KR102626536B1 - Semi-automatic apparatus for controlling of adjusting velocity of door - Google Patents

Abstract

The present invention relates to a semi-automatic device 100 for a door with adjustable closing speed, which includes a body frame 110 having a rail groove formed on the inside, and a plurality of first devices inserted inside the body frame 110 and on one side. A fixing plate 120 on which the pulley 121 is formed is inserted into the inside of the main body frame 110, and is formed to be spaced apart from the fixing plate 120 at a predetermined interval, and a plurality of second pulleys 131 on one side. A moving plate 130 is formed, one side is connected to the fixed plate 120 and the other side is connected to the moving plate 130, and a length adjustment part 140 whose length is variable while being compressed or restored by an external force; , a wire 150 whose one side is connected to the door 10 and whose other side is wound around the plurality of first pulleys 121 and the plurality of second pulleys 131 and connected to the fixing plate 120; It includes a speed control unit 160 that controls the moving speed of the door 10.

Description

Semi-automatic device for doors with adjustable closing speed {SEMI-AUTOMATIC APPARATUS FOR CONTROLLING OF ADJUSTING VELOCITY OF DOOR}

The present invention relates to a semi-automatic device for a door with an adjustable closing speed. More specifically, a technology is disclosed that allows the door to be opened manually and closed automatically while controlling the closing speed.

Sliding door devices include automatic sliding door devices that use motors and rails to automatically open or close the sliding door, and manual sliding door devices that open the sliding door directly with your hand. The advantage of the automatic type is convenience, but the disadvantage is that it costs a lot of money to install, and the disadvantage of the manual type is that it costs less but is less convenient. In this situation, there is a growing interest in semi-automatic sliding door devices that can lower installation costs while maintaining the same convenience as automatic sliding door devices.

Among the conventional technologies, Republic of Korea Patent No. 10-2168537 (registered on October 15, 2020) relates to a semi-automatic door using a gas spring and a moving pulley. Compared to an automatic door, the structure is simplified to reduce the size and manufacturing. Technologies that seek to reduce costs and maintenance costs have been disclosed. However, the conventional technology has a limitation in that it cannot adjust the closing speed of the door depending on the type, weight, and installation location of the door.

The technical problem to be solved by the present invention is to provide a semi-automatic device for a closing speed-adjustable door that can automatically close the door without power and control the closing speed.

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

In addition, the purpose is to provide a semi-automatic device for a door with an adjustable closing speed that can automatically close the door and reduce its overall speed.

The semi-automatic device for a door with adjustable closing speed according to an embodiment of the present invention includes a main body frame 110 with a rail groove formed on the inside, and a plurality of first pulleys ( 121) is formed, and is inserted into the inside of the main body frame 110, and is formed to be 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 of which is connected to the fixed plate 120 and the other side of which is connected to the moving plate 130, a length adjusting part 140 whose length is variable as it is 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 that controls the moving speed.

In addition, the speed control unit 160 moves along the inside of the main body frame 110, and has a buffer unit 161 located adjacent to the moving plate 130, and one side is attached to the buffer unit 161. It is formed in the shape of a pulley on the other side of the connected buffer wire 162 and the fixing plate 120, 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) that controls.

In addition, the control pulley 163 has an outer cylinder 163-1 through which the buffer wire 162 is fixed on one side, is accommodated inside the outer cylinder 163-1, and has a gear groove 163 on the inner surface. -21) is formed, and is inserted into the inner cylinder part 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) engaged with, one side elastically supports the outer cylinder portion (163-1), and the other side elastically supports the gear bolt (163-3) in the gear groove (163-21). It includes a first elastic support portion (163-4) that engages the gear bolt (163-3), and when the outer cylinder portion (163-1) rotates while compressing the first elastic support portion (163-4), the gear bolt (163-3) can be rotated away from the gear groove (163-21).

In addition, the control pulley 163 is accommodated inside the move bolt 163-5 and the gear bolt 163-3, which are coupled to the thread formed on the inside of the gear bolt 163-3, and one side is It further includes a second elastic support portion 163-6, which is elastically supported by the first pulley 121 and whose other side is elastically supported by the move bolt 163-5, and rotates the move bolt 163-5. When the second elastic support portion 163-6 contacts the first pulley 121, rotation may be restricted.

Accordingly, the closing speed can be adjusted while automatically closing the door without power.

Additionally, the speed can be partially reduced as the door closes automatically.

Additionally, the overall speed can be reduced as the door closes automatically.

Figure 1 is an exemplary diagram for explaining the connection relationship between a door and a door frame in a semi-automatic device for a door with adjustable closing speed according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of a semi-automatic device for a door with adjustable closing speed according to an embodiment of the present invention.
Figure 3 is a detailed view of the speed control part of the semi-automatic device for a closing speed-adjustable door according to Figure 2.
Figure 4 is a configuration diagram of the control pulley among the speed control parts of the semi-automatic device for the closing speed adjustable door according to Figure 2.
Figure 5 is a cross-sectional configuration diagram of the control pulley according to Figure 4.
Figure 6 is an example diagram for explaining the connection relationship between the inner cylinder and the gear bolt of the control pulley according to Figure 4.
Figure 7 is an example diagram for explaining the connection relationship between the second elastic support portion and the first pulley of the control pulley according to Figure 4.
Figure 8 is an example diagram for explaining the operating principle of the semi-automatic device for a door with adjustable closing speed according to Figure 2.
FIGS. 9 to 11 are exemplary diagrams for explaining the configuration for fixing the wire of the semi-automatic device for a closing speed-adjustable door according to FIG. 2 to the door.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. The terms used are terms selected in consideration of their functions in the embodiment, and the meaning of the terms may vary depending on the intention of the user or operator or precedents. Therefore, the meaning of terms used in the embodiments described below, if specifically defined in the present specification, will follow the definition, and if there is no specific definition, the meaning will be interpreted as generally recognized by those skilled in the art.

Figure 1 is an exemplary diagram for explaining the connection relationship between a door and a door frame of a semi-automatic device for a door with an adjustable closing speed according to an embodiment of the present invention, and Figure 2 is an illustration of a semi-automatic device for an adjustable closing speed door according to an embodiment of the present invention. It is an exploded perspective view of a semi-automatic device, and Figure 3 is a detailed view of the speed control part of the semi-automatic device for a closing speed-adjustable door according to Figure 2, and Figure 4 is a speed of the semi-automatic device for a closing-speed adjustable door according to Figure 2. It is a configuration diagram of the control pulley among the control units, Figure 5 is a cross-sectional configuration diagram of the control pulley according to Figure 4, and Figure 6 is an example diagram for explaining the connection relationship between the inner cylinder part and the gear bolt among the control pulleys according to Figure 4. , FIG. 7 is an example diagram for explaining the connection relationship between the second elastic support portion of the control pulley and the first pulley according to FIG. 4, and FIG. 8 illustrates the operating principle of the semi-automatic device for a closing speed adjustable door according to FIG. 2. This is an example for doing so.

Referring to Figures 1 to 8, the semi-automatic door device 100 for controlling the closing speed according to an embodiment of the present invention is inserted into the door frame 20 connected to the door 10. Here, the door 10 is used to encompass all sliding doors, hinged doors, and interlocking doors. The semi-automatic device 100 is preferably sized to move along the 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 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 minimize the volume and reduce the space on the door frame 20 side. 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 a door for controlling closing speed according to an embodiment of the present invention includes a main 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 main body frame 110 is a frame with 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 on the inside. A rail is formed inside the main body frame 110. This allows the fixed plate 120, the moving plate 130, etc. to move inward through sliding engagement. The length and size of the main body frame 110 can be varied according to the user's design. The main body frame 110 is coupled to and fixed to the door frame 20.

In addition, a first finishing cap 111 and a second finishing cap 112 are inserted into both open ends of the main body frame 110, respectively. The first finishing cap 111 and the second finishing cap 112 close both ends of the main body frame 110, and a coupling hole is formed so that the main body frame 110 can be bolted to the door frame 20 and fixed. . The first closing cap 111 and the second closing cap 112 may be made of synthetic resin or metal. The first finishing cap 111 is coupled to the fixing plate 120 and serves to fix the fixing plate 120.

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

Additionally, 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 one turn around at least one first pulley 121. This is to control the closing speed of the door 10. A first guide roller 122 may be formed on the fixing plate 120. The first guide roller 122 serves to guide the wire 150 to rotate by the rotation support member 30 when connecting the wire 150 to the hinged door frame 20 as shown in FIG. 10.

The moving plate 130 is positioned horizontally on one side of the main body frame 110. The moving plate 130 is formed to be spaced apart from the fixed plate 120 at a preset interval. The moving plate 130 may be made of a metal material and may have a plurality of through holes. A plurality of second pulleys 131 are formed on the moving plate 130. In this case, a wire 150, which will be described later, is wound around the plurality of second pulleys 131. These 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 main 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 variable by the length adjustment unit 140, which will be described later.

In addition, the length of the wire 150 passing through them varies depending on the number of the first pulleys 121 of the fixed plate 120 and the plurality of second pulleys 131 of the moving plate 130. In other words, the wire 150 is wound while reciprocating between the plurality of first pulleys 121 and the plurality of second pulleys 131. Depending on the number of turns of the wire 150 that reciprocates, the operating distance of the wire 150 according to the variable length of the length adjustment unit 140, which will be described later, varies. For example, if the number of turns of the wire 150 is 4, the moving distance of the door 10 connected to the wire 150 may be increased by 4 times compared to the variable length of the length adjusting unit 140.

Additionally, 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 can be inserted into the main body frame 110 and moved. In this case, the second guide roller 132 can move along the rail of the inner wall of the main body frame 110. The second guide roller 132 is a synthetic resin roller with a bearing inserted therein, and can minimize resistance and noise and power loss when moving the moving plate 130.

One side of the length adjustment portion 140 is connected to the fixed plate 120, and the other side is connected to the moving plate 130. For example, the length adjusting part 140 may have an elastic spring inserted therein, or may be implemented as a shock absorber that cushions the pressure caused by external force by hydraulic pressure. In other words, the length adjustment part 140 is compressed by an external force and then restored to its original position by a restoring force, thereby changing the length. In this case, the position of the fixed plate 120 connected to one side of the length adjusting unit 140 does not change, but the position of the moving plate 130 varies depending on the length adjusting unit 140. The length adjustment portion 140 is compressed as the door 10 moves to open, and in this case, cushions the impact. When the external force is released, the length adjusting unit 140 moves so that its length is restored and the door 10 is automatically closed.

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 made of a metal material. The wire 150 is wound while passing through a plurality of first pulleys 121 of the fixed plate 120 and a plurality of second pulleys 131 of the moving plate 130. The wire 150 compresses the gap between the fixed plate 120 and the moving plate 130 according to the movement of the door 10. In this case, the length adjustment part 140 connected between the fixed plate 120 and the moving plate 130 is also compressed. For example, when the door 10 moves open due to an external force, the restoring force of the length adjusting part 140 causes the door 10 to move closed again so that it closes automatically.

More specifically, one side of the wire 150 moves from one side of the fixing plate 120 to the other side and is connected to the door 10. 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 on the first pulley 121 that is not wound among the plurality of first pulleys 121 and is wound again on the second pulley 131 that is not wound among the plurality of second pulleys 131. do. Afterwards, 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 Vogut in a state of at least one turn. This is to slow down the closing speed of the door 10.

In addition, the wire 150 can be bent and inserted into the groove of the fixing bolt 151 connected to the door 10, and fixed by combining the fixing screw 152 with the fixing bolt 151. In this case, the fixing bolt 151 and the fixing screw 152 have threads so that the wire 150 can be brought into close contact with them through screw coupling. The fixing bolt 151 may be bolted to the door 10. A straight groove or a cross groove is formed on the fixing screw 152 so that it can be rotated and fixed.

In this case, the fixing bolt 151 can also be formed on the door bracket 153. The door bracket 153 is a flat member bolted to one side of the door. A plurality of bolt holes 153-1 are 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, multiple bolt holes 153-1 may be drilled in order to mount the roller in various positions depending on the width or length of the door 10.

The speed control unit 160 controls the moving speed of the door 10. The speed control unit 160 may reduce the speed of a partial section where the door 10 is closed or may reduce the speed of the entire section. The speed control unit 160 reduces the closing speed of the door 10, thereby minimizing damage or noise caused by the door 10 colliding 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 unit 161 moves along the inside of the main body frame 110. For example, the buffer portion 161 may be made of synthetic resin or metal. The buffer unit 161 is located adjacent to the moving plate 130. The position of the buffer unit 161 can be changed by the moving plate 130. The buffer portion 161 is moved by the moving plate 130 and stopped by the second closing cap 112. One side of the buffer wire 162 is connected to the buffer portion 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.

The buffer wire 162 may be made of metal. One side of the buffer wire 162 is connected to the buffer portion 161, and the other side is connected to the adjustment puller 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, it is preferable that the buffer wire 162 is arranged so as not to interfere with the wire 150. The length of the buffer wire 162 may vary depending on the user's design.

Additionally, it is possible for a buffer spring 162-1 to be connected to the buffer wire 162. The buffer wire 162 has little ductility, but expands when the door 10 is closed by the buffer spring 162-1, thereby reducing the speed and cushioning the impact. The length or elastic force of the buffer spring 162-1 can be varied according to the user's design. In particular, the buffer spring 162-1 serves to cushion 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. The control pulley 163 can control the closing speed of the door 10 by winding or unwinding the buffer wire 162 when rotating. 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 control pulley 163 includes an outer cylinder portion 163-1, an inner cylinder portion 163-2, a gear bolt 163-3, and a first elastic support portion 163-4.

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

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

In addition, the gear bolt 163-3 of the control pulley 163 is inserted into the inner cylinder 163-2 and penetrates the fixing plate 120. The gear bolt 163-3 is fixed by having one end coupled to the fixing plate 120. The gear bolt 163-3 has gear teeth 163-31 formed on its outer surface. When the gear teeth 163-31 are engaged with the gear grooves 163-21, the movements of the inner cylinder 163-2 and the outer cylinder 163-1 are restricted and do 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). I do it.

In addition, one side of the first elastic support portion 163-4 of the adjustment 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 portion 163-4 allows the gear bolt 163-3 to engage with the gear groove 163-21 when no external force is applied. When the outer cylinder portion 163-1 rotates while compressing the first elastic support portion 163-4, the gear bolt 163-3 is separated from the gear groove 163-21 and rotation is possible. In this way, the elastic wire 162 is connected to the outer cylinder portion 163-1 using the outer cylinder portion 163-1, the inner cylinder 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, especially the dependent part, can be partially slowed.

In addition, the control pulley 163 may further include a move bolt 163-5 and a second elastic support portion 163-6. The move bolt (163-5) is coupled to the thread formed on the inside of 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 can be tightened or loosened through the bolt groove. A stepped groove is formed on the inside of the move bolt (163-5), and the first elastic support portion (163-4) is accommodated in the outer groove. The move bolt 163-5 and the second elastic support portion 163-6 are accommodated in the inner groove. The move bolt (163-5) rotates along the screw thread to adjust the position of the second elastic support portion (163-6).

The second elastic support portion 163-6 is accommodated 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 portion 163-6 is variable by the move bolt 163-5. For example, when the move bolt 163-5 rotates and pushes the second elastic supporter 163-6, the second elastic supporter 163-6 contacts the first pulley 121 to limit rotation. In other words, as shown in FIG. 7, one of the plurality of first pulleys 121 contacts and rubs against the second elastic support portion 163-6, thereby limiting rotation. Accordingly, the closing speed of the door 10 is overall reduced.

In Figure 8, it can be seen that the rotation of the control pulley 163 causes the buffer wire 162 and the buffer spring 162-1 to be wound around the control pulley 163. In this case, the position of the buffer portion 161 connected to the buffer wire 162 also changes. 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. Therefore, the closing speed of the door 10 can be adjusted by varying the settings of the speed control unit 160 according to the weight, size, length, etc. of the door 10.

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

9 to 11, a rotation support member 30 may be formed on the door frame 20. The rotation support member 30 is supported by the wire 150 and rotates according to the rotational direction of the door 10. The rotation support member 30 serves to prevent the YE from being twisted. Accordingly, the door 10 can be opened from 90° to 180° and automatically closed.

If the door 10 is a hinged 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 have a protruding thread-shaped protrusion formed on 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. When the fastener 41 is screwed onto the protrusion of the fixing plate 42, the wire 150 is fixed.

In addition, when the door 10 is a sliding type as shown in FIG. 11, a plurality of bolt holes 43 are formed in the fixing plate 42 to enable bolting to the door 10. A buffer roller 44 is formed on the fixing 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 locking groove 45 is formed on the protrusion of the fixing plate 42 so that the wire 150 can be caught. Afterwards, it is fixed by tightening the protrusion of the fixing plate 42 with the fastener 41.

In the above, the present invention has been described focusing on preferred embodiments described with reference to the drawings, but is not limited thereto. Accordingly, the present invention should be construed by the recitation of the claims, which are intended to cover obvious modifications that may be derived from the described embodiments.

10: door
11: first door
12: second door
13: Third door
20: Door frame
30: rotation support district
40: fixture
41: fastener
42: fixing plate
43: bolt ball
44: Buffer roller
45: catching part
100: Semi-automatic device
110: main body frame
111: first closing cap
112: second closing cap
120: fixing plate
121: first pulley
122: 1st guide roller
130: moving plate
131: second pulley
132: Guide roller
140: Length adjustment part
150: wire
151: fixing bolt
152: fixing screw
153: Door bracket
153-1: Bolt Ball
153-2: Buffer roller
160: Speed control unit
161: buffer part
162: Buffer wire
162-1: Buffer spring
163: Control pulley
163-1: Ministry of Foreign Affairs and Trade
163-11: Connector
163-12: Bolt Home
163-2: Ministry of Internal Affairs and Communications
163-21: Gear groove
163-3: Gear bolt
163-31: Gear
163-4: First elastic support portion
163-5: Move Bolt
163-6: second elastic support portion

Claims (4)

A main body frame (110) with a rail groove formed on the inside;
A fixing plate 120 inserted inside the main body frame 110 and having a plurality of first pulleys 121 formed on one side;
A moving plate 130 inserted into the main body frame 110, spaced apart from the fixed plate 120 at a predetermined interval, and having a plurality of second pulleys 131 on one side;
A length adjusting part 140 whose one side is connected to the fixed plate 120 and the other side connected to the moving plate 130 and whose length is variable as it is compressed or restored by an external force;
A wire 150 that has 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
It includes a speed control unit 160 that controls the moving speed of the door 10,
The speed control unit 160,
A buffer part 161 that moves along the inside of the main body frame 110 and is located adjacent to the moving plate 130, a buffer wire 162 on one side of which is connected to the buffer part 161, and It is formed in the shape of a pulley on the other side of the fixing plate 120, and includes an adjustment pulley 163 to which the other side of the buffer wire 162 is connected to control the movement of the first pulley 121 or the buffer unit 161. Semi-automatic device (100) for a door with adjustable closing speed. delete According to paragraph 1,
The control pulley (163) is,
An outer cylinder portion (163-1) through which the buffer wire (162) is fixed on one side;
An inner cylinder portion (163-2) accommodated inside the outer cylinder portion (163-1) and having a gear groove (163-21) formed on the inner surface;
A gear bolt (163-3) that is inserted into the inner cylinder (163-2) and has gear teeth (163-31) formed on its outer surface to engage with the gear groove (163-21); and
One side elastically supports the outer cylinder 163-1, and the other side elastically supports the gear bolt 163-3, and the gear bolt 163-3 engages the gear groove 163-21. 1 Includes an elastic support portion (163-4),
A closing speed control type that causes the gear bolt (163-3) to separate from the gear groove (163-21) and rotate when the outer cylinder (163-1) rotates while compressing the first elastic support portion (163-4). Semi-automatic device for doors (100). According to paragraph 3,
The control pulley (163) is,
A move bolt (163-5) coupled to a thread formed on the inside of the gear bolt (163-3); and
A second elastic support portion (163-6) accommodated inside the gear bolt (163-3), one side of which is elastically supported by the first pulley (121), and the other side of which is elastically supported by the move bolt (163-5). ) further includes,
A semi-automatic device (100) for a closing speed-adjustable door in which the second elastic support portion (163-6) contacts the first pulley (121) to limit rotation when the move bolt (163-5) is rotated.

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