Sliding door apparatus for platform for tracle vehicles

Abstract: [PURPOSE] To provide a door opening and closing driving apparatus for a door apparatus for a platform for track vehicles (10,11) which can freely adjust the position and the width at and with which doors are to be opened and can vary the direction and the stroke in and over which the doors are to be opened and closed. [CONSTITUTION] Driving rollers (5₁ to 5₅) which rotate with intersecting angles with respect to driven rollers (3A,3B) provided on doors (1A,1B and so forth) are contacted with the driven rollers (3A,3B), and the sliding doors are opened and closed by movement of the driven rollers. The distance between opening and closing driving sections (4₁ to 4₅) provided with the driving rollers (5₁ to 5₅) is set to a distance smaller than the length of the driven rollers (3A,3B), and an opening of any of various sizes can be formed without being limited by the width dimension of the doors.

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a sliding door apparatus according to the preamble of the claim. 2. Description of the Prior Art It is proposed by the official gazette of Japanese Patent Publication Application No. 57-2537 and so forth to form, at a platform for track vehicles, a partition by means of a wall on the side of the platform facing the track, provide sliding doors on a face of the wall and adjust the opening position of the sliding doors in response to an error amount of the stopping position at which a track vehicle is stopped in order to assure the safety of passengers or enhance the air conditioning efficiency of a building formed at the platform, and this is adapted well when the type of track vehicles is fixed. However, with the sliding door apparatus for a platform for track vehicles of the proposal described above, when track vehicles of many different types make an object, the sliding door cannot be opened in conformity with entrances which vary in position and dimension widely. This is impossible particularly where it is necessary to even change the sliding directions of the sliding doors. SUMMARY OF THE INVENTION It is an object of the present invention to provide a sliding door apparatus for a platform for track vehicles and so forth wherein the position and the width at and with which doors are opened can be adjusted and the directions and the strokes in and over which the doors are opened and closed are variable. This object is advantageously attained by the characterising features of the claim. According to the present invention, a sliding door apparatus for a platform wherein a plurality of sliding doors are provided along a platform edge on the platform, at which a track vehicle stops, such that the sliding doors can be opened and closed in conformity with an entrance of the track vehicle is characterized in that the plurality of sliding doors are, in a closed condition, at their stationary fixed positions in which they are arranged continuously on a serial line, that a sliding door shifting apparatus for shifting those of the sliding doors which are to be opened and closed in conformity with the entrance of the track vehicle between the stationary fixed positions and shifted positions at which the sliding doors extend on a linear row parallel to those at the stationary fixed positions is provided, that opening/closing driving apparatus having variable shifting directions and variable shifting stroke amounts of the sliding doors for opening and closing the sliding doors disposed at the shifted positions in conformity with the entrance of the track vehicle stopped are provided and that a logic apparatus for selecting those of the sliding doors to be shifted from information regarding the position and the width of the entrance of the track vehicle stopped and setting and controlling the shifting direction and the shifting stroke amount of the sliding doors is provided. In the construction as mentioned above, the plurality of sliding doors are disposed on the serial line in an ordinary closed condition, and in order to form an opening corresponding to an entrance of a track vehicle stopped, the sliding doors to be opened are shifted from the positions on the serial line to the shifted positions. The sliding doors disposed at the shifted positions can be opened in response to moving directions are stroke amounts for the individual sliding doors so as to conform with the entrance as the logic unit to which various information of the entrance of the track vehicle is provided executes calculating processing and controls a varying mechanism of the opening and closing driving apparatus. When the sliding doors are to be closed, the sliding doors are closed by reverse operations to those in the opening operation, and then returned from the shifted positions to the stationary fixed positions, and consequently, the sliding doors can be prepared for subsequent opening operation. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows in perspective view an embodiment of an opening and closing driving apparatus of the sliding door apparatus of the present invention; FIG. 2 shows a plan view of a sliding door apparatus for a platform when the opening and closing driving apparatus of FIG. 1 is applied to a platform for track vehicles; FIG. 3 is a side elevational view of the sliding door apparatus shown in FIG. 2; FIG. 4 shows in vertical sectional view an embodiment of part of a sliding door shifting apparatus and an opening and closing driving apparatus of the present invention in a condition wherein the sliding doors are at stationary fixed positions. FIG. 5 is a vertical sectional view in a condition wherein a sliding door is disposed to a shifted position in FIG. 4. FIG. 6 is a plan view showing a relationship between a rail of a shifting apparatus at a lower portion of a sliding door and a sliding door supporting rod in FIG. 5. FIG. 7 shows in vertical sectional view another embodiment of a sliding door shifting apparatus of the present invention. FIG. 8 is a plan view illustrating a relationship between an entrance of a vehicle and sliding doors. FIG. 9 is a plan view showing another embodiment of a sliding door apparatus different from the sliding door apparatus of FIGS. 2 and 3. FIG. 10 is a side elevational view of the sliding door apparatus of FIG. 9. FIG. 11 is a plan view of the siding door apparatus showing a moved condition of sliding doors where two entrances of a vehicle are provided closely to each other. FIG. 12 shows in perspective view of another opening and closing driving apparatus of the present invention which can be applied to the sliding door apparatus shown in FIGS. 9 to 11. FIG. 13 is a circuit diagram for controlling an opening and closing operating section in the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In the following, embodiments of the present invention are described with reference to the drawings. FIG. 1 shows a first embodiment of a sliding door apparatus according to the present invention. In the first embodiment, a sliding door is employed as a door. Sliding doors 1A and 1B as doors are, in the condition shown, in a closed condition, and from this condition, the sliding doors 1A and 1B can be opened in conformity with entrances of a track vehicle by operation of the door opening and closing driving apparatus. Door rollers 2A₁, 2A₂ and 2B₁ and 2B₂ are mounted on brackets formed at upper positions of the sliding doors 1A and 1B, and since the door rollers are placed on a sliding door supporting rail not shown, the sliding doors 1A and 1B are moved when leftward or rightward force is applied to the sliding doors 1A and 1B. Driven rollers 3A and 3B are mounted at upper end sides of the brackets provided on the sliding doors 1A and 1B, and the individual driven rollers 3A and 3B are held in engagement with driving rollers 5₁, 5₂, 5₃, 5₄ and 5₅ provided on door opening and closing driving sections 4₁, 4₂, 4₃, 4₄ and 4₅, respectively. Each of the door opening and closing driving sections 4₁ to 4₅ is supported on a support shaft 6, and the support shaft 6 supports an actuator 7 thereon. The individual actuators are provided to set intersecting angles of the driving rollers 5₁ and 5₂ of the door opening and closing driving sections 4₁ to 4₂ with respect to the driven roller 3A of the sliding door 1A and to set intersecting angles of the driving rollers 5₃ to 5₅ of the door opening and closing driving sections 4₃ to 4₅ with respect to the driven roller 3B of the sliding door 1B, and an action of each of the actuators 7 can modify the intersecting angle of the driving roller by way of rods 9₁ and 9₂ connected between arm portions 8₁ and 8₂ formed on the door opening and closing driving sections 4₁ and 4₂, respectively. It is to be noted that the actuators for the left side door opening and closing driving sections 4₃ to 4₅, that is, the actuators for the sliding door 1B, are not shown. When the driving rollers 5₁ to 5₄ of the door opening and closing driving sections 4₁ to 4₄ rotate, the driving rollers 5₁ and 5₂ to which a predetermined intersecting angle is provided by the actuator 7 move the driven roller 3A in the rightward direction, and the sliding door 1A is moved in the rightward direction together with the driven roller 3A. Since the intersecting angle of the driving rollers 5₃ and 5₄ is set opposite to the intersecting angle of the driving rollers 5₁ and 5₂, the sliding roller 1B is moved in the leftward direction, and the sliding doors 1A and 1B are moved to the opposite sides and opened. The door opening and closing driving section 4₅ is controlled to the same intersecting angle as the door opening and closing driving section 4₄ and is engaged with the sliding door 1B fed in the leftwardly direction so that it provides a greater leftward stroke amount to the sliding door 1B. The door opening and closing driving sections are disposed continuously such that the pitch between the two door opening and closing driving sections 4₁ and 4₂ or 4₃ and 4₄ is set smaller than the length of each driven roller, and consequently, feeding of a continuous long stroke amount can be permitted. In case the type wherein power of the door opening and closing driving sections is concentrated is employed, the support shaft 6 described above can be constructed as a driving shaft, and power can be transmitted to the driving roller by way of gears or the like. A relationship between entrances of vehicles and sliding doors when the door opening and closing driving apparatus of the present invention for sliding doors shown in FIG. 1 is applied to sliding doors at a platform for track vehicles is illustrated in FIGS. 2 and 3. FIG. 2 illustrates in plan view a relationship between a track vehicle and a sliding door apparatus provided with the door opening and closing driving apparatus of the present invention, and FIG. 3 is a side elevational view of sliding doors which are a sliding door apparatus. Referring to FIG. 2, reference numerals 10 and 11 denote each a vehicle, and the vehicles 10 and 11 are coupled to each other by means of a coupler 12 to constitute a train. A pair of entrances 13 and 13' are formed on the vehicle 10, and a pair of sliding doors 14 and 14' of the single sliding type are disposed at the entrances 13 and 13' such that they may open and close the entrances 13 and 13'. At solid line positions shown in FIG. 2, the sliding doors 14 and 14' are in a condition in which they open the entrances 13 and 13', and the sliding doors 14a and 14a' indicated by broken lines show a condition wherein they close the entrances 13 and 13'. Entrances 15 and 15' of the vehicle 11 are wide different from those of the vehicle 10 and accordingly are provided with sliding doors 16 and 16' of the double sliding type. Reference numeral 17 denotes a platform edge of a platform, and sliding doors 18₁ to 18₇ and 18₈ to 18₁₆ as doors are disposed continuously in a serial row along the platform edge 17. In the drawings, the sliding doors in a closed condition are provided with the suffix a like and are indicated by broken lines, and the sliding doors in the condition make a straight line and the position of each of the sliding doors is referred to as stationary fixed position. When the sliding doors are to be opened, the sliding doors to be moved to be opened are shifted from the broken line positions once to alternate long and short dash line positions provided with the suffix b (positions moved in parallel toward the platform edge 17 side, shown only of hereinafter referred to as shifted positions), and after then, they are shifted to solid line positions without a suffix in predetermined directions by predetermined stoke amounts so that openings registered with the entrances 13, 13', 15 and 15' of the vehicles may be formed. A fixed wall 19 is disposed in a common plane with the sliding doors between the sliding door 18₇ and 18₈. The fixed wall 19 is a location which corresponds to a connecting portion of a train and has no relation with an entrance when any of the various trains is stopped. The positional relationship between the platform and the train in FIG. 2 is such that the center of the fixed wall 19 and the center of the connecting portion of the vehicles do not coincide with each other, and a condition is shown wherein the train is stopped at a position displaced leftwardly from the platform. Even in case the stopping position of the train is displaced from a regular stopping position of the platform in this manner, openings of the doors at the positions coinciding with the entrances of the vehicles are formed by the opening and closing driving apparatus for the sliding doors. While, in the embodiment of the present invention described so far, openings of the doors equal to the size of the entrances described above are formed by movement of the sliding doors at the positions of the entrances of the vehicles, it is also possible to open the doors by amounts greater than the magnitudes of the entrances by controlling movement of the sliding doors. FIG. 3 is a side elevational view shown in FIG. 2 and shows a condition wherein the sliding doors are open, and reference numeral 20 denotes a floor of the platform, 21 a ceiling and 22 a door header. Supporting apparatus for the sliding doors and opening and closing driving apparatus are accommodated in the inside of the door header 22. FIGS. 4 and 5 show in vertical elevation an embodiment of a shifting apparatus and an opening and closing driving apparatus for a sliding door of the present invention, and FIG. 4 shows a condition when the sliding door 109 to be driven to the shifted position is at the stationary fixed position (position at which the suffix a is applied in FIG. 2) and FIG. 5 shows a condition wherein the sliding door 109 is disposed at the shifted position. It is to be noted that, in the drawings, when the sliding door is at its stationary fixed position, it is represented by 109B, but when it is at its shifted position, it is represented by 109A. It is to be noted that 109B in FIGS. 4 and 5 indicates a sliding door existing farther than the sliding door 109A. The shifting apparatus is a mechanism for shifting a sliding door between its stationary fixed position and its shifted position, and the shifting apparatus of FIGS. 4 and 5 is provided above and below the sliding door. The shifting apparatus includes, at the upper location, a bracket formed on the sliding door, a hook and a door roller formed on the bracket, a sliding door hanger for engaging with the hook to move the sliding door between the stationary fixed position and the shifted position and a sliding door supporting rail for engaging with the door roller at the shifted position while the shifting apparatus has, at the lower location, a sliding door supporting rod associated with a bottom portion of the sliding door. In particular, describing in accordance with the drawings, a bracket 114 is provided at an upper portion of the sliding door 109B, and a hook 115 is mounted on one face of the bracket 114 while a door roller 116 is mounted on the other face of the bracket 114 and a driven roller 119 (the driven roller constitutes part of an opening and closing driving apparatus which will be hereinafter described) is mounted at an upper end of the bracket 114. And, the hook 115 is held in engagement with a sliding door hanger 117 which holds the sliding door 109B at the stationary fixed position and can shift the sliding door 109B from the stationary fixed position to the shifted position or from the shifted position to the stationary fixed position. The sliding door 109A shifted from the stationary fixed position to the shifted position by the sliding door hanger 117 is allowed to be opened or closed at the shifted position as the door roller 116 is engaged with the sliding door supporting rail 118. When the sliding door 109A is shifted to the shifted position, the driven roller 119 can be engaged with a driving roller (not shown) of an opening and closing driving section 120. The driven roller 119 and the opening and closing driving section 120 constitute part of the opening and closing driving apparatus. At the position of FIG. 4, the hook 115 formed on the bracket 114 is supported on the sliding door hanger 117, and the door roller 116 is held spaced away from the sliding door supporting rail 118 while the sliding door 109B is at the stationary fixed position. The sliding door hanger 117 is constructed such that a pair of crank 121A and 121B having pivotal center shafts 121a and 121b are connected at pivoting ends thereof to shaft portions 117a and 117b at upper and lower ends of an L-shaped vertical arm and an engaging portion 117c for engaging with the hook is formed at an end portion of the horizontal arm. Due to the construction, when the cranks 121A and 121B are pivoted by 180 degrees around the shafts 121a and 121b, the sliding door 109B at the stationary fixed position shown in FIG. 4 is moved, while the hook 115 is held in engagement with the engaging portion 117c of the end portion of the horizontal arm, from the position of FIG. 4 to the shifted position of FIG. 5 drawing an arc having a radius equal to the length of the cranks 121A and 121B by a length equal to twice the length of the cranks 121A and 121B, that is, equal to the diameter of the arc. As a result of such movement, the sliding door 116 provided on the bracket 114 can be engaged with the sliding door supporting rail 118. At the engaging position, the opening an closing driving section 120 which can be engaged with the driven roller 119 formed on the bracket 114 is disposed. A grooved portion 122 is formed at the lower end of the sliding door 109B, and a sliding door supporting rod 123 for engaging with the grooved portion 122 is disposed for movement in a hole portion 111a provided on the floor 111. Pivotal ends of cranks 124A and 124B are connected to upper and lower shaft portions 123a and 123b of the sliding door supporting rod 123 so that the sliding door supporting rod 123 can be shifted between the stationary fixed position of the sliding door and the sifted position of the sliding door similarly to the sliding door hanger 117. When the cranks 124A and 124B are pivoted by 180 degrees drawing arcs centered at the pivotal center shafts 124a and 124b, the sliding door 109B is moved, by the sliding door supporting rod 123 which maintains its posture, from the position shown to the sliding door shifted position at which a rail 125 is positioned. Consequently, the grooved portion 122 of the sliding door 109A is placed onto the rail 125. The rail 125 is provided on the floor 111 and serves as a guide portion for opening and closing of the sliding door 109A together with the sliding door supporting rail 118. The condition wherein the sliding door 109A is shifted from the stationary fixed position of FIG. 4 to the shifted position in order to open or close the sliding door 109A is shown in FIG. 5. When the upper cranks 121A and 121B and the lower cranks 124A and 124B are pivoted by 180 degrees in a synchronized relationship with each other from the condition shown in FIG. 4, the sliding door 109A supported on the sliding door hanger 117 is shifted to the shifted position disposed in an approaching direction to the platform edge of the platform and the door roller 116 provided on the bracket 114 is engaged with and supported by the sliding door supporting rail 118. In this instance, also the lower side of the sliding door 109A is placed onto the rail 125 on the floor by the sliding door supporting rod 123. The upper and lower cranks 121 and 124 have a construction wherein they can be synchronized with each other by mechanical or electrical means. When the sliding door 109A is moved to the position of FIG. 5, the opening and closing driving section 120 disposed at the alternate long and short dash line position is moved to its solid line position at which it engages with the driven roller 119. As a result of the driving of the opening and closing driving section 120, the sliding door 109A is opened and closed by way of the driven roller 119. FIG. 6 is a plan view showing a lower portion of the sliding door in FIG. 5, that is, a portion of the sliding door around the rail 125 and the sliding door supporting rod 123. In the present drawing, the sliding door 109A, and the sliding door 109A₂ are on the rail 125 near the platform edge 108 and are in positions in which they can be opened and closed. The sliding door 109B is disposed at its stationary fixed position spaced away from the platform edge 108. Each of the sliding doors is constructed such that, as shown with the sliding door 109A₂, it is supported on the sliding door supporting rods 123A and 123B at portions adjacent the opposite longitudinal ends thereof and the hole portions 111a are formed in the floor so that the sliding door supporting rods 123A and 123B may move and upper ends of the sliding door supporting rods 123A and 123B are positioned at rail portions corresponding to the hole portions 111a so as to fill up the rail portions lacking due to the hole portions 111a. It is to be noted that, while the sliding door supporting rods 123 of the sliding door 109B at the stationary fixed position are not positioned at the lacking rail portions, since the grooved portions 122 formed on the sliding door are long, the lacking of the rail portion does not make a trouble to opening and closing of the sliding door. FIG. 7 shows another embodiment different from the sliding door shifting apparatus shown in FIGS. 4 and 5. In the present embodiment, the slide door supporting rod provided at the lower portion of the sliding door is unnecessary. In FIG. 7, a sliding door at its stationary fixed position is indicated by 109B while the sliding door at its shifted position is indicated by 109A, and the condition wherein the sliding door 109A is shifted to the shifted position by a sliding door hanger 117 is shown. In the present embodiment, a pair of door rollers 116A and 116B and a pair of hooks 115A and 115B are disposed in a vertically spaced relationship by a fixed distance from each other on a bracket 114A formed on the sliding door 109A, and a sliding door supporting rail 118 which supports the two door rollers 116A and 116B thereon has two upper and lower arresting portions 118a and 118b. A sliding door hanger 117 for supporting the two hooks 115A and 115B thereon has two arresting portions 117c₁ and 117c₂. Due to the construction, the sliding door 109A can be shifted stably from the stationary fixed position to the shifted position and can be opened and closed at the shifted position only relying upon the support at the upper portion thereof. Operation of each sliding door is basically similar to that of the embodiment described above, and shifting movement from the stationary fixed position to the shifted position proceeds such that the sliding door hanger 117 is engaged, by pivotal motion of cranks 121A and 121B, with the hooks 115A and 115B at the two locations to shift the sliding door 109A to the shifted position to the sliding door supporting rail side to engage the two door rollers 116A and 116B with the arresting portions 118a and 118b of the sliding door supporting rail 118, respectively. At a lower portion of the sliding door 109A, a downwardly directed projection 126 is formed at a lower and face of the sliding door, and the projection 126 is engaged with a guide groove 111b formed on a floor 111. Since the sliding door 109A in the present embodiment can be supported stably at the upper portion thereof in this manner, the lower portion of the sliding door 109A is sufficient only if it includes a simple construction which performs mere positioning. FIG. 8 is a plan view showing an open condition of sliding doors in case the width of an entrance 104A of a vehicle 101A is greater than the width of two sliding door 109 on the platform side. The sliding doors are denoted by 109₁ to 109₇, and the sliding doors 109₃, 109₄ and 109₅ of those sliding doors are shifted from the condition of stationary fixed positions (positions of indicated by broken lines) to respective shifted positions on the supporting rail side near to a platform edge 108, and the sliding door 109₃ is moved to the right side while the sliding doors 109₄ and 109₅ are moved to the left side to form an opening which coincides with the entrance 104A of the vehicle. Reference character 107A denotes a sliding door of the double sliding type. FIGS. 9 to 11 show an arrangement of a sliding door apparatus to which a door opening and closing driving apparatus as another embodiment shown in FIG. 12 which will be hereinafter described. In the present embodiment, sliding doors are disposed at fixed positions in two rows parallel to a platform edge, and the odd-numbered sliding doors are disposed in one of the rows and the even-numbered sliding doors are disposed in the other row such that they are disposed alternately to present a closed condition and those of the sliding doors at a position conforming with an entrance are moved in predetermined directions by predetermined stroke amounts by the door opening and closing driving apparatus. FIG. 9 corresponds to FIG. 2 while FIG. 10 corresponds to FIG. 3, and like reference characters are applied to like portions. Referring to FIG. 9, reference numerals 10 and 11 denote each a vehicle, and the vehicles 10 and 11 are coupled to each other by means of a coupler 12 to constitute a train. A pair of entrances 13 and 13' are formed on the vehicle 10, and a pair of sliding doors 14 and 14' of the single sliding type are disposed at the entrances 13 and 13' such that they may open and close the entrance doors 13 and 13'. At solid line positions shown in FIG. 9, the sliding doors 14 and 14' are in a condition in which they open the entrance doors 13 and 13'. Entrances 15 and 15' of the track vehicle 11 are wide different from those of the track vehicle 10 and accordingly are provided with sliding doors 16 and 16' of the double sliding type. Reference numeral 17 denotes a platform edge of a platform, and sliding doors 18₁₇ to 18₂₄ and 18₂₅ to 18₃₃ as doors are disposed continuously in two rows along the platform edge 17. Of the sliding doors, those sliding doors 18₁₇, 18₁₉, 18₂₁ and so forth which have odd-numbered suffixes are supported on a sliding door supporting rail adjacent the platform edge 17 while the even-numbered sliding doors 18₁₈, 18₂₀, 18₂₂ and so forth are supported on another sliding door support rail remote from the platform edge 17. The sliding doors arranged alternately at fixed positions in two rows in this manner are positioned in a closed condition except when a track vehicle stops, and in the drawings, each sliding door which contributes to an opening action is indicated by a broken line when it is at its closed position and such sliding doors are indicated by For the entrance 13, the sliding door is moved rightwardly to the sliding door 18₂₂ while the sliding door is moved leftwardly to the sliding door 18₂₃. Meanwhile, for the other entrance 13', the sliding door is moved rightwardly a little to the sliding door 18₁₇ and the sliding door is moved rightwardly by a great distance to the sliding door 18₁₈ while the sliding door is moved leftwardly a little to the sliding door 18₁₉, thereby opening the sliding doors at the closed fixed positions in conformity with the entrances. Also for the entrances 14 and 14', the sliding doors corresponding to them can be opened similarly in conformity with the entrances. While the sliding doors in the present embodiment are disposed continuously in two rows along the platform edge 17 of the platform such that they are all movable, it is also possible to dispose a fixed wall at a position of the platform edge which does not correspond to an entrance when a train of any type correspond to an entrance when a train of any type stops, for example, at the position corresponding to the sliding door 18₂₄ in FIG. 9. Further, while it is described that, in the embodiment, an opening which conforms to the magnitude of an entrance of a vehicle is formed, also such a modification wherein an opening a little wider than an entrance of a vehicle is formed by controlling movement of the sliding doors. FIG. 10 shows side faces of the sliding doors of FIG. 9, and the sliding doors are in an open condition. Reference numeral 20 denotes a floor of the platform, 21 a ceiling, and 22 a door header, and supporting sections for sliding doors and door opening and closing driving apparatus are accommodated in the inside of the door header 22. While the sliding doors are provided on the two rows of sliding door supporting rails and an opening is formed by selected sliding doors in the embodiment described above, it is also possible to dispose, in addition to the first sliding door supporting rail and the second sliding door supporting rail, a third sliding door supporting rail such that, upon opening and closing of the sliding doors, an opening is set by opening and closing of the sliding doors by the second sliding door supporting rail and the third sliding door supporting rail. This can be put into practice when opening and closing of the sliding doors on the first sliding door supporting rail is difficult from construction of the platform. FIG. 11 shows an embodiment as regards opening and closing of sliding doors when two entrances 204A and 204B of a vehicle are provided closely to each other. In particular, the entrances 204A and 204B are formed closely to each other on a vehicle 201A. Corresponding to this, the width of sliding doors is set smaller than the width of a minimum wall positioned between the adjacent entrances. As a result, the number of sliding doors to be moved is increased in order to form an opening conforming with to the great entrance. The fact that sliding doors 213₁ to 213₁₂ are supported in two rows on sliding door supporting rails is similar to that of FIG. 9, and in the drawing, a condition of closed fixed positions before movement is indicated by a broken line and by the suffix a added to a reference numeral whereas an open condition after movement is indicated by a solid line. And, movement of the sliding doors from the condition of its closed fixed position to its open condition is indicated by arrow marks a to g. For example, when, of the odd-numbered sliding doors supported on the sliding door supporting rail of one row (supporting rail positioned at a lower portion in the drawing), the sliding door 213₅, is opened and moved to the sliding door 213₅ by a stroke of the arrow mark e, also the sliding doors and are moved simultaneously to the positions indicated by the sliding doors 213₇ and 213₉ by a stroke of the arrow mark g. As regards the even-numbered sliding doors supported on the sliding door supporting rail of the other row (supporting rail positioned at an upper portion in the drawing), when the sliding door is moved to open, also the adjacent sliding door 213₈ is simultaneously moved similarly. In FIG. 12, an embodiment of a door opening and closing driving apparatus wherein adjacent sliding doors are disposed alternately at closed fixed positions in two rows. In FIG. 12, two adjacent sliding doors 1C and 1D to be opened are arranged in two rows at the closed fixed positions. Similarly as in the case of FIG. 1, a pair of door rollers 2D₁ and 2D₂ (door rollers of the sliding door 1C are not shown) are mounted on a bracket provided at an upper position of each of the sliding doors 1C and 1D, and each of the door rollers 2D₁ and 2D₂ is placed on a sliding door supporting rail not shown such that the sliding doors 1C and 1D can be opened when a rightward or leftward force is applied to the sliding doors 1C and 1D by an action of the door opening and closing driving apparatus. In the condition shown, a driven roller 3C is disposed at an end of the bracket provided at the upper portion of the sliding door 1C, and a pair of driving rollers 5₁ and 5₂ of door opening and closing driving sections 4₁ and 4₂ are engaged with a driven roller 3C so that, when the driving rollers 5₁ and 5₂ rotate, the sliding door 1C is moved to the right side of the axial direction of the driven roller 3₁ due to intersecting angles set to the driving rollers 5₁ and 5₂. Simultaneously, a driven roller 3₂ of the sliding door 1D and driving rollers 5₃ and 5₄ of door opening and closing driving sections 4₃ and 4₄ are engaged with each other so that, when the driving rollers 5₃ and 5₄ rotate, the sliding door 1D is moved to the left side of the axial direction of the driven roller 3₂ due to intersecting angles set to the driving rollers 5₃ and 5₄. When the sliding door 1D is moved in the leftward direction, the sliding door 1D is disengaged from the door opening and closing driving section 4₃ but is engaged with another door opening and closing driving section 4₅ so that it is provided with a further great leftward stroke amount. The movement of the sliding doors 1C and 1D is such that the door opening and closing driving sections 4₁ and 4₅ are controlled in response to positions and magnitudes of entrances to form predetermined openings. The door opening and closing driving sections are disposed continuously while the pitch between the two door opening and closing driving sections 4₁ and 4₂ or 4₃ and 4₄ is made smaller than the length of each driven roller, and consequently, feeding of a continuous long stroke amount can be permitted. A circuit diagram for controlling the opening and closing driving sections in response to information of entrances of a track vehicle is shown in FIG. 13. From a track vehicle, information 32 regarding positions and widths of entrances of the track vehicle and information 33 regarding a position at which the track vehicle stops are obtained, and the two information 32 and 33 is transmitted to a logic unit 34. The logic unit 34 controls the opening and closing driving sections described above to operate the folding doors to their open positions. In this instance, the logic unit 34 determines if openings corresponding to entrances of the track vehicle can be set "in which directions" and "by what amounts" "the folding doors at which positions" are moved, and controls the individual actuators 35₁ to 35₅ so that intersecting angles of the opening and closing driving sections 31₁ to 31₅ may be obtained in accordance with the determination. While the two opening and closing driving sections are operated by the single actuator in FIG. 1, it is also possible to construct such that one opening and closing driving section is operated by one actuator as shown in FIG. 13. The logic unit 34 also has a function of outputting, when it performs setting regarding "the sliding doors at which positions" should be moved, a shifting instruction to a control line 36 in order to shift, in accordance with the setting, the sliding doors from their stationary fixed positions to their shifted positions on the sliding door supporting rail. It is to be noted that a microcomputer or the like may be used as the logic unit. Due to the construction of the invention, it has an effect that, even when a train of any of different vehicle types stops at the platform and the position and the width of the entrance are not fixed, those of the doors constituted from the sliding doors or the folding doors disposed continuously along the platform edge which correspond to the entrance are selected and the thus selected sliding doors or folding doors can be opened in conformity with the entrance by the opening and closing driving apparatus which is composed of an opening and closing driving section and an opening and closing acting body and by which a suitable opening direction and stroke amount are set, and has another effect that getting on and off of passengers is made smooth and safe.

Claims: A sliding door apparatus for a platform wherein a plurality of sliding doors (1A...1D; 14, 14'; 16, 16'; 18₁...18₃₃, 109A, 109B; 213₁...213₁₂) are provided along a platform edge (8A) on said platform, at which a track vehicle (10, 11) stops, such that said sliding doors can be opened and closed in conformity with an entrance (13, 13'; 15, 15'; 204A, 204B) of the track vehicle (10, 11), characterized in that said plurality of sliding doors are, in a closed condition, at their stationary fixed positions in which they are arranged continuously on a serial line, that a sliding door shifting apparatus (2A...2D) for shifting those of said sliding doors (1A...1D; 14, 14'; 16, 16'; 18₁...18₃₃; 109A, 109B; 213₁...213₁₂) which are to be opened and closed in conformity with the entrance (13, 13'; 15, 15'; 204A, 204B) of the track vehicle (10, 11) between the stationary fixed positions and shifted positions at which the sliding doors extend on a linear row parallel to those at the stationary fixed positions is provided, that opening/closing driving apparatus (4₁...4₅) having variable shifting directions and variable shifting stroke amounts of the sliding doors for opening and closing the sliding doors disposed at the shifted positions in conformity with the entrance of the track vehicle (10, 11) stopped are provided, and that a logic apparatus (34) for selecting those of said sliding doors to be shifted from information regarding the position and the width of the entrance of the track vehicle (10, 11) stopped and setting and controlling the shifting direction and the shifting stroke amount of the sliding doors is provided.

Inventors: KAWANISHI ISAMU, UOZUMI YUKIO, KAWANISHI, ISAMU, UOZUMI, YUKIO
Applicants: KAWASAKI HEAVY IND LTD, KAWASAKI JUKOGYO KABUSHIKI KAISHA
Application year: 1992
Main classification: E05D15
IPC codes: E05F15, B61B1, E05D15