CN201356728Y - Back boosting three-wheel chair - Google Patents
Back boosting three-wheel chair Download PDFInfo
- Publication number
- CN201356728Y CN201356728Y CNU2009200065354U CN200920006535U CN201356728Y CN 201356728 Y CN201356728 Y CN 201356728Y CN U2009200065354 U CNU2009200065354 U CN U2009200065354U CN 200920006535 U CN200920006535 U CN 200920006535U CN 201356728 Y CN201356728 Y CN 201356728Y
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- China
- Prior art keywords
- wheel
- sprocket wheel
- power
- chain
- screw
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- Expired - Fee Related
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Abstract
A back boosting three-wheel chair is fixed in a conical sleeve of a base plate on a transverse rod of a wheel chair framework, which is characterized in that a boosting plate, a boosting rod and an arc-shaped connecting rod are movably connected via screws, a sliding groove at the end of the arc-shaped connecting rod is movably connected with a crank arm of a chain wheel, a fly wheel on a main shaft is connected with the chain wheel via a chain, when rear wheels are driven to advance by back force of a user, the user can drive the rear wheels by the back force or rock the chain wheel to drive a front wheel by hands as the back force is higher than the arm force, thereby reducing fatigue caused by rocking the chain wheel by hands when alternately driving the front wheel and the rear wheels to advance. Besides, the user simultaneously utilizes dual power of the hand rocking force and the back force, and then difficulties of barriers or slopes on road surfaces can be overcome.
Description
Affiliated technical field
This utility model relates to a kind of back power-assisted three wheelchairs.
Background technology
Three wheelchairs that commercially available disabled person is used have hand three wheelchairs and three wheelchairs hand, that lever combines, and its power all is that the dependence both hands shake sprocket wheel or pull lever drive chain wheel drive is advanced.
The disabled person is when relying on both hands to drive three wheelchairs to advance, face on the one hand and will firmly drive, the difficulty of direction of advance will be controlled in the aspect in addition, people's arm strength is limited, the time of advancing is longer, action is more difficult when particularly running into the road surface obstacle or the gradient being arranged, and has to rely on other people to assist just can extricate oneself from a plight sometimes.
Summary of the invention
Difficulty when only relying on both hands to drive three wheelchairs to advance for overcoming the disabled person, this utility model provides a kind of back power-assisted three wheelchairs.
The technical scheme that its technical problem that solves this utility model adopts is: a vertebra shape sleeve, support, arc support are set on a rectangular substrate, and be combined in three positions of upper, middle and lower of substrate through soldering group, be provided with an assister bar in the vertebra shape sleeve, one end of assister bar is connected through the top screw with the sleeve of power-assisted backboard face, assister bar between power-assisted plate and vertebra shape sleeve is provided with coil tension spring, and vertebra shape sleeve is used for assister bar and can moves up and down in slip; End flexibly connects through the curved rod of screw and setting in addition, the curved rod middle part flexibly connects through screw and support, one sprocket wheel is set on the arc support and flexibly connects through screw, sprocket wheel is provided with one and cranks arm, and the top of cranking arm flexibly connects with the sliding tray that is arranged on the curved rod end.
The wheelchair skeleton at bench back is provided with two cross bars, and substrate is fixed on the cross bar through screw, and the trailing wheel center is provided with a main shaft, and main shaft is provided with a flywheel, and links through chain and sprocket wheel on the arc support.
Its operation principle is, the disabled person is after with hand sprocket wheel fatigue, can grasp direction on the other hand, other holds handrail, when utilizing back strength to promote the power-assisted plate, coil tension spring is compressed, and assister bar moves backward, and curved rod is under leverage, sliding tray drives cranking arm on the sprocket wheel, in sprocket rotation, drive flywheel on the main shaft and trailing wheel and rotate and advance through chain, deduct back strength after, assister bar backspace under the tension force effect of coil tension spring, the sliding tray of curved rod bottom drives and cranks arm, sprocket wheel, chain, flywheel reverses simultaneously, because can not mention that wheel still moves on during the flywheel counter-rotating, the reuse back promotes behind the power-assisted sheet reset.
The beneficial effects of the utility model are: when advancing with back strength driving trailing wheel, because back strength is bigger than arm strength, utilize back strength to drive trailing wheel or with hand chain wheel drive front-wheel, drive to advance by turns and can alleviate the fatigue of hand sprocket wheel, adopt the dual dynamic of hand and back strength simultaneously, the difficulty in the time of overcoming the road surface obstacle or the gradient are arranged.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the basic sketch map of this utility model embodiment.
Fig. 2 is that the K of this utility model embodiment Fig. 1 is to sketch map.
Fig. 3 is the power conduction sketch map of this utility model embodiment.
Among the figure; 1. substrate, 2. vertebra shape sleeve, 3. support, 4. arc support, 5. assister bar, 6. power-assisted plate, 7. sleeve, 8. top screw, 9. coil tension spring, 10. screw, 11. curved rod, 12. sliding trays, 13. sprocket wheels, 14. crank arm, 15. chain, 16. trailing wheels, 17. main shafts, 18. flywheels, 19. the wheelchair skeleton, 20. cross bars, 21. handrails, 22. benches, 23. pedal, 24. front-wheels, 25. protective cases, 26. cranks.
The specific embodiment
In Fig. 1, Fig. 2, a rectangular substrate (1) is provided with vertebra shape sleeve (2), support (3), arc support (4), and be combined on the substrate (1) through soldering group, be provided with assister bar (5) in the vertebra shape sleeve (2), one end of assister bar (5) is connected through top screw (8) with the sleeve (7) at power-assisted plate (6) back side, and the assister bar (5) between power-assisted plate (6) and vertebra shape sleeve (2) is provided with coil tension spring (9); End flexibly connects through screw (10) and curved rod (11) in addition, curved rod (11) middle part flexibly connects through screw (10) and support (3), one sprocket wheel (13) is set on the arc support (4) and flexibly connects through screw (10), be provided with one on the sprocket wheel (13) and crank arm (14), (14) top of cranking arm flexibly connects with the sliding tray (12) that is arranged on curved rod (11) end.
The wheelchair skeleton (19) at bench (22) back is provided with two cross bars (20), substrate (1) is fixed on the cross bar (20) through screw (10), trailing wheel (16) center is provided with a main shaft (17), main shaft (17) is provided with flywheel (18), and links through chain (15) and sprocket wheel (13) on the arc support (4).
In Fig. 3, when back strength promotes power-assisted plate (6), coil tension spring (9) is compressed, assister bar (5) moves backward, crank arm (14) of curved rod (11) on leverage lower slider groove (12) drive sprocket wheel (13), the flywheel (18) and trailing wheel (16) rotation that drive on the main shaft (17) through chain (15) when sprocket wheel (13) rotates are advanced, after deducting back strength, assister bar (5) backspace under the tension force effect of coil tension spring (9), the sliding tray (12) of curved rod (11) bottom drives crank arm (14), sprocket wheel (13), chain (15), flywheel (18) reverses simultaneously, owing to can not mention during flywheel (18) counter-rotating, wheel (16) still moves on, and the reuse back promotes after power-assisted plate (6) resets.
Claims (2)
1, a kind of back power-assisted three wheelchairs, be fixed in the vertebra shape sleeve of the substrate on the wheelchair skeleton cross bar, power-assisted plate, assister bar, curved rod flexibly connect through screw, cranking arm on the sliding tray of curved rod end and the sprocket wheel is connected, flywheel on the main shaft links through chain and sprocket wheel, it is characterized in that: substrate (1) is provided with vertebra shape sleeve (2), support (3), arc support (4), and be combined on the substrate through soldering group, be provided with assister bar (5) in the vertebra shape sleeve, an end of assister bar is connected through top screw (8) with the sleeve (7) at power-assisted plate (6) back side; End flexibly connects through screw (10) and curved rod (11) in addition.
2, the described back of root a tree name claim 1 power-assisted three wheelchairs, it is characterized in that: a sprocket wheel (13) is set on the arc support (4) and flexibly connects through screw (10), be provided with one on the sprocket wheel and crank arm (14), the top of cranking arm is connected with the sliding tray that is arranged on the curved rod end (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200065354U CN201356728Y (en) | 2009-02-28 | 2009-02-28 | Back boosting three-wheel chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200065354U CN201356728Y (en) | 2009-02-28 | 2009-02-28 | Back boosting three-wheel chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201356728Y true CN201356728Y (en) | 2009-12-09 |
Family
ID=41422480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200065354U Expired - Fee Related CN201356728Y (en) | 2009-02-28 | 2009-02-28 | Back boosting three-wheel chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201356728Y (en) |
-
2009
- 2009-02-28 CN CNU2009200065354U patent/CN201356728Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20100228 |