JP2002284013A - Carrier for conveyance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrier for conveyance capable of being folded down flatly when transporting and storing it and nesting like a nest in a condition in which it can move at use site. SOLUTION: This carrier for conveyance consists of a back panel 4, both left and right side panels 2, 3 connected with both sides of the back panel 4 so as to fold and overlap for the back panel 4, and a bottom panel 1 supported in lower end parts of these three panels 2 to 4, the bottom panel 1 is connected in such a way that it can be mounted, dismounted, or folded and overlapped on any panel (back panel 4), and a wheel for travel is provided below a corner part among the back panel 4 and both left and right side panels 2, 3 and below a play end of both left and right side panels 2, 3. A fixing means 16 capable of freely releasing the fixation for fixing at least either of both left and right side panels 2, 3 to the back panel 4 so as to prevent folding and overlapping is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation cart that can be folded during transportation or storage.

[0002]

2. Description of the Related Art This type of transport cart has a bottom panel, left and right side panels, and a back panel, and is provided with moving wheels at four corners of the bottom panel. It is possible to remove the panel or fold it so as to overlap the inside of any one of the left and right side panels and the back panel, and in this state, fold the left and right both panels so as to overlap the inside of the back panel and stack the whole It is either flat or folded so that only one side panel overlaps the inside of the back panel so that the whole can be nested in a planar L-shape.

[0003]

However, when transporting trucks or storing in a warehouse, it is necessary to fold the entirety into a flat shape, and at the site of use, a dedicated space remains movable on the floor. It is necessary to provide a trolley that can be nested while reducing the overall size and that can be folded into an L-shape when viewed in a plane. The user selects and purchases the other folding form. Therefore, if the transport trolley that is convenient for truck transportation or storage in the warehouse is selected, the function that can be nested while it can be moved on the floor cannot be used. If a transport trolley that can be nested in a state where it can be moved is selected, the occupied space becomes large at the time of transporting a truck or storing in a warehouse, and the transport and storage cost increases.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transport trolley capable of solving the above-mentioned conventional problems. The back panel 4, left and right side panels 2 and 3 connected to both sides of the back panel 4 so as to be foldable with respect to the back panel 4, and these three panels 2 to 4
And a bottom panel 1 supported on the lower end of the bottom panel 1. The bottom panel 1 is detachably connected to one of the panels (the back panel 4) so as to be foldable. A transporting trolley provided with moving wheels 6a to 6d below the corner between the bottom and the free ends of the left and right panels 2 and 3, and at least one of the left and right panels 2 and 3 A fixing means 16 which can be fixed to the back panel 4 so as not to be folded and which can be released is provided.

In the embodiment of the present invention having the above-described structure, the fixing means 16 includes upper and lower overlapping portions provided at the upper overlapping portion among upper and lower overlapping portions provided at the lower end of the back panel 4 and the lower end of the side panel 2. A through hole 18, a vertical screw hole 17 provided in a lower overlapping portion, and a bolt 19 screwed into the screw hole 17 through the through hole 18.

The fixing means 16 includes a pair of inner and outer stoppers 40 provided on the side of the back panel 4 so as to fix the side panel 2 in the deployed position with respect to the back panel 4 with the lower end of the side panel 2 interposed therebetween. 41, and the stopper 41, which is the inner one of the two stoppers, can be a non-return stopper that allows only the unfolding movement of the side panel 2.

Further, the fixing means 16 is provided at a position above the fitted portion 47 provided on one of the one side panel 2 and the back panel 4 and at a position above the other fitted portion 47. It can be constituted by a fitting member 46 which is provided so as to be capable of fitting and detaching with respect to the fitted portion 47 and which can be moved up and down.

Further, a wheel mounting board portion is provided on the lower left and right ends of the back panel 4 and the lower free ends of the left and right panels 2 and 3 so as to project inward, and a lower rear end of one side panel 2 is provided. Is pivotally attached to a position near the back panel 4 of the substrate portion 10c on the side of the back panel 4 on the lower side thereof, and the lower rear end of the other side panel 3 is attached to the back panel 4 on the lower side. The one side panel 2 and the other side panel 3 are folded three times in this order inside the back panel 4 in such a manner as to be pivotally swingable at a position far from the back panel 4 of the side substrate portion 10d. It can be configured as possible.

Also, a back panel 4 and left and right side panels 2 and 3
Is positioned at the same level, and in the three-folded state, the wheel mounting substrate 10a below the free end of the one side panel 2 enters the lower side of the back panel 4, The wheel mounting substrate portion 10b below the free end of the other side panel 3 can be configured to enter the lower side of the one side panel 2.

The bottom panel 1 is pivotally attached to the lower end of the back panel 4 so as to be foldable on the back panel 4 and both left and right sides of the bottom panel 1 are supported by the side panels 2 and 3. In addition, locking means 20a and 20b which can prevent unlocking of the bottom panel 4 can be provided.

Incidentally, a detachable connecting bar 5 for connecting between the free ends of the left and right panels 2 and 3 may be provided.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a rectangular bottom panel; Panels 5 are connecting bars, which are provided with moving wheels 6a to 6d below the four corners of the bottom panel 1 so as to be movable on a floor as a transport cart.

Each of the peripheral panels 2 to 4 except the bottom panel 1
Have the same configuration, each of which has an angle member 7 serving as a bottom side, a gate material 8 in which a pipe material is bent into a gate shape and both ends are fixed to both ends of the angle material 7, A plurality of upper and lower horizontal rails 9a erected at appropriate intervals between the vertical pillars 8a and 8b, and the angled member 1 and the upper end horizontal frame 8c of the portal frame 8 inside the horizontal rail 9a. And a plurality of vertical bars 9b provided at appropriate intervals therebetween.

More specifically, as shown in FIGS. 2 to 5 and FIG. 8, the lower ends of the angle members 7 of the back panel 4 and the free ends of the angle members 7 of the left and right panels 2 and 3 (see FIGS. On the lower side (front end), there are provided substrate portions 10a to 10d each formed by welding another plate material to the lower surface of each angle 7. Each of these board parts 10a to 10d is connected to each of panels 2 to 4
The moving wheels (casters) 6a to 6d are attached to the lower side of each of the board portions 10a to 10d.

The bottom panel 1 is provided with a pair of left and right hinges 11a, 11b on the rear side of the bottom panel 1.
Are connected to be vertically swingable. These hinges 11
a and 11b are a support shaft 12 having one end fixed to the upper side of the angle member 7 of the back panel 4, and a fitting member 13 fixed to the rear side of the bottom panel 1 and externally fitted to the support shaft 12. It is composed of In addition, when the lower panel 1 is laid down to the right angle posture, the rear side of the bottom panel 1 is supported by the angle member 7 of the rear panel 4.

Vertical support shafts 14 and 15 project from the outer sides of the substrate portions 10c and 10d of the back panel 4, and the vertical support shafts 14 and 15 provide lower rear end portions of the side panels 2 and 3. That is, the rear end of the angle member 7 and the concentric position with the vertical support portion 8b of the gate-shaped frame member 8 are supported so as to be horizontally swingable. Thus, the vertical support shaft 14 that supports the side panel 2
Is located at a position close to the back panel 4 and a vertical support shaft 15 for supporting the side panel 3 is located at a position away from the back panel 4 in a forward direction, and as shown in FIG.
In a state where the side panel 2 is rotated so as to overlap with the inside of the back panel 4 by rotating the center panel 1a and 11b upward, the inside of the back panel 4 is rotated by rotating the side panel 2 around the vertical support shaft 14 (the folded bottom). (Outside of panel 1)
The outer side panel 3 can be folded so as to be overlapped by rotating the side panel 3 around the vertical support shaft 15. The lower ends of the left and right panels 2 and 3 and the back panel 4 are at the same level, and as shown in FIG.
When the side panel 3 and the side panel 3 are folded in this order substantially in parallel with each other, the board portion 10a at the free end (front end) of the side panel 2 enters the lower side of the back panel 4 and the board at the free end (front end) of the side panel 3 The portion 10b enters under the side panel 2 and the back panel 4.

The one side panel 2 is, as shown in FIG.
In a state in which the vertical support shaft 14 is rotated to the right angle position with respect to the back panel 4, it can be fixed to the back panel 4 by the fixing means 16. As shown in FIG. 8, the fixing means 16 is provided on the substrate portion 10c of the back panel 4 at a position overlapping the side panel 2 (angle member 7) which is in a posture perpendicular to the back panel 4 as described above. Vertical screw hole 17,
That is, the side panel 2 is aligned with the vertical screw hole 17.
And a bolt 1 that can be screwed into the screw hole 17 through the through hole 18.
9.

As shown in FIG. 2, the left and right side panels 2 and 3 are opened at right angles to the back panel 4, and the side panel 2 is fixed to the back panel 4 by the fixing means 16 in that position. The left and right sides of the bottom panel 1 can be supported by the angle members 7 of the side panels 2 and 3 by rotating the bottom panel 1 folded so as to overlap with the front panel to the horizontal position. Locking means 20a, 20b for locking the bottom panel 1 in this state are provided.

The locking means 20a and 20b are of the same construction which is symmetrical to the left and right. The locking means 20a on the side panel 2 shown in FIGS. 5 and 6 will be described as an example.
At the position near the front end of the angle member 7 of the side panels 2 and 3, a locked plate 21 protruding from the inside of the side wall 1 a of the bottom panel 1 and a locked plate provided on the locked plate 21. A horizontal through hole 23 provided in the side wall portion 1a of the bottom panel 1 so as to be adjacent to the locking hole 22; and a concentric center with the horizontal through hole 23 in the bottom of the bottom panel 1 at a position inside the locked plate 21. And a locking rod 24 supported in the shape of an arrow. The locking rod 24 is a pair of left and right through-bearing holes 2 provided in a locking rod supporting member 25 using a channel fixed to the bottom of the bottom panel 1.
6a and 26b, which are supported so as to be able to move in the axial direction (horizontal horizontal direction). An operation handle 27 is provided at the inner end at a right angle, and the outer side of each of the through support holes 26a and 26b. Stoppers 28a and 28b are protruded so as to be adjacent to.

As described above, with the left and right sides of the bottom panel 1 being supported by the angle members 7 of the side panels 2 and 3, the locking rod 24 of the bottom panel 1 is moved to the side panels 2 and 3 to be covered. Locked hole 22 of locking plate 21 and horizontal through hole 23 on bottom panel 1 side
, The upward movement of the bottom panel 1 is prevented. That is, the bottom panel 1 is locked. At this time, the side panel 3 that is not fixed to the back panel 4 is vertically supported in a direction away from the bottom panel 1 because the locked plate 21 of the side panel 3 enters the inside of the bottom panel 1. There is no rotation about 15. That is, the side panels 2 and 3 are fixed at positions adjacent to the left and right sides of the bottom panel 1.

In the state where the locking means 20a and 20b lock the bottom panel 1, the operating handle 27 of the locking rod 24 is suspended by gravity, and in this state, the stoppers 28a and 28b are moved. The locking rod 24 is immovably locked adjacent to both left and right outer surfaces of the locking rod support member 25. When the lock is released and the bottom panel 1 is moved upward to be folded, the operation handle 27 is rotated by a predetermined angle. As a result, since the stopper 28a is adjacent to the unlocking notch (not shown) connected to the through-support hole 26a, the locking rod 24 is moved inward as it is, and the engagement of the side panels 2 and 3 is stopped. It is detached from the locked hole 22 of the stop plate 21,
The bottom panel 1 can be unlocked. It is noted that the locking rod 24 is also disengaged from the through support hole 26a by the stopper 28.
a is in contact with the inner surface of the locking rod support member 25 on the side of the through-support hole 26b. Also, the through bearing hole 26
A notch 29 for passing the stoppers 28a and 28b is provided directly below the b side. This notch 2
9 is used when assembling the locking rod 24 to the locking rod support member 25 before being fixed to the bottom of the bottom panel 1.

The left and right side panels 2 and 3 have their lower ends supported by the vertical support shafts 14 and 15 so as to be horizontally swingable with respect to the back panel 4, and at the same time, as shown in FIG. Two-stage hinges 30a, 30b and 31
The left and right sides of the back panel 4 are supported by a and 31b. As shown in FIG. 7, all the hinges 30a to 31b are connected to the rear panel 4 between the rear holding portions 32b and 33b.
A pair of holding members 32, 33 for holding the gate-shaped frame vertical support portions 8a of the side panels 2 and 3 between the front-side holding portions 32a, 33a;
Bolt and nut 3 for fastening both holding members 32 and 33 to each other
4 and a side panel 2 with respect to the back panel 4.
In order to determine the position of the column-shaped frame member vertical support 8b, which is the center of swinging movement of the third member 3, the rear holding portion 32b of one of the holding members 32, 33 is welded or the like. The vertical frame portions 8a and 8b on the side panels 2 and 3 are fixed to the vertical frame portions 8a and 8b on the side of the back panel 4 and the front grip portions 32a and 33a of the grip members 32 and 33. It is configured so that it can rotate between itself. The hinges 30a, 30b on the side panel 2 side and the hinges 31a, 31b (see FIG. 7) on the side panel 3 side have the same configuration, but the hinges 31a, 31b on the side panel 3 side are the same as the side panel 2 side. The distance between the front and rear holding portions 33a, 33b is larger than that of the side hinges 30a, 30b.

In the above configuration, the left and right side panels 2 and 3 are
Vertical support shafts 14 and 15 on the back panel 4 side and hinges 30a to 3
As shown in FIG. 7, hinges 30a to 31b fixed to the back panel 4 side to prevent the vertical support shafts 14 and 15 from coming off the vertical support shafts 14 and 15 because they can be moved up and down with respect to 1b.
Among them, at least one of the upper and lower hinges, for example, the protrusion 35 adjacent to the lower ends of the upper hinges 30a and 31a,
It protrudes from the column-shaped frame material vertical support 8b on the side panels 2 and 3.

As shown in FIG. 9, a connecting bar 5 for connecting the free ends of the side panels 2 and 3 is connected to a support member 36 attached to the portal frame vertical support 8a of one of the side panels 2. One end is freely movably supported, and the other end of the connection bar 5 has a vertical cylindrical locked member 37 to be locked which is attached to the vertical frame portion 8a of the gate-shaped frame member of the other side panel 3. Part 37a
The hook portion 5a which can be freely disengaged is formed by bending.
Therefore, when folding the side panels 2 and 3, the hook 5
is detached from the vertical tubular locked portion 37a of the locked member 37, and the connecting bar 5 is suspended from the support member 36 on the side panel 2 side. When the side panels 2 and 3 are opened, the connecting bar 5 is lifted and the hook portion 5a is fitted and locked to the vertical cylindrical locked portion 37a of the locked member 37 on the side panel 3 side. The two side panels 2 and 3 can be connected to each other. As shown in FIG. 9, the supporting member 36 and the locked member 37 are configured to be rotatable up and down with respect to the column-shaped frame member vertical support portions 8a of the side panels 2 and 3, and when used, the side panels 2 and 2 are used. Projection 3 protruding from vertical support 8a of portal frame member 3
By fitting the notches 36b and 37b formed on the lower side of the support member 36 and the locked member 37 to 8, 39,
The support member 36 and the locked member 37 can be configured to be positioned at a predetermined height in a predetermined direction. With this configuration, when the side panels 2 and 3 are folded, the supporting member 36 and the locked member 37 are lifted and rotated, so that the connecting member 5 is hung down.
And a locked member 37 from which the vertical cylindrical locked portion 37a protrudes.
Can be freely changed.

When using the transport cart having the above configuration,
As shown in FIGS. 1 and 2, the left and right side panels 2 and 3 are opened to the front panel at right angles to the back panel 4, and in this state, one side panel 2 is fixed to the back panel 4 by bolts 19 of the fixing means 16. Then, the bottom panel 1 is tilted forward and downward, and its left and right sides are placed on the angle members 7 of the side panels 2 and 3. At this time, a pair of left and right locking means 20
Since the locked plates 21 on the side panels 2 and 3 of the a and 20b enter the inside of the left and right side walls 1a of the bottom panel 1, the locking rods 24 of the locking means 20a and 20b face outward in this state. And move the left and right sides of the side panel 1 to the side panels 2 and 3
To lock. Note that the locking rod 24 before the bottom panel 1 is tilted is
Since the stopper 28a is located between the through-bearing holes 26a and 26b, when the stopper 28a is moved outward, the stopper 28a is locked by the operating handle 27 at an angle at which the stopper 28a can pass through the cutout of the through-bearing hole 26a. This is performed with the rod 4 rotated.

As described above, the side panels 2 and 3 are opened and the side panel 2 is fixed to the back panel 4 and the bottom panel 1
When the transporting wheels 6a to 6d are used, the transported object is stacked on the bottom panel 1 and the connecting bar 5 is stretched between the panels 2 and 3 as necessary. Then, the carriage can be manually pushed and moved to perform the work of transporting the transported object.

When the unused carriage is stored in the nesting state on the floor, as shown in FIG. 4, the locking rod 24 of the locking means 20a, 20b is moved inward to lock the bottom panel 1. After the release, the bottom panel 1
Move it up and over to fold it inside. Then, the side panel 2 fixed to the back panel 4 by the fixing means 16 is left as it is, and the side panel 3 not fixed is fixed.
Is folded on the inside of the back panel 4 (outside of the standing bottom panel 1). In this manner, by deforming the cart into an L shape in plan view, a plurality of carts similarly deformed are nested into each other as shown by phantom lines in FIG. It can be stored in a state where it can be moved on the floor using the wheels 6a to 6d.

When the truck is transported by truck or stored in a warehouse, as shown in FIG. 3, the bottom panel 1 is moved upward so as to overlap the inside of the back panel 4 and folded as described above. The fixing of the side panel 2 is released by removing the bolt 19 of the fixing means 16, and the side panel 2 is first folded so as to overlap the inside of the back panel 4 (outside of the standing bottom panel 1). Fold it over the outside of the panel 2. In this way, by deforming the carriage in a flat shape in plan view, the carriage can be transported or stored in a free form such as stacking.

The means for preventing the left and right side panels 2 and 3 from coming off the vertical support shafts 14 and 15 by lifting is not limited to the configuration using the projection 35 shown in FIG. For example, as shown in FIG. 10, by disposing at least one of the cross members 9 a of the side panels 2 and 3 at a position adjacent to the lower ends of the hinges 30 a to 31 b fixed to the back panel 4 side. The lifting of the side panels 2 and 3 can be prevented by the contact between the hinges 30a to 31b on the side of the back panel 4 and the cross beam 9a.

The fixing means 16 for fixing the side panel 2 to the back panel 4 at a right angle open position is not limited to the above embodiment. For example, as shown in FIGS. 11 and 12, a pair of stoppers 40, 41 for sandwiching the angle member 7 of the side panel 2, which is open at right angles to the back panel 4, from the left and right sides, is provided on the substrate portion 10 c on the back panel 4 side. Provide. The outer stopper 40 is formed of a separate member attached to the substrate portion 10c, or protrudes upward integrally from the substrate portion 10c as shown in the drawing, and the inner stopper 41 is formed by a front-rear horizontal support shaft 42. The end portion is supported below the substrate portion 10c, and is projected obliquely upward toward the side panel 2 from the notch opening 43 provided in the substrate portion 10c to form a non-return stopper. A torsion coil spring 44 for biasing and holding the protruding posture is provided around the support shaft 42. The fixed stopper 40 may be in contact with the outer surface of the angle member 7 of the side panel 2, but a notch opening 45 is formed at the corner of the angle member 7 as shown in the illustrated example. , The side edge 45 of the notch opening 45
The fixed stopper 40 can be configured to abut on a.

According to the fixing means 16 having the above structure, the side panel 2 is opened at right angles to the back panel 4 and the angle member 7 is brought into contact with the fixing stopper 40. The check stopper 41 once pressed down against the spring 44 at 7 stands up and returns, the fixed stopper 40 and the check stopper 41 sandwich the angle member 7 of the side panel 2 from both right and left sides, and open the side panel 2 at right angles. Can be fixed in posture. When folding the side panel 2, the side panel 2 is rotated inward while the check stopper 41 is pushed down with a fingertip or the like against the spring 42 and moved to the escape position allowing the side panel 2 to pass. good.
In the fixing means 16 using the check stopper 41, the structure of the check stopper 41 is not limited. For example, the cut-and-raised tongue piece for the stopper, which is formed integrally with the notch in the substrate portion 10c, is configured to be capable of swinging up and down against a thin hinge portion formed at the base thereof as a fulcrum against elasticity. The stopper 41 can be formed integrally with the substrate portion 10c. When the check stopper 41 made of a separate member is used as described above, the check stopper 41 can be attached to the substrate portion 10c via a leaf spring so as to be vertically swingable without being supported by the support shaft 42.

A fixing means 16 for the side panel 2 shown in FIG.
Is a hinge 30 connecting the side panel 2 and the back panel 4.
a and 30b, a fitting member 46 which can be moved up and down with respect to the gate frame vertical support 8a of the back panel 4 is provided.
On the side, when the fitting member 46 is lowered in a state where the side panel 2 is opened to the right-angled opening posture, the fitting portion 47 into which the bulging fitting portion 46a of the fitting member 46 fits outside projects. It was established. According to the fixing means 16 using the vertically movable fitting member 46, when the side panel 2 is in the folded posture overlapping the inside of the back panel 4, the fitted portion 47 on the side panel 2 side and the back panel 4 are in contact with each other. In the state where the fitting portion 46a of the fitting member 46 on the side is shifted in the circumferential direction, the fitted portion 47 on the side of the side panel 2 is
In this state, the fitting member 46 on the side of the back panel 4 is received, so only by opening the side panel 2 to the right-angle opening posture,
The fitting member 46 descends due to gravity, and the fitting portion 46a is fitted to the fitted portion 47 on the side panel 2 side, and the side panel 2 is fixed in a right-angled open position. By lifting and detaching it upward from the fitted portion 47, the side panel 2
Can be freely rotated and folded.

The fitting member 46 includes a hinge 30a,
A bulging fitting portion 46a integrally protrudes from front holding portions 32a, 33a of the holding members 32, 33 to the same configuration as that of the holding member 32, 33. It is used without being fixed to the vertical support 8a. The fitted portion 47 is formed by fixing a rod-shaped material to the gate-shaped frame vertical support 8b on the side panel 2 side. Is not limited to the above.

[0034]

The transport cart of the present invention can be implemented and used as described above. According to the transport cart of the present invention, when transporting trucks or storing in a warehouse, With the bottom panel removed or folded inside the back panel etc., fold both left and right panels so as to overlap the inside of the back panel, and deform it into a flat shape where stacking etc. is easy and the exclusive space is the smallest. In addition, transportation and storage costs can be significantly reduced. Also, when the dolly is to be kept on standby at the site of use, remove the bottom panel or fold it inside the back panel etc., and fix one side panel to the back panel at a right angle to the back panel by fixing means. While being fixed, only the other side panel is folded so as to overlap the inside of the back panel, the whole is deformed into a planar shape L shape, and nested in a nesting manner while being movable on the floor surface, and exclusive space It can be stored in a state with little. In this way, a single transport truck can be effectively folded during truck transport or storage in a warehouse, and it is effective for nesting and storage in a movable state at the site of use. It can be used as a bogie that can be folded easily, and its economic effect is enormous.

According to the configuration of the second aspect, the fixing means of the side panel can be configured simply and inexpensively by using bolts. According to the third aspect of the present invention, no special operation is required to fix the side panel with the fixing means, and the handling becomes easy. Further, according to the configuration of the fourth aspect, the side panel can be fixed and released simply by moving the vertically movable fitting member up and down, and the structure is simple and inexpensive.

According to the fifth aspect of the present invention, when the width of the left and right side panels is at least half the width of the back panel, the two side panels are superimposed on the inside of the back panel substantially in parallel with each other. It can be folded in the most compact state of three layers. Also, since the lower rear end portions of the left and right panels are pivotally mounted on the wheel mounting substrate portion on the back panel side, the rear side of the side panel is hinged to the side of the back panel with a hinge. , The overall strength can be increased.

Further, according to the configuration of the sixth aspect, the moving wheels are firmly and stably mounted by using the wheel mounting substrate portions provided below the back panel and the left and right side panels. Despite this, the whole can be folded compactly without being disturbed by the existence of the wheel mounting substrate portion when folding.

Further, according to the configuration of the seventh aspect, it is possible to compactly fold without removing the bottom panel. Furthermore, in use, the bottom panel can be prevented from floating unexpectedly by the locking means, and can be used safely.
Further, according to the configuration of the eighth aspect, in the use state, the free ends of the left and right panels are connected by the connecting bar to increase the overall strength, and depending on the loaded transported object, The prevention effect is also obtained.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a transport trolley in a used state, in which A is a right end view, B is a front end view, C is a left end view, D
The figure is a plan view, and the figure E is a rear end view.

FIG. 2 is a plan view in a state where a bottom panel in a left half of the transporting cart in use is omitted.

FIG. 3 is a plan view showing a state in which the transport cart is folded flat.

FIG. 4 is a plan view in a state where the transport cart is folded into an L-shape.

FIG. 5 is a partially cutaway plan view of the left half of the transporting cart in use.

FIG. 6 is a partially longitudinal front view showing the locking means of the bottom panel.

FIG. 7A is an exploded cross-sectional plan view showing a hinge,
FIG. B is a side view showing the hinge.

FIG. 8 is a longitudinal sectional side view for explaining a fixing means of the side panel.

FIG. 9 is a rear view illustrating a connecting bar.

FIG. 10 is a side view of a main part illustrating a modification of the side panel.

FIG. 11 is a plan view showing a second embodiment of the fixing means of the side panel.

FIG. 12 is a vertical sectional front view showing the third embodiment.

FIG. 13 is a side view showing a third embodiment of the fixing means of the side panel.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bottom panel 2, 3 left and right side panels 4 back panel 5 connecting bar 6 a to 6 d moving wheel 10 a to 10 d wheel mounting substrate portion 11 a, 11 b bottom panel hinge 14, 15 side panel vertical support shaft 16 side panel Fixing means 17 Vertical screw hole 18 Vertical through hole 19 Bolt 20a, 20b Bottom panel locking means 21 Locked plate 22 Locked hole 23 Horizontal through hole 24 Locking rod 30a-31b Side panel hinge 35 Side panel Protrusion for preventing lifting 36 Supporting member for connecting bar 37 Locked member for connecting bar

Claims (8)

[Claims] A back panel, left and right side panels connected to both sides of the back panel so as to be foldable with respect to the back panel, and a bottom panel supported by lower ends of the three panels. The bottom panel is detachably or foldably connected to any of the panels, and a transfer wheel provided with a moving wheel below the corner between the back panel and the left and right panels and below the free end of the left and right panels. A transport trolley, comprising: a trolley, which is provided with fixing means capable of releasing at least one of right and left side panels to a back panel so as not to be folded. 2. The fixing device according to claim 1, wherein the fixing means includes a vertical through hole provided in an upper overlapping portion of a vertical overlapping portion provided at a lower end of a back panel and a lower end of a side panel, and a lower overlapping portion. The transporting trolley according to claim 1, comprising a vertical screw hole provided and a bolt screwed into the screw hole through the through hole. 3. The fixing means comprises a pair of inner and outer stoppers provided on the back panel side so as to fix the side panel in a deployed posture with respect to the back panel across the lower end of the side panel. , The inner stopper,
The transporting trolley according to claim 1, wherein the transporting trolley is configured as a non-return stopper that allows only the unfolding movement of the side panel. 4. The fixing device according to claim 1, wherein the fixing means is provided on one of the side panel and the back panel, and is fitted to the fitted part at a position above the other fitted part. The transporting trolley according to claim 1, comprising a vertically movable fitting member detachably provided. 5. A wheel mounting board portion is provided on the lower left and right lower ends of the back panel and the free lower end of the left and right panels so as to project inward. The lower panel is pivotally attached to a position near the back panel of the substrate section on the back panel side, and the lower rear end of the other side panel is
The lower side of the back panel side of the substrate portion is pivotally pivotally mounted at a position distant from the back panel, and inside the back panel, the one side panel and the other side panel are stacked three in this order. The transporting trolley according to claim 1, wherein the transporting trolley is configured to be foldable. 6. The lower end of the back panel and the right and left side panels are at the same level, and in the three-folded state, the wheel mounting substrate portion of the one side panel below the free end is the back panel. The transporting trolley according to claim 5, wherein the transporting trolley is configured to enter a lower side of the panel so that a wheel mounting substrate portion below a free end of the other side panel enters a lower side of the one side panel. 7. The bottom panel is pivotally attached to the lower end of the back panel so as to be foldable on the back panel, and the left and right sides of the bottom panel are supported by the side panel. The transporting trolley according to any one of claims 1 to 6, further comprising an unlocking locking means for preventing movement. 8. The transport trolley according to claim 1, further comprising a detachable connection bar for connecting between the free ends of the left and right side panels.