CN207503747U - A kind of synthetic carbon film type carbon sheet - Google Patents
A kind of synthetic carbon film type carbon sheet Download PDFInfo
- Publication number
- CN207503747U CN207503747U CN201721268574.2U CN201721268574U CN207503747U CN 207503747 U CN207503747 U CN 207503747U CN 201721268574 U CN201721268574 U CN 201721268574U CN 207503747 U CN207503747 U CN 207503747U
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- CN
- China
- Prior art keywords
- layer
- carbon film
- copper foil
- gold
- film layer
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- 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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Abstract
The utility model discloses a kind of synthetic carbon film type carbon sheet, carbon plate structure includes the copper foil plate as substrate, gold-plated copper foil layer and carbon film layer and exit as conductive layer；It is coated on by the gold-plated copper foil layer of design on the circuit after the erosion copper of copper foil plate；Carbon film layer is prepared in the designed lines after the erosion copper of copper foil plate；Silver layer, insulating layer and Low ESR carbon film layer are further included, exit is the riveted position of end, and the riveted position prepares silver layer after copper foil plate loses copper；The silver layer at exit riveted position is electrically connected with the overlapping part between gold-plated copper foil layer or carbon film layer or Low ESR carbon film layer to be smooth；Low ESR carbon film layer is prepared on silver layer and insulating layer overlap joint position.The utility model residual quantity is very small, and attenuation, service life, oxidation resistance, feel greatly improve.
Description
Technical field
The utility model is related to the technical field of carbon plate used in carbon-film potentiometer, particularly a kind of synthesis film type carbon carbon
Piece.
Background technology
Synthesis film type carbon potentiometer be widely used in making in the electronic equipments such as multi-media sound system, radio cassette player, sound console volume,
Tone, balance control and electric current, voltage are adjusted, and can also be achieved remote control adjustment.Synthetic carbon film type carbon sheet is the basic portion of its structure
Part, brush and contact thereon are on the move, constantly change on synthetic carbon film type carbon sheet print carbon circle (item), print silver circle (
Item) contact position, so as to obtaining different resistance values between terminal.A kind of structure of synthetic carbon film type carbon sheet includes base
Layer, conductive layer and exit, conductive layer application to printed is directly printed on the surface of base side, exit or galvanic corrosion is in base
It draws position and is smoothly electrically connected with conductive layer, conductive layer includes carbon film layer and metal conducting layer.
There are two types of the structures and processing technology of traditional synthetic carbon film type carbon sheet：
The first, base is bakelite substrate, and conductive layer is silver layer and carbon film layer, and the method for processing claims silver-colored carbon printer
Skill, i.e., according to design corresponding site print silver layer, printing carbon-coating, after on silver layer print low-resistance carbon-coating.This structure and work
Skill is simple, is most commonly used easy structure and mode of printing in the market, is only capable of being used in the product of common low grade, residual compared with
Height, the service life is shorter, and oxidation resistance is poor, and attenuation is small etc..
Second, base is copper foil plate, and conductive layer is gold-plated copper foil layer and carbon film layer, and the method for processing claims copper foil carbon to print
Dataller's skill, and low-resistance carbon-coating is printed on gold-plated copper foil layer.The structure and technique are compared with the first in residual, attenuation, anti-oxidant
It increases in ability, service life, but because copper foil is too hard, is unable to control in riveted exit technique, be often led to contact not
It is good（INT）Occur, cause the generation of product hidden danger.
The Chinese utility model patent of Publication No. CN 101419857A, it discloses a kind of synthetic carbon film type carbon sheet and
Its preparation process is related to synthetic carbon film type carbon sheet used in carbon-film potentiometer and its preparation process.The structure packet of its carbon plate
The copper foil plate as substrate is included, Gold plated Layer, exit silver layer as conductive layer, overlap joint curing Low ESR carbon film layer and curved
The carbon film layer of characteristic variations；Its exit uses traditional pumping pipe end in silver layer riveted or new-type plane material strip on copper foil
Directly welding is transmitted；Silver layer is printed after copper foil plate loses copper in the riveted position.The preparation process of its carbon plate, including：It will
It loses the required circuit after copper and carries out gold-plated processing；Erosion Copper treatment is carried out at the riveted position of exit, at the erosion copper position
Print silver layer；Print carbon film layer；On the gold-plated copper foil of circuit has been lost and silver prints Low ESR carbon with gold-plated copper foil overlapping part
Film layer.Advantage is apparent：Residual resistance very little, attenuation, service life, oxidation resistance and feel improve；Riveted is reliable, connects
It touches good.But its Low ESR carbon film layer is printed on gold-plated copper foil layer, causes conductive characteristic unstable, and affect whole
Conductive effect, and gold-plated copper foil layer span is big, and cost is higher.
Utility model content
The technical problems to be solved in the utility model is in view of the above shortcomings of the prior art, to provide a kind of synthesis film type carbon
Carbon plate.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of synthetic carbon film type carbon sheet,
Including the copper foil plate as substrate, gold-plated copper foil layer and carbon film layer and exit as conductive layer；By the gold-plated copper foil of design
Layer be coated on copper foil plate erosion copper after circuit on；Carbon film layer is prepared in the designed lines after the erosion copper of copper foil plate；It further includes
Silver layer, insulating layer and Low ESR carbon film layer, exit are the riveted position of end, and the riveted position is made after copper foil plate loses copper
Standby silver layer；Overlapping part between the silver layer at exit riveted position and gold-plated copper foil layer or carbon film layer or Low ESR carbon film layer is
Smooth electrical connection；Low ESR carbon film layer is prepared on silver layer and insulating layer overlap joint position.
In above-mentioned technical proposal, the gold-plated copper foil layer includes principal part and pair portion, and the smaller pair portion of area is larger from area
Principal part on draw, principal part is directly electrically connected with silver layer, and principal part is electrically connected by secondary portion with carbon film layer.
In above-mentioned technical proposal, the gold-plated copper foil layer part strides into the printing zone of Low ESR carbon film layer, in gold plated copper
What layers of foil surface strode into the printing zone is partially covered with above-mentioned insulating layer.
In above-mentioned technical proposal, electrically insulated from one another, i.e. copper foil plate between exit in the plane between the exit
It is eclipsed copper.
In above-mentioned technical proposal, the carbon film layer, insulating layer, Low ESR carbon film layer are designed to vertical bar shape, fan-shaped or circle.
The beneficial effects of the utility model are：
First, its performance significantly improves with the product of this carbon plate preparation, residual resistance very little can be done to less than 2 ohm simultaneously
More accurate, attenuation can be increased to 100dB (decibels）More than（Insertion loss is less than 0.1dB）, the service life can improve to 60,000 times with
On, oxidation resistance is extremely strong, is particularly suitable for the use of high highly sophisticated products；
Second, the riveted position riveted of exit is reliable, contact is good, avoids contact with bad（INT）Occur, it is ensured that product
Matter；
Third, using material strip leg technique, because its technological operation is simple, conveniently, therefore its is efficient, can reduce cost；
Fourth, the reduction of gold-plated amount can effectively save manufacturing cost.
Description of the drawings
Fig. 1 is the carbon plate structure diagram of the utility model；
Fig. 2 is the preparation process schematic diagram of the utility model.
In figure, 1, copper foil plate；2nd, gold-plated copper foil layer；3rd, carbon film layer；4th, exit；5th, silver layer；6th, insulating layer；7th, Low ESR
Carbon film layer；21st, principal part；22nd, pair portion.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of synthetic carbon film type carbon sheet, including the copper foil plate 1 as substrate, as the gold-plated of conductive layer
Copper foil layer 2 and carbon film layer 3 and exit 4；It is coated on by the gold-plated copper foil layer 2 of design on the circuit after the erosion copper of copper foil plate 1；
Carbon film layer 3 is prepared in the designed lines after the erosion copper of copper foil plate 1；Silver layer 5, insulating layer 6 and Low ESR carbon film layer 7 are further included,
Exit 4 is the riveted position of end, and the riveted position prepares silver layer 5 after copper foil plate 1 loses copper；4 riveted position of exit
Silver layer 5 and the overlapping part between gold-plated copper foil layer 2 or carbon film layer 3 or Low ESR carbon film layer 7 be electrically connected to be smooth；In silver
Layer 5 overlaps with insulating layer 6 and prepares Low ESR carbon film layer 7 on position.
Wherein, the gold-plated copper foil layer 2 includes principal part 21 and pair portion 22, and the smaller pair portion 22 of area is from the larger master of area
It is drawn in portion 21, principal part 21 is directly electrically connected with silver layer 5, and principal part 21 is electrically connected by secondary portion 22 with carbon film layer 3.
Wherein, 2 part of gold-plated copper foil layer strides into the printing zone of Low ESR carbon film layer 7, on gold-plated 2 surface of copper foil layer
Stride into the printing zone is partially covered with above-mentioned insulating layer 6.
Wherein, electrically insulated from one another, i.e. copper foil plate 1 between exit 4 are eclipsed copper in the plane between the exit 4.
Wherein, the carbon film layer 3, insulating layer 6, Low ESR carbon film layer 7 are designed to vertical bar shape, fan-shaped or circle.This practicality
New embodiment is vertical bar shape.
As shown in Fig. 2, a kind of preparation process of synthetic carbon film type carbon sheet of the utility model, includes the following steps：
Step 1：In the circuit position that copper foil plate 1 prepares gold-plated copper foil layer 2, the designed exit 4 in copper foil plate 1
Riveted position, the circuit position for preparing carbon film layer 3 in copper foil plate 1 carry out erosion Copper treatment；
Step 2：By design requirement, copper foil plate 1 prepare gold-plated copper foil layer 2 circuit position carry out erosion Copper treatment after, will
Required circuit carries out gold-plated processing after losing copper, obtains gold-plated copper foil layer 2；
Step 3：By design requirement, lost at the circuit position at the riveted position of the designed exit 4 of copper foil plate 1
After Copper treatment, the silver layer 5 being electrically connected with gold-plated copper foil layer 2 is printed at the erosion copper position；
Step 4：By design requirement, after carrying out erosion Copper treatment at the circuit position of the designed carbon film layer 3 of copper foil plate 1,
The carbon film layer 3 that printing is electrically connected with gold-plated copper foil layer 2 at the erosion copper position；
Step 5：By design requirement, insulating layer 6 is printed on the bypass position along the circuit position of carbon film layer 3；
Step 6：By design requirement, the silver layer 5 being overlapped on insulating layer 6 is printed on exit 4, is printed on insulating layer 6
Brush the Low ESR carbon film layer 7 being electrically connected with the silver layer 5；
Step 7：It can be used to take out in exit 4 and connect outside the sub- sludge ice riveted of pipe end or the progress of plane material strip terminal leg technique
It connects.
Gold-plated copper foil layer 2 in the utility model refers to through gold-plated method, the thin shape layer gold obtained；Silver layer 5 refers to will
The slurry of silver powder etc. and adhesive is coated in corresponding site, the thin layer of the argentiferous obtained by the method for printing；Carbon film layer 3
The slurry of graphite, carbon black for conductive material etc. and adhesive by the method for printing, is obtained coated in corresponding site.
And Low ESR carbon film layer 7 can be low-resistance carbon-coating.
Above embodiment only indicates that rather than limits the utility model, therefore all according to the utility model patent application
The equivalent change or modification that method described in range is done is included in the utility model patent application range.
Claims (5)
1. a kind of synthetic carbon film type carbon sheet, it is characterised in that：Including the copper foil plate as substrate, the gold-plated copper foil as conductive layer
Layer and carbon film layer and exit；It is coated on by the gold-plated copper foil layer of design on the circuit after the erosion copper of copper foil plate；It is prepared by carbon film layer
In designed lines after the erosion copper of copper foil plate；Silver layer, insulating layer and Low ESR carbon film layer are further included, exit is the riveting of end
Position is closed, the riveted position prepares silver layer after copper foil plate loses copper；The silver layer at exit riveted position and gold-plated copper foil layer or
Overlapping part between carbon film layer or Low ESR carbon film layer is smooth electrical connection；It is low with being prepared on insulating layer overlap joint position in silver layer
Impedance carbon film layer.
2. a kind of synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：The gold-plated copper foil layer includes principal part
With secondary portion, the smaller pair portion of area is drawn from the larger principal part of area, and principal part is directly electrically connected with silver layer, and principal part passes through secondary portion
It is electrically connected with carbon film layer.
3. a kind of synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：The gold-plated copper foil layer part strides into
The printing zone of Low ESR carbon film layer, the printing zone is striden on gold-plated copper foil layer surface is partially covered with above-mentioned insulation
Layer.
4. a kind of synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：Between the exit in the plane
Copper foil plate between electrically insulated from one another, i.e. exit is eclipsed copper.
5. a kind of synthetic carbon film type carbon sheet according to claim 1, it is characterised in that：The carbon film layer, insulating layer, low-resistance
Anti- carbon film layer is designed to vertical bar shape, fan-shaped or circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268574.2U CN207503747U (en) | 2017-09-29 | 2017-09-29 | A kind of synthetic carbon film type carbon sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268574.2U CN207503747U (en) | 2017-09-29 | 2017-09-29 | A kind of synthetic carbon film type carbon sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207503747U true CN207503747U (en) | 2018-06-15 |
Family
ID=62499726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721268574.2U Expired - Fee Related CN207503747U (en) | 2017-09-29 | 2017-09-29 | A kind of synthetic carbon film type carbon sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207503747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564642A (en) * | 2017-09-29 | 2018-01-09 | 广东升威电子制品有限公司 | A kind of synthetic carbon film type carbon sheet and its preparation technology |
-
2017
- 2017-09-29 CN CN201721268574.2U patent/CN207503747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107564642A (en) * | 2017-09-29 | 2018-01-09 | 广东升威电子制品有限公司 | A kind of synthetic carbon film type carbon sheet and its preparation technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |