CN210138254U

CN210138254U - Wheelchair front fork vibration damping mechanism

Info

Publication number: CN210138254U
Application number: CN201920551852.8U
Authority: CN
Inventors: 黄魁; 姜薇; 高攀
Original assignee: Hubei Jieli Intelligent Rehabilitation Equipment Co Ltd
Current assignee: HUBEI JIUYINGLI LITHIUM ELECTRIC VEHICLE TECHNOLOGY Co.,Ltd.
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-03-13
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a wheelchair front fork damping mechanism, the upper end of support is rotationally movable mounting at the rear portion of support, the wheel is rotationally movable mounting at the lower tip of support, mated buffer gear comprises barrel, telescopic link and spring respectively, and mated buffer gear is located the wheel both sides respectively, and the upper end of barrel is rotationally movable mounting in the front portion of support, the telescopic link activity is planted in the barrel, is provided with stop gear between telescopic link and barrel, the spring is located the barrel to be located between the upper end of telescopic link and the interior top surface of barrel, the lower tip of telescopic link is rotationally movable mounting on the support, the utility model discloses the advantage is: the vibration absorber has higher response speed, can absorb vibration at the highest speed, can adapt to various complex road conditions, and further plays a good role in buffering and damping vibration.

Description

Wheelchair front fork vibration damping mechanism

Technical Field

The utility model relates to the technical field of wheelchairs, in particular to a front fork of a wheelchair.

Background

The wheelchair is a walking and rehabilitation tool specially provided for the disabled or the disabled, and the disabled or the disabled can do physical exercises or participate in social activities by means of the wheelchair. Common wheelchair is mostly four-wheel wheelchair in the market at present, and the wheel of this kind of wheelchair is mostly rigid connection with the wheelchair body, and consequently the damping performance is poor, and the comfort level that the user took is relatively poor, uses to experience not very ideal. To this phenomenon, some wheelchairs in the market at present adopt to install damping mechanism on the front fork of wheelchair and cushion the damping, these damping mechanism are mostly spring damping mechanism that can carry out telescopic movement in vertical direction, however adopt the damping mechanism of this kind of structure, its structural design is not very reasonable, cushion the damping effect not very ideal, still can not satisfy the user well to the requirement of taking the comfort level to structural strength is lower, damage easily after long-term the use, life is shorter.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above-mentioned not enough and provide a buffering damping is effectual, and it is high to take the comfort level, and the structure is firm, and is not fragile, long service life's wheelchair front fork damping mechanism.

The utility model discloses a solve above-mentioned technical problem and the technical solution who adopts as follows:

the wheelchair front fork vibration damping mechanism comprises a support, wheels, a support and paired buffer mechanisms, wherein the upper end of the support is rotatably and movably mounted at the rear part of the support, the wheels are rotatably and movably mounted at the lower end part of the support, the paired buffer mechanisms are respectively composed of a barrel, a telescopic rod and a spring, the paired buffer mechanisms are respectively positioned at two sides of the wheels, the upper end of the barrel is rotatably and movably mounted at the front part of the support, the telescopic rod is movably inserted into the barrel, a limiting mechanism is arranged between the telescopic rod and the barrel, the spring is positioned in the barrel and positioned between the upper end of the telescopic rod and the inner top surface of the barrel, and the lower end of the telescopic rod is rotatably and movably mounted on the support.

The support is provided with a limiting hole, the supporting screw penetrates through the limiting hole, the paired locking nuts are respectively screwed on the supporting screw and are positioned on the upper side and the lower side of the support, the bottom of the support is provided with paired limiting rib plates, and the locking nut positioned below the support is clamped between the paired limiting rib plates.

The limiting mechanism is composed of a limiting bolt, an avoiding groove is formed in the side wall of the barrel, a threaded hole is formed in the telescopic rod located in the barrel, and the limiting bolt penetrates through the avoiding groove and is screwed in the threaded hole of the telescopic rod.

The wheel hub type wheel hub further comprises a first pivot, a first nut, a second pivot, a second nut, a pair of third pivots and a pair of third nuts, wherein the lower end part of the bracket is provided with a pair of first through holes, the first pivot is movably arranged in the wheels and the pair of first through holes in a penetrating way, the end part of the first pivot is provided with a first screw rod, the first nut is rotatably arranged on the first screw rod, the lower end part of the telescopic rod and the bracket are respectively provided with a corresponding second through hole, the second pivot is movably arranged in the second through holes of the telescopic rod and the bracket in a penetrating way, the end part of the second pivot is provided with a second screw rod, the second nut is rotatably arranged on the second screw rod, the front part and the rear part of the support are respectively provided with a shaft sleeve, the pair of third pivots are respectively movably arranged in the shaft sleeves in a penetrating way, the upper end parts of the barrel body and the bracket are respectively provided with a third through hole, the barrel and the support are respectively sleeved on the paired third pivots through the third through holes, the paired third pivots are respectively provided with a third screw, and the paired third nuts are respectively screwed on the third screws.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is: this wheelchair front fork damping mechanism is at the in-process of marcing, when meetting barrier or hollow road surface, the wheel can carry out the multi-angle swing along the incline direction, it only can absorb the ascending vibration of vertical side to have avoided traditional damping mechanism, and can not absorb the phenomenon of horizontal direction vibration, thereby not only has faster reaction rate, can the fastest speed absorbed vibration, and all have fine absorption effect to the vibration in different position, adaptable various complicated road surface condition, and then played fine buffering damping effect, the riding comfort of wheelchair has been improved by a wide margin, and this wheelchair front fork damping mechanism adopts by the support, the triangle-shaped frame construction that buffer gear and support constitute, therefore, high stability has, the structure is very firm, not fragile, thereby showing the life who has prolonged this wheelchair front fork damping mechanism.

Drawings

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

FIG. 2 is a schematic diagram of the right side view of the structure of FIG. 1;

FIG. 3 is a schematic bottom view of the stand of FIG. 1;

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

FIG. 5 is an enlarged view of a portion of FIG. 2 at B;

fig. 6 is a partially enlarged schematic view of C in fig. 2.

Detailed Description

As shown in fig. 1 and 2, the wheelchair front fork vibration damping mechanism includes a support 1, a wheel 2, a bracket 3, a pair of cushion mechanisms, a support screw 7, a pair of lock nuts 8, a first pivot 14, a first nut 15, a second pivot 16, a second nut 17, a pair of third pivots 18 and a pair of third nuts 19, wherein the upper end of the bracket 3 is rotatably and movably mounted at the rear of the support 1, the wheel 2 is rotatably and movably mounted at the lower end of the bracket 3, the pair of cushion mechanisms are respectively composed of a cylinder 4, a telescopic rod 5 and a spring 6, the pair of cushion mechanisms are respectively located at two sides of the wheel 2, the upper end of the cylinder 4 is rotatably and movably mounted at the front of the support 1, the telescopic rod 5 is movably mounted in the cylinder 4, and a limit mechanism is interposed between the telescopic rod 5 and the cylinder 4. As shown in fig. 4, the limiting mechanism is composed of a limiting bolt 11, an avoiding groove 12 is formed in the side wall of the cylinder 4, a threaded hole 13 is formed in the telescopic rod 5 located in the cylinder 4, and the limiting bolt 11 passes through the avoiding groove 12 and is screwed into the threaded hole 13 of the telescopic rod 5. The spring 6 is positioned in the barrel 4 and between the upper end part of the telescopic rod 5 and the inner top surface of the barrel 4, and the lower end part of the telescopic rod 5 is rotatably and movably arranged on the bracket 3. The specific connection relations between the cylinder 4 and the support 1, between the support 3 and the support 1, between the telescopic rod 5 and the support 3, and between the support 3 and the wheel 2 are as follows: as shown in fig. 5 and 6, a pair of first through holes 20 are formed in the lower end portion of the bracket 3, the first pivot 14 is movably inserted into the wheel 2 and the pair of first through holes 20, a first screw 21 is disposed at an end portion of the first pivot 14, and the first nut 15 is screwed on the first screw 21. The lower end of the telescopic rod 5 and the bracket 3 are respectively provided with corresponding second through holes 22, the second pivot 16 is movably arranged in the second through holes 22 of the telescopic rod 5 and the bracket 3 in a penetrating way, the end part of the second pivot 16 is provided with a second screw rod 23, and the second nut 17 is screwed on the second screw rod 23. The front and the rear parts of the support 1 are respectively provided with a shaft sleeve 24, the paired third pivots 18 are respectively movably arranged in the shaft sleeves 24, the upper ends of the cylinder 4 and the bracket 3 are respectively provided with a third through hole 25, the cylinder 4 and the bracket 3 are respectively sleeved on the paired third pivots 18 through the third through holes 25, the paired third pivots 18 are respectively provided with a third screw 26, and the paired third nuts 19 are respectively screwed on the third screw 26. The support 1 is provided with a limiting hole 9, the supporting screw 7 penetrates through the limiting hole 9, the paired locking nuts 8 are respectively screwed on the supporting screw 7 and are positioned on the upper side and the lower side of the support 1, and the front fork vibration damping mechanism of the wheelchair can be fixedly installed on the wheelchair through the supporting screw 7. As shown in fig. 3, a pair of rib plates 10 are provided at the bottom of the support 1, and the locking nut 8 located below the support 1 is clamped between the pair of rib plates 10.

Claims

1. Wheelchair front fork damping mechanism, its characterized in that: the wheel-mounted telescopic type wheel support comprises a support, wheels, a support and paired buffer mechanisms, wherein the upper end of the support is rotatably and movably mounted at the rear part of the support, the wheels are rotatably and movably mounted at the lower end part of the support, the paired buffer mechanisms are respectively composed of a barrel, a telescopic rod and a spring, the paired buffer mechanisms are respectively positioned at two sides of the wheels, the upper end of the barrel is rotatably and movably mounted at the front part of the support, the telescopic rod is movably inserted in the barrel, a limiting mechanism is arranged between the telescopic rod and the barrel, the spring is positioned in the barrel and between the upper end of the telescopic rod and the inner top surface of the barrel, and the lower end of the telescopic rod is rotatably and.

2. The wheelchair front fork damping mechanism of claim 1, wherein: the support is provided with a limiting hole, the supporting screw penetrates through the limiting hole, the paired locking nuts are respectively screwed on the supporting screw and are positioned on the upper side and the lower side of the support, the bottom of the support is provided with paired limiting rib plates, and the locking nut positioned below the support is clamped between the paired limiting rib plates.

3. The wheelchair front fork damper mechanism of claim 1 or 2, wherein: the limiting mechanism is composed of a limiting bolt, an avoiding groove is formed in the side wall of the barrel, a threaded hole is formed in the telescopic rod located in the barrel, and the limiting bolt penetrates through the avoiding groove and is screwed in the threaded hole of the telescopic rod.

4. The wheelchair front fork damper mechanism of claim 1 or 2, wherein: the wheel hub type wheel hub further comprises a first pivot, a first nut, a second pivot, a second nut, a pair of third pivots and a pair of third nuts, wherein the lower end part of the bracket is provided with a pair of first through holes, the first pivot is movably arranged in the wheels and the pair of first through holes in a penetrating way, the end part of the first pivot is provided with a first screw rod, the first nut is rotatably arranged on the first screw rod, the lower end part of the telescopic rod and the bracket are respectively provided with a corresponding second through hole, the second pivot is movably arranged in the second through holes of the telescopic rod and the bracket in a penetrating way, the end part of the second pivot is provided with a second screw rod, the second nut is rotatably arranged on the second screw rod, the front part and the rear part of the support are respectively provided with a shaft sleeve, the pair of third pivots are respectively movably arranged in the shaft sleeves in a penetrating way, the upper end parts of the barrel body and the bracket are respectively provided with a third through hole, the barrel and the support are respectively sleeved on the paired third pivots through the third through holes, the paired third pivots are respectively provided with a third screw, and the paired third nuts are respectively screwed on the third screws.