WO2016208966A1

WO2016208966A1 - Screen door having strong structure against human-pressing load

Info

Publication number: WO2016208966A1
Application number: PCT/KR2016/006626
Authority: WO
Inventors: 김현; 신판주
Original assignee: 한국교통연구원
Priority date: 2015-06-23
Filing date: 2016-06-22
Publication date: 2016-12-29
Also published as: KR20170000250A; EP3315376A1; JP2018518419A; KR101931796B1

Abstract

Disclosed is a screen door device which is a screen door device comprising: a pair of vertical frames extending in a y-axis direction; and a top side door lip and a bottom side door lip installed to move vertically along the pair of vertical frames, wherein the top side door lip includes a top side screen part disposed in an x-y plane, and a top side reinforcing part projecting from the top side screen part in a z-axis direction and extending along the x-axis direction.

Description

Screen door with strong structure under pressure load

The present invention relates to a screen door having a strong structure against pressure load.

In the case of a rope-type platform screen door (RPSD), a door leaf of a screen door is formed of a wire rope. Such a wire rope has a disadvantage in that a passenger's hand or an umbrella may invade between the wire ropes, and thus there is a risk that the wire rope and the platform are not completely blocked.

In order to solve this problem, studies to completely block the track and platform by applying a hard material such as a conventional platform screen door (PSD) using a plate-like material such as tempered plastic or tempered glass are ongoing. Has been progressed.

However, in order to apply the hard member, it is necessary to satisfy the pressure load condition for the pressure load, which is a horizontal force applied to the door leaf of the screen door by an individual or a crowd. However, in order to satisfy the pressure load condition, the horizontal width of the hard member must be widened, and as a result, the weight becomes heavy. If the pressure load condition is not satisfied, the hard member is bent or wobbly.

In the present invention, it is intended to provide a screen door that is light and has a strong structure against pressure load.

Screen door device provided according to an aspect of the present invention, a pair of vertical frame extending in the y-axis direction; And an upper door leaf and a lower door leaf installed to vertically move along the pair of vertical frames. The upper door leaf, the upper screen portion disposed in the x-y plane; And an upper reinforcing part protruding in the z-axis direction from the upper screen part and extending in the x-axis direction.

At this time, the lower door leaf, the lower screen portion disposed in the x-y plane; And a lower reinforcing part protruding from the lower screen part in the z-axis direction and extending in the x-axis direction.

In this case, when the screen door device is closed, the lower door leaf may be positioned below the upper door leaf, and when the screen door device is opened, the lower door leaf may overlap the upper door leaf.

In this case, when the screen door device is closed, when the force is applied to the upper door leaf in the z-axis direction, the force may be distributed through the lower reinforcing portion.

In this case, the upper door leaf is fixed to the upper screen portion further comprises a rail extending in the y-axis direction, the lower door leaf is coupled to the rail is coupled to the rail guided along the rail It may further include wealth.

In this case, the upper reinforcement portion protrudes from an upper portion of the upper screen portion, the lower reinforcement portion protrudes from an upper portion of the lower screen portion, and the upper door leaf protrudes from the lower portion of the upper screen portion in the z-axis direction. And a second upper reinforcement part extending along the x-axis direction, wherein the lower door leaf protrudes from the lower portion of the lower screen portion in the z-axis direction and extends along the x-axis direction. It may further include a reinforcement.

At this time, when the screen door device is closed, the lower reinforcement part is overlapped with the second upper reinforcement part, and when the force is applied to the upper door leaf in the z-axis direction, the force is applied to the second upper reinforcement part. Through the portion may be to be distributed to the lower reinforcing portion.

In this case, when the screen door device is closed, when a force is applied to the upper door leaf in the z-axis direction, the lower end of the upper door leaf may be distributed to the lower door leaf so that the force is distributed to the lower door leaf. It may be adapted to contact the top end.

The upper reinforcing part and the lower reinforcing part may be the first upper reinforcing part and the first lower reinforcing part described with reference to FIGS. 8 to 12, respectively.

According to the present invention, it is possible to provide a light screen door that can prevent the bending and whipping of the door leaf by the pressure.

1 and 2 are simplified views showing the external structure of the screen door according to one embodiment.

3 and 4 are diagrams for describing a detailed internal structure of the screen door according to an embodiment.

5 and 6 are views illustrating a positional relationship between an upper door leaf and a lower door leaf in the screen door according to one embodiment.

7 is a view for explaining the structure of the upper-mounted portion and the lower-mounted portion shown in FIGS. 3 to 6 and the movement principle of the upper door riff and the lower door riff.

8 is a simplified view showing the external structure of the screen door according to an embodiment of the present invention.

FIG. 9 is a view for explaining in detail the upper door leaf and the lower door leaf shown in FIG.

FIG. 10 is a side cross-sectional view illustrating a coupling structure of the upper door leaf and the lower door leaf shown in FIG. 8.

11 and 12 show a modified example of the structure of the door leaf shown in FIGS. 9 and 10, respectively.

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention will be described. However, the present invention is not limited to the embodiments described herein and may be implemented in various other forms. The terminology used herein is for the purpose of understanding the embodiments and is not intended to limit the scope of the invention. Also, the singular forms used below include the plural forms unless the phrases clearly indicate the opposite meanings.

1 and 2 are simplified views showing the external structure of the screen door 100 according to one embodiment. FIG. 1 shows a state where the upper door leaf 1 and the lower door leaf 2 are closed, and FIG. 2 shows a state where the upper door leaf 1 and the lower door leaf 2 are opened.

As shown in FIG. 1 and FIG. 2, the screen door 100 according to the embodiment may include an upper door leaf 1 and a lower door leaf 2 which are opened and closed up and down. In one embodiment, the upper door leaf 1 and the lower door leaf 2 may be made of a plate-like member.

The screen door 100 extends in the vertical direction and has a left vertical frame 501 and a right vertical frame 502 fixed to the ground, and a top and right vertical frame 502 of the left vertical frame 501. It may further include a horizontal frame 503 connecting the top of each other. The left and right sides of the upper door leaf 1 and the lower door leaf 2 may be coupled to the left vertical frame 501 and the right vertical frame 502, respectively.

At this time, in a state where both the upper door leaf 1 and the lower door leaf 2 are closed, the lower door leaf 2 is located lower than the upper door leaf 1 as shown in FIG. (1) and the lower door leaf (2) may not be overlapped with each other.

In the state where both the upper door leaf 1 and the lower door leaf 2 are open, the upper door leaf 1 and the lower door leaf 2 may overlap each other as shown in FIG. 2.

Hereinafter, the screen door 100 according to an embodiment will be described in more detail with reference to FIGS. 3 to 6.

3 and 4 are views for explaining a specific internal structure of the screen door 100 according to an embodiment. 3 shows a state in which the upper door leaf 1 and the lower door leaf 2 are closed, and FIG. 4 shows a state in which the upper door leaf 1 and the lower door leaf 2 are open.

5 and 6 are views for explaining the mutual arrangement relationship between the upper door leaf 1 and the lower door leaf 2 in the screen door 100 according to an embodiment.

The upper door leaf 1 may include an upper screen portion 13 disposed in the x-y plane, and upper-mounting

portions

101 and 102 fixedly connected to both left and right ends of the upper screen portion 13.

The lower door leaf 2 may include a lower screen part 23 disposed in the x-y plane, and

lower mounting parts

201 and 202 fixedly connected to both left and right ends of the lower screen part 23.

Each

vertical frame

501, 502 may be provided with

screws

311, 312 extending in the vertical direction and rotatably installed on the

vertical frames

501, 502.

At this time, the second motor (for example, the lower end) of the left vertical frame 501 and the right vertical frame 502, the rotary motor connected to the lower end of the screw (311, 312) to rotate the screws (311, 312), respectively ( 301 and 302 may be installed.

In addition,

screw coupling parts

321 and 322 which are configured to support the

screws

311 and 312 may be installed at first portions (eg, upper ends) of the left vertical frame 501 and the right vertical frame 502. The

screw coupling parts

321 and 322 may include a component such as a bearing.

That is, the left screw coupling portion 321 for supporting the left screw 311 is installed at the upper end of the left vertical frame 501, the left rotation motor 301 is installed at the lower end of the left vertical frame 501. The left screw 311 may be coupled in a state extending in a vertical direction to one side of the left rotating motor 301 so as to be rotated by the left rotating motor 301.

The right screw coupling part 322 for supporting the right screw 312 is installed at the upper end of the right vertical frame 502, and the right rotating motor 302 is installed at the lower end of the right vertical frame 502. The right screw 312 may be coupled in a state extending in a vertical direction to one side of the right rotating motor 302 so as to be rotated by the right rotating motor 302.

Therefore, when the

rotary motors

301 and 302 rotate, the

screws

311 and 312 may rotate while maintaining a constant position with respect to the

vertical frames

501 and 502.

The

rotary motors

301 and 302 may be connected to separate controllers not shown, and may operate in synchronization with each other by the controllers.

The vertical

movable parts

41 and 42 may be movably coupled to one portion of the

screws

311 and 312. The vertical

movable parts

41 and 42 are able to move along the extension direction of the

screws

311 and 312 as the

screws

311 and 312 rotate. To this end, the vertical

movable parts

41 and 42 may have protrusions coupled to the threads of the

screws

311 and 312.

Meanwhile, the

upper rails

121 and 122 and the

lower rails

221 and 222 may be fixedly coupled to the left vertical frame 501 and the right vertical frame 502. The

lower rails

221 and 222 may be longer in the vertical direction than the

upper rails

121 and 122.

Each of the

upper rails

121 and 122 may be movably coupled to the upper

end moving parts

111 and 112 to move up and down. To this end, the

upper end portions

111 and 112 are coupled to the

upper rails

121 and 122 to slide, or the

upper end portions

111 and 112 are coupled to the

upper rails

121 and 122 by bearings. It may be.

In addition, lower

end moving parts

211 and 212 may be guided up and down to each

lower rail

221 and 222 to be movable. To this end, the lower

movable parts

211 and 212 are coupled to the sliding motion with respect to the

lower rails

221 and 222, or the lower

movable parts

211 and 212 are coupled to the

lower rails

221 and 222 by bearings. It may be.

In this case, the top-mounting

portions

101 and 102 located at both ends of the left and right ends of the upper door leaf 1 may be fixed to the

upper end portions

111 and 112, respectively. Accordingly, the upper door leaf 1 may move along the

upper rails

121 and 122.

In addition, lower-mounting

parts

201 and 202 located at both ends of left and right sides of the lower door leaf 2 may be fixed to the lower

end moving parts

211 and 212, respectively. Accordingly, the lower door leaf 2 may move along the

lower rails

221 and 222.

In this case, the lower

movable parts

211 and 212 may be coupled to the vertical

movable parts

41 and 42. Accordingly, when the vertical

movable parts

41 and 42 move in the vertical direction, the lower

movable parts

211 and 212 also move together in the vertical direction.

As a result, when the

rotary motors

301 and 302 rotate, the

screws

311 and 312 rotate, and when the

screws

311 and 312 rotate, the vertical

movable parts

41 and 42 move in the vertical direction. When the 41 and 42 move in the vertical direction, the lower

end moving parts

211 and 212 and the lower door leaf 2 connected thereto move in the vertical direction.

As will be described later with reference to FIG. 7, in one embodiment the lower door leaf 2 is coupled to the upper door leaf 1 in a predetermined manner. When the lower door leaf 2 moves in the vertical direction, the upper door leaf 1 may move in the vertical direction at a lower speed than the lower door leaf 2.

7 is a structure in which the upper-mounting

portions

101 and 102 and the lower-mounting

portions

201 and 202 shown in FIGS. 3 to 6 are coupled to each other, and the upper door leaf 1 is driven by the lower door leaf 2. It is a figure for explaining the principle of receiving and moving.

As shown in FIG. 7, the

trolley shafts

141 and 142 for the

trolleys

131 and 132 are formed at the upper and lower ends of the upper-mounting

portions

101 and 102, respectively. The pair of

pulleys

131 and 132 may be rotatably coupled to the pair of

pulley shafts

141 and 142. The belt 140 may be coupled to the outer circumferential surfaces of the pair of

pulleys

131 and 132.

At this time, the first coupling portion 51 is formed at one point of the bottom-mounting

portions

201 and 202, and the first coupling portion 51 is a part (second coupling portion) 52 of the belt 140. It can be fixed and coupled to.

The principle of movement of the top-mounting

portions

101 and 102 and the bottom-mounting

portions

201 and 202 will now be described.

When the

screws

311 and 312 are rotated by the driving of the

rotary motors

301 and 302, the vertical

movable parts

41 and 42 which are movably coupled to the

screws

311 and 312 are movable up and down. .

At this time, the lower

movable parts

211 and 212 are fixedly coupled to the vertical

movable parts

41 and 42, respectively, and the lower-mounting

parts

201 and 202 are fixedly coupled to the lower

movable parts

211 and 212, respectively. Since the portion 52 of the belt 52 is fixedly coupled to the first coupling portion 51 of the mounting

portions

201 and 202, the upper end coupled to the belt 52 through the

pulleys

131 and 132. The mounting

portions

101 and 102 can also move in the same direction as the lower mounting

portions

201 and 202. That is, as the lower door leaf 2 moves in the vertical direction, the upper door leaf 1 can also move in the same direction.

Meanwhile, in the case of the existing RPSD, the door leaf of the screen door is composed of a wire rope. In the case of the wire rope, passengers or umbrellas may invade between the wire ropes, and thus there is a risk that the tracks and the platform are not completely blocked because the risk factors remain.

In order to improve this problem, studies have been continuously conducted to completely block tracks and platforms by applying a hard member such as a PSD to a screen door. However, in order to apply a hard member, it is necessary to satisfy the pressure load, for example, 100kgf condition, which is a condition of RPSD structural analysis, but it is difficult to satisfy it while maintaining a light weight. As a result, when a large number of people are distributed in the platform of the platform or subway, there is a problem that the door leaf is bent or swayed by the people pressing the door leaf of the screen door.

According to one embodiment of the invention, it is possible to provide a screen door that can withstand the pressure load.

Hereinafter, the screen door 200 according to an embodiment of the present invention will be described with reference to FIGS. 8 to 10.

8 is a simplified view showing the external structure of the screen door 200 according to an embodiment of the present invention.

FIG. 9 is a view for explaining the upper door leaf 3 and the lower door leaf 4 shown in FIG. 8 in detail.

FIG. 10 is a side cross-sectional view for explaining the coupling structure of the upper door leaf 3 and the lower door leaf 4 shown in FIG.

The screen door 200 according to an embodiment of the present invention is the upper door leaf 3 and the lower door leaf 4, which is opened and closed up and down, the left vertical frame 501, the right vertical frame 502, and the horizontal frame ( 503). In this case, specific components, structures, and driving methods of the left vertical frame 501, the right vertical frame 502, and the horizontal frame 503 may be implemented in the same manner as in the exemplary embodiment described with reference to FIGS. 1 to 7. have.

The upper door leaf 3 is fixed to the upper screen part 13 and the upper screen part 13 disposed in the xy plane and protrudes in the + z direction to extend along the x-axis direction (the first upper reinforcement part ( 11) a second upper reinforcement part 12 fixed to the lower end of the upper screen part 13 and protruding in the + z direction and extending along the x axis direction, and one or more rails extending in the y axis direction ( 15).

The one or more rails 15 extend in the y-axis direction and may be fixedly disposed on the first upper reinforcement part 11 and the second upper reinforcement part 12 with respect to the upper screen part 13. .

In another modified embodiment, one or more rails 15 may be connected to different points of the upper screen portion 13 rather than the first upper reinforcement portion 11 and the second upper reinforcement portion 12.

In this case, when one or more rails 15 are provided in plural, the rails 15 may be arranged to maintain a predetermined distance from each other.

The lower door leaf 4 is fixed to the upper portion of the lower screen portion 23 and the lower screen portion 23 disposed in the xy plane and protrudes in the + z direction to extend along the x-axis direction (the first lower reinforcement portion ( 21), the second lower reinforcing portion 22 is fixed to the lower end of the lower screen portion 23 and protrudes in the + z direction and extends along the x-axis direction, and coupled to the upper end of the first lower reinforcing portion 21. One or more rail couplings 25 may be included.

In another modified embodiment, the second lower reinforcement part 22 may protrude in the -z direction.

In another modified embodiment, the first lower reinforcement part 21 may protrude in the -z direction. In this case, it can be understood that the distance in the z direction between the upper screen portion 13 and the lower screen portion 23 will increase than that shown in FIG. 10.

One or more rail coupling portions 25 may be movably coupled to the rail 15 to be guided along the rail 15 installed in the upper door leaf 3.

In one embodiment, the rail coupling portion 25 may be fixedly coupled to the first lower reinforcement portion 21.

At this time, in one embodiment of the present invention, the upper screen portion 13 and the lower screen portion 14 may be made of a member such as a plate-like member. The plate-shaped member may be made of tempered glass, reinforced synthetic resin, or cloth. However, the scope of the present invention is not limited thereto, and in the modified embodiment of the present invention, the upper screen part 13 and / or the lower screen part 14 are provided with

reinforcement parts

11, 12, 21, and 22. It may be made of a frame having a structure that can be made and rope-like members installed in the frame.

At this time, as described in one embodiment, when the screw (311, 312) is rotated by the drive of the rotary motor (301, 302), the vertical movable portion (41, 42) which is movably coupled to the screw (311, 312) ) Is able to move up and down. At this time, the lower door leaf 4 is movable up and down along the rail 15 provided in the upper door leaf 3.

On the other hand, when a force is applied to the upper door leaf 3 in the + z-axis direction in a state where both the upper door leaf 3 and the lower door leaf 4 are closed, the first upper reinforcing part 11 ) And the second upper reinforcement part 12. In addition, the second upper reinforcement part 12 may transmit a force to the first lower reinforcement part 21 through the rail coupling part 25. Therefore, the force may be distributed through the first lower reinforcing part 21.

When the above-mentioned pressure load is applied to the upper door leaf 3, the applied pressure load is the lower screen portion 23 and the first connected to the first lower reinforcement portion 21 and the first lower reinforcement portion 21. 2 can be dispersed in the lower reinforcing portion 22, there is an advantage that can effectively distribute the pressure load.

Components indicated by

reference numerals

603, 604, 611, 612, 613 621, 622, and 623 in Figs. 11 and 12 are

reference numerals

3, 4, 11, 12, 13, 21, 22 in Figs. 9 and 7, respectively. , Corresponding to the component indicated by 23.

11 and 12, components of the rail 15 and the rail coupling portion 25 shown in FIGS. 9 and 7 are removed.

In the example of FIGS. 11 and 12, the first lower reinforcement part 621 overlaps with the second upper reinforcement part 612 with both the upper door leaf 603 and the lower door leaf 604 closed. At this time, the -z end portion of the first lower reinforcement portion 621 and the + z end portion of the second upper reinforcement portion 612 may have shapes corresponding to each other.

According to the above configuration, when a force is applied to the upper door leaf 603 in the + z direction, the force may be transmitted and distributed to the first lower reinforcing part 621 through the second upper reinforcing part 612. have. As a result, the warping phenomenon in the + z direction of the upper door leaf 603 can be alleviated.

11 and 12, when the lower door leaf 604 moves in the vertical direction, one surface of the lower screen portion 623 in the −z direction does not touch the second upper reinforcement portion 612. The lower reinforcing part 621 may further protrude in the -z axis direction with respect to the one surface of the lower screen part 623. That is, one surface of the lower screen portion 623 in the −z direction may be disposed on the + z side more than one end of the first lower reinforcement portion 621 in the −z axis direction.

In FIG. 12, the + z end of the second upper reinforcement part 612 and the −z end of the first lower reinforcement part 621 are illustrated as being spaced apart from each other. The lower reinforcing part 621 is shown for convenience in order to distinguish them from each other. In an optimal embodiment, the + z end of the second upper reinforcement 612 and the -z end of the first lower reinforcement 621 may be in contact with each other while the screen door is closed.

In addition, the + z end portion of the second upper reinforcement portion 612 may have a shape that protrudes further in the + z direction as it goes downward, and the −z end portion of the first lower reinforcement portion 621 is upward. It may have a shape that is further protruded in the -z direction. In this case, the second upper reinforcement part 612 is caught by the first lower reinforcement part 621. Therefore, the lower door leaf 603 can be prevented from excessively descending downward.

In the above-described embodiments of the present invention, when the force is applied to the

upper door leafs

3 and 603 in the + z direction, the warpage phenomenon of the

upper door leafs

3 and 603 in the + z direction is basically applied. The effect to be alleviated is because the

reinforcement parts

11, 12, 611, and 612 provided at the upper end or the lower end of the

upper door leaf

3, 603 protrude in the z direction. The bending phenomenon can be further alleviated in that the force can be dispersed by the

reinforcement parts

21, 22, 621, and 622 provided in the

lower door reefs

4 and 604.

Modified Embodiment of Driving Device

On the other hand, the Republic of Korea Patent Publication No. 10-2015-0138830 (2015.12.10), Figure 4, when closed, is spaced apart from each other in the vertical direction, and when opened, 'upper-screen door' and 'lower' The configuration of 'screen door' is disclosed. In this case, the 'upper-screen door' and the 'lower-screen door' are concepts corresponding to the 'upper doorleaf' and 'lower doorleaf' of the present disclosure, respectively.

In FIG. 7 of the present specification, an example of a configuration in which the upper door leaf moves more slowly than the lower door leaf has been described. However, this configuration can be modified using the configuration described in Figure 4 of the Republic of Korea Patent Publication No. 10-2015-0138830 (2015.12.10).

That is, in FIGS. 3 and 4 of the Republic of Korea Patent Publication No. 10-2015-0138830 (2015.12.10) 'upper-screen door' and 'lower-screen door' are the moving parts that are distinguished from each other 'upper-vertical moving part' and It is connected to the 'bottom-vertical moving part', and the 'bottom-vertical moving part' is driven by the 'ball screw'. The 'upper-vertical moving part' is driven by a 'connection member' receiving power from the 'ball screw' through a 'power transmission gear assembly' connected to the 'ball screw'. Here, the 'ball screw' may be viewed as a concept corresponding to the 'left screw 311' or 'right screw 312' of the present specification.

The driving unit of the screen door device disclosed herein may be modified using the configuration disclosed in FIG. 4 of Republic of Korea Patent Publication No. 10-2015-0138830 (2015.12.10). That is, the 'lower door leaf' described in the present specification may be driven in the vertical direction by the 'ball screw'. In addition, the upper door leaf of the present specification may be driven in a vertical direction by a 'connection member' receiving power from the 'ball screw' through a 'power transmission gear assembly' connected to the 'ball screw'. In this case, the 'connection member' may be a 'second ball screw' which is a member of the same type as the 'ball screw'. And the lower end of the 'ball screw' can be directly connected to the rotating motor to rotate. At this time, by controlling the rotation ratio of the 'ball screw' and the 'second ball screw' it is possible to control the relative movement speed of the 'lower door leaf' and 'upper door leaf'. Alternatively, by adjusting the gear ratio configuration of the 'power transmission gear assembly' it is possible to control the relative movement speed of the 'lower door leaf' and the 'upper door leaf'. According to the embodiment, the 'ball screw' may be made longer or shorter than the 'second ball screw'. The 'ball screw' may be configured such that the moving speed of the door leaf connected to the longer screw of the 'second ball screw' is faster than the moving speed of the door leaf connected to the shorter screw.

For the reasons described above, it can be understood that the configuration disclosed in Republic of Korea Patent Publication No. 10-2015-0138830 (2015.12.10) is incorporated herein by reference.

On the other hand, it can be understood that the idea of 'screen door having a strong structure against pressure load' presented in the claims of the present specification can be applied to all of the various structures, such as the specific embodiments of the power transmission structure described above. .

In the present specification, the "screen door" may be referred to as a "screen door device" or a "platform screen door."

By using the embodiments of the present invention described above, those belonging to the technical field of the present invention will be able to easily make various changes and modifications without departing from the essential characteristics of the present invention. The content of each claim in the claims may be combined in another claim without citations within the scope of the claims.

[Description of the code]

100, 200: screen door

1, 3, 603:

upper door leaf

2, 4, 604: lower door leaf

11, 611: first upper reinforcing part 12, 612: second upper reinforcing part

13 and 613: upper screen portion 15: rail

21, 621: first lower reinforcement portion 22, 622: second lower reinforcement portion

23, 623: lower screen portion 25: rail coupling portion

41: left vertical moving part 42: right vertical moving part

51: first coupling portion 52: second coupling portion

101: upper left-mounting portion 102: upper right-mounting portion

111: upper left moving part 112: upper right moving part

121: upper left rail 122: upper right rail

131: upper pulley 132: lower pulley

140: belt 141: upper rotating shaft

142: lower rotating shaft

201: Lower left-hand part 202: Lower right-hand part

211: lower left moving part 212: lower right moving part

221: lower left rail 222: lower right rail

301: left rotation motor 302: right rotation motor

311: left side screw 312: right side screw

321: left screw coupling portion 322: right screw coupling portion

501: left vertical frame 502: right vertical frame

503: horizontal frame

Claims

a pair of vertical frames extending in the y-axis direction; And an upper door leaf and a lower door leaf installed to vertically move along the pair of vertical frames.

The upper door leaf, the upper screen portion disposed in the x-y plane; And an upper reinforcing part protruding in the z-axis direction from the upper screen part and extending in the x-axis direction.

Screen door device.
The lower door leaf of claim 1, further comprising: a lower screen unit disposed on an x-y plane; And a lower reinforcing part protruding from the lower screen part in the z-axis direction and extending in the x-axis direction.
The lower door riff is positioned below the upper door riff when the screen door device is closed, and the lower door riff overlaps the upper door riff when the screen door device is opened. Screen door device.
The method of claim 2,

Characterized in that the force is distributed through the lower reinforcement when the screen door device is closed, when a force is applied in the z-axis direction with respect to the upper door leaf.

Screen door device.
The method of claim 1,

The upper door leaf further includes a rail fixed to the upper screen part and extending in the y-axis direction,

The lower door leaf further includes a rail coupling part coupled to the rail and guided along the rail.

Screen door device.
The method of claim 2,

The upper reinforcing portion protrudes from an upper portion of the upper screen portion,

The lower reinforcement portion protrudes from an upper portion of the lower screen portion,

The upper door leaf further includes a second upper reinforcing part protruding from the lower portion of the upper screen part in the z-axis direction and extending along the x-axis direction.

The lower door leaf further includes a second lower reinforcing part protruding from the lower portion of the lower screen part in the z-axis direction and extending along the x-axis direction.

Screen door device.
The method of claim 6,

When the screen door device is closed, the lower reinforcing portion is to overlap the second upper reinforcing portion,

When a force is applied to the upper door leaf in the z-axis direction, the force is distributed to the lower reinforcing part through the second upper reinforcing part,

Screen door device.
The method of claim 1,

When the screen door device is closed,

When a force is applied to the upper door leaf in the z-axis direction, the lower end portion of the upper door leaf comes into contact with the upper end portion of the lower door leaf so that the force can be distributed to the lower door leaf.

Screen door device.