JP3204767U - The length of the length of the loading platform - Google Patents

Abstract

The present invention provides a platform leg capable of moving a platform loaded with a heavy object up and down with a light force. A gas spring piston rod 2 is connected to one end of a cylinder 1 of a gas spring and a support portion of a rotary shaft 3 of a “winding elevator using a lowering braking device for the winding elevator” (hereinafter referred to as “pull lift”). The other end of the gas spring extended with the tip of the “pull lift” suspension rod 4 is connected, and the belt 5 of the “pull lift” is wound to shorten the belt and compress the piston rod of the gas spring to compress the gas spring. On the contrary, the belt of the same device is loosened, the piston spring is extended by the gas spring gas pressure, the length of the gas spring is extended, and it can be stopped at any position by the friction force of "pull lift" It is characterized by that. [Selection] Figure 1

Description

The present invention is a piston in which a gas spring expands and contracts by combining a gas spring with a “winding elevator using a lowering braking device for a lifting elevator (Patent No. 3380872)” invented by the applicant of the present invention The present invention relates to a platform leg for extending and lowering a cargo platform loaded with a heavy object with a light force by expanding and contracting the length of the rod.

People with physical disabilities want to be able to move on their own or to receive family care. For this reason, lifts and wheelchairs for lifting heavy bodies have been developed. These devices use legs that support the wheelchair seats and bed and extend and contract their length. Among them, there is a method of adjusting the length of the leg of the base by adjusting the supporting force of the leg by air pressure or hydraulic pressure and expanding / contracting it, as in the examples of JP 2000-185076 and JP 2001-286513. There are also gas springs with locks that lift the chair base directly. In these methods, a method is adopted in which air and oil confined in the cylinder are adjusted to adjust the supporting force of the leg of the cargo bed and extend the length of the leg of the piston rod. In these methods, a method is also used in which braking is applied to the piston rod of the gas spring in order to stop the expansion and contraction of the leg length. However, each method has a complicated mechanism and its use is limited, and in the field of nursing care, a person such as a powerful nursing helper directly performs a nursing work manually. As a device, there is a need for an easy-to-operate care device that has a function that allows a person in a wheelchair to adjust the height of the wheelchair's stepping table and wheelchair seat by his / her own power. In addition, there is a demand for a care device that can be used with light power that can be used by elderly people and women who have no power.
A lift that lifts heavy objects can be lifted manually, hydraulically, or electrically. However, a heavy object can be lifted in this lift and the height can be adjusted freely. There is a “pull lift” invented by the applicant of this utility model registration to be stopped. However, there was no function to handle expansion and contraction in a direction different from the direction of gravity, and large and small forces other than gravity.
The present invention freely adjusts the length of the piston rod of the gas spring with a light force using the pulling force of the "pull lift" and the braking mechanism without using the mechanism to adjust the internal pressure of the gas spring. In addition, the present invention relates to a platform leg that can stop the expansion and contraction of the length of the piston rod at an arbitrary position.

  JP, 2000-185076, A nursing care moving device   Method for assembling care lift and care lift   Patent No. 3380872 Lowering braking device for hoisting elevator

  NEDO New Energy and Industrial Technology Development Organization 2002, Pamphlet, 29 pages (Example of the invention of the inventor of the present invention "pull lift")

When a physically handicapped person moves, power support is required. For this reason, care that supports the heavy body of a person receiving care with force is performed, but care by human power is still being made, and back pain of a helper who cares has occurred. In addition, there is a physical damage caused by a fall accident of a person receiving care, and safe care is required. In addition, because it requires power to care, women and elderly people such as elderly people cannot participate in care.
For this reason, people with disabilities are sad because they cannot live with their families. The phenomenon of the increase in the human population and the aging of the population is progressing, and the number of people receiving care is increasing. Therefore, there is a demand for a wheelchair equipped with a lift that can lift a seat on which a person receiving a caregiver can be lifted from a floor surface with a light force that allows the loading platform to move up and down with a light force that can be passed over a step with a wheelchair. The present invention is to solve this problem.

The present invention connects one end of the cylinder of the gas spring and the support portion of the rotating rod of the “pull lift”, and on the other hand, one end of the piston rod that expands and contracts the gas spring and the suspension rod that expands and contracts by the belt of the “pull lift”. One end is connected, and the rotating shaft of the “pull lift” is rotated to wind up the belt to shorten the length of the piston rod against the pressure of the gas spring. Also, when the belt is loosened by rotating the rotation axis of the “pull lift” in the opposite direction, the piston rod extends with the gas pressure of the gas spring. By this mechanism, the height of the loading platform can be raised and lowered freely by expanding and contracting the length of the loading platform with the heavy load placed thereon. Further, since the belt of the “pull lift” is stopped by a frictional force, the length of the belt does not expand and contract and the length of the leg does not expand and contract unless the rotating shaft is rotated by an external force. For this reason, a rotation lever for rotating the rotation shaft is attached to the leg of the present invention. A rotation lever is provided with a ratchet mechanism so that the rotation can be switched between winding up and loosening.
This mechanism has the effect that the piston rod can be expanded and contracted and braked even if the gas pressure in the cylinder of the gas spring fluctuates between compression and decompression. When a heavy object is placed on the loading platform, if a load that is heavier than the pushing force of the piston rod of the gas spring is put on, the gas spring will shrink due to its weight, and the "pull lift" belt will be loosened and no force will be applied, and no frictional force will be generated. For this reason, the pressure of the gas spring needs to be larger than the weight of the heavy object. In addition, a weight can be placed on the carrier to reduce the difference between the weight of the heavy object and the pressure of the gas spring.
Even if the difference between the weight of the gas spring and the weight of the heavy object is applied to the leg of the base, the piston rod does not extend because the rotating shaft is stopped by the frictional force of the “pull lift” as described above.
When compressing the gas spring, if a heavy object is placed on the cargo bed, it is necessary to apply a force exceeding the sum of the difference between the pressure of the gas spring and the weight of the load and the frictional force to the rotating lever.
In this case, if the ratio of the rotation lever to the rotation shaft and the radius is 5 to 1, the force applied to the rotation lever is 1/5, and the “pull lift” uses one moving pulley. The power is reduced to 1/10.
When extending the gas spring, if a force exceeding the frictional force that stops rotation is applied to the rotating lever, the piston rod will be extended by the force of the gas spring.

If the force that pushes up the gas spring is made slightly larger than the weight of the heavy object to be placed on the stand, the load carrier on which the heavy object is placed can be lifted by the force of the leg of the gas spring. Can lift the platform with a light force to overcome the frictional force. In addition, when the load platform loaded with a heavy load is pushed down by the pulling force of the “pull lift” against the pushing force of the gas spring, the force applied to the lever of the rotating shaft is the difference between the pushing force of the gas spring and the weight of the heavy load. Therefore, if the pressure of the gas spring is selected so as to reduce the difference between the weight of the heavy load and the pushing force of the gas spring, it is possible to push down the loading platform loaded with the heavy load with a light force. I can do it. The height of the loading platform can be stopped by stopping the length of the loading platform leg at an arbitrary position by the action of the “pull lift”. For this reason, even a person with a small force can move the loading platform loaded with a heavy load with a light force.
In the wheelchair shown in FIG. 7 according to the first embodiment and the chair that moves up and down the arm that supports the pedestal of the chair shown in FIG. 8 according to the second embodiment, the wheelchair is indicated by “26” or “38”. The person on board can raise and lower the height of the loading platform and wheelchair base by his own power.
In addition, it can be lifted up and down against gravity without lifting a heavy body by hand, and it is effective as a safety measure for care because it can prevent back pain of caregivers and fall of caregivers. . And by using together with the safety hole punched trousers which are not attached / detached in the toilet of the utility model registration No. 3201256 of the applicant's invention, a safety care system that anyone can do is made.

The figure which shows the state which extended the leg of the leg which can change the length of this device The figure which shows the state which the leg of the leg which can change the length of this device was shortened Front view of the slide stainless steel pipe cover leg with a single gas spring to reinforce the gas spring Side view of a sliding stainless steel pipe cover leg with a single gas spring for gas spring reinforcement Front view of the legs of a sliding stainless steel pipe cover that contains two gas springs as a set for leg reinforcement Side cross-sectional view of the leg of a sliding stainless steel pipe cover that includes two gas springs as a pair for leg reinforcement Figure of the loading platform for lifting the wheelchair etc. of Example 1 of this device and overcoming the step Figure of wheelchair that can change the height of the seat surface of Example 2 of this device The figure of the hanging chair attached to the wheelchair of Example 2 of this device

As a reinforcement when a lateral bending force is applied to the gas spring, a leg for inserting the gas spring made of the stainless steel pipe of FIGS. 3 and 5 is made. Stainless steel legs are made by combining pipes of different thicknesses so that the gas springs can slide and expand.
Next, put the gas spring into the stainless steel leg. Put the cylinder of the gas spring into the leg of the upper thick pipe, and put the piston rod of the gas spring into the leg of the lower thin pipe. The winding start end of the belt 5 of “pull lift” in FIG. 1 is fixed to the rotating shaft 3 in FIG. 1 attached to the upper leg. The other end of the belt of the “pull lift” is fixed to a shaft on which the belt of reference numeral 4 in FIG. 1 attached to the lower leg is hung.
A rotating lever 9 is attached to turn the rotating shaft of the “pull lift” 3 in FIG.
"Pull lift" When the belt of No. 5 is wound up with the rotary lever of No. 9, the leg shrinks,
When the belt of the reference numeral 5 is unwound by the rotation lever of the "pull lift" reference numeral 9, the legs extend.
The length of the sliding stainless steel pipe leg is determined according to the length of the gas spring when the piston rod of the gas spring contracts. The thickness of the pipe of the lower leg is set to the thickness that the cylinder of the gas spring can enter, so that it can enter when the rod is contracted.
A rotation axis 14 is attached to the leg 13 in FIG. A leg 19 is attached to a leg 19 by which the belt is hung.
The winding start end of the belt 51 shown in FIG. 5 is fixedly fixed to the belt stopper of the rotating shaft 50. The other end is fixed to the axis 19.
7 so as to lower the up and down loading platform of FIG. 7 of the first embodiment to the grounding surface, the sliding stainless steel cover has the thicker side up, and the lower end of the leg of the thicker pipe is labeled. Attach the support that supports the 33 cargo beds.

The leg of the loading platform on which the wheelchair is placed and over the steps of the entrance etc. As shown in Fig. 7, the leg of the loading platform that lifts the platform of the reference numeral 32 on which the wheelchair is mounted by attaching four gas spring legs on both the left and right sides.
The pressure of the gas spring when the length of the leg of the gas spring is extended to the longest is set to 40 kg, and the force for lifting the loading platform is set to 80 kg on one side and 160 kg in total on the left and right. Then, the “pull lift” belt is retracted to lower the height of the loading platform to the level of the ground. Then, a person weighing 80 kg is placed on a 20 kg weight wheelchair, and a wheelchair with a load of 100 kg is placed on the reference numeral 32. Then, the "pull lift" belt is loosened by the left and right rotating levers 26 to extend the legs, and the base 32 is pushed up to an arbitrary height by the force of the gas spring. In this case, the force to be pushed up is 60 kg which is the difference between the gas spring force of 160 kg and the weight of 100 kg. At this time, if a force exceeding the frictional force applied to the rotary lever 26 is applied to the rotary lever, the base 32 is raised by the force of the gas spring.
Next, lower the wheelchair from the height of the entrance floor to the level of the ground. The height of the reference numeral 32 is raised to the height of the entrance floor. A 100 kg wheelchair with people on the floor is placed on the table. And then. The belt of “pull lift” is wound with the rotation lever 26 and the leg of the gas spring is contracted. In this case, since the gas pressure is 160 kg and the weight is 100 kg, the force required for the lift to contract the legs of the gas spring is divided into 60 kg of difference between left and right, 30 kg each, and the total frictional force of the belt that stops rotating It is power in. As described above, the force applied to the rotary lever 26 is 1/10 of this force. As a result, the platform on which the wheelchair is placed can be lowered with a light force.

A wheelchair leg that can move the seat up and down As shown in Figure 8, two sets of two legs according to the present invention are combined on each side. The gas spring pressure is selected according to the weight of the person in the wheelchair.
The arm of the pipe of reference numeral 39 for hanging the chair of FIG. 9 is attached to the leg of reference numeral 34. Arms should be able to attach and detach various types of chairs, such as toilet chairs and heating chairs. If the seat surface of the chair to be worn is at the level of the floor, the person sleeping on the futon can be lifted from the floor surface. When a space is created in the lower part of the pedestal 49 when the hanging chair 48 is suspended, the pedestal 49 can be brought on the toilet seat.

There are various means to reduce the weight of heavy objects with power assist in the work that humans resist against gravity. The present invention also creates a power assist device by combining the pressure of the gas spring and the pulling force of the “pull lift”. With the world's population exceeding 7 billion and aging, nursing care devices will be frequently used every day in the world. “Pulllift” was applied for and adopted in the Snow Wheelchair Carry that the Olympic Committee invited to the world at the 2002 Salt Lake Winter Olympics. It has been used in the Olympics and has received a letter of appreciation from President Romney. A mechanism that combines the pushing force of the gas spring with this mechanism can also be used for legs that extend and contract in a direction different from the direction of gravity. In addition, even if the pressure of the gas spring increases, the pulling force of the “pull lift” and the force of braking by friction can be handled, so that it can be used not only in the field of nursing care but also in many fields. In addition, it can be used as a leg that can be controlled unattended by using a lift rotation lever as a motor and remotely controlling it.
This production is simple in structure and is a general-purpose product such as stainless steel pipes and gas springs where materials are widely used, so it can be made anywhere in the world, and development of various products such as daily necessities will be promoted become.

DESCRIPTION OF SYMBOLS 1 Gas spring cylinder 2 Gas spring piston rod 3 Rotating shaft for winding up a belt of a hoisting elevator equipped with a lowering braking device for a hoisting elevator (Japanese Patent No. 3380872) (hereinafter referred to as “pull lift”) 4 Gas spring piston rod Hanging rod 5 for “lift” above that supports “Pull lift” belt 6 Stopper 7 for winding up the belt 5 Stopper 8 on the other end of the belt 5 Rotating piece 9 for hanging the belt 5 Rotating lever 10 for rotating the rotating shaft 10 Stainless steel leg case 11 for inserting a gas spring cylinder Stainless steel leg case 12 for inserting a gas spring piston rod Reference 5 belt attached to the 11 leg case End stop 13 Stainless steel set of 2 gas springs Leg case 14 in which the cylinder of the Lespipes is inserted Rotating shaft mandrel 15 for winding the belt of “pull lift” in FIG. 5 Rotating shaft 16 for winding the belt of “pull lift” in FIG. 5 Reinforcing plate connecting the two leg cases of reference numeral 13 17 Rotating lever 18 for rotating the rotating shaft of reference numeral 15 Stainless steel leg case 19 for inserting the piston rod of the gas spring when two gas springs are set 20 Shaft 20 for hanging the belt of reference numeral 5 attached to the leg case of 18 Rotating piece 21 for hanging the belt attached to the shaft of the stopper. Stopper 22 for stopping the end of the belt of the reference numeral 5 attached to the shaft of the reference numeral 22. Stainless steel made of a gas spring cylinder with a wheelchair in FIG. Leg 23 Rotating shaft 24 that winds up the belt 5 shown in FIG. 7 Belt 25 shown in FIG. Stopper 26 at the end of winding of the belt of No. 5 Rotating lever 27 that rotates the rotating shaft of FIG. 7 Pipe 28 that connects the cylinders of the gas springs before and after the base of FIG. 7 A piston rod of the gas spring of the base of FIG. Stainless steel leg case 29 Pipe 30 connecting the legs 28 on both sides of FIG. 7 A rotating ring 31 attached to the legs of the base belt of FIG. 7 A belt end stopper 24 of the base legs of FIG. 32 A base 33 for raising and lowering the wheelchair of FIG. 7 A bracket 34 for supporting the base 32 of FIG. 7 A leg 35 of a stainless steel pipe with a gas spring cylinder of FIG. 8 A rotation shaft 36 of “pull lift” of FIG. "Pull lift" belt 37 Stopper 38 at the beginning of winding of the "pull lift" belt in FIG. 8 Rotating lever 39 for rotating the rotation shaft 35 in FIG. Arm 40 for hanging the chair attached to the wheel 41 Pusher 41 of the wheelchair of FIG. 8 Reinforcement plate 42 connecting the legs of the two gas spring cylinders of FIG. 8 Leg case 43 of the gas spring piston rod of FIG. A pipe 44 that connects the left and right leg cases of the left and right reference numerals 42 of the wheelchair A mandrel 45 that hangs the belt of reference numeral 36 on the leg of reference numeral 42 of FIG. 8 A rotating ring 46 that is attached to the mandrel of the mandrel of reference numeral 44 of FIG. Wheel belt stop 48 attached to leg case 42 in FIG. 8 Hanging chair 49 attached to arm 39 in FIG. 9 Hanging chair 49 in FIG. 9 Seat plate 50 with a hole for a toilet of the present invention A stopper 51 for attaching a belt 51 to 15 of FIG. 5 Belt of FIG.

Claims (1)

  The piston rod of the gas spring is connected by connecting one end of the cylinder of the gas spring and the support portion of the rotating rod of the “winding elevator using the lowering braking device for the hoisting elevator” Connect the other end of the stretched gas spring and the tip of the “pull lift” suspension rod, wind the “pull lift” belt, shorten the belt, and compress the piston rod of the gas spring to the length of the gas spring. On the contrary, the belt of the same device is loosened and the piston rod is extended by the gas spring gas pressure to extend the length of the gas spring, and it can be stopped at any position by the friction force of `` pull lift '' The base leg.

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