CN108836658B

CN108836658B - Shock attenuation wheelchair

Info

Publication number: CN108836658B
Application number: CN201810730180.7A
Authority: CN
Inventors: 张月玲; 吴艳芳; 张风莲; 杨敏
Original assignee: Individual
Current assignee: Zhang Yueling
Priority date: 2018-07-05
Filing date: 2018-07-05
Publication date: 2020-05-26
Anticipated expiration: 2038-07-05
Also published as: CN108836658A

Abstract

The invention provides a damping wheelchair which comprises a wheelchair frame, a seat, shear type damping mechanisms, rear wheels, front wheel damping mechanisms, side plates, wheel frames and damping springs I, wherein the two side plates are oppositely arranged on two sides of the wheelchair frame, a pair of rear wheels are respectively and movably arranged inside the two side plates through the two wheel frames, the damping springs I are arranged between the wheel frames and the side plates, the seat is movably arranged on the wheelchair frame, the two shear type damping mechanisms are arranged on the lower side of the seat, and the two front wheel damping mechanisms are oppositely arranged on the wheelchair frame. Carry out the shock attenuation through set up a pair of formula damper of cutting below the seat, adopt multistage absorbing mode to reach the purpose that increases the shock attenuation effect, weaken the vibrations that come from the wheel through front wheel damper to and when the front wheel met unevenness's road surface at the in-process of marcing, the front wheel can cushion by inside shrink, and then reduces the impact, and the shrink of front wheel is favorable to advancing of wheelchair when meetting high lower ladder.

Description

Shock attenuation wheelchair

Technical Field

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

Background

At present, with the continuous improvement of living standard, the service life of people is longer and longer, and people pursue high-quality life. In particular, the disabled, the patient and the old and the weak move indoors and outdoors, and the wheelchair is needed to be used by the disabled, the patient and the old and the weak, and most of the wheelchairs used by people only use the driving force of the wheelchair or the driving force of the people behind the wheelchair as the power to move. However, the wheelchair solves the problems of the disabled and the old and the weak that the disabled and the old are comfortable to go out, so that the wheelchair with the damping function can effectively solve the problem of jolting when the wheelchair encounters uneven road surfaces or poor road surfaces.

The publication No. CN108078698A provides a cushioning and damping mechanism for a walk-assisting wheelchair, which comprises a bottom plate, wherein the upper surface of the bottom plate is provided with a cushion, the front side and the rear side of the upper surface of the bottom plate are respectively provided with a side plate, the left side of the upper surface of the bottom plate is provided with a back plate, the right side of the back plate is provided with a back cushion, the right side of the bottom plate is connected with the top end of a connecting rod, the bottom end of the connecting rod is connected with a pedal, the left side of the bottom plate is connected with the top end of a second damper, the bottom end of the second damper is connected with a fixed plate, the outer side of the second damper is provided with a second damping spring, the bottom surface of the fixed plate is provided with a rotating shaft, the rotating shaft is provided with a rear wheel, the rear wheel is rotatably connected with the rotating shaft, the damping mechanism is provided with, further, the shock absorption cannot be performed well, and the shock absorption mechanism only uses the wheel portion to absorb shock, and cannot absorb shock on the seat surface.

Disclosure of Invention

The invention aims to provide a damping wheelchair to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a shock attenuation wheelchair, includes wheelchair frame, seat, cuts formula damper, rear wheel, front wheel damper, curb plate, wheel carrier and damping spring I, and two blocks of curb plates opposition settings are in the both sides of wheelchair frame, and are a pair of the rear wheel is respectively through two wheel carrier movable mounting is equipped with damping spring I between wheel carrier and the curb plate in two blocks of curb plates, wherein:

seat movable mounting is equipped with two on the wheelchair frame cut formula damper, two the front wheel damper is opposite to be installed on the wheelchair frame, and front wheel damper includes universal wheel, linking arm I, sleeve, attenuator, base, slider I, linking arm II and damping spring II, the universal wheel passes through linking arm I and rotates and install on the sleeve, sleeve movable mounting is on the back shaft of wheelchair frame bottom, attenuator one end is installed on the wheelchair frame through the round pin axle, the other end is installed on linking arm I through the round pin axle, base fixed mounting is in the bottom of wheelchair frame, I movable mounting of slider is equipped with a damping spring II in the base between slider I and the base, be connected through linking arm II between sleeve and the slider I.

Preferably, one end of the connecting arm I is welded on the universal wheel, the other end of the connecting arm I is installed on the sleeve through a pin shaft, one end of the connecting arm II is installed on the sleeve through a pin shaft, and the other end of the connecting arm II is installed on the sliding block I through a pin shaft.

Preferably, the shear type damping mechanism comprises supports, two sliding blocks II, a return spring and connecting rods, the two supports are oppositely arranged, one support is fixedly arranged on the wheelchair frame, the other support is fixedly arranged at the bottom of the seat, the two sliding blocks II are movably arranged in the supports, the return springs are respectively arranged between the sliding blocks II and the supports, the middle parts of the two connecting rods are in cross connection through pin shafts, and the two ends of the connecting rods are respectively in rotary connection with the sliding blocks II in the oppositely arranged supports.

Preferably, the two wheel carriers are respectively and movably installed in the two side plates, a damping spring I is respectively arranged between the upper end surface and the lower end surface of each wheel carrier and the side plates, and a rotating shaft on the rear wheel penetrates through the two wheel carriers.

Compared with the prior art, the invention has the beneficial effects that:

1. the pair of shear type shock absorption mechanisms are arranged below the seat to absorb shock, and the aim of enhancing the shock absorption effect is fulfilled by adopting a multi-stage shock absorption mode.

2. The front wheel damping mechanism is used for weakening vibration from wheels, and when the front wheels meet uneven road surfaces in the advancing process, the front wheels can contract inwards to buffer, so that impact is reduced, and when the front wheels meet steps with lower heights, the contraction of the front wheels is beneficial to the advancing of the wheelchair.

Drawings

FIG. 1 is a three-dimensional schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a part of the mechanism of the front wheel shock absorbing mechanism of the present invention;

FIG. 3 is a three-dimensional schematic view of a scissors-type shock absorbing mechanism according to the present invention;

fig. 4 is an enlarged view of a portion a in fig. 1.

In the figure: the damping device comprises a 1-wheel chair frame, a 2-seat chair, a 3-shear type damping mechanism, a 4-rear wheel, a 5-front wheel damping mechanism, a 6-side plate, a 7-wheel frame, 8-damping springs I and 11-supporting shaft, a 31-bracket, a 32-slider II, a 33-return spring, a 34-connecting rod, a 51-universal wheel, 52-connecting arms I and 53-sleeve, a 54-damper, a 55-base, 56-slider I, 57-connecting arms II and 58-damping spring II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

Example (b):

referring to fig. 1 to 4, the present invention provides a technical solution:

the utility model provides a shock attenuation wheelchair, includes wheelchair frame 1, seat 2, cuts formula damper 3, rear wheel 4, front wheel damper 5, curb plate 6, wheel carrier 7 and damping spring I8, wherein:

two side edges of the seat 2 are respectively matched with a side handle of the wheelchair frame 1, so that a moving pair is formed between the seat 2 and the wheelchair frame 1, two shear type shock absorption mechanisms 3 are arranged at the lower side of the seat 2, wherein the scissor type shock absorption mechanism 3 comprises a bracket 31, a sliding block II 32, a return spring 33 and a connecting rod 34, the two brackets 31 are oppositely arranged, one support 31 is fixedly arranged on the wheelchair frame 1 through a bolt, the other support is fixedly arranged at the bottom of the seat 2 through a bolt, two sliding blocks II 32 are movably arranged in the support 31, a return spring 33 is respectively arranged between each sliding block II 32 and the support 31, wherein, two ends of the reset spring 33 are respectively fixedly connected with the sliding block II 32 and the bracket 31, the middle parts of the two connecting rods 34 are in cross connection through a pin shaft, two ends of the connecting rods 34 are respectively rotatably connected with the sliding blocks II 32 in the bracket 31 which are oppositely arranged, and then the two connecting rods 34 drive the sliding block II 32 to move along the bracket 31 when rotating along the pin shaft in the middle; two front wheel shock absorption mechanisms 5 are oppositely arranged on a wheelchair frame 1, wherein the front wheel shock absorption mechanisms 5 comprise universal wheels 51, a connecting arm I52, a sleeve 53, a damper 54, a base 55, a sliding block I56, a connecting arm II 57 and a shock absorption spring II 58, one end of the connecting arm I52 is welded on the universal wheels 51, the other end of the connecting arm I52 is arranged on the sleeve 53 through a pin shaft, the angle between the universal wheels 51 and the connecting arm I52 is fixed, the bottom surface line of the universal wheels 51 is always parallel to the wheelchair frame 1, the sleeve 53 is movably arranged on a supporting shaft 11 at the bottom of the wheelchair frame 1, one end of the damper 54 is arranged on the wheelchair frame 1 through a pin shaft, the other end of the damper is arranged on the connecting arm I52 through a pin shaft, two ends of the damper 54 are hinged, the base 55 is fixedly arranged at the bottom of the wheelchair frame 1 through bolts, the sliding block I56 is movably arranged in the base 55, the two ends of the damping spring II 58 are fixedly connected with the sliding block I56 and the base 55 respectively, one end of the connecting arm II 57 is installed on the sleeve 53 through a pin shaft, the other end of the connecting arm II 57 is installed on the sliding block I56 through a pin shaft, and then the two ends of the connecting arm II 57 are hinged;

two blocks of curb plates 6 are the opposite setting in the both sides of wheelchair frame 1, wherein curb plate 6 passes through bolt fixed mounting on wheelchair frame 1, two wheel carriers 7 are movable mounting respectively in two blocks of curb plates 6, be equipped with a damping spring I8 between the upper and lower terminal surface of wheel carrier 7 and the curb plate 6 respectively, wherein fixed connection between damping spring I8 and wheel carrier 7 and the curb plate 6, two wheel carriers 7 are run through in the pivot on the rear wheel 4, wherein the pivot on the rear wheel 4 runs through the part of wheel carrier 7 for interference fit, and then rear wheel 4 fixed mounting is on wheel carrier 7.

The working principle of the invention is as follows: when the vehicle runs on a bumpy road section, the rear wheel 4 jumps up and down to drive the wheel carrier 7 to move up and down along the side plate 6, the rear wheel 4 achieves a damping effect under the damping action of the damping spring I8, the angle between the connecting rods 34 which are installed in the scissor type damping mechanism 3 in a crossed mode changes in the bumping process, the sliding block II 32 moves along the support 31, the damping effect is achieved under the action of the return spring 33, the damping effect is achieved under the seat 2, the universal wheel 51 can swing back and forth in the bumping process, part of impact force is transmitted into the damper 54 through the connecting arm I52 in the swinging process, the damper 54 buffers the vibration, the connecting arm I52 transmits the other part of impact to the sleeve 53, the sleeve 53 moves up and down along the supporting shaft 11 to drive the connecting arm II 57 to move, the connecting arm 57 II pushes the sliding block I56 to move back and forth along the base 55, and the shock absorption is carried out under the buffer action of the shock absorption spring II 58.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shock attenuation wheelchair, includes wheelchair frame (1), seat (2), cuts formula damper (3), rear wheel (4), front wheel damper (5), curb plate (6), wheel carrier (7) and damping spring I (8), and two blocks of curb plate (6) opposition sets up in the both sides of wheelchair frame (1), and is a pair of rear wheel (4) are respectively through two wheel carrier (7) movable mounting is equipped with damping spring I (8), its characterized in that between wheel carrier (7) and curb plate (6) in two blocks of curb plate (6):

the seat (2) is movably arranged on a wheelchair frame (1), two shear type shock absorption mechanisms (3) are arranged on the lower side of the seat (2), the two front wheel shock absorption mechanisms (5) are oppositely arranged on the wheelchair frame (1), each front wheel shock absorption mechanism (5) comprises a universal wheel (51), a connecting arm I (52), a sleeve (53), a damper (54), a base (55), a slider I (56), a connecting arm II (57) and a shock absorption spring II (58), the universal wheel (51) is rotatably arranged on the sleeve (53) through the connecting arm I (52), the sleeve (53) is movably arranged on a supporting shaft (11) at the bottom of the wheelchair frame (1), one end of the damper (54) is arranged on the wheelchair frame (1) through a pin shaft, the other end of the damper is arranged on the connecting arm I (52) through a pin shaft, the base (55) is fixedly arranged at the bottom of the wheelchair frame (1), the sliding block I (56) is movably mounted in the base (55), a damping spring II (58) is arranged between the sliding block I (56) and the base (55), and the sleeve (53) is connected with the sliding block I (56) through a connecting arm II (57).

2. The shock absorbing wheelchair as claimed in claim 1, wherein: one end of the connecting arm I (52) is welded on the universal wheel (51), the other end of the connecting arm I is installed on the sleeve (53) through a pin shaft, one end of the connecting arm II (57) is installed on the sleeve (53) through a pin shaft, and the other end of the connecting arm II (57) is installed on the sliding block I (56) through a pin shaft.

3. The shock absorbing wheelchair as claimed in claim 1, wherein: cut formula damper (3) and include support (31), slider II (32), reset spring (33) and connecting rod (34), two support (31) are placed in opposition, and one of them support (31) fixed mounting is on wheelchair frame (1), another fixed mounting is in seat (2) bottom, and movable mounting is two in support (31) slider II (32), be equipped with one reset spring (33) respectively between slider II (32) and support (31), two the middle part of connecting rod (34) is through round pin axle cross connection, and the both ends of connecting rod (34) are connected with slider II (32) rotation in the support (31) that the opposition was placed respectively.

4. The shock absorbing wheelchair as claimed in claim 1, wherein: the two wheel carriers (7) are movably arranged in the two side plates (6) respectively, a damping spring I (8) is arranged between the upper end surface and the lower end surface of each wheel carrier (7) and each side plate (6), and a rotating shaft on the rear wheel (4) penetrates through the two wheel carriers (7).