CN213404011U - Penetrating type heat dissipation device - Google Patents
Penetrating type heat dissipation device Download PDFInfo
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- CN213404011U CN213404011U CN202022828208.6U CN202022828208U CN213404011U CN 213404011 U CN213404011 U CN 213404011U CN 202022828208 U CN202022828208 U CN 202022828208U CN 213404011 U CN213404011 U CN 213404011U
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Abstract
The utility model relates to a penetrating type heat abstractor for being surveyed board card chip, include: a transmissive heat sink module; the penetrating heat dissipation module comprises a penetrating heat dissipation block; the penetrating type heat dissipation block comprises a penetrating type column, a heat dissipation block contact boss is arranged at the lower end of the penetrating type column, a heat dissipation block guide column is arranged at the upper end of the penetrating type column, an installation threaded hole is formed in the inner side of the heat dissipation block guide column, and a heat dissipation block floating spring is sleeved on the outer side of the heat dissipation block guide column; the radiating block guide post of penetrating type radiating block passes the through-hole of guide vane, the radiating module base plate still is provided with the radiating block guide way, the mounting screw hole spiro union of high screw such as radiating block passing the fast guide way of heat dissipation and radiating block guide post makes the penetrating type radiating block fix on the radiating module base plate, and above-mentioned utility model makes the calorific capacity of being surveyed board card back chip, will pass through the heat conduction indium piece to the transmission of penetrating type square post, through the square post of penetrating type with heat transfer to the terminal radiating fin that has of the square post of penetrating type.
Description
Technical Field
The utility model relates to a heat abstractor technical field, concretely relates to penetrating type heat abstractor for being surveyed board card chip.
Background
With the rapid development of electronic product technology and the increasing requirements for process efficiency and yield, the electronic industry gradually starts to enhance the development and optimization of product function test equipment while improving the process efficiency of electronic products. Among them, the requirement for the function test of the mainboard of the electronic product is the most urgent. In the testing process of the high-performance chip, the heat dissipation efficiency of the heat dissipation module of the chip is the most critical.
The chip of the board card to be tested is divided into two types, one type is the chip on the front side of the board card to be tested, and the other type is the chip on the back side of the board card to be tested. For the heat dissipation of the back chip of the tested board card, the test industry generally adopts the air pipe to blow and dissipate heat, and the heat dissipation mode has the following defects:
firstly, the needle support plate is provided with an inner cavity which is provided with an air pipe heat dissipation device, heat dissipation airflow is always accumulated in the inner cavity of the needle support plate, and heat cannot be dissipated.
Secondly, the air pipe heat dissipation scheme of blowing generally needs to introduce air compression equipment in order to guarantee the amount of wind, needs the needle carrier plate to reserve great inner chamber for the relevant tuber pipe subassembly of installation, and the inner chamber region is very easily overlapped in test pinhole position, and the needle under the direct influence test point is compatible different by the ability of being surveyed the product chip poor.
Thirdly, the structure of the air pipe assembly and the air compression equipment is complex, the installation and design difficulty is high, and the design and processing cost is increased. Meanwhile, the assembly and disassembly are complex, which is not beneficial to assembly, disassembly and maintenance.
Fourthly, for the back chip with high working power and large heat productivity, the air pipe blowing heat dissipation mode cannot meet the heat dissipation requirement, the test is poor, and even the board burning risk exists.
Therefore, technical barriers exist in the design of heat dissipation of the chip on the back of the tested board card all the time, and a heat dissipation scheme which is more efficient in heat dissipation, simpler in structure and more convenient to disassemble and assemble is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a penetrating heat abstractor specifically is a penetrating heat abstractor who is used for being surveyed the board card chip for the calorific capacity of being surveyed board card back chip will be through the transmission of heat conduction indium piece to the square post of penetrating, through the square post of penetrating on the penetrating radiating block, with the heat of radiating block contact boss on passing to the radiating block radiating fin.
The utility model provides a penetrating type heat dissipation device, include: a transmissive heat sink module; the penetrating heat dissipation module comprises a heat dissipation module substrate, a heat dissipation block equal-height screw, an air guide cover, a turbofan, a heat dissipation block floating spring and a penetrating heat dissipation block; the air guide cover is arranged on the bottom surface of the radiating module substrate and comprises a through hole, and the turbofan is arranged on the air guide cover;
the penetrating type heat dissipation block comprises a penetrating type column, a heat dissipation block contact boss is arranged at the lower end of the penetrating type column, a heat dissipation block guide column is arranged at the upper end of the penetrating type column, an installation threaded hole is formed in the inner side of the heat dissipation block guide column, and a heat dissipation block floating spring is sleeved on the outer side of the heat dissipation block guide column; the radiating block guide post of the penetrating radiating block penetrates through the through hole of the air guide cover, the radiating module substrate is further provided with a radiating block guide groove, and the equal-height screws of the radiating block penetrate through the radiating block quick guide groove and are in threaded connection with the mounting threaded hole of the radiating block guide post, so that the penetrating radiating block is fixed on the radiating module substrate.
Preferably, the test device further comprises a heat conduction indium sheet, the heat dissipation block contact boss is matched with the heat conduction indium sheet, the heat conduction indium sheet is sleeved outside the heat dissipation block contact boss, one surface of the heat conduction indium sheet is in contact with the end face of the penetrating heat dissipation block contact boss, and the other surface of the heat conduction indium sheet is in surface contact with the tested heating chip.
Preferably, the heat dissipation module further comprises 4 heat dissipation module support columns, the 4 heat dissipation module support columns penetrate through holes in four corners of the heat dissipation module substrate and are mounted on the third layer of needle plate, the air guide cover is located in a space formed by the 4 heat dissipation module support columns, the air guide cover further comprises a guide through groove, and the turbofan is mounted in the guide through groove of the air guide cover.
Preferably, the fixing device further comprises a turbofan fixing screw, threaded holes are formed in two ends of the turbofan, and the turbofan fixing screw penetrates through the threaded holes to fix the turbofan on the third layer needle plate.
Preferably, the heat dissipation device further comprises a heat dissipation block heat dissipation fin, the heat dissipation block heat dissipation fin is connected with the tail end of the penetrating column through welding to dissipate heat on the penetrating column, and the heat dissipation block heat dissipation fin is perpendicular to the penetrating column.
Preferably, the air guide cover further comprises a mounting groove for wrapping and mounting the radiating block radiating fins and limiting the air flow of the turbofan to intensively pass through the radiating block radiating fin area.
Preferably, the number of the penetrating columns is 3, the penetrating columns are penetrating square columns, and the radiating block guide grooves are radiating block guide square grooves.
Preferably, the radiating block contact boss passes the back contact of keeping away a logical groove and being surveyed the board card chip in the needle support plate module, wherein needle support plate module includes support plate module and faller module, it installs on the support plate module to be surveyed the board card chip, the faller module is installed in the below of support plate module, just be provided with support plate floating spring between faller module and the support plate module.
Preferably, the faller module includes first layer faller, second floor faller, third layer faller, fourth layer faller, fifth layer faller and signal switching integrated circuit board, first layer faller, second floor faller, third layer faller, fourth layer faller, fifth layer faller and signal switching integrated circuit board from the top down set gradually, just first layer faller, second layer faller, third layer faller, fourth layer faller, fifth layer faller and signal switching integrated circuit board and support plate module all are provided with the through-hole, and it forms keeps away a logical groove.
Preferably, the first layer of faller boards and the second layer of faller boards lock the top surface at the third layer of faller board from top to bottom, fourth layer of faller board, fifth layer of faller board and signal switching integrated circuit board lock the bottom surface at the third layer of faller board from top to bottom.
Preferably, the cross section of the penetrating square column is equal to the area of the tested card chip.
Compare with tuber pipe heat radiation structure of blowing, the utility model provides a penetrating type heat radiation structure, its produced beneficial effect is:
firstly, a penetrating structure is adopted, penetrating square columns with cross sections equal to the area of a micro chip are adopted for conducting heat, a position avoiding through groove of the penetrating square columns is designed on a pin carrier plate, and the cross sections of the penetrating square columns can be designed to be consistent with the area of the chip, so that the position avoiding space of the pin carrier plate can be greatly reduced, the risk of overlapping of a position avoiding area and a testing pin hole position is effectively reduced, and the influence on pin hole design is effectively reduced. Meanwhile, the cross section of the penetrating square column is small, so that the influence of the support plate support design near the chip can be reduced.
Secondly, a penetrating structure is adopted, a penetrating pin support plate is in contact with a chip on the back of a tested plate card through a penetrating square column, the tail end of the penetrating square column is provided with array fins which are unfolded left and right, the heat of the chip is transmitted to heat dissipation fins at the tail end of the penetrating square column through the penetrating square column, and the heat dissipation fins are exposed outside the penetrating pin support plate integrally, so that the heat dissipation fins are placed in an open free convection space, and the heat dissipation effect is greatly improved.
And thirdly, the penetrating heat dissipation structure can be installed on the third layer of needle plate through the heat dissipation module support columns from bottom to top, except that the penetrating square columns are trapped in the needle support plate avoiding through grooves, other parts are arranged below the needle support plate, and the whole penetrating heat dissipation structure is disassembled and assembled without disassembling the needle support plate module, so that the maintenance efficiency of the heat dissipation module is improved, and the loss of the probe service life caused by repeated disassembling and assembling of the needle support plate is avoided.
And fourthly, the interchange compatibility is strong, and because the penetrating heat dissipation structure is small in size, the influence on peripheral components of the chip is greatly reduced, so that the compatibility use among different tested products can be realized, the reuse rate of the heat dissipation module is improved, and the design and production cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a penetrating heat dissipation module according to the present invention;
fig. 2 is an exploded view of the penetrating heat dissipation module according to the present invention;
fig. 3 is a schematic view of a heat dissipation module substrate and a penetrating heat dissipation module according to the present invention;
fig. 4 is a schematic structural view of a pin carrier plate module according to the present invention;
fig. 5 is an exploded view of the needle carrier plate module provided by the present invention;
FIG. 6 is a schematic structural view of a needle plate module;
fig. 7 is an exploded view of a needle plate module provided by the present invention;
fig. 8 shows the operation state of the penetrating heat dissipation module according to the present invention.
The reference numerals are as follows:
1-1: a transmissive heat sink module; 2-1: a needle plate module; 3-1: a carrier plate module; 3-2: a carrier plate floating spring; 1: a turbo fan; 2. a penetrating heat dissipation block; 21: the heat dissipation block is contacted with the boss; 22: a transmissive column; 23: a heat dissipation block guide post; 24: a heat dissipation block heat dissipation fin; 25: installing a threaded hole; 3: a wind scooper; 4. a heat dissipation module substrate; 5: a heat conductive indium sheet; 6. a heat sink floating spring; 7. a heat dissipation module support column; 8: a heat dissipation block equal-height screw; 9. a turbofan fixing screw; 10: a heat dissipation block guide groove; 11. a first layer of needle plates; 12: a second layer of needle plates; 13: a third layer of needle plate; 14: a fourth layer of needle plates; 15: a fifth layer needle plate; 16: a signal transfer board card; 17: the board to be tested is clamped with the chip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model provides a penetrating heat dissipation device for being surveyed the board card chip, include: a transmissive heat sink module 1-1; the penetrating heat dissipation module 1-1 comprises a heat dissipation module substrate 4, a heat dissipation block equal-height screw 8, an air guide cover 3, a turbofan 1, a heat dissipation block floating spring 6 and a penetrating heat dissipation block 2; the air guide cover 3 is arranged on the bottom surface of the heat dissipation module base plate 4 and comprises a through hole, and the turbofan 1 is arranged on the air guide cover 3;
the penetrating type heat dissipation block comprises a penetrating type column 22, a heat dissipation block contact boss 21 is arranged at the lower end of the penetrating type column 22, a heat dissipation block guide column 23 is arranged at the upper end of the penetrating type column 22, a mounting threaded hole 25 is formed in the inner side of the heat dissipation block guide column 23, and a heat dissipation block floating spring 6 is sleeved on the outer side of the heat dissipation block guide column 23; the radiating block guide post 23 of the penetrating radiating block 2 and the radiating block floating spring 6 sleeved on the radiating block guide post 23 penetrate through a through hole of the air guide cover, the radiating block guide groove 10 is further arranged on the radiating module substrate, and the radiating block equal-height screw 8 penetrates through the radiating block guide groove 10 to be connected with the mounting threaded hole screw 25 of the radiating block guide post 23, so that the penetrating radiating block 2 is fixed on the radiating module substrate 4. Wherein, the number of the penetrating columns 22 is 3, the penetrating columns are penetrating square columns, and the heat dissipation block guide grooves 10 are heat dissipation block guide square grooves.
Wherein, the utility model provides a penetrating heat abstractor still includes heat conduction indium piece 5, radiating block contact boss 21 and the 5 adaptations of heat conduction indium piece, 5 covers of heat conduction indium piece are established in the radiating block contact boss 21 outside, and 5 one sides of heat conduction indium piece and the 21 end face contacts of radiating block contact boss, another side and the 17 surface contact of board card chip under test.
As preferred embodiment, the utility model provides a penetrating heat abstractor still includes 4 thermal module support columns 7, 4 the through-hole that thermal module support column 7 passed the four corners department of thermal module base plate is installed on third layer faller 13, wind scooper 3 is located 4 in the space that thermal module support column 7 formed, wind scooper 3 still includes the direction and leads to the groove, turbofan 1 installs in the direction of wind scooper 3 leads to the inslot.
As a preferred embodiment, the utility model provides a penetrating heat abstractor still includes turbofan fixing screw 9, both ends are provided with the screw hole on the turbofan, turbofan fixing screw 9 passes the screw hole and fixes the turbofan on third layer faller 13.
As a preferred embodiment, the present invention provides a penetrating heat dissipation device further comprising a heat dissipation block heat dissipation fin 24, wherein the heat dissipation block heat dissipation fin 24 is connected to the end of the penetrating column 22 by welding, so as to dissipate heat from the penetrating column 22, and the heat dissipation block heat dissipation fin 24 is perpendicular to the penetrating column 22.
As preferred embodiment, the utility model provides an air guide cover 3 still includes the mounting groove for parcel installation radiating block radiating fin 24, the wind current of restriction turbofan 1 concentrates through radiating block radiating fin region.
As shown in fig. 8, the heat dissipation block contact boss 21 passes through the clearance through groove in the pin carrier module to contact the back surface of the card chip 17 to be tested, wherein the cross section of the penetrating square column is equal to the area of the chip.
As shown in fig. 4-5, the needle carrier plate module provided by the present invention comprises a carrier plate module 3-1 and a needle plate module 2-1, wherein the card chip 17 to be tested is installed on the carrier plate module 3-1, the needle plate module 2-1 is installed below the carrier plate module 3-1, and a carrier plate floating spring 3-2 is disposed between the needle plate module 2-1 and the carrier plate module 3-1.
As shown in fig. 6-8, the utility model provides a faller module 2-1 includes first layer faller 11, second floor faller 12, third layer faller 13, fourth layer faller 14, fifth layer faller 15 and signal switching integrated circuit board 16, first layer faller 11, second layer faller 12, third layer faller 13, fourth layer faller 14, fifth layer faller 15 and signal switching integrated circuit board 16 from the top down set gradually, just first layer faller 11, second layer faller 12, third layer faller 13, fourth layer faller 14, fifth layer faller 15 and signal switching integrated circuit board 16 and support plate module 3-1 all are provided with the through-hole, and it forms keeps away a logical groove. The first layer needle board 11 and the second layer needle board 12 are locked on the top surface of the third layer needle board 13 from top to bottom, and the fourth layer needle board 14, the fifth layer needle board 15 and the signal transfer board cards 16 are locked on the bottom surface of the third layer needle board 13 from top to bottom.
Specifically, the penetrating heat dissipation module provided in the present invention is specifically configured as follows;
screw such as radiating block height: after passing through the heat dissipation module substrate, the heat dissipation module substrate is locked with the transmissive heat dissipation block. The function of limiting the movement stroke of the penetrating heat dissipation block is achieved.
Installing a threaded hole:
the penetrating radiating block is installed on the radiating module substrate by utilizing the locking of the radiating block equal-height screw and the radiating block installation threaded hole.
Heat dissipation module base plate: the heat dissipation module support column is used for installing the penetrating heat dissipation block and the heat dissipation module support column, and plays a role in integrally fixing the heat dissipation module.
Turbofan set screw: for fixing the turbofan to the third layer needle plate.
A heat dissipation module support column: the through heat dissipation structure is used for fixing the whole through heat dissipation structure on the third layer of needle plate, and the through heat dissipation structure is all arranged outside the needle carrier plate module. Specifically, one end of the support column of the heat dissipation module is arranged on the base plate of the heat dissipation module, and the other end of the support column of the heat dissipation module is locked on the third layer of the needle plate and used for supporting and fixing the whole heat dissipation module.
Wind scooper: the heat dissipation structure is used for wrapping the fin part of the penetrating heat dissipation block, limiting the wind flow of the turbofan to intensively pass through the fin area, and achieving a good heat dissipation effect; in addition, the air guide cover is provided with a guide through groove of the penetrating heat dissipation block, and the guide through groove is used for guiding the penetrating heat dissipation block to move vertically.
A turbofan: the cooling air source is used for providing a cooling air source for the cooling module and providing cooling airflow power for the cooling of the penetrating cooling block fins.
Heat dissipation block floating spring: the elastic floating movement of the penetrating heat dissipation block relative to the heat dissipation module substrate is realized by limiting the compression stroke of the heat dissipation block by the high screws such as the heat dissipation block, so that the penetrating heat dissipation block is in an elastic pressing state with the back chip of the tested board card, the tested chip is prevented from being damaged by rigid pressing, and the floating prepressing force can better ensure good heat conduction contact.
Radiating block guide post and heat dissipation direction square groove:
the radiating block guide column penetrates through the radiating block guide square groove, and the radiating block guide square groove plays a role in guiding the radiating block guide column, so that the penetrating radiating block keeps vertical motion, and when the penetrating radiating structure is in contact with a chip on the back of a board to be tested, the penetrating radiating structure is vertically stressed, and the contact surface is uniformly attached.
Penetrating square column:
the penetrating square column is a middle-section heat conducting part of the penetrating heat dissipation structure and is used for transferring heat of the heat dissipation block contacting the boss to the heat dissipation fins of the heat dissipation block.
Heat conduction indium sheet and heat dissipation block contact boss
The heat conduction indium sheet is used as a stable heat conduction medium, the heat conduction indium sheet is adhered to the heat dissipation contact boss through a heat conduction double-sided adhesive or in other modes, the heat conduction indium sheet is in good surface contact with the heat dissipation block contact boss through pre-pressing, under the action of vertical elasticity of the heat dissipation floating spring, the heat conduction indium sheet is in surface contact with the back chip of the card of the tested board, and the heat of the back chip of the card of the tested board is conducted to the penetrating square column.
Radiating fins of radiating block:
the radiating block radiating fin is connected with the tail end of the penetrating square column in a welding mode, heat on the penetrating square column is radiated, and the radiating effect is improved due to the fact that the surface area of the radiating block radiating fin structure is large.
Explanation of the working state of the penetrating heat dissipation module:
firstly, in the process of descending the carrier plate, the penetrating square column passes through the avoiding through groove in the pin carrier plate module, and the chip on the back of the tested board card contacts the penetrating heat dissipation block and the heat conduction indium sheet thereof under the action of the floating spring of the heat dissipation block.
Secondly, the heat generated by the chip on the back of the tested board card is transferred to the penetrating square column through the heat conduction indium sheet, and the heat is transferred to the tail end of the penetrating square column through the penetrating square column on the penetrating heat dissipation block, so that the heat is conducted to the heat conduction fin on the tail end of the penetrating square column.
Thirdly, the turbofan generates proper air flow, the heat dissipation air flow directly acts on the fins of the penetrating heat conduction block through the air guide cover to continuously take away heat, and finally the heat dissipation effect is achieved.
Those of ordinary skill in the art will understand that: the above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A penetrating heat dissipation device, comprising: a transmissive heat sink module; the penetrating heat dissipation module comprises a heat dissipation module substrate, a heat dissipation block equal-height screw, an air guide cover, a turbofan, a heat dissipation block floating spring and a penetrating heat dissipation block; the air guide cover is arranged on the bottom surface of the radiating module substrate and comprises a through hole, and the turbofan is arranged on the air guide cover;
the penetrating type radiating block comprises a penetrating type column, a radiating block contact boss is arranged at the lower end of the penetrating type column, a radiating block guide column is arranged at the upper end of the penetrating type column, a mounting threaded hole is formed in the inner side of the radiating block guide column, a radiating block floating spring sleeve is arranged on the outer side of the radiating block guide column and located between the penetrating type radiating block and the radiating module substrate, the radiating block guide column of the penetrating type radiating block penetrates through the through hole of the air guide cover, a radiating block guide groove is further formed in the radiating module substrate, high screws of the radiating block penetrate through the radiating block guide groove and are in threaded connection with the mounting threaded hole of the radiating block guide column, the penetrating type radiating block is fixed on the radiating module substrate, and the cross section of the penetrating type column is equal to the area.
2. The penetrating heat dissipation device of claim 1, further comprising a heat-conducting indium plate, wherein the heat-dissipating block contact boss is adapted to the heat-conducting indium plate, the heat-conducting indium plate is sleeved outside the heat-dissipating block contact boss, and one surface of the heat-conducting indium plate is in contact with the end face of the penetrating heat-dissipating block contact boss and the other surface of the heat-conducting indium plate is in contact with the surface of the tested heat-generating chip.
3. The penetrating heat dissipating device of claim 1, further comprising 4 heat dissipating module supporting pillars, wherein 4 heat dissipating module supporting pillars pass through the through holes at the four corners of the heat dissipating module substrate and are mounted on the pin carrier module, the wind scooper is located in the space formed by the 4 heat dissipating module supporting pillars, the wind scooper further comprises a guiding through groove, and the turbofan is mounted in the guiding through groove of the wind scooper.
4. The penetrating heat dissipating device of claim 1, further comprising a turbofan fixing screw, wherein threaded holes are formed at both ends of the turbofan, and the turbofan fixing screw penetrates the threaded holes to fix the turbofan on the third layer of needle plate.
5. The penetrating heat dissipating device of claim 1, further comprising a slug heat dissipating fin connected to an end of the penetrating post by welding to dissipate heat from the penetrating post, the slug heat dissipating fin being perpendicular to the penetrating post.
6. The penetrating heat dissipating device of claim 5, wherein said air guiding cover further comprises a mounting groove for wrapping and mounting the heat dissipating block fins to limit the wind flow of the turbofan from concentrating on the area of the heat dissipating block fins.
7. The penetrating heat dissipating device of claim 1, wherein the number of the penetrating pillars is 3, the penetrating pillars are penetrating square pillars, and the heat dissipating block guiding grooves are heat dissipating block guiding square grooves.
8. The through heat dissipation device of claim 1, wherein the heat slug contact protrusion passes through the clearance groove in the pin carrier module to contact the back surface of the tested card chip on the pin carrier module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022828208.6U CN213404011U (en) | 2020-11-30 | 2020-11-30 | Penetrating type heat dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022828208.6U CN213404011U (en) | 2020-11-30 | 2020-11-30 | Penetrating type heat dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213404011U true CN213404011U (en) | 2021-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022828208.6U Active CN213404011U (en) | 2020-11-30 | 2020-11-30 | Penetrating type heat dissipation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213404011U (en) |
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2020
- 2020-11-30 CN CN202022828208.6U patent/CN213404011U/en active Active
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Address after: 519125 area a, 29 Xinke 1st Road, Baijiao Science and Technology Industrial Park, Doumen District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Jingshi Measurement and Control Technology Co.,Ltd. Address before: 519125 area a, 29 Xinke 1st Road, Baijiao Science and Technology Industrial Park, Doumen District, Zhuhai City, Guangdong Province Patentee before: P&R. MEASUREMENT Inc. |
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| CP01 | Change in the name or title of a patent holder |