KR102298864B1 - Smart wheelchair - Google Patents

Abstract

The present invention relates to a smart wheelchair, and a frame portion provided with a first frame and a second frame that are coupled to be spaced apart from each other by a predetermined distance in the longitudinal direction from the lower part of the wheelchair, and a plurality of portions coupled to both ends of the first frame and the second frame A rack driving unit and a plurality of racks provided with a plurality of motor units, a plurality of pinion driving units coupled in the same line with the motor unit, a column extending in the vertical direction, and a rack protruding in a direction opposite to the pinion driving unit at one point of the column It includes a plurality of wheel parts coupled to the lower part of the driving part, and the pinion driving part is provided with a length shaft adjustable in length in the vertical direction, a fixed shaft coupled to the lower part of the length shaft, and a pinion coupled at a point of the fixed shaft, When the plurality of pinions are respectively moved in the vertical direction along the plurality of racks, the seat of the wheelchair can be maintained horizontally even on an inclined surface having a predetermined angle.

Description

Smart wheelchair {SMART WHEELCHAIR}

The present invention relates to a smart wheelchair. In more detail, a frame portion provided with a first frame and a second frame coupled to be spaced apart from each other by a predetermined distance in the longitudinal direction from the lower part of the wheelchair, a plurality of motors coupled to both ends of the first frame and the second frame, a motor A plurality of pinion driving units coupled in the same line as the unit, a pillar body extending in the vertical direction, and a rack driving unit provided with a rack formed to protrude in a direction opposite to the pinion driving unit at one point of the pillar and a plurality of rack driving units coupled to the lower part and a plurality of wheel parts that become As each movement is possible in the vertical direction, the seat of the wheelchair can be maintained horizontally even on an inclined surface having a predetermined angle.

In general, a wheelchair is a chair with wheels on both sides so that a person with reduced mobility or poor lower body function can move while sitting, and it is possible to move to a desired place without the help of another person.

A general manual wheelchair is used as a means of transportation for many people with disabilities due to its simple structure, light weight, and foldable structure.

However, these conventional wheelchairs, which are commonly used, are easy to move on flat ground, but they cannot be driven in an inclined environment such as stairs, escalators, and ramps, and there is a problem that human casualties are caused by the overturning of the wheelchair. have.

In addition, when the occupant of the wheelchair chair sits down, the pelvis or thigh part directly contacts the cushion and outer skin of cotton or sponge, thereby generating a large amount of sweat in the humid summer season.

When a user sits on such a chair, the weight of the chair is placed on the chair and the ventilation passing through the cushion is blocked. There is a problem in that various eczema or skin diseases are caused by this occurrence.

Accordingly, there is a need to develop a wheelchair capable of solving the above problems.

KR 10-1225100 B1 KR 10-1694855 B1

An object of the present invention is to prevent skin diseases, including sweat bands due to sweat generated on the lower body of the disabled or the elderly who continuously ride and live in a wheelchair, and to secure the safety of a wheelchair seat on an inclined surface. To this end, a frame portion provided with a first frame and a second frame coupled to be spaced apart from each other by a predetermined distance in the longitudinal direction from the lower part of the wheelchair, a plurality of motor units coupled to both ends of the first frame and the second frame, and a motor unit A plurality of pinion driving units coupled in the same line as the rack driving unit and a plurality of rack driving units provided with a rack formed to protrude in a direction opposite to the pinion driving unit at one point of the pillar body and the pillar body extending in the vertical direction coupled to the lower part It includes a plurality of wheel parts, and the pinion driving part is provided with a length shaft adjustable in length in a vertical direction, a fixed shaft coupled to a lower portion of the length shaft, and a pinion coupled at a point of the fixed shaft, the pinion is vertical along the rack Each direction may be movable.

In order to achieve the above object, a smart wheelchair according to an embodiment of the present invention includes a frame portion provided with a first frame and a second frame that are coupled to be spaced apart from each other by a predetermined distance in the longitudinal direction from the lower part of the wheelchair, the first frame and A plurality of motor units coupled to both ends of the second frame, a plurality of pinion driving units coupled in the same line with the motor unit, a pillar body extending in the vertical direction, and the pinion driving unit facing the pinion driving unit at one point of the pillar body A rack driving unit provided as a rack protruding in the direction and a plurality of wheel units coupled to a lower portion of the plurality of the rack driving units, wherein the pinion driving unit includes a longitudinal shaft adjustable in length in the vertical direction, coupled to the lower portion of the longitudinal shaft It is provided with a fixed shaft that becomes a fixed shaft and a pinion coupled at one point of the fixed shaft, and as the pinion is movable in a vertical direction along the rack, respectively, the seat of the wheelchair can be maintained horizontally on an inclined surface having a predetermined angle. have.

In addition, according to the present invention, further comprising a link portion connecting the plurality of wheel portions in the longitudinal direction and a lighting portion for illuminating the light, wherein the lighting portion is automatically turned on when the light is operated on an inclined surface having a predetermined angle, and the link The part is provided with a first link and a second link coupled by a hinge, and when the wheel part is positioned adjacent to the wheel part by rotating the first link and the second link, it is easy to transport the wheelchair.

In addition, according to the present invention, the pinion driving unit is formed extending from one point of the fixed shaft, further comprising a moving shaft that is symmetrical with respect to an imaginary central axis extending in the vertical direction, the rack driving unit, the column body Further comprising a pair of insertion grooves that are recessed toward the inside from both sides of the insertion groove, the insertion groove is formed to have a longer length in the longitudinal direction toward the inside, so that the end of the moving shaft is inserted into the insertion groove In this case, the disengagement of the moving shaft is prevented.

According to the smart wheelchair of the present invention, there is an advantage in that the moving shaft is prevented from being separated from the insertion groove according to the shape of the insertion groove, the length in the longitudinal direction becomes longer toward the inside.

In addition, a magnetic material is formed in the insertion shaft and the insertion groove to increase the coupling force between the insertion shaft and the insertion groove.

In addition, when driving on a slope having a predetermined angle, a point that was difficult to recognize due to the slope can be visually recognized by the lighting unit that turns on the light, thereby preventing accidents in advance.

In addition, when operating on the ground forming a predetermined inclination angle, the seat position is always maintained perpendicular to the direction of gravity, so that the occupant does not lean forward or backward, and the ride comfort and safety are improved by operating while maintaining a safe posture. .

In addition, the guide rails are coupled to both sides of the wing according to another embodiment of the present invention, and the guide rail is engaged with the guide groove formed inside the lower seat of the wheelchair to enable sliding operation. can be prevented

In addition, the angle of the first wing part can be changed due to the hinge part according to another embodiment of the present invention, so that the occupant can apply wind to a desired position, thereby reducing the time to remove moisture and increasing energy efficiency. .

In addition, the control unit according to another embodiment of the present invention receives the current humidity and pressure from the moisture sensor and the pressure sensor, compares it with the reference humidity and the reference pressure stored in the storage, and controls the operation of the hydraulic unit and the blower through this. Due to the mechanism, automation is realized that can remove moisture without the separate operation of the occupant.

In addition, due to the configuration of the input unit, the communication unit and the servo motor unit according to another embodiment of the present invention, the convenience is increased by adjusting the angle of the first wing unit only with a specific signal applied to the input unit, thereby reducing the risk of an accident There is this.

1 is a front view according to an embodiment of the present invention.
2 is an enlarged perspective view of a rack driving unit according to an embodiment of the present invention.
3 is a cross-sectional view of a rack driving unit and a pinion driving unit according to an embodiment of the present invention.
Figure 4 (a) shows an example of use on a downhill road according to an embodiment of the present invention.
Figure 4 (b) shows an example of use on an uphill road according to an embodiment of the present invention.
5 is a plan view in which the moisture removal unit is coupled to the lower part of the wheelchair according to an embodiment of the present invention.
6 is a block diagram illustrating an operation process of a moisture removal unit according to an embodiment of the present invention.
7 is a flowchart illustrating an operation process of a moisture removal unit according to an embodiment of the present invention.
8 is a block diagram illustrating an operation process of a moisture removal unit according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

The terminology used herein is for the purpose of describing the embodiments, and thus is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprise” and/or “comprising” refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Definitions of terms used below are as follows. The "longitudinal direction" is the x-axis direction with reference to FIG. 1, the "width direction" is the y-axis direction with respect to FIG. 1, and the "vertical direction" is the z-axis direction with respect to FIG. 1 . In addition, "upper" means an upward direction in a vertical direction, and "lower" means a downward direction in a vertical direction.

Hereinafter, a smart wheelchair according to the present invention will be described with reference to the drawings.

The smart wheelchair according to the present invention includes a frame unit 100, a motor unit 200, a pinion driving unit 300, a rack driving unit 400, a wheel unit 500, a link unit 600, and a moisture removal unit 1000. include

First, with reference to FIG. 1 , the frame part 100 and the motor part 200 will be described.

The frame part 100 is a type of frame coupled under the seat on which the vicinity of the hip (lower body) of the passenger is seated, and includes a first frame 110 and a second frame 120 .

Accordingly, each of the first frame 110 and the second frame 120 is coupled to each other by being spaced apart from each other by a predetermined distance in the longitudinal direction under the seat on which the lower body of the occupant is seated.

The first frame 110 and the second frame 120 are provided to extend in the width direction in the form of a cylindrical metal shaft.

In addition, a plurality of motor units 200 are coupled at both ends of the first frame 110 and the second frame 120 .

The motor unit 200 is provided with a first motor 210 and a second motor 220 , including a known power machine that rotates by receiving electric power and generates a rotational force on a motor shaft.

Accordingly, the first motor 210 is coupled to both ends of the first frame 110 as a pair, and the second motor 220 is coupled to both ends of the second frame 120 as a pair. This is to drive the pair of first and second motors 210 and 220 to be coupled to a pinion driving unit 300 to be described later so that the seat on which the lower body of the occupant is seated is perpendicular to the direction of gravity.

Hereinafter, the pinion driving unit 300 and the rack driving unit 400 will be described with reference to FIGS. 2 and 3 .

The pinion driving unit 300 is vertically coupled from the bottom of the pair of first motors 210 and the second motor 220, in the present invention, the pinion driving unit 300 and the rack driving unit 400 are a plurality of, the same Since the shape and drive are applied, only the pinion driving unit 300 and the rack driving unit 400 coupled to either end of both ends of the first motor 210 will be described.

The pinion driving unit 300 is provided with a length shaft 310 , a fixed shaft 320 , a moving shaft 330 , and a pinion 340 .

The length shaft 310 is coupled to the shaft of the first motor 210, and includes a shaft shape, and is preferably provided as a length shaft a 311 and a length shaft b 312 so that the length can be adjusted in the vertical direction. do. As an example, a structure of a spline groove and an annular coupling groove may be used. Alternatively, a plurality of shafts having the same shaft are formed to extend, so that the inner and outer surfaces are formed with threads, so that the length can be adjusted by the rotational force of the motor. However, the present invention is not limited thereto, and includes any structure in which the length can be adjusted in the vertical direction.

The fixed shaft 320 is coupled at the bottom of the length shaft 310 .

In addition, the fixed shaft 320 may form a structure in which four shafts of a cylindrical shape are welded to be perpendicular to each other and sealed in a rectangular shape (see FIG. 2 ).

The pinion 340 is coupled to the lower portion of the fixed shaft 320 as above.

The combination of the fixed shaft 320 and the pinion 340 fixes the axis of the rotating machine at a certain position, and supports the weight of the shaft and the load applied to the shaft while rotating the shaft. And, the fixed shaft 320 coupled according to the rotation of the pinion 340 is possible to move in the vertical direction. Accordingly, the length shaft 310 also has a structure in which the length can be adjusted in the vertical direction.

The pinion 340 is a known gear device for converting a rotational motion into a linear motion, and is engaged with the rack 430 while rotating based on an imaginary axis in the width direction.

First, the rack driving unit 400 will be described.

The rack driving unit 400 is provided with a column body 410 , an insertion groove 420 and a rack 430 .

The column body 410 may be a rectangular parallelepiped frame extending in a vertical direction.

The rack 430 is formed on a surface facing the pinion 340 among the outer surfaces of the column body 410 . Accordingly, the pinion 340 is rotatable along the rack 430 extending in the vertical direction.

At this time, it is preferable that a pair of insertion grooves 420 are provided on both sides of the column body 410 in the width direction.

Referring to FIG. 3 , the insertion groove 420 has a rectangular cross-section from the outer surface of the column body 410 toward the inside and is cut twice in the longitudinal direction of the second cut rectangle rather than the longitudinal length of the first cut rectangle. is formed longer in length.

Therefore, when the moving shaft 330 is inserted into the insertion groove 420 and the pinion 340 is moved in the vertical direction along the rack 430 , the moving shaft 330 is inserted into the insertion groove 420 to be supported. can

Accordingly, there is an advantage in that the moving shaft 330 is prevented from being separated from the insertion groove 420 according to the shape of the insertion groove 420 whose length in the longitudinal direction becomes longer toward the inside.

The moving shaft 330 includes a pair of bent shafts 331 extending in the longitudinal direction from one point of the fixed shaft 320 and a pair of inserting shafts 332 extending from each of the bent shafts 331 . provided (see FIG. 2).

In addition, it is preferable that the magnetic body M is inserted into each of the insertion shaft 332 and the insertion groove 420 .

The magnetic material M includes a ferromagnetic material and is a material that strongly magnetizes in the inserted direction, and is formed in the insertion shaft 332 and the insertion groove 420 to increase the coupling force between the insertion shaft 332 and the insertion groove 420. has an increasing effect.

Therefore, in the structure that has to be moved in the vertical direction while bearing the weight of the person in the lower part of the wheelchair 10, it is possible to restrain the fast speed in the vertical direction by the weight of the person by giving an appropriate frictional force opposing the movement in the vertical direction. there are advantages to

Although not shown in the drawings, the above driving in the present invention may be driven by including an inclination sensor and a control unit. Therefore, whenever the smart wheelchair according to the present invention is operated on an inclined surface having a predetermined angle, the control unit drives the motor unit 200 according to the inclination value of the lower part of the wheelchair 10 of the inclination sensor to seat the lower part of the occupant is always maintained perpendicular to gravity so that you can ride while maintaining a safe posture.

Here, the inclination sensor may be provided as an acceleration sensor and a gyro sensor, and may measure the acceleration in the x-axis, y-axis, and z-axis directions of three axes, and calculate the angle inclined from the plane. can In addition, the control unit is a well-known control unit (control unit), receiving data from the acceleration sensor and the gyro sensor can control the motor unit 200 so that the lower part of the wheelchair 10 is always perpendicular to the gravity.

In addition, although not shown in the drawings, according to the present invention, it is possible to turn on the light when driving on an inclined surface or driving at night by further including a lighting unit.

The lighting unit includes a liquid crystal display (LCD), a thin film transistor liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display, and a three-dimensional display. (3D Display) and may include at least one of an E-ink display (E-ink Display), but is not limited thereto. The lighting unit is also driven by the control unit, and when it is operated on a slope with a predetermined angle, it is possible to visually recognize a point that was difficult to recognize due to the slope due to the lighting unit that turns on the light, thereby preventing accidents in advance. There are advantages.

The wheel unit 500 is coupled to the lower portion of the rack driving unit 400 in plurality and may be operated to change the position from the ground.

In addition, a plurality of link units 600 may be provided in a shape that connects each wheel unit 500 in the longitudinal direction.

The link unit 600 includes a structure of a known link device (Link motion) connecting two or more rod-shaped pins, and is shown as a link unit 600 having one joint in FIG. 1, but is not limited thereto. It can be designed so as not to deviate from the purpose by those of ordinary skill in the relevant field.

When the smart wheelchair according to the present invention is not operated due to the link unit 600 having the above structure, there is an advantage of improving the ease of transport by folding the wheel unit 500 to be close to each other.

Referring to FIG. 4 , driving on an inclined surface according to an embodiment of the present invention will be described.

The plurality of pinion driving units 300 and rack driving units 400 positioned to be spaced apart from each other by a predetermined interval in the longitudinal direction will be described as being divided into front and rear with reference to the occupant's legs shown in FIG. 4 .

First, as shown in Figure 4 (a), when driving on a downhill road, the front pinion driving unit 300 rises in the vertical direction along the front rack driving unit 400, and the rear pinion driving unit 300 is the rear It may be driven by descending in a vertical direction along the rack driving unit 400 .

Accordingly, it is possible to improve safety even in downhill driving by driving the lower seat of the wheelchair on which the lower body of the occupant is seated in a downhill road to maintain a horizontal level.

In addition, as shown in Fig. 4 (b), when driving on an uphill road, the front pinion driving unit 300 descends in the vertical direction along the front rack driving unit 400, and the rear pinion driving unit 300 is the rear rack It may be driven by ascending in a vertical direction along the driving unit 400 .

Therefore, by driving the lower seat of the wheelchair on which the lower body of the occupant is seated on the uphill road to maintain the horizontal level, it is possible to similarly improve the safety of the uphill road operation.

According to an embodiment of the present invention as described above, in the present invention, when operating on the ground (I) forming a predetermined inclination angle, the position of the seat is always maintained perpendicular from the direction of gravity so that the occupant does not lean forward or backward, and a safe posture is maintained. It has the advantage of improving both ride comfort and safety by driving while maintaining it.

In addition, the present invention may include a moisture removal unit 1000 in another embodiment.

Referring to FIG. 5 , the moisture removal unit 1000 will be described.

The moisture removal unit 1000 is a wheelchair lower part 1100, a wing part 1200, a hydraulic part 1300, a blower part 1400, a control part 1500, a moisture sensor 1600, a pressure sensor 1700 and a hinge part. (1800). In the present invention, the wheelchair lower part 1100 in another embodiment is the same as the wheelchair lower part 10 in one embodiment, and only the structure in which a plurality of hollow parts having openings are formed is different.

The lower part of the wheelchair 1100 has a predetermined thickness and is a portion where the buttocks of the occupant are in contact. A plurality of hollow parts having openings are formed in the lower part of the wheelchair 1100 , and as will be described later, the wing parts 1200 can be inserted and protruded into the hollow parts.

The wing portion 1200 is preferably inserted and protruded through an opening in the hollow formed in the lower part of the wheelchair 1100, and preferably has a panel shape having a predetermined thickness.

At this time, a plurality of wing parts 1200 are formed based on FIG. 5 , and can protrude in the left, right, and upward directions, and in the plurality of hollow parts formed in the lower part of each wheelchair 1100 , the protruding direction It is preferable that insertion is possible in the opposite direction of Here, left and right refer to the left and right sides in the longitudinal direction in FIG. 5 , and upper and lower sides refer to the upper and lower sides in the width direction in FIG. 5 .

Accordingly, the wing portion 1200 protrudes out of the hollow portion based on the hollow portion or is inserted into the hollow portion. Due to the structure of the plurality of wing parts 1200, when the occupant's buttocks are exposed to rainwater and get wet, or the left, right and upper parts of the occupant's buttocks wet with sweat can be dried, the range of removing moisture is expanded There are advantages.

In other words, the lower body of the wheelchair, which is mainly used by the disabled and the elderly with disabilities with lower body mobility, may get wet in the rain, and the lower part of the wheelchair in contact with the lower part of the wheelchair 1100 is sweaty due to the high temperature in summer. discomfort can be relieved.

The wing portion 1200 preferably includes a first wing portion 1201 and a second wing portion 1202 . In another embodiment of the present invention, the vicinity of one end of the wing unit 1200 is referred to as a first wing unit 1201 , and the vicinity of the other end of the wing unit 1200 is referred to as a second wing unit 1202 . With reference to FIG. 5 , one end is far from the controller 1500 , which will be described later, and the other end is closer to the controller 1500 . Each wing has the same shape.

The first wing portion 1201 and the second wing portion 1202 are respectively coupled to the hinge portion 1800 . The hinge part 1800 is formed in a direction perpendicular to the longitudinal direction of the wing part 1200, and is coupled with the first wing part 1201 and the second wing part 1202 at the same time, on both sides of the hinge part 1800. are combined

At this time, the second wing unit 1202 is coupled to a hydraulic unit 1300 to be described later and can only move left, right, or up and down, based on FIG. 5 , but the first wing unit 1201 is a hinge Rotational movement is possible through the branch 1800 . Accordingly, the first wing portion 1201 is capable of rotational movement in the front or rear direction with respect to the hinge portion 1800 .

Due to this structure, when the wing part 1200 protrudes to the outside of the wheelchair lower part 1100, the first wing part 1201 and the second wing part 1202 primarily protrude at the same time (refer to FIG. , in the right or upward direction), secondarily, the second wing unit 1202 is fixed, and the first wing unit 1201 is rotatable in the front or rear direction.

At this time, a stopping protrusion is formed at the end of the guide rail 1210 to be described later formed on the second wing part 1202 , and thus, the second wing part 1202 does not separate from the lower part of the wheelchair 1100 .

Accordingly, due to the above structure, the occupant can easily adjust the angles of the wing unit 1200 and the blower unit 1400 . The size of the hip or body size of the occupant varies. Therefore, if the wing portion 1200 and the blower 1400 in a fixed position, it is difficult to remove the moisture in the desired portion. However, according to another embodiment of the present invention, the distance of the blower unit 1400 can be adjusted by setting the position of the entire wing unit 1200 through a sliding operation, which will be described later, and secondarily, the hinge unit 1800 ), by adjusting the angle of the first wing unit 1201, it is possible to adjust the angle of the blower 1400.

5, the left and right wing parts 1200 can adjust the blowing distance and angle of the blower 1400 applied to both sides of the passenger's buttocks, and the upper wing part 1200 is By adjusting the blowing distance and angle of the blower 1400 applied to the vicinity of the tailbone of the passenger's buttocks, it is possible to selectively dry the desired part of the passenger. For this reason, the moisture removal time is shortened by removing moisture locally, and energy can be saved, so that economic efficiency is improved.

The hydraulic unit 1300 is coupled to the wing unit 1200 , and provides power to the sliding operation of the wing unit 1200 . The hydraulic unit 1300 is a known component that provides power through hydraulic pressure, and detailed description thereof will be omitted. The hydraulic unit 1300 is located inside the wheelchair lower part 1100 , and is coupled to the end of the second wing unit 1202 to apply force to the entire wing unit 1200 .

The hydraulic unit 1300 is connected to a control unit 1500 to be described later, and the control unit 1500 controls the operation of the hydraulic unit 1300 . In the present invention, the operation of the hydraulic unit 1300 means that the hydraulic unit 1300 pushes the wing unit 1200 to the outside of the wheelchair lower part 1100, and stopping the operation of the hydraulic unit 1300 means that the , means that the hydraulic unit 1300 pulls the wing unit 1200 into the lower part of the wheelchair 1100 to restore the original insertion state.

At this time, it is preferable that guide rails 1210 are formed on both sides of the wing part 1200 in the longitudinal direction of the wing part 1200 . In addition, it is preferable that a guide groove 1110 in which the guide rail 1210 is engaged is formed on the inner surface of the hollow part of the lower part of the wheelchair 1100 so that the guide rail 1210 can perform the sliding operation.

The guide rail 1210 slides along the guide groove 1110 , and the wing unit 1200 and the blower 1400 can slide along the guide groove 1110 .

Therefore, when the passenger does not use the blowing function of the blower 1400, the wing part 1200 and the blower 1400 are inserted along the guide groove 1110 in the lower part of the wheelchair 1100 to be embedded. . Due to this, it is not exposed to external shocks, so that the lower seat of the wheelchair according to another embodiment of the present invention has the advantage of extending the lifespan.

The blower 1400 is a device for generating wind, and may include, for example, a fan. Since the function of the blower 1400 is known, a detailed description thereof will be omitted.

The blower 1400 is connected to the control unit 1500 , and the operation is controlled by the control unit 1500 . In the present invention, the operation of the blower 1400 means that the fan of the blower 1400 rotates to generate wind, and stopping the operation of the blower 1400 means that the fan of the blower 1400 is operated. This means that no wind is generated because it is no longer spinning.

The controller 1500 controls the operations of the hydraulic unit 1300 and the blower 1400 , and although not shown in FIG. 5 , information about pressure and humidity is transmitted from the storage unit 1510 .

In addition, a moisture sensor 1600 and a pressure sensor 1700 are coupled to the center of the lower wheelchair 1100 . This will be described in detail with reference to FIG. 6 .

6 is a block diagram illustrating an operation process of a moisture removal unit according to another embodiment of the present invention, and FIG. 7 is related to a flowchart illustrating the operation process. Hereinafter, the operation process of the moisture removal unit according to another embodiment of the present invention and the relationship between each component will be described with reference to FIGS. 6 and 7 .

A pressure sensor 1700 is formed in the lower part of the wheelchair 1100, and the pressure sensor 1700 senses (or measures) the pressure applied to the pressure sensor 1700 by the occupant's buttocks (S101). At this time, if the pressure sensor 1700 does not sense the pressure, the moisture sensor 1600 does not work. For this reason, the blower 1400 is operated only when the passenger seats the buttocks on the lower seat of the wheelchair according to another embodiment of the present invention. Accordingly, it is possible to prevent unnecessary operation of the blower 1400, thereby saving energy.

At this time, the on/off of the pressure sensor 1700 may be controlled by a separate unit, and when there is no moisture in the occupant's buttocks, the pressure sensor 1700 may not sense the pressure through an off operation.

In addition, the pressure sensor 1700 transmits information about the current pressure applied to the lower seat of the wheelchair according to another embodiment of the present invention to the controller 1500 .

When pressure is sensed by the pressure sensor 1700, the moisture sensor 1600 senses (or measures) humidity (S102). The moisture sensor 1600 detects the humidity of the buttocks of the passenger in contact with the moisture sensor 1600 . If the pressure is sensed by the pressure sensor 1700, but the moisture sensor 1600 does not detect the humidity, it does not proceed to the next step, and the blower 1400 does not operate. Due to such a sequential control mechanism, there is an advantage that can prevent malfunction of the blower 1400 .

That is, if the moisture of the passenger's buttocks is removed by a separate environment such as natural wind while the passenger is driving, the moisture sensor 1600 controls the humidity even if the passenger is seating the buttocks on the lower seat of the wheelchair according to another embodiment of the present invention. Since it does not detect, the blower 1400 does not operate.

The control unit 1500 receives information about the pressure applied to the lower seat of the wheelchair according to another embodiment of the present invention from the pressure sensor 1700, and receives information about the humidity in the vicinity of the occupant's buttocks from the moisture sensor 1600 will be delivered

When the control unit 1500 receives information about the humidity in the vicinity of the passenger's buttocks from the moisture sensor 1600, the control unit 1500 operates the hydraulic unit 1300 (S103). As described above, when the hydraulic unit 1300 is operated, the wing unit 1200 protrudes to the outside of the lower wheelchair 1100 .

When the hydraulic unit 100 is operated and the wing unit 100 protrudes, the control unit 100 operates the blower unit 100 (S104). When the blower 1400 formed in the wing unit 100 is operated, the fan of the blower 1400 generates wind.

The occupant adjusts the angle of the first wing unit 1201 of the wing unit 1200 through the hinge unit 1800, so that the blower unit 1400 formed in the first wing unit 1201 is locally located at the desired position of the hip. You can let the wind blow.

At this time, although not shown in FIG. 5 , the control unit 1500 is preferably connected to the storage unit 1510 for storing the reference pressure and the reference humidity. First, the control unit 1500 receives information about the pressure currently applied from the pressure sensor 1700 , and compares it with the reference pressure stored in the storage unit 1510 ( S105 ).

When the current pressure is less than or equal to the reference pressure compared to the reference pressure stored in the storage unit 1510 , the controller 1500 stops the operation of the hydraulic unit 1300 and the blower 1400 ( S106 ).

At this time, the reference pressure is preferably greater than 0pa. This is because, if the reference pressure is 0pa, it is impossible to distinguish whether or not the hip of the passenger is pressing the lower seat of the wheelchair according to another embodiment of the present invention.

For example, when the passenger gets off the wheelchair for a while, the current pressure applied to the pressure sensor 1700 is 0 Pa, so that it is lower than the preset reference pressure. For this reason, the operation of the hydraulic unit 1300 is stopped, the hydraulic unit 1300 pulls the wing unit 1200 into the lower wheelchair 1100, and the operation of the blower 1400 is stopped and the blower is no longer (1400) does not generate wind.

That is, the convenience of being able to adjust whether or not the wind of the blower 1400 is generated by the passenger only by placing or releasing the hip on the lower seat of the wheelchair according to another embodiment of the present invention is increased.

In addition, when the current pressure exceeds the reference pressure, that is, when the passenger continues to lean on the lower seat of the wheelchair according to another embodiment of the present invention, the control unit 1500 controls the current humidity transmitted to the control unit 1500 . is compared with the reference humidity of the storage unit 1510 (S107).

Compared with the reference humidity stored in the storage unit 1510, when the current humidity is less than or equal to the reference humidity, the control unit 1500 stops the operation of the hydraulic unit 1300 and the blower 1400 (S108).

In this case, the reference humidity is preferably greater than 0%. This is because if the reference humidity is 0%, the controller 1500 cannot compare the humidity because it cannot be distinguished whether the humidity of the passenger's buttocks is present or not.

For example, when the moisture of the passenger's buttocks is completely removed by the continuous operation of the blower 1400 , the current humidity applied to the moisture sensor 1600 is 0%, so that it is lower than the preset reference humidity. For this reason, the operation of the hydraulic unit 1300 is stopped, the hydraulic unit 1300 pulls the wing unit 1200 into the lower wheelchair 1100, and the operation of the blower 1400 is stopped and the blower is no longer (1400) does not generate wind. That is, even if the occupant is seated on the lower seat of the wheelchair according to another embodiment of the present invention, the occupant may not generate the wind of the blower 1400 without a separate operation.

In order for the passenger to control the operation of the hydraulic unit 1300 and the blower 1400 while the passenger is driving, he/she has to apply a manipulation to the operating mechanism, so that nerves may be dispersed and an accident may occur.

However, according to another embodiment of the present invention, by comparing the reference pressure and the reference humidity stored in the storage unit 1510 with the current pressure and the current humidity, the control unit 1500 automatically determines whether the wind of the blower unit 1400 is generated. It has the advantage of being adjustable.

In addition, when the passenger does not seat the buttocks or the moisture in the buttocks is removed, the blower 1400 automatically prevents the wind from being generated, and the wing portion 1200 is inserted back into the wheelchair lower part 1100. There is an advantage of preventing unnecessary energy waste and protecting the lower seat of the wheelchair according to another embodiment of the present invention from external impact.

However, when the current humidity exceeds the reference humidity, since moisture exists on the passenger's buttocks, the blower 1400 is continuously operated.

4 is a block diagram illustrating an operation process of a headrest according to another embodiment of the present invention. Hereinafter, components and functions of the moisture removal unit 1000 according to another embodiment will be described with reference to FIG. 8 .

The moisture removal unit 1000 according to another embodiment of the present invention includes all the components of the moisture removal unit 1000 according to another embodiment, but the input unit 1520 , the communication unit 1521 , and the servo motor unit 1900 . ), it is preferable to further include a configuration of.

The servomotor unit 1900 connects the first wing unit 1201 and the second wing unit 1202 . In addition, it is located at the rear of the hinge unit 1800 and is connected to the hinge unit 1800 , and controls the rotation operation of the hinge unit 1800 . A servomotor is a motor that generates rotational force by converting an electrical control signal into torque. The servo motor unit 1900 is controlled by the control unit 1500 .

When the control unit 1500 generates a servo motor operation signal, the servo motor unit 1900 receives it and operates the servo motor unit 1900 . Also, when the control unit 1500 generates a servo motor operation stop signal, the servo motor unit 1900 receives it and stops the operation of the servo motor unit 1900 . In this case, the servomotor unit 1900 may include a servomotor body, a servomotor operation unit, a servomotor signal unit, and the like.

When the servo motor unit 1900 is operated, the first wing unit 1201 may rotate in the front or rear direction with reference to FIG. 5 around the hinge unit 1800 . That is, the hinge part 1800 serves as a guide for preventing the first wing part 1201 from being separated from the second wing part 1202 , and the servomotor part 1900 has the first wing part 201 rotated. It gives you the power to do it.

The input unit 1520 is separately located inside the lower seat of the wheelchair, and a specific signal may be input to the input unit 1520 . The communication unit 1521 receives the specific signal, and the communication unit 1521 transmits the specific signal to the control unit 1500 .

In this case, the specific signal is preferably a signal capable of adjusting the rotation angle of the servomotor unit 1900 . Accordingly, when the passenger inputs a specific signal of 'frontal 10 degrees', the servo motor 1900 rotates so that the first wing unit 1201 rotates by 10 degrees in the front direction with respect to the second wing unit 1202. do.

When the passenger inputs a specific signal to the input unit 1520 , the communication unit 1521 receives it and transmits it to the control unit 1500 , and the control unit 1500 controls the servo motor unit 1900 through a servo motor operation signal to provide a servo It enables the motor unit 1900 to operate. Due to this, when the wing part 1200 protrudes from the lower part of the wheelchair 1100, the first wing part 1201 can be rotated in the front or rear direction so that the first wing part 1201 is positioned at the desired angle of the occupant. have.

According to another embodiment of the present invention, in order for a passenger to change the angle of the first wing part 1201 while driving, the occupant must manually hold the first wing part 1201 and adjust the angle. Due to this, nerves may be dispersed while driving, and there may be a risk of an accident.

However, according to the moisture removal unit according to another embodiment of the present invention, the passenger may operate the servomotor unit 1900 only by inputting a specific signal to the input unit 1520 while driving the wheelchair. For this reason, instead of manually adjusting the angle of the first wing unit 1201 by adjusting the rotation angle of the servomotor unit 1900, it is possible to automatically adjust the angle by electric control, thereby increasing convenience. In addition, there is an advantage in that safety is maximized by reducing the risk of an accident.

The embodiments according to the present invention described above may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the computer-readable recording medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include hard disks, magnetic media such as floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, and magneto-optical media such as floppy disks. medium), and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. A hardware device may be converted into one or more software modules to perform processing in accordance with the present invention, and vice versa.

Although the preferred embodiment of the present invention has been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

10: the lower part of the wheelchair, 100: the frame part,
110: a first frame, 120: a second frame,
200: motor unit, 210: first motor,
220: second motor, 300: pinion driving unit,
310: length shaft, 311: length shaft a;
312: length shaft b, 320: fixed shaft,
330: moving shaft, 331: bending shaft,
332: insert shaft, 340: pinion,
400: rack drive unit, 410: column body,
420: insert groove, 430: rack,
500: wheel part, 600: link part,
610: link a, 620: link b,
700: coupling part, 1000: moisture removal unit,
1100: the lower part of the wheelchair, 1200: the wing part,
1300: hydraulic unit, 1400: blower unit,
1500: control unit, 1600: moisture sensor,
1700: pressure sensor, 1800: hinge part,
1900: sub-motor unit.

Claims (3)

bathchair;
a frame portion provided with a first frame and a second frame coupled to be spaced apart from each other by a predetermined distance in the longitudinal direction from the lower part of the wheelchair;
a plurality of motor units coupled to both ends of the first frame and the second frame;
a plurality of pinion driving units coupled to the motor unit in the same line;
a rack driving unit having a pillar body extending in a vertical direction and a rack protruding in a direction opposite to the pinion driving unit at one point of the pillar body; and
Containing; a plurality of wheel parts coupled to the lower portion of the plurality of rack driving units;
The pinion drive unit,
length shaft adjustable in length in the vertical direction;
a fixed shaft coupled to a lower portion of the length shaft; and
It is provided as a; pinion coupled at one point of the fixed shaft,
As the pinion is movable in a vertical direction along the rack, the seat of the wheelchair can be maintained horizontally on an inclined surface having a predetermined angle,
Further comprising; a moisture removal unit located at the lower part of the wheelchair;
The moisture removal unit,
Wings capable of being inserted into a plurality of hollow parts formed inside the lower part of the wheelchair;
a blower for applying wind to the vicinity of the tailbone of the occupant's buttocks;
Doedoe located at a point under the wheelchair, a moisture sensor for detecting the moisture of the hip of the occupant;
Doedoe located at a point under the wheelchair, a pressure sensor for detecting the pressure applied by the occupant's buttocks;
guide rails formed on both sides of the wing portion; and
Doedoe formed in the lower part of the wheelchair, a guide groove in which the guide rail is engaged; including,
The guide rail is
It is possible to protrude from the lower part of the wheelchair along the guide groove toward the outside of the wheelchair,
A stopping protrusion is formed at the end of the guide rail to prevent the wing portion from being separated from the lower part of the wheelchair,
The wing portion,
a first wing portion formed at one end of the wing portion;
a second wing portion formed at the other end of the wing portion;
a hinge part coupled between the first wing part and the second wing part; and
It further includes; a hydraulic part coupled to the second wing part,
The wing part is movable from the lower part of the wheelchair to the outside of the wheelchair along the guide groove, and the angle of the first wing part and the blower part is adjusted through the hinge part
smart wheelchair.
According to claim 1,
a link part connecting the plurality of wheel parts in the longitudinal direction; and
A lighting unit for illuminating the light; further including,
When the lighting unit is operated on an inclined surface having a predetermined angle, the light is automatically turned on,
The link unit is provided with a first link and a second link coupled by a hinge,
When the first link and the second link are rotated to position the wheel to be adjacent to each other, it is easy to transport the wheelchair.
smart wheelchair.
3. The method of claim 2,
The pinion drive unit,
Doedoe extending from one point of the fixed shaft,
Further comprising; a moving shaft symmetrical with respect to a virtual central axis extending in the vertical direction,
The rack drive unit,
A pair of insertion grooves formed by being depressed toward the inside from both sides of the column body;
The insertion groove is formed to have a longer length in the longitudinal direction toward the inside, so that when the end of the movable shaft is inserted into the insertion groove, the separation of the movable shaft is prevented.
smart wheelchair.

Images