CN115087204A - Anti-fracture rigid-flexible circuit board and processing technology thereof - Google Patents
Anti-fracture rigid-flexible circuit board and processing technology thereof Download PDFInfo
- Publication number
- CN115087204A CN115087204A CN202210737147.3A CN202210737147A CN115087204A CN 115087204 A CN115087204 A CN 115087204A CN 202210737147 A CN202210737147 A CN 202210737147A CN 115087204 A CN115087204 A CN 115087204A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- rigid
- flexible
- clamping
- fracture
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/142—Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/021—Components thermally connected to metal substrates or heat-sinks by insert mounting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
- H05K3/365—Assembling flexible printed circuits with other printed circuits by abutting, i.e. without alloying process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/368—Assembling printed circuits with other printed circuits parallel to each other
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
The invention discloses a fracture-resistant rigid-flexible combined circuit board and a processing technology thereof, and relates to the technical field of circuit boards. This anti cracked soft or hard combination circuit board and processing technology thereof, two hard circuit boards that are "Contraband" shape structure are installed and are constituteed soft or hard combination circuit board in the outside both sides combination of flexible circuit board, and the setting of preventing the fracture group can prevent that excessive buckling and cracked condition from appearing in this soft or hard combination circuit board to link up the frame through the outer and splice the equipment concatenation between the fastening assembly a plurality of soft or hard combination circuit boards of being convenient for, can improve the compactness of equipment between two soft or hard combination circuit boards moreover.
Description
Technical Field
The invention relates to the technical field of circuit boards, in particular to a fracture-resistant rigid-flexible circuit board and a processing technology thereof.
Background
The circuit board can be called as a printed circuit board or a printed circuit board, and is also called as a PCB or an FPC circuit board. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electrical appliance layout. The rigid-flex board is a circuit board with FPC (flexible printed circuit) and PCB (printed circuit board) characteristics, which is formed by combining a flexible circuit board and a rigid circuit board according to relevant process requirements through procedures such as pressing and the like.
The existing soft and hard combined circuit board is easy to bend and break in the using process, and a plurality of soft and hard combined circuit boards are not convenient to be tightly assembled, so that the anti-breaking soft and hard combined circuit board and the processing technology thereof are provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a fracture-resistant rigid-flexible circuit board and a processing technology thereof, and solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a fracture-resistant soft-hard combined circuit board comprises a hard circuit board, a fracture-resistant assembly and a splicing fastening assembly, wherein a flexible circuit board is installed in an inner side groove of the hard circuit board, a film binding layer is fixed between the flexible circuit board and the inner side groove of the hard circuit board, board through holes are formed in two sides between the flexible circuit board and the hard circuit board, filling copper deposition is arranged in the board through holes, the fracture-resistant assembly is installed on the upper sides of the hard circuit board and the flexible circuit board, the fracture-resistant assembly comprises a flexible reinforcing plate, a fixed rubber block, a reinforced rubber block and a connecting spring, the flexible reinforcing plate is bonded with the hard circuit board and the flexible circuit board, the lower side of the middle part of the flexible reinforcing plate is bonded with the fixed rubber block, the reinforced rubber blocks are bonded on the upper side and the lower side of a joint transition part between the hard circuit board and the flexible circuit board, and the outside of strengthening the rubber piece is provided with coupling spring, coupling spring's both ends respectively with rigid circuit board and flexible circuit board fixed connection, rigid circuit board's externally mounted has outer linking frame, and the inside left and right sides of outer linking frame all is fixed with linking frame joint piece, concatenation fastening component installs in one side of linking frame joint piece.
Further, the rigid circuit board is in an Contraband-shaped structure, and two rigid circuit boards are symmetrically arranged about a vertical center line of the flexible circuit board.
Furthermore, a reinforcing steel sheet is fixed below the rigid circuit board, a convex block is fixed at the bottom of the reinforcing steel sheet, and a heat dissipation fin is installed on the lower side of the middle of the flexible circuit board.
Further, be provided with the joint subassembly between flexible circuit board and the rigid circuit board, and the joint subassembly includes first draw-in groove, first fixture block, second draw-in groove and second fixture block, the inner wall of rigid circuit board is provided with first draw-in groove, the both sides outer wall of flexible circuit board is provided with the second draw-in groove, one side that the rigid circuit board is close to the second draw-in groove is fixed with the second fixture block, one side that the flexible circuit board is close to first draw-in groove is fixed with first fixture block.
Furthermore, the flexible reinforcing plate is of an I-shaped structure, and the fixed rubber block on the lower side of the flexible reinforcing plate is of a hemispherical structure.
Furthermore, the outer connecting frame is in an -shaped structure, and one side of the outer part of the outer connecting frame is provided with a caulking groove.
Furthermore, both sides all are fixed with circuit board joint piece around the flexible circuit board, and circuit board joint piece all is "U" shape structure with linking frame joint piece to be the joint between circuit board joint piece and the linking frame joint piece and be connected.
Further, concatenation fastening components includes volute spiral spring, locating piece and flexible protection layer, volute spiral spring and linking frame joint piece fixed connection, and one side of volute spiral spring is fixed with the locating piece, the inboard of locating piece is pasted and is had flexible protection layer.
Furthermore, the positioning block is of an L-shaped structure, an elastic structure is formed between the positioning block and the connecting frame clamping block through a volute spiral spring, and the positioning block is in sliding connection with the inner wall of the outer connecting frame.
Further, the processing technology of the fracture-resistant rigid-flexible circuit board comprises the following specific steps:
step one, cutting and shaping: respectively cutting the substrates of the hard circuit board and the flexible circuit board, arranging circuit parts, and then respectively pressing and molding the layers of the hard circuit board and the flexible circuit board through hot-pressing equipment to obtain the independent hard circuit board and flexible circuit board components;
step two, assembling and processing: installing a flexible circuit board in the inner side grooves of two rigid circuit boards in 'Contraband' shape structures, wherein in the installation process, the rigid circuit board is connected with a second clamping groove of the flexible circuit board in a clamping manner through a second clamping block, the flexible circuit board is connected with a first clamping groove of the rigid circuit board in a clamping manner through a first clamping block, and gaps between the first clamping block and the first clamping groove and between the second clamping block and the rigid circuit board are filled with conductive paste;
step three, forming and processing: plate through holes are formed in the two sides between the flexible circuit board and the rigid circuit board, and copper deposition is filled in the plate through holes, so that circuit conduction is conducted between the rigid circuit board and the flexible circuit board, the reinforcing steel sheet and the protruding block are fixed below the rigid circuit board, the radiating fins are fixed below the middle of the flexible circuit board, and finally the reinforcing rubber block, the connecting spring and the flexible reinforcing plate are fixed in sequence, so that the formed rigid-flexible combined circuit board can be obtained;
step four, connecting and assembling: the rigid circuit board outside at two soft or hard combination circuit boards is established to linking up the frame cover outward that will be "" shape structure, realize linking up the installation of frame outward for the joint between circuit board joint piece and the linking frame joint piece, then the locating piece that is "L" type structure can slide to the four corners department outside of rigid circuit board under volute spiral spring's elastic action, thereby it is spacing to carry out elasticity to two adjacent rigid circuit boards through two sets of locating pieces of linking up the inside both sides of frame outward, make two rigid circuit boards closely laminate, and then improve the compactness of equipment between two soft or hard combination circuit boards.
The invention provides a fracture-resistant rigid-flexible circuit board and a processing technology thereof, and the fracture-resistant rigid-flexible circuit board has the following beneficial effects:
this anti cracked soft or hard combination circuit board and processing technology thereof, two hard circuit boards that are "Contraband" shape structure are installed and are constituteed soft or hard combination circuit board in the outside both sides combination of flexible circuit board, and the setting of preventing the fracture group can prevent that excessive buckling and cracked condition from appearing in this soft or hard combination circuit board to link up the frame through the outer and splice the equipment concatenation between the fastening assembly a plurality of soft or hard combination circuit boards of being convenient for, can improve the compactness of equipment between two soft or hard combination circuit boards moreover.
1. This anti cracked soft or hard combination circuit board and processing technology are provided with rigid circuit board and flexible circuit board, both sides between flexible circuit board and the rigid circuit board are fixed through the film anchor coat, be convenient for increase connection compactness, the inside of board through-hole sets up fills the copper facing and is convenient for carry out the circuit to rigid circuit board and flexible circuit board and switch on, can effectively reduce resistance simultaneously, the setting of reinforcement steel sheet is convenient for strengthen the structural strength of rigid circuit board, the setting of bottom lug can prevent wearing and tearing on the one hand, thereby on the other hand can also make the bottom front and back fretwork of rigid circuit board be convenient for strengthen the radiating effect of rigid circuit board, be convenient for dispel the heat to the flexible circuit board through heat radiation fins.
2. This anti cracked soft or hard combines circuit board and processing technology is provided with the joint subassembly, the rigid circuit board passes through the second fixture block and is connected with the second draw-in groove joint of flexible circuit board, the flexible circuit board is connected with the first draw-in groove joint of rigid circuit board through first fixture block, thereby be convenient for strengthen the compactness of being connected between flexible circuit board and the rigid circuit board, and first fixture block and first draw-in groove, the gap department between second fixture block and the second draw-in groove all fills electrically conductive cream, electrically conductive cream is the electrical contact coating that the electrical property is good, make both switch on each other of reinforcing flexible circuit board and rigid circuit board.
3. This anti cracked soft or hard combines circuit board and processing technology is provided with prevents the subassembly that splits, the flexible reinforcing plate through "worker" font structure is convenient for strengthen the structural strength of flexible circuit board and rigid circuit board, simultaneously the "worker" font non-full coverage formula structure of flexible reinforcing plate can not influence the ventilation cooling of both upsides, the fixed rubber piece that is hemispherical structure can carry out the flexibility to it when flexible circuit board bending deformation and support and press in and promote the flexible circuit board to reset, the setting of reinforced rubber piece can strengthen linking transition department toughness between rigid circuit board and the flexible circuit board, avoid this department wearing and tearing, simultaneously coupling spring's elasticity setting can reset under the elastic action when making flexible circuit board bending deformation, thereby prevent this soft or hard combination circuit board the condition that excessive bending appears and fracture.
4. This anti cracked soft or hard combination circuit board and processing technology are provided with outer linking frame, the outer linking frame that is "" shape structure is convenient for the cover to be established in the hard circuit board outside of two soft or hard combination circuit boards, be convenient for realize the installation of outer linking frame for the joint between circuit board joint piece and the linking frame joint piece, can place the spring in the caulking groove of two adjacent outer linking frame outsides, thereby be convenient for assemble two outer linking frames through the elastic connection of spring, and then be convenient for the equipment concatenation between a plurality of soft or hard combination circuit boards.
5. This anti cracked soft or hard combination circuit board and processing technology are provided with concatenation fastening assembly, the locating piece that is "L" type structure can slide to the four corners department outside of rigid circuit board under volute spiral spring's elastic action, thereby it is spacing to be convenient for carry out elasticity to two adjacent rigid circuit boards through two sets of locating pieces of the inside both sides of outer linking frame, make two rigid circuit boards closely laminate, and then improve the compactness of equipment between two soft or hard combination circuit boards, the inboard flexible protection layer of locating piece can avoid causing the wearing and tearing to rigid circuit board with the outside laminating of rigid circuit board mutually.
Drawings
FIG. 1 is a schematic top view of a rigid circuit board and a flexible circuit board of a fracture-resistant rigid-flexible combined circuit board according to the present invention;
FIG. 2 is a schematic diagram of an overall front view external structure of a rigid-flexible printed circuit board with fracture resistance according to the present invention;
FIG. 3 is a schematic front view of a half-section structure of a rigid circuit board and a flexible circuit board of the anti-fracture rigid-flexible combined circuit board according to the present invention;
FIG. 4 is a schematic top view of a flexible stiffener for a rigid-flex circuit board according to the present invention;
FIG. 5 is an enlarged schematic view of the circuit board with rigid-flexible structure shown in FIG. 3;
FIG. 6 is a schematic diagram of a connection assembly structure of a rigid-flex circuit board with fracture resistance according to the present invention;
FIG. 7 is a side view of the circuit board clamping block and the connecting frame clamping block of the fracture-resistant rigid-flexible printed circuit board of the present invention;
fig. 8 is an enlarged structural diagram of the circuit board with a rigid-flexible structure according to the invention, which is shown in fig. 6B.
In the figure: 1. a rigid circuit board; 2. a flexible circuit board; 3. reinforcing steel sheets; 4. a bump; 5. heat dissipation fins; 6. a film bonding layer; 7. a plate through hole; 8. filling and depositing copper; 9. a clamping assembly; 901. a first card slot; 902. a first clamping block; 903. a second card slot; 904. a second fixture block; 10. an anti-fracture component; 1001. a flexible reinforcing plate; 1002. fixing the rubber block; 1003. reinforcing the rubber block; 1004. a connecting spring; 11. an outer connecting frame; 12. caulking grooves; 13. a circuit board clamping block; 14. a connecting frame clamping block; 15. splicing and fastening components; 1501. a volute spiral spring; 1502. positioning blocks; 1503. a flexible protective layer.
Detailed Description
Referring to fig. 1 to 8, the present invention provides a technical solution: a fracture-resistant rigid-flexible combined circuit board and a processing technology thereof comprise a rigid circuit board 1, a fracture-resistant assembly 10 and a splicing fastening assembly 15, wherein a flexible circuit board 2 is installed in an inner side groove of the rigid circuit board 1, a film bonding layer 6 is fixed between the flexible circuit board 2 and the inner side groove of the rigid circuit board 1, board through holes 7 are formed in two sides between the flexible circuit board 2 and the rigid circuit board 1, filling copper deposition 8 is arranged in the board through holes 7, the fracture-resistant assembly 10 is installed on the upper sides of the rigid circuit board 1 and the flexible circuit board 2, the fracture-resistant assembly 10 comprises a flexible reinforcing plate 1001, a fixed rubber block 1002, a reinforced rubber block 1003 and a connecting spring 1004, the flexible reinforcing plate 1001 is bonded with the rigid circuit board 1 and the flexible circuit board 2, the lower side of the middle of the flexible reinforcing plate 1001 is bonded with the fixed rubber block 1002, the reinforced rubber blocks 1003 are bonded on the upper side and the lower side of a joint transition position between the rigid circuit board 1 and the flexible circuit board 2, and the outside of the reinforced rubber block 1003 is provided with a connecting spring 1004, two ends of the connecting spring 1004 are respectively fixedly connected with the rigid circuit board 1 and the flexible circuit board 2, the outer part of the rigid circuit board 1 is provided with an outer connecting frame 11, the left side and the right side of the inner part of the outer connecting frame 11 are both fixed with connecting frame clamping blocks 14, and the splicing fastening assembly 15 is installed on one side of the connecting frame clamping blocks 14.
Referring to fig. 1-3, the rigid circuit board 1 is in the shape of "Contraband", and two rigid circuit boards 1 are symmetrically disposed about the vertical center line of the flexible circuit board 2;
two hard circuit boards 1 that are "Contraband" shape structure are installed and are constituteed soft or hard combination circuit board in the outside both sides combination of flexible circuit board 2, and both sides between flexible circuit board 2 and the hard circuit board 1 are fixed through film anchor coat 6, are convenient for increase connection compactness, and the inside of board through-hole 7 sets up fills heavy copper 8 and is convenient for carry out the circuit to hard circuit board 1 and flexible circuit board 2 and switch on, can effectively reduce resistance simultaneously.
Referring to fig. 2, a reinforcing steel sheet 3 is fixed below the rigid circuit board 1, a bump 4 is fixed at the bottom of the reinforcing steel sheet 3, and a heat dissipation fin 5 is installed at the lower side of the middle part of the flexible circuit board 2;
the concrete operation is as follows, the setting of reinforcement steel sheet 3 is convenient for strengthen the structural strength of rigid circuit board 1, and the setting of bottom lug 4 can prevent wearing and tearing on the one hand, thereby on the other hand can also make the bottom front and back fretwork of rigid circuit board 1 be convenient for strengthen the radiating effect of rigid circuit board 1, is convenient for dispel the heat to flexible circuit board 2 through heat radiation fin 5.
Referring to fig. 3, a clamping assembly 9 is disposed between the flexible circuit board 2 and the rigid circuit board 1, the clamping assembly 9 includes a first clamping groove 901, a first clamping block 902, a second clamping groove 903 and a second clamping block 904, the inner wall of the rigid circuit board 1 is provided with the first clamping groove 901, the outer walls of two sides of the flexible circuit board 2 are provided with the second clamping groove 903, one side of the rigid circuit board 1 close to the second clamping groove 903 is fixed with the second clamping block 904, and one side of the flexible circuit board 2 close to the first clamping groove 901 is fixed with the first clamping block 902;
the operation is as follows, the rigid circuit board 1 is connected with the second clamping groove 903 of the flexible circuit board 2 through the second clamping block 904 in a clamping manner, the flexible circuit board 2 is connected with the first clamping groove 901 of the rigid circuit board 1 through the first clamping block 902 in a clamping manner, so that the tightness of connection between the flexible circuit board 2 and the rigid circuit board 1 is enhanced, and the gaps between the first clamping block 902 and the first clamping groove 901, and between the second clamping block 904 and the second clamping groove 903 are filled with conductive paste which is an electric contact coating with good electrical property, so that the reinforced flexible circuit board 2 and the rigid circuit board 1 are mutually conducted.
Referring to fig. 2 and fig. 4-5, the flexible stiffener 1001 is in an i-shaped configuration, and the fixed rubber block 1002 on the lower side of the flexible stiffener 1001 is in a hemispherical configuration;
flexible reinforcing plate 1001 through "worker" font structure is convenient for strengthen the structural strength of flexible circuit board 2 and rigid circuit board 1, the while "worker" font non-full coverage formula structure of flexible reinforcing plate 1001 can not influence the ventilation cooling of both upsides, the fixed rubber block 1002 that is hemispherical structure can carry out the flexibility to it when flexible circuit board 2 bending deformation and support and press in and promote flexible circuit board 2 to reset, the setting of reinforced rubber block 1003 can strengthen rigid circuit board 1 and flexible circuit board 2 between linking transition department toughness, avoid this wearing and tearing, simultaneously connecting spring 1004's elasticity sets up and can reset under the elastic action when making flexible circuit board 2 bending deformation, thereby prevent that excessive bending from appearing and the cracked condition in this soft or hard combination circuit board.
Referring to fig. 6-7, the outer connecting frame 11 is shaped like "", and a caulking groove 12 is formed on one side of the outer portion of the outer connecting frame 11; the front side and the rear side of the flexible circuit board 2 are both fixed with circuit board clamping blocks 13, the circuit board clamping blocks 13 and the connecting frame clamping blocks 14 are both in U-shaped structures, and the circuit board clamping blocks 13 and the connecting frame clamping blocks 14 are in clamping connection;
the concrete operation is as follows, the outer linking frame 11 that is "" shape structure is convenient for the cover to be established in the rigid circuit board 1 outside of two soft or hard combination circuit boards, be convenient for realize the installation of linking frame 11 outward for the joint between circuit board joint piece 13 and linking frame joint piece 14, can place the spring in the caulking groove 12 of two adjacent outer linking frame 11 outsides to be convenient for link up two outer linking frames 11 with two through the elastic connection of spring and assemble, and then be convenient for the equipment concatenation between a plurality of soft or hard combination circuit boards.
Referring to fig. 6 and 8, the splicing fastening assembly 15 includes a spiral spring 1501, a positioning block 1502 and a flexible protection layer 1503, the spiral spring 1501 is fixedly connected to the linking frame clamping block 14, the positioning block 1502 is fixed to one side of the spiral spring 1501, and the flexible protection layer 1503 is adhered to the inner side of the positioning block 1502; the positioning block 1502 is in an L-shaped structure, an elastic structure is formed between the positioning block 1502 and the connecting frame clamping block 14 through the volute spiral spring 1501, and the positioning block 1502 is in sliding connection with the inner wall of the outer connecting frame 11;
the specific operation is as follows, the positioning blocks 1502 with the L-shaped structures can slide to the outer sides of the four corners of the rigid circuit board 1 under the elastic action of the volute spiral spring 1501, so that two adjacent rigid circuit boards 1 can be elastically limited by the two groups of positioning blocks 1502 on the two inner sides of the outer connecting frame 11, the two rigid circuit boards 1 are tightly attached to each other, the tightness of assembly between two soft and hard combined circuit boards is improved, and the flexible protective layer 1503 on the inner side of the positioning blocks 1502 can be attached to the outer portion of the rigid circuit board 1 to avoid abrasion of the rigid circuit board 1.
The processing technology of the fracture-resistant rigid-flexible circuit board comprises the following specific steps:
step one, cutting and shaping: respectively cutting the substrates of the hard circuit board 1 and the flexible circuit board 2, arranging circuit parts, and then respectively pressing and forming the layers of the hard circuit board 1 and the flexible circuit board 2 by hot-pressing equipment to obtain the independent components of the hard circuit board 1 and the flexible circuit board 2;
step two, assembling and processing: the flexible circuit board 2 is installed in the inner side grooves of the two rigid circuit boards 1 in the Contraband-shaped structures, in the installation process, the rigid circuit boards 1 are connected with the second clamping grooves 903 of the flexible circuit boards 2 in a clamping mode through the second clamping blocks 904, the flexible circuit boards 2 are connected with the first clamping grooves 901 of the rigid circuit boards 1 in a clamping mode through the first clamping blocks 902, conducting paste is filled in gaps between the first clamping blocks 902 and the first clamping grooves 901 as well as between the second clamping blocks 904 and the second clamping grooves 903, finally, the connecting positions of the rigid circuit boards 1 and the flexible circuit boards 2 are vacuumized, and the rigid circuit boards 1 and the flexible circuit boards 2 are connected more tightly in a vacuum adsorption mode;
step three, forming and processing: plate through holes 7 are formed in two sides between the flexible circuit board 2 and the rigid circuit board 1, and copper deposition 8 is filled in the plate through holes, so that circuit conduction is conducted between the rigid circuit board 1 and the flexible circuit board 2, a reinforcing steel sheet 3 and a convex block 4 are fixed below the rigid circuit board 1, a heat dissipation fin 5 is fixed below the middle of the flexible circuit board 2, and finally a reinforcing rubber block 1003, a connecting spring 1004 and a flexible reinforcing plate 1001 are fixed in sequence, so that the formed rigid-flexible combined circuit board can be obtained;
step four, connecting and assembling: the outer joint frame 11 that will be "" shape structure is established in the rigid circuit board 1 outside of two soft or hard combination circuit boards, realize the installation of outer joint frame 11 for the joint between circuit board joint piece 13 and the joint frame joint piece 14, then the locating piece 1502 that is "L" type structure can slide to the four corners department outside of rigid circuit board 1 under the elastic action of spiral spring 1501, thereby it is spacing to carry out the elasticity to two adjacent rigid circuit boards 1 through two sets of locating pieces 1502 of the inside both sides of outer joint frame 11, make two rigid circuit boards 1 closely laminate, and then improve the compactness of equipment between two soft or hard combination circuit boards.
In summary, when the rigid-flex circuit board and the manufacturing process thereof are used, the flexible circuit board 2 is firstly installed in the inner side grooves of the two rigid circuit boards 1 in the Contraband-shaped structure, and during the installation process, so that the rigid circuit board 1 is connected with the second locking groove 903 of the flexible circuit board 2 through the second locking block 904 in a locking manner, the flexible circuit board 2 is connected with the first locking groove 901 of the rigid circuit board 1 through the first locking block 902 in a locking manner, therefore, the connection tightness between the flexible circuit board 2 and the rigid circuit board 1 is enhanced, and the gaps between the first fixture block 902 and the first clamping groove 901, and between the second fixture block 904 and the second clamping groove 903 are filled with conductive paste, the conductive paste is an electrical contact coating with good electrical property, so that the flexible circuit board 2 and the rigid circuit board 1 are enhanced to be mutually conducted, meanwhile, two sides between the flexible circuit board 2 and the rigid circuit board 1 are fixed through a film bonding layer 6;
then, plate through holes 7 are formed in the two sides between the flexible circuit board 2 and the rigid circuit board 1, and the filler copper deposition 8 is arranged, so that the rigid circuit board 1 and the flexible circuit board 2 are conducted, meanwhile, the resistance can be effectively reduced, in the using process, the structural strength of the rigid circuit board 1 can be enhanced due to the arrangement of the reinforcing steel sheet 3, on one hand, abrasion can be prevented due to the arrangement of the bottom bumps 4, on the other hand, the bottom of the rigid circuit board 1 can be hollowed back and forth, so that the heat dissipation effect of the rigid circuit board 1 is enhanced, and the flexible circuit board 2 can be dissipated through the heat dissipation fins 5;
when the flexible printed circuit board is used, the flexible reinforcing plate 1001 with the I-shaped structure can reinforce the structural strength of the flexible printed circuit board 2 and the rigid printed circuit board 1, meanwhile, the I-shaped non-full-coverage structure of the flexible reinforcing plate 1001 cannot influence ventilation and heat dissipation on the upper sides of the flexible printed circuit board 2 and the rigid printed circuit board 1, the fixed rubber block 1002 with the hemispherical structure can flexibly press the flexible printed circuit board 2 to promote the flexible printed circuit board 2 to reset when the flexible printed circuit board 2 is bent and deformed, the toughness of the joint transition position between the rigid printed circuit board 1 and the flexible printed circuit board 2 can be enhanced through the arrangement of the reinforcing rubber block 1003, abrasion of the joint transition position can be avoided, and meanwhile, the flexible arrangement of the connecting spring 1004 enables the flexible printed circuit board 2 to reset under the elastic action when the flexible printed circuit board is bent and deformed, so that the soft and hard combined circuit board is prevented from being excessively bent and broken;
when a plurality of rigid-flexible printed circuit boards need to be assembled, the outer connecting frame 11 in the shape of can be sleeved outside the rigid printed circuit boards 1 of two rigid-flexible printed circuit boards, the outer connecting frame 11 can be installed by clamping between the circuit board clamping block 13 and the connecting frame clamping block 14, springs can be placed in the embedded grooves 12 outside two adjacent outer connecting frames 11, so that the two outer connecting frames 11 can be assembled through the elastic connection of the springs, the assembly and splicing among the plurality of rigid-flexible printed circuit boards are convenient, then the positioning block 1502 in the shape of L can slide to the outer sides of four corners of the rigid printed circuit boards 1 under the elastic action of the volute spiral spring 1501, so that the two adjacent rigid printed circuit boards 1 can be elastically limited through the two sets of positioning blocks 1502 on the two sides inside the outer connecting frame 11, so that the two rigid printed circuit boards 1 are tightly attached, and the tightness of assembly between the two rigid-flexible circuit boards is further improved, wherein the flexible protective layer 1503 on the inner side of the positioning block 1502 can be attached to the outer part of the rigid circuit board 1 to avoid abrasion to the rigid circuit board 1, so that the whole fracture-resistant rigid-flexible circuit board and the use process of the processing technology thereof are completed.
Claims (10)
1. The anti-fracture rigid-flexible combined circuit board is characterized by comprising a rigid circuit board (1), an anti-fracture assembly (10) and a splicing fastening assembly (15), wherein a flexible circuit board (2) is installed in an inner side groove of the rigid circuit board (1), a film bonding layer (6) is fixed between the flexible circuit board (2) and the inner side groove of the rigid circuit board (1), board through holes (7) are formed in two sides between the flexible circuit board (2) and the rigid circuit board (1), filling copper deposition (8) is arranged in the board through holes (7), the anti-fracture assembly (10) is installed on the upper sides of the rigid circuit board (1) and the flexible circuit board (2), the anti-fracture assembly (10) comprises a flexible reinforcing plate (1001), a fixed rubber block (1002), a reinforced rubber block (1003) and a connecting spring (1004), and the flexible reinforcing plate (1001) is bonded with the rigid circuit board (1) and the flexible circuit board (2), and the middle part downside of flexible reinforcing plate (1001) is glued and is had fixed rubber piece (1002), both sides all are glued and are had reinforced rubber piece (1003) about the linking transition department between rigid circuit board (1) and flexible circuit board (2), and the outside of reinforced rubber piece (1003) is provided with coupling spring (1004), the both ends of coupling spring (1004) respectively with rigid circuit board (1) and flexible circuit board (2) fixed connection, the externally mounted of rigid circuit board (1) has outer joint frame (11), and the inside left and right sides of outer joint frame (11) all is fixed with joint frame joint piece (14), one side in joint frame joint piece (14) is installed in concatenation fastening component (15).
2. The rigid-flex circuit board with fracture resistance according to claim 1, wherein the rigid circuit board (1) is in an Contraband shape structure, and two rigid circuit boards (1) are symmetrically arranged about the vertical center line of the flexible circuit board (2).
3. The rigid-flex circuit board with fracture resistance according to claim 1, wherein a reinforcing steel sheet (3) is fixed below the rigid circuit board (1), a bump (4) is fixed at the bottom of the reinforcing steel sheet (3), and a heat dissipation fin (5) is installed at the lower side of the middle part of the flexible circuit board (2).
4. The fracture-resistant rigid-flexible printed circuit board according to claim 1, wherein a clamping assembly (9) is arranged between the flexible printed circuit board (2) and the rigid printed circuit board (1), the clamping assembly (9) comprises a first clamping groove (901), a first clamping block (902), a second clamping groove (903) and a second clamping block (904), the first clamping groove (901) is arranged on the inner wall of the rigid printed circuit board (1), the second clamping groove (903) is arranged on the outer walls of two sides of the flexible printed circuit board (2), the second clamping block (904) is fixed on one side of the rigid printed circuit board (1) close to the second clamping groove (903), and the first clamping block (902) is fixed on one side of the flexible printed circuit board (2) close to the first clamping groove (901).
5. The rigid-flex circuit board of claim 1, wherein the flexible stiffener (1001) is of an I-shaped structure, and the fixed rubber block (1002) on the lower side of the flexible stiffener (1001) is of a hemispherical structure.
6. The rigid-flexible printed circuit board of claim 1, wherein the outer connecting frame (11) is shaped like , and a caulking groove (12) is formed on one side of the outer portion of the outer connecting frame (11).
7. The fracture-resistant rigid-flexible printed circuit board as claimed in claim 1, wherein the flexible printed circuit board (2) is fixed with circuit board clamping blocks (13) at the front and back sides, the circuit board clamping blocks (13) and the connecting frame clamping blocks (14) are both in a U-shaped structure, and the circuit board clamping blocks (13) and the connecting frame clamping blocks (14) are in clamping connection.
8. The fracture-resistant rigid-flexible printed circuit board of claim 1, wherein the splice fastening assembly (15) comprises a spiral spring (1501), a positioning block (1502) and a flexible protection layer (1503), the spiral spring (1501) is fixedly connected with the joint frame clamping block (14), the positioning block (1502) is fixed on one side of the spiral spring (1501), and the flexible protection layer (1503) is adhered to the inner side of the positioning block (1502).
9. The rigid-flexible printed circuit board of claim 8, wherein the positioning block (1502) is of an "L" shape, the positioning block (1502) forms an elastic structure with the engaging frame clamping block (14) through the spiral spring (1501), and the positioning block (1502) is slidably connected with the inner wall of the outer engaging frame (11).
10. The processing technology of the fracture-resistant rigid-flexible printed circuit board according to any one of claims 1 to 9, wherein the processing technology of the fracture-resistant rigid-flexible printed circuit board comprises the following specific steps:
step one, cutting and shaping: respectively cutting the substrates of the hard circuit board (1) and the flexible circuit board (2), setting circuit parts, and then respectively pressing and molding the layers of the hard circuit board (1) and the flexible circuit board (2) through hot-pressing equipment to obtain the independent hard circuit board (1) and flexible circuit board (2) components;
step two, assembling and processing: the flexible circuit board (2) is installed in the inner side grooves of the two rigid circuit boards (1) in the Contraband-shaped structures, in the installation process, the rigid circuit boards (1) are connected with the second clamping grooves (903) of the flexible circuit boards (2) in a clamping mode through the second clamping blocks (904), the flexible circuit boards (2) are connected with the first clamping grooves (901) of the rigid circuit boards (1) in a clamping mode through the first clamping blocks (902), gaps among the first clamping blocks (902), the first clamping grooves (901), the second clamping blocks (904) and the second clamping grooves (903) are filled with conductive paste, finally, the joints of the rigid circuit boards (1) and the flexible circuit boards (2) are vacuumized, and the rigid circuit boards and the flexible circuit boards are connected more tightly in a vacuum adsorption mode;
step three, forming and processing: plate through holes (7) are formed in two sides between the flexible circuit board (2) and the rigid circuit board (1) and filled with copper deposition (8), so that the rigid circuit board (1) and the flexible circuit board (2) are conducted, a reinforcing steel sheet (3) and a bump (4) are fixed below the rigid circuit board (1), a heat dissipation fin (5) is fixed below the middle of the flexible circuit board (2), and finally a reinforcing rubber block (1003), a connecting spring (1004) and a flexible reinforcing plate (1001) are fixed in sequence, so that the formed rigid-flexible combined circuit board can be obtained;
step four, connecting and assembling: the outer connecting frame (11) which is in an '' shape structure is sleeved on the outer sides of the rigid circuit boards (1) of the two soft and hard combined circuit boards, the outer connecting frame (11) is installed by clamping between the circuit board clamping block (13) and the connecting frame clamping block (14), then the positioning block (1502) which is in an 'L' shape structure can slide to the outer sides of the four corners of the rigid circuit boards (1) under the elastic action of the volute spiral spring (1501), and therefore the two adjacent rigid circuit boards (1) are elastically limited by the two groups of positioning blocks (1502) on the two inner sides of the outer connecting frame (11), the two rigid circuit boards (1) are tightly attached, and the assembling tightness between the two soft and hard combined circuit boards is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737147.3A CN115087204A (en) | 2022-06-27 | 2022-06-27 | Anti-fracture rigid-flexible circuit board and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737147.3A CN115087204A (en) | 2022-06-27 | 2022-06-27 | Anti-fracture rigid-flexible circuit board and processing technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115087204A true CN115087204A (en) | 2022-09-20 |
Family
ID=83256028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210737147.3A Pending CN115087204A (en) | 2022-06-27 | 2022-06-27 | Anti-fracture rigid-flexible circuit board and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115087204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115988735A (en) * | 2023-03-09 | 2023-04-18 | 荣耀终端有限公司 | Circuit board and processing method thereof, battery protection board, battery and electronic equipment |
-
2022
- 2022-06-27 CN CN202210737147.3A patent/CN115087204A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115988735A (en) * | 2023-03-09 | 2023-04-18 | 荣耀终端有限公司 | Circuit board and processing method thereof, battery protection board, battery and electronic equipment |
| CN115988735B (en) * | 2023-03-09 | 2023-08-22 | 荣耀终端有限公司 | Circuit board and processing method thereof, battery protection board, battery and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101551264B1 (en) | A connector and electrical tracks assembly | |
| CN105847651B (en) | CCD camera assembly and mobile terminal | |
| US20120276772A1 (en) | Flat cable and connection structure between flat cable and printed wiring board | |
| US5136123A (en) | Multilayer circuit board | |
| JPH05243693A (en) | Printed circuit having break resistance and printed circuit board and compact personal computer having the same printed circuit board | |
| CN115087204A (en) | Anti-fracture rigid-flexible circuit board and processing technology thereof | |
| CN101681907A (en) | Heat dissipating structure base board, module using heat dissipating structure base board, and method for manufacturing heat dissipating structure base board | |
| CN101330172A (en) | High speed high-density connector with modular structure for back board | |
| CN109688691B (en) | Flexible circuit board, optical transceiver module and optical module | |
| JP5166976B2 (en) | Flexible circuit board and manufacturing method thereof | |
| CN206004994U (en) | Side switch flexible PCB and electronic equipment | |
| KR20120064125A (en) | Wiring board and method for producing same | |
| CN105519248A (en) | Heat radiating shielding structure and communication product | |
| CN114422681B (en) | Driving mechanism, driving mechanism combination, camera module and electronic equipment | |
| WO2019119768A1 (en) | Circuit board, and manufacturing method thereof | |
| CN216491210U (en) | Rigid-flex circuit board with electromagnetic shielding film | |
| CN112492744B (en) | Adjustable 5G of structure strenghthened type circuit board for communication | |
| US8668500B2 (en) | Connection terminal, method for manufacturing connection terminal, and socket including connection terminal | |
| US20070212914A1 (en) | Discrete electronic component and related assembling method | |
| CN210328149U (en) | Multilayer printed circuit board | |
| CN208971857U (en) | A kind of anti-bending rigid-flex circuit board | |
| JP2014096260A (en) | Flat wiring material and mounting body using it | |
| US10451810B1 (en) | Adapter for electrically connecting a laser diode to a circuit board | |
| JP2021072178A (en) | socket | |
| CN117395860A (en) | Flexible circuit board based on local reinforcement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |