CN108223714B - A kind of gear of push-chairs three gearbox - Google Patents
A kind of gear of push-chairs three gearbox Download PDFInfo
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- CN108223714B CN108223714B CN201810025049.0A CN201810025049A CN108223714B CN 108223714 B CN108223714 B CN 108223714B CN 201810025049 A CN201810025049 A CN 201810025049A CN 108223714 B CN108223714 B CN 108223714B
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- gear
- cog
- divider
- wheel
- dividers
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1005—Wheelchairs having brakes
- A61G5/1032—Wheelchairs having brakes engaging an element of the drive or transmission, e.g. drive belt, electrodynamic brake
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of push-chairs three to keep off gearbox, including fixing axle (12), is fixed with wheel output cog (10) in fixing axle (12)；Multiple inner planet gears (9) engaged are evenly distributed with outside wheel output cog (10), it is engaged with respectively the first exterior epicyclic gear (7.1) on the outside of each inner planet gear (9), all exterior epicyclic gears (7) are engaged in the same wheel input cog (11)；Axle sleeve (8.1) are equipped in the side far from wheel output cog (10) on the planetary wheel carrier (8), axle sleeve (8.1) is rotatablely connected by second bearing (13.2) and fixing axle (12)；On axle sleeve (8.1), since the side close to wheel output cog (10), it is successively arranged two dividers (6), a divider (4) and three dividers (5)；One divider (4) is equipped with gear changing device (2).The delivery efficiency that the present invention can be used for push-chairs is adjusted, so as to improve the mobility and independence that wheelchair uses, and gearshift adjustment it is stable, conveniently, be not easy failure.
Description
Technical field
The present invention relates to a kind of push-chairs three to keep off gearbox, belongs to variable-ratio push-chairs technical field.
Background technique
Wheelchair is the basic walking-replacing tool helped the elderly, in service system.Variable-ratio wheelchair master currently on the market
It to include push-chairs and electric wheelchair two major classes.At this stage, China's electric wheelchair due to by the level of economic development and maintenance,
The restriction of the factors such as aspect is carried, development has certain limitation.Push-chairs are since it is with sound construction, maintenance letter
Just, the advantages that cheap, easy to carry is the first choice of the majority of consumers all the time.It should be noted that push-chairs master
To advance by Manual-pushing, it is desirable that there is user good upper limb to dominate ability.But general the elderly and deformity of limbs
The physical function of personage is failed or incomplete, and the upper limb of children and women dominate can be it is limited, in addition for short-period used
Its upper limb adaptation time of wheelchair patient is limited, along with the influence in outdoor different places, different gradient, greatly limits user
Delivery efficiency.The Portable Hand-pushing fodder wheelchair gear researched and developed in the world at present is mainly the principle for using for reference multi-speed bicycle,
The scope of activities of wheelchair is realized by transmission gear, driving chain and lever and reaches user labour-saving effect.But it is neglected
A common and vital factor has been omited, that is, has fallen chain problem, user is mostly the elderly and deformity of limbs personage, once it sends out
Raw chain sling, user can only be stranded in the case where that can not obtain extraneous assistance.
Therefore, a kind of Portable Hand-pushing fodder wheelchair three class gear shift box assembly is designed, day common push-chairs are directly assembled to
In, for the elderly of hypofunction, the physical disabilities of afunction, the insufficient children of upper limbs force and women, and in it is short
Phase needs not only to be able to satisfy user's trip requirements using wheelchair patient, improves user's action independence and mobility, and
It can also carry out the time by reducing in certain stroke to reduce the risk for causing damage to user's upper limb, have great
Realistic meaning and practical value.
Summary of the invention
The object of the present invention is to provide a kind of push-chairs three to keep off gearbox.The present invention can be used for push-chairs
Delivery efficiency is adjusted, so as to improve the mobility and independence that wheelchair uses, and gearshift adjustment it is stable, conveniently, be not easy
Failure.
Technical solution of the present invention: a kind of push-chairs three keep off gearbox, its main feature is that: including fixing axle, in fixing axle
It is fixed with wheel output cog；Multiple inner planet gears engaged, each expert are evenly distributed with outside wheel output cog
It is engaged with the first exterior epicyclic gear respectively on the outside of star gear, all exterior epicyclic gears are engaged on the same wheel input cog
It is interior；The inner planet gear and the first exterior epicyclic gear are arranged on the same planetary wheel carrier；The planetary wheel carrier passes through first
Bearing and fixing axle are rotatablely connected；It is equipped with axle sleeve in the side far from wheel output cog on the planetary wheel carrier, axle sleeve passes through
Second bearing and fixing axle are rotatablely connected；On axle sleeve, since close to wheel output cog side, be successively arranged two dividers,
One divider and three dividers；One divider is equipped with gear changing device；It is toothed around on the outside of two dividers, is engaged with and the first layman on the outside of the gear teeth
Co-axially fixed second exterior epicyclic gear of star gear, two dividers outside are additionally provided with second gear positioning protrusion；The second outer planet tooth
Wheel is equipped with the rotation stop groove matched with the rotation stop bolt on a divider；Gear changing device is equipped with and is respectively used to and second gear positioning protrusion
The second gear limited block to offset with three dividers and three gear limited blocks.
Above-mentioned push-chairs three are kept off in gearbox, are provided with limit spring, variable block between three divider and a divider
The lifting shift line for moving axially gear changing device in fixing axle is connected on device；It is in relaxed state when lifting shift line,
Limit spring squeezes a divider to wheel output cog side, and the rotation stop bolt of a divider is made to be inserted into the second exterior epicyclic gear
Rotation stop groove, so that the second exterior epicyclic gear, the first exterior epicyclic gear, inner planet gear can not rotate, planetary wheel carrier and wheel
Input gear rotates synchronously, and wheel input cog and wheel output cog transmission ratio are 1:1, i.e., one gear.
Push-chairs three above-mentioned are kept off in gearbox, and a divider is equipped with the pin for preventing gear changing device from deviating from, when mentioning
When drawing shift line tightening, gear changing device drives and moves outside a divider, and the rotation stop bolt of a divider is detached from the rotation stop of the second exterior epicyclic gear
Slot, the second gear limited block of gear changing device is moved to offset with second gear positioning protrusion, rotate two dividers can not；Wheel input cog turns
When dynamic, the second exterior epicyclic gear rolls on the outside of two dividers, forces planetary wheel carrier rotation, while the second exterior epicyclic gear is also successively
Inner planet gear and wheel output cog rotation are driven, it is defeated that wheel input cog and wheel output cog transmission ratio depend on wheel
Enter the number of teeth relationship of gear, two dividers and wheel output cog, i.e. second gear.
Push-chairs three above-mentioned are kept off in gearbox, described when lifting shift line continues tightening, three gear limits of gear changing device
Position block is moved to and offsets with three dividers, and second gear limited block is disengaged to offset position with second gear positioning protrusion, and planetary wheel carrier can not turn
It is dynamic；When wheel input cog rotates, the first exterior epicyclic gear, inner planet gear and wheel output cog rotation, vehicle are successively driven
The number of teeth relationship of wheel input gear and wheel output cog transmission ratio depending on wheel input cog and wheel output cog, i.e., three
Gear.
Push-chairs three above-mentioned are kept off in gearbox, and it is sliding that the boss surfaces of the planetary wheel carrier are provided with axial pin
Slot, a divider is equipped with pin corresponding with pin chute, so that a divider remains synchronous with planetary wheel carrier in movable type
Rotation, the rotation stop bolt of a divider can be directed at rotation stop groove.
Push-chairs three above-mentioned are kept off in gearbox, and the gear changing device includes the connection ring being set on a divider, connection
Ring is equipped with linking arm, and linking arm end two sides are respectively equipped with second gear limited block and three gear limited blocks, and at the top of three gear limited blocks
Equipped with the torque arm protruded into shifting device fixed frame.
Push-chairs three above-mentioned are kept off in gearbox, and the planetary wheel carrier is equipped with three perpendicular gear slots, three gears
Frame is plugged in three gear slots.
Compared with prior art, the present invention is by being arranged planetary wheel carrier and band in wheel output cog and wheel input cog
Two dividers of the gear teeth form the planetary transmission system of two sets of linkages, and limit planetary wheel carrier, two respectively using gear changing device
Divider, planetary gear rotation realize that the transmission ratio of input and output is adjusted, can at least complete 3 kinds of transmission ratios, conveniently realize
3 gears are adjusted.The present invention is simple gear engagement system in structure, and in variable block movement, failure rate is lower, and operates also ten
It is convenient to divide.
Gearbox of the invention can allow user according to numerous subjective factors, and (such as different sexes, all ages and classes, difference make
With duration etc.) and objective factor (such as different trips distance, different gradient, leeward windward) selection different stalls manipulate hand push
Wheelchair substantially increases the action independence and mobility of user；Under normal conditions, the path distance of user's trip is visitor
It sees to exist and not change for the consciousness of people.In the case where high speed shelves, user can also be by subtracting in certain stroke
Carry out the time less to reduce the risk for causing damage to user's upper limb, is of great immediate significance and practical value.
Detailed description of the invention
Fig. 1 is detonation configuration schematic diagram of the invention；
Fig. 2 is assembly structure diagram of the invention；
Fig. 3 is the rear view of Fig. 2；
Fig. 4 is a gear status diagram of the embodiment of the present invention；
Fig. 5 is the second gear status diagram of the embodiment of the present invention；
Fig. 6 is three gear status diagrams of implementation according to the present invention；
Fig. 7 is the structural schematic diagram of rotation stop bolt in embodiment.
Appended drawing reference: 1- shifting device fixed frame, 2- gear changing device, 2.1- second gear limited block, 2.2- tri- keep off limited block, and 2.3- connects
Connect ring, 2.4- linking arm, 2.5- torque arm, 3- limit spring, mono- divider of 4-, 4.1- rotation stop bolt, tri- divider of 5-, bis- divider of 6-,
The 6.1- gear teeth, 6.2- second gear positioning protrusion, 7.1- the first outer planet tooth, 7.2- the second outer planet tooth, 8- planetary wheel carrier, 8.1- axis
Set, 8.2- pin chute, 8.3- tri- keep off slot, 9- inner planet gear, 10- wheel output cog, 11- wheel input cog, 12-
Fixing axle.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.A kind of gear of push-chairs three gearbox, structure are as shown in Figures 1 to 3: including fixing axle 12, fixing axle 12
On be fixed with wheel output cog 10；Multiple inner planet gears 9 engaged are evenly distributed with outside wheel output cog 10, often
A 9 outside of inner planet gear is engaged with the first exterior epicyclic gear 7.1 respectively, and all exterior epicyclic gears 7 are engaged on same
In wheel input cog 11；The inner planet gear 9 and the first exterior epicyclic gear 7.1 are arranged on the same planetary wheel carrier 8；Institute
Planetary wheel carrier 8 is stated to be rotatablely connected by first bearing 13.1 and fixing axle 12；Far from wheel output gear on the planetary wheel carrier 8
The side of wheel 10 is equipped with axle sleeve 8.1, and axle sleeve 8.1 is rotatablely connected by second bearing 13.2 and fixing axle 12；On axle sleeve 8.1, from
Side close to wheel output cog 10 starts, and is successively arranged two dividers 6, a divider 4 and three dividers 5；One divider 4, which is equipped with, to be become
Lug-latch 2；It is toothed around 6.1 on the outside of two dividers 6, is engaged on the outside of the gear teeth 6.1 and the first exterior epicyclic gear 7.1 co-axially fixed
Two exterior epicyclic gears 7.2 are additionally provided with second gear positioning protrusion 6.2 on the outside of two dividers 6；Second exterior epicyclic gear 7.2 is equipped with
The rotation stop groove matched with the rotation stop bolt 4.1 on a divider 4；4.1 shape of rotation stop bolt can be the side to match with rotation stop groove
Shape or triangle.
Gear changing device 2 be equipped be respectively used to the second gear limited block 2.1 that offsets with second gear positioning protrusion 6.2 and three dividers 5 and
Three gear limited blocks 2.2.It is provided with limit spring 3 between three divider 5 and a divider 4, is connected on gear changing device 2 for making to become
The lifting shift line that lug-latch 2 is moved axially in fixing axle 12.8.1 surface of axle sleeve of the planetary wheel carrier 8 is provided with axial pin
Follow closely sliding slot 8.2, a divider 4 be equipped with pin corresponding with pin chute 8.2 so that a divider 4 movable type remain with
Planetary wheel carrier 8 rotates synchronously, and the rotation stop bolt 4.1 of a divider 4 can be directed at rotation stop groove.The gear changing device 2 includes being set in a gear
Connection ring 2.1 on frame 4, connection ring 2.3 are equipped with linking arm 2.4, and 2.4 end two sides of linking arm are respectively equipped with second gear limited block
2.1 and three keep off limited block 2.2, and are equipped with the torque arm 2.5 protruded into shifting device fixed frame 1 at the top of three gear limited blocks 2.2.The row
Star wheel frame 8 is equipped with three perpendicular gear slots 8.3, and three dividers 5 are plugged in three gear slots 8.3.It is set on one divider 4
There is the pin for preventing gear changing device 2 from deviating from.
Variable block principle of the invention:
1, a gear switching.
When lifting shift line is in relaxed state, limit spring 3 squeezes a divider 4 to 10 side of wheel output cog,
The rotation stop bolt 4.1 of a divider 4 is set to be inserted into the rotation stop groove of the second exterior epicyclic gear 7.2, thus the second exterior epicyclic gear 7.2, the
One exterior epicyclic gear 7.1, inner planet gear 9 can not rotate, and planetary wheel carrier 8 and wheel input cog 11 rotate synchronously, wheel
Input gear 11 and 10 transmission ratio of wheel output cog are 1:1.One retaining groove should be set on second gear limited block, in a gear state,
Second gear positioning protrusion 6.2 is corresponding in a retaining groove, to guarantee two divider energy normal rotations.
2, second gear switches.
When lifting shift line tightening, gear changing device 2 drives and moves outside a divider 4, and the rotation stop bolt 4.1 of a divider 4 is detached from the
The rotation stop groove of two exterior epicyclic gears 7.2, the second gear limited block 2.1 of gear changing device 2 is moved to offset with second gear positioning protrusion 6.2, makes
Two dividers 6 can not rotate；When wheel input cog 11 rotates, the second exterior epicyclic gear 7.2 is forced in the outer side roll of two divider 6
8 rotation of planetary wheel carrier, while the second exterior epicyclic gear 7.2 also successively drives inner planet gear 9 and wheel output cog 10 to rotate,
Wheel input cog 11 and 10 transmission ratio of wheel output cog depend on wheel input cog 11, two dividers 6 and wheel output gear
The number of teeth relationship of wheel 10.If the number of teeth of 6 wheel output cog 10 of wheel input cog 11 and two dividers is respectively Z3、Z2、Z1；
Wheel input cog, the second exterior epicyclic gear and two dividers are calculated first forms a set of planetary transmission system, this
Wheel input cog is gear ring in a system, and two dividers are sun gear, and in second gear state, two dividers, which are fixed, (is equivalent to the sun
Wheel is fixed), the gear ratio of gear ring and sun gear is α=Z3/Z2, according to characteristic equation: n1+αn2-(1+α)n3=0 (n in formula1、
n2And n3The respectively revolving speed of sun gear, gear ring and planet carrier, n1=0).Gear ring and planet carrier can be calculated according to formula
Speed ratio n2: n3=(1+ α)/α,
And in the planetary transmission system of wheel input cog, the second exterior epicyclic gear and wheel output cog 10 composition
In, wheel output cog 10 is that sun gear (sets its revolving speed as n4), the gear ratio of gear ring and sun gear is β=Z3/Z1, according to spy
Property equation: n4+βn2-(1+β)n3=0, it is n that last input-output ratio, which can be calculated,2: n4=(1+ α)/[(1+ β) α-(1+
α)β].Originally it is that can be set to 1.8 in embodiment, is used for middle speed gear.
3, three gear switching.
It is described that when lifting shift line continues tightening, three gear limited blocks 2.2 of gear changing device 2 are moved to offset with three dividers 5,
Second gear limited block 2.1 is disengaged to offset position with second gear positioning protrusion 6.2, and planetary wheel carrier 8 can not rotate；Wheel input cog 11
When rotation, the first exterior epicyclic gear 7.1, inner planet gear 9 and wheel output cog 10 is successively driven to rotate, wheel input cog
11 and 10 transmission ratio of wheel output cog depend on wheel input cog 11 and wheel output cog 10 number of teeth relationship.If wheel
Output gear and the wheel input cog number of teeth are respectively Z1 and Z3, then input and output transmission ratio is Z1/Z3, are originally that embodiment can incite somebody to action
Z1/Z3 is arranged to 1:3, reaches top gear.
Claims (7)
1. a kind of push-chairs three keep off gearbox, it is characterised in that: including fixing axle (12), fixing axle is fixed with wheel on (12)
Output gear (10)；Multiple inner planet gears (9) engaged, each expert are evenly distributed with outside wheel output cog (10)
It is engaged with respectively the first exterior epicyclic gear (7.1) on the outside of star gear (9), all exterior epicyclic gears (7) are engaged on same
In wheel input cog (11)；The inner planet gear (9) and the first exterior epicyclic gear (7.1) are arranged in the same planetary wheel carrier
(8) on；The planetary wheel carrier (8) is rotatablely connected by first bearing (13.1) and fixing axle (12)；On the planetary wheel carrier (8)
Axle sleeve (8.1) are equipped in the side far from wheel output cog (10), axle sleeve (8.1) passes through second bearing (13.2) and fixing axle
(12) it is rotatablely connected；On axle sleeve (8.1), since close to wheel output cog (10) side, be successively arranged two dividers (6),
One divider (4) and three dividers (5)；One divider (4) is equipped with gear changing device (2)；(6.1), the gear teeth are toothed around on the outside of two dividers (6)
(6.1) outside be engaged with co-axially fixed second exterior epicyclic gear (7.2) of the first exterior epicyclic gear (7.1), two dividers (6) are outside
Side is additionally provided with second gear positioning protrusion (6.2)；Second exterior epicyclic gear (7.2) is equipped with inserts with the rotation stop on a divider (4)
The rotation stop groove that pin (4.1) matches；Gear changing device (2) is equipped with and is respectively used to and second gear positioning protrusion (6.2) and three dividers (5) phase
The second gear limited block (2.1) supported and three gears limited block (2.2).
2. push-chairs three according to claim 1 keep off gearbox, it is characterised in that: three divider (5) and a divider
(4) it is provided with limit spring (3), is connected on gear changing device (2) for moving axially gear changing device (2) in fixing axle (12) between
Lifting shift gears line；When lifting shift line is in relaxed state, limit spring (3) is by a divider (4) to wheel output cog
(10) side squeezes, and the rotation stop bolt (4.1) of a divider (4) is made to be inserted into the rotation stop groove of the second exterior epicyclic gear (7.2), thus the
Two exterior epicyclic gears (7.2), the first exterior epicyclic gear (7.1), inner planet gear (9) can not rotate, planetary wheel carrier (8) and vehicle
It takes turns input gear (11) to rotate synchronously, wheel input cog (11) and wheel output cog (10) transmission ratio are 1:1.
3. push-chairs three according to claim 2 keep off gearbox, it is characterised in that: a divider (4) is equipped with anti-
The only pin of gear changing device (2) abjection, when lifting shift line tightening, gear changing device (2) drives a divider (4) to move outside, a divider (4)
Rotation stop bolt (4.1) be detached from the rotation stop groove of the second exterior epicyclic gear (7.2), the second gear limited block (2.1) of gear changing device (2) is mobile
It to offseting with second gear positioning protrusion (6.2), rotate two dividers (6) can not；When wheel input cog (11) rotates, the second layman
Star gear (7.2) forces planetary wheel carrier (8) rotation, while the second exterior epicyclic gear (7.2) in two dividers (6) outer side roll
Successively drive inner planet gear (9) and wheel output cog (10) rotation, wheel input cog (11) and wheel output cog
(10) transmission ratio depends on the number of teeth relationship of wheel input cog (11), two dividers (6) and wheel output cog (10).
4. push-chairs three according to claim 3 keep off gearbox, it is characterised in that: described when lifting shift line continues to receive
When tight, three gears limited block (2.2) of gear changing device (2) are moved to and offset with three dividers (5), second gear limited block (2.1) be disengaged to
Second gear positioning protrusion (6.2) offsets position, and planetary wheel carrier (8) can not rotate；When wheel input cog (11) rotates, successively drive
First exterior epicyclic gear (7.1), inner planet gear (9) and wheel output cog (10) rotation, wheel input cog (11) and vehicle
Take turns the number of teeth relationship that output gear (10) transmission ratio depends on wheel input cog (11) and wheel output cog (10).
5. push-chairs three according to claim 2 keep off gearbox, it is characterised in that: the axle sleeve of the planetary wheel carrier (8)
(8.1) surface is provided with axial pin chute (8.2), and a divider (4) is equipped with pin corresponding with pin chute (8.2),
It is rotated synchronously so that a divider (4) is remained in movable type with planetary wheel carrier (8), rotation stop bolt (4.1) energy of a divider (4)
It is directed at rotation stop groove.
6. push-chairs three according to claim 1 keep off gearbox, it is characterised in that: the gear changing device (2) includes being arranged
Connection ring (2.1) on a divider (4), connection ring (2.3) are equipped with linking arm (2.4), linking arm (2.4) end two sides point
Not She You second gear limited block (2.1) and three gears limited block (2.2), and be equipped with that protrude into shifting device solid at the top of three gears limited block (2.2)
Determine the torque arm (2.5) in frame (1).
7. push-chairs three according to claim 1 keep off gearbox, it is characterised in that: the planetary wheel carrier (8) is equipped with
Three perpendicular gears slot (8.3), three dividers (5) are plugged in three gear slots (8.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025049.0A CN108223714B (en) | 2018-01-11 | 2018-01-11 | A kind of gear of push-chairs three gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025049.0A CN108223714B (en) | 2018-01-11 | 2018-01-11 | A kind of gear of push-chairs three gearbox |
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| Publication Number | Publication Date |
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| CN108223714A CN108223714A (en) | 2018-06-29 |
| CN108223714B true CN108223714B (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810025049.0A Active CN108223714B (en) | 2018-01-11 | 2018-01-11 | A kind of gear of push-chairs three gearbox |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324060A (en) * | 1992-11-10 | 1994-06-28 | Charles R. Van Vooren | Wheelchair cycle apparatus |
| US6655470B1 (en) * | 2002-12-23 | 2003-12-02 | Power Network Industry Co., Ltd. | Speed changing mechanism for tools |
| CN201582385U (en) * | 2009-11-30 | 2010-09-15 | 陕西航天动力高科技股份有限公司 | Three-gear hydraulic gear-shifting dead axle gearbox |
| CN102815366A (en) * | 2012-09-17 | 2012-12-12 | 贵州兴国新动力科技有限公司重庆分公司 | Integral planet gear coaxial third-gear variable speed electric driving system |
| EP2875906A1 (en) * | 2013-11-22 | 2015-05-27 | Techtronic Power Tools Technology Limited | Multi-speed cycloidal transmission |
| CN106931100A (en) * | 2016-12-27 | 2017-07-07 | 广东技术师范学院 | The deceleration gear that a kind of turbine and worm is combined with dual planetary gear |
-
2018
- 2018-01-11 CN CN201810025049.0A patent/CN108223714B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324060A (en) * | 1992-11-10 | 1994-06-28 | Charles R. Van Vooren | Wheelchair cycle apparatus |
| US6655470B1 (en) * | 2002-12-23 | 2003-12-02 | Power Network Industry Co., Ltd. | Speed changing mechanism for tools |
| CN201582385U (en) * | 2009-11-30 | 2010-09-15 | 陕西航天动力高科技股份有限公司 | Three-gear hydraulic gear-shifting dead axle gearbox |
| CN102815366A (en) * | 2012-09-17 | 2012-12-12 | 贵州兴国新动力科技有限公司重庆分公司 | Integral planet gear coaxial third-gear variable speed electric driving system |
| EP2875906A1 (en) * | 2013-11-22 | 2015-05-27 | Techtronic Power Tools Technology Limited | Multi-speed cycloidal transmission |
| CN106931100A (en) * | 2016-12-27 | 2017-07-07 | 广东技术师范学院 | The deceleration gear that a kind of turbine and worm is combined with dual planetary gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108223714A (en) | 2018-06-29 |
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