JP2008050891A - Interlocking device for horizontally sliding doors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interlocking device for horizontally sliding doors, which can reduce working man-hours and production costs, prevents an unusual sound when an external force in a forward/backward direction is applied to the doors, and can be neatly arranged when the doors are closed. <P>SOLUTION: An engaging piece 45 formed like the ell in plan and having a front end facing laterally inward, is formed on a side end of an abutting portion 32 of a front door 4, so as to extend backward. Then an interlocking member 34 made of a synthetic resin, consists of a base portion 35 and an engaging portion 36. The base portion 35 is detachably mounted on a front surface of a side end of an abutting portion 33 of a rear door 6. The engaging portion 36 is protruded forward from the base portion 35, a front end 36a thereof has an abutting portion 37 capable of abutting on a rear surface of the front door 4, and a laterally internal surface 36b thereof has a vertically extending recessed groove 38 formed therein. When the doors are closed, the engaging piece 45 of the front door 4 is engaged with the recessed groove 38. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

  Conventionally, in cabinets used in office spaces such as offices, the front opening can be opened and closed by three sliding doors arranged before and after both the left and right doors and the intermediate door, and at the time of closing operation, The doors located in the front and back are linked to each other by the linking member to improve operability and maintain the positional relationship between the front and rear doors even when an external force is applied to the door in the front-rear direction. There is known one that can be used (see Patent Documents 1 and 2).

However, in the thing of patent document 1, 2, since a connection member is attached to the door made from a sheet metal by welding etc., a process man-hour increases and manufacturing cost also becomes high.
Further, when an external force in the front-rear direction is applied to the door, there is a possibility that one door located in the front-rear direction and the linking member of the other door come into contact with each other, so that a metal sound is likely to be generated.
Furthermore, when the doors are linked together, there is a slight gap between the front and rear doors, so even within the permissible range of this gap, variations occur in the front and rear positions of the door, and the door looks good when closed. There was a problem that it could not fit.
Japanese Patent Laid-Open No. 08-193468 Japanese Patent No. 2748087

  In view of the above-mentioned problems of the conventional technology, the present invention can reduce processing man-hours and manufacturing costs, and prevent abnormal noise when an external force in the front-rear direction acts on the door. An object of the present invention is to provide a sliding door linkage device that can be housed in a good appearance when the door is closed.

According to the present invention, the above problem is solved as follows.
(1) The front opening in the housing can be opened and closed by a plurality of doors that are arranged so as to be movable in the left-right direction, and the doors positioned at the front and back can be opened and closed during the door opening / closing operation. In a sliding door linkage device that is linked to each other by a linkage member, an engagement piece that is L-shaped in plan view with the tip portion facing inward in the left-right direction at the side end portion on the summing portion side of the front door The base is detachably attached to the front of the side end of the rear door with the synthetic resin material, and the base is projected forward from the base. The front end portion has a contact portion that can come into contact with the back surface of the front door, and is formed by an engagement portion having a recessed groove portion in the vertical direction on the inner side surface in the left-right direction. Engagement piece in front door in recessed groove So as to engage.

(2) In the above item (1), the groove width of the recessed groove portion is narrowed from the opening toward the inner bottom surface.

(3) In the above item (2), the recessed groove portion is formed such that the front surface of the inner wall is an inclined surface inclined backward from the opening portion toward the inner bottom surface, and the rear surface of the inner wall is directed from the opening portion to the inner bottom surface. The slope is inclined forward.

(4) In any one of the above items (1) to (3), the sliding door is composed of three doors, a left door, an intermediate door, and a right door. While connecting one end of each link bar to each other in a freely rotatable manner, the other end of the link bar is provided on the back of the intermediate door on the back of the intermediate door so that it can be guided up and down by a guide rail formed along the vertical direction. Each of the doors has a link mechanism that is pivotably connected and that allows the doors to be operated synchronously during the door opening / closing operation, and the interlocking bracket is mounted on the back of the board and spaced apart from the back of the board. The other end of the link bar whose one end is connected to either the left door or the right door is pivotally connected to the rear surface of the substrate, and the other surface is connected to the rear surface of the rear plate. The other end of the link bar having one end connected to the door is rotatably connected.

(5) In the above paragraph (4), a dead bolt provided on the interlocking bracket and projecting toward the side of the left door located in front of the intermediate door and interlocking with the locking operation of the key device A link lock mechanism comprising an operating rod whose one end is 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 door is locked through the link lock mechanism.

According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the L-shaped engagement piece in a plan view with the tip portion facing inward in the left-right direction is continuously provided at the side end portion of the front door on the side of the linkage portion. The base member is detachably attached to the front surface of the side end on the summing portion side of the rear door with a synthetic resin material, and the front end protrudes forward from the base portion. And an engaging portion having a vertical recessed groove portion on the inner side surface in the left-right direction, and in the closed state, the recessed groove portion is formed on the front door. Since the engagement pieces are engaged, the processing man-hours and manufacturing costs can be reduced, and when an external force in the front-rear direction acts on the door, the generation of abnormal noise can be prevented. And when closing the door, fit the door in a good appearance It can be.

  According to the invention of claim 2, since the groove width of the recessed groove portion is narrowed from the opening portion toward the inner bottom surface, positioning between the front and rear of the doors can be facilitated, and at the time of closing the door , The door can fit nicely.

  According to the third aspect of the present invention, the recessed groove portion has the inner wall front surface inclined to the rear from the opening toward the inner bottom surface, and the inner wall rear surface forward from the opening toward the inner bottom surface. Even if the positional relationship between the front and rear doors is shifted forward and backward, the front door is locked by the inclination of both front and rear surfaces of the inner wall in the recessed groove. The pieces act together with the door located at the rear in the direction of pulling back and forth to facilitate the positioning of the doors in the front-rear direction, and the doors can be housed well when closed.

  According to the invention described in claim 4, the sliding door is constituted by three doors of a left door, an intermediate door, and a right door, and one end of a pair of left and right link bars is rotated on the back surfaces of the left and right doors, respectively. While freely connecting, the other end of each of them is connected to an interlocking fitting provided so as to be able to be raised and lowered by a guide rail formed along the vertical direction on the back surface of the intermediate door, respectively, In addition, the door has a link mechanism that allows the doors to be operated synchronously at the time of opening and closing the door, and the interlocking bracket is formed of a substrate and a back plate that is spaced apart behind 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 pivotally connected to the rear surface, and the other end of the link is connected to the rear surface of the rear plate. Because the other end of the bar is pivotably connected, special processing such as caulking Be required without replacement and of the components, with the assembly work can be easily performed, it is possible to smoothly synchronize the operation of the door together.

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

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a cabinet provided with a sliding door link device of the present invention in a fully closed state as viewed from the back side, FIG. 2 is a cross-sectional plan view taken along line II-II in FIG. 1, and FIG. FIG. 4 is a cross-sectional plan view taken along the line IV-IV in FIG. 3, FIG. 5 is an overall perspective view of the fully closed state of the door viewed from the back, and FIG. FIG. 7 is an enlarged plan view of a part VII in FIG. 2, and FIG. 8 shows a connection state between the first link bar and the link bracket. 9 is a partially enlarged exploded perspective view, FIG. 9 is an enlarged plan view of the IX portion in FIG. 2, FIG. 10 is a partially enlarged exploded perspective view showing a connection state between the second link bar and the link bracket, and FIG. 2 is an enlarged plan view of the XI portion, FIG. 12 is an enlarged perspective view of the link lock mechanism portion, and FIG. 13 is an XIII-XIII line of FIG. Cross-sectional side view, Figure 14, cross-sectional plan view of the link apparatus in the line XIV-XIV of FIG. 1, FIG. 15 is an enlarged front view of the link apparatus, FIG. 16 is a perspective view of a linkage member.

  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. 1-5, the opening part (2) of the front surface in a cabinet (1) is obstruct | occluded by the sliding door (3) so that opening and closing is possible. As shown in FIGS. 1 and 2, the sliding door (3) is composed of three doors, a left door (4), an intermediate door (6), and a right door (5). In the left and right grooves or rails, they are arranged so as to be movable in the left and right directions while overlapping one after another sequentially from the front to the rear.

  The sliding door (3) is at least a left door (4) from the door fully closed state shown in FIGS. 1 and 2 to the door fully open state shown in FIGS. 3 and 4 by a link device (7) provided on the back surface thereof. ) Or the right door (5) is opened and closed with the handle (4a) or (5a), and the doors (4), (5), (6) are connected to each other via the intermediate door (6). Synchronous operation is possible.

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

  As shown in FIG. 6 and FIG. 7, the interlocking bracket (10) is a vertical substrate (12) provided with a pair of rollers (11) and (11) that are spaced apart from each other on the front surface. And a rear plate (13) which is spaced apart and rearwardly on the upper side of the substrate (12), and the side edge of the substrate (12) on the left door (4) side. The guide piece (14) provided continuously and the stopper piece (15) provided continuously from the lower part of the front end (14a) of the guide piece (14) toward the left side on the left door (4) side. Yes. A slider (16) is provided on an intermediate inner surface in the vertical direction of the guide piece (14).

  The interlocking bracket (10) engages the upper and lower rollers (11) and (11) with a guide rail (17) formed along the vertical direction on the back surface of the end of the intermediate door (6) on the left door (4) side. In addition, the inner surface of the guide piece (14) is 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). Guided as possible.

  A mounting base (12a) is formed by cutting back and rearwardly at the lower rear surface 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). ) And the other end (9b) of the second link bar (9) on the rear surface of the back plate (13) via the first and second insertion holes (18) and (18 ') having the same shape, respectively. It is connected.

  The first and second insertion holes (18) and (18 ') have the same first and second rotations provided in front of the other ends (8b) and (9b) of the link bars (8) and (9), respectively. The shaft portions (19) and (19 ') are inserted and connected to each other so as to be rotatable. The other ends (8b) and (9b) of the link bars (8) and (9) are connected to the upper and lower rollers (11) ( 11) can be separated vertically and forward and backward.

  The first and second insertion holes (18) and (18 ') are cut so that the circular holes (18a) and (18a') and the inner peripheral edges of the circular holes (18a and 18a ') are directed outward in the diameter direction. The guide holes (18b), (18b), (18b ′) and (18b ′) are formed. The first and second rotating shaft portions (19) and (19 ′) may protrude from the circular holes (18a) and (18a ′) while leaving the thickness of the substrate (12) or the back plate (13). The circular protrusions (19a) (19a ′) aligned with the outer periphery of the circular protrusions (19a) (19a ′) protrude outward in the diametrical direction, and the guide holes (18b) (18b) ( 18b ′) and (18b ′) are formed of locking pieces (19b), (19b), (19b ′), and (19b ′).

  The other end (8b) (9b) of each link bar (8) (9) and the interlocking fitting (10) are the first and the second at the other end (8b) (9b) of each link bar (8) (9). After the two pivot shafts (19) and (19 ') are inserted into the first and second insertion holes (18) and (18') of the interlocking metal fitting (10) in alignment with each other, the locking piece (19b) (19b) (19b ') (19b') and the alignment position of the guide holes (18b) (18b) (18b ') (18b') are shown in FIG. In other words, the locking bars (19b) (19b) (19b ') (19b') and the guide holes (18b) ( 18b) (18b ') (18b') are connected by assembling them so that they are always in the misalignment 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, the rotation shafts (19) and (19 ') are detached from the insertion holes (18) and (18'). Each link bar (8) (9) can be securely connected to the interlocking bracket (10) and each link bar (8) (9) can be removed from the interlocking bracket (10) when replacing parts. Work can be easily performed independently of each other.

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

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

  The third and fourth insertion holes (23) and (23 ') have upper large diameters into which the large-diameter shafts (20a and 20a') of the third and fourth rotating shaft portions (20 and 20 ') can be inserted. The shaft hole (23a) (23a '), the intermediate shaft hole (23b) (23b') into which the small diameter shaft (20c) (20c ') can be inserted, and the medium diameter shaft (20b) (20b') can be inserted The lower small-diameter shaft hole (23c) (23c ') has a polishing hole shape continuously provided in the vertical direction.

  In order to assemble one end (8a) of the first link bar (8) to the first link bracket (21), as shown in FIGS. 10 and 11, the third insertion hole ( 23), when the third rotating shaft portion (20) of the first link bar (8) is mounted, the large diameter shaft (20a) is inserted into the upper large diameter shaft hole (23a) and the small diameter shaft (20c ) Is inserted to the position reaching the intermediate shaft hole (23b). Next, the small diameter shaft (20c) is lowered through the intermediate shaft hole (23b), 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 A spacer member (24) is inserted into a gap formed between the front surface at one end (8a) of the first link bar (8) and the rear surface of the first link bracket (21), and the small diameter shaft (20c) Attach it so that it is bitten.

  In order to assemble one end (9a) of the second link bar (9) to the second link bracket (22), as shown in FIGS. 8 and 9, the second link is similar to the first link bar (8). When mounting the fourth rotating shaft part (20 ') of the second link bar (9) in the fourth insertion hole (23') of the bracket (22), the upper large-diameter hole (23a ') has a large diameter. The shaft (20a ′) is inserted, 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 hole (23c), and the medium diameter shaft (20b ′) is aligned with the lower small diameter hole (23c ′). In addition, a spacer member (25) is inserted into a gap formed between the front surface at one end (9a) of the second link bar (9) and the rear surface of the second link bracket (22), and a small diameter shaft ( 20c ') so that it can be bitten.

  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) which is interlocked with a locking operation by locking / unlocking a key (not shown). The dead bolt (27) has 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). Are engaged.

  As shown by the 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). ing. 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 fitting (10) provided to be movable up and down on the intermediate door (6), and locks the key device (26). By moving the operating rod (29) linked to the movement, the stopper piece (15) can be moved up and down within the movable range, and the stopper piece (15) is moved upward when the sliding door (3) is fully closed. A link lock mechanism serving as a locking device is configured to prevent this.

As shown in FIG. 13, the link lock mechanism is configured such that the distal end portion (31) of the hook-shaped portion (30) provided at the free end portion (29b) of the operating rod (29) is connected to the key device (26 ) Is locked so that it can be hooked on the back of the stopper piece (15) by tilting back and forth from the top toward the upper end of the stopper piece (15) of the interlocking bracket (10). Thus, the ascending movement of the interlocking metal fitting (10) can be prevented.
Therefore, the distance 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.

  As shown in FIG. 1 and FIG. 2, the sliding door (3) includes doors positioned at the front and rear, that is, the left door (4) and the intermediate door (6), and the intermediate door at the time of opening and closing the door. (6) and the right door (5) are linked to each other so that the front left door (4) and the middle door (6) are facing the respective summing parts (32) and (32 '). Linking members (34) are attached to the side end portions of the summing portions (33) and (33 ′) of (6) and the right door (5) so as to be spaced apart from each other.

  For example, as shown in FIGS. 14 to 16, the side end on the summing portion (33 ′) side of the rear right door (5) facing the summing portion (32 ′) side of the front intermediate door (6). The link member (34) attached to the base part is made of a synthetic resin material, and a base part (35) removably attached to the front surface of the side end part of the summing part (33 ') of the rear right door (5), This is formed by an engaging portion (36) projecting forward from the base portion (35).

  The engaging portion (36) has a contact portion (37) whose front end portion (36a) can contact the back surface of the front intermediate door (6), and is vertically movable on the inner side surface (36b) in the left-right direction. It has a concave groove (38) in the direction. The groove width of the recessed groove portion (38) is narrowed from the opening portion (38a) toward the inner bottom surface (38b), and the inner wall front surface (39) is formed from the opening portion (38a). The inclined surface is inclined backward toward the inner bottom surface (38b), and the rear surface (40) of the inner wall is an inclined surface inclined forward from the opening (38a) toward the inner bottom surface (38b).

  On the rear surface of the base portion (35), an L-shaped notch portion (41) is formed in which the side end portion of the summing portion (33 ') in the right door (5) is fitted. The notch (41) has an insertion tongue piece (42) projecting inward in the front-rear direction and inward in the left-right direction on the front surface of the inner wall, on the side surface of the inner wall in the left-right direction. Locking tongues (43) cut and raised toward the inside are provided respectively.

  As shown in FIG. 14, the insertion tongue piece (42) is inserted into the insertion hole (44a) formed through the front surface of the right door (5) from the front to the rear, and the tip (42a) It can come into contact with the back surface of the door (5). The locking tongue piece (43) is locked so as to face the locking hole (44b) opened in the side end surface of the summing portion (33 ′) of the right door (5), whereby the linkage member (34 ) Can be attached to the side end of the summing portion (33 ′) of the right door (5).

As shown in FIGS. 7, 9 and 14, the recessed groove (38) has a side end on the side of the summing portion (32) (32 ′) in the front front door (4) and the intermediate door (6). In the closed state, the L-shaped engagement pieces (45) and (45 ′) in a plan view, the tip portions of which are directed inward in the left-right direction and connected rearward, can be engaged with each other in the closed state. It is like that.
As a result, it is possible to reduce the processing man-hours and manufacturing costs, to prevent the generation of abnormal noise when external force in the front-rear direction acts on the door, and to keep the door in a good appearance when the door is closed. Can do.
In addition, the front and rear positioning between the doors can be facilitated, and the doors can be stored in a good appearance when the doors are closed.
Furthermore, even when the positional relationship between the front and rear doors is shifted back and forth, the locking piece of the front door is positioned rearward due to the inclination of both front and rear surfaces of the inner wall in the recessed groove portion. It acts in a direction that pulls forward and backward together with the door, facilitates the positioning of the doors in the front-rear direction, and allows the door to be housed in a good appearance when the door is closed.

It is the whole front view which looked at the door fully closed state of a cabinet provided with the device 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. FIG. 4 is a cross-sectional plan view taken along line IV-IV in FIG. 3. 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. It is an enlarged plan view of the XI part in FIG. 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 a cross-sectional top view of the linkage apparatus in the XIV-XIV line | wire of FIG. It is an enlarged front view of a linkage apparatus. It is a perspective view of a connection member.

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) The other end
(9) Second link bar
(9a) One end
(9b) The other end
(10) Interlocking bracket
(11) Roller
(12) Board
(12a) Mounting base
(13) Back plate
(14) Guide piece
(14a) Front end
(15) Stopper piece
(16) Slider
(17) Guide rail
(18) 1st insertion hole
(18a) Circular hole
(18b) Guide hole
(18 ') 2nd insertion hole
(18a ') Circular hole
(18b ') Guide hole
(19) First rotating shaft
(19a) Circular protrusion
(19b) Locking piece
(19 ') Second pivot shaft
(19a ') Circular protrusion
(19b ') Locking piece
(20) Third rotating shaft
(20a) Large diameter shaft
(20b) Medium diameter shaft
(20c) Small diameter shaft
(20 ') 4th rotating shaft
(20a ') Large diameter shaft
(20b ') Medium diameter shaft
(20c ') Small diameter shaft
(21) First link bracket
(22) Second link bracket
(23) Third insertion hole
(23a) Upper large-diameter shaft hole
(23b) Intermediate shaft hole
(23c) Small diameter shaft hole
(23 ') 4th insertion hole
(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) Deadbolt
(28) Bracket
(29) Working rod
(29a) Engagement rod
(29b) Free end
(30) bowl
(31) Tip
(32) (32 ') The summoning part of the front door
(33) (33 ') Back door summoning section
(34) Linking member
(35) Base
(36) Engagement part
(36a) Front end
(36b) Inner side
(37) Contact part
(38) Recessed groove
(38a) opening
(38b) Inner bottom
(39) Inner wall front
(40) Back of inner wall
(41) Notch
(42) Insert tongue
(42a) Tip
(43) Locking tongue
(44a) Insertion hole
(44b) Locking hole
(45) (45 ') Engagement piece

Claims (5)

The front opening in the housing can be opened and closed by a plurality of doors that are arranged to be movable in the left-right direction by overlapping the front and rear sequentially, and the doors located at the front and rear during the door opening and closing operation are linked members In the linkage device of the sliding doors that are linked to each other by
In the side door of the front door on the side of the summoning portion side, an L-shaped engaging piece in a plan view with the tip portion facing inward in the left-right direction is continuously provided rearward,
The linking member is made of a synthetic resin material and is detachably attached to the front surface of the side end portion on the summing portion side of the rear door, and protrudes forward from the base portion, the front end portion of the front door An engagement portion having a contact portion capable of contacting the back surface and an engaging portion having a vertical recessed groove portion on the inner side surface in the left-right direction, and in the closed state, the recessed groove portion is engaged with the front door. A sliding door linkage device characterized in that a mating piece is engaged.   2. The sliding door linkage device according to claim 1, wherein the groove width of the recessed groove portion is narrowed from the opening toward the inner bottom surface.   The concave groove portion has an inner wall front surface as an inclined surface inclined backward from the opening toward the inner bottom surface, and an inner wall rear surface thereof as an inclined surface inclined forward from the opening toward the inner bottom surface. The sliding door linkage device according to claim 2. The sliding door is composed of three doors, a left door, an intermediate door, and a right door, and one end of a pair of left and right link bars is pivotally connected to the back of both left and right doors, and the other The ends are connected to interlocking brackets provided on the back surface of the intermediate door so as to be able to be moved up and down by guide rails formed along the vertical direction. Have a link mechanism that is operated synchronously,
The interlocking bracket is formed of a substrate and a back plate spaced apart behind the substrate, and a link bar having one end connected to either the left door or the right door on the rear surface of the substrate. The other end of the link bar having one end connected to the other door is rotatably connected to the rear surface of the back plate while the other end is rotatably connected. The sliding door linkage device according to claim 1. A stopper piece, a dead bolt that is linked to the locking operation of the key device, and one end that is linked to this dead bolt are provided on the interlocking bracket and projecting toward the left door side that is located in front of the intermediate door. A link lock mechanism is constituted 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. 5. The sliding door linkage apparatus according to claim 4, wherein locking is performed.

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