JP2021175665A - Handcart - Google Patents

Abstract

To provide a handcart easy to use in comparison with a conventional one.SOLUTION: A handcart 100 comprises: right and left front wheels 141R and 141L; right and left front wheel frames 151R and 151L supporting the right and left front wheels, respectively; right and left rear wheels 142R and 142L; right and left rear wheel frames 152R and 152L supporting the right and left rear wheels, respectively; a basket 130; a right-side handle frame 110R having an inverted L shape as viewed from a side; and a left handle frame 110L having an inverted L shape as viewed from a side.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wheelbarrow technique, and more particularly to a wheelbarrow technique having a basket.

Conventionally, wheelbarrows for assisting the walking of elderly people have been known. Some such wheelbarrows can carry a shopping cart. For example, Japanese Patent Application Laid-Open No. 2017-193338 (Patent Document 1) discloses a wheelbarrow. According to Patent Document 1, a wheelbarrow including a basket and a holding member arranged in front of the basket and reaching above the basket is provided. The restraining member is configured so that its lower portion is pivotally supported near the lower portion of the basket so that the upper portion can be moved forward by a predetermined amount, whereby the back surface of the upper portion is placed above the basket. It is configured so that it can come into contact with the front of the basket.

JP-A-2017-193338

An object of the present invention is to provide a wheelbarrow that is easier to use than before.

According to a certain aspect of the present invention, the left and right front wheels, the left and right front wheel frames supporting the left and right front wheels, the left and right rear wheels, the left and right rear wheel frames supporting the left and right rear wheels, a basket, and the like. A cross-linking frame for cross-linking the left and right rear wheel frames to increase the strength of the left and right rear wheel frames is provided, and the cross-linking frame is located at the lower part of the rear wheel frame and is curved in a convex shape toward the front side. The rear end portion of the cage is connected to the crosslinked frame, and the cage is rotatable about the rear end portion of the cage and can be folded in the front-rear direction.

As described above, according to the present invention, a wheelbarrow that is easier to use than the conventional one is provided.

It is a front perspective view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a front view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a rear view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a left side view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a right side view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a top view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a bottom view which shows the whole structure of the wheelbarrow 100 which concerns on 1st Embodiment. It is a left side view which shows the state which the handle of the wheelbarrow 100 which concerns on 1st Embodiment is lowered. It is a left side view which shows the state which the lid 120 of the basket 130 of the wheelbarrow 100 which concerns on 1st Embodiment is opened. FIG. 5 is a left side view showing a state in which the basket 130 of the wheelbarrow 100 according to the first embodiment is lifted, that is, a state in which the wheelbarrow 100 is folded in the front-rear direction. It is a front perspective view which shows the shopping cart mountable state of the wheelbarrow 100 which concerns on 1st Embodiment. It is an exploded perspective view of the basket 130 which concerns on the 1st Embodiment. It is a rear perspective view which shows the side frame 139 which concerns on 1st Embodiment. It is a rear perspective view which shows the front side plate 1351 of the front frame 135 which concerns on 1st Embodiment. It is a front perspective view which shows the rear side plate 1352 of the front frame 135 which concerns on 1st Embodiment. It is a top view which shows the shopping cart mountable state of the wheelbarrow 100 which concerns on 1st Embodiment. It is (A) plan view and (B) AA sectional view which shows the support member 121R, 121L of the wheelbarrow 100 which concerns on 1st Embodiment when it is not used. It is (A) plan view and (B) CC sectional view which shows the use time of the support member 121R, 121L of the wheelbarrow 100 which concerns on 1st Embodiment. It is a left side view which shows the whole structure of the wheelbarrow 100 which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are the same. Therefore, the detailed description of them will not be repeated.
[First Embodiment]

With reference to FIGS. 1 to 7, the wheelbarrow 100 according to the present embodiment mainly includes front wheels 141L, 141R, rear wheels 142L, 142R, left and right handles 110L, 110R, a basket 130, and a lid. It has 120 and. The user can walk while holding the grip portions 111L and 111R of the left and right handles 110L and 110R and pushing the wheelbarrow 100.

Further, in the wheelbarrow 100 according to the present embodiment, as shown in FIG. 8, the heights of the left and right handles 110L and 110R are adjusted, and as shown in FIG. 9, the lid 120 is lifted to load the load into the basket 130. Insert the wheelbarrow 100 as shown in FIG. 10, fold the wheelbarrow 100 in the front-rear direction, and spread the support members 121L and 121R from the lid 120 in the left-right direction and place the shopping cart 200 on the upper surface of the lid 120 as shown in FIG. It can be placed. Hereinafter, the configuration of the wheelbarrow 100 according to the present embodiment will be described in detail.

In the following, the members on the left side of the wheelbarrow 100 are designated by "L" and the members on the right side are designated by "R". However, the members common to the left and right are collectively referred to as "R". ”And“ L ”are not added in the explanation. Further, in the following, the traveling direction of the wheelbarrow 100 is simply referred to as forward, the opposite of the traveling direction is simply referred to as rearward, the vertically upward direction of the wheelbarrow 100 is simply referred to as upward, and the vertically downward direction is simply referred to as downward. The right side from the user who is using the car 100 in the direction of travel is simply referred to as the right side, and the left side in the direction of travel from the user is simply referred to as the left side.

Further, in the following, the state in which the user pushes and walks is referred to as a normal state of the wheelbarrow 100. The state in which the shopping cart is placed on the lid 120 is referred to as a placement state. The state of being compactly folded in the front-back direction is called the folded state.

With reference to FIGS. 1 to 7, the wheelbarrow 100 according to the present embodiment has a pair of front wheel frames 151L and 151R and a pair of rear wheel frames 152L and 152R. A pair of front wheels 141L and 141R are attached to the lower ends of the front wheel frames 151L and 151R, respectively. A pair of rear wheels 142L and 142R are attached to the lower ends of the rear wheel frames 152L and 152R, respectively.

The upper end of the left front wheel frame 151L is rotatably connected to the front of the connecting member 154L, and the upper end of the rear wheel frame 152L is fixed to the rear of the connecting member 154L. Similarly, the upper end of the right front wheel frame 151R is rotatably connected to the front of the connecting member 154R, and the upper end of the rear wheel frame 152R is fixed to the rear of the connecting member 154R.

A vertical frame 153L is inserted through the connecting member 154L in a substantially vertical direction, and is configured to be fixed at a plurality of locations. A vertical frame 153R is inserted through the connecting member 154R in a substantially vertical direction, and is configured to be fixed at a plurality of locations. By adjusting the insertion amount of the vertical frames 153L and 153R with respect to the connecting members 154L and 154R, the user adjusts the heights of the left and right handles 110L and 110R, that is, the heights of the grip portions 111L and 111R, as shown in FIG. You can adjust the height to suit you.

Grip portions 111L and 111R are attached to the upper ends of the vertical frames 153L and 153R. Brake levers 112L and 112R are provided below the left and right grips 111L and 111R. In the present embodiment, the left vertical frame 153L, the left grip portion 111L, and the left brake lever 112L are collectively referred to as a handle 110L. The left handle 110L is formed in an inverted L shape when viewed from the side. Similarly, the vertical frame 153R on the right side, the grip portion 111R on the right side, and the brake lever 112R on the right side are collectively referred to as a handle 110R. The handle 110R on the right side is formed in an inverted L shape when viewed from the side.

A lower horizontal frame 159 is connected between the front wheel frames 151L and 151R. A cross-linked frame 161 is connected between the rear wheel frames 152L and 152R. The crosslinked frame 161 is formed in a U-shape or a convex shape in a plan view and a bottom view so as not to hinder the walking of the user while increasing the strength of the rear wheel frames 152L and 152R.

Here, the configuration of the basket 130 will be described in detail. The basket 130 mainly includes a bottom surface 132, a bottom frame 131 that supports the periphery of the bottom surface 132, and a plurality of horizontal relatively thin side frames 139 for surrounding the front, side, and rear surfaces of the storage space of the basket 130. , The horizontal and relatively thick upper frame 134 for surrounding the upper front surface, side surface, and rear surface of the storage space of the basket 130, the front frame 135 supporting the front surface of the side frame 139, and the rear surface of the side frame 139. Includes a rear frame 136 to support.

In the present embodiment, the basket 130 is located in front of the vertical frames 153L, 153R, that is, the handles 110L, 110R. More specifically, in the plan view and the side view, the rear end of the bottom surface 132 is located in front of the vertical frames 153L and 153R. Further, the rear ends of the plurality of side frames 139, the rear ends of the upper frame 134, and the rear ends of the bottom frame 131 are also located in front of the vertical frames 153L and 153R.

Then, in the present embodiment, the left and right rear ends of the upper frame 134 of the basket 130 are pivotally supported by the front portions of the connecting members 154L and 154R. The pivot shaft of the upper frame 134 with respect to the connecting members 154L and 154R and the pivot shaft of the front wheel frames 151L and 151R with respect to the connecting members 154L and 154R are common members.

In the present embodiment, the rear portion of the lid 120 is rotatably provided at the rear portion of the upper frame 134. In the present embodiment, the user tilts the lid 120 forward to close the upper part of the basket 130 as shown in FIG. 8, or lifts the lid 120 rearward and upward as shown in FIG. Can be closed.

The bottom frame 131 of the basket 130 is supported by the lower horizontal frame 159 and the crosslinked frame 161. More specifically, the bottom surface of the front portion of the bottom frame 131 is placed on the upper surface of the lower horizontal frame 159 when the basket 130 is used. The left and right central portions of the rear portion of the bottom frame 131 are supported by the lower portion of the rear frame 136. The left and right portions of the rear portion of the bottom frame 131 are connected to the crosslinked frame 161 via the connecting members 164L and 164R.

Then, the left side portion and the right side portion of the bottom frame 131 are connected to the front wheel frames 151L and 151R via the link members 162L and 162R. That is, one end of each of the link members 162L and 162R is pivotally supported by the lower portion of the front wheel frame 151L and 151R, and the other ends thereof are pivotally supported by the side portion of the bottom frame 131. The rear portions of the left and right link members 162L and 162R and the rear ends of the left and right surfaces of the bottom frame 131 are pulled together by the urging members 163L and 163R.

As shown in FIG. 12, in the present embodiment, the front frame 135 pivots by sandwiching the front portion of the bottom frame 131, the front portion of the plurality of side frame 139, and the front portion of the upper frame 134. Support.

More specifically, as shown in FIG. 13, each of the side frames 139 is a pipe formed in a plan-view "mouth" shape. The side frame 139 goes around and its ends come into contact with each other at the center of the rear part. In the side frame 139, holes 139Y and 139Y are formed in the front central portion, and holes 139X and 139X are formed in the rear central portion, that is, the end portion of the pipe. Bearings 1391 for the front frame 135 are attached to the holes 139Y and 139Y in the central portion of the front portion, and bearings (not shown) for the rear frame 136 are attached to the holes 139X and 139X in the central portion of the rear portion.

The front frame 135 includes a front plate 1351 as shown in FIG. 14 and a rear plate 1352 shown in FIG. As shown in FIG. 14, the front plate 1351 is formed with a plurality of recesses 1351B for passing the plurality of side frames 139 through the left and right side frames 1351A and 1351A. The front plate 1351 is formed with a plurality of ribs 1351C for receiving the plurality of bearings 1391 of the plurality of side frames 139. The front plate 1351 is formed with a plurality of bosses 1351D for attaching the rear plate 1352. In the present embodiment, the front plate 1351 has a grip portion 135X formed at the upper end portion thereof.

As shown in FIG. 15, the rear plate 1352 is formed with a plurality of recesses 1352B for passing the plurality of side frames 139 through the left and right side frames 1352A and 1352A. The rear plate 1352 is formed with a plurality of recesses 1352C for receiving the plurality of bearings 1391 of the plurality of side frames 139. The rear plate 1352 is formed with a plurality of bosses 1352D for attaching the front plate 1351.

Since it is configured in this way, the front central portion of the plurality of side frames 139 is included in the front frame 135, and the front frame 135 can be rotated. In the present embodiment, the front central portion of the upper frame 134 and the front central portion of the bottom frame 131 are also rotatably configured in the front frame 135.

Similarly, within the rear frame 136, the rear central portion of the plurality of side frames 139, the rear central portion of the upper frame 134, and the rear central portion of the bottom frame 131 are rotatably configured.

With this configuration, as shown in FIG. 10, when the user lifts the grip portion 135X of the front frame 135 upward, the bottom frame 131 rotates in the front frame 135 and in the rear frame 136, while the bottom frame 131 rotates. The bottom frame 131 rotates rearward and upward around the connecting members 164L and 164R and the rear frame 136. At this time, similarly, while the side frame 139 rotates in the front frame 135 and the rear frame 136, the side frame 139 rotates rearward and upward with the rear frame 136 as an axis. Similarly, while the upper frame 134 rotates in the front frame 135 and the rear frame 136, the upper frame 134 rotates rearward and upward around the rear frame 136.

At this time, the folding link mechanism composed of the bottom frame 131 and the link members 162L and 162R bends. That is, when the wheelbarrow 100 was used, the link members 162L and 162R were substantially parallel to the bottom frame 131, but when folded, the bottom frame 131 was lifted rearward and upward, so that the link members 162L and 162R were raised with respect to the bottom frame 131. Bends downwards. As a result, the front wheel frames 151L and 151R approach the rear wheel frames 152L and 152R, that is, in a plan view, the front wheel frames 151L and 151R are the rear end of the basket 130, the rear frame 136, the bridge frame 161 and the handles 110L and 110R. It approaches downwards, and as a result, the wheelbarrow 100 is folded back and forth.

Next, with reference to FIGS. 16 to 18, a configuration for placing the shopping cart on the lid 120 of the basket 130 will be described. In the present embodiment, the support members 121L and 121R of the shopping cart are attached to the upper surface of the lid 120. More specifically, as shown in FIG. 17, the support members 121L and 121R are housed at positions closer to each other in the left and right central portions when not in use. In the present embodiment, the support member 121L that passes above the lid 120 and rotates to the left and the support member 121R that passes above and rotates to the right are pivotally supported by the lid 120. That is, in the present embodiment, the support members 121L and 121R rotate from the unused state to the left and right outside like a double door in a plan view, and shift to the used state.

Each of the support members 121L and 121R includes a base portion 1211, a locking portion 1212, and a grip portion 1213, as shown in FIG. 18 (B). As shown in FIGS. 18A and 18B, the lid 120 has recesses 120X and 120X for accommodating the bases 121 and 1211 and recesses 120Y and 120Y for accommodating the locking portions 1212 and 1212. It is formed. As a result, as shown in FIG. 17, when the shopping cart is not placed, only the grip portions 1213 and 1213 protrude upward from the lid 120. The user can grasp the grip portions 1213 and 1213 and easily pull out the support members 121L and 121R upward to rotate the support members 121L and 121R to the outside of the wheelbarrow 100. As a result, as shown in FIG. 18, the locking portions 1212 and 1212 project upward. This makes it easier for the left and right ends of the shopping cart to be locked.
[Second Embodiment]

In the above embodiment, the rear portion of the bottom frame 131 is connected to the cross-linked frame 161 via the connecting members 164L and 164R, but as shown in FIG. 19, the bottom portion is provided by another supporting member 262. The rear part of the frame 131 may be supported. For example, a support member extending downward from the connecting members 154L and 154R may be used, or a support member extending forward from the rear wheel frames 152L and 152R may be used. May be good.

Similarly, in the above embodiment, the rear ends of the urging members 163L and 163R are connected to the cross-linked frame 161. However, the urging members 163L and 163R are also connected to the support member 262. May be good.
[Third Embodiment]

In the above embodiment, the support members 121L and 121R for supporting the shopping cart are attached to the upper surface of the lid 120 of the basket 130, but the grip portions 1213 and 1213 project upward from the lid 120. It may be in a form in which the support member is not provided, or in a form in which the support member slides outward from the side or front of the lid 120. Alternatively, the lid 120 may be just a seat. Alternatively, the lid 120 may be a cloth, a drawstring purse, or the like without having rigidity.
[Other forms]

The shape of the handle frame 110 is an inverted L shape. In the above embodiment, the vertical frame 153 is erected in a substantially vertical direction with respect to the connecting member 154, but it may be inclined from the vertical direction or bent. Further, although the grip portion 111 is located in a direction substantially perpendicular to the vertical frame 153, it may be inclined from the vertical direction or bent. Further, although the connecting frame 113 is bridged to the left and right handle frames 110L and 110R, the position where the connecting frame 113 is bridged is not particularly limited as long as it is any of the positions from the upper end to the lower end of the vertical frame 153. good. For example, the upper end of the vertical frame may be connected to the left and right grip portions 111L and 111R. The shape of the connecting frame 113 is not particularly limited, and may be, for example, an X-shape or a bent shape. Further, the material of the connecting frame 113 is not particularly limited, and although an aluminum material is used in this embodiment, it may be another metal or alloy material, or an organic material.

The rear end of the basket 130 is located in front of the left and right handle frames 110L and 110R, but the rear end may straddle the vertical frames 153L and 153R in a side view (see FIG. 4 and the like). The rear end portion may be located below the grip portions 111L and 11R. However, if the space above the basket is specified so that no constituent members are arranged, for example, as a space for using tall storage items, the rear end of the basket 130 is located in front of the left and right handle frames 110L and 110R. It is good to let.

Further, the positions of the cross-linked frames 161L and 161R in the side view (see FIG. 4 and the like) may be arbitrarily adopted according to the position of the rear end portion of the basket 130. In the side view, the crosslinked frames 161L and 161R are located so as to straddle the vertical frames 153L and 153R in the traveling direction, but may be positioned not to straddle the vertical frames 153 and 153R. The shape of the crosslinked frame 161 is curved in a convex shape toward the front (traveling direction), but the bottom frame 131 is mechanically connected via connecting members 164L and 164R (for example, engaging members). If so, it is not particularly limited. For example, it may be a U-shape that is convexly curved toward the front, a W-shape that has two U-shaped peaks, or a trapezoidal shape.

The side frame 139 constituting the basket 130 has a rectangular pipe in a plan view, but is not particularly limited, and may have a polygonal shape such as a square shape or a triangular shape. Further, the side frame 139 goes around once, and the ends thereof are in contact with each other at the center of the rear portion, but the side frames 139 may be separated from each other. Further, a hole portion 139X is formed in the side frame 139, and a bearing such as a bearing 1391 is attached. However, as another configuration, a member having the same shape as the bearing 1391 without providing the hole portion 139X. May be physically connected to the side frame 139 by welding or the like.
<Summary>

As described above, the left and right front wheels 141L and 141R, the left and right front wheel frames 151L and 151R that support the left and right front wheels, the left and right rear wheels 142L and 142R, and the left and right rear wheels are supported according to the above embodiment. Provided by the wheelbarrow 100, which includes left and right rear wheel frames 152L and 152R, a basket 130, an inverted L-shaped right handle frame 110R in side view, and an inverted L-shaped left handle frame 110L in side view. Will be done.

Preferably, the rear end of the basket 130 is located in front of the right handle frame 110R and the left handle frame 110L.

Preferably, the basket 130 is foldable in the front-rear direction. When folded, the left and right front wheel frames 151L and 151R approach the right handle frame 110R and the left handle frame 110L in a plan view.

Preferably, the basket 130 is rotatable about the rear end of the basket 130 and can be folded in the front-rear direction. By bending the bendable connecting links 162L and 162R that connect the front wheel frames 151L and 151R and the rear end portion of the basket 130, the left and right front wheel frames 151L and 151R approach the rear end portion of the basket 130.

Preferably, the wheelbarrow 100 includes a bridge frame 161 that is curved forward to bridge the left and right rear wheel frames 152L and 152R. The rear end of the basket 130 is connected to the cross-linking frame 161.

Preferably, the wheelbarrow 100 has a lid 120 of the basket 130, a right support member 121R arranged on the upper surface of the lid 120 and rotatable to the right of the basket 130, and a left rotatable to the left of the basket 130. A support member 121L is further provided.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

100: Wheelbarrow 110L: Handle (left handle frame)
110R: Handle (right handle frame)
111L: Grip part 111R: Grip part 112L: Brake lever 112R: Brake lever 120: Lid 120X: Recessed part 120Y: Recessed part 121L: Left support member 121R: Right support member 130: Basket 131: Bottom frame 132: Bottom surface 134: Upper part frame 135: Front frame 135X: Grip part 136: Rear frame 139: Side frame 139X: Hole part 139Y: Hole part 141L: Front wheel 141R: Front wheel 142L: Rear wheel 142R: Rear wheel 151L: Front wheel frame 151R: Front wheel frame 152L: Rear Wheel frame 152R: Rear wheel frame 153L: Vertical frame 153R: Vertical frame 154L: Connecting member 154R: Connecting member 159: Lower horizontal frame 161: Bridge frame 162L: Link member 162R: Link member 163L: Bending member 163R: Bending member 164L: Connecting member 164R: Connecting member 200: Shopping cart 262: Support member 1211: Base portion 1212: Locking portion 1213: Grip portion 1351: Front side plate 1351A: Side frame 1351B: Recessed portion 1351C: Rib 1351D: Boss 1352: Rear side Plate 1352A: Side frame 1352B: Recess 1352C: Recess 1352D: Boss 1391: Bearing

Claims (1)

Left and right front wheels,
The left and right front wheel frames that support the left and right front wheels,
Left and right rear wheels,
The left and right rear wheel frames that support the left and right rear wheels, and
With a basket
It is provided with a cross-linking frame for cross-linking the left and right rear wheel frames and increasing the strength between the left and right rear wheel frames.
The crosslinked frame is located at the lower part of the rear wheel frame and has a shape that is convexly curved toward the front side.
The rear end of the basket is connected to the crosslinked frame and
The wheelbarrow is a wheelbarrow that can be folded in the front-rear direction by rotating around the rear end of the basket.

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