KR20130117602A - Folding electric walking aid vehicle - Google Patents

Abstract

PURPOSE: A folding electric walking aid vehicle is provided to be driven by an electromotive force and to maintain its speed at an uphill or a downhill. CONSTITUTION: A folding electric walking aid vehicle includes a main frame (1), an auxiliary frame (2), a power unit, a control unit (4), and a folding control unit. Driving wheels are combined with the bottom of the main frame which is vertical to the surface. Handles are formed on the upper end of the main frame. The auxiliary frame is horizontally combined with the main frame. The power unit provides electric power to operate the driving wheels. The control unit controls the power unit. The folding control unit is folded in parallel with the auxiliary frame.

Description

Folding ELECTRIC WALKING AID VEHICLE

The present invention relates to a foldable electric walking assistance vehicle that can walk reliant on patients or elderly people unstable walking, more specifically can be driven by the electric power, easy to use, can be folded, easy to carry and store And, it is possible to instantaneous rapid acceleration so that it is easy to cross over the slope or the barrier, and relates to a foldable electric pedestrian assisted vehicle to maintain a constant speed in the upward or downward slope.

In general, the walker is popular for patients or elderly people who are difficult to walk independently due to uncomfortable movement. In the most basic configuration, the steel pipe is bent to a suitable size and shape to produce a frame, and a handle is formed on the upper part.

Therefore, when the user moves forward, the walker lifts and moves forward, and then walks forward while relying on the body.

The improved walker is equipped with wheels on the lower part of the frame to make it easier to move when pushing forward or pulled, and a cushion on the upper part to provide a safe cushioning feeling when the body is relied on. have.

In addition, the conventional walker has been provided with an auxiliary chair so that the user can sit and relax.

Prior arts related to this have been disclosed in the Korean Registered Room No. 0362325 "Foldable Patient Walker."

Looking at the prior art briefly, since a separate chair is mounted on the walker, the patient can rest for a while while moving, and the chair can be adjusted to fit the length of the patient's leg because the height of the chair is freely adjusted, and thus the structure is easy to fold. The volume can be reduced to about 1/2.

However, since the walker according to the prior art has to be pushed or pulled forward by the user's manpower, it is difficult to use a weak patient or the elderly.

In addition, the wheel is too small to go over the shallow step of the sidewalk block while walking, and people who are difficult to use the driving force to go over the shallow step, there was a problem that even easy to use.

And there was a risk that the speed is accelerated on the down ramp, it was too difficult to walk while pushing on the up ramp.

Korean Registered Room No. 0362325.

The present invention has been made to solve the above-mentioned problems of the prior art, by applying an electric drive device can be easily used by users with weak energy, it is possible to walk without effort because it is possible to adjust the speed even on a step or slope. The purpose of the present invention is to provide a folding electric walking assistance vehicle that can be easily folded and portable, and can be improved in safety.

The above object of the present invention, the main wheel is coupled to the lower wheel, is formed perpendicular to the ground and the handle is formed on the upper end; An auxiliary frame coupled to a hinge parallel to the ground from one lower side of the main frame, and having an auxiliary frame mounted at one end thereof; A power unit formed under the main frame to provide electric power for driving the main wheel; A control unit formed at one side of the handle to control driving and stopping of the power unit; It can be achieved by a foldable electric walking assistance vehicle comprising a; folding operation to rotate the main frame about the hinge to fold horizontally with the auxiliary frame.

The folding manipulation unit is coupled to the auxiliary frame through the inner surface of the main frame; First and second bushings coupled to an outer circumferential surface of the shaft and symmetrically coupled to left and right sides thereof; A shaft pin formed to protrude from the outer ends of the first and second bushing parts and coupled to a pin coupling hole formed in an inner surface of the main frame; First and second brackets having a through hole formed to insert the shaft pin and disposed close to an inner surface of the main frame; First and second knobs respectively formed on one side of the first and second bushing parts and capable of being held by a user; And an elastic body coupled to the shaft and coupled between the first and second bushing parts to provide a pushing force.

First and second bushings coupled to the shaft by being spaced apart at regular intervals; And a connecting rod connecting the first and second bushings.

Guide means for guiding the sliding of the first and second bushing portion is further formed, the guide means, the guide is formed in parallel with the shaft; And a guide roller formed in the guide and in close contact with the connecting rod.

The middle portion of the main frame is characterized in that the chair that the user can sit is coupled to be folded.

The chair is coupled to the main frame by the shaft pin to form an "X" shape and the chair frame formed on the top handle bar; A lower plate coupled to a lower end of the chair frame and horizontally mounted to the main frame; And a saddle attached to an upper surface of the lower plate, wherein the side of the chair frame has a long hole formed to guide the main frame and the shaft pin.

The control unit includes a control panel attached to one side of the handle; It characterized in that it comprises a; a plurality of operation mode switches formed on the control panel.

The plurality of operation mode switches include an on / off button; A momentary acceleration button; Forward and reverse control switches; A speed control switch; It is characterized by including a headlight, fog light, taillight switch.

The upper portion of the main frame is characterized in that the cradle is formed to mount the navigation or smart phone.

According to the present invention, by applying the electric drive device can be easily used even for users with weak energy, by applying the instantaneous acceleration mode has the effect that the torque and power is rapidly increased can be easily moved on the barrier or slope.

In addition, since the acceleration or deceleration is automatically performed by the inclination sensor on the downhill or hill road, it is possible to prevent the risk of an accident and to correct the speed.

In addition, since the individual braking of both the driving wheels and the first and second electric motors is possible, the turning radius is short, so that the turning operation can be performed quickly.

And when sitting on a chair, the braking state can be maintained by the operation of pulling the hand brake downward, so it is convenient to use and the brake operation is easy in the sitting state.

In addition, since the main frame and the chair can be folded, the volume can be minimized, thereby making it easy to carry and store.

1 is a front perspective view showing a folding electric walking assistance vehicle according to an embodiment of the present invention,
Figure 2 is a rear perspective view showing a folding electric walking assistance vehicle according to an embodiment of the present invention,
Figure 3 is a side view showing a folding electric walking assistance vehicle according to an embodiment of the present invention,
4 is a circuit diagram showing the main circuit configuration of the folding electric walking assistance vehicle according to an embodiment of the present invention,
5 is a plan view showing a 'power unit' of the folding electric walking assistance vehicle according to an embodiment of the present invention,
6 is a partial perspective view showing a 'folding control unit' in the folding electric walking assistance vehicle according to an embodiment of the present invention;
7 and 8 are a plan view showing the locking and releasing operation of the 'folding control unit' in the folding electric walking assistance vehicle according to an embodiment of the present invention,
9 is a side view showing the locking and releasing operation of the 'folding control unit' in the folding electric walking assistance vehicle according to an embodiment of the present invention,
10 is a perspective view showing a folded state of the folding electric walking assistance vehicle according to an embodiment of the present invention,
11 is a side view showing a folded state of the folding electric walking assistance vehicle according to an embodiment of the present invention;
12 is a plan view schematically showing the turning radius of the folding electric walking assistance vehicle according to an embodiment of the present invention in comparison with the prior art;
13 and 14 are side views showing the folding operation of the 'chair' of the folding electric walking assistance vehicle according to an embodiment of the present invention,
15 is a perspective view showing a 'control unit' of the folding electric walking assistance vehicle according to an embodiment of the present invention.

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

In the accompanying drawings, Figure 1 is a front perspective view showing a folding electric walking aid according to an embodiment of the present invention, Figure 2 is a rear perspective view showing a folding electric walking assistance vehicle according to an embodiment of the present invention, Figure 3 is Figure 4 is a side view showing a folding electric walking aid according to an embodiment of the present invention, Figure 4 is a circuit diagram showing the main circuit configuration of the folding electric walking assistance vehicle according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention 6 is a plan view showing a 'power unit' of the folding electric walking assistance vehicle according to the present invention, FIG. 6 is a partial perspective view showing a 'folding control unit' in the folding electric walking assistance vehicle according to an embodiment of the present invention, FIGS. A plan view showing the locking and releasing operation of the 'folding control unit' in the folding electric walking assistance vehicle according to an embodiment of Figure 9 'folding in the folding electric walking assistance vehicle according to an embodiment of the present invention Figure 10 is a side view showing the locking and unlocking operation of the operation unit, Figure 10 is a perspective view showing a folded state of the folding electric walking aid vehicle according to an embodiment of the present invention, Figure 11 is a folding electric walking aid vehicle according to an embodiment of the present invention Figure 12 is a side view showing a folded state, Figure 12 is a plan view schematically showing the turning radius of the folding electric walking assistance vehicle according to an embodiment of the present invention in comparison with the prior art, Figure 13 and Figure 14 is an embodiment of the present invention Side view showing the folding operation of the 'chair' of the folding electric walking assistance vehicle according to, Fig. 15 is a perspective view showing a 'control unit' of the folding electric walking assistance vehicle according to an embodiment of the present invention.

1 to 15, the folding electric walking assistance vehicle A according to an embodiment of the present invention includes a main frame 1, an auxiliary frame 2, a power unit 3, and the like. And a control unit 4 and a folding operation unit 12.

The main frame 1 is formed to be substantially perpendicular to the ground, the driving wheel 5 is coupled to the bottom, the handle 16 is formed at the upper end.

The cradle 10 is formed on the upper portion of the main frame 1 to mount the navigation or smartphone.

The auxiliary frame 2 is coupled in parallel to the ground from the lower one side of the main frame 1, the driven wheel 6 is mounted at one end.

The driven wheel 6 is a kind of caster coupled with a pin shaft to the auxiliary frame 2 to enable autonomous rotation.

The power unit 3 is formed under the main frame 1 to provide electric power for driving the main wheel 5.

The folding manipulator 12 rotates the main frame 1 about the hinge g to horizontally fold the auxiliary frame 2.

The control unit 4 is formed on one side of the handle 16 to control the driving and stopping of the power unit (3).

Each structure mentioned above is demonstrated in detail.

The power unit 3 includes a bed (not shown) formed at the bottom of the main frame 1; First and second electric motors 341 and 342 seated on the bed and respectively connected to the both driving wheels 5; A battery pack 35 for supplying power to the first and second electric motors 341 and 342; A charger 36 for charging the battery pack 35; It comprises a motor controller 38 for controlling the rotational force of the driving wheel (5) by controlling the driving of the first and second electric motors (341, 342).

The charger 36 is usually supplied with AC 220V power to charge the battery pack 35 so that power can be exerted for a predetermined time without an external power supply.

In addition, the inclination sensor unit 39 is attached to the motor controller 38 to detect the inclination angle and control the increase or the decrease of the rotation speed of the first and second electric motors 341 and 342.

Preferably, the inclination angle θ detected by the inclination sensor unit 39 is ± 10 to 13 °, and the inclination sensor unit 39 detects this when entering the inclined road to control the speed.

The tilt sensor 39 includes an upward tilt sensor 391 and an acceleration setting variable resistor R1 for detecting an upward angle, a downward tilt sensor 392 and a deceleration setting variable resistor R2 for detecting a downward angle. Is connected to 38.

An on / off button 41 of the controller to be described later; A momentary acceleration button 42; Forward and backward control switches 43; The speed control switch 44 is connected to the motor controller 38.

Accordingly, the speed is changed by the inclination sensor unit 39 and the acceleration and deceleration setting variable resistors R1 and R2.

Using the speed control volume (Min ↔ Max) to accelerate the acceleration and deceleration system by connecting the upper part in parallel with the center and accelerating the lower part in parallel.

The operation principle of the tilt sensor unit 39 is designed to operate in the same way by applying to a system connected in parallel to the variable resistors R1 and R2 so as to accelerate on the uphill and decelerate on the downhill.

Meanwhile, a folding manipulation unit 12 is included to rotate the main frame 1 downward so as to be folded horizontally with the auxiliary frame 2.

As shown in FIGS. 5 to 8, the folding manipulation unit 12 includes a shaft 13 penetrating the inner surface of the main frame 1 and coupled to the auxiliary frame 2; First and second bushings 14 and 14 'coupled to the outer circumferential surface of the shaft 13 and symmetrically coupled to both left and right sides thereof; A shaft pin (19) formed to protrude on the outer ends of the first and second bushing parts (14, 14 ') and coupled to a pin coupling hole (h) formed on the inner surface of the main frame (1); A through hole is formed so that the shaft pin 19 is inserted, and the bracket 15 is disposed close to the inner surface of the main frame (1); First and second knobs 171 and 172 formed on one side of the first and second bushings 14 and 14 ', respectively, to be gripped by a user; And an elastic body 18 coupled to the shaft 13 and coupled between the first and second bushing parts 14 and 14 'to provide a pushing force.

The first and second bushings 14 and 14 'are symmetrically formed on the shaft 13 by being spaced apart at regular intervals, and thus are described with the same reference numerals.

The first and second bushings 14 and 14 'include: first and second bushings 141 and 142 coupled to the shaft 13; The connecting rod 143 connects the first and second bushings 141 and 142.

Also included is a guide means 16 for guiding the sliding of the first and second bushings 14, 14 ′.

The guide means 16 includes: a guide 162 having a square pipe shape formed in parallel with the shaft 13; The guide 162 is coupled to the bracket coupled to the outer hex head bolt to the outer circumference of the guide 162 is in close contact with the outer surface of the connecting table 143, the rolling roller 164;

Therefore, when the first and second bushing parts 14 and 14 'are moved inward or outward, the guide roller 164 is rolled on the connecting rod 143 to support the linear motion stably.

The driving wheels 5 are respectively coupled to both ends of the bed formed at the lower end of the main frame 1, and each driving wheel 5 is coupled to the drive shaft 51 so as to be rotatable individually, and each drive shaft 51 is formed in a first manner. And a shaft 54 and a serration 52 of the reducer connected to the second electric motors 341 and 342.

Of course, besides serration bonds, spline bonds can be applied.

In addition, the driving wheel (5) preferably uses an alloy wheel (alloy wheel [Al 6061]) has a rigidity and excellent durability, it is formed in a somewhat larger diameter 30 ~ 40cm to provide a sense of stability during driving (movement) can do.

As shown in FIG. 3, the first and second electric motors 341 and 342 have first and second brake switches B1 and B2 respectively connected to the hand brakes 8 formed on the handle 16, respectively. Connected.

Accordingly, since braking of the first and second electric motors 341 and 342 is possible by the operation of the braking means connected to the first and second brake switches B1 and B2, as shown in FIG. The minimum turning radius is achieved by the independent brake control method.

On the other hand, as shown in (b) of FIG. 12, the conventional turning type drive (four-wheeled vehicle) has a turning radius (rotation radius) to increase the rotation radius according to the structure or characteristics of the product or speed during rotation do.

On the contrary, the present invention has a turning radius close to 0 ° due to the driven wheel 5 and the driven wheel 6 capable of autonomous rotation, in which the braking means are individually operated.

That is, the turning radius can be minimized by manipulating the hand brake 8 in the direction to be rotated to exert an individual braking force to stop one electric motor and drive the other electric motor.

To this end, the driving wheel (5) is provided with first and second brake switches (B1, B2) which are turned on and off by pulling the wire when the lever of the hand brake (8) is operated. Braking means for providing a braking force by the brake switches B1 and B2 is provided.

In addition, the rear driven wheel 6 can minimize the turning radius by applying a caster system that is autonomously rotated.

Accordingly, when the first and second brake switches B1 and B2 are simultaneously turned on by pulling the levers of the hand brakes 8 on both sides, the brakes may be in a braking state.

In addition, by turning only one lever of the hand brakes 8 on both sides to allow only one of the first and second brake switches B1 and B2 to be turned on, the turning drive can be performed with a minimum turning radius.

The lever of the hand brake 8 is formed in a hook shape, and the first and second brake switches B1 and B2 are operated to be in a braking state during up and down rotation.

Therefore, the user grasps the handle 16 and pulls the levers of both hand brakes 8 upward while braking.

In addition, when the user rests on the chair 7, the braking state can be maintained by pulling the lever of the hand brake 8 downward.

Meanwhile, referring back to FIG. 1, a case 200 is mounted to cover the power unit 3, and a headlamp 210 and a fog lamp 220 are formed in the case 200. And the rear lamp 230 is formed at the rear end of the auxiliary frame (2).

The flashing of the headlamp 210, the fog lamp 220, and the taillight 230 is performed by the operation of the controller 4.

Meanwhile, the middle portion of the main frame 1 includes a chair 7 that can be folded and coupled to the user.

The chair (7) is coupled to the main frame (1) by the shaft pin (P) to form an "X" shape and the chair frame (72) formed with a cushion bar (71) at the top; A lower plate 73 coupled to a lower end of the chair frame 72 and horizontally mounted to the main frame 1; The saddle 74 attached to the upper surface of the lower plate 73; includes, and the long side 720 is formed on the side of the chair frame 72 to guide the main frame 1 and the shaft pin (P).

Accordingly, when the main frame 1 is folded, the shaft pin P may be moved along the long hole 720 so that the chair frame 72 may be horizontally rotated, and the saddle 74 may be horizontally positioned to be folded. Can be.

If it is necessary to maintain the braking state for safety while sitting on the chair 7, the braking means can be kept in a braking state by pulling the lever of the hand brake 8 downward.

Meanwhile, in the folding electric walking assistance vehicle A according to the present invention, an operation mode of forward, backward, and rapid acceleration may be implemented by the operation of the controller 4.

The controller 4 includes a control panel 40 attached to one side of the handle 16, as shown in FIG. It consists of a plurality of operation mode switches formed on the control panel 40.

The plurality of operation mode switches include an on / off button (41); A momentary acceleration button 42; Forward and backward control switches 43; A speed control switch 44; It is comprised by the headlight switch 45, the fog light switch 46, and the tail light switch 47.

The instantaneous acceleration mode is an additional function that allows the momentary increase of torque and power so that it can be easily moved on a barrier or a slope.

Press the momentary acceleration button 42 in the form of a push button on the control panel 40 to perform a momentary acceleration operation, the momentary acceleration speed is set to increase by about 30% by a fixed ratio on the basis of the current moving speed.

Hereinafter, the operation of the present invention will be described.

When the on / off button 41 is pressed and operated once, the first and second electric motors 341 and 342 are simultaneously driven to move forward or backward.

At this time, the forward and reverse speed is adjusted by turning the speed control switch (44).

On the other hand, if you meet the bump while driving, because the momentary acceleration must be crossed over by pressing the momentary acceleration button 42 to momentarily accelerate.

When the instantaneous acceleration signal is given, the motor controller 38 speeds up the rotational speeds of the first and second electric motors 341 and 342 to produce the speed.

On the other hand, when the hill length or the downhill road while driving, the tilt sensor unit 39 transmits a detection signal for the inclination to the motor controller 38 by the operation of the first and the control of the motor controller 38 received this. The speeds of the second electric motors 341 and 342 are corrected.

That is, the downhill road decelerates the first and second electric motors 341 and 342, and the hill road accelerates the first and second electric motors 341 and 342.

On the other hand, when changing the direction, the handbrake 8 corresponding to the direction to be rotated is operated, and accordingly, any one of the first and second brake switches B1 and B2 is turned on to operate the corresponding first and second parts. As the electric motors 341 and 342 are stopped, the turning drive is possible with a minimum turning radius.

On the other hand, at night or on a cloudy day with poor visibility, the headlight switch 45, the fog light switch 46, the tail light switch 47 may be appropriately selected to turn on the headlight, the fog light, the tail light, and the safety may be further improved.

On the other hand, when it is necessary to fold and store, when the first and second knobs 171 and 172 are held and retracted, the elastic body 18 is contracted and the first and second bushings 14 and 14 'are close to each other. 8 and 9 (b), the shaft pin 19 is released from the pin coupling hole h, so that the engaged state is released.

Thereafter, the main frame 1 is rotated and folded to the inside of the auxiliary frame 2 to be almost horizontal.

In addition, as shown in FIGS. 10 and 11, when the chair 7 is also folded, the chair frame 72 is rotated in the long hole 720 so that the chair 7 may be folded in parallel with the main frame 1.

On the other hand, when the main frame 1 is to be raised and deployed, when the main frame 1 is rotated upward, as shown in Figs. 7 and 9 (a), the shaft pin 19 has a pin coupling hole (h). By being coupled to the rigid coupling state can be maintained.

In addition, as shown in FIG. 13, when the chair 7 is deployed, the seat frame 72 is rotated in the opposite direction as the shaft pin P rides the long hole 720 so that the saddle 74 may be horizontally developed. Can be.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

1: main frame 2: auxiliary frame
3; Power unit 4; The control unit
5: driving wheel 6: driven wheel
7: chair 8: handbrake
12: folding operation portion 13: the shaft
14,14 ': first and second bushing portion 16: guide means
18: elastic body 19, P: shaft pin
35: battery pack 36: charger
38: motor controller 39: inclination sensor
71: cushion bar 72: chair frame
73: bottom 74: saddle
141: first bushing 142: second bushing
143: connecting rod 162: guide
164: guide roller P: shaft pin
341: first electric motor 342: second electric motor
391 upward tilt sensor 392 downward tilt sensor
R1: Acceleration setting variable resistor R2: Deceleration setting variable resistor
720: long

Claims (8)

A main frame (1) coupled to the driving wheel (5) at a lower portion thereof, perpendicular to the ground, and having a handle (16) formed at an upper end thereof;
An auxiliary frame (2) coupled to a hinge (g) parallel to the ground from one lower side of the main frame (1), and having a driven wheel (6) mounted at one end thereof;
A power unit (3) formed at a lower portion of the main frame (1) to provide electric power for driving the main wheel (5);
A control unit (4) formed at one side of the handle (16) to control driving and stopping of the power unit (3);
A folding manipulation part (12) for rotating the main frame (1) about the hinge (g) to fold horizontally with the auxiliary frame (2);
Folding electric walking assistance vehicle comprising a. The method of claim 1,
The folding manipulation unit 12
A shaft 13 penetrating the inner surface of the main frame 1 and coupled to the auxiliary frame 2;
First and second bushings (14,14 ') coupled to the outer circumferential surface of the shaft (13) and symmetrically coupled to both left and right sides thereof;
A shaft pin (19) formed to protrude on the outer ends of the first and second bushing parts (14, 14 ') and coupled to a pin coupling hole (h) formed on an inner surface of the main frame (1);
A through hole is formed so that the shaft pin 19 is inserted, and the bracket 15 is disposed close to the inner surface of the main frame (1);
First and second knobs 171 and 172 formed on one side of the first and second bushings 14 and 14 ′, respectively, to be gripped by a user;
An elastic body (18) coupled to the shaft (13) and coupled between the first and second bushing parts (14,14 ') to provide a pushing force;
Folding electric walking assistance vehicle comprising a. The method of claim 2,
The first and second bushings 14, 14 '
First and second bushings (141, 142) spaced at regular intervals and coupled to the shaft (13);
A connecting rod 143 connecting the first and second bushings 141 and 142;
Folding electric walking assistance vehicle comprising a. The method of claim 2,
Guide means 16 for guiding the sliding of the first and second bushings 14, 14 ',
The guide means 16,
A guide 162 formed of a square pipe formed in parallel with the shaft 13;
A guide roller 164 coupled to the outer circumference of the guide 162 and being in close contact with the outer surface of the connecting table 143 and rolling;
Folding electric walking assistance vehicle comprising a. The method of claim 1,
The main frame 1 is foldably coupled to include a chair (7) that the user can sit,
The chair 7
A chair frame 72 coupled to the main frame 1 by an axial pin P so as to have an "X" shape, and a cushion bar 71 formed on an upper end thereof;
A lower plate 73 coupled to a lower end of the chair frame 72 and horizontally mounted to the main frame 1;
Includes; saddle 74 attached to the upper surface of the lower plate 73,
The side of the chair frame 72 is a folding electric walkway, characterized in that the long frame 720 is formed so that the main frame (1) and the shaft pin (P) is guided. The method of claim 1,
The control unit 4 is
A control panel 40 attached to one side of the handle 16;
A plurality of operation mode switches formed on the control panel 40;
Folding electric walking assistance vehicle comprising a. The method according to claim 6,
The plurality of operation mode switches
An on / off button 41; A momentary acceleration button 42; Forward and backward control switches 43; A speed control switch 44; A foldable electric walking assistance vehicle comprising a headlight switch 45, a fog light switch 46, and a taillight switch 47. The method of claim 1,
Folding top of the main frame 1, characterized in that the cradle 10 is formed to mount the navigation or smart phone, characterized in that the folding electric walkway.

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