JP2019156274A - Movable platform fence - Google Patents

Abstract

To provide a movable platform fence of a double sliding door type that is advantageous for widening a getting on/off opening and reducing manufacturing costs, size, and weight.SOLUTION: A movable platform fence 10 constitutes a pantograph mechanism including a first link 71 connected to a first position P1 of a forefront-side door panel 20, a second link 72 whose one end part is connected to the first link 71 and the other end part is connected to a second position P2 of a door pocket part 40, a third link 73 whose one end part is connected to an intermediate part of the first link 71 and the other end part is connected to a third position P3 of a rear-side door panel 30, and a fourth link 74 whose one end part is connected to the third position P3 and the other end part is connected to an intermediate part of the second link 72. The first link 71 to the fourth link 74 are expandable/contractible with the second position P2 as an origin by moving the rear-side door panel 30 by a driving part 12 to move the third position P3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a movable home fence.

  The movable platform fence is required to have a wide opening so that it can accommodate various train configurations with different vehicle door positions and widths, and deviations in the train stop position. A movable home fence called “double slide type” or “two-stage sliding door type” that accommodates a plurality of door panels is known as one of the solutions (see, for example, Patent Documents 1 to 4).

JP 2000-177580 A JP 2000-108890 A JP 2000-16281 A JP 2010-42812 A

  The present invention has also been devised as a first object to make the opening wider.

  In addition, the second object of the present invention is to realize a configuration that is advantageous for reducing the manufacturing cost, size, and weight. That is, in the configuration disclosed in Patent Document 4, since the motor or the like moves together with the first door (first door panel), the electric wire or the like connected to the motor also moves. For this reason, the electric wires and the like are required to have durability enough to withstand repeated bending and abrasion, and it is necessary to attach various protective members to prevent disconnection, which has been a factor of high cost. In addition, since the drive unit is attached to the first door, the first door becomes heavier, and a large drive unit corresponding to a high load must be provided. And a door pocket will become heavy and large in order to ensure the large internal space for a large sized drive unit to move, supporting the heavy weight of a 1st door. Large and heavy movable platform fences inevitably evaded because they occupy the platform and may require reinforcement work for installation. In addition, for example, a movable platform fence with a high height may have a poor visibility on the platform when the safety of the train crews and crews when the door is opened and closed.

  A first invention for solving the above problems includes a front door panel, a rear door panel that supports the front door panel so as to be movable in an opening / closing direction, a door pocket portion that supports the rear door panel so as to be movable in an opening / closing direction, A drive unit that moves the rear door panel relative to the door pocket, a first link having one end connected to the first position of the front door panel, one end connected to the other end of the first link, and the like A second link having an end connected to the second position of the door pocket, a third end connected to the middle of the first link, and a second end connected to the third position of the rear door panel. A link, and a fourth link having one end connected to the third position and the other end connected to an intermediate portion of the second link, the rear door panel being moved by the driving unit, and 3 positions move And the first to fourth links constitute a telescopic pantograph mechanism with the second position as a base point, the pantograph mechanism sandwiching a reduced state, and the first position is a front side of the second position. It is a movable home fence that opens and closes by transitioning between two states of an extended state when the door is closed and an extended state when the door is opened when the first position is behind the second position.

  According to 1st invention, if a rear door panel is moved by a drive part, a front door panel can be moved to the same direction as a rear door panel by the interlocking | linkage of a 1st-4th link. Therefore, in the case where the opening can be made wider and a movable home fence with the same opening width is realized, the length in the width direction (opening / closing direction) of the door pocket portion can be made smaller than the conventional one. Therefore, it is possible to provide a movable home fence that is advantageous in terms of manufacturing cost, size, and weight reduction.

  In the second invention, the first position is on the lower rear side of the front door panel, the second position is higher than the first position, and the third position is in the height direction. The movable home fence according to the first aspect of the present invention is at an intermediate height between the first position and the second position.

The third invention is the movable home according to the first or second invention, wherein the third position is in a frame part on the rear side of the rear door panel and is located in the door pocket part in the extended state when the door is closed. It is a fence.
According to the second or third invention, the first link that pushes and pulls the front door panel is connected to the second link that swings in the door pocket portion from the second position, and is opened and closed. Functions as a rod that bends appropriately. Therefore, it is possible to keep the height of the door pocket portion low even if the width of the door panel is increased as well as the same effect as the first invention can be obtained.

The front view which looked at the movable platform fence from the platform side, and was the figure which showed the fully closed state. AA sectional drawing of FIG. BB sectional drawing of FIG. It is a figure for demonstrating operation | movement of a movable home fence, Comprising: Partial sectional drawing which shows a fully closed state. It is a figure for demonstrating operation | movement of a movable home fence, Comprising: Partial sectional drawing which shows the example of the movable home fence of an intermediate state from a fully closed state to a fully open state. It is a figure for demonstrating operation | movement of a movable home fence, Comprising: The partial cross section figure which shows the example of the movable home fence of a full open state. The front view of the partial cross section display for demonstrating the structure of the modification of a movable home fence.

  Examples of embodiments of the present invention will be described below, but it is needless to say that forms to which the present invention can be applied are not limited to the following embodiments.

  FIG. 1 is a front view of the movable platform fence as viewed from the platform side, and shows a fully closed state. However, the door pocket portion is shown as a longitudinal sectional view. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 3 is a cross-sectional view taken along line BB in FIG.

The movable platform fence 10 of the present embodiment is a “double sliding door type” platform fence in which two door panels, a front door panel 20 and a rear door panel 30, can be accommodated in the door pocket portion 40.
The movable platform fence 10 of the present embodiment has the front door panel 20 and the rear door panel 30 inserted and removed from the left side toward the front of the door pocket portion 40, and the door pocket portion 40 is installed on the right side of the vehicle entry / exit position when viewed from the platform 3. The “left installation type” in which the structure is reversed left and right, that is, the front door panel 20 and the rear door panel 30 are taken in and out from the right side of the door pocket 40 and viewed from the platform 3. It can also be set as the structure by which the door pocket part 40 is installed in the left side of a vehicle getting on / off position.

  The front door panel 20 has a transparent panel 22 inside the frame portion 21, so that the platform side and the track side can be seen through.

  The door pocket side of the front door panel 20 is inserted into the frame portion 31 of the rear door panel 30. The upper portion of the frame portion 21 has a slider 23 which is engaged with a guide rail 33 provided on the upper portion of the frame portion 31 of the rear door panel 30 to form a first linear motion mechanism portion 51. Yes. Similarly, the guide rail 24 is provided at the lower portion of the frame portion 21, and this engages with the slider 34 provided at the lower portion of the frame portion 31 of the rear door panel 30 to form the second linear motion mechanism portion 52. Yes. That is, the front door panel 20 is supported so as to be movable in the opening / closing direction with respect to the rear door panel 30.

  The rear door panel 30 has a transparent panel 32 inside the frame portion 31 so that the platform side and the track side can be seen through.

  The door pocket side of the rear door panel 30 is inserted into the door pocket portion 40. The upper portion of the frame portion 31 has a slider 35, which is engaged with a guide rail 45 provided on the upper portion of the door pocket portion 40, thereby forming a third linear motion mechanism portion 53. Similarly, a guide rail 36 is provided at the lower portion of the frame portion 31, and this engages with a slider 46 provided at the lower portion of the door pocket portion 40, thereby forming the fourth linear motion mechanism portion 54. That is, the rear door panel 30 is supported so as to be movable in the opening and closing direction with respect to the door pocket portion 40.

  The door pocket portion 40 includes a drive unit 12 that moves the rear door panel 30 in the door opening / closing direction and a control device 14 that controls the operation of the drive unit 12. Of course, other equipment can be incorporated as appropriate.

The drive unit 12 of this embodiment is a belt drive type,
1) a driving pulley 12d fixed to the door pocket 40;
2) a driven pulley 12j fixed to the rear door panel;
3) An annular toothed belt 12v laid across both pulleys;
4) a belt clamp 12c fixed to the rear door panel 30 with respect to the toothed belt 12v;
5) an electric motor 12m driven and controlled by the control device 14,
6) A reduction mechanism 12g that decelerates the rotation of the output shaft of the electric motor 12m and transmits it to the drive pulley 12d.
The drive unit 12 may employ other types of linear motion mechanisms. For example, a type using a ball screw or a type using a rack and pinion can be selected.

  The control device 14 includes electronic / electrical components for driving and controlling the electric motor of the drive unit 12 in accordance with an external drive command.

  And the front door panel 20, the back door panel 30, and the door pocket part 40 are connected by the pantograph mechanism.

  The pantograph mechanism includes a first link 71, a second link 72, a third link 73, and a fourth link 74.

  The first link 71 is a rod member that is pivotally supported at both ends by a swing shaft and swingable in the vertical direction, and one end portion (left end portion in the example of FIG. 1) of the frame portion 21 of the front door panel 20. The first position P <b> 1 set at the lower part is connected, and the other end is connected to the second link 72.

  The second link 72 is a rod member that is pivotally supported at both ends by a swing shaft and can swing in the vertical direction, and one end (the lower end in the example of FIG. 1) is the other end of the first link 71. (The right end in the example of FIG. 1) and the other end is connected to the second position P2 set at the lower end of the second position bracket 47 suspended from the lower surface of the upper frame of the door pocket 40.

  The third link 73 is a rod member that is pivotally supported at both ends by a swing shaft and can swing in the vertical direction. One end portion (the lower end portion in the example of FIG. 1) is an intermediate portion of the first link 71. The other end (upper end in the example of FIG. 1) is connected to a third position P3 set on a third position bracket 37 fixed to the frame 31 of the rear door panel 30.

  The fourth link 74 is a rod member that is pivotally supported at both ends by a swing shaft and swingable in the vertical direction, and one end portion (the left end portion in the example of FIG. 1) is connected to the third position P3. The other end portion (the right end portion in the example of FIG. 1) is connected to the intermediate portion of the second link 72.

  Next, the operation from the fully closed state to the fully open state in the movable home fence 10 of the present embodiment will be described.

  FIG. 4 is a diagram for explaining the operation of the movable home fence 10 and is a partial cross-sectional view showing a fully closed state. Arrows indicating the direction of motion and the action of force are shown at key points in the figure. The pantograph mechanism including the first link 71, the second link 72, the third link 73, and the fourth link 74 is in an extended state at the time of closing when the first position P1 is on the front side (door closing direction side) from the second position P2. is there.

  From this state, when the driving pulley 12d is driven counterclockwise when viewed from the platform side (arrow A1), the toothed belt 12v is driven counterclockwise when viewed from the platform side. Since the frame 31 of the rear door panel 30 is connected to the toothed belt 12v by the belt clamp 12c, the rear door panel 30 starts to be drawn into the door pocket 40 (arrow A2).

The movement of the rear door panel 30 is a force that pushes the second link 72 in the door opening direction (right direction in the figure) by the fourth link 74 via the third position bracket 37 (arrow A3).
Since the second link 72 is fixed relative to the door pocket 40 at the second position P2, the second link 72 pushed by the fourth link 74 is based on the second position P2 (in this case, As a fulcrum), the lower end swings in the door opening direction (arrow A4).

  The first link 71 is pulled in the door opening direction by this swinging, and the front door panel 20 is moved in the direction of the door pocket portion 40 (arrow A5). When viewed from the platform side, it appears that the front door panel 20 and the rear door panel 30 begin to be drawn into the door pocket 40 at the same time.

FIG. 5 is a partial cross-sectional view showing an example of the movable home fence in an intermediate state from the fully closed state to the fully open state, and shows arrows indicating the operation direction and the action of force at important points.
The electric motor 12m continues to rotate counterclockwise as viewed from the platform side (arrow A1 ′), and the rear door panel 30 continues to move in the door opening direction (arrow A2 ′).
In the pantograph mechanism, the fourth link 74 continues to push the second link 72 in the door opening direction (arrow A3 ′) while continuing to the contracted state, and the swing of the second link 72 is also continued (arrow A4 ′). The front door panel 20 continues to move in the door opening direction via the first link 71 (arrow A5 ′).

FIG. 6 is a partial cross-sectional view showing an example of the movable home fence 10 in a fully opened state.
The electric motor 12m is stopped after a predetermined number of rotations. Alternatively, when the front door panel 20 or the rear door panel 30 drawn into the door pocket portion 40 reaches a predetermined position and a limiter switch (not shown) is operated, the movable home fence 10 is fully opened, and the platform The opening for getting on and off is fully open. At this time, the pantograph mechanism is in an open state when the first position P1 is on the rear side (door opening direction side) from the second position P2. That is, the movable home fence 10 is opened when the pantograph mechanism shifts from the extended state when the door is closed to the extended state when the door is opened with the reduced state interposed therebetween.

  In order to return the movable home fence 10 from the fully open state to the fully closed state, the electric motor 12m is rotated in the reverse direction and the drive pulley 12d is driven clockwise as viewed from the platform side. Then, the toothed belt 12v also rotates clockwise as viewed from the platform side, and the rear door panel 30 moves in the door closing direction together with the belt clamp 12c and is pulled out from the door pocket 40.

  When the rear door panel 30 moves in the door closing direction, the third link 73 pulls the first link 71 in the door closing direction via the third position bracket 37. At the upper end of the first link 71, the second link 72 acts like a stick to the second position P2, so it hardly moves, and as a result of being pulled by the third link 73, the first link 71 has a lower end. Swings in the door closing direction. Thereby, the front door panel 20 also starts to be pulled out from the door pocket portion 40 in conjunction with it. Eventually, the state returns to the fully closed state shown in FIG. 4 through the intermediate state shown in FIG. That is, the movable home fence 10 is closed when the pantograph mechanism shifts from the extended state when the door is opened to the extended state when the door is closed with the reduced state interposed therebetween.

  As described above, according to the present embodiment, the opening can be made wider. Further, since the door panel is not provided with the drive unit 12 and is installed in the door pocket 40, it is more advantageous in reducing the manufacturing cost, size, and weight than the structure in which the drive unit is attached to the door panel as in Patent Document 4. Can be realized.

  In addition, by configuring the pantograph mechanism using the first to fourth links with the first to third positions fixed, the increase in the height of the door pocket portion with respect to the increase in the lateral width (width in the opening and closing movement direction) of the door panel is suppressed. it can. If it is assumed that the width of the door panel (width in the opening and closing movement direction) must be increased in order to widen the opening, and the height of the door pocket must be increased, then the height of the door pocket. As a result, there are cases where the train crew and staff members have poor visibility on the platform, for example, when checking safety associated with door opening and closing. However, in this embodiment, since the pantograph mechanism is adopted and the link mechanism can sandwich the contracted state in the process of transition from the extended state when the door is opened to the extended state when the door is closed, the lateral width of the door panel (width in the opening and closing movement direction) The increase in the height of the door pocket with respect to the increase in the height can be suppressed.

[Modification]
In addition, the form which can apply this invention is not restricted to the said embodiment, A component can be added / omitted / changed suitably.

  For example, like the movable home fence 10W illustrated in FIG. 7, the “right installation type” movable home fence 10 shown in the above embodiment, and the “left installation type” whose structure is reversed left and right By integrating the door pocket portion 40 and the control device 14 together, a “double-opening type” can be configured.

DESCRIPTION OF SYMBOLS 3 ... Platform 10 ... Movable platform fence 12 ... Drive part 12c ... Belt clamp 12d ... Drive pulley 12g ... Deceleration mechanism part 12j ... Driven pulley 12m ... Electric motor 12v ... Toothed belt 14 ... Control device 20 ... Front door panel 21 ... Frame Part 22 ... Transparent panel 23 ... Slider 24 ... Guide rail 30 ... Rear door panel 31 ... Frame part 32 ... Transparent panel 33 ... Guide rail 34 ... Slider 35 ... Slider 36 ... Guide rail 37 ... Third position bracket 40 ... Door part 45 ... Guide rail 46 ... Slider 47 ... Second position bracket 51 ... First linear motion mechanism part 52 ... Second linear motion mechanism part 53 ... Third linear motion mechanism part 54 ... Fourth linear motion mechanism part 71 ... First link 72 ... 2nd link 73 ... 3rd link 74 ... 4th link P1 ... 1st position P2 ... 2nd position P3 ... 3rd position

Claims (3)

The front door panel,
A rear door panel that supports the front door panel movably in the opening and closing direction;
A door pocket that supports the rear door panel movably in the opening and closing direction;
A drive unit for moving the rear door panel relative to the door pocket;
A first link having one end connected to a first position of the front door panel;
A second link having one end connected to the other end of the first link and the other end connected to a second position of the door pocket;
A third link having one end connected to an intermediate portion of the first link and the other end connected to a third position of the rear door panel;
A fourth link having one end connected to the third position and the other end connected to an intermediate portion of the second link;
The rear door panel is moved by the drive unit and the third position is moved, so that the first to fourth links constitute a telescopic pantograph mechanism based on the second position, and the pantograph 2 between the extended state when the door is closed when the mechanism is in the contracted state and the extended position when the door is open when the first position is behind the second position. A movable home fence that opens and closes by transitioning between two states. The first position is on the lower rear side of the front door panel;
The second position is higher than the first position;
The third position is at an intermediate height between the first position and the second position in the height direction.
The movable home fence according to claim 1. The third position is in a frame part on the rear side of the rear door panel, and is located in the door pocket part in the extended state when the door is closed.
The movable home fence according to claim 1 or 2.

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