JP5014754B2 - Sliding door link device - Google Patents

Description

  The present invention relates to a sliding door link device in which a front opening in a housing such as a cabinet can be opened and closed by three sliding doors that are operated in synchronization with each other.

  Conventionally, in cabinets used in office spaces, such as offices, the front opening is placed in front of and behind the left door, middle door, and right door that operate in synchronization with each other by a link device having a pair of left and right link bars. The three sliding doors can be opened and closed, and one end of the left and right link bars can be used as the left and right doors, and the other end can be moved up and down on a guide rail provided on the intermediate door along the vertical direction. It is known that the operability at the time of door opening / closing operation is improved by connecting to a slider or the like coaxially, and the generation of abnormal noise can be prevented (see Patent Documents 1 to 3).

However, in the ones described in Patent Documents 1 to 3, since the ends of the left and right link bars and rollers are connected by special processing such as caulking, it takes time to assemble each component member. However, not only is it troublesome, but if the operation of the constituent members becomes uncomfortable due to damage, production errors, etc., there has been a problem that all of the devices must be replaced, which is expensive.
Japanese Patent No. 3382877 JP 2005-188066 A Japanese Patent Laid-Open No. 2003-155872

  In view of the above-mentioned problems of the prior art, the present invention does not require special processing such as caulking, can easily replace each constituent member and perform assembly work, and It is an object of the present invention to provide a sliding door link device that can smoothly synchronize the doors.

According to the present invention, the above problem is solved as follows.
(1) The front opening of the housing can be opened and closed by three sliding doors, a left door, an intermediate door, and a right door, which are arranged so as to be movable in the left-right direction by overlapping the front and rear sequentially. One end of a pair of left and right link bars can be pivotally connected to the back surfaces of the left and right doors, and the other end can be moved up and down on a guide rail formed along the vertical direction on the back surface of the intermediate door. The sliding door link device is connected to the interlocking metal fittings provided to be guided by each other so as to rotate freely, and the doors are operated synchronously during the door opening / closing operation. A flat substrate formed parallel to the intermediate door, a back plate spaced apart from the back of the substrate, and a connecting portion connecting the substrate and the back plate are formed in a U-shape in plan view. One end is connected to either the left door or the right door on the rear surface The other end of Nkuba well as pivotally connected to, the rear surface of the back plate, the link bar the other end of the other link end on the door are connecting bar rotatably connected, and ligated to the rear surface of the substrate The other end of the link bar and the other end of the link bar connected to the rear surface of the back plate are disposed so as to be displaced from each other in the front-rear direction and the vertical direction.

(2) In the above item (1), a pair of rollers, which are spaced apart from each other in the vertical direction, are rotatably provided on the front surface of the substrate, and through these rollers, the interlocking bracket is guided to the guide rail so as to be movable up and down. .

(3) In the above item (2), the other ends of the left and right link bars are positioned and connected between the upper and lower rollers of the interlocking bracket.

(4) In any of the above items (1) to (3), the other ends of the left and right link bars are spaced apart from each other and connected.

(5) In any one of the above items (1) to (4), a circular hole and a guide hole in which the inner peripheral edge of the circular hole is cut outward in the diameter direction are formed in the substrate and the back plate. And a rotation shaft portion at the other end of each of the left and right link bars. The rotation shaft portion is provided with a circular protrusion that can be aligned with the circular hole of the insertion hole, and an outer portion of the circular protrusion. After the peripheral edge protrudes outward in the diametrical direction and is formed with a locking piece that can be aligned with the guide hole of the insertion hole, and after the rotation shaft portion is inserted into the insertion hole in alignment with each other The other end of the link bar is connected so that the locking piece and the guide hole are in the misalignment position.

(6) In the above item (5), the alignment position between the guide hole of the insertion hole and the locking piece of the rotation shaft portion is set outside the rotation range of the link bar during the door opening / closing operation.

(7) In any one of the above items (1) to (6), a stopper piece provided on the interlocking bracket and projecting toward the left door side located in front of the intermediate door; A dead bolt interlocked with the locking operation, an operating rod having one end linked to the dead bolt, and a hook-shaped portion provided at the other end of the operating rod and preventing the stopper piece from moving upward when the door is closed. The link lock mechanism is configured, and the door is locked through the link lock mechanism.

(8) In any one of the above items (1) to (7), a pair of left and right link bars are provided at a plurality of positions spaced apart in the vertical direction on the door.

(9) In the above item (8), in the plurality of pairs of link bars provided at a plurality of positions spaced apart in the vertical direction on the door, the other ends of the left and right link bars connected to the interlocking bracket are elongated in the vertical direction. Connect to one common interlocking bracket.

According to the present invention, the following effects can be obtained.
According to the invention of claim 1, the interlocking metal fitting is formed of a substrate on a flat plate arranged in parallel with the intermediate door and a back plate arranged apart from the back of the substrate, and on the rear surface of the substrate, The other end of the link bar, one end of which is connected to either the left door or the right door, is rotatably connected, and the other end of the link bar, which is connected to the other door, is connected to the back plate. Since it is pivotably connected, it is not necessary to perform special processing such as caulking, and each component can be easily replaced and assembled, and the doors can be smoothly and synchronously operated. .

  According to the second aspect of the present invention, a pair of rollers, which are spaced apart from each other in the vertical direction, are rotatably provided on the front surface of the substrate, and the interlocking brackets are guided to the guide rails through the rollers so as to be movable up and down. Therefore, the ascending / descending of the interlocking bracket can be stably guided.

  According to the invention of claim 3, since the other ends of the left and right link bars in the interlocking metal fitting are positioned between the upper and lower rollers, the door operating force transmitted from the link bar is smoothly transmitted to the intermediate door. can do.

  According to the invention described in claim 4, since the other ends of the left and right link bars in the interlocking metal fitting are positioned apart from each other in the vertical direction, it is possible to improve workability during replacement of each constituent member and assembly. it can.

  According to the fifth aspect of the present invention, the through hole comprising the circular hole and the guide hole in which the inner peripheral edge of the circular hole is cut outward in the diameter direction is provided in the substrate and the back plate of the interlocking metal fitting. In addition, the rotation shaft portion provided at the other end of the left and right link bars is formed with a circular hole of the insertion hole, a circular protrusion that can be aligned with the guide hole, and a locking piece, and the rotation shaft portion is inserted into the insertion hole. Since the other end of the link bar is connected so that the locking piece and the guide hole are in the misalignment position after being inserted into the inside, it is easy to replace each component and to perform assembly work. In addition, special processing such as caulking can be eliminated.

  According to the sixth aspect of the present invention, the alignment position of the guide hole of the insertion hole in the interlocking fitting and the locking piece of the rotation shaft portion at the other end of the link bar is the rotation range of the link bar during the door opening / closing operation. Since it is set to the outside, the connection between the interlocking fitting and the other end of the link bar is not unintentionally disconnected and can be reliably connected.

  According to the seventh aspect of the present invention, the stopper piece that protrudes toward the side of the left door located in front of the intermediate door on the interlocking metal fitting is connected to the door by the hook-shaped portion interlocking with the locking operation of the key device. The link lock mechanism is configured to prevent upward movement when closed, and the door is locked via this link lock mechanism, so the link bar can be connected without using a separate locking device. It can be locked, and the manufacturing cost can be reduced.

  According to the eighth aspect of the present invention, since the pair of left and right link bars are provided at a plurality of positions spaced apart in the vertical direction on the door, the door opening / closing operation even when the door is elongated in the vertical direction Can be performed smoothly.

  According to the ninth aspect of the present invention, in a plurality of pairs of link bars provided at a plurality of positions spaced apart in the vertical direction on the door, one end of each of the left and right link bars connected to the interlocking bracket is elongated in the vertical direction. Since it is connected to two common interlocking brackets, the operations of the left and right link bars positioned up and down can be reliably synchronized, and the door can be opened and closed more smoothly.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view of a fully closed state of a cabinet provided with a sliding door link device according to a first embodiment of the present invention as viewed from the back side, and FIG. 2 is a cross-sectional plan view taken along line II-II in FIG. 3 is an overall front view of the fully opened state of the door viewed from the back side, FIG. 4 is a cross-sectional plan view taken along line IV-IV in FIG. 3, and FIG. 5 is an overall perspective view of the fully closed state of the door viewed from the back side. 6 is a partially enlarged exploded perspective view showing a connection state between the interlocking metal fitting and the first and second link bars, FIG. 7 is an enlarged plan view of a portion VII in FIG. 2, and FIG. 8 is a first link bar and link. FIG. 9 is an enlarged plan view of a portion IX in FIG. 2, and FIG. 10 is a partially enlarged exploded perspective view showing a connection state between the second link bar and the link bracket. FIG. 11 is an enlarged plan view of the XI portion in FIG. 2, and FIG. FIG. 13 is an enlarged perspective view of the clock mechanism portion, and FIG. 13 is a vertical side view taken along line XIII-XIII of FIG.
In the following description, the left and right refer to the case where the casing is viewed from the rear, and the upper side in FIG. 2 is “front” and the lower side is “rear”. In the present embodiment, a cabinet used in an office or the like is taken as an example of the casing.

  As shown in FIGS. 1 to 5, the front opening 2 in the cabinet 1 is closed by a sliding door 3 so that it can be opened and closed. As shown in FIGS. 1 and 2, the sliding door 3 includes three doors, a left door 4, an intermediate door 6, and a right door 5. In addition, it is configured by being arranged so as to be movable in the left-right direction while sequentially superimposing front and rear from the front to the rear.

  The sliding door 3 is at least a left door 4 or a right door by a link device 7 provided on the lower surface of the sliding door 3 from the door fully closed state shown in FIGS. 1 and 2 to the door fully opened state shown in FIGS. The doors 4, 5, 6 can be synchronized with each other via the intermediate door 6 by opening / closing one of the doors 5 with the handle 4 a or 5 a.

  The link device 7 includes a pair of left and right first and second link bars 8 and 9 and an interlocking fitting 10. One end 8 a of the first link bar 8 is on the back surface of the left door 4 positioned in front of the intermediate door 6, and one end 9 a of the second link bar 9 is on the back surface of the right door 5 positioned behind the intermediate door 6, Each is pivotably connected. The other ends 8 b and 9 b of the first and second link bars 8 and 9 are rotatably connected to the interlocking fitting 10.

  As shown in FIGS. 6 and 7, the interlocking bracket 10 includes a vertical substrate 12 extending in the vertical direction of a door in which a pair of rollers 11, 11 that are spaced apart from each other are provided on the front surface. A back plate 13 that is spaced apart and rearward of the upper portion of the substrate 12 and is integrally disposed in parallel; a guide piece 14 that is provided continuously from the side end of the substrate 12 on the left door 4 side; The stopper piece 15 is formed continuously from the lower portion of the front end portion 14a of the guide piece 14 toward the left side on the left door 4 side. A slider 16 is provided on the intermediate inner surface in the vertical direction of the guide piece 14.

  The interlocking bracket 10 engages the upper and lower rollers 11, 11 with a guide rail 17 formed along the vertical direction on the rear surface of the left door 4 side of the intermediate door 6, and the inner surface of the guide piece 14 is By being arranged so as to be slidable or close to the outer edge of the intermediate door 6 extending in the vertical direction via the slider 16, it is guided so as to be lifted and lowered.

  A mounting base 12a is cut and raised at the rear lower portion of the substrate 12, and the other end 8b of the first link bar 8 is formed on the rear surface of the mounting base 12a. Are connected to the other end 9b of the second link bar 9 through first and second insertion holes 18 and 18 'having the same shape.

  In the first and second insertion holes 18 and 18 ′, the same first and second rotating shaft portions 19 and 19 ′ provided on the front surfaces of the other ends 8b and 9b of the link bars 8 and 9, respectively, are fitted. The other ends 8b and 9b of the link bars 8 and 9 can be separated from each other in the vertical and forward and backward directions between the upper and lower rollers 11 and 11, respectively.

  The first and second insertion holes 18, 18 'are circular holes 18a, 18a' and guide holes 18b, 18b, 18b cut in such a manner that the inner peripheral edges of the circular holes 18a, 18a 'are directed outward in the diameter direction. ', 18b'. The first and second rotating shaft portions 19 and 19 ′ are circular projections 19a and 19a ′ that are aligned so as to protrude from the circular holes 18a and 18a ′, leaving the thickness of the substrate 12 or the back plate 13. , Locking pieces 19b, 19b, 19b ′, which allow the outer peripheral edges of the circular protrusions 19a, 19a ′ to protrude outward in the diametrical direction and align with the guide holes 18b, 18b, 18b ′, 18b ′. 19 '.

  The other ends 8b and 9b of the link bars 8 and 9 and the interlocking bracket 10 are respectively connected to the first and second rotating shaft portions 19 and 19 'at the other ends 8b and 9b of the link bars 8 and 9. The first and second insertion holes 18 and 18 'are inserted in alignment with each other, and then the locking pieces 19b, 19b, 19b' and 19 'and the guide holes 18b, 18b, 18b' and 18b ' As shown by an imaginary line in FIG. 6, in other words, the locking pieces 19b, 19b, 19b ′ are set so as to be set outside the rotation range of the link bars 8, 9 during the door opening / closing operation. , 19b ′ and the guide holes 18b, 18b, 18b ′, 18b ′ are connected by being assembled so as to always be in an inconsistent position within the rotation range of each link bar 8, 9.

  Thereby, within the rotation range of each link bar 8 and 9 at the time of door opening / closing operation, rotation shaft part 19 and 19 'does not detach | leave from insertion hole 18 and 18', but each link bar 8 and 9 '. Can be reliably coupled to the interlocking bracket 10 and the operation of removing the link bars 8 and 9 from the interlocking bracket 10 at the time of component replacement can be easily performed independently of each other.

  As shown in FIGS. 8 to 10, the first and second link bars 8 and 9 are provided with the same third and fourth rotating shaft portions 20 and 20 ′ on the front surfaces at the respective ends 8 a and 9 a, respectively. It has been. The third and fourth rotating shaft portions 20, 20 ′ are three-stage shafts of a large diameter shaft 20a, 20a ′, a medium diameter shaft 20b, 20b ′ and a small diameter shaft 20c, 20c ′ in order from the front to the rear. Have a diameter.

  The third and fourth rotation shaft portions 20 and 20 ′ of the first and second link bars 8 and 9 are respectively connected to the first and second link brackets 21 attached to the back surfaces of the left door 4 and the right door 5. 22 are inserted into the same third and fourth insertion holes 23 and 23 ′ provided in the same shape, and are rotatably connected to each other.

  The third and fourth insertion holes 23, 23 'are smaller than the upper large-diameter shaft holes 23a, 23a' into which the large-diameter shafts 20a, 20a 'of the third and fourth rotating shaft portions 20, 20' can be inserted. An intermediate shaft hole 23b, 23b 'into which the shafts 20c, 20c' can be inserted and a lower small diameter shaft hole 23c, 23c 'into which the medium diameter shafts 20b, 20b' can be inserted are connected in the vertical direction. Have.

In order to assemble one end 8a of the first link bar 8 to the first link bracket 21, the first link bar 8 is inserted into the third insertion hole 23 of the first link bracket 21, as shown in FIGS. When the third rotating shaft portion 20 is mounted, the large diameter shaft 20a is inserted into the upper large diameter shaft holes 23a and 23a, and the small diameter shaft 20c is inserted to a position reaching the intermediate shaft hole 23b. Next, the small diameter shaft 20c is lowered through the intermediate shaft hole 23b and dropped into the lower small diameter shaft hole 23c, the middle diameter shaft 20b is aligned with the lower small diameter shaft hole 23c, and the front surface of the first link bar 8 at one end 8a. And the spacer member 24 is inserted into a gap formed between the first link bracket 21 and the rear surface of the first link bracket 21 so as to be engaged with the small-diameter shaft 20c.

  To assemble one end 9a of the second link bar 9 to the second link bracket 22, as in the case of the first link bar 8, the fourth insertion hole of the second link bracket 22 as shown in FIGS. When the fourth rotating shaft portion 20 of the second link bar 9 is attached to 23 ′, the large diameter shaft 20a ′ is inserted into the upper large diameter hole 23a ′, and the small diameter shaft 20c ′ is inserted into the intermediate shaft hole 23b ′. Insert it all the way. Next, the small diameter shaft 20c ′ is lowered through the intermediate shaft hole 23b ′ to drop into the lower small diameter hole 23c, the medium diameter shaft 20b ′ is aligned with the lower small diameter hole 23c ′, and one end 9a of the second link bar 9 is placed. The spacer member 25 is inserted into a gap formed between the front surface of the second link receiving bracket 22 and the rear surface of the second link bracket 22 so as to be engaged with the small-diameter shaft 20c ′.

  In the cabinet 1, as shown in FIGS. 1, 3, 5, and 12, a key device 26 is installed on the front surface of the left door 4 in the sliding door 3. The key device 26 has a dead bolt 27 on the back surface of the left door 4 that is interlocked with a locking operation by locking / unlocking a key (not shown). The dead bolt 27 is engaged with an engagement rod 29a at one end of an operating rod 29 pivotally supported around a horizontal axis with a bracket 28 on the back surface of the left door 4.

  As shown by a solid arrow in FIG. 12, the operating rod 29 can be converted into a rotating operation around the horizontal axis by the vertical movement of the dead bolt 27 by the locking operation of the key device 26. The free end portion 29b of the operating rod 29 is provided with a rod-shaped portion 30 extending in the shape of a rod toward the rear. The hook-shaped portion 30 is disposed so as to be positioned in the vicinity of the upper portion of the stopper piece 15 in the interlocking bracket 10 provided on the intermediate door 6 so as to be movable up and down, and the operating rod 29 is rotated in conjunction with the locking operation of the key device 26. Thus, a link lock mechanism as a locking device is configured so that the stopper piece 15 can be moved in and out of the movable range and the upward movement of the stopper piece 15 in the fully closed state of the sliding door 3 is prevented.

As shown in FIG. 13, the link lock mechanism is configured so that the distal end portion 31 of the hook-shaped portion 30 provided on the free end portion 29 b of the operating rod 29 is locked in the interlocking bracket 10 by the locking operation of the key device 26 when the door is fully closed. By tilting and rotating from above to back and forth toward the upper end of the stopper piece 15, it is possible to engage the back surface of the stopper piece 15 so as to be hookable and prevent the ascending operation of the interlocking bracket 10. is there.
Therefore, the interval between the left door 4 and the intermediate door 6 does not increase due to the locking operation of the key device 26 when the door is fully closed.

  FIG. 14: is the whole front view which looked at the door fully closed state of the cabinet provided with the link device of the sliding door in 2nd Embodiment of this invention from the back surface.

  As shown in FIG. 14, in the sliding door 34 that opens and closes the opening 33 of the cabinet 32, link devices 38 that link the three doors of the left door 35, the intermediate door 36, and the right door 37 so as to freely open and close are respectively provided. A pair is provided spaced apart in the vertical direction. The upper and lower link devices 38, 38 are provided with a pair of left and right first and second link bars 39, 40, respectively, as in the first embodiment.

  One end 39a of the first link bar 39 is pivotally connected to the back surface of the left door 35 located in front of the intermediate door 36 with a first link bracket 41, and one end 40a of the second link bar 40 is The second link bracket 42 is rotatably connected to the back surface of the right door 37 located behind the intermediate door 36. The other ends 39b, 40b of the first and second link bars 39, 40 are rotatably connected to one common interlocking fitting 43 that is long in the vertical direction across the upper and lower link devices 38, 38, respectively. ing.

  Three upper rollers 44, an intermediate roller 45, and a lower roller 46 that are spaced apart from each other are rotatably mounted on the front surface of the interlocking bracket 43. The upper and lower link devices 38, 38 are disposed between the intermediate roller 45 and the lower roller 46, respectively.

  The rollers 44, 45, 46 are engaged with engagement grooves 47 a of guide rails 47 formed along the vertical direction on the rear surface of the end of the intermediate door 36 on the left door 35 side. Following the opening and closing operations of the doors 35, 36 and 37, the doors 35, 36 and 37 are guided so as to be lifted and lowered.

It is the whole front view which looked at the door fully closed state of the cabinet provided with the link device of the sliding door in a 1st embodiment of the present invention from the back. FIG. 2 is a cross-sectional plan view taken along line II-II in FIG. 1. It is the whole front view which looked at the door full open state from the back. It is the IV-IV line crossing top view in FIG. It is the whole perspective view which looked at the door fully closed state from the back. It is a partial expansion disassembled perspective view which shows the connection state of an interlocking metal fitting and a 1st and 2nd link bar. It is an enlarged plan view of the VII part in FIG. It is a partial expansion disassembled perspective view which shows the connection state of a 1st link bar and a link bracket. FIG. 3 is an enlarged plan view of a portion IX in FIG. 2. It is a partial expansion disassembled perspective view which shows the connection state of a 2nd link bar and a link bracket. FIG. 3 is an enlarged plan view of a XI portion in FIG. 2. It is an expansion perspective view of a link lock mechanism part. It is the XIII-XIII line vertical side view of FIG. It is the whole front view which looked at the door fully closed state of the cabinet provided with the link device of the sliding door in 2nd Embodiment of the present invention from the back.

Explanation of symbols

1 Cabinet (housing)
2 opening 3 sliding door 4 left door 4a handle 5 right door 5a handle 6 intermediate door 7 link device 8 first link bar 8a one end 8b other end 9 second link bar 9a one end 9b other end 10 interlocking bracket 11 roller 12 substrate 12a Mounting base 13 Back plate 14 Guide piece 14a Front end 15 Stopper piece 16 Slider 17 Guide rail 18 First insertion hole 18a Circular hole 18b Guide hole 18 'Second insertion hole 18a' Circular hole 18b 'Guide hole 19 First rotation Shaft portion 19a Circular protrusion 19b Locking piece 19 'Second rotation shaft portion 19a' Circular protrusion 19b 'Locking piece 20 Third rotation shaft portion 20a Large diameter shaft 20b Medium diameter shaft 20c Small diameter shaft 20' Fourth rotation Shaft portion 20a 'Large diameter shaft 20b' Medium diameter shaft 20c 'Small diameter shaft 21 First link receiving bracket 22 Second link receiving bracket 23 Third insertion hole 23a Upper large diameter shaft hole 23b Intermediate shaft hole 23c Small diameter shaft hole 23' First 4 insertion 23a 'Upper large-diameter shaft hole 23b' Intermediate shaft hole 23c 'Small-diameter shaft hole 24 Spacer member 25 Spacer member 26 Key device 27 Dead bolt 28 Bracket 29 Actuation rod 29a Engagement rod 29b Free end portion 30 Flange portion 31 Tip portion 32 Cabinet
33 opening 34 sliding door 35 left door 36 intermediate door 37 right door 38 link device 39 first link bar 39a one end 39b other end 40 second link bar 40a one end 40b other end 41 first link bracket 42 second link receiver Metal fitting 43 Interlocking metal fitting 44 Upper roller 45 Intermediate roller 46 Lower roller 47 Guide rail 47a Engagement groove

Claims (9)

The front opening in the housing can be opened and closed by three sliding doors, a left door, an intermediate door, and a right door, which are arranged to be movable in the left-right direction by sequentially overlapping the front and rear. One end of a pair of left and right link bars is pivotally connected to the back surface of the door, and the other end of the link bar is guided by a guide rail formed along the vertical direction on the back surface of the intermediate door. A link device for a sliding door that is connected to the interlocking fittings provided so as to rotate freely, and the doors are operated in synchronization with each other when the door is opened and closed.
The interlocking bracket is formed into a U-shape in a plan view by a flat board arranged in parallel with the intermediate door, a back plate spaced apart behind the board, and a connecting portion connecting the board and the back plate. The other end of the link bar, one end of which is connected to either the left door or the right door, is rotatably connected to the rear surface of the substrate, and the other end of the link plate is connected to the rear surface of the back plate. The other end of the link bar connected to the rear surface of the substrate and the other end of the link bar connected to the rear surface of the back plate are connected to each other in the front-rear and vertical directions. A sliding door link device characterized in that it is disposed at a different position .   2. A pair of rollers, which are spaced apart from each other in the vertical direction, are rotatably provided on the front surface of the substrate, and the interlocking metal fittings are guided to the guide rail so as to be movable up and down through these rollers. The sliding door link device.   3. The sliding door link device according to claim 2, wherein the other ends of the left and right link bars are connected by being positioned between the upper and lower rollers of the interlocking metal fitting.   4. The sliding door link device according to any one of claims 1 to 3, wherein the other ends of the left and right link bars are spaced apart from each other and connected.   The board and the back plate are each provided with an insertion hole consisting of a circular hole and a guide hole in which the inner peripheral edge of the circular hole is cut outward in the diametrical direction, and is rotated to the other end of the left and right link bars. The insertion hole, which is provided with a shaft part, and the rotation shaft part is formed so that the circular protrusion that can be aligned with the circular hole of the insertion hole, and the outer peripheral edge of the circular protrusion protrudes outward in the diameter direction. The locking piece can be aligned with the guide hole, and the rotation shaft portion is inserted into the insertion hole while being aligned with each other. 5. The sliding door link device according to claim 1, wherein the other end of the link bar is connected.   6. The sliding door link according to claim 5, wherein the alignment position between the guide hole of the insertion hole and the locking piece of the rotation shaft portion is set outside the rotation range of the link bar during the door opening / closing operation. apparatus.   A stopper piece provided on the interlocking bracket and projecting toward the side of the left door located in front of the intermediate door, a dead bolt interlocking with the locking operation of the key device, and one end interlocking with this dead bolt A link lock mechanism is configured by an operating rod and a hook-shaped portion provided at the other end of the operating rod and preventing upward movement of the stopper piece when the door is closed. The sliding door link device according to claim 1, wherein the door is locked.   8. The sliding door link device according to claim 1, wherein a pair of left and right link bars are provided at a plurality of positions spaced apart in the vertical direction of the door.   In a plurality of pairs of link bars provided at a plurality of positions spaced apart in the vertical direction on the door, the other ends of the left and right link bars connected to the interlocking bracket are connected to one common interlocking bracket that is long in the vertical direction. The sliding door link device according to claim 8.

Images