CN206402526U - A kind of torque sensor thick film circuit board - Google Patents
A kind of torque sensor thick film circuit board Download PDFInfo
- Publication number
- CN206402526U CN206402526U CN201720077300.9U CN201720077300U CN206402526U CN 206402526 U CN206402526 U CN 206402526U CN 201720077300 U CN201720077300 U CN 201720077300U CN 206402526 U CN206402526 U CN 206402526U
- Authority
- CN
- China
- Prior art keywords
- line layer
- layer
- resistance
- pcb substrate
- back side
- 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.)
- Active
Links
Landscapes
- Parts Printed On Printed Circuit Boards (AREA)
Abstract
A kind of 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, the front of the PCB substrate is additionally provided with the front surface conductors line layer being connected with front pad upper end, the 3rd front line layer is connected with the first front line layer, the second front line layer respectively, top resistive layer is provided with the front surface conductors line layer, part of the 3rd front line layer between the first front line layer, the second front line layer is provided with Jumper conductors；The PCB substrate back side is provided with the back side conductor line layer being connected with backside pads upper end, the laser repaiies quarter resistance a and laser is repaiied and carves two branch roads middle part that resistance b is separately positioned on back side conductor line layer, and the via that two branch road bottoms of the back side conductor line layer are provided with conductive layer by inwall is connected with the first front line layer and the second front line layer respectively.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 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 torque sensing of service life length
Device thick film circuit board.
The technical solution of the utility model is：A kind of torque sensor thick film circuit board, including PCB substrate, its feature exist
In：The PCB substrate is provided with front pad and backside pads, and the front pad and backside pads are provided with by inwall and led
The via connection of electric layer, the positive bottom of the PCB substrate is provided with front insulating barrier, and front pad lower end is located at front insulating barrier
Interior, the front of the PCB substrate is additionally provided with the front surface conductors line layer being connected with front pad upper end, the front surface conductors circuit
Layer include the first front line layer, the second front line layer and the 3rd front line layer, the 3rd front line layer respectively and
Be provided with top resistive layer on first front line layer, the second front line layer connection, the front surface conductors line layer, it is described just
Surface resistance layer includes first resistor layer and second resistance layer, and first resistor layer and second resistance layer are symmetrically arranged at the
The middle part of one front line layer and the second front line layer；
The 3rd front line layer and the first front line layer, the junction of the second front line layer are respectively the first company
Contact and the second tie point, the 3rd front line layer are provided with cut-off point between the first tie point and the second tie point, described
Cut-off point is provided with Jumper conductors；
The PCB substrate back side is provided with the back side conductor line layer being connected with backside pads upper end, the back side conductor
Laser is provided with line layer 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 repaiies quarter resistance a and laser is repaiied and carves two branch roads middle part that resistance b is separately positioned on back side conductor line layer, the back of the body
Two articles of branch road bottoms of face conductive layer by inwall be provided with the via of conductive layer respectively with the first front line layer and
Two front line layer connections.
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, connected in the cut-off point of front surface conductors circuit by front Jumper conductors, 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, front surface conductors 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, the front line layers of 43- the 3rd, 5- back side conductor line layers, 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 torque sensor thick film circuit board, including PCB substrate（1）, it is characterised in that：Institute
State PCB substrate（1）It is provided with front pad（6）And backside pads（7）, the front pad（6）And backside pads（7）By interior
Wall is provided with the via of conductive layer（9）Connection, the PCB substrate（1）Positive bottom is provided with front insulating barrier（8）, front 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）Upper end connection
Front surface conductors line layer（4）, the front surface conductors line layer（4）Including the first front line layer（41）, the second front line layer
（42）With the 3rd front line layer（43）, the 3rd front line layer（43）Respectively with the first front line layer（41）, second
Front line layer（42）Connection, the front surface conductors line layer（4）On be provided with top resistive layer（2）, 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
It is symmetricly set on the first front line layer（41）With the second front line layer（42）Middle part；
The 3rd front line layer（43）With the first front line layer（41）, the second front line layer（42）Junction
Respectively the first tie point and the second tie point, the 3rd front line layer（43）Set between the first tie point and the second tie point
Cut-off point is equipped with, the cut-off point is provided with Jumper conductors（10）；
The PCB substrate（1）The back side is provided with and backside pads（7）The back side conductor line layer of upper end connection（5）, it is described
Back side conductor line layer（5）On be provided with laser and repair quarter 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, which is repaiied, carves resistance a（31）Quarter resistance b is repaiied with laser（32）It is separately positioned on the back of the body
Face conductive layer（5）Two branch roads in the middle part of, the back side conductor line layer（5）Two branch road bottoms set by inwall
There is the via of conductive layer（9）Respectively with the first front line layer（41）With the second front line layer（42）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 front line layer（43）Be it is continuous, therefore first resistor layer（21）With
Two resistive layers（22）With the 3rd front line layer（43）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 front line layer（43）Upper setting cut-off point, this
When the 3rd front line layer（43）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 front line layer（43）Connect as one, it is final to cause
3rd front line layer（43）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 torque sensor thick film circuit board, including PCB substrate, it is characterised in that：The PCB substrate is provided with face bonding
Disk and backside pads, the via that the front pad and backside pads are provided with conductive layer by inwall are connected, the PCB substrate
Positive bottom is provided with front insulating barrier, and front pad lower end is located in the insulating barrier of front, the front of the PCB substrate be additionally provided with
The front surface conductors line layer of front pad upper end connection, the front surface conductors line layer is including the first front line layer, second just
Face line layer and the 3rd front line layer, the 3rd front line layer respectively with the first front line layer, the second front circuit
Layer connection, is provided with top resistive layer on the front surface conductors line layer, and the top resistive layer includes first resistor layer and the
Two resistive layers, the first resistor layer and second resistance layer are symmetrically arranged at the first front line layer and the second front circuit
The middle part of layer；
The 3rd front line layer and the first front line layer, the junction of the second front line layer are respectively the first tie point
With the second tie point, the 3rd front line layer is provided with cut-off point, the disconnection between the first tie point and the second tie point
Point is provided with Jumper conductors；
The PCB substrate back side is provided with the back side conductor line layer being connected with backside pads upper end, the back side conductor 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 branch roads middle part that resistance b is separately positioned on back side conductor line layer, and the back side is led
Two branch road bottoms of body line layer by inwall be provided with the via of conductive layer respectively with the first front line layer and second just
Face line layer connection.
2. torque sensor thick film circuit board according to claim 1, it is characterised in that：The front surface conductors line layer is
It is printed on containing silver conductive paste in PCB substrate and thickness is below 10um conductive layer.
3. torque sensor thick film circuit board according to claim 1, it is characterised in that：The back side conductor line layer is
It is printed on containing silver conductive paste in PCB substrate and thickness is below 10um conductive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077300.9U CN206402526U (en) | 2017-01-19 | 2017-01-19 | A kind of torque sensor thick film circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720077300.9U CN206402526U (en) | 2017-01-19 | 2017-01-19 | A kind of torque sensor thick film circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206402526U true CN206402526U (en) | 2017-08-11 |
Family
ID=59519825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720077300.9U Active CN206402526U (en) | 2017-01-19 | 2017-01-19 | A kind of torque sensor thick film circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206402526U (en) |
-
2017
- 2017-01-19 CN CN201720077300.9U patent/CN206402526U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9377491B2 (en) | Shunt resistor based current sensor | |
| US8704514B2 (en) | Current sensor including a sintered metal layer | |
| WO2006007078A8 (en) | Force sensing resistor with calibration element | |
| KR20050001314A (en) | Resistor arrangement, producing method, and measuring circuit | |
| CN202886007U (en) | Contact type temperature sensing device | |
| WO2009057332A1 (en) | Circuit connecting method | |
| CN107785526A (en) | Electrokinetic cell integration module | |
| JP4260864B2 (en) | Road strain measurement device | |
| WO1999067653A1 (en) | Layered current sensor | |
| CN206402526U (en) | A kind of torque sensor thick film circuit board | |
| JP2008277743A5 (en) | ||
| CN206402536U (en) | A kind of New-type Torque Sensor thick film circuit board | |
| CN206402525U (en) | A kind of EPS torque sensor signals plate | |
| JP2009218317A (en) | Surface-mounted resistor, and its manufacturing method | |
| CN110398295A (en) | Connection component with temperature-detecting device | |
| WO2021123348A1 (en) | Aerosol generation device and consumable article with thermal properties recognition | |
| CN206796853U (en) | A kind of thermal printing head that can detect protective layer heavy wear | |
| CN109975614B (en) | Four-wire current sensing resistor and measuring method thereof | |
| CN208094904U (en) | Multilayer stacking type precision pcb board | |
| CN1157595C (en) | Compensating element for a sensor | |
| CN205919856U (en) | Acceleration, amplitude detecting system | |
| CN204560028U (en) | There is the printed circuit board of embedding resistance | |
| CN102878915B (en) | Detect the method and apparatus of assembling position of screw on printed circuit board | |
| WO2008087976A1 (en) | Printed wiring board and method for manufacturing the same | |
| TWM446327U (en) | Temperature sensing device of contact type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |