TWI481397B - Lower limb motor aids - Google Patents

Description

Lower limb exercise assist device

The present invention is a device for training physical activity, and more particularly to a lower limb exercise assisting device.

According to the statistics of the Department of Health, about 30,000 people suffer from a stroke every year in Taiwan. In addition, about 1,000 people suffer from lower limb paralysis or general paralysis every year due to car accidents, sports injuries and occupational injuries. Acute cerebrovascular disease (generally called stroke) and spinal lesions often cause paralysis of the lower extremities. After the lower extremity, the hip, knee and ankle joints often cause joint stiffness due to lack of passive joint movement. Muscle atrophy, and may further cause the patient to suffer from acne for a long time. Therefore, immediate and appropriate physical rehabilitation should be provided before the condition deteriorates.

However, today's rehabilitation workers lack manpower, most patients can not get adequate rehabilitation treatment, and manual rehabilitation is time-consuming and labor-intensive, not only can not get complete rehabilitation, the cost is also expensive, if you can design a rehabilitation machine to do automation Control program (motion speed, time control, etc.), patients can also use this rehabilitation equipment to do continuous rehabilitation in their homes or nursing homes, so that the patient's rehabilitation speed will be faster and can be restored in the shortest time. Its function.

As shown in the tenth figure, a conventional leg rehabilitation machine includes a base A, a cantilever B, a seat C, a swinging unit D and a pedal E. The cantilever B is fixed to one end of the base A. The pedal E is disposed at the end of the cantilever B. The seat C is fixed to the other end of the base A with respect to the cantilever B. The swinging unit D is longitudinally disposed with a swinging rod D1. The end of the cantilever B.

Although this leg rehabilitation machine can carry out leg activity training, it can only be placed at a fixed point because it is bulky, and it cannot be moved to other places. For the foot sufferers, it must be supported by others, which does not achieve real convenience. . In addition, this leg rehabilitation machine must be stepped on by people and is not suitable for patients with lower limbs.

In view of the above, an object of the present invention is to provide a lower limb exercise assisting device having a fixing mechanism that can be connected to a wheelchair and placed on the ground in front of the wheelchair, or can be placed on a bed to be placed in a wheelchair or lying down. Patients on the bed can be used without a wheelchair or getting out of bed.

Another object of the present invention is to provide a lower limb exercise assisting device having an electronic control unit that allows a user to select a machine to control the pedaling action or to step on the pedal by the user's own power.

According to the present invention, the lower limb exercise assisting device comprises a base, a pedal crank mechanism, a fixing mechanism and an electric control unit. The pedal mechanism is disposed on the base, and the fixing mechanism is pivotally connected to the base, and the electronic control unit is configured to drive the pedal crank mechanism. Since the device is small in size, it can be moved to any place at any time, for example, on the ground in front of the chair, on the bed, or connected to the wheelchair by the fixing mechanism, so that the patient lying on the bed and the patient in the wheelchair can not get out of bed and not in the wheelchair. Direct use, according to the user's own ability to choose the electronic control department to automatically control the pedaling action or autonomous pedaling, the former can passively train the activity of the foot joints (including the hips, knees and ankles), the latter Can do muscle strength training. The speed, time and direction of the pedaling can be adjusted at any time before or during pedaling.

In summary, the lower limb exercise assisting device of the present invention has the following advantages:

First, it can be used as a lower limb rehabilitation equipment, including rehabilitation of the ankle, knee and ankle.

Second, the angle, speed and time of rehabilitation can be freely set according to the patient's leg flexibility.

Third, can be used directly in hospital beds and wheelchairs.

Fourth, the pedal speed can be freely set with the flexibility of the rehabilitation person's foot. For example, when the rehabilitation is started, the foot is not flexible enough, so the rehabilitation person is adapted at a slower speed, and the speed can be increased after the foot is slowly and flexibly.

V. Active and passive rehabilitation can be done: passive, driven by the machine to make the pedaling action; active, similar to stepping on the bicycle, relying on the patient's own strength to step on the pedal to do rehabilitation work.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

Please refer to the first embodiment and the second figure, which are respectively a perspective view and an exploded view of a preferred embodiment of the lower limb exercise assisting device of the present invention. The utility model mainly comprises a base 1, a pedal crank mechanism 2, a fixing mechanism 3 and an electric control portion 4. The pedal mechanism 2 is disposed on the base 1 , and the fixing mechanism 3 is pivotally connected to the base 1 , and the electronic control unit 4 is configured to drive the pedal crank mechanism 2 . Further, in order to adapt the lower limb exercise assisting device of the present invention to users of different heights, the present invention further incorporates a lifting mechanism 5 below the base 1.

The shape of the base 1 is not limited, and the base of the present invention is generally inverted T-shaped, and the highest part of the base is the pedal crank mechanism setting portion 11 , and the two ends of the lower portion of the base are respectively a fixing mechanism setting portion 12 and An electronic control unit setting unit 13.

The pedal crank mechanism 2 mainly includes a motor 21, a gear set (hidden in the gear cover 22), a drive shaft 23 and two pedal cranks 24. The transmission shaft 23 passes through the driven wheel (hidden in the gear cover 22) of the gear set, and the transmission shaft 23 is mounted on the pedal crank mechanism setting portion 11. The two ends of the transmission shaft 23 are respectively sleeved. The crank 24, the motor 21 drives the longitudinal movement of the two pedal cranks 24 through the gear train, and the pedal crank 24 has a pedal 241 for the person to step on.

The electronic control unit 4 is disposed in the electronic control unit setting portion 13 near the position of the motor 21. The electronic control unit 4 includes at least a power source 41, a switch 42, a circuit 43 for controlling the motor, and an external hand-held controller 44. The operating interface of the hand-held controller 44 includes the time (motion time) during which the motor is running, such as a minimum of 10 minutes, a maximum of 90 minutes, and the rotational speed of the motor, such as 10 to 45 rpm and motor steering (forward or reverse). When the hand-held controller 44 is not used, it can be hung in the proper position of the base 1 so as not to affect the pedaling action. In addition to the automatic control of the machine, the user can also choose to trample on his own strength for strength training.

The fixing mechanism 3 is disposed in the fixing mechanism setting portion 12, and the function of the fixing mechanism 3 is to connect the lower limb motion assisting device to the seat, the wheelchair (shown later), and so on. The lower limbs can be pedaled on the chair. The fixing mechanism 3 includes a length adjusting structure 31 and an angle adjusting structure 32. The length adjusting structure 31 includes a sliding slot (a seat located in the fixing mechanism setting portion 12), a slider 311 and a fastening member 312 which is opened at a position opposite to the position of the electronic control portion 4. 1 , the slider 311 corresponds to the shape of the sliding slot. The side surface of the slider 311 defines a slot 311a. The slider 311 is slidably engaged with the sliding slot. The fastening component 312 extends transversely through the base 1 and the slot 311a. And screwing a nut (not shown) to the fastening member 312 inside the slot 311a, the rotating fastening member 312 can clamp the slider 311 and the base 1, and fix it after adjustment (refer to the third A and third B)) slider 311 position. The angle adjusting structure 32 includes a pivot 321 and a rod 322. One of the rods 322 is disposed on the slider 311 by the pivot 321 , and the rod 322 can be moved along with the slider 311 and can be pivoted. The shaft 321 adjusts the pitch angle of 90° to -90° for the rotation axis (refer to the fourth and fourth B drawings). A part of the rod 322 is an outer tube 322a. The rod 322 further includes two inner tubes 322b and two pushing members 322c. The outer tube 322a has two symmetric sliding holes 322a1 penetrating through one side surface of the outer tube. The inner tube 322b is inserted into the outer tube 322a and extends toward the two sides of the outer tube. The two pushing members 322c respectively pass through the two sliding holes 322a1 and further pass through the two inner tubes 322b respectively. The element 322c is biased toward both ends of the outer tube 322a, and the two pushing members 322c are moved from the proximal end of the two sliding holes 322a1 to the distal ends of the two sliding holes 322a1, thereby adjusting the inner tubes 322b protruding from the outer tube 322a. Length (refer to Figure 5A and Figure 5B). The free ends of the two inner tubes 322b are respectively provided with an elastic clamping member 322b1 which is symmetrically arranged by two elastic pieces.

Referring to FIG. 6A and FIG. 6B, the lifting mechanism 5 is a scissor lifting platform, and includes an upper surface 51 and a lower surface 52. The upper surface 51 and the lower surface 52 are respectively disposed on opposite sides. A set of symmetrical slide rails 53 and a scissor type link 54 are disposed between the two sets of slide rails 53. A screw 55 provided with a knob 551 passes through the first crossbar 541 and the second included in the scissor link 54. The crossbar 542 drives the screw 55 to compress the first crossbar 541 or the second crossbar 542 through the forward or reverse knob 551, causing the scissor link 54 to expand or compress, and driving the base 1 disposed on the upper deck 51 ( Refer to the first figure) to achieve the function of lifting. Wherein, the bottom of the lower deck 52 is provided with a wheel set 56, so that the whole lower limb motion assisting device can be moved and can be used anytime and anywhere.

The lower limb exercise assisting device of the present invention is applied in many ways, for example, as shown in FIG. The operation mode is that the lower limb exercise assisting device is placed on the ground in front of the wheelchair, the pivot 321 of the angle adjusting structure is first loosened, and the pitch angle of the mast 322 is adjusted according to the height of the wheelchair body member 6, and the two are pushed. The element 322c is unscrewed and pushed outward together with the inner tube 322b, so that the two elastic clamping members 322b1 can clamp the rods 6 on both sides of the wheelchair body, and then the two pushing members 322c are screwed to fix the length of the inner tube 322b. After the wheelchair and the lower limb exercise assisting device are connected, the knob 551 of the lifting mechanism is rotated (refer to FIG. 6A), and the height of the scissor-type connecting rod 54 is adjusted according to the height of the person riding, so that the person can smoothly step on the pedal. After the pedal, the fastening element 312 of the length adjustment structure is released, and the distance between the wheelchair body and the lower limb motion assisting device is extended by adjusting the position of the slider 311, which determines the joint of the foot (including the hip and the knee) And the degree of curvature of the ankle joint. Therefore, if it is to be used by people with poor foot mobility, the device can be used first, as shown in Figure 7B, the distance between the wheelchair body and the lower limb motion assisting device is first pulled. far, The pedaling movement is performed at a small step. When the joint activity is increased, as shown in FIG. 7A, the distance between the wheelchair body and the lower limb motion assisting device is brought closer, and the pedaling motion is performed at a larger pace. This method is suitable for long-term wheelchair users, no need to go to the wheelchair, and can carry out foot movement training in a wheelchair.

Another way of using is that, as shown in the eighth figure, the person sits on a chair of a proper height, and the lower limb exercise assisting device is placed on the ground in front of the person, and the lower limb exercise assisting device can be fixed by the brake of the wheel set 56. Therefore, the function of the fixing mechanism 3 is not used, so that the lever 322 of the angle adjusting structure can be adjusted downward to a folding state of -90°, and then the lifting mechanism 5 can be adjusted according to the height of the person so that the foot can smoothly perform the pedaling operation. This method is suitable for the general person with normal foot activity as the active pedaling exercise. However, the general family's ground is relatively slippery, and the lower limb exercise assisting device can also be positioned by connecting the fixing mechanism to the chair.

In another manner of use, as shown in the ninth figure, the lower limb exercise assisting device can be tilted on the bed surface, and the whole device can be positioned by the one part of the base 1 and the lifting mechanism bottom wheel set 56 against the bed surface. People on the bed can also perform pedaling exercises; this method is suitable for people who are sick in bed for a long time to train their feet. During the stepping of each of the above-mentioned use states, the speed, time, and stepping direction of the stepping can be selected at any time through the hand-held controller 44 (refer to the first figure).

The above is only a preferred embodiment for explaining the present invention, and is not intended to limit the invention in any way, so that any modifications or changes relating to the invention may be made in the spirit of the same invention. All should still be included in the scope of the intention of the present invention.

1. . . Pedestal

11. . . Foot crank mechanism setting section

12. . . Fixing mechanism setting department

13. . . Electric control department setting department

2. . . Foot crank mechanism

twenty one. . . motor

twenty two. . . Gear cover

twenty three. . . transmission shaft

twenty four. . . Foot crank

241. . . pedal

3. . . Fixing mechanism

31. . . Length adjustment structure

311. . . Slider

311a. . . Slot

312. . . Fastening element

32. . . Angle adjustment structure

321. . . Pivot

322. . . Rod

322a. . . Outer tube

322a1. . . Slide hole

322b. . . Inner tube

322b1. . . Elastic clamping element

322c. . . Push component

4. . . Electronic control department

41. . . power supply

42. . . switch

43. . . Circuit

44. . . Handheld controller

5. . . Lifting mechanism

51. . . Upper deck

52. . . Lower deck

53. . . Slide rail

54. . . Scissor linkage

541. . . First crossbar

542. . . Second crossbar

55. . . Screw

551. . . Knob

56. . . Round Group

6. . . Lever

A. . . Base

B. . . cantilever

C. . . Seat

D. . . Swing unit

D1. . . Swing rod

E. . . Stepper

The first figure is a perspective view of a preferred embodiment of the lower limb exercise assisting device of the present invention.

The second figure is an exploded view of a preferred embodiment of the lower limb exercise assisting device of the present invention.

The third A is a side view of the lower limb exercise assisting device of the present invention, and shows the state before the length adjustment structure is adjusted.

The third B is a side view of the lower limb exercise assisting device of the present invention, and shows the state after the length adjustment structure is adjusted.

The fourth A is a side view of the lower limb exercise assisting device of the present invention, and the angle adjustment structure is adjusted to the upward adjustment state.

The fourth B is a side view of the lower limb exercise assisting device of the present invention, and the angle adjustment structure is adjusted to the downward adjustment state.

The fifth A is a partial perspective view of the lower limb exercise assisting device of the present invention, and shows that the inner tube has not moved.

The fifth B is a partial perspective view of the lower limb exercise assisting device of the present invention, and shows the inner tube moving state.

The sixth picture A is a perspective view of the lifting mechanism, and the performance has not yet been raised.

The sixth figure B is a perspective view of the lifting mechanism and shows a rising state.

Fig. 7A is a view showing the use state of the lower limb exercise assisting device of the present invention in combination with a wheelchair, and showing that the user steps on at a large step.

The seventh B is a state in which the lower limb exercise assisting device of the present invention is combined with the use state of the wheelchair, and the user is stepped on at a small step.

The eighth figure shows the state in which a person sits on a chair using the lower limb exercise assisting device of the present invention.

The ninth figure shows the state in which a person is lying on a bed using the lower limb exercise assisting device of the present invention.

The tenth figure is a schematic diagram of an existing leg rehabilitation machine.

1. . . Pedestal

2. . . Foot crank mechanism

3. . . Fixing mechanism

31. . . Length adjustment structure

32. . . Angle adjustment structure

4. . . Electronic control department

41. . . power supply

42. . . switch

43. . . Circuit

44. . . Handheld controller

5. . . Lifting mechanism

Claims (9)

A lower limb exercise assisting device comprises: a base; a pedal crank mechanism disposed on the base; a fixing mechanism pivotally connected to the base and mateable with a wheelchair body, the fixing mechanism having a length The adjustment structure and the angle adjustment structure, wherein the angle adjustment structure comprises a pivot and a rod, and a part of the rod is disposed on the length adjustment structure by the pivot, so that the height of the wheelchair body can be Adjusting a pitch angle of the free end of the mast; an electronic control unit for driving the pedal crank mechanism. The lower limb exercise assisting device according to claim 1, further comprising a lifting mechanism disposed below the base. The lower limb motion assisting device according to claim 1, wherein the pedal crank mechanism comprises a motor, a gear set, a transmission shaft and two pedal cranks, and the motor is electrically connected to the electronic control unit. The motor drives the gear set, the drive shaft passes through the gear set, and the two pedal cranks are respectively disposed at two ends of the drive shaft. The lower limb motion assisting device according to claim 1, wherein the length adjusting structure comprises a sliding slot, a slider and a fastening component, the sliding slot being a part of the base, the slider Slidingly engaging the sliding slot, the fastening element passes through the base and abuts against the slider for fixing the adjusted position of the slider, wherein the pivoting of the angle adjusting structure Set on the slider. The lower limb exercise assisting device according to claim 4, wherein the The rack rod further includes an outer tube, two inner tubes and two pushing members, wherein the outer tube has two symmetric sliding holes penetrating through one side surface of the outer tube, and the two inner tubes are inserted inside the outer tube and respectively facing the Extending from both sides of the outer tube, the two pushing members respectively pass through the two sliding holes respectively, and further pass through the two inner tubes respectively, and the two inner tubes extend through the outer tube through the two pushing members length. The lower limb exercise assisting device according to claim 2, wherein the lifting mechanism is a scissor lifting platform. The lower limb exercise assisting device according to claim 1, wherein the electronic control unit comprises a hand-held controller. The lower limb motion assisting device according to claim 5, wherein the free ends of the inner tubes are respectively provided with an elastic clamping member. The lower limb exercise assisting device according to claim 8 , wherein the free end of the mast has a pitch angle of between −90 degrees and +90 degrees.