KR101771181B1 - Interlocking device of triple sliding door - Google Patents

Abstract

The present invention relates to an interlocking device of a triple sliding door having a semiautomatic door opening and closing structure capable of manually opening and automatically closing doors interlocked to be overlapped triply. The interlocking device of a triple sliding door comprises: a rail portion which is provided with a first guide portion, a second guide portion, and a third guide portion in a lengthwise direction of an installation plate portion on the center of the lower portion, the front surface, and the rear surface of the installation plate portion fixed at the upper portion of a door frame; a slider portion which includes a first slider installed to be movable along the first guide portion to fix an intermediate door, a second slider installed to be movable along the second guide portion to fix a front door, and a third slider installed to be movable along the third guide portion to fix a rear door; a belt portion which is installed to rotate between a pair of pulleys installed at the upper portion of the first slider; an interlocking portion which is fitted into the second guide portion and the third guide portion, and fixes and couples the second slider and the third slider to the belt portion such that the front door and the rear door relatively move with respect to the intermediate door; and a cylinder portion which is installed in the first guide portion of the rail portion, is connected to the first slider, and moves the intermediate door in a door closing direction at the time of opening and closing the door to automatically close the door.

Description

TECHNICAL FIELD [0001] The present invention relates to an interlocking device for a triple sliding door,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a triple sliding door interlock device, and more particularly, to a triple sliding door interlock device for slidingly interlocking triple doors.

Generally, when a plurality of doors are installed by a sliding method, the interlocking type triple sliding doors that open and close any one of the three doors to open and close the other doors in the desired direction are installed It has been widely used recently because of its advantage that it can be used widely.

As a prior art of such interlocking triple sliding door, it is disclosed in Korean Patent Registration No. 10-0724592 entitled " Opening / Closing Interlocking Device ". However, the conventional art has a drawback in that the door must be manually opened or closed by a user as a method of manually opening and closing the door.

In addition, when the door is closed, a shock may be applied to the door frame to cause a noise or damage to the door due to a large impact. If the door is tightly closed and a child is caught between the door and the door, .

Korean Registered Patent Publication No. 0724592 (published on April 4, 2007)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an interlocking device for a triple sliding door having a semi-automatic door opening / closing structure capable of manually opening and closing a door interlocked in triple overlapping manner.

It is another object of the present invention to provide a triple sliding door interlock device capable of slowly closing a door through buffering action due to elasticity when the door is closed.

According to an aspect of the present invention, there is provided a coupling device for a triple sliding door, including a first guide portion, a second guide portion, and a second guide portion on a lower center, A third guide portion formed in the longitudinal direction of the mounting plate portion, respectively; A first slider installed to be movable along the first guide portion and fixed to the intermediate door, a second slider movably installed along the second guide portion and fixed to the front door, And a third slider to which the rear door is fixed; A belt portion rotatably installed between a pair of pulleys provided on an upper portion of the first slider; And the second slider and the third slider are fixedly coupled to the belt portion so that the front door and the rear door move relative to the middle door when the belt portion moves An interlocking part; And a cylinder part installed in the first guide part of the rail part and connected to the first slider, and moving the middle door in a direction in which the door is closed when the door is opened and closed so that the door is automatically closed.

Further, the rear door may be fixed to the rail portion.

The cylinder portion may include a spring cylinder that slowly closes the door while absorbing the shock due to a buffering action due to elasticity at a point where the front door is closed to the door frame.

The cylinder portion may include a cylinder body installed in the first guide portion and driven to extend and retract the cylinder rod along the moving direction of the intermediate door; And a connecting bracket having one side connected to the first slider and the other side connected to the cylinder rod, wherein the length of the cylinder rod of the cylinder body increases when the door is opened and closed, The first slider connected to the first guide portion moves along the first guide portion to move the middle door in the door opening direction or in the closing direction so that the door can be opened and closed.

When the door is opened, the length of the cylinder rod is increased, so that the first slider connected to the cylinder rod moves along the first guide portion to move the middle door in the door opening direction, When the cylinder rod is closed, the length of the cylinder rod is reduced by the spring elastic restoring force, and the first slider connected to the cylinder rod moves along the first guide portion to move the middle door in a direction in which the door is closed so that the door can be closed have.

The cylinder body may include: a hollow cylinder case fixed to the first guide portion; A cylinder rod inserted into the cylinder case and movably coupled in the longitudinal direction of the cylinder case; And an elastic member installed in the cylinder case so as to be connected to the cylinder rod and providing an elastic force to the cylinder rod so that the cylinder rod moves in a direction to be inserted into the cylinder case.

In addition, the cylinder rod may have a connecting groove portion formed on the outer circumferential surface of the rod distal end portion, and the connecting bracket may be formed with a connecting ring portion that is inserted into the connecting groove portion.

The connection bracket may include: a stationary support plate fixedly coupled to the plate surface of the first slider; And a connection support plate extending perpendicularly to the fixed support plate and having the connection hook portion formed on one side thereof.

In addition, a moving guide groove is formed along the first guide portion on a lower surface of the mounting plate portion corresponding to the first guide portion, a pair of fixing pieces are inserted and coupled into the moving guide groove, At least one of the pair of the fixed pieces is provided movably along the movement guide groove so as to adjust the interval of the fixing piece to correspond to the length of the cylinder case .

The triple sliding door interlock device of the present invention has the following effects.

First, in the present invention, the user manually opens the door when the door is opened and closed, and when the door is opened, the middle door can be moved in the door closing direction by using the elastic restoring force of the cylinder portion, thereby automatically closing the triple door. That is, it is a semiautomatic opening / closing structure that can open and automatically close the door manually.

Second, according to the present invention, when the door is closed, the door is slowly closed while absorbing the shock due to the buffering action due to the elasticity of the spring cylinder, so that when the door is closed, a child is caught between the door and the side door frame, Can be prevented.

Third, since the door is semi-automatically opened and closed by applying a spring cylinder without using electricity, electricity according to the automatic opening and closing of the door can be saved, and normal operation is possible even during power failure.

1 is a perspective view of an interlock device of a triple sliding door according to an embodiment of the present invention;
2 is an exploded perspective view of a coupling device for a triple sliding door according to an embodiment of the present invention;
3 is a perspective view showing a coupling structure of a cylinder part in a coupling device for a triple sliding door of the present invention.
4 is a perspective view of a rail part in the interlock device of the triple sliding door of the present invention.
5 is a cross-sectional view taken along line AA of FIG.
6 is an exploded perspective view of the interlocking device of the triple sliding door according to the present invention, with the rail portion removed.
7 is a perspective view and a cross-sectional view of the first and second articulating openings according to the first embodiment in the interlocking device for a triple sliding door of the present invention.
FIG. 8 is a perspective view and a cross-sectional view of a first and a second interlocking mechanism according to a second embodiment in the interlocking device for a triple sliding door of the present invention. FIG.
9 is a perspective view and a cross-sectional view of the first and second auxiliary linking members in the linking device of the triple sliding door of the present invention.
10 is a perspective view of the cylinder portion in the interlock device of the triple sliding door of the present invention.
11 is a sectional view taken along the line BB in Fig.
12 is a perspective view of a connection bracket;
13 is a cross-sectional view showing a coupling structure of a magnet portion and a fixing piece, and a cylinder portion and a connection bracket in a coupling device for a triple sliding door of the present invention.
14 is a perspective view showing the opening and closing operation states of the triple sliding door in the interlocking device of the triple sliding door according to the present invention.
15 is a view showing an operation state in which a triple sliding door is opened in the interlocking device of the triple sliding door of the present invention.
16 is a view showing an operation state in which the triple sliding door is closed in the interlocking device of the triple sliding door of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an interlocking device for a triple sliding door according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

FIG. 1 is a perspective view of a triple sliding door interlock device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a triple sliding door interlock device according to an embodiment of the present invention, Fig. 4 is a perspective view of the rail part in the interlocking device of the triple sliding door according to the present invention, Fig. 5 is a sectional view taken along line AA of Fig. 4 And FIG. 6 is an exploded perspective view of the interlocking device of the triple sliding door of the present invention, with the rail portion removed.

1 to 6, a coupling device for a triple sliding door according to an embodiment of the present invention includes a rail part 100, a slider part 200, a belt part 300, an interlock part 400, A magnet portion 500, and a cylinder portion 600. [0041]

The rail portion 100 is fixed to the upper portion of the door frame 1 (see Figs. 15 and 16), and three sliding doors such as the middle door 10, the front door 20 and the rear door 30 slide Guide to movement. The door frame 1 consists of a pair of left and right vertical frames 1a and 1b (see Figs. 15 and 16) and an upper horizontal frame 1c (see Figs. 15 and 16).

The rail portion 100 may include a mounting plate portion 110, a first guide portion 120, a second guide portion 130, and a third guide portion 140.

The mounting plate portion 110 is fixed to the upper transverse frame 1c of the door frame 1. [

The first guide part 120 is formed in the longitudinal direction of the mounting plate part 110 at the lower center of the mounting plate part 110.

The first guide part 120 guides the middle door 10 to the lower center of the rail part 100 to be movable in the longitudinal direction of the rail part 100 and includes a first vertical wall 121, Two vertical walls 122, a first guide rail 121a, and a second guide rail 122a.

The first vertical wall 121 is formed in the longitudinal direction of the mounting plate 110 perpendicular to the lower surface at one point located on the front side with respect to the center point of the mounting plate 110.

The second vertical wall 122 is formed on the lower surface of the mounting plate 110 in parallel with the first vertical wall 121 at a position located on the rear side with respect to the center point of the mounting plate 110.

Here, the terms front and rear refer to the right and left sides of the diagram in the rail 100 shown in Figs. 4 and 5, respectively.

The first guide rails 121a extend horizontally at the lower end of the first vertical wall 121. [

The second guide rails 122a extend horizontally at the lower end of the second vertical wall 122. [

A moving guide groove 111 is formed on the lower surface of the mounting plate portion 110 corresponding to the first guide portion 120 along the first guide portion 120 to form a cylinder portion 600, The cylinder fixing piece 630 is inserted into the movement guide groove 111. [

The second guide portion 130 is a portion for guiding the front door 20 so as to be movable in the longitudinal direction of the rail 100 and includes a first vertical wall 121, a third vertical wall 123, 1 guide rails 121a, a third guide rail 123a, and a first reinforcing rib 126. [

The first vertical wall 121 is formed in the longitudinal direction of the mounting plate 110 perpendicular to the lower surface at one point located on the front side with respect to the center point of the mounting plate 110.

The third vertical wall 123 is formed at a lower surface of the mounting plate 110 parallel to the first vertical wall 121 at another point located on the front side of the mounting plate 110 than the first vertical wall 121 .

The first guide rails 121a extend horizontally at the lower end of the first vertical wall 121. [

The third guide rail 123a extends horizontally at the lower end of the third vertical wall 123. [

The first reinforcing rib 126 is formed to connect the middle portion of the first vertical wall 121 and the third vertical wall 123.

The first reinforcing rib 126 includes a first horizontal rib 126a extending horizontally at an intermediate point between the first and third vertical walls 121 and 123 and a second horizontal rib 126b extending parallel to the first and third vertical walls 121 and 123, A pair of first vertical ribs 126b formed to be spaced apart from the lower surface of the rib 126a and a pair of second vertical ribs 126b protruding horizontally at a midpoint between the first vertical ribs 126b, And a pair of first projecting pieces 126c forming the second projecting portions 126d.

The third guide portion 140 is formed in the longitudinal direction of the mounting plate portion 110 parallel to the first guide portion 120 on the lower rear surface of the mounting plate portion 110.

The third guide portion 140 is a portion for guiding the rear door 30 so as to be movable in the longitudinal direction of the rail 100 and includes a second vertical wall 122, a fourth vertical wall 124, A second guide rail 122a, a fourth guide rail 124a, and a second reinforcing rib 127. [

The second vertical wall 122 is formed on the lower surface of the mounting plate 110 in parallel with the first vertical wall 121 at a position located on the rear side with respect to the center point of the mounting plate 110.

The fourth vertical wall 124 is formed on the lower surface of the mounting plate 110 in parallel with the second vertical wall 122 at another point located on the rear side of the mounting plate 110 than the second vertical wall 122 .

The second guide rails 122a extend horizontally at the lower end of the second vertical wall 122. [

The fourth guide rail 124a extends horizontally at the lower end of the fourth vertical wall 124.

The second reinforcing rib 127 is formed to connect the middle portion between the second vertical wall 122 and the fourth vertical wall 124.

The second reinforcing rib 127 has a second horizontal rib 127a extending horizontally at an intermediate point between the second and fourth vertical walls 122 and 124 and a second horizontal rib 127b extending parallel to the second horizontal A pair of second vertical ribs 127b spaced apart from the lower surface of the rib 127 and a second horizontal rib 127b protruding horizontally at a midpoint between the second vertical ribs 127b, And a pair of second projecting pieces 127c forming the second projecting portions 127d.

The middle door 10 is located under the first guide part 120 of the rail part 100 and is movable in the longitudinal direction of the rail part 100. When the triple sliding doors are all closed, the middle door 10 is positioned at the center of the opening of the door. At the upper end of the middle door 10, a through hole 211 of the first slider 210 A pair of pivot shafts 11 (see Fig. 14) are formed so as to be spaced apart from each other so as to be fixedly engaged with the first slider 210.

The front door 20 is positioned below the second guide portion 130 of the rail 100 and is movable in the longitudinal direction of the rail 100. When the triple sliding doors are all closed, the front door 20 is positioned on the front side of the opening of the door. On the upper end of the front door 20, a first interlocking opening 410 and a first auxiliary interlocking opening A pair of pivot shafts 21 (see Fig. 14) are formed so as to be spaced apart from each other so as to be fixedly coupled to the pivot shaft 430.

The rear door 30 is positioned below the third guide portion 140 of the rail 100 and is movable in the longitudinal direction of the rail 100. When the triple sliding doors are all closed, the rear door 30 is positioned at the rear side of the opening of the door, and at the upper end of the rear door 30, a second interlocking opening 420 and a second auxiliary interlocking opening A pair of pivot shafts 31 (see Fig. 4) are fixedly formed to be spaced apart from each other so as to be fixedly coupled to the pivot shaft 440.

However, the present invention is not limited to this, and may be applied to any one of the triple doors, for example, the front side (front side), the rear side The door 20 or the rear door 30 may be fixed to the rail portion 100.

The slider portion 200 is installed on the rail portion 100 so as to be slidable along the longitudinal direction of the rail portion 100.

The slider unit 200 may include a first slider 210, a second slider 220, and a third slider 230.

The first slider 210 is movably installed along the first guide portion 120 and the intermediate door 10 is fixed. The first slider 210 is a flat plate member movably fitted in the first guide portion 120 and has a pair of pivot shafts 11 formed on the upper portion of the middle door 10 at one side of the first slider 210, A through hole 211 is formed for inserting the through hole. Further, a belt unit 300 to be described later is rotatably installed on the upper portion of the first slider 210. Reference numeral 213 denotes a hole for inserting the shaft of the pulley 310, and reference numeral 215 denotes a groove for inserting the windscreen and noise suppression brush 216.

The movable member 240 is coupled to both ends of the first slider 210. The movable member 240 is provided between the first guide rail 121a and the second guide rail 122a so that the first slider 210 can move along the first guide portion 120, A guide groove 241, a second guide groove 242, a fitting groove 243, and a through hole 244.

The first guide groove 241 is formed on one side of the movable body 240 so that the first guide rail 121a is fitted and is movable along the first guide rail 121a.

The second guide groove 242 is formed on the other side of the movable body 240 so that the second guide rail 122a is fitted and movable along the second guide rail 122a.

The through hole 244 is a pin hole for fixing the first slider 210 and the movable body 240, and the first slider 210 is fixed to the first slider 210, And is formed at a position corresponding to the pin hole of the slider 210.

The second slider 220 is movably installed along the second guide portion 130 and is fixed to a front door 20 movably installed on the front surface of the intermediate door 10.

The second slider 220 is a flat plate member fixedly coupled to a lower portion of the first interlocking member 410 and the first auxiliary linking member 430 and is formed to be movable in the second guide unit 130. Reference numeral 221 denotes a pin hole, reference numeral 223 denotes a through hole for inserting the pivot shaft 21, and reference numeral 225 denotes a groove for fitting the windshield and noise suppression brush 226.

The third slider 230 is movably installed along the third guide portion 140 and is fixed to the rear door 30 movably installed on the rear surface of the middle door 10.

The third slider 230 is a flat plate member fixedly coupled to the lower portion of the second interlocking member 420 and the second auxiliary linking member 440 and is formed to be movable in the third guide unit 140. Reference numeral 231 denotes a pin hole, reference numeral 233 denotes a through hole for inserting the pivot shaft 31, and reference numeral 235 denotes a groove for inserting the windshield and the noise suppression brush 236.

The belt portion 300 is rotatably installed between a pair of pulleys 310 installed on the upper portion of the first slider 210. Reference numeral 311 denotes a pulley shaft.

The interlocking portion 400 is movably fitted in the second guide portion 130 and the third guide portion 140 and the second slider 220 and the third slider 230 are fixedly coupled to the belt portion 300 So that the front door 20 and the rear door 30 move relative to the intermediate door 10 when the belt part 300 moves.

The interlocking part 400 may include a first interlocking part 410 and a second interlocking part 420

The first linking member 410 is fixed to the upper portion of the second slider 220 and is fixedly coupled to the belt unit 300. The first linking unit 410 is movably inserted into the second guide unit 130 to be engaged with the belt unit 300, The middle door 10 and the front door 20 interlock with each other and move relative to each other.

The second link 420 is fixed to the upper portion of the third slider 230 and fixedly coupled to the belt unit 300. The second link 420 is movably inserted into the third guide unit 140 to be engaged with the belt unit 300, The middle door 10 and the rear door 30 interlock with each other and move relative to each other.

FIG. 7 is a perspective view and a cross-sectional view of the first and second articulating openings according to the first embodiment in the interlocking device for a triple sliding door of the present invention.

7, the first interlocking member 410 according to the first embodiment includes a first belt fixing part 411, a front door fixing part 413, a first guiding part 415, (Not shown).

The first belt fixing part 411 is fitted and fixed to one side of the belt part 300 and is moved together with the movement of the belt part 300.

The front door fixing portion 413 is a plate-shaped member formed adjacent to the first belt fixing portion 411 and fixed to the upper portion of the second slider 220, A hole 413a is formed.

The first guider part 415 is provided at one end of the upper side of the front door fixing part 413 and is provided with a third guiding part 413 fitted to the first guiding rail 121a and movable along the first guiding rail 121a, Grooves 415a are provided.

The second guider part 417 is provided at the other end of the upper part of the front door fixing part 413 and is provided with a fourth guiding part 431 which is fitted to the third guiding rail 123a and is movable along the third guiding rail 123a. Grooves 417a are provided.

Reference numeral 413b is a pin hole for fitting the pin 222 to fix the first interlocking member 410 to the second slider 220 in a fixed manner.

The second interlocking member 420 according to the first embodiment includes a second belt fixing portion 421, a rear door fixing portion 423, a third guiding portion 425 and a fourth guiding portion 427 can do.

The second belt fixing portion 421 is fitted on the other side of the belt portion 300 and is fixedly engaged with the belt portion 300 and is moved together with the movement of the belt portion 300.

The rear door fixing portion 423 is a plate-shaped member formed adjacent to the second belt fixing portion 421 and is fixed to the upper portion of the third slider 230 and has a through hole A hole 423a is formed.

The third guider portion 425 is provided at one end of the upper portion of the rear door fixing portion 423 and is provided with a fifth guiding portion 423 which is fitted to the second guiding rail 122a and is movable along the second guiding rail 122a. Grooves 425a are provided.

The fourth guider portion 427 is provided at the other end of the upper portion of the rear door fixing portion 423 and is provided with a sixth guiding rail portion 423a which is fitted to the fourth guiding rail portion 124a and is movable along the fourth guiding rail portion 124a. A groove 427a is provided.

Reference numeral 423b is a pin hole for fitting the pin 232 to fix the second interlocking member 420 to the third slider 230 in a fixed manner.

FIG. 8 is a perspective view and a cross-sectional view of a first and a second interlocking mechanism according to a second embodiment in the interlocking device for a triple sliding door of the present invention.

8, the first interlocking member 410 according to the second embodiment may include a first belt fixing part 411, a front door fixing part 413, and a first guiding part 415 have.

The first belt fixing part 411 is fitted and fixed to one side of the belt part 300 and is moved together with the movement of the belt part 300.

The front door fixing portion 413 is a plate-shaped member formed adjacent to the first belt fixing portion 411 and fixed to the upper portion of the second slider 220, A hole 413a is formed.

The first guider part 415 is provided adjacent to one side of the front door fixing part 413 on the upper part of the connecting part 412 connecting the first belt fixing part 411 and the front door fixing part 413, And a third guide groove 415a fitted to the first guide rail 121a and movable along the first guide rail 12a.

Reference numeral 413b is a pin hole for fitting the pin 222 to fix the first interlocking member 410 to the second slider 220 in a fixed manner.

The second interlocking member 420 according to the second embodiment may include a second belt fixing portion 421, a rear door fixing portion 423, and a second guiding portion 425.

The second belt fixing portion 421 is fitted on the other side of the belt portion 300 and is fixedly engaged with the belt portion 300 and is moved together with the movement of the belt portion 300.

The rear door fixing portion 423 is a plate-shaped member formed adjacent to the second belt fixing portion 421 and is fixed to the upper portion of the third slider 230 and has a through hole A hole 423a is formed.

The second guider part 425 is provided adjacent to one side of the rear door fixing part 423 on the upper part of the connecting part 422 connecting the second belt fixing part 421 and the rear door fixing part 423, And a fourth guide groove 425a fitted to the second guide rail 122a and movable along the second guide rail 122a.

The interlocking portion 400 includes a first auxiliary linkage 430 fixed to the second slider 220 and spaced apart from the first linkage 410 so as to be movable along the second guide portion 130, And a second auxiliary link 440 fixed to the third slider 230 to be movable along the third guide unit 140 so as to be spaced apart from the second link 420.

FIG. 9 is a perspective view and a cross-sectional view of the first and second auxiliary linking drums in the linking device of the triple sliding door of the present invention.

9, the first auxiliary coupling member 430 may include a front door fixing portion 431, a first auxiliary guider portion 433, and a second auxiliary guider portion 435.

The front door fixing portion 431 is a plate-shaped member fixed to the upper portion of the second slider 220 and has a through hole 431a for fixing the front door 20 to the center.

The first auxiliary guider 433 includes a first guide groove 433a formed at one end of the front door fixing portion 431 and fitted to the first guide rail 121a and movable along the first guide rail 121a, .

The second guide guider 435 is provided at the other end of the front door fixing portion 431 with a second guide groove 435a formed to be movable along the third guide rail 123a.

The second auxiliary linkage 440 may include a rear door fixing portion 441, a third auxiliary guider portion 443, and a fourth auxiliary guider portion 445.

The rear door fixing portion 441 is a plate-shaped member fixed to the upper portion of the third slider 230 and has a through hole 441a for fixing the rear door 30 to the center thereof.

The third auxiliary guider section 443 includes a third guide groove 443a formed at one end of the rear door fixing section 441 and fitted to the second guide rail 122a to be movable along the second guide rail 122a, .

The fourth auxiliary guide portion 445 is provided at the other end of the rear door fixing portion 441 with a fourth guide groove 445a formed to be movable along the fourth guide rail 124a.

Fig. 10 is a perspective view of a cylinder part in a triple sliding door interlock device of the present invention, Fig. 11 is a sectional view taken along line B-B of Fig. 10, and Fig. 12 is a perspective view of a connection bracket.

10 to 12, the cylinder part 600 is installed in the first guide part 120 of the rail part 100 and is connected to the first slider 210 so that the middle door 10 can be opened / The door is moved in the closing direction so that the door is automatically closed. When the cylinder unit 600 is installed to be connected to the front door 20 without being installed to be connected to the middle door 10, problems may arise such as door deviation when the force transmitted to the door is unbalanced, Therefore, it is preferable that the cylinder part 600 is installed to be connected to the middle door 10 as in the present embodiment.

The cylinder part 600 may be a spring cylinder that slowly closes the door while absorbing the shock due to the buffering action of elasticity at the point where the front door 20 is closed to the door frame 1. [

The cylinder portion 600 may include a cylinder body 610 and a connection bracket 620.

The cylinder body 610 is installed in the first guide portion 120 of the rail portion 100 and is driven to extend and contract the cylinder rod 613 along the moving direction of the intermediate door 10.

The cylinder body 610 may include a cylinder case 611, a cylinder rod 613, an elastic member 615, and a stopper 617.

The cylinder case 611 has a hollow cylindrical tube shape with both ends thereof opened, and is fixed to the first guide portion 120. A moving guide groove 111 (see FIG. 5) is formed along the first guide portion 120 on the bottom surface of the mounting plate portion 110 corresponding to the first guide portion 120, The pair of cylinder fixing pieces 630 are inserted and coupled. Both ends of the cylinder case 611 can be fastened to the rail 100 by fastening bolts 631 to a pair of cylinder fastening pieces 630. For this purpose, a bolt hole 612a for fastening the bolt 631 is formed on the both-end fixing base 612 of the cylinder case 611. At least one of the pair of cylinder fixing pieces 630 is movably installed along the movement guide groove 111 to adjust the interval of the cylinder fixing pieces 630 to correspond to the length of the cylinder case 611.

The cylinder rod 613 is inserted into the cylinder case 611 and is movably coupled in the longitudinal direction of the cylinder case 611. The outer diameter of the cylinder rod 613 matches the inner diameter of the cylinder case 611 or has a slightly smaller diameter so that the cylinder rod 613 can be inserted into the cylinder case 611 and move.

In the present embodiment, the cylinder rod 613 is formed in the shape of a hollow tube, but the present invention is not limited to this, and the cylinder rod 613 may be formed in a solid tube shape.

The cylinder rod 613 has a connection groove portion 614 formed on the outer circumferential surface of the rod end portion so that the connection ring portion 624 of the connection bracket 620 to be described later can be inserted into the connection groove portion 614. The connection cap 616 formed with the connection groove 614a is connected to the opening of the front end of the cylinder rod 613. However, the connection cap 616 is not limited to this, May be integrally formed at the tip end of the cylinder rod 613.

The elastic member 615 is installed in the cylinder case 611 so as to be connected to the cylinder rod 613 so that the cylinder rod 613 is inserted into the cylinder case 611 when no external force is applied to the cylinder rod 613 And provides elastic restoring force to the cylinder rod 613 so as to move in the direction of FIG. The elastic member 615 may be composed of a compression coil spring (hereinafter, referred to as 615) to provide an elastic restoring force. The compression coil spring has one end fixed to the rear end of the cylinder case 611 and the other end fixed to the fixed stopper 617 to be described later.

The fixed stopper 617 is engaged with the rear end opening of the cylinder rod 613 and serves to fix the other end of the elastic member 615. The fixed stopper 617 may be provided with a rubber packing 618 on the outer circumferential surface of the insertion end to seal the inner circumferential surface of the cylinder case 611.

One side of the connection bracket 620 is coupled to the first slider 210, and the other side is connected to the cylinder rod 613. [

The connection bracket 620 may be formed in a substantially U-shape so that the connection claw portion 624 can be fitted into the connection groove portion 614 of the cylinder rod 613. [

The connection bracket 620 may include a fixed support plate 621 and a connection support plate 623. The connection bracket 620 is preferably made of a metal material having excellent strength. However, the connection bracket 620 may be made of a non-metal material or a synthetic resin material.

The fixed support plate 621 is formed in a flat plate shape and fixedly coupled to the upper or lower plate surface, preferably the lower plate surface, of the first slider 210. To this end, a plurality of bolt holes 621a for fastening the bolts 625 (see FIG. 2) are formed on the fixed support plate 621.

The connection support plate 623 is formed in a flat plate shape and extends perpendicularly to the fixed support plate 621. The connection support plate 623 is formed at one side with a connection claw portion 624 to be inserted into the connection groove portion 614 of the cylinder rod 613. The connection claw portion 624 can be formed in a substantially U shape.

The cylinder rod 613 of the cylinder body 611 is extended when the door is opened and closed and the first slider 210 connected to the cylinder rod 613 by the connection bracket 620 is moved in the first guide The middle door 10 is moved in the door opening direction or the closing direction so as to open and close the door.

For example, when the door is opened, the length of the cylinder rod 613 is increased, and the first slider 210 connected to the cylinder rod 613 moves along the first guide portion 120, When the door is closed, the length of the cylinder rod 613 is reduced by the elastic restoring force of the spring 615, and the first slider 210 connected to the cylinder rod 613 The intermediate door 10 is moved in the door closing direction by moving along the first guide portion 120 so that the door is closed.

The cylinder part 600 is installed on the upper part of the door so that the rocker doors 11 and 12 are installed below the middle door 10, the front door 20 and the rear door 30, 21 and 31, Figs. 15 and 16).

FIG. 13 is a cross-sectional view showing a coupling structure of a magnet portion and a fixing piece, and a cylinder portion and a connection bracket in a coupling device for a triple sliding door according to the present invention.

The magnet portion 500 may be fixed to one side of the rail portion 100, for example, the third guide portion 140, so that the rear door 30 is fixed to the left side as shown in FIG.

The magnet unit 500 includes a permanent magnet 510 and a second horizontal rib 127a of the second reinforcing rib 127 formed on the third guide unit 140 of the rail 100 and a second protrusion 127c And fixed to the plate-like fixing piece 520 by a bolt 530. The plate- A fixing plate 450 is formed on the upper portion of the second auxiliary link 440 and is fixed to the magnet unit 500 by a magnetic force.

The cylinder body 611 is mounted on the first guide portion 120 of the rail portion 100 and fastened and fixed to the lower surface of the mounting plate portion 110 with bolts 631. [ At this time, the cylinder case 611 is fixed to the lower surface of the mounting plate 110 by fastening the cylinder case 611 to the cylinder fixing piece 630 inserted in the moving guide groove 111 formed on the lower surface of the mounting plate 110 with bolts 631 . The connection bracket 620 is fixed to the lower surface of the first slider 210 by a fixing support plate 621 of the connection bracket 620 and a connection ring 624 formed on the connection support plate 623 of the connection bracket 620, Can be engaged with the connection groove portion 614 of the cylinder rod 613.

The operating state of the interlocking device of the triple sliding door constructed as described above will be described in detail with reference to Figs. 14 to 16. Fig.

14 is a perspective view showing the opening and closing operation states of the triple sliding door in the interlock device of the triple sliding door according to the present invention.

14, the three doors, i.e., the middle door 10, the front door 20, and the rear door 30 are kept in an overlapped state. In this state, the rear door 30, Is fixed to the left side of the rail part (100) by the guide part (500). In this state, the cylinder rod 613 of the cylinder part 600 is extended when the door is opened and closed, and the first slider 210 connected to the cylinder rod 613 by the connection bracket 620 is extended 1 guide unit 120, the middle door 10 is moved in the door opening direction or the closing direction so that the door is opened and closed.

15 is a view showing an operation state in which a triple sliding door is opened in the interlock device of a triple sliding door of the present invention.

15, when the user moves the front door 20 in the direction of the arrow, that is, in the door opening direction to open the door, the first interlocking opening 410 located at the upper portion of the front door 20 And the first auxiliary linkage 430 (see FIG. 14) are moved in the arrow direction. In this case, since the belt unit 300 is fixed to the first interlocking member 410, the belt unit 300 moves in conjunction with the movement of the first interlocking member 410, and the belt unit 300 moves The intermediate door 10 is also moved in the direction of the arrow. At this time, since the rear door 30 is fixed to the rail 100 at one side by the magnet part 500, only the middle door 10 is moved without moving the rear door 30 do.

When the intermediate door 10 moves in the direction of the arrow, that is, in the door opening direction, the first slider 210 to which the intermediate door 10 is fixed is moved along the first guide portion 120, The length of the cylinder rod 613 connected to the first slider 210 is increased in the arrow direction. At this time, the cylinder rod 613 is extended in the direction of the arrow by the movement of the intermediate door 10, and the cylinder rod 613 is moved in the direction opposite to the arrow to the intermediate door 10 by the spring 615 inside the cylinder body 611, Thereby providing an elastic restoring force.

16 is a view showing an operation state in which the triple sliding door is closed in the interlock device of the triple sliding door of the present invention.

16, the spring 615 of the cylinder portion 600 is elastically restored by the resilient restoring force of the cylinder portion 600. As a result, when the front door 20 is opened, (613) is reduced in length while moving in the direction of the arrow. At this time, the first slider 210 connected to the cylinder rod 613 is moved along the first guide portion 120 by the connection bracket 620 to move the intermediate door 10 in the arrow direction, that is, the door closing direction As the intermediate door 10 moves, the front door 20 moves in the direction of the arrow by interlocking with the first and second interlocking openings 410 and 420, thereby closing the door. At this time, the door is slowly closed while absorbing the shock due to the buffering action of the spring portion of the cylinder portion 600 at the point where the front door 20 is closed to the right vertical frame 1b of the door frame 1. [ Finally, the front door 20 is positioned on the right side of the drawing, the middle door 10 is positioned at the center, and the rear door 30 is positioned on the left side, so that the door remains completely closed.

In the interlocking device of the triple sliding door of the present invention, the user manually opens the door when the door is opened and closed. When the door is opened, the middle door is moved in the door closing direction by using the elastic restoring force of the cylinder portion, . That is, the present invention is a semi-automatic opening / closing structure capable of manually opening and automatically closing a door. In addition, when the door is closed, the door is slowly closed while absorbing the shock due to the buffering action due to the elasticity of the spring cylinder, thereby preventing a safety accident caused by a child being caught between the door and the side door when the door is closed . In addition, since the present invention does not require the use of electricity and the door is semi-automatically opened and closed by applying a spring cylinder, electricity due to the automatic opening and closing of the door can be saved, and normal operation is possible even during a power failure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the present invention. You will understand. It is therefore to be understood that the embodiments described above are in all respects illustrative and not restrictive. It is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

100: rail part 110: mounting plate part
120: first guide portion 121: first vertical wall
122: second vertical wall 123: third vertical wall
124: fourth vertical wall 126: first reinforcing rib
127: second reinforcing rib 130: second guide portion
140: third guide part 200: slider part
210: first slider 220: second slider
230: third slider 300:
310: pulley 400:
410: first interlocking member 411: first belt fixing unit
413: front door fixing part 415: first guider part
417: second guider section 420: second interlocking section
421: second belt fixing portion 423: rear door fixing portion
425: third guider section 427: fourth guider section
430: first auxiliary interlocking part 431: front door fixing part
433: first auxiliary guider section 435: second auxiliary guider section
440: second auxiliary linkage 441: rear door fixing portion
443: third auxiliary guider section 445: fourth auxiliary guider section
500: magnet part 510: permanent magnet
520: Bracket 530: Bolt
600: cylinder part 610: cylinder body
611: Cylinder case 613: Cylinder rod
614: connection groove 615: elastic member
617: Fixing plug 620: Connection bracket
621: Fixing support plate 623: Connection supporting plate
624: connecting hook part 630: cylinder fixing piece

Claims (9)

A rail portion having a first guide portion, a second guide portion, and a third guide portion formed on a lower center, a front surface, and a rear surface of a mounting plate portion fixed to the upper portion of the door frame, respectively, in the longitudinal direction of the mounting plate portion;
A first slider installed to be movable along the first guide portion and fixed to the intermediate door, a second slider movably installed along the second guide portion and fixed to the front door, And a third slider to which the rear door is fixed;
A belt portion rotatably installed between a pair of pulleys provided on an upper portion of the first slider;
The second guide portion and the third guide portion, and the second slider and the third slider are fixedly coupled to the belt portion so that when the belt portion moves, the front door and the rear door are moved relative to the middle door ; And
And a cylinder connected to the first slider of the rail portion and connected to the first slider, the middle portion being movable in a direction in which the door is closed when the door is opened and closed so that the door is automatically closed,
Wherein,
A cylinder body installed in the first guide portion and driven to extend and retract the cylinder rod along the moving direction of the intermediate door; And
And a connection bracket having one side coupled to the first slider and the other side connected to the cylinder rod,
The length of the cylinder rod of the cylinder body increases when the door is opened and closed and the first slider connected to the cylinder rod is moved along the first guide portion by the connection bracket in accordance with the reduction in the door opening direction or in the closing direction To open and close the door,
Wherein the cylinder body includes:
A hollow cylinder case fixed to the first guide portion;
A cylinder rod inserted into the cylinder case and movably coupled in the longitudinal direction of the cylinder case; And
An elastic member installed inside the cylinder case so as to be connected to the cylinder rod and providing an elastic restoring force to the cylinder rod so that the cylinder rod moves in a direction to be inserted into the cylinder case when an external force is removed from the cylinder rod; / RTI >
Wherein the cylinder rod has a connecting groove formed in the outer circumferential surface of the rod end, and the connecting bracket is formed with a connecting ring to be inserted into the connecting groove.
The method according to claim 1,
Wherein the cylinder portion includes a spring cylinder that slowly closes the door while absorbing impact by a buffering action due to elasticity at a point where the front door is closed to the door frame.
delete The method according to claim 1,
Wherein,
When the door is opened, the length of the cylinder rod is increased, and the first slider connected to the cylinder rod moves along the first guide portion, thereby moving the middle door in the door opening direction,
When the door is closed, the length of the cylinder rod is reduced by the resilient restoring force of the spring, so that the first slider connected to the cylinder rod moves along the first guide portion to move the middle door in the door closing direction so that the door is closed Wherein the first and second sliding doors are interlocked with each other.
delete delete The method according to claim 1,
The connection bracket
A fixed support plate fixedly coupled to the plate surface of the first slider; And
And a connection support plate extending perpendicularly to the fixed support plate and having the connection loop formed on one side thereof.
The method according to claim 1,
A moving guide groove is formed along the first guide portion on a lower surface of the mounting plate portion corresponding to the first guide portion, a pair of fixing pieces are inserted and coupled to the moving guide groove, And is fastened to the rail part by bolts,
Wherein at least one of the pair of fixing pieces is movably installed along the movement guide groove so that the interval of the fixing pieces can be adjusted to correspond to the length of the cylinder case.
The method according to claim 1,
Wherein the rear door is detachably fixed to the rail by a magnetic force of a magnet portion provided on the third guide portion.

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