JPH10181607A - Wheelbarrow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a wheelbarrow packable compactly and reduce storage space by making handles foldable to a frame so as to be put in the non- projecting state of handles at the time of being folded. SOLUTION: In case of putting a wheelbarrow 1 in a service state, handles 4 rotatably fitted to support cylinders 3a integral with frames 3 in a lateral frame 4b are rotated in a service position. A fixed plate 7 provided on the handle side, and a fixing plate 6 provided on the frame 3 side are then overlapped, and a fixing screw is thread-fastened to a knob 9 with an external thread part and tightened to each other so as to fasten both plates integrally. The handles 4 are therefore fixed in the service position, and these handles 4 are gripped to use the wheelbarrow 1 in the same way as a normal wheel barrow. In case of storing the wheelbarrow 1, thread-fastening of the fixing screw 8 and knob 9 is released, and the handles 4 are rotated around the support cylinders 3a so as to store the wheelbarrow 1 in the non-projecting state of the handles 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cart, for example, a unicycle, which is used by pushing or pulling by hand.

[0002]

2. Description of the Related Art As shown in FIG. 7, for example, a unicycle 30 has a tray 31 on which luggage is placed, a frame 32 for receiving the tray 31, and a rearward extension from the frame 32.
It comprises a handle 33 for a person to grip, a tire 34 rotatably supported at the front end of the frame 32, and the like.

It is desirable that the unicycle 30 constructed as described above can be packed as compact as possible, for example, in order to facilitate the shipment from the manufacturer to the store. For this reason, the unicycle 30 is conventionally shown in FIGS. As shown, each part 31 to 34 was configured to be disassembled. At the store, each part 31 to 34 packed in this disassembled state
Was assembled using fixed screws and sold.

[0004]

As described above, in the conventional unicycle 30, it is necessary to assemble the parts 31 to 34 which are disassembled into pieces, so that the work is troublesome. This problem is not limited to the store, and for example, when a user (final user) disassemble and transport it to another place, the same trouble has to be taken.

The present invention has been made in view of the above problems, and has as its object to provide a cart which can be packed compactly and can be easily assembled in a usable state.

[0006]

According to a first aspect of the present invention, there is provided a cart including a tray on which a load is placed, a frame for receiving the tray, and a handle extending rearward from the frame for gripping by a person. A cart with tires rotatably attached to the frame, wherein the handle is foldable with respect to the frame, and can be taken out of the folding position and fixed at a use position. And

According to this cart, when the handle is folded with respect to the frame, the overhanging portion of the handle is eliminated, so that the cart can be packed compactly. At the time of use, it is sufficient to take out the handle from the folding position and fix it at the use position, so that it can be easily restored to a usable state.

In order to make the handle foldable with respect to the frame, for example, the handle may be rotatably supported at the rear of the frame. Conversely, in order to rotate the handle from the folded position and fix it in the state where it is taken out to the use position, for example, a fixing plate that is superimposed when the handle is taken out to the use position is provided on both sides, and The fixing plates may be fixed by using fixing screws or by inserting fixing pins.

According to a second aspect of the present invention, there is provided a cart as described in the first aspect, wherein a fixing plate is provided on a frame and a handle. Are overlapped, and the handle is held in the use position by being fixed in the overlapped state.

According to this cart, fixing at the use position can be easily performed.

According to a third aspect of the present invention, there is provided a cart including a tray on which a load is placed, a frame for receiving the tray, a handle extending rearward from the frame for gripping by a person, and a rotatable front part of the frame. , Wherein the tire is attached to the front of the frame via a tire frame that is removably attached to the front of the frame.

According to this cart, the tire protruding below the tray can be removed from the lower surface of the tray at the time of use, so that a compact packing can be made accordingly. Regarding the mounting form of the tire frame to the frame, a configuration using fixing screws or inserting and removing fixing pins can be considered.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
Explanation will be given based on FIG. FIGS. 1 and 2 show a unicycle 1 as an embodiment of the cart according to the first or second aspect. The unicycle 1 according to the first embodiment includes a tray 2 having a tray shape for placing luggage, a frame 3 for receiving the tray 2, a handle 4 extending from a rear portion of the frame 3, and a front of the frame 3. The tire 5 is rotatably mounted on the portion.

The frame 3 is fixed to the lower surface of the tray 2. In the present embodiment, two frames 3, 3 whose front portions are bent in an L shape are attached to the lower surface of the tray 2 in parallel with each other. The tire 5 is rotatably supported between the front ends of the two frames 3 and 3 bent in an L shape.

On the other hand, pipe-shaped support cylinders 3a, 3a are attached to the rear ends of the frames 3, 3 concentrically with each other. The handle 4 is rotatably supported by the rear ends of the frames 3, 3 via the support cylinders 3a, 3a.

The handle 4 is composed of mutually parallel vertical frames 4a, 4a.
The two horizontal frames 4b, 4b are formed in parallel between them, and the lower horizontal frame 4b is inserted into the support cylinders 3a, 3a, and the handle 4 is moved relative to the frames 3, 3. It is rotatably supported. One end of the vertical frame 4a of the handle 4 thus supported (the upper end in FIG.
The lower end in FIG. 2 is a gripping portion 4c for holding by a person during normal use, and the other end (lower end in FIG. 1, upper end in FIG. 2) is to be installed on the ground during use. Stands 4d, 4d.

Since the handle 4 is provided rotatably with respect to the frames 3, 3, the handle 4 can be folded with respect to the frames 3, 3. FIG. 1 shows a state in which the handle 4 is taken out to a use position extending rearward from the frames 3 and 3, and FIG. Is shown.

Next, as shown in FIG.
A fixing plate 6 is provided between the rear portions of the fixing device. The fixed plate 6 is provided with a long groove hole 6a and a circular hole 6b communicating with each other. On the other hand, the lower horizontal frame 4 of the frame 4
A fixing plate 7 is also provided at the center of b. The fixing plate 7 is provided with support cylinders 3a, 3
a, whereby the lateral movement of the handle 4 is restricted. When the handle 4 is rotated, the fixed plate 7 rotates integrally with the lower horizontal frame 4b between the support cylinders 3a. The fixed plate 7 is formed with a long slot 7a having the same width as the long slot 6a.

The two fixing plates 6 provided in this manner are provided.
When the handle 4 is rotated upward and positioned at the use position as shown in FIG. 1, the handle 7 is superimposed.
In this superposed state, the long slot 7a on the fixed plate 7 side is
b. This state is shown in FIG.

Next, in the long slot 7a of the fixing plate 7,
A fixing screw 8 and a knob 9 are attached. Fixing screw 8
Has a circular head 8a, a square step 8b formed in the center of the lower surface of the head 8a, and a screw 8c protruding from the center of the step 8b. The diameter is larger than the width of the long holes 6a, 7a, and larger than the diameter of the circular hole 6b, and the width of the step 8b is set to a width that can be inserted into the long holes 6a, 7a with almost no play.

The fixing screw 8 thus formed is inserted into the long slot 7a of the fixing plate 7 with its head 8a facing the fixing plate 6 on the frame 3, 3 side. The knob 9 is attached to the portion 8c.

According to the fixing screw 8 provided in this manner, when the handle 4 is rotated to the use position in order to use the unicycle 1 as described above, the fixing plate 6 and the fixing plate 7 are overlapped. At the same time, the head 8a of the fixing screw 8 is inserted into the circular hole 6b of the fixing plate 6. This state is shown in FIG. 1 and FIG.

Thereafter, when the user grips the knob 9 and moves the fixing screw 8 to the right end of the long slot 7a (operation (A) → (B) shown in FIG. 4), the fixing screw 8 Step 8b enters the long slots 6a, 7a of the fixing plates 6, 7, whereby the fixing plates 6, 7 are connected between the head 8a of the fixing screw 8 and the knob 9 as shown in FIG. Sandwiched between
Therefore, when the knob 9 is tightened, the two fixing plates 6 and 7 are fixed in an overlapping state, whereby the handle 4 is fixed in its use position.

On the other hand, the knob 9 is loosened and the fixing screw 8
Is moved to the left end of the slot 7a (operation (B) → (A) shown in FIG. 4), the head 8a enters the circular hole 6b of the fixing plate 6, and the fixing screw 8 6, the fixing plate 7 can be separated from the fixing plate 6, so that the handle 4 can be rotated from the use position to the folding position.

With the handle 4 in the folded position, the fixing screw 8 can be attached to the fixing plate 6 as long as the knob 9 is not removed from the screw portion 8c.

According to the unicycle 1 constructed as described above, the handle 4 is rotatable about the horizontal frame 4b, so that the position along the lower surface of the tray 2 (folding position) as shown in FIG. Can be folded. When the handle 4 is folded in this way, the overhanging portion from the tray 2 can be eliminated by that amount, so that when the unicycle 1 is packed, it can be compactly packed in a small box.

Moreover, when taking out the handle 4 from the above-mentioned folded position to the use position (when assembling the unicycle 1), the knob 9 is gripped by holding the fixed plates 6 and 7 together. After the fixing screw 8 is moved to the opposite end of the long slot 7a, the knob 9 is tightened to fix the fixing plates 6
7 is fixed in an overlapping state, and the handle 4 is fixed in its use position. From this, according to the unicycle 1 of the present embodiment, the handle 33 is connected to the frame 3 as in the related art.
The installation of the unicycle 1 can be performed more easily as compared with the case where the unicycle 1 is detached from the vehicle.

Next, FIGS. 5 and 6 show a unicycle 20 as an embodiment of the cart according to the third aspect. The unicycle 20 of the second embodiment is characterized in that the tire 21 is detachable from the tray 22. That is, as shown in FIG.
On the lower surface of 2, two frames 23, 23 are attached in parallel with each other. The two frames 23, 23 in the second embodiment are not bent in an L-shape as in the first embodiment, but remain in a substantially straight state.
To the vicinity of the tip.

Near the ends of the frames 23, 23,
The support cylinder parts 24 are respectively attached. A fixing screw 25 with a knob is provided on each of the support cylinder portions 24, 24.
Is provided to be screwable.

A fixed bracket 26 is attached between the ends of the frames 23, 23 in a bridging manner. A screw hole 26a is formed in the center of the fixing bracket 26.

On the other hand, the tire 21 has a bar having a circular cross section
It is rotatably supported so as to be sandwiched between the tip portions of the tire frames 27, 27 that are bent in a letter shape.
Near the rear ends of the two tire frames 27, 27, the cross-section is substantially L.
A letter-shaped fixing bracket 28 is attached in a bridging manner. At the center of the fixing bracket 28, a fixing screw 29 with a knob is attached so as to be rotatable and not fall off. The fixing screw 29 is provided toward the rear,
Therefore, the knob of the fixing screw 29 is located on the opposite side of the fixing bracket 28 although not shown in FIG.

At the rear ends of both tire frames 27, 27, a groove 27a having a semicircular cross section is formed over the entire circumference. The position of both grooves 27a, 27a
When the rear ends of the two tire frames 27, 27 are inserted into the support cylinders 24, 24, respectively, and the fixing bracket 28 is brought into contact with the fixing bracket 26 between the frames 23, 23, the support cylinders 24, 24 It is set at a position where the provided fixing screw 25 enters.

According to the unicycle 20 of the second embodiment configured as described above, if the fixing screws 25, 25 are loosened and the fixing screws 29 are removed from the screw holes 26a of the fixing plate 26, as shown in FIG. Tire 21 to both tire frames 2
Since the tray 22 can be removed from the lower surface of the tray 22 integrally with the trays 27 and 27, the protruding portion of the tray 22 can be reduced by that amount, and as a result, the unicycle 20 can be compactly packed.

When mounting the tire 21 on the lower surface of the tray 22 (when assembling the unicycle 20), the rear ends of the two tire frames 27, 27 are respectively supported by the support cylinder 2.
4, the fixing plate 28 is brought into contact with the fixing plate 26. In this state, the fixing screws 25, 25 are tightened, and the fixing screw 29 is screwed into the screw hole 26a. 21 is tray 22
Can be firmly attached to This state is shown in FIG.

In this regard, conventionally, as shown in FIG. 9, since the tire 34 is detached from the tip portion 32a of the frame 32 bent in an L-shape and packed, a nut such as a wrench is used when assembling. It is necessary to perform the work of tightening the 34a, which is a troublesome work for women and the like. However, according to the unicycle 20 of the second embodiment, a special tool can be used for compactly packing and assembling. Since the tire 21 can be easily attached without using the tires, even a woman or the like can easily attach the tire 21.

In particular, in the case of the second embodiment, the tire frames 27, 27 and the frames 23, 2 bent in an L-shape.
3, the compact packing can be realized also in this respect. In this regard, when the entirety of the conventional frame 32 is removed from the tray 31, the tip portion 32a bent in an L shape is formed.
However, since the protruding portions of the frame 32 and the stand 32b were integrated, there was a problem that the packing of the frame 32 was bulky.
According to the configuration of the embodiment, such a problem can be solved.

Various modifications can be made to the embodiment described above. For example, the configuration of the first embodiment and the second
It is possible to adopt a configuration obtained by combining the configurations of the embodiments. That is, by configuring the handle 4 to be foldable and the tire 21 to be integrally removable with the tire frames 27, 27, a more compact packing than in the embodiments can be realized.

In the first embodiment, instead of the fixing screw 8, a pin is inserted into and removed from the fixing plates 6 and 7 to maintain the superposed state of the fixing plates 6 and 7, and thus the use position of the handle 4 is changed. It may be configured to lock.

Further, in the second embodiment, it is also possible to replace the fixing screws 25, 25 or the fixing screw 29 with pull-out pins.

Finally, in the illustrated embodiment, the wheelbarrows 1 and 20 have been described as wheeled carts, but it is needless to say that a wheeled cart having two or more wheels can be similarly applied.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a perspective view of a unicycle with a steering wheel located at a use position as viewed from below.

FIG. 2 is a perspective view of the unicycle as viewed from below, showing a state where a steering wheel is located at a folded position.

3A and 3B are views showing a fixing means of the handle, FIG. 3A is a perspective view showing a fixing screw attached to both fixing plates, and FIG. 3B is a longitudinal sectional view thereof.

FIG. 4 is a perspective view showing a position of a fixing screw when a handle is positioned at a use position, where (A) shows a state where the head of the fixing screw is located in a circular hole, and (B) shows a state in which the screw enters a long slot. FIG.

FIG. 5 is a view showing a second embodiment of the present invention, and is a perspective view illustrating a state in which a tire is removed as viewed from below.

FIG. 6 is a view showing a second embodiment of the present invention;
It is a side view showing the state where a tire was attached.

FIG. 7 is an overall perspective view of a conventional unicycle.

FIG. 8 is an exploded perspective view of a conventional unicycle.

FIG. 9 is a side view showing a state in which a tire is removed from a front end of a frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Unicycle (1st Embodiment) 2 ... Tray 3 ... Frame 3a ... Support cylinder 4 ... Handle 5 ... Tire 6 ... Fixing plate, 6a ... Long slot, 6b ... Circular hole 7 ... Fixing plate, 7a ... Long slot 8 ... fixing screw, 8a ... head, 8b ... step portion, 8c ... screw portion 9 ... knob 20 ... unicycle (second embodiment) 21 ... tire 22 ... tray 23 ... frame 24 ... support cylinder 25 ... fixing screw 26 ... fixing Plate, 26a: Screw hole 27: Tire frame, 27a: Groove 28: Fixing plate 29: Fixing screw

Claims (3)

[Claims] 1. A hand cart including a tray on which a load is placed, a frame for receiving the tray, a handle extending rearward from the frame for gripping by a person, and a tire rotatably mounted on the frame. A cart having a structure in which the handle is foldable with respect to the frame, and can be taken out of the folding position and fixed to a use position. 2. The cart according to claim 1, wherein a fixing plate is provided on a frame and a handle, and when the handle is taken out of the frame with respect to the use position, the two fixing plates are overlapped. A cart having a configuration in which the handle is fixed and held in a use position. 3. A tray for carrying luggage, a frame for receiving the tray, a handle extending rearward from the frame for gripping by a person, and a tire rotatably mounted on a front portion of the frame. A cart, wherein the tire is attached to a front portion of the frame via a tire frame detachably attached to a front portion of the frame.