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WO2024193745A1 - Unité de connexion de type fiche électrique, boîtier d'un dispositif électrique, et machine d'entraînement électrique - Google Patents

Unité de connexion de type fiche électrique, boîtier d'un dispositif électrique, et machine d'entraînement électrique Download PDF

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Publication number
WO2024193745A1
WO2024193745A1 PCT/DE2024/100108 DE2024100108W WO2024193745A1 WO 2024193745 A1 WO2024193745 A1 WO 2024193745A1 DE 2024100108 W DE2024100108 W DE 2024100108W WO 2024193745 A1 WO2024193745 A1 WO 2024193745A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
electrical
connection unit
contacts
housing
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.)
Pending
Application number
PCT/DE2024/100108
Other languages
German (de)
English (en)
Inventor
Bastian DIETRICH
Robert DRESSEL
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2024193745A1 publication Critical patent/WO2024193745A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/08—Short-circuiting members for bridging contacts in a counterpart
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • Electrical connector unit housing of an electrical device and electrical drive machine
  • the invention relates to an electrical plug connection unit, a housing of an electrical device with the electrical plug connection unit and an electrical drive machine with this housing.
  • Electrical plug connection units of various designs are known from the state of the art. They are used to create electrical connections for a wide variety of purposes.
  • JP 2021 012 859 A2 discloses that a short circuit is created by a conductive, hole-filling element.
  • this embodiment must be considered unsafe from an occupational safety perspective, since it cannot be ruled out that a tool such as a screwdriver comes into electrical contact with the conductive element during servicing.
  • WO 2022 106 693 A1 teaches a high-voltage plug connection that is configured to establish circuit continuity when coupled to a high-voltage connector in a high-voltage interlock circuit and to deactivate circuit continuity when decoupled from the high-voltage connector. This increases the safety of the high-voltage interlock system.
  • US 2022 158 394 A discloses an in-vehicle electrical device comprising a housing and a sheet metal assembly attached to a surface of the housing.
  • the sheet metal assembly includes a sheet metal that is a stamped part and a locking connector disposed on a surface of the sheet metal and a metal sheet extending laterally of the locking connector, the locking connector being held on the metal sheet by caulking the metal sheet and a caulked point of both the metal sheet and the metal sheet being raised outwardly from the housing.
  • US 2020 036 131 A discloses the use of a hold-down device to fix a connector in a housing.
  • US 2020 036 131 A teaches a cover with a cover body and a locking connector.
  • the cover body covers an opening provided in a housing of a power conversion device and is electrically conductive.
  • the locking connector is electrically connectable to a socket connector provided inside the housing.
  • a noise shielding layer and a low conductivity layer are formed between the cover body and the locking connector.
  • the noise shielding layer is electrically conductive.
  • the low conductivity layer is closer to the cover body than the noise shielding layer and is less electrically conductive than the cover body and the noise shielding layer.
  • Electric drive units for motor vehicles are operated in the high-voltage range.
  • it is necessary to guarantee that the machine is de-energized when the housing is opened, regardless of the current temperature of the electric machine and/or its age.
  • spring-loaded push buttons carry the risk of accidental activation.
  • the spring preload can decrease due to temperature changes and relaxation.
  • unauthorized intervention in the high-voltage range of an electric machine that is under voltage can lead to the electric drive not functioning properly.
  • the present invention is based on the object of providing an electrical plug connection unit as well as a housing equipped therewith and an electrical drive machine with this housing, which can guarantee a voltage-free state in a simple and robust construction in a safe manner when the plug connection is disconnected.
  • This object is achieved by the electrical plug connection unit according to claim 1, by the housing according to claim 9 and by the electric drive machine according to claim 10.
  • the invention relates to an electrical plug connection unit, comprising as plug elements a plug with at least two plug contacts and a plug receptacle with at least two plug contact receptacles, wherein the plug is designed to be plugged into the plug receptacle along an insertion direction and thereby to produce an electrically conductive connection between the plug contacts and the plug contact receptacles.
  • the plug connection unit also has at least one holding element. At least one of the plug elements is mounted by a holding element by means of a floating bearing, wherein the floating bearing allows a relative movement between the plug and the plug receptacle perpendicular to the insertion direction.
  • the plug contacts When the plug is inserted into the plug receptacle, the plug contacts are moved into the plug contact receptacles along the insertion direction. Because the plug and/or the plug receptacle are mounted in a floating manner, position and/or manufacturing tolerances can be compensated for very easily, while at the same time the plugging process is easy to implement and thus electrical contact is made between the contacts so that voltage can be applied again.
  • the plug element supported by the holding element is fixed along the insertion direction by the holding element.
  • the holding element allows the relevant plug element, such as the plug, the translatory degree of freedom along the Insertion direction is blocked in relation to the holding element.
  • the floating plug element is therefore not movable or detachable in the assembly direction or along the insertion direction. This ensures that an electrical contact between the plug contacts and the plug contact receptacles is maintained when plugged in. If the holding element is removed from the plug contact receptacles, the plug elements also move relative to one another in accordance with the relative movement of the holding element in relation to the plug element that is not attached to the holding element, so that the electrical contact or the previously realized short circuit is broken. This leads to an immediate interruption of the electrical contact in the event of such a movement.
  • the holding element and/or the plug-in element supported by the holding element engages behind the other element on the side of the other element facing away from itself.
  • the retaining element can form a rear grip of the plug in order to block the translatory degree of freedom of the plug along the insertion direction in relation to the retaining element, while enabling a floating bearing perpendicular to the insertion direction
  • An inclined sliding surface can be formed on at least one engagement element, and the engagement element or its attachment to the other body of the element in question can be designed to be elastically springy, so that, by utilizing the wedge principle implemented by the inclined sliding surface, the engagement element can be elastically displaced so far when the other element is pressed against it that the other element can be pushed behind the engagement element, and can thus be engaged by the engagement element when the engagement element elastically springs back and thus held and blocked along the translational degree of freedom along the insertion direction. Accordingly, a locking mechanism can be implemented. On the side of the element comprising the engagement element opposite the engagement element, the respective other element can rest against a body of the element comprising the engagement element and thus block movement of the other element along this direction.
  • One embodiment provides that only the plug is supported by a holding element by means of a floating bearing.
  • the plug receptacle is fixed in its translational degrees of freedom perpendicular to the insertion direction. It should not be ruled out that an inverted arrangement is also implemented, namely that the plug receptacle is supported by the holding element by means of a floating bearing and the plug is fixed transversely to the insertion direction.
  • Longitudinal axes of the plug contacts can have a distance A from each other, whereby by means of the floating bearing a relative movement between the plug and the plug receptacle can be carried out perpendicular to the insertion direction with a distance B, whereby the following applies: 0.2 ⁇ A/B ⁇ 1.25.
  • the longitudinal axes are the center axes of the plug contacts or the holes or elongated receiving spaces of the plug contact receptacles. Accordingly, the longitudinal axes of the plug contact receptacles are also spaced A apart from one another.
  • the floating bearing realizes a position tolerance that is approximately equal to the distance between the longitudinal axes, or possibly just as large as the distance between the longitudinal axes.
  • the plug receptacle can have at least one insertion bevel to guide the plug on the axis of the insertion direction.
  • This embodiment further facilitates the insertion movement of the plug into the plug receptacle. This enables the plug connection to be made even if the position of the plug elements differs relative to one another and thus a certain robustness of the plug connection unit even in the case of so-called blind assembly.
  • a further advantageous embodiment provides that the plug forms a short circuit between its plug contacts, and that the plug receptacle has electrical contacts associated with its plug contact receptacles, which are electrically insulated from one another, so that when the electrical contacts of the plug receptacle are contacted by means of the plug contacts of the plug the electrical contacts of the plug receptacle are short-circuited with each other.
  • the plug essentially acts like a switch to close an electrical circuit between contacts.
  • the plug thus has a short-circuit element which, when its electrical connection to the plug contact receptacles is removed, de-energizes an electrical unit equipped with the electrical plug contacts.
  • the plug receptacle can have an insulating body that has insertion holes assigned to the electrical contacts, into which the plug contacts of the plug can be inserted or are inserted.
  • the electrical contacts are arranged inside the insulating body, which can be electrically contacted by the plug contacts of the plug when the plug is inserted into the plug receptacle. This ensures that the electrical contacts of the plug receptacle essentially cannot be contacted unintentionally.
  • a further aspect of the present invention is a housing of an electrical device, comprising a housing body and a housing cover and a described electrical plug connection unit, wherein a holding element of the electrical plug connection unit is arranged on the housing cover.
  • the plug is arranged indirectly, namely via the holding element, on the housing cover and the plug receptacle is arranged on the housing.
  • This interruption of the current flow can be implemented, for example, on a connection circuit of the three phases U, V and W of an electrical drive machine designed for 3-phase alternating current. In this way, this electrical unit can be switched off so that interventions can then be carried out without danger.
  • the plug When the housing cover is mounted, the plug establishes an electrical contact or a short circuit, e.g. between the phases, and thus ensures the functionality of the electrical unit.
  • the invention provides an electric drive machine which has a described housing.
  • the electric drive machine equipped with the housing or the electrical plug connection unit can therefore be de-energized when the housing cover is opened.
  • the electric drive machine can be part of a so-called electric axle, whereby the electrical plug connection unit described is used to ensure that the system is de-energized during servicing.
  • the electrical plug connection unit can be designed to connect or disconnect electrical contacts in the low-voltage range of the electric drive machine.
  • Figure 1 an electrical plug connection unit with separated plug elements in perspective view
  • Figure 2 the electrical plug connection unit with plug elements inserted into each other in perspective view
  • Figure 3 the plug elements of the electrical connector unit in perspective view
  • Figure 4 a retaining element with plug on the housing cover in perspective view
  • FIG. 5 the assembled electrical connector unit in a perspective sectional view.
  • the electrical plug connection unit shown in Figures 1, 2 and 5 comprises a first plug element 1 in the form of a plug 10 and a second plug element 2 in the form of a plug receptacle 20.
  • the plug receptacle 20 is arranged on a housing body 50, only partially shown here, which can be part of an electric drive machine.
  • the plug 10 is arranged on a housing cover 51, only partially shown here, wherein the arrangement of the plug 10 is realized by means of a holding element 40, which is mechanically connected to the housing cover 51 and fixes the plug 10.
  • the plug 10 comprises two protruding plug contacts 11.
  • the plug receptacle 20 comprises two plug contact receptacles 21 assigned to the respective plug contacts 11.
  • the plug contacts are designed in such a way that they can be inserted into the plug contact receptacles 21 along an insertion direction 30 in order to contact electrical contacts that are not visible here.
  • the electrical contacts reference is made to Figure 5 and the associated description.
  • FIG 3 shows the two plug elements 1, 2 when they are not plugged into one another.
  • the plug receptacle 20 has four insertion bevels 26 running at an angle to one another on its side facing the plug 10, which force the plugs 10 onto the longitudinal axes of the plug contact receptacles 21 or the insertion holes 24 in the insulating body 23 of the plug receptacle 20 during the plugging process in order to electrically contact the electrical contacts 22 of the plug contact receptacles 21, which are electrically insulated from one another by means of a plastic web 25.
  • first locking element 27 is formed on the plug 10 and a second locking element 28 is formed on the plug receptacle 20, wherein the two locking elements 27, 28 form a positive connection with one another or lock into place when the plug 10 is fully plugged into the plug receptacle 20.
  • FIG 4 shows the arrangement of the plug 10 on the housing cover 51 by means of the holding element 40. Holes or bores are provided in the holding element 40 through which caulkings 43 of material of the housing cover 51 are realized. in order to create firm positive and/or non-positive connections between the housing cover 51 and the holding element 40.
  • the caulkings 43 are therefore only made by sheet metal forming, which has the advantage that no through holes or threads need to be made in the housing cover 51, so that the fastening of the holding element 40 to the housing cover 51 can be carried out very cost-effectively and with guaranteed tightness.
  • the positioning of the plug 10 by the holding element 40 is explained with reference to Figure 5.
  • the holding element 40 comprises engagement elements 41 that engage behind the plug 10 on the side of the arrangement of the plug contacts 11. This blocks a translational degree of freedom 44 that is aligned essentially parallel to the longitudinal axes 14 of the plug contacts 11.
  • the upper engagement element 41 comprises a sliding surface 42 which enables the plug 10 to slide along this sliding surface 42 when inserted into the holding element 40 and, due to the wedge effect realized by the inclined sliding surface 42, elastically deforms the engagement element 41 equipped with the sliding surface 42 so that it is pushed out of the path of movement of the plug 10 and the plug 10 can get behind the engagement element 41 so that the engagement element 41 can elastically deform back and can engage behind the plug 10 accordingly, as shown in Figure 5.
  • the holding element 40 only fixes the plug 10 along the blocked translational degree of freedom 44, so that the plug 10 still has a first free translational degree of freedom 45 perpendicular to the longitudinal axes 14 of the plug contacts 11 and a second free translational degree of freedom 46 perpendicular to the longitudinal axes 14 of the plug contacts 11.
  • the sectional view in Figure 5 clearly shows the two plug contacts 11, as well as a short-circuit element 12, which connects the two plug contacts 11 electrically connected to one another.
  • the short-circuit element 12 is arranged in a clearance 13.
  • the two plug contacts 11 are spaced A apart.
  • the short-circuit element 12 ensures that, when the plug 10 is plugged in, as shown in Figure 2, the electrical contacts in the plug contact receptacles 21 of the plug receptacle 20 are electrically connected to one another, so that an electrical circuit can be closed, such as a circuit of the power electronics of an electric drive machine. If the plug 10 is pulled out of the plug receptacle 20, this electrical contact is interrupted accordingly and an electrical unit equipped with the electrical plug connection unit can be de-energized.
  • the plug 10 Due to the fact that the plug 10 is held along two translational degrees of freedom with a clearance by the holding element 40, position inaccuracies or tolerances of the arrangement of the plug 10 and the plug receptacle 20 can be compensated, so that the plug 10 can be easily inserted into the plug receptacle 20, such as a so-called "blind plugging", in order to close the electrical contacts.
  • the electrical plug connection unit proposed here as well as the housing equipped with it and the electrical drive machine with this housing, provide devices which, in a simple and robust design, can safely guarantee that the device is free of voltage when the plug connection is disconnected.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Abstract

L'invention concerne une unité de connexion de type fiche électrique, un boîtier d'un dispositif électrique ayant l'unité de connexion de type fiche électrique, et une machine d'entraînement électrique ayant ledit boîtier. En tant qu'éléments de fiche (1, 2), l'unité de connexion de type fiche électrique comprend une fiche (10) qui a au moins deux contacts de fiche (11), et une prise de fiche (20) qui a au moins deux prises de contact de fiche (21), dans lesquels la fiche (10) est conçue pour être enfichée dans la prise de fiche (20) le long d'une direction d'enfichage (30) et établir ainsi une connexion électriquement conductrice entre les contacts de fiche (11) et les prises de contact de fiche (21), et dans lesquels l'unité de connexion de type fiche a en outre au moins un élément de maintien (40), et au moins l'un des éléments de fiche (1, 2) est supporté par un élément de maintien (40) par l'intermédiaire d'un montage flottant, dans lesquels le montage flottant permet un mouvement relatif entre la fiche (10) et la prise de fiche (20) perpendiculairement à la direction d'enfichage (30). Avec l'unité de connexion de type fiche électrique proposée ici, le boîtier équipé de ladite unité de connexion de type fiche électrique, et la machine d'entraînement électrique ayant ledit boîtier, des dispositifs sont fournis qui sont de conception simple et robuste et peuvent assurer de manière fiable une absence de tension lorsque la connexion de type fiche est déconnectée.
PCT/DE2024/100108 2023-03-20 2024-02-08 Unité de connexion de type fiche électrique, boîtier d'un dispositif électrique, et machine d'entraînement électrique Pending WO2024193745A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023106904 2023-03-20
DE102023106904.7 2023-03-20

Publications (1)

Publication Number Publication Date
WO2024193745A1 true WO2024193745A1 (fr) 2024-09-26

Family

ID=89983783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2024/100108 Pending WO2024193745A1 (fr) 2023-03-20 2024-02-08 Unité de connexion de type fiche électrique, boîtier d'un dispositif électrique, et machine d'entraînement électrique

Country Status (1)

Country Link
WO (1) WO2024193745A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967693B1 (fr) * 1998-06-22 2003-12-03 The Whitaker Corporation Assemblage de connecteurs flottants
US20120282789A1 (en) * 2011-05-06 2012-11-08 Sumitomo Wiring Systems, Ltd. Device connector
US20120285718A1 (en) * 2011-05-10 2012-11-15 Sumitomo Wiring Systems, Ltd. Seal cover for in-vehicle electric device
US20200036131A1 (en) 2017-04-05 2020-01-30 Denso Corporation Cover with interlock connector
JP2021012859A (ja) 2019-07-09 2021-02-04 トヨタ自動車株式会社 インタロックコネクタ付きカバー
US20220158394A1 (en) 2020-11-16 2022-05-19 Mitsubishi Electric Corporation In-vehicle electrical device
WO2022106693A1 (fr) 2020-11-23 2022-05-27 Delphi Technologies Ip Limited Ensemble fiche hvil, dispositif de connexion hvil et procédé de retrait de l'ensemble fiche hvil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0967693B1 (fr) * 1998-06-22 2003-12-03 The Whitaker Corporation Assemblage de connecteurs flottants
US20120282789A1 (en) * 2011-05-06 2012-11-08 Sumitomo Wiring Systems, Ltd. Device connector
US20120285718A1 (en) * 2011-05-10 2012-11-15 Sumitomo Wiring Systems, Ltd. Seal cover for in-vehicle electric device
US20200036131A1 (en) 2017-04-05 2020-01-30 Denso Corporation Cover with interlock connector
JP2021012859A (ja) 2019-07-09 2021-02-04 トヨタ自動車株式会社 インタロックコネクタ付きカバー
US20220158394A1 (en) 2020-11-16 2022-05-19 Mitsubishi Electric Corporation In-vehicle electrical device
WO2022106693A1 (fr) 2020-11-23 2022-05-27 Delphi Technologies Ip Limited Ensemble fiche hvil, dispositif de connexion hvil et procédé de retrait de l'ensemble fiche hvil

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