CN207999486U - Transmission force switching device combined with rotating shaft - Google Patents
Transmission force switching device combined with rotating shaft Download PDFInfo
- Publication number
- CN207999486U CN207999486U CN201820329606.3U CN201820329606U CN207999486U CN 207999486 U CN207999486 U CN 207999486U CN 201820329606 U CN201820329606 U CN 201820329606U CN 207999486 U CN207999486 U CN 207999486U
- Authority
- CN
- China
- Prior art keywords
- rotation axis
- driving
- driving mechanism
- switching device
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 230000009467 reduction Effects 0.000 claims description 2
- 230000008450 motivation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000015246 common arrowhead Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Toys (AREA)
- Structure Of Transmissions (AREA)
Abstract
The utility model provides a transmission force switching device combined with a rotating shaft, which provides the functions of power transmission, switching, structure simplification and the like; the transmission force switching device comprises a rotating shaft connected with a power source, and a first driving mechanism and a second driving mechanism are arranged on the rotating shaft. In essence, a first one-way bearing is arranged between the rotating shaft and the first driving mechanism, and a second one-way bearing is arranged between the rotating shaft and the second driving mechanism; and selectively transmitting the first driving mechanism or the second driving mechanism according to the rotation direction of the rotating shaft so as to transmit power to an output shaft for outputting, so that the vehicle generates a forward or reverse movement mode.
Description
Technical field
The utility model is related to a kind of driving force switching devices;Particularly relate to it is a kind of apply in Vehicular system, structure is more smart
The switchover apparatus of letter;The steering for coordinating rotation axis, directly switches power, controls the transmission output mode of forward or backward
Technology.
Background technology
Apply in terms of vehicle, such as speed change gear, gear set passing power, differential mechanism etc., make vehicle generate advance, after
Move back or idling dally the effects that transmission device, be an existing skill.For example, " automobile passes TaiWan, China the 87217364th
Dynamic device " (that is, US 6146306 " AUTOMOBILE TRANSMISSION DEVICE ") Patent Case, provides a typical case
Embodiment.
Existing vehicle speed variation transmission system includes manual, automatic and the kenels such as continous way variable ratio drive system;They
Make the power of engine shaft or motor shaft by a speed changing control mechanism, be assemblied on an inputting shaft enter powershift gear group and
The devices such as (bevel type gear) box of tricks, the output gear set that are arranged on a force-output shaft, make power be transmitted on the force-output shaft,
To make vehicle obtain the movement of different speed change ratios.
Substantially, which includes a plurality of being respectively assembled at the class spring body into the inside and outside portion of powershift gear group
With control pushing cylinder;It is rotated via manually or automatically one worm gear disk of speed Control motor braking, the different ball of selective driving
(or push rod) pushes the control pushing cylinder, forms engagement or not engagement state to make such spring body and this enter powershift gear group, allows
The powershift gear component supplementary biography that enters of the different numbers of teeth moves the output gear set and box of tricks, and the force-output shaft is made to generate different rotating speeds driving
Vehicle.
Old law also has revealed that a kind of application operating brake movement, and selectivity is driven different driving mechanism, to make vehicle produce
Before death into or setback pattern technology.For example, " the driving force switching of combination rotation axis of TaiWan, China the 100114338th
Device " Patent Case (or TaiWan, China I 544166), provides a feasible embodiment.The embodiment includes that a connection is dynamic
The rotation axis in power source is provided with one first driving mechanism, one second driving mechanism and the system that is rotated with rotation axis in rotation axis
Dynamic device.Brake can move in the rotation axis, selective braking first driving mechanism or the second driving mechanism, to incite somebody to action
Power is transmitted to force-output shaft output, and controls the motor pattern of the forward or backward of vehicle.
For representative, these references are shown in terms of Vehicular system, in relation to power-supply change-over and transmission mechanism
Design skill;If the cooperation situation of the overline design consideration power changing apparatus and transmission mechanism, makes its structure design
Meet a condition simplified, and its construction is made to be different from those existing, or keeps its operation and power transmission more simple and straight
The effects that connecing by its changeable power transmission kenel, and is different from old law.For example, removing the structure of old law application brake
More easy effect is more simplified and operated to kenel and operation mode to reach structure;And these projects are in above-mentioned reference
In do not taught or specific disclosed.
Utility model content
The purpose of this utility model is that:A kind of driving force switching device being combined in rotation axis is provided, existing skill is solved
Above-mentioned technical problem present in art.
To achieve the above object, the technical solution adopted in the utility model is:
A kind of driving force switching device being combined in rotation axis, it is characterized in that including:
The rotation axis for connecting power source enables rotation axis to be rotated towards the first rotation direction and the second rotation direction;
One first driving mechanism and one second driving mechanism are provided in rotation axis;There is first driving mechanism setting to turn
Driving wheel on moving axis and the follower being arranged on an inputting shaft;Second driving mechanism has the active of setting on the rotating shaft
Take turns and be arranged on a force-output shaft follower that can be mutually driven with driving wheel;
One first unilateral bearing, rotation axis and the second driving are provided between rotation axis and the driving wheel of the first driving mechanism
One second unilateral bearing is provided between the driving wheel of mechanism, according to axle steer is rotated, to be driven first driving machine respectively
Structure, the second driving mechanism, and transfer power to force-output shaft output.
The driving force switching device for being combined in rotation axis, wherein:First driving mechanism is a reducing gear turbine
Structure;Also, the driving wheel and follower of the first driving mechanism are intermeshed.
The driving force switching device for being combined in rotation axis, wherein:The driving wheel cooperation the of first driving mechanism
One unilateral bearing makes the driving wheel of the first driving mechanism rotate and rotate synchronously towards the first rotation direction with rotation axis, is rotating
Axis rotates towards the second rotation direction and forms lost motion;
The driving wheel of second driving mechanism coordinates the second unilateral bearing, makes the driving wheel of the second driving mechanism with rotation axis court
Second rotation direction is rotated and is rotated synchronously, and is rotated towards the first rotation direction in rotation axis and is formed lost motion.
The driving force switching device for being combined in rotation axis, wherein:The follower utility key of first driving mechanism
It is bonded on inputting shaft;
Inputting shaft is provided with one and enters powershift gear group and a speed Control portion;
An output gear set, box of tricks and output beam barrel are installed on force-output shaft;The both ends of force-output shaft are used for being pivotally connected vehicle
Wheel;And output gear set is rotatably assemblied on the output beam barrel of the box of tricks freely;
It is equipped with a transmission belt between the driving wheel and follower of second driving mechanism.
The driving force switching device for being combined in rotation axis, wherein:The follower utility key of first driving mechanism
It is bonded on inputting shaft;
Inputting shaft is provided with one and enters powershift gear group and a speed Control portion;
An output gear set, box of tricks and output beam barrel are installed on force-output shaft;The both ends of force-output shaft are used for being pivotally connected vehicle
Wheel;And output gear set is rotatably assemblied on the output beam barrel of the box of tricks freely;
It is equipped with a transmission belt between the driving wheel and follower of second driving mechanism.
The driving force switching device for being combined in rotation axis, wherein:The both sides of first unilateral bearing, second are unidirectionally
The both sides of bearing are respectively arranged with ball bearing.
Compared with prior art, it is had the advantage that using the utility model of above-mentioned technical proposal:According to this reality
With the novel driving force switching device for being combined in rotation axis, which allows rotation axis towards one first rotation direction
When rotation, first driving means are imparted power to, when the second unilateral bearing allows rotation axis to be rotated towards one second rotation direction,
Impart power to the second driving device;The motor pattern for advancing or falling back is generated to control vehicle respectively.
Description of the drawings
Fig. 1 is the embodiments of the present invention dimensional structure diagram.
Fig. 2 is the structural decomposition diagram of the utility model.
Fig. 3 is the utility model and enters the implementation of powershift gear group, speed Control portion, output gear set and box of tricks combination
It illustrates and is intended to;The situation that rotation axis is driven the first driving mechanism through the first unilateral bearing is also illustrated in figure.
Fig. 4 is an operation embodiment schematic diagram of the utility model;Show rotation axis through the second unilateral bearing transmission the
The situation of two driving mechanisms.
Reference sign:The first driving mechanisms of 10-;11- driving wheels;12- followers;The second driving mechanisms of 20-;21-
Driving wheel;22- followers;23- transmission belts;The first unilateral bearings of 30-;35- bearings;The second unilateral bearings of 40-;45- keys;50-
Enter powershift gear group;55- speed Controls portion;60- output gear sets;65- boxs of tricks;66- output beam barrels;70- power sources;80-
Rotation axis;85- inputting shafts;90- force-output shafts.
Specific implementation mode
It please refers to Fig.1, Fig. 2 and Fig. 3, the driving force switching device for being combined in rotation axis of the utility model, including one connects
Connect the rotation axis of power source;Generally indicated respectively with Ref. No. 70,80.The power source 70 (number is indicated in Fig. 3) may be selected
The kenel of one motor, internal combustion engine or engine makes rotation axis 80 generate counterclockwise or clockwise rotational power.In order to be conducive to
Embodiment illustrates that the generation of rotation axis 80, which is rotated counterclockwise direction, is defined as the first rotation direction, and rotation axis 80 generates clockwise
Rotation direction is defined as the second rotation direction.
It is shown in figure and is provided with one first driving mechanism 10, one second driving mechanism 20 in the rotation axis 80.This first
Driving mechanism 10 selects a reduction gear, including (deceleration) driving wheel 11 and (deceleration) follower 12;Driving wheel 11
The kenel for being mutually driven or engaging is formed with follower 12.
Specifically, which makes driving wheel 11 with unification 30 device of the first unilateral bearing in rotation axis 80
It rotates and rotates synchronously towards the first rotation direction (or rotating counterclockwise direction) in response to rotation axis 80;And rotation axis 80 is towards
Two rotation directions (or rotating clockwise direction) rotate and form lost motion.
In the embodiment adopted, 12 utility key 45 of follower of the first driving mechanism 10 is bonded on an inputting shaft 85;
Therefore, follower 12 and inputting shaft 85 form the kenel rotated synchronously.In a specific embodiment, which is arranged
There is one to enter powershift gear group 50 and a speed Control portion 55.According to being shown in figure, this enters powershift gear group 50 and selects a fourth gear transmission
System.
It includes a driving wheel 21 and a follower 22 that Fig. 1, Fig. 2 and Fig. 3, which also illustrate the second driving mechanism 20,;Driving wheel
21 and follower 22 form the kenel being mutually driven.The driving wheel 21 is with unification 40 device of the second unilateral bearing in rotation axis 80
On, so that driving wheel 21 is rotated and is rotated synchronously towards the second rotation direction (or rotating clockwise direction) in response to rotation axis 80;And
Rotation axis 80 rotates towards the first rotation direction (or rotating counterclockwise direction) and forms lost motion.
In a feasible embodiment, the position of the first unilateral bearing 30, the second unilateral bearing 40, rotation axis 80 are corresponded to
At least one or a plurality of bearings 35 are provided with, for the first unilateral bearing 30, the second unilateral bearing 40 is auxiliarily fixed.It is shown in figure
The both sides on the both sides, the second unilateral bearing 40 that have shown the first unilateral bearing 30 are respectively arranged with (ball) bearing 35.
The follower 22 that the second driving mechanism 20 is also shown in figure combines on a force-output shaft 90.Enter power tooth relative to this
Wheel group 50, device has an output gear set 60 on force-output shaft 90;This output gear set 60 is also one fourth gear power train of selection
System.In the embodiment adopted, force-output shaft 90 is installed with box of tricks 65 and output beam barrel 66.The both ends of force-output shaft 90 are used for pivot
Pick up the discribed situation of imaginary line part in wheel W, such as figure.
And rotatable being assemblied on the output beam barrel 66 of the box of tricks 65 freely of output gear set 60.Therefore, when
When the rotational power of inputting shaft 85 is driven the output gear set 60 rotation through entering powershift gear group 50, output gear set 60 can be driven this
Box of tricks 65 and output beam barrel 66 rotate, and force-output shaft 90 is made to generate the driving wheel W rotations of different rotating speeds.
It is above-mentioned enter the portions such as powershift gear group 50, speed Control portion 55, output gear set 60, box of tricks 65, output beam barrel 66
The respective outer side edges and transmission situation divided, belong to the prior art, therefore do not give detailed description.
It must be illustrated, the above-mentioned driving wheel 21 for referring to second driving mechanism 20 and follower 22 form mutual biography
Dynamic kenel.In a feasible embodiment, be equipped between the driving wheel 21 and follower 22 transmission belt 23 (for example,
Belt, chain or its analog), connect the driving wheel 21 and follower 22;That is, the dynamical system of driving wheel 21 is via this
Transmission belt 23 drives follower 22 to rotate.
Referring to Fig. 3, assume power source 70 drive rotation axis 80 towards the first rotation direction rotation (by figure the left side see regard,
Counter clockwise direction as represented by arrow head part) when, the power coordinates the first unilateral bearing 30 to make the first driving mechanism 10
Driving wheel 11 is rotated synchronously with rotation axis 80;And the directly drive follower 12 of driving wheel 11 is driven this and enters toward the clockwise direction
Power axis 85 rotates.Therefore, inputting shaft 85 will make to rotate synchronously into powershift gear group 50, and power is transmitted to box of tricks 65, makes output
Axis 90 (rotating in an anti-clockwise direction) band motor car wheel W rotations, driving vehicle generate forward travel.
Apprehensible to be, the second driving mechanism 20 forms lost motion due to the second unilateral bearing 40, makes the second driving machine
The driving wheel 21 of structure 20 will not passing power to follower 22.
Please refer to Fig.4, it is assumed that power source 70 drive rotation axis 80 towards the second rotation direction rotation (by figure the left side see regard,
Clockwise direction as represented by arrow head part) when, the power coordinates the second unilateral bearing 40 to make the second driving mechanism 20
Driving wheel 21 is rotated synchronously with rotation axis 80;And driving wheel 21 (through transmission belt 23) drives follower 22 toward the clockwise direction
(output beam barrel 66 and box of tricks 65) force-output shaft 90 (clockwise direction) rotation is somebody's turn to do in transmission, and is rotated with motor car wheel W, and vehicle is driven
Generate setback.
Above-mentioned Fig. 3, Fig. 4 show, this driving force switching device be arranged through rotation axis 80 or coordinate the first unilateral bearing 30,
Second unilateral bearing 40, you can have the function that controlling vehicle advances, retreats.For old law, in operation and cooperation side
Face is more simplified and simply.
For representative, this is combined in the driving force switching device of rotation axis, under conditions of one structure of offer is simplified,
It include following design consideration:
For existing skill, the respective outer side edges kenel of this driving force switching device, which is passed through, to be specifically designed and arranges,
And its construction is made to be different from those existing;For example, it is single via rotation axis 80 and the first unilateral bearing 30, second so that its power is transmitted
To the respective outer side edges kenel of bearing 40, selective transmission first driving mechanism 10 or the second driving mechanism 20.
The respective outer side edges kenel of driving force switching device makes its operation and power transmission have simpler and direct etc.
Effect, and its power transmission kenel is changed, the power for being also different from old law transmits and motor pattern.
It is described above to be merely exemplary for the utility model, and not restrictive, those of ordinary skill in the art
Understand, in the case where not departing from spirit and scope defined by claim, can many modifications may be made, variation or it is equivalent, but
It falls within the scope of protection of the utility model.
Claims (9)
1. a kind of driving force switching device being combined in rotation axis, it is characterized in that including:
The rotation axis for connecting power source enables rotation axis to be rotated towards the first rotation direction and the second rotation direction;
One first driving mechanism and one second driving mechanism are provided in rotation axis;First driving mechanism, which has, to be arranged in rotation axis
On driving wheel and the follower that is arranged on an inputting shaft;Second driving mechanism have setting driving wheel on the rotating shaft and
The follower that can be mutually driven with driving wheel is set on a force-output shaft;
One first unilateral bearing, rotation axis and the second driving mechanism are provided between rotation axis and the driving wheel of the first driving mechanism
Driving wheel between be provided with one second unilateral bearing, according to axle steer is rotated, to be driven first driving mechanism, the respectively
Two driving mechanisms, and transfer power to force-output shaft output.
2. the driving force switching device according to claim 1 for being combined in rotation axis, it is characterised in that:First driving machine
Structure is a reduction gear;Also, the driving wheel and follower of the first driving mechanism are intermeshed.
3. the driving force switching device according to claim 1 or 2 for being combined in rotation axis, it is characterised in that:First drive
The driving wheel of motivation structure coordinates the first unilateral bearing, and the driving wheel of the first driving mechanism is made to turn towards the first rotation direction with rotation axis
It moves and rotates synchronously, rotated towards the second rotation direction in rotation axis and form lost motion;
The driving wheel of second driving mechanism coordinates the second unilateral bearing, makes the driving wheel of the second driving mechanism with rotation axis towards second
Rotation direction is rotated and is rotated synchronously, and is rotated towards the first rotation direction in rotation axis and is formed lost motion.
4. the driving force switching device according to claim 1 or 2 for being combined in rotation axis, it is characterised in that:First drive
The follower utility key of motivation structure is bonded on inputting shaft;
Inputting shaft is provided with one and enters powershift gear group and a speed Control portion;
An output gear set, box of tricks and output beam barrel are installed on force-output shaft;The both ends of force-output shaft are used for being pivotally connected wheel;With
And output gear set is rotatably assemblied on the output beam barrel of the box of tricks freely;
It is equipped with a transmission belt between the driving wheel and follower of second driving mechanism.
5. the driving force switching device according to claim 3 for being combined in rotation axis, it is characterised in that:First driving machine
The follower utility key of structure is bonded on inputting shaft;
Inputting shaft is provided with one and enters powershift gear group and a speed Control portion;
An output gear set, box of tricks and output beam barrel are installed on force-output shaft;The both ends of force-output shaft are used for being pivotally connected wheel;With
And output gear set is rotatably assemblied on the output beam barrel of the box of tricks freely;
It is equipped with a transmission belt between the driving wheel and follower of second driving mechanism.
6. the driving force switching device according to claim 1 or 2 for being combined in rotation axis, it is characterised in that:First list
It is respectively arranged with ball bearing to the both sides on the both sides of bearing, the second unilateral bearing.
7. the driving force switching device according to claim 3 for being combined in rotation axis, it is characterised in that:First one-way shaft
The both sides on the both sides, the second unilateral bearing held are respectively arranged with ball bearing.
8. the driving force switching device according to claim 4 for being combined in rotation axis, it is characterised in that:First one-way shaft
The both sides on the both sides, the second unilateral bearing held are respectively arranged with ball bearing.
9. the driving force switching device according to claim 5 for being combined in rotation axis, it is characterised in that:First one-way shaft
The both sides on the both sides, the second unilateral bearing held are respectively arranged with ball bearing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106204334U TWM548637U (en) | 2017-03-28 | 2017-03-28 | Improved transmission force switching device assembled in rotation shaft |
| TW106204334 | 2017-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207999486U true CN207999486U (en) | 2018-10-23 |
Family
ID=60764944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820329606.3U Active CN207999486U (en) | 2017-03-28 | 2018-03-09 | Transmission force switching device combined with rotating shaft |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN207999486U (en) |
| TW (1) | TWM548637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112690068A (en) * | 2020-12-23 | 2021-04-23 | 农业农村部南京农业机械化研究所 | Automatic calibration control system and control method for seeding quantity and fertilizing quantity of precision seeder |
| CN112698597A (en) * | 2020-12-23 | 2021-04-23 | 农业农村部南京农业机械化研究所 | Automatic control system and control method for seeder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI790038B (en) * | 2021-12-10 | 2023-01-11 | 直接傳動科技股份有限公司 | Output transmission device for vehicles |
-
2017
- 2017-03-28 TW TW106204334U patent/TWM548637U/en unknown
-
2018
- 2018-03-09 CN CN201820329606.3U patent/CN207999486U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112690068A (en) * | 2020-12-23 | 2021-04-23 | 农业农村部南京农业机械化研究所 | Automatic calibration control system and control method for seeding quantity and fertilizing quantity of precision seeder |
| CN112698597A (en) * | 2020-12-23 | 2021-04-23 | 农业农村部南京农业机械化研究所 | Automatic control system and control method for seeder |
| CN112690068B (en) * | 2020-12-23 | 2022-03-11 | 农业农村部南京农业机械化研究所 | Automatic calibration control system and control method for seeding quantity and fertilizing quantity of precision seeder |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM548637U (en) | 2017-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207999486U (en) | Transmission force switching device combined with rotating shaft | |
| CN203585255U (en) | Transaxle | |
| JPH07187001A (en) | Planetary steering system for skid steering vehicle | |
| JP6356833B2 (en) | Double-sided toy car | |
| CN203780640U (en) | Walking assembly of caterpillar vehicle | |
| CN103507857A (en) | Double-motor coupling type mechanical and electrical composite transmission device of a crawler | |
| CN102758895B (en) | Transmission force switching device combined with rotating shaft | |
| CN104487272A (en) | Motorized hub comprising a change in ratio and coupling and uncoupling means | |
| CN206475746U (en) | It is a kind of to be used for the differential drive device of industrial traveling vehicle | |
| WO2005072844A1 (en) | Power transmission mechanism of model vehicle | |
| CN207145564U (en) | Motor vehicle transmission unit | |
| CN205009993U (en) | Optional transfer case of drive shaft, actuating system and car | |
| CN105059389B (en) | A kind of endless-track vehicle planetary gear differential transfer | |
| CN100467908C (en) | Power delivery system of hybrid electric vehicle | |
| CN206231439U (en) | A kind of miniature 4 wheel driven four-wheel steering greenhouse engine | |
| CN2785966Y (en) | Variable speed drive unit for counter-ride of bicycles | |
| CN206781999U (en) | A kind of wheel driver of gear and chain sprocket Composite Transmission | |
| CN205632003U (en) | Two -degree -of -freedom decoupling zero reduction gears | |
| CN207631425U (en) | A kind of back wheel direct drive variable speed drive | |
| RU154773U1 (en) | TRANSMISSION OF EASY WHEEL ATV WITH ONboard TURN | |
| CN204340684U (en) | A kind of power drive system of two grades of electronlmobils | |
| CN206694508U (en) | A kind of planet wheel decelerator rear axle | |
| CN205523633U (en) | Power system and vehicle with same | |
| JP2002172946A (en) | Tractor | |
| CN205190702U (en) | Multi -functional gearbox is used to tractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211221 Address after: No. 200, National Road, Longtan District, Taoyuan City, Taiwan, China Patentee after: Direct Drive Technology Co.,Ltd. Address before: taoyuan city Patentee before: Zeng Shengcai |