CN108412983A - A kind of Double-outputting speed change box - Google Patents
A kind of Double-outputting speed change box Download PDFInfo
- Publication number
- CN108412983A CN108412983A CN201810457891.1A CN201810457891A CN108412983A CN 108412983 A CN108412983 A CN 108412983A CN 201810457891 A CN201810457891 A CN 201810457891A CN 108412983 A CN108412983 A CN 108412983A
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- Prior art keywords
- output
- gear
- seat
- speed change
- transmission gear
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- 230000008859 change Effects 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims description 77
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 238000009987 spinning Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 235000007926 Craterellus fallax Nutrition 0.000 description 2
- 240000007175 Datura inoxia Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
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
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a kind of Double-outputting speed change boxes, including babinet and speed change gear, speed change gear to include：Input mechanism can be connect with extraneous driving device；Seat is exported, extraneous driving device can drive output seat opposite case around a revolution rotary shaft rotation by input mechanism；Output, on output seat, the transverse central axis of output section deviates revolution rotary shaft for setting；Input mechanism is sequentially connected by a planetary gear mechanism and output, and extraneous driving device can drive transverse central axis of the output relative to output seat around output section to rotate by input mechanism and planetary gear mechanism；Linkage seat, extraneous driving device can drive linkage seat to synchronize constant velocity rotation with output seat around revolution rotary shaft by input mechanism, output, which has, is rotatably provided in linkage portion in linkage seat, and linkage portion deviates revolution rotary shaft one apart from and with one distance of output section time interval.Structure of the invention novelty is ingenious, stable, and failure rate is low.
Description
Technical field
The present invention relates to a kind of gearboxes.
Background technology
Gearbox be it is a kind of be widely used general drive apparatus, it is general for connecting to driving device and equipment
It connects, such as needs to use gearbox in the equipment such as extruder by motor and squeeze out bar and be attached, so that motor can drive
It is dynamic to rotate with squeezing out bar low-speed big.Its output end of existing gearbox is usually only capable of rotating around a rotary shaft, and many is set
It is standby to may require that its equipment can also do revolution motion, existing change around a rotary shaft rotation around another rotary shaft
Fast case cannot be satisfied this kind of demand.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of structure novel, can be achieved at the same time revolution and
The Double-outputting speed change box of rotation.
The present invention be solve its technical problem and the technical solution adopted is that：
A kind of Double-outputting speed change box, including babinet and the speed change gear that is arranged on babinet, the speed change gear include：
Input mechanism is arranged on babinet, and the input mechanism can be connect with extraneous driving device；
Seat is exported, is arranged on babinet, extraneous driving device can drive the output seat phase by the input mechanism
To babinet around a revolution rotary shaft rotation；
Output, on output seat, front end has the output section for being connect with extraneous equipment, described defeated for setting
The transverse central axis for going out portion deviates the revolution rotary shaft and enables the output section with output seat around revolution rotary shaft rotation；
The input mechanism is sequentially connected by a planetary gear mechanism and the output, and extraneous driving device can pass through
The input mechanism and planetary gear mechanism drives the opposite output seat of the output in the transverse direction of the output section
Central axis；
Linkage seat is arranged on babinet, and extraneous driving device can drive the linkage seat phase by the input mechanism
Constant velocity rotation is synchronized with output seat around the revolution rotary shaft to babinet, the output, which has, is rotatably provided in linkage
Linkage portion on seat, the linkage portion deviate the revolution rotary shaft one apart from and with the output section time interval one
Distance.
Preferably, it is aligned before and after the linkage portion and output section.
Preferably, it is described output seat opposite case around revolution rotary shaft rotation direction output seat opposite with output around defeated
The rotation direction for going out the transverse central axis in portion is opposite.
Preferably, the output section is the axis hole being arranged in output front end.
Preferably, the front of the output is in circular axle shape, and the front for exporting seat is provided with and is mutually fitted with the front of output
The front of the mounting hole matched, output is rotatably provided in the mounting hole.
Preferably, the input mechanism includes the driving member on rotatable setting babinet, and the planetary gear passes
Motivation structure includes the internal gear being arranged on the driving member and the external gear that is arranged on the output, the internal gear and
External gear is adapted and is meshed.
Preferably, the input mechanism includes the input component being rotatably provided on babinet, the first transmission shaft and
Two transmission shafts are provided with master gear on the input component, and the first transmission gear and third transmission are provided on the first transmission shaft
Gear is provided with the second transmission gear and the 4th transmission gear on second driving shaft, be provided on the output seat first from
Moving gear is provided with the second driven gear on driving member, wherein
The master gear and the first transmission gear or the second transmission gear are sequentially connected, while the first transmission gear and the
Two transmission gears drive the first transmission shaft and second driving shaft synchronous backward to rotate when being meshed and input component being enable to rotate；
The third transmission gear drives defeated when being meshed with the first driven gear and the first transmission shaft being enable to rotate
Go out seat rotation；4th transmission gear is meshed with the second driven gear and drives biography when second driving shaft being enable to rotate
Moving part rotates.
Preferably, it is additionally provided with the 5th transmission gear on first transmission shaft, it is driven to be provided with third in linkage seat
Gear, the third driven gear drive linkage seat when being meshed with the 5th transmission gear and the first transmission shaft being enable to rotate
Rotation.
Preferably, one the 6th transmission gear, the master gear and the 6th transmission are rotatably provided on the babinet
Gear is meshed, and the 6th transmission gear is meshed with the first transmission gear or the second transmission gear and master gear and first is made to be driven
Gear or the second transmission gear are sequentially connected.
Preferably, the input shaft for being connected with extraneous driving device is provided on the input component.
The beneficial effects of the invention are as follows：In the present invention, extraneous driving device can drive output seat to turn by input mechanism
It is dynamic, and revolution rotary shaft is deviateed in the output section of output, therefore output section can be driven to carry out revolution motion around revolution rotary shaft,
Extraneous driving device being capable of driving while output section carries out revolution motion by input mechanism and planetary gear mechanism
Transverse central axis of the output around output section rotates, that is, enables output section to carry out spinning motion, so that output section energy
It is enough carried out at the same time revolution and spinning motion, structure novel is ingenious so that this gearbox function more horn of plenty disclosure satisfy that extruder
Etc. equipment demand, it is easy to use, while structure is also relatively simple, contributes to the volume for reducing this gearbox, facilitate manufacture and
It uses；Linkage seat in the present invention can synchronize constant velocity rotation with output seat, and the linkage portion of output has been rotatably provided in connection
On dynamic seat, linkage portion deviates revolution rotary shaft one apart from and with one distance of output section time interval, so that linkage seat can
Driving linkage portion is synchronized with output section carries out revolution action, can effectively improve the smoothness of output, prevent output stress
Such as there is deflection, loosens at the failures in unevenness, effectively improves the acrotorque value that this gearbox can be born, can reduce the generation of failure
Rate.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the sectional view of the present invention.
Specific implementation mode
Referring to Figures 1 and 2, a kind of Double-outputting speed change box, including babinet 10 and the speed change gear being arranged on babinet 10, become
Speed variator includes：Input mechanism is arranged on babinet 10, and input mechanism can be connect with extraneous driving device；Seat 20 is exported, if
It sets on babinet 10, extraneous driving device can drive output 20 opposite case 10 of seat around a revolution rotary shaft by input mechanism
Rotation；Output 30, on output seat 20, front end has the output section 31 for being connect with extraneous equipment, defeated for setting
The transverse central axis for going out portion 31 deviates revolution rotary shaft and enables output section 31 with output seat 20 around revolution rotary shaft rotation；It is defeated
Enter mechanism to be sequentially connected by a planetary gear mechanism and output 30, extraneous driving device can by input mechanism and
Planetary gear mechanism drives transverse central axis of the output 30 relative to output seat 20 around output section 31 to rotate；Linkage seat 70,
It is arranged on babinet 10, extraneous driving device can drive 70 opposite case 10 of linkage seat around revolution rotary shaft by input mechanism
Constant velocity rotation is synchronized with output seat 20, there is output 30 linkage portion being rotatably provided in linkage seat 70, linkage portion to deviate
The rotary shaft one that revolves round the sun is apart from and with 31 time interval of output section, one distance.In the present invention, extraneous driving device passes through input mechanism
Output seat 20 can be driven to rotate, and revolution rotary shaft is deviateed in the output section 31 of output 30, therefore output section 31 can be driven
Revolution motion is carried out around revolution rotary shaft, extraneous driving device can exported by input mechanism and planetary gear mechanism
Transverse central axis of the driving output 30 around output section 31 rotates while portion 31 carries out revolution motion, that is, enables output section 31
Spinning motion is enough carried out, so that output section 31 can be carried out at the same time revolution and spinning motion, structure novel is ingenious so that this
Gearbox function more horn of plenty disclosure satisfy that the demand of the equipment such as extruder, easy to use, while structure is also relatively simple, has
The volume for helping reduce this gearbox, facilitates manufacture and use；Linkage seat 70 in the present invention can be synchronized with output seat 20
Speed rotation, the linkage portion of output 30 have been rotatably provided in linkage seat 70, and linkage portion deviates revolution rotary shaft one apart from simultaneously
With 31 time interval of output section, one distance, revolve round the sun so that linkage seat 70 can drive linkage portion to be synchronized with output section 31
Action, can effectively improve the smoothness of output 30, prevent 30 unbalance stress of output from the failures such as deflection occur, loosening, have
Effect improves the acrotorque value that this gearbox can be born, and can reduce the incidence of failure.
In the present embodiment, it is aligned before and after linkage portion and output section 31 so that output 30 can use linear structure,
Facilitate processing, assembly and use, certainly, in practical application, linkage portion can also be staggered with output section 31 and make the output 30 be in
The other shapes such as " Z " font.In the present embodiment, linkage portion is located at the rear end of output 30, is rotatably provided in by bearing 60
Simple in structure in a mounting groove in linkage seat 70, easy to process and assembly, in practical application, linkage portion may also be arranged on
The other positions such as the middle part of output 30, linkage portion can also be used other usual ways such as pivot joint and be spindle rotationally arranged in linkage seat
On 70, it is not limited to this.
In the present embodiment, rotation direction with output 30 opposite output of output 20 opposite case 10 of seat around revolution rotary shaft
Seat 20 is opposite around the rotation direction of the transverse central axis of output section 31 so that this gearbox makes especially suitable for equipment such as extruders
With.
Output section 31 is the axis hole being arranged in 30 front end of output, and the convenient main shaft with extraneous equipment is attached,
Certainly, in practical application, output shaft, ring flange etc. can also be used in output section 31, and other commonly use connection structures, it is not limited to this.
In the present embodiment, the front of output 30 is in circular axle shape, the front of output seat 20 be provided with before output 30
The compatible mounting hole 21 in portion, the front of output 30 is rotatably provided in mounting hole 21, simple in structure, easy to process and dress
Match, the transverse central axis of the mounting hole 21 deviates revolution rotary shaft.
Input mechanism includes the driving member 40 on rotatable setting babinet 10, and planetary gear mechanism includes that setting exists
Internal gear 41 on driving member 40 and the external gear 32 being arranged on output 30, internal gear 41 and external gear 32 are adapted simultaneously phase
Engagement, so that driving member 40 can drive output 30 to rotate when rotating by the cooperation of internal gear 41 and external gear 32,
It is simple in structure, easy to process and assembly.
In the present invention, input mechanism includes the input component 51 being rotatably provided on babinet 10,52 and of the first transmission shaft
Second driving shaft is provided with master gear 511 on input component 51, the first transmission gear 521 and is provided on the first transmission shaft 52
Three transmission gears 522 are provided with the second transmission gear and the 4th transmission gear on second driving shaft, export and are provided with the on seat 20
One driven gear 22 is provided with the second driven gear 42 on driving member 40, wherein master gear 511 and the first transmission gear 521 or
Second transmission gear is sequentially connected, while the first transmission gear 521 and the second transmission gear are meshed and input component 51 made to rotate
When the first transmission shaft 52 and second driving shaft synchronous backward can be driven to rotate；Third transmission gear 522 and the first driven gear
22 drive output seat 20 to rotate when being meshed and the first transmission shaft 52 being enable to rotate；4th transmission gear and the second driven gear
42 drive driving member 40 to rotate when being meshed and second driving shaft being enable to rotate.Input mechanism uses gear-driven knot
Structure, structure is more compact, contributes to the volume for reducing this gearbox, facilitates manufacture and use, certainly, in practical application, input
Chain drive, V belt translation, worm gear mechanism etc. can also be used in mechanism, and other commonly use transmission mechanisms, it is not limited to this.
It is additionally provided with the 5th transmission gear on first transmission shaft 52, third driven gear 71 is provided in linkage seat 70, the
Three driven gears 71 drive linkage seat 70 to rotate when being meshed with the 5th transmission gear and the first transmission shaft 52 being enable to rotate, profit
It drives linkage seat 70 to rotate with the first transmission shaft 52, help to ensure that linkage seat 70 and exports the synchronous rotation of seat 20, it is convenient
It installs and uses, in the present embodiment, third transmission gear 522 is identical as the 5th transmission gear, the first driven gear 22 and third
Driven gear 71 is identical, is achieved in linkage seat 70 and exports the synchronous constant velocity rotation of seat 20.
One the 6th transmission gear, master gear 511 and the 6th transmission gear are rotatably provided in the present embodiment, on babinet 10
It is meshed, the 6th transmission gear is meshed with the first transmission gear 521 or the second transmission gear and master gear 511 and first is made to pass
Moving gear 521 or the second transmission gear are sequentially connected so that it is convenient to adjust position of the input component 51 on babinet 10, facilitate this change
The installation and use of fast case.
In the present embodiment, the input shaft 512 for being connected with extraneous driving device is provided on input component 51, convenient for it is outer
The driving devices such as the motor on boundary connect, easy to use.
The front that seat 20 is exported in the present embodiment is in circular axle shape, and revolution rotary shaft is to export the transverse center of 20 front of seat
Axis, certainly, in practical application, other common shapes and structure can also be used in output seat 20, it is not limited to this.This gearbox
If dry bearing 60 is additionally provided on, the setting of these bearings 60 is in input component 51, output seat 20, output 30, driving member 40, first
Transmission shaft 51, second driving shaft 52 etc. be between rotatable parts and babinet 10, is subject to when the rotation of these rotatable parts for reducing
Frictional resistance improves the transmission efficiency of this gearbox.
The foregoing is merely the preferred embodiments of the present invention, as long as realizing the skill of the object of the invention with essentially identical means
Art scheme belongs within protection scope of the present invention.
Claims (10)
1. a kind of Double-outputting speed change box, which is characterized in that including babinet (10) and the speed change gear being arranged on babinet (10), institute
The speed change gear stated includes：
Input mechanism is arranged on babinet (10), and the input mechanism can be connect with extraneous driving device；
Seat (20) is exported, is arranged on babinet (10), extraneous driving device can drive the output by the input mechanism
Seat (20) opposite case (10) is around a revolution rotary shaft rotation；
Output (30), on output seat (20), front end has the output section for being connect with extraneous equipment for setting
(31), the transverse central axis of the output section (31) deviates the revolution rotary shaft and makes the output section (31) can be with output
Seat (20) is around revolution rotary shaft rotation；The input mechanism is passed by a planetary gear mechanism and the output (30)
Dynamic connection, extraneous driving device can drive the output (30) by the input mechanism and planetary gear mechanism
Transverse central axis relative to output seat (20) around the output section (31) rotates；
Linkage seat (70) is arranged on babinet (10), and extraneous driving device can drive the linkage by the input mechanism
Seat (70) opposite case (10) synchronizes constant velocity rotation, the output (30) around the revolution rotary shaft with output seat (20)
With the linkage portion being rotatably provided in linkage seat (70), the linkage portion deviates the revolution rotary shaft one apart from simultaneously
With one distance of output section (31) time interval.
2. a kind of Double-outputting speed change box according to claim 1, which is characterized in that the linkage portion and output section (31)
Front and back alignment.
3. a kind of Double-outputting speed change box according to claim 1, which is characterized in that output seat (20) opposite case
(10) around the rotation direction of revolution rotary shaft and output (30) transverse central axis of the output seat (20) around output section (31) relatively
Rotation direction it is opposite.
4. a kind of Double-outputting speed change box according to claim 1, which is characterized in that the output section (31) is that setting exists
The axis hole of output (30) front end.
5. a kind of Double-outputting speed change box according to claim 1, which is characterized in that the front of the output (30) is in circle
The front of shaft-like, output seat (20) is provided with mounting hole (21) compatible with the front of output (30), output (30)
Front is rotatably provided in the mounting hole (21).
6. a kind of Double-outputting speed change box according to claim 1, which is characterized in that the input mechanism includes rotatable
A driving member (40) on babinet (10) is set, and the planetary gear mechanism includes being arranged on the driving member (40)
Internal gear (41) and external gear (32) on the output (30), the internal gear (41) and external gear (32) phase are set
It is adapted to and is meshed.
7. a kind of Double-outputting speed change box according to claim 6, which is characterized in that the input mechanism includes that can turn
Dynamic input component (51), the first transmission shaft (52) and the second driving shaft being arranged on babinet (10), on the input component (51)
It is provided with master gear (511), the first transmission gear (521) and third transmission gear (522) are provided on the first transmission shaft (52),
The second transmission gear and the 4th transmission gear are provided on second driving shaft, it is driven to be provided with first on the output seat (20)
Gear (22) is provided with the second driven gear (42) on driving member (40), wherein
The master gear (511) is sequentially connected with the first transmission gear (521) or the second transmission gear, while the first driving cog
Wheel (521) and the second transmission gear drive the first transmission shaft (52) and second to pass when being meshed and input component (51) being enable to rotate
Moving axis synchronous backward rotates；
When the third transmission gear (522) is meshed with the first driven gear (22) and the first transmission shaft (52) is enable to rotate
It is enough that output seat (20) is driven to rotate；4th transmission gear is meshed with the second driven gear (42) and makes second driving shaft
Driving member (40) can be driven to rotate when rotation.
8. a kind of Double-outputting speed change box according to claim 7, which is characterized in that on first transmission shaft (52) also
It is provided with the 5th transmission gear, third driven gear (71), the third driven gear (71) are provided in linkage seat (70)
Linkage seat (70) is driven to rotate when being meshed with the 5th transmission gear and the first transmission shaft (52) being enable to rotate.
9. a kind of Double-outputting speed change box according to claim 7, which is characterized in that rotatably set on the babinet (10)
It is equipped with one the 6th transmission gear, the master gear (511) is meshed with the 6th transmission gear, and the 6th transmission gear and first passes
Moving gear (521) or the second transmission gear are meshed and make master gear (511) and the first transmission gear (521) or the second driving cog
Wheel is sequentially connected.
10. a kind of Double-outputting speed change box according to claim 7, which is characterized in that be arranged on the input component (51)
It is useful for the input shaft (512) being connected with extraneous driving device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810239470 | 2018-03-22 | ||
| CN2018102394701 | 2018-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108412983A true CN108412983A (en) | 2018-08-17 |
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ID=63139185
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820718695.0U Active CN208778605U (en) | 2018-03-22 | 2018-05-14 | A kind of Double-outputting speed change box |
| CN201810457891.1A Pending CN108412983A (en) | 2018-03-22 | 2018-05-14 | A kind of Double-outputting speed change box |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820718695.0U Active CN208778605U (en) | 2018-03-22 | 2018-05-14 | A kind of Double-outputting speed change box |
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| Country | Link |
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| CN (2) | CN208778605U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208778605U (en) * | 2018-03-22 | 2019-04-23 | 广东星联科技有限公司 | A kind of Double-outputting speed change box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975449Y (en) * | 2006-11-22 | 2007-11-14 | 河南理工大学 | Controllable Gear changes |
| CN102606684A (en) * | 2012-03-30 | 2012-07-25 | 张鑫珩 | Multi-loop concentric circumferential drive reducing mechanism |
| CN203395130U (en) * | 2013-07-11 | 2014-01-15 | 肖福禄 | Gearbox capable of inputting with dual power |
| CN105065582A (en) * | 2015-05-20 | 2015-11-18 | 华南理工大学 | Coaxial-output rotation and revolution transmission method and device |
| CN208778605U (en) * | 2018-03-22 | 2019-04-23 | 广东星联科技有限公司 | A kind of Double-outputting speed change box |
-
2018
- 2018-05-14 CN CN201820718695.0U patent/CN208778605U/en active Active
- 2018-05-14 CN CN201810457891.1A patent/CN108412983A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200975449Y (en) * | 2006-11-22 | 2007-11-14 | 河南理工大学 | Controllable Gear changes |
| CN102606684A (en) * | 2012-03-30 | 2012-07-25 | 张鑫珩 | Multi-loop concentric circumferential drive reducing mechanism |
| CN203395130U (en) * | 2013-07-11 | 2014-01-15 | 肖福禄 | Gearbox capable of inputting with dual power |
| CN105065582A (en) * | 2015-05-20 | 2015-11-18 | 华南理工大学 | Coaxial-output rotation and revolution transmission method and device |
| CN208778605U (en) * | 2018-03-22 | 2019-04-23 | 广东星联科技有限公司 | A kind of Double-outputting speed change box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN208778605U (en) | 2019-04-23 |
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