JP3723908B2 - Transportation trolley floor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor plate of a transport carriage that can fold a bottom plate.
[0002]
[Prior art]
Conventionally, when the carriage is not used, the claw that can be engaged with and disengaged from the floor board is used so that the floor board can be folded by rotating the floor board in the vertical direction so that the carriage can be folded. Protruding protrusions were provided.
[0003]
[Problems to be solved by the invention]
In the prior art, since the floor plate engagement / disengagement work and the floor board rotation work are separated, there is a problem that the work of folding or opening the carriage becomes complicated. Also, usually, the nails and protrusions need to be installed in at least two places, one on each side of the floorboard for balance, and the two places must be operated, which further complicates the work. .
[0004]
[Means for Solving the Problems]
However, in the present invention, the guide protrusion that can be fitted into the through hole of the floor board is provided on the movable floor plate, and the locking piece that can be engaged with and disengaged from the locking edge of the through hole is provided in parallel with the guide protrusion. Solved.
[0005]
That is, the present invention comprises two floor boards with casters and a moving floor board installed between the floor boards, and one floor board and one side of the moving floor board are rotatably connected, and the other floor board is connected. In a floor plate for a carriage configured such that the substrate and the other side of the movable floor plate can be freely engaged and disengaged, two through holes having locking edges are formed in the other floor substrate, and the bottom surface of the movable floor plate is formed. Te, at a position corresponding to the through hole, with respectively projecting guide projections which can be fitted into the through hole, the guide protrusion in parallel to, be fitted in the through hole and engaging that can be engaged with the engaging Tomeen It is the floor board of the trolley | bogie for transportation characterized by providing a piece and making this both locking pieces interlock | cooperate.
[0006]
Further, it is a floor plate for a transportation carriage characterized in that the guide protrusion is composed of two parallel protruding pieces having a predetermined gap, the protruding piece is tapered, and a locking piece is inserted into the gap. . Further, each engaging pieces corresponding to the through-holes connected by a rectangular rod, the angular rod, together with the locking piece is urged in a direction to be engaged with the locking edge, moving the one end of the angle rod It is a floor board of a transporting carriage characterized in that a gripping part is formed on the part by projecting to the outside of the floor board , and the gripping part is urged so as to be accommodated in the moving floor board .
[0007]
Embodiment
A moving floor board is installed between two floor boards provided with casters at the corners, one side of the moving floor board is fixed to one moving floor board, and the other side is freely engageable with the other floor board. Two through holes having locking edges are drilled in parallel on the other floor substrate. Guide protrusions that can be fitted into the through holes are respectively provided on the lower surface of the movable floor plate at positions corresponding to the through holes. The guide protrusion is composed of two parallel tapered protrusion pieces and a locking piece provided therebetween. The locking piece can be inserted into the through hole and can be engaged with and disengaged from the locking edge. Both locking pieces constitute a floor plate of the carriage for transportation by interlocking with a square rod formed by connecting locking portions located outside the movable floor plate.
[0008]
[Action]
Since the guide protrusion that can be fitted into the through hole of the floor board and the locking piece to be locked to the through hole are provided in parallel on the moving floor board, and the locking piece is interlocked, the locking edge of the through hole is locked. Since the locking with the piece is guided, the locking piece can be reliably locked and unlocked with the locking edge by one operation. In addition, since the locking piece is urged in the locking direction to the locking edge, the locking state is maintained and the locking is not released, and when the movable floor board is rotated from the folded state to the used state, the locking piece is locked. If the piece comes into contact with the through hole, the locked state can be easily secured. Since the gripping portion is urged so as to be accommodated in the movable floor board , the gripping portion does not interfere with the use of the transport carriage when the gripping portion is not operated.
[0009]
[Example 1]
Embodiments of the present invention will be described with reference to the drawings. This embodiment shows an example in which the present invention is applied to a transport carriage that accommodates and transports mails and the like.
[0010]
The movable floor board 3 is installed between the floor boards 1 and 2 provided with the casters 18 and 18 at the corners, the rear end 4a of the movable floor board 3 is rotatably attached to the floor board 2, and the front end 4 is attached. The floor substrate 1 is detachable (the detachment mechanism will be described later).
[0011]
Next, the front fence 7 and the rear fence 8 are erected and fixed on the floor substrates 1 and 2, respectively. Further, a side fence 9 is attached between one side 7 a and 8 a of the front fence 7 and the rear fence 8. The side fence 9 is rotatable around the front fence 7 and the rear fence 8 and longitudinal axes 11 and 12, respectively, and the center of the side fence 9 is rotated inward by a vertical axis 10. Refractable.
[0012]
Further, the door 13 is attached between the other side 7b, 8b of the front fence 7 and the rear fence 8. The door 13 is divided into a door piece 14 on the front fence 7 side and a door piece 15 on the rear fence 8 side. The door pieces 14 and 15 are respectively arranged around the longitudinal axes 16 and 17 of the front and rear fences 7 and 8, respectively. It can be turned. Further, the door piece 14 is divided into upper and lower door pieces 14a and 14b, and the door piece 15 is similarly divided into door pieces 15a and 15b, which can be independently rotated around the vertical axes 16 and 17 (FIG. 1). To FIG. 3).
[0013]
The floor substrate 1 is formed with substantially square through holes 20 and 20 in a portion where the movable floor plate 2 is placed (FIG. 7).
[0014]
The engagement / disengagement mechanism, that is, the movable floor plate 3 in the above, has the following structure. Guide protrusions 21 and 21 including protrusion pieces 22 and 22 each having a predetermined gap that can be fitted into the through holes 20 and 20 are provided on the lower surface 6 of the movable floor plate 3. A locking piece 24 having a claw 25 that can be locked to the locking edge 20a of the through hole 20 is inserted into the gap 23 between the protruding pieces 22 and 22 (FIGS. 8A and 8B).
[0015]
A rectangular rod 26 along the edge of the front side 4 of the movable floor board 3 is fixed to the locking pieces 24, 24 through. The square rod 26 is attached to the movable floor plate 3 so as to be rotatable along an axis. Further, the projecting pieces 22 and 22 are tapered to form inclined slopes 22a and 22a (FIGS. 8A and 8B).
[0016]
One side 27 of the square pipe 28 is fitted on one side 27 of the square rod 26 so as to be slidable in the axial direction. Further, one side 31 of the operating rod 30 is connected to the other side 29 a of the square pipe 28, and the other side 31 a of the operating rod 30 passes through the frame 33 on the other side 5 a of the movable floor plate 3. Further, the end portion of the other side 31a of the operating rod 30 is bent to form a grip portion 32 (FIG. 6).
[0017]
Further, a spring 35 for biasing the square pipe 28 toward the guide projection 21 is interposed between the edge of the other side 29 a of the square pipe 28 and the frame 33. Further, on the other side 27a of the square rod 26, a spring 38 for biasing the square rod 26 so as to rotate in the direction of the arrow 36 in FIG. 5B is interposed (FIG. 6). The square rod 26 is fixedly provided with a stopper 39 that restricts the square rod 26 from rotating in the direction indicated by the arrow 37 in FIG.
[0018]
As described above, the transport carriage 42 is configured (FIGS. 1 to 3). The floor boards 1 and 2 and the movable floor board 3 constitute a floor board 40 (FIG. 5).
[0019]
Next, the operation of the floor board 40 of the present invention, that is, the use of the transport carriage 42 will be described based on the embodiment.
[0020]
(1) When using the transport carriage 42, the door 13 is opened and closed, and the luggage is taken in and out (FIG. 4 (a)). At this time, since the locking pieces 24, 24 of the movable floor panel 3 are locked to the edge 20a of the through hole 20 of the floor board 1, even if baggage is not on the mobile floor panel 3, there is no possibility that the moving floor is out (FIG. 9A). Moreover, since the holding | gripping part 32 is accommodated in the movable floor board 3, it does not interfere with use of the conveyance trolley | bogie 42. FIG.
[0021]
(2) When the transport carriage 42 is not used, the door pieces 14 and 15 are rotated so as to contact the outside of the front fence 7 and the outside of the rear fence 8, respectively (FIGS. 4A and 4B). The movable floor board 3 is rotated (FIG. 4B).
[0022]
(3) At this time, the gripping portion 32 of the movable floor board 3 is first gripped, the gripping portion 32 is pulled out against the spring 35 (FIG. 6, chain line shown 32a), and the gripping portion 32 is gripped against the spring 38. And rotate in the direction of arrow 37. By this rotation, the rectangular rod 26 is also rotated, the engagement of the edge 20a of the pawl 25 and the through-hole 20 of the locking piece 24 by the rotation of the locking piece 24 which is connected deviates (FIG. 9 (b)) . Subsequently, the movable floor plate 3 is rotated around the axis on the floor substrate 2 side in the direction of arrow 44 (FIG. 4) while holding the grip portion 32, and the locking piece 24 and the guide protrusion 21 from the through hole 20. , 21 is removed (FIG. 9C), and is further rotated to bring the movable floor plate 3 into contact with the inner side of the rear fence 8 (FIG. 4C). As described above, the unlocking and folding operations of the movable floor plate 3 can be performed by a series of operations while holding the grip portion 32. At this time, if the gripping portion 32 is released, the gripping portion 32 is rotated in the direction of the arrow 36 by the spring 38 (FIG. 9C), and the gripping portion 32 is pulled toward the moving floor board 3 by the spring 35 (see FIG. 9). 6, solid line 32 ).
[0023]
(4) Subsequently, the side fence 9 can be folded inward by the shafts 10, 11, and 12, and the transportation carriage can be folded so that the floor boards 1 and 2 approach (FIGS. 4D and 4E).
[0024]
(5) When the transport carriage 42 is opened from the folded state to the used state, the operations (1) to (4) are performed in reverse (FIGS. 4E to 4A).
[0025]
(6) At this time, if the movable floor plate 3 is rotated and brought into contact with the floor substrate 1, it is guided by the inclined side surface 22a of the guide protrusions 21 and 21 without operating the separate gripping portion 32, and the guide The protrusion 21 and the locking piece 24 are easily inserted into the through-hole 20 (FIG. 9D), and the locking piece 24 rotates again against the spring 38, and the locking edge 20a of the through-hole 20 again. (FIG. 9A).
[0026]
In the above-described embodiment, the structure of the floor board 40 (movable floor board 3, floor boards 1 and 2) can also be used for a transportation carriage having other configurations (not shown).
[0027]
【The invention's effect】
The present invention has an effect that the moving floor board can be folded easily by releasing the engagement between the moving floor board and the floor board by a series of operations with one hand. Moreover, there is an effect that the movable floor board can be changed from the folded state to the locked state with the floor board only by rotating the movable floor board. Therefore, there is an effect that the mutual change from the folded state of the transport carriage to the use state can be easily and simplified.
[Brief description of the drawings]
FIG. 1 is a front view of a transport carriage using a floor board according to an embodiment of the present invention.
FIG. 2 is a rear view of the same.
3A is a left side view, and FIG. 3B is a right side view.
FIGS. 4A to 4E are schematic perspective views showing a folding process of a transport carriage.
FIG. 5 is an enlarged floor board of this embodiment, where (a) is a bottom view, (b) is a front view, and (c) is a right side view.
FIG. 6 is a partially enlarged bottom view of a front end portion of a moving floor board used in this embodiment.
FIG. 7 is an enlarged plan view of the floor substrate.
FIGS. 8A and 8B are views showing guide protrusions and locking pieces of the moving floor plate, in which FIG. 8A is an enlarged bottom view, and FIG. 8B is an enlarged side view.
FIGS. 9A to 9D are partial longitudinal sectional views showing the operation of the guide protrusion, the locking piece, and the through hole. FIGS.
[Explanation of symbols]
One bed board 2 bed board 3 moving floor panel 6 lower surface 7 before after fence 8 Rail 9 side fences 13 door 18 casters moving floor plate 20 through hole 20a engaging edge 21 guide projections 24 lock piece 40 floorboard 42 dolly

Claims (3)

It consists of two floor boards with casters and a movable floor board installed between the floor boards. One floor board and one side of the movable floor board are rotatably connected, and the other floor board and the movable floor board In the floor plate for a carriage configured to be detachable from the other side, two through holes having a locking edge are formed in the other floor substrate, and the bottom surface of the movable floor plate is the through hole. The guide protrusions that can be inserted into the through holes are respectively provided at positions corresponding to the guide protrusions, and in parallel with the guide protrusions, locking pieces that can be inserted into the through holes and locked to the locking edges are provided, A floor board for a carriage for transportation, characterized in that both locking pieces are interlocked.   2. The carriage according to claim 1, wherein the guide protrusion is composed of two parallel protruding pieces having a predetermined gap, the protruding piece is tapered, and a locking piece is inserted into the gap. Floor board. Each locking piece corresponding to the through-holes connected by a rectangular rod, the angular rod, the engaging piece with biases which are locked to the locking edge, the moving floor one end of the corner rod 2. A floor board for a transportation carriage according to claim 1, wherein a gripping part is formed on the part by projecting outward, and the gripping part is urged to be accommodated in the movable floor board.

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