KR102056115B1 - Triple sliding interlocking door for high load - Google Patents

Abstract

The present invention relates to a triple sliding interlocking door for a high load. More specifically, the triple sliding interlocking door for a high load comprises a middle door, a front door, and a rear door installed in parallel with each other between an upper rail and a lower rail to be slid. A middle support is installed on the upper surface of the middle door. A first roller block having a roller to rotate while sliding along a running rail formed on the inside of the upper rail and a plurality of pulleys with an interlocking wire wound thereon are installed on both ends of the upper surface of the middle support. A front support is installed on the upper surface of the front door. A second roller block having a roller to rotate while sliding along the running rail formed on the inside of the upper rail and a front gripping part to grip the interlocking wire are installed on the end of one side of the upper surface of the front support. Both ends of the interlocking wire cross each other to protrude towards the front gripping part, and then the protruding portion is compressed and gripped by the front gripping part. According to the present invention, the front gripping part and a rear gripping part are coupled to the interlocking wire while being positioned on the outside of the interlocking wire. Therefore, when the front gripping part and the rear gripping part move along the rotating interlocking wire, the movement is not disturbed by the pulleys, and thus the front and the rear gripping part can move to the end portions of the front and the rear support, thereby narrowing the overlapping width between the middle door and the front and the rear door to make the door slim to improve appearance.

Description

Triple sliding interlocking door for high load}

The present invention relates to a sliding interlocking door, and more particularly, to a high load triple sliding interlocking door in which a center door, a front door and a rear door can slide along a rail in a roller manner.

In general, the triple sliding interlocking door that opens and closes any one door to open and close other doors in a desired direction has been widely used in recent years because of the advantage that the door can be used more widely than the conventional two door system.

1 is an exemplary view showing a conventional triple sliding interlocking door.

Referring to FIG. 1, in the conventional triple sliding interlocking door, the pulley 11 is installed on the upper surface of the central door 10, the belt 12 surrounds the pulley 11, and the front door 20 is closed. The gripper 21 installed on the upper surface pressurizes the inside and the outside of the belt 12, and the gripper 31 provided on the upper surface of the rear door 30 is configured to press and hold the inside and outside of the belt 12.

In addition, in the conventional triple sliding interlocking door, a portion overlapping the front door 20 is generated at one side of the central door 10, and a portion overlapping the rear door 30 is generated at the other side of the central door 10. .

However, when the grippers 21 and 31 simultaneously pressurize the inside and the outside of the belt 12 as described above, the grippers 21 and 31 rotating along the belt 12 when the door is closed are pulleys 11. When adjacent to the gripper (21, 31) is caught on the pulley 11, the belt 12 is no longer able to rotate.

Therefore, the width L1 of the overlapping part of the center door 10 and the front door 20 and the width L2 of the overlapping part of the center door 10 and the rear door 30 are too wide to limit the slimming of the door. There is.

In addition, when the conventional triple sliding interlocking door is used for a long time, there is a serious problem that the belt 12 is often broken.

Korean Utility Model Registration Publication No. 20-0454224 (June 23, 2011)

The problem of the present invention devised to solve the above-described problems, the triple load for heavy load that can make the frame of the door slim by minimizing the width of the overlapping portion of the central door and the front door and the overlapping portion of the central door and the rear door To provide a sliding interlocking door.

The present invention devised to achieve the above object is a high-load triple sliding interlocking door including a central door and a front door and a rear door that is installed parallel to the upper rail and the lower rail sliding, the upper surface of the central door The central support is installed in the upper surface of the central support, the first roller block is provided with a roller that rotates while rotating along the running rail formed on the inner side of the upper rail and a plurality of pulleys wound on the interlocking wire, respectively at both ends. It is installed, the front support is installed on the upper surface of the front door, the upper surface of the front support for holding the second roller block and the interlocking wire provided with a roller that rotates while sliding along the running rail formed inside the upper rail A front gripper is installed at one end, and both ends of the interlocking wire cross each other to After the protruding toward grasp it characterized in that the projecting part is gripped by the front pressing grasp.

The front gripper has a lower block on which both ends of the interlocking wire is seated, and guide grooves are formed so that both ends of the interlocking wire are inserted. It characterized in that it comprises an upper block for crimping both ends of the interlocking wire.

The center door and the center support are connected by a cylinder member installed in the first roller block, a through hole is formed in the first roller block, a cover is installed on the upper surface of the through hole, and an insertion hole is provided on the upper surface of the center door. It is formed, the cylinder member is installed in the through-hole, the upper end is in contact with the cover, the shaft is installed in the lower end of the spring is pressed by the spring, the lower end of the shaft is inserted into the insertion hole It is characterized by consisting of a cap.

The front door and the front support are connected by a cylinder member installed on the second roller block, a through hole is formed in the second roller block, a cover is installed on the upper surface of the through hole, and an insertion hole is provided on the upper surface of the front door. It is formed, the cylinder member is installed in the through-hole, the upper end is in contact with the cover, the shaft is installed in the lower end of the spring is pressed by the spring, the lower end of the shaft is inserted into the insertion hole It is characterized by consisting of a cap.

A rear support is installed on an upper surface of the rear door, and a third roller block provided with a roller that rotates while sliding along a running rail formed on the inner side of the upper rail and a rear wave that grips the interlocking wire. The earth is installed at one end, and both ends of the interlocking wire intersect with each other and protrude toward the rear gripper, and then the protruding portion is pressed and gripped at the rear gripper.

The rear gripper has a lower block on which both ends of the interlocking wire is seated, and guide grooves are formed so that both ends of the interlocking wire are inserted. It characterized in that it comprises an upper block for crimping both ends of the interlocking wire.

The rear door and the rear support are connected by a cylinder member installed in the third roller block. A through hole is formed in the third roller block, a cover is installed on an upper surface of the through hole, and an insertion hole is provided on an upper surface of the rear door. It is formed, the cylinder member is installed in the through-hole, the upper end is in contact with the cover, the shaft is installed in the lower end of the spring is pressed by the spring, the lower end of the shaft is inserted into the insertion hole It is characterized by consisting of a cap.

The running rail formed inside the upper rail includes a first running rail and a second running rail located below the first running rail, and the rollers provided in the first to third roller blocks may include the first running rail. It characterized in that it comprises a horizontal roller which is disposed in a horizontal state on the running rail and rotates and a vertical roller that is disposed perpendicularly to the first running rail and the second running rail, respectively.

The upper surface of the front support and the rear support, characterized in that it is provided with an automatic closing damper for automatically closing the front door and the rear door and at the same time reduce the closing speed by interfering with the engaging portion installed in the upper rail.

According to the present invention, since the front gripper and the rear gripper are engaged with the interlocking wire in a state where the front gripper and the rear gripper are located outside of the interlocking wire, the movement is prevented by the pulley when the front gripper and the rear gripper move along the rotating interlocking wire. It can move up to the end of the front support and the rear support without receiving, thereby narrowing the overlap width between the center door and the front and rear doors, thereby making the door slimmer and improving aesthetics.

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be interpreted.
1 is an exemplary view showing a conventional triple sliding interlocking door,
Figure 2 is a full external perspective view schematically showing a high load triple sliding interlocking door according to an embodiment of the present invention,
3 is an enlarged perspective view of part A of FIG. 2;
4 is a perspective view showing an upper portion of a triple sliding interlocking door for a heavy load according to an embodiment of the present invention;
5 is a plan view and a partial enlarged view of FIG. 4;
6 is a partially enlarged perspective view illustrating a connection relationship between a central support and a front support in a triple sliding interlocking door for a heavy load according to an embodiment of the present invention;
7 is a plan view and a partial enlarged view of FIG. 4;
8 is a partially enlarged perspective view illustrating a connection relationship between a central support and a rear support in a triple load sliding door for heavy load according to an embodiment of the present invention;
9 is a perspective view and an exploded perspective view showing a first roller block in the high-load triple sliding interlocking door according to an embodiment of the present invention,
10 is a perspective view and an exploded perspective view showing the second roller block and the third roller block in the high load triple sliding interlocking door according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of a high load triple sliding interlock door according to the present invention.

Figure 2 is a full external perspective view schematically showing a high load triple sliding interlocking door according to an embodiment of the present invention, Figure 3 is an enlarged perspective view of part A of Figure 2, Figure 4 is a high load triple sliding linkage 5 and 7 are a plan view and a partially enlarged view of FIG. 4, FIG. 6 is a partially enlarged perspective view showing a connection relationship between a center support and a front support, and FIG. 8 is a center support and a rear view. 9 is a partially enlarged perspective view illustrating a connection relationship between supports, FIG. 9 is a perspective view and an exploded perspective view of a first roller block, and FIG. 10 is a perspective view and an exploded perspective view of a second roller block and a third roller block.

2 to 10, the high load triple sliding interlocking door according to an embodiment of the present invention, the upper rail disposed on the upper side of the wall, the lower rail disposed on the lower portion of the wall, the upper rail and the lower portion It is configured to include a central door and a front door and a rear door that is installed parallel to the slide between the rail, the central door is disposed between the front door and the rear door.

The upper rail 10 is installed in a straight line on the upper side of the center door 100, the front door 200 and the rear door 300, the central door 100, the front door 200 and the rear door 300 Slides along the upper rail 10.

Inside the upper rail 10, the running rail 11 is formed long along the longitudinal direction of the upper rail 10 in a state protruding a predetermined length toward the inner side.

In addition, the upper rail 10, the front locking portion 12 and the rear locking portion 12 are spaced apart.

Here, the front locking portion 12 is installed in the moving range of the front door 200, and causes interference with the front automatic closing damper 500 installed on the upper surface of the front support 210 to be described later.

Then, the rear side locking portion 12 is installed within the moving range of the rear door 300, and causes interference with the rear side automatic closing damper 500 installed on the upper surface of the rear support 310 to be described later.

The central support 110 is installed on the upper surface of the central door 100. The central support 110 is a member having a long bar shape formed to have the same length as the horizontal width of the central door 100, and the central door 100 through the two cylinder members 400 spaced apart from each other. Connected. The upper surface of the central support 110 is provided with a roller first roller block 111, the pulley 113 and the interlocking wire 120 is provided.

Here, the first roller block 111 is rotated while sliding along the upper rail 10 in a state seated on the running rail 11 formed inside the upper rail 10 to smoothly slide the central door 100. It is provided with a roller which helps the movement.

At this time, the running rail 11 formed inside the upper rail 10 is comprised by the 1st running rail 11a and the 2nd running rail 11b located under this 1st running rail 11a. The roller provided in the first roller block 111 is composed of a horizontal roller 111a and a vertical roller 111b. Here, the horizontal roller 111a is disposed in a horizontal state on the first running rail 11a and rotates, and the vertical rollers 111b are disposed up and down, and the first running rail 11a and the second running rail 11b. Rotate in a state where they are disposed vertically to each other.

Thus, the horizontal roller 111a horizontally disposed on the running rail 11 and the vertical roller 111b disposed up and down dually prevent the left and right distortions during sliding movement of the central door 100 and prevent the top and bottom vibrations so that stable running is achieved. It becomes possible.

And, the pulley 113 is installed on both side end portions of the central support 110, two are installed at one end and two are installed at the other end. Of course, one pulley may be installed at one end and the other end, respectively, but it is preferable to smoothly drive by reducing friction by installing two pulleys each having smaller diameters than one.

In addition, the interlocking wire 120 forms a closed curve surrounding the pulley 113, and since the pulley 113 is installed at each end of two pulleys 113, the interlocking wire 120 surrounds four pulleys.

Meanwhile, referring to the connection method of the central door 100 and the central support 110, the central door 100 and the central support 110 are connected through the cylinder member 400 installed on the first roller block 111. The first roller block 111 has a through hole 112a formed therein, and a cover 114 is installed on an upper surface of the through hole 112a, and an insertion hole 130 is formed on an upper surface of the central door 100. . Since the cylinder member 400 is installed in the through-hole 112a of the first roller block 111 and the insertion hole 130 of the central door 100, the central door 100 and the central support 110 are connected to each other.

Here, the cylinder member 400 is a spring 410 is installed in the through hole 112a and the upper end is in contact with the cover 114, and the shaft is installed at the lower end of the spring 410 and pressed by the spring 410 ( 420 and a cap 430 installed at the lower end of the shaft 420 and inserted into the insertion hole 130. Therefore, the cap 430 is automatically fitted into the insertion hole 130 of the central door 100 by the elastic force of the spring 410, thereby facilitating the connection between the central door 100 and the central support 110.

The front door 200 is located in front of the center door 100 when overlapping with the center door 100, the front support 210 is installed on the upper surface. The front support 210 is a long bar-shaped member formed in the same length as the horizontal width of the front door 200, and the front door 200 and the two cylinder members 400 are spaced apart Connected. A second roller block 211 and a front gripper 212 are installed at one end of the upper surface of the front support 210.

Here, the second roller block 211 is rotated while sliding along the upper rail 10 in a state seated on the running rail 11 formed inside the upper rail 10 to smoothly slide the front door 200. It is provided with a roller which helps the movement.

At this time, the running rail 11 formed inside the upper rail 10 is comprised by the 1st running rail 11a and the 2nd running rail 11b located under this 1st running rail 11a. The roller provided in the second roller block 211 includes a horizontal roller 211a and a vertical roller 211b. Here, the horizontal roller 211a is disposed in a horizontal state on the first running rail 11a and rotates, and the vertical roller 211b is disposed up and down, and the first running rail 11a and the second running rail 11b. Rotate in a state where they are disposed vertically to each other.

Thus, the horizontal roller 211a disposed horizontally on the running rail 11 and the vertical roller 211b disposed up and down dually prevent the left and right distortions during sliding movement of the front door 200, and prevent the up and down tremors so that stable driving is achieved. It becomes possible.

On the other hand, the front gripper 212 is to hold both ends of the interlocking wire 120 to the center door 100 and the front door 200 to move in conjunction, the front gripper 212 is the center door It is installed at one end of the front support 210 in the direction toward (100).

The front gripper 212 includes a lower block 212a and an upper block 212b which is installed to face the lower block 212a up and down. The lower block 212b is fixed to the upper surface of the front support 210 through bolting.

The upper block 212b is fixedly installed by bolting on the lower block 212a while facing the lower block 212a, and both ends of the interlocking wire 120 are inserted through the guide groove.

Here, when the holding method of the interlocking wire 120 by the front gripper 212 will be described, both ends of the interlocking wire 120 cross each other and protrude toward the front gripper 212 and then the protruding portion thereof is lowered. It is inserted into the guide groove between the block 212a and the upper block 212b so that both end portions are crimped and gripped by the front gripper 212. As a result, the interlock wire 120 is firmly coupled to the front gripper 212, and the front gripper 212 is coupled to the interlocking wire 120 in a state located outside the interlocking wire 120.

According to the present invention, by applying a wire other than a belt to the power transmission member, durability can be prevented from being degraded due to belt breakage, and both ends of the interlocking wire 120 cross each other and are crimped to the front gripper 212. The gripping can prevent the wire from bursting and reduce overlapping widths of the central door 100 and the front door 200 and minimize the gap between the central door 100 and the front door 200.

On the other hand, on the upper surface of the front support 210, the automatic closing damper 500 that automatically closes the front door 200 and reduces the closing speed at the same time by interfering with the engaging portion 12 installed on the upper rail (10) It is further provided.

In other words, the automatic closing damper 500 performs a function of automatically closing the front door 200 completely at the end of the upper rail 10 when the front door 200 is closed, as well as the front door 200. It performs a function to alleviate the closing speed.

On the other hand, when the connection method of the front door 200 and the front support 210 will be described, the front door 200 and the front support 210 are connected through the cylinder member 400 installed on the second roller block 211. The through roller 213a is formed in the second roller block 211, and a cover 213 is installed on the top surface of the through hole 213a, and an insertion hole 220 is formed on the top surface of the front door 200. . The front door 200 and the front support 210 are connected by installing the cylinder member 400 in the through hole 213a of the second roller block 211 and the insertion hole 220 of the front door 200.

Here, the cylinder member 400 is a spring 410 is installed in the through hole 213a and the upper end is in contact with the cover 213, and the shaft is installed at the lower end of the spring 410 and pressed by the spring 410 ( 420 and a cap 430 installed at the lower end of the shaft 420 and inserted into the insertion hole 220. Therefore, the cap 430 is automatically fitted into the insertion hole 220 of the front door 200 by the elastic force of the spring 410, thereby facilitating the connection between the front door 200 and the front support 210.

The rear door 300 is located at the rear of the central door 100 when overlapped with the central door 100, and the rear support 310 is installed on the upper surface. The rear support 310 is a member having a long bar shape formed to have the same length as the horizontal width of the rear door 300, and the rear door 300 through two cylinder members 400 spaced apart from each other. Connected. A third roller block 311 and a rear grip hole 312 are installed at one end of the upper surface of the rear support 310.

Here, the third roller block 311 is rotated while sliding along the upper rail 10 in a state seated on the running rail 11 formed inside the upper rail 10, the smooth sliding movement of the rear door 300. It is provided with a roller to help.

At this time, the running rail 11 formed inside the upper rail 10 is comprised by the 1st running rail 11a and the 2nd running rail 11b located under this 1st running rail 11a. The roller provided in the third roller block 211 includes a horizontal roller 311a and a vertical roller 311b. Here, the horizontal roller 311a is disposed in a horizontal state on the first running rail 11a and rotates, and the vertical roller 311b is disposed up and down, and the first running rail 11a and the second running rail 11b are rotated. Rotate in a state where they are disposed vertically to each other.

Thus, the horizontal roller 311a disposed horizontally on the running rail 11 and the vertical rollers 311b disposed up and down are suppressed from side to side distortion during sliding movement of the rear door 300, and the vertical movement is prevented to prevent stable running. It becomes possible.

On the other hand, the rear gripper 312, by holding both ends of the interlocking wire 120 to the center door 100 and the rear door 300 to move in conjunction, the rear gripper 312 is the center It is installed at one end of the rear support 310 in the direction toward the door 100.

The rear gripper 312 includes a lower block 312a and an upper block 312b installed to face the lower block 312a up and down. The lower block 312a is fixed to the upper surface of the rear support 310 through bolting.

The upper block 312b is fixedly installed on the lower block 312a by bolting to face the lower block 312a, and both ends of the interlocking wire 120 are inserted through the guide groove.

Here, the gripping method of the interlocking wire 120 by the rear gripper 312 will be described, the interlocking wire 120 has both ends intersect with each other and protrude toward the rear gripper 312 and then the protruding portion thereof is lowered. It is inserted into the guide groove between the block 312a and the upper block 312b so that both end portions are crimped and gripped by the rear gripper 312. As a result, the interlock wire 120 is firmly coupled to the rear gripper 312, and the rear gripper 312 is coupled to the interlocking wire 120 in a state located outside the interlocking wire 120.

According to the present invention, by applying a wire to the power transmission member instead of a belt, durability can be prevented from being degraded due to belt breakage, and both ends of the interlocking wire 120 cross each other and are crimped to the rear gripper 312. The gripping can prevent the wire from bursting and reduce overlapping widths of the central door 100 and the rear door 300 and minimize the gap between the central door 100 and the rear door 300.

On the other hand, the upper surface of the rear support 310, the automatic closing damper 500 to reduce the closing speed and at the same time to automatically close the rear door 300 by interfering with the engaging portion 12 installed inside the upper rail (10). ) Is further provided.

In other words, the automatic closing damper 500 performs a function of automatically closing the rear door 300 completely at the end of the upper rail 10 when the rear door 300 is closed, as well as the rear door 300. It performs a function to alleviate the closing speed.

Meanwhile, referring to the connection method of the rear door 300 and the rear support 310, the rear door 300 and the rear support 310 are connected through the cylinder member 400 installed on the third roller block 311. The through hole 313a is formed in the third roller block 311, and a cover 313 is installed on the top surface of the through hole 313a, and an insertion hole 320 is formed on the top surface of the rear door 300. . The cylinder member 400 is installed in the through hole 313a of the third roller block 311 and the insertion hole 320 of the rear door 300 so that the rear door 300 and the rear support 310 are connected.

Here, the cylinder member 400 is a spring 410 is installed in the through hole 313a and the upper end is in contact with the cover 313, and the shaft is installed at the lower end of the spring 410 and pressed by the spring 410 ( 420 and a cap 430 installed at the lower end of the shaft 420 and inserted into the insertion hole 320. Therefore, the cap 430 is automatically fitted into the insertion hole 320 of the rear door 300 by the elastic force of the spring 410, thereby facilitating the connection between the rear door 300 and the rear support 310.

In the above, the present invention has been described based on the preferred embodiments, but the technical idea of the present invention is not limited thereto, and modifications or changes can be made within the scope of the claims. It will be apparent to those skilled in the art, and such modifications and variations will belong to the appended claims.

10: upper rail 11: running rail
11a: first running rail 11b: second running rail
12: locking part 100: center door
110: center support 111: first roller block
111a, 211a, 311a: horizontal rollers 111b, 211b, 311b: vertical rollers
112a, 213a, and 313a: through hole 113: pulley
114, 213, 313: cover 120: interlocking wire
130, 220, 320: Insertion hole 200: Front door
210: front support 211: second roller block
212: Front gripper 212a, 312a: Lower block
212b, 312b: upper block 300: rear door
310: rear support 311: third roller block
312: rear grip region 400: cylinder member
410: spring 420: shaft
430: cap 500: automatic closing damper

Claims (9)

A triple sliding interlocking door including a central door 100, a front door 200, and a rear door 300 that are installed to slide in parallel between an upper rail 10 and a lower rail,
The central support 110 is installed on the upper surface of the central door 100, the roller that rotates while sliding along the running rail 11 formed inside the upper rail 10 on the upper surface of the central support 110. The first roller block 111 and the plurality of pulleys 113 wound on the interlocking wire 120 are provided at both ends, respectively.
The front support 210 is installed on the upper surface of the front door 200, the upper surface of the front support 210 is provided with a roller that rotates while sliding along the running rail 11 formed inside the upper rail (10). The second roller block 211 and the front gripper 212 for holding the interlocking wire 120 is installed at one end,
After both ends of the interlocking wire 120 intersect with each other and protrude toward the front gripper 212, the protruding portion is crimped and gripped by the front gripper 212,
The front gripper 212 includes a lower block 212a on which both ends of the interlocking wire 120 are seated; And
Guide grooves are formed so that both ends of the interlocking wire 120 are inserted, and both ends of the interlocking wire 120 are joined together with the lower block 212a by pressing both ends of the interlocking wire 120 facing each other up and down. A high-load triple sliding interlocking door, comprising: a crimping upper block 212b. delete According to claim 1, The central door 100 and the central support 110,
It is connected by the cylinder member 400 installed in the first roller block 111, the through-hole 112a is formed in the first roller block 111, the cover 114 is formed on the upper surface of the through-hole (112a) It is installed and the insertion hole 130 is formed on the upper surface of the central door 100,
The cylinder member 400 is installed in the through-hole 112a, the top of which is in contact with the cover 114, the spring 410, and is installed at the bottom of the spring 410 is pressed by the spring 410 The high load triple sliding interlocking door, characterized in that consisting of a shaft 420, and a cap 430 is installed in the lower end of the shaft 420 is inserted into the insertion hole (130). According to claim 1, The front door 200 and the front support 210,
It is connected by the cylinder member 400 installed in the second roller block 211, the through hole 213a is formed in the second roller block 211, the cover 213 is formed on the upper surface of the through hole 213a It is installed and the insertion hole 220 is formed on the upper surface of the front door 200,
The cylinder member 400 is installed in the through-hole 213a, the upper end of which is in contact with the cover 213 and the spring 410 is installed at the lower end of the spring 410 is pressed by the spring 410 The high load triple sliding interlocking door, characterized in that consisting of a shaft 420, the cap 430 is installed in the lower end of the shaft 420 is inserted into the insertion hole 220. The method of claim 1,
A rear support 310 is installed on an upper surface of the rear door 300, and a roller that rotates while sliding along a traveling rail 11 formed inside the upper rail 10 is provided on an upper surface of the rear support 310. The provided third roller block 311 and the rear gripper 312 for holding the interlocking wire 120 is installed at one end,
The both ends of the interlocking wires 120 intersect each other and protrude toward the rear gripper 312, and then the protruding portion thereof is crimped and gripped by the rear gripper 312. The method of claim 5, wherein the rear gripper 312,
A lower block 312a on which both ends of the interlocking wire 120 are seated; And
Guide grooves are formed so that both ends of the interlocking wire 120 are inserted, and both ends of the interlocking wire 120 together with the lower block 312a by pressing both ends of the interlocking wire 120 facing each other up and down. An upper block 312b compressed;
Triple sliding interlocking door for high loads comprising a. According to claim 5, The rear door 300 and the rear support 310,
It is connected by the cylinder member 400 installed in the third roller block 311, the through-hole 313a is formed in the third roller block 311, the cover 313 is formed on the upper surface of the through-hole 313a It is installed and the insertion hole 320 is formed on the upper surface of the rear door 300,
The cylinder member 400 is installed in the through-hole 313a, the upper end is in contact with the cover 313 and the spring 410 is installed on the lower end of the spring 410 is pressed by the spring 410 The high load triple sliding interlocking door, characterized in that consisting of a shaft 420, and a cap 430 is installed in the lower end of the shaft 420 is inserted into the insertion hole (320). The method according to claim 1 or 5,
The running rail 11 formed inside the upper rail 10 includes a first running rail 11a and a second running rail 11b disposed below the first running rail 11a.
The rollers provided in the first to third roller blocks 111, 211, and 311 are horizontal rollers 111a, 211a, and 311a which are disposed in a horizontal state on the first travel rail 11a and rotate. A high load triple sliding interlocking door comprising a vertical roller (111b, 211b, 311b) disposed vertically on the running rail (11a) and the second running rail (11b) to rotate. The method of claim 1,
On the upper surfaces of the front support 210 and the rear support 310, the front door 200 and the rear door 300 is automatically closed by interfering with the engaging portion 12 installed on the upper rail 10, respectively. Automatic closing damper 500 to reduce the closing speed at the same time; Triple sliding interlocking door for high loads, characterized in that is further provided.

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