CN214851980U - Durable PCB circuit board - Google Patents
Durable PCB circuit board Download PDFInfo
- Publication number
- CN214851980U CN214851980U CN202121052468.7U CN202121052468U CN214851980U CN 214851980 U CN214851980 U CN 214851980U CN 202121052468 U CN202121052468 U CN 202121052468U CN 214851980 U CN214851980 U CN 214851980U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- heat
- fixedly connected
- plates
- bottom frame
- 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.)
- Expired - Fee Related
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000741 silica gel Substances 0.000 claims abstract description 11
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 description 16
- 238000005457 optimization Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a durable PCB circuit board, which belongs to the technical field of circuit boards, and the technical proposal is characterized in that the circuit board comprises a circuit board, the circuit board is placed in a rectangular frame enclosed between a bottom frame, two fixed plates and movable plates, thereby protecting the edge of the circuit board, and simultaneously, a pull rod can be pulled upwards according to the size of the circuit board, so that the pull rod drives the two movable plates to move upwards, the other ends of the two movable plates rise in a cavity, a spring is stressed and stretched at the same time until the circuit board is completely placed in, simultaneously, the lower end surfaces of a rubber pad and an insulating pad are both contacted with the upper end surface of the circuit board, when the circuit board generates heat, the heat of the circuit board can be absorbed through three aluminum-based heat-dissipating plates and then transmitted to a plurality of heat-conducting silica gel strips, the heat is transmitted to a heat-dissipating fin through the heat-conducting silica gel strips, thereby realizing the timely dissipation of the heat generated by the circuit board, thereby improving the service life of the circuit board and prolonging the durability of the circuit board.
Description
Technical Field
The utility model relates to a circuit board technical field, in particular to durability PCB circuit board.
Background
The PCB, namely a printed circuit board, also called a printed circuit board, is a provider of electrical connection of electronic components, and the development of the PCB has been over 100 years; the design of the method is mainly layout design; the circuit board has the main advantages of greatly reducing errors of wiring and assembly, and improving the automation level and the production labor rate.
However, the existing PCB has the following problems:
1. the existing PCB needs to be punched and fixed during installation, certain damage can be caused to the PCB in the using process, the service life of the PCB is further shortened, and the durability is low;
2. the existing PCB can not be flexibly adjusted according to different sizes of the circuit board, a large amount of heat can be generated in the using process, and if the generated heat can not be dissipated in time, electronic components on the PCB can be damaged, so that the durability of the circuit board is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a durability PCB circuit board aims at solving and can cause certain damage to PCB circuit board in the use, and then reduces PCB circuit board's life, and the durability is lower, can not be according to the not flexible problem of adjusting of unidimensional of circuit board simultaneously.
The utility model is realized in such a way, a durable PCB circuit board comprises a bottom frame, a circuit board is arranged above the bottom frame, fixed plates are arranged at the left side and the right side of the circuit board, the lower end surfaces of the two fixed plates are contacted with the left side and the right side of the upper end surface of the bottom frame, cavities are arranged inside the two fixed plates, movable plates are arranged at the left side and the right side of the upper end surface of the circuit board, the other ends of the two movable plates penetrate through the upper end surface of the cavities and extend to the interiors of the cavities, springs are fixedly connected with the upper end surface of the bottom frame, three aluminum-based heat dissipation plates are fixedly connected with the upper end surface of the bottom frame, a plurality of heat-conducting silicon adhesive tapes are fixedly connected with the lower end surfaces of the three aluminum-based heat dissipation plates, heat dissipation fins are fixedly connected with the bottom ends inside the grooves, and the upper end surfaces of the heat dissipation fins are fixedly connected with the other ends of the plurality of the heat-conducting silicon adhesive tapes, two the fixed slot has all been seted up to the inside lower terminal surface of fixed plate, the inside of underframe left and right sides has all been seted up and has been placed the chamber, two the up end of placing the intracavity portion all installs the movable plate, two the inside of placing the chamber all installs the dead lever, two the upper and lower both ends of dead lever run through the upper and lower both ends of placing chamber and underframe respectively in proper order and extend to the inside of fixed slot and the below of underframe respectively, two the inside of placing the chamber all installs two extrusion springs, four the extrusion spring is located the left and right sides of two dead levers respectively.
In order to protect the circuit board, the utility model discloses a durability PCB circuit board is preferred, the up end of circuit board has supported the rubber pad, the top of rubber pad is provided with the connecting plate, install a plurality of compression springs between connecting plate and the rubber pad, the up end and two of connecting plate the inside wall fixed connection of fly leaf.
In order to improve the life of circuit board, the utility model discloses a durability PCB circuit board is preferred, the up end fixedly connected with protection of underframe is filled up, the protection is filled up the up end that is located three aluminium base heating panel, the up end that the protection was filled up and the lower terminal surface butt of circuit board.
In order to improve the durability of circuit board, the utility model discloses a durability PCB circuit board is preferred, two install insulating the pad between the inside wall of fly leaf all and the left and right sides of circuit board.
In order to cushion the fly leaf, avoid its and the bottom direct contact of cavity, the utility model discloses a durability PCB circuit board is preferred, two the equal fixedly connected with blotter of lower terminal surface of spring.
In order to realize dismantling or installing underframe and two fixed plates, the utility model discloses a durability PCB circuit board is preferred, the lower terminal surface of underframe runs through the through-hole of having seted up a plurality of evenly distributed, two the equal fixedly connected with of lower terminal surface pull block of dead lever.
In order to adjust according to the circuit board size is nimble, the utility model discloses a durability PCB circuit board is preferred, two fixedly connected with pull rod between the relative one end of fly leaf up end.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the durable PCB circuit board is characterized in that the circuit board is placed in a rectangular frame enclosed by a bottom frame, two fixed plates and two movable plates, the edge of the circuit board can be protected, abrasion caused by long-time use of the circuit board is avoided, meanwhile, a pull rod can be pulled upwards according to the size of the circuit board, the pull rod drives the two movable plates to move upwards, the other ends of the two movable plates are promoted to rise in a cavity, meanwhile, a spring is stressed and stretched until the circuit board is completely placed in the cavity, the lower end faces of a rubber pad and an insulating pad are both contacted with the upper end face of the circuit board, when the circuit board generates heat, the heat of the circuit board can be absorbed through three aluminum-based heat dissipation plates and then transferred to a plurality of heat conduction silica gel strips, the heat can be transferred to a heat dissipation plate through the heat conduction silica gel strips, the heat of the heat dissipation plate can be dissipated to the outside through a plurality of through holes, and the heat generated by the circuit board can be timely dissipated, when different circuit boards need to be replaced, the pull block can be manually pulled downwards, so that the pull block drives the fixed rod to move downwards in the placing cavity, the fixed rod drives the movable plate to move downwards, the movable plate can extrude the extrusion spring to compress the extrusion spring until the fixed rod is separated from the fixed groove, and the bottom frame can be separated from the two fixed plates, so that the effect of facilitating replacement of the circuit boards is achieved;
2. according to the durable PCB circuit board, the upper end face of the circuit board can be protected through the insulating pad, friction between the circuit board and the movable plate is reduced, and abrasion of the circuit board caused by long-time use is avoided, so that the durability of the circuit board is improved;
in conclusion, the durable PCB circuit board realizes the protection and fixation of the outer wall of the circuit board, can timely emit heat generated by the circuit board, and can flexibly adjust the effect according to different sizes of the circuit board, thereby improving the service life and the durability of the circuit board.
Drawings
Fig. 1 is an overall structure diagram of a durable PCB of the present invention;
FIG. 2 is a cross-sectional view of the connecting plate and rubber pad of the present invention;
fig. 3 is a structural view of the inside of the bottom frame of the present invention;
fig. 4 is an enlarged structural view of a portion a of fig. 1 according to the present invention.
In the figure, 1, a circuit board; 2. a fixing plate; 201. a cavity; 202. fixing grooves; 3. a movable plate; 301. a spring; 302. a cushion pad; 303. a pull rod; 4. a connecting plate; 401. a compression spring; 402. a rubber pad; 5. a bottom frame; 501. a groove; 502. a heat sink; 503. a heat-conducting silica gel strip; 504. an aluminum-based heat dissipation plate; 505. a protective pad; 506. a through hole; 6. an insulating pad; 7. a placement chamber; 701. moving the plate; 702. a compression spring; 703. fixing the rod; 704. and (5) pulling the block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-4, the present invention provides a technical solution: a durable PCB circuit board comprises a bottom frame 5, a circuit board 1 is arranged above the bottom frame 5, fixed plates 2 are arranged on the left side and the right side of the circuit board 1, the lower end surfaces of the two fixed plates 2 are in contact with the left side and the right side of the upper end surface of the bottom frame 5, cavities 201 are formed in the two fixed plates 2, movable plates 3 are mounted on the left side and the right side of the upper end surface of the circuit board 1, the other ends of the two movable plates 3 penetrate through the upper end surface of the cavity 201 and extend into the cavities 201, springs 301 are fixedly connected with the movable plates, grooves 501 are formed in the upper end surface of the bottom frame 5, three aluminum-based heat dissipation plates 504 are fixedly connected with the upper end surface of the bottom frame 5, a plurality of heat conduction silicon adhesive tapes 503 are fixedly connected with the lower end surfaces of the three aluminum-based heat dissipation plates 504, cooling fins 502 are fixedly connected with the bottom ends of the grooves 501, and the upper end surfaces of the cooling fins 502 are fixedly connected with the other ends of the plurality of the heat conduction silicon adhesive tapes 503, fixed slot 202 has all been seted up to the lower terminal surface of two fixed plate 2 insides, the inside of underframe 5 left and right sides has all been seted up and has been placed chamber 7, two are placed the inside up end in chamber 7 and all install movable plate 701, two are placed the inside in chamber 7 and all install dead lever 703, the upper and lower both ends of two dead levers 703 run through the upper and lower both ends of placing chamber 7 and underframe 5 respectively in proper order and extend to the inside of fixed slot 202 and the below of underframe 5 respectively, two are placed the inside of chamber 7 and all install two extrusion springs 702, four extrusion springs 702 are located the left and right sides of two dead levers 703 respectively.
In this embodiment: the circuit board 1 is placed in a rectangular frame enclosed by a bottom frame 5, two fixed plates 2 and two movable plates 3, the edge of the circuit board 1 can be protected, abrasion caused by long-time use of the circuit board is avoided, meanwhile, a pull rod 303 can be pulled upwards according to the size of the circuit board 1, the pull rod 303 drives the two movable plates 3 to move upwards, the other ends of the two movable plates 3 are enabled to rise in a cavity 201, meanwhile, a spring 301 is stressed and stretched until the circuit board 1 is completely placed in, meanwhile, the lower end faces of a rubber pad 402 and an insulating pad 6 are both contacted with the upper end face of the circuit board 1, when the circuit board 1 generates heat, the heat of the circuit board 1 can be absorbed through three aluminum-based heat dissipation plates 504 and then transferred to a plurality of heat conduction silica gel strips 503, the heat is transferred to a heat dissipation plate 502 through the heat conduction silica gel strips 503, and the heat of the heat dissipation plate 502 can be dissipated to the outside through the plurality of through holes 506, when different circuit boards 1 need to be replaced, the pulling block 704 can be manually pulled downwards, the pulling block 704 drives the fixing rod 703 to move downwards in the placing cavity 7, the fixing rod 703 drives the moving plate 701 to move downwards, meanwhile, the moving plate 701 can extrude the extrusion spring 702 to compress the extrusion spring 702 until the fixing rod 703 is separated from the fixing groove 202, and then the bottom frame 5 can be separated from the two fixing plates 2, so that the effect of conveniently replacing the circuit boards 1 is achieved.
As a technical optimization scheme of the utility model, the up end of circuit board 1 has supported rubber pad 402, and the top of rubber pad 402 is provided with connecting plate 4, installs a plurality of compression springs 401 between connecting plate 4 and the rubber pad 402, the up end of connecting plate 4 and the inside wall fixed connection of two fly leaf 3.
In this embodiment: can avoid fly leaf 3 and the up end direct contact of circuit board 1 through rubber pad 402, simultaneously when adjusting fly leaf 3, can protect circuit board 1 through the mutually supporting of compression spring 401 and rubber pad 402, when avoiding circuit board 1 to receive vibrations, lead to the circuit separation rather than being connected to influence its life.
As a technical optimization scheme of the utility model, underframe 5's up end fixedly connected with protection pad 505, protection pad 505 are located the up end of three aluminium base heating panel 504, and the up end of protection pad 505 and the lower terminal surface butt of circuit board 1.
In this embodiment: the lower end surface of the circuit board 1 can be protected by the protection pad 505, so that the circuit board is prevented from being worn due to direct contact with the upper end surface of the bottom frame 5, and the service life of the circuit board 1 is prolonged.
As a technical optimization scheme of the utility model, install insulating pad 6 between the inside wall of two fly leaf 3 all and the left and right sides of circuit board 1.
In this embodiment: the upper end face of the circuit board 1 can be protected by the insulating pad 6, friction between the circuit board and the movable plate 3 is reduced, abrasion of the circuit board 1 caused by long-time use is avoided, and therefore the durability of the circuit board 1 is improved.
As a technical optimization scheme of the utility model, the equal fixedly connected with blotter 302 of lower terminal surface of two springs 301.
In this embodiment: the movable plate 3 can be cushioned by the cushion pad 302 to avoid direct contact with the bottom of the cavity 201.
As a technical optimization scheme of the utility model, the lower terminal surface of underframe 5 runs through the through-hole 506 of having seted up a plurality of evenly distributed, and the equal fixedly connected with of lower terminal surface of two dead levers 703 draws piece 704.
In this embodiment: the bottom frame 5 and the two fixing plates 2 are detached or installed by the through holes 506 for radiating heat of the radiating fins 502 absorbed by the circuit board 1 and the pulling blocks 704 for pulling the fixing rods 703 to move.
As a technical optimization scheme of the utility model, fixedly connected with pull rod 303 between the relative one end of two fly leaf 3 up end.
In this embodiment: the two movable plates 3 are pulled to move upwards in the cavity 201 by the pull rod 303, so that the effect of flexible adjustment according to the size of the circuit board 1 is achieved.
The working principle is as follows: the circuit board 1 is placed in a rectangular frame enclosed by a bottom frame 5, two fixed plates 2 and two movable plates 3, the edge of the circuit board 1 can be protected, abrasion caused by long-time use of the circuit board is avoided, meanwhile, a pull rod 303 can be pulled upwards according to the size of the circuit board 1, the pull rod 303 drives the two movable plates 3 to move upwards, the other ends of the two movable plates 3 are enabled to rise in a cavity 201, meanwhile, a spring 301 is stressed and stretched until the circuit board 1 is completely placed in, meanwhile, the lower end faces of a rubber pad 402 and an insulating pad 6 are both contacted with the upper end face of the circuit board 1, when the circuit board 1 generates heat, the heat of the circuit board 1 can be absorbed through three aluminum-based heat dissipation plates 504 and then transferred to a plurality of heat conduction silica gel strips 503, the heat is transferred to a heat dissipation plate 502 through the heat conduction silica gel strips 503, and the heat of the heat dissipation plate 502 can be dissipated to the outside through the plurality of through holes 506, when different circuit boards 1 need to be replaced, the pulling block 704 can be manually pulled downwards, the pulling block 704 drives the fixing rod 703 to move downwards in the placing cavity 7, the fixing rod 703 drives the moving plate 701 to move downwards, meanwhile, the moving plate 701 can extrude the extrusion spring 702 to compress the extrusion spring 702 until the fixing rod 703 is separated from the fixing groove 202, and then the bottom frame 5 can be separated from the two fixing plates 2, so that the effect of conveniently replacing the circuit boards 1 is achieved.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A durability PCB circuit board, includes underframe (5), its characterized in that: the solar cell comprises a bottom frame (5), a circuit board (1) is arranged above the bottom frame (5), fixed plates (2) are arranged on the left side and the right side of the circuit board (1), the lower end faces of the two fixed plates (2) are in contact with the left side and the right side of the upper end face of the bottom frame (5), cavities (201) are formed in the two fixed plates (2), movable plates (3) are mounted on the left side and the right side of the upper end face of the circuit board (1), the other ends of the two movable plates (3) penetrate through the upper end face of the cavities (201) and extend into the cavities (201), springs (301) are fixedly connected with the other ends of the two movable plates, grooves (501) are formed in the upper end face of the bottom frame (5), three aluminum-based heating panels (504) are fixedly connected with the upper end face of the bottom frame (5), a plurality of heat-conducting silica gel strips (503) are fixedly connected with the lower end faces of the three aluminum-based heating panels (504), and cooling fins (502) are fixedly connected with the bottom end of the inner portion of each groove (501), the up end of fin (502) and the other end fixed connection of a plurality of heat conduction silica gel strips (503), two fixed slot (202) have all been seted up to the lower terminal surface of fixed plate (2) inside, chamber (7), two have all been seted up to the inside of underframe (5) left and right sides place the up end of chamber (7) inside and all install movable plate (701), two place the inside of chamber (7) and all install dead lever (703), two the upper and lower both ends of dead lever (703) run through the upper and lower both ends of placing chamber (7) and underframe (5) respectively in proper order and extend to the inside of fixed slot (202) and the below of underframe (5) respectively, two place the inside of chamber (7) and all install two extrusion springs (702), four extrusion spring (702) are located the left and right sides of two dead levers (703) respectively.
2. A durable PCB circuit board according to claim 1, wherein: the upper end face of the circuit board (1) is abutted to a rubber pad (402), a connecting plate (4) is arranged above the rubber pad (402), a plurality of compression springs (401) are installed between the connecting plate (4) and the rubber pad (402), and the upper end face of the connecting plate (4) is fixedly connected with the inner side walls of the two movable plates (3).
3. A durable PCB circuit board according to claim 1, wherein: the up end fixedly connected with protection pad (505) of underframe (5), protection pad (505) are located the up end of three aluminium base heating panel (504), the up end of protection pad (505) and the lower terminal surface butt of circuit board (1).
4. A durable PCB circuit board according to claim 1, wherein: and insulating pads (6) are arranged between the inner side walls of the two movable plates (3) and the left side and the right side of the circuit board (1).
5. A durable PCB circuit board according to claim 1, wherein: the lower end faces of the two springs (301) are fixedly connected with cushion pads (302).
6. A durable PCB circuit board according to claim 1, wherein: the lower end face of the bottom frame (5) penetrates through a plurality of uniformly distributed through holes (506), and the lower end faces of the two fixing rods (703) are fixedly connected with pull blocks (704).
7. A durable PCB circuit board according to claim 1, wherein: a pull rod (303) is fixedly connected between the opposite ends of the upper end faces of the two movable plates (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121052468.7U CN214851980U (en) | 2021-05-17 | 2021-05-17 | Durable PCB circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121052468.7U CN214851980U (en) | 2021-05-17 | 2021-05-17 | Durable PCB circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214851980U true CN214851980U (en) | 2021-11-23 |
Family
ID=78774651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121052468.7U Expired - Fee Related CN214851980U (en) | 2021-05-17 | 2021-05-17 | Durable PCB circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214851980U (en) |
-
2021
- 2021-05-17 CN CN202121052468.7U patent/CN214851980U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214851980U (en) | Durable PCB circuit board | |
| CN213365376U (en) | Notebook computer with high heat dissipation performance | |
| CN212783432U (en) | Novel ESD transistor | |
| CN214901176U (en) | Embedded network switch | |
| CN210899817U (en) | Circuit board module with high-efficiency heat dissipation | |
| CN210092063U (en) | High-power field effect tube pressing heat dissipation device | |
| CN219876571U (en) | Industrial control power supply circuit board | |
| CN221575834U (en) | Insulating protection mechanism of semiconductor laser power supply | |
| CN221103642U (en) | Circuit board with clamping terminal structure | |
| CN219802983U (en) | Shielding cover with good heat dissipation effect | |
| CN219999861U (en) | Heat radiating device and electronic element | |
| CN221264062U (en) | Circuit board with buffering shock-absorbing structure | |
| CN220087724U (en) | Mainboard structure with TYPEC interface | |
| CN220383282U (en) | Circuit board with heat radiation structure | |
| CN216849518U (en) | High-efficient radiating combination formula resistance box | |
| CN221598460U (en) | Electronic information equipment protection device | |
| CN221784556U (en) | External radiating PCBA structure | |
| CN220108516U (en) | Mainboard heat dissipation mechanism for intelligent voice interaction equipment | |
| CN219087628U (en) | Radiator mounting structure capable of improving assembly efficiency | |
| CN219351979U (en) | PCB board of thick copper HDI | |
| CN213718481U (en) | PCB heat radiation structure | |
| CN221748426U (en) | Dustproof gateway equipment matched with computer | |
| CN214800429U (en) | Heat radiation structure | |
| CN210120700U (en) | High-heat-dissipation copper-clad plate | |
| CN219124529U (en) | High-frequency high-speed circuit board for 5G communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |