JP3068224U - Wheelbarrow - Google Patents

Abstract

(57) [Abstract] [Problem] To easily push a hand cart or the like over a step or unevenness such as a floor surface. A foot pedal (4) is rotatably fixed to a handle (3) of a vehicle body (1). Overcoming member 6 on the other side
To be rotatable. Both are connected by a tension member such as a flat bar 8. When the vehicle collides with a step or the like, the foot pedal 4 is depressed to raise the riding member 6 and the traveling wheel 2 is lifted. If you move forward as it is, you can easily get on the step.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention generally relates to a vehicle that is pushed by human power and travels, and specifically relates to a simple vehicle such as a hand truck, a wheelchair, and a baby carriage.

[0002]

[Prior art]

 There are various types of vehicles that can be pushed and run by human power, and hand carts, wheelchairs, and baby carriages are used as simple vehicles for carrying luggage and people. In these vehicles, a plurality of wheels are mounted on the lower side of the vehicle body, and a person pushes the vehicle by gripping a handle or the like integrated with the vehicle body. For example, FIG. 6 shows a case of a hand cart, in which a plurality of wheels b are attached to a lower side of a cart body a which is a plate on which a load d is mounted, and attached to one side of the cart body a. A person grips the gripped handle c and travels while checking the front from behind.

[0003]

[Problems to be solved by the invention]

 The problem with such a wheelbarrow is that it requires a great deal of effort to get over road and floor irregularities. In the case of stairs, the only way is to lift by human power or go up and down by means of an elevating device provided on the stairs. However, in practice, small steps and unevenness on the roads and floors become large obstacles and make traveling difficult. If there is an operator other than the pusher, it is possible to lift the front part and get over it, but it is extremely difficult for a single worker. In the case of the hand cart shown in FIG. 7, when hitting the step e, the worker reverses by 180 degrees from the traveling direction, and firstly rides on the step e, and holds the handle c to move the wheel b on the handle side with the arm force. The other wheel “b” also moves over the step “e” by moving it up. This is because after some wheels e have climbed over, it is relatively easy to get over other wheels b. Next, the vehicle is turned again by 180 degrees and travels again in the traveling direction.

[0004] In the case of a push cart, the weight of the load placed on the mounting plate, which is the vehicle body, is from several tens to several hundreds of kilograms. Raising is extremely hard work. Moreover, the task of reversing the direction of travel by 180 degrees before and after getting over is extremely troublesome and complicated.

[0005] For this purpose, a climbing member is provided on the side of the vehicle body in the direction of travel so as to be rotatable at a base end for climbing over a step, and a handle provided on a grip portion side gripped by a pusher is pulled with arm strength to overcome the climbing member. Ingenuity has been developed. However, erecting the climbing member with the strength of the arm is a difficult operation similar to the work of lifting with the strength of the arm as described above, and it is hard to say that the labor is necessarily reduced.

[0006]

[Means for Solving the Problems]

 In the wheelbarrow of this invention, a foot pedal is attached to the handle side of the car body which the pusher grasps, a rotatable climbing member is attached to the opposite end, and both are connected by a tension member, and the foot is pedaled. By stepping down, the climbing member is erected so that it can easily climb over a step.

[0007]

[Embodiment of the invention]

 In this invention, a car means a simple car that can be pushed and run by human power, including a trolley, a stroller, a wheelchair, etc., and usually runs by power, and in some cases, can be selectively operated by human power and power. Also includes powered wheelchairs for traveling. In this invention, the body of the car means the main part of the vehicle that can run with a plurality of running wheels attached to the lower side, a carriage for loading luggage on a trolley, and a baby for a baby carriage. In the case of a wheelchair, it means a chair.

[0008] These vehicle bodies are provided with a handle portion which is used by an operator or a caregiver to stand on the rear side in the traveling direction of the vehicle body and push it. A possible foot pedal is installed. The foot pedal should be mounted at a height suitable for stepping down with the foot. On the side opposite to the handle part, that is, on the side of the vehicle body in the direction of travel, the base end is rotatably fixed to the base end, and a riding-over member to which a riding-over wheel is attached is mounted at the tip. The overriding member rises when the tip rotates downward, but the height to the lower end of the overriding wheel is about the same as the height of the running wheel protruding from the car body, or slightly below it. Is preferred.

[0009] The foot pedal and the climbing member are connected by a tension member. The tension member may be a wire or a chain, but if it is a highly rigid member such as a steel flat bar or a round steel bar, the rigidity of the flat bar or the like when the climbing member rises will be higher. Prevent rotation. In other words, it is unstable when supported by the overriding member if there is no contrivance to prevent the overriding member from rotating with wires, but if the rigidity such as a flat bar is rigid, the overriding member stands up without rattling and supports the car body be able to. The climbing member is normally biased upward so as not to interfere with running. The elastic force of rubber or a spring can be used to apply the force. The rubber or spring may pull the climbing member itself upward with rubber or the like, or may urge the foot pedal connected to the climbing member to pull up.

When traveling on a flat road surface or a floor surface, the pusher may push the vehicle body by grasping the handle portion on the rear side in the traveling direction. When the wheel hits a small step, the foot pedal is depressed, and the climbing member connected to the foot pedal is pulled down and raised. When the overriding member rises, the vehicle body rises, and if the vehicle is pushed forward, the vehicle can be driven by the overriding wheel and the traveling wheel can easily climb on the step. The handle side can easily climb onto the step if the operator grasps the handle and lifts it lightly. Therefore, there is no need to reverse the direction of travel.

[0011] In addition to the above-described riding member at the front part in the traveling direction, a riding member may be attached to an intermediate portion of the vehicle body, and may be connected to a separately installed foot pedal and a tension member. As described above, after climbing over the front portion of the vehicle body, if the climbing member provided at the intermediate portion is erected, the wheels on the rear side can easily climb on the step.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. The embodiment is an example in which the present invention is applied to a hand cart. In the figure, reference numeral 1 denotes a mounting plate which is a vehicle body, and a plurality of traveling wheels 2 are mounted on a lower surface of the mounting plate 1. The traveling wheels 2 include wheels having a swing mechanism called a so-called caster. On one side of the mounting plate 1, a U-shaped handle portion 3 is mounted upright. A foot pedal 4 is mounted near the height of the mounting plate 1 between the left and right sides of the handle portion 3 of the vehicle body 1. Since the mounting plate 1 of the embodiment is made of a synthetic resin, a U-shaped attachment 5 is attached to an end of the mounting plate 1, and an intermediate portion is fixed to the attachment 5 so that the foot pedal 4 can rotate. ing. On the side opposite to the mounting plate 1 of the foot pedal 4, wheels 15 are rotatably mounted.

A riding-over member 6 is attached to the mounting plate 1 at the left and right middle opposite to the handle 3 side. A steel plate 14 is attached to the upper and lower surfaces of the mounting plate 1 by bolts, and the base end of the climbing member 6 is rotatably attached to the lower side thereof with the base end thereof being fixed to the shaft. A riding wheel 7 is attached to the tip of the riding member 6. Both ends of a flat bar 8, which is a tension member, are rotatably attached to the front end of the foot pedal 4 and an intermediate portion between the climbing member 6 and are connected to each other. The foot pedal 4 is pulled up by the rubber 9 and is lifted upward. At this time, the climbing member 6 connected to the pedal 4 is pulled up.

When the front traveling wheel 2 hits a step while traveling on the push cart as described above, the foot pedal 4 is depressed by the foot. As the pedal 4 rotates, its tip also rotates, and the tension member fixed to the tip of the pedal 4 is pulled. At the same time, the climbing member 6 is pulled by the tension member, and the climbing member rotates downward and stands up. When the overcoming wheel 7 hits the floor surface on the step and further stands up, the traveling wheel 2 rises up, and if the vehicle advances forward, the traveling wheel 2 rides on the step. The rear side of the mounting plate 1 can easily climb over the step if an operator lifts the handle 3. Wheels 15 are mounted on the foot pedals 4, and when the pedals are depressed deeply, the wheels 15 contact the floor surface, so that the pedals 4 do not rub against the floor surface and are not damaged, and also help the truck to run smoothly.

FIGS. 4 and 5 show another embodiment, in which a jumping member 10 is further rotatably fixed to an intermediate portion of the mounting plate 1 and is provided separately. The foot pedal 12 is also connected by the flat bar 11. After the front running wheel 2 is climbed on the step as described above, the foot pedal 12 is depressed and the climbing member 10 is raised to raise the rear running wheel 2. If the vehicle travels as it is, the rear traveling wheel 2 can also easily ride on the step. In the embodiment shown in FIGS. 4 and 5, the riding-over member 10 is normally urged upward by a spring 13.

[0016]

[Effect of the invention]

 This invention has the above-described configuration, and can obtain the following effects. By simply depressing the foot pedal, the climbing member connected by the pulling member rises and the traveling wheel rises, and it is possible to easily climb over the step by moving forward. The front part, which is difficult for the pusher behind in the traveling direction to lift, can be easily lifted by the overcoming member, and no complicated work such as reversing the vehicle in the traveling direction is required. Since the foot pedal is depressed not by relatively weak arm strength but by leg strength, the climbing member can be raised very easily, and there is no need to separate the hand from the handle, and the balance is not lost. If a rigid member such as a steel flat bar or round steel bar is used as a tension member, further rotation is prevented when the climbing member is raised, and other members are not required. If the overriding member is also provided in the middle portion of the vehicle body, the rear running wheel can easily overstep the step, and the work becomes easier.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a hand truck embodying the present invention.

FIG. 2 is a side view showing a state where the bump has hit a step;

FIG. 3 is a side view of a state in which a climbing member is erected.

FIG. 4 is a plan view of an embodiment in which two riding members are mounted.

FIG. 5 is a side view showing a state in which a rear wheel is lifted up by an intermediate riding member.

FIG. 6 is a side view of a traveling state of a conventional cart.

FIG. 7 is a side view of an operation of climbing over a step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mounting plate 2 Running wheel 3 Handle part 4 Foot pedal 6 Riding member 7 Riding wheel 8 Flat bar 9 Rubber 10 Riding member 11 Flat bar 12 Foot pedal 15 Wheel

Claims (3)

[Utility model registration claims] 1. A wheelbarrow having a plurality of traveling wheels mounted on a lower side of a vehicle body so as to be able to travel and having a handle portion for pushing the vehicle body attached thereto. The foot pedal, which is rotatable and fixed to the end on the side of the handle, is attached.The end opposite to the end on the handle side is rotatable with the base end being rotatable. Is provided with a riding member having a riding wheel mounted thereon, the base end side of the pedal and the riding member are connected by a tension member, and the riding wheel of the riding member is urged to be located upward, A wheelbarrow that can be raised by pulling over the overriding member by the pulling member when the pedal is depressed. 2. A wheelbarrow having a plurality of traveling wheels mounted on a lower side of a main end of the vehicle so as to be able to travel and having a handle for pushing the vehicle body. At the handle side end, two foot pedals that are rotatable and rotatable are attached, and at the end opposite to the handle side end and at the middle, the base end is shafted. Each of the pedals is rotatable and has a climbing wheel attached to the tip thereof, and the base end of each pedal and the two climbing members are connected to each other by a tension member. Is pushed so as to be located upward, and when each of the pedals is depressed, the pulling member pulls up the overriding member so as to be able to stand up. 3. The wheelbarrow according to claim 1, wherein a rigid flat bar or the like is used as the tension member.