JP7444668B2 - home fence - Google Patents

Description

The present invention relates to a platform fence installed on a station platform.

As a platform fence installed on a station platform, a multi-stage sliding door type platform fence in which a plurality of movable doors are slid forward and backward from a single door pocket is known.

For example, Patent Document 1 discloses a two-stage sliding door type platform fence that drives two stages of movable doors in synchronization and uses a timing belt and a pulley as a drive mechanism. In this platform fence, the front end door (the door on the advancing side of the movable door in the advancing/retracting direction of the two stages) and the rear end door (the door on the retreating side of the two stages in the advancing/retracting direction) open and close in conjunction with each other. The opening/closing speed of the front end door is twice that of the rear end door.

Unexamined Japanese Patent Publication No. 2014-4959

In the case of the platform fence disclosed in Patent Document 1, a timing belt is used as the drive mechanism, so if the belt wears out or the tension decreases, this will lead to a decrease in functionality, so periodic inspection is required.
In addition , there are platform fences that use timing belts, wires, chains, etc. as string-like drive transmission members, but wires may become loose due to wire breakage, rust, or a decrease in tension. A thorough inspection is essential. Additionally, if a chain is used, periodic inspections are essential, as wear and rust on the pins, loosening due to reduced tension, etc., will reduce transmission efficiency. Since periodic inspections are a burden on businesses, a platform fence with multi-stage sliding doors that can extend the inspection cycle is desired.

In addition, platform fences are often installed as double-door platform fences in sets of two to match the spacing between train doors. If only one type of train enters the line, the distance between the two platform fences can be secured, so covers and emergency doors can be attached to door pockets. However, as the number of types of trains entering the line increases, and the distance between the two platform fences, or in other words, the boarding and alighting gates, is set wider in order to accommodate various numbers of doors and door spacing, the width of the door pocket (the length in the longitudinal direction of the platform) is inevitably reduced. ) becomes larger.

On the other hand, if the entrances are set wide, the distance between the entrances becomes smaller. Therefore, it may be difficult to install an emergency door. In particular, at stations where mutual access is carried out, it becomes even more difficult to install emergency doors when there are many types of trains, including those with many doors and short door spacing (distance between entrances and exits). Become.

The present invention was devised to meet these demands. The first objective is to provide a technology for a multi-stage sliding door type platform fence that allows longer inspection cycles than before. The second objective is to provide a double-door platform fence technology that can secure installation space for emergency doors in addition to achieving the first objective.

A first invention for solving the above problems is a multi-stage sliding door type platform fence in which a first door and a second door are slid in conjunction with each other in a door discharge direction from a door pocket, in which a door discharge side of the door pocket is provided. a first pinion arranged and driven by a motor; a first rack provided on the first door and which constitutes a first drive unit by meshing with the first pinion; a second pinion pivotally supported by the first door; a second rack provided in the door compartment and configured to constitute a second drive unit by meshing with the second pinion; A third rack provided on the second door, which meshes with the second pinion on a side opposite to a position where the second rack meshes with the second pinion, thereby forming a third drive unit. a third rack, wherein when the motor is driven, the first door slides by the first drive unit, and as the first door slides, the second rack meshes with the second rack. This is a platform fence in which a pinion obtains rotational force and the second door slides by the third drive unit.

Further, a second invention includes a third door, a third pinion pivotally supported on the second door, and a fourth rack provided on the first door, the third pinion having teeth. a fourth rack that together constitute a fourth drive unit; and a fifth rack provided on the third door, on the opposite side of the meshing position of the fourth rack with the third pinion. further comprising a fifth rack that constitutes a fifth drive section by meshing with the third pinion, and as the first door and the second door slide, the fourth drive section drives the fourth rack. In the platform fence according to the first aspect of the present invention, the third pinion meshing with the rack receives rotational force, and the third door slides by the fifth drive unit.

Further, a third invention is a multi-stage sliding door type double-door platform fence according to the first or second invention, in which the door discharge direction is set to both the left side and the right side of the door pocket part, and the door pocket part is common. The platform fence is equipped with an emergency door in the middle between the left and right sides of the door pocket section, which allows passage from the track side to the platform side when both doors are fully closed.

The platform fence of the first invention uses a rack and pinion mechanism as the mechanism of the drive unit. Since the rack and pinion mechanism transmits power by meshing gears, the transmission efficiency is stable and high, and it is more durable than drive mechanisms that use timing belts, wires, or chains. Therefore, it is possible to realize a multi-stage sliding door type platform fence with a longer inspection cycle than before.

According to the second invention, a three-stage sliding door type platform fence having the same effect as the platform fence of the first invention can be realized.

According to the third invention, it is possible to realize a platform fence with an emergency door while making effective use of the internal space of the door pocket and reducing the width of the door pocket (length in the longitudinal direction of the platform) as much as possible.

FIG. 2 is a diagram illustrating an example of the configuration of a platform fence in the first embodiment, and is a front view seen from the platform side. FIG. 2 is a side view showing an example of the configuration and installation example of the platform fence in the first embodiment, as seen from the advancing side in the advancing and retreating direction. FIG. 3 is a diagram illustrating an example of the configuration of a door pocket, including (1) a sectional view taken along line III-III as seen from the front, and (2) a side view as seen from the advancing side in the advancing and retreating direction. FIG. 2 is a diagram illustrating a configuration example of the first door, including (1) an IV-IV cross-sectional view seen from the front direction, and (2) a side view seen from the advancing side in the advance/retreat direction. It is a figure which shows the example of a structure of a 2nd door and a 3rd door, Comprising: (1) A perspective view seen from the front direction, (2) A side view seen from the advance side of the advance/retreat direction. FIG. 3 is a perspective front view of the platform fence of the first embodiment when the movable door is in a fully extended state (the entrance is fully closed), as seen from the platform side. FIG. 2 is a perspective front view of the platform fence of the first embodiment, seen from the platform side, in a state halfway from a fully advanced state (a fully closed state of the entrance/exit) to a fully retracted state (a fully open state of the entrance/exit); FIG. 2 is a perspective front view of the platform fence of the first embodiment when the movable door is in a fully retracted state (fully accommodated state: fully open state of the entrance/exit), as seen from the platform side. FIG. 7 is a diagram illustrating a configuration example of a platform fence according to a second embodiment, and is a front perspective view seen from the platform side. FIG. 2 is a diagram showing an example of the configuration of a double-door platform fence, and is a front perspective view seen from the platform side, selectively showing main components.

Examples of embodiments of the present invention will be described below, but it goes without saying that the forms to which the present invention can be applied are not limited to the following embodiments. In order to make the structure easier to understand, only the movable door and its drive mechanism are extracted and illustrated, and the components of the electrical system including the movable door support structure and control system are omitted. .

[First embodiment]
FIG. 1 is a diagram showing an example of the configuration of a platform fence in the first embodiment, and is a front view seen from the platform side. FIG. 2 is a side view of the platform fence 2 viewed from the advancing side in the advance/retreat direction (the advancing side for the movable door; the side from which the movable door is discharged when viewed from the door pocket).

The platform fence 2 includes a door pocket 10 and three movable doors (first door 30, second door 50, and third door 70 in order of proximity from the door pocket 10 when fully opened), and the door discharge from the door pocket 10. This is a three-stage sliding door type platform fence in which each movable door interlocks and slides in different directions.

There are two types of platform fences 2: a right-side installed platform fence 2R and a left-side installed platform fence 2L. The right-side installed platform fence 2R is configured to allow the movable door to advance to the left of the door pocket section 10 when viewed from the platform side. The left-side installed platform fence 2L is configured to advance (discharge) the movable door toward the right side of the door pocket section 10 when viewed from the platform side. In the example shown in Fig. 1, a right-side platform fence 2R is installed on the top surface of the platform 3 on the right side of the entrance/exit when viewed from the platform side, for one entrance/exit, and on the left side of the entrance/exit when viewed from the platform side. The left side installation type platform fence 2L is shown installed on the upper surface of the platform 3 from the platform side.

The configuration of the right-side installed platform fence 2R and the left-side installed platform fence 2L basically have the same configuration, although the moving direction of the movable door is reversed. Therefore, in the description of the first embodiment, the left side installation type platform fence 2L will be simply referred to as the "platform fence 2" and will be described in detail to represent both.

FIG. 3 is a diagram showing an example of the configuration of the door pocket section 10, in which FIG. 3 (1) is a sectional view taken along line III--III seen from the front direction, and FIG. 3 (2) is a side view seen from the advancing side in the advance/retreat direction. , is.
The outer shell part 11 of the door pocket part 10 is a box that opens in the advancing direction of the movable door. A motor 12 is fixed with a motor fixing fitting 13 at the bottom of the internal space defined by the outer shell 11 and at the end of the movable door in the advancing direction (door discharge side). The motor 12 can include a speed reduction mechanism as appropriate.

The drive shaft of the motor 12 is installed in a direction from the platform toward the track, and a first pinion 14 made of, for example, a spur gear is fixed to the tip of the drive shaft. The first pinion 14 is driven with its rotating surface up and down as the motor 12 is driven.

Further, the door pocket portion 10 includes a rack fixing fitting 15 on the rearward side of the movable door with respect to the motor fixing fitting 13, and a second rack 16 provided on the upper end surface of the fitting. The second rack 16 is long along the moving direction of the movable door, and is arranged with rack teeth facing upward.

FIG. 4 is a diagram showing an example of the configuration of the first door 30, in which FIG. 4 (1) is a cross-sectional view taken along IV-IV seen from the front direction, and FIG. 4 (2) is a side view seen from the advancing side in the advance/retreat direction. Figure.

The main body of the first door 30 includes a track-side door board 31, a platform-side door board 32, and an upper end surface 33 that connects the upper ends of the track-side door board 31 and the platform-side door board 32. That is, the main body of the first door 30 defines an internal space that opens in three directions: an advancing side, a retreating side, and a lower side. When viewed from the advancing side, the main body can be said to have a U-shape with the opening facing downward. The thickness of the first door 30 in the direction from the platform to the track is set smaller than the inner dimension of the internal space of the door pocket 10 in the direction from the platform to the track.

The track side door board 31 has a first drive section 91 (first rack and pinion mechanism section; see FIG. 2) that meshes with the first pinion 14 (see FIG. 3) in the platform longitudinal direction at its lower end. A first rack 34 is provided. The first rack 34 is long in the advance/retreat direction and is installed with the rack teeth facing downward.

Further, the track-side door board 31 supports a fourth rack 36 on the inner surface side above the first rack 34 with a rack support fitting 35. The fourth rack 36 is long in the advance/retreat direction and is supported with the rack teeth facing upward.

The platform side door board 32 has a second pinion 37, which is pivoted on the inner surface on the retreating side, at a position slightly above the lower end, with a rotation axis oriented in a direction from the platform toward the track. The second pinion 37 is a spur gear that meshes with the second rack 16 (see FIG. 3) of the door pocket section 10 to constitute the second drive section 92 (second rack and pinion mechanism section; see FIG. 2). drive with the rotating surface facing up or down.

FIG. 5 is a diagram showing a configuration example of the second door 50 and the third door 70, in which FIG. 5(1) is a perspective view seen from the front direction, and FIG. 5(2) is a perspective view from the advancing side in the advance/retreat direction. This is a side view.
The main body of the second door 50 includes a track-side door board 51, a platform-side door board 52, and an upper end surface 53 that connects the upper ends of the track-side door board 51 and the platform-side door board 52. Incidentally, in the perspective view of FIG. 5(1), the track-side door board 51 and the platform-side door board 52 are seen to overlap with each other.

That is, like the first door 30, the main body of the second door 50 defines an internal space that opens in three directions: the advancing side, the retreating side, and the lower side. When viewed from the advancing side, the main body can be said to have a U-shape with the opening facing downward. The thickness of the second door 50 in the platform-track direction is set smaller than the inner dimension of the internal space of the first door 30 in the platform-track direction.

The second door 50 has a third rack 54 at the lower end of the home-side door board 52. The third rack 54 is long in the advance/retreat direction, and is installed with the rack teeth facing downward, and meshes with the second pinion 37 (see FIG. 4) of the first door 30 to move the third rack 93 (third rack - and pinion mechanism (see Figure 2). The third rack 54 meshes with the second pinion 37 on the opposite side from the position where the second rack 16 meshes with the second pinion 37 . Since the second rack 16 and the third rack 54 mesh with the second pinion 37, the second rack 16, the third rack 54, and the second pinion 37 can be said to have a double rack-pinion configuration.

Further, the second door 50 has a third pinion 55 on the inner surface of the track-side door board 51 at a substantially central lower part in the advance/retreat direction. The third pinion 55 is a spur gear that is pivotally supported by a rotating shaft directed from the track toward the home, and whose rotating surface rotates up and down, and is engaged with the fourth rack 36 (see FIG. 4) of the first door 30. A fourth drive section 94 (fourth rack and pinion mechanism section; see FIG. 2) is configured.

The third door 70 includes a main door board 71 and a fifth rack 72 provided on the lower end surface of the main door board 71.

The thickness of the main door board 71 from the platform to the track direction is determined from the inner dimension of the internal space of the second door 50 from the platform to the track direction (distance from the inner surface of the track side door board 51 to the inner surface of the platform side door board 52). The length of the second door 50 in the forward and backward directions is set to be the same as or smaller than the length of the second door 50 in the forward and backward directions.

The fifth rack 72 is long in the advancing/retreating direction, and is installed with the rack teeth facing downward. (see Figure 2). The fifth rack 72 meshes with the third pinion 55 on the opposite side from the position where the fourth rack 36 meshes with the third pinion 55 . Since the fourth rack 36 and the fifth rack 72 mesh with the third pinion 55, the fourth rack 36, the fifth rack 72, and the third pinion 55 can be said to have a double rack-pinion configuration.

Focusing on all the rack and pinion mechanisms, the first drive section 91, second drive section 92, third drive section 93, fourth drive section 94, and fifth drive section 95 are The amount of rack movement per revolution is set to be the same. Specifically, the first pinion 14, the second pinion 37, and the third pinion 55 have the same pitch diameter and the same number of teeth.

Next, the operation of the platform fence 2 will be explained.
FIG. 6 is a perspective front view of the platform fence 2 (left-side installed platform fence 2L) seen from the platform side when the movable door is fully extended (the entrance is fully closed).
Figure 7 is a perspective view of the platform fence 2 (left-side installed platform fence 2L) as seen from the platform side in the middle of the transition from the fully advanced state (the fully closed state of the boarding/exit) to the fully retracted state (the fully open state of the boarding/exit). It is a front view.
FIG. 8 is a perspective front view of the platform fence 2 (left-side installed platform fence 2L) when the movable door is in the fully retracted state (fully accommodated state: fully open state of the entrance/exit) as seen from the platform side.

As shown in FIG. 6, in order to transition the platform fence 2 from the fully extended state to the fully retracted state, the motor 12 is first driven counterclockwise when viewed from the platform side (front side). Due to this drive, the first pinion 14 also rotates counterclockwise, and the first rack 34 that engages with the first pinion 14 moves in the backward direction (to the left in FIG. 6) with respect to the door pocket 10. Since the first rack 34 is integrated with the first door 30, the first door 30 moves in the backward direction so as to be accommodated in the door pocket 10.

Focusing on the second drive unit 92, as the first door 30 moves in the backward direction, the second pinion 37, which is integrated with the first door 30, engages with the second rack 16 fixed to the door pocket 10. Rotate counterclockwise.

Focusing on the third drive unit 93, the counterclockwise rotation of the second pinion 37 causes the third rack 54 that engages with the second pinion 37 to move in the backward direction. Since the third rack 54 is integrated with the second door 50, the second door 50 moves in the backward direction relative to the first door 30.

Focusing on the fourth drive unit 94, when the second door 50 moves in the backward direction relative to the first door 30, the third pinion 55 of the second door 50 moves to the fourth drive unit 94 of the first door 30. The third pinion 55 is moved in the backward direction relative to the rack 36, and this movement causes the third pinion 55 to rotate counterclockwise.

Focusing on the fifth drive unit 95, the counterclockwise rotation of the third pinion 55 causes the fifth rack 72 to move in the backward direction. The third door 70, which is integrated with the fifth rack 72, moves in the backward direction relative to the second door 50.

As shown in FIG. 7, the five rack-and-pinion mechanisms of the platform fence 2 are operated in a chain manner by the drive of the motor 12, and all movable doors are moved in the direction in which they are housed in the door pocket 10 ( move in the backward direction). As described above, the five rack and pinion mechanisms have the same rack movement amount per rotation of the pinion, so if the movement speed of the first door 30 is used as a reference, the movement speed of the second door 50 is the same. The movement speed will be doubled, and the movement speed of the third door will be tripled. In other words, the speed at which the first door 30 is accommodated in the door pocket section 10, the speed at which the second door 50 is accommodated in the first door 30, and the speed at which the third door 70 is accommodated in the second door 50. The speed at which they are taken inside will be the same.

Then, the platform fence 2 finally reaches a fully retracted state in which all the movable doors are accommodated in the door pocket 10 at the same time, as shown in FIG.

In order to transition the platform fence 2 from the fully retracted state to the fully advanced state, the motor 12 may be rotated in the opposite direction (clockwise when viewed from the platform side). The state of the home fence 2 changes in the order of FIG. 8→FIG. 7→FIG. 6 and returns to the fully advanced state.

As described above, according to the platform fence 2 of this embodiment, when the motor 12 is driven, the first door 30 slides by the first drive section 91, and as the first door 30 slides, it engages the second rack 16. The second pinion 37 obtains rotational force, and the second door 50 is slid by the third drive section 93. Further, as the first door 30 and the second door 50 slide, the third pinion 55 that meshes with the fourth rack 36 receives a rotational force from the fourth drive section 94, and the fifth drive section 95 causes the third pinion 55 to mesh with the fourth rack 36. The door 70 slides. The platform fence 2 uses a rack-and-pinion mechanism that transmits power by meshing gears as a drive mechanism, so the transmission efficiency is stable and high compared to drive mechanisms that use timing belts, wires, or chains. , even more durable. Therefore, it is possible to realize a multi-stage sliding door type platform fence that allows longer inspection cycles than before.

Further, according to the present embodiment, the width of the first door 30 protruding from the door pocket 10, the width of the second door 50 protruding from the first door 30, and the width of the third door 70 protruding from the second door 50. The width will be the same. Therefore, it is possible to realize a movable platform fence that is aesthetically pleasing both during operation and when stopped.

Further, according to the present embodiment, the first door 30 is placed inside the door pocket portion 10, the second door 50 is placed inside the first door 30, and the third door 70 is placed inside the second door 50. The movable door and the movable door can be nested together. Therefore, it is possible to realize a movable platform fence that has an excellent appearance during operation and stoppage, and is also safe in that the mechanical parts are not exposed.

[Second embodiment]
Next, a second embodiment to which the present invention is applied will be described. Note that components similar to those in the first embodiment are given the same reference numerals as in the first embodiment, and redundant explanations are omitted.

FIG. 9 is a diagram showing an example of the configuration of the platform fence 5 of this embodiment, and is a front perspective view seen from the platform side. The platform fence 5 has the same basic configuration as the platform fence of the first embodiment, but includes a right-side installation type platform fence (not shown) in which the advancing direction of the movable door is set opposite to left and right, and a left-side installation type platform fence. It has 5L. FIG. 9 is a front perspective view of the latter.

The platform fence 5 (5L) has the same configuration as the left-side installed platform fence 2 (2L) of the first embodiment, but has two movable doors with the configuration related to the third door 70 omitted. It is a sliding door type platform fence.

According to the present embodiment, it is possible to realize a two-stage sliding door type platform fence that has the same effects as the first embodiment.

[Third embodiment]
Next, a third embodiment to which the present invention is applied will be described. Note that components similar to those in the first embodiment are given the same reference numerals as those in the first embodiment, and redundant explanations are omitted.

FIG. 10 is a front perspective view seen from the platform side showing a configuration example and an installation example of the double-door platform fence 7, and shows the movable door in the fully extended state (the boarding door is in the fully closed state).

The double-door platform fence 7 shares the door pocket portion 10B with the right side installation type platform fence 2R and left side installation type platform fence 2L of the first embodiment on one side and the other side of the door pocket portion 10B in the platform longitudinal direction. These are platform fences set up for each platform. The double-door platform fence 7 can also be referred to as a double-door platform fence of a multi-stage sliding door type in which the door discharge direction is both to the left and right of the door pocket section 10B, and the door pocket section 10B is common. The double door platform fence 7 is installed between two adjacent entrances.

Specifically, the door pocket portion 10B of the double-door platform fence 7 is open in two directions, one side and the other side in the longitudinal direction of the platform. The double-door platform fence 7 has a right-side installed platform fence 2R on one side (the left side in FIG. 10) of the door pocket portion 10B in the platform longitudinal direction, and opens and closes the entrance on the one direction side. Further, the double-door platform fence 7 has a left-side installation type platform fence 2L on the other side of the door pocket 10B in the longitudinal direction of the platform (on the right side in FIG. 10), and opens and closes the entrance/exit on the other side. The double-door platform fence 7 is placed between the right and left platform fences 2R and the left platform fence 2L of the door pocket 10B from the track side when the doors on both sides are fully closed. It is equipped with an emergency door 19 that can be accessed on the side.

According to this embodiment, it is possible to realize a double-door platform fence that has the same effects as the first embodiment and is equipped with an emergency exit.
That is, in both the right side installation type platform fence 2R and the left side installation type platform fence 2L, the arrangement position of the motor 12 in the door pocket portion 10 is at the end on the advancing direction side. Therefore, in the double-opening platform fence 7, they are arranged at both ends of the door pocket portion 10B. In this configuration, the two motors 12 are installed near the opening of the door pocket 10B, so when the movable door is fully extended (the entrance is fully closed), the space (internal space) on the back side of the opening of the door pocket 10B is ) can be used effectively. In other words, a space for installing the emergency door 19 can be secured.

In addition, the double-door platform fence 7 may have a configuration in which the right side installation type platform fence 2R and the left side installation type platform fence 2L of the second embodiment are used, with the door pocket portion 10B being common.

The embodiments to which the present invention can be applied are not limited to the above embodiments, and components may be added, omitted, or changed as appropriate.

2...Platform fence 2L...Left-side installed platform fence 2R...Right-side installed platform fence 7...Double-door platform fence 10...Door pocket 12...Motor 14...First pinion 16...Second rack 19...Emergency door 30...First Door 34...First rack 35...Rack support fitting 36...Fourth rack 37...Second pinion 50...Second door 54...Third rack 55...Third pinion 70...Third door 72...Fifth rack 91...First Drive section 92...Second drive section 93...Third drive section 94...Fourth drive section 95...Fifth drive section

Claims (3)

In a multi-stage sliding door type platform fence in which a first door and a second door are slid in conjunction with each other in the door discharge direction from the door pocket,
a first pinion driven by a motor, which is disposed on the door discharge side in the lower part of the door pocket , and whose rotating surface rotates up and down ;
a first rack provided on the first door, the first rack forming a first drive unit by meshing with the first pinion from above ;
a second pinion that is pivotally supported by the first door at a higher position than the first rack , and whose rotating surface rotates up and down ;
a second rack provided in the door pocket at a position higher than the first pinion so as not to protrude from the door pocket in the door discharge direction ; and a second rack that meshes with the second pinion from below to drive the second drive. a second rack constituting the section;
a third rack provided on the second door , which constitutes a third drive unit by meshing with the second pinion from above ;
Equipped with
When the motor is driven, the first door slides by the first drive unit, and as the first door slides, the second pinion meshing with the second rack receives rotational force, and the second pinion meshes with the second rack. The second door slides by a third drive unit,
The second pinion is pivotally supported at a position away from the advancing side end of the first door in the backward direction, and when the first door slides from the fully open state to the fully closed state, the second pinion Start moving in the direction closer to the 1st pinion.
Home fence. Equipped with a third door,
a third pinion that is pivotally supported by the second door at a higher position than the second rack , and whose rotating surface rotates up and down ;
a fourth rack provided on the first door, which constitutes a fourth drive unit by meshing with the third pinion from below ;
a fifth rack provided on the third door , which constitutes a fifth drive unit by meshing with the third pinion from above ;
further comprising;
As the first door and the second door slide, the third pinion meshing with the fourth rack receives rotational force from the fourth drive section, and the fifth drive section causes the third door to move. slides and
The third pinion is pivotally supported at a position away from the retreating end of the second door in the advancing direction, and when the second door slides from the fully open state to the fully closed state, the third pinion Start moving in the direction closer to the 1st pinion.
The platform fence according to claim 1. 3. A multi-stage sliding door type double-door platform fence according to claim 1 or 2, in which the door discharge direction is both to the left and to the right of the door pocket, and the door pocket is common.
The platform fence is provided with an emergency door in the left and right intermediate parts of the door pocket section, which allows passage from the track side to the platform side when both doors are fully closed.

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