JP6786044B2 - Movable bar unit for home fence configuration - Google Patents

Description

The present invention relates to a technique that is effective when applied to a platform fence installed on a platform of a railway station. In particular, the platform fence can be constructed by being installed on a support stand or a fixed fence provided with a bar that can move in the horizontal direction. Regarding a movable bar unit.

In recent years, the platform of railway station (hereinafter simply referred to as the platform) has a platform door equipped with a door panel that can be opened and closed and a door pocket that also serves as a safety fence to store the door panel in order to ensure the safety of passengers. The device is to be installed. In addition, depending on the platform, a gap may be created between the platform and the train when the train stops, and it is meaningful to install a platform fence in order to prevent the user from falling into the gap. On the other hand, some platforms have simple rope fences, but if there are multiple types of trains that stop, the door positions may differ, in which case the ropes need to be replaced. It took manpower.

In addition, although many conventional platform door devices are effective in ensuring the safety of passengers getting on and off, there is a problem that the manufacturing cost is high and the installation cost is high because the device is heavy and it is often necessary to strengthen the platform. is there. Further, since the door position of the conventional platform door device is generally fixed, problems such as difficulty in dealing with a plurality of door arrangements of vehicles of different vehicle types hinder the spread.
In response to these problems, inventions have been proposed regarding a movable bar type platform door opening / closing device for weight reduction and a platform door device in which the opening position can be changed by making the door pocket itself movable. (See Patent Documents 1 and 2).

Japanese Patent No. 5828054 JP-A-2016-120745

However, since the movable bar type platform boarding / aisle opening / closing device described in Patent Document 1 does not consider the change of the opening / closing position when the door position of the train is different, the platform in which trains of a plurality of models stop. There is a problem that it is difficult to deal with. Further, in the case of a movable bar type home fence, foreign matter may be drawn in when the bar is retracted, but Patent Document 1 does not disclose such a pull-in prevention measure.
Further, the platform door device described in Patent Document 2 in which the door pocket is also movable has not solved problems such as manufacturing cost and weight.

In addition, the conventional platform door device cannot operate all the doors on the platform when a failure occurs in any of the doors, and functions as a safety fence until the repair of the failed door is completed. There is a problem that it cannot be fulfilled.
Furthermore, the main cause of door failure is thought to be the attraction of foreign matter when the door or bar is retracted, but conventional measures to prevent attraction are those that use photoelectric sensors or torque abnormalities in the drive motor of the door or bar. Was detected and the opening / closing operation was stopped, and the countermeasures were not sufficient. In addition, as a physical pull-in prevention measure, it is conceivable to install something like a flap seal or weather strip mall at the door or bar entrance, but there is a risk of contact with passengers' clothes and baggage, and durability There is a problem that maintenance such as regular replacement is required due to the difficulty.

The present invention has focused on the above-mentioned problems, and an object of the present invention is that it is easy to deal with a plurality of door arrangements of vehicles of different vehicle types while ensuring the safety of train users. The purpose is to provide a movable bar unit for a certain home fence configuration.
Another object of the present invention is to provide a movable bar unit that can be easily dealt with in the event of a failure and that the entire home fence does not stop or lose its function for a long time when a failure occurs.
Yet another object of the present invention is to provide a movable bar unit that is less likely to attract foreign matter when the bar is retracted.

In order to achieve the above object, the movable bar unit for the movable home fence configuration according to the present invention is
A rectangular parallelepiped housing long in one direction, a movable bar housed inside the housing so as to be reciprocally movable along the longitudinal direction, and a driving means for moving the movable bar in the axial direction. With
The side wall of the housing is formed with an opening through which the movable bar can protrude or retract, and also
On the upper wall and the bottom wall of the housing, protrusions and engagement holes that can engage with the protrusions are formed so as to be located at locations corresponding to each other.
The home fence can be constructed by installing it on a support stand or a fixed fence.

According to the above means, by appropriately combining a plurality of movable bar units, a movable platform fence that can easily correspond to a plurality of door arrangements of vehicles of different vehicle types while ensuring the safety of train users is placed on the platform. Can be configured. Further, since the protrusions and the engaging holes that can be engaged with the protrusions are formed on the upper wall and the bottom wall of the housing of each movable bar unit so as to be located at the portions corresponding to each other, a plurality of movable parts are movable. Any number of bar units can be easily stacked to form a movable platform fence having a desired height on the platform. Further, since the movable bar is unitized, it is easy to deal with a failure, and it is possible to prevent the whole from stopping or being unable to function for a long time when a failure occurs.

Here, preferably, when the movable bar moves in the retracting direction, it is detected that a foreign substance has entered the inside of the opening to the portion of the housing corresponding to the opening, and the movable bar of the movable bar Provide a pull-in prevention mechanism to stop the movement.
According to such a configuration, it is possible to prevent foreign matter from being drawn into the gap between the movable bar and the opening (the entrance / exit of the bar) when the movable bar is retracted.

Further, preferably, the pull-in prevention mechanism has a recess corresponding to half the shape of the opening, and the recesses are arranged so as to face each other so that the opening having a shape corresponding to the opening can be formed. The cover member and a movement detecting means capable of detecting the movement of the cover member are provided.
The pair of cover members are configured to be rotatable by hinge mechanisms provided on the side facing each other and the side opposite to each other.
According to this configuration, the rotation of the ring-shaped cover member divided into two detects the attraction of foreign matter into the gap between the movable bar and the opening (the entrance / exit of the bar), so that the foreign matter is surely drawn in. It can be detected.

Further, preferably, the pair of cover members are arranged so that the rotation axis of the hinge mechanism faces in the vertical direction.
According to this configuration, when a foreign substance is drawn into the gap between the movable bar and the opening (the entrance / exit of the bar), the cover member rotates about the vertical axis, so that the pair of cover members rotate. It is possible to improve the balance of the above, prevent the pull-in detection operation from fluctuating, and reduce the occurrence of failures.

Further, preferably, step portions that overlap each other are formed at the upper end portion and the lower end portion on the opposite sides of the pair of cover members, and are formed at the step portion and the lower end portion formed at the upper end portion. The direction of the surface overlapping the stepped portion is opposite to that of the stepped portion.
According to this configuration, when an external force acts on one of the cover members of the pair of cover members to rotate the cover member, the other cover member also rotates in conjunction with the cover member, so that foreign matter is more reliably generated. Can be detected.

According to the present invention, it is possible to realize a movable bar unit for a home fence configuration that can easily correspond to a plurality of door arrangements of vehicles of different vehicle types while ensuring the safety of train users. In addition, it is possible to realize a movable bar unit that is easy to deal with in the event of a failure and does not stop as a whole or lose its function for a long time when a failure occurs. Further, there is an effect that it is possible to realize a movable bar unit that is less likely to draw foreign matter when the bar is retracted.

It is an exploded perspective view which shows one Embodiment of the movable home fence which concerns on this invention. It is a front view which shows the assembled state of the movable home fence of embodiment. (A) is a diagram showing a first usage example of the movable home fence of the embodiment, and (B) is a diagram showing a second usage example of the movable home fence of the embodiment. It is an enlarged perspective view which shows the detail of the movable bar unit which constitutes the movable home fence of embodiment. It is a perspective view which looked at the side wall part of the movable bar unit of an Example from the protruding side of a movable bar. It is a perspective view which shows the internal structure (pull-in prevention mechanism) of the movable bar unit of an Example. It is sectional drawing which shows the operation state of the cover of the bar entrance which constitutes the pull-in prevention mechanism provided in the movable bar unit of an Example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing an embodiment of a movable platform fence according to the present invention, and FIG. 2 is a perspective view showing an assembled state thereof.
As shown in FIG. 1, the movable platform fence 10 of the present embodiment includes a grid-shaped fixed fence 12 fixed on the platform by support bases 11A to 11C, a pipe-shaped movable bar 31 movable in the axial direction, and Drive control of the movable bar units 13A and 13B having the drive mechanism 32 and attached to the upper part of the fixed fence 12, the top plate cover 14 mounted on the upper surface of the movable bar unit 13B, and the movable bar units 13A and 13B. A control panel 15 for inputting commands to the control panel 15 and operation panels 16A and 16B for inputting commands to the control panel 15 are provided.

The movable bar 31 is made of a lightweight material such as carbon fiber or glass fiber, and moves in a direction protruding from the movable bar units 13A and 13B to reduce deflection in a cantilevered state (protruding state). It is configured as follows. The movable bar 31 has an overall length of about 1 to 2 m, but can be set to a desired length by connecting a plurality of short pipes of several tens of centimeters, and movable bars of different lengths are prepared. Or, it is designed so that it can be easily dealt with when the length is changed.

The operation panel 16A commands the operation of the movable bar unit 13A, the operation panel 16B commands the operation of the movable bar unit 13B, and the control panel 15 and the operation panels 16A and 16B are attached to the side surfaces of the fixed fence 12. It is configured to be possible. Further, although not shown, a plurality of movable platform fences 10 shown in FIG. 1 are installed on one platform, station control panels for operating them at the same time are also installed, and cables (not shown) are used to connect the control panels 15 to each control panel 15. Be connected. Further, the control panel 15 and the movable bar units 13A and 13B are connected by a cable 17 extending from the control panel 15 and having a connector at the tip.

The movable bar units 13A and 13B have the same configuration, and in the ones shown in FIGS. 1 and 2, the movable bar unit 13B which is turned upside down is placed on the movable bar unit 13A, respectively. The movable bar 31 is configured to project in the opposite direction from the unit. Since the movable bar 31 and its drive mechanism 32 are configured as a unit, for example, by stacking two units in the same direction up and down, a home fence in which the two movable bars 31 project in the same direction and four units can be formed. By alternately stacking two of them in opposite directions, it is possible to form a home fence in which two movable bars 31 can project in the left-right direction with the fixed fence 12 in between. Further, the height of the movable bar 31 can be changed by changing the height of the fixed fence 12.

It is advantageous in terms of manufacturing cost that the lengths of the movable bars 31 built in the movable bar units 13A and 13B (hereinafter, simply referred to as the movable bar unit 13 when these are not distinguished) are the same, but it is applicable. Depending on the platform, it may not be possible to form a boarding / alighting passage at a desired position using only movable bar units of the same length. In such a case, a plurality of movable bar units having different lengths may be prepared, and those having different lengths may be appropriately combined to form the movable home fence 10.
Further, in a state where a plurality of movable bar units 13 are stacked, a front panel 18 having a size for covering the plurality of movable bar units is attached to the front surface of the movable bar units (13A, 13B) as shown in FIG. The units may be integrated so that they do not shift from each other.

FIG. 3 shows an arrangement example of the movable bar unit 13 when the movable home fences 10 shown in FIG. 1 are arranged side by side. As shown in FIG. 3A, the movable platform fences 10 facing each other across the boarding / aisle are provided with movable bar units placed so that the movable bars 31 are at the same height, and the adjacent boarding / aisles are adjacent to each other. Then, the movable bars of the movable platform fence 10 are arranged so as to have different heights. As a result, it is possible to prevent the heights of the movable bars protruding from the left and right movable platform fences 10 from shifting in the same boarding / alighting passage, and the heights of all the movable bars are arranged to be the same. The width of the fixed fence 12 can be reduced as compared with the case where the fixed fence 12 is used.
Depending on the platform, as shown in FIG. 3B, the movable bar units 13 may be arranged back to back so that the heights of all the movable bars are the same.

According to the movable platform fence 10 having the above-described configuration, even when a train of a plurality of vehicle types having different door positions such as a 3-door vehicle or a 4-door vehicle stops, the opening / closing according to the door position of the stopped train. Becomes possible. In addition, since the total weight can be reduced as compared with the platform door device having an opening / closing door and a door pocket, which is currently the mainstream, there is a case where a large-scale construction for increasing the strength of the home, which has been conventionally performed, is not required.
Further, in the movable platform fence 10 of the present embodiment, not only the movable bar unit 13 but also the fixed fence 12 can be removed, so that the work vehicle laid on the platform is compared to the platform for maintenance of station equipment. You can easily unload large equipment and facilities, and load equipment and removed equipment from the platform to the work vehicle.

Next, a specific configuration example of the movable bar unit 13 will be described.
As shown in FIG. 4, the movable bar unit 13 is fixed to a horizontally long rectangular parallelepiped main body frame 33 having one surface (front surface in the drawing) open and the center of the rear wall of the main body frame 33 along the longitudinal direction. A guide rail 34, a drive unit 35 having a built-in motor and fixed to the bottom wall of the main body frame 33, a drive pulley 36B mounted on the rotating shaft of the motor of the drive unit 35, and a movable bar protrusion of the main body frame 33. A driven pulley 36A rotatably supported by a block 37 fixed to a side end, a cogged belt 38 wound between the driving pulley 36B and the driven pulley 36A, and a part of the cogged belt 38 are sandwiched. A movable block 39 provided so as to be movable along the guide rail 34 is provided.

The bottom surface and the upper surface of the main body frame 33 are provided with protrusions and engagement holes formed at positions corresponding to the protrusions, and when a plurality of movable bar units 13 are stacked, the protrusions on the upper surface of the lower unit or It is configured so that alignment can be performed by engaging the engaging hole with the engaging hole or protrusion of the upper unit. A hook-shaped hook is provided instead of the protrusion, and the engaging hole is formed at a slightly offset position. The two units are overlapped so that the hook engages with the engaging hole of another unit, and then the entire frame. It may be configured so that the hook can be engaged with the edge of the engaging hole by sliding the hook to maintain the bonded state.

One end of the movable bar 31 is fixed to the movable block 39, and when the drive pulley 36B is rotated by driving the motor of the drive unit 35, the cogged belt 38 is transferred, whereby the movable block 39 is moved. It is configured to move along the guide rail 34 so that the movable bar 31 is moved in a protruding direction or a retracting direction.
Further, a pull-in prevention mechanism 40 is provided at the end of the main body frame 33 on the protruding side of the movable bar corresponding to the entrance / exit of the movable bar 31, and an alarm sound or the like is provided on the side wall 33A of the other end of the main body frame 33. A speaker 50 for emitting a sound is provided.

Further, a photoelectric sensor 60 for detecting the presence or absence of foreign matter is provided on the side wall of the main body frame 33 on the protruding side of the movable bar. The photoelectric sensor 60 may be a transmissive type or a reflective type, but it is desirable to use the reflective type mainly when it is desired to detect the presence or absence of foreign matter in the vicinity of the entrance / exit of the movable bar 31. In the case of a transmissive sensor, a light emitting element is provided on one of the opposing movable bar units, and a light receiving element is provided on the other. When the photoelectric sensor 60 detects a foreign substance, it can be configured to turn off the energization switch for the motor provided in each movable bar unit 13 to stop the movable bar 31 in an emergency.

Further, although not shown, a function is provided that monitors changes in the current flowing through the motor of the drive unit 35 to detect torque fluctuations, and cuts off the drive of the motor, that is, the supply of current to the motor when an abnormal torque is detected. Has been done. It should be noted that this function can be provided to the control panel 15 described above, but can also be provided to each of the movable bar units 13.
By providing the three types of monitoring functions as described above, the safety of the movable platform fence 10 can be enhanced. In particular, since the pull-in prevention mechanism 40 is a mechanical safety device, it has an advantage of being resistant to noise and having high reliability.

Further, in the present embodiment, since each movable bar unit 13 is provided with three types of monitoring functions, even if a failure occurs in any of the units, the other units are not adversely affected. As a result, there is an advantage that the operation can be continued without stopping the other movable platform fence 10 by having the station staff attend and guide only the boarding / alighting passage where the failed movable bar unit 13 is located. Further, since the movable home fence 10 is composed of the movable bar unit 13, only the movable bar unit 13 in which the failure has occurred can be removed and the spare movable bar unit 13 can be replaced to restart the operation. It is possible to shorten the operation stop time of the home fence.

Next, the details of the pull-in prevention mechanism 40 among the above three types of monitoring functions will be described with reference to FIGS. 5 to 7. Of these, FIG. 5 is a perspective view of the side wall portion of the movable bar unit 13 as viewed from the protruding side of the movable bar 31, FIG. 6 is a perspective view showing the internal structure (pull-in prevention mechanism 40) of the movable bar unit 13, and FIG. It is sectional drawing which shows the operation state of the cover which constitutes the pull-in prevention mechanism 40.
In FIG. 5, reference numeral 33A is attached to a side plate constituting the frame 33 of the movable bar unit 13, and the side plate 33A has a substantially rectangular outer shape and a circular opening 33B is formed in the center. A plate portion 33a and an upright wall 33b formed by bending the outer edge portion of the plate portion 33a inward by 90 degrees are provided, and a pull-in prevention mechanism 40 is provided in a space surrounded by the plate portion 33a and the upright wall 33b. ing.

As shown in FIG. 6, the pull-in prevention mechanism 40 includes a pair of covers 41A and 41B and covers 41A and 41B arranged so as to face each other with the opening 33B in contact with the inner side surface of the plate portion 33a. A pair of torsion springs 42A and 42B that urge the cover 41A and 42B outward, a pair of flexible rod type switches (hereinafter referred to as tactile switches) 43A and 43B that detect the rotation of the covers 41A and 41B, and covers 41A and 41B. The stopper pieces 44A and 44B, which regulate the rotation position of the above, are provided.
The pair of covers 41A and 41B are rotatably supported by hinge mechanisms 45A and 45B provided on the side opposite to the opening 33B, and the rotating shafts 45a and 45a constituting the hinge mechanisms 45A and 45B are supported. The torsion springs 42A and 42B inserted through the 45b are rotationally urged in the outward direction, that is, in the direction in contact with the inner side surface of the plate portion 33a.

Further, the covers 41A and 41B are made of synthetic resin and are provided with semicircular recesses 41a and 41b on opposite sides, and are formed in the center of the side plate 33A by combining the recesses 41a and 41b. An opening corresponding to the circular opening 33B is formed, and the movable bar 31 can be inserted into the opening. Semi-annular ribs R1 and R2 swelling outward are formed at the edges of the recesses 41a and 41b, and the outer diameters of the ribs R1 and R2 are circular openings in the center of the side plate 33A. It is set to be slightly smaller than the diameter of 33B, and when the covers 41A and 41B are urged outward by the torsion springs 42A and 42B, the ribs R1 and R2 are fitted into the opening 33B at the center of the side plate 33A. By doing so, it is configured so that a step does not occur between the outer surface of the side plate 33A of the frame 33 and the outer surface of the covers 41A and 41B.

Further, the covers 41A and 41B are configured such that the front and rear opposite steps S1 and S2 are formed at the abutting portions thereof, and the steps S1 and S2 overlap each other so that the covers 41A and 41B become flat. Has been done. Moreover, the steps S1 and S2 are formed so that the overlaps on the upper side and the lower side are reversed, and when one cover 41A (41B) is rotated by such a reverse overlap structure, A force is transmitted to the other cover 41B (41A) through the step, and both covers 41A and 41B rotate in conjunction with each other.

Further, the covers 41A and 41B are provided so that the rotating shafts 45a and 45b constituting the hinge mechanisms 45A and 45B face in the vertical direction, that is, the covers 41A and 41B are arranged symmetrically. It is also possible to configure the covers 41A and 41B so that the rotation shafts 45a and 45b are in the horizontal direction, that is, the covers 41A and 41B are arranged vertically symmetrically. Due to the weight of the covers 41A and 41B, the forces acting on the torsion springs 42A and 42B are not even, so smooth movement cannot be expected and there is a risk that the durability of the parts will differ. In the embodiment, it is possible to avoid the occurrence of such a defect.

Further, although not particularly limited, projecting portions 46A and 46B projecting upward and downward are provided in the upper and lower portions of the covers 41A and 41B, that is, in the vicinity of the steps S1 and S2, and the projecting portions. Horizontal grooves 46a and 46b are formed inside the 46A and 46B, and the tactile (detectors) 43a and 43b of the tactile switches 43A and 43B for detecting rotation are in contact with the grooves 46a and 46b, respectively. It is configured to be.
As described above, since the covers 41A and 41B are configured to rotate in conjunction with the other when one is rotated, the rotation of the covers 41A and 41B can be detected even if there is only one tactile switch. However, by providing two tactile switches, even if one of them fails, the rotation of the covers 41A and 41B can be detected by the other tactile switch.

According to the pull-in prevention mechanism 40 having the above-described configuration, when the movable bar 31 retracts, foreign matter such as a passenger's finger or a part of baggage enters the movable bar 31 and the central opening 33B of the side plate 33A. Even if it is pulled into the gap, the covers 41A and 41B inside the opening rotate, the tactile switches 43A and 43B detect it, and the rotation of the motor is stopped, so that further pulling can be prevented. .. Further, when the tactile switches 43A and 43B detect the rotation of the covers 41A and 41B, the motor may be temporarily reversed and then stopped, whereby the drawn foreign matter can be discharged.

Further, since the stopper pieces 44A and 44B for restricting the rotation of the covers 41A and 41B are provided, even if a foreign matter is drawn in, the rotation of the covers 41A and 41B is blocked at a predetermined angle as shown in FIG. Is not pulled all the way in. Further, even if the tactile switches 43A and 43B are out of order at this time, the torque of the motor increases, so that the control system can detect it and stop the motor.
Further, since the covers 41A and 41B covering the entrance and exit of the bar are made of synthetic resin, there is no risk of damaging the passenger's fingers even if they are accidentally pulled in.

Although the invention made by the present inventor has been specifically described above based on the embodiment, the present invention is not limited to the above embodiment. For example, in the above embodiment, the rotation of the covers 41A and 41B is detected by the tactile switch, but a microswitch or a photoelectric sensor may be used. Further, in the above-described embodiment, the cover member covering the gap between the movable bar and the opening (the entrance / exit of the bar) is divided into two, but the cover member may be divided into three or four.
Further, in the above embodiment, it has been described that the movable bar unit 13 of the movable platform fence 10 is operated by the station control panel, but it is wirelessly communicated that the train crew has operated the door open button or the door close button on the train side. The movable home fence 10 may be notified by radio waves) to operate the movable bar unit 13.

Further, in the above embodiment, it has been described that the movable home fence is composed of the fixed fence and the plurality of movable bar units. However, the frame (housing) is the same as the movable bar unit (common), and the movable bar and the drive device are inside. By separately preparing a dummy unit that does not have a built-in, and combining the fixed fence, the dummy unit, and the movable bar unit, a movable home fence having an arbitrary number of movable bars at an arbitrary height can be configured. Is also possible.

10 Movable home fence 11A-11C Support stand 12 Fixed fence 13A, 13B Movable bar unit 14 Top plate cover 15 Control panel 16A, 16B Operation panel 31 Movable bar 33 Main body frame 33a, 33b Standing wall 34 Guide rail 35 Drive unit 36A, 36B Pulley 38 Cogged Belt 39 Movable Block 40 Pull-in Prevention Mechanism 41A, 41B Cover 41a, 41b Recess 42A, 42B Torsion Spring 43A, 43B Tactile Switch 43a, 43b Detector 44A, 44B Stopper Piece 45A, 45B Hinge Mechanism 45a, 45b Rotating Shaft 46A, 46B Protruding parts 46a, 46b Grooves

Claims (5)

A rectangular parallelepiped housing long in one direction, a movable bar housed inside the housing so as to be reciprocally movable along the longitudinal direction, and a driving means for moving the movable bar in the axial direction. With
The side wall of the housing is formed with an opening through which the movable bar can protrude or retract, and also
On the upper wall and the bottom wall of the housing, protrusions and engagement holes that can engage with the protrusions are formed so as to be located at locations corresponding to each other.
A movable bar unit characterized in that a home fence can be constructed by installing it on a support base or a fixed fence. When the movable bar moves in the retracting direction to the portion of the housing corresponding to the opening, it is for detecting that a foreign substance has entered the inside of the opening and stopping the movement of the movable bar. The movable bar unit according to claim 1, wherein a pull-in prevention mechanism is provided. The pull-in prevention mechanism includes a pair of cover members having recesses corresponding to half of the shape of the opening and capable of forming an opening having a shape corresponding to the opening by arranging the recesses so as to face each other. A movement detecting means capable of detecting the movement of the cover member is provided.
The movable bar unit according to claim 2, wherein the pair of cover members are rotatably configured by hinge mechanisms provided on the side facing each other and the side opposite to each other. The movable bar unit according to claim 3, wherein the pair of cover members are arranged so that the rotation shaft of the hinge mechanism faces in the vertical direction. The upper end portion and the lower end portion on the opposite sides of the pair of cover members are formed with stepped portions that overlap each other, and the stepped portion formed at the upper end portion and the stepped portion formed at the lower end portion. The movable bar unit according to claim 3 or 4, wherein the overlapping surfaces have opposite orientations.

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