CN112459666A

CN112459666A - Semi-automatic three-linkage door using gas spring and movable pulley

Info

Publication number: CN112459666A
Application number: CN201911272304.2A
Authority: CN
Inventors: 金重三
Original assignee: Sanxing Precision Co ltd
Current assignee: Sanxing Precision Co ltd
Priority date: 2019-09-06
Filing date: 2019-12-12
Publication date: 2021-03-09
Also published as: KR102067703B1

Abstract

Utilize three linkage doors of semi-automatic formula of air spring and movable pulley, include: a 1 st door (D1), a 2 nd door (D2), and a 3 rd door (D3); an upper frame (40) including a 1 st space portion (40a), a 2 nd space portion (40b), and a 3 rd space portion (40 c); a door driving part (10) which is accommodated in any one of the space parts of the upper frame (40) and slides the door; a sliding member (20) connected to a door driving unit (10) by a cable (W) and sliding inside a space of an upper frame (40), a lower portion of the sliding member being attached to an upper portion of the door, the door driving unit (10) including: a flat plate-shaped fixed plate (11) which is provided with a plurality of fixed pulleys and is vertically arranged; a flat plate-shaped moving plate (12) which is provided with a plurality of movable pulleys, is arranged at a certain distance from the fixed plate (11), and slides in the frame (40); and a gas spring (13) connecting the fixed plate (11) and the moving plate (12) to each other.

Description

Semi-automatic three-linkage door using gas spring and movable pulley

Technical Field

The present invention relates to a semi-automatic type triple-link door using a gas spring and a movable pulley, and more particularly, to a semi-automatic type triple-link door using a gas spring and a movable pulley as follows: the door is automatically closed after being manually opened, and the door can be slid with a small force, so that a pinching accident can be prevented when the door is opened.

Background

In general, a sliding triple-link door is a door that is composed of three doors, and when one of the doors is pushed in a horizontal direction, the doors connected thereto slide together to open and close.

Such a sliding type triple-acting door (hereinafter, simply referred to as a 'triple-acting door') is configured such that rollers provided at upper portions of the respective doors move in a horizontal direction along guide rails provided at a door frame.

The three-link door has an advantage of being suitable for installation in a wide space, although having a complicated structure as compared with a single door.

However, the above-described manual triple-link door requires a larger force to open and close the door than a sliding door type door that rotates around a hinge point.

Thus, it is difficult for the old and the weak or the child to manually open and close the triple-linked door.

In addition, if an excessive force is applied when the door is manually opened and closed, an accident occurs in which a hand is pinched by the door frame.

In order to solve the above-mentioned problem of the manual triple-link door, a triple-link door having an automatic structure has been developed.

The automatic triple-acting door includes a deceleration motor and automatically opens and closes the door by a button pressing operation of a user or a detection of a sensor.

Fig. 1 shows an example of such an automatic triple-link door.

As shown in fig. 1, the conventional automatic triple-interlocking door is composed of a 1 st door D1, a 2 nd door D2, and a 3 rd door D3.

Further, a pair of timing pulleys 100 are provided on the upper portion of the door, and a timing belt 110 is wound around the pair of timing pulleys 100.

The timing belt 110 is rotated in the forward and reverse directions by a drive pulley 120 rotated in the forward and reverse directions by a reduction motor (not shown).

The timing belt 110 is connected to the upper portion of the 1 st door D1 by a pair of fixing members 130 provided at the upper portion of the 1 st door D1.

When the driving pulley 120 is rotated in the forward or reverse direction in the door driving device having the above-described structure, the timing belt 110 moves in the left-right direction, and the 1 st door D1 slides in the left-right direction.

That is, as shown in fig. 1, when the 1 st door D1 moves to the right to some extent, the 2 nd door D2 connected to the 1 st door D1 by a connection member (not shown) is pulled and moved to the right.

When the 1 st door D1 is completely moved to the right, as shown in the lower view of fig. 1, the 2 nd door D2 is positioned in front of the 3 rd door D3, and the 1 st door D3 is positioned in front of the 2 nd door D2.

When the door is closed in this state, the 1 st door D1 moves to the left side and moves to the 2 nd door D2.

In the above-described triple interlocking door, the 3 rd door D3 does not move, and only the 1 st door D1 and the 2 nd door D2 slide to open and close the doors.

In the automatic triple-linked door, the door is automatically opened and closed by a button operation of a user or a detection of a sensor, and thus, the door can be easily used by the old and the weak or children.

However, the automatic triple-link door requires a power source, and the door driving device is large in size, so that it is not easy to install.

Further, since the reduction motor and the sensor need to be provided, the cost is high, the possibility of failure is high, and a large amount of maintenance cost is required.

Documents of the prior art

Patent document

KR10-1738897B1 of Korean patent document 1

KR10-1630300B1 in Korea of patent document 2

KR10-2017-0005974A of Korea patent document 3

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made to solve the above-described problems of the conventional art, and an object of the present invention is to enable opening and closing of a triple-link door with a small force without using a separate power.

Another object of the present invention is to enable the old and the weak or the child to easily open and close the triple-linked door as well.

It is still another object of the present invention to prevent a pinching accident from occurring when opening and closing a door.

It is still another object of the present invention to simplify the structure and reduce the size, manufacturing costs and maintenance costs, as compared to the automatic triple-link door.

It is yet another object of the present invention to be widely used regardless of the width of the door.

Means for solving the problems

In order to achieve the above object, the present invention provides a semi-automatic triple-link door which is installed inside a building to be opened and closed by a sliding door, the triple-link door comprising: the 1 st door, the 2 nd door and the 3 rd door; an upper frame including a 1 st space portion, a 2 nd space portion, and a 3 rd space portion; a door driving part which is accommodated in any one of the space parts of the upper frame and slides the door; a sliding member connected to the door driving unit by a cable to perform a sliding motion in the space of the upper frame, the sliding member having a lower portion assembled to an upper portion of the door, the door driving unit including: a flat plate-shaped fixed plate which is provided with a plurality of fixed pulleys and is vertically arranged; a flat plate-shaped moving plate which is provided with a plurality of movable pulleys, is arranged at a certain distance from the fixed plate, and slides in the frame; and a gas spring for connecting the fixed plate and the moving plate, wherein the fixed plate has a 1 st fixed pulley, a 2 nd fixed pulley, and a 3 rd fixed pulley on one surface thereof, the moving plate has a 1 st movable pulley, a 2 nd movable pulley, and a 3 rd movable pulley on one surface thereof, the moving plate has a 1 st transfer wheel, a 2 nd transfer wheel, a 3 rd transfer wheel, and a 4 th transfer wheel on the other surface thereof, the 2 nd transfer wheel and the 4 th transfer wheel slide along an upper guide rail of the moving plate provided on the frame, and the 1 st transfer wheel and the 3 rd transfer wheel slide along a lower guide rail of the moving plate provided on the frame.

Further, a moving plate upper guide and a moving plate lower guide are provided above the 1 st space and the 3 rd space of the upper frame, a slide member upper guide and a lower guide are provided below the 1 st space and the 3 rd space of the upper frame, and a roller upper guide and a roller lower guide are provided above the 2 nd space located at the center of the upper frame.

Further, the apparatus includes: a connecting member for connecting upper portions of the 1 st door and the 3 rd door, the connecting member including: the 1 st wheel and the 2 nd wheel are arranged at two ends; a cable wound in a loop around the 1 st and 2 nd wheels; a 1 st link bracket fixed to one side of the cable, connected to a sliding member of a 1 st door, and moved in a horizontal direction together with the cable in accordance with movement of the door; and a 2 nd connecting bracket fixed to the other side of the cable, connected to the sliding member of the 3 rd door, and moved in a horizontal direction together with the cable as the door moves.

Further, lower connection brackets for connecting to the lower portion of the 2 nd door are provided at one end portions of the lower portions of the 1 st door and the 3 rd door, respectively.

In addition, the lower connection bracket includes: a vertical bracket vertically provided to side surfaces of the 1 st and 3 rd doors to be coupled by a bolt; a horizontal bracket horizontally arranged on the lower surfaces of the 1 st door and the 3 rd door; and a guide roller provided on the horizontal bracket.

The lower connecting brackets assembled to the end portions of the 1 st door and the 3 rd door are assembled in opposite directions to each other.

Further, the lower end of the 2 nd door is provided with a guide groove for sliding the guide rollers assembled to the 1 st door and the 3 rd door, respectively.

One end of the cable is fixed by a cable fixing part provided on the fixed plate, and is wound around the 1 st movable pulley of the moving plate, the 1 st fixed pulley of the fixed plate, the 3 rd movable pulley and the 2 nd movable pulley of the moving plate, and the 2 nd fixed pulley and the 3 rd fixed pulley of the fixed plate in this order, and then the other end is fixed to the upper part of the sliding member.

Further, the gas spring is contracted by movement of a sliding member assembled to an upper portion of the door by fixing one end thereof to the fixed plate and fixing the other end thereof to the moving plate, and when the external force is released, the gas spring is expanded again to an original state to push the moving plate open.

Further, the sliding member includes: a plurality of sliding rollers sliding along a lower portion of an inner surface of the upper frame; a roller fixing portion for fixing the slide roller; and a plate-shaped rotating member which is rotatably assembled to a lower portion of the roller fixing portion in a horizontal direction, and the sliding member is assembled to a door connecting member provided to an upper portion of the door.

Further, bolt receiving grooves for receiving fixing bolts of the door connecting member are provided at both ends of the rotating member, respectively, and the bolt receiving grooves are formed in a U shape with one side opened.

Further, bolt receiving grooves provided at both ends of the rotating member are formed in opposite directions to each other.

In addition, still include: a door holding member for temporarily fixing an upper portion of the 1 st door when the 1 st door is completely opened, the door holding member comprising: a frame bracket fixed to an end of the upper frame; a fixing member assembled to the frame bracket; a door bracket provided at one end of an upper portion of the door; and a clamping component assembled to the door bracket.

Further, the fixing member includes: a pair of balls provided at a predetermined interval; a spring for elastically supporting the ball; a support bolt for supporting the spring, wherein the sandwiching member includes: a recessed portion for mounting the pair of balls; and a convex part formed at an end of the concave part and fixed to a fixed member after passing through the ball.

Effects of the invention

According to the present invention, the door is driven by applying the principle of the gas spring and the movable pulley, so that the door is automatically closed after being manually opened.

Further, since the force required to open the door is greatly reduced by the plurality of movable pulleys, the door can be easily opened by the elderly, the infirm, or a child.

In addition, even when the number of the doors is three or more, the doors can be opened without taking much force.

In addition, since the opening and closing of the door is driven by the force of the gas spring, the user is not injured even if the user is caught by the door.

In addition, since the door driving unit is completely accommodated in the upper frame, the door driving unit is reduced in size and simplified in structure.

In addition, since the reduction motor or the sensor is not required, the manufacturing cost can be reduced.

In addition, a gas spring having a simple structure is used, thereby reducing the occurrence of malfunctions and saving maintenance costs.

In addition, even when the width of the door is changed, the door driving device can be widely used.

Drawings

Fig. 1 is a front view schematically showing an automatic triple-link door according to the related art.

Fig. 2 is a schematic front view of the semi-automatic triple-link door of the present invention.

Fig. 3 is a front view illustrating a process of opening a door among the semi-automatic type triple-linked doors of the present invention.

Fig. 4 is a perspective view illustrating a door driving part in the semi-automatic type triple-link door of the present invention.

Fig. 5 is a perspective view illustrating a rear surface of a door driving part in the semi-automatic triple-link door of the present invention.

Fig. 6 is a perspective view illustrating a coupling relationship of an upper frame and a door driving part in the semi-automatic triple-link door of the present invention.

Fig. 7 is a side sectional view of the semi-automatic triple-link door of the present invention.

Fig. 8 is a perspective view showing a moving state of the sliding member when the semi-automatic triple-linked door of the present invention is opened.

Fig. 9 is a bottom view illustrating a process of opening a door among the semiautomatic type triple-linkage doors of the present invention.

Fig. 10 is a plan view of a connecting member in the semi-automatic type triple-link door of the present invention.

Fig. 11 is a side view showing a lower assembled state of the semiautomatic type triple-link door of the present invention.

Fig. 12 is a perspective view illustrating a lower connection bracket of the semi-automatic triple-link door of the present invention.

Fig. 13 is a perspective view illustrating a sliding part of the semi-automatic triple-link door of the present invention.

Fig. 14 is a perspective view showing a coupling relationship of holding members in the semi-automatic triple-link door of the present invention.

Fig. 15 is a sectional view showing a coupling relationship of the door holding member in the semi-automatic type triple-link door of the present invention.

(symbol description)

10: the door drive section 11: fixing plate

12: moving plate 13: gas spring Gasspring

20: sliding (Sliding) member 21: sliding Roller (Sliding Roller)

22: roller fixing section 22 a: cable (Wire) fixing bolt

23: rotating member 23 a: bolt accommodating groove

24: door connecting member 24 a: fixing bolt

30: door holding member 31: frame support (Frame buffer)

32: fixing member 32 a: ball (Ball)

32 b: spring (Spring) 32 c: bolt Hole (Bolt Hole)

33: door Bracket (Door buffer) 34: clip-in component

34 a: concave portion 34 b: raised part

40: upper Frame (Frame) 40 a: 1 st space part

40 b: the 2 nd space portion 40 c: space part No. 3

41: moving plate upper Guide (Guide Rail)

42: moving plate lower guide 43: upper guide rail of sliding component

44: sliding member lower guide rail 45: roller upper guide rail

46: roller lower guide 47: rivet (Rivet)

50: lower connecting bracket 51: vertical support

51 a: bolt coupling hole 52: horizontal support

53: guide Roller (Guide Roller) 54: guide groove

C: connecting member C1: no. 1 connecting bracket

C2: the 2 nd connecting bracket D1: no. 1 door

D2: door 2D 3: no. 3 door

R1: 1 st fixed sheave R2: no. 2 fixed pulley

R3: fixed pulley 3, R4: no. 1 movable pulley

R5: 2 nd movable pulley R6: no. 3 movable pulley

R7: 1 st transfer Wheel (Wheel) R8: 2 nd transfer wheel

R9: 3 rd transfer wheel R10: 4 th transfer wheel

R11: 1 st round R12: wheel 2

W: cable (Wire)

100: timing Pulley (Timing Pulley) 110: synchronous Belt (Timing Belt)

120: the drive pulley 130: fixing member

Detailed Description

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 2 to 6, the semi-automatic type triple-link door using a gas spring and a movable pulley of the present invention includes: 1 st, 2 nd and 3 rd doors D1, D2, D3; an upper frame 40 including a 1 st space portion 40a, a 2 nd space portion 40b, and a 3 rd space portion 40 c; a door driving part 10 which is accommodated in any one of the space parts of the upper frame 40 and slides the door; and a sliding member 20 connected to the door driving unit 10 by a cable W and sliding in the space of the upper frame 40, and having a lower portion assembled to an upper portion of the door.

Here, as shown in fig. 4 and 5, the door driving unit 10 includes: a flat plate-like fixed plate 11 provided with a plurality of fixed pulleys and arranged vertically; a flat plate-shaped moving plate 12 including a plurality of movable pulleys, provided at a predetermined distance from the fixed plate 11, and sliding inside the frame 40; and a gas spring 13 connecting the fixed plate 11 and the moving plate 12 to each other.

The gas spring 13 is characterized in that it is returned to its original position slowly when the external force is released after the Rod (Rod) is retracted.

Thus, when the external force is released after the gas spring 13 is contracted by manually opening the door, the door is automatically closed by the restoring force of the gas spring 13.

Since the urging force of the gas spring 13 is small and the restoring speed is slow, the door stops if a hand or a body is caught when the door is closed. Thus, there is no fear that the user may be injured when opening and closing the door.

Further, since the gas spring 13 is small in size, the size of the door driving portion can be reduced, and the size of the upper frame 40 that houses the door driving portion can also be reduced.

Further, compared to an automatic sliding door driven by a power supply, the automatic sliding door has a low possibility of failure and is easy to maintain.

That is, as shown in fig. 6 and 7, the upper frame 40 of the present invention is composed of a 1 st space portion 40a, a 2 nd space portion 40b, and a 3 rd space portion 40c, and the 1 st space portion 40a and the 3 rd space portion 40c are formed to have the same cross section.

Thus, the door driving unit 10 may be provided in either one of the 1 st and 3

rd space portions

40a and 40 c.

As shown in fig. 6 and 7, the upper frame 40 includes a moving plate upper rail 41 and a moving plate lower rail 42 above the 1 st space 40a and the 3 rd space 40 c.

The upper frame 40 is provided with a slide member upper guide rail 43 and a slide member lower guide rail 44 at the lower portions of the 1 st space portion 40a and the 3 rd space portion 40 c.

Further, a roller upper guide 45 and a roller lower guide 46 are provided above the 2 nd space 40b located at the center of the upper frame 40, and the slide member 20 slides.

That is, as shown in fig. 7, the door driving unit 10 is assembled to the upper portion of the one side space portion of the upper frame 40, and the sliding member 20 connected to the door driving unit 10 is assembled to the lower portion.

In the other side space portion, only the slide member 20 is assembled in the lower portion.

The slide member 20 is assembled to the upper portion of the central 2 nd space portion 40b, and a connecting member C described later is provided to the lower portion.

As shown in fig. 9, the present invention further includes a connecting member C connecting the upper portions of the 1 st door D1 and the 3 rd door D3.

The above-mentioned connection member C is provided at the lower portion of the 2 nd space part 40b at the center, whereby the 2 nd door D2 and the 1 st door D1 and the 3 rd door D3 are connected to each other.

As shown in fig. 10, the connecting member C includes: the 1 st wheel R11 and the 2 nd wheel R12 are arranged at the two ends; a wire W annularly wound around the 1 st and 2 nd wheels R11 and R12; a 1 st link bracket C1 fixed to one side of the cable W, connected to the sliding member 20 of the 1 st door D1, and moved in a horizontal direction together with the cable as the door moves; and a 2 nd connecting bracket C2 fixed to the other side of the cable W, connected to the sliding member 20 of the 3 rd door D3, and moved in a horizontal direction together with the cable according to the movement of the door.

As shown in fig. 7 and 9, when the 1 st door D1 horizontally moves by the above-described structure, the 2 nd door D2 connected by the 1 st connecting member C1 also moves together, and when the 1 st door D1 is completely opened, the three doors overlap.

As shown in fig. 11, the present invention includes a lower connection bracket 50 connected to a lower portion of the 2 nd door D2 at one end of the lower portions of the 1 st door D1 and the 3 rd door D3, respectively.

Here, as shown in fig. 12, the upper connecting bracket 50 includes: a vertical bracket 51 vertically provided to side surfaces of the 1 st and 3 rd doors D1 and D3 and coupled by bolts; a horizontal bracket 52 horizontally provided on the lower surfaces of the 1 st door D1 and the 3 rd door D3; and a guide roller 53 provided on the horizontal bracket 52.

As shown in fig. 12, the lower connecting brackets 50 assembled to the end portions of the 1 st door D1 and the 3 rd door D3 are assembled in opposite directions.

As shown in fig. 11, guide grooves 54 are provided at the lower ends of the 2 nd door D2, respectively, so that the guide rollers 53 assembled to the 1 st door D1 and the 3 rd door D3 slide, respectively.

With the above-described structure, when the 1 st door D1 is slid, the guide roller 53 connected to the lower portion of the 1 st door D1 slides along the guide groove 54 formed in the lower portion of the 2 nd door D2.

In addition, when the 2 nd door D2 slides together with the 1 st door D1, the guide roller 53 connected with the 3 rd door D3 is guided to the guide groove 54 formed at the 2 nd door D2.

Accordingly, when the 1 st door D1 and the 2 nd door D2 slide, the lower portion of the doors does not shake and can smoothly move.

As shown in fig. 5, a fixing plate 11b is provided at one end of the fixing plate 11 constituting the door driving unit 10 and fixed to an end of the upper frame 40.

When the door is opened and closed, the fixed plate 11 is kept fixed without moving in the horizontal direction.

The moving plate 12 slides in the upper portion of the upper frame 40 by expansion and contraction of the gas spring 13

In addition, the sliding member 20 is connected to an upper portion of the door to perform a sliding motion at a lower portion of the upper frame 40.

As shown in fig. 2, 2 sliding members 20 according to the present invention are provided on the upper portion of the 1 st door D1, and only one (left side in fig. 2) of the sliding members is connected to the door driving unit 10 via a cable W.

That is, the slide member 20 on the right side in fig. 2 is not connected to the cable W and only performs the sliding motion on the lower portion of the upper frame 40.

In addition, 2 sliding members 20 are provided on the upper portions of the 2 nd door D2 and the 3 rd door D3, respectively, so that the upper frame 40 slides therein.

As shown in fig. 4, the door driving unit 10 includes a 1 st fixed pulley R1, a 2 nd fixed pulley R2, and a 3 rd fixed pulley R3 on one surface of the fixed plate 11, and a 1 st movable pulley R4, a 2 nd movable pulley R5, and a 3 rd movable pulley R6 on one surface of the moving plate 12.

As shown in fig. 5, a 1 st transport wheel R7, a 2 nd transport wheel R8, a 3 rd transport wheel R9, and a 4 th transport wheel R10 are provided on the other surface of the moving plate 12.

The fixed plate 11 includes a plurality of fixed pulleys R1, R2, and R3 on only one surface thereof, because the fixed plate 11 is held in a fixed state inside the frame 40.

In contrast, as shown in fig. 5, the moving plate 12 includes a plurality of moving pulleys R4, R5, and R6 connected to the fixed pulleys of the fixed plate 11 via cables W on one surface thereof, and a plurality of transmission wheels R7, R8, R9, and R10 on the other surface thereof.

The plurality of transport wheels R7, R8, R9, and R10 provided on the other surface of the moving plate 12 guide the moving plate 12 when the moving plate moves inside the upper frame 40 without winding a cable.

Here, as shown in fig. 5, among the transfer wheels provided on the other surface of the moving plate 12, the 2 nd transfer wheel R8 and the 4 th transfer wheel R10 are formed slightly above so as to slide along the moving plate upper rail 41 provided on the upper frame 40, and the 1 st transfer wheel R7 and the 3 rd transfer wheel R9 are formed slightly below so as to slide along the moving plate lower rail 42 provided on the upper frame 40.

This is to stably and smoothly move the moving plate 12 inside the upper frame 40.

As shown in fig. 4, one end of the cable W connecting the door driving unit 10 and the sliding member 20 is fixed by the cable fixing unit 11a provided in the fixed plate 11, and is wound around the 1 st movable pulley R4 of the moving plate 12, the 1 st fixed pulley R1 of the fixed plate 11, the 3 rd movable pulleys R6 and the 2 nd movable pulley R5 of the moving plate 12, the 2 nd fixed pulley R2 and the 3 rd fixed pulley R3 of the fixed plate 11, and then the other end is fixed to the upper portion of the sliding member 20.

According to the wiring method using the movable pulley described above, since the force for contracting the gas spring 13 is shared by the 4 cables, the force required for contracting the gas spring 13 can be reduced to 1/4.

In the drawing, 2 movable pulleys sharing the force for contracting the gas spring 13 are illustrated, but not limited thereto. The number of the above-mentioned movable pulleys can be further increased according to the size of the door.

For example, when three fixed pulleys are provided on the fixed plate and three movable pulleys are provided on the moving plate, the force required to contract the gas spring 6 can be reduced to 1/6.

The wire W is preferably made of a stainless steel material, but is not limited thereto.

Instead of the cable W, the door driving unit 10 and the sliding member 20 may be connected by a timing belt and a pulley.

As shown in fig. 13, the slide member 20 that slides inside the upper frame 40 includes: a plurality of sliding rollers 21 sliding along a lower portion of an inner surface of the frame 40; a roller fixing portion 22 for fixing the slide roller 21; and a plate-shaped rotating member 23 which is rotatably attached to a lower portion of the roller fixing portion 22 in a horizontal direction.

As shown in fig. 2, the upper portion of the sliding member 20 is connected to the door driving unit 10 by a cable W, and the lower portion is connected to the upper portion of the 1 st door D1 to be slid on the lower portion of the upper frame 40.

Further, bolt receiving grooves 23a for receiving fixing bolts 24a of the door connecting member 24 are provided at both ends of the rotating member 23 assembled to the lower portion of the slide member 20.

The bolt receiving grooves 23a are preferably formed in a U shape with one side open, and the bolt receiving grooves 23a provided at both ends of the rotating member 23 are formed in opposite directions to each other.

According to the above configuration, the respective doors can be easily assembled with the slide member 20, and the doors can be stably and smoothly slid.

In addition, even when the width of the door is changed, the door driving unit 10 can be widely used.

The present invention further includes a door holding member 30 for temporarily fixing an upper portion of the 1 st door D1 when the door is completely opened.

As shown in fig. 14, the door holding member 30 includes: a frame bracket 31 fixed to an end of the upper frame 40; a fixing member 32 assembled to the frame bracket 31; a door bracket 33 provided at one end of an upper portion of the 1 st door D1; and a clamping member 34 assembled to the door holder 33.

The fixing member 32 is fixed to an end of the upper frame 40, and the sandwiching member 34 is provided at one side of the upper portion of the door to be coupled to each other.

Here, as shown in fig. 14 and 15, the fixing member 32 includes: a pair of balls 32a provided at a predetermined interval; a spring 32b for elastically supporting the ball 32 a; a support bolt for supporting the spring; and bolt holes 32c for assembling to the frame bracket 33.

Further, the sandwiching member 34 includes: a concave portion 34a to which the pair of balls 32a are fitted; and a convex portion 34b formed at an end of the concave portion 34a and fixed to the fixing member 32 after passing through the ball 32 a.

And, the sandwiching member 34 is assembled to

A door bracket 33 having a shape of a letter, wherein the door bracket 33 is assembled to an upper portion of the door through a bolt hole 33 b.

With the above configuration, the 1 st door D1 is completely opened, and the boss 34a of the sandwiching member 34 is fixed to the fixing member 32 beyond the elastic force of the ball 32 a.

Thus, the fully opened door can continue to maintain its state as long as no external force is applied.

Next, the operation of the semiautomatic triple-link door according to the present invention will be described with reference to fig. 3 and 8.

When the user pushes the door handle to the right side, as shown in fig. 3 (b), the sliding member 20 connected to the upper portion of the 1 st door D1 slides to the right side, and the moving plate 12 retracts the gas spring 13 to move to the left side.

At this time, as shown in fig. 8 (b), the 2 nd door D2 is moved by the 2 nd slide member 20 provided on the upper portion of the 2 nd door D2 moving to the right side together.

According to the present invention, the force of the contracting gas spring 13 is reduced to 1/4 by 2 movable pulleys, and thus the door can be opened with less force.

When the door is opened by a predetermined width and passes through the door, the gas spring starts to extend to its original state by the restoring force of the contracted gas spring.

Thereby, the moving plate 12 is pushed to the right side, and the door is automatically closed by moving to the left side.

When the door needs to be opened for a certain time, the door is completely opened and the sandwiching member 34 provided at the upper portion of the right side is fixed to the fixing member 32 of the upper frame 40. Thus, as shown in fig. 3 (c) and 8 (c), the three doors are overlapped and kept in the original opened state.

When the door is closed in this state, the 1 st door D1 is pushed to the left, whereby the door pinching member 34 is disengaged from the fixing member 32 of the upper frame 40.

Thus, the gas spring 13 is expanded to the original state by the restoring force to start pushing the moving plate 12 to the right side. Thereby, the door is automatically closed by moving to the left.

The manual three-linkage door has the defect that the door needs large force when being closed, so that the door is inconvenient for the old, the weak or children to use.

Further, the automatic sliding door having the reduction motor has a disadvantage that the structure is complicated, the installation is difficult, and the price is expensive.

In addition, in the case of the automatic triple-linked door, since the opening and closing of the door is forcibly performed by the force of the motor, a pinching accident may occur when the door is opened and closed.

In order to solve such a problem, a shock absorber or a sensor for preventing shock may be provided, but in this case, the price is increased.

In contrast, the present invention uses an inexpensive and small-sized gas spring, and thus can reduce the manufacturing cost and the size of the door driving part.

In particular, the present invention utilizes both the gas spring and the movable sheave, and thus disperses the force of contracting the gas spring, thereby being able to contract the gas spring with less force.

Thus, the old and the weak or the child can easily open the sliding door.

In addition, since the entire door driving unit is built in the upper frame, the installation work is simple.

In addition, the restoring force of the gas spring is not large, so that even if hands or bodies are clamped on the door frame when the door is closed, the hands or the bodies are not injured.

The technical idea of the present invention has been described and illustrated above by way of example, but the present invention is not limited to the structure and operation thereof described above. It will be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the technical spirit described in the claims. Accordingly, all such suitable variations and modifications and equivalents are intended to be included within the scope of the present invention.

For example, the present invention is applicable not only to a triple-link door but also to doors of 4 or more.

Claims

1. A semi-automatic triple-linkage door using a gas spring and a movable pulley is provided in a building to be opened and closed in a sliding door manner,

the above-mentioned three linkage doors of semi-automatic formula that utilize gas spring and movable pulley's characterized in that, it includes:

a 1 st door (D1), a 2 nd door (D2), and a 3 rd door (D3);

an upper frame (40) including a 1 st space portion (40a), a 2 nd space portion (40b), and a 3 rd space portion (40 c);

a door driving part (10) which is accommodated in any one of the space parts of the upper frame (40) and slides the door; and

a sliding member (20) which is connected with the door driving part (10) through a cable (W) to perform sliding movement in the space part of the upper frame (40), and the lower part of the sliding member is assembled on the upper part of the door,

the door drive unit (10) includes:

a flat plate-shaped fixed plate (11) which is provided with a plurality of fixed pulleys and is vertically arranged;

a flat plate-shaped moving plate (12) which is provided with a plurality of movable pulleys, is arranged at a certain distance from the fixed plate (11), and slides in the frame (40); and

a gas spring (13) connecting the fixed plate (11) and the moving plate (12) to each other,

the door driving part (10) is provided with a 1 st fixed pulley (R1), a 2 nd fixed pulley (R2) and a 3 rd fixed pulley (R3) on one surface of a fixed plate (11),

a first movable pulley (R4), a second movable pulley (R5) and a third movable pulley (R6) are provided on one surface of a moving plate (12) of the door driving unit (10),

the other surface of the moving plate (12) is provided with a 1 st transport wheel (R7), a 2 nd transport wheel (R8), a 3 rd transport wheel (R9) and a 4 th transport wheel (R10),

the 2 nd transfer wheel (R8) and the 4 th transfer wheel (R10) among the transfer wheels provided on the other surface of the moving plate (12) slide along an upper guide rail (41) of the moving plate provided on the upper portion of the frame (40),

the 1 st transport wheel (R7) and the 3 rd transport wheel (R9) slide along a lower guide rail (42) of a moving plate provided at the upper part of the frame (40).

2. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 1,

a moving plate upper guide rail (41) and a moving plate lower guide rail (42) are provided above the 1 st space part (40a) and the 3 rd space part (40c) of the upper frame (40),

a sliding member upper guide rail (43) and a lower guide rail (44) are provided below the 1 st space part (40a) and the 3 rd space part (40c) of the upper frame (40),

a roller upper guide rail (45) and a roller lower guide rail (46) are provided above a 2 nd space part (40b) located at the center of the upper frame (40).

3. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 1,

the semi-automatic triple-linkage door further comprises a connecting member (C) for connecting the upper parts of the 1 st door (D1) and the 3 rd door (D3),

the connecting member (C) includes:

a 1 st wheel (R11) and a 2 nd wheel (R12) provided at both ends of the connecting member (C);

a cable (W) wound in a ring shape around the 1 st wheel (R11) and the 2 nd wheel (R12);

a 1 st connecting bracket (C1) fixed on one side of the cable (W), connected with the sliding component (20) of the 1 st door (D1), and moving in the horizontal direction together with the cable along with the movement of the door; and

and a 2 nd connecting bracket (C2) fixed to the other side of the cable (W) and connected to the sliding member (20) of the 3 rd door (D3), and moving in a horizontal direction together with the cable according to the movement of the door.

4. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 1,

lower connection brackets (50) for connecting to the lower part of the 2 nd door (D2) are provided at one end parts of the lower parts of the 1 st door (D1) and the 3 rd door (D3), respectively.

5. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 4,

the lower connecting bracket (50) includes:

a vertical bracket (51) vertically provided to the side surfaces of the 1 st door (D1) and the 3 rd door (D3) to be coupled by a bolt;

a horizontal bracket (52) horizontally provided on the lower surfaces of the 1 st door (D1) and the 3 rd door (D3); and

and a guide roller (53) provided on the horizontal bracket (52).

6. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 4,

the lower connecting brackets (50) assembled to the ends of the 1 st door (D1) and the 3 rd door (D3) are assembled in opposite directions.

7. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 4,

a guide groove (54) is provided at the lower end of the 2 nd door (D2) so that the guide rollers (530) assembled to the 1 st door (D1) and the 3 rd door (D3) slide.

8. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 1,

one end of the cable (W) is fixed by a cable fixing part (11a) arranged on the fixing plate (11), and is wound on a 1 st movable pulley (R4) of the moving plate (12), a 1 st fixed pulley (R1) of the fixing plate (11), a 3 rd movable pulley (R6) and a 2 nd movable pulley (R5) of the moving plate (12), a 2 nd fixed pulley (R2) and a 3 rd fixed pulley (R3) of the fixing plate (11) in sequence, and then the other end is fixed on the upper part of the sliding component (20).

9. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 1,

one end of the gas spring (13) is fixed to the fixing plate (11) and the other end is fixed to the moving plate (12), thereby being contracted by the movement of a sliding member (20) assembled to the upper portion of the door,

when the external force is released, the movable plate (12) is extended again to the original state and pushed open.

10. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 1,

the slide member (20) includes:

a plurality of sliding rollers (21) sliding along a lower portion of an inner surface of the upper frame (40);

a roller fixing section (22) that fixes the slide roller (21); and

a plate-shaped rotating member (23) which is assembled to the lower part of the roller fixing part (22) in a manner of rotating in the horizontal direction,

the sliding member (20) is assembled to a door connecting member (24) provided at an upper portion of the door.

11. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 10,

bolt receiving grooves (23a) for receiving fixing bolts (24a) of the door connecting member (24) are respectively provided at both ends of the rotating member (23),

the bolt receiving groove (23a) is formed in a U shape and one side is opened.

12. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 11,

bolt receiving grooves (23a) provided at both ends of the rotating member (23) are formed in opposite directions to each other.

13. The semi-automatic triple-linked door using a gas spring and a movable pulley according to claim 1, further comprising a door holding member (30), the door holding member (30) temporarily fixing an upper portion of the 1 st door (D1) when the 1 st door (D1) is completely opened,

the door holding member (30) includes:

a frame bracket (31) fixed to an end of the upper frame (40);

a fixing member (32) assembled to the frame bracket (31);

a door bracket (33) which is arranged at one end of the upper part of the 1 st door (D1); and

and a clamping component (34) assembled to the door bracket (33).

14. The semi-automatic triple-linkage door using a gas spring and a movable pulley according to claim 13,

the fixing member (32) includes:

a pair of balls (32a) provided at a predetermined interval;

a spring (32b) that elastically supports the ball (32 a); and

a support bolt for supporting the spring (32b),

the sandwiching member (34) includes:

a recessed part (34a) for mounting the pair of balls (32 a); and

and a protrusion (34b) formed at an end of the recess (34a) and fixed to the fixing member (32) after passing through the ball (32 a).