to provide a lower laterally movable body that can laterally move only within a range corresponding to about twice the moving angle, and to support the lower laterally movable body with one lower arm provided with a control lever. That is, when the first single door or the second single door is opened, the floor side is moved by the overlap of the first single door and the second single door, and the lateral movement of the lower lateral moving body is started. About half of the route is overhanging, and there is very little risk of adversely affecting the passage of people and taking in and out of luggage in an open area, and safety is improved. In addition, the lower fixed guide rail is constructed to be spaced upward from the floor surface, and the lower arm and the lower control lever extend forward between the lower fixed guide rail and the floor surface. It can be made to come out. According to this configuration, the configuration of the present invention is easy in a situation where the floor surface of the storage space opened and closed by the sliding door device cannot be easily dug as in the case where the floor surface is configured with concrete. Can be implemented.

FIG. 1A is a plan view of a state in which the opening is closed between the first door unit and the second door unit in the series closed position, and FIG. 1B is a front view with the same part cut away. 2A and 2B are cross-sectional plan views at different heights of FIG. 1B. 3A is an enlarged right side view of FIG. 1B, and FIG. 3B is an enlarged sectional view taken along line AA of FIG. 1B. 4A is an enlarged sectional view taken along line BB in FIG. 1B, and FIG. 4B is an enlarged sectional view taken along line CC in FIG. 1B. FIG. 5 is a partially cutaway front view of the first door unit as viewed from the back side. 6A is a plan view of the upper half of FIG. 5, FIG. 6B is a cross-sectional view of the upper half of FIG. 5 along the line DD, FIG. 6C is a cross-sectional view of the lower half of FIG. FIG. 6D is a bottom view of the lower half of FIG. FIG. 7A is a partially cutaway front view of the second door as viewed from the back side, FIG. 7B is a plan view of the upper half of FIG. 7A, and FIG. 7C is a bottom view of the lower half of FIG. FIG. 8A is a longitudinal side view showing the stopper means attached to the upper inner end of the first door alone and the first second upper fixed guide rail on the housing side, and FIG. 8B is a front view showing only the stopper means. FIG. 8C is a partially cross-sectional plan view showing only the stopper means. FIG. 9A is a partially cut-away enlarged plan view of the main part showing the released state of the stopper means in the door closing completion state shown in FIG. 1A, and FIG. 9B is the main part showing the state where the stopper means has returned to the operating state. It is a partially cutaway enlarged plan view. FIG. 10A is a front view showing a suspension roller unit of the first door alone, FIG. 10B is a plan view thereof, and FIG. 10C is a longitudinal side view thereof. FIG. 11A is a partially cutaway plan view showing the second door alone and its hanging means, and FIG. 11B is a partially cutaway front view of the hanging means. FIG. 12A is a cross-sectional plan view of the parallel link connecting portion at the upper inner end of the second door alone, and FIG. 12B is a partially longitudinal side view showing a state before the parallel link connecting portion is connected. FIG. 13A is a cross-sectional plan view showing the parallel link connecting portion at the upper outer end of the second door alone in a state before connection, and FIG. 13B is a partially longitudinal side view of FIG. 13A. FIG. 14A is a cross-sectional plan view showing the parallel link connecting portion in the upper part of the outer end of the second door alone in a connected state, and FIG. 14B is a front view of the parallel link connecting portion seen from the inside of the second door alone. is there. 15A is a plan view showing a guide member on the housing side in the longitudinal movement guide means of the second door alone, FIG. 15B is a front view thereof, FIG. 15C is a bottom view thereof, and FIG. 15D is a left side view thereof. 16A is a cross-sectional view taken along line FF in FIG. 15B, FIG. 16B is a cross-sectional view taken along line GG in FIG. 15B, and FIG. 16C is a plan view showing a driven member on the second door unit side in the longitudinal movement guide means. 16D is a right side view of FIG. 16C, and FIG. 16E is a front view of the driven member as viewed from the back side of the second door alone. 17A and 17B are cross-sectional plan views at different heights showing the longitudinal movement guide means when the second door unit is in the series closed position shown in FIG. 1A. FIGS. 17C and 17D show the second door It is a cross-sectional top view in different height which shows the said back-and-forth movement guide means when a single body advances from the serial closed position shown in Drawing 1A to the advance limit position. FIG. 18A is a cross-sectional plan view for explaining the suspension means of the second door alone, and FIG. 18B is an enlarged cross-sectional plan view showing one of the laterally moving bodies used in the suspension means. FIG. 19A is a longitudinal side view of the parallel link support portion of the laterally movable body shown in FIG. 18B, and FIG. 19B is a longitudinal side view of another part of the laterally movable body. FIG. 20 is a cross-sectional plan view showing a state in which the parallel link in the suspension means of the second door alone in the state shown in FIG. 18A is switched from the retracted position to the protruding position. FIG. 21A is a partially longitudinal front view showing a door single unit lower end side guiding means disposed in the center portion on the floor side, and FIG. 21B is a longitudinal sectional side view of the same portion. FIG. 22 is a cross-sectional plan view showing a lower laterally movable body and a lower link of the door unit lower end side guiding means shown in FIG. 21A. Figure 23 A is a two units alone plan view of a state in which begins to opening motion outside the first units alone was in series closed position shown in FIG. 1A, FIG. 23B is a portion cross-enlarged plan view of the main part It is. 24A is a cross-sectional plan view showing the lower link operating state of the door unit lower end side guiding means in the situation shown in FIG. 23, and FIG. 24B is a situation in which the degree of opening of the second door unit shown in FIG. 24A is further advanced. FIG. 24C is a cross-sectional plan view in a state where the degree of opening of the second door unit shown in FIG. 24B has further advanced. FIG. 25A is a plan view of a state in which the second door unit in the series closed position shown in FIG. 1A is opened to the open limit that overlaps the outside of the first unit unit, and FIG. 25B is a partially cutaway front view thereof. is there. FIG. 26 is a right side view of FIG. 25B. FIG. 27A is a partially cutaway plan view of the main part in a state in which the first door unit, which was in the series closed position shown in FIG. 1A, has begun to open to the inside of the second door unit, and FIG. 27B is shown in FIG. 27A. It is a partially notched top view of the principal part in the state which opened the 1st door simple substance from the position. 28A and 28B are cross-sectional plan views at different heights of FIG. 27B. FIG. 29A is a plan view of a state in which the first door unit that was in the series closed position shown in FIG. 1A is opened to the open limit that overlaps the inside of the second door unit, and FIG. 29B is a partially cutaway front view thereof. is there. 30 is a cross-sectional view taken along line FF in FIG. 29B.

The present invention proposes a sliding door device that can solve the conventional problems as described above. The sliding door device according to the present invention includes an inner first lateral movement path, A second lateral movement path that overlaps the outside of one lateral movement path, a first door unit that can laterally move within the entire area of the first lateral movement path, and a front and rear between the first lateral movement path and the second lateral movement path The first door unit and the second door unit are connected in series in the first lateral path and are closed in series. In the sliding door device configured to block the entire area of the first lateral movement path when in the position, the second door alone is attached to the upper lateral movement body disposed inside the first lateral movement path. It is suspended so that it can move back and forth in parallel via a pair of upper side parallel links that cross the upper side of one lateral movement path. In addition, on the floor side inside the central region in the length direction of the first lateral movement path, one lower arm that is horizontally swingable and has the same size as the upper parallel link is provided. The second door unit is pivotally supported so as to cross the lower side, and a lower guide rail to which the roller at the free end of the lower arm is always engaged is provided. In the sliding door device configured such that the position in the front-rear direction on the lower end side of the second door alone during lateral movement in the second lateral movement path is regulated by the one lower arm ,
On the floor surface inside the central region, there is provided one lower laterally movable body that is supported by the lower fixed guide rail so as to be laterally movable only within a certain range. An arm is pivotally supported, and a cam driven roller is pivotally supported at the free end of the upper side inner parallel link close to the first door alone of the pair of upper side parallel links in the door lateral movement direction and the lower arm. The control lever is connected to the upper inner parallel link and the lower arm in an obliquely forward direction, and when the first second door unit is in the series closed position, A pair of upper and lower cam rails on which the cam driven rollers of the upper and lower control levers can be freely engaged and disengaged, and a first lower guide rail that engages with the cam driven roller of the lower control lever detached from the lower cam rail are attached. The cam rail is in the series closed position When the single unit of the single unit and the single unit of the second unit are moved relatively close to each other, the upper inner parallel link and the lower arm are swayed in conjunction with the projecting posture from the retracted position to the forward position to After the parallel movement from one lateral movement path to the second lateral movement path, the length is such that the upper and lower control levers are separated from the cam driven rollers .

Further, in the configuration of the present invention , when the first door alone is pushed to the side where the second door alone is located, the upper and lower cam rails on the first door alone side are Of the pair of upper parallel links that suspend the single unit of the second door, the upper inner parallel link and the lower arm on the floor surface are swung into a posture projecting forward through the control levers provided respectively. , While the second door alone is translated from the first lateral movement path into the outer second lateral movement path, the first door alone moves laterally in the first lateral movement path to the inner side of the second door single movement. Therefore, by moving the first door alone to the end of the first lateral movement path as it is, half the area on the side where the first door alone was located can be released within the full width of the opening. . At this time, the parallel movement of the second door unit forward is performed as the pair of upper parallel links and one lower arm swing around the fulcrum on the second unit unit side. In this case, an upper lateral body that pivotally supports the pair of upper parallel links and a lower lateral body that pivotally supports the lower arm are equivalent to the swing angle of the pair of upper parallel links and one lower arm. It will move sideways in the direction of the single unit. Further, the lateral movement of the first door alone causes the cam driven roller of the control lever of the lower arm to come out of the lower cam rail of the first door alone, but the cam driven roller continues to move to the first lower guide rail. The position of the lower arm that has been switched to the position of projecting forward is continuously maintained as it is, as the first door alone moves sideways and moves relatively within the first lower guide rail. The

Therefore, according to the configuration of the present invention, the lower laterally movable body that holds the lower end side of the first second door unit alone and the lower arm (including the control lever) pivotally supported by the first lateral door Since one common to both two-door units is sufficient, compared with the case where a dedicated holding means is provided for each of the first and second two-door units, the overall configuration of the device is very simple and implemented at low cost. I can do it. Furthermore, on the floor side, the swing of the parallel link that suspends the second door unit so that it can be translated back and forth at the center in the width direction of the opening that is closed by the first second door unit that is closed in series. It is only necessary to provide a lower laterally movable body that can laterally move only within a range corresponding to about twice the moving angle, and to support the lower laterally movable body with one lower arm provided with a control lever. That is, when the first single door or the second single door is opened, the floor side is moved by the overlap of the first single door and the second single door, and the lateral movement of the lower lateral moving body is started. About half of the route is overhanging, and there is very little risk of adversely affecting the passage of people and taking in and out of luggage in an open area, and safety is improved. In addition, the lower fixed guide rail is constructed to be spaced upward from the floor surface, and the lower arm and the lower control lever extend forward between the lower fixed guide rail and the floor surface. It can be made to come out. According to this configuration, the floor surface of the storage space that is opened and closed by the sliding door device can be easily implemented even in a situation where it cannot be easily dug as in the case where the floor surface is made of concrete. I can do it.

Claims (4)

  An inner first lateral path, a second lateral path overlapping the outside of the first lateral path, a first upper fixed guide rail and a second upper fixed guide rail disposed inside the first lateral path, A single door unit and a second door unit that can be positioned in a series closed position that covers the entire area of the first lateral movement path in series within the first lateral movement path are provided. The first door is fixed to the first upper fixed guide rail through the pair of roller units in the lateral direction so that the entire second lateral path can be freely moved. The upper lateral body supported laterally by the guide rail can be moved back and forth between the first lateral path and the second lateral path via a pair of upper parallel links in the door lateral direction. And the pair of upper parallel links are suspended in the entire area of the second lateral movement path so as to be laterally movable. When both doors are in the series closed position, they are in a retracted posture that extends obliquely forward from the upper laterally movable body to the side opposite to the side where the first door alone is present, and in the length direction of the first lateral path A lower fixed guide rail is provided on the floor side inside the central region, and one lower laterally movable body supported by the lower fixed guide rail so as to be laterally movable only within a certain range includes One lower arm that is horizontally swingable and has the same size as the upper parallel link is close to the first door alone of the pair of upper parallel links when the first second door single door is in the series closed position. The roller at the free end of this lower arm is supported by the second lower guide rail attached to the lower end side of the second door alone in the door lateral movement direction. Engage in a laterally movable manner, the upper inner parallel link and the lower arm have a cam driven low at the free end. A control lever that is pivotally supported is connected to the upper inner parallel link and the lower arm in a reverse diagonally forward direction, and the first second door unit has the first second door unit in the series closed position. A pair of upper and lower cam rails in which the cam driven rollers of the upper and lower control levers can be freely engaged and disengaged, and a first lower guide rail that engages with the cam driven rollers of the lower control lever detached from the lower cam rail are attached. The pair of upper and lower cam rails move the upper inner parallel link and the lower arm forward from the retracted posture when the first door unit and the second door unit in the series closed position are moved relatively close to each other. After the second door unit is translated from the first lateral movement path into the second lateral movement path in conjunction with the projecting posture of Sliding door device.   The lower fixed guide rail is constructed to be spaced upward from the floor surface, and the lower arm and the lower control lever extend forward between the lower fixed guide rail and the floor surface. The sliding door device according to claim 1.   The floor side and the first door alone inside the central region in the length direction of the first lateral movement path are fitted to each other when the first door alone reaches the series closed position, and the first The sliding door device according to claim 1 or 2, wherein a fitting portion that regulates a position in a front-rear direction on a lower end side of the single unit is provided. The said fitting part is comprised by the block attached to the said lower side fixed guide rail, and the guide rail of the groove-shaped cross section along the door lateral movement direction attached to the 1st door simple substance. Sliding door device as described in.

Images