JP2000168564A - Folding dolly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding dolly of simple structure having good running performance, capable of folding up its casters, and accommodatable compactly. SOLUTION: This folding dolly is equipped with a plate-form load table 10 positioned horizontally and a plurality of casters 14 and 16 installed on the bottom surface of the table 10. The arrangement further includes a holding member 12 installed between the casters and table 10 to hold the casters 14 and 16 in such a way as capable of folding so that their axles 22 are positioned at a right angle to the table 10 and a locking means 24 to hold the casters 14 and 16 in the rising attitude.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding cart which is designed to carry heavy or large items, carry the items by hand, and fold them up when not in use.

[0002]

2. Description of the Related Art Conventionally, a trolley for placing heavy or large loads and transporting it by hand has a plate-shaped carrier, and four casters are attached to the lower surface of the carrier, and one end of the carrier is attached to one end of the carrier. A transport handle for manually pushing the carrier was provided.

[0003] Among such trucks, there has been a folding truck in which the transport handle is folded down when not in use to make it compact. In addition, there has been a folding truck disclosed in Japanese Patent Application Laid-Open No. 63-203468 as one in which the loading platform is also a folding type. This means that the bed is divided into three parts parallel to each other,
They were connected by a connecting shaft. A pair of bed lock bars are provided on the lower surface of the bed, and when using the trolley, this bed lock bar is passed over each divided bed and fixed, and when not used, this bed lock bar is removed,
The bed was bent to make it compact so that it could be stored.

[0004]

In the case of the folding cart of the prior art described above, since the casters are fixed to the carrier,
Even if the cargo bed divided into three parts is folded, it has a large thickness, cannot be stacked on each other, and is bulky. There was also a method of reducing the diameter of the wheels of the caster to make it compact. There was a problem that it became difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a folding cart which has good running performance, is capable of folding casters with a simple structure, and can be stored compactly. I do.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a plate-like carrier horizontally positioned, a plurality of casters mounted on the bottom surface of the carrier, and the casters mounted between the casters and the carrier. A folding cart provided with a holding member that holds the caster in a foldable manner so that the axle of the caster is at right angles to the carrier, and a lock unit that holds the caster in an upright state. The holding member has an L-shaped cross section, and the casters are attached to the L-shaped side surface. The L-shaped corner is provided with a swing shaft, and the lock means swings the holding member to raise the caster,
A lock member such as a lock plate for holding the holding member so as not to fall down.

In the folding cart of the present invention, the axle of the caster is positioned substantially parallel to the carrier when in use, and when not in use, the holding member holding the caster is centered on the swing shaft. And can be folded with the axle substantially perpendicular to the carrier.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The folding cart of this embodiment has a plate-like carrier 10 as shown in FIGS. 1 to 6,
On both sides of the lower surface of the carrier 10, holding members 12 having an L-shaped cross section are provided in parallel with each other. The holding member 12
It is provided so as to be able to swing 90 ° by a swing shaft 13 positioned in parallel with the carrier 10. One end of the holding member 12 has a pair of rotating casters 14 that can freely change the direction of the wheel 20.
Are provided on both sides, and a pair of rectilinear casters 16 in which the direction of the wheel 20 is constant are attached to both ends of the other end of the holding member 12.

The rotating caster 14 has an attaching member 18 made of a metal plate bent in an L-shape, and the attaching member 18 is provided at right angles to one side surface 12 a of the holding member 12.
5 is attached so as to be freely rotatable. And
The wheel 20 of the rotating caster 14 is provided with an axle 22 supported at one end of the mounting member 18. The axle 22 of the straight caster 16 is supported by the other side surface 12b of the holding member 12 having an L-shaped cross section.

When the side surface 12b of the holding member 12 is erected on the back of the carrier 10, the holding member 1
A lock plate 24, which is raised between the two side surfaces 12 b and is fixed so that the holding member 12 does not fall inward, is swingably provided. The lock plate 24 is provided with a hinge 26 having a swing axis on one side edge, and is provided so as to be movable with respect to the carrier 10 between a standing state and a falling state. still,
The lock plate 24 may be another lock means, a lock member provided on the holding member 12 to contact the carrier 10 to support the holding member 12, or may use another projection or the like.

A transport handle 28 is mounted on the back side of the loading platform 10 near the end where the pair of straight casters 16 are mounted, and the transport handle 28 is formed by bending a pipe into a U-shape. As shown in FIG. 4, both ends of the transport handle 28 are pivotally supported by a shaft support member 30 projecting substantially at right angles to the back surface of the carrier 10 and swing 270 ° from the back surface of the carrier 10. It can be used by contacting the edge. Further, in this state, the lock member 32 is provided so that the upright state can be maintained. This handle is provided on the front side of the loading platform 10 in addition to the one that swings 270 ° from the back side of the loading platform 10 and has a 90 ° rotation.
It may be made to swing and raise.

Next, a method of using the folding cart will be described. First, from the folded state shown in FIG. 1 and the like, the transport handle 28 is swung by 270 ° to stand up above the loading platform 10, and is fixed by the lock member 32. Then, it swings so as to raise the side surface 12 b of the holding member 12. Then, the side surface 12a of the holding member 12 comes into contact with the lower surface of the carrier 10 and stops. In this state, the lock plate 24 is raised. The lock plate 24 is fixed in a standing state by a stopper (not shown). Thereby, it can be used as a truck.

When folding from the state shown in FIG.
Contrary to the above, the stopper (not shown) is released, the lock plate 24 is lowered to the lower surface of the carrier 10, and the side surface 12 of the holding member 12 is
b to be brought into contact with the lower surface of the carrier 10. As a result, the axles 22 of the wheels 20 are folded at right angles to the carrier 10 respectively. Further, the lock member 32 is released, and the transport handle 28 is swung toward the back side of the carrier 10. Thereby, it is folded into a flat state as shown in FIG.

According to the folding cart of this embodiment, the rotary casters 14 and the straight casters 16 can be easily folded when not in use, and as shown in FIG. It is convenient without taking up space, and can be easily stored in a storage bag or the like and carried. Further, there is no need to reduce the size of the wheels to make them compact, so that large wheels 20 can be used, and the wheels are resistant to irregularities and vibrations and can easily go over steps.

The folding cart of the present invention is not limited to the above-described embodiment, and the holding members for the rotating casters and the straight casters may be separate. Also,
The cross-sectional shape of the holding member may be not U-shaped but U-shaped, and may hold both ends of the axle of the wheel. Also,
The loading platform may be a folding type that is further folded in the center, and the transport handle may be removed or folded.
It can be housed more compactly. The means for fixing each holding member to the metal plate is not limited to a pin, and may be anything as long as it is securely fixed, and may be a locking member using a plate spring.

[0016]

According to the folding carriage of the present invention, the axle of the caster can be folded at a right angle to the carrier with a simple structure, and can be stored compactly when not in use. In addition, even when the size of the wheels is increased, the cart can be thin and compact in the folded state, and a bogie with good running performance can be provided.

[Brief description of the drawings]

FIG. 1 is a bottom view of a folding cart according to an embodiment of the present invention in a folded state.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a partially enlarged view of a lock plate portion taken along the line AA of FIG. 1;

FIG. 5 is a right side view of the folding trolley of the embodiment in use.

FIG. 6 is a front view of the folding cart according to the embodiment in use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Luggage carrier 12 Holding member 13 Oscillating shaft 14 Rotary caster 16 Straight caster 20 Wheel 22 Axle 24 Lock plate 28 Handle for conveyance

Claims (2)

[Claims] 1. A horizontal plate-shaped carrier, a plurality of casters mounted on a bottom surface of the carrier, and an axle of the caster mounted between the casters and the carrier relative to the carrier. A folding cart, comprising: a holding member that holds the caster so as to be foldable so as to be at a right angle; and a lock unit that holds the caster in a raised state. 2. The holding member has an L-shaped cross section, and the casters are attached to the L-shaped side surface.
The L-shaped corner portion is provided with a swing shaft, and the locking means is a lock member that swings the holding member so as to raise the caster and hold the holding member so that the holding member does not fall. The folding cart according to claim 1, wherein