JP6905893B2 - Mobile shelf lock device - Google Patents

Description

The present invention relates to a moving shelf locking device.

Conventionally, in offices and the like, mobile shelves have been provided that effectively utilize the limited space and efficiently store items such as documents. The moving shelves are installed in front of a plurality of fixed shelves installed side by side, for example. When using the fixed shelves in the back row, the worker moves the moving shelves in the front row in the lateral direction and enters the work space formed by the moving shelves to perform the work. Here, if another worker moves the moving shelf or the moving shelf moves due to an earthquake or the like while the worker is working in the work space, the work space is narrowed and the worker comes into contact with the moving shelf. There is a risk.

Therefore, conventionally, a technique for suppressing (locking) the movement of the moving shelf has been proposed. For example, Patent Document 1 discloses a mobile shelf regulation device that regulates the movement of a mobile shelf. The moving shelf regulating device is provided on a base portion arranged between a pair of guide rails. For example, when an operator steps on one end of a pedal portion constituting a moving shelf regulating device in a work space, the other end of the pedal portion projects upward from the upper surface of the base portion and comes into contact with the side surface of the moving shelf. It will be possible. According to the above configuration, the worker can regulate the movement of the moving shelf by operating the moving shelf regulating device when entering the work space and performing the work.

Japanese Unexamined Patent Publication No. 2013-78427

However, in the technique of Patent Document 1, since the moving shelf regulating device must be incorporated inside the base portion, the configuration of the entire moving shelf becomes complicated. Further, since the operator must step on the pedal portion after entering the work space in order to lock the moving shelf, he / she is forced to perform a troublesome operation. Further, it is conceivable that the worker forgets the operation of locking the moving shelf and performs the work, or consciously omits the operation and performs the work, and it is difficult to ensure safety.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a locking device capable of locking a moving shelf with a simple configuration and operation.

In order to solve the above problems, the moving shelf locking device according to the present invention is a moving shelf locking device having wheels traveling on rails, and the first moving shelf passes above and in the vertical direction. A movable first tread plate on which an operator rides, a first urging portion that gives a first urging force to the back surface of the first tread plate in a first direction upward from the floor surface, and an upper and lower part of the first tread plate. A fixing portion for fixing the position in the direction is provided, and a force in the second direction against the first urging force is applied to the upper surface of the first tread plate in the first work space to move the first tread plate to a lower position. When it moves, the side portion of the first tread plate can come into contact with the first moving shelf, the movement of the first moving shelf to the first work space is suppressed, and the first tread plate moves downward. When the fixed state of the first tread plate is released when the first tread plate is fixed at the position by the fixing portion, the first tread plate is moved in the first direction by the first urging force, so that the first tread plate is moved in the first direction. It is characterized in that the movable shelf can be moved to the first work space.

According to the above configuration, for example, when an operator enters the work space and gets on the tread plate, the side surface of the tread plate can come into contact with the moving shelf, so that the moving shelf can be locked. Therefore, according to the lock device, the moving shelf can be locked by a simple configuration and operation.

Here, in the moving shelf locking device according to the present invention, when a force in the second direction is applied to the upper surface of the first tread plate in the first work space, the device moves to the lower position on the first tread plate. When the side portion can come into contact with the side portion of the first moving shelf and the fixed state of the first tread plate is released when the first tread plate is fixed at the lower position, the said By moving the side portion of the first tread plate in the first direction, the first moving shelf can be moved to the first work space.

Further, in the moving shelf locking device according to the present invention, the fixing portion engages with an operation portion provided so as to project from the upper surface of the first tread plate in the first direction and operates in response to the operation of the operation portion. A latch mechanism including a portion, and an engaged portion with which the engaging portion engages, and a force in the second direction is applied to the upper surface of the first tread plate in the first work space. In the case, when the engaging portion engages with the engaged portion, the first tread plate is fixed at the lower position, and the operation portion is fixed at the lower position. When a force in the second direction is applied to the first step plate, the engaged state of the engaged portion and the engaged portion is released, so that the fixed state of the first tread plate is released. You can also do it.

Further, in the moving shelf locking device according to the present invention, while the first tread plate is in the fixed state, the height from the floor surface to the upper surface of the first tread plate and the height from the floor surface to the upper surface of the rail. May be approximately the same.

Further, in the moving shelf locking device according to the present invention, the first urging force is applied to the back surface of one of the front side of the first tread plate where the worker enters and exits and the rear side which is the opposite side. The other end of the front side and the rear side of the first tread plate may be rotatably fixed to the first tread plate in the first direction and the second direction.

Further, in the moving shelf locking device according to the present invention, the locking device further includes a first stopper installed on a carriage provided with the wheels, and the first stopper is from the bottom surface of the carriage to the floor surface. It is provided with a first portion extending toward, and a second portion extending from the first portion in a direction intersecting the moving direction of the first moving shelf, and while the first tread plate is in the fixed state. The height from the floor surface to the first tread plate is substantially equal to the height from the floor surface to the second portion, and the side portion of the first tread plate can come into contact with the second portion. While the fixed state of the first tread plate is released, the height from the floor surface to the lower surface of the first tread plate is higher than the height from the floor surface to the second portion, and the first moving shelf The second portion may be movable between the floor surface and the first tread plate.

Further, in the moving shelf locking device according to the present invention, when the second portion exists between the floor surface and the first tread plate, a force in the second direction is applied to the upper surface of the first tread plate. In this case, the first tread plate moves in the second direction and the back surface of the first tread plate abuts on the upper surface of the second portion, whereby the first moving shelf is moved to the first work space. It may be configured to suppress.

Further, in the moving shelf locking device according to the present invention, the first stopper is detachably installed on the trolley with the first moving shelf installed on the rail, and the first tread plate is the said. The first moving shelf may be installed close to the rail with the first moving shelf installed on the rail.

Further, in the moving shelf locking device according to the present invention, the second moving shelf passes above and can move in the vertical direction, and the second tread on which the worker rides and the back surface of the second tread from the floor surface. A second urging portion that gives a second urging force in the first direction upward is further provided, and a force in the second direction that opposes the second urging force is applied to the upper surface of the second tread plate in the second work space. During the given first state, the side portion of the second tread plate can come into contact with the second moving shelf, so that the movement of the second moving shelf to the second working space is suppressed. On the other hand, during the second state in which the force in the second direction is not applied to the upper surface of the second tread in the second work space, the second moving shelf can be moved to the second work space. It may be configured to be.

Further, in the moving shelf locking device according to the present invention, the first state is a state in which the worker is on the second tread plate in the second work space, and the second state is a state in which the worker is on the second tread plate. It is also possible to make the state not riding on the second tread plate in the second work space.

Further, in the moving shelf locking device according to the present invention, the second moving shelf may be arranged in the back row of the first moving shelf.

According to the moving shelf locking device according to the present invention, the moving shelf can be locked by a simple configuration and operation.

It is a perspective view which shows the schematic structure of the moving shelf system which concerns on Embodiment 1. FIG. It is a perspective view which shows the schematic structure of the fixed base in the moving shelf system which concerns on Embodiment 1. FIG. It is a figure which shows the specific structure of the tread plate in the lock device which concerns on Embodiment 1, (a) is the plan view of the tread plate, and (b) is the A arrow view of (a). 2 is a view taken along the line B of FIG. 2, where FIG. 2A shows a state in which the worker is not on the tread (unlatch state), and FIG. 2B is a state in which the worker is on the tread when the latch is released. Indicates the state (locked state). The state (latch fixed state) when the operator gets off the tread after the locked state shown in FIG. 4B is shown. It is a figure which shows the specific structure of the carriage in the moving shelf which concerns on Embodiment 1, (a) is the plan view of the carriage, (b) is the C arrow view of (a), (c) is It is a D arrow view of (a). FIG. 5 is a side view showing a state when an operator is not on a tread plate and the tread plate is not fixed at a lower position (latch release state) in the moving shelf system according to the first embodiment. It is a partially enlarged view of FIG. It is a figure which shows the state in the process of moving a moving shelf in the moving shelf system which concerns on Embodiment 1. FIG. FIG. 5 is a side view showing a state when an operator is on a tread (locked state) in the moving shelf system according to the first embodiment. It is a partially enlarged view of FIG. FIG. 5 is a perspective view showing a state before an operator gets on a tread in the moving shelf system according to the first embodiment. It is a side view which shows the other state when an operator is not riding on a tread plate, and the tread plate 32 is fixed at a lower position (latch fixed state). FIG. 5 is a side view showing another state when an operator is on a tread (locked state) in the moving shelf system according to the first embodiment. It is a partially enlarged view of FIG. It is a perspective view which shows the other structure of the stopper in the lock device which concerns on Embodiment 1. FIG. It is a perspective view which shows the schematic structure of the moving shelf system which concerns on Embodiment 2. It is a perspective view which shows the schematic structure of the fixed base in the moving shelf system which concerns on Embodiment 2. FIG. It is a figure which shows the specific structure of the tread plate in the lock device which concerns on Embodiment 2, (a) is the plan view of the tread plate, and (b) is the A arrow view of (a). FIG. 18B is a view taken along the arrow B. FIG. 18A shows a state in which the worker is not on the tread (second state), and (b) shows a state in which the worker is on the tread (first state). Shown. FIG. 5 is an enlarged side view showing a state when an operator is not on a tread (second state) in the moving shelf system according to the second embodiment. FIG. 5 is an enlarged side view showing a state when an operator is on a tread plate (first state) in the moving shelf system according to the second embodiment. It is a side view which shows the operation example of the lock device in the moving shelf system which concerns on Embodiment 2. FIG. It is a side view which shows the operation example of the lock device in the moving shelf system which concerns on Embodiment 2. FIG. FIG. 5 is a side view showing another state when an operator is on a tread (first state) in the moving shelf system according to the second embodiment. FIG. 5 is a side view showing a state of a lock device according to a modified example when an operator is not on a tread plate (second state) in the moving shelf system according to the second embodiment. FIG. 5 is a side view showing a state of a lock device according to a modified example when an operator is on a tread plate (first state) in the moving shelf system according to the second embodiment.

Embodiments of the present invention will be described below with reference to the drawings. The moving shelf system according to the embodiment of the present invention includes, for example, a plurality of fixed shelves installed along a wall surface and at least one moving shelf installed in front (front row) of the plurality of fixed shelves. There is. The moving shelves may be installed in only one row in front of the fixed shelves, or may be installed in two or more rows. In the first embodiment shown below, a mobile shelf system in which only one row of mobile shelves is installed will be described as an example, and in the second embodiment, a mobile shelf system in which two rows of mobile shelves are installed will be described as an example. do.

[Embodiment 1]
FIG. 1 is a perspective view showing a schematic configuration of a mobile shelf system according to the first embodiment. The moving shelf system according to the first embodiment has at least one moving shelf 1 (first moving shelf) movably installed in the lateral direction (frontage direction) (two in FIG. 1) and a rear of the moving shelf 1. It includes a plurality of fixed shelves 2 (three in FIG. 1) fixedly installed in (rear row), and a fixed base 3 installed on the floor surface. Further, the moving shelf system includes a locking device that regulates the movement of the moving shelf 1. The number of moving shelves 1 and fixed shelves 2 is not limited, but the number of moving shelves 1 is smaller than the number of fixed shelves 2.

The fixed base 3 includes a pair of front and rear rails 31A and 31B arranged under the moving shelf 1, and a plurality of tread plates 32 (first tread plates) installed between the rails 31A and 31B. The fixed base 3 is fixed to the floor surface. The pair of rails 31A and 31B are arranged in parallel with each other along the horizontal direction shown in FIG. 1, and the plurality of tread plates 32 are arranged in the horizontal direction. Further, the tread plate 32 is a portion on which the operator rides when using the fixed shelf 2 in the back row, and serves as a work floor in the work space (first work space) in front of the fixed shelf 2. The tread plates 32 are divided and installed by the same number as the fixed shelves 2, and in the example shown in FIG. 1, three tread plates 32 are installed.

The moving shelf 1 includes a trolley 11 movably mounted on the rails 31A and 31B, and a moving shelf main body 12 (storage) mounted and fixed on the trolley 11. The carriage 11 includes four wheels 111 (see FIG. 6) traveling on the rails 31A and 31B. The movable shelf 1 is configured to be movable in the lateral direction (see FIG. 1) by a manual operation of an operator. The moving shelf 1 moves laterally above the tread plate 32.

The fixed shelf 2 includes a rear base 21 mounted and fixed on the rear side of the fixed base 3, and a fixed shelf main body 22 (storage) mounted and fixed on the rear base 21. ..

The moving shelf main body 12 and the fixed shelf main body 22 shown in FIG. 1 show a cabinet with a door, but the type of storage is not limited. The moving shelf system shown in FIG. 1 shows a horizontal slide method in which the moving shelf 1 moves in the width (frontage) direction of the moving shelf main body 12.

FIG. 2 is a perspective view showing a schematic configuration of the fixed base 3. The fixed bases 3 are integrally formed in the front-rear direction, and the same number (three in this case) as the fixed shelves 2 are installed. The tread plate 32 is installed on the front side of the fixed base 3 so as to be movable in the upward direction (first direction) and the downward direction (second direction). The fixed base 3 further includes an engaged portion 313 (fixed portion) for fixing the vertical movement (position) of the tread plate 32. The engaged portion 313 is fixed to, for example, the intermediate frame 33 of the fixed base 3 with screws or the like. Note that FIG. 2 shows one rear base 21 on which one fixed shelf 2 is placed.

FIG. 3 is a diagram showing a specific configuration of the tread plate 32. FIG. 3A is a plan view of the tread plate 32, and FIG. 3B is a view taken along the arrow A of FIG. 3A (side view). The tread plate 32 includes a tread plate main body 320, a spring 321 (first biasing portion) (for example, a compression coil spring) provided on the front back surface of the tread plate main body 320, and a regulation portion 322 provided on the front back surface of the tread plate main body 320. A rotating shaft portion 323 provided on the side surface of the rear end portion of the tread plate main body 320, and a latch mechanism 326 (fixed portion) provided on the upper surface and the back surface of the tread plate main body 320 on the central side are provided. One spring 321 is provided on the front side in the depth direction and near the center in the width direction of the tread plate main body 320, and one regulating portion 322 is provided on the front side of the spring 321 and near both ends in the width direction. One 323 is provided at the rear end in the depth direction and near both ends in the width direction of the tread plate main body 320, and one latch mechanism 326 is provided near the center in the depth direction and near the center in the width direction of the tread plate main body 320. It is provided. Only one restricting portion 322 may be provided and fixed together with the spring 321 at the same position as the spring 321 by a screw or the like. As shown in FIG. 3B, the regulating portion 322 includes a regulating portion side plate 322A extending in the second direction from the back surface of the tread plate main body 320, and a regulating portion bottom plate 322B extending forward from the regulating portion side plate 322A. It has. The latch mechanism 326 includes an operation unit 326A that is operated (pressed) by an operator, and an engaging unit 326B that operates (advance / retreat) in the front-rear direction in response to an operation on the operation unit 326A. An opening is formed near the center of the tread plate main body 320, and in the latch mechanism 326, the operation portion 326A is inserted through the opening from the back surface of the tread plate main body 320 and protrudes upward (first direction) and engages with the latch mechanism 326. The portion 326B is fixed to the back surface of the tread plate main body 320 by a screw or the like so that the portion 326B faces the front direction side. As shown in FIG. 2, the tread plate 32 is attached between the rails 31A and 31B after the pair of rails 31A and 31B are installed. One end (upper end) of the spring 321 is fixed to the back surface of the front side of the tread plate body 320 with screws or the like (see FIG. 3B), and the other end (lower end) of the spring 321 is on the intermediate frame 33 of the fixed base 3. It is abutted (see FIG. 2). The latch mechanism 326 shown in FIG. 3 is fixed (latch fixed) to the engaged portion 313 shown in FIG. 2 or released (released) (latch released) from the engaged portion 313 according to the operation of the latch mechanism 326. It is done.

4 and 5 are B arrow views (side views) of FIG. FIG. 4A shows a state in which the operator is not on the tread 32 (latch release state), and FIG. 4B shows a state in which the worker is on the tread 32 in the latch release state (locked state). ), And FIG. 5 shows a state (latch fixed state) when the operator gets off the tread 32 after the locked state.

As shown in FIGS. 4 and 5, the fixing base 3 includes a rail cover 31D that receives and fixes the rail 31A, and a rail cover 31C that receives and fixes the rail 31B. The rail cover 31C includes an opening 311C into which the rotating shaft portion 323 of the tread plate 32 is inserted. The rail cover 31D includes a bottom plate 311D on which the rail 31A is placed, and a side plate 312D that rises upward (first direction) from the bottom plate 311D. As shown in FIG. 1, the engaged portion 313 is fixed to the intermediate frame 33 of the fixed base 3, and the engaged portion 326B is provided between the intermediate frame 33 and the upper portion (upper surface) of the engaged portion 313. A space (receptive part) for receiving is formed. The engaged portion 313 receives the engaging portion 326B of the latch mechanism 326 according to its advancing / retreating operation. The state in which the engaging portion 326B is received by the engaged portion 313 is referred to as an engaged state, and the state in which the engaging portion 326B is not received by the engaged portion 313 is referred to as a non-engaged state.

As shown in FIG. 4A, in the tread plate 32, the rotating shaft portion 323 is inserted into the opening 311C of the rail cover 31C, and the regulation portion bottom plate 322B of the regulation portion 322 is under the bottom plate 311D of the rail cover 31D. It is installed on the fixed base 3 so that it can be inserted. In the unlatched state shown in FIG. 4A, the spring 321 always urges the back surface of the tread 32 (tread body 320) in the first direction upward from the floor surface (first urging force) (in the figure). Arrow) is given. As a result, the regulating portion bottom plate 322B of the regulating portion 322 is in contact with the back surface of the bottom plate 311D. Further, in the latch release state shown in FIG. 4A, the upper surface of the front end portion of the tread plate 32 is only higher than the upper surface of the rear end portion of the tread plate 32, the upper surfaces of the rails 31A and 31B, and the upper surface of the fixed base 3. It is raised, and a gap 324 is formed between the tread plate 32 and the side plate 312D of the rail cover 31D. Further, in the latch release state shown in FIG. 4A, the engaging portion 326B of the latch mechanism 326 is located above the engaged portion 313 and is not engaged with the engaged portion 313.

In the locked state shown in FIG. 4B, when the operator rides on the tread plate 32, a force in the second direction that opposes the urging force is applied to the upper surface of the tread plate 32 (tread plate main body 320). As a result, the spring 321 contracts, and the tread plate 32 rotates (moves) in the second direction toward the floor surface with the rotation shaft portion 323 as a fulcrum. In the state shown in FIG. 4B, the operation unit 326A is not stepped on by the operator. When the tread plate 32 rotates in the second direction, the engaging portion 326B of the latch mechanism 326 moves in the second direction and comes into contact with the upper portion of the engaged portion 313. Further, when the tread plate 32 rotates in the second direction, the engaging portion 326B is restricted to the upper portion of the engaged portion 313 and retracts in the internal direction of the latch mechanism 326 (rear direction in FIG. 4B). Further, when the tread plate 32 rotates in the second direction and the position of the upper portion of the engaging portion 326B is lower than the position of the upper portion of the engaged portion 313, the regulation by the engaged portion 313 is released and the engaging portion 326B is latched. It advances from the inside of the mechanism 326 toward the outside (forward direction in FIG. 4B) (direction of the receiving portion of the engaged portion 313) and engages with the engaged portion 313. Then, the rotation of the tread plate 32 is stopped when the back surface (lower surface) of the front end portion abuts on the upper surface of the side plate 312D of the rail cover 31D. In the locked state shown in FIG. 4B, the upper surface of the front end portion of the tread plate 32 is at the same height as the upper surface of the rear end portion of the tread plate 32, the upper surfaces of the rails 31A and 31B, and the upper surface of the fixed base 3. The gap 324 (see FIG. 4A) between 32 and the side plate 312D of the rail cover 31D is reduced (or eliminated).

When the operator gets off the tread 32 in the locked state shown in FIG. 4 (b), as shown in FIG. 5, the tread 32 is subjected to the first urging force (arrow in FIG. 5) by the spring 321. Rotate in one direction. When the tread plate 32 rotates in the first direction, the engaging portion 326B of the latch mechanism 326 moves in the first direction while being engaged with the engaged portion 313, and the upper portion of the engaged portion 313 is engaged. It abuts on the back side of. As a result, as shown in FIG. 5, the engaging portion 326B is maintained in a state of being engaged with the engaged portion 313, and the tread plate 32 is fixed at the lower position. In the latch-fixed state shown in FIG. 5, the spring 321 applies an urging force in the first direction to the back surface of the tread plate main body 320, while the engaging portion 326B of the latch mechanism 326 engages with the engaged portion 313, thereby causing the tread plate. The movement of 32 in the first direction is restricted.

In the latch fixed state shown in FIG. 5, when the operator presses the operation portion 326A of the latch mechanism 326 (latch release operation), the engaging portion 326B retracts in the internal direction of the latch mechanism 326 (rear direction in FIG. 5). As a result, the engaged state between the engaging portion 326B and the engaged portion 313 is released (latch released), and the tread plate 32 is rotated by the urging force in the first direction (arrow in FIG. 5) by the spring 321 again. The state shown in FIG. 4A is obtained.

In this way, the tread plate 32 moves (rotates) by a distance corresponding to the gap 324 according to the operation of the operator getting on and off and the operation of the operator operating the operation unit 326A (latch release operation). The state of 4 (a), the state of FIG. 4 (b), and the state of FIG. 5 are repeated.

FIG. 6 is a diagram showing a specific configuration of the dolly 11. 6 (a) is a plan view of the dolly 11, FIG. 6 (b) is a view taken along the arrow C of FIG. 6 (a), and FIG. 6 (c) is a D of FIG. 6 (a). It is an arrow view (side view). The dolly 11 is attached to four wheels 111 arranged at the four corners, a stopper 112 (first stopper) extending in the moving direction (lateral direction) of the dolly 11, and an end portion of a side plate extending in the depth direction. It is provided with the four cushioning rubbers 113 and the like. As shown in FIG. 6C, the stopper 112 has a first portion 112A extending from the bottom surface of the trolley 11 toward the floor surface (in the second direction), and a moving direction of the trolley 11 from the first portion 112A. It is provided with a second portion 112B extending rearward in a direction intersecting with (here, a depth direction), and is fixed to a member constituting the carriage 11. Further, the stopper 112 is provided so that the tip portion of the second portion 112B is inserted into the gap 324 (see FIG. 5A) when the carriage 11 is mounted on the rails 31A and 31B. , Fixed to the trolley 11 (see FIG. 7). The moving shelf body 12 is placed and fixed on the upper surface of the carriage 11. The stopper 112 may be divided into two and provided at the left and right ends of the carriage 11 (see FIG. 6A).

FIG. 7 is a side view showing a state of the moving shelf system when the operator is not on the tread 32 and the tread 32 is not fixed at the lower position (latch release state). The fixed base 3 shown in FIG. 7 shows the same state as in FIG. 4 (a). FIG. 8 is a partially enlarged view of FIG. 7. In addition, in FIG. 7 and FIG. 8, the right side surface of the moving shelf 1 (including the trolley 11) at the right end of FIG. 1 and the right side surface of the tread plate 32 (work floor) in the center of FIG. 1 are shown.

As shown in FIGS. 7 and 8, when the operator is not on the tread 32 (work floor), the second portion 112B of the stopper 112 is in a state of not abutting on the tread 32, so that the gap 324 (FIG. 7). The inside of the moving shelf 1 can be moved (see 8), and the moving shelf 1 can be moved in the horizontal direction (perpendicular to the paper surface of FIGS. 7 and 8). The positional relationship between the second portion 112B of the stopper 112 and the left and right treads 32 of the treads 32 on the work floor is the same. As shown in FIG. 7, a fall prevention metal fitting 114 for preventing the moving shelf 1 from falling forward may be provided on the carriage 11. FIG. 9 shows a state in which the moving shelf 1 is moving above the tread 32 of the work floor. As shown in FIG. 9, when the operator applies a lateral force to the moving shelf 1, the moving shelf 1 moves laterally while the second portion 112B of the stopper 112 moves in the gap 324.

FIG. 10 is a side view showing a state of the moving shelf system when the operator is on the tread 32 (locked state). The fixed base 3 shown in FIG. 10 shows the same state as in FIG. 4 (b). FIG. 11 is a partially enlarged view of FIG. In addition, in FIGS. 10 and 11, similarly to FIGS. 7 and 8, the right side of the moving shelf 1 (including the trolley 11) at the right end of FIG. 1 and the right side of the tread 32 (work floor) in the center of FIG. Shows a face.

As shown in FIGS. 10 and 11, when the operator gets on the tread 32 (work floor), the tread 32 moves in the second direction by a distance (H1) corresponding to the gap 324 (see FIG. 4A). As it rotates, the engaging portion 326B of the latch mechanism 326 engages with the engaged portion 313, and the back surface of the front end portion of the tread plate 32 comes into contact with the upper surface of the side plate 312D of the rail cover 31D and is fixed. As a result, the height from the floor surface to the center (vertical direction) of the front end portion of the tread 32 (work floor) and the height from the floor surface to the center (vertical direction) of the second portion 112B of the stopper 112 become substantially equal. , The side surface of the front end portion of the tread plate 32 (work floor) can come into contact with the side surface of the second portion 112B. For example, in the state shown in FIG. 12, when the moving shelf 1 is moved to the left after the operator gets on the tread plate 32, the side surface of the front end portion of the tread plate 32 hits the side surface of the second portion 112B of the stopper 112. Touch. As a result, the movement of the moving shelf 1 to the left (work space) is suppressed (locked). In FIG. 12, for convenience of explanation, the tread plate 32 directly below the moving shelf 1 is omitted.

FIG. 13 is an enlarged side view showing a state of the moving shelf system when the operator is not on the tread 32 and the tread 32 is fixed at the lower position (latch fixed state). The fixed base 3 shown in FIG. 13 shows the same state as in FIG.

As shown in FIG. 13, when the operator gets off the tread 32 in the locked state shown in FIG. 11, the tread 32 moves in the first direction by the urging force in the first direction (arrow in FIG. 13) by the spring 321. Although slightly rotated, the engaging portion 326B remains engaged with the engaged portion 313, and the tread plate 32 is fixed in the lower position. As a result, following the locked state, the side surface of the front end portion of the tread 32 (work floor) is maintained in a state where it can come into contact with the side surface of the second portion 112B, and the moving shelf 1 can be moved to the left (work space). It is suppressed (locked).

Here, when the operator is not on the tread 32 and the tread 32 is not fixed at the lower position (when the latch is released as shown in FIG. 7), the second portion 112B of the stopper 112 has a gap 324. The conditions for making the inside movable (conditions for making the movable shelf 1 movable) are, for example, that the height from the floor surface to the center of the second portion 112B of the stopper 112 is from the floor surface to the rail cover 31D. It is higher than the height to the upper surface of the side plate 312D and lower than the height from the floor surface to the back surface (lower surface) of the front end portion of the tread plate 32 (see FIGS. 4 and 7). That is, the second portion 112B of the stopper 112 may be contained within the gap 324. On the other hand, when the worker is on the tread 32 (in the locked state shown in FIG. 10) and when the worker gets off the tread 32 in the locked state (when the latch is fixed as shown in FIG. 13). The condition for the side surface of the front end portion of the tread plate 32 and the side surface of the second portion 112B to be in contact with each other (condition for locking the moving shelf 1) is, for example, the second portion of the stopper 112 from the floor surface. The height to the center of 112B is higher than the height from the floor surface to the back surface of the front end portion of the tread plate 32, and lower than the height from the floor surface to the upper surface of the front end portion of the tread plate 32. That is, when viewed from the side surface (see FIGS. 11 and 13), if at least a part of the tip end portion of the second portion 112B of the stopper 112 is superimposed on at least a part of the side surface portion of the front end portion of the tread plate 32. good. The shapes and external dimensions of the tread plate 32 and the stopper 112 may be appropriately set within a range satisfying each of the above conditions. In the state where the moving shelf 1 is locked, the front end portion of the tread plate 32 and the second portion 112B of the stopper 112 may be in contact with each other on their respective side surfaces, or a part of each side surface may be partially in contact with each other. You may abut. That is, the front end portion of the tread plate 32 and the second portion 112B of the stopper 112 may be brought into contact with each other (including a side surface and a part of the side surface).

The lock device according to the first embodiment includes a tread plate 32, a stopper 112 installed on the carriage 11, and an engaged portion 313 installed on the fixed base 3. An operation example of the lock device of the moving shelf 1 when the operator uses the moving shelf system will be described below.

First, when a worker stores an article in, for example, a fixed shelf 2 in the back row (for example, the central fixed shelf 2 shown in FIG. 1), the operator moves the moving shelf 1 located in front of the fixed shelf 2 in the lateral direction. Secure a work space (the front central part shown in FIG. 1). At this time, it is preferable to secure a work space having a frontage that is at least the width (horizontal length) of the tread plate 32 or more. As a result, the entire central tread 32, which is the work floor, is exposed (see FIG. 1). Next, the worker enters the work space and gets on the tread 32 of the work floor. Then, the tread plate 32 of the work floor moves (rotates) downward (second direction) due to the weight of the operator, the engaging portion 326B of the latch mechanism 326 engages with the engaged portion 313, and the rail cover 31D It comes into contact with the upper surface of the side plate 312D (see FIG. 4B), and the state shown in FIGS. 10 and 11 is obtained. As a result, the side surface of the front end portion of the tread plate 32 can come into contact with the side surface of the second portion 112B of the stopper 112, so that the moving shelves 1 located on the left and right sides of the operator are locked, and the moving shelves 1 can be brought into the work space. Movement is restrained (regulated). The worker stores the article on the fixed shelf 2 in the secured work space. Next, when the work is completed, the worker gets off the tread 32 and exits from the work space. Even if the worker gets off the tread 32, the engaging portion 326B is maintained in a state of being engaged with the engaged portion 313 (see FIG. 13), so that the movement of the moving shelf 1 to the work space is still suppressed (regulation). ). When the operator wants to move the moving shelf 1, he presses the operation unit 326A of the latch mechanism 326. Then, the engaged state between the engaging portion 326B and the engaged portion 313 is released (latch released), the tread plate 32 moves (rotates) upward (first direction) due to the urging force of the spring 321 and the regulating portion 322. Is in contact with the back surface of the bottom plate 311D (see FIG. 4A), and the state shown in FIGS. 7 and 8 is obtained. As a result, the moving shelf 1 is unlocked and can be moved to the left or right.

The operation of the lock device of the moving shelf 1 is not limited to the above operation. For example, it is conceivable that the worker works in a work space having a frontage smaller than the width (horizontal length) of the tread 32. In this case, as shown in FIG. 9, a part of one tread 32 serving as a work floor is covered with the moving shelf 1, and the second portion 112B of the stopper 112 is the gap 324 of the tread 32 (FIG. 4 (a). ) Refer to). When an operator enters the work space and gets on the tread 32 (work floor) in this state, the tread 32 moves (rotates) downward (second direction) due to the weight of the operator, and the front end of the tread 32. The back surface of the stopper 112 comes into contact with the upper surface of the second portion 112B of the stopper 112, resulting in the state shown in FIG. FIG. 15 is a partially enlarged view of FIG. In the state shown in FIGS. 14 and 15, the engaging portion 326B of the latch mechanism 326 is not engaged with the engaged portion 313, and is always on the upper surface of the second portion 112B of the stopper 112 to the weight of the operator. The corresponding force is applied. As a result, the left and right movement of the moving shelf 1 is suppressed by the frictional force of the contact surface between the tread plate 32 and the stopper 112. When the work is completed and the operator gets off the tread 32, the tread 32 moves (rotates) upward (first direction) due to the urging force of the spring 321 and the regulating portion 322 comes into contact with the back surface of the bottom plate 311D (FIG. 4 (a)), the state shown in FIGS. 7 to 9 (second state) is obtained. As a result, the moving shelf 1 is unlocked and can be moved to the left or right.

According to the configuration of the lock device according to the first embodiment, for example, the moving shelf 1 can be locked only by the operator entering the work space (getting on the tread 32). That is, according to the above configuration, the operator does not need to perform a special operation for locking the moving shelf 1. Further, regardless of the position where the moving shelf 1 exists, the moving shelf 1 can be locked by the operator entering the work space. For example, even when the moving shelf 1 exists at an intermediate position where a work space smaller than the width of the tread 32 is formed as shown in FIG. 9, the moving shelf 1 can be locked. Therefore, according to the lock device according to the first embodiment, the moving shelf 1 can be locked by a simple configuration and operation. Further, since the moving shelf 1 is locked without the operator being aware of it, the safety of the operator in the work space can be improved as compared with the conventional configuration.

Further, when the operator leaves the work space and does not perform the latch release operation of the latch mechanism 326, the locked state of the moving shelf 1 is maintained. Therefore, for example, it is possible to prevent the moving shelf 1 from moving due to an earthquake or the like when the moving shelf system is not in use.

Here, the lock device according to the first embodiment may have a configuration that can be attached to an existing mobile shelf system. For example, according to the configuration of the tread plate 32 shown in FIG. 3, the existing tread plate can be easily replaced with the tread plate 32 shown in FIG. 3 by the method shown in FIG. Further, by configuring the stopper 112 shown in FIG. 6 as shown in FIG. 16, the stopper 112 shown in FIG. 16 can be attached to the existing moving shelf. The stopper 112 shown in FIG. 16 includes a stopper side plate 112C that comes into contact with the side surface of the trolley 11, a screw hole 112E for screwing together with the buffer rubber 113, and a stopper that extends from the stopper side plate 112C toward the bottom surface of the trolley 11. It includes a bottom plate 112D, a first portion 112A extending from the stopper bottom plate 112D toward the floor surface (in the second direction), and a second portion 112B extending rearward from the first portion 112A in the depth direction. .. The first portion 112A and the second portion 112B shown in FIG. 16 have the same functions as the first portion 112A and the second portion 112B shown in FIG. According to the above configuration, by attaching the lock device (tread plate, stopper and engaged portion) to the existing moving shelf system in which the moving shelf is installed on the rail, the existing movement can be performed by a simple configuration and operation. It becomes possible to lock the shelves.

[Embodiment 2]
Embodiment 2 of the present invention will be described below with reference to the drawings. For convenience of explanation, the same components as those shown in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Further, the terms defined in the first embodiment shall be used in the second embodiment in accordance with the definitions unless otherwise specified.

FIG. 17 is a perspective view showing a schematic configuration of the mobile shelf system according to the second embodiment. The moving shelf system according to the second embodiment has at least one moving shelf 1A (first moving shelf) and a moving shelf 1A, which are movably installed in the front row in the lateral direction (frontage direction) (two in FIG. 17). At least one (two in FIG. 17) moving shelves 1B (second moving shelf) and rear (rear row) of the moving shelf 1B, which are movably installed in the lateral direction (frontage direction) behind the moving shelf (middle row). It is provided with a plurality of fixed shelves 2 (three in FIG. 17) fixedly installed on the floor and a fixed base 3 installed on the floor surface. Further, the locking device in the moving shelf system according to the second embodiment includes a first locking device that regulates the movement of the moving shelf 1A and a second locking device that regulates the movement of the moving shelf 1B. The number of moving shelves 1A and 1B and the number of fixed shelves 2 is not limited, but the number of each of the moving shelves 1A and 1B is smaller than the number of fixed shelves 2.

The moving shelf 1A according to the second embodiment has the same configuration as the moving shelf 1 according to the first embodiment, and the first locking device according to the second embodiment has the same configuration as the locking device according to the first embodiment. There is. That is, the first lock device is composed of the tread plate 32 (see FIG. 3), the stopper 112 (see FIG. 6), and the engaged portion 313 (see FIG. 2) according to the first embodiment. Hereinafter, the description of the moving shelf 1A and the first locking device will be omitted as appropriate, and the configuration of the moving shelf 1B and the second locking device will be mainly described.

The fixed base 3 is provided under a pair of front and rear rails 31A and 31B arranged under the moving shelf 1A, a plurality of treads 32A (first treads) installed between the rails 31A and 31B, and a moving shelf 1B. It includes a pair of front and rear rails 34A and 34B arranged, and a plurality of tread plates 32B (second tread plates) installed between the rails 34A and 34B. The fixed base 3 is fixed to the floor surface. The plurality of treads 32A and 32B are arranged in the horizontal direction, respectively. Further, the tread 32A is, for example, a portion on which an operator rides when using the moving shelf 1B in the middle row, and serves as a work floor in a work space (first work space) in front of the moving shelf 1B. Further, the tread plate 32B is, for example, a portion on which an operator rides when using the fixed shelf 2 in the back row, and serves as a work floor in a work space (second work space) in front of the fixed shelf 2. The tread plates 32A and 32B are each divided and installed in the same number as the fixed shelves 2, and in the example shown in FIG. 17, three tread plates are installed.

The moving shelf 1B includes a trolley 11 movably mounted on the rails 34A and 34B, and a moving shelf main body 12B (storage) mounted and fixed on the trolley 11. The dolly 11 has the same configuration as the dolly 11 (see FIG. 6) according to the first embodiment. The movable shelf 1B is configured to be movable in the lateral direction (see FIG. 17) by a manual operation by an operator. The moving shelf 1A moves laterally above the tread 32A, and the moving shelf 1B moves laterally above the tread 32B.

FIG. 18 is a perspective view showing a schematic configuration of the fixed base 3. The fixed bases 3 are integrally formed in the front-rear direction, and the same number (three in this case) as the fixed shelves 2 are installed. The tread plates 32A and 32B are movably installed in the upward direction (first direction) and the downward direction (second direction) on the front side of the fixed base 3. The tread plate 32A has the same configuration as the tread plate 32 (see FIGS. 2 and 3) according to the first embodiment.

FIG. 19 is a diagram showing a specific configuration of the tread plate 32B. 19 (a) is a plan view of the tread plate 32B, and FIG. 19 (b) is a view taken along the arrow A (side view) of FIG. 19 (a). The tread plate 32B includes a tread plate main body 320, a spring 321 (second urging portion) (for example, a compression coil spring) provided on the front back surface of the tread plate main body 320, and a regulation portion 322 provided on the front back surface of the tread plate main body 320. And a rotating shaft portion 323 provided on the side surface of the rear end portion of the tread plate main body 320. One spring 321 is provided on the front side in the depth direction and near the center in the width direction of the tread plate main body 320, and one regulating portion 322 is provided on the front side of the spring 321 and near both ends in the width direction. One 323 is provided at the rear end in the depth direction and near both ends in the width direction of the tread plate main body 320. As shown in FIG. 19B, the regulating portion 322 includes a regulating portion side plate 322A extending in the second direction from the back surface of the tread plate main body 320, and a regulating portion bottom plate 322B extending forward from the regulating portion side plate 322A. It has. As shown in FIG. 18, the tread plate 32B is attached between the rails 34A and 34B after the pair of rails 34A and 34B are installed. One end (upper end) of the spring 321 is fixed to the back surface of the front side of the tread plate body 320 with screws or the like (see FIG. 19B), and the other end (lower end) of the spring 321 is on the intermediate frame 33 of the fixed base 3. It is abutted (see FIG. 18).

FIG. 20 is a view taken along the arrow B (side view) of FIG. 18, FIG. 20 (a) shows a state in which the worker is not on the tread 32B (second state), and FIG. 20 (b) shows the worker. Indicates a state (first state) on the tread 32B.

As shown in FIG. 20, the fixed base 3 includes a rail cover 31D that receives and fixes the rail 34A, and a rail cover 31C that receives and fixes the rail 34B. The rail cover 31C includes an opening 311C into which the rotating shaft portion 323 of the tread plate 32B is inserted. The rail cover 31D includes a bottom plate 311D on which the rail 34A is placed, and a side plate 312D that rises upward (first direction) from the bottom plate 311D.

As shown in FIG. 20A, in the tread plate 32B, the rotary shaft portion 323 is inserted into the opening 311C of the rail cover 31C, and the regulation portion bottom plate 322B of the regulation portion 322 is under the bottom plate 311D of the rail cover 31D. It is installed on the fixed base 3 so that it can be inserted. In the state shown in FIG. 20A, the spring 321 always urges the back surface of the tread 32B (tread body 320) in the first direction upward from the floor surface (second urging force) (arrows in the drawing). ) Is given. As a result, the regulating portion bottom plate 322B of the regulating portion 322 is in contact with the back surface of the bottom plate 311D. Further, in the state shown in FIG. 20A, the upper surface of the front end portion of the tread plate 32B is higher than the upper surface of the rear end portion of the tread plate 32B, the upper surfaces of the rails 34A and 34B, and the upper surface of the fixed base 3 by a height H1. A gap 324B is formed between the tread plate 32B and the side plate 312D of the rail cover 31D.

In the state shown in FIG. 20B, when the operator rides on the tread plate 32B, a force in the second direction that opposes the second urging force is applied to the upper surface of the tread plate 32B (tread plate main body 320). As a result, the spring 321 contracts, and the tread plate 32B rotates (moves) in the second direction toward the floor surface with the rotation shaft portion 323 as a fulcrum. The rotation of the tread plate 32B is stopped when the back surface (lower surface) of the front end portion abuts on the upper surface of the side plate 312D of the rail cover 31D. In the state shown in FIG. 20B, the upper surface of the front end portion of the tread plate 32B is at the same height as the upper surface of the rear end portion of the tread plate 32B, the upper surfaces of the rails 34A and 34B, and the upper surface of the fixed base 3, and the tread plate 32B The gap 324B (see FIG. 20A) between the rail cover 31D and the side plate 312D of the rail cover 31D becomes smaller (or disappears). When the operator gets off the tread 32B, the tread 32B is brought back into the state shown in FIG. 20 (a) by the second urging force in the first direction (arrow in FIG. 20 (a)) by the spring 321.

In this way, the tread plate 32B moves (rotates) by a distance corresponding to the gap 324B according to the operation of getting on and off the operator, and repeats the state of FIG. 20 (a) and the state of FIG. 20 (b). ..

FIG. 21 is an enlarged side view showing a state of the moving shelf system when the operator is not on the tread 32B (second state). The fixed base 3 shown in FIG. 21 shows the same state as in FIG. 20 (a). In addition, in FIG. 21, the right side surface of the moving shelf 1B (including the dolly 11) at the right end of FIG. 17 and the right side surface of the tread plate 32B (work floor) in the center of FIG. 17 are shown.

As shown in FIG. 21, when the operator is not on the tread 32B (work floor), the second portion 112B of the stopper 112 (second stopper) does not abut on the tread 32B, so that the gap 324B The moving shelf 1B can be moved in the horizontal direction (perpendicular to the paper surface of FIG. 21). The positional relationship between the second portion 112B of the stopper 112 and the left and right treads 32B of the treads 32B on the work floor is also the same.

FIG. 22 is an enlarged side view showing a state of the moving shelf system when the operator is on the tread 32B (first state). The fixed base 3 shown in FIG. 22 shows the same state as in FIG. 20 (b). In addition, in FIG. 22, similarly to FIG. 21, the right side surface of the moving shelf 1B (including the trolley 11) at the right end of FIG. 17 and the right side surface of the tread plate 32B (work floor) in the center of FIG. 17 are shown. ..

As shown in FIG. 22, when the operator gets on the tread 32B (work floor), the tread 32B rotates in the second direction by a distance (H1) corresponding to the gap 324B (see FIG. 20A). The back surface of the front end portion of the tread plate 32B abuts on the upper surface of the side plate 312D of the rail cover 31D and is fixed. As a result, the height from the floor surface to the center (vertical direction) of the front end portion of the tread 32B (work floor) and the height from the floor surface to the center (vertical direction) of the second portion 112B of the stopper 112 become substantially equal. , The side surface of the front end portion of the tread plate 32B (work floor) can come into contact with the side surface of the second portion 112B. For example, when the operator moves the moving shelf 1 to the left after getting on the tread 32 (see FIG. 12), the side surface of the front end portion of the tread 32B comes into contact with the side surface of the second portion 112B of the stopper 112. As a result, the movement of the moving shelf 1B to the left (work space) is suppressed (locked).

Here, the condition for the second portion 112B of the stopper 112 to be movable inside the gap 324B (condition for the moving shelf 1B to be movable) when the operator is not on the tread 32B is implemented. It is the same as the condition for the moving shelf 1 (moving shelf 1A) in the first form to be movable. Further, the condition (condition for locking the moving shelf 1B) for allowing the side surface of the front end portion of the tread plate 32B and the side surface of the second portion 112B to come into contact with each other when the operator is on the tread plate 32 is implemented. It is the same as the condition for locking the moving shelf 1 (moving shelf 1A) in the first embodiment.

The second lock device according to the second embodiment includes a tread plate 32B and a stopper 112 installed on the carriage 11. An operation example of the first lock device of the moving shelf 1A and the second locking device of the moving shelf 1B when the operator uses the moving shelf system will be described below with reference to FIGS. 23 and 24.

First, when a worker stores an article in, for example, a fixed shelf 2 in the back row (for example, the fixed shelf 2 in the center shown in FIG. 17), the worker laterally shifts the moving shelf 1A located in front of the fixed shelf 2 (front row). To secure the first work space (the central portion of the front row shown in FIG. 17). At this time, it is preferable to secure a work space having a frontage that is at least the width (horizontal length) of the tread 32A. As a result, the entire central tread 32A, which is the work floor, is exposed (see FIGS. 17 and 23 (a)). Next, the worker enters the first work space and gets on the tread 32A of the work floor (see FIG. 23 (b)). Then, the tread plate 32A of the work floor moves (rotates) downward (second direction) due to the weight of the operator, the engaging portion 326B of the latch mechanism 326 engages with the engaged portion 313, and the rail cover 31D It comes into contact with the upper surface of the side plate 312D and is in the state shown in FIGS. 11 and 23 (b). As a result, the side surface of the front end portion of the tread plate 32A can come into contact with the side surface of the second portion 112B of the stopper 112, so that the moving shelves 1A located on the left and right of the operator are locked and the first working space of the moving shelf 1A. Movement to is restricted (regulated).

Subsequently, the operator secures a second work space (the central portion of the middle row shown in FIG. 17) by laterally moving the moving shelf 1B located in front (middle row) of the target fixed shelf 2. At this time, it is preferable to secure a work space having a frontage that is at least the width (horizontal length) of the tread plate 32B or more. As a result, the entire central tread 32B, which is the work floor, is exposed (see FIGS. 17 and 23 (b)). Next, the operator moves from the tread 32A to the tread 32B (see FIG. 24 (a)). When the worker gets off the tread 32A, the engaging portion 326B is maintained in a state of being engaged with the engaged portion 313, so that the movement of the moving shelf 1A to the first work space is still suppressed (regulated). (See FIGS. 13 and 24 (a)). When the worker gets on the tread 32B of the work floor, the tread 32B of the work floor moves (rotates) downward (second direction) due to the weight of the worker and comes into contact with the upper surface of the side plate 312D of the rail cover 31D. Then, the state shown in FIGS. 22 and 24 (a) is obtained. As a result, the side surface of the front end portion of the tread plate 32B can come into contact with the side surface of the second portion 112B of the stopper 112, so that the moving shelves 1B located on the left and right of the operator are locked and the second working space of the moving shelf 1B. Movement to is restricted (regulated). The worker stores the article in the fixed shelf 2 using the secured first work space and the second work space.

Subsequently, when the work is completed, the worker moves from the tread plate 32B to the tread plate 32A again (see FIG. 24 (b)). Then, the tread plate 32B moves (rotates) upward (first direction) by the second urging force of the spring 321 and the regulating portion 322 comes into contact with the back surface of the bottom plate 311D, and the state shown in FIGS. 21 and 24 (b). become. As a result, the lock of the moving shelf 1B is released, and the moving shelf 1B can be moved to the left or right. Further, after the operator rides on the tread plate 32A to release the engagement state between the engaging portion 326B and the engaged portion 313 (latch release operation), for example, the operation portion 326A is stepped on with a foot, the tread plate When the player descends from 32A and exits from the first work space, the engaged state is released. As a result, the tread plate 32A moves (rotates) upward (first direction) due to the first urging force of the spring 321 and the regulating portion 322 abuts on the back surface of the bottom plate 311D, as shown in FIGS. 8 and 23 (a). Become in a state. As a result, the lock of the moving shelf 1A is released, and the moving shelf 1A can be moved to the left or right.

The operation of the second lock device of the moving shelf 1B is not limited to the above operation. For example, it is conceivable that the worker works in a second work space having a frontage smaller than the width (horizontal length) of the tread 32B. In this case, as shown in FIG. 25, the moving shelf 1B is caused by the frictional force of the contact surface between the tread plate 32B and the stopper 112, as in the locking device (first locking device) (see FIG. 15) according to the first embodiment. Left and right movement is suppressed.

According to the configuration of the lock device according to the second embodiment, for example, in the mobile shelf system composed of three rows (front row, middle row, back row) shown in FIG. 17, when the worker uses the shelves in the back row, the front row The moving shelves 1A in the front row and the moving shelves 1B in the middle row can be locked only by entering the first working space and the second working space in the middle row (riding the treads 32A and 32B). That is, according to the above configuration, the operator does not need to perform a special operation for locking the moving shelves 1A and 1B. Further, for example, even when the moving shelves 1A and 1B exist at positions in the middle of forming the first work space and the second work space smaller than the widths of the treads 32A and 32B as shown in FIG. 9, the moving shelves 1A and 1B can be locked. Therefore, according to the lock device (first lock device, second lock device) according to the second embodiment, the moving shelves 1A and 1B can be locked by a simple configuration and operation. Further, since the moving shelves 1A and 1B are locked without the worker being aware of it, the safety of the worker in the work space can be improved as compared with the conventional configuration.

Here, the second lock device according to the second embodiment may have a configuration that can be attached to an existing moving shelf system, similarly to the lock device (first lock device) according to the first embodiment. For example, according to the configuration of the tread 32B shown in FIG. 19, the existing tread can be easily replaced with the tread 32B shown in FIG. 19 by the method shown in FIG. Further, by configuring the stopper 112 shown in FIG. 6 as shown in FIG. 16, the stopper 112 shown in FIG. 16 can be attached to the existing moving shelf.

[Modification example]
The moving shelf system and the locking device according to the present invention are not limited to the configurations of the above embodiments, and may have the configurations (modifications) shown below.

For example, in the mobile shelf system composed of two rows (front row and back row) shown in FIG. 1, the lock device (see FIG. 3) according to the first embodiment is provided only at a location corresponding to one mobile shelf 1. You may. Specifically, for example, a spring 321, a regulating portion 322, a rotating shaft portion 323, and a latch mechanism 326 are provided only on the tread plate 32 at the end (left end or right end) of the plurality of treads 32, and the bogie at the end is provided. The stopper 112 may be provided only on the fixed base 3, and the engaged portion 313 may be provided only below the tread plate 32 at the end of the fixed base 3. As a result, the moving shelf 1 can be brought closer to the end and locked as a whole with only one locking device. Therefore, since the entire moving shelf 1 can be locked especially when the moving shelf system is not used, safety when not in use can be ensured. Further, a key may be used for the operation unit 326A of the latch mechanism 326, and the latch may be released by the key. As a result, the security of the articles stored in the mobile shelf system can be ensured.

Further, the operation unit 326A may be provided on the upper surface of the tread plate 32 as shown in FIG. 3, or may be provided on, for example, the front surface of the base 3. Further, the latch mechanism 326 may be configured such that once the operator gets on the tread 32, the latch is fixed (see FIG. 5), and when the operator gets on the tread 32 again, the latch is released. According to this configuration, the operator can lock or unlock the tread 32 simply by operating (depressing) the tread 32.

Further, the first lock device and the second lock device may be provided on the treads 32 arranged in the same row. That is, the tread plate 32A and the tread plate 32B may be adjacent to each other or arranged.

Further, in the locking device according to the first and second embodiments, when the operator is not on the tread plate 32 (32A, 32B) (or the latch is released), the upper surface of the front end portion of the tread plate 32 is behind the tread plate 32. The structure is such that the height H1 is higher than the upper surface of the end portion, the upper surface of the rail, and the upper surface of the fixed base 3 (see FIGS. 4 (a) and 20 (a)). Not limited. For example, in the locking device according to the present invention, when the operator is not on the tread 32, the upper surface of the front end of the tread 32 is the upper surface of the rear end of the tread 32, the upper surface of the rail, and the fixed base 3. When the operator is on the tread 32 (or locked), the upper surface of the front end of the tread 32 is the upper surface of the rear end of the tread 32, and the upper surface of the rail. And may be configured to be lower than the upper surface of the fixed base 3 by the height H1. As yet another configuration, when the operator is not on the tread 32 (or the latch is released), the upper surface of the front end of the tread 32 is the upper surface of the rear end of the tread 32, the upper surface of the rail, and the fixing. The height (H1) / 2 is higher than the upper surface of the base 3, and when the operator is on the tread 32 (or locked), the upper surface of the front end of the tread 32 is the rear end of the tread 32. It may be configured to be lower than the upper surface of the rail, the upper surface of the rail, and the upper surface of the fixed base 3 by the height (H1) / 2. When adopting these configurations, the length of the regulation portion side plate 322A of the regulation portion 322 and the length of the first portion 112A of the stopper 112 may be appropriately adjusted.

Further, in the lock device according to the first and second embodiments, the stopper 112 is provided in front of the carriage 11, and the tread plates 32 (32A, 32B) have the rear as a fulcrum (rotational axis) and the front in the first direction and the first. Although it is configured to rotate in two directions, the locking device according to the present invention is not limited to this. For example, the lock device according to the present invention has a configuration in which a stopper 112 is provided behind the carriage 11 and the tread plate 32 rotates in the first direction and the second direction with the front as a fulcrum (rotation axis). There may be. Further, the lock device according to the present invention may have a configuration in which the rotating shaft portion 323 is omitted and the tread plate 32 moves in the first direction and the second direction in parallel with the floor surface. In this case, one spring 321 may be provided at the center of the tread 32 (width direction and depth direction), or a plurality of springs 321 may be provided before and after the depth direction.

Further, in the lock device according to the first and second embodiments, the same number of tread plates 32 (32A, 32B) as the fixed shelves 2 are installed, but the number of tread plates 32 is not limited to this, for example, one in the lateral direction. May be installed only. Specifically, one tread plate 32 having the same length as the rail may be installed between the two rails. In this case, regardless of the position of the moving shelves 1 (1A, 1B), when the worker enters the work space and gets on the desired place of the tread 32, the lock device is in the state shown in FIGS. 15 and 25. The moving shelf 1 is locked. In this configuration, since the entire tread plate 32 moves in the second direction (downward), all the moving shelves 1 can be locked at the same time.

Further, in the operation of the lock device according to the first and second embodiments, the moving shelf 1 (1A, 1B) is locked when the operator gets on the tread 32 (32A, 32B). The method of locking is not limited to this, and the moving shelf 1 may be locked by placing luggage or the like on the tread plate 32, for example. As a result, the moving shelf 1 can be locked at all times when there is no worker.

Further, in the moving shelf system described above, two rails are provided on the fixed base 3, but the moving shelf system of the present invention is not limited to this. For example, in the mobile shelf system composed of two rows (front row and rear row) shown in FIG. 1, one rail on which two wheels installed on the carriage 11 travel is installed on the fixed base 3 and A roller may be installed on the upper part of the moving shelf 1, and a guide rail for guiding the roller may be installed on the upper part of the fixed shelf 2.

Further, the above-mentioned moving shelf system is a horizontal slide system, but the moving shelf system of the present invention is not limited to this. For example, the moving shelf system composed of two rows (front row and back row) shown in FIG. 1 may be a vertical slide system in which the moving shelf 1 moves in the depth direction of the moving shelf main body 12.

Further, in the moving shelf system, the fixed shelf main body 22 may be installed directly on the floor surface behind the moving shelf 1. Further, the fixed shelf 2 is not installed, and the moving shelf 1 may be installed along the wall surface.

Further, in the moving shelf system according to the second embodiment, the moving shelves are composed of two rows (front row and middle row), but the moving shelf system of the present invention is not limited to this. For example, in the moving shelf system, three or more rows of moving shelves may be installed. In this case, the first lock device (lock device according to the first embodiment) is mounted on the moving shelf in the front row, and the second lock device (lock device according to the second embodiment) is mounted on the moving shelf in the rear row. Alternatively, the second lock device (lock device according to the second embodiment) is mounted on the moving shelf in the last row, and the first lock device (lock device according to the first embodiment) is mounted on the moving shelf in the front row. It may be installed.

Further, in the mobile shelf system according to the second embodiment, the second lock device may have the configuration shown in FIGS. 26 and 27. FIG. 26 is a side view showing a state of the second lock device according to a modified example when the worker is not on the tread 32B (second state), and FIG. 27 is a side view showing the state of the second lock device when the worker is on the tread 32B. It is a side view which shows the state of the 2nd lock device which concerns on the modification of time (first state). The tread plate 32B of the second lock device according to the modified example includes a first spring 321A provided on the back surface of the front portion of the tread plate main body 320, a second spring 321B provided on the back surface of the rear portion of the tread plate main body 320, and a first spring. It is provided with a rotation shaft portion 325 provided between the spring 321A and the second spring 321B (for example, the center of the side surface of the tread plate 32B). Further, the stopper of the second lock device according to the modified example includes a front stopper 112 provided at the front portion of the carriage 11 and a rear stopper 115 provided at the rear portion of the carriage 11. The front stopper 112 and the rear stopper 115 include first portions 112A and 115A and second portions 112B and 115B, respectively.

The first spring 321A always applies an urging force (arrow in FIG. 26) to the back surface of the front portion of the tread plate 32B (tread plate main body 320), and the second spring 321B always gives an urging force (arrow in FIG. 26) to the rear portion of the tread plate 32B (tread plate main body 320). An urging force (arrow in FIG. 26) is given to the back surface of the. The rotary shaft portion 325 is fixed to the fixed base 3 so that the tread plate 32B can rotate in the first direction and the second direction. The rotating shaft portion 325 may be connected to the rotating shaft portion 325 of the adjacent tread plates 32B. As a result, when the worker is not on the tread 32B, as shown in FIG. 26, the front part and the rear part of the tread 32B are evenly urged, so that the tread 32B is parallel to the floor surface. The upper surfaces of the front and rear portions of the tread 32B are maintained at the same height as the upper surfaces of the rails 34A and 34B, and the moving shelf 1B can be moved in the lateral direction (perpendicular to the paper surface of FIG. 26).

On the other hand, when an operator enters the second work space and rides on the front portion of the tread plate 32B on the work floor in the state shown in FIG. 26, the tread plate 32B is placed according to the weight of the operator with the rotating shaft portion 325 as a fulcrum. The front portion moves downward (second direction), and the rear portion of the tread 32B moves upward (first direction) (rotates). As a result, as shown in FIG. 27, the front portion of the tread plate 32B sinks below the upper surfaces of the rails 34A and 34B, and the rear portion of the tread plate 32B projects upward above the upper surfaces of the rails 34A and 34B. As described above, the tread plate 32B of the second lock device according to the modified example has a so-called seesaw structure. As a result, as shown in FIG. 27, the rear side surface (side portion) of the tread plate 32B can come into contact with the side surface (side portion) of the second portion 115B of the rear stopper 115, so that the tread plate 32B rides on the tread plate 32B. The moving shelves 1B located on the left and right of the worker are locked, and the movement of the moving shelves 1B to the second work space side is suppressed. When the worker gets on the rear part of the tread plate 32B, the rear part of the tread plate 32B moves downward and the front part of the tread plate 32B moves upward, so that the side surface (side) of the front part of the tread plate 32B is moved upward. The portion) can come into contact with the side surface (side portion) of the second portion 112B of the front stopper 112, and the moving shelves 1B located on the left and right of the operator are locked.

Further, when the operator enters the second work space having a frontage smaller than the width (horizontal length) of the tread 32B and gets on the front part of the tread 32B, the upper surface of the rear part of the tread 32B Abuts on the lower surface of the second portion 115B of the rear stopper 115. As a result, the left and right movement of the moving shelf 1B is suppressed by the frictional force of the contact surface between the tread plate 32B and the rear stopper 115.

The second lock device according to the above modification has the first spring 321A and the second spring as long as the tread plate 32B is maintained in a state parallel to the floor surface when the operator is not on the tread plate 32B. Either one of 321B may be omitted, or both may be omitted. Further, if the front portion or the rear portion of the tread plate 32B can come into contact with the side portion of the carriage 11 when the operator is on the tread plate 32B, the front stopper 112 and the rear stopper 115 may be omitted.

As described above, the second lock device according to the second embodiment is characterized by having the following configurations, and includes each of the above-described forms and a form appropriately modified by those skilled in the art from each of the above-described forms. That is, when the second lock device includes a tread plate 32B on which the moving shelf 1B passes above and the operator rides on, and a downward (second direction) force is applied to the upper surface of the tread plate 32B in the second work space. In the (first state) (for example, when the worker gets on the tread 32B in the second work space), for example, the side portion of the tread 32B can come into contact with the moving shelf 1B, so that the first of the moving shelves 1B can be brought into contact with the moving shelf 1B. 2 When the movement to the work space is suppressed (locked) while the downward force is no longer applied to the upper surface of the tread 32B in the second work space (second state) (for example, the worker is in the second work space). When the tread plate 32B is dismounted from the tread plate 32B in the above case, for example, the tread plate 32B does not come into contact with the moving shelf 1B, so that the moving shelf 1B is unlocked and the moving shelf 1B can be moved to the second work space ( The moving shelf 1B can move above the tread 32B), and has a configuration. Thereby, the moving shelf 1B can be locked by a simple configuration and operation.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and there are also embodiments appropriately modified by those skilled in the art from each of the above embodiments without departing from the spirit of the present invention. Needless to say, it is included in the technical scope of the present invention.

1 Moving shelf, 1A Moving shelf (1st moving shelf), 1B Moving shelf (2nd moving shelf), 2 Fixed shelf, 3 Fixed base, 11 trolley, 12, 12A, 12B Moving shelf body, 21 Rear base, 22 Fixed Shelf body, 31A, 31B, 34A, 34B rail, 32 treads, 32A treads (first treads), 32B treads (second treads), 111 wheels, 112 stoppers (first stopper, second stopper), 112A (stoppers ) 1st part, 112B (stopper) 2nd part, 321 spring (1st urging part, 2nd urging part), 322 regulating part, 323 rotating shaft part, 324, 324A, 324B gap.

Claims (11)

A lock device for moving shelves with wheels running on rails.
The first tread plate on which the worker rides, which can move up and down as the first moving shelf passes above,
On the back surface of the first tread plate, a first urging portion that gives a first urging force in a first direction upward from the floor surface, and a first urging portion.
A fixing portion for fixing the vertical position of the first tread plate and
With
When a force in the second direction against the first urging force is applied to the upper surface of the first tread plate in the first work space and the first tread plate moves to a lower position, the side portion of the first tread plate is moved. The first moving shelf can be brought into contact with the first moving shelf, and the movement of the first moving shelf to the first work space is suppressed.
If the fixed state of the first tread is released while the first tread is fixed by the fixing portion at the lower position, the first tread moves in the first direction by the first urging force. By doing so, the first moving shelf can be moved to the first work space.
A moving shelf lock device that features this. When a force in the second direction is applied to the upper surface of the first tread plate in the first work space, the side portion moved to the lower position on the first tread plate is the side portion of the first moving shelf. Can be contacted with
When the fixed state of the first tread plate is released while the first tread plate is fixed at the lower position, the side portion of the first tread plate moves in the first direction, whereby the first tread plate is said. 1 The moving shelf can be moved to the first work space.
The moving shelf locking device according to claim 1. The fixed part is
A latch mechanism including an operating portion provided so as to project from the upper surface of the first tread plate in the first direction, and an engaging portion that operates in response to the operation of the operating portion.
With the engaged portion with which the engaging portion engages,
Have,
When a force in the second direction is applied to the upper surface of the first tread plate in the first work space, the engaging portion engages with the engaged portion, so that the first tread plate is lowered. Fixed in position,
When a force in the second direction is applied to the operating portion while the first tread plate is fixed at the lower position, the engaged state between the engaging portion and the engaged portion is released. By doing so, the fixed state of the first tread plate is released.
The moving shelf locking device according to claim 1 or 2. While the first tread plate is in the fixed state, the height from the floor surface to the upper surface of the first tread plate and the height from the floor surface to the upper surface of the rail are substantially the same.
The moving shelf locking device according to any one of claims 1 to 3, wherein the moving shelf is locked. The first urging force is applied to the front side of the first tread plate where the worker enters and exits, and the back surface of one of the rear sides opposite to the front side.
At the other end of the front side and the rear side of the first tread plate, the first tread plate is rotatably fixed in the first direction and the second direction.
The moving shelf locking device according to any one of claims 1 to 4, wherein the moving shelf is locked. The locking device further comprises a first stopper installed on a carriage provided with the wheels.
The first stopper includes a first portion extending from the bottom surface of the carriage toward the floor surface, and a second portion extending from the first portion in a direction intersecting the moving direction of the first moving shelf. , Equipped with
While the first tread plate is in the fixed state, the height from the floor surface to the first tread plate is substantially equal to the height from the floor surface to the second portion, and the side portion of the first tread plate is the first tread plate. While it is possible to contact two parts,
While the fixed state of the first tread plate is released, the height from the floor surface to the lower surface of the first tread plate is higher than the height from the floor surface to the second portion, and the first moving shelf The second portion can move between the floor surface and the first tread plate.
The moving shelf locking device according to any one of claims 1 to 5, wherein the moving shelf is locked. When a force in the second direction is applied to the upper surface of the first tread plate when the second portion exists between the floor surface and the first tread plate, the first tread plate is in the second direction. The back surface of the first tread plate comes into contact with the upper surface of the second portion, thereby suppressing the movement of the first moving shelf to the first work space.
The moving shelf locking device according to claim 6. The first stopper is detachably installed on the trolley with the first moving shelf installed on the rail.
The first tread plate is installed close to the rail with the first moving shelf installed on the rail.
The moving shelf locking device according to claim 6. A second tread plate on which an operator rides, which can move up and down as the second moving shelf passes above,
On the back surface of the second tread plate, a second urging portion that applies a second urging force in the first direction upward from the floor surface, and a second urging portion.
With more
During the first state in which the upper surface of the second tread plate in the second work space is subjected to a force in the second direction against the second urging force, the side portion of the second tread plate is the second moving shelf. The movement of the second moving shelf to the second work space is suppressed by being able to come into contact with the second working space.
During the second state in which the upper surface of the second tread plate in the second work space is not subjected to the force in the second direction, the second moving shelf can be moved to the second work space.
The moving shelf locking device according to any one of claims 1 to 8, wherein the moving shelf is locked. The first state is a state in which the worker is riding on the second tread in the second work space, and the second state is a state in which the worker is on the second tread in the second work space. Not in a state,
9. The moving shelf locking device according to claim 9. The second moving shelf is arranged in the back row of the first moving shelf.
The mobile shelf locking device according to claim 9 or 10.

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