JP2016034821A - Hand-push carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve loading and unloading workability of a heavy object and further provide a measure for expanding the application, when using a conventional hand-push carriage.SOLUTION: In a hand-push carriage including a load-carrying platform 1 and a main wheel 2 which is arranged under the load-carrying platform 1 and mounted at both ends of a shaft, an auxiliary wheel support leg 4 is rotatably mounted at a front end of the load-carrying platform 1. Thereby, an auxiliary wheel 3 can be lifted and lowered, and the auxiliary wheel 3 is lifted and lowered by a rod 7 for an auxiliary wheel support leg operation. With such a structure, the front end of the load-carrying platform 1 can be tilted until the front end comes into contact with a floor or the ground surface in a non-use state of the auxiliary wheel 3, thereby improving loading and unloading workability of a heavy object. Further, the hand-push carriage can be used in the same way as a normal carriage in a use state of the auxiliary wheel 3. For example, a legless chair is mounted, thereby enabling the use of the hand-push carriage when transporting a person in need of care in emergency.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hand cart that is used for farm work, construction sites, and the like and transports various loads, and more particularly to a hand cart that has a structure suitable for loading and unloading heavy objects.

  In construction work, civil engineering work, farming work, etc., a small cart with a single wheel or a pair of wheels provided on both ends of the same shaft, which can be operated by hand, is often used, and is called a cat car. Sometimes. This name is said to be due to the characteristic of being able to enter a small place like a cat.

  FIG. 2 shows an example of such a hand cart with one wheel. As shown in FIG. 2, the one-wheel handcart has a wheel 14 attached to the front of the loading platform 13, and a handgrip handle 16 attached to the rear of the loading platform 13, and between the handrail 16 and the loading platform 13. In general, the support 15 is attached.

  Since the center of gravity of this handcart is behind the wheel 14, when loading luggage or earth and sand, the wheel 14 and the support column 15 support the whole, and when moving, the lower end of the support column 15 reaches a height at which it is separated from the ground. The push handle 16 is lifted and pushed by hand. In addition, the handcart shown in FIG. 2 has another support column (not shown) on the back side of the drawing sheet, and the loading platform 13 is supported by the wheel 14 and the two support columns 15. .

  As a problem caused by such a structure, in order to place a heavy load placed on the ground or floor surface on the loading platform 13, it is necessary to lift the heavy load to the height of the upper edge of the loading platform 13, and a crane or the like is required. In places where it cannot be used, it may be necessary to lift only by human power. To cope with this, a method of tilting the loading platform forward until the front edge of the loading platform is in contact with the ground or the floor surface can be considered.

  However, in the conventional hand cart shown in FIG. 2, when the hand grip 16 is lifted until the front portion of the loading platform 13 is in contact with the ground or the floor surface, the hand cart becomes almost vertical, and loading and unloading of heavy objects is extremely difficult. It becomes difficult. Patent Document 1 discloses a cat car provided with a stopper for restraining the wheels from moving when the cargo bed is tilted forward. However, even with such a structure, the above-mentioned problems cannot be sufficiently dealt with.

  In addition, the two-wheeled hand cart has higher upright stability than the one-wheel hand cart shown in FIG. However, as described above, it is difficult to cope with the problem that occurs when a heavy object is loaded. Further, apart from the above-mentioned problems, the increase in options for the means for transporting care recipients in the event of a disaster is required due to the increase in the number of care recipients accompanying the aging of the population in recent years.

  JP 2009-078645 A

  An object of the present invention is to provide measures for improving workability of loading and unloading heavy objects and further expanding applications when using a conventional hand cart as described above.

  In order to solve the previous problem, the present inventor can tilt the loading platform until the front portion of the loading platform is in contact with the ground or the floor surface when loading and unloading heavy objects. As a result of considering that the self-supporting stability can be increased by using more than one, it can be applied to the same use as that of a normal cart.

  That is, the present invention is a hand cart having a loading platform, main wheels attached to both ends of an axle disposed at a substantially central lower portion of the loading platform, and a handle for hand pushing joined to a rear portion of the loading platform. The auxiliary wheel support leg is attached to a rotating shaft disposed substantially at the front end of the loading platform, the auxiliary wheel is attached to the tip of the auxiliary wheel support leg, and one end is the auxiliary wheel support. The other end pivotally attached to the center of the leg and formed with an operating handle is joined to the auxiliary wheel supporting leg operating rod arranged at the rear part of the cargo bed and the auxiliary wheel supporting leg operating rod. And at least two locking protrusions formed on the side of the loading platform on which the auxiliary wheel support leg operating rod is disposed, for locking the locking protrusions. And a member. , It is a hand truck.

  Further, the present invention is the hand cart described above, wherein the hand grip is pivotally attached to a rear portion of the cargo bed, and a tip thereof is rotatable to the front portion of the cargo bed.

  In the handcart according to the present invention, the number of wheels can be changed in the range of 2 to 4 as required by operating the auxiliary wheel support leg operation rod, so that in the state of two wheels, The loading platform can be tilted until the front end is in contact with the floor or the ground, and in a three-wheel or four-wheel state, self-supporting stability can be ensured.

  Therefore, the workability of loading and unloading heavy objects in the state of two wheels is improved, and in the state of three or four wheels, it can be used in the same manner as an ordinary cart. For example, by mounting a seat chair, It can also be used to transport care recipients.

  The figure which shows an example of the handcart which concerns on this invention, Fig.1 (a) is the use condition of an auxiliary wheel, FIG.1 (b) is the non-use condition of an auxiliary wheel.   The figure which shows an example of the conventional handcart.

  Next, embodiments of the present invention will be described with reference to specific drawings.

  1A and 1B are diagrams showing an example of a hand cart according to the present invention, in which FIG. 1A shows a use state of auxiliary wheels, and FIG. 1B shows a non-use state of auxiliary wheels. In the figure, 1 is a loading platform, 2 is a main wheel, 3 is an auxiliary wheel, 4 is an auxiliary wheel support leg, 5 is a pivot shaft, 6 is a pivoting portion, 7 is a support leg operating rod, 8 is an operating handle, 9a is a first locking projection, 9b is a second locking projection, 10 is a locking member, 11 is a hand grip, and 12 is a hand grip rotation shaft.

  In the example shown in FIG. 1, main wheels are provided on both sides of the loading platform 2, and a pair of auxiliary wheels are provided on both ends of the rotating shaft 5, that is, on the front and back of the drawing sheet. In the state where the auxiliary wheel 3 is used, the first locking protrusion 9a is engaged with the locking member 10 joined and fixed to the side of the cargo bed 1, so that the auxiliary wheel 3 swings. It is fixed without any problem and a stable self-supporting state is obtained. Here, an example is shown in which a pair of auxiliary wheels are provided. However, if three points are basically supported, a self-supporting state can be obtained, so only one auxiliary wheel may be provided.

  Further, when the auxiliary wheel 3 is not in use, the second locking projection 9b is engaged with the locking member 10, so that the two-wheel state is maintained and can be used as a normal two-wheeled hand cart. . Further, when the auxiliary wheel 3 is not in use, it can be tilted until the front end of the loading platform comes into contact with the ground or the floor surface, so that the workability of loading and unloading heavy objects is improved as described above.

  Here, the handle 11 for pushing the hand is bent toward the front end of the loading platform 1 when the auxiliary wheel 3 is used, and is extended to the rear of the loading platform 1 when the auxiliary wheel 3 is not used. Although shown, of course, the handle 11 for pushing can be bent or extended irrespective of the arrangement state of the auxiliary wheels 3.

  As described above, according to the present invention, it is possible to provide a hand cart corresponding to improvement in workability of loading and unloading heavy objects and further expansion of applications. The present invention is not limited to the above-described embodiment, and does not depart from the gist of the present invention, including various modifications and corrections that can be conceived by those having ordinary knowledge in the field of the present invention. Of course, even if there is a design change in the range, it is included in the present invention.

DESCRIPTION OF SYMBOLS 1,13 ... Loading platform 2,14 ... Main wheel 3 ... Auxiliary wheel 4 ... Auxiliary wheel support leg 5 ... Rotating shaft 6 ... Pivoting part 7 ... Auxiliary wheel support Rod for leg operation 8 ... handle for operation 9a ... first protrusion for locking 9b ... second protrusion for locking 10 ... locking members 11, 16 ... handle for pushing 12... Push handle pivot shaft 15...

Claims (2)

  In a hand cart having a cargo bed, main wheels attached to both ends of an axle disposed at a substantially lower center of the cargo bed, and a handle for hand pushing joined to a rear portion of the cargo bed, Auxiliary wheel support leg attached to the rotating shaft arranged at the front end, an auxiliary wheel attached to the tip of the auxiliary wheel support leg, and one end at a substantially central part of the auxiliary wheel support leg The other end, which is pivotally attached and has an operating handle formed thereon, is connected to the auxiliary wheel supporting leg operating rod arranged at the rear part of the loading platform, and at least two auxiliary wheel supporting leg operating rods. And a locking member for locking the locking protrusion, which is provided on a side of the loading platform on which the auxiliary wheel support leg operating rod is disposed. A handcart that features   The hand cart according to claim 1, wherein the hand grip is pivotally attached to a rear portion of the cargo bed, and a tip thereof is rotatable to a front portion of the cargo bed.

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