KR20240077237A - Connector for sliding and hinged door - Google Patents

Abstract

The present invention provides a door connector for an interlocked door in both sliding and hinged manners, which sufficiently secures a gap due to sagging of a door to prevent friction between a connection block and guide rails. The door connector for an interlocked door in both sliding and hinged manners comprises: a main frame including a horizontal frame disposed on an upper end and vertical frames on both sides; a rail frame installed on the horizontal frame, and having at least one rail disposed therein along a short axis direction, wherein each rail extends along a long axis direction; a rotation frame forming a front end portion of one side of the rail frame, separated from the rail frame, and rotatably shaft-coupled to the main frame; at least one sliding door piece slidably installed along each rail of the rail frame and moving to the rotation frame; a hinged door piece fixedly installed on the rotation frame; and an interlocking unit installed between the plurality of sliding door pieces and the hinged door piece to be interlocked with each other to move.

Description

Door connection device for sliding hinged interlocking door {CONNECTOR FOR SLIDING AND HINGED DOOR}

The present disclosure relates to a door connecting device for a sliding hinged interlocking door that combines sliding and hinged methods in a complex manner.

In the case of a hinged door, sufficient space must be secured corresponding to the rotation radius of the door around the rotation axis. It is difficult to use in places where there is no space to rotate the door or where there are space restrictions. In the case of a sliding door, it is difficult to expand the size of the doorway or window because a sufficient area for the door to be placed on the wall along the path of the door must be secured.

Accordingly, by improving the opening and closing structure of the conventional door, a composite door that combines the swing type and the sliding type is being developed. Composite doors can achieve excellent results in terms of space utilization.

Accordingly, the present applicant has developed an interlocking door for both sliding and closing doors. For example, Korean Patent No. 10-1946873 and Korean Patent No. 10-2062223 disclose a composite sliding door developed and registered as a patent by the present applicant.

The above-mentioned conventional devices are provided with an interlocking device including a pulley and a belt fastened and rotated between the pulleys so that a plurality of door pieces can move in conjunction with each other, and the sliding door piece on which the pulley is installed is sandwiched between them. Connection blocks are installed on the hinged door pieces and sliding door pieces arranged on both sides and fixed to the belt, so that they are interlocked as the belt rotates.

However, the conventional device has a structure in which the connecting block is coupled to the guide rail of the door equipped with the interlocking device and moves along the guide rail, resulting in a phenomenon in which the connecting block does not move smoothly along the guide rail.

In other words, as time passes, the door is pushed down by the load and the connection block is pressed, reducing the clearance between it and the guide rail. As a result, the door piece cannot move smoothly due to friction between the connection block and the guide rail.

Recently, the demand for sliding doors and interlocking doors has gradually increased, and a solution to this problem is urgently needed.

This project is to provide a door connecting device for a sliding hinged interlocking door that secures sufficient clearance due to the deflection of the door, prevents friction between the connecting block and the guide rail, and allows the door piece to move smoothly.

The interlocking door of this embodiment includes a main frame including a horizontal frame disposed at the top and vertical frames on both sides, and is installed on the horizontal frame. At least one rail is disposed on the inside along the minor axis direction, and each rail moves in the major axis direction. A rail frame extending along, forming a tip of one side of the rail frame, separated from the rail frame and rotatably axially coupled to the main frame, slidingly installed along each rail of the rail frame and moving to the rotating frame It may include at least one sliding door piece, a swing door piece fixed to the rotating frame, and an interlocking portion installed between the swing door piece and a plurality of sliding door pieces to move in conjunction with each other.

The interlocking door is installed between the rail frame and the rotating frame to selectively connect each rail of the rail frame and the rotating frame, and prevents sagging of the rotating frame to make the height of the rail frame and the rotating frame the same. It may further include a retaining connector.

The connector includes a first connector installed at the tip of the rail frame and connected to the rail of the rail frame, a second connector installed at the tip of the rotating frame, in contact with the first connector and connected to the rail of the rotating frame, and the second connector installed at the tip of the rotating frame and connected to the rail of the rotating frame. A step formed on the first connector between the facing front surface of the first connector and the second connector, and a support piece protruding from the front surface of the second connector at a position corresponding to the step and spanning the step, The support piece may be structured to span the step to prevent sagging of the rotating frame with respect to the rail frame.

The interlocking unit includes an interlocking frame installed at the bottom of the middle door piece among the sliding door pieces, a pair of pulleys installed on both sides of the interlocking frame, a belt connected and rotated between the pulleys, and a guide formed on both sides of the interlocking frame. Each is slidably coupled to a rail, one end is coupled to an inner belt, and the other end includes a hinged door piece disposed on both sides with the middle door piece in between, and a pair of connecting blocks respectively installed on the outer door piece. can do.

The connecting block is divided into two, and a first member is fixedly installed on the hinged door piece or the outer door piece, is slidably installed on the guide rail of the interlocking frame, and forms a gap so that it can move up and down and is coupled to the first member. It may include a second member.

The first member is a first body formed with a flange at the front end and installed by being inserted into a fitting groove of a fixed frame provided at the bottom of the hinged door piece or the outer door piece, and is formed on the outside of the first body so that both ends face each other. It may include a holder portion that is gathered and coupled to the second member.

The second member forms a first guide groove on the upper and lower surfaces to be guided by being inserted into the guide rail of the interlocking frame, and a second body coupled to the belt moves up and down in the holder portion of the first member on the upper and lower surfaces outside the second body. It may include a second guide groove that is formed to be fitted and coupled.

The first member has a structure in which one end of the holder part is closed, and the open end of the holder part is provided by a finishing cap installed at the end of the fixed frame and extending to the holder part to fix the first member to the fixed frame. It may be a structure that prevents the second member from being separated from the holder portion.

The width of the first guide groove may be relatively smaller than the vertical width of the guide rail, forming a vertical gap between the guide rail and the first guide groove.

The width of the second guide groove may be relatively smaller than the width between the ends of the holder part, forming a vertical gap between the holder part and the second guide groove.

The gap between the second guide groove and the tip of the holder portion may be formed to a size corresponding to the gap between the first guide groove and the guide rail.

According to this embodiment, even when the door is sagging due to a load, a sufficient gap between the connecting block and the guide rail is ensured, thereby minimizing friction between the connecting block and the guide rail.

Accordingly, when the door is opened and closed, the connecting block slides smoothly along the guide rail, preventing malfunction of the door even when used for a long time.

Figure 1 is a schematic perspective view showing a sliding hinged interlocking door according to this embodiment.
Figure 2 is a schematic cross-sectional view of a sliding hinged interlocking door according to this embodiment.
Figure 3 is a schematic perspective view showing a connection block according to this embodiment.
Figure 4 is a schematic cross-sectional view for explaining the connection block operation of the sliding door and interlocking door according to this embodiment.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later. The embodiments described below may be modified into various forms without departing from the concept and scope of the present invention. As much as possible, identical or similar parts are indicated using the same reference numerals in the drawings.

The terminology used below is only for referring to specific embodiments and is not intended to limit the invention. As used herein, singular forms include plural forms unless phrases clearly indicate the contrary. As used in the specification, the meaning of "comprising" is to specify a specific characteristic, area, integer, step, operation, element, and/or component, and to specify another specific property, area, integer, step, operation, element, component, and/or group. It does not exclude the existence or addition of .

Hereinafter, preferred embodiments of the present invention will be described. However, the following example is only a preferred example of the present invention and the present invention is not limited to the following example.

In the following description, the door piece may refer to an individual door panel that opens and closes the door. In addition, a sliding door piece refers to a door piece that opens and closes by sliding, and a hinged door piece refers to a door piece that opens and closes by rotating.

This embodiment explains as an example a structure in which one swinging door piece is provided with two sliding door pieces. This embodiment is not limited to this, and a structure provided with one or three or more sliding door pieces is also applicable.

Figures 1 and 2 show the configuration of a sliding hinged interlocking door according to this embodiment.

As shown, the interlocking door 100 includes a main frame 10, a rail frame 20, a rotating frame 30, a sliding door piece 40, a swing door piece 43, a swing door piece 43, and It may include an interlocking part 70 that allows the plurality of sliding door pieces 40 to move in conjunction with each other.

Additionally, a connector 60 is installed between the rail frame 20 and the rotating frame 30.

The main frame 10 is a square-shaped frame structure forming an outer framework, and may include a horizontal frame 11 forming an upper end and a vertical frame 13 forming both side ends. The size of the main frame 10 can be modified in various ways. The main frame 10 may further include a bottom frame (not shown) forming the bottom to form a grid.

A rail frame 20 may be installed along the horizontal frame 11. The rail frame 20 slideably supports a plurality of sliding door pieces 40.

The rail frame 20 has at least one rail 21 arranged along the minor axis direction, and each rail 21 has a structure extending along the major axis direction. In this embodiment, two rails 21 are formed along the minor axis direction so that two sliding door pieces 40 can be installed. Here, the minor axis direction refers to the z-axis direction in FIG. 1, which is the relatively short side in Cartesian coordinates, and the major axis direction refers to the x-axis direction, which refers to the relatively long side. As far as Figure 1, the y-axis direction is called the up-down direction, the upper side along the y-axis direction is called upper or upper, and the lower side is called lower or lower.

As shown in FIG. 2, a wheel 44 is installed at the top of the sliding door piece 40 and is placed on the rail 21 of the rail frame 20 and rolls along the rail 21. Accordingly, the sliding door piece 40 can move in the major axis direction while being supported across the rail 21 via the wheel 44 and the wheel rolls along the rail.

One end of the rail frame 20 is cut off to form a rotating frame 30 that is separated from the rail frame 20. The rotating frame 30 forms the front end of one side of the rail frame 20 and is rotatably coupled to the main frame 10. For this purpose, a rotation axis may be installed in the vertical frame 13 or the horizontal frame 11. The rotating frame 30 is coupled to the rotating shaft and rotates via the rotating shaft.

The rotating frame 30 is a part separated from the rail frame 20, and the rail 31 is formed in the same way as the rail frame 20. The connector 60 installed between the rail frame and the rotating frame connects the rail frame and each rail 21 and 31 of the rotating frame.

The connector 60 is installed at the tip of the rail frame 20, and is installed at the tip of the first connector 61, which is connected to the rail 21 of the rail frame, and the rotating frame 30, and rotates in contact with the first connector 61. It may include a second connector 62 connected to the rail 31 of the frame.

The first connector 61 and the second connector 62 each form separate and distinct components. The size and shape of the first connector 61 and the second connector 62 can be modified in various ways.

The first connector 60 is fixedly installed at the front end of the rail frame 20 and forms the front end of the rail frame 20. The second connector 62 is fixedly installed at the distal end of the rotating frame 30, forms the distal end of the rotating frame 30, and moves together with the rotating frame 30. As the rotary frame 30 rotates, the second connector 62 moves to the first connector 61 fixed to the rail frame 20 and engages or is separated from each other.

Accordingly, when the rotating frame 30 and the rail frame 20 are arranged in a straight line, the rail 21 of the rail frame 20 and the rail 31 of the rotating frame 30 are also arranged in a straight line with each other without being misaligned. The connector 60 connects each rail 31 and 31 between the rotating frame 30 and the rail frame 20. Therefore, when the sliding door piece 40 is moved, the wheel 44 of the sliding door piece moves smoothly from the rail frame 20 to the rotating frame 30 along the rails 21 and 31 connected via the connector 60. It rolls over. Accordingly, the sliding door piece 40 can be moved between the rail frame 20 and the rotating frame 30.

The hinged door piece 43 is disposed on the outermost side along the y-axis direction, which is the minor axis direction in FIG. 1 . The hinged door piece 43 may be fixedly installed on the rotating frame 30. Accordingly, when the rotating frame 30 rotates, it rotates together to open and close. The lower end of the hinged door piece (43) is axially coupled to a rotating shaft installed on the main frame (10).

The sliding door piece 40 is opened and closed by sliding along the x-axis direction, which is the major axis direction in FIG. 1. In this embodiment, two sliding door pieces 40 are provided. Hereinafter, for convenience of explanation, the sliding door piece adjacent to the hinged door piece 43 will be referred to as the middle door piece 41, and the sliding door piece 40 disposed outside the hinged door piece 43 will be referred to as the outer door piece 42. The sliding door piece 40 may refer to both the middle door piece 41 and the outer door piece 42.

In this embodiment, an interlocking portion 70 may be installed between each door piece. The two sliding door pieces 40 and the swing door pieces 43 move in conjunction with each other via the interlocking portion 70. Interlocking may mean that when one sliding door piece 40 is moved, the entire sliding door piece 40 moves in the same direction so that it is completely unfolded or overlaps each other.

The interlocking portion 70 of this embodiment includes an interlocking frame 71 installed at the bottom of the middle door piece 41 among the sliding door pieces, a pair of pulleys 73 installed on both sides of the interlocking frame 71, and a pulley. A belt 74 connected and rotated between (73) is slidably coupled to the guide rails 75 formed on both sides of the interlocking frame 71, and one end is coupled to the inner belt 74 and the other end may include a pair of connection blocks 80 each installed on the hinged door piece 43 and the outer door piece 42 disposed on both sides with the middle door piece 41 in between.

The hinged door piece 43 and the outer door piece 42 disposed on both sides with the middle door piece 41 in between are each fixed to the belt 74 via the connecting block 80, and the belt 74 moves. They can move together in conjunction with each other.

The door of this embodiment has a structure in which a wheel 44 is installed at the top of the sliding door piece 40 and supported on a rail, and the interlocking portion 70 may be installed at the bottom of the door piece.

To install the interlocking portion 70, an interlocking frame 71 is installed at the bottom of the middle door piece 41, and an outer door piece 42 and a hinged door piece 43 are disposed on both sides of the middle door piece 41. A fixed frame 72 is installed at the bottom of each. A pair of connection blocks 80 are fixedly installed on the fixing frames 72 installed at the lower ends of the outer door piece 42 and the hinged door piece 43, respectively. The fixing frame 72 is for fixing the connection block 80, and its shape can be modified in various ways. As shown in FIG. 3, the connection block 80 can be fixed to the front end of the fixing frame 72 by a finishing cap 77 mounted on the fixing frame 72 via a bolt or the like.

Inside the interlocking frame 71, a pair of pulleys 73 are rotatably installed at both ends of the middle door piece 41 in the long axis direction. The belt 74 is coupled to a pair of pulleys 73 and rotated. Guide rails 75 are formed through both sides of the interlocking frame 71 along the minor axis direction so that the connecting block 80 connected to the belt 74 can be moved along the major axis direction. As the belt 74 moves, the connecting block 80 installed on the belt 74 slides along the guide rail 75.

Accordingly, an outer door piece 42 and a hinged door piece 43 are installed in each connecting block 80, so that the outer door piece 42 and the hinged door piece 43 can move together with the connecting block 80. There will be.

Accordingly, when the sliding door piece 40 is slid, the middle door piece 41 moves relative to the fixed hinged door piece 43 and the belt 74 rotates, and the connection block 80 is attached to the belt 74. The outer door piece 42 connected via is also moved. Accordingly, the entire sliding door piece 40 moves together to open and close, or moves toward the rotating frame 30 and overlaps to open.

In this embodiment, the connection block 80 is structured in two separate pieces and joined together to increase the vertical movement range of the door.

For this purpose, as shown in Figures 3 and 4, the connection block 80 is divided into two and includes a first member 81 fixed to the hinged door piece 43 or the outer door piece 42, and an interlocking frame ( It may include a second member 82 that is slidably installed on the guide rail 75 of 71) and is coupled to the first member 81 while forming a gap so as to be able to move up and down.

Accordingly, the second member 82 can move up and down between the guide rails 75 and the separated first member 81 as well.

As mentioned, as the door pieces sag downward due to their own weight, the connecting block 80 connecting the door pieces goes down together and is pressurized and adhered to the guide rail 75. As a result, as friction between the conventional connecting block 80 and the guide rail 75 increases, the connecting block 80 cannot move smoothly along the guide rail 75, resulting in poor sliding of the door.

The connection block 80 of this embodiment is divided into two to increase the vertical clearance to more than twice that of the conventional one, thereby reducing friction between the connection block 80 and the guide rail 75 even if the door is sagging due to its own weight during use. This prevents the door from moving smoothly.

The connection blocks 80 are arranged opposite each other with the interlocking frame 71 in between and are connected to the fixed frame 72 of the outer door piece 42 and the fixed frame 72 of the hinged door piece 43, respectively. Each connection block 80 has the same structure except that it is arranged oppositely. Hereinafter, the structure in which the connection block 80 is installed between the fixed frame 72 and the interlocking frame 71 of the hinged door piece will be described as an example, and the connection block 80 is installed between the fixed frame 72 and the interlocking frame 71 of the outer door piece. This is replaced with the structure of the connection block 80.

As shown in FIGS. 3 and 4, the first member 81 has a flange 83 at its tip and is inserted into the fitting groove 76 of the fixing frame 72 provided at the bottom of the hinged door piece or the outer door piece. It may include a first body 84 that is fitted and installed, and a holder portion 85 formed on the outside of the first body 84 and coupled to the second member 82 with both ends facing each other.

A flange 83 is formed to protrude in the vertical direction at the inner end of the first body 84, that is, at the end facing the fixed frame 72, and a flange 83 is formed so that the flange 83 can be inserted into the fixed frame 72. ) A fitting groove 76 of a shape corresponding to ) is formed.

Accordingly, the flange 83 of the first body 84 is fitted into the fitting groove 76 of the fixed frame 72, so that the first member 81 can be fixedly installed on the fixed frame 72. A finishing cap 77 is mounted on the tip of the fixed frame 72 to block the fitting groove 76. The finishing cap 77 is a plate structure and may be installed at the tip of the fixing frame 72 via, for example, a bolt. Accordingly, the first member 81 is fixed to the fixing frame 72 by a finishing cap 77 that is inserted into the fitting groove 76 and blocks the fitting groove 76.

A holder portion 85 is formed integrally with the outer tip of the first body 84. The holder part 85 is a part where the second member 82 is coupled and can be understood as having the same structure as the guide rail 75.

By forming a gap between the two opposing ends of the holder part 85 and the second member 82, the second member 82 can move up and down with respect to the holder part 85.

The second member 82 forms first guide grooves 87 on the upper and lower surfaces to be guided by being inserted into the guide rail 75 of the interlocking frame 71, and includes a second body 86 and a second body 86 coupled to the belt. ) It may include second guide grooves 88 formed on the outer upper and lower surfaces to be movably fitted and coupled to the holder portion 85 of the first member 81.

The second body 86 has first guide grooves 87 formed vertically recessed at its inner end, that is, at the end facing the interlocking frame 71. The first guide groove 87 is inserted into the guide rail 75 formed on the side of the interlocking frame 71 and moves along the guide rail 75.

The width A of the first guide groove 87 is relatively smaller than the vertical width B of the guide rail 75, forming a vertical gap between the guide rail 75 and the first guide groove 87. Accordingly, the second member 82 can move up and down with respect to the interlocking frame 71 by the amount of clearance between the guide rail 75 and the first guide groove 87.

The width A of the first guide groove 87 can be understood as the thickness between the first guide grooves 87 formed vertically in FIG. 4. In addition, the vertical width B of the guide rail 75 can be understood as the distance between the top and bottom of the guide rail 75 formed through the side of the interlocking frame 71.

In this embodiment, the difference between the width A of the first guide groove 87 and the upper and lower width B of the guide rail 75 may be approximately 2 mm.

A second guide groove 88 is formed integrally with the outer tip of the second body 86. The second guide groove 88 is a part coupled to the holder portion 85 of the first member 81 and may be formed in the same structure as the first guide groove 87.

The second member 82 is connected to the first member 81 by inserting a second guide groove 88 into the holder portion 85.

The width C of the second guide groove 88 is the width between the ends of the holder part 85 so that the second guide groove 88 of the second member 82 can move up and down with respect to the holder part 85. It is relatively smaller than (D), and can form a vertical gap between the holder portion 85 and the second guide groove 88. Accordingly, the second member 82 can move up and down with respect to the first member 81 by the amount of clearance between the holder portion 85 and the second guide groove 88.

The width C of the second guide groove 88 can be understood as the thickness between the second guide grooves 88 formed vertically in FIG. 4. In addition, the width D between the ends of the holder part 85 can be understood as the distance between the two upper and lower ends of the holder part 85.

In this embodiment, the gap between the second guide groove 88 and the tip of the holder portion 85 may be formed to a size corresponding to the gap between the first guide groove 87 and the guide rail 75. For example, the difference in width between the width of the second guide groove 88 and the tip of the holder portion 85 may be approximately 2 mm.

In this way, the connection block 80 has vertical clearance between the first guide groove 87 and the guide rail 75, as well as vertical clearance between the second guide groove 88 and the holder portion 85 of the first member 81. By adding clearance, it can move up and down up to 4mm. Therefore, even when the door is sagging by more than 2 mm, the door can slide smoothly.

Here, the first member 81 and the second member 82 are coupled to each other and move together along the long axis direction. For this purpose, the first member 81 has a structure in which one end of the holder part 85 is closed, and the open end of the holder part 85 is blocked by the closing cap 77.

The holder part 85 of the first member 81 has a structure in which only one end of both ends along the long axis direction is open, and the second guide groove 88 of the second member 82 is easily inserted through the open end. It can be connected by inserting it.

By fastening the finishing cap 77 to the tip of the fixing frame 72 while the first member 81 is inserted into the fitting groove 76 of the fixing frame 72, the open end of the holder portion 85 is finished. It is blocked by the cap (77). The finishing cam extends from the fixing frame to the holder part 85, and the tip of the holder part 85 is blocked by the extended finishing cap 77. Accordingly, the second member 82 cannot be separated from the holder portion 85 and can remain coupled to the first member 81.

In this way, the vertical movement width of the door can be further increased by adding the vertical clearance between the first member 81 and the second member 82 separately from the vertical clearance between the second member 82 and the guide rail 75. There will be. Therefore, even if the door is sagging due to a load, it is possible to minimize the friction between the second member 82 and the guide rail 75 compared to the prior art, thereby preventing poor movement of the door.

Although exemplary embodiments of the present invention have been shown and described as described above, various modifications and other embodiments will occur to those skilled in the art. These modifications and other embodiments are to be considered and included in the appended claims without departing from the true spirit and scope of the present invention.

10: main frame 11: horizontal frame
20: rail frame 21,31: rail
30: Rotating frame 40: Sliding door
41: middle door 42: outer door
43: swing door 44: wheel
60: connector 61: first connector
62: second connector 70: linkage part
71: Interlocking frame 72: Fixed frame
73: Pulley 74: Belt
75: guide rail 76: insertion part
77: Finishing cap 80: Connection block
81: first member 82: second member
83: Flange 84: First body
85: Holder portion 86: Second body
87: first guide groove 88: second guide groove

Claims (4)

A main frame including a horizontal frame disposed at the top and vertical frames on both sides, a rail frame installed on the horizontal frame and at least one rail disposed on the inside along the minor axis direction, each rail extending along the major axis direction, the rail frame A rotating frame that forms the front end of one side of the rail frame and is separated from the rail frame and rotatably coupled to the main frame, and at least one sliding door piece that is slidably installed along each rail of the rail frame and moves to the rotating frame. , a hinged door piece fixed to the rotating frame, and an interlocking portion installed between the hinged door piece and a plurality of sliding door pieces to move in conjunction with each other,
The interlocking unit includes an interlocking frame installed at the bottom of the middle door piece among the sliding door pieces, a pair of pulleys installed on both sides of the interlocking frame, a belt connected and rotated between the pulleys, and a guide formed on both sides of the interlocking frame. Each is slidably coupled to a rail, one end is coupled to an inner belt, and the other end includes a hinged door piece disposed on both sides with the middle door piece in between, and a pair of connecting blocks respectively installed on the outer door piece. do,
The connecting block is divided into two, and a first member is fixedly installed on the hinged door piece or the outer door piece, is slidably installed on the guide rail of the interlocking frame, and forms a gap so that it can move up and down and is coupled to the first member. A door connecting device for a sliding hinged interlocking door including a second member. According to claim 1,
The first member is a first body formed with a flange at the front end and installed by being inserted into a fitting groove of a fixed frame provided at the bottom of the hinged door piece or the outer door piece, and is formed on the outside of the first body so that both ends face each other. It includes a holder portion that is gathered and coupled to the second member,
The second member forms a first guide groove on the upper and lower surfaces to be guided by being inserted into the guide rail of the interlocking frame, and a second body coupled to the belt moves up and down in the holder portion of the first member on the upper and lower surfaces outside the second body. A door connecting device for a sliding hinged interlocking door including a second guide groove that is formed to be fitted and coupled. According to claim 2,
The first member has a structure in which one end of the holder part is closed, and the open end of the holder part is provided by a finishing cap installed at the end of the fixed frame and extending to the holder part to fix the first member to the fixed frame. A door connecting device for a sliding hinged interlocking door with a structure that prevents the second member from being blocked and separated from the holder portion. According to claim 2,
The width of the first guide groove is relatively smaller than the vertical width of the guide rail, forming a vertical gap between the guide rail and the first guide groove,
A door connecting device for a sliding hinged interlocking door in which the width of the second guide groove is relatively smaller than the width between the ends of the holder part, forming a vertical gap between the holder part and the second guide groove.

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