JP2008121244A - Opening and closing apparatus with lock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and compact opening and closing apparatus with a lock which surely locks slide-apart sliding doors, and also performs the opening/closing and locking operations of the sliding doors with a single actuator. <P>SOLUTION: This opening and closing apparatus with lock includes: a rack and pinion mechanism, for opening and closing a pair of slide-apart sliding doors 11A, 11B; an actuator functioning as an opening/closing drive source; a locking mechanism 60 locking the sliding doors 11A, 11B in a fully closed position by restraining the movement of lock members 14A, 14B secured to the sliding doors; a changing mechanism 33 for the locking mechanism 60; and a planetary gear mechanism 20, into which the driving force of the actuator is inputted and which outputs the driving force to the pinion 9 and the changing mechanism 33. When the sliding doors 11A, 11B are in the fully closed positions, the driving force is outputted to the changing mechanism 33. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lock-opening / closing device that can open and close a draw-type sliding door that is attached to a housing so as to be reciprocally movable and can be locked in a fully closed position.

  Conventionally, as an opening / closing device with a lock that can open and close a sliding door attached to a housing so as to be reciprocally movable and can be locked in a fully closed position, for example, it is described as a second embodiment of Patent Document 1. There are known sliding door opening and closing devices. In the configuration of Patent Document 1, a sliding movable door is formed by connecting two sliding doors via a rack and pinion mechanism, and a rail moving body that suspends the sliding door and a sliding door opening / closing drive. It is the structure which connected the needle | mover of the linear motor for through 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 2000-142392 A

  However, in the configuration of Patent Document 1, racks are arranged above and below the pinion gear, and each rack is connected to each of a pair of left and right sliding doors to open and close the draw-type sliding doors. By restraining the rack, the other sliding door is restrained via the pinion gear. Therefore, when the pinion gear or the rack is broken, the other door may be unlocked. Further, although the pinion gear and the rack can be strengthened, there are problems such as an increase in installation space and an increase in cost.

  In addition, the configuration of Patent Document 1 is configured such that a shock absorber, which is a mechanism that switches and distributes the driving force of the linear motor between the sliding door opening / closing drive and the sliding 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 sliding door opening / closing lock device cannot be realized.

  Further, since the slide cam device is pushed in such a manner that the buffer spring of the buffer is extended at the fully closed position of the sliding door, for example, a load due to wind pressure or the like (sliding door closing) is applied to the door immediately before the fully closed position. When resistance is applied, the buffer spring is extended 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 closing lock is released unintentionally at the time of failure or power failure. When this is used as a side door of a railway vehicle, it means that the door opens before the vehicle stops, which is not preferable in terms of safety.

  Note that if the above-mentioned buffer spring is strengthened to prevent the latch lock from being lowered 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. 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.

  In view of the above circumstances, the present invention has a simple and compact configuration capable of securely locking a draw-type sliding door and capable of opening / closing and closing the sliding door with a single actuator. It is an object of the present invention to provide a lock opening / closing device.

Means and effects for solving the problems

  The present invention relates to a lock-opening / closing device that can open and close a draw-type sliding door that is attached to a housing so as to be reciprocally movable and can be locked in a fully closed position. And the opening / closing apparatus with a lock | rock which concerns on this invention has the following some features, in order to achieve the said objective. In other words, the opening / closing device with a lock according to the present invention includes the following features alone or in combination.

  In order to achieve the above object, the first feature of the opening and closing device with a lock according to the present invention is that a pair of racks respectively attached to a pair of sliding sliding doors capable of reciprocating with respect to a housing and the pair of racks A rack and pinion mechanism composed of a pinion that meshes with each other, an actuator as an opening / closing drive source of the sliding door, and a housing, and restrains movement of a lock member fixed to each sliding door in the pair of sliding doors. A lock mechanism capable of locking the pair of sliding doors in a fully closed position; a switching mechanism for switching between a locked state and an unlocked state of the lock mechanism; an input unit to which the driving force of the actuator is input; and the pinion And a second output capable of outputting the driving force to the switching mechanism. Comprising a planetary gear mechanism having a part, and a, when the sliding door is in the fully closed position, it is the driving force is outputted to the switching mechanism from the second output section.

  According to this structure, since the movement of the lock member fixed to each sliding door in the pair of sliding doors is restrained by the locking mechanism, the pair of sliding doors can be locked independently. Thereby, even when the rack and pinion mechanism breaks down, it is possible to keep the movement of both sliding doors locked. Conversely, when the rack and pinion mechanism is functioning normally, even if one of the sliding doors is unlocked due to a failure or the like, the one sliding door is connected to the other sliding door via the rack and pinion mechanism. Therefore, as long as the lock of the other sliding door is effective, the one sliding door can be maintained in the locked state. Accordingly, the draw type sliding door can be locked more reliably.

  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 mechanism. 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 mechanism or the like, and unintentional unlocking is prevented.

  Further, a second feature of the opening / closing device with a lock according to the present invention is that the switching mechanism switches between a locked state and an unlocked state of the lock mechanism by moving with the driving of the second output unit. And the locking mechanism prevents movement of the switching member when the sliding door is in a position other than the fully closed position, and allows movement of the switching member when the sliding door is in the fully closed position. It is configured as follows.

  According to this configuration, when the sliding door is in a position other than the fully closed position, the switching member is prevented from moving, 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 it is possible to prevent the locking mechanism from being damaged or the sliding door from being restrained before being fully closed.

  A third feature of the opening / closing device with a lock according to the present invention is that the lock mechanism is a link mechanism that can be deformed into a linear state and a bent state as the switching member moves, and the sliding door is in a fully closed position. When the sliding door is in the fully closed position, the link mechanism is fixed to the sliding door by being deformed into a linear state when the sliding door is in the fully closed position. The movement of the lock member is restricted.

  According to this configuration, the movement of the sliding door can be locked by making the link mechanism linear in the fully closed position, and the link mechanism is held in the bent state by the link holding mechanism in other than the fully closed position. The lock operation is performed after reaching the closed position. Thus, the lock mechanism can be formed compactly because it is driven using the link mechanism, and can be stably driven because it is mechanically driven.

  According to a fourth feature of the opening / closing device with a lock according to the present invention, the lock member includes a lock pin fixed to the sliding door so as to extend in a vertical direction, and the link holding mechanism includes both ends of the link mechanism. A first engagement portion that is pivotally installed in the vicinity of the portion and engages with the lock pin in the fully closed position, and a second engagement portion that engages with the end of the link mechanism in a linear state in the fully closed position. When the sliding door is in a position other than the fully closed position, the engaging member prevents the switching member from moving by preventing the link mechanism from shifting to a linear state. At the same time, when the sliding door is moved in the closing direction, the switching member is moved by being urged by the lock pin and rotating the end of the link mechanism to a position where it can engage with the second engaging portion. Allow Is Rukoto.

  According to this configuration, in the fully closed position, the engaging member is engaged with the lock pin. And when a link mechanism extends in a straight line state, it engages with an end of the link mechanism, and rotation is restrained. Accordingly, the movement of the lock pin is restricted in a state where the lock pin is engaged with the engagement member. As described above, the engagement member can prevent the link mechanism from shifting to the linear state except at the fully closed position, and can restrain the movement of the lock pin at the fully closed position. Therefore, the number of parts necessary for forming the lock mechanism can be reduced, and a more compact lock mechanism can be obtained.

  A fifth feature of the opening / closing device with a lock according to the present invention is that the switching member is slidable in one direction with respect to the lock mechanism, and has a curved slit portion on the bottom surface. The link mechanism operates in a plane parallel to the bottom surface of the lock slider, and a connection pin provided at one connection point is inserted into the slit portion, and the link slider moves along with the movement of the lock slider. The connecting pin is moved along the slit portion, whereby the link mechanism is deformed into a straight state and a bent state.

  According to this configuration, the link mechanism can be deformed into a linear state and a bent state by moving the lock slider in one direction without interposing another member between the lock slider and the link mechanism. . Therefore, the installation space for the lock mechanism can be reduced.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an embodiment in which an opening / closing device with a lock is installed on a vehicle opening / closing door. FIG. 2 is a front view of an essential part showing the configuration of the lock opening / closing device in the unlocked state. FIG. 3 is a schematic diagram showing the configuration of the lock mechanism as viewed from below (the direction of arrow X in FIG. 2) of the lock mechanism shown in FIG. FIG. 4 is a front view of the main part showing the configuration of the lock opening / closing device in a locked state, and FIG. 5 is a view of the lock mechanism shown in FIG. 4 viewed from below (in the direction of arrow X in FIG. 4). It is the schematic which shows the structure of these. FIG. 6 is a partial cross-sectional schematic diagram showing the lock mechanism and the lock slider as seen from the direction of movement of the lock slider (the arrow Y direction in FIG. 4).

  A vehicular door 1 shown in FIG. 1 is configured as a door capable of opening and closing 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 11A and 11B. . The two sliding doors 11A and 11B are provided so as to be able to reciprocate along the guide rail 2 installed horizontally above the opening. More specifically, hangers 3A and 3B are fixed to the upper edges of the sliding doors 11A and 11B, respectively, and a door wheel 4 is rotatably supported on the hangers 3A and 3B. The door wheel 4 is configured to be able to roll on the guide rail 2.

  The vehicular door 1 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. When the side door of a vehicle such as a railway vehicle is opened during traveling, it is dangerous, 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 body 5 is fixed to an upper portion (a space above the opening) of the side wall (housing) of the vehicle, and two racks 7A and 7B are supported by a rack support 6 fixed to the base body 5. ing. The racks 7A and 7B are arranged with their longitudinal direction oriented horizontally (parallel to the guide rail 2) and supported by the slide support portion 8 so as to be slidable in the longitudinal direction (horizontal direction). ing.

  The two racks 7A and 7B 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. The pinion 9 is rotatably arranged so as to mesh with both teeth of the two racks 7A and 7B at the same time. The pinion 9 is disposed at a central position on the left and right above the opening of the door 1 and sandwiched between the two racks 7A and 7B.

  Arm members 13A and 13B are installed at one end of each of the two racks 7A and 7B. The arm members 13A and 13B are fixed to the hangers 3A and 3B via coupling members 15a and 15b, respectively. That is, one end of each of the racks 7A and 7B is connected to the corresponding sliding door 11A and 11B via the arm members 13A and 13B. A rack and pinion mechanism 10 is constituted by the racks 7A and 7B and the pinion 9, and the two sliding doors 11A and 11B are opened and closed by the rack and pinion mechanism 10. The rack and pinion mechanism 10 also plays a role of realizing symmetrical opening and closing of the sliding doors 11A and 11B by connecting the left and right sliding doors 11A and 11B.

  As shown in FIGS. 2 and 4, lock pins 14 </ b> A and 14 </ b> B (lock members) extending upward in the vertical direction are fixed to the pair of arm members 13 </ b> A and 13 </ b> B, respectively. When the lock pins 14A and 14B are restrained by a lock mechanism 60 described later, the movement of the pair of sliding doors 11A and 11B is locked.

  A planetary gear mechanism 20 is supported on the base 5 (see FIGS. 2 and 4). The planetary gear mechanism 20 includes a sun gear 21 (input unit) that is rotatably supported, a planetary gear 24 that is arranged on the outer periphery of the sun gear 21 and that can rotate and revolve while meshing with the sun gear 21. An internal gear 22 (first output portion) having internal teeth meshing with the planetary gear 24 on the outside and a carrier 23 (second output portion) that rotatably supports the planetary gear 24 are provided. The three of the sun gear 21, the internal gear 22, and the carrier 23 are arranged on the same axis, and are arranged so as to be rotatable relative to each other. The three axes also coincide with the pinion axis of the rack and pinion mechanism 10 described above.

  The sun gear 21 is connected to an output shaft of a direct drive type electric motor (actuator) (not shown) that can rotate forward and reverse. In addition, you may connect via an appropriate deceleration mechanism. The internal gear 22 is connected to the pinion 9 of the rack and pinion mechanism 10 through a bolt or the like (not shown). Further, the carrier 23 is connected to a pulling member 70 for pulling a lock slider 33 (switching member) for switching between a lock state and a lock release state of a lock mechanism 60 described later.

  The pulling member 70 and the lock slider 33 are installed so as to be able to reciprocate in one direction along a guide shaft 72 extending in parallel with the racks 7A and 7B fixed to the base body 5, and constitute a lock state switching mechanism. ing. The pulling member 70 is coupled to the carrier 23 so as to be movable in the one direction as the carrier 23 rotates. A coil spring-like torque limit spring 71 is arranged between the pulling member 70 and the lock slider 33. The torque limit spring 71 applies an elastic force to the traction member 70 and the lock slider 33 so as to press the traction member 70 against the lock slider 33. That is, the torque limit spring 71 is disposed so as to suppress relative movement of the pulling member 70 with respect to the lock slider 33.

  The lock slider 33 includes an attachment portion 33a and an attachment portion 33b formed on the upper end thereof so as to be slidable with the guide shaft 72 at a predetermined interval in the movement direction. The front portion 33c extends downward from the attachment portion 33a and the attachment portion 33b, and the bottom portion 33d is formed by being bent 90 degrees from the lower end of the front portion 33c in the depth direction of the paper in FIG. (See FIGS. 3, 5, and 6). The traction member 70 is attached to the guide shaft 72 between the attachment portion 33a and the attachment portion 33b, and the torque limit spring 71 is the tip of the lock slider 33 in the locking direction (indicated by an arrow in FIGS. 2 and 4). It is attached to the guide shaft 72 between the attachment portion 33b located on the side and the pulling member 70. Since the torque limit spring 71 is attached in an axially compressed state (elastically deformed state), the traction member 70 receives a biasing force toward the attachment portion 33a, and the end portion of the traction member 70 is attached to the attachment portion 33a. And held in contact with the

  As shown in FIGS. 3 and 5, the bottom surface portion 33 d of the lock slider 33 has a curved slit 33 e (slit portion). The slit 33e includes a first hole portion α extending in parallel with the moving direction, and a second hole portion formed so as to be smoothly curved in a direction substantially perpendicular to the moving direction continuously from the first hole portion α. β.

  Next, the lock mechanism 60 of the door 1 will be described in detail. FIG. 7 is a partial cross-sectional schematic view of the locking mechanism 60 in the locked state as viewed from the horizontal direction. The lock mechanism 60 is a mechanism that operates in a horizontal plane, and is fixed to the base 5 so as to be adjacent to the upper side (the planetary gear mechanism 20 side) of the bottom surface portion 33d of the lock slider 33. It is installed (see FIGS. 2 and 4).

  As shown in FIGS. 3 and 5, the lock mechanism 60 includes a link mechanism 61 that can be deformed into a linear state and a bent state in a horizontal plane, and a link holding mechanism 65 that operates in the horizontal plane. The link mechanism 61 is formed by connecting three links 62a, 62b, and 62c. The central link 62a is rotatably fixed to the base 5 by a connecting pin 63a at the center in the longitudinal direction. One end of the link 62b is connected to one end of the central link 62a by a connecting pin 63b. One end of the link 62c is connected to the other end of the link 62a by a guide connecting pin 63c. Pins 63d and 63e are provided at the ends of the links 62b and 62c opposite to the connection point with the link 62a.

  As shown in FIGS. 3, 5, and 7, the pins 63 d and 63 e positioned at the end of the link mechanism 61 are respectively guide grooves 80 </ b> A formed in a straight line parallel to the moving direction of the lock slider 33 in the base body 5. , 80B (indicated by a two-dot chain line in FIGS. 3 and 5), an end portion is inserted and is movably installed along the guide grooves 80A and 80B. That is, the movement of the pins 63d and 63e is regulated by the guide grooves 80A and 80B, respectively. Since the ends of the pins 63d and 63e on the side inserted into the guide grooves 80A and 80B are formed as rollers (see FIG. 4), the friction with the guide grooves 80A and 80B is reduced, and the end portions are moved. It becomes possible to make it smooth. Further, the ends of the pins 63d and 63e on the side of the lock slider 33 are also formed as rollers (see FIG. 4), reducing friction when moving along edges of engagement members 66A and 66B described later, The operation can be stabilized.

  Further, the end of the link coupling 61 on the side of the lock slider 33 of the guide connecting pin 63 c is formed as a roller and is inserted into the slit 33 e of the lock slider 33. Therefore, the position of the guide connecting pin 63 c is regulated by the position of the lock slider 33. Accordingly, it is possible to switch the link mechanism 61 between the linear state and the bent state by the movement of the lock slider 33.

  The link holding mechanism 65 has a pair of engaging members 66A and 66A installed in the vicinity of both ends of the link mechanism 61 so as to be rotatable in a horizontal plane symmetrically with respect to the link mechanism 61 (with respect to the connecting pin 63a). 66B and a connecting spring 69 that connects the pair of engaging members. The engaging members 66A and 66B are provided with first engaging portions 67A and 67B and second engaging portions 68A and 68B, which are formed in a concave shape, on the peripheral edge portions of the engaging members 66A and 66B. The rotation shafts 81A and 81B are fixedly installed on the base 5 (see FIG. 7). A spanning member 82 is fixed to the pair of pivot shafts 81A and 81B, and a connecting pin 63a for pivotally fixing the center link 62a of the link mechanism 61 is the spanning section. It is supported by the member 82 (refer FIG. 2, FIG. 4).

  In a state where the link holding mechanism 65 is not receiving a force from the outside, the engaging members 66A and 66B receive a force from the connecting spring 69 and are held in the state shown in FIG. At this time, the engaging members 66A and 66B restrain the movement of the link mechanism 61 extending linearly by the outer edge portion (the portion indicated by the arrow P1 in FIG. 3). As described above, when the link mechanism 61 is held in the bent state by the engaging members 66A and 66B, the lock slider 33 is locked in the locking direction (indicated by the arrow in FIG. 3) via the slit 33e and the guide connecting pin 63c. The movement in the direction indicated by is restricted.

  On the other hand, the engagement members 66A and 66B are configured so that the lock pins 14A and 14B fixed to the sliding doors 11A and 11B move in the closing direction (the direction indicated by the arrow in FIG. 3), respectively. The edges of 67A and 67B (portions indicated by P2 in FIG. 3) are biased, and the second engaging portions 68A and 68B are brought closer to the link mechanism 61 against the biasing force of the connecting spring 69 (arrow R1 in FIG. 3). It is formed so that it can be rotated in the direction indicated by. In the state in which the sliding doors 11A and 11B are in the fully closed position, as shown in FIG. 5, the lock pins 14A and 14B and the first engaging portions 67A and 67B are engaged, and the second engaging portions 68A and 68B are engaged. The position is a position at which the pin 63d or 63e located at the end of the link mechanism 61 can be engaged. That is, the engaging members 66A and 66B shift to a state where the deformation of the link mechanism 61 is not restrained. At this time, if the lock slider 33 moves in the locking direction, the link pin 61 moves from the bent state to the linear state by moving the guide connecting pin 63c along the slit 33e. And pin 63d * 63e located in the edge part of the link mechanism 61 engages with 2nd engaging part 68A * 68B of engaging member 66A * 66B. Thereby, rotation of engagement member 66A * 66B is restrained. Therefore, the movement of the lock pins 14A and 14B in the opening direction (indicated by arrows in FIG. 5) is restrained by the first engaging portions 67A and 67B.

  Next, opening / closing and locking operations of the sliding doors 11A and 11B will be described with reference to FIGS. FIG. 2 shows a state where the sliding doors 11A and 11B are moving in the closing direction, and shows a state where the lock state of the lock mechanism 60 is released. In this state, the lock pins 14A and 14B are located away from the lock mechanism 60, and the lock mechanism 60 is held in the state shown in FIG.

  In this unlocked state, the link mechanism 61 is in a bent state, and the movement of the link mechanism 61 extending linearly is restricted by the engaging members 66A and 66B. As a result, the movement of the lock slider 33 in the locking direction is restrained via the guide connecting pin 63c of the link mechanism 61 and the slit 33e.

  Accordingly, when the sun gear 21 of the planetary gear mechanism 20 is driven by the electric motor in the unlocked state of FIGS. 2 and 3, the sun gear 21 is transmitted to the pinion 9 via the internal gear 22, or the planetary gear 24 revolves. The driving force is transmitted so as to elastically deform the torque limit spring 71 through the carrier 23 that rotates with the rotation.

  Here, the torque limit spring 71 has a predetermined elastic force that suppresses the rotation of the carrier 23 accompanying the revolution of the planetary gear 24 so as to balance the movement resistance when the sliding doors 11A and 11B are normally closing. The traction member 70 connected to the carrier 23 is biased so as to act on the carrier 23. Therefore, when the sun gear 21 of the planetary gear mechanism 20 is driven by the electric motor during the normal closing operation, the planetary gear 24 does not revolve but only rotates, so that the driving force of the sun gear 21 is all pinion via the internal gear 22. 9, the sliding doors 11A and 11B are driven to open and close.

  Further, even if the sliding doors 11A and 11B are moved in the closing direction, the engaging members 66A and 66B of the lock mechanism 60 that engage with the lock pins 14A and 14B receive the elastic force by the connecting spring 69, and the state shown in FIG. Since it is held, it does not rotate to the lock position (position shown in FIG. 5) until the sliding doors 11A and 11B reach the fully closed position. Accordingly, it is possible to prevent the lock mechanism 60 from operating too quickly before the sliding doors 11A and 11B reach the fully closed position. Therefore, the lock mechanism 60 does not break down due to the lock pins 14A and 14B colliding with the engaging members 66A and 66B that have shifted to the lock position.

  In addition, when the moving resistance of the sliding doors 11A and 11B becomes remarkably large, such as when a passenger gets caught during the closing operation of the sliding doors 11A and 11B, the biasing force by the torque limit spring 71 is applied as described later. On the other hand, the carrier 23 rotates, and a predetermined safe operation is performed such as detecting the rotation of the carrier 23 and temporarily stopping the rotation of the electric motor.

  Next, as a result of the sun gear 21 being driven in the direction to close the sliding doors 11A and 11B, the sliding doors 11A and 11B approach the fully closed position, and the lock pins 14A and 14B fixed to the sliding doors 11A and 11B are engaged. It is assumed that the members 66A and 66B abut (see FIG. 3). When the sun gear 21 is driven from this state and the sliding doors 11A and 11B are further moved in the closing direction, the lock pins 14A and 14B urge the engaging members 66A and 66B to move the engaging members 66A and 66B. While rotating in the direction of arrow R1 in FIG. 3, the first engagement portions 67A and 67B enter the recesses.

  When the sliding doors 11A and 11B reach the fully closed position, the engaging members 66A and 66B engage the lock pins 14A and 14B with the first engaging portions 67A and 67B, and the second engaging portions 68A and 68B. The transition to the lock position facing the pins 63d and 63e located at the end of the link mechanism 61 is completed. Thereby, the transition to the linear state of the link mechanism 61 is permitted. Therefore, when the sliding doors 11A and 11B move to the fully closed position, as described above, the link mechanism 61 that is allowed to shift to the linear state, the lock slider that is connected via the guide connecting pin 63c and the slit 33e. 33 can move in the locking direction. As a result, the rotation of the carrier 23 connected to the lock slider 33 via the torque limit spring 71 and the pulling member 70 is allowed.

  On the other hand, after the sliding doors 11A and 11B reach the fully closed position, they cannot move in the closing direction, so that the internal gear 22 connected to the sliding doors 11A and 11B via the rack and pinion mechanism 10 is also prevented from rotating. Is done. Accordingly, the driving force of the sun gear 21 that continues to rotate is now transmitted to the carrier 23, and the carrier 23 rotates counterclockwise in FIG. 2, and the lock slider via the torque limit spring 71 and the traction member 70. 33 moves in the locking direction. As the lock slider 33 moves in the lock direction, the link mechanism shifts from the bent state (the state shown in FIG. 3) to the linear state (the state shown in FIG. 5). In this linear state, since the rotation of the engaging members 66A and 66B is restrained by the pins 63d and 63e of the link mechanism 61, the engaging members 66A and 66B are engaged with the first engaging portions 67A and 67B of the engaging members 66A and 66B. The movement of the lock pins 14A and 14B is prevented. Therefore, the movement of the sliding doors 11A and 11B is locked via the lock pins 14A and 14B. A lock spring 73 is installed on the guide shaft 72 so as to urge the mounting portion 33a of the lock slider 33 in the lock direction, and the lock slider 33 at the lock position is prevented from returning to the lock release position. Thus, the locked state can be maintained more reliably.

  As described above, the lock mechanism 60 is automatically switched to the locked state after the sliding doors 11A and 11B are moved to the fully closed position, as shown in the modifications from FIG. 2 and FIG. 3 to FIG. 4 and FIG. The sliding doors 11A and 11B are locked in a closed 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 11A and 11B is realized, and the drive configuration can be simplified.

  4 and 5, the lock that restricts the rotation of the engaging members 66A and 66B by the link mechanism 61 and the deformation of the link mechanism 61 from the linear state to the bent state are caused by the lock slider 33. It is possible to double lock with the lock to be regulated. Thus, for example, even when the electric motor falls into a power supply failure due to a power failure or failure of the vehicle and the rotation of the output shaft (the sun gear 21) becomes free, the sliding doors 11A and 11B are opened as described above. Is very reliably prevented. This means that even if the vehicle has a power failure or the like, it is possible to prevent the sliding doors 11A and 11B 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 11A and 11B may be performed simply by driving the sun gear 21 in the opposite direction to that at the time of closing by the electric motor. In the locked state (FIGS. 4 and 5), the sliding doors 11A and 11B are locked by the engaging members 66A and 66B, so that the internal gear 22 is prevented from rotating. On the other hand, the movement of the lock slider 33 in the unlocking direction is suppressed only by the urging force of the lock spring 73. That is, when a driving force that is against the urging force of the lock spring 73 is transmitted to the lock slider 33, the lock slider 33 can be moved in the unlocking direction. Therefore, when the sun gear 21 is driven in the opposite direction from the closed state from the locked state, all the driving force of the sun gear 21 is transmitted to the carrier 23, and the lock slider 33 moves toward the unlocking direction via the traction member 70. Move to counter the bias. As the lock slider 33 moves in the unlocking direction, the guide connecting pin 63c of the link mechanism moves from the first hole α to the second hole β along the edge of the slit 33e. Shifts from a straight state to a bent state. As a result, when the engagement between the second engagement portions 68A and 68B of the engagement members 66A and 66B and the pins 63d and 63e located at the end portions of the link mechanism 61 is released, the pair of engagement members 66A and 66B are removed. The engaging members 66A and 66B rotate in the direction R2 in FIG. 5 so that the first engaging portions 67A and 67B face outward (opposite the link mechanism 61) by the tensile elastic force of the connecting spring 69 to be connected. Receive power to move. Accordingly, the lock pins 14A and 14B that are engaged with the second engaging portions 68A and 68B are allowed to move in the opening direction, and the sliding doors 11A and 11B are unlocked.

  On the other hand, the movement of the lock slider 33 in the unlocking direction is restrained by the deformation limit of the lock spring 73 at the position shown in FIG. The movement of the lock slider 33 in the unlocking direction is not limited to being restricted by the deformation limit of the lock spring 73, and may be restricted by contacting the carrier 23 and the base 5 at a predetermined position. In addition, by appropriately setting the length of the guide grooves 80A and 80B into which the guide connection pins 63c of the link mechanism 61 are inserted, the movement of the guide connection pins 63c is restricted by the guide grooves 80A and 80B. The deformation of the link mechanism 61 may be constrained, and thereby the movement of the lock slider 33 may be constrained.

  As a result of restraining the movement of the lock slider 33 in the unlocking direction, the driving force of the sun gear 21 in the planetary gear mechanism 20 is transmitted to the internal gear 22 side this time, so the sliding doors 11A and 11B move the rack-and-pinion mechanism 10 And is driven in the opening direction. At this time, since the engaging members 66A and 66B receive a force (the force in the R2 direction in FIG. 5) for rotating to the unlocking position by the connecting spring 69, the lock pin 14A fixed to the sliding doors 11A and 11B. -The movement of 14B is not restrained.

  It should be noted that the lock slider 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 the lever can be used in an emergency. It is also possible to manually open the sliding doors 11A and 11B after a person operates to move the lock slider in a release state to release the lock. Further, in order to make the configuration simpler, a configuration in which a lever is directly fixed to the lock slider 33 is also possible.

  Next, when the sliding doors 11A and 11B are closed (when the sliding door is moving from the fully open position toward the fully closed position), when the passenger gets between the sliding doors 11A and 11B or when one of the sliding doors gets into the passenger A case where the movement resistance of at least one of the sliding door 11A and the sliding door 11B becomes remarkably large will be described with reference to FIGS. FIG. 8 is a schematic diagram showing the state of the carrier 23 during a normal closing operation. FIG. 9 is a schematic diagram showing the state of the carrier 23 when the sliding resistance of the sliding door increases during the closing operation.

  When the closing operation of the sliding doors 11A and 11B is normally performed, that is, when both the sliding doors 11A and 11B are operating with normal movement resistance without being disturbed from the outside, as described above. The driving force of the sun gear 21 is transmitted to the internal gear 22 side, and the sliding doors 11A and 11B are driven in the closing direction via the rack and pinion mechanism 10. As described above, when the sliding doors 11A and 11B are located at positions other than the fully closed position, the movement of the lock slider 33 is restricted, and the torque limit spring 71 is kept in a state where the movement of the lock slider 33 is restricted. This is because the pulling member 70 connected to the carrier 23 is biased by a predetermined elastic force that can prevent the carrier 23 from rotating when the sliding doors 11A and 11B are normally closed. In the present embodiment, in the state shown in FIG. 8, an elastic force that suppresses the rotation of the carrier 23 acts on the carrier 23 via the traction member 70 so as to balance the movement resistance of the sliding doors 11 </ b> A and 11 </ b> B. That is, when a force greater than the normal movement resistance is applied to the sliding doors 11A and 11B during the closing operation, the carrier 23 can rotate while elastically deforming the torque limit spring 71 while the position of the lock slider 33 is fixed. (To be able to shift to the state shown in FIG. 9).

  Further, a permanent magnet 83 is fixed to the outer peripheral edge portion of the carrier 23, and the detection switch 84 attached to the base 5 side is switched when the permanent magnet 83 moves as the carrier 23 rotates. Has been. Specifically, the detection switch 84 is in the OFF state at the position of the carrier 23 when the sliding doors 11A and 11B are operating with the normal movement resistance, and the carrier 23 is increased as the movement resistance of the sliding doors 11A and 11B increases. Rotates a predetermined amount, the detection switch 84 is turned on (see FIG. 9). And when the said detection switch 84 switches to an ON state, the signal which stops a drive with respect to an electric motor will be transmitted, and the drive of an electric motor will stop.

  As a result, when the sliding doors 11A and 11B are closed, the resistance to movement in the closing direction of the sliding doors increases, for example, when a passenger is caught or when one of the sliding sliding doors collides with a passenger. In this case, the driving of the electric motor is stopped, and the impact force applied to passengers and the like sandwiched between the sliding doors 11A and 11B can be reduced. It should be noted that when the detection switch 84 is turned on (when door pinching / collision is detected), it is not limited to stopping the driving of the electric motor, and control may be performed to reduce the driving output of the electric motor. Good.

  Further, when the sliding doors 11A and 11B are in the fully closed position, the signal for stopping the driving of the electric motor as described above is not transmitted, or the driving of the electric motor is not stopped even if transmitted. Therefore, the drive of the electric motor does not stop during the movement operation of the lock slider 33 in the lock direction described above.

  For example, a lock state detection sensor for detecting that the sliding door is locked is provided, and after the detection signal is transmitted by the detection switch 84, the detection signal of the lock state detection sensor is not transmitted within a predetermined time. In such a case, it is possible to determine that the sliding door has been pinched, collided, etc., and to stop driving the electric motor. Further, for example, when a deceleration sensor that detects the deceleration of the sliding door is used in combination and the moving speed of the sliding door is high during the closing operation, the detection switch 84 detects the rotation of the carrier, thereby pinching and colliding with the door. When the sliding door reaches the closed position and the moving speed of the sliding door slows down, it is possible to detect a pinch / collision by a deceleration sensor.

  As described above, the opening and closing device with a lock according to the present embodiment has a pair of racks 7A and 7B attached to a pair of sliding doors 11A and 11B that can reciprocate with respect to a vehicle housing (wall surface). And a rack and pinion mechanism 10 comprising a pinion 9 meshing with the pair of racks 7A and 7B, an electric motor as an opening / closing drive source of the sliding doors 11A and 11B, and a base 5 fixed to a vehicle housing, A lock mechanism 60 that can lock the pair of sliding doors 11A and 11B in a fully closed position by restraining movement of the lock pins 14A and 14B fixed to the sliding doors in the pair of sliding doors 11A and 11B, and the lock mechanism 60, a lock slider 33 for switching between the locked state and the unlocked state, and the driving force of the electric motor are input. A planetary gear mechanism 20 having a sun gear 21, an internal gear 22 that can output the driving force to the pinion 9, and a carrier 23 that can output the driving force to the lock slider 33. ing. When the sliding doors 11A and 11B are in the fully closed position, the driving force is output from the carrier 23 to the lock slider 33.

  According to this configuration, since the movement of the lock pins 14A and 14B respectively fixed to the sliding doors in the pair of sliding doors 11A and 11B is restrained by the lock mechanism 60, the pair of sliding doors 11A and 11B are independently locked. be able to. Thereby, even when the rack and pinion mechanism 10 breaks down, it is possible to keep the state in which the movements of both sliding doors 11A and 11B are locked. Conversely, when the rack and pinion mechanism 10 is functioning normally, even if the lock of one sliding door 11A (11B) is released due to failure or the like, the one sliding door 11A (11B) Since it is connected to the other sliding door 11B (11A) via the and pinion mechanism 10, if the locking of the other sliding door 11B (11A) is effective, the one sliding door 11A (11B) is maintained in the locked state. be able to. Therefore, the draw type sliding doors 11A and 11B can be locked more reliably.

  In this configuration, 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 slider 33. Therefore, since the structure for power transmission (distribution) from the electric motor is stored in a compact space, the structure can be simplified and a compact locking / closing device with a lock can be provided.

  In addition, since the driving force is distributed from the electric motor by using the planetary gear mechanism 20 instead of the buffer spring as in Patent Document 1, the electric motor is broken due to a failure or the like with the sliding doors 11A and 11B locked in the closed position. Even when the driving force is lost, no force in the unlocking direction is applied to the lock slider 33 or the like, and unintentional unlocking is prevented.

  Further, the opening / closing device with a lock according to the present embodiment has a lock slider 33 that can be switched between a locked state and an unlocked state of the lock mechanism 60 by moving with the driving of the carrier 23. . The lock mechanism 60 prevents the movement of the lock slider 33 when the sliding doors 11A and 11B are other than the fully closed position, and prevents the movement of the lock slider 33 when the sliding doors 11A and 11B are in the fully closed position. It is configured to allow.

  According to this configuration, when the sliding doors 11A and 11B are in a position other than the fully closed position, the lock slider 33 is prevented from moving, so that the locking operation is performed after the sliding doors 11A and 11B have reliably reached the fully closed position. That is, when the sliding doors 11A and 11B are driven in the closing direction, the locking operation is performed at an early timing, and the lock mechanism 60 may be damaged, or the sliding doors 11A and 11B may be restrained before being fully closed. Is prevented.

  Further, in the opening / closing device with a lock according to the present embodiment, the lock mechanism 60 includes a link mechanism 61 that can be deformed into a linear state and a bent state as the lock slider 33 moves, and the sliding door is in a position other than the fully closed position. In some cases, a link holding mechanism 65 that holds the link mechanism 61 in a bent state is provided. When the sliding doors 11A and 11B are in the fully closed position, the lock mechanism 60 is deformed into a linear state so that the lock pins 14A and 14B fixed to the sliding doors 11A and 11B, respectively. Restrain the movement.

  According to this configuration, the movement of the sliding doors 11A and 11B can be locked by setting the link mechanism 61 in a linear state in the fully closed position, and the link mechanism 61 is held in a bent state by the link holding mechanism 65 in other than the fully closed position. Therefore, the locking operation is performed after the sliding doors 11A and 11B reach the fully closed position. Thus, since the lock mechanism 60 is driven using the link mechanism 61, the lock mechanism 60 can be formed compactly and mechanically driven, so that stable driving can be realized.

  Moreover, the opening / closing apparatus with a lock of this embodiment has lock pins 14A and 14B fixed to the sliding doors 11A and 11B so as to extend in the vertical direction. The link holding mechanism 65 is rotatably installed in the vicinity of both ends of the link mechanism 61, and is engaged with the lock pins 14A and 14B in the fully closed position and fully closed. It is configured using a pair of engaging members 66A and 66B having second engaging portions 68A and 68B that engage with the end portions of the link mechanism 61 in a linear state at the position. When the sliding doors 11A and 11B are in positions other than the fully closed position, the engaging members 66A and 66B prevent the movement of the lock slider 33 by preventing the link mechanism 61 from shifting to the linear state. At the same time, when the sliding doors 11A and 11B are moved in the closing direction, the lock pins 14A and 14B are urged so that the end of the link mechanism 61 can be engaged with the second engaging portions 68A and 68B. The lock slider 33 is allowed to move by rotating.

  According to this configuration, in the fully closed position, the engaging members 66A and 66B are engaged with the lock pins 14A and 14B. Then, when the link mechanism 61 extends in a straight line state, the link mechanism 61 is engaged with the end portion of the link mechanism 61 to restrain the rotation. Accordingly, the movement of the lock pins 14A and 14B is restricted in a state where the lock pins 14A and 14B are engaged with the engagement members 66A and 66B. As described above, the engagement members 66A and 66B can prevent the link mechanism 61 from moving to the linear state except at the fully closed position, and can restrain the movement of the lock pins 14A and 14B at the fully closed position. Therefore, the number of parts necessary for forming the lock mechanism 60 can be reduced, and a more compact lock mechanism 60 can be obtained.

  In addition, the opening / closing device with a lock according to the present embodiment includes a lock slider 33 that is slidable in one direction with respect to the lock mechanism 60 and has a curved slit 33e on the bottom surface. The guide connecting pin 63c provided at one connecting point is inserted into the slit 33e and operates in a plane parallel to the bottom surface of the lock slider 33. The guide connecting pin 63c is moved along the slit 33e, whereby the link mechanism 61 is deformed into a straight state and a bent state.

  According to this configuration, the link mechanism 61 is deformed into a straight state and a bent state by moving the lock slider 33 in one direction without interposing another member between the lock slider 33 and the link mechanism 61. Is possible. Therefore, the installation space for the lock mechanism 60 can be reduced.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, it can be implemented with the following modifications.

(1) In the above embodiment, the sun gear 21 is connected to the output shaft of the electric motor, the internal gear 22 is connected to the pinion 9, and the carrier 23 is connected to the traction member. Various variations are conceivable, such as connecting to the pinion 9 and connecting the internal gear 22 to the electric motor.

(2) In the above-described embodiment, the connection between the lock slider and the link mechanism is configured by the slit portion formed on the bottom surface of the lock slider and the link pin of the link mechanism, but is not limited thereto. For example, as shown in FIG. 10 in the unlocked state and in FIG. 11 in the locked state, the connecting pin 33 f with a roller is fixed to the bottom surface of the lock slider 33, and the link in the center of the link mechanism 61 is connected to the lock slider 33. It is also possible to constitute the link 62a ′ having a shape that can be rotated by being urged by the connecting pin 33f with the roller by the movement of. As a result, the movement of the lock slider 33 enables the link mechanism 61 to be deformed between a bent state and a linear state, as described in the present embodiment.

(3) In the above-described embodiment, the carrier and the lock slider are connected with the traction member and the torque limit spring interposed therebetween, but the lock slider may be directly connected to the carrier.

It is a front view which shows the opening / closing door for vehicles which installed the opening / closing apparatus with a lock | rock which concerns on embodiment of this invention. It is a principal part front view which shows the opening / closing apparatus with a lock | rock of a lock release state. It is the schematic which shows the locking mechanism seen from the arrow X direction in FIG. It is a principal part front view which shows the opening / closing apparatus with a lock | rock in a locked state. It is the schematic which shows the locking mechanism seen from the arrow X direction in FIG. It is the fragmentary sectional schematic which shows the locking mechanism and lock slider which were seen from the arrow Y direction in FIG. It is the fragmentary sectional schematic which looked at the locking mechanism of the locked state from the horizontal direction. It is the schematic which shows the state of the carrier at the time of normal closing operation | movement. It is the schematic which shows the state of the carrier at the time of the movement resistance increase of a sliding door at the time of closing operation | movement. It is a figure which shows the lock mechanism and lock slider of the lock release state which concern on the modification of this embodiment. It is a figure which shows the lock mechanism and lock slider of the lock state which concern on the modification of this embodiment.

Explanation of symbols

1 Vehicle door 5 Base (housing)
7A, 7B Rack 9 Pinion 10 Rack and pinion mechanism 11A, 11B Sliding door 14A, 14B Lock pin (lock member)
20 planetary gear mechanism 21 sun gear (input unit)
22 Internal gear (1st output part)
23 Carrier (second output section)
24 Planetary gear 33 Lock slider (switching member)
33e Slit (slit part)
60 Lock mechanism 61 Link mechanism 65 Link holding mechanism 66A, 66B Engagement member 80A, 80B Guide groove

Claims (5)

A rack and pinion mechanism comprising a pair of racks respectively attached to a pair of draw-type sliding doors capable of reciprocating with respect to the housing, and a pinion meshing with the pair of racks;
An actuator as an open / close drive source of the sliding door;
A locking mechanism provided in the housing and capable of locking the pair of sliding doors in a fully closed position by restraining movement of a locking member fixed to each sliding door in the pair of sliding doors;
A switching mechanism for switching between the locked state and the unlocked state of the locking mechanism;
An input unit to which the driving force of the actuator is input; a first output unit capable of outputting the driving force to the pinion; a second output unit capable of outputting the driving force to the switching mechanism; A planetary gear mechanism having
When the sliding door is in the fully closed position, the driving force is output from the second output unit to the switching mechanism. The switching mechanism includes a switching member capable of switching between a locked state and an unlocked state of the lock mechanism by moving with the driving of the second output unit,
The lock mechanism is configured to prevent movement of the switching member when the sliding door is in a position other than the fully closed position, and to permit movement of the switching member when the sliding door is in the fully closed position. The opening / closing device with a lock according to claim 1.   The lock mechanism includes a link mechanism that can be deformed into a linear state and a bent state as the switching member moves, and a link holding mechanism that holds the link mechanism in a bent state when the sliding door is in a position other than the fully closed position. The movement of the lock member fixed to the sliding door is restrained by deforming the link mechanism into a linear state when the sliding door is in the fully closed position. The opening and closing device with a lock. The lock member comprises a lock pin fixed to the sliding door so as to extend in a vertical direction,
The link holding mechanism is rotatably installed in the vicinity of both end portions of the link mechanism, and a first engagement portion that engages with the lock pin in the fully closed position and an end portion of the link mechanism that is linear in the fully closed position A pair of engaging members having a second engaging portion that engages with,
When the sliding door is in a position other than the fully closed position, the engaging member prevents the switching member from moving to a linear state by blocking the movement of the switching mechanism and in the closing direction of the sliding door. The movement of the switching member is permitted by rotating the end of the link mechanism to a position where it can be engaged with the second engaging portion by being urged by the lock pin during the movement of The switchgear with a lock according to claim 3. The switching member is slidable in one direction with respect to the lock mechanism, and includes a lock slider having a curved slit portion on the bottom surface,
The link mechanism operates in a plane parallel to the bottom surface of the lock slider, and a connection pin provided at one connection point is inserted into the slit portion.
5. The opening / closing device with a lock according to claim 4, wherein the link mechanism is deformed into a linear state and a bent state by moving the connecting pin along the slit portion as the lock slider moves. .

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