CN112351666A - Wrapped heat-conducting grounding elastic piece and electronic equipment - Google Patents
Wrapped heat-conducting grounding elastic piece and electronic equipment Download PDFInfo
- Publication number
- CN112351666A CN112351666A CN202011212299.9A CN202011212299A CN112351666A CN 112351666 A CN112351666 A CN 112351666A CN 202011212299 A CN202011212299 A CN 202011212299A CN 112351666 A CN112351666 A CN 112351666A
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- Prior art keywords
- layer
- copper foil
- thermally conductive
- wrapped
- shielding film
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- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
-
- 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
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0064—Earth or grounding circuit
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a wrapped heat-conducting grounding elastic part and electronic equipment, belonging to the field of conductive components, in particular to a wrapped heat-conducting grounding elastic part, which comprises: a shielding film, a high temperature resistant elastic body; the shielding film is provided with a cavity used for wrapping the elastic body; the shielding film comprises a supporting film layer and a copper foil layer from inside to outside; and a transition metal layer and a conductive metal layer are sequentially arranged on the outer surface of the copper foil layer from inside to outside. Therefore, the wrapped heat-conducting grounding elastic piece adopts the technical means that the supporting film layer is adopted to improve the strength of the shielding film and the metal layer is electroplated on the surface of the copper foil layer, the technical problem that a metal coating electroplated by the elastic piece is thin and is easy to bend and crack is solved, and the technical effects that a thicker metal coating is easy to electroplate and the metal coating is not easy to bend and crack are achieved.
Description
Technical Field
The invention relates to the field of conductive components, in particular to a wrapped heat-conducting grounding elastic piece and electronic equipment.
Background
With the continuous development of integrated electronic technology, more and more electronic components are integrated in various electronic communication devices, and the electronic components can interfere with each other in the using process. At present, electronic communication equipment basically adopts a mode of a grounding elastic piece to guide away electromagnetic waves or static electricity generated by electronic components. The grounding elastic part mainly comprises a grounding film and an internal elastic body, in the 5G era, because high-frequency signals are more complex, the grounding requirement is higher, the traditional conductive cloth can not meet the requirement of the grounding film, and the base material of the grounding film is gradually transited to a metal composite film with good conductivity and higher consistency. At present, a metal layer is electroplated on the surface of the PI, but the PI surface is not easy to be electroplated with the metal layer or the metal plating layer electroplated by the elastic piece is thin and easy to bend and crack, so that the cost is high and the reliability is low.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a wrapped heat-conducting grounding elastic member and an electronic device, so as to solve the technical problem that a metal plating layer electroplated by the elastic member is thin and easy to bend and crack.
In order to solve the above technical problem, an embodiment of the present invention provides a wrapped heat-conducting ground elastic member, including: a shielding film, a high temperature resistant elastic body; the shielding film is provided with a cavity used for wrapping the elastic body; the shielding film comprises a supporting film layer and a copper foil layer from inside to outside; and a transition metal layer and a conductive metal layer are sequentially arranged on the outer surface of the copper foil layer from inside to outside.
Further, the support film layer comprises a PI film layer, a first bonding layer and a PET film layer from outside to inside.
Further, the PI film layer and the copper foil layer are coated on the surface of the copper foil layer by a glue pasting method, a melting solidification method or a liquid PI, and the PI film layer and the copper foil layer are solidified and compounded.
Further, a second bonding layer is arranged between the PET film layer and the elastic body.
Furthermore, a gap is formed between the elastic body and the PI film layer in the horizontal direction.
Furthermore, the wrapped heat-conducting grounding elastic piece also comprises a bonding part bonded at the bottom of the PET film layer; the bottom of the shielding film is provided with a bonding groove for penetrating through the bonding part.
Further, the transition metal layer is a nickel plating layer; the conductive metal layer is a gold plating layer/a tin plating layer.
Furthermore, the conductive metal layers on the surface of the copper foil layer are distributed at intervals.
Further, the elastic body is a silica gel foam or a polyurethane foam.
Further, the thickness of the copper foil layer ranges from 0.009 mm to 0.035 mm; the thicknesses of the transition metal layer and the conductive metal layer are less than 0.003 mm.
The embodiment of the invention also provides electronic equipment, wherein the wrapped heat-conducting grounding elastic piece is adopted by the electronic equipment; the electronic equipment further comprises a circuit board or a metal shell which is used for electrically connecting the wrapped heat-conducting grounding elastic piece; the wrapped heat-conducting grounding elastic piece is fixedly bonded with the circuit board or the metal shell.
According to the embodiment of the invention, the wrapped heat-conducting grounding elastic piece is provided, the shielding film comprises the supporting film layer and the copper foil layer from inside to outside, the outer surface of the copper foil layer is provided with the transition metal layer and the conductive metal layer, the strength of the shielding film is improved through the supporting film layer, so that the problem that the electroplated metal layer on the surface of the copper foil layer cracks due to bending is avoided, compared with other materials, the electroplated metal layer on the surface of the copper foil layer is easier, and the thickness of the metal layer can be thicker. Therefore, the wrapped heat-conducting grounding elastic piece adopts the technical means that the supporting film layer is adopted to improve the strength of the shielding film and the metal layer is electroplated on the surface of the copper foil layer, the technical problem that a metal coating electroplated by the elastic piece is thin and is easy to bend and crack is solved, and the technical effects that a thicker metal coating is easy to electroplate and the metal coating is not easy to bend and crack are achieved. And the copper foil layer can greatly improve the surface heat conduction capability or heat conduction flux, because the thickness of the copper foil layer is far higher than that of a metal layer or a metal coating of conductive cloth of a PI surface coating.
Further, the support rete includes PI rete, PET rete, and the PI rete can play the effect that improves the mechanical fatigue reliability of ground connection elastomer, and the PET rete can play the effect that prevents the copper foil fold, can effectually prevent that metal coating can not take place to buckle the fracture.
Furthermore, the conductive metal layers on the surface of the copper foil layer are distributed at intervals, so that the precious metal materials of the conductive metal layers can be saved, and the technical effect of reducing the production cost is achieved.
According to the electronic equipment, the technical means of the wrapping type heat-conducting grounding elastic piece is adopted, the technical problem that a metal coating plated on the grounding elastic piece in the electronic equipment is thin and easy to bend and crack is solved, and the performance of the electronic equipment for resisting mutual interference of electronic components is improved.
The invention is further described below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of a wraparound thermally conductive grounded elastomeric member of the present invention;
fig. 2 is a cross-sectional view of a wrapped thermally conductive grounded elastomer according to a second embodiment of the invention.
Description of the reference numerals
1 barrier film 11 support film layer
111 PI film layer 112 first adhesive layer
113 PET film layer 114 second adhesive layer
12 copper foil layer 13 bonding groove
2 elastic body 21 gap
3 adhesive part
Detailed Description
In order to more fully understand the technical content of the present invention, the technical solution of the present invention is further described and illustrated below with reference to the schematic drawings, but not limited thereto.
If directional indications (such as up, down, left, right, front, and rear … …) are provided in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the movement, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes 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 at least one such feature.
Example one
As shown in fig. 1, a wrapped thermally conductive grounded elastic member includes: the shielding film 1, the high temperature resistant elastic body 2, the shielding film 1 is provided with a cavity (not marked in the figure) for wrapping the elastic body 2.
Preferably, the shielding film 1 includes a supporting film layer 11 and a copper foil layer 12 from inside to outside, and a transition metal layer and a conductive metal layer are sequentially disposed on an outer surface of the copper foil layer 12 from inside to outside.
Preferably, the support film layer 11 includes, from outside to inside, a PI film layer 111, a first adhesive layer 112, and a PET film layer 113. The PI film layer 111 and the copper foil layer 12 are coated on the surface of the copper foil layer 12 by a glue pasting method, a melting and curing method or a liquid PI, and are cured and compounded. The combination of the copper foil layer 12 and the PI film layer 111 improves the mechanical fatigue reliability of the grounding elastomer, and overcomes the technical problem that the surface coating of the elastic element is easy to crack, and the PET film layer 113 can play a role in preventing the copper foil from folding, so that the cracking of the surface coating of the elastic element is further avoided. And the surface heat conductivity or heat conduction flux can be greatly improved by adopting the copper foil layer, because the thickness of the copper foil layer is far higher than that of a metal layer or a metal coating of conductive cloth of the PI surface coating.
Preferably, a second adhesive layer 114 is disposed between the PET film layer 113 and the elastic body 2.
Preferably, the elastic body 2 and the PI film layer 111 are provided with a gap 21 in the horizontal direction, and the gap 21 can provide a deformation space for the elastic body when heated.
Preferably, the wrapped heat-conducting grounding elastic member further comprises a bonding portion 3 bonded to the bottom of the PET film layer 113, the bottom of the shielding film 1 is provided with a bonding groove 13 for penetrating through the bonding portion 3, and the wrapped heat-conducting grounding elastic member can be bonded, positioned and fixed through the bonding portion 3.
Preferably, the transition metal layer is a nickel plating layer. The conductive metal layer is a gold-plated layer, and in other embodiments, the conductive metal layer is a tin-plated layer.
Preferably, the conductive metal layer on the surface of the copper foil layer 12 is distributed at intervals, the conductive metal distributed at intervals does not influence the normal function of the conductive substrate, and the material of the conductive metal layer, especially the precious metal such as gold plating, can be saved.
Preferably, the elastic body 2 is a silicone foam, and in other embodiments, the elastic body 2 is a polyurethane foam.
Preferably, copper foil layer 12 is formed by an electrolytic/calendaring process.
Preferably, the thickness of the copper foil layer ranges from 0.009 mm to 0.035mm, and the thickness of the transition metal layer and the conductive metal layer is less than 0.003 mm.
Example two
As shown in fig. 2, the difference from the first embodiment is that the second embodiment is a half structure of the first embodiment, and the structure of the first embodiment can be produced and then cut from a middle position.
The invention also discloses an electronic device adopting the wrapped heat-conducting grounding elastic piece, and the electronic device also comprises a circuit board or a metal shell for electrically connecting the wrapped heat-conducting grounding elastic piece, and the wrapped heat-conducting grounding elastic piece is fixedly bonded with the circuit board or the metal shell.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (11)
1. A wrap-around thermally conductive grounded elastic element, comprising: a shielding film, a high temperature resistant elastic body; the shielding film is provided with a cavity used for wrapping the elastic body; the shielding film comprises a supporting film layer and a copper foil layer from inside to outside; and a transition metal layer and a conductive metal layer are sequentially arranged on the outer surface of the copper foil layer from inside to outside.
2. The wrapped thermally conductive grounded elastic member as claimed in claim 1, wherein the support film layer comprises a PI film layer, a first adhesive layer, and a PET film layer from outside to inside.
3. The wrapped thermally conductive grounded elastic member as claimed in claim 2, wherein the PI film layer and the copper foil layer are coated on the surface of the copper foil layer by a glue method, a melt-curing method or a liquid PI curing method.
4. The wraparound thermally conductive grounded elastic member as claimed in claim 2, wherein a second adhesive layer is provided between the PET film layer and the elastic body.
5. The wraparound thermally conductive grounded elastic member of claim 2, wherein the elastic body and the PI film layer are horizontally spaced apart.
6. The wrapped thermally conductive grounded elastomer of claim 2, further comprising a bonding portion bonded to the bottom of the PET film layer; the bottom of the shielding film is provided with a bonding groove for penetrating through the bonding part.
7. The wraparound thermally conductive grounded elastomeric member of claim 1, wherein the transition metal layer is nickel plated; the conductive metal layer is a gold plating layer/a tin plating layer.
8. The wraparound thermally conductive grounded elastic member as claimed in claim 6, wherein the electrically conductive metal layers of the surface of the copper foil layer are spaced apart.
9. The wraparound thermally conductive grounded elastic member according to claim 1, wherein the elastic body is a silicone foam or a polyurethane foam.
10. A wrapped thermally conductive grounded elastomeric member as claimed in claim 1, wherein the copper foil layer has a thickness in the range of 0.009-0.035 mm; the thicknesses of the transition metal layer and the conductive metal layer are less than 0.003 mm.
11. An electronic device, wherein the wrapped thermally conductive grounded elastic member according to any one of claims 1 to 10 is used in the electronic device; the electronic equipment further comprises a circuit board or a metal shell which is used for electrically connecting the wrapped heat-conducting grounding elastic piece; the wrapped heat-conducting grounding elastic piece is fixedly bonded with the circuit board or the metal shell.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020107299414 | 2020-07-27 | ||
| CN202010729941 | 2020-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112351666A true CN112351666A (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011212299.9A Pending CN112351666A (en) | 2020-07-27 | 2020-11-03 | Wrapped heat-conducting grounding elastic piece and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112351666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113993362A (en) * | 2021-09-30 | 2022-01-28 | 深圳市卓汉材料技术有限公司 | Grounding elastic body and electronic equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100892720B1 (en) * | 2008-09-30 | 2009-04-15 | 조인셋 주식회사 | Solderable elastic electric contact terminal |
| US20110266031A1 (en) * | 2010-04-28 | 2011-11-03 | Joinset Co., Ltd. | Elastic electric contact terminal |
| CN204578887U (en) * | 2015-04-24 | 2015-08-19 | 苏州城邦达力材料科技有限公司 | A kind of electromagnetic shielding film being applicable to Rigid Flex |
| US20170229795A1 (en) * | 2015-03-23 | 2017-08-10 | Joinset Co., Ltd. | Elastic electric contact terminal with improved environmental resistance and fabricarion method therefor |
| CN206619706U (en) * | 2017-04-14 | 2017-11-07 | 深圳市卓汉材料技术有限公司 | One kind ground connection elastic component |
| CN109694673A (en) * | 2019-01-25 | 2019-04-30 | 苏州佳值电子工业有限公司 | Multi-functional integrated type conductive tape |
| CN110337233A (en) * | 2019-07-02 | 2019-10-15 | 深圳市卓汉材料技术有限公司 | A kind of packaging type conductive high temperature resistance elastomer |
| CN111200195A (en) * | 2018-11-20 | 2020-05-26 | 卓英社有限公司 | Elastic electric contact terminal |
-
2020
- 2020-11-03 CN CN202011212299.9A patent/CN112351666A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100892720B1 (en) * | 2008-09-30 | 2009-04-15 | 조인셋 주식회사 | Solderable elastic electric contact terminal |
| US20110266031A1 (en) * | 2010-04-28 | 2011-11-03 | Joinset Co., Ltd. | Elastic electric contact terminal |
| US20170229795A1 (en) * | 2015-03-23 | 2017-08-10 | Joinset Co., Ltd. | Elastic electric contact terminal with improved environmental resistance and fabricarion method therefor |
| CN204578887U (en) * | 2015-04-24 | 2015-08-19 | 苏州城邦达力材料科技有限公司 | A kind of electromagnetic shielding film being applicable to Rigid Flex |
| CN206619706U (en) * | 2017-04-14 | 2017-11-07 | 深圳市卓汉材料技术有限公司 | One kind ground connection elastic component |
| CN111200195A (en) * | 2018-11-20 | 2020-05-26 | 卓英社有限公司 | Elastic electric contact terminal |
| CN109694673A (en) * | 2019-01-25 | 2019-04-30 | 苏州佳值电子工业有限公司 | Multi-functional integrated type conductive tape |
| CN110337233A (en) * | 2019-07-02 | 2019-10-15 | 深圳市卓汉材料技术有限公司 | A kind of packaging type conductive high temperature resistance elastomer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113993362A (en) * | 2021-09-30 | 2022-01-28 | 深圳市卓汉材料技术有限公司 | Grounding elastic body and electronic equipment |
| CN113993362B (en) * | 2021-09-30 | 2022-05-10 | 深圳市卓汉材料技术有限公司 | Grounding elastic body and electronic equipment |
| US11646509B2 (en) | 2021-09-30 | 2023-05-09 | Shenzhen Johan Material Technology Co., Ltd. | Grounding elastic contact and electronic device |
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Application publication date: 20210209 |