WO2022053100A1 - Steuerungseinheit mit kontaktierungs-konzept für eine massenanbindung - Google Patents
Steuerungseinheit mit kontaktierungs-konzept für eine massenanbindung Download PDFInfo
- Publication number
- WO2022053100A1 WO2022053100A1 PCT/DE2021/100677 DE2021100677W WO2022053100A1 WO 2022053100 A1 WO2022053100 A1 WO 2022053100A1 DE 2021100677 W DE2021100677 W DE 2021100677W WO 2022053100 A1 WO2022053100 A1 WO 2022053100A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control unit
- housing
- screw
- bridging element
- receiving hole
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/06—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for removing electrostatic charges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0239—Electronic boxes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
- H05K7/1427—Housings
Definitions
- the invention relates to a control unit for a motor vehicle, preferably a control unit for controlling an actuator.
- the invention relates to a drive module for actuating a parking lock of a motor vehicle, with this control unit.
- control unit that is as simple as possible in its design and can be produced with little manufacturing effort, but at the same time ensures a reliable electrical connection of its electronic components when mounted on the vehicle.
- control unit for a motor vehicle, such as a car, truck, bus or other commercial vehicle, is claimed, which control unit is equipped with a housing and at least one electronic component accommodated in the housing.
- the housing is further provided with at least one screw receiving hole for receiving a fastening screw.
- an existing (electrically conductive) metal to a mass connection of the at least one electronic bridging element used as part of the component is present, which bridging element is electrically conductively connected to the electronic component with a first end area arranged within the housing and is arranged with a second end area that is resiliently deformable along the screw receiving hole in a contact area provided for the axial support of a screw head of the fastening screw.
- This bridging element implements a simple and direct connection of the corresponding electronic components of the control unit to a vehicle ground via a fastening screw.
- the resilient design of the second end area ensures that this mass connection is robust over as long an operating period as possible.
- the housing preferably consists (at least partially) of an electrically non-conductive/non-conductive material, particularly preferably of a plastic.
- the bridging element thus advantageously penetrates the housing made of the non-conductive material/plastic. As a result, the housing can be produced as efficiently as possible.
- the bridging element is fixed in the housing by injection molding and/or by means of a mechanical fixing element, the bridging element is positioned precisely and thus there is a reliable mass connection.
- the screw receiving hole is formed/enclosed by a metallic support sleeve that is firmly accommodated in the housing and the bridging element is arranged in such a way that the second end region protrudes axially beyond the support sleeve. This ensures that the fastening screw in the fastened state rests securely and sufficiently firmly on the bridging element.
- the second end region is equipped with an elongated hole running transversely to a longitudinal direction of the screw receiving hole. In principle, the elongated hole can be open or closed on one side in the transverse direction. As a result, the spring elasticity of the bridging element can be adjusted as desired in a simple manner.
- the second end area is eyelet-shaped, hook-shaped or S-shaped.
- Such geometries that ensure spring elasticity can be produced as simply as possible, preferably by means of a stamping process.
- the bridging element is formed from a metal sheet with a uniform sheet thickness, production is further simplified.
- the second end area is designed in such a way that it can be further elastically compressed when the screw head is supported flatly on the bearing area, the mass connection is ensured even when the position of the fastening screw changes during operation.
- the electronic component is designed as a printed circuit board or is arranged on this printed circuit board, the entire printed circuit board is also connected directly to a ground of the motor vehicle.
- the invention relates to a drive module for a parking lock actuation of a motor vehicle with a control unit according to the invention according to at least one of the embodiments described above and an electric motor connected to the control unit.
- the electric motor is further preferably in turn coupled to a corresponding actuator system, preferably a mechanical actuator system.
- connection unit a compact control unit (control unit) with a plastic housing. It is preferably an integrated control unit, e.g. B. in an integrated parking lock actuator.
- a corresponding ground pin is proposed here, which connects the fastening screw of the housing to a conductive part of the circuit board (PCB / Printed Circuit Board).
- the ground pin has a PCB contact point (first end area) with a press-in zone and a screw contact point with an elastically deformable zone (second end area).
- PCB contact point first end area
- second end area an elastically deformable zone
- FIG. 1 is a perspective view of a control unit according to a preferred embodiment of the invention, with a cover of a housing of the control unit hidden so that a printed circuit board with electronic components mounted therein and its basic coupling with a bridging element that extends to a fastening screw arranged in a receiving hole , are recognizable
- FIG. 2 shows a perspective view of the control unit, similar to FIG.
- FIG. 3 shows a detailed view of the area of the bridging element marked III in FIG. 2,
- FIG. 4 shows a perspective representation of the control unit according to FIG. 1 in a sectioned state, the cover of the housing also being shown in comparison to FIG.
- FIG. 5 shows a perspective representation of the control unit according to FIG. 4 in a full view
- FIG. 6 shows a perspective view of the control unit, similar to FIG. 2, the control unit being cut in such a way that the course of the bridging element within the housing can be seen,
- FIG. 7 shows a detailed view of the bridging element in the control unit according to FIG. 6, a (second) end area of the bridging element facing the screw receiving hole being visible,
- FIG. 8 shows another perspective view of the control unit in the area of the bridging element, the control unit now being sectioned in such a way that a (first) end area of the bridging element that is further connected to the printed circuit board can be seen,
- FIG. 10 shows a detailed view of the control unit, similar to FIG. 7, with a fastening screw being inserted in the screw receiving hole and resting on the second end area of the bridging element
- FIG. 11 shows a view of the area of the control unit shown with FIG. 10 in a sectional plane
- Fig. 12 is a perspective view of the in Figs. 1 to 11 used bridging element, which is implemented according to a first variant
- FIG. 13 shows a perspective representation of the bridging element according to a second variant, in which the second end region is implemented in the form of a hook
- FIG. 14 shows a perspective representation of the bridging element according to a third variant, in which the second end region is implemented in an S-shape.
- the figures are only of a schematic nature and serve exclusively for understanding the invention. The same elements are provided with the same reference numbers.
- control unit 1 is directly integrated in a drive module 15 or the control unit 1 forms the drive module 15 directly.
- the control unit 1 forms control electronics for an electric motor 16 of the drive module 15 and is therefore electrically connected to it.
- the electric motor 16 as shown in FIG. 4, is accommodated together with the control unit 1 in a common housing 2.
- the electric motor 16 also interacts with a spindle drive 20 , which spindle drive 20 directly forms a mechanical actuator 17 of the drive module 15 .
- this actuator system 17 During operation of a motor vehicle, further components in a motor vehicle drive train can be controlled/actuated by this actuator system 17 .
- a drive module 15 for a parking lock/parking lock actuator system in order consequently to engage or disengage a parking lock of the motor vehicle.
- the drive module 15 is thus designed as a parking lock actuator.
- the control unit 1/the drive module 15 is used to actuate other components.
- the housing 2 of the control unit 1 is made of plastic.
- the housing 2 essentially has two components: a trough-shaped main part 18 and a cover 19 placed on the main part 18.
- the cover 19 is accommodated on the main part 18 in such a way that an interior space 23 of the housing 2 is hermetically sealed off from the environment 24 .
- the main part 18 has a completely circumferential receiving contour 22 on its side/front facing the cover 19, which is formed by an outer wall 21.
- the receiving contour 22 runs in one plane.
- the cover 19 is supported on the outer wall 21/the main part 18 via a seal (solid seal) which is provided separately and is not shown in detail for the sake of clarity.
- another seal such as an adhesive seal, is also present, or a material connection (preferably as a laser welded connection) of the cover 19 to the main part 18 is implemented.
- Both the lid 19 and the body 18 are molded/made from a plastic.
- the bridging element 6 is arranged in the area of a screw receiving hole 4 .
- the screw receiving hole 4 is a through hole (penetrating the housing 2) which serves to receive a fastening screw 5 when it is mounted on the vehicle.
- the screw receiving hole 4 is reinforced by a metallic support sleeve 11 or is formed directly by this support sleeve 11 .
- the support sleeve 11 thus defines the axial length of the screw-receiving hole 4.
- the screw-receiving hole 4 is arranged outside of the interior space 23 when viewed in relation to the outer wall 21.
- the bridging element 6 consequently extends from the interior space 23 towards the screw receiving hole 4/a surrounding area 24 of the housing 2.
- the bridging element 6 has on its side arranged in the interior 23 a first end region 7 which is also shown in detail in FIG. 8 .
- This first end region 7 is designed as a so-called press pin 25 which can be resiliently compressed in the transverse direction.
- This press pin 25 is in a conventional manner in one Contact area 30 of the printed circuit board 14 is inserted in the assembled state, converting an electrical contact with an electronic component 3/the printed circuit board 14.
- the bridging element 6 On a side facing away from the first end area 7, which faces the screw-receiving hole 4, the bridging element 6 has a second end area 8, which is specifically designed to be resilient/resiliently flexible (FIGS. 7 and 9).
- the second end area 8 is arranged in a support area 10 for the fastening screw 5/a screw head 9 of the fastening screw 5 in such a way that the screw head 9 when the control unit 1 is mounted on the vehicle side is attached both to the support sleeve 11 and to the second end region 8 is applied.
- this second end region 8 is specifically designed to be resilient in a longitudinal direction of the screw receiving hole 4 .
- the elasticity of the second end area 8 is implemented in such a way that this second end area 8 is (theoretically) flexible by a further distance/spring travel even when the screw head 9 rests on the support sleeve 11.
- the second end area 8 is then (already compressed by a certain spring deflection) in contact with the screw head 9.
- contact with the fastening screw 5 is always ensured even if the control unit 1 is used for a longer period of time.
- an axial end face of the second end area 8 consequently protrudes over the further support area 10 Shape of the support sleeve 11 also.
- the fastening screw 5 When mounted on the vehicle, the fastening screw 5 is screwed into another housing (not shown for the sake of clarity), for example a clutch housing, a transmission housing or an engine housing, and is consequently electrically connected to another vehicle ground.
- another housing for example a clutch housing, a transmission housing or an engine housing
- the second end region 8 is provided with a slot 12 running transversely to the longitudinal direction of the screw receiving hole 4, which directly enables the required spring elasticity.
- the bridging element 6 is formed from a metal sheet 13 of constant thickness, so that the second end region 8 can be elastically compressed as evenly as possible.
- the bridging element 6 is preferably produced in a stamped manner and has a thickness of 0.6 mm to 0.8 mm.
- the usual material of the bridging element 6 is CuSn6 or CuNiSi.
- the bridging element 6 in its intermediate area 26 running between the first end area 7 and the second end area 8 is directly accommodated by the plastic material of the housing 2 / surrounded by it.
- This plastic material is in tight (liquid-tight and more preferably also airtight) contact with the bridging element 6 in the intermediate area 26 so that the gap between the bridging element 6 and the housing 2 is sealed off from the environment 24 .
- the intermediate area 26 is essentially U-shaped.
- the bridging element 6 is preferably fixed directly in the housing 2 in a primary shaping process, ie an injection molding process of the housing 2 .
- the bridging element 6 In order to position the bridging element 6 more precisely, it has an alignment hole 27 in that U-shaped intermediate area 26 . This alignment hole
- the fixing element 27 interacts with a mechanical fixing element during the manufacturing process and is held in the appropriate position.
- the fixing element it is also possible to implement the fixing element as an element that remains in the housing 2 after the primary shaping process.
- bridging element 6 is positioned at a distance from a connector area 28 (also referred to as the connector receiving area) with a plurality of individual contact pins 29 (arranged in a row). As a result, a mass connection is as independent as possible from this connector area
- FIG. 13 it can be seen that the elongated hole 12 forming the loop-shaped second end region 8 in FIG. 12 can also be open to one side, forming a hook shape.
- an S-shaped area is implemented as an alternative to this.
- the electronic module (control unit) is part of a drive unit for an actuator with a BLDC motor (electric motor 16), or as an independent control unit, which is spatially different from the corresponding actuator with a BLDC motor, or as some other electromechanical Actuator assembly is separated, which has a mass connection to a vehicle mass.
- This connection to the vehicle ground ensures the correct function of the actuator/control unit.
- the compactness of the actuator and the associated control unit is of great importance.
- a contact between a PCB (printed circuit board 14) and the vehicle ground is implemented in a robust manner.
- the compact control unit is mechanically attached to a corresponding interface in the vehicle (transmission housing, combustion engine, vehicle body, etc.) using a certain number of screw connections.
- Self-tapping screws fastening screws 5 are preferably used, which have relatively high screwing torques or can realize relatively high screw preloads.
- a mass connection between the PCB (PCB including components, referred to as the control unit of the actuator) and vehicle mass (e.g. transmission housing) is implemented by an extra pin (bridging element 6) with a press-fit zone (first end area 7).
- This pin is inserted at the same time as the connector pins (contact pins 29) during the overmoulding of housing 2 of the control unit, or, depending on the design and concept, is mounted in housing 2 together with the connector pins in a subsequent process.
- the pin with the press-fit zone / press-in zone is provided at the interface of the pin / ground pin in the direction of the PCB (ELO pin, NEO pin, etc.).
- the electrical contact between pin and PCB realized by a certain number of gas-tight zones with metal / metal contact.
- the mass pin has a zone (second end area 8) with reduced mechanical rigidity in order to keep the deformation forces relatively low when screwing/assembling the fastening screw 5 at the corresponding position, or the to facilitate deformation of the pin.
- the pins are stamped out of material with a thickness of 0.6mm to 0.8mm.
- the usual base material of the pin is CuSn6 or CuNiSi. This zone with reduced mech.
- Stiffness is dimensioned in such a way that after elastic-plastic deformation through the screwing process of the fastening screw 5, there is residual elasticity, so that the pin structure still guarantees the desired electrical contact between the pin and screw head by a specified residual force under geometric tolerances.
- metal sleeves support sleeve 11
- metal sleeves are usually used for the axial introduction of the screw preload force into the plastic housing.
- a circumferential sealing contour (receiving contour 22) can be seen in the electronics housing (housing 2). This contour is the separation between the electronics space and the environment.
- the plastic cover (cover 19) can be attached to the plastic housing (main part 18) by means of a solid seal, liquid seal (adhesive), or by means of a laser weld seam.
- the compact control unit would thus be completely hermetically sealed from the environment 24 .
- the ground pin runs within the plastic geometry of the electronics housing (requires an overmoulding process of the pin in the plastic housing).
- FIGS. The space-saving, compact and cost-effective integration of the ground pin is shown in FIGS.
- the stamped and bent pin is either overmoulded or mounted in the housing 2 after overmoulding. Shown here is the variant with an overmoulded pin.
- a good tightness of the electronics space in the housing 2 to the environment 24 e.g. tightness of the control unit according to IP6K9K class
- the pin should be overmoulded in this case.
- corresponding sealing interfaces must also be attached to the pin geometry at the corresponding positions in the tool.
- potting cavities (recesses for casting compound) should also be provided around the sealing interfaces of the ground pin.
- FIG. 12 shows a possible geometry of the deformable zone of the mass pin at the contact interface with the screw head 9 of the fastening screw 5 in detail.
- This elastic zone is to be implemented in such a way that after an elastic-plastic deformation in the axial direction (direction of the axial screw prestress when screwing), a residual defined contact force between the pin and the screw head 9 remains. This ensures the elastic contact between the PCB, the press-in zone of the pin and the fastening screw 5 of the control unit.
- the fastening screw 5 ensures the elastic contact to the vehicle ground by screwing the control unit to a metal part in the vehicle that is in contact with the vehicle ground using this screw (transmission housing, combustion engine, vehicle body, etc.).
- FIGS. 13 and 14 show geometric variants for the design of the contact zone with the screw head 9 with easier deformability/lower rigidity compared to the variant according to FIG.
- the deformable zone at the interface of the ground pin with screw contact is always implemented over the width of the pin in the punching direction, so that the corresponding sealing interface for sealing in the overmolding tool is implemented in a zone with a greater width.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Casings For Electric Apparatus (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237005652A KR20230041753A (ko) | 2020-09-14 | 2021-08-06 | 접지 연결을 위한 접촉 개념을 갖는 제어 유닛 |
JP2023513177A JP7490888B2 (ja) | 2020-09-14 | 2021-08-06 | アース接続のための接触コンセプトを有する制御ユニット |
CN202180052852.3A CN115916604A (zh) | 2020-09-14 | 2021-08-06 | 具有用于接地连接的接触构思的控制单元 |
US18/024,118 US20230276582A1 (en) | 2020-09-14 | 2021-08-06 | Control unit having a contacting concept for a ground connection |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020123816.9A DE102020123816B4 (de) | 2020-09-14 | 2020-09-14 | Steuerungseinheit mit Kontaktierungskonzept für eine Massenanbindung bei Umsetzen eines Kunststoffgehäuses; sowie Antriebsmodul |
DE102020123816.9 | 2020-09-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022053100A1 true WO2022053100A1 (de) | 2022-03-17 |
Family
ID=77447665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2021/100677 WO2022053100A1 (de) | 2020-09-14 | 2021-08-06 | Steuerungseinheit mit kontaktierungs-konzept für eine massenanbindung |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230276582A1 (de) |
KR (1) | KR20230041753A (de) |
CN (1) | CN115916604A (de) |
DE (1) | DE102020123816B4 (de) |
WO (1) | WO2022053100A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080035363A1 (en) * | 2006-08-10 | 2008-02-14 | Frank Shaochong Yan | Adjustable mud ring system |
US20140285986A1 (en) * | 2013-03-25 | 2014-09-25 | Denso Corporation | Electronic device for vehicle |
US20170305370A1 (en) * | 2014-09-24 | 2017-10-26 | Sumitomo Wiring Systems, Ltd. | Electrical junction box |
US20200112108A1 (en) * | 2018-10-03 | 2020-04-09 | Yazaki Corporation | Electrical Connection Box and Ground Connection Structure Thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6940412B2 (en) | 2001-09-13 | 2005-09-06 | Siemens Vdo Automotive Corporation | Method and apparatus for confirming control unit mount to non-conductive surface |
FI20035178A (fi) | 2003-10-03 | 2005-04-04 | Nokia Corp | Häiriösuojattu matkaviestin sekä vastaava menetelmä ja järjestely matkaviestimen häiriösuojauksessa |
JP5270649B2 (ja) | 2010-12-09 | 2013-08-21 | オートリブ ディベロップメント エービー | 乗員拘束装置用の制御装置 |
-
2020
- 2020-09-14 DE DE102020123816.9A patent/DE102020123816B4/de active Active
-
2021
- 2021-08-06 US US18/024,118 patent/US20230276582A1/en active Pending
- 2021-08-06 CN CN202180052852.3A patent/CN115916604A/zh active Pending
- 2021-08-06 KR KR1020237005652A patent/KR20230041753A/ko unknown
- 2021-08-06 WO PCT/DE2021/100677 patent/WO2022053100A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080035363A1 (en) * | 2006-08-10 | 2008-02-14 | Frank Shaochong Yan | Adjustable mud ring system |
US20140285986A1 (en) * | 2013-03-25 | 2014-09-25 | Denso Corporation | Electronic device for vehicle |
US20170305370A1 (en) * | 2014-09-24 | 2017-10-26 | Sumitomo Wiring Systems, Ltd. | Electrical junction box |
US20200112108A1 (en) * | 2018-10-03 | 2020-04-09 | Yazaki Corporation | Electrical Connection Box and Ground Connection Structure Thereof |
Also Published As
Publication number | Publication date |
---|---|
CN115916604A (zh) | 2023-04-04 |
KR20230041753A (ko) | 2023-03-24 |
JP2023538149A (ja) | 2023-09-06 |
DE102020123816B4 (de) | 2024-03-14 |
DE102020123816A1 (de) | 2022-03-17 |
US20230276582A1 (en) | 2023-08-31 |
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