CN210542118U - Flat push type lever driving device suitable for wheelchair and wheelchair - Google Patents
Flat push type lever driving device suitable for wheelchair and wheelchair Download PDFInfo
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- CN210542118U CN210542118U CN201920608475.7U CN201920608475U CN210542118U CN 210542118 U CN210542118 U CN 210542118U CN 201920608475 U CN201920608475 U CN 201920608475U CN 210542118 U CN210542118 U CN 210542118U
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Abstract
The utility model provides a flat push type lever driving device suitable for a wheelchair, which relates to the technical field of wheelchair equipment and comprises a ratchet and pawl transmission mechanism, a fixed base plate and a lever; the ratchet wheel and pawl transmission mechanism comprises a bidirectional ratchet wheel and a bidirectional pawl, the bidirectional ratchet wheel is rotationally connected to the fixed substrate through a central shaft, and the middle part of the bidirectional pawl is rotationally connected to the fixed substrate close to the side of the bidirectional ratchet wheel; the lower part of the lever is fixedly connected to the fixed substrate, and the lever is provided with an operation mechanism for operating the swing of the bidirectional pawl. The utility model also provides a flat push type lever drive wheelchair, including chair frame 15, chair wheelset and two aforementioned flat push type wheelchair drive arrangement. The utility model discloses utilize two-way ratchet and two-way pawl transmission, turn into the revolving force of two-way ratchet with the flat push-force of arm through the lever, it has advantages such as simple structure, convenient to use, laborsaving high efficiency.
Description
Technical Field
The utility model relates to the technical field of wheelchair equipment, in particular to a flat push type lever driving device suitable for a wheelchair. The utility model also relates to a flat push type lever drive wheelchair.
Background
The wheelchair is a commonly-used nursing device and is widely applied to the fields of medical treatment and old age. Wheelchairs of the prior art include manually driven wheelchairs and electrically driven wheelchairs. Since electrically driven wheelchairs are too expensive to be used for patients to get on the ground, manually driven wheelchairs are often used in the market. In the manually driven wheelchair, hand-push wheels are arranged on the wheels of the wheelchair, and when the manually driven wheelchair is used, a patient needs to push the hand-push wheels with arms to drive the wheelchair to move forward or backward. Generally, the arm needs to be driven by a large force, and when a patient uses the arm to drive the wheelchair for a long time, strain and strain can be caused to muscles of the shoulder, waist, chest and the like of the user, so that diseases such as scapulohumeral periarthritis, cervical spondylosis, lumbar disc herniation and the like can be caused.
Disclosure of Invention
The utility model aims to solve the technical problem that the flat push type lever driving device suitable for the wheelchair is simple in structure, high in transmission efficiency and labor-saving, aiming at the defects of the prior art.
The utility model aims to solve another technical problem of providing a horizontal push type lever driving wheelchair adopting the horizontal push type lever driving device.
The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to a flat push type lever drive suitable for wheelchair, its characteristics are: the device comprises a ratchet wheel and pawl transmission mechanism, a fixed substrate and a lever;
the ratchet wheel and pawl transmission mechanism comprises a bidirectional ratchet wheel and a bidirectional pawl, the bidirectional ratchet wheel is rotationally connected to the fixed substrate through a central shaft, the bidirectional pawl comprises a pawl body, two ends of the pawl body are respectively and fixedly provided with a ratchet tooth corresponding to the bidirectional ratchet wheel, and the middle part of the bidirectional pawl is rotationally connected to the fixed substrate close to the side of the bidirectional ratchet wheel;
the lower part of the lever is fixedly connected to the fixed substrate, and the lever is provided with an operation mechanism for operating the swing of the bidirectional pawl.
Above the utility model relates to a flat push type lever drive suitable for wheelchair, its further preferred technical scheme or technical characterstic are: the control mechanism comprises a brake handle and a brake cable, the brake handle is mounted on the upper portion of the lever and fixedly connected with one end of the bidirectional pawl through the brake cable, an elastic reset element is fixedly arranged at the other end of the bidirectional pawl, one end of the elastic reset element is fixedly connected to the bidirectional pawl, and the other end of the elastic reset element is fixedly connected to the fixed substrate.
Above the utility model relates to a flat push type lever drive suitable for wheelchair, its further preferred technical scheme or technical characterstic are: the elastic reset element is a reset tension spring.
Above the utility model relates to a flat push type lever drive suitable for wheelchair, its further preferred technical scheme or technical characterstic are: and a horse riding buckle for controlling the moving route of the brake cable is fixedly arranged on the fixed base plate.
Above the utility model relates to a flat push type lever drive suitable for wheelchair, its further preferred technical scheme or technical characterstic are: the bidirectional ratchet wheel comprises a bearing plate and two unidirectional ratchet wheels, the two unidirectional ratchet wheels are respectively and fixedly connected to the two sides of the bearing plate, and the gear teeth of the two unidirectional ratchet wheels are arranged in a reverse direction in the rotating direction. The bidirectional ratchet wheel can also be directly processed to obtain an integrated bidirectional ratchet wheel or be formed by compounding a plurality of unidirectional ratchet wheels.
Above the utility model relates to a flat push type lever drive suitable for wheelchair, its further preferred technical scheme or technical characterstic are: the flat push type lever driving device is further provided with a protective shell, the protective shell is fixedly connected with the fixed base plate, and a mounting groove for the lever to penetrate through is formed in the protective shell.
Above the utility model relates to a flat push type lever drive suitable for wheelchair, its further preferred technical scheme or technical characterstic are: the bidirectional ratchet is provided with a matched ratchet fixing seat, and the bidirectional ratchet is fixedly installed on the ratchet fixing seat.
The utility model discloses still through the flat push type lever drive wheelchair that adopts aforementioned flat push type lever drive arrangement, its characteristics are: the wheelchair comprises a chair frame, a chair wheel set and two flat push type wheelchair driving devices according to the technical scheme, wherein the chair wheel set comprises two driving wheels, the driving wheels are rotatably arranged on the chair frame, a connecting plate is fixedly arranged at the wheel shaft of the driving wheels, a ratchet wheel fixing seat of the flat push type wheelchair driving device is fixedly arranged on the connecting plate, and the wheel shaft axis of the driving wheels is collinear with the axis of a bidirectional ratchet wheel. The ratchet wheel fixer and the wheelchair can be fixed by bolts or by a magnet adsorption mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the horizontal pushing type lever driving device suitable for the wheelchair of the utility model utilizes the transmission of the bidirectional ratchet wheel and the bidirectional pawl to convert the horizontal pushing force of the arm into the rotating force of the bidirectional ratchet wheel through the lever, and the driving is convenient, labor-saving and efficient; the engaging direction of the bidirectional pawl and the bidirectional ratchet wheel can be switched by the control handle on the lever, so that the stress direction of the bidirectional ratchet wheel is changed, the advancing direction of the wheelchair is convenient to control, the bidirectional pawl can automatically reset through the elastic resetting element, and the wheelchair is simple in structure and convenient to use.
(2) The utility model discloses a flat push type lever drive wheelchair utilizes the marching forward or retreating of lever principle drive wheelchair through the flat push type lever drive arrangement on two action wheels to can also realize the turn through the speed difference that changes the both sides action wheel, have and turn to advantages such as nimble, convenient to use, laborsaving high efficiency.
Drawings
Fig. 1 is a schematic structural view of a horizontal push type lever driving device suitable for a wheelchair according to the present invention;
fig. 2 is an exploded view of the horizontal push type lever driving device for a wheelchair according to the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
FIG. 4 is a schematic view of a mounting structure of the riding buckle;
FIG. 5 is a schematic diagram of an explosion structure of the bidirectional ratchet;
FIG. 6 is a schematic structural view of a bi-directional pawl;
FIG. 7 is a schematic view of a lever-actuated wheelchair of the flat push type;
fig. 8 is a schematic structural view of the connection plate.
In the figure, 1 is a fixed base plate, 2 is a lever, 3 is a bidirectional ratchet wheel, 4 is a bidirectional pawl, 5 is a central shaft, 6 is a brake handle, 7 is a brake cable, 8 is a brake bean, 9 is an anti-skidding sleeve, 10 is a return tension spring, 11 is a riding buckle, 12 is a protective shell, 13 is a ratchet wheel fixed seat, 14 is a bearing seat, 15 is a chair frame, 16 is a driving wheel, and 17 is a connecting plate.
Detailed Description
The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
Embodiment 1, referring to fig. 1, 2 and 3, a flat push type lever driving apparatus suitable for a wheelchair includes a ratchet and pawl transmission mechanism, a fixed base plate 1 and a lever 2;
the ratchet wheel and pawl transmission mechanism comprises a bidirectional ratchet wheel 3 and a bidirectional pawl 4, the bidirectional ratchet wheel 3 is rotationally connected to the fixed substrate 1 through a central shaft 5, the bidirectional pawl 4 comprises a pawl body, two ends of the pawl body are respectively and fixedly provided with a ratchet tooth corresponding to the bidirectional ratchet wheel 3, and the middle part of the bidirectional pawl 4 is rotationally connected to the fixed substrate 1 close to the bidirectional ratchet wheel 3; the bidirectional pawl 4 is an integrated rigid piece, and the middle part of the bidirectional pawl 4 is rotationally connected to the fixed base plate 1 through a bolt.
The lower part of the lever 2 is fixedly connected to the fixed base plate 1, and the lever 2 is provided with an operation mechanism for operating the swing of the bidirectional pawl 4. The lower part of the lever 2 can be fixedly connected on the fixed base plate 1 through a fixed metal plate.
The flat push type lever driving device suitable for a wheelchair according to embodiment 2 and embodiment 1: the control mechanism comprises a brake handle 6 and a brake cable 7, the brake handle 6 is installed on the upper portion of the lever 2, the brake handle 6 is fixedly connected with one end of the bidirectional pawl 4 through the brake cable 7, the other end of the bidirectional pawl 4 is fixedly provided with an elastic reset element, one end of the elastic reset element is fixedly connected onto the bidirectional pawl 4, and the other end of the elastic reset element is fixedly connected onto the fixed substrate 1. Two-way pawl 4 rotates to be connected in the side top of fixed baseplate 1, the one end of two-way pawl 4 is located the top of two-way ratchet 3, the other end of two-way pawl 4 is located the side of two-way ratchet 3, this serving of two-way pawl 4 that is located the top is seted up and is supplied the mounting hole that brake cable 7 passed, brake cable 7 passes the mounting hole and the brake bean 8 of 7 length of brake cable is adjusted in the installation on brake cable 7, brake bean 8 can also play and block the effect and prevent 7 roll-off mounting holes of brake cable. An anti-slip sleeve 9 can be mounted on the lever 2.
In a flat push type lever driving apparatus for a wheelchair according to embodiment 3, embodiment 1 or 2: the elastic reset element is a reset tension spring 10. The ratchet teeth of the bidirectional pawl 4 positioned at the side of the bidirectional ratchet 3 can be pulled out from the bidirectional ratchet 3 by the return tension spring 10, and the ratchet teeth of the bidirectional pawl 4 positioned above the bidirectional ratchet 3 are clamped into the bidirectional ratchet 3.
A flat push type lever driving apparatus for a wheelchair according to embodiment 4, embodiment 1, or embodiment 2 or 3: referring to fig. 4, a riding buckle 11 for controlling the moving route of the brake cable 7 is fixedly mounted on the fixed base plate 1. The saddle buckle 11 can be fixedly connected right above the bidirectional ratchet 3, and the moving path of the brake cable 7 is limited by the saddle buckle 11, so that the ratchet teeth of the bidirectional pawl 4 positioned above can be conveniently pulled out of the bidirectional ratchet 3 through the brake cable 7.
Embodiment 5 and any one of embodiments 1 to 4, wherein the lever driving device of the flat push type is adapted to a wheelchair: referring to fig. 5 and 6, the bidirectional ratchet 3 includes a bearing plate and two unidirectional ratchets, the two unidirectional ratchets are respectively and fixedly connected to two sides of the bearing plate, and the gear teeth of the two unidirectional ratchets are arranged in opposite directions. Two groups of gear teeth on the bidirectional ratchet wheel 3 are respectively a forward-rotation gear tooth for driving the wheelchair to move forwards and a backward-rotation gear tooth for driving the wheelchair to move backwards, the ratchet teeth of the bidirectional pawl 4 positioned above the bidirectional ratchet wheel 3 are matched with the forward-rotation gear teeth for use, and the ratchet teeth of the bidirectional pawl 4 positioned on the side of the bidirectional ratchet wheel 3 are matched with the backward-rotation gear teeth for use. The one-way ratchet wheel with the positive gear teeth can be arranged close to the driving wheel.
When the wheelchair is used, a patient sits on the wheelchair, holds the brake handles 6 with both hands, loosens the brake handles 6 on the two levers 2, the bidirectional pawl 4 clamps the ratchet teeth of the bidirectional pawl 4 positioned above into the positive rotating teeth of the bidirectional ratchet 3 under the action of the reset tension spring 10, and the manual force pushes the lever 2 forwards to drive the bidirectional pawl 4 to drive the bidirectional ratchet 3 to rotate forwards, so that the wheelchair rotates forwards; when the lever 2 is reset backwards, the upper ratchet teeth of the bidirectional pawl 4 press the positive gear teeth to be re-engaged into the positive gear teeth against the pulling force of the reset tension spring 10. When the wheelchair needs to retreat, the brake handle 6 is tightly held, the brake cable 7 pulls out the ratchet teeth of the bidirectional pawl 4 positioned above, the ratchet teeth of the bidirectional pawl 4 positioned on the side are clamped into the counter-rotating gear teeth of the bidirectional ratchet wheel 3, and the lever 2 is pushed backwards by manpower to enable the bidirectional pawl 4 to drive the bidirectional ratchet wheel 3 to rotate backwards so as to realize the backward movement of the wheelchair; when the lever 2 is reset forwards, the ratchet teeth of the bidirectional pawl 4 positioned on the side extrude the anti-rotation gear teeth to overcome the resistance of the brake cable and then are meshed into the anti-rotation gear teeth again, and the length of the brake cable 7 is adjusted in advance through the brake bean 8. When the wheelchair needs to turn, the travel of the driving wheels on the left side and the right side needs to be controlled through the horizontal push type lever driving device, so that speed difference is generated, and the turning is realized. When the wheelchair needs to stop, both hands can tightly hold or loosen the brake handles 6 according to the movement direction of the wheelchair, and the brake is realized by utilizing the reverse impulsive force.
Claims (8)
1. The utility model provides a flat push type lever drive suitable for wheelchair which characterized in that: the device comprises a ratchet wheel and pawl transmission mechanism, a fixed substrate and a lever;
the ratchet wheel and pawl transmission mechanism comprises a bidirectional ratchet wheel and a bidirectional pawl, the bidirectional ratchet wheel is rotationally connected to the fixed substrate through a central shaft, the bidirectional pawl comprises a pawl body, two ends of the pawl body are respectively and fixedly provided with a ratchet tooth corresponding to the bidirectional ratchet wheel, and the middle part of the bidirectional pawl is rotationally connected to the fixed substrate close to the side of the bidirectional ratchet wheel;
the lower part of the lever is fixedly connected to the fixed substrate, and the lever is provided with an operation mechanism for operating the swing of the bidirectional pawl.
2. The lever driving apparatus of a flat push type for a wheelchair as claimed in claim 1, wherein: the control mechanism comprises a brake handle and a brake cable, the brake handle is mounted on the upper portion of the lever and fixedly connected with one end of the bidirectional pawl through the brake cable, an elastic reset element is fixedly arranged at the other end of the bidirectional pawl, one end of the elastic reset element is fixedly connected to the bidirectional pawl, and the other end of the elastic reset element is fixedly connected to the fixed substrate.
3. The lever driving apparatus of the flat push type for a wheelchair as claimed in claim 2, wherein: the elastic reset element is a reset tension spring.
4. The lever driving apparatus of the flat push type for a wheelchair as claimed in claim 2, wherein: and a horse riding buckle for controlling the moving route of the brake cable is fixedly arranged on the fixed base plate.
5. The lever driving apparatus of a flat push type for a wheelchair as claimed in claim 1, wherein: the bidirectional ratchet wheel comprises a bearing plate and two unidirectional ratchet wheels, the two unidirectional ratchet wheels are respectively and fixedly connected to the two sides of the bearing plate, and the gear teeth of the two unidirectional ratchet wheels are arranged in a reverse direction in the rotating direction.
6. The lever driving apparatus of a flat push type for a wheelchair as claimed in claim 1, wherein: the flat push type lever driving device is further provided with a protective shell, the protective shell is fixedly connected with the fixed base plate, and a mounting groove for the lever to penetrate through is formed in the protective shell.
7. The lever driving apparatus of a flat push type for a wheelchair as claimed in claim 1, wherein: the bidirectional ratchet is provided with a matched ratchet fixing seat, and the bidirectional ratchet is fixedly installed on the ratchet fixing seat.
8. A wheelchair, characterized by: the push-down type lever driving device comprises a chair frame, a chair wheel group and two push-down type lever driving devices as claimed in any one of claims 1 to 7, wherein the chair wheel group comprises two driving wheels, the driving wheels are rotatably arranged on the chair frame, a connecting plate is fixedly arranged at the wheel shafts of the driving wheels, ratchet wheel fixing seats of the push-down type lever driving device are fixedly arranged on the connecting plate, and the wheel shaft axes of the driving wheels are collinear with the axes of the bidirectional ratchet wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920608475.7U CN210542118U (en) | 2019-04-29 | 2019-04-29 | Flat push type lever driving device suitable for wheelchair and wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920608475.7U CN210542118U (en) | 2019-04-29 | 2019-04-29 | Flat push type lever driving device suitable for wheelchair and wheelchair |
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| Publication Number | Publication Date |
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| CN210542118U true CN210542118U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920608475.7U Active CN210542118U (en) | 2019-04-29 | 2019-04-29 | Flat push type lever driving device suitable for wheelchair and wheelchair |
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| CN (1) | CN210542118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109938939A (en) * | 2019-04-29 | 2019-06-28 | 江苏苏云医疗器材有限公司 | Flat push lever driving device and wheelchair suitable for wheelchair |
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2019
- 2019-04-29 CN CN201920608475.7U patent/CN210542118U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109938939A (en) * | 2019-04-29 | 2019-06-28 | 江苏苏云医疗器材有限公司 | Flat push lever driving device and wheelchair suitable for wheelchair |
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