TWI434678B - Multi-functional wheelchair - Google Patents

Description

Multi-functional wheelchair

The invention relates to a multifunctional wheelchair, in particular to a function of lifting and tilting, which allows the user to sit or lie in various ways, and is also designed to have functions such as toilet and shampoo.

Although the conventional wheelchair has multiple functions of lifting and digging, the mechanism is complicated and cannot be designed to have a toilet function. For example, the structure of the recliner wheelchair of the Republic of China Patent No. M311414 is to use a lead screw to rotate the front and back of the wheelchair to control the lifting of the wheelchair, which cannot be moved to the top of the toilet for the patient to go to the toilet. The main purpose is to form an inclined surface after opening the upper cover of the container provided under the wheelchair, and open the movable door on the seat cushion. However, in the patent case, a toilet is attached to the wheelchair, the toilet is not easy to store, the helium is easily leaked, and the load is increased.

In view of this, the inventors have intensively studied and developed the results of the present invention. The structure of the present invention is simplified and can be designed to have the function of a toilet. It is also possible to design a configuration having a convenient shampoo.

A first object of the present invention is to provide a multifunctional wheelchair that has both functions of stable lifting and toilet use. The technical means for achieving the object of the present invention include a chassis, a frame, two lifting actuators and two control mechanisms. The lift actuation mechanism includes a linear telescopic actuator and two corresponding toggle link sets. The two ends of each toggle link group are respectively pivotally connected to the chassis and the frame, and the two ends of the linear telescopic actuator are respectively pivotally connected to the elbow joints of the two toggle link sets. The control mechanism includes a guide rail, a slider and a positioning seat. The rail is fixed to the chassis. The slider is fitted to the rail to move along the rail. The positioning seat is connected to the slider. Linear telescopic actuator crossing Positioning seat.

A second object of the present invention is to provide a multifunctional wheelchair that has both functions of stable lifting, tilt adjustment, convenient toilet use, rest and shampooing. The technical means for achieving the object of the present invention include a chassis, a frame, two lifting actuators and two control mechanisms. The lift actuation mechanism includes a linear telescopic actuator and two corresponding toggle link sets. The two ends of each toggle link group are respectively pivotally connected to the chassis and the frame, and the two ends of the linear telescopic actuator are respectively pivotally connected to the elbow joints of the two toggle link sets. The control mechanism includes a guide rail, a slider and a positioning seat. The rail is fixed to the chassis. The slider is fitted to the rail to move along the rail. The positioning seat is connected to the slider. A linear telescoping actuator traverses the locating seat. The positioning seat is provided with a pivot, a trigger, a nut and a spacer. The positioning seat locks the linear telescopic actuator, and the linear telescopic actuator is extended at one end, and the angle of rotation and movement are adjusted to adjust the inclination of the frame relative to the chassis.

壹. First embodiment of the present invention

Referring to FIGS. 1 to 5, in a first embodiment of the present invention, a multifunctional wheelchair system includes a chassis 10, a frame 20, two lifting actuators 30, and two control mechanisms 40. The front frame 11 and the rear wheel 12 are provided on the frame 10. In the example of the figure, the front end of the frame 10 is provided with two front wheels 11, the two front wheels 11 are respectively located at two sides of the front end thereof, the rear end of the frame 10 is provided with two rear wheels 12, and the two rear wheels 12 are respectively located at the rear ends thereof. side. The seat frame 20 is provided with a seat cushion 21 and a bracket 22. The seat cushion 21 is located at the top of the frame 20, and has an armrest 23 on both sides thereof, and a bracket 22 is arranged at the rear end of the frame 20. Each of the lifting and actuating mechanisms 30 includes a linear telescopic actuator 31, two corresponding toggle link sets 32/33, and two ends of each of the toggle link sets 32/33 are pivotally connected to the chassis 10 and the seats, respectively. The frame 20 and the two ends of the linear telescopic actuator 31 are respectively pivotally connected to the elbow joints 320/330 of the two toggle link sets 32/33.

The control mechanism 40 includes a guide rail 41, a slider 42 and a positioning seat 43. The guide rails 41 are vertically fixed to the chassis 20 in a longitudinal direction, wherein the structural strength of the guide rails 41 fixed to the chassis 20 is increased. In the implementation of the present invention, a frame 45 is fixed on the chassis 20, the bottom end of the rail 41 is fixed to the chassis 20, and the top end is fixed on the frame 45. The guide rail 41 is provided with a longitudinally extending concave long guide groove 410 on one side thereof, and the bottom of the guide groove 410 is provided with a long opening 411 which is longitudinally extended and has a reduced width and transversely penetrates the guide rail 41. A guide post 24 is provided at a central portion of the side of the frame 20, and the guide post 24 is disposed in the long slot 411 so that the center of the mount 20 can only move up and down along the long slot 411 and cannot be opposite to the chassis 20. The front and back ends move. The slider 42 is embedded in the long guide groove 410 of the guide rail 41 so that the slider 42 can move in the longitudinal direction of the guide rail 41. The slider 42 is provided with a first protrusion 420 and a second protrusion 421 respectively on the upper and lower sides, and the slider 42 is provided with a first through hole 422 and a second through hole 423 extending through the first hole. The second through hole 423 extends through the second protrusion 421 . The positioning seat 43 has a C-shaped annular shape and has a set of holes 430 in the center. Each of the two sides of the opening of the sleeve hole 430 is provided with a lug 431/432. The two lugs 431/432 are opposite to each other and are traversed by a shaft hole 433. A bolt hole 434 is defined in the positioning seat 43 below the shaft hole 433. The sleeve hole 430 of the positioning seat 43 is traversed by the linear telescopic actuator 31. The positioning seat 43 abuts against the side of the slider 42 . The shaft hole 433 is aligned with the first through hole 422 and is respectively disposed with a pivot 47 . One end of the pivot 47 passes through the lug 431 and the nut 48 is screwed. The other end of the pivot shaft 47 traverses the long slot 411 and passes through a spacer 49 to fix a pivot post 50. The pivot post 50 is rotatably coupled to the pivot portion 52 at one end of a trigger 51. The circular surface of the pivot portion 52 is cam-shaped with respect to the axial center of the pivot post 50, such that one side thereof is a high-order surface 520, and the other side of the high-order surface 520 is a low-order surface 521 (the high-order surface 520 is low). The step 521 is offset from the axis of the pivot post). The long guide groove 410 is further traversed by a circular tube 53 which passes through the long opening groove 411. An annular locking portion 530 protrudes from the outer surface of one end of the circular tube 53, and an outer thread 531 is provided at the other end. The second through hole 423 of the slider 42 is provided with an internal thread 424. The middle section of the round tube 53 The longer the slot 411 is, the locking portion 530 abuts against the guide rail 41, and the outer thread 531 is screwed with the inner thread 424 of the second through hole 423 of the slider 42. A bolt 54 is disposed in the circular tube 53. The bolt 54 has a head 540 at one end and a second outer screw 541 at the other end. The second outer screw 541 is screwed to the bolt hole 434 of the positioning seat 43.

Furthermore, in order to cooperate with the present invention to have a toilet function, the present invention is provided with an opening 25 in the center of the seat cushion 21, and the opening 25 is covered with a cover plate 26 which is flush with the top surface of the seat cushion 21. When the patient wants to go to the toilet, the cover 26 is opened, the frame 20 is raised, the wheelchair is moved, and the seat cushion 21 and the opening 25 are located above the toilet, and the patient can be used as a toilet.

贰. Second embodiment of the present invention

Referring to Figures 1, 2, 6, and 7, in a second embodiment of the present invention, the multifunctional wheelchair system includes a chassis 10, a frame 20, two lifting and lowering actuators 30, and two control mechanisms 40. The front frame 11 and the rear wheel 12 are provided on the frame 10. In the example of the figure, the front end of the frame 10 is provided with two front wheels 11, the two front wheels 11 are respectively located at two sides of the front end thereof, the rear end of the frame 10 is provided with two rear wheels 12, and the two rear wheels 12 are respectively located at the rear ends thereof. side. The seat frame 20 is provided with a seat cushion 21 and a bracket 22. The seat cushion 21 is located at the top of the frame 20, and has an armrest 23 on both sides thereof, and a bracket 22 is arranged at the rear end of the frame 20. Each of the lifting and actuating mechanisms 30 includes a linear telescopic actuator 31, two corresponding toggle link sets 32/33, and two ends of each of the toggle link sets 32/33 are pivotally connected to the chassis 10 and the seats, respectively. The frame 20 and the two ends of the linear telescopic actuator 31 are respectively pivotally connected to the elbow joints 320/330 of the two toggle link sets 32/33.

The control mechanism 40 includes a guide rail 41, a slider 42 and a positioning seat 43. The guide rails 41 are vertically fixed to the chassis 20 in a longitudinal direction, wherein the structural strength of the guide rails 41 fixed to the chassis 20 is increased. In the implementation of the present invention, a frame 45 is fixed on the chassis 20, the bottom end of the rail 41 is fixed to the chassis 20, and the top end is fixed on the frame 45. The guide rail 41 is provided with a longitudinally extending concave long guiding groove 410 on one side, and the bottom of the guiding groove 410 is longitudinally extended and the width is reduced. And extending through the long slot 411 of the guide rail 41 in the lateral direction. A guide post 24 is provided at a central portion of the side of the frame 20, and the guide post 24 is disposed in the long slot 411 so that the center of the mount 20 can only move up and down along the long slot 411 and cannot be opposite to the chassis 20. The front and back ends move. The slider 42 is embedded in the long guide groove 410 of the guide rail 41 so that the slider 42 can move in the longitudinal direction of the guide rail 41. The slider 42 is provided with a first protrusion 420 and a second protrusion 421 respectively on the upper and lower sides, and the slider 42 is provided with a first through hole 422 and a second through hole 423 extending through the first hole. The second through hole 423 extends through the second protrusion 421 . The positioning seat 43 has a C-shaped annular shape and has a set of holes 430 in the center. Each of the two sides of the opening of the sleeve hole 430 is provided with a lug 431/432. The two lugs 431/432 are opposite to each other and are traversed by a shaft hole 433. A bolt hole 434 is defined in the positioning seat 43 below the shaft hole 433. The sleeve hole 430 of the positioning seat 43 is traversed by the linear telescopic actuator 31. The positioning seat 43 abuts against the side of the slider 42 . The shaft hole 433 is aligned with the first through hole 422 and is respectively disposed with a pivot 47 . One end of the pivot 47 passes through the lug 431 and the nut 48 is screwed. The other end of the pivot shaft 47 traverses the long slot 411 and passes through a spacer 49 to fix a pivot post 50. The pivot post 50 is rotatably coupled to the pivot portion 52 at one end of a trigger 51. The circular surface of the pivot portion 52 is cam-shaped with respect to the axial center of the pivot post 50, such that one side thereof is a high-order surface 520, and the other side of the high-order surface 520 is a low-order surface 521. The long guide channel 410 is further traversed by a circular tube 53. An annular locking portion 530 protrudes from the outer surface of one end of the circular tube 53, and an outer thread 531 is provided at the other end. The second through hole 423 of the slider 42 is provided with an internal thread 424. The middle portion of the circular tube 53 passes through the long opening 411, the locking portion 530 abuts against the guide rail 41, and the outer thread 531 is screwed with the inner thread 424 of the second through hole 423 of the slider 42. A bolt 54 is bored in the circular tube 53 and the bolt 54 passes through the second through hole 423. The bolt 54 has a head 540 at one end and a second outer thread 541 at the other end, and the second outer screw 541 is screwed to the bolt hole 434 of the positioning seat 43.

In addition, the positioning seat 43 is provided with a latching pin 57. One end of the latching pin 57 is provided with a matching inclined surface 570, and the other end partially protrudes from the inner wall of the sleeve hole 43. The bayonet 57 is disposed between the positioning seat 43 and the positioning seat 43 A spring 58. The pivoting sleeve 47 is sleeved with a sleeve 55. The sleeve 55 is inserted into the shaft hole 433 of the positioning seat 43. A locking portion 56 is protruded from the outer peripheral surface thereof, and the locking portion 56 is provided with a guiding portion matched with the matching inclined surface 570. Bevel 560. When the pivot 47 moves in the state shown in FIG. 7, the inclined surface 570 of the bayonet 57 is pushed by the guide slope 560 of the engaging portion 56, so that the bayonet 57 faces the linear telescopic actuator 31 against the elastic force of the spring 58. The cylinder block 310 moves, and the end thereof is pressed against the outer peripheral surface of the cylinder block 310, so that the end of the bayonet 57 is fitted against the cylinder block 310 in addition to the positioning seat 43 narrowing the tightening cylinder block 310 with the sleeve hole 430. The fixing of the cylinder 310 of the linear telescopic actuator 31 by the positioning seat 43 is improved.

In addition, although the above mechanism is designed, as long as the extension length of the telescopic rod is increased, the reclining angle of the frame can be made larger. However, referring to FIG. 11, the present invention can be designed to make the frame 22 and the frame 20 relatively rotatable, and a locking device 60 is provided at the pivotal connection between the two, so that the frame 22 can be adjusted to be flat. Lying state.

The operation of the present invention

Referring to FIGS. 4 and 8, when the multifunctional wheelchair of the present invention performs the normal lifting operation, the trigger 51 is rotated to the state shown in FIG. 4, and the second outer screw 541 of the bolt 54 is The bolt hole 434 is screwed. At this time, the low-step surface 521 of the pivot portion 52 abuts against the spacer 49, the pivot 47 is in a state in which the nut 48 is not pulled, the two lugs 431/432 are separated, the sleeve hole 430 is not reduced, and the positioning seat 43 is not The linear telescoping actuator 31 is fixed, and the linear telescopic actuator 31 can freely traverse the sleeve hole 430. Further, in this state, the spacer 49 and the slider 42 do not clamp the guide rail 41, and the pivot shaft 47 is freely movable up and down along the long slit 411. At the same time, the positioning seat 43 and the slider 42 are fixed in a state of being non-rotatable, and the positioning seat 43 is also in a state of being relatively non-rotatable relative to the guide rail 41. When the linear telescopic actuator 31 is elongated, please compare FIG. 8 and FIG. 9. The length of the linear telescopic actuator 31 in FIG. 9 is longer than that in FIG. 8, so that the mount 20 in FIG. 9 is linear. The extension of the telescopic actuator 31 and the outward movement of the two toggle links The elbow joint 320/330 of the group 32/33, wherein the linear telescopic actuator 31 can be moved to perform telescopic movement through the two toggle link sets 32 because the positioning seat 43 can only move relative to the guide rail 41. /33 drives the mount 20 up to the state shown in FIG.

Referring to FIGS. 5 and 10, when the multifunctional wheelchair of the present invention is tilted backward, the trigger 51 is rotated to the state shown in FIG. 5, and the second outer snail of the bolt 54 is turned. The teeth 541 are not threaded with the bolt holes 434, causing the bolts 54 to exit the bolt holes 434. At this time, the high-order surface 520 of the pivot portion 52 abuts against the block 49, the pivot 47 is in the state of pulling the nut 48, the two lugs 431/432 are in abutment, the sleeve hole 430 is in a reduced state, and the positioning seat 43 is locked. The cylinder 310 of the linear telescopic actuator 31, the linear telescopic actuator 31 must not traverse the sleeve hole 43 freely. At the same time, the positioning seat 43 and the slider 42 are no longer fixed in a state of being non-rotatable, that is, the positioning seat 43 is no longer locked by the bolt 54 but only pivotally connected to the slider 42 by the pivot 47, so the positioning seat 43 The opposite slider 42 and the guide rail 41 are relatively rotatable, and the positioning seat 43 and the slider 42 are synchronously movable with respect to the guide rail 41. When the linear telescopic actuator 31 is elongated, that is, when the telescopic rod 311 of the linear telescopic actuator 31 is extended relative to the cylinder 310, the mount 20 shown in FIG. 10 is elongated by the linear telescopic actuator 31. The elbow joint 320 of the toggle link set 32 is pushed by a larger stroke, wherein the positioning seat 43 is movable relative to the guide rail 41, and the positioning seat 43 can rotate relative to the guide rail 41 with the pivot 47 as an axis, thereby being linear. The telescopic actuator 31 can extend the telescopic rod 311 to drive the front end of the frame 20 upward through the toggle link set 32, and the other set of toggle link sets 33 cooperate to move the rear end of the frame 20 downward. The state shown in Figure 10. Furthermore, since the guide post 24 of the mount 20 is passed through the top end of the long slot 411, the two side walls of the long slot 411 are restricted from moving forward, backward and upward, so that the telescopic rod 311 of the linear telescopic actuator 31 is extended to When positioned, the mount 20 is fixed at an oblique angle as shown in FIG. This kind of tilting state is suitable for the action of sitting on the back and resting on it. It is also convenient for taking care of sick patients and doing shampooing on patients.

Participation. in conclusion

Therefore, with the above arrangement, the present invention has both the functions of lifting and tilting. Moreover, since the two lifting and actuating mechanisms are respectively disposed on the two sides of the chassis and the frame, the center of the chassis can be designed to be hollow, and the through hole can be arranged in the center of the seat cushion. When the frame is raised to a certain height, the chassis can be moved. To the toilet, the seat frame and the seat cushion are located above the toilet opening, which is convenient for the patient to go to the toilet, that is, in addition to the lifting function of the seat frame, it is suitable for patients of different heights, and has the function of facilitating the toilet. It has the function of multi-function. Furthermore, the present invention has a lifting function in addition to the lifting frame, and has a tilting function, which can perform a backward tilting motion, allowing the patient to rest backwards, or facilitating the caregiver to wash the head of the patient, and thus has a multifunctional function.

The above is only one of the possible embodiments of the present invention, and is not intended to limit the scope of the patents of the present invention, and the equivalents of other variations of the contents, the features and the spirit of the following claims. All should be included in the scope of the present invention. The invention is specifically defined in the structural features of the scope of the patent application, is not found in the same kind of articles, and has practicality and progress, has met the requirements of the invention patents, and has applied for the law according to law, and invites the bureau to approve the patents according to law to maintain The legal rights of the applicant.

10‧‧‧ Chassis

11‧‧‧ Front wheel

12‧‧‧ Rear wheel

20‧‧‧ frame

21‧‧‧Cushion

22‧‧‧ 靠

23‧‧‧Handrail

24‧‧‧ Guide column

25‧‧‧Opening

26‧‧‧ Cover

30‧‧‧ Lifting Actuator

31‧‧‧ Linear Telescopic Actuator

310‧‧‧Cylinder block

311‧‧‧ Telescopic rod

32/33‧‧‧Toggle joint set

320/330‧‧‧ elbow joint

40‧‧‧Control agency

41‧‧‧rails

410‧‧‧ Guide slot

411‧‧‧Long slotted

42‧‧‧ Slider

420‧‧‧First bump

421‧‧‧second bump

422‧‧‧First perforation

423‧‧‧Second perforation

424‧‧‧ internal thread

43‧‧‧ Positioning Block

430‧‧‧ hole sets

431/432‧‧‧ lugs

433‧‧‧ shaft hole

434‧‧‧Bolt hole

45‧‧‧Frame

47‧‧‧ pivot

48‧‧‧ Nuts

49‧‧‧ pads

50‧‧‧ pivot

51‧‧‧ Trigger

52‧‧‧Band

520‧‧‧High-order surface

521‧‧‧low step

53‧‧‧ round tube

530‧‧‧Card Department

531‧‧‧ External thread

54‧‧‧ bolt

540‧‧‧ head

541‧‧‧Second external thread

55‧‧‧ bushing

56‧‧‧Card Department

560‧‧‧Bevel

57‧‧‧Karts

570‧‧‧ with bevel

60‧‧‧Locking device

1 is a partially enlarged perspective view of the present invention; FIG. 2 is a partially enlarged perspective view of the present invention; FIG. 3 is a partially exploded perspective view of the present invention; Figure 5 is a partial sectional view of the present invention and a schematic view of the trigger in a second position; Figure 6 is a partial sectional view of the embodiment of the present invention and a schematic view of the trigger in a first position; 7 is a schematic view showing a partial combination sectional view and a trigger lever in a second position according to another embodiment of the present invention; FIG. 8 is a side plan view showing the seat frame of the present invention at a first height; FIG. 10 is a side plan view showing the rear frame of the present invention in a rear view; and FIG. 11 is a side view of another embodiment of the present invention.

10‧‧‧ Chassis

11‧‧‧ Front wheel

12‧‧‧ Rear wheel

20‧‧‧ frame

21‧‧‧Cushion

22‧‧‧ 靠

23‧‧‧Handrail

24‧‧‧ Guide column

25‧‧‧Opening

26‧‧‧ Cover

30‧‧‧ Lifting Actuator

31‧‧‧ Linear Telescopic Actuator

32/33‧‧‧Toggle joint set

40‧‧‧Control agency

41‧‧‧rails

43‧‧‧ Positioning Block

45‧‧‧Frame

Claims (7)

A multifunctional wheelchair includes: a chassis having a front wheel and a rear wheel; a frame having a pad and a frame thereon, and a guide column on each side; and two lifting actuating mechanisms Each lifting and actuating mechanism includes at least one linear telescopic actuator, two corresponding toggle link sets, and the two ends of each of the toggle link sets are respectively pivotally connected to the chassis and the frame, and the linear expansion and contraction The two ends of the actuator are respectively pivotally connected to the elbow joints of the two toggle link sets; and two control mechanisms, each control mechanism includes a guide rail, a slider and a positioning seat; the guide rail is fixed on the chassis, The guide rail has a long guiding groove, and the bottom of the long guiding groove is provided with a long opening groove with a reduced width; the guiding column is inserted through the long opening groove; the slider is embedded in the long guiding groove to be movable along the guiding rail; The positioning seat has a set of holes and is coupled to the slider by a pivot; the sleeve is for the linear telescopic actuator to traverse. The multi-functional wheelchair according to claim 1, wherein the slider is provided with a bolt; the bolt is moved to select whether to insert a bolt hole of the positioning seat to control the positioning seat relative to the slider And whether the guide rail rotates or not. The multi-functional wheelchair according to claim 2, wherein one side of the slider is provided with a first protrusion and a second protrusion respectively located above and below, and the slider is provided with a first perforation extending transversely And a second through hole, the first through hole penetrates the first protrusion, the second hole penetrates the second protrusion; the pivot crosses the first through hole and the long slot of the guide rail; a second perforation and the long slot of the rail. The multi-functional wheelchair according to claim 3, wherein the long slot traverses a middle portion of a circular tube; the circular tube has an annular locking portion on one end of the circumference and an external thread on the other end; The second through hole of the slider is provided with an internal thread; the middle portion of the circular tube passes through the long slot, the engaging portion abuts the guide rail, and the outer thread of the circular tube and the second thread of the slider The inner thread of the perforation is screwed; the round tube is inserted through the bolt, the bolt has a head at one end and a second outer thread at the other end, and the second outer thread is provided with the bolt of the positioning seat Hole screwing. The multi-functional wheelchair according to claim 1, wherein the positioning seat has a C-shaped ring shape and has the sleeve hole in the center, and each of the two sides of the opening of the sleeve hole is provided with a lug, and the two lugs are opposite to each other and have an axis a hole is traversed, the shaft hole is bored by the pivot; the positioning seat abuts on a side of the slider, the positioning seat is pivotally connected to the slider by the pivot; the pivot end is worn from a lug And a nut is screwed out, and the other end of the pivot crosses the long slot and passes through a pad to fix a pivot post. The pivot post is rotatably connected to a pivot of one end of the trigger; the pivot The circular surface is cam-shaped with respect to the axis of the pivot post, such that one side thereof is a high-order surface, and the other side of the high-order surface is a low-order surface. The multi-functional wheelchair according to claim 1, wherein the positioning seat is provided with a bayonet; the latch is provided with a beveled surface at one end, and the other end partially protrudes from the inner wall of the sleeve; the bayonet and the positioning seat a spring is disposed between the positioning seat and the sliding block, the positioning seat is pivotally connected to the sliding seat, the positioning seat is provided with a shaft hole, and the pivot sleeve is sleeved into a shaft sleeve; the sleeve is inserted into a shaft hole of the positioning seat, the sleeve is sleeved a locking portion is protruded from the outer peripheral surface; the locking portion is provided with a guiding inclined surface matching the matching inclined surface; when the pivoting is actuated, the guiding inclined surface of the locking portion pushes the matching inclined surface of the locking pin The latch is moved toward a cylinder of the linear telescopic actuator against the elastic force of the spring, and the end of the latch is pressed against the outer peripheral surface of the cylinder. The multi-functional wheelchair according to claim 1, wherein the seat cushion is provided with an opening in the center thereof, and the opening is covered with a cover plate which is flush with the top surface of the seat cushion.