JP4941208B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device that locks an article conveyed by a conveying device.

  In a transport device that transports a load, for example, a car cart composed of a cage-shaped container in which a plurality of pipes are assembled in a grid and wheels attached to the lower part of the cage-shaped container may be placed on a fork and carried. However, since the car trolley is placed in a state in which the car trolley is freely movable and travels in that state, the car trolley is transported in an unstable state. A transport device has been proposed that transports a load in a state in which the load is fixed by a load fixing and releasing means (see, for example, Patent Document 1).

In the transport apparatus described in Patent Document 1, the baggage fixing / releasing means operates an opening / closing claw mechanism by operating an opening / closing claw mechanism having a pair of claw portions and a handle turning lever as an operation portion to perform an opening / closing operation. Claw opening / closing drive means to be performed. In the luggage fixing and releasing means described in Patent Document 1, when the handle turning lever is turned, the claw opening / closing driving means is operated, and the pair of claw levers constituting the opening / closing claw mechanism is turned. The claw portion of the claw lever shifts between a state in which the bar-shaped portion of the luggage is clamped and a state in which it is released.
Utility Model Registration No. 3093419

  However, in the transport device described in Patent Document 1, when holding the bar-shaped portion of the load, the bar-shaped portion is brought into contact with a pair of opened holding portions (claw portions), and the handle is rotated in that state. The rod-shaped portion of the luggage is clamped by operating the moving lever and rotating the claw lever in the direction in which the clamping part is closed. On the other hand, in order to release the lock of the baggage by the baggage fixing and releasing means, the gripping portion is opened by operating the handle turning lever and turning the claw lever in the direction in which the pinching portion is opened. Therefore, in the luggage fixing / releasing means described in Patent Document 1, it is necessary to rotate the pair of claw levers when locking the luggage and when releasing the luggage lock. Has to be performed twice, and there is a problem that the number of operations of the handle turning lever increases and is troublesome.

  The present invention has been made paying attention to such problems, and an object of the present invention is to enable a pair of holding portions to be shifted from an unlocked state to a locked state while the lock lever is kept in the locked position. Thus, an object of the present invention is to provide a locking device that can lock an article conveyed by the conveying device without operating a lock lever.

In order to achieve the above-mentioned object, the invention according to claim 1 is supported by a base portion installed in the transfer device so as to be rotatable, and clamps the rod-shaped portion of the article when in a locked posture. 1 support member and 2nd support member, the lock position which can hold | maintain the said 1st support member and the said 2nd support member with the said lock attitude | position, and clamping of the said rod-shaped part by the said 1st support member and the said 2nd support member And a lock lever for performing an operation of switching to a lock release position that is in a state where the product can be released, wherein the first support member is always disposed in the lock posture, and the second support member includes A recess in which the rod-shaped portion can be disposed is provided, and the second support member is configured to rotate the first support during the rotation from the receiving posture allowing the rod-shaped portion of the article to be pressed against the recess. Element In the lock device that contacts and rotates the first support member to move to the lock position, the lock lever is disposed at the lock position, and the second support member is moved from the receiving position to the lock position. The locking device is further provided in the first support member and engageable with the second support member, and is operated from the locked position to the unlocked position. And the first support member and the second support member are moved to a position where the pinching of the rod-like portion can be released, and the second support member is rotated from the receiving posture to the locked posture in the state where it is located at the lock position. A lock lever that allows movement; a holding means that holds the lock lever in the locked position; and a connecting link portion that is rotatably supported with respect to the base portion. And an operating link member that connects the lock lever and the connecting link member, and synchronizes the connecting link member when the lock lever is operated to the unlocked position; and the connecting link member; A link member that connects the first support member and interlocks the first support member when the connecting link member rotates, and the second support member is restricted from rotating. A posture holding means for holding the member in the receiving posture; and the link member and the operating link member when the second support member moves from the receiving posture to the locking posture and the connecting link member rotates. And an urging means for urging the first support member to be in the locked posture, and the posture holding means is configured such that the second support member is the lower support member. A rotation restricting means for restricting the rotation to a direction opposite to the direction toward the hook posture, and the second support member provided in the second support member and the second support member positioned in the receiving posture. At least a locked portion that faces the first support member, and a locking portion that is provided on the first support member and locks the locked portion when the second support member is in the receiving posture. When the second support member rotates from the receiving posture to the locking posture, the locked portion releases the locking to the locked portion by pushing the locking portion, and the 2 When the support member is rotated to the lock posture, the engagement portion engages with the second support member and the lock lever is positioned at the lock position, so that the second support member is locked. With the gist of being held in posture That.

  In the present invention, in a state where the article is not locked, the first support member is always arranged in the locked posture by being urged by the urging means, and the second support member is arranged in the receiving posture. And in the 2nd support member located in an acceptance posture, it is controlled by the rotation control means that rotation to the opposite side to the direction which goes to a lock posture, and a locking part locks a locked part. Thus, since the rotation toward the lock posture is restricted, the receiving posture is maintained. Therefore, even if a force smaller than the force with which the bar-shaped portion of the article is pressed against the second support member is applied, the second support member can be prevented from rotating to the locked posture. Therefore, it is possible to avoid an unexpected situation in which the rod-shaped portion of the article cannot be pressed against the second support member when the operator tries to lock the article, and the lock operation for the article can be performed without any trouble.

  Further, in order to sandwich the bar-shaped portion of the article when the transport device transports the article, the second support member is rotated by pressing the bar-shaped portion of the article against the concave portion of the second support member in the receiving posture. Let When the second support member rotates, the locked portion pushes the locking portion, so that the first support member rotates and the locking with respect to the locked portion is released. Further, when the second support member rotates in the direction toward the lock posture, the second support member pushes the first support member, whereby the first support member rotates and the second support member enters the lock posture. By moving, the first support member and the second support member cooperate to sandwich the bar-shaped portion of the article. Here, the first support member rotates when the second support member moves to the locked posture, and the link member moves in conjunction with the rotation of the first support member. Since the link member is not interlocked with the link member, the operation link member does not interlock with the movement of the link member. Therefore, the second support member can be changed from the receiving posture to the locked posture while the lock lever is in the locked position.

  When the second support member changes to the locked posture, the engaging portion and the second support member engage with each other while the rod-shaped portion of the article is sandwiched between the first support member portion and the second support member, and the second support member is engaged. The rotation of the member is restricted. Therefore, the lock on the bar-shaped portion of the article by the first support member and the second support member is not released until the lock lever is operated and moved to the lock release position.

  Further, when releasing the locked state of the article, the connecting link member is rotated via the operating link member by operating the lock lever from the lock position to the lock release position. And a 1st support member is interlocked with rotation of a connection link member via a link member, and engagement with an engaging part and a 2nd support member is cancelled | released when a 1st support member rotates. After that, if the rod-shaped portion of the article is moved in a direction away from the first support member and the second support member, the sandwiched state of the rod-shaped portion is released and the second support member rotates, and the locked portion and The locking portion is returned to the original position and locked, and the second support member is held in the receiving posture.

According to a second aspect of the present invention, in the first aspect of the present invention, the concave portion includes the rotation center of the first support member and the first in a state where the second support member is disposed in the receiving posture. than the distance between the second coupling portion of the link member which connects the virtual line as the previous SL first support member connecting the rotation center of the support member, the distance from the connecting portion is provided on a long position, The locking portion protrudes toward the second support member, and is a locking protrusion provided at a position where the distance from the connecting portion is shorter than the distance between the virtual line and the connecting portion, The locked portion protrudes toward the first support member in a state where the second support member is positioned in the receiving posture, and is locked between the locking protrusion and the virtual line. The rotation restricting means is provided on the second support member and (2) A locked recess provided so that the support member faces the first support member in the receiving posture, and the locking protrusion extended so that a part is accommodated in the locked recess. The locked recess is locked to the locking protrusion when the second support member tries to rotate in the direction opposite to the direction from the receiving posture toward the locking posture. This is the gist.

  In the present invention, the locked projection is locked by the locking projection while the second support member is in the receiving posture, so that the rotation in the direction toward the locking posture is restricted. In addition, when the second support member is in the receiving posture, the wall of the locked recess comes into contact with the locking protrusion even if it tries to rotate in the direction opposite to the direction toward the locking posture. The rotation is restricted. Therefore, even when the conveying device moves and vibration is applied to the lock device, the second support member can be prevented from being displaced from the receiving posture, and the first portion is not pressed until the bar-shaped portion of the article is pressed against the recess of the second support member. 2 The support member can be securely held in the receiving posture.

According to a third aspect of the present invention, in the first aspect of the present invention, the concave portion includes the rotation center of the first support member and the first in a state where the second support member is disposed in the receiving posture. than the distance between the second coupling portion of the link member which connects the virtual line as the previous SL first support member connecting the rotation center of the support member, the distance from the connecting portion is provided on a long position, The locking portion protrudes toward the second support member, and is a locking protrusion provided at a position where the distance from the connecting portion is shorter than the distance between the virtual line and the connecting portion, The locked portion protrudes toward the first support member in a state where the second support member is positioned in the receiving posture, and is locked between the locking protrusion and the virtual line. The second support disposed in the receiving posture. Provided at a position of the base portion serving as a wood and contactable, and summarized in that the direction toward the locking position is a stopper receiving position for restricting the rotation of the second support member to the opposite side .

In the present invention, the locked projection is locked by the locking projection while the second support member is in the receiving posture, so that the rotation in the direction toward the locking posture is restricted. Further, in the state where the second support member is in the receiving posture, the rotation is restricted by coming into contact with the stopper for the receiving posture even if the second supporting member tries to rotate in the direction opposite to the direction toward the locking posture. Therefore, even when vibration is applied to the lock device when the transport device moves, the second support member can be prevented from shifting from the receiving posture until the rod-shaped portion of the article is pressed against the concave portion of the second support member. The second support member can be securely held in the receiving posture.

  According to the present invention, the pair of holding portions can be shifted from the unlocked state to the locked state while the lock lever is in the locked position, so that the article conveyed by the conveying device without the operation of the lock lever. Can be locked.

  Hereinafter, an embodiment in which the present invention is embodied in a lock device mounted on a low lift truck as a transport device will be described with reference to FIGS. In the present embodiment, the forward direction of the low lift truck is described as the front, and the front, rear, upper, lower, left, and right are defined based on the forward direction. In the case of the locking device, the front, rear, upper, lower, left, and right are defined corresponding to each direction of the low lift truck based on the state of being attached to the low lift truck.

  As shown in FIG. 1A, the low lift truck 11 is provided with a deck 13 on which a driver stands on the rear side of the vehicle body 12, and a battery storage portion 14 and a battery storage device on the front side of the vehicle body 12. A fork 15 extending forward from the lower portion of the portion 14 is supported so as to be movable up and down. A plurality of rear wheels 16 are provided at the lower portion of the vehicle body 12, and a plurality of front wheels (not shown) are provided at the lower portion on the tip side of the fork 15.

  The fork 15 is configured to be insertable below the base portion 19 of the car cart 18 as an article, and is configured to be placed by being lifted while being inserted below the base portion 19. The car carriage 18 is composed of a cage-shaped container 21 configured by assembling a plurality of pipes 20 as rod-shaped portions in a lattice shape, and a wheel 17 attached to the lower part of the cage-shaped container 21. The base portion 19 constitutes the bottom portion of the cage-shaped container 21. And the car trolley | bogie 18 is comprised so that it may accommodate so that a load may be enclosed with the cage | basket | car shape container 21, and it may move, if it is pushed by the operator.

  The vehicle body 12 is provided with an operation control device 23 for operating forward and backward movement of the low lift truck 11 and transfer by the fork 15 at the upper part thereof. As shown in FIG. 1B, a pair of brackets 24 are provided at the lower left and right sides of the battery storage portion 14, and a support frame formed in an inverted U shape by bending a pipe-like member at two locations. Both end portions of 25 are attached to the battery storage portion 14 via a pair of brackets 24.

  A lock device 27 that locks the car carriage 18 is fixed to the support frame 25 on a pipe base portion 26 that extends in the left-right direction of the low lift truck 11 and exists between two bent portions.

  As shown in FIG. 2, the locking device 27 includes a plate-like first base portion 29 that is directly fixed to the pipe pedestal portion 26 by a plurality of bolts 28. The center portion of the first base portion 29 projects to the front side, and a bracket 24 (see FIG. 4) formed in a cross-sectional channel shape is joined to the portion projecting to the front side. A plate-like second base portion 31 is fixed on the bracket 24 by a plurality of bolts 30.

  The second base portion 31 has a plate-like shape with respect to the central portion in the left-right direction (width direction), and a connecting link member formed in a planar view hook shape by bending the first end portion 32a on the rear side. 32 is rotatably supported by a bolt 33. Here, the connection link member 32 is provided with a bearing hole (not shown) through which the shaft portion of the bolt 33 can be inserted, and the connection link member 32 is rotatably supported by inserting the shaft portion of the bolt 33 into the bearing hole. Has been. The shaft portion of the bolt 33 is screwed into a screw hole (not shown) provided in the second base portion 31. In addition, the bolt described below shall support the object member with the same structure so that rotation is possible unless it mentions especially.

  A pair of first support plates 34A and 34B as first support members and second support plates 35A and 35B as second support members are provided on both left and right sides of the second base portion 31 with the connecting link member 32 interposed therebetween. Each is attached to the second base portion 31. The first support plate 34A and the second support plate 35A are rotatably supported by bolts 36A and 37A and are provided adjacent to each other. Similarly, the first support plate 34B and the second support plate 35B are rotatably supported by bolts 36B and 37B and are provided adjacent to each other. The first support plate 34A and the second support plate 35A in one set and the first support plate 34B and the second support plate 35B in the other set are spaced apart from each other by the pipe 20 extending vertically. Is the same distance as.

  The first support plate 34 </ b> A is provided with a first recess 38 </ b> A on the tip side (front side) along the peripheral surface of the pipe 20 in the car carriage 18. The first support plate 34A is in a locked posture with the first recess 38A facing the second support plate 35A.

  The first support plate 34A is provided with a step portion 39A as an engaging portion at the end of the first recess 38A, and the side portion on the rear side of the step portion 39A protrudes toward the second support plate 35A. 40A of latching protrusions as a part are provided. The stepped portion 39A is a stepped surface 76A that extends away from the second support plate 35A from the distal end side (front side) to the proximal end side (rear side) of the first support plate 34A (see FIG. 3A). )have. 40 A of latching protrusions are the 1st side surface 41A extended in parallel with the left-right direction in the state in which the 1st support plate 34A is arrange | positioned in the lock | rock attitude | position, and the 2nd side surface 42A extended diagonally. And have. Specifically, the first side surface 41A is a bolt that rotatably supports the rotation center P1 and the second support plate 35A that exist at the center of the bolt 36A that rotatably supports the first support plate 34A. It extends in parallel with a virtual line Q1 connecting the rotation center P2 existing at the center of 37A.

  Here, on the first support plate 34A, a first locking plate 43A is erected on the base end side (rear side) near the second support plate 35A. At a position spaced from the first locking plate 43A toward the second support plate 35A, the base end portion is fastened to the second base portion 31 by the bolt 44A and the distal end portion is bent toward the first locking plate 43A side. A second locking plate 45A is provided. A first end 47A of a support plate spring member 46A as an urging means is attached to the first locking plate 43A, and a second end 48A of the support plate spring member 46A is attached to the second locking plate 45A. Is attached. The support plate spring member 46A is a tension spring that biases the first support plate 34A in a counterclockwise direction in FIG. 2 so as to maintain the lock posture.

  The second support plate 35A adjacent to the first support plate 34A is provided with a second recess 49A as a recess made of a curved surface having a length equal to half of the entire circumference of the pipe 20 on the front end side (front side). In the state where the second support plate 35A is arranged in the receiving posture, the tip end portion 50A is located slightly closer to the first support plate 34A and the second recess 49A is opened obliquely forward, and the pipe 20 of the car carriage 18 is opened. Can be pressed against the second recess 49A. As shown in FIG. 3A, the second support plate 35A is a distance between the rotation center P2 existing at the center of the bolt 37A and the tip 50A on the first support plate 34A side of the second support plate 35A. T1 is configured to be longer than the shortest distance T2 from the rotation center P2 to the step portion 39A of the first support plate 34A. Further, the second support plate 35A is in the receiving posture, and the distance T1 from the rotation center P2 to the tip 50A on the first support plate 34A side of the second support plate 35A is the first support from the rotation center P2. The plate 34A is configured to be shorter than the longest distance T3 to the stepped portion 39A. The second support plate 35A is configured to rotate on a plane parallel to the rotation surface of the connecting link member 32, and the second recess 49A of the second support plate 35A faces the first support plate 34A side. When the posture is changed to the locked posture, the second support plate 35A has the tip portion 50A on the first support plate 34A side engaged with the stepped portion 39A.

  The second support plate 35A is provided with a locked projection 51A as a locked portion that protrudes toward the first support plate 34A and faces the first support plate 34A on the left side. Yes. In a state in which the second support plate 35A is arranged in the receiving posture, the locked protrusion 51A has the lock protrusion 40A and the rotation center P1 of the first support plate 34A to the rotation center of the second support plate 35A. It is located between the imaginary line Q1 connecting up to P2, and the tip thereof is in contact with the first side surface 41A of the locking projection 40A. In the second support plate 35A, a recessed portion 52A that accommodates the distal end portion of the locking protrusion 40A is formed at a portion facing the first support plate 34A on the rear side of the locked protrusion 51A. Has been.

  The locked recess 52A does not hinder the locking protrusion 40A from being moved by the locked protrusion 51A as the second support plate 35A rotates from the receiving position to the locking position. It is formed into a shape. Here, the rotation restricting means for restricting the rotation of the second support plate 35A to the side opposite to the direction toward the locking posture is constituted by the locking protrusion 40A and the locked recess 52A, The posture holding means includes a locking protrusion 40A, a locked protrusion 51A, and a locked recess 52A. Then, the second support plate 35A has a posture so as not to deviate from the receiving posture beyond a range where no trouble occurs when the pipe 20 is pressed against the second recess 49A and the second support plate 35A is rotated to the locked posture. The rotation is restricted by the holding means.

  As shown in FIG. 2, the first support plate 34A, the second support plate 35A, the spring member 62, and the second locking plate 45A are arranged symmetrically with the connecting link member 32 interposed therebetween. The other first support plate 34B, second support plate 35B, support plate spring member 46B as urging means, and second locking plate 45B have the same configuration as each member described above.

  On the other hand, the first base part 29 provided at a position one step lower than the second base part 31 has a plate-like lock lever bracket 55 in a posture that stands on the right side and rises with respect to the rear side. Are joined. The lock lever bracket 55 has a connecting portion 56 extending rearwardly at a substantially central portion in the longitudinal direction. As shown in FIG. 4, a dog-shaped lock lever 57 is attached to the connecting portion 56 in a state of being rotatably supported by a bolt 58.

  The lock lever 57 includes a connecting plate 59 that is directly attached to the tip of the connecting portion 56, and an operating rod 60 that extends from the first end 59a of the connecting plate 59 and curves toward the rear side in the middle. ing. The operating rod 60 is provided with a grip at the tip.

  The connecting plate 59 has a locking portion 61 extending toward the rear side. The locking portion 61 is formed with an endless locking groove capable of locking the first end portion of the spring member 62 on the distal end side thereof.

  On the other hand, the lock lever bracket 55 is provided with a locking plate 63 that extends toward the rear side at a position spaced leftward from the locking portion 61 and that has a tip portion bent upward. The locking plate 63 is formed with a locking groove that can lock the second end of the spring member 62 at its tip.

  Then, the first end of the spring member 62 is locked in the locking groove of the locking portion 61 and the second end of the spring member 62 is locked in the locking groove of the locking plate 63. The spring member 62 is stretched between the locking portion 61 and the locking plate 63. The spring member 62 is a tension spring and urges the locking portion 61 toward the locking plate 63. Therefore, when no external force is applied to the lock lever 57, the connecting plate 59 is in contact with a rectangular parallelepiped lock position stopper 64 protruding rearward from the lock lever bracket 55. The lock position stopper 64 is fastened to the lock lever bracket 55 by a bolt 65. The holding means for holding the lock lever in the lock position includes a lock position stopper 64, a locking portion 61, a locking plate 63, and a spring member 62.

  A rectangular parallelepiped lock release position stopper 66 protruding rearward from the lock lever bracket 55 is provided below the lock position stopper 64 with the lock lever 57 interposed therebetween. The lock release position stopper 66 is fastened to the lock lever bracket 55 by a bolt 72 and abuts against the lock lever 57 operated downward against the spring member 62, so that the lock lever 57 moves downward from the lock release position. It functions to regulate what you do.

  As shown in FIG. 2, the second end portion 59b of the connecting plate 59 (the base end portion of the lock lever 57) and the first end portion 32a of the connecting link member 32 are first and second at both ends, respectively. The joint portions 67 and 68 are connected via a substantially rod-shaped actuating link member 69 provided.

  The first joint portion 67 is fitted with a shaft portion of a bolt (not shown) penetrating the second end portion 59 b of the connecting plate 59 in a state where there is play in a receiving hole (not shown) of the first joint portion 67. The end portion 59b is connected. Therefore, the first joint portion 67 allows the connection plate 59 to rotate in the vertical direction and restricts the operation link member 69 from rotating in the front-rear direction with the first joint portion 67 as a fulcrum.

  The 2nd joint part 68 is connected with the 1st end part 32a of the connection link member 32 via the volt | bolt 71 (refer FIG. 4) penetrated by the long hole 70 as an interlocking avoidance part. The second joint portion 68 allows the connecting link member 32 to rotate in the front-rear direction and restricts the operation link member 69 from rotating in the vertical direction with the second joint portion 68 as a fulcrum.

  3B, the long hole 70 is formed in the first end portion 32a of the connection link member 32, and the rotation center P3 of the connection link member 32 existing at the center of the bolt 33 and the first hole 32a. The center line extends so that the center line is positioned on an imaginary circle whose radius is a line S2 connecting the centers of the two joint portions 68. The length R of the long hole 70 indicates that the second joint portion 68 moves relative to the long hole 70 when the first support plate 34A and the second support plate 35A change from the receiving posture to the locked posture. It is set to an allowable length.

  Further, as shown in FIG. 2, the second end portion 32b of the connecting link member 32 and the proximal end side of the first support plate 34A are substantially rod-shaped, and the first and second joint portions 73A, 73A, It is connected via a first link member 75A provided with 74A.

The first joint portion 73A of the first link member 75A is connected to the second end portion 32b of the connection link member 32 via a bolt (not shown) that penetrates the second end portion 32b of the connection link member 32. The first joint portion 73A allows the connection link member 32 to rotate in the front-rear direction. Further, the second joint portion 74A as a connecting portion of the first link member 75A is connected to the base end side of the first support plate 34A via a bolt (not shown) penetrating the base end side of the first support plate 34A. . The second joint portion 74A allows the connection link member 32 to rotate in the front-rear direction. Here, as shown in FIG. 3A, the second recesses 49A and 49B have a distance from the second joint portion 74A of the first link member 75A to the second recesses 49A and 49B of the first link member 75A. The second joint 74A is provided at a position longer than the distance from the imaginary line Q1 connecting the rotation center P1 of the first support plate 34A and the rotation center P2 of the second support plate 35A. Further, the locking projections 40A and 40B are such that the distance from the second joint portion 74A of the first link member 75A to the locking projections 40A and 40B is from the second joint portion 74A of the first link member 75A to the first support plate. It is provided at a position shorter than the distance to the imaginary line Q1 connecting the rotation center P1 of 34A and the rotation center P2 of the second support plate 35A.

  The first support plate 34B disposed symmetrically with respect to the first support plate 34A (left side in FIG. 2) with the connecting link member 32 interposed therebetween is a second member having the same shape as the first link member 75A. It is connected via a link member 75B. In the second link member 75B, the first joint portion 73B is connected to the connection link member 32, and the second joint portion 74B is connected to the proximal end side of the first support plate 34B. As shown in FIG. 3B, the distance S1 between the first joint portion 73A of the first link member 75A and the rotation center P3 of the connecting link member 32 is the first joint of the second link member 75B. It is equal to the distance S3 between the portion 73B and the rotation center P3 existing at the center of the bolt 33.

Next, the operation of the lock device 27 configured as described above will be described.
In a state where the lock device 27 installed in the low lift truck 11 does not lock the car carriage 18, the first support plates 34A and 34B are always locked by being urged by the support plate spring members 46A and 46B. Arranged in a posture, the second support plates 35A, 35B are arranged in a receiving posture. Here, when the low lift truck 11 moves, vibration is applied to the second support plates 35A and 35B, and if the second support plates 35A and 35B rotate unexpectedly and deviate from the receiving posture, the pipe 20 is moved to the second position. Even if pressed against the recesses 49A and 49B, the second support plates 35A and 35B cannot be rotated toward the locking posture, which causes an obstacle to the locking operation. However, in the second support plates 35A and 35B arranged in the receiving posture, the inner wall surfaces 54A and 54B of the locked recesses 52A and 52B are engaged even if the second support plates 35A and 35B try to rotate in the opposite direction to the direction toward the locking posture. The rotation of the second support plates 35A and 35B is restricted because they come into contact with the second side surfaces 42A and 42B of the stop protrusions 40A and 40B. Further, even if the second support plates 35A and 35B try to rotate in the direction toward the locking posture, the tips of the locked projections 51A and 51B abut on the first side surfaces 41A and 41B of the locking projections 40A and 40B. Therefore, the rotation of the second support plates 35A and 35B is restricted. Therefore, when the operator tries to lock the car carriage 18, the unexpected situation that the pipe 20 of the car carriage 18 cannot be pressed against the second recesses 49A and 49B of the second support plates 35A and 35B is avoided. It is possible to perform the locking operation on the car cart 18 without any trouble.

  When the car cart 18 is transported by the low lift truck 11, the car cart 18 is placed on the fork 15 so that the car cart 18 does not lose its balance or move unexpectedly during the transport. The movement of the car carriage 18 is restricted and locked by the lock device 27. When the car cart 18 is locked by the locking device 27, first, the car cart 18 has a separation with the lock lever 57 positioned at the lock position and allowing the second support plates 35A and 35B to rotate. The pipes 20 are simultaneously pressed against the second recesses 49A and 49B of the second support plates 35A and 35B so that the line connecting the two pipes 20 is parallel to the left-right direction. And 2nd support plate 35A, 35B rotates so that 2nd recessed part 49A, 49B of 2nd support plate 35A, 35B may face 1st support plate 34A, 34B side. Then, as shown in FIG. 5, the urging forces of the support plate spring members 46A and 46B against the first support plates 34A and 34B by the locked projections 51A and 51B pressing the locking projections 40A and 40B. The force which overcomes is applied, and the first support plates 34A and 34B rotate so as to incline toward the second support plates 35A and 35B. Then, the locked protrusions 51A and 51B and the locking protrusions 40A and 40B are separated from each other, and then the tip portions 50A and 50B of the second support plates 35A and 35B are stepped portions 39A of the first support plates 34A and 34B. , 39B and pushing the first support plates 34A, 34B, a force that overcomes the biasing force of the support plate spring members 46A, 46B is applied to the first support plates 34A, 34B. Then, the first support plates 34A and 34B are rotated so as to be inclined toward the second support plates 35A and 35B, so that the shortest distance from the rotation center P2 of the second support plates 35A and 35B to the step portion 39A is long. Thus, the tip portions 50A, 50B of the second support plates 35A, 35B get over the tops of the step portions 39A, 39B. When the tip portions 50A, 50B of the second support plates 35A, 35B get over the tops of the step portions 39A, 39B, the first support plates are biased by the urging forces of the support plate spring members 46A, 46B against the first support plates 34A, 34B. 34A and 34B rotate to return to the locked posture, and the second support plates 35A and 35B also have the locked posture.

  Here, when the second support plates 35A and 35B change from the receiving posture to the locked posture, the connecting link member 32 rotates via the first link members 75A and 75B, but the second joint of the operating link member 69 is used. The portion 68 is only displaced relative to the long hole 70, and the second joint portion 68 does not substantially move. That is, even if the connecting link member 32 rotates, the operating link member 69 does not move in conjunction with each other, and the operating link member 69 and the connecting link member 32 are in an unlinked state. Therefore, the second support plates 35A and 35B change from the receiving posture to the locked posture without operating the lock lever 57, and as shown in FIG. 6, two sets of the first concave portions 38A and 38B and the second concave portions 49A and 49B. Thus, the two pipes 20 of the car cart 18 are sandwiched.

  When the first support plates 34A and 34B and the second support plates 35A and 35B are changed to the locked posture, the first recesses 38A and 38B and the second recesses 49A and 49B face each other, and the first support plate 34A. , 34B are engaged with the tip portions 50A, 50B on the first support plate 34A, 34B side of the second support plates 35A, 35B, and the rotation of the second support plates 35A, 35B is restricted. Is done. Therefore, when the low lift truck 11 moves backward with the car cart 18 placed thereon, the movement of the car cart 18 is restricted. That is, since the rotation of the second support plates 35A and 35B is restricted by the step portions 39A and 39B, the second support plates 35A and 35B do not rotate and change to the receiving posture. Therefore, the car carriage 18 can be locked by the first support plates 34A and 34B and the second support plates 35A and 35B without any trouble even when the low lift truck 11 performs the transport operation.

  Further, when unlocking the car carriage 18, first, the lock lever 57 is turned to the unlock position (in the direction of the arrow shown in FIG. 4) to move the lock lever 57 from the lock position to the unlock position. The operating link member 69 is moved to the right side. Then, as shown in FIG. 7, the connection link member 32 rotates in conjunction with the movement of the actuation link member 69, and the first and second link members 75 </ b> A, 75 </ b> B interlock with the rotation of the connection link member 32. Move symmetrically with respect to the rotation center P3 on the same plane. When the first and second link members 75A and 75B move, the two first support plates 34A and 34B are inclined from the locked state (the state shown in FIG. 6) to the second support plates 35A and 35B. Rotate. As a result, the shortest distance from the rotation center P2 of the second support plates 35A and 35B to the step portions 39A and 39B becomes longer, and the tip portions 50A and 50B of the second support plates 35A and 35B reach the tops of the step portions 39A and 39B. By getting over and moving to the front end side of the first support plates 34A, 34B, the engagement between the step portions 39A, 39B and the front end portions 50A, 50B of the second support plates 35A, 35B is released. After that, when the car carriage 18 locked by the two sets of the first support plates 34A and 34B and the second support plates 35A and 35B is pulled out from the lock device 27, the pipe 20 has the first recesses 38A and 38B and the second recesses 49A. , 49B, and the holding state of the pipe 20 is released. Then, the second support plates 35A and 35B return to the receiving posture, and the locked protrusion 51A is locked to the locking protrusion 40A.

In this embodiment, the following effects can be obtained.
(1) The lock device 27 includes a first support plate 34A provided with a first recess 38A on the distal end side, and a second support plate 35A provided with a second recess 49A on the distal end side, and the first support plate 34A. Is connected to the connecting link member 32 via the first link member 75A. The connection link member 32 is connected to the lock lever 57 via the operation link member 69, and the connection link member 32 has a length as an interlock avoidance portion that brings the operation link member 69 and the link member into an unlinked state. A hole 70 is provided. Therefore, regardless of the operation of the lock lever 57, the second support plate 35A is locked from the receiving posture by pressing the pipe 20 of the car carriage 18 against the second recess 49A while the lock lever 57 is kept at the lock position. Can change to posture. And the pipe 20 of the car trolley | bogie 18 can be clamped by the 1st recessed part 38A and the 2nd recessed part 49A by making the 1st support plate 34A and the 2nd support plate 35A into a lock attitude | position. Therefore, it is not necessary to operate the lock lever 57 when locking the car cart 18, and the work of locking the car cart 18 can be simplified accordingly.

  (2) The first support plate 34A is provided with a step portion 39A as an engaging portion at the end of the first recess 38A. When the first support plate 34A and the second support plate 35A are in the locked posture, the lock lever 57 is positioned at the lock position, and the step portion 39A and the tip end portion 50A of the second support plate 35A are engaged. Match. Therefore, the first support plate 34A and the second support plate 35A can be held in a locked posture in which the pipe 20 of the car carriage 18 is sandwiched by the first recess 38A and the second recess 49A.

  (3) The lock lever 57 is attached in a state where it is rotatably supported by the bolt 58. The lock lever 57 and the connection link member 32 are connected via an operation link member 69. Then, by rotating the lock lever 57 from the lock position to the lock release position, the engagement between the stepped portions 39A and 39B and the tip portions 50A and 50B of the second support plates 35A and 35B can be released. When the car carriage 18 is pulled out, the pipe 20 can be detached from the first recesses 38A and 38B and the second recesses 49A and 49B.

  (4) The second support plates 35A and 35B are provided with locked projections 51A and 51B that face the first support plates 34A and 34B in a state where the second support plates 35A and 35B are in the receiving posture. It has been. The first support plates 34A and 34B are provided with locking projections 40A and 40B for locking the locked projections 51A and 51B in a state where the second support plates 35A and 35B are in the receiving posture. Even if the second support plates 35A and 35B try to rotate in the direction toward the locking posture when the pipe 20 is not pressed against the second recesses 49A and 49B of the second support plates 35A and 35B, The rotation can be restricted by locking the locked protrusions 51A and 51B by the portions 40A and 40B. Accordingly, the second support plates 35A and 35B are held in the receiving posture, and the second recesses 49A and 49B are covered by the first support plates 34A and 34B when the operator tries to press the pipe 20 of the car carriage 18. It is possible to avoid the problem that the car cannot be locked and the car cart 18 cannot be locked.

  (5) The second support plates 35A and 35B are provided with locked recesses 52A and 52B so as to face the first support plates 34A and 34B. The locking protrusions 40A and 40B are extended so that the tip ends are accommodated in the locked recesses 52A and 52B. Then, when the second support plates 35A and 35B are in the receiving posture, the wall surfaces of the locked recesses 52A and 52B are locked to the locking protrusions 40A and 40A even if the second support plates 35A and 35B are rotated in the direction opposite to the direction toward the locking posture. The rotation is restricted by contacting with the second side surfaces 42A and 42B of 40B. Therefore, it can suppress that 2nd support plate 35A, 35B moves to the opposite side to the direction which faces a lock attitude | position, and 2nd support plate 35A, 35B shifts | deviates from an acceptance attitude | position.

  (6) Two sets of first support plates 34 </ b> A and 34 </ b> B and second support plates 35 </ b> A and 35 </ b> B are arranged on the left and right sides of the second base portion 31 so as to sandwich the connecting link member 32. Therefore, the two pipes 20 of the car carriage 18 can be sandwiched and locked by the two sets of the first support plates 34A and 34B and the second support plates 35A and 35B, respectively. Therefore, the car cart 18 can be reliably locked by the lock device 27 as compared with the case where only one pipe 20 is sandwiched.

  (7) The two first and second support plates 35A and 35B are connected to the connecting link member 32 by the first and second link members 75A and 75B, respectively, and the first and second link members 75A and 75B. Are interlocked with the rotation of the connecting link member 32 and arranged symmetrically with the rotation center P3 interposed therebetween. Then, the operating link member 69 is moved by operating the lock lever 57 to move to the unlocked position, and the first and second link members 75A and 75B are simultaneously moved via the connecting link member 32. Therefore, in the two sets of the first support plates 34A and 34B and the second support plates 35A and 35B, the engagement between the step portions 39A and 39B and the tip portions 50A and 50B of the second support plates 35A and 35B can be simultaneously released. The car cart 18 can be easily unlocked.

  (8) The support plate spring members 46A and 46B are attached to the first locking plates 43A and 43B whose first ends 47A and 47B are erected from the upper surfaces of the first support plates 34A and 34B, and Two end portions 48 </ b> A and 48 </ b> B are attached to second locking plates 45 </ b> A and 45 </ b> B provided on the second base portion 31. Accordingly, since the support plate spring members 46A and 46B can directly apply a biasing force to the first support plates 34A and 34B, compared to a case where the biasing force is indirectly applied to the first support plates 34A and 34B. Thus, it is possible to accurately apply the urging force necessary to hold the first support plates 34A and 34B in the locked posture.

The embodiment is not limited to the above, and may be embodied as follows, for example.
○ Instead of directly biasing the first support plates 34A, 34B by the support plate spring members 46A, 46B as the biasing means, biasing means for biasing via the connecting link member is provided, and the biasing means The first support plate may be biased so as to be in a locked posture. For example, in FIG. 2, a spring member is disposed on the right side of the connecting link member 32, the first end of the spring member is attached to the second end of the connecting link member 32, and the second end is connected to the second base portion. If the second end portion of the connecting link member 32 is biased so as to be inclined toward the first supporting plate by being attached to the standing locking plate, the first supporting plate is connected to the connecting link member 32 and the first link. It is biased so as to be indirectly received through the member 75A.

  ○ Instead of arranging two sets of the first support plates 34A and 34B and the second support plates 35A and 35B so that the connecting link member 32 is sandwiched therebetween, only one set of the first support plate and the second support plate is provided. Good. Moreover, while providing only one set of a 1st support plate and a 2nd support plate, the position spaced apart from the 1st support plate and the 2nd support plate in the left-right direction by the space | interval between the pipes 20 in the lower part of the 2nd base part 31. Alternatively, a block-shaped support made of resin may be provided. And the recessed part which has a concave surface along the surrounding surface of the pipe 20 is formed in a support body, and it is made to clamp by pushing a pipe part into the recessed part. If comprised in this way, since two pipe parts can be pinched | interposed by a 1st support plate, a 2nd support plate, and a support body, since the car trolley 18 is locked in one place, the car trolley 18 rotates. Can be suppressed.

  ○ Since the interlock avoiding portion only needs to be able to bring the link member and the link member for operation into the non-interlocking state when the first support plates 34A and 34B and the second support plates 35A and 35B change from the receiving posture to the locked posture, In addition, an interlock avoidance unit that avoids the connection link member from rotating in conjunction with the movement of the second link members 75A and 75B may be provided. For example, the rotation center P3 of the connection link member 32 and the first joint portions 73A and 73B are connected to the connection link member where the first joint portions 73A and 73B of the first link member 75A and the second link member 75B are connected. A long hole having a center line located on a virtual circle having a radius connecting a line connecting the two is formed. Then, the first and second link members are inserted when the second support plates 35A and 35B are changed from the receiving posture to the locked posture by inserting the bolt into the elongated hole and then connecting to the first joint portions 73A and 73B. Even if 75A and 75B move, the connecting link member 32 does not rotate, so that the operating link member is prevented from interlocking.

  ○ Instead of providing a long hole as the interlock avoidance portion, the interlock avoidance portion may be configured by a long groove. For example, a long groove whose center line is located on a virtual circle having a radius connecting the rotation center P3 of the connecting link member and the first joint portions 73A and 73B is formed, and the first end of the connecting rod-like member is formed in the long groove. If the second end of the connecting rod-like member is inserted and connected to the second joint portion of the operating link member, the long groove is in an unlinked state between the first and second link members and the operating link member. It functions as an interlock avoidance unit.

  (Circle) You may change the shape of the 1st recessed part formed in the front end side of 1st support plate 34A, 34B. For example, a first recess having a shape that follows the outer shape of the square pipe portion and can be engaged with the corner portion of the square pipe may be formed so as to sandwich the square pipe portion having a rectangular cross section. Moreover, you may make the 1st recessed part the shape which can respond to both a round pipe and a square pipe. In this case, for example, the shape of the first recess may be a shape having a part of the outer shape of the square pipe and a part of the outer shape of the round pipe.

  (Circle) You may change the shape of the 2nd recessed part formed in the front end side of 2nd support plate 35A, 35B. For example, a second recess having a shape that follows the outer shape of the square pipe portion and can be engaged with the corner portion of the square pipe may be formed so that the square pipe having a rectangular cross section can be sandwiched. Moreover, you may make the 2nd recessed part the shape which can respond to both a round pipe and a square pipe. In this case, for example, the shape of the second recess may be a shape having a part of the outer shape of the square pipe and a part of the outer shape of the round pipe.

  A first auxiliary support plate may be provided on the top surface on the front end side of the first support plate, and a second auxiliary support plate may be provided on the top surface on the front end side of the second support plate. And while providing the 1st recessed part which followed the outline of the rod-shaped part of the articles | goods currently set as clamping object accurately in a 1st auxiliary | assistant support plate, it followed the outline of the rod-shaped part of articles | goods set as clamping object accurately. The second recess is provided in the second auxiliary support plate. If comprised in this way, the locking device which can pinch | interpose the rod-shaped part of articles | goods reliably can be manufactured, without raising cost significantly.

  ○ By providing a locked recess as a rotation restricting means on the second support plate, it is placed in the receiving posture instead of restricting the second support plate from rotating in the opposite direction to the lock posture. In this state, the rotation may be restricted by a stopper for receiving posture as a rotation restricting means that comes into contact with the second support plate. For example, as shown in FIG. 8A, a receiving posture stopper 77 formed in a square plate shape is provided between the second support plate 35A and the second locking plate 45A in the second base portion 31, and The second support plate 35 </ b> A arranged in the receiving posture is erected at a position where it can come into contact with the base end. The distance between the side on the left side of the contact portion 78 of the second support plate 35A that is in contact with the receiving posture stopper 77 and the rotation center P2 of the second support plate 35A is the contact amount of the second support plate 35A. It is formed to be shorter than the distance T4 between the portion 78 and the rotation center P2 of the second support plate 35A. If comprised in this way, the stopper 77 for acceptance attitude | positions will rotate to the opposite side (clockwise direction in Fig.8 (a)) of the 2nd support plate 35A arrange | positioned in an acceptance attitude | position toward the lock attitude | position. This can be restricted and the second support plate 35A can be held in the receiving posture. Therefore, when the car carriage 18 is to be locked, it is possible to avoid a problem that the pipe 20 cannot be pressed against the second concave portion 49A because the second support plate 35A is not in the receiving posture. it can. Further, the receiving posture stopper 77 having the same shape as the receiving posture stopper 77 is provided at a position symmetrical to the receiving posture stopper 77 with the connecting link member 32 interposed therebetween, and the second support plate 35B is locked. You may restrict | rotate to the opposite side to the direction which faces a attitude | position.

  O Instead of providing a locking projection as a locking portion, a locking recess for locking the locked projection may be provided on the first support plate. For example, as shown in FIG. 8B, the locked protrusion 79 is extended and the extended locked protrusion 79 is accommodated in a state where the second support plate 35A is in the receiving posture. A locking recess 80 is formed. Then, in a state where the second support plate 35 </ b> A is disposed in the receiving posture, the locked protrusion 79 is in contact with the inner wall surface 80 a on the rear side of the locking recess 80, so that the rotation to the locked posture is restricted. . In addition, when the second support plate 35A is disposed in the receiving posture, the tip of the locked protrusion 79 is in contact with the inner wall surface 80a of the locking recess 80 even if the second support plate 35A is rotated in the direction opposite to the direction toward the locking posture. The rotation is regulated by contact. Therefore, the second support plate 35A is held in the receiving posture unless the pipe 20 of the car carriage 18 is pressed. The first support plate 34 </ b> A may be provided with a locking recess having the same structure on the first support plate 34 </ b> B provided at a symmetrical position with the connecting link member 32 interposed therebetween. In addition, in the state where the second support plate 35A is arranged in the receiving posture, there is a gap between the locked projection 79 and the front inner wall surface 80a, so that the second support plate 35A faces the lock posture. It is slightly allowed to rotate in the direction opposite to the direction. However, the shape of the locking recess 80 is set so that the second support plate 35A does not rotate and deviate from the receiving posture so as to cause trouble when the pipe 20 is pressed. Further, the first support plate 34B provided at a symmetrical position with the connecting link member 32 interposed therebetween may be provided with a locking recess having the same shape.

  ○ The locked protrusion may be omitted. Then, instead of omitting the locked protrusion, a locked step portion is provided on the second support plate, and a stopper for receiving posture as a rotation restricting means is provided on the second base portion to receive the second support plate. You may comprise so that it may hold | maintain with an attitude | position. In this case, for example, the locking protrusions 40A and 40B provided on the first support plates 34A and 34B are extended, and the second support plates 35A and 35B are arranged in the receiving posture, and By configuring the step surface to engage with the first side surfaces 41A and 41B of the locking projections 40A and 40B, the second support plates 35A and 35B are restricted from rotating toward the locking posture. In addition, the second support plates 35A and 35B can be rotated in the opposite direction to the direction toward the lock posture by configuring the receiving posture stopper to contact the second support plates 35A and 35B arranged in the receiving posture. To regulate. If comprised in this way, a 2nd support plate can be hold | maintained in an acceptance attitude | position by the to-be-latched step part, the stopper for acceptance attitude | positions, and the latching protrusions 40A and 40B.

  ○ Instead of providing the locked recess and the receiving posture stopper as the rotation restricting means, a winding spring that applies a biasing force in the rotation direction to the second support plates 35A and 35B may be provided as the rotation restricting means. . For example, the winding spring is mounted so as to be wound around the shaft portions of the bolts 37A and 37B that support the second support plates 35A and 35B, and the first end of the winding spring is attached to the second base portion and the second end portion. Are attached to the second support plates 35A and 35B, and the second support plates 35A and 35B are rotatably supported by the bolts 37A and 37B. Then, when the second support plates 35A and 35B arranged in the receiving posture rotate to the opposite side to the direction toward the lock posture, the winding springs attach the second support plates 35A and 35B in the direction toward the lock posture. If the force is applied, it is possible to restrict the second support plates 35A and 35B from rotating in the direction opposite to the direction toward the lock posture.

  In the case where the transport device transports two car carts of a half size to the car cart 18 in the embodiment, the two car carts may be locked by one locking device. In this case, a pair of the first support plate 34A and the second support plate 35A sandwiches the pipe portion of one car cart, and the pair of the first support plate 34B and the second support plate 35B sandwiches the pipe of the other car cart. The part may be clamped. In this case, a block-shaped support body made of resin is provided at the lower part of the second base part 31, two recesses that can be engaged with the pipe 20 are formed in the support body, and the pipe parts are respectively pushed into the recesses to be sandwiched. If it makes it, it can suppress that two car trolley | bogies rotate.

  ○ What the locking device locks is not limited to the car car pipe. For example, when the conveying device is placed on a fork to convey an article formed by bundling a plurality of plastic rod members, a single rod member is sandwiched between the first recess and the second recess. It may be locked and transported.

  ○ The transport device with the locking device is not limited to the low lift truck. For example, a lock device may be mounted on a forklift as a transport device. In this case, even if the forklift does not perform the tilting operation, it is possible to restrict the movement of the article placed on the fork of the forklift during transportation. Further, if a lock device is mounted on the forklift, it is possible to prevent the load placed on the fork from falling over. Moreover, you may mount in the towing vehicle which pulls and conveys a car trolley | bogie etc. In this case, if the locking device is attached to the rear portion of the towing vehicle and the first recess formed in the first support member and the second recess formed in the second support member are arranged to face the rear side, the towing vehicle is The pipe part of the towed car cart can be pinched and locked.

(A) is a side view of a low lift truck, (b) is a rear view of a low lift truck. The schematic plan view of the locking device in this embodiment. (A) is an enlarged plan view of a 1st support plate and a 2nd support plate, (b) is a partial enlarged plan view which shows the link member connected with the connection link member and the connection link member. The side view which shows the support structure of a lock lever and a lock lever. The top view which shows the state in the middle of the locking device locking a pipe in this embodiment. The top view which shows the state which the locking device locked the pipe in this embodiment. The top view which shows the state which the locking device released | released the lock of the pipe in this embodiment. (A) And (b) is an enlarged plan view of the 1st support plate and 2nd support plate in another embodiment.

Explanation of symbols

  P1 ... Rotation center of the first support plate, P2 ... Rotation center of the second support plate, Q1 ... Virtual line, 11 ... Low lift truck as a transport device, 18 ... Cage cart as an article, 20 ... As a rod-shaped portion , 27... Locking device, 29... First base portion as base portion, 31... Second base portion as base portion, 32... Linking link member, 34 A, 34 B. 35A, 35B: second support plate as a second support member, 39A, 39B: stepped portion as an engaging portion, 40A, 40B: locking protrusion as a locking portion, 46A, 46B: biasing means Spring plate members 51A, 51B: locked protrusions as locked portions, 52A, 52B: locked recesses as rotation restricting means, 57: lock levers, 69: link members for operation, 70 ... Long hole as interlocking avoidance part 75A ... First link member as a link member, 75B ... Second link member as a link member, 77 ... Stopper for receiving posture as rotation restricting means, 79 ... Locked protrusion as locked portion, 80 ... A locking recess as a locking portion.

Claims (3)

A first support member and a second support member, which are rotatably supported with respect to a base portion installed in the transport device, and sandwich a bar-shaped portion of an article when in a locked posture;
A lock position in which the first support member and the second support member can be held in the lock posture, and a lock release position in a state in which the holding of the rod-shaped portion by the first support member and the second support member can be released. And a lock lever for switching to
The first support member is always arranged in the locking posture,
The second support member is provided with a recess in which the bar-like portion of the article can be arranged,
The second support member abuts on the first support member while rotating from the receiving posture allowing the rod-shaped portion of the article to be pressed against the concave portion to the locked posture, thereby causing the first support member to move. In the locking device that rotates and moves to the locking posture,
The lock lever allows the second support member to rotate from the receiving posture to the locking posture in a state of being disposed at the locking position;
The locking device is further provided on the first support member and engageable with the second support member;
Holding means for holding the lock lever in the locked position;
A connecting link member rotatably supported with respect to the base part;
An operation link member that connects the lock lever and the connection link member, and interlocks the connection link member in synchronization when the lock lever is operated to the unlock position;
A link member that connects the connection link member and the first support member and interlocks the first support member when the connection link member rotates;
Posture holding means for restricting rotation of the second support member and holding the second support member in the receiving posture;
When the second support member moves from the accepting posture to the locked posture and the connecting link member rotates , an interlock avoiding portion that makes the link member and the link member for operation non-interlocking,
Biasing means for biasing the first support member so as to be in the locked posture;
The posture holding means is provided on the second support member and the second support member while restricting the second support member from rotating to the side opposite to the direction toward the lock posture. Is provided in the first support member while the second support member is in the receiving posture and is locked in the receiving posture. At least a locking portion for locking the portion,
When the second support member rotates from the receiving posture to the locking posture, the locked portion releases the locking to the locked portion by pressing the locking portion,
In a state where the second support member is rotated to the lock posture, the engagement portion engages with the second support member and the lock lever is positioned at the lock position, so that the second support member is The locking device is held in the locking posture. The recess, the imaginary line before Symbol first support to the second support member connecting the center of rotation of said the rotation center of the first support member in a state of being arranged in the receiving position the second support member The distance from the connecting portion is longer than the distance between the connecting portion of the link member connected to the member,
The locking portion protrudes toward the second support member, and is a locking protrusion provided at a position where the distance from the connecting portion is shorter than the distance between the virtual line and the connecting portion,
The locked portion protrudes toward the first support member in a state where the second support member is positioned in the receiving posture, and is locked between the locking protrusion and the virtual line. A stop projection,
The rotation restricting means is provided on the second support member, and a part of the locked recess provided so that the second support member faces the first support member in the receiving posture. The locking projection is extended so as to be accommodated in the locked recess,
The locked recess is locked to the locking protrusion when the second support member tries to rotate in a direction opposite to the direction from the receiving posture toward the locking posture. Item 2. The apparatus according to Item 1. The recess, the imaginary line before Symbol first support to the second support member connecting the center of rotation of said the rotation center of the first support member in a state of being arranged in the receiving position the second support member The distance from the connecting portion is longer than the distance between the connecting portion of the link member connected to the member,
The locking portion protrudes toward the second support member, and is a locking protrusion provided at a position where the distance from the connecting portion is shorter than the distance between the virtual line and the connecting portion,
The locked portion protrudes toward the first support member in a state where the second support member is positioned in the receiving posture, and is locked between the locking protrusion and the virtual line. A stop projection,
The rotation restricting means is provided at a position of the base portion that can come into contact with the second support member arranged in the receiving posture, and the second support in a direction opposite to the direction toward the locking posture. The locking device according to claim 1, wherein the locking device is a receiving posture stopper for restricting rotation of the member.

Images