CN201939610U - Push-pull rod-driven wheelchair - Google Patents
Push-pull rod-driven wheelchair Download PDFInfo
- Publication number
- CN201939610U CN201939610U CN2011200039681U CN201120003968U CN201939610U CN 201939610 U CN201939610 U CN 201939610U CN 2011200039681 U CN2011200039681 U CN 2011200039681U CN 201120003968 U CN201120003968 U CN 201120003968U CN 201939610 U CN201939610 U CN 201939610U
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- push
- ratchet
- pull bar
- gear
- wheel
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Abstract
The utility model relates to a push-pull rod-driven wheelchair, which belongs to the technical field of wheelchairs and aims to provide a wheelchair which is driven by both hands, is rapid and laborsaving and can be slewed and turned at an original place. The utility model has the technical scheme that: the push-pull rod-driven wheelchair is provided with two sets of driving gears, two sets of rotating gears and two sets of push-pull rods, wherein the two sets of driving gears, the two sets of rotating gears and the two sets of push-pull rods are respectively installed at both sides of a chair, the driving gears are installed on a frame through a gear shaft, each rotating gear and a wheel shaft sleeve of a rear wheel are concentrically connected into a whole, each driving gear and each rotating gear are linked through a chain, each push-pull rod is a long rod, the lower end of each push-pull rod is provided with a push-pull rod shaft hole, the push-pull rod shaft hole is sleeved on a gear shaft of each driving gear, the inner side of each driving gear is provided with a ratchet wheel, the ratchet wheel and a shaft sleeve of each driving gear are concentrically connected into a whole, a pawl is fixed at the lower part of each push-pull rod, and the pawl and the ratchet wheel are engaged. Through the push-pull rod-driven wheelchair, a user can drive the wheelchair through the push-pull rods, and the push-pull rod-driven wheelchair has the advantages of novel structure, labor saving and rapidness, can also be slewed and turned at the original place by pushing the push-pull rods at different speeds or in different directions by both hands and is quite convenient.
Description
Technical field
This utility model relates to a kind of wheelchair with push-pull bar driving walking, belongs to the wheelchair technical field.
Background technology
Wheelchair is widely used in social life, and suffer from disease and the old people of the patient of walking disorder, lower limb disabled, walking disorder etc. all needs wheelchair to help walking.General wheelchair is except being carried out by the nursing staff, and the autonomous mode that drives has two kinds, and a kind of is hand chain wheel drive, and another kind is that the annulus in the hands rotating-wheel outside is hand drive.For hand chain wheel drive mode, sprocket drive is installed in seat the place ahead, need shake sprocket wheel on the other hand, grasp direction on the other hand, two handss can not exchange, the hands that shakes sprocket wheel is easy to fatigue, bad personage is difficult to bear for muscle power, sprocket wheel forms obstacle in seat the place ahead simultaneously, makes that wheelchair can not be the same as indoor use as seat, the wheelchair of this type of drive also exist the inconvenience of turning, can not spot turn defective, in narrow space, use very inconvenience, and since the restriction of structure be difficult to improve.And, then need muscle power more for the annulus handle type of drive outside the hands rotating-wheel, and only be suitable for upper limbs force youngster use preferably, be difficult to wide popularization and application socially.All in all, the wheelchair of these two kinds of type of drive all has big defective, demands the technical staff urgently and improves, with the requirement that adapts to vast user and the needs in market.
The utility model content
Technical problem to be solved in the utility model provide a kind of can with two hand drives, quick, laborsaving, can pivot turn and turn around, both artistic and practical push-pull bar drives wheelchair.
The technical scheme that solves the problems of the technologies described above is:
A kind of push-pull bar drives wheelchair, it comprises vehicle frame, seat, rear wheel, front vehicle wheel, pedal, rear wheel is in the both sides of seat, front vehicle wheel is two universal wheels, lay respectively at the both sides, the place ahead of seat, its improvements are that it also has two cover driven wheels, transmitting gear and push-pull bar are installed in the both sides of seat respectively, driven wheel is installed on the vehicle frame by gear shaft, concentric the connecting as one of wheel axle sleeve of transmitting gear and rear wheel, by the chain link, push-pull bar is a stock between driven wheel and the transmitting gear, there is the push-pull bar axis hole its lower end, the push-pull bar shaft hole sleeve is contained on the gear shaft of driven wheel, in the inboard of driven wheel ratchet is arranged, and ratchet connects as one with the axle sleeve of driven wheel is concentric, the bottom of push-pull bar is fixed with ratchet, and ratchet is meshed with ratchet.
Above-mentioned push-pull bar drives wheelchair, it also has two tumbler gears, and two tumbler gears are installed in the vehicle frame both sides respectively, and driven wheel and tumbler gear are linked by chain, the gear teeth of transmitting gear and tumbler gear directly mesh, or transmitting gear is meshed with chain in the outside of chain.
Above-mentioned push-pull bar drives wheelchair, and the bottom of described push-pull bar is the ratchet sleeve box, and the push-pull bar axis hole is positioned on the outer wall of ratchet sleeve box, and pawl-and-gearing is positioned at the cavity of ratchet sleeve box.
Above-mentioned push-pull bar drives wheelchair, and described ratchet is a strip, and there is pawl axis the centre, and pawl axis is fixed on the ratchet sleeve box wall, and the ratchet tooth is positioned at two ends, ratchet bottom, and the ratchet both upper ends thereof has connecting hole, and connecting hole passes from the opening of ratchet sleeve box.Above-mentioned ratchet can be designed to left and right split-type structural, to make things convenient for the separation of ratchet and pawl.
Above-mentioned push-pull bar drives wheelchair, and the break-in spanner is arranged at the top of described push-pull bar, and the break-in spanner is a strip sheet, and the centre has rotating shaft to be connected with the body of rod of push-pull bar, and the two ends of break-in spanner have pull bar to be connected with the connecting hole of ratchet upper end.
Above-mentioned push-pull bar drives wheelchair, and the ratchet sleeve box wall of described ratchet top has spring eye, and spring is installed in the spring eye, and the spring front end has the decorative pearl on top of an official cap, and the decorative pearl on top of an official cap withstands on the ratchet upper surface.
Above-mentioned push-pull bar drives wheelchair, in a side of vehicle frame brake handle is housed also, and the centre of brake handle has turning cylinder to be connected with vehicle frame, and there is circular brake axle the lower end of brake handle, and brake axle is relative with the front of rear wheel.
Adopt the push-pull bar of this structure to drive wheelchair, user can drive driven wheel, transmitting gear with ratchet, ratchet by push-pull bar, driving wheel at last rotates, push-pull bar both sides push-and-pull simultaneously, gear graduation in addition drives more laborsavingly, and user can also promote push-pull bar with friction speed or different directions by two handss, turn and spot turn, very convenient.This utility model novel structure, laborsaving, quick, easy to use can satisfy numerous wheelchair users' demand, has good economic benefits and social benefit.
Description of drawings
Fig. 1 is an overall structure sketch map of the present utility model;
Fig. 2 is an another kind of structural representation of the present utility model;
Fig. 3 is the structural representation of push-pull bar;
Fig. 4 is the cutaway view that push-pull bar is connected with driven wheel;
Fig. 5 is the ratchet sketch map.
Labelling is as follows among the figure: vehicle frame 1, seat 2, rear wheel 3, front vehicle wheel 4, pedal 5, driven wheel 6, transmitting gear 7, chain 8, gear shaft 9, axle sleeve 10, push-pull bar 11, push-pull bar axis hole 12, ratchet 13, ratchet 14, ratchet sleeve box 15, pawl axis 16, ratchet tooth 17, connecting hole 18, break-in spanner 19, rotating shaft 20, pull bar 21, spring eye 22, spring 23, the decorative pearl on top of an official cap 24, bearing 25, bearing (ball) cover 26, nut 27, opening 28, tumbler gear 29, brake handle 30.
The specific embodiment
Show among the figure that this utility model comprises vehicle frame 1, seat 2, rear wheel 3, front vehicle wheel 4, pedal 5, its structure is identical with general wheelchair.
Fig. 1 shows that improvements of the present utility model are to adopt push-pull bar 11 to drive driven wheel 6, transmitting gear 7, drive wheel at last and rotate.Driven wheel 6, transmitting gear 7 and push-pull bar 11 are two covers, are installed in the both sides of seat 2 respectively.Driven wheel 6 is installed on the vehicle frame 1 by gear shaft 9, and transmitting gear 7 is welded as a whole with the wheel axle sleeve 10 of rear wheel 3, and transmitting gear 7 rotates and can drive the wheel rotation, is linked by chain 8 between driven wheel 6 and the transmitting gear 7.
Fig. 2 has shown another kind of drives structure of the present utility model.The driven wheel 6 among Fig. 1 and the drives structure of transmitting gear 7 make user need promote push-pull bar forward when the driving wheelchair advances, and from the firmly structure of human body, pull back then more laborsavingly and can work lastingly, so this utility model also provides another kind of drives structure on the basis of said structure.Fig. 2 shows that this drives structure has increased tumbler gear 29 in the both sides of wheelchair, and tumbler gear 29 is linked by chain 8 with driven wheel 6, and tumbler gear 29 is connected with transmitting gear 7 more then.Connected mode has two kinds, and a kind of connected mode is to take transmitting gear 7 directly to be meshed with the gear teeth of tumbler gear 29, and promptly tumbler gear 29 is the bidentate wheel, and a side is connected with chain 8, and opposite side is meshed with transmitting gear 7; Another kind of connected mode is the position of transmitting gear 7 between driven wheel 6 and tumbler gear 29, the outside at the chain 8 that connects driven wheel 6 and tumbler gear 29 is meshed with chain 8, this mode does not have special requirement to commutation gear 29, ordinary gear gets final product, and what show among Fig. 2 is exactly this connected mode.After the structure that shows among Fig. 2 had increased tumbler gear 29, user just can pull back push-pull bar 11 advanced wheelchair.
User can be liked according to self, and chain 8 is directly connected driven wheel 6 and transmitting gear 7, perhaps connects by tumbler gear 29, to obtain to promote forward or with pulling two kinds of different method of advances forward.
Show among the figure, the installed inside of driven wheel 6 has ratchet 13, ratchet 13 centers are circular hole, be enclosed within on the gear shaft 9 of driven wheel 6, the axle sleeve 10 of ratchet 13 circumference, one side and driven wheel 6 is welded as and is one, bearing 25 is arranged in the axle sleeve 10, and the front end of gear shaft 9 has bearing (ball) cover 26 and nut 27 lockings.
Show among the figure, push-pull bar 11 is a stock, and the bottom of push-pull bar 11 is a ratchet sleeve box 15, and push-pull bar axis hole 12 is arranged on the outer wall of ratchet sleeve box 15, push-pull bar axis hole 12 is sleeved on the gear shaft 9 of driven wheel 6, ratchet 13 is arranged in the cavity of ratchet sleeve box 15, and ratchet sleeve box 15 also is sleeved on ratchet 14 in the cavity, and ratchet 13 is a strip, there is pawl axis 16 centre, pawl axis 16 is fixed on ratchet sleeve box 15 walls, and ratchet tooth 17 is positioned at two ends, ratchet 13 bottom, and ratchet tooth 17 is meshed with ratchet 14.
Show among the figure, break-in spanner 19 is arranged at the top of push-pull bar 11, and break-in spanner 19 is a strip sheet, and the centre has rotating shaft 20 to be connected with the body of rod of push-pull bar 11, the two ends of break-in spanner 19 have pull bar 21 to be connected with the connecting hole 18 of ratchet 13 upper ends, and connecting hole 18 passes from the opening of ratchet sleeve box 15.Break-in spanner 19 has three positions, and a position is two lateral balances, and this moment, ratchet 13 did not contact with ratchet 14, promotes push-pull bar 11 and is idle running; In addition two positions are that both sides are inclined upwardly respectively, and at this moment the ratchet tooth 17 at ratchet 13 two ends contacts with ratchet 14 respectively, and when promoting push-pull bar 11, ratchet 13 drives ratchets 14 counterclockwise or turn clockwise, and drive wheel and advance or retreat.
Above-mentioned pull bar 21 can be the rigid metal bar, also can be the steel wire rope of flexibility.
Show among the figure, ratchet sleeve box 15 walls of ratchet 13 tops have spring eye 22, and spring 23 is installed in the spring eye 22, and spring 23 front ends have the decorative pearl on top of an official cap 24, the decorative pearl on top of an official cap 24 withstands on ratchet 13 upper surfaces, and spring 23 can make ratchet tooth 17 keep closely contacting with ratchet 14 surfaces with the decorative pearl on top of an official cap 24.
Show among the figure that in a side of vehicle frame 1 brake handle 30 is housed also, the centre of brake handle 30 has turning cylinder to be connected with vehicle frame 1, there is brake axle the lower end of brake handle 30, and brake axle is relative with the front of rear wheel 3.
Work process of the present utility model:
User plays break-in spanner 19 to side plate, then the pull bar 21 of break-in spanner 19 1 sides upwards, the pull bar 21 of opposite side is downward, the ratchet tooth 17 that is positioned to the pull bar 21 of next side is meshed with ratchet 14, at this moment user promotes push-pull bar 11 forward or pulls back push-pull bar 11, then ratchet 13 drives ratchets 14 counterclockwise or turn clockwise, ratchet 14 drives driven wheel 6, driven wheel 6 drives transmitting gear 7 by chain 8, transmitting gear 7 drives wheel and rotates, and wheelchair just can move forwards or backwards.After having increased tumbler gear 29, then pull back push-pull bar 11 wheelchair is advanced, and wheelchair moves backward when promoting push-pull bar 11 forward.
During turning, user can make the push-pull bar 11 of both sides promote just can turn with different speed, or it is moving to stop a thruster, only promotes the push-pull bar 11 of opposite side, and then radius of turn is littler.
When turning around, user can be pulled the break-in spanner 19 of both sides to different directions, push away push-pull bar 11 before the side then, and opposite side post-tensioning push-pull bar 11 can be finished spot turn, and is very convenient.
Claims (7)
1. a push-pull bar drives wheelchair, it comprises vehicle frame [1], seat [2], rear wheel [3], front vehicle wheel [4], pedal [5], rear wheel [3] is in the both sides of seat [2], front vehicle wheel [4] is two universal wheels, lay respectively at the both sides, the place ahead of seat [2], it is characterized in that: it also has two cover driven wheels [6], transmitting gear [7] and push-pull bar [11], be installed in the both sides of seat [2] respectively, driven wheel [6] is installed on the vehicle frame [1] by gear shaft [9], concentric the connecting as one of wheel axle sleeve [10] of transmitting gear [7] and rear wheel [3], link by chain [8] between driven wheel [6] and the transmitting gear [7], push-pull bar [11] is a stock, and there is push-pull bar axis hole [12] its lower end, and push-pull bar axis hole [12] is sleeved on the gear shaft [9] of driven wheel [6], in the inboard of driven wheel [6] ratchet [14] is arranged, concentric the connecting as one of axle sleeve [10] of ratchet [14] and driven wheel [6], the bottom of push-pull bar [11] is fixed with ratchet [13], and ratchet [13] is meshed with ratchet [14].
2. push-pull bar according to claim 1 drives wheelchair, it is characterized in that: it also has two tumbler gears [29], two tumbler gears [29] are installed in vehicle frame [1] both sides respectively, driven wheel [6] is linked by chain [8] with tumbler gear [29], transmitting gear [7] directly meshes with the gear teeth of tumbler gear [29], or transmitting gear [7] is meshed with chain [8] in the outside of chain [8].
3. push-pull bar according to claim 2 drives wheelchair, it is characterized in that: the bottom of described push-pull bar [11] is ratchet sleeve box [15], push-pull bar axis hole [12] is positioned on the outer wall of ratchet sleeve box [15], and ratchet [13] and ratchet [14] are positioned at the cavity of ratchet sleeve box [15].
4. push-pull bar according to claim 3 drives wheelchair, it is characterized in that: described ratchet [13] is a strip, there is pawl axis [16] centre, pawl axis [16] is fixed on ratchet sleeve box [15] wall, ratchet tooth [17] is positioned at ratchet [13] two ends, bottom, and ratchet [13] both upper ends thereof has connecting hole [18].
5. push-pull bar according to claim 4 drives wheelchair, it is characterized in that: break-in spanner [19] is arranged at the top of described push-pull bar [11], break-in spanner [19] is a strip sheet, the centre has rotating shaft [20] to be connected with the body of rod of push-pull bar [11], and the two ends of break-in spanner [19] have pull bar [21] to be connected with the connecting hole [18] of ratchet [13] upper end.
6. push-pull bar according to claim 5 drives wheelchair, it is characterized in that: ratchet sleeve box [15] wall of described ratchet [13] top has spring eye [22], spring [23] is installed in the spring eye [22], and spring [23] front end has the decorative pearl on top of an official cap [24], and the decorative pearl on top of an official cap [24] withstands on ratchet [13] upper surface.
7. push-pull bar according to claim 6 drives wheelchair, it is characterized in that: the side at vehicle frame [1] also is equipped with brake handle [30], the centre of brake handle [30] has turning cylinder to be connected with vehicle frame [1], there is circular brake axle the lower end of brake handle [30], and brake axle is relative with the front of rear wheel [3].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200039681U CN201939610U (en) | 2010-09-07 | 2011-01-07 | Push-pull rod-driven wheelchair |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020519020 | 2010-09-07 | ||
| CN201020519020.7 | 2010-09-07 | ||
| CN2011200039681U CN201939610U (en) | 2010-09-07 | 2011-01-07 | Push-pull rod-driven wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201939610U true CN201939610U (en) | 2011-08-24 |
Family
ID=44466966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200039681U Expired - Fee Related CN201939610U (en) | 2010-09-07 | 2011-01-07 | Push-pull rod-driven wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201939610U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126822A (en) * | 2013-03-14 | 2013-06-05 | 上海理工大学 | Unilateral push rod type free steering type wheelchair |
| CN103126821A (en) * | 2013-03-14 | 2013-06-05 | 上海理工大学 | Bidirectional driving mechanism of unilateral manual-driven wheelchair free to go forward or recede |
| JP2017502810A (en) * | 2014-01-08 | 2017-01-26 | ロビンス， ダグラス ジー．ＲＯＢＩＮＳ， Ｄｏｕｇｌａｓ Ｇ． | wheelchair |
| TWI659733B (en) * | 2018-05-04 | 2019-05-21 | 中山醫學大學 | Wheelchair transmission structure with both turning function and bidirectional output |
-
2011
- 2011-01-07 CN CN2011200039681U patent/CN201939610U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126822A (en) * | 2013-03-14 | 2013-06-05 | 上海理工大学 | Unilateral push rod type free steering type wheelchair |
| CN103126821A (en) * | 2013-03-14 | 2013-06-05 | 上海理工大学 | Bidirectional driving mechanism of unilateral manual-driven wheelchair free to go forward or recede |
| JP2017502810A (en) * | 2014-01-08 | 2017-01-26 | ロビンス， ダグラス ジー．ＲＯＢＩＮＳ， Ｄｏｕｇｌａｓ Ｇ． | wheelchair |
| TWI659733B (en) * | 2018-05-04 | 2019-05-21 | 中山醫學大學 | Wheelchair transmission structure with both turning function and bidirectional output |
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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: 20110824 Termination date: 20130107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |