JP2022191542A - Load reduction device - Google Patents

Abstract

To provide a load reduction device which can walk on a flat ground and a floor and ascend and descent a stairway and a slope without applying a load of a person and a cargo to a transport person.SOLUTION: A backpack and a plate for placing feet of a transport person are connected to each other using a reciprocation pump composed of a piston and a cylinder, and a load of a person and a cargo is supported by a pressure of a piston and a fluid in the cylinder. A compression bag is mounted on the lower part of the plate for placing the feet, and the cylinder and the compression bag are connected to each other with a fluid inflow/outflow tube so that the fluid in the cylinder can freely flow into and out of the compression bag. Thereby, when the feed land, the compression bag is compressed by a body weight of the transport person, the fluid in the compression bag is moved to the side of the cylinder, the piston can be lifted and the person and the cargo can be lifted.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for preventing the load from being applied to a carrier when carrying a person or luggage on his or her back.

Backpacks and auxiliary devices are used to carry people and luggage on their backs.

Patent Document 1 (Japanese Patent Laid-Open No. 2017-144101) provides a backpack that can be easily carried on the back with a person on it and that can take a resting posture during transportation. As a solution to this problem, the legs of the backpack extend downward from the left and right sides of the lower part of the torso, and are inclined forward with respect to the vertically extending torso, so that when the person who carries the backpack stands upright, it touches the ground and the back is carried. When a person leans forward, it leaves the ground. Also, the seat is provided on the rear side of the trunk, and it is possible to sit on at least from the rear side surface to the upper side surface.

Patent Document 2 (Japanese Patent Laid-Open No. 2013-173190) has a problem of reducing the burden on the waist of the wearer. It has a drive mechanism.

Patent Literature 3 (Japanese Patent Laid-Open No. 2017-113193) provides a walking support machine capable of adjusting the generation range of the biasing force and changing the direction of the biasing force. As a solution, the walking support machine of the present invention includes a first link portion arranged on the side of the user's thigh, a support portion fixed directly or indirectly to the body, and a first rotation support portion having a torque generating device that rotatably supports the first link portion by means of a first link portion and that can switch the first link portion between forward biasing and rearward biasing; and a thigh attachment member that is attached directly or indirectly to the link portion and attached to the user's thigh or lower leg.

Patent Document 4 (Japanese Unexamined Patent Application Publication No. 2000-016539) provides a work aid that allows a worker to walk freely without bearing the load of a load on the worker. As a means for solving this problem, there is a work aid 1 for supporting a load carried on the back of a person, which includes a load placement section 2 for holding the load, and a load placement section 2 extending from the load placement section 2 to be worn on the shoulder. A shoulder mounting part 3, a waist mounting part 4 provided at the lower part of the load placing part 2 and fixed by wrapping around the waist, and extending from the waist mounting part 4 to the ground and bending in conjunction with the movement of the legs. and support legs 6 .

JP 2017-144101 JP 2013-173190 JP 2017-113193 JP 2000-016539

The three conventional technologies (JP 2017-144101, JP 2013-173190, JP 2017-113193) assume that the load of the luggage is applied to the carrier, and try to reduce the load as much as possible. be. In addition, the prior art (Japanese Patent Application Laid-Open No. 2000-016539) is a work aid that can walk without the load of luggage being applied to the carrier. and cannot support the weight of the cargo when the knees are bent. For this reason, it is possible to walk on flat ground while alternately supporting the load of the load with the left and right feet, but it is not possible to go up and down stairs and slopes. It is an object of the present invention to prevent the load of a person or luggage from being applied to a carrier not only when walking on a flat ground but also when going up or down stairs or a slope so that the carrier can be easily carried.

When carrying people or goods on their backs, they walk with their left and right feet alternately on the ground or floor. That is, one foot is always on the ground or floor.

A backpack equipped with shoulder belts to be hung on the shoulders of the carrier for carrying people and luggage is used, and this backpack and plates for carrying the left and right legs of the carrier are combined with pistons and cylinders filled with fluids such as air and water. A reciprocating pump consisting of a piston and cylinder can support the load of a person or cargo when the carrier's foot lands on the ground. Since one of the carrier's feet is always on the ground or floor, the load of the person or load is not placed on the carrier.

However, in this state, the carrier's legs cannot be raised and lowered. In other words, it cannot go up or down stairs or slopes. Therefore, a compression bag is attached to the bottom of the plate on which the carrier's feet are placed, and the cylinder and the compression bag are connected by a fluid inlet/outlet pipe so that the fluid in the cylinder can freely flow in and out of the compression bag.

If the load of the person or load is less than the weight of the carrier, when the foot lands the body weight of the carrier can compress the compression bag and move the fluid from the compression bag to the cylinder through the fluid port. can. Therefore, the piston can be pushed up by the weight of the carrier, and the person or load can be lifted. This is the same situation as when a person or load is put on one side of a playground equipment seesaw and a person who is heavier than the person or load is placed on the other side. In addition, since the height of the backpack changes depending on the load of the person or load pushing the piston down and the pressure of the fluid in the cylinder pushing up the piston, fill the cylinder in advance so that the height is just right for the carrier. Adjust the amount of fluid.

When the landing foot is lifted off the ground or floor, the weight is removed from the compression bag, causing the fluid in the cylinder to move toward the compression bag and inflate it. At this time, the other foot is on the ground, so the carrier's weight is used to lift the person or load. Therefore, the legs can be raised and lowered alternately on the spot.

If the mounting part of the backpack and the piston can be rotated back and forth like a ball joint, and the mounting part of the cylinder and the plate on which the foot is placed can be rotated back and forth, the foot placed on the plate can be moved freely in the front, back, left and right. can move. This allows the carrier to walk on flat ground or floors, or climb up or down slopes or stairs without the load of the person or load being constantly on the carrier.

The shoe fixing device, which fixes the shoes to the plate on which the carrier's feet are placed, should be designed so that it can be fixed with one touch by stepping on the heel of the shoe without using hands, like bindings (binders) attached to ski plates. This makes it easy to fix the feet to the plate after carrying the backpack.

When descending a slope or stairs, it is common to sit down and bend your knees slightly to reduce the impact on your ankles and knees when you land. In order to facilitate this even when the device is worn and a person or luggage is carried on the back, a slider to which a shoulder belt is attached is attached so as to move up and down along the frame of the backpack. This allows the knees to be bent and stretched while the shoulder belt is hung on the shoulder.

If the load of the person or cargo is heavier than the weight of the carrier, the weight of the carrier cannot compress the compression bag. Also, since the fluid in the cylinder is compressed by the load of the person or load, the leg cannot be raised. Therefore, it is difficult to climb stairs with large steps or steep slopes.

However, the back has a slider, so you can bend and stretch your knees. In addition, since the mounting portion of the backpack and the piston and the mounting portion of the cylinder and the plate on which the foot is placed are rotatable, the left and right legs can be moved back and forth and left and right. Therefore, it is possible not only to walk on a flat ground or a floor while shifting the center of gravity alternately to the left and right feet, but also to climb stairs with a small step or a slope with a gentle slope. However, when going up stairs or slopes, the weight of the person or luggage must be lifted by leg strength to the extent that the load is heavier than the weight of the carrier. For example, if the load of a person or load is 70 kg and the weight of the carrier is 60 kg, the person must lift 10 kg or more with leg strength.

When the load of the person or cargo is heavier than the weight of the carrier, the carrier is rather lifted by the load of the person or cargo. Therefore, when walking on a flat ground or floor carrying a person or load heavier than the weight of the carrier, or walking down a stairway with a small step or a gentle slope, the load of the person or load is not applied to the carrier at all.

When carrying a person or load, the person or load must be lifted first. In this case, if the backpack is replaced with a carrier, and the person or cargo is placed on the carrier and then lifted by the carrier's weight, the carrier can be lifted without much burden on the waist of the carrier. In addition, it can be held and carried as it is.

If the load of the person or load is lighter than the weight of the carrier, the person or load can be lifted by the weight of the carrier. Therefore, the carrier can walk on a flat ground or a floor, or go up or down a slope or stairs without the load of a person or luggage being applied to the carrier.

If the load of a person or luggage is heavier than the weight of the carrier, it is difficult to climb stairs with large steps or steep slopes, but it is possible to climb stairs with small steps or gentle slopes. can. In this case, a load is applied to the carrier as much as the weight of the person or load is greater than the weight of the carrier. In other words, only the load minus the body weight is placed on the carrier. For example, when a person weighing 60 kg carries a load of 70 kg, the load is only 10 kg.

If the load of the person or cargo is heavier than the weight of the carrier, the carrier may be lifted by the weight of the person or cargo when walking on flat ground or on the floor, or when descending stairs with small steps or gentle slopes. Since it is in a state where it is in a state where the load of people and cargo is not applied to the carrier at all.

When carrying a heavy person or load, a burden is applied to the lower back when lifting the person or load, and the lower back is likely to be injured. By using this device, a person or load can be easily lifted without putting a burden on the lower back. In addition, it can be held and carried as it is.

Since this device uses the weight of the carrier and the air pressure and water pressure to support the load of the person and cargo, it does not require energy such as batteries. Therefore, there is no usage cost.

The device has a simple structure and is inexpensive to manufacture. Moreover, mass production is possible.

It is a side view and a rear view in the case of carrying a person or luggage on the back. 4 is an enlarged cross-sectional view showing a structure in which a cylinder and a compression bag are connected by a fluid inlet/outlet pipe; FIG. It is a side view showing the state which raised one leg. It is a side view showing a state in which the waist is lowered and the knees are slightly bent. It is a side view showing movement when walking on a flat ground or a floor. It is a side view showing movement when going up stairs. It is a side view showing movement when going down stairs. It is a front view and a side view when a person who is heavier than the carrier is carried on the back. It is a front view and a side view when carrying people and luggage. It is a side view showing the movement when holding and lifting a person lying on the bed. It is a side view showing the movement when a person lying on the bed is held and lifted.

A configuration in which a person or luggage is carried on the back will be described as Example 1, and a configuration in which a person or luggage is carried on the back will be described as Example 2 with reference to the drawings.

1 to 8 show an embodiment for carrying a person or luggage on the back.

FIG. 1 shows the upper end of the piston 4 attached to the lower part of the backpack 1, and the plate 8 on which the bearer's feet are placed on the lower end of the cylinder 5. As shown in FIG.

A fluid injection port 6 is provided below the cylinder 5, through which fluid such as air and water is injected. As a result, the load of a person or luggage placed on the backpack 1 can be supported by the pressure of the fluid in the piston 4 and the cylinder 5.例文帳に追加

If the upper end of the piston 4 is attached to the lower part of the backpack 1 like a ball joint and the lower end of the cylinder 5 is rotatably attached to the plate 8 on which the foot is placed, the foot can be moved forward, backward, left and right.

A compression bag 9 is attached to the lower part of the plate 8 on which the foot is placed. The cylinder 5 and the compression bag 9 are connected via a fluid inlet/outlet pipe 7 to allow the fluid in the cylinder 5 and the fluid in the compression bag 9 to enter and exit each other.

FIG. 2 is an enlarged sectional view showing a structure in which the cylinder 5 and the compression bag 9 are connected by the fluid inlet/outlet pipe 7. As shown in FIG.

FIG. 3 is a diagram showing a state in which one leg is lifted when the load to be carried is lighter than the weight of the carrier. When the foot on the ground is lifted, the weight is removed from the compression bag 9, and the fluid in the cylinder 5 moves toward the compression bag 9 through the fluid inlet/outlet pipe to inflate the compression bag. Therefore, the leg can be raised. Since the other foot is on the ground, the load is lifted by the carrier's weight. This allows you to alternately raise and lower your left and right legs while constantly lifting a load.

FIG. 4 is a diagram showing a state in which a person with a load on his back sits down and bends his knees slightly. A slider 2 is attached to the frame of the backpack 1 so as to move up and down along the frame, and a shoulder belt 3 is attached to the slider 2. - 特許庁As a result, it is possible to move the hips up and down by bending and straightening the knees while the shoulder belt 3 is hung on the shoulders.

FIG. 5 is a diagram showing movement when walking on a flat ground while carrying a load lighter than the carrier's weight. First, when one leg is lifted, the fluid in the cylinder 5 moves through the fluid inlet/outlet pipe 7 to the compression bag 9 to inflate the compression bag. Next, shift your center of gravity forward and lower your lifted leg to land and apply your weight. Then, the compression bag 9 is compressed by body weight, and the fluid inside moves toward the cylinder 5 through the fluid inlet/outlet pipe 7, pushing up the piston 4 and lifting the load. If this movement is alternately performed with the left and right legs, it is possible to walk on flat ground while lifting the load carried on the back by the weight of the carrier. In other words, the carrier can walk on flat ground without the load of the load being applied to the carrier.

FIG. 6 is a diagram showing movement when climbing stairs. First, lift one leg and place it on the stairs in front of you. Next, lean forward with your back foot as a fulcrum to shift your center of gravity up the stairs in front of you. Then, the weight of the carrier and the load of the load are applied to the piston 4 on the front foot side, that is, the foot side placed on the front stairs, and the piston 4 is pushed down to compress the fluid in the cylinder 5, so that the fluid travels through the fluid inlet/outlet tube 7 to the compression bag 9 to inflate the compression bag. Therefore, at this time, it is necessary not to put weight on the foot placed on the front stairs, but rather to float it. In this way, the center of gravity is moved up the stairs in front. When the weight is then put on the foot on the front steps, the compression bag 9 under the foot is compressed and the fluid moves into the cylinder 5 and pushes the piston 4 up. At the same time, if you straighten your knees and stand up, you can go up one step.

FIG. 7 is a diagram showing movement when descending stairs. First, drop your hips, bend your knees slightly, and lift one leg out in front of you. Then move the center of gravity to the top of the stairs below. After that, put your forward leg down and land on the stairs below.

FIG. 8 is a front view and a side view showing a state in which a person who is heavier than the weight of the carrier is carried on the back and walks on a flat ground or a floor. Since the weight of the bearer is greater than the weight of the carrier, the piston 4 is pushed down and the compression bag 9 is inflated, increasing the pressure of the fluid in the cylinder 5 and the compression bag 9. Therefore, the compression bag 9 cannot be further compressed by the carrier's weight. I can't lift my legs because of this. Therefore, it is difficult to climb stairs with large steps or steep slopes.

However, since the slider 2 is attached so as to move up and down along the frame of the backpack 1, it is possible to lower the waist and bend the knees a little. Also, since the upper end of the piston 4 and the lower end of the cylinder 5 are rotatably attached, the foot can be moved forward, backward, left and right. Therefore, it is possible to move the center of gravity to the left and right feet while walking on flat ground or the floor, or to climb stairs with small steps or gentle slopes. When going up, the weight of the bearer minus the weight of the carrier is applied to the carrier, but when going down, no load is applied.

9 to 11 show an embodiment for carrying a person or luggage.

9A and 9B are a front view and a side view when carrying a person or luggage. The position where the lower end of the cylinder 5 is attached to the plate 8 on which the feet are placed is set to be inside the both feet of the carrier. It is also positioned close to the ball of the carrier's foot. This is because when a person or cargo is carried, the person or cargo should be integrated with the carrier, and the center of gravity of the person or cargo should be unified to facilitate transportation. By the way, when carrying people or loads on their backs, the center of gravity can be unified if the carrier leans forward a little.

10A and 10B are diagrams showing movements when a person lying on a bed is picked up and lifted. First, the carrier moves one leg forward. Next, lean forward on your back leg and lower yourself as much as possible. Then, the weight of the carrier is applied to the piston 4 on the front foot side, that is, on the foot side that has moved forward greatly, pushing down the piston 4 and compressing the fluid in the cylinder 5, so that the compression bag 9 is inflated. Therefore, at this time, do not put weight on the front leg, but rather let it float. After that, the person who is lying down is picked up and put on the back carrier (carrying device) 1.

FIG. 11 is a view of a person who is put on the backpack (carrying device) 1 when lifted. Lifting is done by bending the knees while putting the weight on the front leg, leaning back and rotating the person in the direction of the carrier. Since the upper end of the piston 4 is rotatably attached to the backpack (carrying device) 1, the person placed on the backpack (carrying device) 1 can be rotated. In this manner, the weight of the carrier can be used to push up the piston 4 on the side of the forefoot, and the person can be lifted by applying the weight so as to lean on the back. In this way, a person lying on the bed can be easily lifted without straining the lower back.

When carrying a load lighter than your weight up and down a mountain, or carrying a person or load heavier than your weight down a mountain or walking on a flat surface, the load of a person or load is applied to the carrier. does not take at all.

When carrying or carrying a child walking on flat ground or floors, or going up or down stairs or slopes, the weight of the child is never placed on the adult carrier.

When carrying agricultural products on a flat land (agricultural land) in a farm, the load of the agricultural products is not applied to the carrier at all, not only when the weight of the agricultural products is lighter than the weight of the carrier, but also when it is heavy.

When a patient is held and carried on a flat floor in a hospital, the weight of the patient is not placed on the carrier at all even if the weight of the patient is lighter than that of the carrier, and even if the carrier is heavier.

1 Backpack (carrying device)
2 Slider 3 Shoulder belt 4 Piston 5 Cylinder 6 Fluid inlet 7 Fluid inlet/outlet pipe 8 Footrest plate 9 Compression bag

Claims (2)

a backpack with a shoulder belt,
a reciprocating pump comprising the piston and the cylinder, with the upper end of the piston attached to the lower part of the backpack;
a fluid inlet provided below the cylinder;
a footrest plate attached to the lower end of the cylinder;
a compression bag attached to the bottom of the footrest plate;
a fluid access tube movably connected between said cylinder and said compression bag. 2. The load reducing device according to claim 1, further comprising a slider attached to the frame of said backpack so as to move up and down, and said shoulder belt attached to said slider.

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