CN206402536U - A kind of New-type Torque Sensor thick film circuit board - Google Patents
A kind of New-type Torque Sensor thick film circuit board Download PDFInfo
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- CN206402536U CN206402536U CN201720077299.XU CN201720077299U CN206402536U CN 206402536 U CN206402536 U CN 206402536U CN 201720077299 U CN201720077299 U CN 201720077299U CN 206402536 U CN206402536 U CN 206402536U
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- line layer
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- back side
- resistance
- pcb substrate
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Abstract
A kind of New-type Torque Sensor thick film circuit board, including PCB substrate, it is characterised in that：The PCB substrate is provided with front pad and backside pads, and the front of the PCB substrate, which is additionally provided with front surface conductors line layer, the front surface conductors line layer, is provided with top resistive layer；The PCB substrate back side is provided with back side conductor line layer, the back side conductor line layer includes the 3rd back side line layer and the 4th back side line layer being connected respectively with backside pads upper end, 3rd back side line layer is connected with the first front line layer and the second front line layer respectively by two vias, 3rd back side line layer is provided with Jumper conductors between two vias, and the laser repaiies quarter resistance a and laser is repaiied and carves two articles of branch roads middle part that resistance b is separately positioned on the 4th back side line layer.The utility model has the advantages that signal stabilization, service life are long.
Description
Technical field
The utility model is related to torque sensor technology field, especially a kind of New-type Torque Sensor thick film circuit board.
Background technology
Potentiometer type torque sensor is because its output signal symmetry is good, long working life, output in the presence of a harsh environment
The linearity is good, electromagnetism interference performance is good, manufacture craft is simple, low cost and other advantages, is the master of current EPS torque sensors
Stream.The core component of potentiometer type torque sensor is the thick film circuit board as signal acquisition.The part is in three oxidations
On the pcb board such as two aluminium ceramic substrates or FR4, produced by the silk-screen printing of thick film hybrid integrated circuit, infrared low-temperature setting etc.
Technology, has good surface contacted resistance, the circuitous pattern in high abrasion life-span in substrate surface formation.It is used as potentiometer type moment of torsion
Core component in sensor, the quality of thick film circuit board performance directly decides that EPS performance is good and bad.However, existing system
Make the thick film circuit board of technique acquisition, its correspondence potentiometer type torque sensor has the disadvantage that：1）Make in the presence of a harsh environment
Use short life；2）Stable output signal is poor, and noise is big, influences driver comfort；3）Due to left and right sides asymmetric information, lead
Cause is neglected indiscreet and negligent heavy when manipulating steering wheel.
The content of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of signal stabilization, the Novel torque of service life length
Sensor thick film circuit board.
The technical solution of the utility model is：A kind of New-type Torque Sensor thick film circuit board, including PCB substrate, it is special
Levy and be：The PCB substrate is provided with front pad and backside pads, and the front pad and backside pads are set by inwall
The via for having conductive layer is connected, and the positive bottom of the PCB substrate is provided with front insulating barrier, and front pad lower end is located at front and insulated
In layer, the front of the PCB substrate, which is additionally provided with front surface conductors line layer, the front surface conductors line layer, is provided with positive electricity
Resistance layer, the front surface conductors line layer includes the first front line layer and the second front line layer, and the top resistive layer includes
First resistor layer and second resistance layer, the first resistor layer and second resistance layer are symmetrically arranged at the first front line layer
With the middle part of the second front line layer；
The PCB substrate back side is provided with back side conductor line layer, the back side conductor line layer include respectively with the back side
The 3rd back side line layer and the 4th back side line layer of pad upper end connection, the 3rd back side line layer are set by two inwalls
The via for being equipped with conductive layer is connected with the top of the first front line layer and the top of the second front line layer respectively, and the described 3rd
Back side line layer is provided with cut-off point between two vias, and the cut-off point is provided with Jumper conductors, the 4th back side circuit
Laser is provided with layer and repaiies quarter resistance, and the laser, which repaiies quarter resistance, includes that laser repaiies quarter resistance a and laser is repaiied and carves resistance b, described
Laser repaiies quarter resistance a and laser is repaiied and carves two articles of branch roads middle part that resistance b is separately positioned on the 4th back side line layer, the 4th back of the body
Two branch road bottoms of face line layer by inwall be provided with the via of conductive layer respectively with the bottom of the first front line layer and
The bottom connection of second front line layer.
The front surface conductors line layer is to be printed on the conduction that in PCB substrate and thickness is below 10um containing silver conductive paste
Layer.
The back side conductor line layer is to be printed on the conduction that in PCB substrate and thickness is below 10um containing silver conductive paste
Layer.
The beneficial effects of the utility model are：
1st, the laser printed by the back side repaiies quarter resistance, and output signal characteristics are realized with fine setting, thus further protects
Uniformity, the bilateral symmetry of sensor output signal are demonstrate,proved.
2nd, overleaf the cut-off point of conductor line is connected by back side Jumper conductors, and the Jumper conductors use silver, carbon, phenolic aldehyde
Resin material is produced, and can ensure the low resistance requirement at bridging, and the anti-oxidation requirement of conductor can be met again.
3rd, back side conductor circuit is designed with cut-off point, can disconnect two top resistive layers（Carbon resistance body）Shunt circuit,
Ensure top resistive layer（Carbon resistance body）Resistance can be monitored and controlled, it is ensured that two resistance values are symmetrically entered so that
Lift the symmetry and the linearity of output voltage.
Brief description of the drawings
Fig. 1 is positive structure schematic of the present utility model；
Fig. 2 is structure schematic diagram of the present utility model；
In figure, 1-PCB substrates, 2- top resistive layers, 21- first resistors layer, 22- second resistances layer, 3- laser repaiies quarter electricity
Resistance, 31- laser repaiies quarter resistance a, 32- laser and repaiies quarter resistance b, 4- front surface conductors line layer, the first fronts of 41- line layer, 42- the
Two front line layers, 5- back side conductor line layers, the back side line layers of 51- the 3rd, the back side line layers of 52- the 4th, 6- fronts pad,
7- backside pads, 8- fronts insulating barrier, 9- vias, 10- Jumper conductors.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, a kind of New-type Torque Sensor thick film circuit board, including PCB substrate（1）, its feature exists
In：The PCB substrate（1）It is provided with front pad（6）And backside pads（7）, the front pad（6）And backside pads（7）
The via of conductive layer is provided with by inwall（9）Connection, the PCB substrate（1）Positive bottom is provided with front insulating barrier（8）, just
Face pad（6）Lower end is located at front insulating barrier（8）It is interior, the PCB substrate（1）Front be additionally provided with and front pad（6）On
Hold the front surface conductors line layer of connection（4）, the front surface conductors line layer（4）On be provided with top resistive layer（2）, the front
Conductive layer（4）Including the first front line layer（41）With the second front line layer（42）, the top resistive layer（2）Including
First resistor layer（21）With second resistance layer（22）, the first resistor layer（21）With second resistance layer（22）Respectively symmetrically set
In the first front line layer（41）With the second front line layer（42）Middle part；
The PCB substrate（1）The back side is provided with back side conductor line layer（5）, the back side conductor line layer（5）Including dividing
Not and backside pads（7）3rd back side line layer of upper end connection（51）With the 4th back side line layer（52）, the 3rd back side
Line layer（51）The via of conductive layer is provided with by two inwalls（9）Respectively with the first front line layer（41）Top and
Two front line layers（42）Top connection, the 3rd back side line layer（51）In two vias（9）Between middle part set
There is cut-off point, the cut-off point is provided with Jumper conductors（10）, the 4th back side line layer（52）On be provided with laser repair quarter electricity
Resistance（3）, the laser repaiies quarter resistance（3）Quarter resistance a is repaiied including laser（31）Quarter resistance b is repaiied with laser（32）, the laser repaiies
Carve resistance a（31）Quarter resistance b is repaiied with laser（32）It is separately positioned on the 4th back side line layer（52）Two branch roads in the middle part of, it is described
4th back side line layer（52）Two branch road bottoms the via of conductive layer is provided with by inwall（9）Respectively with the first frontal line
Road floor（41）Bottom and the second front line layer（42）Bottom connection.
The front surface conductors line layer（4）With back side conductor line layer（5）It is to be printed on PCB substrate containing silver conductive paste
（1）Upper and thickness is below 10um conductive layer.
In existing production process, the 3rd back side line layer（51）Be it is continuous, therefore first resistor layer（21）With
Two resistive layers（22）With the 3rd back side line layer（51）It is in parallel connection after connection, it is difficult to individually detect single first resistor
Layer（21）With single second resistance layer（22）Resistance value, i.e., cause pcb board due to two side resistance symmetry can not be detected
The output symmetry of two groups of resistive layers is bad.The utility model is due in the 3rd back side line layer（51）Upper setting cut-off point, this
When the 3rd back side line layer（51）Respectively with first resistor layer（21）With second resistance layer（22）Series connection, while first resistor layer
（21）With second resistance layer（22）Between be off-state, it is thus possible to the first resistor of setting layer（21）With second resistance layer
（22）It is monitored and controls；
Due to can be carried out testing in the pilot process of production and controlling, when test to first resistor layer（21）With
Two resistive layers（22）External output voltage uniformity it is poor when, will to first resistor layer（21）Or second resistance layer（22）Enter
Row is repaired, until meeting the requirements.When first resistor layer（21）With second resistance layer（22）The consistent sexual satisfaction of external output voltage will
Ask, then by printing Jumper conductors on cut-off point（10）By the 3rd back side line layer（51）Connect as one, it is final to cause
3rd back side line layer（51）With first resistor layer（21）, second resistance layer（22）Constitute shunt circuit.
In the present embodiment, the printing quality of thick-film resistor directly determines the noise size of output signal, thick-film resistor
Distribution of shapes determines output signal characteristics, and the laser that the back side is printed repaiies quarter resistance（3）, for further special to output signal
Property is finely adjusted, so as to ensure that the uniformity of sensor output signal, bilateral symmetry.The present embodiment uses PCB
Material, it is higher than existing conventional ceramic material reliability, it is not easy to break, influenceed small by ambient temperature and humidity, stability is good, and signal
Plate surface is smooth, reduces sensor signal noise.
Simply illustrate principle of the present utility model and most preferred embodiment described in above-described embodiment and specification, do not taking off
On the premise of from the utility model spirit and scope, the utility model also has various changes and modifications, these changes and improvements
Both fall within the range of claimed the utility model.
Claims (3)
1. a kind of New-type Torque Sensor thick film circuit board, including PCB substrate, it is characterised in that：The PCB substrate is provided with just
Face pad and backside pads, the via that the front pad and backside pads are provided with conductive layer by inwall are connected, the PCB
Substrate front side bottom is provided with front insulating barrier, and front pad lower end is located in the insulating barrier of front, and the front of the PCB substrate is also set
It is equipped with front surface conductors line layer, the front surface conductors line layer and is provided with top resistive layer, the front surface conductors line layer bag
The first front line layer and the second front line layer are included, the top resistive layer includes first resistor layer and second resistance layer, institute
State first resistor layer and second resistance layer is symmetrically arranged at the middle part of the first front line layer and the second front line layer；
The PCB substrate back side is provided with back side conductor line layer, the back side conductor line layer include respectively with backside pads
The 3rd back side line layer and the 4th back side line layer of upper end connection, the 3rd back side line layer are provided with by two inwalls
The via of conductive layer is connected with the top of the first front line layer and the top of the second front line layer respectively, the 3rd back side
Line layer is provided with cut-off point between two vias, and the cut-off point is provided with Jumper conductors, the 4th back side line layer
It is provided with laser and repaiies quarter resistance, the laser, which repaiies quarter resistance, includes that laser repaiies quarter resistance a and laser is repaiied and carves resistance b, the laser
Repair quarter resistance a and laser is repaiied and carves two articles of branch roads middle part that resistance b is separately positioned on the 4th back side line layer, the 4th back side line
Two branch road bottoms of road floor are provided with the bottom and second of the via of conductive layer respectively with the first front line layer by inwall
The bottom connection of front line layer.
2. New-type Torque Sensor thick film circuit board according to claim 1, it is characterised in that：The front surface conductors circuit
Layer is to be printed on the conductive layer that in PCB substrate and thickness is below 10um containing silver conductive paste.
3. New-type Torque Sensor thick film circuit board according to claim 1, it is characterised in that：The back side conductor circuit
Layer is to be printed on the conductive layer that in PCB substrate and thickness is below 10um containing silver conductive paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077299.XU CN206402536U (en) | 2017-01-19 | 2017-01-19 | A kind of New-type Torque Sensor thick film circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077299.XU CN206402536U (en) | 2017-01-19 | 2017-01-19 | A kind of New-type Torque Sensor thick film circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206402536U true CN206402536U (en) | 2017-08-11 |
Family
ID=59519284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720077299.XU Active CN206402536U (en) | 2017-01-19 | 2017-01-19 | A kind of New-type Torque Sensor thick film circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206402536U (en) |
-
2017
- 2017-01-19 CN CN201720077299.XU patent/CN206402536U/en active Active
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