JP6723067B2 - Lock device and home fence - Google Patents

Description

The present invention relates to a locking device and a platform fence including the locking device.

The platform fence is a kind of automatic door device installed on the platform of a railway station so as to face the entrance/exit of a railway vehicle. In general, the platform fence includes a door pocket fixed to the platform and a door body that moves on a rail provided on the door pocket and moves back and forth with respect to the door pocket.

The movable platform fence described in Patent Document 1 is also one of such platform fences. The movable platform fence disclosed in Patent Document 1 is provided with a lock device so that the door body is prevented from being opened carelessly when the door body is in the closed position.

The locking device included in the movable platform fence described in Patent Document 1 includes an engagement portion that rotates about a latch rotation shaft, a solenoid that has a solenoid shaft that rotates the engagement portion, and an engagement portion that engages with the engagement portion. And a possible engaged portion. Then, when the solenoid is energized, the engaging portion and the engaged portion are engaged with each other, and the door body is locked in the door pocket. This locking device is provided on the movable platform fence to prevent the passenger from prying open the door.

Japanese Patent No. 5640437

The engaged portion of the lock device described in Patent Document 1 needs to be accurately positioned and adjusted with reference to the engaging portion so as to surely engage with the engaging portion when the lock device operates. .. The positioning adjustment of the engaged portion is performed at the manufacturing site of the home fence by fixing the home fence to the surface plate. In other words, the positioning adjustment of the engaged portion is performed at the home fence manufacturing site, and the home fence having the engaged portion positioning adjustment performed is carried into the installation site.

However, since the installation site, that is, the platform has a slight inclination or unevenness, when the platform is installed on the platform, the engaging portion and the engaged portion of the locking device may not engage properly. Therefore, the platform fence described in Patent Document 1 needs to be adjusted again for the position of the engaged portion after being installed on the platform.

That is, the locking device described in Patent Document 1 has a problem in that it is necessary to repeat positioning adjustment of the engaged portion of the locking device at the time of manufacturing and on-site installation, and it takes a considerable working time for each. ..

The present invention has been made to solve the above problems, and an object of the present invention is to provide a locking device in which positioning adjustment does not take time and effort. Moreover, it aims at providing the platform fence which can omit the positioning adjustment of a locking device after on-site installation.

In order to achieve the above object, a lock device according to the present invention is a lock device for restraining movement of a door body attached to a door pocket so as to move back and forth, and fixed to either the door pocket or the door body. The base plate and an engaging arm that is pivotally supported by the base plate so as to swing around the latch rotation axis and has an engaging claw at the tip, and is fixed to the base plate to latch and rotate the engaging arm. An actuator that swings around an axis and a plurality of engaged pieces that engage with the engaging claws are provided, and an engaged portion that is fixed to the other of the door pocket or the door body is provided . Multiple engaged piece, are arranged parallel to the moving direction of the door body Rutotomoni engaging claw is engaging claw abuts with the engaged piece when engaged with the engaged piece abutment The engaged piece is formed on the side far from the base plate, and when the engaged piece engages with the engaging claw, the engaged piece comes into contact with the abutting surface of the engaging claw to engage the engaged surface of the base plate. When the engaging claw is in contact with the inclined surface, which is the abutted surface that restricts the movement in the direction away from the joint and the inclined surface that is formed on the side close to the base plate, An engaging surface and a sloped surface that is closer to the base plate than the engaged piece and that is formed between the engaging piece and another engaged piece that is adjacent to the engaged piece are provided.

The lock device according to the present invention can lock the door body when the home fence in the closed state is about to be opened even if the engaged portion is displaced from the engaging portion. Therefore, according to the present invention, the positioning adjustment of the engaged portion, which is performed when the lock device is attached to the platform, becomes easy. Further, it is possible to omit the positioning adjustment of the engaged portion of the lock device after the platform fence is installed on site. Therefore, it is possible to reduce the work time required for the positioning adjustment of the lock device during the manufacture of the platform fence and the on-site installation.

It is a structure figure of a lock device concerning an embodiment of the invention. FIG. 3 is a structural diagram showing a state in which an engaging claw and an engaged piece of the locking device shown in FIG. 1 are engaged with each other. It is explanatory drawing explaining the effect|action of the locking device shown in FIG. 1, Comprising: FIG.3(a) is a figure which shows the state which cannot be mutually engaged because the position of an engaging claw and an engaged piece has shifted. 3(b) is a diagram showing a state in which the positional shift between the engaging claw and the engaged piece is eliminated and the engaging claw and the engaged piece are engaged with each other. It is explanatory drawing which shows the relationship between the width|variety of the engaging claw of the locking device described in FIG. 1, and the space|interval of arrangement of an engaged piece. It is explanatory drawing explaining the structure of the home fence provided with the lock device described in FIG. 1, FIG.5(a) is a block diagram which shows the external shape of the home fence in a closed state, and FIG.5(b) is FIG. 5C is a configuration diagram showing an inside state of the door pocket of the home fence in the closed state, and FIG. 5C is a configuration diagram showing an inside state of the door bag of the home fence in the opened state. It is an outline view showing the state where two home fences described in Drawing 5 were arranged symmetrically.

Hereinafter, a lock device according to an embodiment of the present invention and a platform fence including the lock device will be described in detail with reference to the drawings. In addition, in each drawing, the same reference numeral is given to the same or equivalent portion.

FIG. 1 is a structural diagram of a lock device 1 according to an embodiment of the present invention. In the home fence 2 (not shown in FIG. 1) described later, the lock device 1 prevents the door body 3 from returning to the inside of the door pocket 4 when the door body 3 is pulled out of the door pocket 4. This is a device for restraining the movement of the door body 3. As shown in FIG. 1, the lock device 1 includes a base plate 5 fixed to the door pocket 4 and an engaged portion 6 fixed to the door body 3.

A latch rotation shaft 7 is fixed to the base plate 5, and an engagement arm 8 is rotatably supported on the latch rotation shaft 7. Further, an engaging claw 9 is formed on the right end of the engaging arm 8 in FIG. When the engagement arm 8 rotates in the counterclockwise direction (CCW) around the latch rotation shaft 7, the engagement claw 9 moves in a direction away from the engaged portion 6. That is, the engaging claw 9 is lifted in the direction indicated by the arrow CCW in FIG. Further, when the engagement arm 8 rotates in the clockwise direction (CW) around the latch rotation shaft 7, the engagement claw 9 moves in a direction approaching the engaged portion 6. That is, the engaging claw 9 is pushed down in the direction indicated by the arrow CW in FIG.

A coil spring 10 functioning as a tension spring is stretched between the tab 5a fixed to the base plate 5 and a portion of the engagement arm 8 located on the right side of the latch rotation shaft 7 in FIG. Therefore, the engagement arm 8 is biased by the coil spring 10 so as to rotate in the counterclockwise direction (CCW) around the latch rotation shaft 7. That is, the coil spring 10 urges the engaging arm 8 so that the engaging claw 9 is separated from the engaged portion 6.

A solenoid 11 is fixed to the base plate 5 at a position closer to the left side than the latch rotation shaft 7 in FIG. The solenoid 11 includes a main body 11a fixed to the base plate 5 and a rod 11b attached to the main body 11a so as to be movable back and forth. The rod 11b is configured to be pulled up into the main body 11a when the solenoid 11 is energized. In addition, the rod 11b is located on the left side of the latch rotation shaft 7 in FIG. 1 of the engagement arm 8 via the link 11c (that is, the portion to which the coil spring 10 is connected is the latch rotation shaft 7). It is connected to the site on the opposite side). With this configuration, when the solenoid 11 is energized, the engagement arm 8 rotates in the clockwise direction (CW) around the latch rotation shaft 7. When the engaging arm 8 rotates in the clockwise direction, the engaging claw 9 of the engaging arm 8 approaches the engaged portion 6. That is, the solenoid 11 functions as an actuator that swings the engagement arm 8 around the latch rotation shaft 7. The energization of the solenoid 11 is controlled by a controller (not shown) for the platform 2.

A limit switch 12 is fixed to the end of the base plate 5 on the left side in FIG. The limit switch 12 includes a main body 12a fixed to the base plate 5 and a lever 12b swingably attached to the main body 12a. A micro switch (not shown) is built in the main body 12a, and the micro switch is opened and closed when the lever 12b swings. The lever 12b is arranged so as to contact the left end of the engagement arm 8. Therefore, when the engagement arm 8 rotates in the clockwise direction (CW) and the end of the engagement arm 8 on the left side in FIG. 1 is lifted, the lever 12b swings with respect to the main body 12a. The micro switch built in the body of the limit switch 12 is connected to a control device (not shown) of the home fence 2.

A stopper 13 is fixed to the right end of the base plate 5 in FIG. The stopper 13 is a member that restricts rotation of the engagement arm 8 in the counterclockwise direction (CCW). When the engaging arm 8 rotates counterclockwise (CCW) to the position shown by the imaginary line in FIG. 1, the engaging arm 8 contacts the stopper 13 and stops there.

Among the components of the lock device 1, components other than the engaged portion 6 are directly or indirectly attached to the base plate 5 and are involved in the operation of the engagement arm 8. Hereinafter, in this specification, these may be collectively referred to as an “engagement portion”. That is, the rest of the locking device 1 excluding the engaged portion 6 may be referred to as an “engagement portion”.

As shown in FIG. 1, the engaged portion 6 includes a base 6a, and four engaged pieces 6b are formed on the base 6a. The engaged piece 6b is a convex portion formed on the upper surface of the base 6a in FIG. Further, the four engaged pieces 6b are arranged at equal intervals in a direction in which the door body 3 advances and retracts with respect to the door pocket 4 (directions indicated by arrows FWD and BWD in FIG. 1). Therefore, the engaged portion 6 has a corrugated or sawtooth appearance as a whole.

Now, in the state shown in FIG. 1, when the solenoid 11 is energized, the rod 11b is pulled up into the main body 11a. Then, the engagement arm 8 rotates in the clockwise direction (CW) around the latch rotation shaft 7, and the engagement claw 9 approaches the engaged portion 6. As a result, as shown in FIG. 2, the engaging claw 9 engages with one of the engaged pieces 6b included in the engaged portion 6. When the engaging claw 9 engages with the engaged piece 6b, the door body 3 cannot move in the backward direction (the direction indicated by the arrow BWD) with respect to the door pocket 4. That is, the door body 3 is locked. At this time, the lever 12b of the limit switch 12 contacts the end of the engagement arm 8 and is lifted.

Further, when the energization of the solenoid 11 is stopped in the state shown in FIG. 2, the engagement arm 8 is pulled by the coil spring 10 and rotates in the counterclockwise direction (CCW) around the latch rotation shaft 7. When the engagement arm 8 rotates counterclockwise (CCW), the engagement claw 9 separates from the engaged portion 6. As a result, the engagement between the engaging claw 9 and the engaged piece 6b is released. That is, the state returns to the state shown in FIG.

In the above, the operation of the locking device 1 when the engaged portion 6 of the locking device 1 is correctly positioned with respect to the engaging portion has been described with reference to FIGS. 1 and 2. On the other hand, if the engaged portion 6 is not properly positioned with respect to the engaging portion, the engaging claw 9 is not engaged with the engaged piece 6b as shown in FIG. 3(a). In this state, when an external force is applied to the door body 3 to pull the door body 3 into the door pocket 4, that is, when the door body 3 is tried to be opened, the door body 3 moves in the direction indicated by the arrow BWD. .. When the door body 3 moves in the direction indicated by the arrow BWD, the engaging claw 9 falls into a recess between the engaged piece 6b and another engaged piece 6b on the left side of the engaged piece 6b. .. Then, when the door body 3 further moves in the direction shown by the arrow BWD, the engaging claw 9 is moved to another engaged piece 6b on the left side of the engaged piece 6b, as shown in FIG. 3(b). Engage. As a result, the door body 3 is locked. That is, the movement of the door body 3 in the arrow BWD direction is restricted. In this way, the lock device 1 can lock the door body 3 even if the engaged portion 6 is not correctly positioned with respect to the engaging portion.

Further, the above-described operation is performed such that when the engaging claw 9 is lowered, the engaging claw 9 comes into contact with the engaged portion 6 within the range indicated by W in FIG. 3A. If the junction 6 is arranged, it occurs. That is, when the engaging claw 9 is lowered and the engaging claw 9 contacts the engaged portion 6 within the range indicated by W in FIG. 3A, the door body 3 is moved in the direction indicated by the arrow BWD. Then, the engaging claw 9 engages with one of the engaged pieces 6b. As a result, the door body 3 is locked. Therefore, the displacement of the engaged portion 6 with respect to the engaging portion is allowed up to the range indicated by W in FIG. Therefore, the positioning adjustment of the engaged portion 6 becomes easy. As a result, the work time required for positioning adjustment is reduced. Further, in many cases, when the home fence 2 is installed on site, it is not necessary to perform the positioning adjustment of the engaged portion 6 again. That is, it is possible to omit the positioning adjustment of the lock device 1 when the platform 2 is installed on site.

As described above, the engaged pieces 6b are arranged at equal intervals on the base 6a, but the interval B is substantially equal to the width b( of the engaging claws 9 as shown in FIG. The width is larger than the width (measured in a direction parallel to the arrangement of the engaged pieces 6b when the engaging claws 9 engage with the engaged pieces 6b). Therefore, as shown in FIG. 4, when the engaging claw 9 is lowered to a height at which it engages with the engaged piece 6b, "play" occurs. That is, in the state shown in FIG. 4, the engaged portion 6 (the door body 3 (not shown) to which the engaged portion 6 is fixed) can be moved in the left-right direction in FIG. If there is such "play", for example, when a foreign object is sandwiched between the door tip of the door body 3 and the door tip of another door body 3 that abuts with the door tip, the Foreign matter can be removed by widening the gap between them.

Finally, the platform fence 2 including the lock device 1 will be described. The platform fence 2 is a kind of automatic door device installed on the platform of a railway station, and as shown in FIG. 5A, a door pocket 4 fixed to a floor surface 14 of the platform of the railway station, and a door pocket. The door body 3 is attached to the door 4 so as to be able to move back and forth. Note that FIG. 5A is an outline view of the home fence 2 in a state where the door body 3 is completely pulled out from the door pocket 4, that is, the home fence 2 in a closed state, as seen from inside the platform.

FIG. 5B is a diagram in which a part of the panel forming the door pocket 4 of the home fence 2 in the same state as in FIG. 5A is removed so that the interior of the door pocket 4 can be seen. As shown in FIG. 5B, an upper rail 4 a and a lower rail 4 b are fixed inside the door pocket 4. The door body 3 is slidably supported by the upper rail 4a and the lower rail 4b, and is movable in the X-axis direction. Further, a drive pulley 4c and a driven pulley 4d are arranged inside the door pocket 4 with a gap in the advancing and retracting direction of the door body 3. A timing belt 4e is wound around the drive pulley 4c and the driven pulley 4d. The timing belt 4e is connected to the door body 3 via the belt clamp 4f. Therefore, when the drive pulley 4c is rotationally driven by an electric motor (not shown), the timing belt 4e moves back and forth between the drive pulley 4c and the driven pulley 4d. When the timing belt 4e moves back and forth between the drive pulley 4c and the driven pulley 4d, the belt clamp 4f also moves back and forth. As a result, the door body 3 moves back and forth with respect to the door pocket 4.

As shown in FIG. 5B, the lock device 1 is arranged inside the door pocket 4. The base plate 5 of the lock device 1 is fixed to the door pocket 4. The engaged portion 6 of the lock device 1 is fixed to the door body 3. Further, FIG. 5B shows a state in which the lock device 1 locks the door body 3. Then, when the door body 3 is locked in the state shown in FIG. 5B, that is, when the home fence 2 is in the closed state, the passenger cannot forcibly open the home fence 2 by force.

Further, as described above, if the engaged portion 6 of the lock device 1 is not correctly positioned with respect to the engaging portion and the engaging pawl 9 is pushed down, the engaging pawl 9 and the engaged piece Even if the passenger does not engage with 6b, the door 3 is locked by the lock device 1 when the passenger tries to forcefully open the home fence 2. That is, when an external force is applied to the door body 3 and the door body 3 slightly moves, the engagement claw 9 engages with any one of the four engaged pieces 6 b included in the engaged portion 6.

When the platform fence 2 is opened, the energization of the solenoid 11 of the lock device 1 is stopped. When the energization of the solenoid 11 is stopped, the lock of the door body 3 by the lock device 1 is released. After that, when the door body 3 is moved to the right in the figure, the door body 3 is pulled into the door pocket 4 as shown in FIG. That is, the platform fence 2 is opened.

In the above, an example in which one home fence 2 is installed on the floor surface 14 is shown, but as shown in FIG. 6, two home fences 2 and 2'may be arranged symmetrically. That is, when the home fence 2 and the home fence 2′ are closed, the home fence 2 and the home fence 2′ are placed on the floor surface 14 so that the door tip of the door body 3 and the door tip of the door body 3′ come into contact with each other. It may be installed. Further, the "play" of the lock device 1 provided in the home fence 2 and the "play" of the lock device 1 provided in the home fence 2'may be different. The “play” of one lock device 1 may be larger than the “play” of the other lock device 1. The "play" of one lock device 1 may be set to substantially 0, and the "play" may occur in the other lock device 1.

As described above, according to the embodiment of the present invention, even if the engaged portion 6 of the lock device 1 is misaligned with respect to the engaging portion, the home fence 2 in the closed state can be prying open. In this case, the door body 3 can be locked. Therefore, the positioning adjustment of the engaged portion 6 performed when the lock device 1 is attached to the home fence 2 becomes easy. Further, when the platform 2 is installed on site, it is not necessary to adjust the position of the engaged portion 6 of the lock device 1. Therefore, it is possible to reduce the working time for the positioning adjustment of the engaged portion 6 of the lock device 1 during the manufacturing of the platform 2 and the on-site installation.

However, the technical scope of the present invention is not limited by the above embodiments. The present invention can be freely implemented, modified, or improved within the scope of the technical idea described in the claims.

Particularly, the shapes of the engaging arm 8, the engaging claw 9, the engaged portion 6 and the engaged piece 6b shown in the above embodiment are examples. It is sufficient that these are configured so that the engaging claw 9 and the engaged piece 6b can engage with each other, and the shapes thereof can be arbitrarily selected as long as they are provided.

In the above embodiment, the solenoid 11 is illustrated as the actuator included in the lock device 1, but the actuator is not limited to the solenoid 11. The structure and form of the actuator are not limited. The actuator may be driven by air pressure or hydraulic pressure.

In the above embodiment, an example in which the lock device 1 is provided with the coil spring 10, the limit switch 12, and the stopper 13 is shown, but these are optional components, and the lock device 1 may be configured by omitting them. Can also

In the above embodiment, the example in which the engaging portion of the locking device 1 is fixed to the door pocket 4 and the engaged portion 6 is fixed to the door body 3 has been shown, but the engaged portion 6 is fixed to the door pocket 4, The engaging portion may be fixed to the door body 3.

In the above embodiment, an example in which the lock device 1 is attached to the home fence 2 has been shown, but the door device to which the lock device 1 is attached is not limited to the home fence 2. The installation location of the door device including the lock device 1 is not limited to the platform.

1 locking device, 2 home fence, 3 door body, 4 door pocket, 4a upper rail, 4b lower rail, 4c drive pulley, 4d driven pulley, 4e timing belt, 4f belt clamp, 5 base plate, 5a tab, 6 engaged part , 6a base, 6b engaged piece, 7 latch rotation shaft, 8 engaging arm, 9 engaging claw, 10 coil spring, 11 solenoid, 11a body, 11b rod, 11c link, 12 limit switch, 12a body, 12b lever, 13 stopper, 14 floor

Claims (6)

A lock device for restraining movement of a door body attached to a door bag so that the door body can move back and forth,
A base plate fixed to either one of the door pocket or the door body,
An engagement arm pivotally supported by the base plate so as to swing around the latch rotation axis and having an engagement claw at its tip,
An actuator that is fixed to the base plate and swings the engagement arm around the latch rotation axis;
A plurality of engaged piece to be engaged with the engagement claws, Bei example the engaged portion fixed to the other of the door pocket or the door body,
Wherein the plurality of engagement tabs are arranged parallel to the moving direction of the door body Rutotomoni,
The engagement claw includes a contact surface that abuts the engaged piece when the engagement claw engages with the engaged piece,
The engaged piece is formed on a side far from the base plate, and when the engaged piece engages with the engaging claw, the engaged piece abuts on the abutting surface of the engaging claw, and the base plate A contacted surface for restraining movement in a direction away from the engaged portion, and an inclined surface formed on the side closer to the base plate, when the engaging claws contact the inclined surface, A recess formed between the engaged claw and another engaged piece that is closer to the base plate than the engaged piece and that is adjacent to the engaged piece. And an inclined surface for guiding to
Locking device. The mutual interval of the plurality of engaged pieces provided in the engaged portion is made wider than the width of the engaging claw, and when the engaging claw engages with the engaged piece, play occurs between different said engaged piece adjacent to those該被engaging piece and the engaged piece to the locking device,
The locking device according to claim 1. A door pocket fixed to the floor of the platform,
A door body attached to the door pocket so as to be able to move back and forth,
A platform fence provided with the lock device according to claim 1 or 2. The lock device is mounted in the door pocket, and the engagement claw is configured to be engageable with the engaged piece inside the door pocket.
The platform fence according to claim 3. The base plate is fixed to the door body,
The engaged portion is fixed to the door pocket,
The platform fence according to claim 4. The base plate is fixed to the door pocket,
The engaged portion is fixed to the door body,
The platform fence according to claim 4.

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