CN102240240A - Balance-adjustable wheelchair - Google Patents
Balance-adjustable wheelchair Download PDFInfo
- Publication number
- CN102240240A CN102240240A CN2011101895871A CN201110189587A CN102240240A CN 102240240 A CN102240240 A CN 102240240A CN 2011101895871 A CN2011101895871 A CN 2011101895871A CN 201110189587 A CN201110189587 A CN 201110189587A CN 102240240 A CN102240240 A CN 102240240A
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- China
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- transmission shaft
- bevel gear
- power transmission
- hack lever
- wheelchair
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Abstract
The invention discloses a balance-adjustable wheelchair comprising a chair rack, a bull wheel, a steering wheel and a balance adjusting device, wherein the balance adjusting device comprises a transmission shaft, a crank, a rear rack rod, a first bevel gear, a second bevel gear and a long nut; the transmission shaft and the rear rack rod are mutually vertical and are respectively supported on the chair rack by bearings; the crank and the first bevel gear are respectively installed on two ends of the transmission shaft; the second bevel gear is installed on the upper end of the rear rack rod and is meshed with the first bevel gear; the rear rack rod is provided with a thread; and the long nut is fixed on the big axle and is screwed to the thread part of the rear rack rod. The wheelchair has the advantages that the gravity of a seat is regulated by the balance adjusting device to keep the balance of the seat; and the structure is simple and space saving is achieved.
Description
Technical field
The present invention relates to a kind of wheelchair, be specifically related to a kind of wheelchair of adjustable and balancing.
Background technology
Wheelchair is very useful for people with disability, old people handicapped but that upper limb is strong, for their life provides great convenience.Along with the design of the progressive wheelchair of Machine Manufacturing Technology more becomes flexible, laborsaving, light, comfortable, various electric wheelchairs have also appearred, and greatly facilitate the people's who loses ability to act life, and its serviceability is improved a lot.
But the ability that existing wheelchair safety, road conditions adapt to does not have significant progress.Though wheelchair is current for convenience, people are in construction, when repairing the roads bridge formation, road pavement, step, slope etc. have been done to relax and have been handled, some places have also increased special-purpose wheelchair access, but wheelchair is because the restriction of self structure, still be easy out-shift of gravity center when on these slopes, travelling, occur rolling forward or the phenomenon of overturning backward, security incident takes place easily.
Summary of the invention
The defective that the objective of the invention is out-shift of gravity center in order to solve existing wheelchair and to travel on the slope provides a kind of wheelchair of adjustable and balancing.
In order to achieve the above object, the invention provides a kind of wheelchair, comprise chair frame, bull wheel, deflecting roller and balance regulator, described balance regulator comprises power transmission shaft, crank, back hack lever, first bevel gear, second bevel gear and long nut; Described balance regulator comprises power transmission shaft, crank, back hack lever, first bevel gear, second bevel gear and long nut; Described power transmission shaft also is supported on the chair frame by bearing respectively with the back hack lever is vertical mutually; The described crank and first bevel gear are installed on the power transmission shaft two ends respectively; Described second bevel gear is installed on hack lever upper end, back, and is meshed with above-mentioned first bevel gear; Described back hack lever is provided with screw thread; Described long nut is fixed on the big wheel shaft and is rotatably connected in the threaded portion of back hack lever.
Further improvement of the present invention is the handrail below of described chair frame also is provided with drive-shaft tunnel, power transmission shaft is set in the drive-shaft tunnel, and the power transmission shaft two supports is being connected on the described bearing of chair frame.Crank is collapsible crank, comprises slot part and handle, and the slot part both sides are respectively equipped with and power transmission shaft and the suitable groove of handle, and an end of power transmission shaft and handle places corresponding groove respectively and is rotationally connected by bearing pin and slot part.Back hack lever is supported on the chair frame by the two bearings that is connected chair frame rear portion.Screw thread on the back hack lever is the trapezoidal thread with self-locking property.Wherein, the long nut outside is provided with rest pad, and rest pad is provided with the hole that contains keyway, and big wheel shaft on rest pad, is provided with corresponding keyway by this hole cross-under at the position of corresponding cross-under, and big wheel shaft is connected with described hole key; Both sides at the corresponding cross-under of big wheel shaft position are respectively equipped with screw thread, and spinning respectively on this two screw thread, it screws the nut of direction towards rest pad.
Wheelchair of the present invention has the following advantages: the balance of regulating wheelchair by the balance regulator that is provided with at first, make it after the climb and fall center of gravity, to move or before change when overturning takes place, the center of gravity of wheelchair can in time be adjusted, keep the balance of wheelchair, also can utilize this balance regulator to regulate comfortable sitting posture position when on level road, travelling; The screw thread that spins of back hack lever and nut has self-locking performance in this balance regulator simultaneously, thereby can guarantee stable the stable of seat that keep of lifting position; The crank of transmission balance regulator adopts collapsible crank in addition, saves the space, optimizes structure, can the additional extension wheelchair take volume.
Description of drawings
Fig. 1 is the structural representation of wheelchair of the present invention;
Fig. 2 is the structural representation of balance regulator among Fig. 1;
Fig. 3 is the structural representation of crank among Fig. 2;
Fig. 4 is the structural representation of long nut among Fig. 2;
Among the figure, 1-power transmission shaft, hack lever behind the 2-, 3-long nut, 4-crank, 5-bearing, 6-first bevel gear, 7-second bevel gear, 8-handrail, 9-screw thread, 10-rest pad, the big wheel shaft of 11-, 12-keyway, the 13-slot part, 13a, 13b-groove, 14-handle, 15-driving sleeve, 16-deflecting roller, 17-bearing pin.
The specific embodiment
Below in conjunction with accompanying drawing wheelchair of the present invention is described in detail.
In conjunction with Fig. 1 and Fig. 2, wheelchair of the present invention comprises chair frame, bull wheel, deflecting roller and balance regulator; Wherein balance regulator is installed between the handrail and big wheel shaft of chair frame, comprises power transmission shaft 1, back hack lever 2, long nut 3, crank 4, first bevel gear 6, second bevel gear 7 and drive-shaft tunnel 15.Drive-shaft tunnel 15 is located at chair frame handrail below.Bearing 5 is four, a pair of in twos being installed in respectively on power transmission shaft 1 and the back hack lever 2.Power transmission shaft 1 is placed in the drive-shaft tunnel 15, and its two ends are passed through described bearing 5 parallel supports respectively in handrail 8 belows of chair frame.Back hack lever 2 is vertical with power transmission shaft 1, and is supported on chair frame rear portion by the bearing 5 at two ends.First bevel gear 6 is installed on power transmission shaft 1 rear end, and second bevel gear 7 is installed on hack lever 2 upper ends, back, and both are meshed.Crank 4 is installed on power transmission shaft 1 front end, in conjunction with Fig. 3, crank 4 is collapsible crank, mainly form by slot part 13 and handle 14, slot part 13 both sides are respectively equipped with groove 13a, the 13b suitable with power transmission shaft 1 and handle 14, one end of power transmission shaft 1 and handle 14 places corresponding groove respectively and is rotationally connected by bearing pin 17 and slot part, and this design makes handle 14 and slot part 13 can be folded to power transmission shaft 1 rear end, has saved the space.Back hack lever 2 is provided with the screw portion with screw thread 9, and screw thread 9 is for having the trapezoidal thread of self-locking property; Long nut 3 is fixedlyed connected with big wheel shaft 11, which is provided with corresponding female thread, is screwed in the screw portion of back hack lever 2, when making the relative screw rod oscilaltion of nut, has latching characteristics.In conjunction with Fig. 4, long nut 3 outsides are provided with rest pad 10, and rest pad 10 is provided with the hole that contains keyway that is used for the big wheel shaft 11 of cross-under, and big wheel shaft 11 is set on the long nut 3 by this hole.The both sides at big wheel shaft 11 corresponding cross-under positions are respectively equipped with screw thread, spin respectively on this two screw thread that it screws the nut (not shown) of direction towards rest pad 10, make that back-up block 10 and long nut 3 do not move axially big wheel shaft 11 relatively; Big wheel shaft 11 is provided with corresponding keyway at the position of corresponding cross-under, big wheel shaft 11 is connected with hole key on the rest pad, and big thus wheel shaft 11 is connected in relative rotation with back-up block 10 and long nut 3 realization nothings.
When needs are adjusted the height of wheelchair, drive power transmission shaft 1 rotation by shaking crank 4, give back hack lever 2 via two bevel gear engaged transmission, back hack lever 2 is rotated, and long nut 3 is done oscilaltion relatively, drives the rear portion oscilaltion of chair frame, regulates the height at chair frame rear portion thus.
When wheelchair travels on smooth road surface, make user feel comfortable as chair frame height, just need not do any adjustment.As uncomfortable, user also can rotate crank according to the requirement of oneself, regulates the lifting of back hack lever, makes chair frame height reach the sitting posture position of the most comfortable; When wheelchair is going up a slope, rotate crank, make wheelchair after hack lever rise, rise on the rear portion of chair stand position, thereby the center of gravity of regulating seat is forward, make move after when going up a slope, being difficult for because of center of gravity former thereby make seat after turn over; When wheelchair during at descending, rotate crank, the back hack lever is descended, the rear portion of chair stand position descends, thus the center of gravity of regulating seat is backward, makes to be difficult for turning over because of the former of center of gravity reach thereby before making seat when descending.Under the situation that has the people that accompanies and attends to carry out, need not halt, user can realize that the lifting of back hack lever reaches the purpose of balance self by swing handle under the wheelchair transport condition.
Claims (7)
1. an adjustable equilibrated wheelchair comprises chair frame, bull wheel and deflecting roller, and it is characterized in that: this wheelchair also comprises balance regulator; Described balance regulator comprises power transmission shaft, crank, back hack lever, first bevel gear, second bevel gear and long nut; Described power transmission shaft also is supported on the chair frame by bearing respectively with the back hack lever is vertical mutually; The described crank and first bevel gear are installed on the power transmission shaft two ends respectively; Described second bevel gear is installed on hack lever upper end, back, and is meshed with above-mentioned first bevel gear; Described back hack lever is provided with screw thread; Described long nut is fixed on the big wheel shaft and is rotatably connected in the threaded portion of back hack lever.
2. wheelchair according to claim 1 is characterized in that: the handrail below of described chair frame also is provided with drive-shaft tunnel, and described power transmission shaft is set in this drive-shaft tunnel, and the power transmission shaft two supports is being connected on the described bearing of chair frame.
3. wheelchair according to claim 1 is characterized in that: described crank is collapsible crank.
4. wheelchair according to claim 3, it is characterized in that: described crank comprises slot part and handle, the slot part both sides are respectively equipped with and power transmission shaft and the suitable groove of handle, and an end of power transmission shaft and handle places corresponding groove respectively and is rotationally connected by bearing pin and slot part.
5. wheelchair according to claim 1 is characterized in that: described back hack lever is supported on the chair frame by the two bearings that is connected chair frame rear portion.
6. wheelchair according to claim 1 is characterized in that: the screw thread on the hack lever of described back is the trapezoidal thread with self-locking property.
7. wheelchair according to claim 1, it is characterized in that: the described long nut outside is provided with rest pad, and rest pad is provided with the hole that contains keyway, and big wheel shaft passes through this hole cross-under on rest pad, be provided with corresponding keyway at the position of corresponding cross-under, big wheel shaft is connected with described hole key; Both sides at the corresponding cross-under of big wheel shaft position are respectively equipped with screw thread, and spinning respectively on this two screw thread, it screws the nut of direction towards rest pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189587 CN102240240B (en) | 2011-07-07 | 2011-07-07 | Balance-adjustable wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189587 CN102240240B (en) | 2011-07-07 | 2011-07-07 | Balance-adjustable wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102240240A true CN102240240A (en) | 2011-11-16 |
| CN102240240B CN102240240B (en) | 2013-07-10 |
Family
ID=44958611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110189587 Expired - Fee Related CN102240240B (en) | 2011-07-07 | 2011-07-07 | Balance-adjustable wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102240240B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL127709U1 (en) * | 2018-10-09 | 2019-05-06 | Pare Spolka Z Ograniczona Odpowiedzialnoscia | Mechanism intended for adjustment of a wheelchair gravity centre |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2555821Y (en) * | 2002-04-17 | 2003-06-18 | 蔡文元 | Self-balancing electric wheel-chair |
| CN2868264Y (en) * | 2005-12-21 | 2007-02-14 | 厦门市滨东小学 | Automatic center-of-gravity regulating wheelchair cycle |
| US20080066974A1 (en) * | 2006-09-14 | 2008-03-20 | Pearlman Jonathan L | Personal vehicle |
| US7516984B2 (en) * | 2006-03-08 | 2009-04-14 | Chenghui Tang | Jointed mechanism of electric wheelchair |
| CN201664385U (en) * | 2010-04-08 | 2010-12-08 | 李志学 | Electric wheel chair vehicle capable of assisting the occupant to stand |
| CN202136500U (en) * | 2011-07-07 | 2012-02-08 | 周锦鸿 | Balance adjustable wheel chair |
-
2011
- 2011-07-07 CN CN 201110189587 patent/CN102240240B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2555821Y (en) * | 2002-04-17 | 2003-06-18 | 蔡文元 | Self-balancing electric wheel-chair |
| CN2868264Y (en) * | 2005-12-21 | 2007-02-14 | 厦门市滨东小学 | Automatic center-of-gravity regulating wheelchair cycle |
| US7516984B2 (en) * | 2006-03-08 | 2009-04-14 | Chenghui Tang | Jointed mechanism of electric wheelchair |
| US20080066974A1 (en) * | 2006-09-14 | 2008-03-20 | Pearlman Jonathan L | Personal vehicle |
| CN201664385U (en) * | 2010-04-08 | 2010-12-08 | 李志学 | Electric wheel chair vehicle capable of assisting the occupant to stand |
| CN202136500U (en) * | 2011-07-07 | 2012-02-08 | 周锦鸿 | Balance adjustable wheel chair |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL127709U1 (en) * | 2018-10-09 | 2019-05-06 | Pare Spolka Z Ograniczona Odpowiedzialnoscia | Mechanism intended for adjustment of a wheelchair gravity centre |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102240240B (en) | 2013-07-10 |
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Granted publication date: 20130710 Termination date: 20150707 |
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