KR101740469B1

KR101740469B1 - Vertically moving screen door with light weight

Info

Publication number: KR101740469B1
Application number: KR1020150077979A
Authority: KR
Inventors: 김현; 신판주
Original assignee: 한국교통연구원
Priority date: 2014-06-02
Filing date: 2015-06-02
Publication date: 2017-06-15
Also published as: KR20150138830A

Abstract

A screen door apparatus comprising: a left vertical frame, a central vertical frame, and a right vertical frame; A center-ball screw rotatably installed in the central vertical frame; And the right-side door, and is fixedly coupled to the left end of the right door. When the center-ball screw is rotated, the center-ball screw is moved in the vertical direction along the thread of the center- And a center-to-vertical motion coupled to the center-vertically moving portion.

Description

[0001] The present invention relates to a lightweight vertical screen door,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical opening and closing type screen door, and relates to a structure of a screen door having a structure for lightening.

A structure of a screen door for protecting pedestrians or vehicle passengers from the vehicle is disclosed. The screen door has a type that is opened and closed in the left and right direction and a type that is opened and closed in the vertical direction.

In a screen door that is horizontally opened and closed, a driving device that provides a force to overcome the frictional force when the screen door moves in the lateral direction can be used. However, since the vertically open and closed screen door must move in the vertical direction, the force of gravity on the screen door must be further considered. To counterbalance this gravitational force, a counterbalance can be installed in a vertically opening screen door. Therefore, there is a problem that the screen door which is opened / closed vertically may be heavier than the screen door which is opened / closed horizontally.
As a prior art document of the present invention, Korean Registered Patent Publication No. 10-1391453 of Korea Transportation Research Institute is available. The balance weight may correspond to the weight 121 of the prior art document.

The present invention provides a structure for reducing the weight of the vertical opening-closing type screen door.

A screen door device provided according to an aspect of the present invention includes a left vertical frame 2 on which a left rail part 310 is formed, a central vertical part 320 formed with a first central rail part 320 and a second central rail part 330, A right vertical frame 4 formed with a frame 3 and a right rail part 340; A central-ball screw (22) extending in the vertical direction and rotatably installed in the central vertical frame; A motor (35) fixedly coupled to the center vertical frame to rotate the center-ball screw; A left upper-screen door 1811 and a left lower-screen door 1812 both ends of which are slidably coupled to the left rail and the first center rail so as to be able to move in the vertical direction; A right upper-screen door 1821 and a right lower-screen door 1822 both ends of which are slidably coupled to the right and left second rail portions so as to be movable in the vertical direction; And a right upper end of the screen door, and is fixedly coupled to a left end of the right upper-screen door. When the center-ball screw is rotated, the right- And a central-vertical moving part 70 coupled to the center-ball screw to move the center-ball screw.

At this time, the screen door device includes a left-hand ball screw 21 extending in the vertical direction and rotatably installed in the left vertical frame; A right-side ball screw 23 extending in the vertical direction and rotatably installed in the right side vertical frame; And a power transmission assembly installed in the screen door device to convert the rotational force of the center-ball screw into the rotational force of the left-side ball screw and the right-side ball screw.

The screen door device is fixedly coupled to the left end of the left lower-screen door, and when the left-hand ball screw is rotated, the left-hand ball screw is moved in the vertical direction along the thread of the left- A left-vertical moving part 73 which is coupled; And a right-side screw connected to the right-side screw so as to move in the vertical direction along the thread of the right-side screw when the right-side screw is rotated, (75).

Here, the power transmission assembly includes a left-power transmission gear assembly 31, a center-power transmission gear assembly (not shown) installed at each upper end of the left-side ball screw, the center-ball screw, 32 and right-power transmission gear assembly 33; And a left horizontal-shaft (24) connected between the left-power transmission gear assembly and the center-power transmission gear assembly, and a right-side power transmission gear assembly coupled between the center- And a right horizontal-shaft 25. At this time, by driving the center-power transmission gear assembly, the left-side power transmission gear assembly and the right-side power transmission gear assembly may be driven by rotating the left side-shaft and the right side-shaft.

Here, the left rail, the right rail, the first central rail, and the second central rail each have a single rail (1312, 1412, 1311, 1411) and a single rail 1422, 1321, and 1421, respectively.

At this time, the left upper-screen door and the right upper-screen door are moved in the vertical direction along the short rail, and the left lower-screen door and the right lower- As shown in FIG.

Meanwhile, the screen door apparatus provided according to another aspect of the present invention includes a left side screen door 811, 812 which is vertically opened and closed, and a left side drive assembly which moves the left side screen door up and down A door portion 91; A right screen door unit 92 including one or more right screen doors 821 and 822 opened and closed in the up and down direction and a right drive assembly for moving the right screen door up and down; And a central horizontal frame (16) that includes a drive device (500) and a power transmission connection (200) rotated by the drive device and connects the upper end of the left screen door part and the upper end of the right screen door part to each other, . &Lt; / RTI >

At this time, the power transmission connector is connected to the left drive assembly and the right drive assembly so that the left drive assembly and the right drive assembly transmit power for moving the left screen door and the right screen door up and down, Can be connected.

The left screen door unit includes a pair of left vertical frames 11 and 12 installed at left and right ends of the left screen door to guide the left screen door to move up and down, And a left horizontal frame 15 connecting the upper ends to each other. The right screen door portion includes a pair of right vertical frames (13, 14) installed at left and right ends of the right screen door to guide the right screen door to move up and down, and a pair of right vertical frames And a right horizontal frame 17 connecting the right horizontal frames 17 to each other.

At this time, the left vertical frame includes at least one left rail 311, 312, 321, 322 for guiding the left screen door to move up and down, And may include one or more right rails 411, 412, 421, 422 for guiding movement.

At this time, the left screen door and the right screen door may include upper-screen doors 811 and 821 and lower-screen doors 812 and 822 disposed under the upper-screen doors, respectively.

At this time, the left drive assembly and the right drive assembly each include one or more long belts (171, 172, 271, 272) coupled to the lower-screen door to raise and lower the lower- ) And one or more large belts (131, 132, 1131, 1132, 231, 232, 2231, 2232) for rotating the long belt; And one or more short belts (181, 182, 281, 282) coupled to the upper-screen door to raise and lower the upper-screen door to a second speed that is slower than the first speed, One or more small vehicles 141, 142, 1141, 1142, 241, 242, 2241, and 2242 may be provided.

Meanwhile, the screen door apparatus provided according to another aspect of the present invention includes at least one left screen door 811, 812 which is opened and closed in the up and down direction, a left driving assembly for moving the left screen door up and down, A left screen door portion 91 provided at left and right ends of the door and including a pair of left vertical frames 11, 12 for guiding the left screen door to move up and down; A right drive assembly for vertically moving the right screen door and a right drive assembly for moving the right screen door upward and downward, A right screen door 92 including a pair of right vertical frames 13,14; And a power transmission connector (200) rotated by the driving device, wherein a pair of left vertical frames and horizontal frames (15, 17) arranged on top of the pair of right vertical frames ).

According to the present invention, since two adjacent vertical opening and closing type screen doors are driven by one driving device, the vertical opening type screen door system can be lightened.

1 is a perspective view showing a state where a landing screen door according to a first embodiment of the present invention is installed.
2 is a front view of the internal structure of the landing screen door according to the first embodiment of the present invention.
3 is a top view of the landing screen door shown in Fig. 2, viewed from top to bottom.
FIG. 4 is a front view of an internal structure of a landing screen door according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein, but 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 present invention. Also, the singular forms as used below include plural forms unless the phrases expressly have the opposite meaning.

&Lt; First Embodiment - Landing screen door using power transmission belt >

A platform 60 is provided beside the line 50 through which the train passes. Safety fences 40 for preventing the passengers from falling down to the railway 50 may be provided on the landing platform 60 at regular intervals. The safety fence 40 can be disposed between the positions where the doors of the train are located when the trains are stopped. There is a risk that the passenger falls on the railway 50 in a space without the safety fence 40. [

In order to install the left and right screen doors in the platform 60, the safety fences 40 must be removed. This is because the left and right opening-type screen doors must invade the space occupied by the safety fence 40 when the screen door is opened. Therefore, the left and right opening type screen doors are unsuitable for installing while maintaining the safety fence 40 as it is.

According to one embodiment of the present invention, the elevation screen door 1 can be installed on the landing platform 60 while the safety fence 40 is maintained.

1 is a perspective view showing a state where a landing screen door 1 according to a first embodiment of the present invention is installed.

The landing screen door 1 according to the first embodiment of the present invention includes one or more left screen doors 811 and 812 that are opened and closed vertically and a left drive assembly 820 that moves the left screen doors 811 and 812 up and down And a left side screen door unit 91 including a left side screen door. The left screen doors 811 and 812 may be plate-shaped members or rope-shaped members. In one embodiment, the left upper-screen door 811 located at the upper portion is formed of a plate member, and the lower left-screen door 812 located at the lower portion may be formed of a rope-shaped member. The rope-like member means that one end of the rope is fixed to the first vertical frame of a pair of vertically standing vertical frames, and the tension of the rope is strongly formed in a state where the other end of the rope is fixed to the second vertical frame can do.

The platform screen door 1 includes a right screen door 821 and 822 that are vertically opened and closed and a right drive assembly that moves the right screen doors 821 and 822 up and down, (Not shown). The right screen doors 821, 822 may be formed of a plate-like member or a rope-like member. In one embodiment, the upper right-side screen door 821, which is located at the upper part of the screen, is made of a plate member, and the lower right-side screen door 822 located at the lower side is made of a rope-

The platform screen door 1 may include a central horizontal frame 16 connecting the upper end of the left screen door portion 91 and the upper end of the right screen door portion 92 to each other.

Hereinafter, the landing screen door 1 according to the first embodiment of the present invention will be described in more detail with reference to FIGS. 2 and 3. FIG.

2 is a front view of the internal structure of the landing screen door 1 according to the first embodiment of the present invention.

Fig. 3 shows a top view of the landing screen door 1 shown in Fig. 2, viewed from top to bottom.

The central horizontal frame 16 may be provided with a drive unit 500 for rotating the drive shaft 501. The drive device 500 may be, for example, a rotary motor, and the drive shaft 501 may be, for example, a rotary shaft of the rotary motor.

The central horizontal frame 16 may be provided with a power transmission belt 200 that rotates in engagement with the drive shaft 501. The power transmission belt 200 may be composed of a chain instead of a belt. The power transmission belt 200 may be replaced with a power transmission connector, which is a superordinate concept including the term belt or chain.

Belt tension holders 510 and 520 for maintaining the tension of the power transmission belt 200 may be installed in the central horizontal frame 16. [ The belt tension holding portions 510 and 520 may be, for example, rollers.

The power transmission belt 200 can transmit power for operation of the left screen door portion 91 and the right screen door portion 92. [ The operation principle of the left screen door part 91 and the right screen door part 92 are the same and the principle of operation will be described with reference to the left screen door part 91. [

On the other hand, the left screen door portion 91 is disposed on the left side of the central horizontal frame 16. The left screen door portion 91 includes two vertical frames 11 and 12 and a left horizontal frame 15.

Two upper rotation shafts 151 and 152 are rotatably installed on the vertical frames 11 and 12 or the left horizontal frame 15 at the upper portion of the left screen door portion 91. Two lower rotation shafts 1151 and 1152 are rotatably installed on the vertical frames 11 and 12 at the lower portion of the left screen door portion 91. [

A power transmission pulley 111, which rotates in engagement with the power transmission belt 200, is fixed to the upper rotation shaft 151. When the power transmission belt 200 rotates, the power transmission pulley 111 and the upper rotation shaft 151 rotate together.

Further, the driving pulleys 121 and 122 are fixed to the upper rotary shafts 151 and 152, respectively. The driving pulleys 121 and 122 are engaged with the driving coupling 160. When the upper rotation shaft 151 rotates, the driving pulley 121 rotates. When the driving pulley 121 rotates, the driving coupling 160 rotates. When the driving coupling 160 is rotated, the driving pulley 122 rotates. When the driving pulley 122 rotates, the upper rotating shaft 152 rotates. That is, the driving shaft 501, the power transmission coupling 200, the power transmission pulley 111, the upper rotation shaft 151, the driving pulley 121, the driving coupling 160, the driving pulley 122, Can be rotated together by the power provided by the driving apparatus 500. [

On the other hand, a large-diameter pulley 131 and a large-diameter pulley 1131 are fixed to the upper rotation shaft 151 and the lower rotation shaft 1151, respectively. And a long coupling 171 is engaged between the large pulley 131 and the large pulley 1131. The long connector 171 may be a belt or a chain.

Similarly, a large-diameter pulley 132 and a large-diameter pulley 1132 are fixed to the upper rotation shaft 152 and the lower rotation shaft 1152, respectively. A long connector 172 is engaged between the large pulley 132 and the large pulley 1132. The long connector 172 may be a belt or a chain.

When the upper rotary shafts 151 and 152 rotate, the large rotary shafts 131 and 132 rotate together. When the large rotary shafts 131 and 132 rotate, the longer joints 171 and 172 rotate together. At this time, the large-diameter pulleys 1131 and 1132 engaged with the long connectors 171 and 172 rotate together.

The lower connecting pieces 371 and 372 may be fixedly installed on a part of the rotating long connectors 171 and 172. The lower blocks 341 and 342 may be fixed to the lower connecting pieces 371 and 372 to connect the lower connecting pieces 371 and 372 to the lower blocks 341 and 342 The illustration of the separate link member is omitted). The left and right ends of the lower screen door 812 may be fixedly installed between the lower blocks 341 and 342.

The vertical frames 11 and 12 may be provided with long rails 322 and 321, respectively. The lower blocks 341 and 342 are guided vertically along the long rails 321 and 322, respectively.

When the upper rotary shafts 151 and 152 rotate, the large rotary shafts 131 and 132 rotate together. When the large pulleys 131 and 132 rotate, the long pulleys 171 and 172 engaged with the large pulleys 131 and 132 rotate together with the large pulleys 1131 and 1132. At this time, the lower screen door 812 connected to the long connectors 171 and 172 through the lower connecting pieces 371 and 372 and the lower blocks 341 and 342 can move in the vertical direction.

Meanwhile, a small-sized car 141 and a small-sized car 1141 are fixed to the upper rotation shaft 151 and the lower rotation shaft 1151, respectively. A short coupling 181 is engaged between the small-sized car 141 and the small-sized car 1141. The short connector 181 may be a belt or a chain.

Similarly, a small-sized car 142 and a small-sized car 1142 are fixedly mounted on the upper rotation shaft 152 and the lower rotation shaft 1152, respectively. A short coupling 182 is engaged between the small-sized car 142 and the small-sized car 1142. The short connector 182 may be a belt or a chain.

When the upper rotation shafts 151 and 152 rotate, the small-diameter cars 141 and 142 rotate together. When the small-sized cars 141 and 142 rotate, the short coupling ends 181 and 182 rotate together. At this time, the small-sized cars 1141 and 1142 engaged with the short couplings 181 and 182 rotate together.

Upper connecting pieces 361 and 362 can be fixedly installed on a part of the short connecting ends 181 and 182. The upper blocks 331 and 332 may be fixed to the upper connecting pieces 361 and 362, respectively. The left and right ends of the upper screen door 811 may be fixedly installed between the upper blocks 331 and 332.

The vertical frames 11 and 12 may be provided with short rails 312 and 311, respectively. The upper blocks 331 and 332 are guided vertically along the rails 311 and 312, respectively. The short rails 312 and 311 may be shorter than the long rails 321 and 322, but they are not necessarily short.

When the upper rotary shafts 151 and 152 rotate, the small rotary shafts 141 and 142 rotate together. When the small cars 141 and 142 rotate, the short couplings 181 and 182 engaged with the small cars 141 and 142 and the small cars 1141 and 1142 rotate together. At this time, the upper screen door 811 connected to the short connection ports 181 and 182 through the upper connecting pieces 361 and 362 and the upper blocks 331 and 332 can move in the vertical direction.

The diameters of the small-sized cars 141 and 142 or the small-sized cars 1141 and 1142 are smaller than the diameters of the large-diameter pulleys 131 and 132 or the large-diameter pulleys 1131 and 1132, respectively. The first vertical moving distance of the upper connecting pieces 361 and 362 fixed to a part of the short connecting ports 181 and 182 engaged with the small-sized cars 141 and 142 when the upper rotating shafts 151 and 152 rotate once And shorter than the vertical second movement distance of the lower connecting pieces 371 and 372 fixed to a part of the long connecting pieces 171 and 172 engaged with the large-diameter pulleys 131 and 132, respectively. Accordingly, the moving distance and moving speed of the upper screen door 811 and the lower screen door 812 can be adjusted to be different from each other.

The upper connecting pieces 361 and 362 are positioned higher than the lower connecting pieces 371 and 372 in a state in which the upper screen door 811 and the lower screen door 812 are disposed at the lowermost position The upper screen door 811 and the lower screen door 812 can be prevented from overlapping each other when the upper screen door 811 and the lower screen door 812 are both closed, The upper screen door 811 and the lower screen door 812 can overlap each other when the screen door 812 is all opened.

The lower portion of the upper screen door 811 and the upper portion of the lower screen door 812 overlap with each other when the upper screen door 811 and the lower screen door 812 are both closed. This is achieved by adjusting the relative positions of the upper connecting pieces 361 and 362 with respect to the lower connecting pieces 371 and 372 or by a method of designing the upper screen door 811 and the lower screen door 812 to have a longer vertical width Can be implemented.

The upper screen door 811 or the lower screen door 812 may be rope-shaped or non-rope-shaped. The rope type is a type in which the shape of a door is maintained by using a rope installed to have a certain level of tension, and the non-rope type can be a combination of a frame such as a rectangular plate member and / have.

In the first embodiment shown in FIGS. 1 to 3, the lower screen door 812 is formed as a plurality of ropes extending in the horizontal direction. Since the tension present in this rope can act as a force to pull the vertical frames 11, 12 inward, sufficient rigidity should be provided to the vertical frames 11, 12. In the first embodiment, an example is shown in which the upper screen door 811 is a rectangular plate-like member made of a rigid member. The plate-like door does not generate a force for pulling the vertical frames 11 and 12 inward, but it may be heavy as compared with the rope type. Therefore, the vertical frames 11 and 12 should provide a rigidity capable of supporting this weight.

The right screen door portion 92 is configured to be symmetrical with the left screen door portion 91. Accordingly, the right screen door portion 92 can operate in the same manner as the left screen door portion 91 described above.

In the first embodiment of the present invention described above, the driving device 500 is disposed in the central horizontal frame 16, but in other embodiments the driving device 500 may include a left horizontal frame 15 or a right horizontal frame 17 As shown in Fig.

&Lt; Second Embodiment - Landing screen door using screws >

4 is a front view of the internal structure of the landing screen door 100 according to the second embodiment of the present invention.

The landing screen door 100 according to the second embodiment of the present invention includes one or more left screen doors 1811 and 1812 that are opened and closed vertically and a left driving assembly that moves the left screen doors 1811 and 1812 vertically And may include a left screen screen door 91, The left driving assembly includes a left vertical frame 2, a central vertical frame 3 and a left horizontal frame 5 connecting upper ends of the left vertical frame 2 and upper ends of the central vertical frame 3 to each other And the like.

The platform screen door 100 includes a right screen door 1821 and a right screen door 1822 which are vertically opened and closed and which include one or more right screen doors 1821 and 1822 and a right drive assembly for moving the right screen doors 1821 and 1822 up and down. (Not shown). At this time, the right drive assembly includes a central vertical frame 3, a right vertical frame 4, and a right horizontal frame 4 connecting the upper ends of the central vertical frame 3 and the upper ends of the right vertical frames 4 And the like.

At this time, the driving members mounted on the central vertical frame 3 are configured to control both the operation of the left screen door 91 and the operation of the right screen door 92.

At this time, the left screen doors 1811 and 1812 and / or the right screen doors 1821 and 1822 may be formed of a plate-like member or a rope-like member. The left upper-screen door 1811 located at the upper portion is formed of a plate member, and the lower left-screen door 1812 located at the lower portion may be formed of a rope-shaped member. Further, the upper right-side screen door 1821 located at the upper part of the upper right-screen door 1821 may be formed of a plate member, and the lower right-side screen door 1822 located at the lower side may be formed of a rope-

If the screen door is made of a rope-like member, both ends of the rope may be connected to the blocks 1331, 1332, 1341, 1342, 1431, 1432, 1441 and 1442, respectively.

In another embodiment, the constituent material of each screen door may be composed of only the plate member or only the rope member. Alternatively, the rope-like member may be replaced by a rigid bar-shaped member. The present invention is not limited to the constituent materials of the respective screen doors.

4, ballscrews 21, 22, and 23, which extend vertically and are rotatably installed on the respective vertical frames 2, 3, 4, May be formed. That is, the left-side ball screw 21 is provided in the left vertical frame 2, the center-ball screw 22 is provided in the central vertical frame 3, and the right- A screw 23 may be provided.

At this time, a supporting surface 38 for supporting the ball screws 21, 23 may be formed at the lower end of the vertical frames 2, 4. At this time, the left-side ball screw 21 and the right-side ball screw 23 are vertically erected on the support surface 38 formed at the lower ends of the left-vertical frame 2 and the right-vertical frame 4, respectively .

At this time, a rotation type motor 35 may be fixedly installed on a part of the central vertical frame 3. [ The rotation axis of the motor 35 may be arranged to extend in the vertical direction. At this time, the center-ball screw 22 may be vertically coupled to one side of the motor 35 so as to be rotated by the motor 35.

At this time, the rotational force of the center-ball screw 22 is transmitted to the left-side ball screw 21, the center-ball screw 22, and the right-side ball screw 23, - Power transmission gear assemblies (31, 32, 33) adapted to be converted by the rotational force of the ball screw (23) can be provided.

At this time, the power transmission gear assemblies 31, 32, and 33 may be fixedly coupled to the upper portions of the left vertical frame 2, the central vertical frame 3, and the right vertical frame 4, respectively. Here, in this specification, the power transmission gear assembly 31 fixedly coupled to the upper portion of the left vertical frame 2 may be referred to as a 'first power transmission gear assembly' or a 'left-power transmission gear assembly' The power transmission gear assembly 32 fixedly coupled to the upper portion of the central vertical frame 3 may be referred to as a "second power transmission gear assembly" or a "center-power transmission gear assembly" The power transmission gear assembly 33 fixedly coupled to the upper portion of the power transmission gear assembly 33 may be referred to as a 'third power transmission gear assembly' or a 'right power transmission gear assembly'.

At this time, the upper end of the left-side ball screw 21 is connected to the first side of the first power transmission gear assembly 31, and the left end of the left side-shaft 24 is connected to the second side have. Shaft 24 is connected to the first side of the second power transmission gear assembly 32 and the other end of the upper portion of the center-ball screw 22 is connected to the second side of the second power transmission gear assembly 32, And the left side of the right side-shaft 25 may be connected to the left side. One end of the upper end of the right-side ball screw 23 is connected to the first side of the third power transmission gear assembly 33 and one end of the right side of the right side-shaft 25 is connected to the second side.

Each of the power transmission gear assemblies 31 and 33 may be connected to connecting members 26 and 27 extending in the up and down direction and forming a closed curve. The connecting members 26, 27 may be rope or chain.

One end of the upper portion of the left-side connecting member 26 may be connected to the left-first gear of the first power transmission gear assembly 31. The lower one end of the left-side connecting member 26 may be connected to a pulley fixed to the vertical frame 2. The left upper-vertical moving part 73 may be fixedly connected to a part of the left-connecting member 26. When the center-ball screw 22 is rotated by the driving of the motor 35, the second power transmission gear assembly 32 rotates the left horizontal-shaft 24. When the left horizontal-shaft 24 rotates, the first power transmission gear assembly 31 rotates the left-first gear so that when the left-connecting member 26 rotates, the left upper- The vertical moving part 73 moves in the vertical direction.

The upper end of the right-side connecting member 27 may be connected to the right-side first gear of the third power transmission gear assembly 33. The lower one end of the right-side connecting member 27 may be connected to a pulley fixed to the vertical frame 4. The right upper-vertical moving part 75 may be fixedly connected to a part of the right-side connecting member 27. When the center-ball screw 22 is rotated by the driving of the motor 35, the second power transmission gear assembly 32 rotates the right side-shaft 25. When the right horizontal-shaft 25 rotates, the third power transmission gear assembly 33 rotates the right-first gear, and when the right-connection member 27 rotates, the right upper- The vertical moving part 75 moves in the vertical direction.

That is, the connecting members 26 and 27 are arranged such that the central upper-vertical moving part 70 moves the upper-screen doors 1811 and 1821 up and down along the central-ball screw 22 by driving the motor 35 Screen doors 1811 and 1821 can move up and down at the same speed.

At this time, a central upper-vertical moving part 70 may be movably coupled to a part of the center-ball screw 22 to move the upper-screen doors 1811 and 1821 up and down.

A part of the central upper vertical moving part 70 may be slidably coupled to a separate fourth rail installed along the vertical direction to the central vertical frame 3. [ And the central upper-vertical moving part 70 may be provided with threads which are adapted to engage with the threads formed in the central-ball screw 22. When the motor 35 rotates and the center-ball screw 22 rotates, it is rotated by the force according to the connection relation of the center upper-vertical moving part 70, the fourth rail, and the center-ball screw 22 The central upper-vertical moving part 70 can move in the vertical direction. These techniques are widely known.

The upper blocks 1332, 1331, 1431 and 1432 may be fixedly connected to the upper and the upper movable parts 73, 70 and 75 by connecting pieces 74, 71, 72 and 76. That is, the first left upper block 1332 may be fixed to the left upper-vertical moving part 73 by a connecting piece 74. The second upper left block 1331 may be fixed by a connecting piece 71 to the center upper upper vertical block 70. The first upper right block 1431 may be fixed by the connecting piece 72, . And the second right upper block 1432 may be fixedly attached to the right upper-vertical moving part 75 by a connecting piece 76. [

Left and right ends of the upper-screen doors 1811 and 1821 may be fixedly installed between the upper blocks 1332, 1331, 1431 and 1432.

Likewise, lower-vertical moving parts 83 and 85 are fixed to one part of the left-side ball screw 21 and the right-side ball screw 23 to allow the lower-screen doors 1812 and 1822 to move up and down Can be installed.

A part of the left lower-vertical moving part 83 may be slidably coupled to a separate fifth rail installed along the vertical direction to the left vertical frame 2. [ And the left lower-vertical moving part 83 may be formed with a thread to be engaged with the thread formed on the left-hand ball screw 21. [ When the rotational force of the motor 35 is transmitted and the left-hand ball screw 21 is rotated, the force due to the connection relation between the left lower-vertical moving part 83, the fifth rail, and the left- The left lower-vertical moving part 83 can move in the vertical direction.

A part of the right lower vertical-vertical moving part 85 may be slidably coupled to a separate sixth rail provided along the vertical direction to the right vertical frame 4. [ And the right lower-vertical moving part 85 may be provided with a thread to be engaged with the thread formed on the right-hand ball screw 23. When the rotational force of the motor 35 is transmitted and the right-handed ball screw 23 rotates, the force due to the connection relationship between the right lower-vertical moving part 85, the sixth rail, and the right- The right lower-vertical moving part 85 can move in the vertical direction.

Each of the lower-vertical moving parts 83 and 85 can be fixedly installed with the lower blocks 1342 and 1442 by the connecting pieces 84 and 86. The lower block 1341 and the lower block 1441 may be fixedly connected to each other by a connecting piece 80. At this time, left and right ends of the lower-screen doors 1812 and 1822 may be fixedly installed between the lower blocks 1342, 1341, 1441, and 1442.

The ball screws 21, 22 and 23 may have threaded shapes and the vertical moving parts 83, 70 and 85 coupled to the ball screws 21, 22 and 23 may be connected to the ball screws 21, 22, and 23 so as to move up and down along the thread.

At this time, the rails 1312, 1311, 1411 and 1412 may be provided on the vertical frames 2, 3 and 4, respectively. At this time, the upper blocks 1322, 1331, 1431, and 1432 are vertically guided along the short rails 1312, 1311, 1411, and 1412, respectively.

In addition, long rails 1322, 1321, 1421, and 1422 may be provided on the vertical frames 2, 3, and 4, respectively. At this time, the lower blocks 1342, 1341, 1441 and 1442 are guided vertically along the long rails 1322, 1321, 1421 and 1422, respectively.

In the present specification, the short rail 1312 and the long rail 1322 are collectively referred to as the left rail part 310, the short rail 1412 and the long rail 1422 are referred to as the right rail part 340, The rail 1311 and the long rail 1321 may be referred to as a first central rail portion 320 and the short rail 1411 and the long rail 1421 may be referred to as a second central rail portion 330 have.

At this time, in the second embodiment, when the center-ball screw 22 is rotated by the driving of the motor 35, the left-right horizontal-shaft 24 and the right- The shaft 25 is rotated. The rotational force of the center-ball screw 22 is transmitted to the first and third power transmission gear assemblies 31 and 33 to control the up and down movement of the connecting members 26 and 27 The left-hand ball screw 21 and the right-hand ball screw 23, respectively.

That is, as the center-ball screw 22 rotates, the central upper-vertical moving part 70, which is coupled to a part of the central-ball screw 22, moves up and down along the thread of the central- The left upper-vertical moving part 73 connected to one point of the left-side connecting member 26 and the right upper side-vertical side connected to the one point of the right-side connecting member 27 The eccentric portion 75 may be configured to move in the vertical direction.

The left lower-vertical moving part 83 and the right lower-vertical moving part 85, which are coupled to respective ones of the left-side ball screw 21 and the right-side ball screw 23, As shown in Fig.

For example, when the ball screws 21, 22 and 23 rotate clockwise, the upper-vertical moving parts 73, 70 and 75 and the lower-vertical moving parts 83 and 85 can be moved upward, and the ball screws 21, The upper-vertical moving parts 73, 70, 75 and the lower-vertical moving parts 83, 85 can move downward when the first and second moving parts 22, 23 rotate counterclockwise. The direction of rotation of each of the ball screws 21, 22, 23 may vary depending on the specific design.

At this time, the coupling relationship between the ball screws 21, 22, 23, 24, 25 and the vertical moving parts 70, 73, 75, 80, 83, 85 and the driving method therefor are disclosed in Korean Patent No. 10-1034588 Technology. &Lt; / RTI >

The upper-screen doors 1811 and 1821 and the lower-screen doors 1812 and 1822 are adjusted by adjusting the inclination of the screw thread formed on the ball screws 21, 22 and 23 and / or the gear ratio of the power transmission gear assemblies 31 to 33, It will be readily appreciated that the respective movement speeds can be controlled equally or differently.

As the inclination of the screw thread formed on the ball screw is further inclined in the direction of extension of the ball screw, assuming that the ball screw rotates at a specific angular velocity, the vertical moving parts (70, 83, 85) The speed becomes larger.

The gear ratio of the power transmission gear assemblies 31 to 33 is adjusted so that the vertical moving speed of the vertically movable portion 70 can be controlled to be smaller than the vertical moving speed of the vertical moving portion 70. [ May be set to be smaller than the vertical moving speed of the first and second movable members 83 and 85.

In one embodiment, it can be assumed that the moving speed of the lower-screen doors 1812, 1822 is designed to be faster than the moving speed of the upper-screen doors 1811, 1821. 4 is a state in which the upper-screen doors 1811 and 1821 and the lower-screen doors 1812 and 1822 are downwardly closed and closed, the upper-screen doors 1811 and 1821 are closed, The upper-screen doors 1811 and 1821 and the lower-screen doors 1812 and 1822 may overlap with each other when the lower-screen doors 1812 and 1822 are moved upward.

The gear ratio of the gears included in the power transmission gear assemblies 31 to 33 can be appropriately designed to achieve the object of the present invention.

In this specification, the first power transmission gear assembly 31, the second power transmission gear assembly 32, the third power transmission gear assembly 33, the left horizontal shaft 24, and the right horizontal shaft 25 May be referred to collectively as a " power transmission assembly "

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the essential characteristics thereof. The contents of each claim in the claims may be combined with other claims without departing from the scope of the claims.

1, 100: platform screen door
2, 11, 12: left vertical frame
3: Center vertical frame
4, 13, 14: right vertical frame
5, 15: left horizontal frame
16: Center horizontal frame
6, 17: right horizontal frame
21: Left - Ball Screw
22: Center-ball screw
23: Right - Ball Screw
24: Left horizontal-shaft
25: Right horizontal-shaft
26: left-connecting member
27: right-connection member
31: First power transmission gear assembly
32: Second power transmission gear assembly
33: Third power transmission gear assembly
35: Motor
38: Support surface
40: Safety fence
50: track
60: platform
70: center upper part - vertical moving part
71, 72, 74, 76, 84, 86:
73: upper left-vertical moving part
75: right upper part - vertical moving part
80: central lower part - vertical moving part
83: lower left-vertical moving edge
85: right lower part - vertical moving part
91: Left screen screen
92: Right screen screen
111, 211: Power transmission pulley
121, 122, 221, 222: Driving pulley
131, 132, 231, 232, 1131, 1132, 2231, 2232:
141, 142, 241, 242, 1141, 1142, 2241, 2242:
160, 260: drive connector
171, 172, 271, 272: Long end connection (long belt)
181, 182, 281, 282: short connector (short belt)
310: Left side portion
320: 1st central railway section
330: 2nd central railway section
340: right side portion
800: Screen door
811, 812: Left screen door
821, 822: Right screen door
1811: Top left - Screen door
1812: Lower left-screen door
1821: Top right - Screen door
1822: Right lower - Screen door
311, 312, 411, 412, 1311, 1312, 1411, 1412:
321, 322, 421, 422, 1321, 1322, 1421, 1422:
361, 362, 461, 462:
371, 372, 471, 472:
331, 332, 431, 432, 1331, 1332, 1431, 1432:
341, 342, 441, 442, 1341, 1342, 1441, 1442:
151, 152, 251, 252:
1151, 1152, 2251, 2252:

Claims

A center vertical frame 3 formed with a left vertical frame 2 formed with a left rail part 310, a first central rail part 320 and a second central rail part 330, and a right rail part 340 A right vertical frame 4;
A central-ball screw (22) extending in the vertical direction and rotatably installed in the central vertical frame;
A motor (35) fixedly coupled to the center vertical frame to rotate the center-ball screw;
A left upper-screen door 1811 and a left lower-screen door 1812 both ends of which are slidably coupled to the left rail and the first center rail so as to be able to move in the vertical direction;
A right upper-screen door 1821 and a right lower-screen door 1822 both ends of which are slidably coupled to the right and left second rail portions so as to be movable in the vertical direction;
The upper-left door is fixedly coupled to the right-hand end of the screen door and is fixedly coupled to the left-hand end of the upper-right screen door. When the central-ball screw is rotated, A central-vertical moving part (70) coupled to said center-ball screw for movement;
A left-hand ball screw 21 extending in the vertical direction and rotatably installed in the left vertical frame;
A right-side ball screw 23 extending in the vertical direction and rotatably installed in the right side vertical frame;
The left-power transmission gear assembly 31, the center-power transmission gear assembly 32, the right-side power transmission gear assembly 32, the right-side power transmission gear assembly 32, Assembly 33, a left horizontal-shaft 24 connected between the left-power transmission gear assembly and the center-power transmission gear assembly, and a left-right power transmission gear assembly between the center- A power transmission assembly including a right horizontal-shaft (25) connected to the power transmission assembly;
The left-side ball screw is fixedly coupled to the left end of the left-bottom-screen door. When the left-side ball screw is rotated, the left- (73);
The right-side ball screw is fixedly coupled to the right end of the right-bottom-screen door. When the right-side ball screw is rotated, the right- (75);
A connection block 804 connecting the first lower block 1341 fixedly coupled to the right end of the left lower-screen door and the second lower block 1441 fixedly coupled to the left end of the right lower screen door );
A left-connecting member 26 extending in the up-and-down direction in the left-to-power transmission gear assembly and constituting a closed curve and formed of a rope or a chain, and a right- A right-side connecting member 27 in a chain; And
A left upper-vertical moving part 73 fixed to a part of the left-side connecting member 26 and a right upper upper-vertical moving part 75 fixed to a part of the right-side connecting member 17;
/ RTI >
The left upper end of the screen door is fixedly coupled to the left upper-vertical moving part, and the right end of the right upper-screen door is fixedly coupled to the right upper-vertical moving part,
In order to convert the rotational force of the center-ball screw into the rotational force of the left-ball screw and the right-ball screw, the left-right-shaft and the right- The left-power transmission gear assembly and the right-power transmission gear assembly are adapted to be driven,
Screen door device (100).

The method according to claim 1,
The left-connecting member is connected to the left-first gear of the left-power transmission gear assembly,
The right-link member is connected to the right-first gear of the right-power transmission gear assembly,
When the center-ball screw is rotated by driving the motor, the center-power transmission gear assembly rotates the left horizontal-shaft, and when the left horizontal-shaft rotates, the left- When the left-connecting member rotates by rotating the first gear, the left upper-vertical moving part is moved in the vertical direction,
When the center-ball screw is rotated by driving the motor, the center-power transmission gear assembly rotates the right-side shaft, and when the right-side shaft rotates, the right- - when the right-connecting member is rotated by rotating the first gear, the right upper-vertical moving part is moved in the vertical direction,
Screen door device.

delete

The rail according to claim 1, wherein each of the left rail, the right rail, the first central rail, and the second central rail comprises a single rail (1312, 1412, 1311, 1411) and one long rail (1322, 1422, 1321, 1421).

6. The apparatus of claim 5, wherein the left upper-screen door and the right upper-screen door are adapted to move up and down along the rails, the left lower-screen door and the lower right- So as to move up and down.