CN218852974U

CN218852974U - Wheelchair wheel with buffer function

Info

Publication number: CN218852974U
Application number: CN202221928823.7U
Authority: CN
Inventors: 廖乾猛
Original assignee: Jiaxing Xiaoxiang Medical Instrument Technology Co ltd
Current assignee: Jiaxing Xiaoxiang Medical Instrument Technology Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-04-14
Anticipated expiration: 2032-07-22

Abstract

The utility model provides a wheelchair wheel with buffer function, it has solved wheelchair wheel damping scheduling problem, and it includes the wheel carrier main part, and the connecting rod is installed to wheel carrier main part upper end, and a pair of bracing piece is installed to wheel carrier main part lower extreme, installs wheel components through rotation installation mechanism between the bracing piece lower extreme, is provided with damping mechanism between wheel carrier main part and connecting rod and/or the bracing piece. The utility model has the advantages of good damping effect, stable structure and the like.

Description

Wheelchair wheel with buffer function

Technical Field

The utility model belongs to the technical field of the wheelchair accessory, concretely relates to wheelchair wheel with buffer function.

Background

Wheelchairs are chairs equipped with wheels to help replace walking and are classified into electric and manual folding wheelchairs. The folding wheelchair generally refers to a wheelchair for medical equipment sale, and is roughly in the shape of a chair, and comprises four wheels, wherein the rear wheel is larger, a hand-push wheel is added, a brake is also added on the rear wheel, the front wheel is smaller and is used for steering, and an anti-tilting wheel is added on the rear of the wheelchair. The diameters of the small wheels in front of the wheelchair are 12, 15, 18 and 20cm, and the small wheels with large diameters are easy to pass through small obstacles and special carpets. But the diameter is too large, so that the space occupied by the whole wheelchair is enlarged, and the movement is inconvenient. In the actual use process, the damping system of the wheelchair is usually positioned between a large wheel and a seat, a spring is adopted for buffering and absorbing energy, and a small wheel of the damping system is lack of a corresponding damping mechanism, so that the damping effect of the wheelchair on a fine bumpy road surface is poor. In addition, the conventional universal wheel rotation is inconvenient in the driving process.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent literature discloses a universal wheel steering control system, a robot, a cart, a wheelchair, and a trunk [201621266473.7], which includes a universal wheel, an upper portion of the universal wheel is connected to an electromagnetic clutch, a positioning rotation device is disposed between a stator and a rotor of the electromagnetic clutch, the positioning rotation device includes at least one directional slide way disposed at a lower end portion of the stator, an upper end portion of the rotor is disposed with at least one positioning ball engaged with the directional slide way, the directional slide way is disposed with a limiting groove at least one set position, and the positioning ball automatically rotates to the limiting groove to complete positioning when the stator and the rotor are attracted.

The scheme solves the problem of reversing the universal wheels of the existing wheelchair to a certain extent, but the scheme still has a plurality of defects, such as poor damping effect on a fine bumpy road surface and the like.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, effectual wheelchair wheel with buffer function to tiny road surface damping of jolting.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the wheelchair wheel with the buffering function comprises a wheel carrier main body, wherein a connecting rod is installed at the upper end of the wheel carrier main body, a pair of supporting rods is installed at the lower end of the wheel carrier main body, a roller component is installed between the lower ends of the supporting rods through a rotating installation mechanism, and a vibration damping mechanism is arranged between the wheel carrier main body and the connecting rod and/or the supporting rods. According to the requirements, the wheel carrier main body and the connecting rod and/or the supporting rod are/is provided with the damping mechanism, single-stage or multi-stage damping is adopted for the wheelchair, so that the small wheel of the wheelchair has a good damping effect on a fine bumpy road surface, and the riding comfort of the wheelchair is improved.

In the wheelchair wheel with the buffering function, the vibration damping mechanism comprises a first vibration damping component arranged between the wheel carrier main body and the connecting rod; or the damping assembly comprises a second damping assembly arranged between the wheel carrier main body and the supporting rod. The first vibration damping assembly and the second vibration damping assembly are relatively independent, the installation position of the vibration damping mechanism is selected according to actual needs, and the second vibration damping mechanism is usually selected and matched on the basis of the first vibration damping assembly to realize double vibration damping.

In the wheelchair wheel with a buffering function, the first vibration reduction assembly comprises an elastic vibration reduction piece which is arranged in the wheel carrier main body and connected with the connecting rod, and the second vibration reduction assembly comprises an elastic vibration reduction piece which is arranged in the wheel carrier main body and connected with the supporting rod. The elastic vibration damping piece is hidden and arranged in the wheel carrier main body, the second vibration damping assembly generally installs the elastic vibration damping piece on the wheelchair, and the elastic vibration damping piece is connected with the supporting rod during installation.

In the wheelchair wheel with the buffering function, the elastic vibration damper is any one or combination of a metal rubber vibration damper, a metal vibration damper, a pneumatic vibration damper and a polymer vibration damper. At present, the common elastic vibration damping piece is a pneumatic spring, the size of the elastic vibration damping piece is small, and the elastic vibration damping piece is convenient to assemble into the wheel carrier main body.

In the wheel of the wheelchair with the buffering function, the connecting rod is fixed with the limiting sleeve and is divided into the lower section inserted in the wheel frame main body and the upper section rotationally connected with the wheelchair by the limiting sleeve. The stop collar is fixed on the connecting rod, and the restriction connecting rod is pegged graft at the inside degree of depth of wheel carrier main part, and the stop collar improves the structural stability of connecting rod and wheel carrier main part handing-over department simultaneously.

In foretell wheelchair wheel with buffer function, the wheel carrier main part includes the base of being connected with the connecting rod, and the base has the protection casing that is the arc and relative with wheel components, and the base both sides are provided with downwardly extending respectively and are connected with the bracing piece the supporting leg, and the supporting leg side is opened has the relative bar groove that just link up with wheel components, is connected with the strengthening rib between supporting leg and the protection casing. Wheel carrier main part internal rotation installation wheel components, it rotates with the wheelchair to be connected, realizes the adjustment switching-over of arbitrary circumference angle, and base, protection casing, supporting leg and strengthening rib integrated into one piece wherein adopt injection moulding to guarantee structural strength.

In the wheel of the wheelchair with the buffering function, the rotation installation mechanism comprises the rotating blocks which are respectively arranged at the lower ends of the supporting rods, the rotating blocks are provided with the rotation holes which are oppositely arranged, the rotating shafts penetrate through the rotating holes, the rotating bearings are arranged between the rotating shafts and the roller assemblies, the limiting cylinders are arranged between the rotating bearings and the rotating blocks, the limiting cylinders are sleeved on the rotating shafts in a sliding mode, two ends of each limiting cylinder are respectively abutted against the rotating bearings and the rotating blocks, and the rotating bearings and the rotating blocks are respectively symmetrically arranged relative to the roller assemblies. The rotating block improves the connection strength of the rotating shaft and the supporting rod, the supporting rod is in telescopic connection with the wheel carrier main body and synchronously ascends and descends under the limiting effect of the rotating shaft, and the supporting rod is buffered and energy-absorbed by the elastic damping piece inside.

In the wheelchair wheel with the buffering function, the roller component comprises a wheel hub, a wheel core and spokes are arranged in the wheel hub, a tire is sleeved outside the wheel hub, and mounting grooves for clamping the rotating bearing are formed in two sides of the wheel core. The rolling bearings are arranged on two sides of the roller component and arranged between the hub and the rotating shaft to reduce the rotating friction and ensure the rotating lubricity of the roller component.

In the above wheelchair wheel with a buffering function, the tire is made of rubber or silica gel. The tyre has certain elasticity, plays a further vibration reduction role, is matched with a vibration reduction mechanism to realize multi-stage vibration reduction, and ensures that the small wheel has a better anti-seismic effect on bumpy roads.

In the wheelchair wheel with the buffering function, the rotating block and the supporting rod are integrally formed, and the width and the thickness of the rotating block are larger than the diameter of the supporting rod. The turning block improves the structural strength of the joint of the support rod and the rotating shaft and ensures the vertical stability of the support rod and the rotating shaft.

Compared with the prior art, the utility model has the advantages of: the wheel carrier main body is rotatably provided with a roller component, and at least one stage of damping mechanism is arranged between the roller component and the roller component, so that the small wheel of the wheelchair has a good anti-seismic effect on a fine bumpy road surface; the wheel carrier main body is integrally formed, has higher structural strength and better support stability for the roller assembly; the rotary mounting mechanism realizes the rotary mounting of the roller components, can realize the synchronous lifting of the supporting rods, ensures the working stability of the vibration damping mechanism, and is suitable for the vibration damping and energy absorption of the electric wheelchair in the high-speed traveling process.

Drawings

FIG. 1 is a development view of the present invention;

fig. 2 is a schematic structural view of the wheel carrier main body of the present invention;

fig. 3 is a schematic structural view of the connecting rod of the present invention;

fig. 4 is a schematic structural view of the roller assembly of the present invention;

in the figure, a wheel carrier body 1, a base 11, a protective cover 12, a support leg 13, a strip-shaped groove 14, a reinforcing rib 15, a connecting rod 2, a limit sleeve 21, a lower section 22, an upper section 23, a support rod 3, a rotation mounting mechanism 4, a rotation block 41, a rotation hole 42, a rotation shaft 43, a rotation bearing 44, a limit cylinder 45, a roller assembly 5, a wheel hub 51, a wheel core 52, a spoke 53, a tire 54, a mounting groove 55, a vibration damping mechanism 6, a first vibration damping assembly 61 and a second vibration damping assembly 62 are arranged.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1-4, a wheelchair wheel with a buffer function comprises a wheel carrier body 1, a connecting rod 2 is installed at the upper end of the wheel carrier body 1, a pair of support rods 3 are installed at the lower end of the wheel carrier body 1, a roller assembly 5 is installed between the lower ends of the support rods 3 through a rotating installation mechanism 4, and a damping mechanism 6 is arranged between the wheel carrier body 1 and the connecting rod 2. When the wheelchair travels on a small bumpy road surface, the small wheel at the front end bumps and jumps, the damping mechanism 6 between the wheel carrier main body 1 and the connecting rod 2 absorbs energy in a buffering manner, the damping mechanism 6 is added on the damping system of the original large wheel of the wheelchair, the stability of the wheel seat of the wheelchair is ensured, and the discomfort caused by high-frequency vibration of the wheelchair when the wheelchair travels on a bumpy road surface is reduced.

Specifically, the damping mechanism 6 includes a first damping member 61 provided between the carrier body 1 and the connecting rod 2. The first vibration reduction assembly 61 is arranged inside the wheel carrier body 1, the connecting rod 2 is movably connected with the wheel carrier body 1, and the first vibration reduction assembly 61 absorbs vibration transmitted by the roller assemblies 5 and the connecting rod 2.

Further, the first damping assembly 61 includes an elastic damping member installed in the wheel carrier body 1 and connected with the connecting rod 2. The elastic vibration damping piece is any one or combination of a metal rubber vibration damper, a metal vibration damper, a pneumatic vibration damper and a polymer vibration damper. The wheel carrier main body 1 is usually buffered by a pneumatic spring, is arranged in the wheel carrier main body 1, has a piston rod which is a connecting rod 2 extending to the outside of the wheel carrier main body 1, and can be lifted and adjusted to adjust the relative distance between the wheel carrier main body 1 and the roller assembly 5 to finely adjust the levelness of the wheelchair seat body.

Furthermore, a limit sleeve 21 is fixed on the connecting rod 2, and the connecting rod 2 is divided into a lower section 22 inserted in the wheel carrier body 1 and an upper section 23 connected with the wheelchair in a rotating way by the limit sleeve 21. The limiting sleeve 21 is cubic, the lower end of the limiting sleeve is attached to the upper end of the wheel carrier main body 1, the upper end of the wheel carrier main body 1 is provided with a jack into which the lower section 22 of the connecting rod 2 is inserted, and the upper section 23 of the connecting rod 2 is left with sufficient length to be connected with a wheelchair.

In addition, the wheel carrier main body 1 includes the base 11 of being connected with connecting rod 2, and base 11 has the protection casing 12 that is the arc and relative with

wheel components

5, and 11 both sides of base are provided with downwardly extending respectively and are connected with bracing piece 3 supporting leg 13, and open supporting leg 13 side has the bar groove 14 relative and link up with wheel components 5, is connected with strengthening rib 15 between supporting leg 13 and the protection casing 12. Base 11 and protection casing 12 integrated into one piece, protection casing 12 protect wheel components 5, and its strengthening rib 15 sets up and constitutes the triangular structure between protection casing 12 both sides and supporting leg 13, guarantees supporting leg 13's vertical stability.

Meanwhile, the rotating installation mechanism 4 comprises rotating blocks 41 respectively arranged at the lower ends of the support rods 3, the rotating blocks 41 are provided with rotating holes 42 which are oppositely arranged, rotating shafts 43 penetrate through the rotating holes 42, rotating bearings 44 are arranged between the rotating shafts 43 and the roller assemblies 5, limiting cylinders 45 are arranged between the rotating bearings 44 and the rotating blocks 41, the limiting cylinders 45 are slidably sleeved on the rotating shafts 43, two ends of each limiting cylinder are respectively abutted against the rotating bearings 44 and the rotating blocks 41, and the rotating bearings 44 and the rotating blocks 41 are respectively symmetrically arranged relative to the roller assemblies 5. The central axis of the rotating shaft 43 is horizontally arranged, and the rotating block 41 limits the lifting of the support rod 3.

As can be seen, the roller assembly 5 includes a hub 51, a hub 52 and spokes 53 are disposed inside the hub 51, a tire 54 is sleeved outside the hub 51, and mounting grooves 55 for the rotary bearings 44 to be inserted are formed on two sides of the hub 52.

It is apparent that the tire 54 is made of rubber or silicone. The tire 54 has certain elasticity, has a vibration damping effect, has larger friction force with the ground, and ensures the stability of the wheelchair in the advancing process.

Preferably, the rotating block 41 is integrally formed with the support rod 3, and the width and thickness of the rotating block 41 are both larger than the diameter of the support rod 3. The turning blocks 41 are symmetrically arranged relative to the central vertical plane of the wheel carrier main body 1, and the opposite side is abutted against the limiting barrel 45, so that the distance between the roller assembly 5 and the turning blocks 41 is kept constant, and the roller assembly 5 is always positioned at the center of the turning shaft 43.

Example two

The structure, principle and implementation steps of the present embodiment are similar to those of the present embodiment, except that the damping mechanisms 6 are respectively disposed between the wheel carrier body 1 and the connecting rod 2 and the supporting rod 3, the damping assembly further includes a second damping assembly 62 disposed between the wheel carrier body 1 and the supporting rod 3, and the second damping assembly 62 includes an elastic damping member installed in the wheel carrier body 1 and connected to the supporting rod 3. The elastic damping member adopted by the second damping assembly 62 is not directly mounted on the support rod 3, but is connected with the wheelchair, wherein the support rod 3 is rotatably connected with the wheelchair, and the second damping assembly 62 is arranged at the upper end of the support rod 3, so that the normal circumferential rotation of the support rod 3 is not influenced.

In summary, the principle of the present embodiment is: the lower end of the wheel carrier main body 1 is rotatably provided with a roller assembly 5 through a support rod 3, the upper end of the wheel carrier main body 1 is rotatably connected with the wheelchair through a connecting rod 2, and one or more damping mechanisms 6 are arranged between the wheel carrier main body 1 and the support rod 3 as well as between the connecting rod 2, so that single-stage or multi-stage damping of the small wheel of the wheelchair is realized, and a better damping effect is achieved on a fine bumpy road surface.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the wheel carrier body 1, the base 11, the shield 12, the support legs 13, the strip-shaped grooves 14, the reinforcing ribs 15, the connecting rod 2, the stop collar 21, the lower section 22, the upper section 23, the support rod 3, the rotation mounting mechanism 4, the rotation block 41, the rotation hole 42, the rotation shaft 43, the rotation bearing 44, the stop cylinder 45, the roller assembly 5, the wheel hub 51, the wheel core 52, the spokes 53, the tire 54, the mounting groove 55, the vibration damping mechanism 6, the first vibration damping assembly 61, the second vibration damping assembly 62, etc. are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a wheelchair wheel with buffer function, includes wheel carrier main part (1), its characterized in that, wheel carrier main part (1) upper end install connecting rod (2), wheel carrier main part (1) lower extreme install a pair of bracing piece (3), bracing piece (3) lower extreme between install roller components (5) through rotating installation mechanism (4), wheel carrier main part (1) and connecting rod (2) and/or bracing piece (3) between be provided with damping mechanism (6).

2. A wheelchair wheel with a damping function according to claim 1, characterised in that the damping mechanism (6) comprises a first damping member (61) arranged between the wheel carrier body (1) and the connecting rod (2); or the damping component comprises a second damping component (62) arranged between the wheel carrier main body (1) and the supporting rod (3).

3. The wheelchair wheel with buffering function as claimed in claim 2, wherein the first damping unit (61) comprises an elastic damping member installed in the wheel frame body (1) and connected to the connecting rod (2), and the second damping unit (62) comprises an elastic damping member installed in the wheel frame body (1) and connected to the supporting rod (3).

4. A wheelchair wheel with cushioning function as claimed in claim 3, wherein the resilient shock absorbing member is any one or more of a metal rubber shock absorber, a metal shock absorber, a pneumatic shock absorber and a polymer shock absorber.

5. The wheelchair wheel with buffer function as claimed in claim 1, wherein a limit sleeve (21) is fixed on the connecting rod (2), and the connecting rod (2) is divided into a lower section (22) inserted in the wheel carrier body (1) and an upper section (23) rotationally connected with the wheelchair by the limit sleeve (21).

6. The wheelchair wheel with the buffering function as claimed in claim 1, wherein the wheel carrier body (1) comprises a base (11) connected with the connecting rod (2), the base (11) is provided with a protective cover (12) which is arc-shaped and opposite to the roller assemblies (5), two sides of the base (11) are respectively provided with supporting legs (13) which extend downwards and are connected with the supporting rod (3), the side surfaces of the supporting legs (13) are provided with strip-shaped grooves (14) which are opposite to and run through the roller assemblies (5), and reinforcing ribs (15) are connected between the supporting legs (13) and the protective cover (12).

7. The wheelchair wheel with the buffering function as claimed in claim 1, wherein the rotation mounting mechanism (4) comprises rotation blocks (41) respectively arranged at the lower ends of the support rods (3), the rotation blocks (41) are provided with rotation holes (42) which are oppositely arranged, a rotation shaft (43) penetrates through the rotation holes (42), a rotation bearing (44) is arranged between the rotation shaft (43) and the roller assembly (5), a limiting cylinder (45) is arranged between the rotation bearing (44) and the rotation block (41), the limiting cylinder (45) is slidably sleeved on the rotation shaft (43), two ends of the limiting cylinder are respectively abutted against the rotation bearing (44) and the rotation block (41), and the rotation bearing (44) and the rotation block (41) are respectively symmetrically arranged relative to the roller assembly (5).

8. The wheelchair wheel with the buffer function as claimed in claim 7, wherein the roller assembly (5) comprises a hub (51), a wheel core (52) and spokes (53) are arranged in the hub (51), a tire (54) is sleeved outside the hub (51), and mounting grooves (55) for the rotary bearings (44) to be clamped into are formed in two sides of the wheel core (52).

9. The wheelchair wheel with buffer function as claimed in claim 8, wherein the tyre (54) is made of rubber or silica gel.

10. The wheelchair wheel with buffer function as claimed in claim 7, wherein the turning block (41) is integrally formed with the support rod (3), and the width and thickness of the turning block (41) are larger than the diameter of the support rod (3).