JP2010143582A - Door opening and closing device for railway vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening and closing device for a railway vehicle capable of opening and closing a sliding door by a single actuator and having a simple and compact configuration. <P>SOLUTION: This door opening and closing device for the railway vehicle is provided with an electric motor (the rotary actuator), a pinion shaft 9 (rotary transmitting body) connected with an output shaft protruding from the electric motor, and a pair of racks 7, 7 (linear transmitting body) meshing and opposing across the pinion shaft 9 and being freely movable substantially in parallel and in the reverse directions to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an apparatus for opening and closing a door for a railway vehicle.

  This type of railway vehicle door opening and closing device is disclosed as a second embodiment in Patent Document 1, for example. In the configuration of Patent Document 1, two sliding doors are connected via a rack and pinion mechanism to form a double-opening opening / closing door, and a rail moving body that suspends the sliding door and an opening / closing driving of the sliding door are provided. For this reason, the movable member of the linear motor is connected via a buffer body including a buffer spring. Then, the mover is driven in the linear motor to move the sliding door in the closing direction, and even when the sliding door reaches the fully closed position, the mover is further driven to extend the spring of the buffer body. Then, the push-out fitting provided at the tip of the mover pushes and slides the slide cam device against the return spring, and the cam follower that descends accordingly lowers the latch lock. The sliding door is locked in the hole provided in the rack of the pinion mechanism, and thus the sliding door is locked in the fully closed position.

  In this configuration, the driving force of the linear motor is normally distributed for opening / closing driving of the sliding door via the buffer spring of the buffer body, while when the sliding door reaches the fully closed position, the driving force of the linear motor is changed to the slide cam. It is distributed to the device and locked by a latch lock. That is, the driving force of a single linear motor (actuator) is used for both the opening / closing drive and the locking operation of the sliding door, and there is an advantage that the configuration can be simplified.

JP-A-2000-142392 (0040-0054, FIGS. 6-13, rail moving body 3b, movable element 6a, buffer body 12, spring (buffer spring) 12b, push-out fitting 14a, slide cam device 13b, spring (return) Spring) 13c, cam follower 13e, latch lock 13g, hole 7e provided in the rack)

  However, the configuration of Patent Document 1 is configured such that a buffer body, which is a mechanism that switches and distributes the driving force of the linear motor between opening / closing driving of the sliding door and pushing of the slide cam device, slides together with the sliding door. Yes. Accordingly, the overall configuration becomes complicated, and it is necessary to secure a space for the movable stroke of the buffer body, and a simple and compact configuration of the railcar door opening and closing device cannot be realized.

  Moreover, since the structure of patent document 1 is a structure which pushes a slide cam apparatus so that the buffer spring of a buffer body may be extended in the fully closed position of a sliding door, for example, wind pressure is applied to a door just before a fully closed position. When a load (resistance to the closing of the sliding door) due to, for example, is applied, the buffer spring extends before the sliding door reaches the fully closed position. As a result, the push-out fitting at the tip of the mover pushes the slide cam device at an early stage, and the latch lock is lowered even though the position of the latch lock and the hole of the rack is not aligned. There is a risk that the door or the hole may be damaged, or the sliding door may be restrained before it reaches the fully closed position (open state).

  If the linear motor loses its driving force due to a failure of the linear motor or a power failure due to a power failure when the sliding door is locked, the mover and the push-out bracket are pushed by the buffer cam. Since the slide cam device is also returned by the return spring, the latch lock is lifted together with the cam follower, and the lock is released. This means that the closure lock is released unintentionally at the time of failure or power failure.

  In order to prevent the latch lock from descending prematurely even if a slight load is applied to the sliding door, the driving force of the linear motor is lost due to a power failure or the like when the above-described buffer spring is strengthened. Since the force acting in the unlocking direction becomes stronger when broken, the risk of unintentional unlocking increases. That is, the two problems described above are in a contradictory relationship with each other, and a configuration that can solve both problems simultaneously at a satisfactory level has not yet been proposed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a simple and compact configuration in an opening and closing device with a lock that opens and closes and closes a sliding door with a single actuator. Another object of the present invention is to prevent the sliding door driven in the closing direction from being locked before reaching the fully closed position, and at the same time, the actuator loses driving force in the closed locked state. It is another object of the present invention to provide a configuration that can prevent unintentional unlocking.

Means and effects for solving the problem

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the aspect of the present invention, there is provided a lock opening / closing device configured as follows. A rack and pinion mechanism comprising a rack attached to a reciprocating sliding door and a pinion meshing with the rack; an actuator as an opening / closing drive source of the sliding door; and a planetary gear mechanism to which a driving force of the actuator is input; A locking mechanism capable of locking the sliding door in a fully closed position. When the sliding door is in a position other than the fully closed position, the power of the actuator is distributed to the pinion via the planetary gear mechanism. When the sliding door is in the fully closed position, the power of the actuator is distributed to the switching lever that switches between the locked state and the unlocked state of the lock mechanism via the planetary gear mechanism.

  In this configuration, the power of the actuator is distributed through the planetary gear mechanism, one driving the pinion of the rack and pinion mechanism and the other driving the switching lever. Therefore, since the structure for power transmission (distribution) from the actuator is housed in a compact space, the structure can be simplified and a compact opening / closing device with a lock can be provided.

  In addition, since the driving force is distributed from the actuator using a planetary gear mechanism instead of the buffer spring as in Patent Document 1, when the actuator loses the driving force due to a failure or the like with the sliding door locked in the closed position. However, no force in the unlocking direction is applied to the switching lever or the like, and unintentional unlocking is prevented.

  In the above-described opening / closing device with a lock, the lock mechanism prevents the movement of the switching lever when the sliding door is in a position other than the fully closed position, and moves the switching lever when the switching lever is in the fully closed position. It is preferable to be configured to allow

  In this configuration, when the sliding door is in a position other than the fully closed position, the movement of the switching lever is prevented, so that the locking operation is performed after the sliding door has reliably reached the fully closed position. That is, when the sliding door is driven in the closing direction, the locking operation is performed at an early timing, and the locking mechanism is prevented from being damaged or the sliding door is prevented from being restrained before being fully closed.

  The above-mentioned opening / closing device with a lock is preferably configured as follows. The lock mechanism includes a cam, and the cam includes a protrusion that prevents switching from the unlocked state to the locked state. This protrusion can be overridden only when the sliding door driven in the closing direction by the actuator in the unlocked state reaches the fully closed position or the vicinity thereof, and the movement of the switching lever is allowed by this overcoming. .

  Thereby, the simple structure which can prevent the premature lock at the time of driving a sliding door in a closing direction is realizable.

  The above-mentioned opening / closing device with a lock is preferably configured as follows. The lock mechanism engages with a member on the sliding door side in the vicinity of the fully closed position, and is connected via a rotating member that rotates as the sliding door opens and closes, the switching lever, and the cam. In addition, a lock position that restricts the rotation of the rotation member at a position when the sliding door is in the fully closed position, and a moving member that is movable between a position deviated from the lock position are provided. The switching lever is configured to realize the locked state by fixing the moving member at a locked position, and to realize the unlocked state by releasing the fixing of the moving member at the locked position. is doing. The protrusion of the cam is configured to be able to get over by turning of the turning member based on the movement of the sliding door in the closing direction.

  Thereby, the double lock structure of locking a sliding door by locking rotation of a rotation member with a moving member, and also fixing (locking) a moving member is implement | achieved. Therefore, even if the actuator loses driving force due to a failure or the like in a state where the sliding door is closed and locked, unlocking of the sliding door, which is not intended, is extremely reliably prevented.

  In addition, since the protrusion is moved over (that is, the switching lever is allowed to move) by the rotation of the rotating member, it is ensured that the switching lever is moved in the vicinity of the fully closed position. That is, premature lock is more reliably prevented.

The whole front view which shows embodiment provided with the opening-and-closing locking device in the opening-and-closing door for vehicles. The principal part front view which shows the structure of the lock mechanism of a lock release state, and a planetary gear mechanism. The principal part front view which shows a mode that a sun gear is driven to a door closing direction from the state of FIG. 2, and a lock mechanism switches to a locked state. Furthermore, the principal part front view which shows the mode after driving a sun gear to the door closing direction and switching to a locked state.

  Next, embodiments of the invention will be described. FIG. 1 is a front view showing an embodiment in which an opening / closing device with a lock is provided in a vehicle opening / closing door. FIG. 2 is a front view of the main part showing the configuration of the lock mechanism and the planetary gear mechanism in the unlocked state.

  The vehicular door shown in FIG. 1 is configured as a side door that can open and close an opening formed in a side wall of a vehicle such as a railway vehicle, and includes a pair of left and right sliding doors 11 and 12 that are double-opened. The two sliding doors 11 and 12 are provided so as to be able to reciprocate along the guide rail 2 installed horizontally above the opening. More specifically, two hangers 3 are fixed to the upper edge of each of the sliding doors 11 and 12, and a door 4 is rotatably supported on each hanger 3. The door wheel 4 is configured to be able to roll on the guide rail 2.

  The opening / closing door is opened and closed by a lock opening / closing device according to an embodiment of the present invention, and can be automatically locked so as not to open unexpectedly in the closed state. It is dangerous to open a door of a vehicle such as a railway vehicle during traveling, and it is required to be surely locked so as not to open unexpectedly during traveling.

  Details will be described below. A plate-like base 5 is fixed to the upper part of the vehicle side wall (the space above the opening), and two racks 7 and 7 (linear transmission bodies) are attached to rack supports 6 and 6 fixed to the base 5. ) Is supported. The racks 7 and 7 are arranged with the longitudinal direction thereof being horizontal (parallel to the guide rail 2) and are slidable in the longitudinal direction (horizontal direction). ).

  The two racks 7 and 7 are arranged in parallel to each other while forming an appropriate interval in the vertical direction, and are arranged so that the respective tooth portions face each other. A pinion 9 (rotation transmission body) is rotatably arranged so as to mesh with both teeth of the two racks 7 and 7 simultaneously. The pinion 9 is arranged at a central position on the left and right above the opening of the door 1 and sandwiched between the two racks 7 and 7.

  One end of each of the two racks 7 and 7 is connected to the corresponding sliding doors 11 and 12 via arm members 13 and 13 fixed to the hanger 3 on the door end side. A rack and pinion mechanism 10 is constituted by the racks 7 and 7 and the pinion 9, and the two sliding doors 11 and 12 are driven to open and close by the rack and pinion mechanism 10. In addition, the rack and pinion mechanism 10 also plays the role which implement | achieves the symmetrical opening and closing of the sliding doors 11 * 12 by connecting left and right sliding doors 11 * 12.

  A planetary gear mechanism 20 is supported on the base 5. As schematically shown in FIG. 2, the planetary gear mechanism 20 is provided with a sun gear 21 that is rotatably supported and a plurality of outer periphery of the sun gear 21, and can rotate and revolve while meshing with the sun gear 21. It has a planetary gear 24, a carrier 22 that rotatably supports the planetary gear 24, and an internal gear 23 having internal teeth that mesh with the planetary gear 24 on the outside. The three of the sun gear 21, the carrier 22, and the internal gear 23 are arranged on the same axis, and are arranged so as to be rotatable relative to each other. The three axes coincide with the axis of the pinion 9 of the rack and pinion mechanism 10 described above.

  The sun gear 21 is connected to an output shaft of an unillustrated direct drive type electric motor (rotary actuator) that can rotate forward and backward. In addition, you may connect via an appropriate deceleration mechanism. The internal gear 23 is connected to the pinion 9 of the rack and pinion mechanism 10 via a bolt or the like (not shown). Further, the carrier 22 is connected to a lock plate (switching lever) 33 constituting a lock mechanism 30 described later.

  Next, the lock mechanism 30 of the door 1 will be described in detail. As shown in FIGS. 1 and 2, the lock mechanism 30 is pivotally supported on the base plate 5 and a flat lock link (rotating member) 31 rotatably supported on the base body 5. A flat plate-like lock lever (moving member) 32, the above-described lock plate 33, and a catch roller 34 are provided as main components. The lock mechanism 30 is located below the planetary gear mechanism 20.

  As shown in FIG. 2, the lock link 31 is pivotally supported at its center portion with respect to the base body 5 via a support shaft 41, and is engaged / disengaged at one end side and a roller insertion portion 43 at the other side. Are each provided. The engagement / disengagement portion 42 is a concave cutout, and is configured to be engageable with the catch roller 34 attached to the sliding door 11 on one side. The roller insertion portion 43 is also a concave notch, and a first roller 51 (described later) supported by the lock lever 32 is inserted therein. The roller insertion portion 43 includes a rotation stopper 49 that can face the first roller 51 on the side far from the support shaft 41.

  One end of the lock lever 32 is pivotally supported on the base body 5 via a support shaft 44, and two rollers 51 and 52 are provided on the other end side. Specifically, the first roller 51 is supported on one side (the back side in FIG. 2) of the lock lever 32, and the second roller 52 is supported on the other side (the front side in FIG. 2). Yes. The first roller 51 is inserted into the roller insertion portion 43 of the lock link 31.

  A restriction plate 45 is fixed to the lock lever 32, and the restriction plate 45 is located inside a substantially fan-shaped restriction hole 46 formed in the base 5. The restriction plate 45 and the restriction hole 46 define a swing angle range of the lock lever 32. A biasing spring in the form of a torsion coil spring is disposed at the position of the support shaft 44 (not shown), and this biasing spring always causes the locking lever 32 to act in the clockwise direction in FIG.

  The lock plate 33 is a wide lever-like member fixed to the carrier 22 of the planetary gear mechanism 20, and extends downward as viewed from the planetary gear mechanism 20. Further, the lock plate 33 is formed with a curved hole (cam) 47 having a substantially curved shape. Then, the second roller 52 of the lock lever 32 is inserted into the curved hole 47.

  The curved hole 47 has a rotation preventing portion 47a extending in the circumferential direction (substantially horizontal direction) on the proximal end side of the lock plate 33 and a rotation allowing portion 47b extending substantially downward in the radial direction on the distal end side of the lock plate 33. The holes are connected and have a constant width. In other words, a projection 47c is formed at a portion where the rotation prevention portion 47a and the rotation allowance portion 47b are connected (a portion corresponding to the inner periphery of the bending portion), and this projection 47c is the rotation of the second roller 52. The movement from the blocking portion 47a to the rotation allowing portion 47b is blocked.

  In FIGS. 2 to 4, the lock plate 33 and the curved hole 47 are perspectively shown by chain lines for easy understanding of the configuration.

  Further, as shown in FIG. 1, a bracket 35 is fixed to the arm member 13 of the sliding door 11 on one side, and the tip end of the bracket 35 is drawn downward and to the center side, and the catch roller 34 is freely rotatable at the tip end. I support it. The catch roller 34 moves along the guide rail 2 together with the sliding door 11, and is configured to be positioned in the vicinity of the engaging / disengaging portion 42 of the lock link 31 when the sliding doors 11 and 12 are in the vicinity of the closed position. Yes.

  The above is the configuration of the sliding door opening / closing locking device. Next, the opening / closing and locking operations of the sliding doors 11 and 12 in this configuration will be described with reference to FIGS. FIG. 3 is a front view of an essential part showing a state in which the sun gear is driven in the door closing direction from the state of FIG. 2 and the lock mechanism is switched to the locked state. FIG. 4 is a front view of an essential part showing a state after the sun gear is further driven in the door closing direction and switched to the locked state.

  FIG. 2 shows an unlocked state of the lock mechanism 30, and in this state, the engagement / disengagement portion 42 of the lock link 31 is not engaged with the catch roller 34. Further, the lock lever 32 has a posture as shown in FIG. 2 which is slightly inclined downward by the action of the biasing spring. The lock link 31 is also inclined as shown in FIG. 2 because the first roller 51 of the lock lever 32 pushes the bottom of the roller insertion portion 43 downward. 2 is a stopper that is fixed to the base 5 in order to restrict one side of the rotation angle range of the lock link 31.

  Further, in this unlocked state, the second roller 52 of the lock lever 32 is positioned at the end of the curved hole 47 in the lock plate 33 on the rotation blocking portion 47 a side. As shown in FIG. 2, the line connecting the center of the second roller 52 of the lock lever 32 and the center of the support shaft 44 in this unlocked state substantially coincides with the tangential direction of the revolution circle of the planetary gear 24. . That is, it is a dead point. Accordingly, when the sun gear 21 of the planetary gear mechanism 20 is driven by the electric motor in the unlocked state of FIG. 2, the planetary gear 24 does not revolve but only rotates, so that the driving force of the sun gear 21 is entirely controlled by the internal gear 23. Thus, the sliding doors 11 and 12 are driven to open and close.

  In particular, even if the sliding doors 11 and 12 are driven in the closing direction, the second roller 52 cannot get over the projection 47c in the curved hole 47, and therefore the rotation of the lock plate 33 is prevented. The carrier 22 connected to 33 is also prevented from rotating. Accordingly, when the sliding doors 11 and 12 do not reach the vicinity of the fully closed position, the driving force of the sun gear 21 is all distributed to the pinion 9. In other words, except when the sliding doors 11 and 12 are in the vicinity of the fully closed position, switching from the unlocked state to the locked state is blocked by the protrusion 47c. This means that the premature lock which is a concern in the configuration of Patent Document 1 can be reliably prevented in the configuration of the present embodiment.

  Next, as a result of the sun gear 21 being driven in the direction to close the sliding doors 11 and 12, the sliding doors 11 and 12 approach the fully closed position, and the catch roller 34 attached to the sliding door 11 is indicated by a thick arrow in FIG. Suppose that the lock link 31 approaches the engagement / disengagement part 42 as described above. When the sun gear 21 (sliding doors 11 and 12) is further driven in the closing direction from the state shown in FIG. 2, the catch roller 34 moving in the direction of the thick arrow is engaged with the engagement / disengagement portion 42 (catch by the engagement / disengagement portion 42). 3), the lock link 31 is rotated as shown in FIG.

  When the lock link 31 rotates, the bottom surface portion of the roller insertion portion 43 pushes up the first roller 51 of the lock lever 32, so that the lock lever 32 rotates upward against the biasing spring as shown in FIG. And it becomes almost horizontal posture. At the same time, the lock link 31 also rotates in the standing direction. When the sliding doors 11 and 12 reach the fully closed position, the lock link 31 assumes a substantially vertical posture, and the rotation stopper 49 provided on the roller insertion portion 43 faces the first roller 51 of the lock lever 32 (see FIG. 3 shows the state immediately before facing each other). After this facing, the counterclockwise rotation of the lock link 31 is restricted by the first roller 51 and the rotation stopper 49, so that the lower catch roller 34 is fixed by the engagement / disengagement part 42 so as not to move. become. Thus, the sliding door 11 and the sliding door 12 on the other side connected to the sliding door 11 via the rack and pinion mechanism 10 are made immovable while maintaining the fully closed position (first lock).

  Further, as shown in FIG. 3, the second roller 52 of the lock lever 32 protrudes from the rotation prevention portion 47a toward the rotation permission portion 47b in the curved hole 47 as the lock lever 32 rotates upward. Move over the road. As a result, the lock plate 33 is allowed to rotate around the axis of the planetary gear mechanism 20, and the carrier 22 connected to the lock plate 33 is allowed to rotate (in other words, the planetary gear 24 is revolved). On the other hand, since the sliding door 11 cannot move in the closing direction after reaching the fully closed position, the rotation of the internal gear 23 connected to the sliding door 11 via the rack and pinion mechanism 10 is also prevented. Therefore, the driving force of the sun gear 21 that continues to rotate is now transmitted (distributed) to the carrier 22, and as shown in FIG. 4, the lock plate 33 rotates counterclockwise in the drawing, and the second The roller 52 reaches the end of the curved hole 47 on the rotation permission portion 47b side. In this state, the downward rotation of the lock lever 32 is prevented by the second roller 52 being positioned at the rotation permission portion 47b (second lock).

  As described above, as shown in FIG. 2 → FIG. 3 → FIG. 4, after the sliding doors 11 and 12 are moved to the fully closed position, the lock mechanism 30 is automatically switched to the locked state, and the sliding doors 11 and 12 are closed. It is locked in the locked state. Therefore, only by driving the sun gear 21 of the planetary gear mechanism 20 with a single actuator, the lock interlocked with the closing of the sliding doors 11 and 12 can be realized, and the drive configuration can be simplified.

  Further, in the locked state of FIG. 4, the first lock is performed by restricting the rotation of the lock link 31 by the lock lever 32, and the rocking of the lock lever 32 is restricted by the lock plate 33. Two locks are performed. That is, since it is possible to apply a double lock, even if the electric motor falls into a power supply failure due to, for example, a power failure or failure of the vehicle, the rotation of its output shaft (the sun gear 21) becomes free. Opening of the sliding doors 11 and 12 is extremely reliably prevented by the double lock. This means that even if the vehicle has a power failure or the like, it is possible to prevent the sliding doors 11 and 12 from being unexpectedly opened due to wind pressure or the like.

  The switching from the locked state to the unlocked state and the opening of the sliding doors 11 and 12 may be performed simply by driving the sun gear 21 in the direction opposite to the closing time by the electric motor. That is, in FIG. 4 that is in the locked state, the sliding door 11 is locked by the lock link 31, so that the rotation of the internal gear 23 is prevented, while the second roller 52 is positioned at the rotation allowing portion 47 b. In addition, rotation of the lock plate 33, in other words, rotation of the carrier 22 is allowed. Therefore, when the sun gear 21 is driven in the opposite direction to the arrow from the state of FIG. 4, all the driving force of the sun gear 21 is transmitted (distributed) to the carrier 22, and the lock plate 33 swings in the opposite direction to the arrow to lock the lock lever 32. Since the second roller 52 passes through the rotation allowing portion 47b, the second lock is released, and the lock lever 32 is rotated downward by the action of the biasing spring.

  When the lock lever 32 is rotated downward, the first roller 51 passes through the rotation stopper 49, so that the rotation restriction of the lock link 31 is released. This means that the lock (first lock) of the sliding door 11 is released and the rotation of the internal gear 23 is allowed. On the other hand, the second roller 52 enters the rotation blocking portion 47a of the curved hole 47 as the lock lever 32 rotates downward, so that the rotation of the lock plate 33 and the carrier 22 is blocked by the protrusion 47c of the curved hole 47. . As a result, the driving force of the sun gear 21 in the planetary gear mechanism 20 is transmitted (distributed) to the internal gear 23 side, so that the sliding doors 11 and 12 are driven in the opening direction via the rack and pinion mechanism 10. Then, the catch roller 34 moves to the open side while rotating the lock link 31 to some extent, finally leaves the engagement / disengagement part 42 and further moves to the open side.

  As described above, the sliding door opening / closing lock device for a vehicle according to the present embodiment includes a rack and pinion mechanism including racks 7 and 7 attached to reciprocating sliding doors 11 and 12 and pinions 9 meshing with the racks 7 and 7. 10, an electric motor as an opening / closing drive source of the sliding doors 11 and 12, a planetary gear mechanism 20 to which a driving force of the electric motor is input, and a lock mechanism 30 capable of locking the sliding doors 11 and 12 in a fully closed position. And comprising. When the sliding doors 11 and 12 are in a position other than the fully closed position, the power of the electric motor is distributed from the internal gear 23 of the planetary gear mechanism 20 to the pinion 9. When the sliding doors 11 and 12 are in the fully closed position, the power of the electric motor is distributed from the carrier 22 of the planetary gear mechanism 20 to the lock plate 33 that switches between the locked state and the unlocked state of the lock mechanism 30. .

  Thus, the power of the electric motor is distributed through the planetary gear mechanism 20, one driving the pinion 9 of the rack and pinion mechanism 10 and the other driving the lock plate 33. Since the output of the planetary gear mechanism 20 (specifically, the output of the internal gear 23) is connected to the pinion 9 of the rack and pinion mechanism 10, the configuration for power distribution is the rack and pinion mechanism 10. And it is stored in a compact space. Therefore, the structure for transmitting (distributing) the driving force from the electric motor can be simplified, and an open / close locking device excellent in space saving can be provided.

  Further, since the driving force is distributed from the electric motor using the planetary gear mechanism 20 instead of the buffer spring as in Patent Document 1, the electric motor breaks down while the sliding doors 11 and 12 are locked in the closed position. Even when the driving force is lost due to the above, no force in the unlocking direction is applied to the lock plate 33 or the like, and unintentional unlocking is prevented. It is to be noted that a lock plate 33 and a lever (not shown) provided at a position accessible from inside or outside the vehicle are connected by a connecting member such as a wire (not shown), so that this lever can be used by a person in an emergency. It is possible to manually open the sliding doors 11 and 12 after operating and swinging the lock plate 33 in the unlocking direction to release the lock.

  In the present embodiment, the lock mechanism 30 prevents the lock plate 33 from rotating when the sliding doors 11 and 12 are in a position other than the fully closed position (FIG. 2), and the sliding doors 11 and 12 are fully closed. When in position (FIG. 3 or FIG. 4), the lock plate 33 is allowed to rotate.

  Thereby, it is ensured that the locking operation is performed after the sliding doors 11 and 12 have surely reached the fully closed position. That is, when the sliding doors 11 and 12 are driven in the closing direction, the locking operation is performed too early, and the lock mechanism 30 is prevented from being damaged or the sliding doors 11 and 12 being restrained before being fully closed. .

  In this embodiment, the lock mechanism 30 includes a cam formed of a curved hole 47, and the cam (curved hole 47) includes a protrusion 47c that prevents switching from the unlocked state to the locked state. . The second roller 52 as the follower node of the cam mechanism has the projection 47c in FIG. 2 only when the sliding door 11 driven in the closing direction by the electric motor in the unlocked state reaches the vicinity of the fully closed position. It is configured to be able to get over as shown. Then, the locking plate 33 is allowed to rotate by getting over the protrusion 47c.

  Therefore, it is possible to realize a simple configuration capable of preventing the lock at the above-mentioned premature timing.

  Further, the lock mechanism 30 engages with a catch roller (member on the sliding door side) 34 provided on the sliding door 11 in the vicinity of the fully closed position, and rotates with the opening and closing movement of the sliding door 11. Is provided. Further, the lock mechanism 30 is provided with a lock lever 32, and the lock lever 32 is connected to the lock plate 33 through a cam formed of a curved hole 47. Further, the lock lever 32 has a horizontal position (position in FIG. 4; corresponding to the lock position) that restricts the rotation of the lock link 31 at the position when the sliding doors 11 and 12 are in the fully closed position. It is possible to move between a position that is tilted away from the position of the posture (the position in FIG. 2). The lock plate 33 realizes the locked state by fixing the lock lever 32 in a horizontal posture position (the position in FIG. 4), and releases the fixation in the horizontal posture position. The lock release state is realized. Then, as shown in FIG. 2, the lock lever 32 is pushed up (by the roller insertion portion 43 pushing up the first roller 51) by the rotation of the lock link 31 based on the movement of the sliding door 11 in the closing direction, The second roller 52 is able to get over the protrusion 47c in the curved hole 47.

  Accordingly, the sliding doors 11 and 12 are locked by locking the rotation of the lock link 31 by the lock lever 32 (first lock), and the lock lever 32 is fixed by the lock plate 33 (second lock). Automatic double lock structure is realized. Therefore, even when the electric motor loses driving force due to a failure or the like in a state where the sliding doors 11 and 12 are locked at the fully closed position, the unlocking of the sliding doors 11 and 12 that is unintentional is prevented with certainty.

  Moreover, the latch lock of a prior art latches in the hole provided in the rack of a rack and pinion mechanism. Therefore, this hole is always larger than the lock pin, so there is a gap when the lock pin is inserted in the hole, and the sliding door rattles due to wind pressure, etc. There was a problem that could affect the service life. On the other hand, the locking method of the present invention does not cause such a problem because there is no gap in the locked state.

  Further, since the protrusion of the second roller 52 over the projection 47c (in other words, the rotation of the lock plate 33 is allowed) is performed by the rotation of the lock link 31, the rotation of the lock plate 33 is the fully closed position of the sliding door 11. To be performed in the vicinity of. That is, the locking operation at an early timing is more reliably prevented.

  The railcar door opening and closing device according to the present embodiment includes an electric motor and a pinion 9 connected to an output shaft protruding from the electric motor (more specifically, a sun gear 21 and a sun gear 21 directly connected to the output shaft, Through the meshing planetary gear 24 and the internal gear 23 meshing with the planetary gear 24, the pinion 9) connected to the output shaft is meshed with the pinion 9 so as to face each other and move in substantially parallel and reverse directions. And a free pair of racks 7 and 7.

  In this configuration, since the railcar door opening and closing apparatus includes the electric motor, it is not necessary to include an actuator that needs to ensure a large space unlike a linear motor that has been conventionally used. Therefore, a simple and compact configuration of the railcar door opening and closing device can be realized.

  The railcar door opening and closing device includes a slide support portion 8 that guides the pair of racks 7 and 7.

  In this configuration, the racks 7 and 7 are smoothly slid.

  In the door opening and closing device for a railway vehicle, the electric motor is disposed at the left and right center above the door opening.

  In this configuration, by making the lengths of the racks 7 and 7 equal on the left and right, the railcar door opening and closing device can be configured in a compact manner.

  Although the preferred embodiment of the present invention has been described above, the above embodiment can be implemented with the following modifications, for example.

  (1) In the above embodiment, the sun gear 21 is connected to the output shaft of the electric motor, the internal gear 23 is connected to the pinion 9, and the carrier 22 is connected to the lock plate 33. However, the present invention is not limited to this. Are connected to the pinion 9, and the internal gear 23 is connected to the electric motor.

  (2) In the above-described embodiment, the cam between the lock plate 33 and the lock lever 32 is configured using the curved hole 47 and the second roller 52. However, the present invention is not limited to this, and there are various known configurations and types. A cam can be employed. For example, a lock mechanism including a link and a pin can be employed. Moreover, it is not limited to setting it as the locking mechanism which implement | achieves a double lock like the said embodiment.

  (3) Although the double swing type sliding doors 11 and 12 are used in the above embodiment, the configuration of the present invention can be applied even in the case of a single swing type.

1 Opening / closing door 2 Guide rail 7.7 Rack (Linear transmission body)
8 Slide support (guide member)
9 Pinion (rotation transmission body)
DESCRIPTION OF SYMBOLS 10 Rack and pinion mechanism 11 * 12 Sliding door 20 Planetary gear mechanism 21 Sun gear 22 Carrier 23 Internal gear 30 Lock mechanism 31 Lock link (rotating member)
32 Lock lever (moving member)
33 Lock plate (switching lever)

Claims (5)

A rotary actuator;
A rotation transmission body connected to an output shaft protruding from the rotation actuator;
A door opening and closing device for a railway vehicle, comprising: a pair of linear transmission bodies that are engaged with each other with the rotation transmission body therebetween and are movable in parallel and in opposite directions.   The door opening and closing device for a railway vehicle according to claim 1, further comprising a guide member that guides the pair of linear transmission bodies.   The door opening / closing device for a railway vehicle according to claim 1 or 2, wherein the rotary actuator is disposed at a center of the left and right above the door opening. A pinion provided above the opening of the sliding door type opening / closing door and at the center of the left and right,
A pair of racks that are engaged with the pinion and are opposed to each other so as to sandwich the pinion vertically so that the longitudinal direction is horizontal, and further coupled to the door;
A railway vehicle door opening and closing device comprising: a direct drive type electric motor capable of rotating in the forward and reverse directions so that the axis of the pinion and the axis of the output shaft coincide with each other. The railcar door opening and closing device according to claim 4, further comprising a slide support portion that guides the pair of racks.

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