CN101119874A - Wheelchair with telescopic anti-tip wheel - Google Patents
Wheelchair with telescopic anti-tip wheel Download PDFInfo
- Publication number
- CN101119874A CN101119874A CNA2005800361511A CN200580036151A CN101119874A CN 101119874 A CN101119874 A CN 101119874A CN A2005800361511 A CNA2005800361511 A CN A2005800361511A CN 200580036151 A CN200580036151 A CN 200580036151A CN 101119874 A CN101119874 A CN 101119874A
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- China
- Prior art keywords
- wheelchair
- oscillating type
- type lamp
- lamp bracket
- turning wheel
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Abstract
A wheelchair has a base and a seat assembly, the base having drive wheels and caster wheels, the seat assembly being readily removable and replaceable to convert the wheelchair from a rear wheel drive configuration to a front wheel drive configuration, and from a front wheel drive configuration to a rear wheel drive configuration.
Description
Association request
That the application requires to submit on October 21st, 2004, denomination of invention is the U.S. Provisional Patent Application No.60/620 of " wheelchair that can change ", 942 preceence between f-w-d and back-wheel drive.The application also requires U.S. Provisional Patent Application No.60/621 submission on October 22nd, 2004, denomination of invention " wheelchair with flexible anti-turning wheel ", 431 preceence.
Technical field
The present invention relates to a kind of wheelchair.
Background technology
Wheelchair usually is designed to have a pair of front-wheel and pair of rear wheels.Usually, electric wheelchair is a kind of in three kinds of f-w-d, back-wheel drive and middle wheel drive.Wheelchair usually is equipped with the anti-turning wheel that prevents the wheelchair overturning.Some wheelchairs are equipped with a plurality of lamp and a plurality of steering indicating lights of travelling.
Summary of the invention
According to the present invention, a kind of wheelchair is provided, this wheelchair has underframe and preceding anti-turning wheel assembly, and wherein said anti-turning wheel assembly is recoverable when the obstacle collision that is run into by wheelchair, but it remains in extended position when wheelchair turns forward.
A kind of wheelchair also is provided according to the present invention, this wheelchair has underframe and preceding anti-turning wheel assembly, wherein said anti-turning wheel assembly comprises anti-turning wheel, anti-turning wheel is mounted to and is in extended position forward in course of normal operation, and should anti-turning wheel when the collision of the obstacle that run into by wheelchair along the longitudinal axis towards after direction regain.Anti-turning wheel is mounted to when it is subjected to collision along y direction power and can regains easily, but when anti-turning wheel was subjected to the longitudinal axis collision of power of one angle being arranged, it remained on extended position.
Also provide a kind of wheelchair, this wheelchair to have oscillating type lamp installation system according to the present invention, it comprises the oscillating type lamp bracket of receiving element being installed and being used to install one or more lamps.The oscillating type lamp bracket is mounted to rotation when the obstacle collision that is run into by wheelchair.
Also provide a kind of wheelchair, this wheelchair to have oscillating type lamp installation system according to the present invention, it comprises the oscillating type lamp bracket of receiving element being installed and being used to install one or more lamps, and the oscillating type carriage is mounted to rotation when the obstacle collision that is run into by wheelchair.The oscillating type carriage is mounted to and can forwards or rearward rotates, and the lamp installation system is configured to, and generation makes the oscillating type lamp bracket turn back to the resistance at center position place when the oscillating type lamp bracket rotates forward or backward.Installation system comprises the hub that is installed in the receiving element, and receiving element has camb contour in the upper end, and hub has camb contour in the bottom.Utilize spring, hub is engaged with receiving element is installed, compression spring wherein owing to the rotation of oscillating type lamp bracket, thus make the oscillating type lamp bracket turn back to the center position place.
Those skilled in the art with reference to the accompanying drawings will be more apparent to various purposes of the present invention and advantage with following detailed description of the preferred embodiment.
Description of drawings
Fig. 1 is the schematic elevational view of the wheelchair of f-w-d pattern.
Figure 1A is the schematic elevational view of wheelchair underframe.
Fig. 2 is the perspective schematic view below Fig. 1 wheelchair.
Fig. 3 is the transparent view that is in the anti-turning wheel assembly of extended position.
Fig. 4 is the transparent view that is in the anti-turning wheel assembly of retrieving position.
Fig. 5 is the decomposition diagram of anti-turning wheel assembly.
Fig. 6 is the transparent view of the oscillating type installation system of wheelchair lamp and turnicator.
Fig. 7 is the birds-eye view that is in the oscillating type installation system with the lamp that can swing of center position.
Fig. 8 is that the oscillating type installation system with the lamp that can swing is subjected to producing the birds-eye view that moves after frontal collision.
Fig. 9 is that the oscillating type installation system with the lamp that can swing is subjected to colliding from behind the birds-eye view that generation is afterwards moved.
Figure 10 is the decomposing schematic representation of oscillating type installation system.
Figure 11 is the transparent view similar to Fig. 6, but it is a transparent view from different perspectives.
Figure 12 is the face upwarding view of oscillating type installation system.
Figure 13 is the lateral plan of oscillating type installation system.
Figure 14 is the viewgraph of cross-section of the oscillating type installation system of 14-14 along the line among Figure 13.
The specific embodiment
As Fig. 1, Figure 1A and shown in Figure 2, totally comprise underframe 12 and seat assembly 14 by 10 indicated wheelchairs.Seat assembly comprises seat 16, seat back 18 and optionally rides 20.Underframe 12 comprises chassis 22, drive wheel 24 and castor 26.Totally being comprised by 30 indicated drive wheel swing arms utilizes bolt or any other suitable fastening device to be fixed to gear case 32 on the swing arm 30.Be installed on the gear case is drive motor 34.Drive wheel 24 is installed on the gear case 32.Swing arm 30 can make drive wheel 24 with respect to chassis 22 upper and lower moving, to pivot at pivotal point 36 places.Selectively, wheelchair is provided with the detouchable protector, for example front fender 28A, drive wheel guar plate 28B, siding track protector 28C.
Stop motion mechnism, for example slit 50 and stop pin 51 can be used for limiting the relative position of outer tube 42 and interior pipe 44.In being connected in, shown pin manages on 44, although this pin also can be installed on the outer tube 42.When interior pipe 44 slided in outer tube 42, pin 51 can move on the length of slit 50.Being used for limiter tube 42 all can adopt with any device that the relative position of managing 44 reaches particular range.Anti-turning wheel assembly 40 can comprise tail-bracket 52 and middle carriage 54, is connected on the swing arm 30 will prevent turning wheel assembly 40.More specifically, outer tube 42 is connected on the swing arm 30.As shown in Figure 5, spring 56 is positioned at the inside of pipe 44 and outer tube 42.Spring 56 is connected on the pin 51 or is connected on the interior pipe 44.The rear end of spring 56 is connected on the rear end of outer tube 42.
In operating process, when back-wheel drive wheelchair 10 ran into obstacle, for example curb was managed 44 in anti-turning wheel 46 will make with collision that curb produces and is regained in outer tube 42, and opposite with the application force of spring 56.Be under the situation about turning forward at wheelchair 10, swing arm 30 will be swung with respect to wheelchair chassis 22, and the axis 48 of anti-turning wheel assembly 40 forms acute angle with ground.When managing on 44 in non-axial force is applied to, pipe slides in the outer tube 42 backward in then stoping.In smooth ground-surface driven process, interior pipe 44 is stretched fully owing to spring pressure.Anti-turning wheel 46 is positioned at the place ahead of drive wheel 24, stops suddenly and when turning forward, anti-turning wheel 46 contacts and prevent the wheelchair overturning with ground with convenient wheelchair.Therefore, anti-turning wheel assembly 40 can play the effect of anti-turning-up devices effectively, avoids or suppresses wheelchair overturning forward at least.
In another aspect of this invention, wheelchair is provided with and utilizes the oscillating type installation system to be connected to wheelchair lamp and turning indicator system on the wheelchair 10.As Fig. 6, Figure 11, Figure 13 and shown in Figure 14, lamp system 110 comprises the carriage assembly 114 that can be swung away from.Carriage 116 is fixed in the part of other hope of seat frame or wheelchair 110.Adjustable bracket 118 is connected on the analog bracket 116.Install receiving element 120 have match with connecting element 124 on adjustable bracket 118 be connected and fixed part 122.Hub 128 is positioned at the inside of receiving element 120 with one heart.Swing light cover 133 is installed on the top of hub 128 and receiving element 120.The swing light cover has the oscillating type lamp bracket 130 that is used to keep head lamp 132 and turnicator 134.The lamp that can connect any kind.
As shown in figure 10, hub 128 has camb contour 136 in its lower end.Hub 128 utilizes spring 140, nut 142 and screw 144 that it is engaged with installation receiving element 120.Receiving element 120 is installed is also had camb contour.Hub 128 and receiving element 120 utilize screw 144 and jam nut 142 to keep together becomes an assembly.Spring 140 is subjected to compression to a certain degree all the time.As shown in Figure 7, this structure allow oscillating type lamp bracket 130 remain on the perpendicular center position of adjustable bracket 118 on.As shown in Figure 8, if the lamp assembly is subjected to the collision in the place ahead, then oscillating type lamp bracket 130 rotations, and hub 128 rises along with its camb contour simultaneously.Compression spring 140 is gone back in this rotation, produces to make oscillating type lamp bracket 130 get back to the resistance of center position.In case obstacle disappears, then the compression of spring 140 impels oscillating type lamp bracket 130 to be returned to middle or center position place.Produce opposite phenomenon when as shown in Figure 9, being subjected to rear collision.As shown in figure 12, receiving element 120 is installed is had dovetail webge slot 150, and it is connected with dovetail form piece 152 on the carriage connecting element 124 of carriage 118.Be understandable that, can adopt any connecting device.
Operating principle of the present invention and mode are described in its preferred embodiment.But it should be noted that do not departing from the scope of the present invention under the situation, except mode, also can otherwise implement the present invention according to for example concrete and description.
Claims (17)
1. wheelchair, it has underframe and preceding anti-turning wheel assembly, and when obstacle collision that described anti-turning wheel assembly is run into by described wheelchair, described anti-turning wheel assembly is regained, but described anti-turning wheel assembly remains in extended position when described wheelchair turns forward.
2. wheelchair as claimed in claim 1, wherein said anti-turning wheel assembly comprise the outer tube that receives interior pipe slidably.
3. wheelchair as claimed in claim 2, wherein said interior pipe is positioned at the place ahead of described outer tube, and wherein anti-turning wheel is connected in described interior pipe.
4. wheelchair as claimed in claim 2 comprises stop motion mechnism, is used to limit moving of the interior described interior pipe of described outer tube.
5. wheelchair as claimed in claim 4, wherein said stop motion mechnism comprises slit and stop pin.
6. wheelchair, it has underframe and preceding anti-turning wheel assembly, described anti-turning wheel assembly comprises anti-turning wheel, anti-turning wheel is mounted in course of normal operation and is in extended position forward, and when the obstacle that is run into by described wheelchair collides, described anti-turning wheel along the longitudinal axis towards after direction regain, wherein said anti-turning wheel is mounted to when it is subjected to impact along the power of described y direction and can regains easily, but when described anti-turning wheel was subjected to the described longitudinal axis collision of power of one angle being arranged, anti-turning wheel remained on extended position.
7. wheelchair as claimed in claim 6, wherein said anti-turning wheel assembly comprise the outer tube that receives interior pipe slidably.
8. wheelchair as claimed in claim 7, wherein said interior pipe is positioned at the place ahead of described outer tube, and wherein anti-turning wheel is connected in described interior pipe.
9. wheelchair as claimed in claim 6 comprises stop motion mechnism, is used to limit moving of the interior described interior pipe of described outer tube.
10. wheelchair as claimed in claim 9, wherein said stop motion mechnism comprises slit and stop pin.
11. wheelchair, it has oscillating type lamp installation system, this oscillating type lamp installation system comprises the oscillating type lamp bracket of receiving element being installed and being used to install one or more lamps, and described oscillating type lamp bracket is mounted to rotation when the obstacle collision that is run into by described wheelchair.
12. being mounted to, wheelchair as claimed in claim 11, wherein said oscillating type lamp bracket can forwards or rearward rotate.
13. being configured to produce when described oscillating type lamp bracket rotates, wheelchair as claimed in claim 11, wherein said lamp installation system make described oscillating type lamp bracket turn back to the resistance at center position place.
14. wheelchair as claimed in claim 13, wherein said oscillating type lamp bracket is mounted to forwards or rotation rearward, and wherein said oscillating type lamp bracket forwards or rearward rotation produce and to make described oscillating type lamp bracket turn back to the resistance at center position place.
15. wheelchair as claimed in claim 13, wherein said installation system comprises the hub that is installed in the described receiving element, described receiving element has camb contour in the upper end, and described oscillating type lamp bracket has camb contour in the bottom, its medi-spring impels described hub to engage with described installation receiving element, and the rotation of wherein said oscillating type lamp bracket makes described length of spring compressed, thereby makes described oscillating type lamp bracket turn back to the center position place.
16. wheelchair as claimed in claim 15, wherein said oscillating type lamp bracket is mounted to can be forwards or rotation rearward, and wherein said oscillating type lamp bracket forwards or rearward rotation produce and make described oscillating type lamp bracket turn back to the resistance at center position place.
17. wheelchair, this wheelchair has oscillating type lamp installation system, it comprises: receiving element and the oscillating type lamp bracket that is used to install one or more lamps are installed, the oscillating type carriage is mounted to rotation when the obstacle collision that is run into by described wheelchair, described oscillating type lamp bracket is mounted to forwards or rotation rearward, and described lamp installation system is configured to produce when described oscillating type lamp bracket forwards or rearward rotates and makes described oscillating type lamp bracket turn back to the resistance at center position place, and wherein said installation system comprises the hub that is installed in the described receiving element, described receiving element has camb contour in the upper end, and described hub has camb contour in the bottom, its medi-spring makes described hub engage with described installation receiving element, and described spring is compressed in the rotation of wherein said oscillating type lamp bracket, thereby makes described oscillating type lamp bracket turn back to the center position place.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62094204P | 2004-10-21 | 2004-10-21 | |
| US60/620,942 | 2004-10-21 | ||
| US60/621,431 | 2004-10-22 | ||
| US11/254,485 | 2005-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101119874A true CN101119874A (en) | 2008-02-06 |
Family
ID=39055556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800361511A Pending CN101119874A (en) | 2004-10-21 | 2005-10-21 | Wheelchair with telescopic anti-tip wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101119874A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147615A1 (en) * | 2020-01-21 | 2021-07-29 | 广州视源电子科技股份有限公司 | Anti-tipping wheelchair |
-
2005
- 2005-10-21 CN CNA2005800361511A patent/CN101119874A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147615A1 (en) * | 2020-01-21 | 2021-07-29 | 广州视源电子科技股份有限公司 | Anti-tipping wheelchair |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080206 |