CN113558885A

CN113558885A - wheelchair

Info

Publication number: CN113558885A
Application number: CN202110932689.1A
Authority: CN
Inventors: 苏再军; 默辰星
Original assignee: Shaoyang University
Current assignee: Shaoyang University
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-10-29

Abstract

The present invention provides a wheelchair, which includes a seat and a seat cushion, the seat has front legs for supporting the seat cushion, the front legs are provided with receiving grooves, the receiving grooves extend to the seat cushion, the A rotating rod is arranged in the receiving groove, one end of the rotating rod is rotatably connected to the front chair leg, and the other end of the rotating rod is fixedly connected to the seat cushion. The wheelchair also includes a driving device fixed to the seat. The driving device drives the seat cushion to rotate around the connection between the rotating rod and the front chair leg. While the wheelchair provided by the present invention helps the user to get up, the front end of the seat cushion will drop, so that the user's feet can slowly land on the ground when getting up, buffer the pressure of the user's weight on the feet, so that the user can land stably, thereby improving the user's safety Security to get up.

Description

Wheel chair

Technical Field

The invention relates to the technical field of wheelchair instruments, in particular to a wheelchair.

Background

Wheelchair users are mostly people with inconvenient legs and feet, such as disabled people, patients or old people, and usually need to sit on a wheelchair to walk.

When a wheelchair user gets up, the center of gravity moves upwards, large leg strength is needed to overcome the weight of the body, and the legs and the feet of the wheelchair user are inconvenient; among the prior art, a lot of intelligent wheelchairs help the user to stand up through overturning the cushion, but when the user sat on the wheelchair, the user's foot often can leave ground and be suspended in the air, and the wheelchair has very big impact force when helping the user to stand up in-process foot to fall to the ground, can lead to the user to stand unstably, can fall even, and consequently the user is unsafe when standing up.

Therefore, there is still a need to provide a new wheelchair to solve the above problems.

Disclosure of Invention

In view of the above problems in the prior art, the present invention provides a wheelchair that helps a user to get up and simultaneously relieves impact force when the user falls to the ground.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a wheelchair, its includes seat and cushion, the seat has the support the preceding chair leg of cushion, preceding chair leg is equipped with the accepting groove, the accepting groove extends to the cushion, be equipped with the dwang in the accepting groove, the one end of dwang with preceding chair leg rotatable coupling, its other end with cushion fixed connection, the wheelchair still including install in the drive arrangement of seat, the drive arrangement drive the cushion winds the dwang with the junction of preceding chair leg rotates.

Preferably, the driving means includes:

one end of the driving rod is rotatably connected with the seat, and the other end of the driving rod is slidably connected with the seat cushion;

the driving assembly is fixedly arranged on the seat, the driving assembly is rotatably connected with the driving rod, and the joint of the driving assembly and the driving rod is positioned between the two ends of the driving rod.

Preferably, the actuating lever with but the cushion passes through guide rail set spare sliding connection, guide rail set spare including be fixed in the slide rail of cushion bottom surface, with slide rail sliding connection's slider and be fixed in the slider is kept away from the connecting portion of slide rail one side, connecting portion with actuating lever rotatable coupling.

Preferably, the driving assembly comprises a driver and a push rod connected with the driver, and the push rod is rotatably connected with the driving rod.

Preferably, the seat has a first cross bar disposed adjacent to the front leg, and the end of the driving rod remote from the seat cushion is rotatably connected to the first cross bar.

Preferably, the seat further has a second crossbar, the actuator being fixed to the second crossbar.

Preferably, the dwang is kept away from the one end of cushion runs through and is equipped with first through-hole, be equipped with in the accepting groove and be fixed in the axis of rotation of preceding chair leg, the axis of rotation passes first through-hole so that the dwang with preceding chair leg rotatable coupling.

Preferably, the driving rod is provided with a second through hole, and the first cross rod passes through the second through hole so that the driving rod is rotatably connected with the first cross rod.

Preferably, the driving rod is further provided with a third through hole, a pin shaft is fixedly arranged on the push rod, and the pin shaft penetrates through the third through hole so that the driving rod and the push rod can be rotatably connected.

Preferably, the driving rod is further provided with a fourth through hole, the connecting portion is fixedly provided with a pin column, and the pin column penetrates through the fourth through hole so that the driving rod and the connecting portion can be rotatably connected.

Compared with the prior art, the invention mainly has the following beneficial effects:

the wheelchair provided by the invention helps a user to get up, and meanwhile, the front end of the cushion can descend, so that the feet of the user can slowly land when getting up, the pressure of the weight of the user on the feet is buffered, the user can stably land, and the safety of the user when getting up is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic, pictorial illustration of a preferred embodiment of a wheelchair in accordance with the present invention;

FIG. 2 is a partial schematic structural view of the wheelchair of FIG. 1;

figure 3 is an exploded view of the wheelchair of figure 1.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 3, a wheelchair 100 according to an embodiment of the present invention includes a seat 1, a seat cushion 2 mounted on the seat 1, and a driving device 3 mounted on the seat 1 and configured to drive the seat cushion 2 to rotate.

The seat 1 is provided with a front chair leg 11 and a rear chair leg 12 which support the cushion 2, the front chair leg 11 is fixedly provided with a universal wheel 13 so as to realize the turning of the wheelchair, and the rear chair leg 12 is provided with a rear wheel 14.

In this embodiment, the seat 1 is further fixedly provided with a motor 4 connected to the rear wheel 14 for driving the rear wheel 14 to rotate, and the motor 4 drives the rear wheel 11 to rotate so as to enable the wheelchair 100 to move forward or backward.

The front legs 11 are provided with receiving grooves 111, the receiving grooves 111 extend to the seat cushion 2, the receiving grooves 111 are provided with rotating rods 113, one end of each rotating rod 113 is rotatably connected with the front legs 11, the other end of each rotating rod 113 is fixedly connected with the seat cushion 2, and the driving device 3 drives the seat cushion 2 to rotate around the connecting position of the rotating rod 113 and the front legs 111. When the seat cushion 2 rotates, one end of the seat cushion 2 close to the front chair legs 11 descends, and one end of the seat cushion close to the rear chair legs 12 ascends, so that a user can get up, and because one end of the seat cushion 21 close to the front chair legs 11 descends, the feet of the user can slowly land when getting up, the pressure of the weight of the user on the feet is buffered, the user can stably land, and the rising safety of the user is improved.

In this embodiment, a first through hole 115 is formed through an end of the rotating rod 113 away from the seat cushion 2, a rotating shaft 117 fixed to the front leg 11 is disposed in the receiving groove 111, and the rotating shaft 117 passes through the first through hole 115 so that the rotating rod 113 and the front leg 11 can be rotatably connected. It should be noted that, in other embodiments, a bearing fixed on the inner wall of the first through hole 115 may also be disposed on the rotating rod 113, so as to reduce the friction force applied to the rotating rod 113 during the rotating process; alternatively, the rotating rod 113 and the front leg 11 may be rotatably connected by a hinge or a hinge.

The driving device 3 includes a driving rod 31 and a driving assembly 33 fixed to the seat 1. One end of the driving rod 31 is rotatably connected to the seat 1, and the other end thereof is slidably connected to the seat cushion 2; the driving assembly 33 is rotatably connected to the driving rod 31, and the connection between the driving assembly 33 and the driving rod 31 is located between two ends of the driving rod 31.

In the present embodiment, the driving rod 31 is slidably connected to the seat cushion 2 through the rail assembly 5, the rail assembly 5 includes a slide rail 51 fixed to the bottom surface of the seat cushion 2, a slide block 53 slidably connected to the slide rail 51, and a connecting portion 55 fixed to a side of the slide block 53 away from the slide rail 51, and the connecting portion 55 is rotatably connected to the driving rod 31. In use, the driving assembly 33 drives the driving rod 31 to rotate at an end thereof away from the seat cushion 2 (i.e. an end of the driving rod 31 rotatably connected to the seat 1), so that the other end of the driving rod 31 drives the slider 53 to slide along the slide rail 51 toward the front leg 11, thereby driving the seat cushion 2 to rotate around the joint of the rotating rod 113 and the front leg 111, so that the end of the seat cushion 2 close to the front leg 11 descends, and the end close to the rear leg 12 ascends, thereby helping the user to get up.

The slide rail 51 may be fixed to the bottom surface of the seat cushion 2 by bolts or screws, or may be fixed to the bottom surface of the seat cushion 2 by other means such as welding; the connecting portion 55 may be fixed to the slider 53 by a bolt or a screw, or may be formed integrally with the slider 53.

It should be noted that, in other embodiments, the bottom surface of the seat cushion 2 may not be provided with the rail assembly 5, and a pulley may be provided at an end of the driving rod 31 near the seat cushion 2, so that the pulley is in direct sliding contact with the bottom surface of the seat cushion 2.

As shown in fig. 2 and 3, the seat 1 has a first crossbar 15 disposed near the front leg 11, and an end of the drive lever 31 remote from the seat cushion 2 is rotatably connected to the first crossbar 15. In this embodiment, the driving rod 31 is provided with a second through hole 311, and the first cross bar 15 passes through the second through hole 311 so that the driving rod 31 is rotatably connected with the first cross bar 15. It should be noted that, in other embodiments, the first cross bar 15 may also be provided with a bearing fixed on the inner wall of the second through hole 311, so as to reduce the friction force received by the driving rod 31 during the rotation process.

The driving assembly 33 includes a driver 331 and a push rod 333 connected to the driver 331, the push rod 333 being rotatably connected to the driving rod 31.

In this embodiment, the driver 331 has a screw rod, 333 is sleeved on the screw rod and matches with the screw rod.

As shown in fig. 2, the seat 1 further has a second cross bar 16, and the driver 331 is fixed to the second cross bar 16.

In this embodiment, the driving rod 31 further has a third through hole 313, the push rod 333 is fixedly provided with a pin 335, and the pin 335 passes through the third through hole 313 to rotatably connect the driving rod 31 and the push rod 333. It should be noted that, in other embodiments, the pin 335 may also be provided with a bearing fixed on the inner wall of the third through hole 313, so as to reduce the friction force received by the push rod 333 during the rotation process.

In this embodiment, the driving rod 31 is further provided with a fourth through hole 315, the connecting portion 55 is fixedly provided with a pin 57, and the pin 57 passes through the fourth through hole 315 so that the driving rod 31 and the connecting portion 55 can be rotatably connected. It should be noted that, in other embodiments, the pin 57 may also be provided with a bearing fixed on the inner wall of the fourth through hole 315, so as to reduce the friction force received by the driving rod 31 during the rotation process.

Compared with the prior art, the wheelchair provided by the invention helps a user to stand up, and meanwhile, the front end of the cushion can descend, so that the feet of the user can slowly land when the user stands up, the pressure of the weight of the user on the feet is buffered, the user can stably land, and the safety of the user in standing up is improved.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wheelchair, comprising a seat and a seat cushion, the seat has front legs for supporting the seat cushion, wherein the front legs are provided with receiving grooves, and the receiving grooves extend to the seat cushion , a rotating rod is arranged in the receiving groove, one end of the rotating rod is rotatably connected with the front chair leg, and the other end is fixedly connected with the seat cushion, and the wheelchair also includes a drive installed on the seat The driving device drives the seat cushion to rotate around the connection between the rotating rod and the front chair leg.

2. The wheelchair according to claim 1, wherein the driving device comprises:

a drive rod, one end of which is rotatably connected to the seat, and the other end of which is slidably connected to the seat cushion;

The drive assembly is fixed on the seat, the drive assembly is rotatably connected with the drive rod, and the connection between the drive assembly and the drive rod is located between two ends of the drive rod.

3 . The wheelchair according to claim 2 , wherein the driving rod is slidably connected to the seat cushion through a guide rail assembly, and the guide rail assembly comprises a sliding rail fixed on the bottom surface of the seat cushion, and the sliding rail is connected to the sliding rail. 4 . The sliding block is slidably connected, and the connecting portion is fixed on the side of the sliding block away from the sliding rail, and the connecting portion is rotatably connected with the driving rod.

4 . The wheelchair according to claim 2 , wherein the driving assembly comprises a driver and a push rod connected with the driver, and the push rod is rotatably connected with the driving rod. 5 .

5 . The wheelchair according to claim 2 , wherein the seat has a first crossbar disposed close to the front chair legs, and an end of the driving rod away from the seat cushion is communicable with the first crossbar. 6 . Turn the connection.

6 . The wheelchair according to claim 4 , wherein the seat further has a second crossbar, and the driver is fixed to the second crossbar. 7 .

7 . The wheelchair according to claim 1 , wherein a first through hole is formed through the end of the rotating rod away from the seat cushion, and a rotating shaft fixed to the front chair leg is arranged in the receiving groove. 8 . , the rotating shaft passes through the first through hole so that the rotating rod is rotatably connected with the front chair leg.

8 . The wheelchair according to claim 5 , wherein the driving rod is provided with a second through hole, and the first cross rod passes through the second through hole so that the driving rod and the first cross rod pass through the second through hole. 9 . A crossbar is rotatably connected.

9 . The wheelchair according to claim 4 , wherein the drive rod is further provided with a third through hole, a pin shaft is fixed on the push rod, and the pin shaft passes through the third through hole. 10 . So that the drive rod and the push rod are rotatably connected.

10 . The wheelchair according to claim 3 , wherein a fourth through hole is further provided on the driving rod, a pin is fixed on the connecting portion, and the pin passes through the fourth through hole. 11 . A hole is formed so that the drive rod is rotatably connected with the connecting portion.