JP6196360B1 - Sliding door device - Google Patents

Abstract

Provided is a sliding door device in which, when an opening portion is closed by two single doors, the two single doors are arranged in series on a straight line so as to face each other. A second door single body 8 that laterally moves on a second lateral movement path 10 outside the first lateral movement path 9 in which the first door single body 7 laterally moves is paired with an upper lateral movement body 33 at its upper end side. The lower lateral motion body 16 is provided inside the central portion in the length direction of the first lateral motion path 9 and is pivotally supported by the lower lateral motion body 16. The main guide roller 73 at the free end of the lower arm 70 is engaged with the lower second guide rail 24 of the second door unit 8, and the inner parallel link 34 and the lower arm 70 are cammed at the tip. Control levers 49 and 69 having driven rollers 50 and 72 are connected to each other, and the first door 7 has an upper cam rail 18 that engages with the cam driven roller 50 and a lower cam rail 19 that engages with the cam driven roller 72. And are provided. [Selection] 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 of the storage 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 having a long overall length on the floor side and a long laterally movable body capable of pivotally supporting a pair of parallel links on the lower side are necessary, resulting in a 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, 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. From the fully closed state at the position, the first single door open state where the first single door overlaps inside the second single door at the series closed position, and the second outside the first single door at the series closed position. In the sliding door device configured to be switchable to the second door open state where the doors overlap,
The second door unit can be moved back and forth in parallel via a pair of upper parallel links in the door lateral movement direction to the upper lateral movement body that can move laterally across the entire area of the second lateral movement path in parallel with the second lateral movement path. On the floor side, a lower fixed guide rail shorter than the length of the first lateral movement path is formed on the floor surface inside the central region in the length direction of the first lateral movement path. One lower laterally movable body is fitted and supported in a grooved rail portion that is fitted and fixed in the concave groove, and the upper side of the lower fixed guide rail is released, and on the upper side of the lower laterally movable body, A second lower guide rail in which a horizontally swingable lower arm of the same size as the upper parallel link is pivotally supported, and a free end roller of the lower arm is always engaged with the second door alone. Of the pair of upper side parallel links in the lateral direction of the door, A control lever having a cam driven roller pivotally supported at its free end is connected to the link and the lower arm in a reverse diagonally forward direction with respect to the upper inner parallel link and the lower arm. Includes a pair of upper and lower cam rails to which the cam driven rollers of the upper and lower control levers engage when the first second door unit is in the series closed position, and a lower cam rail in the pair of upper and lower cam rails. A first lower guide rail that engages with the cam driven roller of the lower control lever that is disengaged from the first control unit. The upper inner parallel link and the lower arm are interlocked and swung from the retracted position to the forward protruding position to move the second door unit from the first lateral movement path to the second lateral movement. After translating into the path It is configured to have a length that deviates from the cam follower roller of the upper and lower control lever.

  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. Then was, it can be a state opened the first units alone. 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. In addition, due to the lateral movement of the first door alone, the cam driven roller of the control lever of the lower arm is detached from the lower cam rail of the first door alone, but the cam driven roller is subsequently moved by the first door alone. The lower arm that has been switched to a posture that projects forward because it moves into the first lower guide rail and moves relatively within the first lower guide rail as the first door alone moves laterally. The posture is continuously maintained as it is.

  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 Both cam rails work and the second door alone moves in parallel to the outside from the first lateral movement path to the second lateral movement path outside the first door alone. By moving the single unit to the end of the second lateral movement path, the half of the full width of the opening is released in the half area on the side where the second single unit was located. I can do it. 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, the first door simple substance and the second door simple substance are closed in series even though the second door simple substance has a structure in which the upper end side is suspended. The position of the lower end side of the second door unit in the front-rear direction is the lower side of the floor side in either state when the first unit is opened or the second unit is opened. Since it is held in a fixed position via the lower arm that is pivotally supported by the moving body, this second door unit can be stably and smoothly moved without swinging in the front-rear direction about the suspended position on the upper end side. The opening can be opened and closed by lateral movement.

  Moreover, according to the configuration of the present invention described above, the lower laterally movable body that pivotally supports the lower arm is closed in the width direction of the opening that is closed by the first second door alone in the series closed position. In addition, only one lower moving body is disposed in the center portion of the door in accordance with the swing of the pair of upper parallel links in the lateral movement direction when the second door unit is translated back and forth. Therefore, the length of the lower fixed guide rail that supports the lower lateral movement body in a laterally movable manner is extremely small. Can be short. Further, the lower fixed guide rail is fitted and fixed in a concave groove formed on the floor surface, and the lower lateral moving body is also fitted in the concave groove rail portion on the upper side of the lower fixed guide rail. Therefore, it is possible to configure so that only the lower arm and the control lever that are pivotally supported by the lower laterally movable body protrude above the floor surface of the opening. Of course, even if the lower arm posture switching holding means for controlling the posture of the lower arm and the control lever is supported by the lower lateral body above the lower arm, the lower lateral body is not connected to the second door. As the single unit moves back and forth in parallel, it moves sideways in the lateral movement direction of the single door to be opened, so when the first single door is open or the second single door is open, It can be configured to be hidden in an area that is closed by overlapping with a single unit. Therefore, from the area closed by the overlap between the first door unit and the second unit unit, the lower fixed guide that supports the lower laterally movable body so as to be laterally movable and is entirely or partially buried under the floor surface. It can be configured so that the end of the rail in the longitudinal direction only protrudes, and there is very little risk of adversely affecting the passage of people on the floor surface of the open opening and the loading and unloading of luggage. Also improves.

  In the case of carrying out the present invention, the first door unit is fixed at the upper and lower two locations on the upper and lower sides so that it can move laterally on the entire first lateral movement path in a vertical position. The guide rail may be supported via a roller, but in order to regulate the position of the lower end of the second door alone in the front-rear direction, the cam driven roller at the tip of the lower control lever connected to the lower arm After the first door unit is separated from the lower cam rail of the first door unit, the first lower unit guide rail with which the cam follower roller is fitted is provided on the first unit unit. By restricting the position of the side in the front-rear direction, a dedicated guide rail for guiding the lower end side of the first door alone can be omitted. However, with this configuration alone, when the first door simple substance and the second door simple substance are in the series closed position, any one of the adjacent ends of the first door simple substance and the second door simple substance is When pushed toward the inside of the storage space closed by both doors alone in the series closed position, the lower control lever and the lower arm swing and push the opposite door outward. . In order to eliminate such problems, the first door unit reached the series closed position on the floor side and the first unit alone inside the central region in the length direction of the first lateral movement path. It is sometimes possible to provide a fitting portion that is fitted to each other and restricts the position in the front-rear direction on the lower end side of the first door unit.

  When implementing the configuration using the fitting portion together, a pedestal portion is installed on the upper side of the lower laterally moving body with a horizontal swing space between the lower arm and the lower control lever, and the fitting portion Is composed of a block attached on the pedestal and a guide rail having a groove-shaped cross section attached to the first door along the lateral direction of the door. Compared with a configuration in which a member support structure is provided separately, the structure is simple and can be implemented at low cost. Further, the pedestal portion may be provided with lower arm posture switching holding means for selectively urging and holding the lower arm between a retracted posture and a protruding posture.

FIG. 1A is a plan view of a fully closed state in which the opening portion 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. 9A is a partially cutaway enlarged plan view of the main part showing the released state of the stopper means in the fully closed state shown in FIG. 1A, and FIG. 9B is a main part showing the state in which 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 unit 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. 22A is a cross-sectional plan view showing a lower laterally movable body and a lower arm of the door unit lower end side guide means shown in FIG. 21A, and FIG. 22B is a vertical side view of the door unit lower end side guide means. FIG. 23A is a plan view of a state in which the second door unit, which was in the series closed position shown in FIG. 1A, has started to move outward from the first door unit, and FIG. 23B is a partially cross-sectional enlarged plan view of the main part thereof. is there. 24A is a cross-sectional plan view showing the lower arm operating state of the door unit lower end side guide means in the situation shown in FIG. 23A, 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 HH 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 fully 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 has a first horizontal guide groove 15 in a lower fixed guide rail 15 and a groove groove rail portion 15 a that is open on the upper side of the lower fixed guide rail 15. A lower laterally movable body 16 fitted and supported so as to be laterally movable along the motion path 9 is provided. As shown in FIG. 1B, FIG. 3B, FIG. 4A, the lower fixed guide rail 15 is a peripheral overhanging portion 15b that projects horizontally outward from the upper end of the periphery thereof into a recessed groove portion 3a formed in the floor surface 3. Are fitted so as to abut on the floor surface 3, and appropriate portions of the peripheral overhanging portion 15 b are attached to the floor surface 3 by screws.

  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 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 or 31c. Although the structure 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 present invention is not limited to this configuration.

  When the first door unit 7 is suspended from the first upper fixed guide rail 11 on the horizontal top 5 side so as to be laterally movable, the stopper pieces 31 of the roller units 17A and 17B are in the retracted posture shown by the solid line in FIG. 10C. Keep it. 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.

  As shown in FIG. 18B, 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, 35 in the suspending means 32 having the above-described configuration, the inner upper parallel link 34 on the inner end side of the second door unit 8 is approximately 90 with respect to the length direction of the parallel link 34. A control lever 49 is integrally connected at an angle of degrees, and a cam driven roller 50 is pivotally supported by a 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 shaft support member 22 that pivotally supports the free end portion of the inner upper parallel link 34 is a thick plate having a rectangular cross-sectional shape and a vertical cross-sectional shape, and is perpendicular to one end portion thereof. The support 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 upper parallel link 34. The bearing member 54 combined with the link shaft support member 23 that supports the free end portion of the outer side parallel link 35 on the opposite side is in the shape of a vertically long rectangular column, and the vertical support shaft 52 is supported so as to be able to rotate. The upper end portion of the shaft 52 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 upper parallel link 34 is inserted into the insertion hole 55 of the link shaft 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 fits into each concave groove 60 and the upper end portion of the vertical support shaft 51 fits into the notch slot 56. , The check projection 57a of the retaining elastic tongue piece 57 provided 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 upper parallel link 35 is moved into the recess 61 of the link shaft support member 23 attached to the second door unit 8. The bearing member 54 is provided with a retaining elastic by being fitted horizontally 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 cutout long hole portion 62. The check protrusion 63 a of the tongue 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 follower roller 50 at the tip of the control lever 49 connected to the inner upper parallel link 34 enters the inner end position of the inclined cam groove 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, on the upper side of the lower laterally movable body 16 of the door unit lower end side guiding means 14, a platform portion 77 having the same length as the lower laterally movable body 16 is provided at both ends of the platform portion 77. It is installed horizontally with a predetermined gap between it and a lower lateral movement body 16 via a reverse gate-shaped support frame 78 to be supported, and a control lever 69 is provided between this pedestal portion 77 and the lower lateral movement body 16. A provided lower arm 70 is arranged. The lower arm 70 provided with the control lever 69 is the same as the inner upper parallel link 34 provided with the control lever 49 in the suspension means 32 of the second door unit 8, and is attached to the lower lateral moving body 16. Instead, it is pivotally supported by the upper pedestal 77 by a vertical rotation shaft 71 so as to be swingable horizontally. A cam driven roller 72 is pivotally supported by a vertical support shaft above the free end of the control lever 69, and the second lower guide rail attached to the second door unit 8 is above the free end of the lower arm 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. The lower arm 70 including the control lever 69 can swing horizontally along the floor surface 3 in the gap between the floor surface 3 and the first door unit 7 and the second door unit 8.

  Further, as shown in FIGS. 22A and 22B, parallel link posture switching and holding means 41 used for the suspending means 32 of the second door unit 8 are provided in the upper frame portion 77 of the lower laterally movable body 16. A lower arm posture switching holding means 75 that performs the same operation is provided. As shown in FIG. 22A with the same reference numerals as those shown in FIG. 18B, in the lower arm posture switching holding means 75, the vertical rotary shaft 71 is supported at the center position in the length direction of the gantry 77. The switching cam 42 is attached to the upper end portion of the vertical rotation shaft 71 that enters the gantry portion 77, and the engagement piece 43 is attached to one of the left and right sides of the gantry portion 77 with respect to the switching cam 42. A columnar support member 48a including a compression coil spring 43a is internally provided, and a columnar support member 48b including a pressing piece 44 and a damper 45 is provided on the opposite side. The lower arm posture switching and holding means 75 is configured such that the lower arm 70 is retracted parallel to the retracted posture of the inner upper parallel link 34 in the hanging means 32 of the second door unit 8 and the inner upper parallel link. 34 is selectively switched between the projecting posture of 34 and the projecting posture parallel to the projecting posture. The control lever 69 also maintains a posture that is always parallel to the control lever 49 connected to the inner upper parallel link 34, and the cam driven roller 72 at the free end thereof, as shown in FIG. The lower cam rail 19 attached to the first door unit 7 is fitted into the inclined cam groove 19a and the rail groove 20a of the first lower guide rail 20 connected to the lower cam rail 19 from the bottom upward. To do.

  FIG. 22A shows a state in which the lower arm 70 is in the retracted position. The switching cam 42 indicates that the lower arm 70 in the retracted position rotates clockwise in FIG. 22A to the protruding position. The first projecting portion 42a of the engaging piece 43 is received by the action of receiving the second projecting portion 42b of the switching cam 42 and the action of receiving the second projecting portion 42b of the switching cam 42 by the stepped end surface 44a of the pressing piece 44. When a certain force or more acts on the lower arm 70 in the direction of switching the lower arm 70 from the retracted position to the protruding position, the first protruding portion 42a of the switching cam 42 causes the engagement piece 43 to move to the compression coil spring 43a. While the second projecting portion 42b of the switching cam 42 moves backward against the biasing force of the damper 45, the lower arm 70 in the retracted position is moved backward while moving backward against the biasing force. 22A I have switched to the projection attitude to rotate in a clockwise direction. The projecting posture of the lower arm 70 is such that the first projecting portion 42a of the switching cam 42 prevents the engaging piece 43 from moving forward, and the second projecting portion 42b of the switching cam 42 moves the pressing piece 44 forward. Retained by the blocking action.

  As shown in FIG. 1B, FIG. 2A, FIG. 4A, FIG. 21A and FIG. 21B, the upper frame portion 77 of the lower lateral motion body 16 has a first lateral motion path 9 side at the center position in the length direction. A fitting part block 76 that is long in the lateral direction of the door and is rectangular in plan view is attached via a support member 76a that projects to the outside. 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, prevents further lateral movement of the first door unit 7, and restricts the position of the lower end portion of the first door unit 7 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 portion rail 21 on the first door unit 7 side is fitted to the fitting portion block 76 attached on the lower laterally movable body 16 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 arm 70 which is suspended by the upper parallel links 34 and 35 and is in a retracted posture parallel to the inner parallel link 34 of the suspension means 32 is provided at the lower end side. The single guide 8 is fitted into the main rail groove 24 a of the second lower guide rail 24, and the secondary guide roller 74 at the free end of the lower arm 70 is connected to the secondary rail groove 24 b of the second lower guide rail 24. It is fitted in the guide roller fitting recess 24c at the inner end. The lower arm 70 has a cam driven roller 72 of its control lever 69 fitted into the rear 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 arm 70 has the same configuration as the parallel link attitude switching holding means 41. The lower arm 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 laterally movable body 33 that pivotally supports 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 upper parallel link 34 is held at the fixed position P1. Since the upper cam rail 18 is fitted in the inclined cam groove portion 18a on the first door unit 7 side, the control lever 49 and the inner upper parallel link 34 are connected to the vertical rotation shaft 39 in accordance with the lateral movement of the upper lateral moving body 33. The inner parallel link 34 is forcibly rotated in the direction of changing 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 arm 70 that guides the lower end side of the second door unit 8 has a sub guide roller 74 that guides the inner end of the sub 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 the lower cam rail 19a of the lower cam rail 19 on the single unit 7 side is fitted, the lower arm 70 is also retracted through the control lever 69 in the same manner as the upper inner parallel link 34. It changes in parallel with the said inner upper parallel link 34 from a protrusion attitude | position.

  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 arm 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 upper parallel link 34 reaches the outlet of the inclined cam groove 18a of the upper cam rail 18 of the first door unit 7, and FIG. As shown, the cam driven roller 72 of the control lever 69 of the lower arm 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. 24B, 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 with the outside of the first door single 7 located at the fixed position P1 on the first lateral movement path 9, leaving the lower arm 70 and the control lever 69. As shown in FIG. At this time, the main guide roller 73 of the lower arm 70 in the protruding posture is relatively moved in the state where 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 arm 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 upper 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, 35 The protruding posture is held by the parallel link posture switching 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 arm 70 work until the inner end of the second door unit 8 reaches a position where it overlaps the inner end of the first door unit 7 at the fixed position P1. The second door unit 8 moves in a straight line on the second lateral movement path 10, and thereafter, the control lever 49 (cam driven roller 50) of the inner upper parallel link 34 and the first door unit 7 Contrary to when the second door unit 8 is opened by the action of the upper cam rail 10 and the control lever 69 (cam driven roller 72) of the lower arm 70 and the lower cam rail 19 of the first unit 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 driven 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 as shown in FIG. 8A, and the movable body 67a A stopper portion 67d provided on the lower side approaches 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, the control lever 49 (cam driven roller 50) of the inner upper parallel link 34, the upper cam rail 18 of the first door unit 7, and the state shown in FIGS. The upper parallel links 34 and 35 and the lower arm 70 pivot on the upper parallel links 34 and 35 by the action of the control lever 69 (cam driven roller 72) of the lower arm 70 and the lower cam rail 19 of the first door unit 7. Parallel swinging motion from the retracted position to the projecting position of the upper side moving body 33 that supports the lower side moving body 16 that pivotally supports the lower arm 70 is accompanied by the movement in the lateral movement direction of the first door 7 alone. Second unit 8 , Is moved parallel to the straight line to the second traverses path 10 to the front, 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 arm 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 arm 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 arm 70 are operated by the parallel link posture switching holding means 41 and the lower arm 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 unit 7 after the inner end of the first door unit 7 reaches a position where it overlaps the inner end of the second door unit 8 located outside the fixed position P2, the inner upper side The control lever 49 (cam driven roller 50) of the parallel link 34 and the upper cam rail 18 of the first door unit 7 and the control lever 69 (cam driven roller 72) of the lower arm 70 and the lower cam rail 19 of the first door unit 7 are arranged. As a result, the upper side moving body 33 that pivotally supports the upper parallel links 34 and 35 and the lower side moving body 16 that pivotally supports the lower arm 70 are laterally moved in the lateral movement direction of the first door unit 7. Accordingly, 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 thin overhanging plate portion 8a at the inner end overlaps.

  In the sliding door device of the present invention which can be used as described above, the lower fixed guide rail 15 and the lower laterally movable body 16 of the door unit lower end side guiding means 14 hardly protrude upward from the floor surface 3. The lower arm 70, the control lever 69, and the pedestal 77 that are above the lower laterally movable body 16 only protrude upward from the floor surface 3. Moreover, as shown in FIG. 2B, the lower arm 70, the control lever 69, and the pedestal portion 77 are located inside the inner ends of the first door unit 7 and the second door unit 8 in the series closed position. When the first door unit 7 is opened, as shown in FIGS. 28A and 28B, the lower arm 70 is moved together with the lower laterally moving body 16 as the lower arm 70 is switched from the retracted position to the protruding position. When the arm 70, the control lever 69, and the pedestal portion 77 are laterally moved in the lateral movement direction of the first door unit 7 and the second door unit 8 is opened, as shown in FIGS. 24B and 24C, the lower arm As 70 changes from the retracted position to the protruding position, the lower arm 70, the control lever 69, and the pedestal portion 77, together with the lower laterally movable body 16, laterally move in the lateral direction of the second door unit 8. As shown in FIGS. 25B and 29B, the first unit alone The lower arm 70, the control lever 69, and the gantry 77 that protrude upward from the floor surface 3, both in the first door unit 7 and the second door unit 8, A portion that protrudes on the floor surface 3 of the lower fixed guide rail 15 embedded in the floor surface 3, on the floor surface 3 of the opened opening, which is hidden inside the overlapping portion, in the embodiment In this case, only a part of the peripheral overhanging portion 15b exists, and it does not obstruct an operator who passes on the floor surface 3 of the opened opening.

  In the above embodiment, the pedestal portion 77 is provided on the upper side of the lower laterally movable body 16, and the lower arm 70 (control lever 69) is pivotally supported on the lower side of the pedestal portion 77, and the lower arm posture switching holding is performed. Although the means 75 is mounted on the gantry 77, the thickness of the lower laterally movable body 16 that moves deeply by fitting the concave groove rail portion 15a of the lower fixed guide rail 15 into the concave groove rail portion 15a. By increasing the height, the lower arm posture switching holding means 75 can be incorporated in the lower laterally movable body 16. In this case, the lower arm 70 (control lever 69) can be pivotally supported on the lower laterally movable body 16 to eliminate the pedestal portion 77, and the fitting portion block 76 is temporarily provided by the pedestal portion 77. Even if it is supported, the pedestal portion 77 can be made thin. Further, the fitting unit block 76 is supported by the lower laterally movable body 16 that laterally moves even though it is a small distance, but from the lower fixed guide rail 15 that does not laterally move to the upper side of the lower laterally movable body 16. An extending support member may be provided continuously, and the fitting portion block 76 may be attached to the support member.

  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 Single door lower end side guide means 15 Lower fixed guide rail 15a Concave groove rail portion 15b Peripheral overhanging portion 16 Lower lateral moving body 17A, 17B Roller unit 18, 19 Cam rail 18a, 19a Inclined cam groove portion 20 First lower side 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 second door unit 8 26 Drive member 26a, 30a, 30b Guide roller 26c Vertical pin 27a, 27b Contact member 29 Movable body 31 Upper side moving body 34, 35 Upper parallel link 36, 37 Horizontal moving unit 36a, 37a Supporting roller 38 Connecting member 39 Parallel link supporting 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 Insertion hole 56, 62 Cutout long hole part 57, 63 Elastic tongue piece for retaining 57a, 63a Check protrusion 58 Locking hole 61 Recess 64 Locking recess 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 body 70 Lower arm 73 Main Guide Ra 74 sub-guide rollers 75 lower arm position switching holding means 76 fitting portion block

Claims (4)

An inner first lateral path, a second lateral path that overlaps the outside of the first lateral path, a first door unit that is laterally movable across the entire area of the first lateral path, and a first lateral path The second door unit is provided with a second door unit that can be translated back and forth between the second side path and the entire side of the second side path. From the fully closed state in the series closed position in series within one lateral movement path, to the first door single body open state in which the first door alone overlaps the inside of the second door single body in the series closed position, and in the series closed position. In the sliding door device configured to be switchable to the open state of the second single door in which the second single door overlaps the outside of the first single door,
The second door unit can be moved back and forth in parallel via a pair of upper parallel links in the door lateral movement direction to the upper lateral movement body that can move laterally across the entire area of the second lateral movement path in parallel with the second lateral movement path. On the floor side, a lower fixed guide rail shorter than the length of the first lateral movement path is formed on the floor surface inside the central region in the length direction of the first lateral movement path. One lower laterally movable body is fitted and supported in a grooved rail portion that is fitted and fixed in the concave groove, and the upper side of the lower fixed guide rail is released, and on the upper side of the lower laterally movable body, A second lower guide rail in which a horizontally swingable lower arm of the same size as the upper parallel link is pivotally supported, and a free end roller of the lower arm is always engaged with the second door alone. Of the pair of upper side parallel links in the lateral direction of the door, A control lever having a cam driven roller pivotally supported at its free end is connected to the link and the lower arm in a reverse diagonally forward direction with respect to the upper inner parallel link and the lower arm. Includes a pair of upper and lower cam rails to which the cam driven rollers of the upper and lower control levers engage when the first second door unit is in the series closed position, and a lower cam rail in the pair of upper and lower cam rails. A first lower guide rail that engages with the cam driven roller of the lower control lever that is disengaged from the first control unit. The upper inner parallel link and the lower arm are interlocked and swung from the retracted position to the forward protruding position to move the second door unit from the first lateral movement path to the second lateral movement. After translating into the path Having a length deviating from the cam follower roller of the upper and lower control levers, pull difference door device.   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, wherein a fitting portion that regulates a position in a front-rear direction on a lower end side of the single unit is provided.   On the upper side of the lower laterally movable body, a pedestal portion is installed across a horizontal swing space of the lower arm and the lower control lever, and the fitting portion is a block attached on the pedestal portion; The sliding door device according to claim 2, comprising a guide rail having a groove-shaped cross section attached to the first door alone along the lateral direction of the door.   4. The sliding door device according to claim 3, wherein the gantry is provided with lower arm posture switching holding means for selectively biasing and holding the lower arm between a retracted posture and a protruding posture. .

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