TWI424837B - Driving device for a wheelchair - Google Patents

Description

Wheelchair drive

The present invention relates to a wheelchair drive device that is easy to assemble and disassemble.

Wheelchairs are important vehicles for assisting people with reduced mobility. However, manual wheelchairs are extremely laborious and should not be used for long distances. Electric wheelchairs are bulky and expensive, and the burden on vulnerable families is heavy. Even if the power of the electric wheelchair is insufficient on the way and it is impossible to continue to travel with power, it is very dangerous for users who cannot push the wheelchair by themselves (especially for the disabled or the elderly).

Although there are power-disengaged wheelchair assist devices on the market, the components are numerous and the assembly is complicated. It takes a lot of time to assemble with one person alone, and it is impossible to know whether it has been assembled correctly or not. A situation that prevents smooth control.

The present invention proposes a detachable wheelchair driving device which has a small number of components and is easy to assemble, and can judge that the driving device has been assembled from the assembled sound. When it is usually only a small-scale activity, the wheelchair is a general manual wheelchair, and the burden of pushing the wheelchair is reduced. In the case of long-distance or long-term activities, the drive unit can be combined into a wheelchair, and it can be an electric wheelchair. It does not require others to assist from the side, so that the disabled can also play as usual, go out to work, purchase, etc. Life is self-sufficient.

An embodiment of the driving device according to the present invention includes a driving mechanism including a power source, a motor, a directional control member and a speed control member for respectively driving a left rear wheel and a right rear wheel of the wheelchair; a mechanism coupled to the drive mechanism; a direction speed control mechanism including a bracket, a direction sensing member, a speed sensing member, and a handle for the user to hold; wherein the engaging mechanism is fixed to one end of the bracket by a detaching member, and the user senses the directional speed control mechanism to make the directional sensing member and The speed sensing member respectively generates a direction sensing signal and a speed sensing signal respectively transmitted to the direction control member and the speed control member, and the rotation of the left rear wheel and the right rear wheel drives the wheelchair forward and direction Turning.

According to an embodiment of the driving device of the present invention, the detaching member can be fixed or detached between the engaging mechanism and the bracket.

An embodiment of a drive apparatus according to the present invention, wherein the speed sensing member comprises an accelerometer.

An embodiment of the driving device according to the present invention, wherein the direction sensing member is a gyroscope.

According to an embodiment of the driving device of the present invention, the handle is rotated by the user to cause the direction sensing member to sense a direction sensing value, and the speed sensing member is coupled to the handle, and the speed sense is rotated. The acceleration sensing value is generated by the measuring member, and the acceleration signal is sent to the speed control member.

An embodiment of the driving device according to the present invention includes a speed reducing member coupled to the speed sensing member for operation by the user to transmit a deceleration signal to the speed control member.

An embodiment of the driving device according to the present invention includes a display panel for displaying the current speed, the traveled distance, and the traveling direction of the wheelchair.

An embodiment of the drive device according to the present invention includes a balance wheel disposed below the bracket to prevent the wheelchair from tipping over.

An embodiment of the driving device according to the present invention includes an elongated bracket joined to the bracket so that the position of the handle can be matched to the user Increase in position.

Please refer to Fig. 1, which is a perspective view of an embodiment of a driving device for a wheelchair according to the present invention. The driving device includes a driving mechanism 100. The driving mechanism 100 includes a power source, a motor, a directional control member and a speed control member (all received in the driving mechanism 100), and is disposed at a left rear of a wheelchair (not shown). a wheel and a right rear wheel to drive the left rear wheel and the right rear wheel respectively to advance and turn; an engagement mechanism 200 is coupled to the driving mechanism 100; a direction speed control mechanism 300 includes a bracket 301, a sense of direction The measuring member (accommodated in the engaging mechanism 200), a speed sensing member (accommodated in the engaging mechanism 200), and a handle 302 are provided for the user to hold. The joint mechanism 200 is fixed to one end of the bracket 301 by a detachable member 201. Please refer to Fig. 2, which shows a side cross-sectional view of the joint mechanism and the end of the bracket. In the present embodiment, the front end of the bracket 301 has a clamp 3011 extending obliquely downward. When the front end of the bracket 301 is inserted into the attaching and detaching member 201, the clip 3011 is pressed by the side wall of the engaging mechanism 200 to be attached to the bracket 301 to advance. The detachable member 201 is a reset piece, and the side wall of the detachable member 201 has a through hole, so that the clip 3011 can be inserted into the through hole after being inserted into the positioning to prevent the bracket 301 from being shaken or the self-engaging mechanism 200 is loose. . And the clip 3011 will sound when inserted into the positioning, so that the user can determine that the card has actually been engaged. When the engaging mechanism 200 is to be disengaged from the bracket 301, the fixing member 201 is uplifted against the clamping member 3011, so that the clamping member 3011 is attached to the bracket 301, so that the bracket is backward. The engagement mechanism 200 is withdrawn. After the positioning of the bracket 301 is completed, a balance wheel 305 can be disposed under the bracket 301 to increase the stability of the wheelchair and prevent the wheelchair from falling over.

After the positive engagement, the direction sensing member and the direction sensing signal and the speed sensing signal sensed by the speed sensing member can be correctly transmitted to the direction control member and the speed control member. The direction sensing member can be a gyroscope. When the user controls the handle 302 to rotate counterclockwise or clockwise, the direction sensing member generates a left direction sensing signal or a right direction sensing signal. The left direction sensing signal and the right direction sensing signal are transmitted to the direction control member, and the wheelchair can be driven to turn left or right. The speed sensing member can further include an accelerometer, and the user rotates the handle 302 to generate the acceleration sensing value, and sends an acceleration signal to the speed control member to accelerate the traveling speed of the wheelchair.

For the sake of safety, a speed reducing member 303 (in this embodiment, a brake grip) may be further provided to be coupled to the speed sensing member. The user operates the speed reducer 303 (ie, grips the brake grip) and sends a deceleration signal to the speed control member to slow the travel speed of the wheelchair.

A display panel 304 is further disposed on the direction speed control mechanism 300 for displaying the current speed, the traveled distance, and the direction of travel of the wheelchair sensed by the direction sensing member and the speed sensing member.

Referring to Figure 3, a perspective view of another embodiment of a wheelchair drive device in accordance with the present invention. A balance wheel 305 can be placed under the bracket 301 to prevent the wheelchair from being unstable due to instability. The speed control member and the direction control member also control the speed and direction of the balance wheel 305 to enable the wheelchair to travel smoothly.

Referring to FIG. 4, considering the difference in the body of the user of the wheelchair, an extension bracket 306 coupled to the bracket 301 can be pulled up or lowered to increase or decrease the position of the handle 302 (the direction of the adjustment is as indicated by the arrow). ), more suitable to meet the needs of users. Familiar with the artist It can be seen that each of the speed reducer 303, the display panel 304, the balance wheel 305, and the extension bracket 306 can be used independently.

The driving device for a wheelchair according to the present invention has the following advantages: simple disassembly and assembly, easy maintenance and repair (each component can be disassembled for maintenance or replacement), compatible with various brands and wheelchairs of different sizes, and can be used together. The body's body adjusts the height of the stand and is controlled in a fairly simple and intuitive way to achieve a comfortable and natural feeling.

100‧‧‧ drive mechanism

200‧‧‧Joining mechanism

201‧‧‧Removable components

300‧‧‧ Directional speed control mechanism

301‧‧‧ bracket

3011‧‧‧Clamp firmware

302‧‧‧Handle

303‧‧‧Deceleration parts

304‧‧‧ display panel

305‧‧‧balance wheel

306‧‧‧Long bracket

Fig. 1 is a perspective view showing an embodiment of a driving device for a wheelchair according to the present invention.

Figure 2 is a partial side cross-sectional view of the joint mechanism and the bracket.

Fig. 3 is a perspective view showing an embodiment of a driving device for a wheelchair according to the present invention.

Fig. 4 is a perspective view showing another embodiment of a driving device for a wheelchair according to the present invention.

100‧‧‧ drive mechanism

200‧‧‧Joining mechanism

300‧‧‧ Directional speed control mechanism

301‧‧‧ bracket

302‧‧‧Handle

303‧‧‧Deceleration parts

304‧‧‧ display panel

306‧‧‧Long bracket

Claims (9)

A driving device for a wheelchair, comprising: a driving mechanism comprising a power source, a motor, a directional control member and a speed control member for respectively driving rotation of a left rear wheel and a right rear wheel of the wheelchair; an engaging mechanism Connected to the driving mechanism; the first direction speed control mechanism includes a bracket, a direction sensing member, a speed sensing member, and a handle for the user to hold; wherein the engaging mechanism is The detachable member is fixed to one end of the bracket, and the user controls the directional speed control mechanism to cause the directional sensing member and the speed sensing member to generate a direction sensing signal and a speed sensing signal respectively. The directional control member and the speed control member are transmitted, and the rotation of the left rear wheel and the right rear wheel is to drive the wheelchair forward and turn in a direction. The driving device for a wheelchair according to claim 1, wherein the detaching member fixes the bracket to the engaging mechanism, and the detaching member causes a card between the bracket and the engaging mechanism. If it is detached, it will be disconnected. The driving device for a wheelchair according to claim 1, wherein the speed sensing member comprises an accelerometer. The driving device for a wheelchair according to claim 1, wherein the direction sensing member is a gyroscope. The driving device for a wheelchair according to claim 1, wherein the handle is rotated by a user to cause the direction sensing member to sense a sensed value, and the speed sensing member is coupled to the handle, The speed sensing member is rotated to generate the acceleration sensing value, and an acceleration signal is sent to the speed control member. The driving device for a wheelchair according to claim 1, comprising: a speed reducing member coupled to the speed sensing member for the user to operate to send a deceleration signal to the speed control member. The driving device for a wheelchair according to claim 1, comprising: a display panel for displaying the current speed, the traveled distance and the traveling direction of the wheelchair. The driving device for a wheelchair according to claim 1, comprising: a balance wheel disposed under the bracket to prevent the wheelchair from falling over. The driving device for a wheelchair according to claim 1, comprising: an extension bracket coupled to the bracket to increase the position of the handle to match the position of the user.