Wheelchair device

Abstract

The invention provides a wheelchair device, relates to the technical field of lower limb rehabilitation equipment, and aims to solve the problem that when an existing wheelchair device is switched from a sitting posture state to a standing posture state, a cushion cannot be well opened downwards relative to a backrest. The wheelchair device comprises a bottom frame assembly, an electric push rod, a connecting rod mechanism, a transmission assembly, a backrest assembly and a cushion assembly. The bottom frame assembly comprises a lateral supporting frame and a walking mechanism installed on the lateral supporting frame. One end of the electric push rod is rotationally connected to the lateral supporting frame, and the other end of the electric push rod is rotationally connected to the backrest assembly; the seat cushion assembly is rotationally installed on the backrest assembly, the connecting rod mechanism is installed between the lateral supporting frame and the backrest assembly, the transmission assembly comprises a first tooth profile arranged on the connecting rod mechanism, a second tooth profile arranged on the backrest assembly and a driving rod set connected between the first tooth profile and the seat cushion assembly, and the second tooth profile is meshed with the first tooth profile. According to the invention, the cushion assembly can be smoothly opened.

Description

Technical Field

[0001] The present invention relates to the technical field of lower limb rehabilitation equipment, and in particular to a wheelchair device. Background Art

[0002] A wheelchair is a chair with wheels that can help replace walking. It is an important means of transportation for the injured, sick, and disabled to recover at home, be transported around, see a doctor, and go out for activities.

[0003] In order to prevent muscle atrophy and other negative effects caused by users using the wheelchair in a sitting position for a long time, the prior art provides a wheelchair device that can switch between a sitting position and a standing position, which can not only meet the user's needs for use in a sitting position, but also can be used in a standing position, allowing the user to stand or walk slowly to a certain extent, so as to improve the user's athletic ability and achieve a certain rehabilitation effect.

[0004] However, in the existing wheelchair device that can be switched between a sitting state and a standing state, when the seat cushion is switched from the sitting state to the standing state, it is often impossible for the seat cushion to open downward relative to the backrest well, so that when the user stands inside the wheelchair device, it may collide with the user. Summary of the invention

[0005] The object of the present invention is to provide a wheelchair device to solve the technical problem that the seat cushion of the existing wheelchair device often cannot be well opened downward relative to the backrest when switching from a sitting state to a standing state.

[0006] The wheelchair device provided by the present invention comprises a base frame assembly, an electric push rod, a connecting rod mechanism, a transmission assembly, a backrest assembly and a cushion assembly, wherein the base frame assembly comprises a lateral support frame and a walking mechanism installed on the lateral support frame; one end of the electric push rod is rotatably connected to the lateral support frame, and the other end of the electric push rod is rotatably connected to the backrest assembly; the cushion assembly is rotatably installed on the backrest assembly, the connecting rod mechanism is installed between the lateral support frame and the backrest assembly, the transmission assembly comprises a first tooth shape arranged on the connecting rod mechanism, a second tooth shape arranged on the backrest assembly and a driving rod group connected between the first tooth shape and the cushion assembly, the second tooth shape is meshed with the first tooth shape, and the transmission assembly is configured to rotate the cushion assembly downward and open when the electric push rod is extended.

[0007] Furthermore, the connecting rod mechanism is fixedly provided with a first gear, and the outer contour of the first gear forms the first tooth shape; the backrest assembly includes two backrest side rods that are opposite and spaced apart in the left and right directions, and a plurality of backrest cross rods connected between the two backrest side rods, and the backrest side rods are fixedly provided with a second gear, and the outer contour of the second gear forms the second tooth shape.

[0008] Furthermore, the seat cushion assembly includes two seat cushion side rods that are opposite to each other and spaced apart in the left-right direction, and a plurality of seat cushion cross rods connected between the two seat cushion side rods; the drive rod group includes a drive rod and a transmission rod, wherein the first end of the drive rod is fixedly connected to the first gear, the second end of the drive rod is rotatably connected to the first end of the transmission rod, and the second end of the transmission rod is rotatably connected to the seat cushion side rod.

[0009] Furthermore, a limiting column is provided on a side of the seat cushion side rod facing away from the seat cushion cross rod, and a limiting groove is provided on a side of the lateral support frame facing the backrest assembly, and the limiting column is configured to be inserted into the limiting groove when the wheelchair device is in a sitting state; and / or, the transmission assembly also includes a shell, which is fixedly connected to the backrest side rod, and the shell has the first gear and the second gear cover arranged therein; the shell is provided with an arc-shaped clearance groove, and the first end of the drive rod passes through the arc-shaped clearance groove and is connected to the first gear.

[0010] Furthermore, the connecting rod mechanism includes a first connecting rod and a second connecting rod parallel to each other, one end of the first connecting rod and the second connecting rod are both rotatably connected to the lateral support frame, and the other ends of the first connecting rod and the second connecting rod are both rotatably connected to the backrest side rod; the first gear is fixedly arranged on the first connecting rod, and the connecting line between the first gear and the second gear is parallel to the first connecting rod.

[0011] Furthermore, the walking mechanism includes a front wheel assembly and a driving wheel assembly arranged at intervals along the front-to-back direction, the front wheel assembly includes a left front wheel, a right front wheel, a left pedal and a right pedal, the left pedal can be installed on the left front wheel in a flippable manner, the right pedal can be installed on the right front wheel in a flippable manner, one of the left pedal and the right pedal is provided with a stop, and the other of the left pedal and the right pedal is provided with a protrusion, and the protrusion is used to cooperate with the stop stop at the supporting position of the left pedal and the right pedal; the left front wheel and the right front wheel are both installed on the lateral support frame through a shock absorbing assembly.

[0012] Furthermore, the left front wheel and the right front wheel are both provided with a central rotating shaft; the shock-absorbing assembly comprises a connecting block, a spring shock absorber, a shock-absorbing bent piece, a pedal connecting piece, a fixed baffle, a pedal hinge shaft and a limit rod, the connecting block is provided with a mounting hole for being sleeved on the central rotating shaft, the lower ends of the spring shock absorber and the shock-absorbing bent piece are rotatably connected to the connecting block at the front and rear sides of the mounting hole respectively, and the upper ends of the spring shock absorber and the shock-absorbing bent piece are rotatably connected; the pedal connecting piece and the fixed baffle are respectively arranged at the front and rear sides of the connecting block, the pedal hinge shaft and the limit rod are installed between the pedal connecting piece and the fixed baffle at intervals along the upper and lower directions, wherein the pedal on the corresponding side is rotatably installed on the pedal hinge shaft, and the limit rod is used to limit the downward rotation angle of the pedal.

[0013] Further, the driving wheel assembly includes a mounting beam, a left wheel hub motor, a right wheel hub motor, a power supply mounting frame, a power supply module, an electric control module, a support block group, a distance measuring support frame, a motor clamp and a locking nut, wherein the left wheel hub motor and the right wheel hub motor are respectively arranged at the left and right ends of the mounting beam, the power supply mounting frame is connected to the rear side of the mounting beam and forms a storage space between the mounting beam, the electric control module is arranged in the storage space, the power supply module is fixedly arranged above the power supply mounting frame and is electrically connected to the electric control module; the distance measuring support frame is fixedly connected to the front side of the mounting beam, the distance measuring support frame is a hollow structure, and a distance measuring sensor is installed in front of the distance measuring support frame; the support block group is fixedly connected to the end of the distance measuring support frame and partially extends into the distance measuring support frame, and the support block group is fixedly connected to the lateral support frame; the motor shaft of the corresponding side wheel hub motor is passed through between the motor clamp and the mounting beam, and the locking nut is threadedly connected to the free end of the motor shaft.

[0014] Furthermore, armrest support structures are provided on both the left and right sides of the backrest assembly, wherein one of the armrest support structures on both sides is provided with a manipulation component; and the armrest support structure is also provided with an infrared sensor.

[0015] Furthermore, the walking mechanism includes a treadmill assembly and a driving wheel assembly, the treadmill assembly includes a fixed frame, a supporting wheel and a running belt rotatably arranged on the fixed frame, and the supporting wheel and the driving wheel assembly are installed on the fixed frame at intervals along the front-to-back direction.

[0016] The beneficial effects brought by the wheelchair device of the present invention are:

[0017] By setting up a wheelchair device which is mainly composed of a base frame assembly, an electric push rod, a connecting rod mechanism, a transmission assembly, a backrest assembly and a cushion assembly, when the wheelchair device needs to be switched from a sitting state to a standing state, the electric push rod is extended, and under the action of the connecting rod mechanism, the backrest assembly rises as the electric push rod is extended. In this process, a first tooth shape arranged on the connecting rod mechanism is meshed and transmitted with a second tooth shape arranged on the backrest assembly. At the same time, the rotation of the first tooth shape is transmitted to the cushion assembly through the driving rod group, so that the cushion assembly rotates downward and opens.

[0018] It can be seen that, through the above arrangement, the wheelchair device not only allows the seat cushion assembly to be smoothly rotated downward and opened, so that when the user stands inside the wheelchair device, there will be no collision or interference with the user, and further, this form of utilizing the first tooth shape and the second tooth shape to achieve power transmission allows the transmission assembly to be arranged at one end of the connecting rod mechanism close to the backrest assembly, thereby achieving the rear placement of the transmission assembly. Therefore, when the wheelchair device switches from a sitting state to a standing state, the transmission assembly will not physically interfere with the user, thereby reducing the safety hazard during the use of the wheelchair device.

[0019] In addition, the above-mentioned setting form of the transmission assembly has a smaller structure, reduces space occupation, and has stable transmission. When the seat cushion assembly is in an open state, the mutual engagement of the first tooth shape and the second tooth shape can be used to keep the seat cushion assembly in the open state without swinging at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the wheelchair device provided in the first embodiment of the present invention in a sitting position;

[0022] Figure 2 This is one of the partial structural schematic diagrams of the wheelchair device provided in the first embodiment of the present invention;

[0023] Figure 3 for Figure 2 An exploded view of the structure shown;

[0024] Figure 4 This is a schematic diagram of the structure of the wheelchair device provided in the first embodiment of the present invention when in a standing position;

[0025] Figure 5A side view of the wheelchair device provided in the first embodiment of the present invention in a sitting position;

[0026] Figure 6 A side view of the wheelchair device provided in the first embodiment of the present invention in a standing position;

[0027] Figure 7 A second schematic diagram of the partial structure of the wheelchair device provided in the first embodiment of the present invention;

[0028] Figure 8 for Figure 7 An exploded view of the structure shown;

[0029] Fig. 9 A third schematic diagram of the partial structure of the wheelchair device provided in the first embodiment of the present invention;

[0030] Fig.10 for Fig. 9 An exploded view of the structure shown;

[0031] Fig.11 A fourth schematic diagram of the partial structure of the wheelchair device provided in the first embodiment of the present invention;

[0032] Fig.12 This is a schematic diagram of the structure of the wheelchair device provided in the second embodiment of the present invention when in a standing position.

[0033] Description of reference numerals:

[0034] 100- chassis assembly; 200- electric push rod; 300- connecting rod mechanism; 400- transmission assembly; 500- backrest assembly; 600- cushion assembly; 700- armrest support structure; 710- infrared sensor; 800- operating components;

[0035] 110-lateral support frame; 111-rear support rod; 112-front support rod; 1111-limiting groove; 120-walking mechanism; 130-front wheel assembly; 140-driving wheel assembly; 150-shock absorption assembly; 160-treadmill assembly; 161-fixed frame; 162-support wheel; 163-running belt;

[0036] 131-left front wheel; 132-right front wheel; 133-left pedal; 134-right pedal; 135-stop; 136-bump; 137-central shaft;

[0037] 141-mounting crossbeam; 1421-left wheel hub motor; 1422-right wheel hub motor; 143-power supply mounting frame; 144-power supply module; 145-electronic control module; 146-support block group; 147-distance measuring support frame; 148-motor clamping piece; 149-locking nut;

[0038] 151-connecting block; 1511-mounting hole; 152-spring shock absorber; 153-shock-absorbing bending piece; 154-pedal connecting piece; 155-fixed baffle; 156-pedal hinge shaft; 157-limiting rod;

[0039] 310 - first connecting rod; 311 - first position; 312 - second position; 320 - second connecting rod;

[0040] 410 - first gear; 420 - second gear; 430 - driving rod group; 431 - driving rod; 432 - transmission rod; 440 - housing; 441 - arc-shaped clearance groove;

[0041] 510-backrest side rod; 511-hand push rod; 512-fixed connecting rod; 520-backrest cross rod; 530-rotating shaft rod;

[0042] 610-seat side rod; 620-seat cross rod; 630-limiting column. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] Embodiment 1

[0045] Figure 1 This is a schematic diagram of the structure of the wheelchair device provided in the first embodiment when in a sitting position. Figure 1 As shown, this embodiment provides a wheelchair device, including a base frame assembly 100, an electric push rod 200, a connecting rod mechanism 300, a transmission assembly 400, a backrest assembly 500 and a cushion assembly 600, wherein the base frame assembly 100 includes a lateral support frame 110 and a walking mechanism 120 installed on the lateral support frame 110; one end of the electric push rod 200 is rotatably connected to the lateral support frame 110, and the other end of the electric push rod 200 is rotatably connected to the backrest assembly 500; the cushion assembly 600 is rotatably installed on the backrest assembly 500, and the connecting rod mechanism 300 is installed between the lateral support frame 110 and the backrest assembly 500.

[0046] Figure 2 This is one of the partial structural diagrams of the wheelchair device provided in the first embodiment. Figure 3 for Figure 2 Exploded view of the structure shown. Figure 2 and Figure 3As shown, specifically, the transmission assembly 400 includes a first tooth shape arranged on the connecting rod mechanism 300, a second tooth shape arranged on the backrest assembly 500, and a driving rod group 430 connected between the first tooth shape and the cushion assembly 600, the second tooth shape is engaged with the first tooth shape, and the transmission assembly 400 is configured to rotate the cushion assembly 600 downward and open when the electric push rod 200 is extended.

[0047] By setting up a wheelchair device which is mainly composed of a base frame assembly 100, an electric push rod 200, a connecting rod mechanism 300, a transmission assembly 400, a backrest assembly 500 and a cushion assembly 600, when the wheelchair device needs to be switched from a sitting state to a standing state, the electric push rod 200 is extended, and under the action of the connecting rod mechanism 300, the backrest assembly 500 rises as the electric push rod 200 is extended. During this process, the first tooth shape arranged on the connecting rod mechanism 300 is meshed and transmitted with the second tooth shape arranged on the backrest assembly 500. At the same time, the rotation of the first tooth shape is transmitted to the cushion assembly 600 through the driving rod group 430, so that the cushion assembly 600 is rotated downward and opened.

[0048] It can be seen that, through the above arrangement, the wheelchair device not only allows the seat cushion assembly 600 to be smoothly rotated downward and opened, so that when the user stands inside the wheelchair device, there will be no collision or interference with the user, but also, this form of utilizing the first tooth shape and the second tooth shape to achieve power transmission allows the transmission assembly 400 to be arranged at one end of the connecting rod mechanism 300 close to the backrest assembly 500, thereby achieving the rear placement of the transmission assembly 400, so that when the wheelchair device switches from a sitting state to a standing state, the transmission assembly 400 will not physically interfere with the user, thereby reducing the safety hazard during the use of the wheelchair device.

[0049] In addition, the above-mentioned setting form of the transmission assembly 400 has a smaller structure, reduces the space occupied, and has stable transmission. When the seat cushion assembly 600 is in the open state, the mutual engagement of the first tooth shape and the second tooth shape can be used to keep the seat cushion assembly 600 in the open state without swinging at will.

[0050] Please continue to refer to Figure 1 In this embodiment, the lateral support frame 110 includes a rear support rod 111 and a front support rod 112 which are fixedly connected. The rear support rod 111 is roughly in a "V" shape with its opening facing backwards, and the electric push rod 200 is rotatably connected to the rear support rod 111.

[0051] Please continue to refer to Figures 1 to 3In this embodiment, the connecting rod mechanism 300 is fixedly provided with a first gear 410, and the outer contour of the first gear 410 forms a first tooth shape; the backrest assembly 500 includes two backrest side rods 510 that are opposite and spaced apart in the left-right direction, and a plurality of backrest cross rods 520 connected between the two backrest side rods 510, wherein the backrest side rods 510 are fixedly provided with a second gear 420, and the outer contour of the second gear 420 forms a second tooth shape.

[0052] The arrangement of the backrest cross bar 520 can provide support for the user during the leaning process. By using the outer contour of the first gear 410 to form the first tooth shape and the outer contour of the second gear 420 to form the second tooth shape, not only the processing difficulty of the connecting rod mechanism 300 and the backrest side bar 510 is reduced, but also, no matter how large the rotation angle of the seat cushion assembly 600 relative to the backrest assembly 500 is, the two can be effectively meshed through the first gear 410 and the second gear 420, so that the seat cushion assembly 600 can stay at any position.

[0053] Please continue to refer to Figure 1 In this embodiment, the backrest side rod 510 includes a push rod 511 and a fixed connecting rod 512 fixedly connected to the push rod 511, wherein a plurality of backrest cross rods 520 are connected between the two push rods 511, the electric push rod 200 is rotatably connected to the fixed connecting rod 512, and the second gear 420 is fixedly arranged on the fixed connecting rod 512.

[0054] It should be noted that, in this embodiment, the “left-right direction” and the “front-back direction” can refer to Figure 1 Indicated by the arrow.

[0055] Please continue to refer to Figure 2 and Figure 3 In this embodiment, the backrest assembly 500 further includes a rotating shaft rod 530 , wherein both ends of the rotating shaft rod 530 are respectively fixed to the fixed connecting rods 512 on both sides, and the seat cushion assembly 600 is rotatably mounted on the rotating shaft rod 530 .

[0056] Please continue to refer to Figure 2 and Figure 3 In this embodiment, the seat cushion assembly 600 includes two seat cushion side rods 610 that are opposite to each other and spaced apart in the left-right direction, and a plurality of seat cushion cross rods 620 connected between the two seat cushion side rods 610; the driving rod group 430 includes a driving rod 431 and a transmission rod 432, wherein the first end of the driving rod 431 is fixedly connected to the first gear 410, the second end of the driving rod 431 is rotatably connected to the first end of the transmission rod 432, and the second end of the transmission rod 432 is rotatably connected to the seat cushion side rod 610.

[0057] When the electric push rod 200 is extended to switch the wheelchair device from a sitting state to a standing state, under the action of the connecting rod mechanism 300, the backrest assembly 500 rises as the electric push rod 200 extends. During this process, the first gear 410 rotates with the action of the connecting rod mechanism 300, and transmits power to the driving rod 431 fixedly connected thereto, and then transmits power to the seat cushion side rod 610 through the transmission rod 432, so as to drive the seat cushion side rod 610 to rotate around the rotating shaft rod 530, thereby realizing the rotation and opening of the seat cushion assembly 600.

[0058] The above-mentioned arrangement of the driving rod group 430 effectively shortens the length of the driving rod 431 and the transmission rod 432, thereby reducing the volume of the driving rod group 430 and reducing the space occupied by the driving rod group 430. It not only ensures that the wheelchair device has sufficient sitting and standing space, but also avoids the risk of pinching hands during the folding of the wheelchair device due to the driving rod group 430 being too long and extending into the sitting space.

[0059] Figure 4 This is a schematic diagram of the structure of the wheelchair device provided in the first embodiment when it is in a standing position. Figure 1 , and combined with Figure 4 In this embodiment, a limiting column 630 is provided on the side of the seat cushion side rod 610 away from the seat cushion cross rod 620, and a limiting groove 1111 is provided on the side of the lateral support frame 110 facing the backrest assembly 500, and the limiting column 630 is configured to be inserted into the limiting groove 1111 when the wheelchair device is in a sitting state.

[0060] When the wheelchair device switches from a standing state to a sitting state, the seat cushion assembly 600 will rotate upward. When the seat cushion assembly 600 is rotated into place, the limiting column 630 arranged on the seat cushion side rod 610 will be inserted into the limiting groove 1111 provided on the lateral support frame 110 to support the seat cushion assembly 600.

[0061] This arrangement allows most of the user's weight to be transferred downward to the lateral support frame 110 through the seat cushion assembly 600 when the wheelchair is used in a sitting position, and is carried by the lateral support frame 110, thereby effectively reducing the force on the transmission assembly 400.

[0062] Please continue to refer to Figure 4 In this embodiment, the transmission assembly 400 may further include a shell 440. Specifically, the shell 440 is fixedly connected to the fixed connecting rod 512 in the backrest side rod 510, and the shell 440 covers the first gear 410 and the second gear 420 therein; the shell 440 is provided with an arc-shaped clearance groove 441, and the first end of the driving rod 431 passes through the arc-shaped clearance groove 441 and is connected to the first gear 410.

[0063] The setting of the above-mentioned shell 440 can realize the hidden installation of the first gear 410 and the second gear 420 to avoid exposure of the first gear 410 and the second gear 420. On the one hand, it can prevent the first gear 410 and the second gear 420 from pinching the user, and on the other hand, it can also protect the first gear 410 and the second gear 420.

[0064] Please continue to refer to Figure 2 and Figure 3 In this embodiment, the connecting rod mechanism 300 includes a first connecting rod 310 and a second connecting rod 320 which are parallel to each other, one end of the first connecting rod 310 and the second connecting rod 320 are both rotatably connected to the lateral support frame 110, and the other ends of the first connecting rod 310 and the second connecting rod 320 are both rotatably connected to the fixed connecting rod 512 of the backrest side rod 510; the first gear 410 is fixedly arranged on the first connecting rod 310, and the connecting line between the first gear 410 and the second gear 420 is parallel to the first connecting rod 310.

[0065] Through the above arrangement, the first connecting rod 310, the fixed connecting rod 512, the second connecting rod 320 and the rear support rod 111 form a parallelogram mechanism. When the electric push rod 200 is extended, the backrest assembly 500 can be lifted with the angle unchanged. Similarly, when the electric push rod 200 is retracted, the backrest assembly 500 can be lowered with the angle unchanged. That is, when the wheelchair device switches between the sitting state and the standing state, the angle of the backrest assembly 500 relative to the horizontal direction will not change. Therefore, during the above switching process, the posture of the user's upper body can be maintained unchanged, and the user does not need to lean forward or backward during the switching process, thereby improving the user experience.

[0066] Please continue to refer to Figure 3 In this embodiment, the first connecting rod 310 has a first position 311 and a second position 312 arranged at intervals along its extension direction, wherein the first gear 410 is fixedly disposed at the first position 311, the first connecting rod 310 is rotatably connected to the fixed connecting rod 512 through the second position 312, and the second gear 420 is fixedly connected to the fixed connecting rod 512 at the second position 312.

[0067] It should be noted that when only the electric push rod 200 is extended to lift the backrest assembly 500, the first connecting rod 310 and the second connecting rod 320 can also be arranged crosswise. In this case, the first connecting rod 310 and the second connecting rod 320 form a fork-scissors structure.

[0068] In this embodiment, the connecting rod mechanism 300 also includes a shell for housing the first connecting rod 310 and the second connecting rod 320, wherein corresponding holes can be opened in the shell to meet the transmission requirements between the first connecting rod 310 and the second connecting rod 320 and the outside world.

[0069] Figure 5 This is a side view of the wheelchair device provided in the first embodiment in a sitting position. Figure 6 This is a side view of the wheelchair device provided in the first embodiment in a standing position. Figure 5 and Figure 6 It can be seen that no matter the wheelchair device is in a sitting state or a standing state, the angle of the backrest assembly 500 relative to the horizontal direction remains unchanged.

[0070] Figure 7 This is the second partial structural diagram of the wheelchair device provided in the first embodiment. Figure 8 for Figure 7 Exploded view of the structure shown. Please continue to refer to Figure 1 and Figure 4 , and combined with Figure 7 and Figure 8 In this embodiment, the walking mechanism 120 may include a front wheel assembly 130 and a driving wheel assembly 140 arranged at intervals along the front-to-back direction. Specifically, the front wheel assembly 130 includes a left front wheel 131, a right front wheel 132, a left pedal 133 and a right pedal 134, wherein the left pedal 133 is installed on the left front wheel 131 so as to be flipped leftward and rightward, and the right pedal 134 is installed on the right front wheel 132 so as to be flipped leftward and rightward, the left pedal 133 is provided with a stop 135, and the right pedal 134 is provided with a protrusion 136, and the protrusion 136 is used to cooperate with the stop 135 at the supporting position of the left pedal 133 and the right pedal 134; the left front wheel 131 and the right front wheel 132 are both installed on the lateral support frame 110 through the shock absorbing assembly 150.

[0071] When the wheelchair device is used in a sitting position, the left pedal 133 and the right pedal 134 can be placed in a supporting position where the stop 135 cooperates with the stopper 136 to support the user's lower limbs; when the wheelchair device is used in a standing position, the left pedal 133 can be folded to the left to maintain a folded state with the left front wheel 131, and the right pedal 134 can be folded to the right to maintain a folded state with the right front wheel 132, so as to make room between the left front wheel 131 and the right front wheel 132, thereby facilitating the user to use the device while standing.

[0072] In addition, by arranging the shock absorbing assembly 150 between the left front wheel 131 and the lateral support frame 110 and between the right front wheel 132 and the lateral support frame 110, when the wheelchair device encounters uneven roads during travel, the vibration can be effectively absorbed to improve the comfort during use.

[0073] Please continue to refer to Figure 8 In this embodiment, the left front wheel 131 and the right front wheel 132 are both provided with a central shaft 137; the shock absorbing assembly 150 includes a connecting block 151, a spring shock absorber 152, a shock absorbing bending piece 153, a pedal connecting piece 154, a fixed baffle 155, a pedal hinge shaft 156 and a limiting rod 157. Specifically, the connecting block 151 is provided with a mounting hole 1511 for being sleeved on the central shaft 137, and the lower ends of the spring shock absorber 152 and the shock absorbing bending piece 153 are respectively provided in the mounting hole 1511. The front and rear sides of 1 are rotatably connected with the connecting block 151, and the upper ends of the spring shock absorber 152 and the shock-absorbing bending member 153 are rotatably connected; the pedal connecting member 154 and the fixed baffle 155 are respectively arranged on the front and rear sides of the connecting block 151, and the pedal hinge shaft 156 and the limiting rod 157 are installed between the pedal connecting member 154 and the fixed baffle 155 at intervals along the upper and lower directions, wherein the pedal on the corresponding side is rotatably installed on the pedal hinge shaft 156, and the limiting rod 157 is used to limit the downward rotation angle of the pedal.

[0074] The shock absorbing assembly 150 is configured as above so that the connecting block 151, the spring shock absorber 152 and the shock absorbing bending part 153 are hinged in pairs to form a triangular structure. During use, when the shock absorbing assembly 150 is subjected to vibration force, the spring shock absorber 152 is compressed and deformed to play a role of shock absorption and buffering.

[0075] By arranging a limit rod 157 below the hinge shaft, it is possible to limit the downward rotation angle of the left pedal 133 and the right pedal 134, so that the left pedal 133 and the right pedal 134 can be stably in the supporting position.

[0076] In this embodiment, the left front wheel 131 and the right front wheel 132 are omnidirectional wheels.

[0077] Fig. 9 This is the third partial structural diagram of the wheelchair device provided in the first embodiment. Fig.10 for Fig. 9 An exploded view of the structure shown, Fig.11 This is the fourth schematic diagram of the partial structure of the wheelchair device provided in the first embodiment. Figures 9 to 11As shown, the driving wheel assembly 140 includes a mounting beam 141, a left wheel hub motor 1421, a right wheel hub motor 1422, a power supply mounting frame 143, a power supply module 144, an electric control module 145, a support block group 146, a distance measurement support frame 147, a motor clamp 148 and a locking nut 149, wherein the left wheel hub motor 1421 and the right wheel hub motor 1422 are respectively arranged at the left and right ends of the mounting beam 141, the power supply mounting frame 143 is connected to the rear side of the mounting beam 141 and forms an accommodation space with the mounting beam 141, the electric control module 145 is arranged in the accommodation space, and the power supply module 144 It is fixedly arranged above the power supply mounting frame 143 and electrically connected to the electronic control module 145; the ranging support frame 147 is fixedly connected to the front side of the mounting beam 141, the ranging support frame 147 is a hollow structure, and a ranging sensor is installed in front of the ranging support frame 147; the support block group 146 is fixedly connected to the end of the ranging support frame 147 and partially extends into the ranging support frame 147, and the support block group 146 is fixedly connected to the lateral support frame 110; the motor shaft of the corresponding side hub motor is passed through the motor clamp 148 and the mounting beam 141, and the locking nut 149 is threadedly connected to the free end of the motor shaft.

[0078] By providing the power supply mounting frame 143 in the driving wheel assembly 140, the power supply module 144 and the electric control module 145 can be installed separately to avoid excessive heat concentration in the driving assembly. The installation of the mounting crossbeam 141 can ensure the overall structural stability of the driving wheel assembly 140. By providing the locking nut 149, the motor shaft can be detachably fixed between the mounting crossbeam 141 and the motor clamp 148, which is convenient for disassembly and maintenance of the left hub motor 1421 and the right hub motor 1422. By installing a distance measuring sensor in front of the distance measuring support frame 147, when the wheelchair device is used in a standing state, the distance between the user's feet and the sensor can be identified by the distance measuring sensor to obtain the user's walking distance data.

[0079] In this embodiment, the rear support rod 111 is also a hollow structure. The rear support rod 111 is sleeved on the raised portion of the support block assembly 146 through the cavity therein, and the two are fixedly connected by a locking screw.

[0080] Please continue to refer to Figure 1 and Figure 4 In this embodiment, armrest support structures 700 are provided on both sides of the backrest assembly 500, wherein one of the armrest support structures 700 on both sides is provided with a manipulation component 800; the armrest support structure 700 is also provided with an infrared sensor 710.

[0081] The operation component 800 is provided to facilitate the user to operate the wheelchair device. The infrared sensor 710 is provided on the armrest support structure 700, and the operation component 800 can be used to control the movement after ensuring that the user sits correctly on the wheelchair device, thereby preventing the user from accidentally touching the wheelchair device and causing safety problems.

[0082] In this embodiment, the operating component 800 can at least control the extension and retraction of the electric push rod 200, as well as the start, stop, movement and turning of the wheelchair device. Among them, how to use the operating component 800 to achieve the above functions can be obtained by technical personnel in this field based on the existing technology. It is not the focus of improvement of this application, so it will not be repeated here.

[0083] Embodiment 2

[0084] The second embodiment provides another wheelchair device, which is different from the wheelchair device provided in the first embodiment as described below.

[0085] Fig.12 This is a schematic diagram of the structure of the wheelchair device provided in the second embodiment when it is in a standing position. Fig.12 As shown, the wheelchair device provided in this embodiment, the walking mechanism 120 includes a treadmill assembly 160 and a driving wheel assembly 140. Specifically, the treadmill assembly 160 includes a fixed frame 161, a supporting wheel 162 and a running belt 163 rotatably arranged on the fixed frame 161, and the supporting wheel 162 and the driving wheel assembly 140 are installed on the fixed frame 161 at intervals along the front-to-back direction.

[0086] When the wheelchair device is used in a standing position, the user can place both feet on the running belt 163 and perform walking training using the running belt 163. The configuration of the wheelchair device enriches the use functions, thereby meeting the use needs of different users.

[0087] The specific structure of the driving wheel assembly 140 is the same as that of the driving wheel assembly 140 of the wheelchair device in the first embodiment, so it will not be described in detail.

[0088] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

[0089] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0090] In the above embodiments, the descriptions of directions such as “upper”, “lower”, “left”, “right”, “front”, “back”, and “side” are all based on the drawings.

[0091] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wheelchair device, characterized in that: The invention comprises a base frame assembly (100), an electric push rod (200), a connecting rod mechanism (300), a transmission assembly (400), a backrest assembly (500) and a cushion assembly (600), wherein the base frame assembly (100) comprises a lateral support frame (110) and a walking mechanism (120) installed on the lateral support frame (110); one end of the electric push rod (200) is rotatably connected to the lateral support frame (110), and the other end of the electric push rod (200) is rotatably connected to the backrest assembly (500); the cushion assembly (600) is rotatably installed on the backrest The seat cushion assembly (600) is a seat cushion assembly (500), wherein the connecting rod mechanism (300) is installed between the lateral support frame (110) and the backrest assembly (500), the transmission assembly (400) includes a first tooth shape arranged on the connecting rod mechanism (300), a second tooth shape arranged on the backrest assembly (500), and a driving rod group (430) connected between the first tooth shape and the seat cushion assembly (600), the second tooth shape is meshed with the first tooth shape, and the transmission assembly (400) is configured to rotate the seat cushion assembly (600) downward to open when the electric push rod (200) is extended.

2. The wheelchair device according to claim 1, characterized in that: The connecting rod mechanism (300) is fixedly provided with a first gear (410), and the outer contour of the first gear (410) forms the first tooth shape; the backrest assembly (500) comprises two backrest side rods (510) which are arranged opposite to each other and spaced apart in the left-right direction, and a plurality of backrest cross rods (520) connected between the two backrest side rods (510), and the backrest side rods (510) are fixedly provided with a second gear (420), and the outer contour of the second gear (420) forms the second tooth shape.

3. The wheelchair device according to claim 2, characterized in that: The seat cushion assembly (600) includes two seat cushion side rods (610) that are opposite to each other and spaced apart in the left-right direction, and a plurality of seat cushion cross rods (620) connected between the two seat cushion side rods (610); the drive rod group (430) includes a drive rod (431) and a transmission rod (432), wherein the first end of the drive rod (431) is fixedly connected to the first gear (410), the second end of the drive rod (431) is rotatably connected to the first end of the transmission rod (432), and the second end of the transmission rod (432) is rotatably connected to the seat cushion side rod (610).

4. The wheelchair device according to claim 3, characterized in that: A limiting column (630) is arranged on the side of the seat cushion side rod (610) facing away from the seat cushion cross rod (620), and a limiting groove (1111) is arranged on the side of the lateral support frame (110) facing the backrest assembly (500), and the limiting column (630) is configured to be inserted into the limiting groove (1111) when the wheelchair device is in a sitting state; and / or, the transmission assembly (400) further includes a shell (440), the shell (440) is fixedly connected to the backrest side rod (510), and the shell (440) covers the first gear (410) and the second gear (420) inside; the shell (440) is provided with an arc-shaped clearance groove (441), and the first end of the drive rod (431) passes through the arc-shaped clearance groove (441) and is connected to the first gear (410).

5. The wheelchair device according to claim 2, characterized in that: The connecting rod mechanism (300) comprises a first connecting rod (310) and a second connecting rod (320) which are parallel to each other, one end of the first connecting rod (310) and the second connecting rod (320) are both rotatably connected to the lateral support frame (110), and the other ends of the first connecting rod (310) and the second connecting rod (320) are both rotatably connected to the backrest side rod (510); the first gear (410) is fixedly arranged on the first connecting rod (310), and the connecting line between the first gear (410) and the second gear (420) is parallel to the first connecting rod (310).

6. The wheelchair device according to claim 1, characterized in that: The walking mechanism (120) comprises a front wheel assembly (130) and a driving wheel assembly (140) arranged at intervals in the front-to-rear direction, the front wheel assembly (130) comprising a left front wheel (131), a right front wheel (132), a left pedal (133) and a right pedal (134), the left pedal (133) being mounted on the left front wheel (131) in a manner that it can be flipped leftwards and rightwards, the right pedal (134) being mounted on the right front wheel (132) in a manner that it can be flipped leftwards and rightwards, the left pedal (133) and the right pedal (134) being mounted on the left front wheel (132) in a manner that it can be flipped leftwards and rightwards, One of the right pedals (134) is provided with a stopper (135), and the other of the left pedal (133) and the right pedal (134) is provided with a protrusion (136), and the protrusion (136) is used to cooperate with the stopper (135) at the supporting position of the left pedal (133) and the right pedal (134); the left front wheel (131) and the right front wheel (132) are both installed on the lateral support frame (110) through a shock absorbing assembly (150).

7. The wheelchair device according to claim 6, characterized in that: The left front wheel (131) and the right front wheel (132) are both provided with a central rotating shaft (137); the shock absorbing assembly (150) comprises a connecting block (151), a spring shock absorber (152), a shock absorbing bending piece (153), a pedal connecting piece (154), a fixed baffle (155), a pedal hinge shaft (156) and a limiting rod (157); the connecting block (151) is provided with a mounting hole (1511) for being fitted on the central rotating shaft (137); the lower ends of the spring shock absorber (152) and the shock absorbing bending piece (153) are respectively disposed at the front and rear ends of the mounting hole (1511). The side is rotatably connected to the connecting block (151), and the upper ends of the spring shock absorber (152) and the shock-absorbing bending member (153) are rotatably connected; the pedal connecting member (154) and the fixed baffle (155) are respectively arranged on the front and rear sides of the connecting block (151), and the pedal hinge shaft (156) and the limit rod (157) are installed between the pedal connecting member (154) and the fixed baffle (155) at intervals along the upper and lower directions, wherein the pedal on the corresponding side is rotatably installed on the pedal hinge shaft (156), and the limit rod (157) is used to limit the downward rotation angle of the pedal.

8. The wheelchair device according to claim 6, characterized in that: The driving wheel assembly (140) comprises a mounting crossbeam (141), a left wheel hub motor (1421), a right wheel hub motor (1422), a power supply mounting frame (143), a power supply module (144), an electric control module (145), a support block group (146), a distance measurement support frame (147), a motor clamp (148) and a locking nut (149), wherein the left wheel hub motor (1421) and the right wheel hub motor (1422) are respectively arranged at the left and right ends of the mounting crossbeam (141), the power supply mounting frame (143) is connected to the rear side of the mounting crossbeam (141) and forms a storage space with the mounting crossbeam (141), the electric control module (145) is arranged in the storage space, and the power supply module (144) is fixed to the mounting crossbeam (141). The invention relates to a lateral support frame (110) and a side support frame (111) for supporting a motor of a corresponding side hub motor. The lateral support frame (110) is fixedly arranged above the power supply mounting frame (143) and is electrically connected to the electric control module (145); the distance measuring support frame (147) is fixedly connected to the front side of the mounting crossbeam (141); the distance measuring support frame (147) is a hollow structure; a distance measuring sensor is installed in front of the distance measuring support frame (147); the support block group (146) is fixedly connected to the end of the distance measuring support frame (147) and partially extends into the distance measuring support frame (147); the support block group (146) is fixedly connected to the lateral support frame (110); the motor shaft of the corresponding side hub motor is passed through between the motor clamp (148) and the mounting crossbeam (141); the locking nut (149) is threadedly connected to the free end of the motor shaft.

9. The wheelchair device according to claim 1, characterized in that: The left and right sides of the backrest assembly (500) are both provided with armrest support structures (700), wherein one of the armrest support structures (700) on the two sides is provided with a manipulation component (800); the armrest support structure (700) is also provided with an infrared sensor (710).

10. The wheelchair device according to claim 1, characterized in that: The walking mechanism (120) comprises a treadmill assembly (160) and a driving wheel assembly (140); the treadmill assembly (160) comprises a fixing frame (161), a supporting wheel (162) and a running belt (163) rotatably arranged on the fixing frame (161); the supporting wheel (162) and the driving wheel assembly (140) are installed on the fixing frame (161) at intervals along the front-rear direction.

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