JP4586036B2 - Wheelbarrow - Google Patents

Description

The present invention relates to a wheelbarrow.

A wheelbarrow instead of a cane is generally used when an elderly person goes on a walk or shopping.
For example, when shopping in a large store such as a supermarket or a home center, the product to be purchased is put in a shopping basket installed in the store, taken to a checkout office, and after being settled, it is brought home. However, in this type of store, shopping carts that can carry shopping baskets are usually placed so that even heavy items can be easily carried to the checkout office.

On the other hand, elderly people with weak legs are able to shop at such large stores with so-called wheelbarrows that allow them to walk safely by holding the operation handle with their hands and supporting the body. I go to a large store, put a wheelbarrow at the entrance of the store, etc., and try to go around the store while pushing the shopping cart.

However, depending on the store, there is no space to put a wheelbarrow, and some people are worried about being taken away by others if they are left out of their eyes. There are times when you go around the store and go shopping.
However, in the case of a conventional wheelbarrow, since the shopping cart is simply placed on the seat, the shopping cart may fall off the seat unless the shopping basket is supported by hand. As well as worsening, there are safety issues.

Therefore, in light of these circumstances, if the user gets tired of walking, he / she goes to a large store with a wheelbarrow equipped with a seat so that he can sit instead of a chair, and the shopping cart placed in the large store slips down. As a handcart that can be installed without any problem, as shown in Patent Document 1, wheels are provided at the lower four corners, and an article storage bag is fixed to a base provided with a push-pull handle on the front side, and a supermarket or the like In the prior art, there has been proposed a basket receiving portion on which a shopping basket is placed so as to be swingable with respect to a base.

However, in such a case, when placing a shopping cart, the upper part of the article storage bag fixed to the base is removed and folded, and then the basket receiving portion is folded and swung so as to protrude above the article storage bag. In particular, the preparation for the elderly was troublesome, and there was a problem in practical use.

In addition, the basket receiving portion that has been swing-operated so as to protrude upward from the article storage bag is in a cantilever state, so that it is weak in strength and has a problem in durability.

Furthermore, there is a problem that the article loading / unloading port of the bag for storing articles is small at one upper position, which is extremely inconvenient for taking in and out bulky items.
JP 2002-67972 A

The present invention has been proposed in view of the above-mentioned problems. The opening / closing operation of the bag for storing articles is easy, the bulky one can be opened large so that it can be easily stored, and the durability is excellent. The purpose is to provide a wheelbarrow.

In order to achieve the above object, the handcart according to the present invention is a bag for supporting the upper end of an article storage bag on a base provided with wheels at the lower four corners and a handle for pushing and pulling on one side. In a wheelbarrow provided with a frame and an article storage bag attached to the bag frame, the article storage bag is provided with a lid that can be opened and closed at the upper end opening, and the bag frame is formed in a U-shape. The left and right end portions are connected to the rear wheel frame via the handle frame, and the front end is pivotally supported on the front wheel frame so that the bag frame is substantially horizontal. Provided at the top is a first swing frame for mounting a lid for opening and closing the upper end opening of the article storage bag, and a second swing frame inside the first swing frame; One of the parts is supported by a first swing frame pivotally supported by the bag frame, and the other is supported by a second swing frame pivotally supported by the first frame. When the first swing frame is swung forward, the swing pivot portion of the first swing frame is used for the bag so that a part of the first swing frame protrudes to the front of the bag frame. The second swing frame is pivotally supported at a position deviated forward from the center in the front-rear direction of the frame, and the first swing frame is pivotally supported by the second pivot portion of the first swing frame. The main feature is that a part of the second swing frame is received by the front end portion of the bag frame when it is not flipped up and swinged forward .

In the handcart according to the present invention, when the first swing frame is swung, a part of the front portion or the rear portion of the lid supported by the first swing frame protrudes out of the bag frame. The swing pivot of the first swing frame is provided at a position offset from the center of the bag frame, the lid can be used as a seat, and when the wheelbarrow is not used, It is also characterized in that the base is configured to be foldable in the direction in which the wheels are close.

According to the handcart of the present invention, a lid that can be opened and closed is provided at the upper end opening of the article storage bag,
The bag frame is formed in a U-shape, the left and right end portions are connected to the rear wheel frame via the handle frame, and the front portion is positioned so that the bag frame is substantially horizontal. The first swing frame and the first swing frame are mounted on the upper portion of the bag frame so that a lid for opening and closing the upper end opening of the article storage bag is mounted on the upper portion of the bag frame. A moving frame is provided, and either one of the rear part and the front part of the lid is supported by a first oscillating frame pivotally supported by a bag frame, and the other can be oscillated by the first frame. So that when the first swing frame is swung forward, a part of the first swing frame protrudes forward of the bag frame. Swing pivot part of one swing frame for bag The second swing frame is pivotally supported at a position deviated forward from the center of the frame in the front-rear direction. The first swing frame is pivotally supported by the second pivot portion of the first swing frame. Since it is configured so that a part of the second swing frame is received by the front end portion of the bag frame when it is not flipped up and swinged forward, the opening area of the entrance / exit is the size of the goods to be stored. There is an advantage that the switching operation can be easily performed in accordance with.

Further, when the first swing frame is swung, the first swing frame so that a part of a front portion or a rear portion of the lid attached to the first swing frame protrudes out of the bag frame. Is provided at a position offset from the center of the bag frame, so that the first swing frame is swung so that a part of the front part or rear part of the lid protrudes outside the bag frame. Since a wide shopping cart receiving surface is formed here, the shopping cart can be stably placed on the wide shopping cart receiving surface.
Thereby, there is no fear that the shopping cart slides down from the seat, and there is an advantage that the operability of the wheelbarrow is improved and the safety can be increased.

Furthermore, the bottom of the shopping cart is supported by a bag frame and a first frame that support the upper end of the article storage bag, and is more rigid than a cantilevered one, and the durability of a handcart. There is also an advantage that can be made high.

In addition, in the case where the lid can be used as a seat portion, in addition to the effects of the above-described invention, the first swing frame is swung to move the lid to the vertical position forward or backward. There is also an advantage that it is possible to prevent the gravy or moisture leaking from the shopping basket placed on the receiving surface from adhering to the seat and to keep the seat in a clean state.

Further, in the structure in which the base can be folded in the direction in which the front and rear wheels approach each other when the handcart is not used, there is an advantage that the convenience of storage can be enhanced in addition to the effects of the above invention.

Hereinafter, the most preferred embodiment according to the handcart of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view of a handcart according to the present invention, and FIG. 2 is a configuration diagram of a frame of the handcart. Reference numeral 1 in the drawing denotes the whole handcart.
The wheelbarrow 1 includes a front wheel frame 2, a rear wheel frame 3, a handle frame 4, and a bag frame 5, and a base frame is formed on the bag frame 5. The upper end of is supported.

The handle frame 4 is formed by bending a metal pipe into a U-shape that opens downward, and a handle 8 for pushing with a grip cover 7 fitted to a horizontal upper side portion 4a is formed. It is connected to a rear end portion of a link rod 9 extending rearward from a front wheel frame 2 to be described later, and is connected to a rear wheel frame 3 via a support plate 11 of a posture fixture 10.
A backrest member 12 is provided below the hand push handle 8 over the left and right portions 4b of the handle frame 4. An operation lever 14 of a brake device 13 (to be described later) is pivotally supported in the vicinity of the hand push handle 8. The lower end is in contact with the upper surface of the rear wheel frame 3 so that the downward movement is fixed.

The frame 2 for the front wheel is formed of a metal pipe, provided with a wheel (front wheel) 15 at the lower end portion, the upper half portion is horizontal, and the end portion is an intermediate height portion of the left and right portions 4b of the handle frame 4 In addition to being pivotally supported, a resin cover 16 is attached to the horizontal portion to form an elbow rest portion 17, and a pair of these is provided on the left and right.
This wheel 15 has a front wheel bearing member 18 rotatably attached to the lower end portion of the front wheel frame 2, and the front wheel bearing member 18 is provided with wheels 15 on the left and right, respectively. A fixing lever 19 is provided for holding the motor.

The rear wheel frame 3 is formed of a substantially straight metal pipe, the upper end is pivotally supported at the intermediate height position of the front wheel frame 2, and the wheel 20 is rotatably attached to the lower end.
When the operation lever 14 of the brake device 13 provided in the vicinity of the hand handle 8 is operated on the wheel 20, a braking tool 21 that contacts the outer peripheral surface and suppresses rolling of the wheel 20 is provided. It is provided.
That is, the brake device 13 is pivotally supported by the left and right portions of the rear wheel frame 3 via the release wire 22 when the operation lever 14 is pulled forward (in a direction approaching the handle 8 for pushing). The tip of the brake tool 21 comes into contact with the outer peripheral surface of the wheel 20 to restrict rolling.
Incidentally, although not shown in detail, the wheel (rear wheel) 20 is provided with a lock device 23 in addition to the brake device 13.
The lock device 23 is fitted into a lock lever 24 pivotally supported at an intermediate portion of one rear wheel frame 3 and a fitting recess provided in the vicinity of the axle of the wheel 20 via a rod 25 on the lock lever 24. And a fitting portion (both not shown).

The bag frame 5, formed by bending a metal pipe into a U-shape, the ends 5a of the left and right side, is connected to the rear wheel frame 3 via the left and right portions 4b of the handle frame 4 Rutotomoni, previously The front end portion 5b is mounted so as to be substantially horizontal with the front end portion 5b protruding forward from the front wheel frame 2 by pivotally supporting the shift portion on the front wheel frame 2.
The upper part of the bag frame 5 is provided with a first swing frame 25 for swinging a lid for opening and closing the upper end opening 6 a of the article storage bag 6, and a second inward of the first swing frame 25. A swing frame 26 is provided (see FIGS. 2 and 3).

When the first swing frame 25 is swung forward, the front or rear part of the lid 27 supported by the first swing frame 25 is used for the bag. When left and right end portions (swinging pivot support portions) 28 of the first swing frame 25 are provided at positions deviated forward from the center in the front- rear direction of the bag frame 5 so as to protrude out of the frame 5 and do not swing. A U-shaped intermediate portion 25 a is received by a bag support rod 29 provided between the ends of the bag frame 5.
The second swing frame 26 has its left and right end portions (swing pivot support portions) 30 pivoted on the rear half of the first swing frame 25 , and the first swing frame 25 is not swung up and swinged forward. when the intermediate portion 26a of the second swing frame 26 of U-shaped are adapted to be received in a front end portion 5b of the bag frame 5.
Incidentally, the length L1 of the second swing frame 26 and the length from the swing pivotal support portion 30 of the second swing frame 26 to the intermediate portion (side to be the rear end in FIG. 2) 25a of the first swing frame 25. The ratio with L2 is approximately 3: 1.

The article storage bag 6 is mounted on the bag frame 5 of the handcart 1 formed as described above, and is mounted across the first swing frame 25 and the second swing frame 26.
That is, as shown in FIG. 1, the article storage bag 6 is formed in a square box shape whose upper end is opened with a synthetic resin sheet whose back surface is reinforced with a cloth or the like, and a mounting bracket (hook) is formed in the upper end opening 6a. ) 31 is provided, and the tongue 32 is turned from the outside of the bag frame 5 to the inside and fixed by the mounting bracket 31.

The lid 27, those in a state interposed cushion material on the surface of the core material (both not shown) covered with the same material as the article storage bag 6, the front as shown in FIG. 1 (C1) 27a and the rear part (C2) 27b are formed so as to be bendable at a portion having a ratio of about 3: 1. The rear part 27b of the lid 27 is attached to the first swing frame 25, and the second swing frame 26 The front part 27a of the lid 27 is attached.
In FIG. 1, reference numeral 33 denotes a lid operating string provided at the end of the front portion 27 a of the lid 27.

Next, a procedure for using the handcart assembled as described above will be described.
First, when an elderly person goes out for a walk or shopping using the wheelbarrow 1, the wheelbarrow 1 is pushed forward as a walking stick with a handle for pushing.
And when tired, after fixing the wheel (rear wheel) 20 of the handcart 1 with the locking device 23, it turns forward and falls on the lid 27 and rests.

Next, when shopping at a supermarket or the like, from the state shown in FIG. 1, the lid operating string 33 is lifted diagonally forward, the first swing frame 25 is swung, and the entire cover 27 is pulled forward, so that the cover operation is performed. Release the string 33.
Then, the lid 27 is bent at the boundary portion between the front portion 27a and the rear portion 27b, and the front portion 27a of the lid 27 is perpendicular to the front surface of the article storage bag 6 as shown in FIG. The rear portion 27b is in a state where its rear surface is an upper surface and protrudes forward of the bag frame 5.

Thus, when the rear portion 27b of the lid 27 protrudes to the front of the bag frame 5, a wide receiving surface of the shopping cart 34 is formed here, so that even a large shopping cart 34 provided in a supermarket or the like has this wide area. It can be placed in a stable state on the receiving surface and can be purchased.
The liquidated product may be directly transferred from the shopping basket 34 to the article storage bag 6 that is wide open, or the lid 27 is temporarily returned to the original state as shown in FIG. As shown in FIG. 5, only the front portion 27a of the lid 27 can be flipped up, and the product can be put into the article storage bag 6 through the opening of the portion.

In the handcart 1 according to the present invention, the front wheel frame 2, the rear wheel frame 3, the handle frame 4, and the bag frame 5 constituting the base form a quadruple link, and the corner connection Since the wheel is pivotally supported, when the wheelbarrow 1 is not used or when it is shipped from the manufacturer, it is folded so that the front and rear wheels 15 and 20 are close to each other as shown in FIG. The bulk can be reduced, and the transportation cost can be reduced.
Further, in the above embodiment, the lid 27 is greatly opened forward, but the first swing frame 25 can be attached to the bag frame 5 in the opposite direction to the above. The lid 27 can be greatly opened rearward.
Furthermore, it goes without saying that the ratio of the front and rear of the lid 27 is not limited to 3: 1, and that the wheelbarrow according to the present invention is not necessarily limited to those used by the elderly. Of course.

1 is an overall perspective view of a handcart according to the present invention. It is a block diagram of the frame of the handcart in the state of FIG. It is a perspective view in the state where the lid of the handcart concerning the present invention was fully opened. It is a block diagram of the frame of the handcart in the state of FIG. It is a perspective view in the state where the front part of the lid of the handcart concerning the present invention was opened. It is a block diagram of the frame of the handcart in the state of FIG. The side view of the state which folded the handcart concerning this invention.

DESCRIPTION OF SYMBOLS 1 ... Wheelbarrow 2 ... Front wheel frame 3 ... Rear wheel frame 4 ... Handle frame 5 ... Bag frame 6 ... Bag 8 ... Hand push handle 15 Front wheel 25 ... first swing frame 26 ... second swing frame 27 ... lid 28 ... first swing frame swing pivot 30 ... second swing frame swing Pivotal branch 34 ... shopping cart

Claims (4)

A wheel frame for supporting the upper end of the article storage bag is provided on the base having wheels at the lower four corners and a handle for pushing and pulling on one side, and the article storage bag is attached to the bag frame. In the handcart, the article storage bag is provided with a lid that can be opened and closed at the upper end opening, the bag frame is formed in a U-shape, and the left and right end portions are located behind the handle frame. A lid that is connected to the wheel frame, pivots the front end portion to the front wheel frame so that the bag frame is substantially horizontal, and opens and closes the upper end opening of the article storage bag at the top of the bag frame A first swing frame and a second swing frame are provided on the inner side of the first swing frame, and either the rear part or the front part of the lid can swing to the bag frame. In When the other swing frame is supported by the supported first swing frame and the other is supported by the second swing frame pivotally supported by the first frame, and the first swing frame is swung forward. The swing pivot support portion of the first swing frame is pivotally supported at a position offset forward from the front / rear center of the bag frame so that a part of the first swing frame protrudes forward of the bag frame. The second swing frame pivotally supports the swing support portion of the second swing frame on the rear half portion of the first swing frame. A wheelbarrow characterized in that a part of the wheelbarrow is received by the front end portion of the bag frame . When the first swing frame is swung forward and moved forward, the upper end opening of the article storage bag attached to the bag frame is fully opened, and the bag frame and the bag attached with the article storage bag The handcart according to claim 1, wherein the cart is configured to form a receiving surface of a shopping basket with the first frame protruding forward of the frame . The handcart according to claim 1 or 2, wherein a lid that covers an upper end opening of an article storage bag mounted on a bag frame is usable as a seat. The handcart according to any one of claims 1 to 3 , wherein the base is foldable in a direction in which front and rear wheels approach each other when the handcart is not used.

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