CN109273878B - Electric connection device of flexible circuit board - Google Patents
Electric connection device of flexible circuit board Download PDFInfo
- Publication number
- CN109273878B CN109273878B CN201811117076.7A CN201811117076A CN109273878B CN 109273878 B CN109273878 B CN 109273878B CN 201811117076 A CN201811117076 A CN 201811117076A CN 109273878 B CN109273878 B CN 109273878B
- Authority
- CN
- China
- Prior art keywords
- terminal
- circuit board
- flexible circuit
- flat plate
- crimping
- 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.)
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Links
- 238000002788 crimping Methods 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims 2
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- XOMKZKJEJBZBJJ-UHFFFAOYSA-N 1,2-dichloro-3-phenylbenzene Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1Cl XOMKZKJEJBZBJJ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/50—Fixed connections
- H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
- H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The invention discloses an electric connection device of a flexible circuit board, which comprises a shell, a terminal, a crimping device, the flexible circuit board and a PCB board, wherein the terminal comprises a U-shaped body part, contact thorns are arranged at the positions, close to the top of the terminal, of the two opposite sides in the U-shaped body part, the crimping device comprises a flat plate part and vertical parts extending from the left side and the right side of the flat plate part, four strip-shaped holes penetrating through the flat plate part are arranged on the flat plate part in parallel, elastic bodies are fixedly arranged on the two strip-shaped holes close to the outer side, one end of each elastic body is a fixed end, the other end of each elastic body extends into a position between the outer side of the U-shaped body part of the terminal and the side wall of the shell, the two strip-shaped holes at the inner side are used for penetrating through the flexible circuit board, a crimping part, and can prevent the poor contact caused by the poor elasticity after the terminal is used for a long time.
Description
Technical Field
The invention relates to the field of electric connection, in particular to an electric connection device of a flexible circuit board.
Background
The flexible circuit board has a greater adaptability to space compared with a common PCB, so the flexible circuit board is more and more widely applied to electronic equipment, in practical application, the flexible circuit board generally needs to be connected to an electrical connector and is electrically connected with a terminal in the electrical connector so as to transmit signals, however, the flexible circuit board is generally designed to be relatively light and thin and is inconvenient to be plugged into the electrical connector, in addition, in order to realize connection with the flexible circuit board, the terminal in the electrical connector is generally contacted with a conductive part in the flexible circuit board by means of self elasticity, however, after several times of plugging and unplugging, metal fatigue is generated on metal forming the terminal, the elasticity is weakened, and even the phenomenon of poor contact with the conductive part of the flexible circuit board occurs.
Disclosure of Invention
The invention aims to provide an electric connection device of a flexible circuit board, which can realize stable and quick connection between the flexible circuit board and a terminal, can prevent metal fatigue of the terminal, and can prevent the terminal from generating poor contact with the flexible circuit board due to the reduction of elasticity after long-time use.
The invention relates to an electric connection device of a flexible circuit board, which comprises a shell, a terminal, a crimping device, the flexible circuit board and a PCB, wherein the shell comprises a side wall and a bottom wall, the side wall at the periphery encloses a terminal accommodating part, a plurality of terminals are arranged at the middle position of the terminal accommodating part in an arrayed manner, the terminal comprises a U-shaped body part, contact thorns are arranged at the positions, close to the top of the terminal, of the two opposite sides in the U-shaped body part of the terminal, the contact thorns are used for puncturing an insulating layer on the surface of the flexible circuit board so as to form electric contact with the flexible circuit board, spaces extending along the array direction of the terminals are respectively formed between the two sides of the U-shaped body part of the terminal and the side wall of the shell, the crimping device comprises a flat plate part and vertical parts extending from the left side and the right, four the direction in bar hole is parallel with the long limit direction of flat plate portion, is close to and fixedly is provided with the elastomer on two bar holes of both sides respectively, two the one end of elastomer is the stiff end, this end with two bar holes that are close to both sides on the flat plate portion are fixed, two in the space between the lateral wall of the U-shaped body portion both sides and the casing of elastomer's the other end extension income terminal, two elastomer outside face widths are roughly equal with the vertical lateral wall medial surface width of casing, and two inboard bar holes are used for passing flexible circuit board the lower part intermediate position of flat plate portion is provided with crimping portion with the parallel direction in long limit of flat plate portion, crimping portion's end is the halfcylinder.
According to a further technical scheme, bolt locking devices are arranged on the outer sides of the left side wall and the right side wall of the shell respectively, protruding portions are formed on the inner sides of the vertical portions of the crimping device respectively, and the protruding portions are locked with the bolt locking devices in a locking mode, so that the crimping device is fixed on the shell.
According to the technical scheme, a hole is formed in the bottom wall of the shell, the lower portion of the U-shaped body of the terminal is connected with a welding portion, and the welding portion is welded on the PCB after passing through the hole in the bottom wall.
Further, the press-contact portion and the flat plate portion are integrally configured.
According to a further technical scheme, the elastic body is plate-shaped.
According to a further technical scheme, the elastic body and the two strip-shaped holes on the two sides, close to the flat plate part, are fixed by gluing or buckling.
The invention has the beneficial effects that:
the elastic body on the crimping device extends into the space between the two outer sides of the U-shaped part of the terminal and the side wall of the shell, and provides a reaction force for the terminal in the crimping process of the flexible circuit board, so that metal fatigue of the terminal is prevented, and poor contact caused by weakening of the elasticity of the terminal after long-time use can be avoided.
The lower side of the crimping device is provided with a crimping part, so that the flexible circuit board can be crimped onto the terminal with a large force, and the flexible circuit board and the terminal are firmly and electrically connected.
The bar-shaped holes arranged on the flat plate part of the crimping device roughly fix the flexible circuit board, the flexible circuit board can be positioned and conveniently spliced, the width of the outer side surface of the two elastic bodies is roughly equal to the width of the inner side surface of the longitudinal side wall of the shell, the positioning effect can be played in the crimping process, and the damage of a terminal caused by the direction dislocation is prevented.
The contact pricks are arranged on the inner side of the U-shaped body part of the terminal, so that the flexible circuit board can be quickly connected with the terminal without removing an insulating layer of the flexible circuit board in advance.
Drawings
Fig. 1 is a sectional view of an electrical connection device of a flexible circuit board, perpendicular to a terminal arrangement direction.
Fig. 2 is a schematic cross-sectional view of a locking structure of the crimping device and the housing.
Fig. 3 is a plan view of the crimping apparatus.
Fig. 4 is a cross-sectional view of the electrical connection device of the flexible circuit board in an electrical connection state, perpendicular to the terminal arrangement direction.
Detailed Description
An electric connection device of a flexible circuit board comprises a shell 1, a terminal 2, a crimping device 3, a flexible circuit board 4 and a PCB 5, wherein the shell 1 comprises a side wall and a bottom wall, bolt locking devices 11 and 12 are arranged on the outer sides of the left side wall and the right side wall, a terminal accommodating part 13 is enclosed by the peripheral side walls, a plurality of terminals 2 are arranged in the terminal accommodating part 13, the terminal 2 is positioned in the middle position of the terminal accommodating part, the terminal 2 comprises a U-shaped body part 21 and a welding part 22 connected to the lower part of the U-shaped body part, a hole is arranged on the bottom wall of the shell 1, the welding part 22 of the terminal 2 is welded on the PCB 5 after passing through the hole of the bottom wall, contact thorns 212 and 213 are arranged at the positions close to the tops of the terminals 2 on the two opposite sides in the U-shaped body part of the terminal 2, the contact thorns 212 and 213 are used for puncturing an, spaces 131, 132 extending in the arrangement direction of the terminals 2 are formed, respectively, the pressure bonding device 3 includes a flat plate portion 31 and vertical portions 32, 33 extending from both sides of the flat plate portion 31, protrusions 321, 331 are formed inside the vertical portions 32, 33, the protrusions 321, 331 are latched with latch means 11, 12 outside the left and right side walls of the housing 1, thereby fixing the pressure bonding device 3 to the housing 1, four strip holes 311, 312, 313, 314 penetrating the flat plate portion 31 are provided in parallel on the flat plate portion 31, the directions of the four strip holes 311, 312, 313, 314 are parallel to the longitudinal direction of the flat plate portion 31, elastic bodies 34, 35 are fixedly provided on the two strip holes 311, 314 near the outer side, the elastic bodies 34, 35 are plate-shaped, one end of the elastic bodies 34, 35 is a fixed end, and is fixed with the two strip holes 311, 314 near the outer side of the flat plate portion 31, the fixing manner is gluing or snapping, the other ends of the elastic bodies 34, 35 extend into the spaces 131, 132 and contact with two outer sides of the U-shaped body part 21 of the terminal 2, the width of the outer side surfaces of the two elastic bodies 34, 35 arranged on the crimping device 3 is approximately equal to the width of the inner side surface of the longitudinal side wall of the housing 1, and the two elastic bodies can play a role in positioning in the crimping process, the two inner strip-shaped holes 312, 313 are used for penetrating the flexible circuit board 4, the crimping part 36 is arranged in the middle of the lower part of the flat plate part 31 in the direction parallel to the long side of the flat plate part 31, and the tail end of the crimping part 36 is a semi.
The process of realizing the electric connection of the electric connection device of the flexible circuit board is as follows: one end of the flexible circuit board 4 passes through one of the two strip-shaped holes 312, 313 on the inner side and extends downwards from the upper side of the flat plate part 31, goes around the extreme end of the crimping part 36 and passes out from the other of the two strip-shaped holes 312, 313 on the inner side from the bottom to the top, a plurality of terminals 2 sequentially pass through the holes on the bottom wall of the shell 1 and are welded and fixed on the PCB 5, the crimping device 3 with the flexible circuit board 4 is pressed towards the terminals 2 of the shell 1, the elastic bodies 34, 35 of the crimping device 3 extend into the spaces 131, 132 between the two outer sides of the U-shaped body part of the terminals 2 and the side wall of the shell 1, the crimping part 36 is aligned with the U-shaped body part of the terminals 2, the flexible circuit board 4 is contacted with the contact pricks 212, 213 on the terminals 2, the flexible circuit board 4 is contacted with the insulation layer on the prick surface by the contact prick, at the same time, the U-shaped main body of the terminal 2 deforms in the direction of the side wall as the crimping device 3 is crimped, the elastic bodies 34, 35 are pressed in the direction of the side wall, the elastic bodies 34, 35 exert forces in opposite directions on the terminal 2, and finally the protrusions 321, 331 of the crimping device 3 are locked with the locking devices 11, 12 on the outer sides of the left and right side walls of the housing 1, so that the crimping device 3 is fixed to the housing 1, and an electrical connection state is formed.
The device can realize the stable electric contact between the flexible circuit board and the terminal, the width of the outer side surface of the two elastic bodies arranged on the crimping device is approximately equal to the width of the inner side surface of the longitudinal side wall of the shell, the positioning effect can be realized in the crimping process, the damage of the terminal caused by the direction dislocation is prevented, the elastic bodies exert acting force on the terminal in the electric connection state, and the poor contact caused by the poor elasticity of the terminal after long-term use is prevented.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (5)
1. An electric connection device of a flexible circuit board comprises a shell, terminals, a crimping device, the flexible circuit board and a PCB, wherein the shell comprises side walls and a bottom wall, the side walls at the periphery enclose a terminal accommodating part, a plurality of terminals are arranged in the middle of the terminal accommodating part, each terminal comprises a U-shaped body part, contact thorns are arranged at the positions, close to the tops of the terminals, of the two opposite sides in the U-shaped body part of each terminal and are used for puncturing an insulating layer on the surface of the flexible circuit board so as to form electric contact with the flexible circuit board, spaces extending along the arrangement direction of the terminals are respectively formed between the two sides of the outer part of the U-shaped body part of each terminal and the side walls of the shell, each crimping device comprises a flat plate part and vertical parts extending from the left side and the right side of the flat plate part, four strip-shaped holes penetrating through the flat plate part are arranged on the flat, the two strip holes close to the two sides are respectively fixedly provided with an elastic body, one end of each of the two elastic bodies is a fixed end, the fixed end is fixed with the two strip holes close to the two sides on the flat plate part, the other end of each of the two elastic bodies extends into a space between the two sides of the U-shaped body part of the terminal and the side wall of the shell, the width of the outer side surface of each of the two elastic bodies is approximately equal to that of the inner side surface of the longitudinal side wall of the shell, in the crimping process of the flexible circuit board, the elastic bodies provide reaction force for the terminal to prevent the poor contact phenomenon caused by metal fatigue and long-time use of the terminal, the two strip holes at the inner side are used for penetrating through the flexible circuit board, a crimping part is arranged in the middle position of the lower part of the flat plate part in the, and the inner sides of the vertical parts of the crimping device are respectively provided with a protrusion part, and the protrusion parts are locked with the bolt locking device, so that the crimping device is fixed on the shell.
2. The electrical connection device for flexible printed circuit as claimed in claim 1, wherein the bottom wall of the housing has a hole, and the lower portion of the U-shaped body of the terminal has a soldering portion connected thereto, the soldering portion being soldered to the PCB after passing through the hole of the bottom wall.
3. An electrical connecting device of a flexible circuit board according to claim 1, said crimping portion being integrally constructed with said flat plate portion.
4. The electrical connecting device for flexible circuit board as claimed in claim 1, wherein said two elastic bodies are plate-shaped.
5. The electrical connection device of claim 4, wherein the two elastic bodies are fixed to the two strip-shaped holes on the two sides of the flat plate portion by gluing or snapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117076.7A CN109273878B (en) | 2018-09-25 | 2018-09-25 | Electric connection device of flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811117076.7A CN109273878B (en) | 2018-09-25 | 2018-09-25 | Electric connection device of flexible circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109273878A CN109273878A (en) | 2019-01-25 |
| CN109273878B true CN109273878B (en) | 2020-09-01 |
Family
ID=65198085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811117076.7A Active CN109273878B (en) | 2018-09-25 | 2018-09-25 | Electric connection device of flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109273878B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6371781B1 (en) * | 2000-09-01 | 2002-04-16 | Hon Hai Aprecision Ind. Co., Ltd. | ZIF memory module assembly |
| JP4291800B2 (en) * | 2005-06-21 | 2009-07-08 | 日本圧着端子製造株式会社 | Electrical connection device and connector |
| CN201146260Y (en) * | 2007-12-11 | 2008-11-05 | 天瑞电子科技发展(昆山)有限公司 | Connecting device |
| JP6312028B2 (en) * | 2014-01-09 | 2018-04-18 | パナソニックＩｐマネジメント株式会社 | Cable holding member, plug connector, connector device, and method of assembling plug connector |
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2018
- 2018-09-25 CN CN201811117076.7A patent/CN109273878B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109273878A (en) | 2019-01-25 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200807 Address after: 341000 electronic information industry technology city, Longnan economic and Technological Development Zone, Longnan County, Ganzhou City, Jiangxi Province Applicant after: Longnan Junya Flexible Intelligent Technology Co., Ltd Address before: 266000 Shandong Province, Qingdao city Laoshan District Songling Road No. 99 Applicant before: Qingdao University Of Science And Technology |
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| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |