KR101715326B1

KR101715326B1 - combination structure of wheelchair and drive unit

Info

Publication number: KR101715326B1
Application number: KR1020150140949A
Authority: KR
Inventors: 김해섭; 김성섭
Original assignee: 주식회사 네오엘에프엔
Priority date: 2015-10-07
Filing date: 2015-10-07
Publication date: 2017-03-13

Abstract

In the present invention, since the angle of the support bracket fixed to the handle shaft of the drive unit is formed at an obtuse angle and the upper portion of the support bracket is formed to extend by a certain length, when the support portion is coupled to the engagement portion, the front wheel of the wheelchair can be easily lifted To a coupling structure of a wheelchair and a driving device in which ease of use is improved.

Description

A combination structure of a wheelchair and a drive unit

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a coupling structure of a wheelchair and a driving device, and more particularly, to a coupling structure of a wheelchair and a driving device, The present invention relates to a coupling structure of a wheelchair and a driving device in which a front wheel of a wheelchair can be easily lifted by a small angle of rotation when coupled to a coupling portion, thereby improving convenience in use.

Generally, a wheelchair is a walking aids for elderly people who can not use legs or have trouble walking.

The wheelchair has ring-shaped knobs on the outer side of both wheels, and the wheelchair user rolls the knob wheel to move the wheelchair.

However, such a wheelchair has a problem in that the occupant needs a lot of labor when the vehicle is traveling near by using the vehicle or when it is somewhat long distance to use the wheelchair, resulting in physical fatigue.

In order to solve such a problem, a driving device capable of automatically driving a wheelchair is additionally provided and used in combination with a frame of a wheelchair. The Korean Registered Utility Model No. 20-0381749 entitled " have.

In the detachable power transmission device of the wheelchair, since the pull frame for connecting the power transmission device and the wheelchair is large, it is inconvenient to store and move. In addition, when the wheelchair is traveling, the front portion of the wheelchair is lifted and then put in the pull frame, When the wheelchair is not used, the front portion of the wheelchair must be lifted and separated from the towing frame, so that a great deal of force is required, which is very inconvenient for the elderly and the handicapped.

In order to solve the above problems, the present applicant has filed a Korean Patent Application No. 10-2015-0052320 entitled " Combination structure of a wheelchair and a driving device ".

The combined structure of the wheelchair and the driving device is advantageous in that the driving device can be easily engaged and disengaged from the wheelchair by the operation of the first and second fixing portions while being mounted on the wheelchair, The driving device is in contact with the chest area or the knee area of the user who rides on the wheelchair, so that the user feels discomfort. As a result, the driving device and the wheelchair are difficult to engage with each other There was a problem.

When the handle of the driving device is lifted upwards while the fixing rod of the fixing bracket is engaged with the coupling hole of the coupling portion, the driving device lifts the front wheel of the wheelchair from the ground while rotating around the fixing rod, A large amount of change in the rotational angle of the wheelchair is required to be applied to the wheelchair.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a support bracket which is formed to have an obtuse angle with a support bracket fixed to a handle shaft of a drive unit, The present invention provides a combined structure of a wheelchair and a driving device in which a front wheel of a wheelchair can be easily lifted even when a small angle of rotation is used.

The present invention relates to a control apparatus for a wheelchair, comprising: a support portion, which is bent and fixed to a handle shaft of a driving device for driving a wheelchair so as to form a certain angle with a support pin;

The engaging portion is engaged with the rotation pin while the rotary engaging member and the latch lever are rotated by the elastic force of the spring when the support portion is engaged and the rotary engaging member is restored to the initial state by the operation of the latch lever when the support portion is disengaged, Wow;

A fixing unit mounted on a lower portion of the support bracket of the support unit and fixing the lower portion of the support bracket to the engagement unit by pushing up the handle of the drive unit forward while the support pin is engaged with the engagement unit;

And a connection unit coupled to the coupling unit to connect the frame of the wheelchair.

According to the combined structure of the wheelchair and the driving device of the present invention, since the angle of the supporting bracket fixed to the handle shaft of the driving device is formed at an obtuse angle and the upper portion of the supporting bracket is formed to extend by a certain length, So that the front wheel of the wheelchair can be easily lifted, thereby improving the usability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
2 is an exploded perspective view
3 is a side view of the state before the driving device and the wheelchair are engaged;
4 is a side enlarged view of a state before the supporting part and the engaging part of the present invention are engaged;
5 is a side view showing a state in which the support portion of the present invention is coupled to the coupling portion
FIG. 6 is a plan view of the separating preventing portion of the present invention separated from the engaging portion;
Fig. 7 is a side enlarged view in a state in which the supporting portion and the engaging portion are engaged;
FIG. 8 is a side view showing a state where the fixing portion of the present invention is fixed to the coupling portion
Fig. 9 is a side enlarged view showing a state where the fixing part and the engaging part are fixed
10 is a side view showing a state in which a driving device separated from a wheelchair is mounted;
11 is a plan view showing a state in which the separation preventing part of the present invention is fixed to the supporting part and the engaging part,

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of the present invention, and FIG. 2 is an exploded perspective view of the present invention.

The present invention relates to a coupling structure 100 of a wheelchair and a driving device in which a pair of supporting brackets 111 are bent and fixed to a handle shaft 22 of a driving device 20 for driving a wheelchair 10, And a support pin 112 is mounted on the upper part of the support bracket 111 to be fixed to the coupling part 120. When the support part 110 is engaged with the rotation coupling member 123, When the lever 122 is rotated by the elasticity of the spring 124 and the support pin 112 is engaged and the rotary engaging member 123 is restored to the initial state by the operation of the latch lever 122 when the support portion 110 is disengaged The support pin 112 is mounted on the lower part of the support bracket 111 of the support part 110 and is supported by the engagement part 120 in a state where the support pin 112 is engaged with the engagement part 120. [ A fixing part 130 for fixing the lower part of the supporting bracket 111 to the engaging part 120 while pushing the handle 21 of the device 20 forward, Configuration and, being configured to include a connecting portion 140 connecting the frame 11 of the wheelchair 10 is coupled to the coupling section 120, if it more specifically as follows.

The bent angle of the upper and lower portions of the support bracket 111 is formed at an obtuse angle.

The coupling unit 120 includes a coupling member 121 formed at a predetermined distance from the coupling body 141 of the coupling unit 140 and fixed by a coupling rod 121a, And a latch lever 122 which is coupled to the coupling member 121 under the latch lever 122 and is pivotally coupled to the coupling member 121, A rotation engaging member 123 that engages with the support pin 112 mounted on the engaging groove 123a while the engaging piece 123b is engaged with and disengaged from the engaging groove 122a by being operated elastically, And a spring 124 coupled to the latch lever 122 and the rotary coupling member 123 to elastically rotate and restore the latch lever 122 and the rotary coupling member 123, respectively.

The spring 124 coupled to the latch lever 122 of the spring 124 presses the upper end of the latch lever 122 downward and the spring 124 coupled to the rotational engagement member 123 is rotated by the rotational engagement member 124. [ The front end portion of the engaging groove 123 is pressed counterclockwise so that the engaging groove 123a opens forward.

The fixing portion 130 is provided with a fixing hook 131 which is coupled to the lower portion of the supporting bracket 111 by a rotation guide pin 131a and is fixed to the lower portion of the fixing hook 131, The other end of the hook 131 is fixed to the inside of the supporting bracket 111 by a restoring spring 132. The fixing pin 132 fixes the restoring spring 132 to the supporting bracket 111 And a rotation control pin 134 that is fixed to the support bracket 111 on the upper portion of the fixing hook 131 and controls the rotation of the fixing hook 131. The lower portion of the support bracket 111 And a fixing space 135 formed on both sides.

The connection unit 140 includes a connection body 141 fixed to the connection member 121 of the connection unit 120 and a connection rod 142 mounted on both sides of the connection body 141 A clamp 143 fixed to an end of the connecting rod 142 and a control knob 144 for adjusting the clamp 143 and fixing the clamp 143 to the frame 11 of the wheelchair 10, And a mounting member 145 mounted on the lower portions of both sides of the connecting body 141 and contacting with the ground while being rotated by the rotation guide plate 145a to mount the driving device 20 when the wheelchair 10 is not used .

And a separation preventing part 150 mounted on one side of the supporting part 110 to prevent the supporting part 110 and the engaging part 120 from being separated from each other when the driving device 20 is set up.

The detachment preventing part 150 includes a mounting hole 151 formed at one side of the supporting bracket 111 and a detachment preventing body 150 formed in the mounting hole 151, And an elastic member 153 coupled to the inside of the detachment prevention body 152. The elastic member 153 is coupled to the detachment prevention body 152 and elastically operated by the elastic member 153, And the detachable pin 154 is formed on the engaging member 121 of the engaging portion 120 and is engaged with the detachment pin 152. [ 155).

Hereinafter, the combining and separating process of the present invention will be described in detail.

A driving device 20 for driving the wheelchair 10 is provided with a handle 21 for adjusting the direction of the handle shaft 22 on which the battery is mounted and a wheel 23 And the wheelchair 10 is driven by the power of the battery mounted on the handle shaft 22 to enable traveling.

A pair of support brackets 111 are coupled to the handle shaft 22 of the driving device 20 and fixed using fixing bolts (not shown).

The support bracket 111 is spaced apart from the support bracket 111 by a predetermined distance so that the engagement portion 120 can be engaged with the support bracket 111. A support pin 112 is fixed to the upper end of the support bracket 111 .

The upper and lower portions of the support bracket 111 are bent at an obtuse angle, and the upper and lower portions of the support bracket 111 extend to a predetermined length.

A fixing part 130 is fixed to the lower part of the supporting bracket 111 to fix the supporting part 110 to the engaging part 120.

A fixing hook 131 is rotatably fixed to the fixing bracket 111 by a rotation guide pin 131a inside the fixing bracket 111. A restoring spring 132 is provided below the fixing hook 131, One end of the fixing hook 131 is closely attached to the upper portion of the fixing hook 131 and the other end of the fixing hook 131 is closely attached to the inside of the supporting bracket 111.

A rotation control pin 134 is mounted on a central upper portion of the fixed hook 131 so as to prevent the fixing hook 131 from rotating further when the upper portion is rotated by the return spring 132, do.

A coupling part 120 for coupling the supporting part 110 is fixed to the coupling part 140 which is coupled to the frame 11 of the wheel chair 10.

The engaging portion 121 is coupled to the center of the connecting body 141 of the connecting portion 140 and the latch lever 122 and the rotational engaging member 123 are coupled to each other. A space portion is formed so as to be engaged with the bolt member and is fixed so as not to flow to the left and right using the bolt member.

A latch lever 122 is rotatably coupled to the inside of the coupling member 121 by an axial pin 122 '.

A spring 124 is coupled to the shaft pin 122 so that one end of the spring pin 122 is fixed to the upper end of the latch lever 122 and the other end is fixed to the front end of the coupling member 121, Is pressed downward about the shaft pin 122 'by the elasticity of the spring 124. [

A rotation coupling member 123 is rotatably coupled to the lower portion of the latch lever 122 by an axial pin 123 '.

A spring 124 is coupled to the shaft pin 123 'so that one end thereof is fixed to the front of the lower end portion of the rotary engaging member 123 and the other end thereof is fixed to the front end portion of the engaging member 121, The elastic member 123 presses the shaft pin 123 'backward by the elasticity of the spring 124.

The connecting body 141 of the connecting part 140 is coupled and fixed to the connecting part 121 of the connecting part 120. The connecting rod 142 is connected to both ends of the connecting body 141, And the end of the bolt is protruded to a lower portion of the connection body 141. [

A clamp 143 is connected to the end of the connection rod 142 to connect and connect the connection part 140 to the frame 11 of the wheelchair 10. The clamp 143 is rotated in one direction, The adjusting knob 144 for adjusting the tightening of the pressing member 143 is engaged.

In addition, a mounting member 145 is rotatably mounted on the lower ends of both ends of the connection body 141.

The stationary member 145 is connected to the connecting body 141 at the end of the bolt that connects the connecting rod 142 to the rotation guide plate 145a to enable rotation of the stationary member 145, The load is supported when it is mounted.

After the clamp 143 is extended to the maximum extent to receive the end of the frame 11 of the wheel chair 10 in the state where the coupling part 140 is coupled to the coupling part 120 as described above, So that the clamp 143 fastens the frame 11 to the frame 11 of the wheelchair 10 by firmly fixing the connecting portion 140. [

A detachment preventing portion 150 is coupled to one side of the support bracket 111 of the support portion 110 to prevent the support portion 110 and the engagement portion 120 from being separated from each other.

The detachment preventing part 150 is coupled to the mounting hole 151 formed at one side of the supporting bracket 111 by screwing and fitting an anti-detachment body 152, 153 are mounted.

The detachment prevention pin 154 is mounted on the outer side of the detachment prevention body 152 and is operated by elasticity of the elastic member 153 to be coupled with the coupling hole 155 formed in the coupling member 121.

3 to 5, in order to engage the driving device 20 with the wheelchair 10, the occupant of the wheelchair 10 first moves the coupling part 120 The latch lever 122 is rotated about the pivot pin 122 'by the elasticity of the spring 124 so that the latching groove 122a is engaged with the engagement piece 123b, The engagement state of the rotary coupling member 123 is released.

When the engagement of the rotation coupling member 123 is released, the rotation coupling member 123 is rotated counterclockwise around the shaft pin 123 'by the restoring force of the spring 124, Is engaged with the rear end of the engaging member 121, and the engaging groove 123a is opened.

The occupant of the wheelchair 10 pushes the wheel forward while holding the handle 22 of the driving device 20, thereby causing the driving device 20 to tilt at a certain angle.

At this time, the angle between the handle shaft 22 of the driving unit 20 and the ground surface is about 50 degrees, and the upper part of the support bracket 111 fixed to the handle shaft 22 is in a horizontal state.

6 to 7, the support pin 112 coupled to the support bracket 111 is inserted into the open coupling groove 123 of the rotation coupling member 123, When the handle 21 of the drive unit 20 is pulled toward the occupant while being coupled to the driver 123a of the drive unit 20, the rotational engagement member 123 is rotated clockwise around the axis pin 123 ' Direction.

When the engaging piece 123b of the rotating coupling member 123 rotating as described above is engaged with the latch groove 122a of the latch lever 122 and the latch lever 122 is moved downward by the elasticity of the spring 124 The supporting pin 112 of the supporting part 110 is coupled to the engaging part 120 while being engaged with the engaging part 123b of the rotary engaging member 123. [

At this time, when the detachment prevention pin 154 of the detachment prevention part 150 mounted on one side of the support part 110 is pulled outward, the detachment prevention pin 154 compresses the elastic member 153, The detachment pin 154 is detached from the accommodation space 152a and the detachment pin 154 is rotated by 90 degrees so that the end of the fixing piece 154a is caught by the end of the detachment body 152. [

8 to 9, when the handle 21 of the driving unit 20 is pushed up in a state where the support pin 112 of the support unit 110 is engaged with the coupling unit 120, The driving unit 20 is supported by a wheel so that the front wheel of the wheel chair 10 is elevated from the ground by a predetermined height while the supporting unit 112 of the supporting unit 110 rotates about the center.

Since the upper portion of the support bracket 111 of the support portion 110 is formed to have a predetermined length, the principle of the lever is used to easily lift the front wheel of the wheelchair 10 with a small angle of rotation.

That is, if the handle 21 of the driving unit 20 is pushed forward by 14 degrees, the front wheel of the wheel chair 10 can be raised by about 63 mm.

When the driving device 20 rotates about the support pin 112 as described above, the fixing hook 131 of the fixing part 130 mounted on the lower part of the supporting bracket 111 is engaged with the elastic member 153 The connecting rod 121a is fixed to the fixing space 135 formed on the supporting bracket 111 so that the wheel barrel 10 and the driving device 20 are completed.

The passenger of the wheelchair 10 can drive the wheelchair 10 by the battery power of the driving device 20 when the combination of the wheelchair 10 and the driving device 20 is completed.

10 to 11, when the driving device 20 is detached from the wheelchair 10, the fixing device 130 is fixed to the lower portion of the supporting bracket 111, The hook 131 is disengaged from the engaging rod 121a of the engaging member 121. [

The mounting hole 151 formed in the supporting bracket 111 of the supporting part 110 and the engaging member 121 of the engaging part 120 are formed in a state in which the fixing part 130 is separated from the engaging part 120, The engaging holes 155 formed in the engaging holes 155 are located on the same line.

In this state, if the detachment prevention pin 154 of the detachment prevention part 150 is slightly pulled outward and rotated by 90 degrees, the detachment prevention pin 154 is restored by the elasticity of the elastic member 153, Is coupled to the coupling hole 121a formed in the coupling member 121 to fix the supporting portion 110 and the coupling portion 120. [

The control knob 144 of the connection part 140 is rotated in one direction so that the clamp 143 fixed to the frame 11 of the wheel chair 10 can be rotated in a state where the support part 110 and the coupling part 120 are engaged, The wheelchair 10 is separated from the connecting portion 140 so that the front wheel can be manually driven without contacting the ground while the driving wheel 20 is in contact with the ground. And the mounting member 145 can be stored or mounted separately in contact with the ground.

Although the present invention has been described in connection with certain exemplary embodiments and drawings, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be interpreted to limit the scope of the present invention. It must be interpreted in terms of meaning and concept. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only examples of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

100: Coupling structure
110: Support part 111: Support bracket
112: support pin 120:
121: engaging member 122: latch lever
123: rotation coupling member 124: spring
130: fixing part 131: fixing hook
132: restoration spring 133: fixing pin
134: rotation control pin 140:
141: connecting body 142: connecting rod
143: Clamp 144: Adjustment knob
145: mounting member 150: detachment preventing member
151: mounting hole 152: detachment body
153: elastic member 154: detachment pin
155:

Claims

A support portion bent and fixed to a handle shaft of a driving device for driving a wheelchair so as to form a predetermined angle, and a support pin mounted on an upper portion of the support bracket and fixed to the coupling portion;
The engaging portion is engaged with the rotation pin while the rotary engaging member and the latch lever are rotated by the elastic force of the spring when the support portion is engaged and the rotary engaging member is restored to the initial state by the operation of the latch lever when the support portion is disengaged, Wow;
A fixing unit mounted on a lower portion of the support bracket of the support unit and fixing the lower portion of the support bracket to the engagement unit by pushing up the handle of the drive unit forward while the support pin is engaged with the engagement unit;
And a coupling portion coupled to the coupling portion to connect the frame of the wheelchair.

The method according to claim 1,
Wherein a bending angle between an upper portion and a lower portion of the support bracket is formed at an obtuse angle [obtuse angle].

2. The connector according to claim 1,
A pair of engaging members formed at predetermined intervals in the connecting body of the connecting portion and fixed by a connecting rod;
A latch lever which is coupled between the coupling members by an axial pin to form a latching groove which is operated by elasticity of the spring;
A rotation coupling member coupled to the coupling member at the lower portion of the latch lever and coupled to the support pin mounted on the coupling groove, the coupling pin being engaged and disengaged from the engagement groove by operation of elasticity of the spring;
And a spring coupled to the latch lever and the rotary coupling member to elastically rotate and restore the latch lever and the rotary coupling member, respectively.

The method of claim 3,
The spring coupled to the latch lever of the spring urges the upper end of the latch lever downward and the spring coupled to the rotary coupling member presses the front end portion of the rotary coupling member counterclockwise to open the coupling groove forward A combination structure of a wheelchair and a driving device.

[2] The apparatus according to claim 1,
A fixing hook coupled to a lower portion of the support bracket by a rotation guide pin;
A restoring spring mounted on a lower portion of the fixing hook and having one end pressurizing the lower portion of the fixing hook upward and the other end being closely fixed to the inside of the supporting bracket;
A fixing pin for fixing the restoring spring to the supporting bracket;
A rotation control pin fixed to the support bracket on the upper portion of the fixed hook to control rotation of the fixed hook;
And a fixing space formed on both lower sides of the support bracket.

The connector according to claim 1,
A connection body fixed to a coupling member of the coupling portion;
A connection rod mounted on both sides of the connection body;
A clamp fixed to an end of the connecting rod;
A control knob for adjusting the clamp to fix the clamp to the frame of the wheelchair;
And a mounting member mounted on the lower portions of both sides of the connecting body so as to be brought into contact with the ground while being rotated by the rotation guide plate to mount the driving device when the wheelchair is not in use. .

The method according to claim 1,
Further comprising a detachment preventing portion which is mounted on one side of the supporting portion to prevent the supporting portion and the engaging portion from being separated from each other when the driving device is erected.

[7] The apparatus of claim 7,
A mounting hole formed on one side of the support bracket;
A detachment body mounted on the mounting hole to form a receiving space;
An elastic member coupled to the inside of the detachment body;
A detachment pin coupled to the detachment body and coupled to the receiving space of the stationary piece while being elastically operated by an elastic member;
And a coupling hole formed in the coupling member of the coupling portion and coupled with the detachment pin.