CN210247313U - Multi-power tube circuit board assembling device - Google Patents
Multi-power tube circuit board assembling device Download PDFInfo
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- CN210247313U CN210247313U CN201921034955.3U CN201921034955U CN210247313U CN 210247313 U CN210247313 U CN 210247313U CN 201921034955 U CN201921034955 U CN 201921034955U CN 210247313 U CN210247313 U CN 210247313U
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- circuit board
- plate
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- spring piece
- bottom plate
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- 230000006835 compression Effects 0.000 claims abstract description 35
- 238000007906 compression Methods 0.000 claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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Abstract
The multi-power tube circuit board assembling device is used for assembling a multi-power tube circuit board, a spring piece and a controller radiating bottom plate of a motor controller, and comprises a radiating bottom plate fixing mechanism and a spring piece compression mechanism, wherein the radiating bottom plate fixing mechanism comprises a fixing plate and a positioning column; the spring piece compression mechanism comprises a bottom plate, an upper plate and support plates on two sides, a linear guide rail is fixed on the bottom plate, sliders are arranged on the linear guide rail, a transverse slider connecting plate is fixed on each two sliders, a first longitudinal compression support and a second longitudinal compression support are fixed at two ends of each slider connecting plate, two spring piece clamp strips are arranged, and the spring piece is erected between the two spring piece clamp strips; an air cylinder and an electromagnetic valve are fixed on the supporting plate, and the movable end of the air cylinder is connected with a sliding block connecting plate. The utility model discloses equipment frock easy operation is convenient, and the practicality is nimble, through the compression distance of control spring leaf effectively, installs the multi-power tube circuit board of different thickness fast.
Description
Technical Field
The utility model relates to a machine controller equipment technical field, in particular to many power tube circuit board assembly device.
Background
The new energy automobile does not discharge toxic gas and cause air pollution, and the new energy automobile has the great advantage compared with fuel automobiles and other vehicles. With the rapid development of new energy vehicles, various structures of a core accessory of the new energy vehicle, namely a motor controller, appear. The structural differences arise because of the need to address the heat dissipation of the large number of electronic components, particularly power tubes, within the motor controller. The power tube is the core electronic component of the motor controller and also is the main source of heat generated inside the motor controller, if the generated heat can not be dissipated in time, the service life of the electronic device inside the motor controller can be influenced, and the service life of the motor controller is shortened or even damaged.
Adopt the paster power tube to weld the power tube on aluminium system circuit board earlier, rethread manual use a plurality of screw with aluminium system circuit board fixed on the heat dissipation base platform, nevertheless use such structure to make operation work efficiency low, and make the power tube damage easily, aluminium system circuit board spoilage risees for production and processing cost improves, and the yield is low.
The mode of adopting the spring leaf structure to radiate the power tube circuit board is that when the power tube circuit board is assembled, the clamp strips are manually used, and the multi-power tube circuit board is put into the power tube circuit board after the spring leaf is compressed for a certain distance by the clamp. The assembly process is complex and not easy to operate, the production efficiency is extremely low, and certain dangerousness is realized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve prior art's problem, provide many power tube circuit board assembly device, easy operation is convenient, and the practicality is nimble, and production efficiency and security are high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multi-power tube circuit board assembling device is used for assembling a multi-power tube circuit board, a spring piece and a controller heat dissipation bottom plate of a motor controller and comprises a heat dissipation bottom plate fixing mechanism and a spring piece compression mechanism, wherein the heat dissipation bottom plate fixing mechanism comprises a fixing plate, a plurality of positioning holes are formed in the fixing plate, positioning columns are arranged in the positioning holes, corresponding positioning holes are also formed in the controller heat dissipation bottom plate, and the controller heat dissipation bottom plate is connected and fixed with the fixing plate through the positioning columns. The spring piece compression mechanism comprises a bottom plate, an upper plate and support plates fixed on the front side and the rear side of the bottom plate and the upper plate, wherein the upper plate is provided with two longitudinal step-shaped through holes, four longitudinal linear guide rails are fixed on the bottom plate, each linear guide rail is provided with two slide blocks, each two slide blocks of different linear guide rails are fixed with a transverse slide block connecting plate, the two ends of the two sliding block connecting plates are fixedly provided with longitudinal first compression supports, the two ends of the other two sliding block connecting plates are fixedly provided with longitudinal second compression supports, the first compression supports are provided with a plurality of first clamping blocks, the second compression supports are provided with a plurality of second clamping blocks, the first clamping blocks and the second clamping blocks penetrate through the stepped through holes and are arranged in an opposite and staggered mode, two spring piece clamp strips are arranged between the adjacent first clamping blocks and the second clamping blocks, and the spring piece is erected between the two spring piece clamp strips; an air cylinder and an electromagnetic valve are fixed on the supporting plate, and the movable end of the air cylinder is connected with a sliding block connecting plate. The solenoid valve is arranged in the controller cylinder to control the gas flow direction, and the two cylinders respectively control the first compression bracket and the second compression bracket to move in opposite directions through the sliding block connecting plate.
Preferably, a universal joint is arranged between the movable end of the air cylinder and the sliding block connecting plate. The air cylinder and the outer slide block connecting plate are connected through a universal joint.
Preferably, the left and right sides of the upper plate are fixedly provided with clamp strip correcting blocks, the clamp strip correcting blocks are provided with a plurality of convex blocks, and the convex blocks are positioned between the two spring piece clamp strips and used for improving the deflection deformation of the spring piece clamp strips caused by stress.
Preferably, a plurality of triangular fixing blocks are arranged at the connecting positions of the upper plate or the bottom plate and the supporting plate. Generally, the left side and the right side of the connecting position are respectively provided with one connecting device, so that the mechanism strength is improved.
Preferably, four longitudinal grooves are formed in the bottom plate, and the linear guide rails are fixed in the grooves, so that the mounting precision and the connection strength are improved.
Preferably, the number of each positioning hole on the fixing plate is multiple, and the positioning columns are installed at different positions, so that the controller heat dissipation base plates with different sizes are fixed on the fixing mechanism of the device.
Preferably, the second compression bracket main body is provided with a right-angle bend, and the second clamping block and the first clamping block are on the same longitudinal plane, so that the spring piece is stressed and contracted more uniformly.
Preferably, the turning part of the stepped through hole is provided with a limit block which can limit the displacement stroke of the compression bracket.
Preferably, the two side surfaces of the spring plate are provided with outward protruding outer convex parts, the two sides of the spring plate clamp strip are provided with clamping grooves matched with the end parts of the two sides of the spring plate, and the outer convex parts abut against the multi-power tubes of the multi-power tube circuit board.
Preferably, the spring piece middle connecting section is provided with a limiting hole and a fixing hole, the controller heat dissipation bottom plate is provided with a limiting column and a fixing screw hole, and the spring piece is fixed between the side walls of the controller heat dissipation bottom plate through screws. The outer convex part of the spring leaf presses the multi-power tube of the multi-power tube circuit board on the side wall, and the structure of the limiting hole, the limiting column, the fixing hole and the fixing screw hole is used for positioning and fixing during assembly, such as the movement of the spring leaf when the spring leaf clamp strip is pulled away and the fixation of the assembled spring leaf are avoided.
The beneficial effects of the utility model reside in that: but the good fixed of multiple size controller radiating bottom plate of adaptation, by the gaseous flow direction of solenoid valve circular telegram or outage control, come the controller cylinder and remove, produce the linkage through a series of parts, make the compression of spring leaf, produce the space, realize the swift equipment to the multi-power tube circuit board, easy operation is convenient, and the practicality is nimble, has solved artifical equipment multi-power tube circuit board operation complicacy effectively, and production efficiency is extremely low problem.
According to the scheme, the whole device can be adapted to base tables of different sizes, the applicability is strong, the flexibility is good, the operation is simple, the production efficiency is greatly improved, and the personal safety is ensured.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is an exploded schematic view of the present invention;
FIG. 4 is a perspective view of the upper portion of the fixing plate of the present invention;
FIG. 5 is a perspective view of the spring plate of the present invention;
FIG. 6 is a cross-sectional view of a spring clip strip according to the present invention;
fig. 7 is a perspective view of the fixing plate and the lower portion of the fixing plate according to the present invention;
fig. 8 is a perspective view of the lower portion of the upper plate of the present invention;
fig. 9 is a perspective view of a first compression bracket and a second compression bracket of the present invention;
fig. 10 is a perspective view of the middle bottom plate, the upper plate and the supporting plate of the present invention;
fig. 11 is an assembly diagram of the medium power transistor circuit board according to the present invention.
In the figure: 1. a fixing plate; 1.1, positioning holes; 2. a positioning column; 3. a base plate; 3.1, grooves; 4. an upper plate; 4.1, a step-shaped through hole; 5. a support plate; 6. a linear guide rail; 7. a slider; 8. a slider connecting plate; 9. a first compression bracket; 9.1, a first clamping block; 10. a second compression bracket; 10.1, a second clamping block; 11. a cylinder; 12. an electromagnetic valve; 13. a spring leaf clamp bar; 13.1, clamping the groove; 14. a universal joint; 15. a fixture strip correcting block; 15.1, a bump; 16. a triangular fixed block; 17. a limiting block; 100. a spring plate; 101. an outer convex portion; 102. an end portion; 103. a limiting hole; 200. a controller heat dissipation base plate; 201. a side wall; 202. a limiting column; 300. a multi-power tube circuit board; 301. and (4) multiple power tubes.
Detailed Description
The invention will be further explained by means of the following description and the attached drawings.
The implementation mode is as follows: as shown in fig. 1-5 and fig. 11, the multi-power-tube circuit board assembly apparatus is used for assembling the spring plate 100 of the motor controller, the controller heat dissipation base plate 200 and the multi-power-tube circuit board 300. Two side surfaces of the spring plate 100 are provided with outward protruding outer convex parts 101 and end parts 102, the middle connecting section is provided with a limiting hole 103 and a fixing hole 104, the controller heat dissipation base plate 200 is provided with a plurality of side walls 201, a limiting column 202 and a fixing screw hole 203 are arranged between the side walls 201, the spring plate 100 is fixed between the side walls 201 of the controller heat dissipation base plate 200 through screws, and the outer convex parts 101 press the multi-power tubes 301 of the multi-power tube circuit board 300 on the side walls 201 on the two sides. The assembling device comprises a heat dissipation bottom plate fixing mechanism and a spring piece compression mechanism.
Referring to fig. 7, the heat-dissipating bottom plate fixing mechanism includes a fixing plate 1, a plurality of positioning holes 1.1 are disposed on the fixing plate 1, a plurality of positioning holes 1.1 are disposed in each positioning hole 1.1, and positioning pillars 2 are disposed in the positioning holes 1.1.
Referring to fig. 7-8 and 10, the spring compression mechanism includes a bottom plate 3, an upper plate 4 and support plates 5 fixed to the front and rear sides of the bottom plate 3 and the upper plate 4, a plurality of triangular fixing blocks 16 are disposed at the connection positions of the upper plate 4 or the bottom plate 3 and the support plates 5, and the fixing plate 1 is fixed to the upper plate 4. Two longitudinal stepped through holes 4.1 are formed in the upper plate 4, a limiting block 17 is arranged at the turning part of each stepped through hole 4.1, four longitudinal grooves 3.1 are formed in the bottom plate 3, linear guide rails 6 are respectively fixed in the grooves 3.1, two sliding blocks 7 are arranged on each linear guide rail 6, and a transverse sliding block connecting plate 8 is fixed on each two sliding blocks 7. Wherein, be fixed with cylinder 11 and solenoid valve 12 on the backup pad 5, two cylinder 11 expansion ends are equipped with two slider connecting plates 8 of universal joint 14 connection outside respectively.
Referring to fig. 9, two ends of two of the slider connecting plates 8 are fixed with longitudinal first compression supports 9, two ends of the other two slider connecting plates 8 are fixed with longitudinal second compression supports 10, the first compression supports 9 are provided with a plurality of first clamping blocks 9.1, the second compression supports 10 are provided with a plurality of second clamping blocks 10.1, the first clamping blocks 9.1 and the second clamping blocks 10.1 penetrate through the stepped through holes 4.1 and are arranged in opposite directions in a staggered manner, and the first clamping blocks 9.1 and the second clamping blocks 10.1 are respectively provided with grooves in opposite directions. Wherein, the second compression bracket 10 main body has a right angle bend, and the second clamping block 10.1 and the first clamping block 9.1 are on the same longitudinal plane.
Referring to fig. 6, two spring plate clamp strips 13 are arranged between the adjacent first clamping block 9.1 and the second clamping block 10.1, the spring plate 100 is erected between the two spring plate clamp strips 13, and clamping grooves 13.1 matched with the end portions 102 on the two sides of the spring plate 100 are formed on the two sides of each spring plate clamp strip 13. Wherein, the left and right sides of the upper plate 4 are fixed with a clamp strip correcting block 15, the clamp strip correcting block 15 is provided with a plurality of convex blocks 15.1, and the convex blocks 15.1 are positioned between the end parts of the two spring piece clamp strips 13.
The working mode is as follows: the spring plate 100 is placed between the spring plate clamp bars 13 and then placed into the controller heat sink base plate 200, then, the controller heat dissipation base plate 200 is placed on the fixing plate 1, and is limited and fixed through the positioning column 2 and the fixing screw to ensure stability, after the electromagnetic valve 12 is electrified, the air enters the two air cylinders 11 to push the universal joint 14 connected with the air cylinders, the universal joint 14 drives the slide block connecting plate 8 fixed on the slide block 7 to move towards the middle, at the moment, the first compression bracket 9 and the second compression bracket 10 fixed on the slide block connecting plate 8 also move relatively, the distance between the first clamping block 9.1 and the second clamping block 10.1 is reduced, so that the distance between the spring piece clamp strips 13 which are previously placed on the spring piece 100 is reduced, thereby compressing the spring plate 100, and placing the multi-power tube circuit board 300 after a sufficient gap is generated between the outer convex part 101 of the spring plate 100 and the side wall 201 of the controller heat dissipation base plate 200. After the above operations are completed, the electromagnetic valve 12 is powered off, the cylinder 11 is reset, the spring plate 100 opens the outer convex part 101 to press the multi-power tube 301 part of the multi-power tube circuit board 300 on the side wall 201, and the spring plate clamp strip 13 is removed, so that the mounted multi-power tube circuit board 300, the spring plate 100 and the controller heat dissipation bottom plate 200 can be removed.
The above description is only the specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, the present invention can be used in similar products, and any person skilled in the art is in the field of the present invention, and all the changes or modifications made are covered by the claims of the present invention.
Claims (10)
1. Multi-power tube circuit board assembly quality for the spring leaf (100) of machine controller, the equipment of controller radiating bottom plate (200) and multi-power tube circuit board (300), its characterized in that: the heat dissipation base plate fixing mechanism comprises a fixing plate (1), a plurality of positioning holes (1.1) are formed in the fixing plate (1), and positioning columns (2) are arranged in the positioning holes (1.1);
the spring piece compression mechanism comprises a bottom plate (3), an upper plate (4) and support plates (5) fixed on the front side and the rear side of the bottom plate (3) and the upper plate (4), wherein two longitudinal step-shaped through holes (4.1) are formed in the upper plate (4), four longitudinal linear guide rails (6) are fixed on the bottom plate (3), two sliders (7) are arranged on each linear guide rail (6), a transverse slider connecting plate (8) is fixed on each two sliders (7), a longitudinal first compression support (9) is fixed at two ends of each slider connecting plate (8), a longitudinal second compression support (10) is fixed at two ends of each other two slider connecting plate (8), a plurality of first clamping blocks (9.1) are arranged on the first compression support (9), a plurality of second clamping blocks (10.1) are arranged on the second compression support (10), the first clamping blocks (9.1) and the second clamping blocks (10.1) penetrate through the step-shaped through holes (4.1) and are arranged in an opposite and staggered mode, two spring piece clamp strips (13) are arranged between the adjacent first clamping block (9.1) and the second clamping block (10.1), and the spring piece (100) is erected between the two spring piece clamp strips (13);
an air cylinder (11) and an electromagnetic valve (12) are fixed on the supporting plate (5), and the movable end of the air cylinder (11) is connected with a sliding block connecting plate (8).
2. The multiple power transistor circuit board assembly device of claim 1, wherein: and a universal joint (14) is arranged between the movable end of the air cylinder (11) and the sliding block connecting plate (8).
3. The multiple power transistor circuit board assembly device of claim 1, wherein: the clamp strip straightening block (15) is fixed on the left side and the right side of the upper plate (4), a plurality of convex blocks (15.1) are arranged on the clamp strip straightening block (15), and the convex blocks (15.1) are located between the two spring piece clamp strips (13).
4. The multiple power transistor circuit board assembly device of claim 1, wherein: and a plurality of triangular fixing blocks (16) are arranged at the connecting positions of the upper plate (4) or the bottom plate (3) and the supporting plate (5).
5. The multiple power transistor circuit board assembly device of claim 1, wherein: four longitudinal grooves (3.1) are formed in the bottom plate (3), and the linear guide rails (6) are fixed in the grooves (3.1).
6. The multiple power transistor circuit board assembly device of claim 1, wherein: the number of each positioning hole (1.1) on the fixing plate (1) is multiple.
7. The multiple power transistor circuit board assembly device of claim 1, wherein: the main body of the second compression bracket (10) is provided with a right-angle bend, and the second clamping block (10.1) and the first clamping block (9.1) are on the same longitudinal plane.
8. The multiple power transistor circuit board assembly device of claim 7, wherein: and a limit block (17) is arranged at the turning part of the stepped through hole (4.1).
9. The multiple power transistor circuit board assembly device of any one of claims 1 to 8, wherein: two sides of the spring piece (100) are provided with outward convex parts (101), and two sides of the spring piece clamp strip (13) are provided with clamping grooves (13.1) matched with the end parts (102) on the two sides of the spring piece (100).
10. The multiple power transistor circuit board assembly device of claim 9, wherein: spacing hole (103) and fixed orifices (104) are equipped with on the spring leaf (100) intermediate junction section, are equipped with spacing post (202) and fixed screw (203) on controller radiating bottom plate (200), and spring leaf (100) are fixed in between lateral wall (201) of controller radiating bottom plate (200) through the screw, and outer convex part (101) are pressed multi-power tube (301) of multi-power tube circuit board (300) on lateral wall (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921034955.3U CN210247313U (en) | 2019-07-04 | 2019-07-04 | Multi-power tube circuit board assembling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921034955.3U CN210247313U (en) | 2019-07-04 | 2019-07-04 | Multi-power tube circuit board assembling device |
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| Publication Number | Publication Date |
|---|---|
| CN210247313U true CN210247313U (en) | 2020-04-03 |
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ID=69989657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921034955.3U Active CN210247313U (en) | 2019-07-04 | 2019-07-04 | Multi-power tube circuit board assembling device |
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| Country | Link |
|---|---|
| CN (1) | CN210247313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110325008A (en) * | 2019-07-04 | 2019-10-11 | 杭州洲钜电子科技有限公司 | More power transistor circuits board group assembling devices |
-
2019
- 2019-07-04 CN CN201921034955.3U patent/CN210247313U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110325008A (en) * | 2019-07-04 | 2019-10-11 | 杭州洲钜电子科技有限公司 | More power transistor circuits board group assembling devices |
| CN110325008B (en) * | 2019-07-04 | 2024-03-22 | 杭州洲钜电子科技有限公司 | Multi-power tube circuit board assembling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Multi power transistor circuit board assembly device Effective date of registration: 20211203 Granted publication date: 20200403 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2021980014045 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220322 Granted publication date: 20200403 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2021980014045 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Multi power transistor circuit board assembly device Effective date of registration: 20220322 Granted publication date: 20200403 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2022990000159 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221220 Granted publication date: 20200403 Pledgee: Shanghai Guotai Junan Securities Asset Management Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2022990000159 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Jintou Finance Leasing Co.,Ltd. Assignor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Contract record no.: X2022980028697 Denomination of utility model: Multi-power tube circuit board assembly device Granted publication date: 20200403 License type: Exclusive License Record date: 20230112 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Multi-power tube circuit board assembly device Effective date of registration: 20230115 Granted publication date: 20200403 Pledgee: Hangzhou Jintou Finance Leasing Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2023980031393 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Assignee: Hangzhou Jintou Finance Leasing Co.,Ltd. Assignor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Contract record no.: X2022980028697 Date of cancellation: 20240327 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200403 Pledgee: Hangzhou Jintou Finance Leasing Co.,Ltd. Pledgor: HANGZHOU ZHOUJU ELECTRONIC TECHNOLOGICAL Co.,Ltd. Registration number: Y2023980031393 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |