CN216700423U - Flexible printed circuit board - Google Patents
Flexible printed circuit board Download PDFInfo
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- CN216700423U CN216700423U CN202122427134.XU CN202122427134U CN216700423U CN 216700423 U CN216700423 U CN 216700423U CN 202122427134 U CN202122427134 U CN 202122427134U CN 216700423 U CN216700423 U CN 216700423U
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- flexible
- sheet
- printed circuit
- circuit board
- flexible printed
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Abstract
The utility model discloses a flexible printed circuit board, which comprises a flexible sheet, wherein the flexible sheet comprises at least three layers of flexible single sheets, the flexible single sheets comprise at least two wide sheet parts arranged at intervals, a narrow sheet part is arranged between the two wide sheet parts, the middle parts of the wide sheet parts are provided with a plurality of contact piece insertion holes A, and two side surfaces of the flexible sheet and the positions of the wide sheet parts are provided with substrates; the middle part of the substrate is provided with a plurality of contact piece jacks B, and the contact piece jacks A are matched with the contact piece jacks B. The utility model provides a flexible printed circuit board, which can greatly reduce the assembly space and improve the signal reliability by transmitting signals through the flexible printed board.
Description
Technical Field
The utility model relates to the technical field of printed circuit boards, in particular to a flexible printed circuit board.
Background
The signal interconnection and cable-free connection between flexible board components and inside a case is popularized among intelligent electronic products, and the technology is more and more applied in the field of military industry. The flexible board components are stacked through the connector or the flexible printed board, so that the installation space can be greatly saved; the flexible plate assembly is convenient to install, and the production efficiency is greatly improved.
The printed conductors are complex to weld, the wiring harness treatment is complex for the interconnection of connectors with large core number, and the traditional wiring harness treatment method adopts a wave-proof sleeve and a nylon wire sleeve to wind or uses a high-temperature adhesive tape to wind. The disadvantages of this approach are poor crosstalk and shielding characteristics between signals, heavy weight of wires and accessories, difficulty in disassembly and replacement.
SUMMERY OF THE UTILITY MODEL
Based on the technical problems in the background art, the utility model provides a flexible printed circuit board, which can greatly reduce the assembly space and improve the signal reliability by transmitting signals through the flexible printed circuit board.
A flexible printed circuit board comprises a flexible sheet, wherein the flexible sheet comprises at least three layers of flexible single sheets, the flexible single sheets comprise at least two wide sheet parts arranged at intervals, a narrow sheet part is arranged between the two wide sheet parts, a plurality of contact piece insertion holes A are formed in the middle parts of the wide sheet parts, and substrates are arranged on two side surfaces of the flexible sheet and in the positions of the wide sheet parts; the middle part of the substrate is provided with a plurality of contact piece jacks B, and the contact piece jacks A are matched with the contact piece jacks B.
Preferably, the flexible single sheet comprises two flexible substrates, a metal mesh is arranged between the two flexible substrates, and the thickness of the flexible single sheet is 0.4-0.6 mm.
Preferably, the flexible substrate is made of epoxy resin, and the metal mesh is made of copper.
Preferably, the substrate is made of polyphenylene oxide, polyimide or polytetrafluoroethylene.
Preferably, still be equipped with fixed orifices A on the wide slice portion, still be equipped with fixed orifices B on the base plate, fixed orifices A and fixed orifices B phase-match.
Preferably, when the two wide sheet portions are disposed at both ends of the flexible single sheet, a substrate sleeve is disposed on each of the two wide sheet portions.
Preferably, the wide sheet portion has a width larger than that of the narrow sheet portion.
The utility model has the following beneficial effects:
the utility model provides a flexible printed circuit board, which comprises a flexible sheet, wherein the flexible sheet comprises at least three layers of flexible single sheets, the flexible single sheets comprise at least two wide sheet parts arranged at intervals, a narrow sheet part is arranged between the two wide sheet parts, the middle parts of the wide sheet parts are provided with a plurality of contact piece insertion holes A, and two side surfaces of the flexible sheet and the positions of the wide sheet parts are provided with substrates; the middle part of the base plate is provided with a plurality of contact piece jacks B, and the contact piece jack A is matched with the contact piece jack B.
The utility model provides the flexible printed circuit board, signals are transmitted through the flexible printed circuit board, the assembly space can be greatly reduced, the overall weight of a product is reduced, and the signal reliability is improved; the flexible printed circuit board is adopted to replace cables, so that the risks of wrong welding and insufficient welding caused by welding the cables can be effectively reduced; in addition, the flexible printed circuit board can select the length of the flexible sheet and the number of the installation connectors according to actual conditions, and the application scene is wider.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
fig. 1 is a schematic structural diagram of a flexible printed circuit board according to the present invention;
fig. 2 is a cross-sectional view of a flexible printed circuit board according to the present invention;
FIG. 3 is a schematic structural view of a flexible monolithic sheet;
FIG. 4 is a cross-sectional view of a flexible monolith;
FIG. 5 is a schematic view of a substrate;
fig. 6 is a schematic structural view of a flexible printed circuit board in embodiment 2;
fig. 7 is a schematic structural view of a flexible printed circuit board in embodiment 3;
fig. 8 is a sectional view of a flexible printed circuit board in embodiment 3;
fig. 9 is a schematic view of the assembly of the connector and the flexible printed circuit board.
In the figure: 1-flexible sheet, 11-flexible single sheet, 111-wide sheet, 112-narrow sheet, 113-contact hole A, 114-fixing hole A, 1101-flexible substrate, 1102-metal mesh, 2-substrate, 21-contact hole B, 22-fixing hole B, 3-connector, 31-contact, 4-substrate sleeve.
Detailed Description
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be further illustrated with reference to the following specific examples.
Example 1
Referring to fig. 1-5, a flexible printed circuit board includes a flexible sheet 1, the flexible sheet 1 includes three layers of flexible single sheets 11, two ends of each flexible single sheet 11 are respectively provided with wide sheet parts 111, and a narrow sheet part 112 is arranged between the two wide sheet parts 111; the wide piece portion 111 has a width larger than that of the narrow piece portion 112.
The middle part of the wide part 111 is provided with a plurality of contact piece insertion holes A113, and the two side surfaces of the flexible sheet 1 and the position of the wide part 111 are provided with the substrate 2; the shape of the substrate 2 is matched with the shape of the wide portion 111.
The middle portion of the base plate 2 is provided with a plurality of contact insertion holes B21, and the contact insertion holes a113 and B21 are matched. The wide portion 111 is further provided with a fixing hole a 114, the substrate 2 is further provided with a fixing hole B22, and the fixing hole a 114 is matched with the fixing hole B22.
The flexible single sheet 11 comprises two flexible substrates 1101, a metal mesh 1102 is arranged between the two flexible substrates 1101, and the thickness of the flexible single sheet 11 is 0.4 mm; the flexible substrate 1101 is made of epoxy resin, and the metal mesh 1102 is made of copper; the material of the substrate 2 is polyphenylene oxide.
Example 2
Referring to fig. 6, in the flexible printed circuit board in this embodiment, three wide sheet portions 111 are provided at intervals on the flexible single sheet 11, and a narrow sheet portion 112 is provided between each two wide sheet portions 111; the thickness of the flexible single sheet 11 is 0.6 mm; the substrate 2 is made of polyimide; the other structure is the same as embodiment 1. The flexible printed circuit board has three wide sheet portions 111, and thus three connectors 3 can be connected.
Example 3
Referring to fig. 7 and 8, in the flexible printed circuit board of the present embodiment, two wide sheet portions 111 are disposed at two ends of the flexible single sheet 11, and the substrate cover 4 is disposed on each of the two wide sheet portions 111; the wide sheet part 111 of the flexible sheet 1 is wrapped by the substrate sleeve 4, so that a better signal shielding effect is achieved. The thickness of the flexible single sheet 11 is 0.5 mm; the substrate 2 is made of polytetrafluoroethylene; the other structure is the same as embodiment 1.
The working principle is as follows:
referring to fig. 9, in the flexible printed circuit board of embodiment 1, in use, the contact 31 of the connector 3 is inserted into the contact insertion hole a113 and the contact insertion hole B21, and the connector 3 and the flexible printed circuit board are fixedly connected by screwing through the fixing hole a 114 and the fixing hole B22, at which time the contact 31 and the metal mesh 1102 of the flexible single sheet 11 form an electrical signal path; the area where the substrate 2 is arranged is a rigid area of the printed circuit board, so that stable connection between the flexible printed circuit board and the connector 3 is ensured; the wide sheet portions 111 of the three flexible single sheets 11 constituting the flexible sheet 1 and the substrate 2 are fixed together without bonding together each flexible single sheet 11, so that the flexible sheet 1 has better flexibility; the narrow portion 112 of the flexible sheet 1 can be bent to achieve a flexible connection between the connectors.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. A flexible printed circuit board comprises a flexible sheet (1), and is characterized in that the flexible sheet (1) comprises at least three layers of flexible single sheets (11), the flexible single sheets (11) comprise at least two wide sheet parts (111) arranged at intervals, a narrow sheet part (112) is arranged between the two wide sheet parts (111), a plurality of contact piece insertion holes A (113) are formed in the middle part of each wide sheet part (111), and substrates (2) are arranged on the two side surfaces of the flexible sheet (1) and at the positions of the wide sheet parts (111); the middle part of the base plate (2) is provided with a plurality of contact piece insertion holes B (21), and the contact piece insertion holes A (113) are matched with the contact piece insertion holes B (21).
2. A flexible printed circuit board according to claim 1, characterized in that the flexible single sheet (11) comprises two flexible substrates (1101), a metal mesh (1102) is arranged between the two flexible substrates (1101), and the thickness of the flexible single sheet (11) is 0.4-0.6 mm.
3. A flexible printed circuit board according to claim 2, wherein the flexible substrate (1101) is made of epoxy resin, and the metal mesh (1102) is made of copper.
4. A flexible printed circuit board according to claim 3, characterized in that the substrate (2) is made of polyphenylene oxide, polyimide or teflon.
5. The flexible printed circuit board according to claim 4, wherein the wide plate portion (111) further has a fixing hole A (114), and the substrate (2) further has a fixing hole B (22), and the fixing hole A (114) and the fixing hole B (22) are matched.
6. A flexible printed circuit board according to claim 1, wherein when two wide sheet portions (111) are provided at both ends of the flexible single sheet (11), a substrate case (4) is provided on each of the two wide sheet portions (111).
7. A flexible printed circuit board according to any one of claims 1 to 6, wherein the wide plate portion (111) has a width larger than that of the narrow plate portion (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122427134.XU CN216700423U (en) | 2021-10-09 | 2021-10-09 | Flexible printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122427134.XU CN216700423U (en) | 2021-10-09 | 2021-10-09 | Flexible printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216700423U true CN216700423U (en) | 2022-06-07 |
Family
ID=81830807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122427134.XU Active CN216700423U (en) | 2021-10-09 | 2021-10-09 | Flexible printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216700423U (en) |
-
2021
- 2021-10-09 CN CN202122427134.XU patent/CN216700423U/en active Active
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| GR01 | Patent grant |