JP2011152257A - Auxiliary driving device for wheelchair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary driving device for a wheelchair. <P>SOLUTION: The auxiliary driving device for the wheelchair includes a wired signal transmission structure, a sensor, a control circuit and a driving unit. The wired signal transmission structure is set in a hub, and the hub is set in a wheel of the wheelchair. The sensor is set in the wheel, and generates a detection signal to be transmitted to the wired signal transmission structure. The control circuit is connected to the wired signal transmission structure to receive the detection signal, and generates a control signal. The driving unit is connected to the control circuit to receive the control signal, and drives the hub based on the control signal to rotate the wheel. With this structure, the auxiliary driving device is simple-structured, transmits signals by a wired transmission system, hardly receives the interference of the external environment, and securely transmits the detection signal to the control circuit. As a result, the driving unit is accurately controlled to drive the wheel, and the cost can be reduced by the wired transmission system. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a kind of auxiliary drive device, and more particularly to a kind of auxiliary drive device for a wheelchair.

  Advances in medical technology have extended the life expectancy of mankind. However, it is clear that the function of each organ of the body ages as it gets older. Severe illness or aging can cause a person to lie down on the floor for an extended period of time. However, lying for a long time is not always a good resting system for patients. This is because lying down for a long time degenerates the body function, sometimes causes pressure ulcers, and has some effect on cardiopulmonary function, colonic peristalsis, or urinary system. Therefore, considering the inconvenience of the patient's behavior and ease of use, the elderly or those who are inconvenient to use often use a wheelchair. By using a wheelchair, a person with a disability can also achieve a request to move independently independently. For this reason, the convenience and safety of a wheelchair are very important. Currently, most wheelchairs are sufficiently convenient for user activities and include a controller for the user to control.

  There are many types of wheelchairs, but according to the power configuration, there are two types: manual and electric. In the manual wheelchair, the wheel rim is rotated by pushing the hand rim of the wheelchair with both hands of the user to achieve movement of the wheelchair. The electric wheelchair provides power necessary for traveling of the wheelchair using an electric motor, and the user can control the motor and control the traveling direction and traveling speed of the wheelchair using the controller. As a result, the electric wheelchair becomes a relatively easy movement assist tool for the user, but the advantages of exercising the muscles of the manual wheelchair are lost.

  Due to the above reasons, an auxiliary device has been developed to assist the user in driving the manual wheelchair so that the user can easily drive the manual wheelchair. The wheelchair of this type uses a force sensor to detect the wheelchair driving force of the user, generates a detection signal, and sends the detection signal to the control circuit by a wireless transmission method. A circuit drives a motor based on the detection signal to drive the wheel of the wheelchair to assist the user in driving the wheelchair.

  Known power assist devices can assist the user in driving the wheelchair, but such power assist devices transmit signals wirelessly, so they are susceptible to external interference in the signal transmission process, ensuring signal Therefore, when the user drives the wheelchair, the detection signal is accurately fed back to the control circuit and the motor cannot be driven. In addition, the structure of a wheelchair with a known auxiliary device is too complicated, and the manufacturing cost is high because a wireless transmission device is used.

  One of the objects of the present invention is to provide a kind of auxiliary drive device for a wheelchair, which transmits signals in a wired manner, so that the signals can be reliably transmitted without being interfered by the external environment in the process of signal transmission. It can be sent to the control circuit to accurately drive and rotate the wheel of the wheelchair to assist the user in driving the wheelchair.

  One of the objects of the present invention is to provide a kind of auxiliary drive device for a wheelchair, which uses a wired signal transmission, has a simple structure and can reduce production costs.

  The auxiliary drive device for a wheelchair of the present invention includes a wired signal transmission structure, a sensor, a control circuit, and a drive unit. The wired signal transmission structure is installed on a hub, and the hub is installed on a wheel of a wheelchair; the sensor is installed on the wheel; and a detection signal is generated and sent to the wired signal transmission structure; Connected to the wired signal transmission structure and receives the detection signal and generates a control signal, the drive unit is connected to the control circuit and receives the control signal, and drives and rotates the hub based on the control signal to rotate the wheel; As a result, the present invention has a simple structure, transmits signals in a wired manner, is less susceptible to interference from the outside environment, reliably sends a detection signal to the control circuit, accurately controls the drive unit, and drives the wheels. In addition, the cost can be reduced by a wired transmission system.

  The present invention provides a kind of auxiliary drive device for a wheelchair, which assists the user in driving the wheelchair, allows the user to easily drive the wheelchair, and provides the structure of the auxiliary drive device provided by the present invention. Is simple, and transmits signals in a wired manner, so that the manufacturing cost is low, and it is difficult to receive interference from the outside environment during the signal transmission process, so the detection signal is fed back reliably when the user drives the wheelchair. The wheelchair wheel can be rotated to assist the user in driving the wheelchair.

It is a structure display figure of the preferable Example of the auxiliary drive device of the wheelchair of this invention. 1 is an exploded view of a preferred embodiment of a wheelchair auxiliary drive device of the present invention. It is a structure display diagram of a preferred embodiment of a drive unit and a wired signal transmission structure of an auxiliary drive device of the present invention. It is a structure display figure of the preferred Example of the lower fixed board and lower case of the wired signal transmission structure of this invention. It is a structure display figure of the preferred Example of the upper fixed board and hub of the wired signal transmission structure of this invention.

  To obtain further understanding and recognition of the technical features of the present invention and the effects achieved, preferred embodiments will be described in detail below in combination with the drawings.

  1A and 1B are a structural display diagram and an exploded view of a preferred embodiment of an auxiliary drive device for a wheelchair according to the present invention. As shown in the drawing, the wheelchair auxiliary drive device of the present invention includes a wired signal transmission structure 10, a sensor 20, a control circuit 30, and a drive unit 40 (see FIG. 2A). The wired signal transmission structure 10 is installed on the hub 5 of the wheelchair 1, the hub 5 is installed on the wheel 3 of the wheelchair 1, and the lower case 7 (FIG. 2A) matches the hub 5 (FIG. 3). The sensor 20 is installed on the wheel 3, which detects a state in which the user drives the wheel 3, for example, a moving amount of the wheel 3 or a driving force of the user, generates a detection signal, and generates a plurality of first signals. The detection signal is sent to the wired signal transmission structure 10 via the transmission line 23. These first transmission lines 23 connect the sensor 20 and the wired signal transmission structure 10. The sensor 20 can be a movement sensor or a force sensor, but the sensor 20 of the present invention is not limited to these two types of forms, and may be other sensors.

  The control circuit 30 and the drive unit 40 are installed in the box 50, and the control circuit 30 is electrically connected to the wired signal transmission structure 10, thereby receiving a detection signal generated by the sensor 20, and controlling the control signal based on the detection signal. Is generated. The drive unit 40 is connected to the control circuit 30 and receives a control signal generated by the control circuit 30. The drive unit 40 drives and rotates the hub 5 based on the control signal, thereby rotating the wheel 3. A preferred embodiment of the drive unit 40 is a motor. When the user uses the wheelchair 1 and drives and rotates the wheel 3 of the wheelchair 1, the sensor 20 detects the state of the wheel 3, generates a detection signal, and sends the detection signal via the wired signal transmission structure 10. To the control circuit 30. When the control circuit 30 receives the detection signal, the control circuit 30 generates a control signal based on the detection signal, and transmits the control signal to the drive unit 40 to control the drive unit 40, thereby causing the drive unit 40 to drive the hub 5, and thereby the wheels. 3 is driven and rotated to move the wheelchair 1. In this way, the driving force of the user's wheelchair 1 is reduced, and the user is assisted in driving the wheelchair 1.

  See FIG. 2A. This is a structure display diagram of a preferred embodiment of the drive unit and the wired signal transmission structure of the auxiliary drive device of the present invention. The wired signal transmission structure 10 of the present invention is installed on the hub 5 of the wheelchair 1 (see FIG. 1A), and the hub 5 (see FIG. 3) and the lower case 7 match each other. As shown in FIGS. 2A and 2B, the wired signal transmission structure 10 includes a plurality of lower fixing plates 12 and a plurality of rolling means 14, and these lower fixing plates 12 are installed in the lower case 7 and these rolling means. 14 is installed on the lower fixed platen 12. A preferred embodiment of the rolling means 14 is a rotating sphere or a rotating column.

  Please refer to FIG. The wired signal transmission structure 10 of the present invention further includes a plurality of upper fixing plates 16, which are installed on the hub 5, and these upper fixing plates 16 correspond to these lower fixing plates 12 of the lower case 7. (See FIG. 2A). When the lower case 7 is assembled to the hub 5, the rolling means 14 are installed between the upper fixed plate 16 and the lower fixed plate 12. The hub 5 is provided with a sleeve 51, that is, the sleeve 51 is installed in the hub 5, and the drive unit 40 (see FIG. 2A) is passed through the sleeve 51, and the wheel 5 of the wheelchair 1 is driven by driving the hub 5. Rotate.

  Please refer to FIG. 2A again. The control circuit 30 and the drive unit 40 are installed in the box 50. The drive unit 40 includes a transmission shaft 45, and the transmission shaft 45 passes through the perforation 71 of the lower case 7 and penetrates the sleeve 51 of the hub 5. The drive unit 40 drives and rotates the transmission shaft 45, thereby driving and rotating the hub 5 to rotate the wheel 3 of the wheelchair 1. The control circuit 30 is connected to the drive unit 40 and controls the operation of the drive unit 40. The present invention further includes a battery 60 that is connected to the control circuit 30 to provide power to the control circuit 30 and to transmit power to the drive unit 40 via the control circuit 30. A preferred embodiment of the battery 60 is a secondary battery. In addition, the present invention further includes a fixing means 70, which is installed in the box 50 and fixed to the frame 2 of the wheelchair 1 (see FIG. 1B), whereby the box 50 is attached to the frame 2. Fix it. The fixing means 70 has a concave groove 75, and is combined with the frame 2 by the concave groove 75.

  The materials of the lower fixed plate 12, the rolling means 14 and the upper fixed plate 16 of the wired signal transmission structure 10 of the present invention are conductive materials, for example, metal materials. The sensor 20 transmits the detection signal to the upper fixed platen 16 of the wired signal transmission structure 10 through the first transmission line 23, and the first transmission lines 23 are connected to the upper fixed platen 16, respectively. These upper fixed plates 16 transmit detection signals to these lower fixed plates 12 via these rolling means 14. These lower fixed plates 12 are connected to a plurality of second transmission lines 13 (see FIG. 2A), and these second transmission lines 13 are connected to a control circuit 30 and transmit detection signals to the control circuit 30. The number of the lower fixed platen 12 and the upper fixed platen 16 is the same as the number of the first transmission lines 23 connected to the sensor 20. In this embodiment, as shown in FIG. 3, four first transmission lines 23 are connected to the sensor 20, so this embodiment includes four upper fixing plates 16 (see FIG. 3) and four lower fixing plates. 12 (see FIG. 2B). In addition, when the sensors 20 are added to the wheels 3, it is not necessary to increase the quantity of the lower fixed platen 12 and the upper fixed platen 16, and the same transmission line connected to these sensors 20 is the same upper fixed platen. 16 and the lower fixed platen 12 are shared. For example, if the colors of the four first transmission lines 23 connected to the sensor 20 are red, green, black, and white, respectively, the first transmission lines 23 of the same color are fixed to the same upper fixing plate 16 and the lower fixing plate 16. The board 12 is shared. Although the first transmission line 23 in the above-described embodiment is four, this is only one embodiment of the present invention, and the first transmission line 23 of the present invention is not limited to four. Different numbers may be used as necessary.

  In the present invention, the detection signal of the sensor 20 is transmitted to the control circuit 30 by the wired signal transmission structure 10, and thus the detection signal is transmitted to the control circuit 30 by the wired system, and is not subject to interference of the external environment in the process of the detection signal transmission. In this manner, the detection signal is reliably transmitted to the control circuit 30 to accurately control and rotate the wheel 3 of the wheelchair 1 to assist the user in driving the wheelchair 1. In addition, the manufacturing cost can be reduced by transmitting the detection signal by a wired system.

  Please refer to FIG. 2B again. The wired signal transmission structure 10 of the present invention further includes a lower insulating means 15, which is installed between the lower fixing plates 12 and electrically isolates the lower fixing plates 12 from each other. I try not to touch it. Please refer to FIG. 3 again. An upper insulating means 17 is installed between the upper fixed plates 16 to isolate the upper fixed plates 16 from electrical contact with each other.

  Collectively, the wheelchair auxiliary drive device of the present invention includes a wired signal transmission structure, a sensor, a control circuit, and a drive unit. A sensor is installed on the wheel to detect the wheel driving state of the user, and generates a detection signal and sends it to the wired signal transmission structure. The control circuit is connected to the wired signal transmission structure and receives the detection signal. Generate a control signal, the drive unit is connected to the control circuit and receives the control signal, and drives and rotates the hub based on the control signal, thereby rotating the wheel. As a result, the present invention transmits a signal by a wired system, makes it less susceptible to interference from the outside environment in the process of transmitting the signal to the control circuit, reliably sends a detection signal to the control circuit, and accurately controls the drive unit to control the wheel. , Thereby assisting the user in driving the wheelchair. In addition, the drive assist device of the present invention has a simple structure and achieves the object of reducing the manufacturing cost by using signal transmission by a wired system.

  Therefore, the present invention has novelty, inventive step and industrial utility value, and has patent requirements. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, the shape, structure, features, and spirit described in the claims of the present invention are not limited. Any equivalent changes and modifications that may be made based on the present invention are intended to be included within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Wheelchair 2 Frame 3 Wheel 5 Hub 51 Sleeve 7 Lower case 71 Perforation 10 Wired signal transmission structure 12 Lower fixing plate 14 Rolling means 13 Second transmission line 15 Lower insulating means 16 Upper fixing plate 17 Upper insulating means 20 Sensor 23 First transmission Line 30 Control circuit 40 Drive unit 45 Transmission shaft 50 Box body 60 Battery 70 Fixing means 75 Concave groove

Claims (13)

Wired signal transmission structure installed in wheelchair wheel hub,
A sensor installed on the wheel to generate a detection signal and send it to the wired signal transmission structure;
A control circuit connected to the wired signal transmission structure and receiving the detection signal and generating a control signal;
A drive unit connected to the control circuit and receiving the control signal, and driving and rotating the hub based on the control signal to rotate the wheel;
A wheelchair auxiliary drive device characterized by comprising: The auxiliary drive device for a wheelchair according to claim 1, wherein the wired signal transmission structure further includes:
A plurality of upper fixed plates installed on the hub;
A plurality of lower fixed plates installed in a lower case matching the hub;
At least one upper insulating means installed between the upper fixed plates and separating the upper fixed plates from each other;
At least one lower insulating means installed between the lower fixed plates and separating the lower fixed plates from each other;
A plurality of rolling means installed between the upper fixed plate and the lower fixed plate;
A wheelchair auxiliary drive device comprising:   The auxiliary driving device for a wheelchair according to claim 2, wherein the rolling means is a plurality of rotating balls or rotating columns.   3. The wheelchair auxiliary drive device according to claim 2, wherein the upper fixed plate, the lower fixed plate, and the rolling means are made of a conductive material. The auxiliary drive device for a wheelchair according to claim 2,
A plurality of first transmission lines for connecting the sensor and the upper fixed plate to transmit the detection signal of the sensor to the upper fixed plate and for transmitting the detection signal to the lower fixed plate through the rolling means. When,
A plurality of second transmission lines for connecting the lower fixed plate and the control circuit, and transmitting the detection signal to the control circuit;
An auxiliary drive device for a wheelchair, further comprising:   The wheelchair auxiliary drive device according to claim 1, wherein the sensor is a movement sensor.   The auxiliary drive device for a wheelchair according to claim 1, wherein the sleeve is installed in the hub, the drive unit is passed through, and the drive unit rotates the wheel by driving and rotating the hub. An auxiliary drive device for a wheelchair, further comprising the sleeve.   The auxiliary drive device for a wheelchair according to claim 7, wherein the drive unit includes a transmission shaft, and the transmission shaft passes through the sleeve and drives and rotates the hub to rotate the wheel. A wheelchair auxiliary drive.   The auxiliary drive device for a wheelchair according to claim 8, wherein the drive unit is a motor. In the wheelchair auxiliary drive device according to claim 1,
A plurality of first transmission lines connecting the sensor and the wired signal transmission structure, and transmitting the detection signal of the sensor to the wired signal transmission structure;
A plurality of second transmission lines connecting the wired signal transmission structure and the control circuit and transmitting the detection signal to the control circuit;
An auxiliary drive device for a wheelchair, further comprising:   2. The wheelchair auxiliary drive apparatus according to claim 1, further comprising a battery connected to the control circuit and transmitting power to the control circuit.   The auxiliary drive device for a wheelchair according to claim 11, wherein the battery is a secondary battery.   2. The wheelchair auxiliary drive device according to claim 1, further comprising a fixing means for installing a box housing the drive unit and the control circuit on a frame of the wheelchair. .

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