# US 10,455,751 B2 · Maintenance fixture for printed circuit board assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,751 B2 - Document ID: US10455751B2 - Status: Granted - Kind: B2 - Application number: 15/333,549 - Filed: 2016-10-25 - Published: 2017-07-06 - Granted: 2019-10-22 - Earliest claimed: 2016-01-04 - Assignees: Boe Technology Group Co., Ltd.; Hefei Boe Optoelectronics Technology Co., Ltd. - Applicants: Boe Technology Group Co., Ltd.; Hefei Boe Optoelectronics Technology Co., Ltd. - Inventors: Gang Wang; Jianlei Yang; Jie Wang; Chunming Li - Web page: https://patentgrep.com/patent/US10455751B2 ## CPC - H05K 13/0486: {Replacement and removal of components} - H05K 13/0069: {Holders for printed circuit boards} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A maintenance fixture for PCB′A and an operating method thereof are disclosed to mitigate the problems that the PCB′A may be scrapped upon removing a conductive adhesive. The maintenance fixture includes a cover plate and a support baseplate which is configured to support a PCB′A and provided with a stopper unit; the cover plate is movably connected to the support baseplate at a first end to be rotatable towards and away from the support baseplate, and is provided with a barrier layer at a first side which is perpendicular to the rotation direction and close to the support baseplate; the barrier layer is configured to be contacted with the PCB′A upon the cover plate being rotated towards the support baseplate to cover an electronic component zone and expose an electrode zone of the PCB′A. ## Claims ### Claim 1 A maintenance fixture for printed circuit board assembly (PCB′A) comprising a support baseplate and a cover plate, the support baseplate being configured to support a PCB′A to be maintained and being provided with a stopper unit, the stopper unit being configured to limit the PCB′A within a PCB′A stopping area defined by a surface of the support baseplate upon the support baseplate supporting the PCB′A; the cover plate being movably connected to the support baseplate at a first end of the cover plate so as to be rotatable towards and away from the support baseplate with regard to the first end; the cover plate being provided with a barrier layer at a first side of the cover plate, the first side being perpendicular to a rotation direction of the cover plate and close to the support baseplate; the barrier layer being configured in such a manner that, upon the cover plate being rotated towards the support baseplate, the barrier layer being contacted with the PCB′A supported on the support baseplate to cover an electronic component zone of the PCB′A and also expose an electrode zone of the PCB′A at the same time; wherein the stopper unit comprises a plurality of stopping posts disposed in the PCB′A stopping area, and the stopping posts can be inserted into stopping holes provided in the PCB′A respectively, upon the support baseplate supporting the PCB′A. ### Claim 2 (depends on 1) The maintenance fixture according to claim 1, wherein the barrier layer comprises first grooves disposed in one-to-one correspondence with the stopping posts; and each of the stopping posts is inserted into a corresponding first groove upon the cover plate being rotated towards the support baseplate. ### Claim 3 A maintenance fixture for printed circuit board assembly (PCB′A) comprising a support baseplate and a cover plate, the support baseplate being configured to support a PCB′A to be maintained and being provided with a stopper unit, the stopper unit being configured to limit the PCB′A within a PCB′A stopping area defined by a surface of the support baseplate upon the support baseplate supporting the PCB′A; the cover plate being movably connected to the support baseplate at a first end of the cover plate so as to be rotatable towards and away from the support baseplate with regard to the first end; the cover plate being provided with a barrier layer at a first side of the cover plate, the first side being perpendicular to a rotation direction of the cover plate and close to the support baseplate; the barrier layer being configured in such a manner that, upon the cover plate being rotated towards the support baseplate, the barrier layer being contacted with the PCB′A supported on the support baseplate to cover an electronic component zone of the PCB′A and also expose an electrode zone of the PCB′A at the same time; wherein the stopper unit comprises a plurality of stopping blocks disposed at a periphery of the PCB′A stopping area. ### Claim 4 (depends on 3) The maintenance fixture according to claim 3, wherein locations of the plurality of stopping blocks at the support baseplate are adjustable. ### Claim 5 (depends on 3) The maintenance fixture according to claim 3, wherein a surface of the support baseplate comprises two connectors disposed in opposite to each other, the first end of the cover plate is located between the two connectors; and a second side and a third side of the cover plate that are close to the two connectors respectively are provided with a rotation shaft, and each of the connectors is articulated with the cover plate through the rotation shaft. ### Claim 6 (depends on 5) The maintenance fixture according to claim 5, wherein a single rotation shaft is disposed to be passing through both of the second side and the third side so as to be fitted with both of the two connectors, respectively. ### Claim 7 (depends on 5) The maintenance fixture according to claim 5, wherein two rotation shafts are disposed at the second side and the third side, respectively, so as to be fitted with the two connectors, respectively. ### Claim 8 (depends on 5) The maintenance fixture according to claim 5, wherein a side of each of the two connectors that is close to the cover plate is provided with a slideway, and an end of the rotation shaft connected with the connector is slidable along the slideway. ### Claim 9 (depends on 5) The maintenance fixture according to claim 5, wherein a side of each of the second side and the third side of the cover plate that is far away from the corresponding connector is provided with a second groove which is deviated from the corresponding connector upon the cover plate being rotated towards the support baseplate. ### Claim 10 (depends on 3) The maintenance fixture according to claim 3, wherein a material of the barrier layer is silica gel. ### Claim 11 (depends on 3) The maintenance fixture according to claim 3, wherein the support baseplate further comprises a recess extending into the surface of the support baseplate, and the recess is located adjacent to the PCB′A stopping area. ### Claim 12 (depends on 11) The maintenance fixture according to claim 11, further comprising a base configured to support the support baseplate in an inclined manner. ### Claim 13 (depends on 4) The maintenance fixture according to claim 4, wherein the stopper unit comprises a substrate, a slide slot disposed on the substrate, and a stopping block slidably disposed in the slide slot. ### Claim 14 (depends on 3) The maintenance fixture according to claim 3 wherein the first end of the cover plate is articulated with the support baseplate. ### Claim 15 (depends on 3) The maintenance fixture according to claim 3, wherein the barrier layer is disposed at a location on the first side of the cover plate away from the first end. ### Claim 16 A maintenance fixture for printed circuit board assembly (PCB′A) comprising a support baseplate and a cover plate, the support baseplate being configured to support a PCB′A to be maintained and being provided with a stopper unit, the stopper unit being configured to limit the PCB′A within a PCB′A stopping area defined by a surface of the support baseplate upon the support baseplate supporting the PCB′A; the cover plate being movably connected to the support baseplate at a first end of the cover plate so as to be rotatable towards and away from the support baseplate with regard to the first end; the cover plate being provided with a barrier layer at a first side of the cover plate, the first side being perpendicular to a rotation direction of the cover plate and close to the support baseplate; the barrier layer being configured in such a manner that, upon the cover plate being rotated towards the support baseplate, the barrier layer being contacted with the PCB′A supported on the support baseplate to cover an electronic component zone of the PCB′A and also expose an electrode zone of the PCB′A at the same time; wherein the stopper unit comprises a stopping groove disposed in the PCB′A stopping area.