JP5071252B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device that locks a car cart.

  In the transport device, for example, a car cart provided with a plurality of pipe portions extending in the vertical direction on a wheeled cargo platform portion may be carried on a fork portion. However, in the transport device, when the car cart is placed on the fork portion in a movable state and travels in that state, the car cart is transported in an unstable state. There has been proposed a transport device that transports the car cart in a state of being fixed by a fixing means (see, for example, Patent Document 1). The fixing means in the transport device described in Patent Literature 1 operates the 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. In this transport device, the handle turning lever is turned to operate the claw opening / closing drive means, and the pair of claw levers constituting the opening / closing claw mechanism are turned to be placed on the fork portion. The car cart is locked by holding the bar-like portion extending in the vertical direction of the car cart between the claws of the pair of claw levers.

In addition, a cargo handling vehicle has been proposed in which a crosspiece constituting a lower end portion of a car cart is pressed and fixed from above and below by a fork and a pressing member to prevent the car cart from being detached from the fork (for example, Patent Document 2). reference.).
Utility Model Registration No. 3093419 JP 2005-145364 A

  However, in the transport device described in Patent Document 1, for example, when the car cart loaded with full load is to be locked, the pawl levers as a pair of latches have their claws in the housing portion of the car cart. Then, the pair of latches (claw levers) are rotated to pinch the rod-shaped portion. For this reason, in this transport device, when the car cart containing the load is to be locked, the claw portions of the pair of latches (claw levers) interfere with the load housed in the car cart housing portion and damage the load. There was a fear.

  In addition, the portion of the car trolley that is pressed and fixed in the cargo handling vehicle described in Patent Document 2 is a crosspiece that forms the lower end of the car cart, and in the cargo handling vehicle described in Patent Document 2, a pipe that extends in the vertical direction of the car cart. It does not consider the problems that occur when fixing the part.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lock device that suppresses interference of a latch with a load housed in a car cart when the car cart is locked. It is in.

  In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a base portion installed in a transporting device capable of transporting two trolleys at the same time in a state of being arranged side by side, A first latch that can be moved to an open position that allows the pipe portion extending in the vertical direction of one of the car carriages to be pressed against the tip portion, and a holding position that locks the pipe portion, The base part is pivotally attached, and a transition is made between an open position for allowing the pipe part extending in the vertical direction of the other car carriage to be pressed against the tip part, and a holding position for locking the pipe part. A second latch that is capable of rotating on the base portion, and engages with the first latch when the first latch is in the open position and the holding position; Regulating rotation A first engagement member, a first urging means for urging the first engagement member so as to be able to engage with the first latch, and a pivotally provided on the base portion; A second engagement member that engages with the second latch when the second latch is in the open position and the holding position and restricts the rotation of the second latch; and Second urging means for urging the second latch so as to be engageable with the second latch; and when operated, the first engagement member is moved against the urging force of the first urging means. The first engagement member and the first latch are disengaged from each other by rotating and the second engagement member is rotated against the urging force of the second urging means to rotate the second engagement member. A lock release operation member for releasing engagement between the second engagement member and the second latch, and the first latch and the second latch. Is arranged such that the distance between the rotation centers of each other is shorter than the distance between the pipe portions of the two car carriages, and the first latch and the second latch in the open position are: When the pipe portion is pressed, it rotates to rotate the first engaging member and the second engaging member, and the tip end portion wraps around from the region between the pipe portions of the two car carts. The gist is to switch to the holding position.

  In the present invention, when the first latch and the second latch are to be moved from the open position to the holding position, the pipe portions of the two car carriages are pressed against the distal ends of the first latch and the second latch, respectively. And while the 1st latch and the 2nd latch move to the holding position from the open position, the 1st latch and the 2nd latch rotate so that the front-end | tip part may wrap around from the area | region between the pipe parts of two cage trucks. . The first latch and the second latch respectively lock the pipe portion and engage with the first engagement member and the second engagement member to be in the holding position. Therefore, when the first latch and the second latch shift from the open position to the holding position and lock the car cart, the leading ends of the first latch and the second latch interfere with the load accommodated in the car cart. Can be suppressed.

  When the unlocking operation member is operated, the first engagement member and the second engagement member rotate against the urging force of the first urging means and the second urging means, and the first engagement The engagement between the member and the first latch and the engagement between the second engagement member and the second latch are released. After that, if the pipe parts of the two car carts are moved in the direction away from the first latch and the second latch, the locking of the pipe parts of the two car carts is released, and the first latch and the second latch are opened. Return to position.

  According to a second aspect of the invention, in the first aspect of the invention, the first latch and the second latch are provided vertically, and the first engagement member and the second engagement member are The gist is that the first latch and the second latch are provided above and below and are arranged in a partially overlapping state.

  In this invention, since the distance between the rotation centers of the first latch and the second latch in the left-right direction can be reduced, the distance between the two car carts is reduced when the two car carts are conveyed by the conveying device. In this state, the movement of the pipe portions of the two car carts can be locked by the first latch and the second latch.

  According to a third aspect of the present invention, in the second aspect of the present invention, the connecting link member provided rotatably in the vertical direction, the connecting link member, and the first engaging member. A first link member to be connected, a second link member for connecting the connection link member and the second engagement member, and an operation link member for connecting the connection link member and the unlocking operation member. The summary is provided.

  In this invention, when the unlocking operation member is operated, the connecting link member is rotated via the operating link member. Then, since the first engagement member and the second engagement member rotate in synchronization with the rotation of the connecting link member, the engagement between the first engagement member and the first latch and the second engagement member And the second latch can be released.

  According to a fourth aspect of the present invention, in the first to third aspects of the present invention, a support member is attached to the base portion at a position facing each of the car carts. When the first latch and the second latch are in the holding position, the protrusion that sandwiches the pipe portion in cooperation with the first latch and the second latch, and the interference prevention for preventing interference with the car carriage And a notch for use.

  In this invention, when the first latch and the second latch move to the holding position, the car cart can be locked more securely by holding the pipe portion between the first latch and the second latch and the protrusion. it can. In addition, since the support member is formed with a notch for preventing interference, when the pipe part of the car cart is clamped, it is avoided that the car cart part other than the pipe part to be clamped interferes with the support member. it can.

  ADVANTAGE OF THE INVENTION According to this invention, when locking a car trolley | bogie, it can suppress that a latch interferes with the load accommodated in the car trolley | bogie.

  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. 1 (a), the vehicle body 2 of the low lift truck 1 is provided with an operation control device 4 for operating the low lift truck 1 to move forward and backward and transfer by a fork 3. The vehicle body 2 is provided with a deck 5 on which a driver stands on the rear side, and a battery storage portion 6 and a fork 3 extending forward from the lower portion of the battery storage portion 6 can be moved up and down. It is supported by. The battery housing 6 is provided with a pair of brackets 7 (only the right bracket 7 is shown) at the lower left and right sides, and a support formed in an inverted U shape by bending a pipe-like member at two locations. Both ends of the frame 8 are attached to the battery housing 6 via a pair of brackets 7. A plurality of rear wheels 9 are provided in the lower part of the vehicle body 2, and a plurality of front wheels (not shown) are provided in the lower part on the tip side of the fork 3.

  Here, as shown in FIG.1 (b), the fork 3 is comprised so that mounting is possible in the state in which the two car trolley | bogies 10A and 10B were arranged in parallel. The car cart 10A is provided with three fence bodies 12A and 13A along the side of the wheel loading platform portion 11A formed in a substantially rectangular shape in plan view. The three fence bodies 12A, 13A are composed of a pair of side face fence bodies 12A arranged so as to face each other and a back side fence body 13A arranged between the pair of side face fence bodies 12A. Has been. The fence bodies 12A and 13A are formed with pipe frames 14A and 15A having thick outer frames, respectively, and a plurality of reinforcing pipes 16A and 17A extending in the vertical direction are provided inside the pipe frames 14A and 15A in a state of being arranged in parallel. It has been. A pair of pipe portions 18A, 19A extending in the vertical direction of the pipe frames 14A, 15A are reinforcing plates 20A, 21A extending perpendicularly to the plurality of reinforcing pipes 16A, 17A (FIG. 1A). Reference). The three fence bodies 12A and 13A are integrated by connecting the pipe portion 18A of the pipe frame 14A of the fence body 12A and the pipe portion 19A of the pipe frame 15A of the fence body 13A by the connecting tool 22A. In the car trolley 10A, a space capable of storing luggage is defined by the three fence bodies 12A and 13A. And the car trolley 10B is the same structure as the car trolley 10A, and is equipped with a wheel carrier 11B, rails 12B and 13B, pipe frames 14B and 15B, reinforcing pipes 16B and 17B, pipes 18B and 19B, and reinforcing plates 20B and 21B. The connecting tool 22B has the same configuration as the wheel carrier 11A, the rails 12A and 13A, the pipe frames 14A and 15A, the reinforcing pipes 16A and 17A, the pipe parts 18A and 19A, the reinforcing plates 20A and 21A, and the connecting tool 22A. is there. Then, the two car carriages 10A and 10B placed on the fork 3 are arranged in a state in which the rear side fence bodies 13A and 13B are adjacent to each other, and the pipe frames 15A and 15B of the fence bodies 13A and 13B. The portions 19A and 19B are locked by the locking device 30 attached to the pipe pedestal portion 8a of the support frame 8.

  As shown in FIG. 2, the first base plate 31 as the base portion of the locking device 30 is fixed to the pipe base portion 8a by fixing means (not shown). The first base plate 31 is provided with a connecting link member 40 by a bracket 32 so as to be rotatable. The connecting link member 40 has a plate shape, and one end portion 40a is curved to form a hook shape. The first base plate 31 is provided with a pair of brackets 33 that are L-shaped and symmetrical on the left and right sides. On the pair of brackets 33, a second base plate 34 as a base portion is attached in a horizontal state. A first engagement member 50A is provided on the upper surface of the second base plate 34 on the right side of the center line L in the left-right direction, and the second base plate 34 is second on the left side of the center line L in the left-right direction. An engaging member 50B is provided. Further, the second base plate 34 is formed such that a central portion in the left-right direction extends forward from the front side edge 31 a of the first base plate 31. A base end portion 61A of the first latch 60A is pivotally attached to the upper surface of the extension portion 34a by a bolt 62A, and a base end portion 61B of the second latch 60B is attached to the bottom surface of the extension portion 34a. (Refer to FIG. 3).

  As shown in FIG. 3, the first engaging member 50A is rotatably attached to the second base plate 34 by a bolt 51A. The first engaging member 50A is provided with a stepped portion 52A on the side portion on the first latch 60A side, and an engaging protrusion 53A that protrudes toward the first latch 60A is provided on the side portion. ing. The first engagement member 50A is attached to the first end 71A of the first spring member 70A as the first urging means on the opposite side of the engagement protrusion 53A with respect to the rotation center O1. 54A is provided. Note that the rotation center O1 of the first engagement member 50A coincides with the center of the bolt 51A. Further, the second end portion 72 </ b> A of the first spring member 70 </ b> A is locked to a locking portion (not shown) provided on the first base plate 31. The first spring member 70A is a tension spring that biases the first engagement member 50A in the clockwise direction in FIG.

  On the other hand, the first latch 60A includes a latch main body 63A and a resin plate 64A attached to the top end side of the upper surface of the latch main body 63A. The plate 64A is provided with a first concave portion 66A that constitutes the tip portion 65A of the first latch 60A and has a curved surface having a length equal to half of the entire circumference of the pipe portions 19A and 19B. In the state where the first latch 60A is disposed at the open position, the first recess 66A is positioned on the right side of the center line L, and the first recess 66A is opened obliquely forward to the right. The pipe portion 19A can be pressed. Further, the first latch 60A is provided with a first engaged protrusion 68A that protrudes toward the first engagement member 50A on a side portion 67A that faces the first engagement member 50A when in the open position. ing. When the first latch 60A is in the open position, the tip of the first engaged protrusion 68A is in contact with the engaging protrusion 53A. The first latch 60A is provided with a second engaged protrusion 69A. As shown in FIG. 7, the second engaged protrusion 69A is formed in a shape that can be engaged with the step surface 56A of the step portion 52A. As shown in FIG. 2, on the lower side of the first latch 60A, the first engagement member 50A, and the first spring member 70A, the second latch 60B and the second engagement member 50B with the second base plate 34 interposed therebetween. A second spring member 70B as a second urging means is disposed. The second latch 60B, the second engagement member 50B, and the second spring member 70B have the same configuration as the first latch 60A, the first engagement member 50A, and the first spring member 70A, respectively.

  As shown in FIG. 3, when the first latch 60A and the second latch 60B are in the open position, most of the first recess 66A and the second recess 66B are located in front of the extending portion 34a. . The first latch 60A and the second latch 60B when in the open position have their first recesses in a state in which two car carriages 10A and 10B are arranged side by side on the fork 3 (see FIG. 1B). 66A and the 2nd recessed part 66B are located so that the area | region S between the pipe parts 19A and 19B of the two cage | basket | cars 10A and 10B may be opposed. The region S between the pipe portions 19A and 19B of the two car carts 10A and 10B is the two car carts 10A and 10B on the forks 3 (see FIG. 1B) and the fence bodies 13A and 13B on the back side of each other. Means a region sandwiched between one pipe portion 19A and the pipe portion 19B. Further, the first latch 60A and the second latch 60B are spaced apart from each other in the left-right direction at the rotation centers P1, P2. Further, the first latch 60A and the second latch 60B are arranged in a state where a part thereof overlaps and is separated in the vertical direction. The rotation centers P1 and P2 coincide with the centers of the bolts 62A and 62B, respectively. The distance T in the left-right direction between the rotation centers P1 and P2 is arranged to be shorter than the distance K between the pipe portions 19A and 19B of the two car carriages 10A and 10B placed on the fork 3. ing. When the first latch 60A and the second latch 60B are to be switched from the open position to the holding position, the first recess 66A and the second recess 66B rotate in a direction away from each other, and the tip portions 65A and 65B have two. It goes around from the area S between the pipe parts 19A, 19B of the two car carts 10A, 10B.

  On the other hand, as shown in FIG. 4 (a), a plate-like lock lever bracket 80 is joined to the first base plate 31 so as to be positioned on the right side while standing with respect to the rear side. Yes. The lock lever bracket 80 has a connecting portion 81 extending rearward at a substantially central portion in the longitudinal direction. Then, as shown in FIG. 4B, a lock lever 90 as a lock release operation member curved in a U shape is attached to the connecting portion 81 in a state where the lock lever 90 is rotatably supported by a bolt 91. Yes. The lock lever 90 is provided with a locking portion 92 extending from the base end portion 90a toward the rear side. The first end portion 93a of the spring member 93 is locked to the locking portion 92 at the tip side.

  Further, the lock lever bracket 80 is provided with a locking portion 82 that extends toward the rear side on the left side of the locking portion 92. The second end portion 93 b of the spring member 93 is locked to the locking portion 82. The spring member 93 is a tension spring that biases the lock lever 90 toward the lock position stopper 83. Therefore, in a state where no external force is applied to the lock lever 90, the base end portion 90a of the lock lever 90 is in contact with a rectangular parallelepiped lock position stopper 83 protruding rearward from the lock lever bracket 80.

  Below the lock position stopper 83, there is provided a rectangular parallelepiped lock release position stopper 84 projecting rearward from the lock lever bracket 80 with the lock lever 90 interposed therebetween. The lock release position stopper 84 abuts against the lock lever 90 operated downward against the spring member 93.

  As shown in FIG. 4 (a), the base end portion 90a of the lock lever 90 and the connecting link member 40 are substantially rod-shaped operating link members having first and second joint portions 100a and 100b provided at both ends. 100 are connected. The first joint portion 100a is connected to the base end portion 90a of the lock lever 90 so as to allow the base end portion 90a of the lock lever 90 to rotate.

  The second joint portion 100b is connected to the connection link member 40 via a bolt 42 (see FIG. 2) inserted through the long hole 41. The second joint portion 100b is connected to the connection link member 40 so as to allow the connection link member 40 to rotate. The length of the long hole 41 allows the second joint portion 100b to move relative to the long hole 41 when the first latch 60A and the second latch 60B change from the open position to the holding position. It is set to length.

  Further, as shown in FIG. 2, the connecting link member 40 and the rear end 55A (see FIG. 3) of the first engagement member 50A are substantially rod-shaped and have first and second joints at both ends. The first and second link members 110 provided with the portions 110a and 110b are connected to each other. The first link member 110 is disposed between the first engagement member 50A and the connection link member 40 in a state parallel to the first engagement member 50A. The first joint portion 110a of the first link member 110 is connected to the connection link member 40, and the second joint portion 110b of the first link member 110 is connected to the end portion 55A of the first engagement member 50A. The second engagement member 50B and the connection link member 40 are connected via the second link member 120 in a posture parallel to the second engagement member 50B. The second link member 120 is a member having the same configuration as the first link member 110. And the movement of the 1st link member 110 and the 2nd link member 120 becomes symmetrical on the basis of rotation center O2 (refer to Drawing 4 (a)) of connecting link member 40.

  As shown in FIG. 5, a cover 130 is attached to the first base plate 31 as a square box-shaped base portion. The cover 130 is configured to cover the first and second engaging members 50A and 50B and the first and second link members 110 and 120 provided on the second base plate 34 shown in FIG. The front side wall portion 130a of the cover 130 faces the mounted car carts 10A and 10B (see FIGS. 1A and 1B), and the front side wall portion 130a has a first latch 60A and a second latch 60B. Two support members 140 made of resin are fixed so as to be positioned on both upper and lower sides with the gap therebetween.

  As shown in FIG. 5, each support member 140 is formed in a substantially block shape, and both ends are fixed by bolts 141. The support member 140 is provided with a protrusion 142 that protrudes forward when it is fixed to the cover 130. The projecting portion 142 is formed so that one side surface 142a thereof is along the peripheral surfaces of the pipe portions 19A and 19B. The protrusion 142 is a portion of the pipe portions 19A and 19B that protrudes from the first and second recesses 66A and 66B of the first and second latches 60A and 60B when the first and second latches 60A and 60B move to the holding position. It is comprised so that it may engage with. Further, the protrusion 142 is formed with a notch 142b for preventing interference on the opposite side to the one side 142a to prevent interference with the car carts 10A and 10B. The notch 142b for preventing interference constitutes a flat surface 142d extending in parallel with the other side surface 142c of the protrusion 142 in parallel in the left-right direction. The flat surface 142d is formed to face the car carriages 10A and 10B (see FIGS. 1A and 1B) placed on the fork 3 (see FIGS. 1A and 1B). On the opposite side of the flat surface 142d with the protrusion 142 interposed therebetween, a protrusion 144 is provided so as to be aligned with the protrusion 142 with a space sufficient to accommodate the pipe portions 19A and 19B. The side surface 144a of the protrusion 144 is continuous with the side surface 142a of the protrusion 142, and is formed along the peripheral surfaces of the pipe portions 19A and 19B. Note that a bolt 141 is inserted into the protrusion 144.

Next, the operation of the lock device 30 configured as described above will be described.
In a state where the low lift truck 1 is not transporting the car carriages 10A and 10B (see FIG. 3), the engagement protrusions 53A and 53B of the first and second engagement members 50A and 50B of the lock device 30 are the first The first latching protrusion 68A of each of the second latches 60A and 60B is engaged, and the first and second latches 60A and 60B are restricted from rotating in the direction toward the holding position. 2 The latches 60A and 60B are held in the open position.

  Then, from this state, when two car carts 10A, 10B loaded with a full load W are simultaneously transported by the low lift truck 1, as shown in FIG. 1 (b), the two car carts 10A, 10B, 10B are arranged side by side. Then, by operating the operation control device 4 and inserting the pair of forks 3 below the wheeled platform parts 11A and 11B of the two carriages 10A and 10B, respectively, the two fork trucks 10A and 10B are lifted. 10B is placed on the fork 3.

  Thereafter, the two car carts 10A and 10B are pushed toward the locking device 30, and as shown in FIG. 3, the pipe portions 19A and 19B of the fence bodies 13A and 13B of the car carts 10A and 10B are respectively first and second. Press against the first and second recesses 66A and 66B of the latches 60A and 60B. Then, the first latch 60A rotates in the clockwise direction, the second latch 60B rotates in the counterclockwise direction, and the first and second recesses 66A and 66B of the first and second latches 60A and 60B They rotate away from each other (see FIG. 6). The first and second recesses 66A and 66B accommodate the pipe portions 19A and 19B so that the tip portions 65A and 65B wrap around from the region S between the pipe portions 19A and 19B of the two car carriages 10A and 10B. At this time, the engaging protrusion 53A is pressed by the first engaged protrusion 68A (see FIG. 3), so that the first and second engaging members 50A and 50B become the first and second spring members 70A and 70B. It rotates in the direction opposite to the biasing direction. As the first and second engaging members 50A and 50B rotate, the engagement between the first engaged protrusion 68A and the engaging protrusion 53A is released (see FIG. 6).

  Thereafter, the first and second latches 60A and 60B are further rotated so as to be in the holding position. Then, as shown in FIG. 7, when the first and second recesses 66A and 66B are rotated to the opposite side (right-left side), the second engaged protrusion 69A is engaged with the stepped part 52A. In this case, the rotation of the first and second latches 60A and 60B is restricted and the holding position is obtained.

  Here, the aspect from the first position to the second position where the first and second latches 60A and 60B reach the holding position will be described in more detail. First, in the open position shown in FIG. 3, the first and second latches 60A and 60B have their tip portions 65A and 65B located in the region S between the pipe portions 19A and 19B. At this time, the latches 60A and 60B The angle θ formed with the front-rear direction is approximately 45 °. When the first and second latches 60A and 60B are rotated so that the angle θ is increased from the open position shown in FIG. 3, the first and second latches 60A and 60B are moved from the open position to the holding position. The state is in the middle of transition (see FIG. 6). Further, from this state, the first and second latches 60A and 60B are rotated so that the angle θ becomes large, and when the angle θ reaches the maximum (θ = 90 °), the first and second latches 60A and 60B. Becomes the holding position shown in FIG. 7, and holds the pipe portions 19A and 19B. Until the first and second latches 60A and 60B move from the open position shown in FIG. 3 to the holding position shown in FIG. 7, the tip portions 65A and 65B of the first and second latches 60A and 60B are The rotation locus always located outside the luggage W and drawn by the tip portions 65A and 65B does not intersect the luggage W. Accordingly, the tip portions 65A and 65B do not interfere with the luggage W accommodated in the car carts 10A and 10B. Even if the pipe portions 19A and 19B are bent, the car carts 10A and 10B do not interfere with the support member 140 when the first and second latches 60A and 60B shift from the open position to the holding position.

  When the first and second latches 60A and 60B are in the holding position, the first and second recesses 66A and 66B and the protrusion 142 are connected to the pipe portions 19A of the fence bodies 13A and 13B of the car carriages 10A and 10B. , 19B and the car carts 10A, 10B are locked. When the two car carts 10A and 10B are locked by the locking device 30, the first and second latches 60A are moved as the low lift truck 1 moves backward with the two car carts 10A and 10B being placed. 60B, even if an external force acts on the first and second latches 60A and 60B, the first and second latches 60A and 60B remain in the holding position. The locks for the pipe portions 19A and 19B are retained. Therefore, by locking the car carts 10A and 10B with the first latch 60A and the second latch 60B, the low lift truck 1 can perform the transport operation without any trouble.

  Further, when the first and second latches 60A and 60B lock the car carriages 10A and 10B, the lock lever 90 is directed from the lock position to the lock release position (in the direction of the arrow shown in FIG. 4B). When operated, the link member 100 for operation moves to the right side. Then, the connection link member 40 rotates in conjunction with the movement of the operation link member 100, and the first and second link members 110, 120 move symmetrically in conjunction with the rotation of the connection link member 40. Further, as the first and second link members 110 and 120 move, the first and second engagement members 50A and 50B are moved in the direction opposite to the urging direction of the first and second spring members 70A and 70B. The second engaged protrusion 69A of the first and second latches 60A and 60B gets over the stepped portions 52A and 52B. Then, as shown in FIG. 8, the engagement between the second engaged protrusion 69A and the stepped portions 52A and 52B is released, and the first and second latches 60A and 60B can be rotated. When the car carts 10A and 10B are pulled out from the lock device 30 from this state, the pipe portions 19A and 19B of the car carts 10A and 10B are detached from the first and second recesses 66A and 66B, respectively, and the first and second The latches 60A and 60B rotate in the direction in which the first and second recesses 66A and 66B approach each other, and return to the open position.

In this embodiment, the following effects can be obtained.
(1) The locking device 30 includes first and second base plates 31 and 34 installed on the low lift truck 1, and first and second latches 60A and 60B that are rotatably provided on the second base plate 34. First and second engaging members 50A and 50B are provided on the second base plate 34 so as to be rotatable. A first spring member 70A for biasing the first engagement member 50A is attached to the first engagement member 50A so as to be able to engage with the first latch 60A, and the second engagement member 50B. A second spring member 70B for urging the second engagement member 50B is attached to the second latch member 60B so as to be able to engage with the second latch 60B. The first and second latches 60A and 60B are arranged such that the distance T between the rotation centers P1 and P2 is shorter than the distance K between the pipe portions 19A and 19B of the two car carriages 10A and 10B. At the same time, when the pipe portions 19A and 19B are pressed, they rotate so as to go around from the area S of the two car carts 10A and 10B and switch to the holding position. Therefore, when the first and second latches 60A and 60B shift from the open position to the holding position and lock the two car carts 10A and 10B, the leading end portions 65A and 65B of the first latch 60A and the second latch 60B are locked. Interference with the luggage W accommodated in the car carts 10A and 10B can be suppressed.

  When the lock lever 90 is operated from the locked position to the unlocked position, the engagement between the stepped portion 52A of the first engaging member 50A and the second engaged protrusion 69A of the first latch 60A, and the second The engagement between the stepped portion 52B of the engaging member 50B and the second engaged protrusion 69A of the second latch 60B is released. Thereafter, when the pipe portions 19A and 19B of the two car carts 10A and 10B are detached from the first and second latches 60A and 60B, the locking of the two car carts 10A and 10B to the pipe portions 19A and 19B is released. The first and second latches 60A and 60B return to the open position.

  (2) The first latch 60A and the second latch 60B are provided above and below the second base plate 34, and the first engagement member 50A and the second engagement member 50B are disposed between the second base plate 34. It is provided above and below between. The first latch 60A and the second latch 60B are arranged in a partially overlapping state in plan view. Therefore, compared with the case where the pipe parts 19A and 19B of the two car carts 10A and 10B are locked by the first latch and the second latch located on the same plane, the distance between the two car carts 10A and 10B is reduced. In this state, the pipe portions 19A and 19B of the car carriages 10A and 10B can be locked.

  (3) A connection link member 40 provided rotatably in the bracket 32 in a state parallel to the vertical direction, a first link member 110 that connects the connection link member 40 and the first engagement member 50A, and a connection A second link member 120 that connects the link member 40 and the second engagement member 50B is provided. The connecting link member 40 is connected to the base end portion 90 a of the lock lever 90 by the operating link member 100. Therefore, if the lock lever 90 is operated from the locked position to the unlocked position, the first engaging member 50A and the second engaging member 50B are rotated in synchronization with the rotation of the connecting link member 40, The engagement between the first engagement member 50A and the first latch 60A and the engagement between the second engagement member 50B and the second latch 60B can be released.

  (4) A support member 140 is attached to the cover 130 so as to face the car carriages 10A and 10B. And the support member 140 is provided with the protrusion 142 which can be engaged with the pipe parts 19A and 19B, and the notch part 142b for interference prevention. Therefore, the car carts 10A and 10B can be more reliably locked by holding the pipe portions 19A and 19B between the first and second latches 60A and 60B and the protrusion 142. Further, when the pipe portions 19A and 19B of the car carts 10A and 10B are pressed against the first and second recesses 66A and 66B of the first and second latches 60A and 60B, the car carts 10A and 10B interfere with the support member 140. Can be avoided.

The embodiment is not limited to the above, and may be embodied as follows, for example.
The position where the first latch 60A and the second latch 60B are arranged may be changed. For example, the first latch 60A and the second latch 60B may be arranged on the upper surface of the second base plate 34 so as to exist on the same plane.

○ The configuration of the support member 140 may be changed. For example, the protrusion 144 may be omitted.
If the pipe portions 19A and 19B can be locked only by the first and second latches 60A and 60B, the support member 140 may be omitted.

  The present invention may be mounted on a transport device other than the low lift truck 1. For example, you may mount in the towing vehicle which pulls and conveys a car trolley | bogie. In this case, if the locking device is attached to the rear part of the towing vehicle and the first and second recesses 66A and 66B of the first and second latches 60A and 60B are arranged to face the rear side, the two car carts 10A and 10B Can be locked by locking the pipe portions 19A and 19B of the two car carts 10A and 10B, respectively.

(A) is a schematic side view of a low lift truck, a car cart, and a lock device, and (b) is a schematic perspective view showing a state in which two car carts are arranged side by side. The partial fracture | rupture model perspective view of the locking device in this embodiment. The partial model top view of the locking device in this embodiment. FIG. 3A is a schematic diagram as viewed in the direction of arrow α shown in FIG. 2, and FIG. The schematic perspective view which shows the locking device in the state where the cover was attached. The partial schematic top view which shows the state in the middle of the lock | rock by a locking device in this embodiment. The partial schematic top view which shows the lock completion state by a locking device in this embodiment. The partial schematic top view which shows the lock release state by a locking device in this embodiment.

Explanation of symbols

  K ... distance, S ... area, 1 ... low lift truck as a transfer device, 10A, 10B ... car cart, 19A, 19B ... pipe part, 30 ... lock device, 34 ... second base plate, 40 ... connecting link member, 50A ... 1st engagement member, 50B ... 2nd engagement member, 60A ... 1st latch, 60B ... 2nd latch, 65A, 65B ... Tip part, 70A ... 1st spring member as 1st biasing means, 70B ... Second spring member as second urging means, 90 ... Lock lever as unlocking operation member, 100 ... Link member for operation, 110 ... First link member, 120 ... Second link member, 140 ... Support member, 142b ... Notch for preventing interference.

Claims (4)

A base unit installed in a transfer device capable of transferring two car carts in parallel,
It is pivotally attached to the base part, and an open position that allows the pipe part extending in the vertical direction of one car carriage to be pressed against the tip part, and a holding position that locks the pipe part. A transferable first latch;
While being pivotably attached to the base portion, an open position that allows the pipe portion extending in the vertical direction of the other car carriage to be pressed against the tip portion and a holding position that locks the pipe portion A second latch capable of transition;
A first pivot member is provided on the base portion so as to be pivotable, and engages with the first latch when the first latch is in the open position and the holding position to restrict the pivoting of the first latch. An engaging member;
First biasing means for biasing the first engagement member so as to be in a posture capable of being engaged with the first latch;
A second pivot member is provided on the base portion so as to be pivotable, and engages with the second latch when the second latch is in the open position and the holding position, thereby restricting the pivoting of the second latch. An engaging member;
A second urging means for urging the second engagement member so as to be able to engage with the second latch;
When operated, the first engagement member is rotated against the urging force of the first urging means to release the engagement between the first engagement member and the first latch; An unlocking operation member for rotating the second engagement member against the urging force of the second urging means to release the engagement between the second engagement member and the second latch; With
The first latch and the second latch are arranged such that the distance between the rotation centers of the first latch and the second latch is shorter than the distance between the pipe portions of the two car carts,
The first latch and the second latch that are in the open position rotate when the pipe portion is pressed to rotate the first engagement member and the second engagement member, and the tip. The locking device is characterized in that the portion turns around from the region between the pipe portions of the two car carts and switches to the holding position. The first latch and the second latch are provided above and below, and the first engagement member and the second engagement member are provided above and below,
The locking device according to claim 1, wherein the first latch and the second latch are arranged in a partially overlapping state. A connecting link member provided rotatably in a state parallel to the vertical direction;
A first link member connecting the connection link member and the first engagement member;
A second link member connecting the connection link member and the second engagement member;
The locking device according to claim 2, further comprising: an operating link member that connects the connecting link member and the unlocking operation member. A support member is attached to the base portion at a position facing each of the car carts,
The support member includes a projecting portion that sandwiches the pipe portion in cooperation with the first latch and the second latch when the first latch and the second latch are in the holding position, and the car carriage The locking device according to any one of claims 1 to 3, further comprising a notch portion for preventing interference so as not to interfere with the lock.

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