CN217310890U

CN217310890U - Wheelchair with high comfort and trafficability

Info

Publication number: CN217310890U
Application number: CN202220652532.3U
Authority: CN
Inventors: 肖杰
Original assignee: Anhui Jingran Machinery Technology Co ltd
Current assignee: Anhui Jingran Machinery Technology Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-08-30
Anticipated expiration: 2032-03-24

Abstract

The utility model relates to the technical field of wheelchairs, in particular to a high-comfort and passable wheelchair; the front lower end of the wheelchair frame is rotatably connected with a connecting rod damping fork frame, the front guide wheel is rotatably connected to the lower end of the connecting rod damping fork frame, the connecting rod damping fork frame comprises a connecting body which is rotatably connected with the wheelchair frame, the lower end of the connecting body is connected with a beam plate, two triangular pieces which are symmetrical front and back and are integrated are arranged below the beam plate, the left end and the right end of the front side and the rear side of the beam plate are both rotatably connected with a connecting rod, the lower end of the connecting rod is rotatably connected with the end part of the triangular piece, a piston damping mechanism is arranged between the triangular piece and the connecting body or the beam plate, and the outer side surface of the triangular piece is connected with the fork frame; the utility model discloses connecting rod shock attenuation crotch at leading wheel and wheelchair frame setting makes the leading wheel have great buffering space at the in-process of traveling, makes it have better trafficability characteristic and shock attenuation process more smooth-going, and the travelling comfort is better.

Description

Wheelchair with high comfort and trafficability

Technical Field

The utility model relates to a wheelchair technical field specifically discloses a wheelchair of high travelling comfort and trafficability characteristic.

Background

The wheelchair is an indispensable tool for lower limb handicapped people and old and weak people to ride instead of walk. The wheelchair on the market at present comprises four main parts of a wheelchair frame, wheels, a brake device and a backrest, wherein the wheels comprise rear driving wheels and front guide wheels.

For example, the invention patent with application number 2017107302453 discloses a wheelchair, which comprises a chair frame mechanism and two pedal mechanisms, wherein the chair frame mechanism comprises a chair frame body and two foot rods arranged at the front side of the chair frame body, the pedal mechanisms are respectively arranged on the foot rods, the pedal mechanisms can rotate and position between a treading position and a swinging position relative to the respective foot rods, and comprise pivot units which can move up and down and rotate and are pivoted and sleeved on the respective foot rods, positioning units which are arranged on the outer surfaces of the respective foot rods in a protruding way and are embedded and clamped in the pivot units, and pedal units arranged on the pivot units; the wheelchair disclosed by the invention is a common wheelchair structure in the market at present, is convenient and safe to use, but the front guide wheel in the wheelchair directly connects the auxiliary wheel (namely the front guide wheel) through the foot lever, so that no damping and buffering space exists, and the wheelchair is poor in comfort and trafficability when meeting the ditch sill in the driving process. In addition, although some guide wheel frames on wheelchairs in the market are connected through springs and have a certain buffering and damping effect, the buffering space is small, the damping process is stiff, and the stability of the guide wheels connected through the springs is poor. Therefore, to the problem that the existing wheelchair is poor in trafficability and not high in comfort level in the driving process, the wheelchair with high comfort level and trafficability level, which can effectively solve the technical problems, is provided in the application.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems of poor passing ability and low comfort degree of the existing wheelchair in the running process, and designs the wheelchair with high comfort and passing ability.

The utility model discloses a realize through following technical scheme:

a wheelchair with high comfort and trafficability comprises a wheelchair frame, a chair frame backrest, a rear driving wheel, a front guide wheel, a foot bracket and a brake system, wherein the front lower end of the wheelchair frame is rotatably connected with a connecting rod damping fork frame, and the front guide wheel is rotatably connected with the lower end of the connecting rod damping fork frame;

the connecting rod shock absorption fork frame comprises a connecting body connected with the wheelchair frame in a rotating mode, the lower end of the connecting body is connected with a beam plate, two triangular pieces which are symmetrical and integrated are arranged below the beam plate, the left end and the right end of the front side and the right end of the rear side of the beam plate are connected with a connecting rod in a rotating mode, the lower end of the connecting rod is connected with the end portions of the triangular pieces in a rotating mode, a piston shock absorption mechanism is arranged between the triangular pieces and the connecting body or the beam plate, the outer side face of each triangular piece is connected with a fork frame, and a front guide wheel is connected to the lower end of the fork frame in a rotating mode.

As a first design scheme of the scheme, the connecting body comprises a piston cylinder connected with the beam plate, a longitudinal rod is connected to a triangular piece located right below the piston cylinder, a movable connecting piece is connected to the longitudinal rod, the piston damping mechanism comprises a piston rod connected with the movable connecting piece, and a sealing piston is connected to the top end, extending into the piston cylinder, of the piston rod.

As a second design scheme of the above scheme, the connecting body includes a vertical connecting rod connected with the beam plate, the piston damping mechanism is a piston cylinder device, the lower end of the piston cylinder device is rotatably connected with the side face of the triangular piece, and the upper end of the piston cylinder device is rotatably connected with the side face of the beam plate.

As a further arrangement of the above scheme, a connecting plate is connected between the two connecting rods at one side far away from the connecting body; the arrangement of the connecting plates enables the two connecting rods to rotate synchronously.

As a further arrangement of the above scheme, the upper end of the backrest of the chair frame is connected with a handle extending outwards; the arranged handle is convenient for pushing the whole wheelchair, and the embodiment of the humanized arrangement is realized.

Has the advantages that:

the utility model discloses a wheelchair which is based on the prior art, the connecting rod damping fork frame arranged on the guide wheel and the wheelchair frame improves the problems of the prior wheelchair in the form process, and the guide wheel has larger buffer space in the driving process due to the special structural design of the connecting rod damping fork frame, so that the wheelchair has better trafficability; simultaneously can make the shock attenuation process more smooth-going through the piston damper who sets up, the travelling comfort is better, and the structural design of connecting rod shock attenuation crotch can be at the wheelchair in-process of traveling moreover, and the wire wheel no matter turns to or the in-process of shock attenuation buffering all has higher stability, and its actual improvement effect is comparatively excellent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a front view plane of the present invention;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1;

FIG. 3 is a schematic diagram of a first angular perspective structure of the link damping fork of the present embodiment 1;

FIG. 4 is a schematic diagram of a second angular perspective structure of the link damping fork of the present embodiment 1;

fig. 5 is a schematic perspective view of a link damping fork in the embodiment 2.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but 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.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 to 5, in conjunction with the embodiments.

Example 1

The embodiment 1 discloses a wheelchair with high comfort and passing performance, which comprises a wheelchair frame 100, a wheelchair frame backrest 200, a rear driving wheel 300, a front guide wheel 400, a foot bracket 500 and a braking system (not shown in the figure), wherein the wheelchair frame 100, the wheelchair frame backrest 200, the rear driving wheel 300, the foot bracket 500 and the braking system in the embodiment are the same as the existing wheelchair structure (refer to the attached drawing 1), the wheelchair frame backrest 200 is arranged at the right end of the wheelchair frame 100, and a handle 201 is arranged at the upper end of the wheelchair frame backrest 200 and extends rightwards. The rear driving wheels 300 are rotatably provided on the wheelchair frame 100 below the seat back 200, and outer rings are connected to the outer surfaces of the rear driving wheels 300. The foot bracket 500 is connected to the left lower end of the wheelchair frame 100, and the angle between the foot bracket 500 and the seat cushion can be controlled between 90-160 degrees, and the angle of the foot bracket 500 can be adjusted according to the requirement of a user.

The embodiment 1 is different from the existing wheelchair and referring to fig. 2, a rotary connector 101 is fixedly provided on a wheelchair frame 100 below a foot bracket 500, a connecting rod shock-absorbing fork 600 is rotatably connected in the rotary connector 101, and a front guide wheel 400 is rotatably connected to the lower end of the connecting rod shock-absorbing fork 600.

Specifically, referring to fig. 3 and 4, the structure of the connecting rod damping fork 600 includes a piston cylinder 601 with an opening at the lower end, a connecting shaft 602 connected with the rotary connector 401 is connected to the upper surface of the piston cylinder 601, a beam plate 603 obliquely arranged is connected to the lower end of the piston cylinder 601, two triangular plates 604 symmetrical front and back are arranged below the beam plate 603, the ends of the two triangular plates 604 are connected into a whole through a longitudinal column, a longitudinal rod 605 is connected between the two triangular plates 604 directly below the beam plate 603, a movable connecting member 612 is rotatably connected in the middle of the longitudinal rod 605, a piston rod 606 extending into the piston cylinder 601 is connected to the movable connecting member 612, and a sealing piston (not shown) matched with the piston cylinder 601 is connected to the top end of the piston rod 606. The two ends of the front side surface and the rear side surface of the beam plate 603 are both connected with connecting rods 607, and the lower ends of the four connecting rods 607 are respectively connected with the two ends of the outer side surface of the triangular plate 604 in a rotating way, so that a four-connecting-rod structure similar to a square is formed. A vertically downward fork bar 608 is connected to a lower end of an outer surface of each of the triangular plates 604, and the front guide wheel 400 is rotatably connected to lower ends of the two fork bars 608 through a wheel axle. In addition, in order to increase the synchronism between the two links 607 at the right end, a connection plate 611 is further connected between the two links 607.

Example 2

Embodiment 2 also discloses a wheelchair having high comfortableness and passing-through based on embodiment 1, which is the same as embodiment 1 but not explained again, except that the piston device of the connecting rod shock-absorbing fork 600 of embodiment 2 is an external one.

Referring to fig. 5, the link damping fork 600 includes a vertical connecting rod 609, and a connecting shaft 602 thereof is connected to an upper end of the vertical connecting rod 609. The lower end of the vertical connecting rod 609 is connected with a beam plate 603 which is obliquely arranged, two triangular plates 604 which are symmetrical front and back are arranged below the beam plate 603, and the end parts of the two triangular plates 604 are connected into a whole through a longitudinal column. The two ends of the front side surface and the rear side surface of the beam plate 603 are both connected with connecting rods 607, and the lower ends of the four connecting rods 607 are respectively connected with the two ends of the outer side surface of the triangular plate 604 in a rotating way, so that a four-connecting-rod structure similar to a square is formed. A vertically downward fork bar 608 is connected to a lower end of an outer surface of each of the triangular plates 604, and the front guide wheel 400 is rotatably connected to lower ends of the two fork bars 608 through a wheel axle. In the embodiment 2, a piston cylinder device 610 is rotatably connected to the outer surface of the triangular plate 604, and the upper end of the piston cylinder device 610 is rotatably connected to the side surface of the beam plate 603.

In summary, in the wheelchair disclosed in embodiments 1 and 2, the front guide wheel 400 is connected to the wheelchair frame 100 through the connecting rod damping fork 600, and due to the structural design of the connecting rod damping fork 600, on one hand, a larger damping space is provided, so that the whole wheelchair has a better trafficability during the driving process, and due to the structural design of the piston cylinder, the damping process is smoother and more comfortable.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A wheelchair with high comfort and trafficability characteristic comprises a wheelchair frame, a chair frame backrest, a rear driving wheel, a front guide wheel, a foot bracket and a brake system, and is characterized in that the front lower end of the wheelchair frame is rotatably connected with a connecting rod damping fork frame, and the front guide wheel is rotatably connected with the lower end of the connecting rod damping fork frame;

2. The wheelchair with high comfort and passability as claimed in claim 1, wherein the connecting body comprises a piston cylinder connected with the beam plate, a longitudinal rod is connected to the triangular piece right below the piston cylinder, a movable connecting piece is connected to the longitudinal rod, the piston damping mechanism comprises a piston rod connected with the movable connecting piece, and a sealing piston is connected to the top end of the piston rod extending into the piston cylinder.

3. The wheelchair of claim 1 wherein the connecting members comprise vertical connecting rods connected to the beam plates, the piston damping mechanism is a piston cylinder device, and the lower end of the piston cylinder device is rotatably connected to the side of the triangle and the upper end is rotatably connected to the side of the beam plates.

4. The high comfort and passable wheelchair of claim 1 wherein a connecting plate is connected between the two links on the side remote from said connecting body.

5. The high comfort and passable wheelchair of claim 1 wherein said frame back has an outwardly extending handle attached to an upper end thereof.