KR20230069736A - Semi-automatic apparatus for controlling of adjusting velocity of door - Google Patents

Abstract

The present invention relates to a semi-automatic apparatus (100) for a door for controlling the closing speed, comprising: a mainframe (100) having a rail groove formed inside; a fixed plate (120) inserted into the mainframe (110), and having a plurality of pulleys (121) formed on one side; a moving plate (130) inserted into the mainframe (110), and formed apart from the fixed plate (120) at a preset interval, and having a plurality of second pulleys (131) formed on one side; a length control unit (140) having one side connected to the fixed plate (120) and having the other side connected to the moving plate (130), and having a variable length by being compressed or restored by an external force; a wire (150) having one side connected to a door (10), and having the other side connected to the fixed plate (120) by being wound around the plurality of first pulleys (121) and the plurality of second pulleys (131); and a speed control unit (160) controlling the moving speed of the door (10). Therefore, the closing speed can be partly or wholly reduced.

Description

Semi-automatic device for controlling the closing speed of the door {SEMI-AUTOMATIC APPARATUS FOR CONTROLLING OF ADJUSTING VELOCITY OF DOOR}

The present invention relates to a semi-automatic device for a door with adjustable closing speed, and more particularly, to a technique capable of adjusting the closing speed while manually opening and closing the door automatically.

The sliding door device includes an automatic sliding door device that automatically opens or closes the sliding door using a motor and a rail, and a manual sliding door device that directly opens the sliding door by hand. The automatic type has the advantage of convenience, but has the disadvantage of requiring a lot of cost for installation, and the manual type has the disadvantage of low cost but low convenience. In this situation, interest in a semi-automatic sliding door device that can maintain as much convenience as an automatic sliding door device while lowering installation costs is emerging.

Among the prior art, Korean Patent Registration No. 10-2168537 (registered on October 15, 2020) relates to a semi-automatic door using a gas spring and a movable pulley, which simplifies the structure compared to an automatic door, reduces the size, and manufactures Techniques are disclosed that seek to reduce costs and maintenance costs. However, the prior art has a limitation in that it cannot control the change in the closing speed of the door depending on the type, weight, and installation position of the door.

A technical problem to be solved by the present invention is to provide a semi-automatic device for a closing speed control type door capable of adjusting the closing speed while automatically closing the door without power.

In addition, it is to provide a semi-automatic device for a closing speed adjustable door that can partially reduce the speed while automatically closing the door.

In addition, it is to provide a semi-automatic device for a closing speed adjustable door that can reduce the speed as a whole while automatically closing the door.

The semi-automatic device for closing speed-adjustable doors according to an embodiment of the present invention includes a body frame 100 having a rail groove formed therein, and a plurality of first pulleys inserted into the body frame 110 on one side ( 121) is formed, and inserted into the inside of the body frame 110, spaced apart from the fixing plate 120 at a predetermined interval, and a plurality of second pulleys 131 are formed on one side A moving plate 130, one side connected to the fixed plate 120 and the other side connected to the moving plate 130, and a length adjusting unit 140 having a variable length while being compressed or restored by an external force, and one side A wire 150 connected to the door 10, the other side of which is wound around the plurality of first pulleys 121 and the plurality of second pulleys 131 and connected to the fixing plate 120, and the door ( 10) includes a speed control unit 160 for adjusting the moving speed.

In addition, the speed control unit 160 moves along the inner side of the body frame 100, and a buffer unit 161 located adjacent to the moving plate 130 and one side of the buffer unit 161 The connected buffer wire 162 and the other side of the fixing plate 120 are formed in a pulley shape, and the other side of the buffer wire 162 is connected to move the first pulley 121 or the buffer unit 161 It may include an adjustment pulley 163 for adjusting.

In addition, the adjusting pulley 163 has an outer cylinder portion 163-1 on one side of which the buffer wire 152 passes through and is fixed, and is accommodated inside the outer cylinder portion 163-1, and has a gear groove 163 on the inner surface. -21) is formed in the inner cylinder portion 163-2, and is inserted into the inner cylinder portion 163-2, and gear teeth 163-31 are formed on the outer surface to form the gear groove 163-21. A gear bolt 163-3 meshed with, one side elastically supporting the outer cylinder portion 163-1, and the other side elastically supporting the gear bolt 163-3 to the gear groove 163-21. It includes a first elastic support part 163-4 for engaging the gear bolt 163-3, and when the outer cylinder 163-1 rotates while compressing the first elastic support part 163-4, the gear bolt (163-3) can be separated from the gear groove (163-21) to rotate.

In addition, the adjusting pulley 163 is accommodated inside the move bolt 163-5 coupled to the screw thread formed inside the gear bolt 163-3 and the gear bolt 163-3, and one side is Further comprising a second elastic support part 163-6 elastically supported by the first pulley 121 and elastically supported by the move bolt 163-5 at the other side, and rotating the move bolt 163-5 At this time, the second elastic support part 163-6 may contact the first pulley 121 to restrict rotation.

Accordingly, it is possible to adjust the closing speed while automatically closing the door without power.

In addition, the speed can be partially reduced while the door closes automatically.

In addition, the overall speed can be reduced while the door is automatically closed.

1 is an exemplary view illustrating a connection relationship between a door and a door frame of a semi-automatic device for a door closing speed adjustable according to an embodiment of the present invention.
2 is an exploded perspective view of a semi-automatic device for adjusting the closing speed of a door according to an embodiment of the present invention.
FIG. 3 is a detailed view of a speed control unit of the semi-automatic device for a closing speed control type door according to FIG. 2 .
FIG. 4 is a block diagram of an adjusting pulley among speed adjusting parts of the semi-automatic device for adjusting the closing speed of the door according to FIG. 2 .
5 is a cross-sectional view of the adjusting pulley according to FIG. 4;
6 is an exemplary view for explaining the connection relationship between the inner tube and the gear bolt of the adjusting pulley according to FIG. 4;
FIG. 7 is an exemplary diagram for explaining a connection relationship between a second elastic support part and a first pulley of the control pulley according to FIG. 4 .
8 is an exemplary diagram for explaining the operation principle of the semi-automatic device for adjusting the closing speed of the door according to FIG. 2 .
9 to 11 are exemplary views for explaining a configuration for fixing a wire of the semi-automatic device for a door closing speed adjustable according to FIG. 2 to the door.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The terms used are terms selected in consideration of functions in the embodiment, and the meaning of the terms may vary depending on the intention of a user or operator or a precedent. Therefore, the meaning of terms used in the embodiments to be described later, when specifically defined in the present specification, follows the definition, and when there is no specific definition, it should be interpreted as a meaning generally recognized by those skilled in the art.

1 is an exemplary view for explaining the connection relationship between a door and a door frame in a semi-automatic device for a door closing speed adjustable according to an embodiment of the present invention, and FIG. 2 is a view for a closing speed control type door according to an embodiment of the present invention. An exploded perspective view of a semi-automatic device, FIG. 3 is a detailed detailed view of a speed control unit among the semi-automatic device for a closing speed-adjustable door according to FIG. 2, and FIG. 4 is a speed of the semi-automatic device for a closing speed-adjustable door according to FIG. 2 5 is a cross-sectional view of the adjusting pulley according to FIG. 4, and FIG. 6 is an exemplary diagram for explaining the connection relationship between the inner cylinder and the gear bolt of the adjusting pulley according to FIG. 4. 7 is an exemplary view for explaining the connection relationship between the second elastic support and the first pulley of the adjusting pulley according to FIG. 4, and FIG. This is an example for doing this.

Referring to FIGS. 1 to 8 , the semi-automatic device 100 for controlling the closing speed of a door according to an embodiment of the present invention is inserted into a door frame 20 connected to the door 10 . Here, the door 10 is used as a meaning encompassing all sliding doors, casement doors, and interlocking doors. The semi-automatic device 100 is preferably formed in a size capable of moving along a rail inside the door frame 20 . In this case, the number of doors 10 may be one or more. The semi-automatic device 100 can also be used for three or more doors 10. The semi-automatic device 100 may be positioned horizontally with the top of the door 10 or positioned horizontally with the side of the door 10. In other words, the semi-automatic device 100 may be formed on the top or side of the door frame 20 . This is to reduce the space on the side of the door frame 20 by minimizing the volume. The semi-automatic device 100 is fixed to the door frame 20 with bolts, and its position can be varied.

More specifically, the semi-automatic device 100 for adjusting the closing speed of the door according to an embodiment of the present invention includes a body frame 110, a fixing plate 120, a moving plate 130, a length adjusting unit 140, and a wire 150 and a speed control unit 160.

The body frame 110 is a frame having a square cross section and accommodates a fixing plate 120, a moving plate 130, a length adjusting unit 140, a wire 150, and a speed adjusting unit 160 therein. A rail is formed inside the body frame 110 . This allows the fixed plate 120, the moving plate 130, etc. to move inward through sliding coupling. The length and size of the body frame 110 may be varied by user's design. The body frame 110 is coupled to and fixed to the door frame 20 .

In addition, a first closing cap 111 and a second closing cap 112 are inserted into both ends of the body frame 110 that are opened, respectively. The first closing cap 111 and the second closing cap 112 close both ends of the body frame 110 while forming coupling holes so that the body frame 110 can be bolted to the door frame 20 to be fixed. . The first closing cap 111 and the second closing cap 112 may be formed of a synthetic resin material or a metal material. The first closing cap 111 serves to fix the fixing plate 120 by being coupled with the fixing plate 120 .

The fixing plate 120 is inserted into one side of the body frame 110 and fixed. The fixing plate 120 may be formed of a metal material, and a plurality of through holes may be perforated. A plurality of first pulleys 121 are formed on the fixing plate 120 . In this case, a wire 150 to be described later is wound around the plurality of first pulleys 121 . The plurality of first pulleys 121 are formed so that the central axis is perpendicular to the fixing plate 120 . In other words, the first pulleys 121 are positioned horizontally with the body frame 110 .

In addition, the plurality of first pulleys 121 may be formed on one side or the other side of the fixing plate 120 . The fixing plate 120 is fixed to the door frame 20 and its position is maintained constant. In this case, the plurality of first pulleys 121 may be arranged in a zigzag shape. This is to prevent the wires 150 from interfering with each other. The wire 150 may be wound by winding one turn around the at least one first pulley 121 . This is to adjust the closing speed of the door 10 . A first guide roller 122 may be formed on the fixing plate 120 . When connecting the wire 150 to the hinged door frame 20 as shown in FIG. 10, the first guide roller 122 serves to guide the rotation support member 30 to rotate.

The moving plate 130 is positioned horizontally on one side of the body frame 110 . The moving plate 130 is formed to be spaced apart from the fixed plate 120 at a predetermined interval. The moving plate 130 may be formed of a metal material, and a plurality of through holes may be perforated. A plurality of second pulleys 131 are formed on the moving plate 130 . In this case, the plurality of second pulleys 131 are wound with a wire 150 to be described later. The plurality of second pulleys 131 are formed so that their central axes are perpendicular to the moving plate 130 . In other words, the second pulleys 131 are positioned horizontally with the body frame 110 . A plurality of second pulleys 131 may be formed on one side or the other side of the moving plate 130 . The position of the moving plate 130 is changed by a length adjusting unit 140 to be described later.

In addition, according to the number of the plurality of first pulleys 121 of the fixed plate 120 and the plurality of second pulleys 131 of the moving plate 130, the length of the wire 150 passing through them varies. In other words, the wire 150 is wound while reciprocating between the plurality of first pulleys 121 and the plurality of second pulleys 131 . The operation distance of the wire 150 according to the variable length of the length adjusting unit 140 described later is varied according to the number of lines of the reciprocating wire 150 . For example, if the number of circuits of the wire 150 is 4, the moving distance of the door 10 connected to the wire 150 may be increased four times compared to the variable length of the length adjusting unit 140 .

In addition, a second guide roller 132 may be formed on one side of the moving plate 130 . For example, the second guide roller 132 may be formed on the other side of the moving plate 130 . The second guide roller 132 may be moved by being inserted into the body frame 110 . In this case, the second guide roller 132 may move along the rail of the inner wall of the body frame 110 . The second guide roller 132 is a synthetic resin roller into which bearings are inserted, and can minimize resistance and noise and minimize power loss when the moving plate 130 moves.

One side of the length adjustment unit 140 is connected to the fixed plate 120 and the other side is connected to the moving plate 130 . For example, the length adjusting unit 140 may be implemented with an elastic spring inserted therein or a shock absorber that buffers pressure caused by an external force by hydraulic pressure. In other words, after being compressed by an external force, the length adjusting unit 140 is restored to its original position by a restoring force and the length is varied. In this case, the position of the fixed plate 120 connected to one side of the length adjusting unit 140 is not variable, but the position of the moving plate 130 is varied according to the length adjusting unit 140 . The length adjusting part 140 is compressed as the door 10 moves to be opened, and in this case, the impact is cushioned. The length adjusting unit 140 moves to automatically close the door 10 while restoring its length in a state in which the external force is released.

One side of the wire 150 is connected to the door 10 and the other side is connected to the fixing plate 120 . For example, the wire 150 may be formed of a metal material. The wire 150 is wound while passing through the plurality of first pulleys 121 of the fixed plate 120 and the plurality of second pulleys 131 of the moving plate 130 . The wire 150 compresses the space between the fixed plate 120 and the moving plate 130 according to the movement of the door 10 . In this case, the length adjustment unit 140 connected between the fixed plate 120 and the moving plate 130 is also compressed. For example, when the door 10 is opened and moved by an external force, the door 10 is moved closed again by the restoring force of the length adjusting unit 140 so that it is automatically closed.

More specifically, one side of the wire 150 is connected to the door 10 by moving from one side of the fixing plate 120 to the other side. The other side of the wire 150 is wound around the plurality of second pulleys 131 located on the moving plate 130 through the plurality of first pulleys 121 of the fixed plate 120 . Subsequently, the wire 150 is again wound around the unwound first pulley 121 among the plurality of first pulleys 121 and then again wound around the unwound second pulley 131 among the plurality of second pulleys 131 do. After that, the wire 150 is fixedly connected to one side of the fixing plate 120 . In this case, the wire 150 may be wound around at least one of the first pulleys 121 of the bogood in a state where it is wound at least one turn. This is to slow down the closing speed of the door 10 .

In addition, the wire 150 may be bent and inserted into the groove of the fixing bolt 151 connected to the door 10, and the fixing screw 152 may be coupled and fixed to the fixing bolt 151. In this case, the fixing bolt 151 and the fixing screw 152 are threaded so that the wire 150 can be brought into close contact through screw coupling. The fixing bolt 151 may be bolted to the door 10 . A straight groove or a cross groove may be formed in the fixing screw 152 so as to be rotated and fixed.

In this case, the fixing bolt 151 may also be formed on the door bracket 153. The door bracket 153 is a member of a flat plate that is bolted to one side of the door. A plurality of bolt holes 153-1 may be formed in the door bracket 153, and a plurality of buffer rollers 153-2 may be coupled to the bolt holes 153-1. The plurality of buffer rollers 153-2 are rollers that contact and guide the inside of the door frame 20. This is to allow the door 10 to slide along the inside of the door frame 20 . In this case, several bolt holes 153-1 may be drilled in order to mount the rollers in various positions according to the width or length of the door 10.

The speed controller 160 controls the moving speed of the door 10 . The speed control unit 160 may reduce the speed of a part of the section in which the door 10 is closed or the speed of the entire section. The speed controller 160 reduces the closing speed of the door 10, thereby minimizing damage or noise caused by collision of the door 10 with the door frame 20. More specifically, the speed control unit 160 includes a buffer unit 161, a buffer wire 162 and an adjustment pulley 163.

The buffer part 161 moves along the inner side of the body frame 100 . For example, the buffer unit 161 may be formed of a synthetic resin material or a metal material. The buffer unit 161 is located adjacent to the moving plate 130 . The position of the shock absorber 161 may be changed by the moving plate 130 . The buffer part 161 is moved by the moving plate 130 and is stopped by the second closing cap 112. One side of the buffer wire 162 is connected to the buffer unit 161 . In other words, the buffer unit 161 can reduce the closing speed of the door 10 while supporting one side of the buffer wire 162 .

Buffer wire 162 may be a metal material. One side of the buffer wire 162 is connected to the buffer unit 161 and the other side is connected to the control pulley 163. Unlike the wire 150, the buffer wire 162 is not connected to the first pulley 121 and the second pulley 131. In this case, the buffer wire 162 is preferably disposed so as not to interfere with the wire 150. The length of the buffer wire 162 may vary according to the user's design.

In addition, it is also possible that the buffer spring 162-1 is connected to the buffer wire 162. The buffer wire 162 has almost no ductility, but is stretched when the door 10 is closed by the buffer spring 162-1 to slow down the speed and absorb shock. The length or elastic force of the buffer spring 162-1 may be varied by a user's design. In particular, the buffer spring 162-1 serves to buffer with its own elastic force when the control pulley 163 to which the buffer wire 162 is connected does not rotate.

The control pulley 163 is formed in a pulley shape on the other side of the fixing plate 120. The control pulley 163 is connected to the other side of the buffer wire 162 to control the movement of the first pulley 121 or the buffer unit 161. When the control pulley 163 rotates, the closing speed of the door 10 can be adjusted by winding or unwinding the buffer wire 162 . When the control pulley 163 is fixed, the closing speed of the door 10 can be adjusted by the elastic force of the buffer spring 162-1 connected to the buffer wire 162. More specifically, the adjusting pulley 163 includes an outer cylinder part 163-1, an inner cylinder part 163-2, a gear bolt 163-3, and a first elastic support part 163-4.

In addition, the outer cylinder part 163-1 of the adjusting pulley 163 has a cylindrical pulley shape and a buffer wire 162 passes through and is fixed through a connecting hole 163-11 formed on one side. The outer cylinder 163-1 is formed on the lower side of the fixing plate 120 and does not interfere with the first pulley 121. The inner cylinder part 163-2, the gear bolt 163-3, and the first elastic support part 163-4 are accommodated inside the outer cylinder part 163-1. When the outer cylinder 163-1 rotates, a buffer wire 162 may be wound around the outer circumferential surface. A bolt groove 163-12 may be formed in the center of the outer cylinder 163-1. The outer cylinder portion 163-1 may be tightened or loosened through the bolt groove 163-12.

In addition, the inner tube portion 163-2 of the adjusting pulley 163 is accommodated inside the outer tube portion 163-1. In this case, the inner cylinder part 163-2 is coupled to the outer cylinder part 163-1. Accordingly, the inner cylinder part 163-2 is in close contact with the outer cylinder part 163-1 and moves together. In other words, when the inner cylinder part 163-2 rotates, the outer cylinder part 163-1 also rotates, and if the inner cylinder part 163-2 does not rotate, the outer cylinder part 163-1 does not rotate either. A through hole is formed inside the inner tube portion 163-2 to insert the gear bolt 163-3. A gear groove 163-21 having a stepped cross section is formed inside the inner cylinder 163-2. The gear groove 163-21 is coupled with the gear teeth 163-31 of the gear bolt 163-3.

In addition, the gear bolt 163-3 of the adjusting pulley 163 is inserted into the inner tube portion 163-2 and passes through the fixing plate 120. One end of the gear bolt 163-3 is coupled to and fixed to the fixing plate 120. Gear teeth 163-31 are formed on the outer surface of the gear bolt 163-3. When the gear tooth 163-31 engages with the gear groove 163-21, the movement of the inner tube portion 163-2 and the outer tube portion 163-1 is restricted and does not rotate. When the gear tooth 163-31 leaves the gear groove 163-21, the movement of the inner cylinder 163-2 and the outer cylinder 163-1 is not restricted and rotates according to the movement of the buffer wire 162. will do

In addition, one side of the first elastic support portion 163-4 of the adjusting pulley 163 elastically supports the outer cylinder portion 163-1 and the other side elastically supports the gear bolt 163-3. The first elastic support part 163-4 engages the gear bolt 163-3 with the gear groove 163-21 when no external force is applied. When the outer cylinder 163-1 rotates while compressing the first elastic support 163-4, the gear bolt 163-3 separates from the gear groove 163-21 and rotates. In this way, the elastic wire 162 is connected to the outer tube portion 163-1 by using the outer tube portion 163-1, the inner tube portion 163-2, the gear bolt 163-3, and the first elastic support portion 163-4. By winding or unwinding the door 10, the closing speed of the door 10, in particular, can be partially slowed down.

In addition, the control pulley 163 may further include a move bolt 163-5 and a second elastic support part 163-6. The move bolt 163-5 is coupled to a screw thread formed inside the gear bolt 163-3. In this case, the move bolt 163-5 is located on the same axis as the central bolt groove of the outer cylinder 163-1. Accordingly, the move bolt 163-5 in addition to the outer cylinder 163-1 may be tightened or loosened through the bolt groove. A stepped groove is formed inside the move bolt 163-5, and the first elastic support part 163-4 is accommodated in the outer groove. The move bolt 163-5 and the second elastic support part 163-6 are accommodated in the inner groove. The move bolt 163-5 adjusts the position of the second elastic support 163-6 while rotating along the screw thread.

The second elastic support part 163-6 is received inside the gear bolt 163-3, one side is elastically supported by the first pulley 121, and the other side is elastically supported by the move bolt 163-5. The position of the second elastic support part 163-6 is varied by the move bolt 163-5. For example, when the move bolt 163-5 pushes the second elastic support 163-6 while rotating, the second elastic support 163-6 comes into contact with the first pulley 121 to limit rotation. In other words, as shown in FIG. 7 , one of the plurality of first pulleys 121 comes into contact with and rubs against the second elastic support 163-6, thereby limiting rotation. Accordingly, the closing speed of the door 10 is reduced as a whole.

8, it can be seen that the control pulley 163 is rotated so that the buffer wire 162 and the buffer spring 162-1 are wound around the control pulley 163. In this case, the position of the buffer unit 161 connected to the buffer wire 162 is also changed. Thereafter, when the door 10 is closed and the moving plate 130 tries to rotate while pushing the buffer unit 161, the speed is reduced by the buffer wire 162 and the buffer spring 162-1. Accordingly, the closing speed of the door 10 is reduced. Accordingly, the closing speed of the door 10 may be adjusted by varying the setting of the speed control unit 160 according to the weight, size, length, and the like of the door 10 .

9 to 11 are exemplary views for explaining a configuration for fixing a wire of the semi-automatic device for a door closing speed adjustable according to FIG. 2 to the door.

Referring to FIGS. 9 to 11 , a rotation support 30 may be formed in the door frame 20 . The rotation support 30 rotates according to the rotation direction of the door 10 while supporting the wire 150 connected thereto. The rotation support 30 serves to prevent the wire from being twisted. Accordingly, the door 10 can be opened from 90° to 180° and automatically closed.

When the door 10 is an opening type, it may be connected to the door 10 through a fixture 40 . The wire 150 is connected between the fastener 41 and the fixing plate 42. In this case, the fixing plate 42 may be formed with a protrusion in the form of a screw thread protruding from one side. In this case, a through hole into which the wire 150 can be inserted may be formed in the protrusion of the fixing plate 42 . The wire 150 is fixed when tightened to the protrusion of the fixing plate 42 with the fastener 41 in a screwing manner.

In addition, as shown in FIG. 11 , when the door 10 is of a sliding type, a plurality of bolt holes 43 are formed in the fixing plate 42 to enable bolt coupling to the door 10 . A buffer roller 44 is formed on the fixed plate 42 . The buffer roller 44 can minimize friction with the door frame 20 when the door 10 moves in a sliding manner. In this case, a hooking groove 45 is formed on the protrusion of the fixing plate 42 so that the wire 150 can be hooked. Then, when the projections of the fixing plate 42 are tightened with the fastener 41, it is fixed.

In the above, the present invention has been described with reference to the preferred embodiments described with reference to the drawings, but is not limited thereto. Therefore, the present invention should be interpreted by the description of the claims intended to cover obvious modifications that can be derived from the described examples.

10: door
11: first door
12: second door
13: third door
20: door frame
30: rotation support
40: fixture
41: fastener
42: fixed plate
43: bolt ball
44: buffer roller
45: hanging part
100: semi-automatic device
110: body frame
111: first closing cap
112: second closing cap
120: fixed plate
121: first pulley
122: first guide roller
130: moving plate
131: second pulley
132: guide roller
140: length adjustment unit
150: wire
151: fixing bolt
152: fixing screw
153: door bracket
153-1: bolt hole
153-2: buffer roller
160: speed control unit
161: buffer part
162: buffer wire
162-1: buffer spring
163: control pulley
163-1: outer tube
163-11: connector
163-12: bolt home
163-2: inner tube
163-21: gear groove
163-3: gear bolt
163-31: gear teeth
163-4: first elastic support
163-5: Move Bolt
163-6: second elastic support

Claims (4)

A body frame 100 having rail grooves formed therein;
A fixing plate 120 inserted into the body frame 110 and having a plurality of first pulleys 121 formed on one side thereof;
A moving plate 130 inserted into the body frame 110, spaced apart from the fixing plate 120 at a predetermined interval, and having a plurality of second pulleys 131 formed on one side thereof;
A length adjustment unit 140 having one side connected to the fixed plate 120 and the other side connected to the moving plate 130 and having a variable length while being compressed or restored by an external force;
A wire 150 having one side connected to the door 10 and the other side wound around the plurality of first pulleys 121 and the plurality of second pulleys 131 and connected to the fixing plate 120; and
A semi-automatic device (100) for a closing speed control type door comprising a speed controller (160) for controlling the moving speed of the door (10). According to claim 1,
The speed control unit 160,
A buffer unit 161 moving along the inside of the body frame 100 and located adjacent to the moving plate 130;
A buffer wire 162 having one side connected to the buffer part 161; and
It is formed in a pulley shape on the other side of the fixing plate 120, and the other side of the buffer wire 162 is connected to adjust the first pulley 121 or the control pulley 163 for controlling the movement of the buffer part 161 A semi-automatic device (100) for a closing speed-adjustable door comprising: According to claim 2,
The adjusting pulley 163,
An outer cylinder portion 163-1 on one side of which the buffer wire 152 passes through and is fixed;
an inner cylinder portion 163-2 accommodated inside the outer cylinder portion 163-1 and having a gear groove 163-21 formed therein;
a gear bolt 163-3 inserted into the inner cylinder 163-2 and having gear teeth 163-31 formed on the outer surface to engage with the gear groove 163-21; and
The gear bolt 163-3 is engaged with the gear groove 163-21 while one side elastically supports the outer cylinder portion 163-1 and the other side elastically supports the gear bolt 163-3. 1 includes an elastic support (163-4),
Closing speed control type in which the gear bolt 163-3 separates from the gear groove 163-21 and rotates when the outer cylinder 163-1 rotates while compressing the first elastic support 163-4. Semi-automatic device for doors (100). According to claim 3,
The adjusting pulley 163,
a move bolt (163-5) coupled to a screw thread formed inside the gear bolt (163-3); and
A second elastic support part 163-6 accommodated inside the gear bolt 163-3, one side elastically supported by the first pulley 121, and the other elastically supported by the move bolt 163-5 ) further including,
When the move bolt (163-5) is rotated, the second elastic support (163-6) contacts the first pulley (121) to limit rotation (100).

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