KR20190008777A - Foot-rest assembly for wheelchair - Google Patents

Abstract

The present invention provides a folding-type footrest assembly having excellent durability to prevent a user′s foot from slipping during driving of a wheelchair, and to prevent the footrest assembly from being deformed by a load pressed by the foot. To this end, the folding-type footrest assembly comprises: a knuckle integrally formed with a first mounting pipe to be mounted on one of both sides of a wheelchair; a dock arranged in parallel with the knuckle at a predetermined interval and integrally formed with a second mounting pipe to be mounted on the other side of both sides of the wheelchair; a first support having one side end connected to the knuckle by a pin joint, and formed to allow a user of the wheelchair to put his/her foot; a second support arranged symmetrically with the first support, allowing the first support and the opposite end to be inserted into the dock to be hung and locked, and formed to allow a user of the wheelchair to put his/her foot thereon; and a coupler connected to the other side end of the first and second supports by a pin joint so that the first and second supports can be symmetrically folded or unfolded.

Description

[0001] FOOT-REST ASSEMBLY FOR WHEELCHAIR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footrest assembly for a wheelchair, and more particularly, to a foldable footrest assembly having an excellent durability for preventing a foot from being deformed by a pressing load, will be.

Today, wheelchairs are widely used as a guarantee to expand the range of convenience and action when moving people who can not move their legs freely, such as patients with mobility, elderly people, or persons with difficulties in walking due to dysfunctions in the body.

The type of wheelchair is generally classified into a manual type in which the user rotates the wheel by hand or a protector or a caregiver grips the handle and moves by pushing the wheel in accordance with the driving method of the wheel, . In particular, in the case of a hand wheelchair, the wheelchair is folded or unfolded to minimize the volume when mounted on a vehicle.

Conventional manual wheelchairs include a frame having a seat and a backrest, a handle and an armrest, wheels mounted on both sides of the frame, a hand rim provided on the outside of the wheel, A footrest mounted on the lower front side of the frame, and a brake mounted on both sides of the frame for reducing or stopping the rotation speed of the wheels.

Particularly, the footrest is a part for putting the user's foot in order to maintain a comfortable posture, and is connected to both ends of the wheelchair frame, as shown in FIG. 7, And can be folded into a foldable type foldable folded on both sides of the wheelchair frame as shown in FIG.

However, in the case of the both-end connection type footrest, it is possible to prevent the user's foot from falling off during the running of the wheelchair, which is excellent in safety. However, for example, There is a considerable difficulty and inconvenience in use because it can not approach.

In addition, in the case of folding footrest, it is possible to fold and fold on one side so that the user does not cause contact interference as needed, but it is easy to sit on the seat. However, since the structure is spaced in the middle part, There is a risk that you can get hurt seriously.

In addition, the foldable footrest has a structure in which the foldable footrest is simply folded about the rotation axis, and the supporting force is relatively weak. Thus, when the load pressing by the user is large due to the rigidity,

Herein, the background art or the prior art described above is only intended to help understand the technical significance of the present invention as information acquired by the present inventor or derived from the present invention, It does not mean that it is widely known in the field.

KR10-0849268 B1 (2008.07.23) KR10-0856998 B1 (2008.08.29) KR10-1244935 B1 (March 3, 2013) KR20-0406017 Y1 (2006.01.05)

Accordingly, the present inventor has focused on solving the limitations and problems of the existing footrest for a wheelchair in consideration of the above-mentioned matters in a comprehensive manner, so that it is excellent in safety to prevent the foot of the user from falling off during the running of the wheelchair, It has excellent durability to prevent deformation due to the load and also allows the user to put his foot on the floor for eating in a comfortable posture and minimizes disturbance and interference when using the toilet, The present invention was conceived as a result of intensive research on efforts to develop a new structure of a wheelchair footrest assembly for a wheelchair.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a footplate assembly for a wheelchair, which prevents a user's foot from falling out and prevents deformation due to a load pressing the foot.

Herein, the technical object and object to be solved by the present invention are not limited to the technical object and purpose mentioned above, and another technical object and purpose not mentioned can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a wheelchair comprising: a knuckle having a first mounting pipe for mounting on one of two sides of a wheelchair; And a second mounting pipe for mounting the other of the two frames on either side of the wheelchair, the one end being connected to the knuckle by a pin connection, The first support being symmetrically arranged with respect to the first support and the opposite end of the first support being able to be inserted and filled in the dock so that the user of the wheelchair can lift the foot A second support formed so as to be symmetrically disposed on the first support and the second support, And a coupler connected to the other end of the first and second supports by a pin connection, respectively.

Thus, the present invention can prevent the user from falling out of the wheelchair while traveling on the wheelchair, and can prevent the deformation due to the load pressing the foot, thereby greatly improving the safety and durability.

According to another preferred embodiment of the present invention, there is provided an index head comprising: an index head mounted on the knuckle and formed with a plurality of stop holes spaced apart from each other by a predetermined distance along the angle of the movable range at the rotation center of the first support; And a first ball plunger elastically hooked on the stop hole by the elastic force of the spring to prevent the rotation of the first support relative to the knuckle from being stopped at a predetermined angle in a stepwise manner, So that the first and second supports can be stretched in a row across the both sides of the wheel chair or can be folded on either side of the wheel chair.

In another preferred embodiment of the present invention, the second ball plunger is mounted on the dock and is elastically contacted by the elastic force of the second support and the spring to cause contact interference, thereby maintaining the second support in the dock. So that the first and second supports can be more stably maintained in a state in which the first and second supports are stretched in a line in both directions of the wheel chair.

According to another preferred embodiment of the present invention, the first and second supports are rotated so as to be parallel to each other, and magnets having different polarities are attached to the opposing surfaces in the folded state, whereby the folded states of the first and second supports are stably .

According to another preferred embodiment of the present invention, a stopper, which causes contact interference when the first and second supports rotate at a predetermined angle or more, is mounted on both sides of the coupler, so that the first and second supports are horizontally expanded The state can be maintained more stably.

According to another preferred embodiment of the present invention, since the height adjusting holes are formed at predetermined intervals in the longitudinal direction of each of the first and second mounting pipes, the installation height of the wheelchair can be easily adjusted and installed .

According to an aspect of the present invention, there is provided an apparatus and method for solving the above-mentioned problems, which comprises a first and a second support on which a user of a wheelchair puts a foot, It is possible to prevent the user's foot from being dropped while the wheelchair is running, and also to prevent the deformation due to the load pressing the foot.

In addition, since the first and second supports can be folded to either side of the wheelchair according to the user's need or selection, the volume can be minimized when the wheelchair is not used, such as when mounted on a vehicle, You can put your feet down on the floor and take a comfortable position. You can also go to the toilet to go to the toilet or sit down and move from the wheelchair to the toilet.

Therefore, it is possible to greatly improve safety and durability to prevent foot drop, and to minimize the volume by folding according to need, thereby maximizing the portability and convenience of use, and being easy to store, .

Here, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a wheelchair according to an embodiment of the present invention. FIG.
FIG. 2 is a perspective view in which the wheelchair footrest assembly according to the embodiment of the present invention is exploded.
3 and 4 are enlarged perspective views of the locating part of the wheelchair footrest assembly according to the embodiment of the present invention.
5 is an enlarged cross-sectional view of a locating part of a footrest assembly for a wheelchair according to an embodiment of the present invention.
6A to 6D are perspective views sequentially showing the operation and use state of a footrest assembly for a wheelchair according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions of the present invention, and they are to be construed to mean concepts that are consistent with the technical idea of the present invention and interpretations that are commonly or commonly understood in the technical field of the present invention.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, when a part includes an element, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

1 to 5, a wheelchair footrest assembly A according to an embodiment of the present invention includes a knuckle 10, a dock 20, a first support 30, a second support 40, And includes a coupler 50, an index head 60, a first ball plunger 70, and a second ball plunger 80.

The knuckle 10 is for connecting and supporting the left and right longitudinal ends of the first support 30 in a pin joint so that one of the two sides of the wheelchair, preferably a wheelchair user, The first support 30 can be mounted on the lower portion of the left frame F to support and support the first support 30.

That is, one end portion of the knuckle 10 in the longitudinal direction of the first support 30 is connected to the first shaft pin 13 by a pin.

A first mounting pipe 11 is integrally formed on the upper side of the knuckle 10 to be inserted into a frame of one side of the wheelchair, preferably a hole of the left frame F in a loose fit manner have.

Further, a plurality of elevation adjustment holes 12 for adjusting the height of the installation when the first mounting pipe 11 is mounted on the frame F of the wheelchair at regular intervals in the longitudinal direction of the first mounting pipe 11 are formed.

That is, the frame F of the wheelchair and the first mounting pipe 11 are made of a hollow body made of a material such as stainless steel or a high-strength aluminum alloy, and the first mounting pipe 11 is formed as a lower hole of the frame F of the wheelchair, The pipe 11 can be inserted and in this process any one of the hollow of the frame F of the wheelchair and the height adjusting holes 12 of the first mounting pipe 11 can be filled with a separate fastening pin The height of the knuckle 10 can be arbitrarily adjusted.

The dock 20 is for supporting one end of the second support 40 in the left and right directions in the longitudinal direction so that the other one of the two sides of the wheelchair, preferably a wheelchair user, Can be mounted on the lower portion of the right frame (F) for supporting and supporting the support (40).

That is, the dock 20 is arranged on both side frames of the wheelchair at regular intervals from the knuckle 10.

On the upper side of the dock 20, a second mounting pipe 21 for inserting and mounting the other frame of the wheelchair on the other frame, preferably a hole of the right frame F in a loose fitting manner, .

A plurality of elevation adjusting holes 22 for adjusting the height of the second mounting pipe 21 when the second mounting pipe 21 is mounted on the frame F of the wheelchair at regular intervals in the longitudinal direction of the second mounting pipe 21 are formed.

That is, the frame F of the wheelchair and the second mounting pipe 21 are made of a hollow body made of a material such as stainless steel or a high-strength aluminum alloy, and the second mounting pipe 21 is formed as a lower hole of the frame F of the wheelchair, It is possible to insert the pipe 21. In this process, any one of the hollow of the frame F of the wheelchair and the height adjusting holes 22 of the second mounting pipe 21 is filled with a separate fastening pin The height of the installation of the dock 20 can be arbitrarily adjusted.

On one side of the upper surface of the dock 20, there is formed a seating groove 23 so that one longitudinal end of the second support 40 can be stably inserted.

The first support 30 is formed in a shape having an area in which a user touches the foot with a predetermined width so that the user can comfortably put his / her foot, especially the left foot. The one end of the first support 30 in the left and right directions is connected to the knuckle 10 One (opposite) end portion is connected to the coupler 50 by a pin joint.

That is, the left end portion of the first support 30 in the longitudinal direction is connected to the knuckle 10 by the first shaft pin 13 by pin engagement, and the right end portion is connected by the second shaft pin 34 And is connected to the coupler 50 by a pin connection.

A magnet mounting portion 31 is protruded from a surface facing each other in a state of being folded so as to be parallel to the second support 40 near the left end of the first support 30 in the left and right longitudinal direction, A magnet 32 for stably holding the folded state parallel to the second support 40 is attached.

Here, the first support 30 is preferably made of a hollow body made of a material such as stainless steel or a high-strength aluminum alloy, but is not limited thereto and may be made of a metal or a synthetic resin material having excellent physical and mechanical properties such as durability and strength The cross-sectional shape of the hollow body may be formed in various shapes such as a general circular shape or a rectangular shape as well as a structural strength and weight reduction.

The second support 40 is formed in a shape having an area in which a user touches the foot of a certain width so that the user can comfortably put his foot on the foot, in particular, the right foot, and one (right) end portion in the left- And the other end (left end) is connected to the coupler 50 by a pin connection.

That is, the left end portion of the second support 40 in the left and right longitudinal direction is connected to the coupler 50 by a pin joint by a third shaft pin 44, and the right end portion is formed as a free end, 30 in a symmetrical manner.

An insertion portion 43 having a relatively small thickness or diameter is provided on the right end portion of the second support 40 in the left and right longitudinal direction thereof so as to be easily and stably inserted into the docking recess 23, Respectively.

A magnet mounting portion 41 protrudes from a surface facing each other in a state of being folded so as to be parallel to the first support 30 near the right end of the second support 40 in the left and right longitudinal direction, 41 are provided with magnets 42 for stably holding the folded state in parallel with the first support 30. [

That is, the magnet mounting portion 31 of the first support and the magnet mounting portion 41 of the second support are formed to be in close contact with each other while the first and second supports 30 and 40 are folded in parallel with each other, The magnets 32 of the first support and the magnets 42 of the second support, which are attached to the inside thereof, are provided to have different polarities to generate attracting force. For example, a permanent magnet having an N pole may be attached to the magnet mounting portion 31 of the first support, and a permanent magnet having an S pole may be attached to the magnet mounting portion 41 of the second support.

Here, the second support 40 is preferably made of a hollow body made of a material such as stainless steel or a high strength aluminum alloy, but is not limited thereto and may be made of a metal or a synthetic resin material having excellent physical and mechanical properties such as durability and strength The cross-sectional shape of the hollow body may be formed in various shapes such as a general circular shape or a rectangular shape as well as a structural strength and weight reduction.

The coupler 50 is disposed at one end of the first and second supports 30 and 40 in the longitudinal direction of the first and second supports 30 and 40 so that the first and second supports 30 and 40 can be symmetrically disposed, Part and pin-to-pin connection respectively.

In other words, the coupler 50 is provided so that the first and second supports 30 and 40 are maintained in a state in which the first and second supports 30 and 40 are extended in a row in both sides of the wheelchair, 30 while being wrapped around one end of the second shaft 40 in a longitudinal direction and the other end is connected to the third shaft pin 34 while wrapping the other end of the second support 40, (Not shown).

When the first and second supports 30 and 40 are rotated over a predetermined angle, contact interference occurs on both sides of the upper surface of the coupler 50 so that the first and second supports 30 and 40 are horizontally expanded And a stopper 51 for holding the position are mounted.

The index head 60 is mounted on the knuckle 10 to limit its free rotation such that the first support 30 rotates step by step within a certain angular range about the first shaft pin 13.

That is, on the outer side surface of the index head 60, a plurality of stop holes 61 are formed at regular intervals along the angle of the movable range at the rotation center of the first support 30, 40, a support portion 62 for supporting the first support 30 in a horizontal state so as not to rotate downward about the first shaft pin 13 is formed integrally with the first support 30 .

The first ball plunger 70 urges the stop holes 61 of the index head to stop the rotation of the first support 30 about the first shaft pin 13 at a predetermined angle, Is fixed to one surface of the first support (30) facing the stop hole (61) of the index head (60) so as to be elastically hooked by the elastic force.

Here, the first ball plunger 70 has balls (or pins) embedded at one end of a cylindrical shape so as to cause a stopping action at a predetermined position, that is, the stop hole 61, and a spring for supporting the ball is built in the cylinder. When a force is applied from the external object, the structure can be adopted that is returned to the original state by spring elasticity after entering the cylinder.

The intermittent interference between the first ball plunger 70 and the stop hole 61 of the index head allows the first support 30 to feel a click feeling stopping at a certain angle during rotation, The first support 30 and the second support 30 can be easily and easily folded and unfolded between the first and second supports 30 and 40 while preventing the first and second supports 30 and 40 from being rotated too fast downward at a time by the load, It is possible to prevent a safety accident or injury.

The second ball plunger 80 urges the second support 40 and the elastic force of the spring 40 in order to stably maintain the one end of the second support 40 in the longitudinal direction in the seating groove 23 of the dock 20, And is mounted in the seating groove 23 of the dock facing one side face perpendicular to the longitudinal direction of the second support 40 so as to cause contact interference.

That is, the second ball plunger 80 is provided to elastically contact the outer circumferential surface of the insertion portion 43 of the second support by the elastic force of the spring to cause contact interference.

Here, the second ball plunger 80 has balls (or pins) embedded at one end of a cylindrical shape so as to cause a stop action due to contact interference with the second support 40, and a spring for supporting the ball is built in the cylinder. When a force is applied from the external object, the structure can be adopted that is returned to the original state by spring elasticity after entering the cylinder.

The second ball plunger 80 prevents the second support 40 from being folded up too quickly at the same time and the insertion portion 43 of the second support is positioned in the seating groove 23 of the dock It is possible to prevent hanging.

The main operation and principle of operation of the wheelchair footrest assembly A according to the embodiment of the present invention will now be described.

First, as shown in FIG. 6A, the first and second supports 30 and 40 are fixed so as to extend in a line in a row across both sides of the wheelchair, so that a user of the wheelchair can rotate the first and second supports 30 ) ≪ / RTI > (40).

In other words, one end portion in the longitudinal direction of the first support 30 is supported vertically so that the bearing portion 62 of the index head is no longer rotated downward, and the other end (opposite end) (51) so as not to be rotated upward any more.

At the same time, the one end portion in the longitudinal direction of the second support 40 is supported in a vertical state so that the seat groove 23 of the dock is no longer rotated downward, and the other end (opposite end) 51 so that it is no longer rotated upward due to contact interference.

At this time, one longitudinal end portion of the first support 30 is prevented from being easily folded by an external force due to contact interference between the stop hole 61 of the index head and the first ball plunger 70, The first ball plunger 80 and the second ball plunger 80 are in contact with each other.

In order to minimize the volume of the wheelchair in this state, or when the user puts his foot down on the floor for a meal while eating a wheelchair, or when the user approaches the toilet to see the toilet, the second support 40 The second support 40 is released from the seating groove 23 of the dock 20 and the first support 30 is moved to the center of the first shaft pin 13 And slightly rotates upward by a certain angle.

6C, the first and second supports 30 and 40 can be folded to rotate symmetrically about the second and third shaft pins 34 and 44, If the angle between the first support 30 and the second support 40 approaches within a certain range, the magnet 32 mounted on the first support 30 as shown in Fig. 6 (d) The first support 30 and the second support 40 are naturally parallel to each other by the attractive force between the magnets 42 mounted on the second support 40, that is, the magnets 32 and 42 having different polarities So that it can be completely folded.

At this time, the first ball plunger 70 mounted on one end portion of the first support 30 in the longitudinal direction generates contact interference with the stop hole 61 located at the uppermost one of the stop holes 61 of the index head, It inhibits easy spreading.

That is, the first ball plunger 70 rotates about the first shaft pin 13 by the first support 30, and is rotated by contact interference with the stop hole 61 of the index head, that is, In the course of restricting the rotation of the first support 30 to a certain range and preventing the first support 30 and the second supports 30 and 40 from being rotated too quickly downward by their own weights at the same time to fold or unfold the first and second supports 30 and 40, Or a caregiver or the like can be prevented from being hit and hurt.

The first and second supports 30 and 40 can be held in contact with each other by sensing intermittent action between the stop hole 61 of the index head and the first ball plunger 70, Or stretching operation can be performed more easily.

6A, the first and second supports 30 and 40 are arranged to extend in a row in both sides of the wheelchair, the first support 30 is strongly held in the direction of the dock 20 The second support 40 can be naturally inserted into the seating groove 23 of the dock 20 in the longitudinal direction of the second support 40 so that the first support 40 and the second support 40 can be engaged with each other. The two supports 30 and 40 can be firmly pivoted so as to stably support the foot of the user of the wheelchair.

As described above, since the first and second supports 30 and 40 according to the embodiment of the present invention can firmly and stably maintain a state in which the first and second supports 30 and 40 are extended in a row in both directions of the wheelchair, It is possible to prevent the user's foot from falling off while the wheelchair is running, and to prevent the flexural deformation due to the load pressing the foot.

In addition, since the first and second supports 30 and 40 can be folded to one side of the wheelchair according to the user's need or selection, the volume can be minimized when the wheelchair is not used, You can sit down in the wheelchair and put your feet on the floor and eat in a comfortable position. You can also go to the toilet to get a good night's sleep, or you can sit down and relax in the wheelchair.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and substitutions may be made without departing from the spirit and scope of the invention. It will be obvious to those skilled in the art that the present invention can be widely applied to other embodiments.

Therefore, it is to be understood that modifications and variations of the features of the present invention are intended to be included within the spirit and scope of the present invention.

10: knuckle 11: first mounting pipe
12: height adjusting hole 13: first shaft pin
20: Dock 21: Second mounting pipe
30: first support 31: magnet mounting part
32: magnet 34: second shaft pin
40: second support 41: magnet mounting part
42: Magnet 44: Third shaft pin
50: coupler 51: stopper
60: Index head 61: Stop hole
70: first ball plunger 80: second ball plunger

Claims (6)

A knuckle integrally formed with a first mounting pipe for mounting on one of two sides of a wheelchair;
A dock disposed at a predetermined distance from the knuckle and integrally formed with a second mounting pipe for mounting to the other of the two sides of the wheelchair;
A first support connected at one end to the knuckle and coupled to the wheel so that a user of the wheelchair can lift his / her foot;
A second support disposed symmetrically adjacent to the first support, the second support being capable of being pushed into the dock so that the opposite end of the first support can be pushed into the dock, and a user of the wheelchair can lift his or her foot; And
A coupler connected to the other end of the first and second supports in a pin-to-pin manner so that the first and second supports are symmetrically arranged and can be folded in parallel or unfolded in a row;
And a footrest assembly for a wheelchair.
The method according to claim 1,
An index head mounted on the knuckle and provided with a plurality of stop holes spaced apart from each other by a predetermined distance along the angle of the movable range at the rotation center of the first support; And
A first ball plunger mounted on the first support and elastically hooked on the stop hole by the elastic force of the spring upon rotation thereof so as to stop the rotation of the first support relative to the knuckle at a stepwise constant angle;
Further comprising: a footrest assembly for a wheelchair.
The method according to claim 1,
A second ball plunger mounted on the dock and elastically contacted by the elastic force of the second support and the spring to cause contact interference to maintain the second support in the dock;
Further comprising: a footrest assembly for a wheelchair.
The method according to claim 1,
And a magnet having different polarities is attached to the first and second supports so that the first and second supports rotate in parallel to each other and keep the folded state in the folded state.
The method according to claim 1,
A stopper mounted on both sides of the coupler to cause contact interference when the first and second supports rotate at a predetermined angle or more to maintain the first and second supports horizontally extended to each other;
Further comprising: a footrest assembly for a wheelchair.
The method according to claim 1,
Wherein each of the first and second mounting pipes has a plurality of elevation adjusting holes for adjusting the height of the chair when the chair is mounted on the frame of the wheel chair at regular intervals in the longitudinal direction of the chair.

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