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WO2008122465A1 - Unité de raccordement pour cellule de mesure de pression - Google Patents

Unité de raccordement pour cellule de mesure de pression Download PDF

Info

Publication number
WO2008122465A1
WO2008122465A1 PCT/EP2008/052233 EP2008052233W WO2008122465A1 WO 2008122465 A1 WO2008122465 A1 WO 2008122465A1 EP 2008052233 W EP2008052233 W EP 2008052233W WO 2008122465 A1 WO2008122465 A1 WO 2008122465A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
contact
counterpart
contact plate
measuring cell
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
Application number
PCT/EP2008/052233
Other languages
German (de)
English (en)
Inventor
Harry Kaiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to CN2008800113407A priority Critical patent/CN101652646B/zh
Priority to EP08709199A priority patent/EP2137506A1/fr
Priority to KR1020097020748A priority patent/KR101396170B1/ko
Publication of WO2008122465A1 publication Critical patent/WO2008122465A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0061—Electrical connection means
    • G01L19/0069—Electrical connection means from the sensor to its support
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0061—Electrical connection means
    • G01L19/0084—Electrical connection means to the outside of the housing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/142—Multiple part housings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/148—Details about the circuit board integration, e.g. integrated with the diaphragm surface or encapsulation

Definitions

  • the invention relates to a connection unit for a pressure measuring cell according to the preamble of the independent claim.
  • a valve with integrated pressure sensor is already known from DE 10 2004 033 846 A1.
  • the pressure sensor is integrated in the valve dome so that no further mounting and holding elements are necessary.
  • the pressure of the hydraulic fluid is transferred to the measuring diaphragm of the measuring cell.
  • a printed circuit board a plurality of through holes are formed, through which the electrical contacts of the pressure sensor and / or the electrical part of the valve are passed. Contacting of the pressure sensor takes place for example via bonds.
  • connection unit for a pressure measuring cell has the advantage over the prior that the proposed connector is particularly low builds and thus no longer determining the height. This is achieved in particular by the fact that the plug is built around the pressure measuring cell or around a circuit carrier, so that the height of the pressure sensor can be fully utilized for the device plug.
  • On the circuit board is at least one circuit or at least one electronic component for Conditioning (filtering, signal amplification or the like) of at least one output signal of the pressure measuring cell.
  • At least one contact plate is provided for contacting. This makes it advantageous to realize the necessary axial tolerance range of the connection unit. Thus, production-related tolerances due to the internal structure, settings and adjustments of the solenoid valves can be easily compensated.
  • About the contact plate with the counterpart an electrical connection is made by sliding contact. As a result, any dirt particles are pushed aside by the contact partners when joining. This improves the electrical contact, for example, with respect to a point contact, as would be provided with spring pins on contact plate. In the abrasive type of contacting via a contact plate also a frictional corrosion of the contact is minimized.
  • the plug is of a sleeve-shaped construction and the contact plate is arranged on the outside of the plug, preferably on the cylindrical outer side of the plug. This again reduces the height of the installation space, since on the one hand the inner space can be used for receiving the circuit carrier, while the counterpart of the plug encloses this for contacting from the outside.
  • the plug has on its outer side at least one recess in which the contact plate is at least partially received.
  • Such a design of the plug can be realized inexpensively by an injection molded part, which is also characterized by compactness and secure attachment of the contact sheets.
  • the contact plate and plug can be connected together by hot caulking.
  • the contact plate comprises at least one spring tongue, which preferably has an embossing at the end.
  • a contact or conductive adhesive point of the circuit substrate is particularly simple and - due to the spring property - securely contacted, especially at a later permanent connection by means of conductive adhesive.
  • the plug has at least one opening through which the spring tongue is guided into the interior of the plug.
  • This arrangement is characterized by great compactness. Furthermore, this also improves the mechanical attachment of the contact plate on the plug.
  • a breakthrough or bore is provided at the top of the plug above the contact spring. About this hole, a hot stamping die could be supplied in the connection of the contact spring with the circuit carrier by means of conductive adhesive, so that a second-rapid curing of the connection is possible.
  • the upper side of the plug is provided with at least one chamfer and / or at least one groove.
  • the chamfer serves as a joining aid, for example when mounting an attachment control unit on a hydraulic block. Thanks to the groove, the production of the connector can be optimized because the connector can be brought using the groove, for example in a vibrator in a defined mounting position.
  • Circuit carrier interacts. This facilitates the assembly of the overall arrangement and contributes to a fixed mechanical and positionally accurate connection.
  • connection unit for a pressure measuring cell An embodiment of the connection unit for a pressure measuring cell is shown in the drawing and will be described in more detail below.
  • connection unit consisting of plug and counterpart, arranged on a valve
  • FIG. 2 is a perspective view of the plug
  • FIG. 3 shows the sensor electronics covered by the plug
  • FIG. 4 shows the components of the plug
  • FIG. 5 shows another view of the carrier of the plug
  • FIG. 6 shows a first sectional view of the plug in cooperation with the pressure measuring cell
  • FIG. 7 shows a sectional view of the same arrangement rotated by 90 degrees with respect to the sectional illustration according to FIG. 6;
  • Figure 8 is a perspective view of the connector receiving the counterpart.
  • An unspecified valve block for example for controlling a brake system in a motor vehicle, has a plurality of valves 16.
  • a pressure measuring cell 14 is arranged on these valves 16 to detect a pressure of the fluid controlled by the respective valve 16.
  • a connection unit 10 is provided, which consists of a counterpart 80 and a plug 40 releasably connected therein.
  • the counterpart 80 is preferably aligned on the coil shell or in the alternative coil design on the coil bottom of the valve 16.
  • Alternative An orientation on the winding carrier of the valve 16 would also be possible.
  • the counterpart 80 is connected via the contact lugs 82 with the lead frame 84 for contacting the processing electronics. Alternatively, however, it would also be possible to connect to the processing electronics via flexible cables.
  • the plug 40 is shown in more detail.
  • the plug 40 is preferably cylindrical or cap-shaped. In the circumferential direction of the plug 40 has four upwardly open, but closed to the inside preferably rectangular recesses 55, which serve to accommodate the geometry of the recess 55 matched contact plates 56. These contact plates 56 are subsequently pushed onto the plug 40 and secured by hot caulking 58.
  • the plug 40 is arranged above a circuit carrier 20.
  • the substantially square-shaped circuit carrier 20 is equipped, for example, with an integrated circuit 24 and electronic components 26.
  • the integrated circuit 24 and the electronic components 26 are electrically contacted via electrical connections 27 with connection points 18 of a measuring bridge 19 of the pressure measuring cell 14.
  • the contacting of the electrical connections 27 with the respective connection points 18 is preferably carried out by means of conductive adhesive.
  • the output signals of the integrated circuit 24 and the electronic components 26 are supplied by electrical connections 27 four Leitkleberddlingen 30.
  • the conductive adhesive points 30 are arranged on the upper side of the circuit carrier 20 and are separated from each other by webs 54 oriented in the axial direction.
  • the circuit carrier 20 is embodied, for example, as an injection-molded part in so-called MID technology (Molded Interconnect Device).
  • Opposing latching lugs 52 are located on the two side surfaces of the circuit carrier 20. These latching lugs 52 cooperate with two openings 68 of the plug 40 in order to support a position-defined connection between circuit carrier 20 and plug 40.
  • the plug 40 is pushed onto the circuit carrier 20 until the latching lugs 52 engage in the openings 68.
  • the inner contour of the plug 40 is matched to the outer contour of the circuit carrier 20 with circuits 24 or electronic components 26 arranged thereon.
  • recesses 74 are provided in the plug 40 for receiving the webs 54 of the circuit substrate 20.
  • an inner groove 76 is provided in each case in the interior of the carrier 50 for receiving the side surfaces of the circuit carrier 20.
  • a recess 76 creates additional space for the components 26 or integrated circuit 24 arranged on the circuit carrier 20.
  • the contact plate 56 which is matched to the recess 55, has in the upper, middle section a relation to the substantially rectangular, curved contact surface by 90 ° bent spring tongue 60 with an embossing 62 at the end.
  • the geometry of the spring tongue 60 with embossing 62 is designed so that the embossing 62 rests on the associated Leitkleberddling 30 in the mounted state.
  • the webs 54 of the circuit substrate 20 prevent corresponding short circuits in Leitkleber kau.
  • the contact tongues 56 between the circuit board 20 and connector 40 can be additionally glued with conductive adhesive and with a hot stamping punch through the located at the top of the carrier 50 holes 65 of the Plug 40 can be cured quickly.
  • the spring tongues 60 reach the interior of the plug 40.
  • the plug 40 furthermore has two parallel grooves 66 on its surface.
  • the chamfer 64 which runs around at the upper outer edge of the plug 40, serves as a joining aid when an attachment control device is mounted on the hydraulic block, the components of which are the valves 16.
  • the relatively sharp-edged solenoid coil in the attachment control unit must first be pushed over the pressure sensor.
  • FIG. 6 shows the interaction between plug 40 and circuit carrier 20 even more precisely.
  • the spring tongues 60 pass over the upper opening 70 in the plug 40 to the conductive adhesive point 30 to be contacted.
  • the electrical contact between the contact sheet 56 and the conductive adhesive point 30 is produced by conductive adhesive.
  • Above the Leitkleberddling 30 is the bore 65th arranged.
  • the recess 76 provides sufficient space for the electronic components 26 and the integrated circuit 24.
  • the circuit carrier 20 is mechanically and electrically connected to the pressure measuring cell 14. As a result, the electrical signals of the measuring bridge 19 are forwarded via the electrical connections 27 to the respective electronic components 26 or integrated circuits 24 and their output signals to the conductive adhesive points 30.
  • the voltage applied to the Leitkleberddlingen 30 electrical signals can be tapped on the contact plates 56.
  • FIG. 7 also shows how the latching lugs 52 of the circuit carrier 20 interact with the apertures 68.
  • the counterpart 80 is explained in detail.
  • the counterpart 80 is designed sleeve-shaped, wherein the inner contour is designed substantially cylinder-shaped.
  • the outer contour of the counterpart 80 has an octagonal structure.
  • Each second of the octagonal outer surface of the counterpart 80 has a recess 87 which terminates laterally in the axial direction in two opposite guide slots 88.
  • Recesses 87 and associated guide slots 88 serve to receive a respective contact lug 82.
  • the upper portion of the contact lug 82 is received by the guide slots 88.
  • inner contact springs 84 are provided, which cooperate with the contact plates 56 of the plug 40.
  • the width of the contact lug 82 decreases toward the end of the upper region, is bent by 90 ° and projects outward in the radial direction.
  • the pressure measuring cell 14 is positioned on the pole core of the valve 16.
  • the valve 16 may be part of a hydraulic block, which in turn is part of a brake system of a motor vehicle. This arrangement can be used, in particular, in the case of antilock braking systems or electronic stability systems.
  • the pressure measuring cell 14 has a measuring bridge 19, which is based on the
  • Measuring bridge 19 or pressure measuring cell 14 have, for example, four electrical connection points 18.
  • the electrical signals present at the connection points 18 must be tapped off and processed in a particularly compact form in order to supply them to further processing control devices.
  • connection unit 10 In addition to a high degree of miniaturization, the connection unit 10 must also meet high tolerance requirements (primarily with regard to the length and obliquity of the valve 16). Furthermore, the fretting corrosion of the electrical contact should be minimized.
  • the separability of the additional controller is achieved by the pump housing.
  • the counterpart 80 on the valve spool preferably on the coil shell or in alternative coil design on the coil bottom.
  • the counterpart 80 could also be aligned on the winding carrier.
  • the counterpart 80 could also be designed as a cap, d. H. it could also be done up close.
  • the contacting of the contact lugs 82 for further processing electronics via the coil punching grid 84.
  • a possibly necessary tolerance compensation can be additionally provided via a meandering 85 in the coil punching grid 84.
  • a connection through flexible cables would be possible.
  • the inner diameter of the counterpart 80 is dimensioned such that the pressure measuring cell 14 or measuring bridge 19 and circuit carriers arranged thereon
  • the substantially cylindrical inner diameter of the counterpart 80 is used to receive the plug 40.
  • the device plug 40 with mounted contact plates 56 is brought into engagement with the side surfaces of the circuit carrier 20 via the inner groove 66 until the two latching plates engage.
  • sen 52 of the circuit substrate 20 in the openings 68 of the plug 40 engage.
  • the webs 54 of the circuit substrate 20 find space and thereby prevent a short circuit between the Leitkleber Vietnameseen 30 in the contacting of the electrical connections 27 with the respective Leitkleberddlingen 30 by conductive adhesive, such as silver conductive adhesive.
  • Spring tongues 60 with embossings 62 of the contact plates 56 press resiliently onto the circuit carrier 20.
  • the contact surface 56 between the circuit carrier 20 and plug 40 can be additionally glued with conductive adhesive and cured with a hot stamping die through the bore 65 of the plug 40. In order to perform the plug 40 directed to the assembly, are on the
  • Top provided the two grooves 66.
  • the plug 40 can thereby take targeted in the vibrator to a desired, defined position (mounting position).
  • Plug 40 and counterpart 80 are connected to each other by the plug 40 passes into the interior of the receiving means 80.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Fluid Pressure (AREA)
  • Magnetically Actuated Valves (AREA)
  • Regulating Braking Force (AREA)

Abstract

Unité de raccordement (10) pour cellule de mesure de pression (14), comprenant au moins un connecteur (40) pourvu d'au moins une plaque de contact (56) qui est orientée sensiblement dans l'axe du connecteur (56) et qui permet de capter au moins un signal électrique influencé par la cellule de mesure de pression (14), la plaque de contact (56) étant conçue de manière à permettre au moins une compensation de tolérance axiale avec un élément de contact (86) d'une pièce antagoniste (80) enfichable. Un espace intérieur du connecteur (40) sert au moins partiellement à recevoir un support de circuit (20) sur lequel est monté au moins un circuit (24) ou au moins un élément électronique (26) destiné à générer au moins un signal de sortie de la cellule de mesure de pression (14).
PCT/EP2008/052233 2007-04-05 2008-02-25 Unité de raccordement pour cellule de mesure de pression Ceased WO2008122465A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008800113407A CN101652646B (zh) 2007-04-05 2008-02-25 用于压力测量单元的连接单元
EP08709199A EP2137506A1 (fr) 2007-04-05 2008-02-25 Unite de raccordement pour cellule de mesure de pression
KR1020097020748A KR101396170B1 (ko) 2007-04-05 2008-02-25 압력 측정 셀용 연결 유닛

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007016474.4 2007-04-05
DE102007016474A DE102007016474A1 (de) 2007-04-05 2007-04-05 Anschlusseinheit für eine Druckmesszelle

Publications (1)

Publication Number Publication Date
WO2008122465A1 true WO2008122465A1 (fr) 2008-10-16

Family

ID=39636848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/052233 Ceased WO2008122465A1 (fr) 2007-04-05 2008-02-25 Unité de raccordement pour cellule de mesure de pression

Country Status (5)

Country Link
EP (1) EP2137506A1 (fr)
KR (1) KR101396170B1 (fr)
CN (1) CN101652646B (fr)
DE (1) DE102007016474A1 (fr)
WO (1) WO2008122465A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009007286A3 (fr) * 2007-07-10 2009-02-26 Bosch Gmbh Robert Unité de raccordement pour une cellule de mesure de pression

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011085471B4 (de) * 2011-10-28 2021-09-16 Robert Bosch Gmbh Anordnung zur Direktkontaktierung von Kontaktmitteln und zugehörige Anschlusseinheit für eine Druckmesszelle
DE102012204911B4 (de) * 2012-03-27 2024-09-19 Robert Bosch Gmbh Stützeinheit für eine Leiterplatte in einer Sensoreinheit und korrespondierende Sensoreinheit
KR102273713B1 (ko) * 2014-11-05 2021-07-06 주식회사 만도 압력센서
DE102016210550B4 (de) * 2016-06-14 2020-08-13 Robert Bosch Gmbh Sensorvorrichtung und Verfahren zur Herstellung einer Sensorvorrichtung
DE102016214940A1 (de) * 2016-08-11 2018-02-15 Robert Bosch Gmbh Druckmesszelle und Verfahren zum Aufbringen einer Messstruktur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001934A (en) * 1990-01-02 1991-03-26 Walbro Corporation Solid state pressure sensor
DE19703206A1 (de) * 1997-01-29 1998-07-30 Siemens Ag Drucksensor-Bauteil mit Schlauchanschluß
DE19917941A1 (de) * 1999-04-21 2000-10-26 Bosch Gmbh Robert Bremsgerät für Fahrzeugbremssysteme

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5087912A (en) * 1990-01-31 1992-02-11 Westinghouse Electric Corp. Universal pressure measurement interface
DE19637763A1 (de) * 1996-09-16 1998-03-19 Trw Fahrzeugelektrik Drucksensoreinheit, insbesondere für die Kraftfahrzeugtechnik
DE10014992C2 (de) * 2000-03-25 2002-01-31 Bosch Gmbh Robert Sensoranordnung
DE102004033846A1 (de) 2004-07-13 2006-02-09 Robert Bosch Gmbh Ventil mit integriertem Drucksensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001934A (en) * 1990-01-02 1991-03-26 Walbro Corporation Solid state pressure sensor
DE19703206A1 (de) * 1997-01-29 1998-07-30 Siemens Ag Drucksensor-Bauteil mit Schlauchanschluß
DE19917941A1 (de) * 1999-04-21 2000-10-26 Bosch Gmbh Robert Bremsgerät für Fahrzeugbremssysteme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009007286A3 (fr) * 2007-07-10 2009-02-26 Bosch Gmbh Robert Unité de raccordement pour une cellule de mesure de pression
US8104357B2 (en) 2007-07-10 2012-01-31 Robert Bosch Gmbh Connection unit for a pressure measuring cell

Also Published As

Publication number Publication date
DE102007016474A1 (de) 2008-10-09
KR20090127908A (ko) 2009-12-14
CN101652646A (zh) 2010-02-17
EP2137506A1 (fr) 2009-12-30
CN101652646B (zh) 2012-05-02
KR101396170B1 (ko) 2014-05-19

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