CN204364262U - A kind of lever actuated gear change wheelchair - Google Patents
A kind of lever actuated gear change wheelchair Download PDFInfo
- Publication number
- CN204364262U CN204364262U CN201520004697.XU CN201520004697U CN204364262U CN 204364262 U CN204364262 U CN 204364262U CN 201520004697 U CN201520004697 U CN 201520004697U CN 204364262 U CN204364262 U CN 204364262U
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- drive
- driven
- drive sprocket
- wheelchair
- wheel
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Abstract
A kind of lever actuated gear change wheelchair, comprises body part, drive part and running part; Described drive part comprises driving handle, coaxial mounted first drive sprocket and the second drive sprocket; Described running part comprises chain, changement, the first driven ratchet and the second driven ratchet; Described changement comprises the first driven wheel and second driven wheel of mutual external toothing connection, and described first driven wheel and described first driven coaxial ratchet are installed, and described second driven wheel and described second driven coaxial ratchet drive described axletree; The installation direction of described first driven ratchet and the second driven ratchet is contrary.This utility model utilizes driving handle to realize driving separately the first drive sprocket or driving the first drive sprocket and the second drive sprocket simultaneously, in conjunction with the first driven ratchet and the second driven ratchet, and then realizes driving with indirect the Continuous Drive of axletree.
Description
Technical field:
This utility model relates to a kind of lever actuated gear change wheelchair, belongs to the technical field of auxiliary medical equipment.
Background technology:
People with disability is the colony of social extensive concern, wheelchair is then the important branch of helping the disabled in apparatus, because the relation of wheelchair and people with disability is quite close, therefore a kind of structure is designed simple, with low cost, efficiency is high and laborsaving, and the convenient wheelchair regulated, improves self-care ability to people with disability and have very important significance.
The kind of wheelchair is a lot, but is mainly divided into two large classes: common wheelchair and specifical wheelchair.Common wheelchair generally by vehicle frame, seat, wheel, brake gear and handrail etc. part composition; There is structure simple, feature with low cost.But common wheelchair is meritorious can be single, uses effort, comfort level and performance-adjustable poor, and volume is comparatively large, can not adapt to the shortcoming such as complicated landform and heavy grade landform.Specifical wheelchair is then the class wheelchair derived from common wheelchair according to function and application target, common are fixed wheelchair, foldable wheelchair, stand-up wheelchair, formula of lying wheelchair and electric wheelchair etc.In specifical wheelchair in the market, two kinds can be had from row cutting, one is electric wheelchair, there is provided power by motor, thus realize speed change and climbing function, but electric wheelchair is owing to addition of motor and power supply and control device, so volume is larger, more greatly and not portable, cost is very high, and the economy far beyond most of people with disability bears level for weight; Another kind manually drives wheelchair, but the efficiency of manual actuation is very low, and speed changing effect and Continuous Drive ability, can not be applicable to the service condition of complicated landform and heavy grade landform.
Chinese patent CN201375626 proposes a kind of continuous manual wheelchair drive mechanism, its operation principle is that driving handle and short driving handle realize Non-intermittent transmission by connecting rod relation, although this device can realize Non-intermittent transmission, and can speed changing function be realized, but due to its complex structure, in transmission process, energy loss is comparatively large, so efficiency is not high, meanwhile, this driving device fails to realize the random switching that intermittent driving and Non-intermittent drive.
Chinese patent CN201333139 proposes a kind of hand-operated wheel structure of chair, what adopt is that two wheels manually shaken realize motion by chain-driving two flywheels, main purpose is realize being separated of handwheel and wheel by two handwheels, although this device is also to be connected by chain by sprocket wheel and pawl type flywheel to realize transmission, but because of the mode that it adopts hand-operated wheel, the moment provided is less.
Chinese patent CN202960975U proposes a kind of variable-ratio wheelchair, and realize speed change by the gear train kind of drive of driving handle and different drive ratios, its type of drive mainly shakes handwheel.Compared with this utility model, in contrast material, transmission principle is complicated, and cannot realize continuous transmission.
To sum up, the wheelchair type of drive of prior art is comparatively single, and drive mechanism is comparatively complicated, and energy loss is large, comparatively require great effort, and transmission efficiency is not high when user uses, and can not well help user to adapt to complicated orographic condition, improve self-care ability.
Utility model content:
For the deficiencies in the prior art, this utility model provides a kind of lever actuated gear change wheelchair.The technical problem that this wheelchair will solve is to provide a kind of self-service, laborsaving, intermittently-driving and the adjustable and wheel-chair that speed is adjustable of transmission continuously, makes it meet people with disability to demand that is self-service, laborsaving, that be applicable to complicated landform and heavy grade condition, governing speed.
The technical solution of the utility model is as follows:
A kind of lever actuated gear change wheelchair, comprises body part, drive part and running part;
Wherein, described body part comprises wheel, axletree, vehicle frame and seat;
Described drive part comprises driving handle, coaxial mounted first drive sprocket and the second drive sprocket;
Described running part comprises chain, changement, the first driven ratchet and the second driven ratchet; Described changement comprises the first driven wheel and second driven wheel of mutual external toothing connection, and described first driven wheel and described first driven coaxial ratchet are installed, and described second driven wheel and described second driven coaxial ratchet drive described axletree; The installation direction of described first driven ratchet and the second driven ratchet is contrary;
Described first drive sprocket, by the driven ratchet of chain drive first, drives wheel by changement; Described second drive sprocket is by the driven ratchet of chain drive second;
Wherein, described driving handle is connected with described first drive sprocket separately or described driving handle is connected with the second drive sprocket with described first drive sprocket respectively.
This utility model designs cleverly and is:
A. this utility model utilizes lever principle to realize the driving of wheel.This utility model adopts driving handle to instead of hand-operated wheel of the prior art, is carried out the power of Wheelchairs Available advance by the swing of driving handle.The factors such as the size of drive sprocket, the weight of wheelchair make resistance torque substantially constant, can be increased the length providing and drive power one side by the length of lever, to reach equal moment, thus save the size of the power of user.
B. this utility model also changes speed and moment by lever actuated principle.When hand force application location is when near handle top, the arm of force increases, and amplitude of fluctuation increases, thus exports larger moment and slower speed; When hand force application location is bottom close handle, the arm of force reduces, and amplitude of fluctuation reduces, and hunting frequency increases, thus the less moment of output and faster output speed, thus realize Torque-adjusting and governing speed.
C. driving handle is utilized to realize driving separately the first drive sprocket or driving the first drive sprocket and the second drive sprocket simultaneously, in conjunction with the first driven ratchet and the second driven ratchet, and then realize driving with indirect the Continuous Drive of axletree, arbitrarily can change type of drive according to the custom of user, the one way realizing driving handle drives or back and forth drives; Wherein said changement is used for: by the commutation effect of the first driven wheel and the second driven wheel, and then drives the second driven ratchet and described first driven ratchet driven axletree continuous equidirectional to rotate.
This utility model adopts the simple changement of structure, its ultimate principle is: when driving handle forward rocking motion, second drive sprocket and the first drive sprocket rotate forward, pass through chain drive, second driven ratchet rotates forward, thus drive wheel to advance, now because the first driven ratchet is oppositely installed relative to the second driven ratchet, the first driven ratchet is in backlash state; When driving handle swings backward, second drive sprocket and the first drive sprocket rotate backward, pass through chain drive, now the second driven ratchet is in backlash state, because the first driven ratchet is oppositely installed relative to the second driven ratchet, first driven ratchet still rotates backward, because the commutation effect of changement, thus band motor car wheel advances forward.
Preferred according to this utility model, described first drive sprocket also fixing coaxial is provided with adjustment circle, described second drive sprocket is also fixedly installed adjustment plate, the outer rim of described adjustment plate is provided with the second Non-intermittent and drives adjustment teeth groove, described adjustment snare is located at described adjustment plate outer rim, on described adjustment circle, hollow out is provided with the first Non-intermittent and drives adjustment teeth groove and intermittent driving adjustment teeth groove, and the first described Non-intermittent drives adjustment teeth groove and the second described Non-intermittent to drive to adjust teeth groove to rush and arranges together; Described driving handle described intermittent driving adjustment teeth groove or run through of planting is plugged on the first Non-intermittent and drives adjustment teeth groove and the second Non-intermittent to drive in adjustment teeth groove.The advantage herein designed is, this utility model by arranging adjustment circle and adjustment plate on the first drive sprocket and the second drive sprocket, and drive adjustment teeth groove by arranging in above-mentioned adjustment component, realization utilizes driving handle one way to drive the first drive sprocket or continuous backhaul to drive the first drive sprocket and the second drive sprocket, in conjunction with the first driven ratchet and the second driven ratchet, realize the Continuous Drive to axletree.
Preferred according to this utility model, described wheelchair comprises two independently axletrees: the first axletree and the second axletree, and described first axletree is for driving right wheel, and described second axletree is for driving left wheel; Described wheelchair also comprises two covers independently described drive part and described running part: i.e. the first drive part, the first running part, the second drive part and the second running part; Described first drive part and the first running part are used for transmission first axletree and then drive right wheel, and described second drive part and the second running part are used for transmission second axletree and then drive left wheel.The advantage herein designed is, two wheels of described wheelchair drive respectively, is beneficial to and realizes regulating the differential of wheelchair, realizes turning.
Preferred according to this utility model, described wheelchair also comprises damping, and described damping is the spring between described seat and described vehicle frame.Adopt damping herein, can effectively alleviate wheelchair in motor process, that brings because of road surface road conditions jolts, and makes user in use have more comfortable experience.
Preferred according to this utility model, described wheelchair also comprises pedal, and described pedal is connected with described vehicle frame front end.The advantage herein designed is, foot can be positioned on pedal to maintain useful posture by user, helps physical recovery and trip smoothly.
Preferred according to this utility model, described wheelchair also comprises a universal wheel, and described universal wheel is connected with the front end of described vehicle frame by universal wheel fixed block.The advantage herein designed is, in order to maintain the stable of wheelchair and balance, makes driving safer.
The beneficial effects of the utility model are:
1, this utility model adopts lever driving handle to come governing speed and moment, thus according to orographic condition, can use the little speed of high-torque, flat road surface adopts the large speed of little moment in the place of landform difference, thus adapts to more complicated orographic condition.
2, this utility model adopts changement, when driving handle is swung continuously, wheel all can be driven to rotate forward, and this changement structure is simple, and transmission process energy loss is less, and transmission efficiency is high, and user is more laborsaving.
3, the ingehious design of drive part described in the utility model, can realize the exchange of intermittently-driving and Non-intermittent transmission, when pavement conditions is better, can adopt Non-intermittent transmission, thus obtains the efficiency of larger speed and Geng Gao; When pavement conditions is poor, then adopt intermittently-driving, by the position of backlash stroke adjustment both hands, thus it is more flexible that wheelchair is regulated.By the exchange of intermittently-driving and Non-intermittent transmission, make wheelchair can be applicable to more complicated terrain environment, there is controllability more flexibly.
4, the preferred damping of this utility model, can effectively alleviate wheelchair in motor process, that brings because of road surface road conditions jolts, and makes user in use have more comfortable experience.
5, the preferred pedal of this utility model, foot can be positioned on pedal to maintain useful posture by user, is applicable to the people with disability of different situations, and helps physical recovery and trip smoothly.
6, this utility model preferably universal wheel, while cost-saving, can also maintain the stable of wheelchair and balance, make driving safer.
Accompanying drawing explanation
The overall structure schematic diagram of Fig. 1, wheelchair described in the utility model, comprising two independently axletree, drive part and running parts;
Fig. 2, be the side view of Fig. 1;
Fig. 3, be the structural representation of drive part described in the utility model and running part;
Fig. 4, be the sectional view that driving handle described in the utility model drives separately the first drive sprocket;
Fig. 5, be the sectional view that driving handle described in the utility model drives the first drive sprocket and the second drive sprocket simultaneously;
Fig. 6, be the structural representation of the first drive sprocket described in the utility model and the second drive sprocket;
Fig. 7, be the dispersed structure schematic diagram of the first drive sprocket described in the utility model and the second drive sprocket;
Figure 1 ?in 7: 1, driving handle, 1 ?the 1, first drive part; 1 ?the 2, second drive part; 1 ?the 3, first running part; 1 ?the 4, second running part; 2, the first drive sprocket, the 3, second drive sprocket, the 4, first driven ratchet, 5, adjustment circle, 5 ?1, first Non-intermittent drive adjustment teeth groove, 5 ?2, intermittent driving adjustment teeth groove; 6, axletree, 6 ?the 1, first axletree; 6 ?the 2, second axletree; 7, fixed axis, the 8, second driven ratchet, 9, fixed axis, 10, adjustment plate, 10 ?the 1, second Non-intermittent drive adjustment teeth groove; 11, chain, 12, chain, 13, bearing, the 14, first driven wheel, the 15, second driven wheel, 16, seat, 17, wheel, 18, damping, 19, vehicle frame, 20, pedal, 21, universal wheel fixed block, 22, universal wheel.
Detailed description of the invention
Below in conjunction with embodiment and Figure of description, this utility model is described in detail, but is not limited thereto.
Embodiment 1,
A kind of lever actuated gear change wheelchair, comprises body part, drive part and running part;
Wherein, described body part comprises wheel 17, axletree 6, vehicle frame 19 and seat 16;
Described drive part comprises driving handle 1, coaxial mounted first drive sprocket 2 and the second drive sprocket 3;
Described running part comprises chain 11, chain 12, changement, the first driven ratchet 4 and the second driven ratchet 8; Described changement comprises the first driven wheel 14 and the second driven wheel 15 that mutual external toothing connects, described first driven wheel 14 is coaxially installed with described first driven ratchet 4, described second driven wheel 15 and axletree 6 described in described second driven ratchet 8 Driven by Coaxial; The installation direction of described first driven ratchet 4 and the second driven ratchet 8 is contrary;
Described first drive sprocket 2 drives the first driven ratchet 4 by chain 11, drives wheel 17 by changement; Described second drive sprocket 3 drives the second driven ratchet 8 by chain 12;
Wherein, described driving handle 1 is connected with described first drive sprocket 2 separately or described driving handle 1 is connected with the second drive sprocket 3 with described first drive sprocket 2 respectively.
Embodiment 2,
A kind of lever actuated gear change wheelchair as described in Example 1, its difference is, described first drive sprocket 2 is gone back fixing coaxial and is provided with adjustment circle 5, described second drive sprocket 3 is also fixedly installed adjustment plate 10, the outer rim of described adjustment plate 10 be provided with the second Non-intermittent drive adjustment teeth groove 10 ?1, described adjustment circle 5 is set in described adjustment plate 10 outer rim, on described adjustment circle 5 hollow out be provided with the first Non-intermittent drive adjustment teeth groove 5 ?1 and intermittent driving adjustment teeth groove 5 ?2, described first Non-intermittent drive adjustment teeth groove 5 ?1 with the second described Non-intermittent drive adjust teeth groove 10 ?1 rush neat setting, described driving handle 1 plant described intermittent driving adjustment teeth groove 5 ?2 or run through be plugged on the first Non-intermittent drive adjustment teeth groove 5 ?1 and second Non-intermittent drive adjustment teeth groove 10 ?in 1.
Embodiment 3,
A kind of lever actuated gear change wheelchair as described in embodiment 1,2, its difference is, described wheelchair comprises two independently axletrees: the first axletree 6 ?1 and second axletree 6 ?2, described first axletree 6 ?1 for driving right wheel, described second axletree 6 ?2 for driving left wheel; Described wheelchair also comprises two covers independently described drive part and described running part: namely the first drive part 1 ?the 1, first running part 1 ?the 3, second drive part 1 ?2 and second running part 1 ?4; Described first drive part 1 ?1 and first running part 1 ?3 for transmission first axletree 6 ?1 and then drive right wheel, described second drive part 1 ?2 and second running part 1 ?4 for transmission second axletree 6 ?2 and then drive left wheel.
Embodiment 4,
A kind of lever actuated gear change wheelchair as described in Example 1, its difference is, described wheelchair also comprises damping 18, and described damping 18 is the spring between described seat 16 and described vehicle frame 19.
Embodiment 5,
A kind of lever actuated gear change wheelchair as described in Example 1, its difference is, described wheelchair also comprises pedal 20, and described pedal 20 is connected with described vehicle frame 19 front end.
Embodiment 6,
A kind of lever actuated gear change wheelchair as described in Example 1, its difference is, described wheelchair also comprises a universal wheel 22, and described universal wheel 22 is connected with the front end of described vehicle frame 19 by universal wheel fixed block 21.
Utilization wheelchair as described in embodiment 1 ?6 carries out the operation principle that lever actuated wheelchair moves ahead, and comprises step as follows:
1) described driving handle 1 is connected with the second drive sprocket 3 with described first drive sprocket 2 respectively, be specially: described driving handle 1 run through be plugged on the first Non-intermittent drive adjustment teeth groove 5 ?1 and second Non-intermittent drive adjustment teeth groove 10 ?in 1, realize driving while the first drive sprocket 2 and the second drive sprocket 3;
2), during forward rocking motion driving handle 1, the second drive sprocket 3 and the first drive sprocket 2 rotate forward simultaneously; Second drive sprocket 3 drives the second driven ratchet 8 to rotate forward by chain 12, first drive sprocket 2 connects the first driven ratchet 4 by chain 11, because the first driven ratchet 4 is oppositely installed relative to the second driven ratchet 8, first driven ratchet 4 is in backlash state, and the second driven ratchet 8 is with motor car wheel 17 to rotate forward;
3) backward wobble drive handle 1 time, the first drive sprocket 2 and the second drive sprocket 3 rotate backward simultaneously; Second drive sprocket 3 drives the second driven ratchet 8 to rotate backward by chain 12, second driven ratchet 8 is in backlash state, first drive sprocket 2 is connected by chain 11 with the first driven ratchet 4, because the first driven ratchet 4 is oppositely installed relative to the second driven ratchet 8, first driven ratchet 4 rotates backward, through the commutation effect of changement, wheel 17 is driven to rotate forward.
Or step is as follows:
1) described driving handle 1 is connected with described first drive sprocket 2 separately, is specially: described driving handle 1 plant described intermittent driving adjustment teeth groove 5 ?in 2, realize the independent driving to the first drive sprocket 2;
2) wobble drive handle 1 backward, first drive sprocket 2 rotates backward, second drive sprocket 3 does not work, first drive sprocket 2 drives the first driven ratchet 4 to rotate backward by chain 11, thus the first driven ratchet 4 drives the first driven wheel 14 to engage the second driven wheel 15 rotates forward, and then wheel 17 is driven to rotate forward;
3) forward rocking motion driving handle 1, first drive sprocket 2 rotates forward, second drive sprocket 3 does not work, first drive sprocket 2 drives the first driven ratchet 4 to rotate forward by chain 11, first driven ratchet 4 is in backlash state, now the first driven ratchet 4 does not drive wheel 17 to advance, and the intermittence realizing wheelchair drives.
Claims (6)
1. a lever actuated gear change wheelchair, comprises body part, drive part and running part; It is characterized in that, wherein, described body part comprises wheel, axletree, vehicle frame and seat;
Described drive part comprises driving handle, coaxial mounted first drive sprocket and the second drive sprocket;
Described running part comprises chain, changement, the first driven ratchet and the second driven ratchet; Described changement comprises the first driven wheel and second driven wheel of mutual external toothing connection, and described first driven wheel and described first driven coaxial ratchet are installed, and described second driven wheel and described second driven coaxial ratchet drive described axletree; The installation direction of described first driven ratchet and the second driven ratchet is contrary;
Described first drive sprocket, by the driven ratchet of chain drive first, drives wheel by changement; Described second drive sprocket is by the driven ratchet of chain drive second;
Wherein, described driving handle is connected with described first drive sprocket separately or described driving handle is connected with the second drive sprocket with described first drive sprocket respectively.
2. a kind of lever actuated gear change wheelchair according to claim 1, it is characterized in that, described first drive sprocket also fixing coaxial is provided with adjustment circle, described second drive sprocket is also fixedly installed adjustment plate, the outer rim of described adjustment plate is provided with the second Non-intermittent and drives adjustment teeth groove, described adjustment snare is located at described adjustment plate outer rim, on described adjustment circle, hollow out is provided with the first Non-intermittent and drives adjustment teeth groove and intermittent driving adjustment teeth groove, and the first described Non-intermittent drives adjustment teeth groove and the second described Non-intermittent to drive to adjust teeth groove to rush and arranges together; Described driving handle described intermittent driving adjustment teeth groove or run through of planting is plugged on the first Non-intermittent and drives adjustment teeth groove and the second Non-intermittent to drive in adjustment teeth groove.
3. a kind of lever actuated gear change wheelchair according to claim 1, it is characterized in that, described wheelchair comprises two independently axletrees: the first axletree and the second axletree, and described first axletree is for driving right wheel, and described second axletree is for driving left wheel; Described wheelchair also comprises two covers independently described drive part and described running part: i.e. the first drive part, the first running part, the second drive part and the second running part; Described first drive part and the first running part are used for transmission first axletree and then drive right wheel, and described second drive part and the second running part are used for transmission second axletree and then drive left wheel.
4. a kind of lever actuated gear change wheelchair according to claim 1, it is characterized in that, described wheelchair also comprises damping, and described damping is the spring between described seat and described vehicle frame.
5. a kind of lever actuated gear change wheelchair according to claim 1, it is characterized in that, described wheelchair also comprises pedal, and described pedal is connected with described vehicle frame front end.
6. a kind of lever actuated gear change wheelchair according to claim 1, it is characterized in that, described wheelchair also comprises a universal wheel, and described universal wheel is connected with the front end of described vehicle frame by universal wheel fixed block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520004697.XU CN204364262U (en) | 2015-01-05 | 2015-01-05 | A kind of lever actuated gear change wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520004697.XU CN204364262U (en) | 2015-01-05 | 2015-01-05 | A kind of lever actuated gear change wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204364262U true CN204364262U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520004697.XU Withdrawn - After Issue CN204364262U (en) | 2015-01-05 | 2015-01-05 | A kind of lever actuated gear change wheelchair |
Country Status (1)
| Country | Link |
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| CN (1) | CN204364262U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490533A (en) * | 2015-01-05 | 2015-04-08 | 山东科技大学 | Lever driven variable-speed wheelchair and working method thereof |
| CN111658351A (en) * | 2020-05-28 | 2020-09-15 | 杭州电子科技大学 | Manual wheelchair capable of stepless adjusting transmission ratio |
-
2015
- 2015-01-05 CN CN201520004697.XU patent/CN204364262U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490533A (en) * | 2015-01-05 | 2015-04-08 | 山东科技大学 | Lever driven variable-speed wheelchair and working method thereof |
| CN104490533B (en) * | 2015-01-05 | 2016-08-24 | 山东科技大学 | A kind of lever actuated gear change wheelchair and method of work thereof |
| CN111658351A (en) * | 2020-05-28 | 2020-09-15 | 杭州电子科技大学 | Manual wheelchair capable of stepless adjusting transmission ratio |
| CN111658351B (en) * | 2020-05-28 | 2022-04-15 | 杭州电子科技大学 | Manual wheelchair capable of stepless adjusting transmission ratio |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150603 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |