KR20100123171A - Door stopper apparatus having actuator structure - Google Patents

Abstract

PURPOSE: A door stopper having a simplified actuator structure is provided to enable the horizontal movement of a slider by suppressing the left/right torsion of a slider. CONSTITUTION: A door stopper(1) having a simplified actuator structure comprises a main body, a rolling piece(50), and a link end(52). A support piece is formed in the main body. An operating wheel(20) is formed in the main body. Multiple supporting members(51) are placed between an elevation piece and a support piece. The operating wheel and the elevation piece can be flexibly fixed, since a supporter member supports the elevation piece according to the forward and reverse rotation of the rolling piece. The link end is projected from the edge of the rolling piece.

Description

Door stopper apparatus having a simplified actuator structure

The present invention relates to a door stopper having a simplified actuator structure, and more particularly, to suppress the closing force of the door closer and to fix the fire door in an open state, and in case of emergency occurrence of a fire door such as fire. The rotation of the rolling piece provided by the support members for supporting and fixing the operation wheel through the actuator rotates forward to realize the closing of the fire door by releasing the support state of the operation wheel. In particular, the actuator has improved operability and simplified structure. The present invention relates to a door stopper having a simplified actuator structure in which an open damper interlocked with the actuator is provided to easily open the fire door with a small force.

Generally, a door closer is installed in a fire door so that the fire door may be gradually closed by gradually rotating the fire door in one direction.

In addition, a door closer providing a closing force of the fire door and a door stopper which physically suppresses the closing force of the door closer are installed in the fire door which is installed to block the inflow of smoke when a fire or the like occurs. When the fire door is kept open, the fire door is released by the door stopper in case of a fire, and the fire door is quickly closed.

However, the conventional door stopper does not have a stable restraint structure, and thus a strong force is required to restrain the fire door, and thus, the apparatus is enlarged and the apparatus is complicated.

In addition, the conventional door stopper has a function of simply fixing the fire door, the fire door fixed through the door stopper has a limit that can not be opened and closed arbitrarily.

An object of the present invention devised to solve the above problems, in general, by suppressing the closing force of the door closer to fix the fire door in the open state, when an emergency occurrence of a fire door such as fire is required, through the actuator The support member for supporting and fixing the operation wheel is rotated in the forward direction, the rolling piece is implemented to implement the closing of the fire door through the release of the support state of the operation wheel, in particular the actuator is achieved the improved operability and simplification of the structure, In addition, an open damper interlocked with the actuator is installed to provide a door stopper having a simplified actuator structure for easily opening the fire door with a small force.

The above object is achieved by the following configuration provided in the present invention.

The door stopper having a simplified actuator structure according to the present invention,

A main body provided with a support piece; An operating wheel having a connection arm connected to the operation arm of the door closer and an elastic stopper is provided, and an elevating piece for elastically fixing the operating wheel through up and down is axially installed to be stacked up and down, between the elevating piece and the supporting piece. The cloud piece is provided with a plurality of supporting members are disposed, so that the elastic wheel of the operation wheel and the lifting piece is set according to the support of the lifting piece through the support member by the forward and reverse rotation of the rolling piece,

Link end is formed to protrude from the edge of the cloud piece, the link end is provided with an actuator for moving in the left or right direction to rotate the cloud piece in the right or right direction,

The actuator includes a fixed bracket provided with a straight left and right conveying rails; A slider installed on the left and right transport rails in a sliding structure, the slider being linked with the link end of the rolling piece; And a forward and reverse motor for providing an action force required for the straight forward movement of the slider, wherein the slider has a lead hole penetrated therethrough, and the lead hole is provided with a rotational force of the forward and reverse motor so that the ball screw rotates in the forward or reverse direction. Installed so that

The slider is configured to convert the rotational force of the stationary motor into a straight feed force through a power conversion structure consisting of a lead ball and a ball screw, and to move in the left or right direction so that the link-bound cloud piece is rotated in the forward or reverse direction at right angles. do.

Preferably, transmission gears are installed at the end of the ball screw passing through the rotary shaft and the slider of the stationary motor, and the ball screw is configured to rotate by receiving the rotational force of the stationary motor through the transmission gear.

More preferably, the main body on which the actuator is disposed is provided with an opening damper which provides an opening force opposed to the closing force of the fire door in a forward and backward conveying structure, and a set rod is horizontally transferred between the slider of the actuator and the rear of the opening damper. Installed into the structure,

When the set rod is moved in the right direction by the support of the slider moved in the right direction to support the rear of the open damper, the open damper provides an opening force opposite to the closing force of the fire door through the support of the set rod. When the slider for supporting the set rod in the right direction moves to the left, the support of the open damper by the set rod is released, so that the open damper is configured to retreat without supporting the closed fire door.

The open damper is formed by protruding a support tool supported by a compression spring on an open front surface of a cylinder installed in a main body in a forward and backward structure, and the forward damper is provided with a forward spring for supporting the open damper in a forward direction. The damping force of the spring is configured so that the open damper has a forward propensity to move, and the setting rod is provided with a positioning spring for holding the set rod in the left direction, and the set rod is configured to have a left moving tendency by the positioning spring. do.

In addition, the setting rod is configured of an elastic type having a retractable spring disposed between the first rod member and the second rod member, so that even if the slider moves to the right in the state in which the open damper is retracted by the closing of the door, the set rod is moved. It is configured to prevent breakage of the set rod by the contraction of the expansion spring, and when the fire door is opened and the open damper is advanced, the setting rod is configured to support the rear of the open damper by the extension of the expansion spring.

 On the other hand, the support piece is formed to partition the falling section and the rising section, the support members disposed on the cloud piece is installed on the upper surface of the support piece formed to partition the falling section and the rising section,

When the slider of the actuator moves forward and the rolling piece rotates rightward in the forward direction, the support member is located in the lower section and does not support the lifting piece.When the slider of the actuator retracts and the rolling piece rotates in the right direction in the reverse direction, the supporting member is located in the rising section. Supporting the elevating piece, it is configured to be elastically fixed between the operating arm and the elevating piece by a gripping action by the elastic stopper.

As described above, in the present invention, in providing a door stopper configured to set the elastically fixed and released state of the operation wheel and the elevating piece by the height adjustment of the elevating piece implemented by the forward and reverse driving of the actuator, the actuator is a slider. A simplified power conversion structure consisting of a lead groove and a ball screw is provided between the motor and the electric motor.

The power conversion structure is very simple in structure, and since the ball screw is installed through the slider installed in the feed rail straight to the feed rail, the left and right torsion of the slider can be suppressed so that the stable left and right movement of the slider can be realized, thereby improving operation. It combines stability.

In particular, in the present invention, by providing an open damper interlocked with the actuator, and configured to assist the opening force of the fire door in the case of non-fire, it has the advantage that the door can be opened with a small force.

Hereinafter, a door stopper having a simplified actuator structure proposed as a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the installation state of the lifting type door stopper proposed as a preferred embodiment in the present invention, Figure 2 is an assembly state diagram showing the overall configuration of the lifting type door stopper proposed as a preferred embodiment in the present invention, 3 and 4 show the elastic stopping structure formed between the operation wheel and the lifting piece by the lifting type door stopper proposed as a preferred embodiment in the present invention, Figure 5 is proposed as a preferred embodiment in the present invention In the lifting door stopper being used, it shows the state of the lifting angle adjustment.

The lifting door stopper 1 according to the present invention is fixed to the door frame 210 as shown in Figure 1, the door closer 100 to provide a closing force of the fire door 200 through the connection arm 21 It is connected to the operation arm 110 of the, normally suppress the rotation of the operation arm 110 for the closing of the fire door 200 to maintain the opening of the fire door 200, the rotation when the air supply damper is activated fire occurs By enabling the rotation of the suppressed operating arm 110 to close the fire door 200, the interior of the room and the emergency exit is shielded to form a smoke control area.

As shown in FIGS. 1 to 5, the lifting type door stopper 1 according to the present embodiment is connected to the operation arm 110 of the door closer 100 to the main body 10 on which the support piece 40 is formed. An operation wheel 20 having a connection arm 21 formed thereon; Lifting piece 30 to facilitate the elastic fixing of the operation wheel 20 is formed in the form of a shaft 11 to be stacked on each other, the support piece 40 may be formed integrally with the body, or separately It may be manufactured and fixed to the main body 10.

The lifting type door stopper 1 configured as described above, when the operation wheel 20 connected to the operation arm 110 of the door closer 100 is physically fixed in the state where the fire door 200 is opened, the fire door 200. Is kept open, and when the fixed state of the operation wheel 20 is released, the operation wheel 20 is rotated in the forward direction by the closing force of the door closer 100, and as a result, the fire door 200 is closed.

In this embodiment, by providing an elastic stopping structure between the operation wheel 20 and the lifting piece 30, so that the operating wheel is elastically fixed to the lifting piece by the force generated by the elastic stopping structure have.

To this end, in the present embodiment, the left and right sides of the operation wheel 20, the lower opening type charging groove 22a is formed and the spring 22b and the support 22c are sequentially inserted into the charging groove 22a. Elastic stopper 22 is provided.

In addition, a cover 23 having a protruding hole 23a, which is a partial protruding path of the support 22c, is provided at a lower portion of the operation wheel 20 provided with the elastic stopper 22, and a support tool. Desorption of (22c) is prevented, and the diameter of the protrusion hole (22a) is smaller than the support (22c).

In addition, the lifting piece 30 is formed so that the support hole 22c of the stopper 22 of the elastic stopper 22 is seated and fixed, and the long groove-type feed groove 32 is partitioned. In the present invention, for example, an elastic stopper 22 is provided on both left and right sides of the operation wheel 20, and a pair of fixed grooves 31 and a pair of transfer grooves 32 are provided on the upper surface of the elevating piece 30. By forming the left and right symmetrical alternating structure, the support 22c of the pair of elastic stoppers 22 is fixed groove 31 or the transfer groove formed in the lifting piece 30 by the rotation of the operation wheel 20. It is comprised so that it may alternatively be located in (32).

Therefore, as shown in FIG. 3, when the support 22c of the elastic stopper 22 is positioned in the fixing groove 31, the operation wheel (by the elastic support force formed between the elastic stopper 22 and the fixing groove 31). 20 is fixed and the fire door 200 is fixed in the open state, wherein the elastic support force for physically stopping the operation wheel 20, the fire door is provided to the operation wheel 20 through the door closer (100) Greater than the closing force of 200).

However, as shown in FIG. 4, when the operation wheel 20 is rotated in the forward direction by providing a closing force greater than the elastic support force generated through the elastic stopping structure to the fire door 200 from the user and the like, the fixed groove 31 is positioned. The support 22c of the elastic stopper 22 is positioned in the transfer groove 32.

When the support 22c is located in the transfer groove 32, the operation wheel 20 can be freely rotated within the transfer section of the transfer groove 32, so that the fire door 200 is formed of the door closer 100. It is gradually closed by the closing force.

Thus, the lifting type door stopper 1 according to the present embodiment has an elastic support force formed between the elastic stopper 22 and the fixing groove 31 unless a separate external force is provided to the fire door 200 as shown in FIG. 3. By the fire door 200 is fixed in the open state, and as shown in Figure 4 when the user adds a closing force to the fire door 200, the fire door 200 is fixed in the open state by the elastic support force gradually Can be closed.

Accordingly, the lifting type door stopper 1 according to the present embodiment has a fixing groove (22c) formed in the lifting piece 30 of the support 22c of the elastic stopper 22 installed in the operation wheel 20 as shown in FIG. 31, even if the fire door 200 is fixed in an open state, as shown in FIG. 4, the user applies an external force to the fire door 200 to transfer the support 22c of the elastic stopper 22 to the transfer groove 32. When positioned, the fire door 200 is optionally closed.

On the other hand, since the fixed angle of the elevating piece 30 is substantially the fixed angle of the operation wheel 20 connected to the fire door 200, changing the installation angle of the elevating piece 30, the opening angle of the fire door 200 This can be adjusted.

In consideration of this, in the present embodiment, as shown in FIG. 5, the engaging grooves 33 are formed at the edge of the lifting piece 30, and the main body 10 is engaged with the engaging groove 33 of the lifting piece 30. By providing a fixing member 34 for fixing the lifting piece 30, the operator can adjust the installation angle of the lifting piece 30 in consideration of the opening angle of the fire door 200.

Here, the fixing member 34 is to be conveyed in the forward or reverse direction by the adjustment bolt 34a installed in the fixing piece 35 in a rotational structure, the lifting piece 30 on the inner wall facing the edge of the lifting piece 30 ) Is engaged with the engaging groove (33) of the engaging groove (34b) is formed.

Accordingly, the operator rotates the adjustment bolt 34a forward and backward as shown in FIG. 5 to promote forward and backward transport of the fixing member 34 to install the angle of the lifting piece 30 and the fixed angle of the operation wheel 20 and the fire door 200. The opening angle of can be finely adjusted.

That is, when the fixing member 34 is transferred in the forward direction by the rotation of the adjustment bolt 34a, the lifting piece 30 is rotated in the forward direction, and when the fixing member 34 is transferred in the reverse direction, the lifting piece 30 is also reversed. Is rotated.

On the other hand, the lifting type door stopper 1 according to the present embodiment, the fire door 200 by the elastic pressing force provided by the elastic stopper 22 and the reaction force provided by the lifting piece 30 The fixing of the operation wheel 20 for fixing the open state of the) is made.

Figure 6 is a lifting door stopper proposed in the preferred embodiment of the present invention, the support piece and the rolling piece installed on the main body, and the actuator coupled to the forward and reverse rotation of the rolling piece and the coupling state of the open damper interlocking with the actuator 7 and 8 are a lifting door stopper proposed as a preferred embodiment in the present invention, the fixed or unlocked state of the fire door by the forward and reverse rotation of the rolling piece by the drive of the actuator, and the open damper FIG. 9 is an enlarged view illustrating an operation state of part 'A' of FIG. 8C.

In this embodiment, by providing a height adjustment structure consisting of a rolling piece 50 on the bottom surface of the elevating piece 30, according to the support of the elastic stopper 22 through the elevating piece 30 of the rotary wheel 20 Fixation is controlled.

That is, during normal operation, the lifting piece 30 is raised to stably support the support 22c of the elastic stopper 22 to stably fix the operation wheel 20, and the lifting piece 30 is lowered and operated when a fire occurs. By not supporting the support tool 22c of the elastic stopper 22 provided in the wheel 20 anymore, the operation wheel 20 is prevented from being fixed by the elastic support force.

If the support of the elastic stopper 22 provided in the operation wheel 20 is not made in this way, the operation wheel 20 is rotated in the forward direction by the closing force of the door closer 100, as a result, the fire door 200 is It is closed.

To this end, in the present embodiment, the height adjusting portion 41 is formed on the upper surface of the support piece 40 facing the bottom of the lifting piece 30 so that the rising section H and the falling section L are partitioned. The support member 51 is provided between the height adjustment part 41 of the said support piece 40, and the bottom face of the elevating piece 30. As shown in FIG.

Referring to the drawings, the upper surface of the support piece 40 is formed with a height adjusting portion 41 formed by alternating four rising sections (H) and four falling sections (L), the height adjusting section 41 and the lifting Four support members 51 are arranged at equal intervals between the bottom faces of the pieces 30.

Therefore, as shown in FIG. 7C, when the support member 51 is positioned in the rising section H of the height adjusting part 41 formed on the supporting piece 40, the lifting piece 20 maintains the raised state, and thus the lifting piece 20 forms a stable support state with the support 22c of the elastic stopper 22 to suppress the rotation of the rotary wheel 20, wherein the fire door 200 maintains the open state.

However, as shown in FIG. 7B, the support member 51 is moved or the support piece 40 itself is rotated in the forward direction by an external force so that the support member 51 is lowered in the height adjusting part 41 formed on the support piece 40. If it is located in the section (L), the lifting piece 30 is lowered to no longer support the support sphere 22c of the elastic stopper 22.

At this time, since the elastic support force formed between the elastic stopper 22 and the elevating piece 30 is lost, the operation wheel 20 is rotated in the forward direction by the closing force provided from the door closer 100, and consequently the fire door 200 ) Is closed.

In this embodiment, the support piece 40 is fixed to the main body 10, while the support member 51 disposed between the support piece 40 and the lifting piece 30 is fixed through the rolling piece 50. Thus, the support member 51 is alternatively positioned in the rising section H or the falling section L of the height adjusting portion 41 of the supporting piece 40 by the forward and reverse rotation of the rolling piece 50. .

Thus, in the door stopper 1 according to the present embodiment, a connection arm 21 connected to the operation arm 110 of the door closer 100 is formed on the main body 10 on which the support piece 40 is provided, and the elastic stopper is formed. An operating wheel 20 provided with a shaft 22 and an elevating piece 30 for elastically fixing the operating wheel 20 through an up and down elevating shaft 11 are installed to be stacked up and down, and the elevating piece 30 is provided. Between the support piece 40 and a rolling piece 50 having a plurality of supporting members 51 is installed, the operation wheel 20 depending on whether the lifting piece 30 of the lifting piece 30 by the forward and reverse rotation of the rolling piece 50 ) And the lifting piece 30 are alternatively set.

In the present invention, the lifting piece 30 is added to the door stopper 1 by adding an actuator 60 for rotating the rolling piece 50 in which the supporting members 51 are disposed in the forward or reverse direction by supplying current. By rotating the forward or reverse rotation of the rolling piece 50 to set the fixed door (200) fixed by the electric movement, so that all of the fire doors 200 installed on each floor of the common building by the supply of current It is structured so that closing is done collectively.

To this end, in the present embodiment, the link end 52 is formed to protrude from the edge of the rolling piece 50, the link end 52 is moved straight to the left or right direction, the link piece rolling piece 50 ), The actuator 60 is rotated at right angles in the forward or reverse direction.

Here, the actuator 60, the fixed bracket 61 is provided with a left and right conveying rail (61a) as shown in Figure 6; A slider 62 mounted to the left and right conveying rails 61a in a sliding structure and linked to the link end 51 of the rolling piece 50; And a forward and reverse motor 63 for providing an action force required for the straight forward movement of the slider 62, wherein the slider 62 is formed through a lead hole 62a, and the lead hole 62a. The ball screw 64 that is rotated in the forward or reverse direction by receiving the rotational force of the forward and reverse motor 63 is installed to pass through.

Referring to the drawings, gears 63a and 64a are respectively provided at the end of the ball screw 64 passing through the rotating shaft of the stationary motor 63 and the slider 62, and the ball screw 64 is the stationary motor 63. ) Is provided through the transmission gears 63a and 64a.

Accordingly, the actuator 60 according to the present embodiment moves the slider 62 in the left or right direction through a power conversion structure composed of the lead hole 62a of the slider 62 and the ball screw 64. The rolling piece 50 coupled with the slider 62 is rotated at right angles in the forward or reverse direction.

Thus, as shown in FIG. 7, in the state in which the slider 62 is moved in the right direction, the supporting member 51 provided on the rolling piece 50 is positioned at the rising section H of the supporting piece 40. Since the elevating piece 30 maintains the raised state to stably support the elastic stopper 22 of the operating wheel 20, the fire door 200 may be kept open through the fixing of the operating wheel 20. .

On the contrary, as shown in FIG. 8, in the state where the slider 61 is moved in the left direction, the supporting member 51 provided on the rolling piece 50 is positioned at the lowering section L of the supporting piece 40. At this time, the lifting piece 30 is lowered so that it no longer supports the elastic stopper of the operation wheel 20, the fire door 200 is closed through the rotation of the operation wheel (20).

On the other hand, in the present embodiment by providing an open damper 70 to assist the opening force of the fire door 200 in the door stopper 1, to support the fire door 200 in which the open damper 70 is normally closed. The user is configured to easily open the fire door 200 with a small force.

To this end, in the present embodiment, the actuator (60) is installed in the main body 10, the opening damper 70 for providing an opening force opposed to the closing force of the fire door 200 in the front and rear conveying structure, and the actuator Between the slider 62 of the 60 and the tail of the open damper 70, the setting rod 65 is provided in the left-right conveying structure.

As shown in the drawing, the open damper 70 is formed in a form in which the support 73, which is supported by the compression spring 72, protrudes from the open front surface of the housing 71 installed in the main body 10 in a forward and backward structure. do.

In addition, the opening damper 60 is provided with a forward spring 74 for holding the open damper 60 in the forward direction so that the open damper 60 has a propensity to move forward by the repulsive force of the forward spring 74. In addition, the setting rod 65 is provided with a positioning spring 66 for holding the setting rod 65 in the left direction, and the setting rod 65 has a tendency to move leftward by the positioning spring 66. .

Therefore, as shown in FIG. 7, when the setting rod 65 moves in the right direction by the support of the slider 62 moving in the right direction to support the rear end of the open damper 70, the open damper 70 is shown in FIG. 7. As shown in 7d, through the stable support by the setting rod 65, it provides an opening force opposite to the closing force of the fire door 200, and as shown in Figure 8 supports the setting rod 65 in the right direction When the slider 62 is moved leftward, the support of the open damper 70 is released by the setting rod 65, so that the open damper 70 does not support the fire door 200, which is closed as shown in FIG. Done.

However, in the door closer 1 according to the present embodiment, in a state in which the fire door 200 is closed and the damper 70 is retracted in a state where the setting rod 65 is moved to the left direction (when a fire occurs), the manager When the slider 62 is moved in the right direction to reset the device including the fixing of the operation wheel 20 through the lifting of the lifting piece 30, the slider 62 moves in the right direction and the retracted opening is opened. It may be damaged by physically interfering with the damper 70.

Of course, the manager opens the fire door installed in the apartment house to advance the open damper 70 by the forward spring 74, and then individually drive the actuator 60 to the slider 62 and the setting rod (65) By moving in the right direction, the damage of the set rod 65 due to the interference of the open damper 70 can be prevented, but this is very cumbersome and workability is significantly lowered.

In view of this, in the present embodiment, as shown in FIG. 9, the setting rod 65 is not configured as a single body, and the elastic spring 65c is disposed between the first rod member 65a and the second rod member 65b. Consists of this stretched stretched type.

Therefore, even if the slider 62 moves to the right as shown in FIG. 9B while the open damper 70 is retracted by the closing of the fire door 200 as illustrated in FIG. 9A, the setting rod 65 may have an elastic spring 65c. When the fire door 200 is opened and the open damper 70 is advanced as shown in FIG. 9C, the contracted setting rod 65 is extended and expanded by the expansion spring 65c to open the damper 70. Supports the tail of the stably.

Thus, the door stopper 1 according to the present embodiment provides the current to the actuator by remotely supplying the current regardless of the open or closed state of the fire door without the administrator opening and checking all the fire doors installed in the apartment complex. Direction, all door stoppers can be reset.

Figure 1 shows the installation state of the lifting door stopper proposed in the preferred embodiment of the present invention,

Figure 2 is an assembled state diagram showing the overall configuration of the lifting type door stopper proposed as a preferred embodiment in the present invention,

3 and 4 shows an elastic stopping structure formed between the operation wheel and the lifting piece by the lifting type door stopper proposed in the preferred embodiment of the present invention,

5 is a lifting door stopper proposed as a preferred embodiment in the present invention, showing the angle adjustment state of the lifting piece,

Figure 6 is a lifting door stopper proposed in the preferred embodiment of the present invention, the support piece and the rolling piece installed on the main body, and the actuator coupled to the forward and reverse rotation of the rolling piece and the coupling state of the open damper interlocking with the actuator Showing in detail,

7 and 8 are in the lifting type door stopper proposed in the preferred embodiment of the present invention, the fixed or unlocked state of the fire door by the forward and reverse rotation of the rolling piece by the drive of the actuator, and whether the support of the fire door of the open damper Is a state diagram showing

FIG. 9 is an enlarged view of an operation state of portion 'A' of FIG. 8C.

**** Explanation of symbols for the main parts of the drawing ****

1. Elevated Door Stopper

10. Main body 11. Shaft

20. Operating wheel 21. Connecting arm

22. Elastic stopper 22a. Charging Home

22b. Spring 22c. Support

23. Cover 23a. Protrusion

30. Platform 31. Fixing groove

32. Transfer groove 33. Rung groove

34. Retention member 34a. Adjusting bolt

34b. Home Groove

40. Support piece 41. Height adjustment

42. Rising section 43. Falling section

50. Cloud piece 51. Support member

52. Links

60. Actuator 61. Retention Bracket

61a. Feed rail 62. Slider

62a. Lead ball

63. Stationary motor 63a. Gear shift

64. Ball screw 64a. Gear shift

65. Load settings 65a. First rod member

65b. Second rod member 65c. Telescopic spring

66. Alignment Spring

70. Open damper 71. Housing

72. Compression Spring 73. Support

74. Forward Spring

100. Door closer 110. Operating arm

200. Fire Doors 210. Door Frames

Claims (6)

A main body provided with a support piece; An operating wheel having a connection arm connected to the operation arm of the door closer and an elastic stopper is provided, and an elevating piece for elastically fixing the operating wheel through up and down is axially installed to be stacked up and down, between the elevating piece and the supporting piece. There is a cloud piece is provided with a plurality of supporting members are disposed, so that the elastic wheel of the operation wheel and the lifting piece is set according to the support of the elevating piece through the support member by the forward and reverse rotation of the cloud piece, the link to the edge of the piece An end is formed to protrude, and the link end is provided with an actuator for moving in the left or right direction to rotate the rolling piece at right angles in the forward or reverse direction. The actuator includes a fixed bracket provided with a straight left and right conveying rails; A slider installed on the left and right transport rails in a sliding structure, the slider being linked with the link end of the rolling piece; And a forward and reverse motor for providing an action force required for the straight forward movement of the slider, wherein the slider has a lead hole penetrated therethrough, and the lead hole is provided with a rotational force of the forward and reverse motor so that the ball screw rotates in the forward or reverse direction. The slider is provided by converting the rotational force of the stationary motor into a straight feed force through a power conversion structure consisting of a lead hole and a ball screw, and moving in the left or right direction so that the cloud-binding piece of the link is right or right in the opposite direction. A door stopper having a simplified actuator structure, which is configured to rotate. According to claim 1, wherein the gear shaft is provided at the end of the rotation axis of the stationary motor and the ball screw passing through the slider, the ball screw is simplified, characterized in that configured to rotate by receiving the rotational force of the stationary motor through the transmission gear. Stopper having a modified actuator structure. According to claim 1, wherein the actuator is installed in the main body is provided with an open damper for providing an opening force opposed to the closing force of the fire door in the front and rear conveying structure, the setting rod is left and right between the slider of the actuator and the rear of the open damper. Installed in a transport structure, When the set rod is moved in the right direction by the support of the slider moved in the right direction to support the rear of the open damper, the open damper provides an opening force opposite to the closing force of the fire door through the support of the set rod. When the slider supporting the set rod in the right direction moves to the left, the support of the open damper by the set rod is released, and the open damper is configured to retreat without supporting the closed fire door. Having door stopper. According to claim 1, wherein the support piece is formed in the lower section and the rising section is partitioned, the support members disposed on the cloud piece is installed on the upper surface of the support piece formed so that the falling section and the rising section, When the slider of the actuator moves forward and the rolling piece rotates rightward in the forward direction, the supporting member is located in the lower section and does not support the lifting piece.If the slider of the actuator retracts and the rolling piece rotates in the right direction in the reverse direction, the supporting member is in the rising section. And supporting the elevating piece so as to elastically fix the operating arm and the elevating piece by a gripping action by the elastic stopper. According to claim 1 or 3, wherein the open damper is provided with a forward spring for holding the open damper in the forward direction, the open damper is configured to have a forward movement tendency by the elastic force of the forward spring, and the setting rod A door stopper having a simplified actuator structure, characterized in that a positioning spring for holding the setting rod in the left direction is disposed so that the setting rod has a tendency to move leftward by the positioning spring. The slide rod according to claim 3, wherein the set rod has a stretchable type in which elastic springs are disposed between the first rod member and the second rod member, and the slider is moved in the right direction while the damper is retracted by the closing of the fire door. Even if it moves, the setting rod is configured to prevent the setting rod from being damaged by the contraction of the expansion spring, and the setting rod is configured to support the rear end of the opening damper by the expansion of the expansion spring when the fire door is opened to move forward. Door stopper with a simplified actuator structure.

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