CN203647605U - Hand-operated type bevel gear drive wheelchair - Google Patents
Hand-operated type bevel gear drive wheelchair Download PDFInfo
- Publication number
- CN203647605U CN203647605U CN201320820675.1U CN201320820675U CN203647605U CN 203647605 U CN203647605 U CN 203647605U CN 201320820675 U CN201320820675 U CN 201320820675U CN 203647605 U CN203647605 U CN 203647605U
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- CN
- China
- Prior art keywords
- bevel gear
- drive link
- hand
- joint pin
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a hand-operated type bevel gear drive wheelchair which comprises two rear wheels, a front wheel and a frame. The frame comprises a seat, a bracket and a front fork. The top end of the front fork is provided with a ram. The tail end of the ram is lifted upwards and provided with a first bevel gear and a Z-shaped rocking rod connected to the first bevel gear in a shaft mode. A first transmission rod is arranged above the ram through a first connecting column and a bearing. A second transmission rod is arranged in front of the front fork through a second connecting column and a bearing. The two ends of the first transmission rod are provided with a second bevel gear and a third bevel gear respectively. The upper end and the lower end of the second transmission rod are provided with a fourth bevel gear and a fifth bevel gear respectively. The front wheel is connected with a sixth bevel gear in a shaft mode. The first bevel gear and the second bevel gear are connected in a meshed mode, the third bevel gear and the fourth bevel gear are connected in a meshed mode, and the fifth bevel gear and the sixth bevel gear are connected in a meshed mode. According to the hand-operated type bevel gear drive wheelchair, a transmission system is stable and reliable, the problem of loosening and breaking of a chain type wheelchair can be solved, and the adherence structure of the transmission system is simplified.
Description
Technical field
This utility model relates to a kind of wheelchair, relates in particular to a kind of hand-rail type Bevel Gear Transmission wheelchair.
Background technology
Common hand-cranked wheel chair generally adopts chain drive, and this scheme poor stability uses a period of time easily loosening phenomenon of appearance of chain afterwards, in order to make chain fastening, often needs to design complicated tightening structure on vehicle frame; And such wheelchair brakes to the mode of the Z-shaped rocking bar application of force by oppositely (rotation direction when wheelchair is advanced), when after chain is aging, the normal appearance of warp is braked, because of the phenomenon of chain breakage brake failure, consequently user and surrounding population are damaged.
Utility model content
the technical problems to be solved in the utility model is to provide a kind of hand-rail type Bevel Gear Transmission wheelchair, and drive system is reliable and stable, can avoid chain-loose, the breakage problem of chain-type wheelchair, and has simplified drive system attaching structure.
To achieve these goals, technical solution adopted in the utility model is: a kind of hand-rail type Bevel Gear Transmission wheelchair, comprise two trailing wheels, a front-wheel and be erected at trailing wheel and front-wheel on vehicle frame, vehicle frame comprises seat, foot holder and front fork, described front fork top is provided with rod, on the end of rod, choose and be provided with the first bevel gear and Z-shaped rocking bar, the first bevel gear and Z-shaped rocking bar are coupling, the top of described rod is provided with the first drive link by the first joint pin, the first drive link is arranged on the top of the first joint pin by bearing, the front of described front fork is provided with the second drive link by the second joint pin, the second drive link is arranged on the top of the second joint pin by bearing, the two ends of described the first drive link are separately installed with the second bevel gear and third hand tap gear, the top and bottom of described the second drive link are separately installed with the 4th bevel gear and the 5th bevel gear, described front axle is connected to the 6th bevel gear, described the first bevel gear is connected with the second bevel gear is intermeshing, described third hand tap gear is with the 4th bevel gear is intermeshing is connected, described the 5th bevel gear is with the 6th bevel gear is intermeshing is connected.
As a kind of optimal technical scheme of the present utility model, the length of described Z-shaped rocking bar is 3 ~ 5 times of described the first bevel gear diameter, the diameter of described the first bevel gear is 1.2 ~ 1.5 times of diameter of the second bevel gear, the equal diameters of described the second bevel gear, third hand tap gear, the 4th bevel gear, the 5th bevel gear and the 6th bevel gear, the diameter of described front-wheel is 8 ~ 12 times of diameter of the 6th bevel gear.
As a kind of optimal technical scheme of the present utility model, described the first joint pin is at least two, and described the second joint pin is at least two.
As a kind of optimal technical scheme of the present utility model, the straight portion of described rod and the angle of horizontal plane are 0 ° ~ 15 °, the straight portion of described the first drive link and described rod is parallel to each other, and the straight portion of described the second drive link and described front fork is parallel to each other.
The beneficial effect that adopts technique scheme to produce is: the transmission of drive system of the present utility model bevel gear set replaces traditional chain drive, transmission process is more reliable and more stable, can avoid chain-loose, the breakage problem of chain-type wheelchair, and simplify drive system attaching structure.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is side-looking structure chart of the present utility model.
Fig. 2 is the partial enlarged drawing of A part in Fig. 1.
In figure: 1, trailing wheel 2, front-wheel 3, seat 4, foot holder 5, front fork 6, rod 7, the first bevel gear 8, Z-shaped rocking bar 9, the second bevel gear 10, the first joint pin 11, the first drive link 12, third hand tap gear 13, the 4th bevel gear 14, the second drive link 15, the second joint pin 16, the 5th bevel gear 17, the 6th bevel gear 18, bearing.
Detailed description of the invention
Referring to accompanying drawing 1, the structure of a detailed description of the invention of this utility model comprises two trailing wheels 1, a front-wheel 2 and is erected at the vehicle frame on trailing wheel 1 and front-wheel 2, vehicle frame comprises seat 3, foot holder 4 and front fork 5, described front fork 5 tops are provided with rod 6, on the end of rod 6, choosing and be provided with the first bevel gear 7 and Z-shaped rocking bar 8, the first bevel gears 7 and Z-shaped rocking bar 8 is coupling, the top of described rod 6 is provided with the first drive link 11 by the first joint pin 10, the first drive link 11 is arranged on the top of the first joint pin 10 by bearing 18, the front of described front fork 5 is provided with the second drive link 14 by the second joint pin 15, the second drive link 14 is arranged on the top of the second joint pin 15 by bearing 18, the two ends of described the first drive link 11 are separately installed with the second bevel gear 9 and third hand tap gear 12, the top and bottom of described the second drive link 14 are separately installed with the 4th bevel gear 13 and the 5th bevel gear 16, described front-wheel 2 is connected with the 6th bevel gear 17, described the first bevel gear 7 is with second bevel gear 9 is intermeshing is connected, described third hand tap gear 12 is with the 4th bevel gear 13 is intermeshing is connected, described the 5th bevel gear 16 is with the 6th bevel gear 17 is intermeshing is connected.
The length of described Z-shaped rocking bar 8 is 3 ~ 5 times of described the first bevel gear 7 diameters, the diameter of described the first bevel gear 7 is 1.2 ~ 1.5 times of diameter of the second bevel gear 9, the equal diameters of described the second bevel gear 9, third hand tap gear 12, the 4th bevel gear 13, the 5th bevel gear 16 and the 6th bevel gear 17, the diameter of described front-wheel 2 is 8 ~ 12 times of diameter of the 6th bevel gear 17.
Described the first joint pin 10 is at least two, and described the second joint pin 15 is at least two.
The straight portion of described rod 6 and the angle of horizontal plane are 0 ° ~ 15 °, and described the first drive link 11 is parallel to each other with the straight portion of described rod 6, and described the second drive link 14 is parallel to each other with the straight portion of described front fork 5.
Operation principle of the present utility model is: user is sitting on seat 3, hand moving Z-shaped rocking bar 8, Z-shaped rocking bar 8 drives the first bevel gear 7 to rotate, the first bevel gear 7 drives the second bevel gear 9, third hand tap gear 12, the 4th bevel gear 13, the 5th bevel gear 16 and the 6th bevel gear 17 to rotate successively, final front-wheel 2 obtains rotational power, realizes the object of advancing or retreating.
Because bevel gear set of the present utility model is more stable than conventional chains, be difficult for becoming flexible, so saved tightening device, simplify Wheelchair structure; In addition, bevel gear can not be ruptured, and has ensured the reliability of brake.
Foregoing description only proposes as the enforceable technical scheme of this utility model, not as the Single restriction condition to its technical scheme itself.
Claims (4)
1. a hand-rail type Bevel Gear Transmission wheelchair, comprise two trailing wheels, a front-wheel and be erected at trailing wheel and front-wheel on vehicle frame, vehicle frame comprises seat, foot holder and front fork, it is characterized in that: described front fork top is provided with rod, on the end of rod, choose and be provided with the first bevel gear and Z-shaped rocking bar, the first bevel gear and Z-shaped rocking bar are coupling, the top of described rod is provided with the first drive link by the first joint pin, the first drive link is arranged on the top of the first joint pin by bearing, the front of described front fork is provided with the second drive link by the second joint pin, the second drive link is arranged on the top of the second joint pin by bearing, the two ends of described the first drive link are separately installed with the second bevel gear and third hand tap gear, the top and bottom of described the second drive link are separately installed with the 4th bevel gear and the 5th bevel gear, described front axle is connected to the 6th bevel gear, described the first bevel gear is connected with the second bevel gear is intermeshing, described third hand tap gear is with the 4th bevel gear is intermeshing is connected, described the 5th bevel gear is with the 6th bevel gear is intermeshing is connected.
2. hand-rail type Bevel Gear Transmission wheelchair according to claim 1, it is characterized in that: the length of described Z-shaped rocking bar is 3 ~ 5 times of described the first bevel gear diameter, the diameter of described the first bevel gear is 1.2 ~ 1.5 times of diameter of the second bevel gear, the equal diameters of described the second bevel gear, third hand tap gear, the 4th bevel gear, the 5th bevel gear and the 6th bevel gear, the diameter of described front-wheel is 8 ~ 12 times of diameter of the 6th bevel gear.
3. hand-rail type Bevel Gear Transmission wheelchair according to claim 1, is characterized in that: described the first joint pin is at least two, described the second joint pin is at least two.
4. hand-rail type Bevel Gear Transmission wheelchair according to claim 1, it is characterized in that: the straight portion of described rod and the angle of horizontal plane are 0 ° ~ 15 °, the straight portion of described the first drive link and described rod is parallel to each other, and the straight portion of described the second drive link and described front fork is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320820675.1U CN203647605U (en) | 2013-12-15 | 2013-12-15 | Hand-operated type bevel gear drive wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320820675.1U CN203647605U (en) | 2013-12-15 | 2013-12-15 | Hand-operated type bevel gear drive wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203647605U true CN203647605U (en) | 2014-06-18 |
Family
ID=50914051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320820675.1U Expired - Fee Related CN203647605U (en) | 2013-12-15 | 2013-12-15 | Hand-operated type bevel gear drive wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203647605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112515867A (en) * | 2020-12-04 | 2021-03-19 | 李彬鑫 | Medical postoperative rehabilitation wheelchair |
-
2013
- 2013-12-15 CN CN201320820675.1U patent/CN203647605U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112515867A (en) * | 2020-12-04 | 2021-03-19 | 李彬鑫 | Medical postoperative rehabilitation wheelchair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |