EP3899436A1 - Verbindungstechnologie ultrasonic welding bei der produktlinie raddrehzahlsensorik - Google Patents
Verbindungstechnologie ultrasonic welding bei der produktlinie raddrehzahlsensorikInfo
- Publication number
- EP3899436A1 EP3899436A1 EP19835264.3A EP19835264A EP3899436A1 EP 3899436 A1 EP3899436 A1 EP 3899436A1 EP 19835264 A EP19835264 A EP 19835264A EP 3899436 A1 EP3899436 A1 EP 3899436A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leadframe
- sensor
- contact
- lead frame
- sensor according
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
Definitions
- the invention relates to a sensor according to the preamble of claim 1.
- the invention is based on the object of proposing an inexpensive and / or reliable sensor, in particular with regard to its contacting or
- Connection means the connection between the first leadframe contact of the first leadframe with the first leadframe contact of the second leadframe or with a first cable strand
- Leadframe contact of the second leadframe or with a second cable strand is provided.
- the first leadframe has at least in a first region two changes in direction in its extent, which together comprise at least 90 °.
- the sensor is preferably a speed sensor and / or speed sensor and / or angular speed sensor
- crankshaft speed sensor or wheel speed sensor or transmission speed sensor
- the first lead frame is designed such that at least with regard to its first and second
- the first and second contacting legs each have at least in a first region two changes in direction in their extent, which in particular together comprise at least 90 °.
- no further contacting is formed at the end of the second change in direction of the first or contacting leg.
- this second change in direction is arranged essentially in the form of a flag on the side of the first or second contacting leg.
- a leadframe contact is understood to mean, for example, a contact leg or contact leg end or a corresponding contact area on a contact leg.
- a welding surface is preferably also a
- the sensor preferably has the advantage that it avoids the wirebond wires, and possibly also, the ultrasound entry during ultrasound welding
- the two welded connections are preferably or are produced at the welded points simultaneously, so that the Vibration energy is introduced only once by ultrasonic welding.
- the welding tool has a common tool head for both lead frame contacts or. Branches on.
- the invention also relates to a method for producing a sensor by means of ultrasonic welding.
- the sensor element is preferably designed as a GMR sensor element or TMR sensor element, because this is relatively robust against vibrations.
- the sensor element is preferably designed as a Hall element.
- the first leadframe preferably points in the area of the leadframe contacts or in the adjacent area
- Leadframe contacts one damping tile each.
- connection are preferably clamped or fixed with the fleece in the welding tool during the ultrasonic welding process or manufacturing process.
- the welding tool has an actuator, gripper, which holds or holds down the fleece / damping mat on the holding surface.
- the damping fleece or fleece or the damping mat is preferably made of rubber or of elastic plastic.
- the sensor housing is expediently held in a tool pocket of the welding tool or received by the latter and in particular is not clamped.
- the leadframe in the area of its first and second leadframe contacts each have a trough into which the respective strand of the cable is inserted and / or protrudes.
- the trough is in particular designed in such a way that the first and second contacting legs at this point, respectively is wider and before and after the trough, in the direction of the leadframe from the contact to the sensor element, is the first leadframe or the respective contacting leg
- the first leadframe preferably has a hammer-shaped or flag-shaped structure, at the end of which in particular no contact is arranged.
- Lead frame guidance and training are preferably reduced influences of the ultrasound introduction on the function of the sensor element. Furthermore, delamination of the lead frames in the plastic housing is limited to a minimum.
- the first leadframe preferably includes one or more kinks or in the direction into the first plastic housing
- the first leadframe preferably comprises, in particular in each case on its first and second contacting legs, at least one, in particular two anchor holes, which are from the first
- the defined material for the enclosing plastic housing is preferably also optimized with regard to the introduction of ultrasound.
- the anchor holes in the terminal serve to position the sensor element and also to deflect the
- the sensor In the production process or when welding a cable strand, it is preferably placed without pressure on the associated leadframe contact. A defined pressure is only built up by contacting the ultrasound tool.
- the sensor preferably has a capacitor which is soldered between two leadframe branches or the first and second contacting legs.
- the sensor preferably does not include an intermediate piece leadframe, between the cable or plug, the contacts of which are formed by the second leadframe, and the first leadframe.
- the cable is formed with a diameter of 0.08 mm to 0.154 mm of the individual wires of the strands.
- the strands of the cable expediently each have a cross section of 0.5 mm A 2 or 0.35 mm A 2 or 0 , 25mm A 2.
- the invention also relates to the use of the sensor in motor vehicles.
- Fig. 1 shows an exemplary contacting of the sensor
- Fig. 2 shows an embodiment of the sensor with a
- Sensor 1 is connected to cable 2 and its strands 2a and 2b.
- Sensor 1 has a first plastic housing 3.
- the first and second contacting legs 4, 5 are connected to the strands by means of a first and second leadframe contact 6, 7 by an ultrasonic welding surface.
- the exemplary embodiment of sensor 1 in FIG. 2 shows a first lead frame 8 with first and second contacting legs 4, 5.
- ASIC 9 comprising the sensor element and the signal processing circuit, is arranged on first lead frame 8.
- Protective capacitor 10 is located between the two contacting legs 4 and 5 arranged and fixed by solder connection.
- the first and second contacting legs each have a first 11, 12 and second 13, 14 change in direction.
- the first lead frame on both contacting legs 4, 5 each has outwardly arranged flags or hammer elements 15 and in each case 2 anchor holes 16, which extend from the first plastic housing 3
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018222851 | 2018-12-21 | ||
| PCT/EP2019/085550 WO2020127197A1 (de) | 2018-12-21 | 2019-12-17 | Verbindungstechnologie ultrasonic welding bei der produktlinie raddrehzahlsensorik |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3899436A1 true EP3899436A1 (de) | 2021-10-27 |
Family
ID=69156365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19835264.3A Ceased EP3899436A1 (de) | 2018-12-21 | 2019-12-17 | Verbindungstechnologie ultrasonic welding bei der produktlinie raddrehzahlsensorik |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3899436A1 (de) |
| CN (1) | CN216483147U (de) |
| WO (1) | WO2020127197A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1813165A1 (de) * | 1967-12-15 | 1969-07-03 | Motorola Inc | Verfahren zum Befestigen von Leitungsverbindungen an elektronischen Schaltelementen |
| DE102008064046A1 (de) * | 2008-10-02 | 2010-04-08 | Continental Teves Ag & Co. Ohg | Verfahren zur Herstellung eines Geschwindigkeits-Sensorelementes |
| DE102014212720A1 (de) * | 2013-07-01 | 2015-01-08 | Continental Teves Ag & Co. Ohg | Sensor mit abdichtender Beschichtung |
| EP3246666A1 (de) * | 2016-05-19 | 2017-11-22 | Jtekt Corporation | Sensoreinheit und magnetismussammelmodul und sensorvorrichtung |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5655826B2 (ja) * | 2012-08-24 | 2015-01-21 | 株式会社デンソー | 回転検出装置およびその製造方法 |
| JP5934618B2 (ja) * | 2012-09-14 | 2016-06-15 | 矢崎総業株式会社 | 端子金具 |
| DE102014213588A1 (de) * | 2014-07-11 | 2016-02-18 | Continental Teves Ag & Co. Ohg | Kundenspezifischer Sensor hergestellt durch Dreifach-Molden |
| DE102015224257A1 (de) * | 2015-12-03 | 2017-06-08 | Continental Teves Ag & Co. Ohg | Elektrische Leiterbahn, Verfahren und Verwendung |
-
2019
- 2019-12-17 CN CN201990001239.7U patent/CN216483147U/zh active Active
- 2019-12-17 EP EP19835264.3A patent/EP3899436A1/de not_active Ceased
- 2019-12-17 WO PCT/EP2019/085550 patent/WO2020127197A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1813165A1 (de) * | 1967-12-15 | 1969-07-03 | Motorola Inc | Verfahren zum Befestigen von Leitungsverbindungen an elektronischen Schaltelementen |
| DE102008064046A1 (de) * | 2008-10-02 | 2010-04-08 | Continental Teves Ag & Co. Ohg | Verfahren zur Herstellung eines Geschwindigkeits-Sensorelementes |
| DE102014212720A1 (de) * | 2013-07-01 | 2015-01-08 | Continental Teves Ag & Co. Ohg | Sensor mit abdichtender Beschichtung |
| EP3246666A1 (de) * | 2016-05-19 | 2017-11-22 | Jtekt Corporation | Sensoreinheit und magnetismussammelmodul und sensorvorrichtung |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2020127197A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN216483147U (zh) | 2022-05-10 |
| WO2020127197A1 (de) | 2020-06-25 |
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