KR101709738B1

KR101709738B1 - Height adjustable crutch

Info

Publication number: KR101709738B1
Application number: KR1020160017341A
Authority: KR
Inventors: 이승용
Original assignee: 이승용
Priority date: 2016-02-15
Filing date: 2016-02-15
Publication date: 2017-02-23

Abstract

The present invention relates to height adjustable crutches. Each of the crutches comprises: a main frame which is vertically extended and has a traction part at an upper end; a body part which is vertically extended long, has an inner flow path where high pressure fluid is filled, and fixed and combined to a lower side of the main frame; a hydraulic cylinder which has an upper side part inserted into the inner flow path, is vertically moved up and down by the manipulation of a user, and is configured as a plunger provided with a rubber tip at a bottom end. With use of the height adjustable crutches of the present invention, it is possible to walk stably by changing the entire length of the crutches and to adjust the length of the crutches automatically, thereby being convenient to use.

Description

{Height adjustable crutch}

The present invention relates to crutches used by a person who is uncomfortable with a leg alone for walking, and more specifically, can easily adjust the height during use, thereby improving the convenience of the user when climbing or descending a staircase or a slope, The present invention relates to a crutch that can be adjusted in height to prevent a collision.

In general, crutches are a device for supporting people who are uncomfortable with the legs on an auxiliary floor instead of the legs. They support the body in the form of a long cane reaching from the armpit to the ground, so that the weight is not directly applied to the legs. It is being used to keep it at least or replace the uncomfortable legs.

The crutches are generally composed of an upper neck formed with a fastening portion for fitting on the upper side and a handle on an intermediate portion, and a lower neck formed with a rubber tip having a slip prevention purpose in its lower portion.

The crutches are mainly made of wood, but recently they have been made and supplied with light metals such as aluminum and synthetic resin. The crutches have been diversified in accordance with the needs of the user, There are some differences on the side, but they have almost the same form.

On the other hand, when climbing a staircase or a slope using a crutch, the height of a crutch is higher than the height of a crutch. Therefore, when the crutch is touched, the center of gravity of the user may fall backward. On the contrary, when the crutches are used to descend a staircase or a slope, the height of the crutches is lower than the height of the crutches, so that the center of gravity of the user may fall forward when crutches are struck.

Therefore, it is preferable that the length of the crutches is adjusted according to the degree of inclination of the road using the crutches. However, the conventional crutches have disadvantages in that such height adjustment is not possible and inconvenient to use. Of course, the conventional crutch has a height adjusting unit for adjusting the height in accordance with the user's key. However, since the height adjusting unit requires a process of unfastening and fastening the crutches, it is impossible to adjust the height There are disadvantages.

KR 20-0408541 Y1

The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a walker capable of providing a stable walk on a road or a stair with slope, The purpose is to provide.

In order to achieve the above object, according to the present invention,

A main frame extending vertically and having a fastening portion at its upper end;

A main body fixedly coupled to a lower side of the main frame and having an internal flow path extending upward and downward and filled with a high-pressure fluid; an upper portion of the main body being inserted into the internal flow passage and being vertically reciprocated by a user's operation; A hydraulic cylinder comprising a plunger provided therein;

.

Wherein the body includes an on-off valve for opening / closing the internal flow path stop,

The main frame includes a valve button for operating the on-off valve.

A piston mounted on the upper portion of the inner flow path in a liftable structure and compressing the high-pressure fluid in the inner flow path when the inner flow path descends, and a driving means for moving the piston up and down.

The drive means includes a drive motor that receives a current from the outside to generate a rotational force, and a motor gear that is rotated by the drive motor and is gear-engaged with the shaft of the piston to raise or lower the piston in the rotational direction ,

A battery for supplying current to the drive motor, and an operation button for controlling the operation of the drive motor.

The inner passage has an inner diameter smaller than an inner diameter of a portion to which the piston is coupled, at a portion where the plunger is engaged.

The crutches of the present invention can adjust the height of the crutches. The crutches can change the length of the crutches when they go up or down the stairs. The crutches can be stably walked. The length of the crutches can be adjusted automatically. .

1 is a side view of a crutch capable of height adjustment according to the present invention.
2 is a cross-sectional view of a hydraulic cylinder included in a crutch capable of height adjustment according to the present invention.
Figs. 3 and 4 are a crutch side view and a hydraulic cylinder sectional view in which the plunger is drawn out. Fig.
FIG. 5 is a side view of a second embodiment of a crutch according to the present invention. FIG.
6 is a cross-sectional view of a hydraulic cylinder included in a second embodiment of a crutch capable of height adjustment according to the present invention.
7 is a sectional view of the hydraulic cylinder in which the plunger is drawn out in the state shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of crutches capable of height adjustment according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a cross-sectional view of a hydraulic cylinder included in a crutch which can be adjusted in height according to the present invention. FIGS. 3 and 4 are side views of a crutch, Sectional view of the hydraulic cylinder.

The crutches of the present invention are adjustable in height. The crutches are a kind of medical assistant to allow a person who is uncomfortable with the legs to walk alone. When the inclination of the road to be walked is changed or the stairs are moved up and down, The main feature is that the overall length can be easily adjusted so that it does not fall off or fall over.

That is, the crutches capable of height-adjustable according to the present invention include: a main frame 100 extending vertically and having an upper-side holding portion 110; a body 210 coupled to the lower side of the main frame; The plunger 220 is constructed such that the entire length thereof is reduced or increased as the plunger 220 is drawn into or drawn out from the body 210.

The body 210 is formed in a vertically long cylindrical shape and is fixedly coupled to a lower side of the main frame 100. An inner flow path 211 filled with a high-pressure fluid is provided on the inner side. The high-pressure fluid filled in the inner flow path 211 may be air, gas, or fluid such as oil. That is, the high-pressure fluid can be applied to any kind of fluid as long as it can be compressed to a certain level by an external force applied from the outside to transmit pressure.

Since the packing 224 provided on the upper side of the plunger 220 is inserted in the inner flow path 211 in a fitting manner, the plunger 220 is pulled out or drawn out by the pressure of the high-pressure fluid filled in the inner flow path 211 .

At this time, the high-pressure fluid filled in the inner flow path 211 is compressed to have a pressure higher than the reference value, and the inner flow path 211 of the body 210 (more precisely, the plunger 220 in the inner flow path 211) And a valve button 120 for operating the on-off valve 212 is provided on a part of the main frame 100 where the user's hand is positioned. The on / off valve 212 may be connected to the valve button 120 via a separate link and may be applied as a mechanical valve operated when the user operates the valve button 120, And may be applied as an electronic valve operated by an electrical signal applied at a time. The open / close valve 212 is opened and closed according to the operation of the valve button 120. The valve button 120 is operated by the open / close valve 212, A detailed description of the structure will be omitted.

When the user opens the on-off valve 212 in the state shown in FIGS. 1 and 2, the high-pressure fluid pressure in the internal flow passage 211 is transmitted to the packing 224 side, as shown in FIGS. 3 and 4 The plunger 220 is slid in a direction to be drawn out of the body 210 (downward in the present embodiment), thereby increasing the overall length of the crutches. In the case of going downhill or going down the stairs, the height of the front ground is lower than the height of the ground standing on the user's side, so that the weight of the user is shifted toward the front when striking the crutches. The weight of the user does not shift forward, which is advantageous in that stable walking is possible.

On the contrary, when the user goes uphill or climbs up the stairs, the height of the front ground is higher than the height of the ground standing by the user. When the stomach is tilted, the weight of the user goes backward. It is necessary to reduce the total length of crutches by pulling in. When the plunger 220 is to be drawn into the body 210 as described above, the weight is loaded on the to-be-bonded portion 110 in a state where the on-off valve 212 is opened by operating the valve button 120. The total pressure of the high-pressure fluid filled in the internal flow path 211 is set to be smaller than the body weight of the user. When the user puts weight on the to-be-bonded part 110, the plunger 220 is drawn into the body 210 , So that the high-pressure fluid is compressed to a higher pressure. When the valve 120 is operated to close the on-off valve 212 in a state where the plunger 220 is drawn into the body 210, the plunger 220 is retracted into the body 210 As a result, the overall length of crutches is reduced.

The hydraulic cylinder 200 in which the plunger 220 is drawn into and drawn out from the body 210 by the above-mentioned method is substantially the same as the cylinder used in the conventional height adjusting chair, and a detailed description thereof will be omitted.

6 is a cross-sectional view of a hydraulic cylinder 200 included in a second embodiment of a crutch capable of adjusting the height according to the present invention, and FIG. 7 is a cross- Sectional view of the hydraulic cylinder 200 in which the plunger 220 is drawn out in the state shown in Fig.

The height-adjustable crutches according to the present invention can be configured such that the plunger 220 is pulled out by a mechanical force to increase the reliability of changing the length of the crutches.

That is, the crutches capable of height adjustment according to the present invention include a piston 130 mounted on an upper portion of the internal passage 211 in a liftable structure and compressing a high-pressure fluid in the internal passage 211 when the crane is lifted, And a driving unit 140 for moving the lifting unit 130 up and down.

6, the piston 130 is mounted on the opposite side (the upper side in the present embodiment) of the inner flow path 211 where the plunger 220 is inserted. The piston 130 is connected to the inner flow path 211, The high pressure fluid filled in the internal flow passage 211 presses the packing 224 and the plunger 220 is drawn out of the body 210.

When the piston 130 and the driving means 140 are further provided, the plunger 220 is not simply drawn out by the high-pressure fluid pressure in the internal flow passage 211 but is drawn out by the pressing force of the piston 130 The pulling reliability of the bar and the plunger 220 is remarkably increased. For example, even if the crank lifetime according to the present invention is long and the pressure of the high-pressure fluid filled in the inner passage 211 is somewhat lowered, the pressure applied to the packing 224 may be increased by increasing the transfer distance of the piston 130, 220 can be drawn out sufficiently long, so that there is an advantage that the operation reliability is improved.

The drive unit 140 for transferring the piston 130 includes a drive motor 142 that receives a current from the outside to generate a rotational force and a drive motor 142 that is rotated by the drive motor 142, And a motor gear 144 which is gear-engaged with the shaft 132 to move the piston 130 upward or downward in the rotating direction. The main frame 100 is provided with a battery 150 for supplying current to the driving motor 142 and an operation button 160 for controlling the operation of the driving motor 142, When the button 160 is operated, the motor gear 144 is rotated by the drive motor 142 and the shaft 132 of the piston 130 gear-coupled with the motor gear 144 is lowered, The plunger 220 is drawn out of the body 210 as shown in FIG.

In this case, since the operation button 160 is configured to selectively rotate the motor gear 144 in the clockwise direction and the counterclockwise direction, 142 can be operated. When the piston 130 rises, the high-pressure fluid in the internal flow path 211 is depressurized, so that the plunger 220 is drawn into the body 210 by the weight of the main frame 100, .

When the plunger 220 is pulled out and pulled in, the entire length of the crutch is increased or decreased. Therefore, the effect that the ramp can be stably walked even when the ramp of the road suddenly increases or decreases, . &Lt; / RTI >

A reducer may be provided between the motor gear 144 and the shaft 132 so that the rotational force output from the drive motor 142 is reduced to a certain extent and then transmitted to the shaft 132 of the piston 130. The same reducer is commercialized in various fields in all fields using the motor as well as the technical field of the present invention, and a detailed description thereof will be omitted.

The inner flow path 211 filled with the high-pressure fluid can be designed so that the transfer distance of the plunger 220 due to the feeding of the piston 130 can be secured to a very large extent. That is, the inner passage 211 is formed so that the inner diameter of the portion (the lower portion in this embodiment) where the plunger 220 is engaged is smaller than the inner diameter of the portion where the piston 130 is coupled (upper portion in this embodiment) . When the internal passage 211 is formed to have a single layer, the plunger 220 is drawn to a very long distance even if the piston 130 is slightly lowered. Thus, the outflow responsiveness of the plunger 220 is improved.

The piston 130 and the plunger 220 may be integrally coupled to each other so that the plunger 220 is directly lifted or lowered by the force of the driving motor 142. In this case, The impact force applied to the rubber tip 222 may be transmitted to the driving motor 142 and damage to the driving motor 142 may occur.

Therefore, the plunger 220 is preferably configured to transmit power to the piston 130 through the high-pressure fluid filling the internal passage 211. When the high-pressure fluid acts as a power transmission medium, the effect that the impact force applied to the rubber tip 222 is absorbed by a certain level of high-pressure fluid, that is, the hydraulic cylinder 200 can serve as a shock absorber of a vehicle , And the user can enjoy more comfortable walking.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

100: main frame 110:
120: valve button 130: piston
132: shaft 140: drive means
142: drive motor 144: motor gear
150: Battery 160: Operation button
200: Hydraulic cylinder 210: Body
211: inner flow path 212: opening / closing valve
220: plunger 222: rubber tip
224: Packing

Claims

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A main frame (100) extending vertically and having a top portion (110);
A main body 210 having an internal flow passage 211 extending upward and downward and filled with a high-pressure fluid and being fixedly coupled to a lower side of the main frame 100, and an upper part of the body 210 inserted into the internal flow passage 211, A hydraulic cylinder 200 constituted by a plunger 220 which is reciprocated vertically by an operation and has a rubber tip 222 at a lower end thereof; And
A piston 130 mounted on the upper portion of the inner passage 211 to compress the high-pressure fluid in the inner passage 211 when the piston is lowered, and a driving means 140 for moving the piston 130 up and down; / RTI >
The driving unit 140 includes a driving motor 142 that receives a current from the outside to generate a rotational force and a driving unit 140 that is rotated by the driving motor 142, And a motor gear (144) for raising or lowering the piston (130)
A battery 150 for supplying a current to the driving motor 142 and an operation button 160 for controlling the operation of the driving motor 142.

The method of claim 4,
Wherein the internal passage (211) has a smaller inner diameter of a portion where the plunger (220) is coupled than an inner diameter of a portion where the piston (130) is coupled.