WO2005102808A1

WO2005102808A1 - Safety device for subway

Info

Publication number: WO2005102808A1
Application number: PCT/KR2004/000938
Authority: WO
Inventors: Sangjin Cha
Original assignee: On, Dongsu; Lee, Gyunsub; Jeong, Hyunsuk; Jang, Seokwon; Shin, Heuncheol
Priority date: 2004-04-23
Filing date: 2004-04-23
Publication date: 2005-11-03

Abstract

The present invention relates to a safety device for a subway that is provided with a screen door adapted to make the subway approaching the platform blocked from the platform, whereby passengers can be safely protected from all kinds of safety accidents that may be caused at the time of getting on and off the subway like the case where passengers &11 down a platform by their carelessness or when their foot is caught into a space between the platform and the subway, and they can take the subway in a safest manner.

Description

Description SAFETY DEVICE FOR SUBWAY Technical Field

[1] The present invention relates to a safety device for a subway, and more particularly, to a safety device for a subway that is capable of previously preventing all kinds of safety accidents that may be caused at the time of getting on and cff the subway like the case where a passenger falls down a platform by his or her carelessness or when his or her foot is caught into a space between the platform and the subway. Background Art

[2] With the formation of big cities, at present, traffic becomes heavy, which makes subways widely used as a main vehicle by modern people as compared with cars or buses. The subways are capable of transporting a great number of peoples to their desired destinations at a relatively fast speed when compared with the vehicles running on the ground. From this viewpoint, the subways have been widely used and will be also used as their favorite vehicle.

[3] It should be noted that as the subways carry a huge number of passengers daily, the number of safety accidents becomes gradually increased.

[4] Such the safety accidents are generally caused when a passenger falls from the safety region on the platform by his or her carelessness or when his or her foot is caught into a space between the platform and the subway. Especially, children and old peoples have got the safety accidents when they are on the platform or they take the subway.

[5] On the platform of the subway station, thus, there is a predetermined safety mark or line behind which the passengers should wait for the subway for their safety. When the subway reaches the station, the passengers are on a line behind the safety mark or line for getting on and df the subway, which allows them to take the subway in a relatively safer manner.

[6] However, the safety mark or line has a function of giving the passengers a kind of warning sign for their safety, but it really does not give them any strong control device. Therefore, safety accidents occur frequently on the platform of the subway station.

[7] That is, there is no control device that is disposed between the platform and the rail, such that passengers may fall down the platform or their foot may be caught into the space between the platform and the subway. Also, a relatively large gap is formed between the platform and the entrance of the subway, such that passengers may be caught into the gap therebetween. Disclosure of Invention Technical Problem

[8] Accordingly, the present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a safety device for a subway that is capable of previously preventing all kinds of safety accidents that may be caused at the time of getting on and df the subway like the case where passengers fall down a platform by their carelessness or when their foot is caught into a space between the platform and the subway and also ensuring that they can take the subway in a safest manner. Technical Solution

[9] To accomplish the above object, according to the present invention, there is provided a safety device for a subway comprising: a box adapted to be buried into a platform and having a screen door ascending and descending slot formed along a longitudinal direction therecf; a pair cf generally curved guide rails mounted at both sides cf the box; a pair cf generally curved sliders disposed slidably on the guide rails, each cf the sliders having a rack formed on the front surface therecf; a screen door adapted to be assembled between the sliders and having upper and lower lateral projections formed on the top and bottom portions therecf; a reversible motor disposed within the box for ascending/descending the sliders through pinions each engaged with the rack; a safety footboard adapted to be assembled to the upper lateral projection in such a manner as to be adjusted forwardly and backwardly in width, for blocking a space between the platform and an entrance cf the subway; and first and second limit switches disposed at the upper and lower portions cf the box for limiting the operation range cf the screen door. Advantageous Effects

[10] Further objects and advantages cf the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which: Description of Drawings

[11] FIG. 1 is a perspective view cf a safety device for a subway according to the present invention wherein a screen door is at a closed position;

[12] FIG. 2 is a perspective view cf a safety device for a subway according to the present invention wherein the screen door is at an opened position; [13] FIG. 3 is a sectional view taken along the line A- A cf FIG. 2;

[14] FIG. 4 is an exploded perspective view cf the present invention;

[15] FIG. 5 is an exploded perspective view cf a safety footboard used in the safety device for the subway cf this invention;

[16] FIGS. 6 and 7 are side sectional views showing the installation and operation states cf the present invention; and

[17] FIG. 8 is a perspective view showing the installation state cf the present invention. Best Mode

[18] N)w, an explanation cf the preferred embodiment cf the present invention will be in detail given with reference to attached drawings.

[19] As shown in FIGS. 1 to 8, a safety device for a subway according to the present invention includes: a box 10 buried into a platform 1 and having a screen door ascending and descending slot 11 formed along a longitudinal direction therecf; a pair cf generally curved guide rails 20 mounted at both sides cf the box 10; a pair cf generally curved sliders 30 disposed slidably on the guide rails 20, each cf the sliders having a rack 31 formed on the front surface therecf; a screen door 40 adapted to be assembled between the sliders 30 and having upper and lower lateral projections 41 and 42 formed on the top and bottom portions therecf; a reversible motor 60 disposed within the box 10 for ascending/descending the sliders 30 through pinions 50 each engaged with the rack 31; a safety footboard 70 adapted to be assembled to the upper lateral projection 41 in such a manner as to be adjusted forwardly and backwardly in width, for blocking a space between the platform 1 and an entrance 3 cf the subway 2; and first and second limit switches 80 and 81 disposed at the upper and lower portions cf the box 10 for limiting the operation range cf the screen door 40.

[20] In this case, the box 10 is firmly buried into the platform 1, as shown in FIGS. 6 and 7, serving to support the guide rails 20 formed at both sides therecf, and as shown in FIG. 4, the box 10 includes a screen door ascending/descending slot 11 that is formed along a longitudinal direction therecf for guiding the screen door 40 therethrough. At that time, the box 10 is disposed at every positions cf getting on and cff the subway on the platform 1.

[21] The guide rails 20 are formed curvedly at both sides cf the box 10 for guiding the sliders 30 that are formed at both sides therecf, and as shown in FIGS. 6 and 7, in this case, they are curved protrudedly toward rails on which the subway 2 approaches. At that time, the guide rails 20 are formed in such a height not as to be jumped and are also extended downwardly from the box 10 to a predetermined length. [22] The sliders 30 are assembled slidably with the guide rails 20 for supporting the screen door 40, each cf the sliders 30 having a rack 31 formed on the front surface therecf, the rack 41 adapted to be engaged with the pinion 50. Furthermore, each cf the sliders 30 has a plurality cf bearings 32 formed on both sides therecf, for preventing the movement upon the ascending/descending cf the screen door 40 and for guiding the ascending/descending operations cf the screen door 40. At that time, the sliders 30 are formed curvedly to correspond with the guide rails 20.

[23] The screen door 40 is firmly assembled between the sliders 30 formed at both sides therecf in such a manner as to be ascended/descended as a single body with the sliders 30 and has the upper and lower lateral projections 41 and 42 formed at the top and bottom portions therecf such that the upper and lower lateral projections 41 and 42 come in contact with the limit switches 80 and 81. At that time, the screen door 40 is made cf a transparent material through which the front can be well seen, and it is formed curvedly to correspond with the sliders 30.

[24] The upper lateral projection 41 cf the screen door 40 has a plurality cf long holes 41a formed in a width direction therecf, and the safety footboard 70 has a plurality cf bolts 72 arranged thereon to correspond to the plurality cf long holes, so that when the upper lateral projection 41 is coupled to the safety footboard 70, the bolts 72 cf the safety footboard 70 are passed through the plurality cf long holes 41a cf the upper lateral projection 41 to be engaged with a plurality cf nuts 71 corresponding to the number cf the bolts 72. Thus, the safety footboard 70 can be adjusted to an appropriate length at the time cf blocking the space between the platform 1 and the subway 2.

[25] The screen door 40 is further provided with a predetermined size cf emergency door 44 that is opened by releasing the locked state conducted by a plurality cf locking members 43, when emergent cases occur, and the emergency door 44 is connected to the screen door 40 at the top portion therecf in such a manner as to be opened/closed by means cf hinges 45. At that time, the emergency door 44 is formed in such a manner as to be opened easily only at the entrance 3 side cf the subway 2 by unlocking the locking members 43, whereas it is not opened at the platform 1 side.

[26] The pinion 50 is engaged with the rack 31 cf each slider 30 for ascending/ descending the slider 30, and as shown in FIG. 3, it is formed rotatably at both sides cf the interior cf the box 10, respectively, being connected with the reversible motor 60.

[27] The reversible motor 60 is formed in the box 10 for ascending/descending the sliders 30 through the pinions 50, which is connected electrically to a controller that is installed in the subway station and automatically controlled. Thus, the controller is connected with a switch device for opening/closing the entrance 3 cf the subway 2 such that the reversible motor 60 can be automatically controlled. As a result, the reversible motor 60 is automatically driven as the entrance 3 cf the subway 2 is opened/closed after reaching the platform 1.

[28] In other wDrds, as shown in FIG. 6, in the state where the subway 2 has not reached the platform 1 yet, the reversible motor 60 is driven in a forward direction to ascend the sliders 30 upwardly such that the screen door 40 is kept at a closed state, and at this state, as shown in FIG. 7, when the entrance 3 cf the subway 3 is opened after the subway 2 reaches the platform 1, the reversible motor 60 is driven in a backward direction to descend the sliders 30 downwardly such that the screen door 40 is kept at an opened state. Next, if the entrance 3 is closed after the passengers get on and cff the subway 2, the reversible motor 60 is driven again in the forward direction to ascend the sliders 30 upwardly such that the screen door 40 is at the closed state again.

[29] The safety footboard 70 is assembled to the upper lateral projection 41 cf the screen door 40 in such a manner as to be adjusted in width in forward and backward directions therecf, with a result that it covers the space between the platform 1 and the entrance 3 cf the subway 2, as shown in FIG. 7. So as not to interfere with the subway 2 in the approach therecf to the platform 2, the safety footboard 70 is kept at a separated distance from the subway 2 toward the platform 1 at the state where the screen door 40 is ascended, as shown in FIG. 6, and on the other hand, so as to cover the space between the subway 2 and the platform 1, the safety footboard 70 is at a close distance to the entrance 3 cf the subway 2 at the state where the screen door 40 is descended, as shown in FIG. 7. As a result, the installation cf the safety footboard 70 prevents the passenger's foot from being caught into the space between the platform 1 and the subway 2.

[30] The limit switches 80 and 81 are disposed on the upper and lower portions cf the box 10 for limiting the operation range cf the screen door 40 and come in contact with the upper and lower lateral projections 41 and 42 cf the screen door 40, as shown in FIGS. 6 and 7. Also, the limit switches 80 and 81 are connected electrically to the reversible motor 60 and the controller and when they come in contact with the upper and lower lateral projections 41 and 42 cf the screen door 40, they make the driving cf the reversible motor 60 stopped. Accordingly, if the screen door 40 is completely ascended, as shown in FIG. 6, the lower lateral projection 42 comes in contact with the limit switch 81, thereby stopping driving the reversible motor 60, and contrarily, if the screen door 40 is completely descended, as shown in FIG. 7, the upper lateral projection 41 comes in contact with the limit switch 80, thereby stopping driving the reversible motor 60.

[31] Under the above configuration, an explanation cf the operation relationship cf the safety device for the subway will be given.

[32] As shown in FIG. 6, first cf all, in the state where the subway 2 does not reach the platform 1 the screen door 40 is ascended by the operation cf the sliders 30 and maintains its closed state firmly such that the passengers who wait for the subway cannot step out over the safety line. That is to say, in this state the space between the platform 1 and the rail on which the subway 2 is approaching is blocked by the screen door 40 such that accidents caused by the passenger's carelessness like the case where the passenger falls down the platform 1 can be previously prevented.

[33] Next, as shown in FIG. 7, if the subway 2 completely reaches the platform 1 to open the entrance 3 cf the subway 2, the reversible motor 60 is automatically driven at that time to thereby make the pinions 50 that are engaged with the racks 31 driven, with a result that the sliders 30 are descended. This makes the screen door 40 descended to become an opened state. At that time, the safety footboard 70 is descended at the same time such that it covers the space between the platform 1 and the entrance 3 cf the subway 2, which helps the passengers get on and cff the subway safely. At that time, if the screen door 40 is fully descended, the upper lateral projection 41 comes in contact with the limit switch 80 with a result cf stopping driving the reversible motor 60. At this state, in other wDrds, the space between the platform 1 and the subway 2 is covered by means cf the safety footboard 70 with a result cf preventing the passenger's foot from being caught into the space.

[34] If the entrance 3 cf the subway 2 is closed after the passengers get on and cff the subway, the reversible motor 60 is automatically driven again to maintain the screen door 40 in the closed position, as shown in FIG. 6.

[35] On the other hand, in an emergency case where even though the entrance 3 cf the subway 2 is opened after the subway 2 reaches the platform 1, the screen door 40 is not opened by the malfunction cf the reversible motor 60, the passengers who are on the subway 2 can unlock the locking members 43 on the screen door 40 at the entrance 3 side opened thus to just push the emergency door 44 toward the platform 1 side, hence opening the emergency door 44. In such the emergency case, the passengers open the emergency door 44 on the screen door 40 and safely escape from the subway 2.

[36] According to the safety device for the subway cf the present invention, therefore, the screen door 40 and the safety footboard 70 are disposed in such a manner as to be ascended from and descended to the platform 1 cf each station, such that the safety device for the subway is capable cf previously preventing all kinds cf safety accidents that may be caused at the time cf getting on and cff the subway like the case where a passenger falls down the platform 1 by his or her carelessness or when his or her foot is caught into the space between the platform 1 and the subway 2 and also ensuring that he or she can take the subway in a safest manner. Industrial Applicability

[37] As set forth in the foregoing, there is provided the safety device for the subway that is provided with a screen door adapted to make the subway approaching the platform blocked from the platform, whereby passengers can be safely protected from all kinds cf safety accidents that may be caused at the time cf getting on and cff the subway like the case where passengers fall down a platform by their carelessness or when their foot is caught into a space between the platform and the subway, and they can take the subway in a safest manner.

[38] While the present invention has been described with reference to a few specific embodiments, the description is illustrative cf the invention and is not to be construed as limiting the invention. Various modifications may occur to those skilled in the art without departing from the true spirit and scope cf the invention as defined by the appended claims.

Claims

[1] A safety device for a subway comprising: a box (10) buried into a platform (1) and having a screen door ascending and descending slot (11) formed along a longitudinal direction therecf; a pair cf generally curved guide rails (20) mounted at both sides cf the box (10); a pair cf generally curved sliders (30) disposed slidably on the guide rails (20), each cf the sliders (30) having a rack (31) formed on the front surface therecf; a screen door (40) adapted to be assembled between the sliders (30) and having upper and lower lateral projections (41 and 42) formed on the top and bottom portions therecf; a reversible motor (60) disposed within the box (10) for ascending/descending the sliders (30) through pinions (50) each engaged with the rack (31); a safety footboard (70) adapted to be assembled to the upper lateral projection (41) in such a manner as to be adjusted forwardly and backwardly in width, for blocking a space between the platform (1) and an entrance (3) cf the subway (2); and first and second limit switches (80 and 81) disposed at the upper and lower portions cf the box (10) for limiting the operation range cf the screen door (40).

[2] A safety device for a subway according to claim 1, wherein each cf the sliders (30) has a plurality cf bearings (32) formed on both sides therecf, for preventing the movement upon the ascending/descending cf the screen door (40) and for guiding the ascending/descending operations cf the screen door (40).

[3] A safety device for a subway according to claim 1, wherein the upper lateral projection (41) cf the screen door (40) has a plurality cf long holes (41a) formed in a width direction therecf, and the safety footboard (70) has a plurality cf bolts (72) arranged thereon to correspond to the plurality cf long holes, so that when the upper lateral projection (41) is coupled to the safety footboard (70), the bolts (72) cf the safety footboard (70) are passed through the plurality cf long holes (41a) cf the upper lateral projection (41) to be engaged with a plurality cf nuts (71) corresponding to the number cf the bolts (72). the safety footboard (70) has a plurality cf bolts (72) adapted to be inserted into the plurality cf long holes (41a) and fixed thereto by means cf the number cf nuts (71) corresponding to the plurality cf bolts (72).

[4] A safety device for a subway according to claim 1, wherein the screen door (40) is provided with an emergency door (44) that is adapted to be opened by releasing a locked state conducted by a plurality cf locking members (43) attached thereon.