CN113101071B

CN113101071B - Wheel chair

Info

Publication number: CN113101071B
Application number: CN202110363876.2A
Authority: CN
Inventors: 何伟; 秦军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-09-06
Anticipated expiration: 2041-04-02
Also published as: CN113101071A

Abstract

The invention provides a wheelchair, which comprises a cushion assembly, a leg support positioned at the front side of the cushion assembly, a backrest positioned at the rear side of the cushion assembly, a control component and a control component, wherein the leg support and the backrest are rotatably connected with the cushion assembly, the rotation angles of the leg support and the backrest can be respectively driven and adjusted by a first rotary motor and a second rotary motor, and the control component can control the rotation speed and the rotation direction of the first rotary motor and the second rotary motor. The invention respectively controls the rotating speed and the rotating direction of the first rotating motor and the second rotating motor through the control part, thereby realizing the position change of the leg support and the backrest, forcing the legs, the waist and the back of the disabled to move, promoting the blood circulation of corresponding parts, effectively preventing the damage of muscle stiffness, tissue relaxation and the like caused by the disabled maintaining one posture for a long time, and improving the health of the disabled.

Description

Wheel chair

Technical Field

The invention belongs to the technical field of nursing auxiliary instruments, and particularly relates to a wheelchair.

Background

With the serious social problems of too much aging population and social disability population, enterprises and related scientific research institutes develop various devices for helping the aged and the disabled, represented by wheelchairs and nursing beds, in order to meet market demands, and the device is mainly used for providing walking tools with excellent performance for the aged and the disabled, improving the freedom of activities and improving the quality of life. From the perspective of medical care, the device for helping the old and the disabled has many disadvantages, for example, the problems of abdominal muscle relaxation, increased venous pressure, abnormal spinal bending and the like can be caused when a user sits on a wheelchair for a long time, the damage can be caused to the functions of organs such as respiration and digestion, the heart function can be declined, the blood circulation is slow, the muscle tissue is relaxed and the like can be caused when the user lies in bed for a long time, mental depression can be easily caused to patients, and social problems can be caused. In addition, because the wheelchair and the sickbed lack a bridge which is effectively connected, the patient needs to be transferred to the sickbed from the wheelchair by holding the shoulders and the back with hands, time and labor are wasted, and secondary damage is often caused by friction and collision in the transfer process.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to provide a wheelchair which can force the legs, the waist and the back of the disabled to move, promote the blood circulation of the corresponding parts, effectively prevent the disabled from suffering from the damages of muscle stiffness, tissue relaxation and the like caused by keeping one posture for a long time, and improve the health of the disabled.

In order to solve the above problems, the present invention provides a wheelchair including a seat cushion assembly, a leg rest located on a front side of the seat cushion assembly, a backrest located on a rear side of the seat cushion assembly, the leg rest and the backrest being rotatably connected to the seat cushion assembly, and rotation angles of the leg rest and the backrest being capable of being driven and adjusted by a first rotation motor and a second rotation motor, respectively, and a control member capable of controlling rotation speeds and rotation directions of the first rotation motor and the second rotation motor.

Preferably, the cushion subassembly includes the seat, be configured with the recess on the seat, the recess extends and runs through along the horizontal direction the relative both sides of seat, be connected with the backing plate in the recess slidable, the backing plate can be controlled to stretch out or accomodate in the recess.

Preferably, two first electric push rods are further arranged in the groove, and free ends of extension rods of the two first electric push rods are respectively connected with the base plate to drive the base plate to extend out or be accommodated in the groove.

Preferably, a stopper is arranged at the notch of the groove, a limiting block is arranged on the backing plate, and when the backing plate is controlled to extend out of the groove, the stopper can be in contact with the limiting block.

Preferably, the wheelchair further comprises a base, a first direction position adjusting assembly is arranged on the base, the position of the cushion assembly in the first direction can be adjusted by the first direction position adjusting assembly, and the first direction is the horizontal direction.

Preferably, first direction position adjustment subassembly include with base fixed connection's second electric putter and connect in support on second electric putter's the extension bar, be equipped with second direction position adjustment subassembly on the support, second direction position adjustment subassembly can be adjusted the position of cushion subassembly in the second direction, the second direction be the horizontal direction and with first direction is perpendicular.

Preferably, the second direction position adjustment assembly comprises a third rotary motor fixedly connected with the support and a support column in threaded connection with a threaded rotating shaft of the third rotary motor, a rotary driving assembly is arranged on the support column, and the rotary driving assembly can drive the cushion assembly to rotate around the central line of the support column.

Preferably, the rotation driving assembly comprises a fourth rotation motor, and the tail end of a rotating shaft of the fourth rotation motor is connected with the bottom side surface of the seat plate through a seat plate connecting column.

Preferably, a seat plate positioning rod is further arranged on the bottom side surface of the seat plate, an annular sliding groove is formed in one side, facing the seat plate, of the supporting column, and the tail end of the seat plate positioning rod is arranged in the annular sliding groove.

Preferably, the base has front running wheels and rear running wheels, the front running wheels and/or the rear running wheels being drivable by a fifth rotary electric motor.

According to the wheelchair provided by the invention, the rotation speed and the rotation direction of the first rotary motor and the second rotary motor are respectively controlled by the control part, so that the position change of the leg support and the backrest is realized, the legs and the waist and the back of the disabled can be forced to move, the blood circulation of corresponding parts is promoted, the damage of muscle stiffness, tissue relaxation and the like caused by the fact that the disabled keeps one posture for a long time is effectively prevented, and the health of the disabled is improved.

Drawings

FIG. 1 is a perspective view of a wheelchair in accordance with an embodiment of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1 (with parts of the cushion assembly and the like omitted);

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 1 at B;

fig. 5 is a schematic view illustrating a connection relationship between the cushion plate and the seat plate in fig. 1, in which the cushion plate is received in the groove.

The reference numerals are represented as:

1. a cushion assembly; 11. a seat plate; 111. a seat plate connecting column; 112. a seat plate positioning rod; 12. a groove; 121. a stopper; 13. a backing plate; 131. a limiting block; 14. a first electric push rod; 2. a leg rest; 21. a first rotary electric machine; 22. a first connecting rotating shaft; 3. a backrest; 31. a second rotary electric machine; 311. a first case; 312. a first drive belt; 32. a handrail; 33. a second connecting rotating shaft; 41. a control part; 5. a base; 51. a first directional position adjustment assembly; 511. a second electric push rod; 512. a slider; 513. a first linear chute; 52. a second direction position adjustment assembly; 521. a third rotary electric machine; 522. a threaded rotating shaft; 523. a second linear chute; 524. positioning the chute; 525. a nut structure; 526. a support column positioning rod; 53. a swing drive assembly; 531. a fourth rotary electric machine; 6. a support; 7. a support column; 71. an annular chute; 81. a front running wheel; 82. rear running wheels; 83. a fifth rotary electric machine; 831. a second box body; 832. a second belt; 833. the third is connected with the rotating shaft.

Detailed Description

Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, a wheelchair is provided, which includes a seat cushion assembly 1, a leg rest 2 located at a front side of the seat cushion assembly 1, a backrest 3 located at a rear side of the seat cushion assembly 1, the leg rest 2 and the backrest 3 are rotatably connected to the seat cushion assembly 1, and rotation angles of the leg rest 2 and the backrest 3 can be respectively driven and adjusted by a first rotation motor 21 and a second rotation motor 31, and the wheelchair further includes a control member 41, and the control member 41 can control rotation speeds and rotation directions of the first rotation motor 21 and the second rotation motor 31. In this embodiment, the control unit 41 controls the rotation speed and the rotation direction of the first rotating motor 21 and the second rotating motor 31, respectively, so as to change the positions of the leg rest 2 and the backrest 3, thereby forcing the legs and the waist and the back of the disabled person to move, promoting the blood circulation at the corresponding positions, effectively preventing the disabled person from suffering from the damages of muscle stiffness, tissue relaxation and the like caused by keeping one posture for a long time, and improving the health of the disabled person.

Specifically, the leg rest 2 forms a pivot connection (rotatable connection) with the seat cushion assembly 1 through a first connecting rotating shaft 22, the first rotary motor 21 drives the first connecting rotating shaft 22 to rotate the leg rest 2, and the first rotary motor 21 and the first connecting rotating shaft 22 can be in transmission connection through a transmission belt (not referenced in the figure); equally reason, back 3 with realize pivot joint through second connection pivot 33 between the cushion subassembly 1, second rotating electrical machines 31 is installed in first box body 311 to guarantee that it possesses waterproof dustproof performance, can prevent the emergence of potential safety hazard simultaneously, second rotating electrical machines 31 through first drive belt 312 with the transmission is connected between the second connection pivot 33. An armrest 32 can be further disposed on the backrest 3, and the armrest 32 can be lifted to ensure that the left and right sides of the cushion assembly 1 are free from obstacles, and the control component 41 is preferably disposed at the armrest 32, so as to facilitate the control of the wheelchair by the disabled.

In some embodiments, the seat cushion assembly 1 includes a seat plate 11, a groove 12 is configured on the seat plate 11, the groove 12 extends in a horizontal direction and penetrates through two opposite sides of the seat plate 11, a cushion plate 13 is slidably connected in the groove 12, and the cushion plate 13 can be controlled to extend out of or be received in the groove 12. In this technical solution, the backing plate 13 can be stretched out from the groove 12, so that the length or the width of the cushion assembly 1 can be extended, for example, the groove 12 is disposed on the left side of the seat plate 11 (based on the actual position of the disabled using the wheelchair), when the disabled needs to transfer from the wheelchair to the bed, the backing plate 13 can be controlled to stretch out from the groove 12, so that the backing plate 13 can be used to compensate the gap between the wheelchair and the bed, and the position transfer of the disabled can be realized very conveniently. As a specific implementation manner, preferably, two first electric push rods 14 are further arranged in the groove 12, free ends of extension rods of the two first electric push rods 14 are respectively connected to the backing plate 13 to drive the backing plate 13 to extend out or be accommodated in the groove 12, and the two first electric push rods 14 are respectively symmetrically located at two corresponding sides of the backing plate 13, so that stability of the extending or accommodating process of the backing plate 13 can be guaranteed.

Preferably, a stopper 121 is arranged at a notch of the groove 12, a stopper 131 is arranged on the backing plate 13, and when the backing plate 13 is controlled to extend out of the groove 12, the stopper 121 can contact with the stopper 131, the stopper 121 in the technical scheme aims to limit the extending position of the backing plate 13, and can cooperate with the stopper 131 to effectively prevent the backing plate 13 from coming off from the groove 12, so as to prevent potential safety hazards.

In some embodiments, the wheelchair further includes a base 5, the cushion assembly 1 is clamped in an area above the base 5, specifically, a first direction position adjusting assembly 51 is disposed on the base 5, the first direction position adjusting assembly 51 can adjust the position of the cushion assembly 1 in a first direction, the first direction is a horizontal direction, and in a specific embodiment, the first direction is a forward and backward traveling direction of the wheelchair, so that the forward and backward position of the cushion assembly 1 can be appropriately adjusted; further, first direction position adjustment subassembly 51 include with base 5 fixed connection's second electric putter 511 and connect in support 6 on second electric putter 511's the extension bar, be equipped with second direction position adjustment subassembly 52 on support 6, second direction position adjustment subassembly 52 can adjust the position of cushion subassembly 1 in the second direction, the second direction be the horizontal direction and with first direction is perpendicular, with first direction position adjustment subassembly 51 suits, the second direction specifically is the left and right directions of wheelchair direction of travel, thereby makes the position adjustment of cushion subassembly 1 realizes the quadrature adjustment on the horizontal plane, and the adjustment margin obtains improving, can satisfy disabled person's more demands. For the first direction position adjusting assembly 51, referring to fig. 1, a driving part of the first direction position adjusting assembly is the second electric push rod 511, a slide block 512 may be specifically connected to a tail end of an extension rod of the second electric push rod 511, the slide block 512 and the support 6 may be fixedly connected, at this time, the slide block 512 is slidably connected in the first linear sliding groove 513, so that the support 6 is more flexible to produce and manufacture, and the slide block 512 is assembled with the support 6 after being manufactured separately.

The second direction position adjusting assembly 52 includes a third rotating motor 521 fixedly connected to the support 6 and a support post 7 screwed to a threaded rotating shaft 522 of the third rotating motor 521, a rotation driving assembly 53 is disposed on the support post 7, and the rotation driving assembly 53 can drive the seat cushion assembly 1 to rotate around a central line of the support post 7. With respect to the second direction position adjusting assembly 52, referring to fig. 2 and 3, more specifically, the supporting column 7 is in threaded connection with the threaded rotating shaft 522 through a nut structure 525, when the third rotary motor 521 operates, the threaded rotating shaft 522 drives the nut structure 525 and further drives the supporting column 7 to form a linear reciprocating motion along the second direction, and it can be understood that the nut structure 525 is limited in the second linear sliding groove 523. Further, in order to ensure stable and reliable linear sliding of the supporting column 7, a supporting column positioning rod 526 is disposed at the bottom end of the supporting column 7, and is slidably connected to the positioning chute 524.

Specifically, the rotation driving assembly 53 includes a fourth rotation motor 531, the end of the rotating shaft of the fourth rotation motor 531 is connected to the bottom side surface of the seat 11 through a seat connecting column 111, when the fourth rotation motor 531 is controlled to operate, the fourth rotation motor 531 drives the seat cushion assembly 1 to rotate by a certain angle, so that the movement of the disabled can be further facilitated, that is, the wheelchair at the moment can assist the disabled to adjust the angle between the wheelchair seat cushion and the sofa or the bed, and then the wheelchair is transferred to the sofa or the bed at the position on the like under the angle suitable for the self to exert force. . Further, referring to fig. 4, a seat plate positioning rod 112 is further disposed on a bottom side surface of the seat plate 11, an annular sliding groove 71 is configured on one side of the supporting pillar 7 facing the seat plate 11, and a tail end of the seat plate positioning rod 112 is installed in the annular sliding groove 71, which can ensure stable reliability of the rotation process of the seat plate 11. Preferably, the fourth rotating electrical machine 531 may be a stepping motor to control and select the rotating angle more reliably.

The base 5 has front running wheels 81 and rear running wheels 82, and the front running wheels 81 and/or the rear running wheels 82 can be driven by a fifth rotating electric machine 83. In one embodiment, the front running wheels 81 can be driven by the fifth rotating electric machine 83, i.e. the front running wheels 81 are driving running wheels and the rear running wheels 82 are driven running wheels. Specifically, the front traveling wheels 81 and the rear traveling wheels 82 are rotatably connected to the base 5 through third connecting shafts 833, respectively, for the front traveling wheels 81, the fifth rotating electrical machine 83 is in driving connection with the third connecting shafts 833, specifically, it is in transmission connection with the third connecting shafts 833 through a second transmission belt 832, and the fifth rotating electrical machine 83 is preferably also disposed in the second box 831.

Preferably, a power supply unit (not shown in the figure) is arranged on the base 5, preferably a lithium battery pack, which has the advantages of high voltage, light weight, easy disassembly, convenient and quick electricity charge and storage, and meanwhile, the lithium battery has a long service life, does not contain toxic and harmful substances such as lead, mercury and cadmium, is more environment-friendly, and can reduce secondary damage to the environment and people, and the lithium battery pack is electrically connected with any one of the control component 41, the first rotating motor 21, the second rotating motor 31, the first electric push rod 14, the second electric push rod 511, the third rotating motor 521, the fourth rotating motor 531 and the fifth rotating motor 83; it is understood that the control component 41 can also control any one of the first electric push rod 14, the second electric push rod 511, the third rotation motor 521, the fourth rotation motor 531 and the fifth rotation motor 83 to operate.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The wheelchair is characterized by comprising a cushion assembly (1), leg supports (2) arranged on the front side of the cushion assembly (1), a backrest (3) arranged on the rear side of the cushion assembly (1), a control component (41), and a control component, wherein the leg supports (2) and the backrest (3) are rotatably connected with the cushion assembly (1), the rotation angles of the leg supports (2) and the backrest (3) can be respectively driven and adjusted by a first rotating motor (21) and a second rotating motor (31), and the control component (41) can control the rotation speeds and the rotation directions of the first rotating motor (21) and the second rotating motor (31); the cushion assembly (1) comprises a seat plate (11), wherein a groove (12) is formed in the seat plate (11), the groove (12) extends in the horizontal direction and penetrates through two opposite sides of the seat plate (11), a cushion plate (13) is connected in the groove (12) in a sliding mode, and the cushion plate (13) can be controlled to extend out of or be contained in the groove (12); the seat cushion assembly is characterized by further comprising a base (5), wherein a first direction position adjusting assembly (51) is arranged on the base (5), the position of the seat cushion assembly (1) in a first direction can be adjusted through the first direction position adjusting assembly (51), and the first direction is a horizontal direction; the first direction position adjusting component (51) comprises a second electric push rod (511) fixedly connected with the base (5) and a support (6) connected to an extending rod of the second electric push rod (511), a second direction position adjusting component (52) is arranged on the support (6), the position of the cushion component (1) in a second direction can be adjusted by the second direction position adjusting component (52), and the second direction is a horizontal direction and is vertical to the first direction; the second direction position adjusting assembly (52) comprises a supporting column (7), a rotary driving assembly (53) is arranged on the supporting column (7), and the rotary driving assembly (53) can drive the cushion assembly (1) to rotate around the central line of the supporting column (7).

2. The wheelchair as claimed in claim 1, wherein two first electric push rods (14) are further arranged in the groove (12), and the free ends of the extending rods of the two first electric push rods (14) are respectively connected with the base plate (13) to drive the base plate (13) to extend out or be accommodated in the groove (12).

3. The wheelchair according to claim 2, characterized in that a stopper (121) is provided at the notch of the groove (12), a stopper (131) is provided on the pad (13), and the stopper (121) can contact the stopper (131) when the pad (13) is controlled to extend out of the groove (12).

4. The wheelchair according to claim 1, characterized in that the second direction position adjustment assembly (52) further comprises a third rotary motor (521) fixedly connected with the support (6), and the support column (7) is screwed on a threaded rotating shaft (522) of the third rotary motor (521).

5. The wheelchair according to claim 4, characterized in that the rotary drive assembly (53) comprises a fourth rotary motor (531), the end of the rotary shaft of the fourth rotary motor (531) is connected with the bottom side of the seat plate (11) through a seat plate connection column (111).

6. The wheelchair according to claim 5, characterized in that a seat plate positioning rod (112) is further arranged on the bottom side surface of the seat plate (11), an annular sliding groove (71) is formed on one side of the supporting column (7) facing the seat plate (11), and the tail end of the seat plate positioning rod (112) is arranged in the annular sliding groove (71).

7. Wheelchair according to any one of claims 1 to 6, characterized in that the base (5) has front running wheels (81) and rear running wheels (82), the front running wheels (81) and/or the rear running wheels (82) being drivable by a fifth rotary electric motor (83).