JP2011246094A - Meshing chain-type door opening/closing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meshing chain-type door opening/closing apparatus which secures sufficient traffic space for passengers to safely pass, and at the same time, avoids fall off of the passengers to a gap between a platform and a vehicle, allows the passengers to safely get on and off the vehicle such as an electric train, and which avoids complicatedness of installation.SOLUTION: The meshing chain-type door opening/closing apparatus 100 includes: a pair of meshing chains 110 which mesh with each other to become rigid and freely branched; a chain guiding unit 120 in which a chain storage groove 121 is provided; a driving sprocket 130 for driving the pair of meshing chain 110 so as to be freely movable back and forth; a driving source 140 for supplying driving force to the sprocket 130 for driving; a door section 150 which is driven by the pair of mesh chain 110.

Description

  The present invention is a door opening and closing device that is installed on a platform and that drives a door part that opens and closes an entrance to a vehicle such as a train so as to be movable forward and backward in a horizontal direction. The present invention relates to a mesh chain type door opening and closing device that is employed.

2. Description of the Related Art Conventionally, as a door opening / closing device, one that protects passengers from danger such as falling from a platform in a station to a track or contacting a traveling vehicle (see, for example, Patent Document 1), provided in a vehicle such as a train. There are those that electrically open and close the sliding door (for example, Patent Document 2) and those that provide a scaffold for preventing passengers from falling on the track (for example, see Patent Document 3).
Further, as a drive device for opening and closing a door such as a sliding door, a ball cylinder that includes a ball screw and drives the door so as to freely move forward and backward may be used.

JP-A-9-226568 (Claims, FIG. 1) JP 2002-227523 A (Claims, FIG. 1) JP-T-2007-520383 (paragraph [0012], FIG. 2)

However, in the waist-high platform door device disclosed in Patent Document 1, the structure of a transmission mechanism such as a rotation transmission means for transmitting a driving force from the driving device to the door is complicated and it is difficult to reduce the number of parts. Therefore, it is difficult to secure a sufficient passage space in the platform that allows passengers to pass safely by narrowing the device installation space on the platform by thinly forming the device along its thickness direction. There was a problem.
For example, the width of the passage between the platform stairs and the platform end facing a vehicle such as a train is narrower than other areas in the platform. There is a problem that it may be difficult to pass through the passage between the platform stairs and the platform end when the hour is crowded.

Further, in the electric sliding door device disclosed in Patent Document 2, since the electric sliding door device itself is provided on the train, it is fundamentally avoided that passengers fall into the gap formed between the platform and the train. There was a problem that could not be done.
In addition, in the safety scaffold device for railway vehicles disclosed in Patent Document 3, it is impossible to prevent passengers from entering the entrance / exit provided in the railway vehicle itself, so that the step between the scaffold and the platform or the platform and the floor of the railway vehicle It is difficult to realize the safe getting on and off of the railway vehicle by completely avoiding the level difference between the surface and the construction work to install the device inside the platform is required, so the installation work is avoided There was a problem that it was difficult to do.

  Also, when the door is opened and closed in the longitudinal direction via a linear motion mechanism such as a ball cylinder, the length of the entire device in the state where the entrance / exit is opened is the width of the door portion, that is, the stroke of the linear motion mechanism and the linear motion mechanism. It is difficult to reduce the burden of installation work by shortening the length of the entire device along the horizontal direction because it is longer than the total length of the drive source such as a motor connected to the end of the motor. There was a problem.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to secure a sufficient passage space in the platform for passengers to pass safely, and at the same time, to the clearance between the platform and the vehicle. An object of the present invention is to provide a meshing chain type door opening and closing device that avoids the falling of passengers and realizes safe getting on and off vehicles such as trains and avoids complicated installation work.

  The present invention according to claim 1 is a pair of meshing chains that are driven to move forward and backward in the horizontal direction by being stiffened together in a state of being meshed with each other and opposed to each other and being disengaged and branched. Chain guide means provided with a chain storing groove for guiding and storing the meshing chains branched from each other, and a driving sprocket that engages one of the pair of meshing chains and drives the pair of meshing chains so as to be able to advance and retract. A meshing chain door comprising: a driving source that supplies driving force to the driving sprocket; and a door that is installed on the platform and that is driven by the pair of meshing chains to open and close the entrance to the vehicle An opening / closing device, wherein the door portion is fixedly connected to the end portions of the pair of meshing chains, thereby solving the above-described problem. That.

  According to a second aspect of the present invention, in addition to the configuration according to the first aspect, a connecting pin for fixing and connecting the door portion and the pair of meshing chains to each other is attached to the distal ends of the pair of meshing chains. Thus, the above-described problems are solved.

  According to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, the chain guide means is provided in a virtual plane including a rigid direction and a branching direction of the pair of meshing chains. In addition, the above-described problem is solved by being a rectangular chain guide plate having the rigid direction as a longitudinal direction.

  According to a fourth aspect of the present invention, in addition to the configuration according to the third aspect, the drive sprocket is formed in the chain guide plate and has a concave drive that opens to one side of the pair of meshing chains. The problem mentioned above is solved by being provided with the chain guide plate in the virtual plane in a state of being accommodated in the sprocket accommodating groove.

  In addition to the structure of Claim 3 or Claim 4, this invention which concerns on Claim 5 has a guide rail surface which contact | connects the surrounding surface of the guide roller pivotally attached to the said door part, and is extended in the said rigid direction. The guide rail is fixedly installed on the end face of the chain guide plate, thereby solving the above-described problems.

  According to a sixth aspect of the present invention, in addition to the configuration according to the third or fourth aspect, the chain guide plate is in contact with a circumferential surface of a guide roller that is pivotally attached to the door portion and in the rigid direction. The problem described above is solved by having an end surface that extends to serve as a guide rail surface.

  According to a seventh aspect of the present invention, in addition to the configuration according to any one of the third to sixth aspects, the drive source is fixedly disposed on the chain guide plate in a state of being shifted from the virtual plane. The drive shaft of the drive source is arranged along the branching direction of the pair of meshing chains and is connected to the drive sprocket via an orthogonal gear, thereby solving the above-described problem. .

According to the meshing chain type door opening and closing device of the present invention according to claim 1, in a state where they are meshed with each other so as to be opposed to each other, they are integrally rigidized and can be separated from each other so that they can be branched, so that they can advance and retreat in the horizontal direction. A pair of meshing chains to be driven; chain guide means provided with a chain storing groove for guiding and storing the meshing chains branched from each other; and a pair of meshing chains engaged with one of the pair of meshing chains. A drive sprocket that is driven to move forward and backward, a drive source that supplies drive force to the drive sprocket, and a door that is installed on the platform and is driven by a pair of meshing chains to open and close the entrance to the vehicle As compared with the case where a linear motion mechanism such as a ball cylinder is arranged to drive the door portion, the rigidity of the pair of meshing chains is reduced. In addition, the overall length of the device is shortened along the horizontal direction in which the door is driven to reduce the burden of equipment installation work, including equipment transportation work, and at the same time, the entrance and exit are closed by the door part. In addition to avoiding inadvertent intrusion of passengers and preventing passengers from falling into the gap between the platform and the vehicle, it is possible to realize safe getting on and off vehicles such as trains as well as the following unique features The effect of can be produced.
That is, according to the meshing chain type door opening and closing device according to the first aspect of the present invention, since the door portion is fixedly connected to the distal end portions of the pair of meshing chains, the thickness of the pair of meshing chains is minimized with the entire device being minimized. Since the door is driven horizontally by a pair of meshing chains with a structure in which the entire device is thinly made close to the combined size of the door and the door, the device configuration that opens and closes the entrance / exit by the door At the same time, the installation space within the platform is reduced to a minimum to ensure sufficient space for passengers to pass safely, and the narrow passage width between the stairs in the platform and the platform end is widened. Realize safe traffic for general passengers and passengers in wheelchairs, and avoid complicated installation work It can be.

  According to the mesh chain type door opening and closing apparatus according to claim 2, in addition to the effect exhibited by the mesh chain type door opening and closing apparatus according to claim 1, the door portion and the pair of mesh chain are fixedly connected to each other. Since the connecting pin is attached to the tip of the pair of meshing chains, the door portion transported in a state separated from the pair of meshing chains is attached to the tip of the pair of meshing chains on the platform. Compared to the case where the apparatus is installed with the door portion and the tip of the pair of meshing chains fixedly connected to each other in advance, the door portion and the pair of meshing chains are fixedly connected to each other with a simple operation on the platform. The complexity of the installation work can be avoided.

  According to the mesh chain type door opening / closing device according to claim 3, in addition to the effect produced by the mesh chain type door opening / closing device according to claim 1 or 2, the chain guide means includes a pair of mesh chains. The pair of meshing chains and the chain guide plate are shifted in the thickness direction from each other by being a rectangular chain guide plate provided in a virtual plane including the rigid direction and the branch direction of Compared to the case where the device is placed in the same direction, the entire device is made thinner along the thickness direction of the device, so that the installation space is narrowed to further increase the sufficient space for passengers to pass safely in the platform. Can do.

  According to the mesh chain type door opening and closing device according to claim 4, in addition to the effect exhibited by the mesh chain type door opening and closing device according to claim 3, the drive sprocket is formed on the chain guide plate and The chain guide plate and the drive sprocket are arranged in the thickness direction by being provided together with the chain guide plate in the virtual plane in a state of being accommodated in the concave drive sprocket accommodating groove opened to one side of the meshing chain. Therefore, the thickness of the entire device is further reduced as compared with the case where the devices are displaced from each other, so that an increase in the installation space of the entire device can be avoided and passengers can pass safely in the platform. The traffic space can be further expanded.

  According to the mesh chain type door opening / closing device according to claim 5, in addition to the effect produced by the mesh chain type door opening / closing device according to claim 3 or 4, the guide roller pivotally attached to the door portion Since the guide rail having a guide rail surface that is in contact with the peripheral surface of the chain guide and extends in the rigid direction is fixedly installed on the end surface of the chain guide plate, the thickness of the apparatus increases even when the chain guide plate is thinly formed. As the contact width between the guide rail surface and the guide roller is sufficiently secured while avoiding this, the door unit is thinly formed and the entrance / exit is smoothly opened and closed to allow safer getting on and off vehicles such as trains. Can be realized.

  According to the meshing chain type door opening and closing device according to claim 6, in addition to the effect exhibited by the meshing chain type door opening and closing device according to claim 3 or 4, the chain guide plate is pivotally attached to the door portion. Since it has an end surface that is in contact with the peripheral surface of the guide roller and extends in the rigid direction to become a guide rail surface, the number of parts can be increased compared to the case where a separate guide rail is provided and the door portion is driven to move forward and backward. Since the increase is avoided, an increase in the thickness of the entire apparatus can be further avoided, and the entrance / exit can be smoothly opened and closed to achieve safer getting on and off vehicles such as trains.

  According to the meshing chain type door opening and closing device according to claim 7, in addition to the effect produced by the meshing chain type door opening and closing device according to any one of claims 1 to 6, the drive source is virtually By being fixedly arranged on the chain guide plate in a state shifted from the plane, the drive shaft of the drive source is arranged along the branching direction of the pair of meshing chains, and connected to the drive sprocket via an orthogonal gear Compared to the case where the drive shaft of the drive source intersects the drive sprocket, the drive source is brought closer to the chain guide plate along the thickness direction of the drive sprocket, that is, the thickness direction of the device, so that the overall thickness of the device is reduced. In addition, the length of the device is shorter than when the door part is driven using a linear motion mechanism, so the complexity of installation work can be further avoided. .

The usage aspect figure of the meshing chain type door opening and closing apparatus which is one Example of this invention. The installation state figure of the meshing chain type door opening / closing apparatus shown in FIG. The perspective view which looked at the meshing chain type door opening / closing apparatus which opened the entrance / exit from the door part side. The perspective view which looked at the meshing chain type door opening / closing apparatus which closed the entrance / exit from the door part installation side. The perspective view which looked at the meshing chain type door opening / closing apparatus of FIG. 3 from the meshing chain installation side. The perspective view which looked at the meshing chain type door opening / closing apparatus of FIG. 4 from the meshing chain installation side. The front view which looked at the meshing chain type door opening / closing apparatus of FIG. 5 from the meshing chain installation side. The front view which looked at the meshing chain type door opening / closing apparatus of FIG. 6 from the meshing chain installation side. The enlarged view which showed a part of meshing | locking chain type door opening / closing apparatus of FIG. The side view which looked at the meshing chain type door opening / closing apparatus of FIG. 1 from the entrance / exit side. The top view which looked at the meshing chain type door opening and closing device of Drawing 1 from the upper part (a), and the top view which looked at the door opening and closing device concerning a comparative example from the upper part (b). The top view of the platform in which the meshing chain type door opening / closing apparatus of FIG. 1 was installed.

  The interlocking chain type door opening and closing device of the present invention is a pair of interlocking chains that are driven so as to be able to advance and retract in the horizontal direction by being stiffened integrally in a state where they are meshed with each other and opposed to each other, and disengaged from each other to be branched. And a drive sprocket that engages with one of the pair of meshing chains and the chain guide means provided with a chain storing groove for guiding and storing the meshing chains branched from each other and drives the pair of meshing chains so as to freely advance and retract. And a drive source for supplying driving force to the drive sprocket and a door portion that is installed on the platform and that is driven by a pair of meshing chains to open and close the entrance to the vehicle, and the door portion is a pair of meshing chains. At the same time as securing a sufficient traffic space in the platform, which is fixedly connected to the tip of the vehicle and allows passengers to pass safely Specific examples are those that can prevent the passengers from falling into the gap between the platform and the vehicle, and can safely get on and off the vehicle such as a train, thereby avoiding the complicated installation work. Any embodiment may be used.

  In addition, the pair of meshing chains used in the meshing chain type door opening and closing device of the present invention may be, for example, one single row in the chain width direction or two or more double rows in the chain width direction. However, when adopting two or more double rows in the chain width direction, the hook-like external tooth plate and the hook-like internal tooth plate that constitute one of the pair of meshing chains, The chain of the meshing chain is engaged with the hook-shaped outer tooth plate and the hook-shaped inner tooth plate constituting the other meshing chain opposite to each other in a chain-like manner in the form of multiple hooks in the chain width direction. This is more preferable because buckling that tends to occur in the width direction can be reliably suppressed and excellent chain durability can be realized.

  Further, the pair of meshing chains used in the meshing chain type door opening and closing device of the present invention may be any one not having a guide roller, that is, one having only a bush or one having a guide roller. However, when the one having only the bush is adopted, the number of chain parts can be reduced, and the weight of the chain can be reduced.

Further, the mesh chain type door opening / closing device of the present invention may be arranged on the platform with respect to the entrance / exit to open / close the entrance / exit from one side, or the mesh chain type door opening / closing device of the present invention may be installed on the platform. A single entrance / exit may be opened / closed from both sides of the entrance / exit.
Further, the meshing chain type door opening and closing device of the present invention may be mounted so as to be accommodated in a protective wall for preventing falling in the platform, so that the meshing chain and the like can be inspected from the platform side. It may be attached to a fall prevention fence.

Hereinafter, a meshing chain door opening and closing apparatus 100 according to an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1 is a usage diagram of the meshing chain type door opening and closing device according to one embodiment of the present invention, and FIG. 2 is an installation state diagram of the meshing chain type door opening and closing device shown in FIG. FIG. 3 is a perspective view of the meshing chain type door opening / closing device with the entrance / exit opened as seen from the door side, and FIG. 4 is a perspective view of the meshing chain type door opening / closing device with the entrance / exit closed from the door portion installation side. 5 is a perspective view of the meshing chain door opening / closing device of FIG. 3 as viewed from the meshing chain installation side, and FIG. 6 is a perspective view of the meshing chain door opening / closing device of FIG. 4 from the meshing chain installation side. FIG. 7 is a front view of the meshing chain door opening / closing device of FIG. 5 as viewed from the meshing chain installation side, and FIG. 8 is a meshing chain door opening / closing device of FIG. FIG. 9 is a front view seen from the side, and FIG. FIG. 10 is an enlarged view showing a part of the type door opening and closing device, FIG. 10 is a side view of the meshing chain type door opening and closing device of FIG. 1 viewed from the entrance / exit, and FIG. 11 is a meshing chain type of FIG. The top view (a) which looked at the door opening / closing apparatus from the upper side, and the top view (b) which looked at the door opening / closing apparatus which concerns on a comparative example from the upper side, FIG. 12 installs the meshing chain type door opening / closing apparatus of FIG. It is a top view of the made platform.

  As shown in FIG. 1, a meshing chain type door opening and closing device 100 according to an embodiment of the present invention is provided on a platform H and horizontally opens a door portion 150 that opens and closes an entrance E to a vehicle T such as a train. It is driven so as to be able to advance and retreat in the direction, and is installed and used in the protective wall B that accommodates the door portion 150 while avoiding the passenger P from falling on the track.

As shown in FIGS. 1 to 12, the meshing chain door opening / closing device 100 of the present embodiment is rigidized integrally in a state of being meshed with each other and opposed to each other, and can be separated from each other to be freely branched. A pair of meshing chains 110 that are driven to move forward and backward in the horizontal direction, chain guide means 120 provided with a chain storage groove 121 for guiding and storing the meshing chains branched from each other, and a pair of meshing chains 110 A driving sprocket 130 that engages with one side to drive the pair of meshing chains 110 so as to advance and retreat, a drive source 140 that supplies driving force to the driving sprocket 130, and a pair of meshing that are installed on the platform H. And a door portion 150 that is driven by the chain 110 to open and close the entrance E to the vehicle T.
As a result, as shown in FIGS. 1 and 11, the meshing chain door opening / closing device 100 drives a linear motion mechanism 210 such as a ball cylinder by a drive source 240 to drive the door portion 250 so that it can advance and retreat in the horizontal direction. Compared with the door opening and closing device 200, the overall length of the device is shortened along the rigid direction of the pair of meshing chains 110, that is, the horizontal direction in which the door portion 150 is driven, thereby reducing the burden of installation work including the device transporting operation. It is like that.
More specifically, as shown in FIG. 11, the length La1 of the door portion 150 of the meshing chain door opening and closing device 100 according to the present embodiment and the length Lb1 of the door portion 250 of the door opening and closing device 200 according to the comparative example. Are equal to each other, the length La2 from the end of the door 150 to the end of the drive source 140 is shorter than the length Lb2 from the end of the door 250 to the end of the drive source 240. 100 is reduced in size as compared with the door opening and closing apparatus 200 according to the comparative example, and reduces the burden of installation work including the transfer work of the apparatus.
Further, as shown in FIGS. 9 and 11, the meshing chain door opening / closing device 100 according to the present embodiment is configured so that the driving sprocket 130 is engaged with the meshing chain 110 at the bent portions of the pair of meshing chains 110. The overall length La is shortened to the total length of the length La1 of the door portion 150 and the diameter of the drive sprocket 130, thereby avoiding complications in apparatus installation work. .
In addition, in recent trains, the number of entrances and exits provided on the train itself has increased, and the number of entrances and exits provided on the platform has increased accordingly, and the stopping accuracy of the train and convenience for getting on and off From the problem of improvement, it is necessary to design the width of the entrance / exit provided on the platform wider than that of the entrance / exit provided on the train itself, but as shown in FIG. Since the total length of each of the two mesh chain type door opening / closing devices 100 arranged above and below is substantially equal to the total length of the door portion 150, an increase in the installation space of the mesh chain type door opening / closing device 100 on the platform can be avoided. It is possible to secure the installation space for the entrance / exit at
Further, as shown in FIGS. 1 to 8, the meshing chain door opening / closing device 100 according to the present embodiment opens and closes the entrance / exit E by a door portion 150 that is driven to move in the horizontal direction by the meshing chain 110. Thus, it is possible to avoid the passenger P from inadvertently entering the gate E to prevent the passenger P from falling into the gap between the platform H and the vehicle T and to safely get on and off the vehicle T such as a train. It is like that.
Further, as shown in FIGS. 2 to 8, 11, and 12, the meshing chain type door opening / closing device 100 is configured such that the door portion 150 is fixedly connected to the distal end portions 111 of the pair of meshing chains 110. The overall thickness Ta is reduced to a size that combines the thickness of the pair of meshing chains 110 and the thickness of the door portion 150 so that the entire apparatus is thin, and the door portion 150 is horizontally formed by the pair of meshing chains 110. As a result of being driven, a device configuration that opens and closes the entrance / exit E with the door portion 150 is realized as compared with the door opening and closing device 200 having the entire thickness Tb, and at the same time, the width W1 of the entire device including the protective wall B is minimized. Enough space is secured on the platform H that allows the passenger P to narrow and pass safely, and the stairs ST and the platform in the platform H are secured. Tohomu H and narrow passage width W2 is unrolled end-to-end is adapted to achieve a safe passage, such as passengers riding in a wheelchair.

  Furthermore, as shown in FIGS. 1, 9, and 10, the meshing chain type door opening and closing device 100 according to the present embodiment includes a pair of coupling pins 160 that connect and fix the pair of meshing chains 110 and the door portion 150 to each other. Since the door part 150 is attached to the tip part 111 of the pair of meshing chains 110 on the platform H by being attached to the tip part 111 of the meshing chain 110, the tip part 111 and the door part of the pair of meshing chains 110 in advance. Compared with the case where the apparatus is installed in a state where 150 is fixedly connected to each other, the pair of meshing chains 110 and the door portion 150 are fixedly connected to each other by a simple operation on the platform H, thereby further avoiding the complicated installation work. It is supposed to be.

  As shown in FIGS. 7 to 9 and 10, the meshing chain type door opening and closing apparatus 100 according to the present embodiment includes a chain guide unit 120 in the virtual plane S including the rigid direction and the branching direction of the pair of meshing chains 110. Compared to the case where the pair of meshing chains 110 and the chain guiding means 120 are shifted from each other in the thickness direction by the rectangular chain guide plate having the rigid direction as the longitudinal direction. Since the thickness of the pair of meshing chains 110 and the chain guide means 120 as a whole is formed thin along the thickness direction of the apparatus, it is sufficient that the installation space can be further narrowed and passengers can pass safely in the platform H. The traffic space is further expanded.

  Further, as shown in FIGS. 9 to 11, the meshing chain type door opening / closing device 100 according to the present embodiment includes a driving sprocket 130 formed on the chain guide means 120 and one side of the pair of meshing chains 110. By being provided in the virtual plane S together with the chain guiding means 120 in a state of being accommodated in the concave driving sprocket accommodating groove 122 that opens to the center, the chain guiding means 120 and the driving sprocket 130 are mutually connected along the thickness direction. Since the increase in the thickness of the entire apparatus caused by being arranged in a state shifted to the upper limit is avoided, sufficient space for the passenger P to pass safely in the platform H by further narrowing the space of the entire apparatus. The space has been expanded further.

  As shown in FIGS. 7 to 10, the meshing chain door opening / closing device 100 according to this embodiment is in contact with the peripheral surface of the guide roller 170 pivotally attached to the door portion 150 and extends in the rigid direction. Since the guide rail 180 having 181 is fixedly installed on the end surface of the chain guide means 120, the guide rail surface can be avoided while increasing the thickness of the apparatus even when the chain guide means 120 is formed thin. Since the contact width of 181 and the guide roller 170 is sufficiently secured, the entire apparatus including the door portion 150 is formed thin, and the entrance / exit E is smoothly opened / closed to realize safer getting on / off the vehicle T such as a train. It is supposed to be.

Further, in the meshing chain door opening and closing device 100 according to the present embodiment, the end surface of the chain guide means 120 is in contact with the peripheral surface of the guide roller 170 pivotally attached to the door portion 150 and extends in the rigid direction as a guide rail surface. You may combine.
In this case, the mesh chain type door opening / closing device 100 avoids an increase in the number of parts as compared with the case where the guide rail 180 is separately provided and the door portion 150 is driven to move forward and backward, so that the thickness of the entire device is further increased. In addition to avoiding this, it is possible to smoothly open and close the entrance / exit E to realize safer getting on and off the vehicle T such as a train.

  The meshing chain type door opening and closing device 100 according to the present embodiment is fixedly disposed on the chain guiding means 120 in a state where the drive source 140 is shifted from the virtual plane S, as shown in FIGS. 3, 4, 10 and 11. The drive shaft 141 of the drive source 140 is disposed along the branching direction of the pair of meshing chains 110 and connected to the drive sprocket 130 via the orthogonal gear 190, thereby driving the drive shaft 141 of the drive source 140. Compared to the case where the crossing of the drive sprocket 130 is made, the drive source 140 is brought closer to the chain guide means 120 along the thickness direction of the drive sprocket 130, that is, the thickness direction of the device, and the overall thickness of the device is reduced. Compared to the case where the linear movement mechanism 210 such as a ball cylinder is driven by the drive source 240 to drive the door portion 250. Since the length La is shorter than the length Lb of the door opening and closing device 200 according to the comparative example, which is a complication of the installation work more to further avoid.

  The meshing chain type door opening and closing device 100 of the present embodiment obtained in this way is stiffened integrally in a state of being meshed with each other and opposed to each other, and can be separated from each other so as to be able to branch, thereby moving forward and backward in the horizontal direction. A pair of meshing chains 110 that are freely driven, a chain guiding means 120 provided with a chain storage groove 121 for guiding and storing the meshing chains branched from each other, and one of the pair of meshing chains 110 are engaged. The driving sprocket 130 that drives the pair of meshing chains 110 to move forward and backward, the drive source 140 that supplies the driving sprocket 130 with driving force, and the platform H that is installed and driven by the pair of meshing chains 110. And a door portion 150 for opening and closing the entrance E to the vehicle T, and the door portion 150 is a pair of meshing chains 11. In this structure, the entire device is formed thin by reducing the thickness of the entire device to a size that combines the thickness of the pair of meshing chains 110 and the thickness of the door portion 150. Since the door part 150 is driven in the horizontal direction by the pair of meshing chains 110, an apparatus configuration for opening and closing the entrance / exit E by the door part 150 is realized, and at the same time the installation space of the apparatus in the platform H is reduced to the minimum. In addition to securing sufficient traffic space for P to pass safely, the narrow passage width between the stairs in platform H and the end of platform H is widened to realize safe traffic for passengers on wheelchairs, etc. When the apparatus is installed in a state where the tip 111 and the door 150 of the pair of meshing chains 110 are fixedly connected to each other in advance. Compared to, such as the complexity of the installation work platform H on the pair of engagement chains 110 and door 150 by a simple work in with each other in a fixed connection can be further avoided, the effect is significant.

DESCRIPTION OF SYMBOLS 100 ... Meshing | locking chain type door opening / closing device 110 ... Pair of meshing chains 111 ... Tip part of meshing chain 120 ... Chain guide means 121 ... Chain storing groove 122 ... Drive sprocket housing Groove 130 ・ ・ ・ Driving sprocket 140, 240 ・ ・ ・ Driving source 141 ・ ・ ・ Driving shaft 150, 250 ・ ・ ・ Door section 160 ・ ・ ・ Connecting pin 170 ・ ・ ・ Guide roller 180 ・ ・ ・ Guide Guide rail having a rail surface 181 ・ ・ ・ Guide rail surface 190 ・ ・ ・ Orthogonal gear 200 ・ ・ ・ Door opening and closing device 210 ・ ・ ・ Linear motion mechanism B ・ ・ ・ Protective wall E ・ ・ ・ Entrance / exit H ・ ・ ・ Platform La, Lb ... Device length La1, Lb1 ... Length of the door part La2, Lb2 ... Drive from the end of the door part Length to the end of the source P ... Passenger and passenger S ... Virtual plane T ... Vehicle ST ... Stairs Ta, Tb ... Equipment thickness W1 ... Protective wall width W2 ... Protection Aisle width from wall to stairs

Claims (7)

Guides a pair of meshing chains that are driven to move forward and backward in the horizontal direction by being stiffened together in a state where they are meshed with each other and arranged opposite to each other, and can be separated from each other so that they can be branched. A chain guide means provided with a chain storage groove for storing, a drive sprocket that engages one of the pair of meshing chains to drive the pair of meshing chains so as to move forward and backward, and a driving force applied to the drive sprocket A meshing chain type door opening and closing device comprising: a drive source for supplying a power source; and a door portion that is installed on the platform and is driven by the pair of meshing chains to open and close a vehicle entrance and exit,
The meshing chain type door opening and closing device, wherein the door portion is fixedly connected to the distal ends of the pair of meshing chains.   2. The meshing chain type door opening and closing device according to claim 1, wherein a connecting pin for fixing and connecting the door portion and the pair of meshing chains to each other is attached to the tip of the pair of meshing chains.   The chain guide means is a rectangular chain guide plate provided in a virtual plane including a rigid direction and a branching direction of the pair of meshing chains and having the rigid direction as a longitudinal direction. The meshing chain door opening and closing device according to claim 1 or 2.   The drive sprocket is provided with the chain guide plate in the virtual plane in a state where the drive sprocket is housed in a concave drive sprocket housing groove formed on the chain guide plate and opening to one side of the pair of meshing chains. The engagement chain type door opening and closing device according to claim 3, wherein   4. A guide rail having a guide rail surface that contacts a peripheral surface of a guide roller that is pivotally attached to the door portion and extends in the rigid direction is fixedly installed on an end surface of the chain guide plate. Or the meshing chain type door opening and closing apparatus of Claim 4.   The said chain guide plate has an end surface which contact | connects the surrounding surface of the guide roller pivotally attached to the said door part, and extends in the said rigid direction and becomes a guide rail surface. 4. The meshing chain door opening and closing device according to 4. The drive source is fixedly disposed on the chain guide plate in a state shifted from the virtual plane;
The drive shaft of the drive source is disposed along the branching direction of the pair of meshing chains, and is connected to the drive sprocket via an orthogonal gear. The mesh chain type door opening and closing device according to any one of the above.

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