JP6129939B2 - Platform door equipment - Google Patents

Description

  The present invention relates to a platform door device installed on a platform.

  Platform door devices are installed along the edges of the platform. While the train stops on the platform, the door of the train opens and the passengers get on and off, the door portion of the platform door device is opened, and at other times the door portion is closed. Thereby, the fall accident of the passenger from a platform, etc. can be prevented.

  Some conventional platform door devices employ a two-stage telescopic door structure that can be expanded and contracted by dividing the width direction (opening and closing direction) of the door portion into two. Japanese Patent Application Laid-Open No. 2004-151561 discloses a technique that enables a second slide door to be stored inside the first slide door using a link mechanism.

  The platform door device having a two-stage telescopic door structure can shorten the width direction of the door portion when contracted to about a half, so that the lateral length (lateral width) of the door pocket portion storing the door portion can be shortened. As a result, it is possible to shorten the interval between the opening for getting on and off between the door pockets, or to form the opening for getting on and off corresponding to both the passenger door and the passenger door having a narrow interval in the vehicle. .

JP 2000-177580 A

  In the platform door device, in order to further shorten the interval between adjacent entrances, that is, the lateral width of the door pocket, the two doors are overlapped in the direction perpendicular to the opening and closing direction (thickness direction of the door pocket). Can be stored in one door pocket.

  However, in order to open and close the two door parts, when two drive mechanisms are installed in the door pocket, the thickness direction of the door pocket may be increased, and in this case, the area occupied by the platform door device increases. Resulting in. Moreover, since two drive mechanisms are arrange | positioned at a door pocket part, the maintenance and inspection inside the door pocket part of a platform door apparatus become difficult depending on the layout inside a door pocket part.

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the platform door apparatus which can perform a maintenance etc. easily.

  In order to solve the above problems, the platform door device of the present invention employs the following means.

  A platform door device according to a reference example of the present invention is arranged on a platform side opposite to the track, a door portion, a first door portion arranged on the track side, entering and exiting a first end portion of the door pocket portion, and the track. A second door portion that enters and exits the second end portion of the door pocket portion opposite to the first end portion, and the first door portion and the second door portion within the door pocket portion. And a first drive mechanism for driving the first door portion, the first drive mechanism having a motor provided on the second end side, and the second drive mechanism. The door bottom side of the door portion has a shape that is cut out so that the motor is exposed to the inside of the platform inside the door pocket portion when the second door portion is closed.

  According to this configuration, the motor of the first drive mechanism is provided on the opposite side of the platform from the second door portion. Therefore, when the motor is accessed from the inside of the platform for maintenance or the like, the second door portion may become an obstacle. On the other hand, when the 2nd door part closes, it has the shape where the door bottom side of the 2nd door part was notched so that a motor might be exposed inside a platform. Thus, the worker can access the motor from the inside of the platform.

  In the above reference example, a second drive mechanism that is provided below the first drive mechanism between the first door portion and the second door portion and drives the second door portion; May be further provided.

  According to this configuration, when the first door portion and the second door portion are moved in and out of the door pocket portion, and the first drive mechanism and the second drive mechanism are provided to drive the first door portion and the second door portion, The second drive mechanism has a vertical positional relationship between the first door portion and the second door portion. Therefore, compared with the case where the first drive mechanism and the second drive mechanism are provided in parallel in the lateral direction, the installation space of the drive unit can be reduced, and the thickness of the door pocket can be reduced.

  Further, the cutout shape of the second door portion exposes the motor of the first drive mechanism provided above the second drive mechanism, so that it is relatively above the lower portion of the second door portion. Will be located. Therefore, contrary to the present invention, compared with the case where the motor of the first drive mechanism is provided below the second drive mechanism and the notch shape is located below the second door portion, Maintenance or the like is facilitated for the motor located behind the second door portion.

  A platform door device according to a reference example of the present invention includes a door pocket portion, a door portion that enters and exits an end portion of the door pocket portion, and a drive mechanism that drives the door portion, and the door portion is a first stage door. The second door is slidably housed inside the door, and the first door is slidably supported with respect to the door pocket, and the second door is slidable with respect to the first door. The drive mechanism drives the first stage door by a motor, drives the second stage door by the movement of the first stage door, and detects the open state or the closed state of the second stage door. The detection part which performs is further provided.

  According to this configuration, when the second stage door is not driven directly by the motor but is driven via the timing belt by the movement of the first stage door, the timing belt is broken, etc. When the transmission of force is not performed, it can be detected that there is a problem in opening and closing the second door.

The platform door device according to the present invention includes a door pocket portion, a door portion that enters and exits an end portion of the door pocket portion, and a drive mechanism that drives the door portion. second stage door is accommodated by sliding and slidably supported the second stage door together with the first stage door is slidably supported with respect to the door pocket is relative to the first stage door The drive mechanism includes a rack and pinion mechanism in which a rack gear fixedly installed in the door pocket is engaged with a pinion gear attached to the first door, and the rack and pinion mechanism is made of synthetic resin. And provided on the track side with respect to the door portion.

  According to this configuration, since the rack and pinion mechanism is made of synthetic resin and does not require greasing, the first door is a place where it is difficult to access the rack and pinion mechanism when maintenance or the like is required. A rack and pinion mechanism can be provided on the side of the track opposite to the inside of the platform across the section.

  According to the present invention, the rack and pinion mechanism provided on the track side from the door is made of synthetic resin and does not require lubrication, so that maintenance and the like can be easily performed.

It is a top view which shows the state which installed the platform door apparatus which concerns on one Embodiment of this invention on a platform, (a) is the state which closed the boarding opening, (b) is the time of boarding / exiting which opened the boarding opening. Indicates the state. It is the front view which looked at the platform door apparatus shown in FIG. 2 from the platform side. It is a perspective view which shows the platform door apparatus which concerns on one Embodiment of this invention. It is a right view which shows the internal structure of the platform door apparatus shown in FIG. It is a perspective view which shows the 1st stage door drive part which comprises the platform door apparatus shown in FIG. It is a right view which shows the internal structure of the 1st stage door drive part shown in FIG. It is a perspective view which shows the 2nd stage door drive part which comprises the platform door apparatus shown in FIG. It is a right view which shows the internal structure of the 2nd stage door drive part shown in FIG. It is a perspective view which shows the platform door apparatus which concerns on one Embodiment of this invention, and has shown the state which open | released the front surface and side surface of a door pocket part. It is a front view which shows the platform door apparatus which concerns on one Embodiment of this invention, and has shown the state which open | released the front surface of the door pocket part. 1 is a schematic cross-sectional view showing a platform door device according to an embodiment of the present invention. It is a schematic longitudinal cross-sectional view which shows the platform door apparatus which concerns on one Embodiment of this invention.

Below, platform door device 1 concerning one embodiment of the present invention is explained with reference to drawings.
<Configuration of platform door device>
The platform door apparatus 1 is arrange | positioned along the edge of the platform H of the station where a train stops, as shown in FIG. As shown in FIGS. 1 and 2, the platform door device 1 includes a plurality of door pocket portions 10 installed on the platform H, and a door portion 30 that is provided in each door pocket portion 10 and enters and exits the door pocket portion 10. .

  The door pocket 10 has a height direction of about 1350 mm, a width direction of about 800 mm, and a depth direction of about 350 mm, for example. When the door 30 on one side covers 1200 mm of the entrance / exit 3 (frontage), the entrance / exit 3 of the platform door device 1 is 2400 mm when the entrance and exit lengths of the doors 30 on both sides are symmetrical.

The platform door device 1 is provided with a drive mechanism 40, and the drive mechanism 40 slides the door 30 while expanding and contracting in two steps in the horizontal direction, so that the door 30 opens and closes the entrance / exit 3.
A pair of left and right door portions 30 are provided in the door pocket portion 10 so as to be shifted in the thickness direction of the door pocket portion 10, and the door portions 30 respectively enter and exit the door pocket portion 10. In order to extend and retract the door 30 in two directions in the left and right directions with respect to one door pocket 10, two sets of the door 30 and the drive mechanism 40 are installed. Since the basic configuration of the pair of left and right door portions 30 and the drive mechanism 40 is substantially the same, first, the configuration of the one door portion 30 and the drive mechanism 40 will be described first. 3-8 has shown an example of the internal structure of the door pocket part 10. As shown in FIG.

  The door pocket portion 10 is a hollow member having a substantially rectangular parallelepiped shape, and a bottom portion is fixedly supported by the platform H. Inside the door pocket portion 10 are housed a door portion 30 and a drive mechanism 40 that opens and closes the door portion 30. Moreover, the side panel 2 which partitions the track | orbit side and the platform H side is installed in the door pocket part 10 made into the substantially rectangular parallelepiped shape, covering an internal apparatus.

  As shown in FIG. 3, the door unit 30 includes a first stage door 31 and a second stage door 32. The first stage door 31 slides with respect to the door pocket 10, and the second stage door 32 accommodated inside the first stage door 31 slides with respect to the first stage door 31, so that the door part 30 is As a whole, it opens and closes in two steps with respect to the door pocket 10.

  As shown in FIG. 4, the first stage door 31 is slidably supported by the slide support mechanisms 20 </ b> A and 20 </ b> B with respect to the door pocket 10, and the second stage door 32 is slidably supported with respect to the first stage door 31. The mechanism 60 is slidably supported.

  The drive mechanism 40 includes a first stage door drive unit 41 that slides the first stage door 31 in the opening / closing direction with respect to the door pocket 10, and a second stage that slides the second stage door 32 in the opening / closing direction with respect to the first stage door 31. A corrugated door drive unit 50 is provided.

  As shown in FIGS. 5 and 6, the first stage door drive unit 41 includes a ball screw mechanism 44 and a slider 45. The ball screw mechanism 44 is fixedly installed on the door pocket 10, and the ball screw 43 is rotated by the motor 42. The slider 45 is fixed to the first stage door 31 and is screwed into the ball screw 43 of the ball screw mechanism 44. The first stage door drive unit 41 slides the first stage door 31 integrated with the slider 45 in a desired opening / closing direction as the ball screw 43 is rotated by the rotational force of the motor 42. In addition, the code | symbols 46 and 47 in a figure are the bearing parts which support the ball screw 43 so that rotation is possible.

  As shown in FIGS. 7 and 8, the second stage door drive unit 50 includes a rack and pinion mechanism 53, a timing belt mechanism 57, and a connecting and fixing member 58. The rack and pinion mechanism 53 includes a rack gear 51 and a pinion gear 52. The timing belt mechanism 57 has a timing belt 56 wound around a pair of sheaves 54 and 55. The connection fixing member 58 connects the second stage door 32 and the timing belt 56.

  The rack gear 51 of the rack and pinion mechanism 53 is fixedly installed in the sliding direction (opening / closing direction) of the door portion 30 with respect to the door pocket portion 10. The pinion gear 52 is rotatably attached to the first stage door 31 and meshes with the rack gear 51. When the first stage door 31 is slid with respect to the door pocket 10 by the first stage door drive unit 41, the pinion gear 52 moves in the opening / closing direction integrally with the first stage door 31. As a result, the pinion gear 52 rotates at the first stage door 31.

  The pinion gear 52 is coaxially connected to the sheave 54 disposed on the center side of the door pocket portion 10 through the rotation shaft 52a. The sheave 54 is rotated by receiving a rotational force by the rack and pinion mechanism 53, thereby driving the timing belt 56 in a desired rotational direction.

  The connection fixing member 58 is fixed to both the second stage door 32 and the timing belt 56 of the timing belt mechanism 57 and integrally connects the second stage door 32 and the timing belt 56.

  With the above-described configuration, when the pinion gear 52 is rotated, the coaxial sheave 54 is also rotated at the same rotational speed to drive the timing belt 56. Therefore, the connecting and fixing member is driven at the same speed as the moving speed of the timing belt 56. 58 and the second stage door 32 slide, and the second stage door 32 opens and closes.

  As for the gear ratio of the rack and pinion mechanism 53 and the timing belt mechanism 57, the relative movement speed of the first stage door 31 with respect to the door pocket 10 and the relative movement speed of the second stage door 32 with respect to the first stage door 31 are as follows. It is desirable to set so that the speed is the same. Thereby, the absolute moving speed of the second stage door 32 with respect to the door pocket 10 is twice that of the first stage door 31 with respect to the door pocket 10. Therefore, the first stage door 31 and the second stage door 32 have the same timing to reach the open position or the closed position, and it is easy to ensure the safety of passengers.

As shown in FIGS. 4 and 6, the slide support mechanisms 20 </ b> A and 20 </ b> B slidably support the upper or lower portion of the first door 31 with respect to the door pocket 10.
The lower slide support mechanism 20 </ b> A includes a guide rail 21 fixed to the bottom surface of the door pocket 10 and an engagement slide portion 22 fixedly attached to the lower surface of the first stage door 31. 22 is slidably engaged with the guide rail 21. Since the engagement slide portion 22 has a substantially U-shaped cross section and is engaged so as to straddle the guide rail 21, it does not come off the guide rail 21. Moreover, in this embodiment, the engagement slide part 22 is provided in the edge part vicinity of the door pocket part 10 side so that it may not remove | deviate from the guide rail 21 even in the position where the 1st step door 31 was pulled out most. Note that the number of engagement slide portions 22 and the like are not particularly limited.

  The upper slide support mechanism 20B includes a guide rail 23 fixed to the inner upper surface of the door pocket 10 and a pair of rollers 24 and 24 fixed to the upper surface of the first door 31. 24 moves while rotating on both contact surfaces of the guide rail 23. Since the pair of rollers 24 and 24 sandwich the guide rail 23 from both sides, it is possible to prevent the first door 31 from moving sideways in a direction perpendicular to the sliding direction. Therefore, the slide support mechanism 20B enables the first stage door 31 to slide smoothly in cooperation with the slide support mechanism 20A described above.

As shown in FIGS. 7 and 8, the slide support mechanism 60 supports the first stage door 31 so that the side surface of the second stage door 32 can slide. The slide support mechanism 60 has a pair of upper and lower guide rails 61 fixed to the side wall surface of the first step door 31 and a substantially cross section fixedly installed to engage with the guide rail 61 on the side wall surface of the second step door 32. A U-shaped engagement slide portion 62 is provided. In this embodiment, two engagement slide portions 62 are provided for each guide rail 61, and the second stage door 32 can be smoothly slid by mutual engagement.
In addition, the engagement slide part 62 is provided in the vicinity of the edge part by the side of the door pocket part 10 so that it may not remove | deviate from the guide rail 61 even in the position where the 2nd door 32 was pulled out most.

<Opening and closing operation of platform door device>
Hereinafter, the opening / closing operation | movement of the platform door apparatus 1 is demonstrated.
When opening the door part 30 which has made the boarding opening 3 closed, the motor 42 is rotated in a predetermined direction. As a result, the ball screw 43 rotates in the same direction as the rotation of the motor 42, and the slider 45 and the first step door 31 are moved in the opening direction (the direction in which they are stored in the door pocket 10). At the same time, the rotation shaft 52a of the pinion gear 52 meshed with the rack gear 51 moves in the opening direction, and the pinion gear 52 rotates counterclockwise (in the case of FIG. 3).

  Then, the sheave 54 coaxial with the rotating shaft 52a also moves in the opening direction while rotating in the same direction, and drives the timing belt 56. When the timing belt 56 is driven, the connection fixing member 58 and the second door 32 fixed to the timing belt 56 also move in the opening direction at the same speed. Therefore, it is possible to perform an opening operation in which the first stage door 31 and the second stage door 32 are interlocked with one motor 42.

  On the other hand, the motor 42 is rotated in the reverse direction when the door 30 having the opening for getting on and off is in the closed state. As a result, the first step door 31 and the second step door 32 slide in the opposite direction in conjunction with the opening operation described above. Therefore, it is possible to perform a closing operation in which the first stage door 31 and the second stage door 32 are interlocked with one motor 42.

  As described above, the drive mechanism 40 has a simple structure with one motor 42 and can slide the first-stage door 31 and the second-stage door 32 by two-stage expansion and contraction, and can open and close the entrance opening 3. become.

<About two sets of door and drive mechanism>
Next, with reference to FIGS. 9-12, the two sets of door parts 30 and the drive mechanism 40 which are accommodated in the door pocket part 10 are demonstrated.
The platform door device 1 is provided with two sets of door portions 30, that is, a door portion 30 </ b> A disposed on the track side, and a door portion 30 </ b> B disposed on the platform inner side opposite to the track side. . The door portion 30A enters and exits the first end portion 10a which is one end of the door pocket portion 10, and the door portion 30B has a second end portion 10b which is the other end of the door pocket portion 10 opposite to the first end portion 10a. Go in and out. The door portion 30A has a first step door 31A and a second step door 32A, and the door portion 30B has a first step door 31B and a second step door 32B.

  The drive mechanism 40A drives the door 30A, and the drive mechanism 40B drives the door 30B. The drive mechanism 40A and the drive mechanism 40B are provided between the door portion 30A and the door portion 30B inside the door pocket portion 10, as shown in FIGS. As shown in FIGS. 9, 10, and 12, the drive mechanism 40 </ b> A is located approximately in the middle in the height direction of the door pocket 10, and the drive mechanism 40 </ b> B is provided below the drive mechanism 40 </ b> A. It is located at a height close to the bottom in the height direction.

  Accordingly, the drive mechanism 40A and the drive mechanism 40B are in a vertical positional relationship between the door portion 30A and the door portion 30B. Therefore, compared with the case where the drive mechanism 40A and the drive mechanism 40B are provided in parallel in the horizontal direction (horizontal direction), the installation space for the drive mechanisms 40A and 40B can be reduced, and the thickness of the door pocket 10 can be reduced.

  The motor 42A in the drive mechanism 40A is provided on the second end 10b side inside the door pocket 10 and the motor 42B in the drive mechanism 40B is provided on the first end 10a side. The motors 42A and 42B transmit the rotational force to the ball screw 43 via the timing belt 48, respectively.

<About the cutout of the first door>
The first step door 31B of the door portion 30B located inside the platform has a cutout portion 34 cut out in a concave shape on the door bottom side. As shown in FIGS. 9 and 10, when the door portion 30B is completely closed, the first stage door 31B is in a state where most of the first step door 31B has come out to the entrance opening 3 side, and the remaining portion is the slide support mechanism 20A. , 20B, it is supported by the door pocket 10 and thus remains in the door pocket 10.

  The notch 34 is formed in a portion remaining in the door pocket 10 of the first step door 31B when the door 30B is closed. The notch 34 is formed approximately in the middle in the height direction of the first door 31B so that the motor 42A is exposed to the inside of the platform inside the door pocket 10 when the door 30B is closed. The depth and width of the notch 34 are determined according to the installation position and size of the motor 42A.

  According to the present embodiment, the motor 42A of the drive mechanism 40A is provided on the track side with respect to the door portion 30B. Therefore, when accessing the motor 42A from the inside of the platform for maintenance or the like, the door 30B may be an obstacle. On the other hand, in this embodiment, when the door part 30B is closed, the door bottom side of the door part 30B is cut out so that the motor 42A is exposed to the inside of the platform. As a result, the worker can access the motor 42A from the inside of the platform for maintenance or the like.

  The cutout portion 34 of the door portion 30B is positioned relatively above the lower portion of the door portion 30B in order to expose the motor 42A of the drive mechanism 40A provided above the drive mechanism 40B. Therefore, contrary to the present embodiment, the worker is provided behind the door 30B as compared with the case where the motor of the drive mechanism 40A is provided below the drive mechanism 40B and the cutout shape is located below the door 30B. Maintenance and the like are facilitated with respect to the motor 42 </ b> A located in the position.

  Moreover, since the motor 42B is provided in the 1st end part 10a side of the door pocket part 10, when the door part 30A closes, the door part 30A does not become obstructive. Therefore, even if the motor 42B of the drive mechanism 40B is provided below the drive mechanism 40A, maintenance and the like are relatively easy.

<About the detector>
Whether the first stage door 31 is opened or closed is determined by detecting the rotational speed or torque of the motor 42 since the first stage door 31 is driven by the motor 42.
The power generated by the movement of the first stage door 31 is transmitted to the second stage door 32 via the timing belt 56. Therefore, when the timing belt 56 is cut, the second stage door 32 does not move in the same manner as the first stage door 31, and therefore the opening / closing of the second stage door 32 cannot be detected using the motor 42. Therefore, a sensor for detecting opening / closing of the second door 32 is separately provided.

  A second stage door opening detection sensor 12 is fixed to the door pocket 10 at a predetermined position. The second stage door open detection sensor 12 is, for example, an optical sensor. When the second stage door 32 is normally open, the second stage door 32 is detected and the second stage door 32 is in a closed state. When it remains, the second door 32 is not detected.

  Further, the second stage door close detection sensor 14 is fixed to the end of the first stage door 31 on the second stage door 32 side, and the end of the second stage door 32 on the first stage door 31 side is The second-stage door closing detection reflecting portion 16 is fixed. The second stage door close detection sensor 14 is, for example, an optical sensor, and detects the light reflected by the second stage door close detection reflecting portion 16 when the second stage door 32 is normally closed. When the second stage door 32 remains in the open state, the light does not reach the second stage door close detection reflecting portion 16, and therefore no light is detected.

  The second stage door open detection sensor 12 detects whether or not the second stage door 32 is open when it is determined that the first stage door 31 is open. Normally, when the first step door 31 is in an open state and the first step door 31 is stored in the door pocket 10, the second step door 32 is also stored in the first step door 31. Therefore, when the first step door 31 is in the open state, the second step door opening detection sensor 12 fixed to the door pocket portion 101 can detect that the second step door 32 is present. It is determined that the corrugated door 32 has been normally opened. On the other hand, when the first stage door 31 is in the open state, when the second stage door open detection sensor 12 cannot detect the presence of the second stage door 32, the opening operation of the second stage door 32 is performed. It is determined that some abnormality has occurred.

  The second stage door close detection sensor 14 detects whether or not the second stage door 32 is closed when it is determined that the first stage door 31 is closed. Normally, when the first step door 31 is closed and the first step door 31 comes out of the door pocket 10, the second step door 32 also comes out of the first step door 31. Therefore, when the first stage door 31 is closed, the second stage door close detection sensor 14 fixed to the end of the first stage door 31 on the second stage door 32 side is closed to the second stage door. When the light reflected by the detection reflecting portion 16 is detected, it is determined that the second door 32 is normally closed. On the other hand, when the first stage door 31 is in the closed state, when the second stage door opening detection sensor 14 cannot detect light, it is determined that some abnormality has occurred in the closing operation of the second stage door 32. Is done.

  From the above, in the present embodiment in which the second stage door 32 is not driven directly by the motor but is driven via the timing belt by the movement of the first stage door 31, the timing belt is broken, etc. Even when the transmission of force due to movement is no longer performed, it can be detected that there is a problem in opening and closing the second door 32.

<About the rack and pinion mechanism of the door>
The rack and pinion mechanism 53 of the door portion 30 </ b> A located on the track side is made of synthetic resin for both the rack gear 51 and the pinion gear 52.
If the rack and pinion mechanism 53 is made of non-greased synthetic resin, no lubrication is required and maintenance is not required. Therefore, the rack and pinion mechanism 53 is difficult to access when maintenance is required. Can be provided. For example, the rack and pinion mechanism 53 of the door portion 30A is provided on the track side with respect to the door portion 30A. As a result, the side plate panel 2 of the door pocket 10 can be provided with a maintenance opening only in the side plate panel 2 inside the platform, and the maintenance side opening can not be provided in the side plate panel 2 on the track side.

<About modification>
In the above-described embodiment, a case where the door 30 has a two-stage expansion / contraction structure in the case where the notch is provided on the door bottom side of the door or the two drive mechanisms are arranged in a vertical positional relationship will be described. However, the present invention is not limited to this example. For example, the present invention can also be applied to a case where the door portion is composed of a single panel. Moreover, it is not always necessary to combine both the case where the notch is provided on the door bottom side of the door and the case where the two drive mechanisms are arranged in a vertical positional relationship.

  Moreover, although the said embodiment demonstrated the case where the 1st door 31 and the 2nd door 32 were driven by the ball screw mechanism 44, the rack & pinion mechanism 53, and the timing belt mechanism 57, this invention is this. It is not limited to examples. Other transmission mechanisms may be applied as long as the first stage door 31 is a mechanism that is directly driven by a motor and the second stage door 32 is driven by the movement of the first stage door 31.

  Furthermore, in the above-described embodiment, the synthetic resin rack and pinion mechanism 53 that drives the detection unit that detects the open state or the closed state of the second stage door 32 and the second stage door 32A of the door 30A on the track side. However, although the case where the notch portion 34 is provided on the door bottom side of the door portion 30B and the case where the two drive mechanisms 40A and 40B are arranged in the vertical positional relationship have been described, the present invention is not limited to this example. . Even when these configurations are not provided, a detection unit or a synthetic resin rack and pinion mechanism can be applied as long as the platform door device has a two-stage stretchable structure.

1 Two-stage telescopic home door device (home door)
2 side panel 3 opening for getting on and off 10 door pocket 10a first end 10b second end 12 second stage door open detection sensor (detection unit)
14 Second-stage door close detection sensor (detection unit)
16 Second stage door closing detection reflecting portion 20A, 20B, 60 Slide support mechanism 21, 23, 61 Guide rail 22, 62 Engagement slide portion 24 Roller 30 Door portion 30A Door portion (first door portion)
30B Door (second door)
31, 31A, 31B First stage door 32, 32A, 32B Second stage door 34 Notch 40 Drive mechanism 40A Drive mechanism (first drive mechanism)
40B Drive mechanism (second drive mechanism)
41 First-stage door drive unit 42, 42A, 42B Motor 43 Ball screw 44 Ball screw mechanism 45 Slider 48 Timing belt 50 Second-stage door drive unit 51 Rack gear 52 Pinion gear 52a Rotating shaft 53 Rack & pinion mechanism 54, 55 Sheave 56 Timing belt 57 Timing belt mechanism 58 Connecting and fixing member H Platform

Claims (1)

Tozabu part,
A door part that enters and exits an end of the door pocket part;
A drive mechanism for driving the door part;
With
The door portion is housed by sliding the second step door inside the first step door, and the first step door is slidably supported with respect to the door pocket portion , and the second step door is Slidably supported with respect to the first door,
The drive mechanism has a rack and pinion mechanism in which a rack gear fixedly installed in the door pocket portion meshes with a pinion gear attached to the first stage door,
The rack and pinion mechanism is made of synthetic resin, and is a platform door device provided closer to the track side than the door portion.

Images