JP2018196478A - Lock device for mobile rack - Google Patents

Abstract

To provide a lock device for a mobile rack, capable of locking the mobile rack with a simple structure and operation.SOLUTION: A lock device for a mobile rack 1 comprises: a tread 32 above which the mobile rack passes and on which a worker rides; and an energization part 321 on the back surface of the tread, the energization part for applying energization force in a first direction directed upwards from a floor surface. Movement of the mobile rack into a work space is disabled by a side part of the tread being capable of abutting on the mobile rack in a first state in which force in a second direction resisting the energization force is applied on the top surface of the tread in the work space; on the other hand, the movement of the mobile rack into the work space is enabled in a second state in which no force in the second direction is applied on the top surface of the tread in the work space.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a moving shelf locking device.

  2. Description of the Related Art Conventionally, a mobile shelf that efficiently stores a limited space in an office or the like and efficiently stores articles such as documents has been provided. The moving shelf is installed in front of a plurality of fixed shelves installed side by side in the horizontal direction, for example. When using the rear row fixed shelves, the worker moves the front row moving shelves in the horizontal direction and enters the work space formed thereby to perform work. Here, when 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 working space, the working space is narrowed and the worker contacts the moving shelf. There is a fear.

  Therefore, conventionally, a technique for suppressing (locking) the movement of the movable shelf has been proposed. For example, Patent Literature 1 discloses a moving shelf restricting device that restricts movement of a moving shelf. The said movement shelf control apparatus is provided in the base part arrange | positioned between a pair of guide rails. For example, when an operator steps on one end of a pedal part that constitutes the movable shelf regulating device in the work space, the other end of the pedal part protrudes upward from the upper surface of the base part and contacts the side surface of the movable shelf. It becomes possible. According to the above configuration, the operator can regulate the movement of the movable shelf by operating the movable shelf restricting device when entering the work space and performing work.

JP 2013-78427 A

  However, in the technique of the above-mentioned Patent Document 1, since the moving shelf regulating device has to be incorporated inside the base portion, the configuration of the entire moving shelf is complicated. Further, since the worker has to step on the pedal portion after entering the work space in order to lock the movable shelf, the operator is forced to perform a troublesome operation. Furthermore, it is conceivable that an operator forgets the operation of locking the movable shelf and performs an operation while consciously omitting the operation, and it is difficult to ensure safety.

  This invention is made | formed in view of the said situation, The objective is to provide the locking device which can lock a movement shelf by simple structure and operation.

  In order to solve the above-described problem, a movable shelf locking device according to the present invention is a movable shelf locking device having wheels that run on rails, and the movable shelf passes above and an operator rides. A force in a second direction that resists the urging force on the upper surface of the tread in a work space, comprising: a tread; and a urging portion that applies a urging force in a first direction upward from the floor to the back of the tread. During the first state in which the side of the tread is able to contact the movable shelf, the movement of the movable shelf to the work space is suppressed, while the side in the work space The movable shelf can be moved to the work space during the second state in which no force in the second direction is applied to the upper surface of the tread board.

  According to the above configuration, for example, when the operator enters the work space and gets on the tread, the side of the tread can be brought into contact with the movable shelf, so that the movable shelf can be locked, and the operator can get off the tread. By leaving the work space, the movable shelf is unlocked, and the movable shelf can move above the tread. Therefore, according to the lock device, the movable shelf can be locked with a simple configuration and operation.

  Here, in the movable shelf locking device according to the present invention, the first state is a state in which the worker is on the tread in the work space, and the second state is a state in which the worker is in the work space. It can be set as the state which is not on the tread board.

  In the movable shelf locking device according to the present invention, when a force in the second direction is applied to the upper surface of the tread in the work space, the tread is moved in the second direction, so that the side portion of the tread It can be set as the structure which can contact | abut to the side part of the said movement shelf.

  In the movable shelf locking device according to the present invention, the height from the floor surface to the top surface of the tread plate and the height from the floor surface to the top surface of the rail substantially coincide with each other during the first state. It is good.

  Further, in the movable shelf locking device according to the present invention, the urging force is given to the back side of one side of the front side of the tread plate where the operator enters and exits and the rear side opposite thereto, The other end of the front and rear sides may be fixed so that the treadle is rotatable in the first direction and the second direction.

  In the movable shelf locking device according to the present invention, the locking device further includes a stopper installed on the carriage provided with the wheels, and the stopper extends from the bottom surface of the carriage toward the floor surface. A first portion that is present, and a second portion that extends from the first portion in a direction that intersects the moving direction of the movable shelf, and during the first state, from the floor surface to the tread The height and the height from the floor surface to the second portion are substantially equal, and the side portion of the tread can abut against the second portion, while during the second state, from the floor surface to the second portion. The height to the lower surface of the tread is higher than the height from the floor to the second part, and the second part can move between the floor and the tread as the movable shelf moves. It is good also as a certain structure.

  Further, in the movable shelf locking device according to the present invention, when the second direction is present between the floor surface and the tread, and the second direction force is applied to the upper surface of the tread, It is good also as a structure which suppresses the movement to the said working space of the said movement shelf, when a tread moves to the said 2nd direction and the back surface of the said tread contacts the upper surface of the said 2nd part.

  Further, in the movable shelf locking device according to the present invention, the stopper is detachably installed on the carriage in a state where the movable shelf is installed on the rail, and the tread has the movable shelf on the rail. It may be installed in the vicinity of the rail in a state where it is installed on the rail.

  In order to solve the above-mentioned problem, the moving shelf locking device according to the present invention is a moving shelf locking device having wheels that run on rails. A step board for riding, and the step board includes a front part where an operator enters and exits, a rear part opposite to the front part, and a rotary shaft part provided between the front part and the rear part, When an operator gets on the front portion of the tread in the work space, the front portion rotates in the floor surface direction with the rotating shaft portion as a fulcrum and sunk below the upper surface of the rail. The rear portion of the tread plate rotates upward with respect to the rotation shaft portion as a fulcrum and protrudes upward from the upper surface of the rail, so that the side portion of the rear portion is placed on the movable shelf. By making contact possible, the work of the moving shelf When the operator gets down from the front part of the tread in the work space, the front part rotates upward with the rotating shaft part as a fulcrum, and the rail And the rear portion of the tread is rotated in the direction of the floor surface with the rotating shaft portion as a fulcrum to be the same height as the upper surface of the rail. It is possible to move to the work space.

  In order to solve the above-mentioned problem, the moving shelf locking device according to the present invention is a moving shelf locking device having wheels that run on rails. When a step board is provided and an operator rides on the step board in the work space, the side of the step board can come into contact with the moving shelf, thereby suppressing the movement of the moving shelf to the working space. On the other hand, when an operator gets off from the tread in the work space, the tread is not brought into contact with the movable shelf, so that the movable shelf can be moved to the working space. .

  With the movable shelf locking device according to the present invention, the movable shelf can be locked with a simple configuration and operation.

It is a perspective view which shows schematic structure of the movement shelf system which concerns on this embodiment. It is a perspective view which shows schematic structure of the fixed base in the said movement shelf system. It is a figure which shows the specific structure of the tread in the locking device concerning this embodiment, (a) is a top view of a tread, (b) is an A arrow directional view of (a). FIG. 3 is a view as viewed in the direction of arrow B in FIG. 2, (a) shows a state where the operator is not on the tread (second state), and (b) shows a state where the operator is on the tread (first state). Show. It is a figure which shows the specific structure of the trolley | bogie in the movable shelf which concerns on this embodiment, (a) is a top view of a trolley | bogie, (b) is a C arrow directional view of (a), (c) is It is D arrow line view of (a). In the said movement shelf system, it is a side view which shows a mode when an operator is not on the tread board (2nd state). It is the elements on larger scale of FIG. In the said movement shelf system, it is a figure which shows the mode in the middle of the movement shelf moving. In the said movement shelf system, it is a side view which shows a mode when an operator is on the tread board (1st state). FIG. 10 is a partially enlarged view of FIG. 9. In the said movement shelf system, it is a perspective view which shows a mode before an operator gets on a tread. In the said movement shelf system, it is a side view which shows another mode when an operator is on the tread board (1st state). It is the elements on larger scale of FIG. It is a perspective view which shows the other structure of the stopper in the said locking device. In the said movement shelf system, it is a side view which shows the mode of the locking device which concerns on the modification when an operator is not on the tread board (2nd state). In the said movement shelf system, it is a side view which shows the mode of the locking device which concerns on the modification when an operator is on the tread board (1st state).

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a movable shelf system according to the present embodiment. The movable shelf system is installed on a floor surface, a plurality of movable shelves 1 movably installed in a lateral direction (frontage direction), a plurality of fixed shelves 2 fixedly installed behind the plurality of movable shelves 1, and the floor surface. The fixed base 3 is provided. The mobile shelf system also includes a lock device that regulates the movement of the mobile shelf 1. Although the number of the movable shelves 1 and the fixed shelves 2 is not limited, the number of the movable shelves 1 is smaller than the number of the fixed shelves 2.

  The fixed base 3 includes a pair of front and rear rails 31A and 31B disposed under the movable shelf 1, and a plurality of treads 32 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 to each other along the horizontal direction shown in FIG. 1, and the plurality of treads 32 are arranged in the horizontal direction. Further, the tread 32 is a portion on which an operator rides when using the fixed shelf 2 in the back row, and serves as a work floor in the work space in front of the fixed shelf 2. The tread 32 is divided and installed by the same number as the fixed shelf 2, and in the example shown in FIG.

  The movable shelf 1 includes a carriage 11 that is movably placed on the rails 31 </ b> A and 31 </ b> B, and a movable shelf body 12 (storage) that is placed and fixed on the carriage 11. The carriage 11 includes four wheels 111 (see FIG. 5) that travel on the rails 31A and 31B. The movable shelf 1 is configured to be movable in the horizontal direction (see FIG. 1) by an operator's manual operation. The movable shelf 1 moves in the lateral direction above the tread 32.

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

  Although the movable shelf main body 12 and the fixed shelf main body 22 shown in FIG. 1 have shown the cabinet with a door, the kind of storage is not limited. Note that the movable shelf system shown in FIG. 1 shows a lateral slide system in which the movable shelf 1 moves in the width (frontage) direction of the movable shelf 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 are installed in the same number (three in this case) as the fixed shelves 2. The tread 32 is installed on the front side of the fixed base 3 so as to be movable upward (first direction) and downward (second direction). 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 board 32. 3 (a) is a plan view of the tread 32, and FIG. 3 (b) is a view (side view) taken along arrow A in FIG. 3 (a). The tread 32 includes a tread main body 320, a spring 321 (biasing portion) (for example, a compression coil spring) provided on the front rear surface of the tread main body 320, a regulating portion 322 provided on the front rear surface of the tread main body 320, And a rotary shaft portion 323 provided on the side surface of the rear end portion of the tread board main body 320. One spring 321 is provided on the front side in the depth direction of the tread plate body 320 and near the center in the width direction, and one restricting portion 322 is provided on the front side of the spring 321 and near both ends in the width direction. One 323 is provided near the rear end portion in the depth direction and near both end portions in the width direction of the tread board main body 320. As shown in FIG. 3B, the restricting portion 322 includes a restricting portion side plate 322A extending in the second direction from the back surface of the tread plate body 320, a restricting portion bottom plate 322B extending forward from the restricting portion side plate 322A, It has. As shown in FIG. 2, the tread 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 screwed and fixed to the front back surface of the tread plate main body 320 (see FIG. 3B), and the other end (lower end) of the spring 321 contacts the intermediate frame 33 of the fixed base 3. (See FIG. 2).

  4 is a view (side view) as viewed from the direction of arrow B in FIG. 2, FIG. 4 (a) shows a state where the operator is not on the tread 32 (second state), and FIG. 4 (b) shows the worker. Shows a state (first state) on the tread board 32.

  As shown in FIG. 4, the fixed base 3 further 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. 4A, the tread plate 32 has a rotating shaft portion 323 inserted into the opening 311C of the rail cover 31C, and a restricting portion bottom plate 322B of the restricting portion 322 below the bottom plate 311D of the rail cover 31D. It is installed on the fixed base 3 so as to be inserted. In the state shown in FIG. 4A, the spring 321 always applies an urging force (an arrow in the figure) to the rear surface of the tread 32 (tread main body 320) in the first direction upward from the floor surface. Thereby, the regulation part bottom plate 322B of the regulation part 322 is in contact with the back surface of the bottom plate 311D. In the state shown in FIG. 4A, the upper surface of the front end portion of the tread plate 32 is 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 by a height H1. A gap 324 is formed between the step board 32 and the side plate 312D of the rail cover 31D.

  In the state shown in FIG. 4B, when the operator gets on the tread 32, a force in the second direction against the urging force is applied to the upper surface of the tread 32 (the tread main body 320). As a result, the spring 321 contracts and the tread 32 rotates (moves) in the second direction toward the floor surface with the rotation shaft portion 323 as a fulcrum. The tread 32 stops rotating when the rear surface (lower surface) of the front end abuts against the upper surface of the side plate 312D of the rail cover 31D. In the state shown in FIG. 4B, the upper surface of the front end of the tread 32 is flush with the upper surface of the rear end of the tread 32, the upper surfaces of the rails 31 </ b> A and 31 </ b> B, and the upper surface of the fixed base 3. And the gap 324 (see FIG. 4A) between the rail cover 31D and the side plate 312D of the rail cover 31D is eliminated. When the worker descends from the tread board 32, the tread board 32 is again in the state shown in FIG. 4A due to the biasing force in the first direction by the spring 321 (the arrow in FIG. 4A).

  As described above, the tread 32 moves (rotates) by a distance corresponding to the gap 324 according to the operator getting on and off, and repeats the state of FIG. 4A and the state of FIG. 4B.

  FIG. 5 is a diagram illustrating a specific configuration of the carriage 11. 5 (a) is a plan view of the carriage 11, FIG. 5 (b) is a C arrow view (front view) of FIG. 5 (a), and FIG. 5 (c) is a view of D of FIG. 5 (a). It is an arrow view (side view). The cart 11 includes four wheels 111 arranged at four corners, a stopper 112 extending in the moving direction (lateral direction) of the cart 11, and four pieces attached to end portions of side plates extending in the depth direction. A buffer rubber 113. As shown in FIG. 5 (c), the stopper 112 has a first portion 112A extending from the bottom surface of the carriage 11 toward the floor surface (in the second direction), and the moving direction of the carriage 11 from the first portion 112A. And a second portion 112 </ b> B that extends rearward in the direction intersecting (here, the depth direction), and is fixed to a member constituting the carriage 11. In addition, the stopper 112 is arranged so that the tip of the second portion 112B is inserted into the gap 324 (see FIG. 4A) when the carriage 11 is placed on the rails 31A and 31B. It is fixed to the carriage 11 (see FIG. 6). A movable shelf main body 12 is placed on and fixed to the upper surface of the carriage 11.

  FIG. 6 is a side view showing the state of the movable shelf system when the worker is not on the tread board 32 (second state). The fixed base 3 shown in FIG. 6 shows the same state as FIG. FIG. 7 is a partially enlarged view of FIG. 6 and 7 show the right side surface of the movable shelf 1 (including the carriage 11) at the right end of FIG. 1 and the right side surface of the center tread 32 (work floor) in FIG.

  As shown in FIGS. 6 and 7, when the operator is not on the tread board 32 (work floor), the second portion 112B of the stopper 112 is not in contact with the tread board 32, so the gap 324 (FIG. 7), and the movable shelf 1 can be moved in the lateral direction (perpendicular to the paper surface of FIGS. 6 and 7). The positional relationship between the second portion 112B of the stopper 112 and the left and right tread plates 32 of the work floor tread 32 is the same. FIG. 8 shows a state where the movable shelf 1 is moving above the tread 32 on the work floor. As shown in FIG. 8, when the operator applies a force in the lateral direction to the movable shelf 1, the movable shelf 1 moves in the lateral direction while the second portion 112 </ b> B of the stopper 112 moves in the gap 324. In addition, as shown in FIG. 6, the cart 11 may be provided with a fall prevention metal fitting 114 that prevents the movable shelf 1 from tipping forward.

  FIG. 9 is a side view showing a state of the movable shelf system when the worker is on the tread board 32 (first state). The fixed base 3 shown in FIG. 9 shows the same state as FIG. FIG. 10 is a partially enlarged view of FIG. 9 and 10, as in FIGS. 6 and 7, the right side of the rightmost movable shelf 1 (including the carriage 11) in FIG. 1 and the right side of the center tread 32 (work floor) in FIG. 1. Shows the surface.

  As shown in FIGS. 9 and 10, when an operator gets on the tread 32 (work floor), the tread 32 is moved in the second direction by a distance (H1) corresponding to the gap 324 (see FIG. 4A). By rotating, the rear surface of the front end portion of the tread plate 32 is fixed in contact with the upper surface of the side plate 312D of the rail cover 31D. Thereby, the height from the floor surface to the center (vertical direction) of the front end 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 32 (work floor) can come into contact with the side surface of the second portion 112B. For example, in the state illustrated in FIG. 11, when the operator moves the movable shelf 1 to the left after riding on the tread 32, the side surface of the front end of the tread 32 contacts the side of the second portion 112 </ b> B of the stopper 112. Touch. Thereby, the movement to the left direction (work space) of the movement shelf 1 is suppressed (locked). In FIG. 11, for convenience of explanation, the tread 32 directly below the movable shelf 1 is omitted.

  Here, the condition for allowing the second portion 112B of the stopper 112 to move within the gap 324 when the operator is not on the tread 32 (condition for allowing the movable shelf 1 to move) is, for example, When the force in the second direction is not applied to the upper surface of the tread 32 (when the operator is not on the tread 32), the height from the floor surface to the center of the second portion 112B of the stopper 112 is the floor. It is higher than the height from the surface to the upper surface of the side plate 312D of the rail cover 31D 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). In other words, the second portion 112 </ b> B of the stopper 112 only needs to be within the gap 324. On the other hand, the condition for allowing the side surface of the front end portion of the tread 32 and the side surface of the second portion 112B to come into contact with each other when the operator is on the tread 32 (condition for locking the movable shelf 1) is: For example, when a force in the second direction is applied to the upper surface of the tread 32 (when the operator is on the tread 32), the height from the floor to the center of the second portion 112B of the stopper 112 is: It 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. In other words, when viewed from the side surface (see FIG. 10), the distal end portion of the second portion 112 </ b> B of the stopper 112 only needs to overlap the side surface of the front end portion of the tread plate 32. What is necessary is just to set suitably the shape and external dimension of the tread 32 and the stopper 112 in the range which satisfy | fills said each condition. When the movable shelf 1 is locked, the side surfaces of 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, or a part of each side surface may be partially You may contact. That is, 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 (including the side surface and part of the side surface).

  The locking device according to the present embodiment includes a tread 32 and a stopper 112 installed on the carriage 11. The operation of the locking device for the movable shelf 1 when the worker uses the movable shelf system will be described below.

  First, for example, when an article is stored in the fixed shelf 2 in the rear row (for example, the central fixed shelf 2 shown in FIG. 1), the worker moves the movable shelf 1 positioned in front of the fixed shelf 2 in the horizontal direction. A working space (a front central portion shown in FIG. 1) is secured. At this time, it is preferable to secure a work space having a frontage that is at least equal to the width (lateral length) of the tread plate 32. Thereby, the whole center tread 32 used as a work floor will be in the state exposed (refer FIG. 1). Next, the operator enters the work space and gets on the tread 32 on the work floor. Then, the tread 32 on the work floor moves (rotates) downward (in the second direction) due to the weight of the operator and comes into contact with the upper surface of the side plate 312D of the rail cover 31D (see FIG. 4B). The state shown in FIG. 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 movable shelf 1 positioned on the left and right of the operator is locked, and the movable shelf 1 is moved to the work space. Movement is suppressed (regulated). The worker stores articles on the fixed shelf 2 in the secured work space. Next, when the work is finished, the worker gets off the tread board 32 and leaves the work space. Then, the tread plate 32 moves (rotates) upward (first direction) by the biasing force of the spring 321, and the restricting portion 322 comes into contact with the back surface of the bottom plate 311 </ b> D (see FIG. 4A), and FIGS. 6 and 7. It will be in the state shown in. Thereby, the lock | rock of the movement shelf 1 located in a worker's right and left is cancelled | released, and the movement to right and left is attained.

  The operation of the lock device of the movable shelf 1 is not limited to the above operation. For example, the worker may work in a work space having a frontage smaller than the width (lateral length) of the tread 32. In this case, as shown in FIG. 8, a part of one tread 32 serving as a work floor is covered with the movable shelf 1, and the second portion 112 </ b> B of the stopper 112 is disposed in the gap 324 (FIG. (See)). In this state, when an operator enters the work space and gets on the tread 32 (work floor), the tread 32 moves (rotates) downward (second direction) due to the weight of the operator, and the front end of the tread 32 12 comes into contact with the upper surface of the second portion 112B of the stopper 112, resulting in the state shown in FIG. FIG. 13 is a partially enlarged view of FIG. In the state shown in FIGS. 12 and 13, a force according to the weight of the operator is always applied to the upper surface of the second portion 112 </ b> B of the stopper 112. Thereby, the right and left movement of the movable shelf 1 is suppressed by the frictional force of the contact surface between the tread board 32 and the stopper 112. When the work is finished and the worker gets off the tread 32, the tread 32 moves (rotates) upward (first direction) by the biasing force of the spring 321, and the restricting portion 322 comes into contact with the back surface of the bottom plate 311D (see FIG. 4 (a)), the state (second state) shown in FIGS. Thereby, the lock | rock of the movement shelf 1 located in a worker's right and left is cancelled | released, and the movement to right and left is attained.

  According to the configuration of the locking device according to the present embodiment, for example, the movable shelf 1 can be locked or unlocked simply by an operator entering and leaving the work space. That is, according to the above configuration, the operator does not need to perform a special operation for locking and releasing the movable shelf 1. Regardless of the position where the movable shelf 1 exists, the movable shelf 1 can be locked when the worker enters the work space. For example, the movable shelf 1 can be locked even when the movable shelf 1 exists at a midway position where a work space smaller than the width of the tread 32 is formed as shown in FIG. Therefore, according to the locking device according to the present embodiment, the movable shelf 1 can be locked with a simple configuration and operation. In addition, since the movable shelf 1 is locked without the operator being aware of it, the safety of the worker in the work space can be improved as compared with the conventional configuration.

  The movable shelf system and the lock device according to the present invention are not limited to the above-described configuration, and may have the following configuration.

  For example, the locking device according to the present invention may have a configuration that can be attached to an existing mobile shelf system. For example, according to the configuration of the tread 32 shown in FIG. 3, the existing tread can be easily replaced with the tread 32 shown in FIG. 3 by the method shown in FIG. Further, the stopper 112 shown in FIG. 5 is configured as shown in FIG. 14, so that the stopper 112 shown in FIG. 14 can be attached to an existing moving shelf. The stopper 112 shown in FIG. 14 includes a stopper side plate 112C that contacts the side surface of the carriage 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 carriage 11. 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 are provided. . The first part 112A and the second part 112B shown in FIG. 14 have the same functions as the first part 112A and the second part 112B shown in FIG. According to the above configuration, the existing moving shelf can be locked with a simple configuration and operation by attaching the locking device (tread and stopper) to the existing moving shelf system in a state where the moving shelf is installed on the rail. Is possible.

  In the above-described locking device, when the operator is not on the tread 32 (second state), 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 surfaces of the rails 31A and 31B. And a configuration (see FIG. 4A) that is higher than the upper surface of the fixed base 3 by a height H1, but the locking device according to the present invention is not limited to this. For example, when the locking device according to the present invention is in the second state, the upper surface of the front end portion of the tread plate 32 is the same 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. When the height is high and the operator is riding on the tread 32 (first state), 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 surfaces of the rails 31A and 31B, and You may comprise so that only height H1 may become lower than the upper surface of the fixed base 3. FIG. As another configuration, in the second state, the upper surface of the front end portion of the tread plate 32 is 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 (H1). The height of the front end portion of the tread plate 32 is 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 in the first state (H1). You may comprise so that it may become low only / 2. In addition, when adopting these configurations, the length of the restriction portion side plate 322A of the restriction portion 322 and the length of the first portion 112A of the stopper 112 may be adjusted as appropriate.

  In the above-described locking device, the stopper 112 is provided in front of the carriage 11, and the tread 32 rotates forward in the first direction and the second direction with the rear as a fulcrum (rotating shaft) (see FIGS. 6 and 6). However, the locking device according to the present invention is not limited to this. For example, the locking device according to the present invention has a configuration in which the stopper 112 is provided behind the carriage 11 and the tread 32 rotates backward in the first direction and the second direction with the front as a fulcrum (rotating shaft). There may be. Further, the lock device according to the present invention may be configured such that the rotation shaft portion 323 is omitted and the tread 32 moves in parallel with the floor surface in the first direction and the second direction. In this case, one spring 321 may be provided at the center (width direction and depth direction) of the tread board 32, or a plurality of springs 321 may be provided before and after the depth direction.

  In the locking device described above, the same number of treads 32 as the fixed shelves 2 are installed, but the number of treads 32 is not limited to this, and may be one, for example. Specifically, one tread 32 having the same length as the rails 31A and 31B may be installed between the rails 31A and 31B. In this case, regardless of the position of the movable shelf 1, when the operator enters the working space and gets on the desired place of the tread 32, the locking device is in the state shown in FIGS. 12 and 13 and the movable shelf 1 is locked. Is done. In this configuration, since the entire tread plate 32 moves in the second direction (downward), all the movable shelves 1 can be locked simultaneously.

  Further, in the operation of the locking device described above, an example in which the movable shelf 1 is locked when an operator gets on the tread 32 is shown. However, the method of locking the movable shelf 1 is not limited to this. The movable shelf 1 may be locked by placing luggage or the like on it. Thereby, when there is no worker, the movable shelf 1 can be always locked.

  Moreover, although the movable shelf system mentioned above has the movable shelf 1 installed in the front row among the front and rear two rows and the fixed shelf 2 installed in the rear row, the movable shelf system of the present invention is not limited to this. For example, the movable shelf system is configured by three rows, a front row, a middle row, and a rear row, and the movable shelf 1 may be installed in the front row and the middle row, and the fixed shelf 2 may be installed in the rear row. In this case, the locking device of the present invention is installed on the movable shelf 1 in the middle row and the front row.

  Moreover, in the moving shelf system mentioned above, although the two rails are provided in the fixed base 3, the moving shelf system of this invention is not limited to this. For example, in the movable shelf system according to the present invention, one rail on which two wheels installed on the carriage 11 travel is installed on the fixed base 3, and a roller is installed on the upper portion of the movable shelf 1, A guide rail for guiding the roller may be installed on the upper part of the fixed shelf 2.

  Moreover, although the moving shelf system mentioned above is a horizontal slide system, the moving shelf system of this invention is not limited to this. For example, the movable shelf system may be a vertical slide method in which the movable shelf 1 moves in the depth direction of the movable shelf main body 12.

  In the mobile shelf system, the fixed shelf body 22 may be installed directly on the floor surface behind the mobile shelf 1. Moreover, the fixed shelf 2 is not installed, but the movable shelf 1 may be installed along the wall surface.

  Further, the lock device according to the present invention may have the configuration (modified example) shown in FIGS. 15 and 16. FIG. 15 is a side view showing a state of the locking device according to the modified example when the operator is not on the tread 32 (second state), and FIG. 16 is when the operator is on the tread 32 ( It is a side view which shows the mode of the locking device which concerns on the modification of a 1st state. The tread 32 of the locking device according to the modification includes a first spring 321A provided on the back of the front part of the tread board main body 320, a second spring 321B provided on the back of the rear of the tread board main body 320, and a first spring 321A. And a rotation shaft portion 325 provided between the second springs 321B (for example, the center of the side surface of the tread plate 32). The stopper of the locking device according to the modification includes a first stopper 112 provided at the front portion of the carriage 11 and a second stopper 115 provided at the rear portion of the carriage 11. The first stopper 112 and the second stopper 115 include first portions 112A and 115A and second portions 112B and 115B, respectively.

  The first spring 321A always applies a biasing force (arrow in the figure) to the back surface of the front portion of the tread 32 (the tread main body 320), and the second spring 321B always has a rear portion of the tread 32 (the tread main body 320). A biasing force (arrow in the figure) is given to the back surface. The rotary shaft portion 325 is fixed to the fixed base 3 so that the tread 32 can rotate in the first direction and the second direction. In addition, the rotating shaft part 325 may be connected to the rotating shaft part of the adjacent step board 325. Thereby, when the worker is not on the tread 32, as shown in FIG. 15, since the urging force is equally applied to the front part and the rear part of the tread 32, the tread 32 is in a state parallel to the floor surface. The upper surfaces of the front and rear portions of the tread plate 32 are maintained at the same height as the upper surfaces of the rails 31A and 31B, and the movable shelf 1 can move in the lateral direction (perpendicular to the paper surface of FIG. 15).

  On the other hand, when the operator enters the work space and rides on the front part of the tread 32 on the work floor in the state shown in FIG. 15, the front part of the tread 32 is determined by the weight of the operator with the rotary shaft 325 as a fulcrum. Moves (rotates) downward (second direction), and the rear part of the tread 32 moves (rotates) upward (first direction). Accordingly, as shown in FIG. 16, the front portion of the tread plate 32 sunk below the upper surfaces of the rails 31A and 31B, and the rear portion of the tread plate 32 protrudes above the upper surfaces of the rails 31A and 31B. Thus, the tread 32 of the lock device according to the modification has a so-called seesaw structure. Accordingly, as shown in FIG. 16, the side surface (side portion) of the rear portion of the tread plate 32 can come into contact with the side surface (side portion) of the second portion 115 </ b> B of the second stopper 115. The movable shelves 1 positioned on the left and right sides of the worker who is engaged are locked, and the movement of the movable shelves 1 toward the work space is suppressed. In addition, when an operator gets on the rear part of the tread 32, the rear part of the tread 32 moves downward and the front part of the tread 32 moves upward. Part) can be brought into contact with the side surface (side part) of the second portion 112B of the first stopper 112, and the movable shelf 1 positioned on the left and right sides of the operator is locked.

  In addition, when an operator enters a work space having a frontage that is smaller than the width (lateral length) of the tread 32 and rides on the front of the tread 32, the upper surface of the rear of the tread 32 is The second stopper 115 contacts the lower surface of the second portion 115B. Thereby, the right and left movement of the movable shelf 1 is suppressed by the frictional force of the contact surface between the tread 32 and the second stopper 115.

  Note that the lock device according to the above modified example has a configuration in which the first spring 321 </ b> A and the second spring 321 </ b> B have a configuration in which the tread 32 is maintained in a state parallel to the floor surface when the operator is not on the tread 32. Either may be omitted, or both may be omitted. Further, when the operator is on the tread 32, the first stopper 112 and the second stopper 115 may be omitted when the front or rear of the tread 32 can come into contact with the side of the carriage 11. .

  As described above, the lock device according to the present invention is characterized by having the following configuration, and includes the modes described above and modes appropriately modified by those skilled in the art. That is, the locking device according to the present invention includes a step board 32 on which the movable shelf 1 passes and an operator rides, and a downward (second direction) force is applied to the upper surface of the step board 32 in the work space. (First state) (for example, when an operator rides on the tread 32 in the work space), for example, when the side portion of the tread 32 can come into contact with the movable shelf 1 (FIGS. 10, 13, and FIG. 16), when the movement of the movable shelf 1 to the work space is suppressed (locked), but no downward force is applied to the upper surface of the tread 32 in the work space (second state) (for example, an operator , When the tread 32 is not in contact with the movable shelf 1 (see FIGS. 6 and 15), the movable shelf 1 is unlocked, and the work of the movable shelf 1 is performed. Allows movement to space That (movable shelf 1 is movable upward of the treadle 32), and a configuration. Thereby, a movement shelf can be locked by simple structure and operation.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to said each embodiment, The form suitably changed by those skilled in the art from said each embodiment within the range which does not deviate from the meaning of this invention. Needless to say, it is included in the technical scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 Moving shelf, 2 Fixed shelf, 3 Fixed base, 11 dolly, 12 Moving shelf main body, 21 Rear base, 22 Fixed shelf main body, 31A, 31B rail, 32 Footboard, 111 wheel, 112 stopper, 112A (stopper) 1st Part, 112B second part (of stopper), 321 spring (biasing part), 322 regulating part, 323 rotating shaft part, 324 gap.

Claims (10)

A locking device for a moving shelf having wheels that run on rails,
A step board on which an operator rides as the moving shelf passes above,
An urging portion for applying an urging force in a first direction upward from the floor surface to the back surface of the tread;
With
During the first state in which a force in the second direction against the urging force is applied to the upper surface of the tread in the work space, the side of the tread can be brought into contact with the movable shelf, While movement of the moving shelf to the work space is suppressed,
During the second state in which the force in the second direction is not applied to the upper surface of the tread in the work space, the movable shelf can be moved to the work space.
A movable shelf lock device. The first state is a state in which the worker is riding on the tread in the work space, and the second state is a state in which the worker is not on the tread in the work space.
The apparatus for locking a movable shelf according to claim 1. When a force in the second direction is applied to the upper surface of the tread in the work space, the side of the tread can come into contact with the side of the movable shelf by moving the tread in the second direction. Become,
3. The moving shelf locking device according to claim 1, wherein the moving shelf is locked. During the first state, the height from the floor surface to the top surface of the tread is substantially the same as the height from the floor surface to the top surface of the rail.
The moving shelf locking device according to any one of claims 1 to 3, wherein: The biasing force is given to the back side of the front side of the tread board where the operator enters and exits, and the back side which is the opposite side,
The other end of the front and rear sides of the tread is fixed so that the tread can rotate in the first direction and the second direction.
The locking device for a movable shelf according to any one of claims 1 to 4, wherein: The locking device further includes a stopper installed on a carriage provided with the wheels,
The 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 crossing the moving direction of the movable shelf,
During the first state, the height from the floor surface to the tread plate is substantially equal to the height from the floor surface to the second portion, and the side portion of the tread plate can contact the second portion. While
During the second state, the height from the floor surface to the lower surface of the tread is higher than the height from the floor surface to the second portion, and the second portion is moved along with the movement of the movable shelf. Movable between the floor and the tread board,
The locking device for a movable shelf according to any one of claims 1 to 5, wherein: When the second portion is present between the floor surface and the tread, and when a force in the second direction is applied to the upper surface of the tread, the tread moves in the second direction and the tread Suppressing the movement of the movable shelf to the work space by the back surface of the
The moving shelf locking device according to claim 6. The stopper is detachably installed on the carriage in a state where the movable shelf is installed on the rail,
The tread is installed in proximity to the rail, with the movable shelf installed on the rail.
The moving shelf locking device according to claim 6. A locking device for a moving shelf having wheels that run on rails,
A step board on which an operator rides as the moving shelf passes above,
With
The tread includes a front part where an operator enters and exits, a rear part opposite to the front part, and a rotary shaft part provided between the front part and the rear part,
When an operator gets on the front portion of the tread in the work space, the front portion rotates in the floor surface direction with the rotating shaft portion as a fulcrum and sunk below the upper surface of the rail. The rear portion of the tread plate rotates upward with respect to the rotation shaft portion as a fulcrum and protrudes upward from the upper surface of the rail, so that the side portion of the rear portion is placed on the movable shelf. While being able to contact, the movement of the movable shelf to the work space is suppressed,
When an operator descends from the front portion of the tread board in the work space, the front portion rotates in the upward direction with the rotating shaft portion as a fulcrum and becomes the same height as the upper surface of the rail, The rear portion of the tread plate rotates in the floor direction with the rotating shaft portion as a fulcrum, and becomes the same height as the upper surface of the rail, so that the movable shelf can be moved to the work space. ,
A movable shelf lock device. A locking device for a moving shelf having wheels that run on rails,
The moving shelf passes above and includes a step board on which an operator rides,
When an operator rides on the tread in the work space, the side of the tread can come into contact with the movable shelf, thereby suppressing the movement of the movable shelf to the working space,
When an operator gets off the tread in the work space, the tread is not brought into contact with the movable shelf, so that the movable shelf can be moved to the working space.
A movable shelf lock device.

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