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EP3520177B1 - Elektrisches verbindungssystem mit einer zusätzlichen blattfeder - Google Patents

Elektrisches verbindungssystem mit einer zusätzlichen blattfeder Download PDF

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Publication number
EP3520177B1
EP3520177B1 EP16787343.9A EP16787343A EP3520177B1 EP 3520177 B1 EP3520177 B1 EP 3520177B1 EP 16787343 A EP16787343 A EP 16787343A EP 3520177 B1 EP3520177 B1 EP 3520177B1
Authority
EP
European Patent Office
Prior art keywords
electrical connection
connection system
conductive
additional
conductive strip
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
Application number
EP16787343.9A
Other languages
English (en)
French (fr)
Other versions
EP3520177A1 (de
Inventor
Romain Villard
Yannick VILLARDIER
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.)
TE Connectivity Services GmbH
Original Assignee
TE Connectivity Services 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 TE Connectivity Services GmbH filed Critical TE Connectivity Services GmbH
Publication of EP3520177A1 publication Critical patent/EP3520177A1/de
Application granted granted Critical
Publication of EP3520177B1 publication Critical patent/EP3520177B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2608—Fastening means for mounting on support rail or strip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details
    • H01R4/485—Single busbar common to multiple springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2691—Clip-on terminal blocks for side-by-side rail- or strip-mounting with ground wire connection to the rail

Definitions

  • the present invention relates to an electrical connection system for an electrical device such as a terminal block, the system comprising an additional leaf spring.
  • junction block comprising an electrical connection system making it possible to electrically connect an electrical conductor and a support rail.
  • This type of terminal block also includes other sockets for connecting electrical conductors with conductive strips included in the body of the block.
  • the number of outlets implies a particular geometry of the terminal block so as not to exceed the template required in an electrical box.
  • the sizing of the electrical connection system can prove to be delicate.
  • the system must include a certain number of parts to ensure good electrical contact between the electrical conductor and the support rail.
  • the present invention aims to resolve all or part of the drawbacks mentioned above.
  • the present invention relates to an electrical connection system as described in claim 1.
  • This arrangement makes it possible to design a simple and reliable electrical connection system. Indeed, the fact of having a single conductive bar electrically connecting the support rail and the electrical conductor allows a good electrical connection while reducing the number of parts of the system to a minimum.
  • Material savings can be achieved as well as the reduction in transformations of the base materials used in the manufacture of the conductive bar, the leaf spring and the additional leaf spring.
  • the clamping device is a device equivalent to the leaf spring, this device being arranged to hold the conductive portion in the position of connection with the conductive bar.
  • the additional leaf spring can be qualified as a leaf spring for retaining the portion of the support rail. In fact in this case, the qualifier “additional” no longer applies to this leaf spring.
  • the clamping device is a screw clamping device.
  • the leaf spring and the additional leaf spring are identical. This arrangement makes it possible to standardize this part, which reduces the number of references and facilitates the management of the parts during the manufacture of the electrical connection system.
  • the conductive bar has a longitudinal contact surface on which the electrical contact location and the cooperation zone are formed.
  • This arrangement makes it possible to produce a conductive bar having a simple geometry, such as a folded longitudinal blade. The manufacture of the conductive bar is thus facilitated.
  • the cooperation zone extends at least partly in the same plane as the extension plane of the electrical contact location.
  • the cooperation zone extends at least partly in a plane transverse to the extension plane of the electrical contact location.
  • This arrangement also allows a simple installation of the connecting bar in the junction block and thus to save space compared to a bar to which are added ancillary devices for connection with the support rail and the electrical conductor.
  • the portion of the support rail and the conductive portion of the electrical conductor can thus be easily arranged close to one another.
  • the electrical contact location extends rectilinearly along a profile generating at least one groove. This arrangement allows better holding in position of the conductive portion.
  • the cooperation zone comprises a first part and a second part, the first part being able to cooperate with a first complementary part of the portion of the support rail extending along a first plane and the second part being able to cooperate with a second complementary part of the portion of the support rail extending along a second plane transverse to the first plane.
  • This cooperation in two transverse parts allows proper positioning of the respective support rail and the electrical connection system in the cooperation position.
  • the support branch extends in a plane transverse to the extension plane of the additional support branch.
  • This arrangement makes it possible to design a junction block in which the direction of insertion of the electrical conductor can be adapted according to the geometric constraints.
  • the conductive bar has a passage opening for the insertion of the conductive portion in the connection position.
  • This arrangement allows the realization of the conductive bar in a single piece having no point of weakness because the current can always be transmitted in sufficient quantity by the two side branches generated by the opening.
  • the conductive bar comprises a first part and a second part, the first part being opposite the second part.
  • This arrangement enables a compact electrical connection system to be produced. This arrangement also makes it possible to adapt the position of the leaf spring and of the additional leaf spring according to the geometric constraints due to the shape of the terminal block.
  • the conductive bar has a general U-shape.
  • This arrangement makes it possible to produce the conductive bar from a rectilinear blade which is then folded. This arrangement allows a saving in material because a base sheet cut into rectilinear blades generates little scrap, that is to say loss of material.
  • the additional support branch extends in the extension of the second part of the conductive bar, the cooperation zone being provided in the first part of the conductive bar.
  • This arrangement makes it possible to produce a clamp for holding the portion of the support rail in position with the cooperation zone and the additional clamping branch.
  • the conductive bar consists of a folded conductive blade.
  • the manufacture of the conductive bar is easy since it is made from a cut sheet which is then folded to give the conductive bar its final shape.
  • the conductive bar consists of a conductive blade.
  • This arrangement facilitates the manufacture of the conductive bar because it comes from a flat blade which is then transformed.
  • the mass production of this single conductive part therefore makes it possible to save production time and reduce conversion costs compared to a system comprising several conductive parts.
  • a saving in material is achieved because a base sheet can generate a large number of blades, material waste being reduced.
  • the conductive blade is included in a rectangular outline.
  • the blade is a rectangle, it is easy to find an arrangement of the cutouts to be made on the base sheet to minimize scrap and produce the most conductive bars.
  • the conductive bar comprises a recess adapted for the force engagement of a fixing part of the support branch and / or comprises an additional recess adapted to the interlocking by force of an additional fixing part of the additional support branch.
  • the depression is achieved by cutting the conductive blade.
  • the depression is thus carried out during the cutting of the conductive blade, which limits the manufacturing time.
  • the cutout creates a through opening in the conductive bar.
  • the present invention also relates to a terminal block comprising an insulating body in which an electrical connection system as described above is provided.
  • the insulating body comprises a support portion of the support branch and / or an additional support portion of the additional support branch.
  • This arrangement makes it possible to ensure the locking of the support branch during the stressing of the clamping branch and the same for the additional support branch and the additional support portion.
  • an electrical device 1 such as a junction block 3 comprises an insulating body 5 and an electrical connection system 7, the electrical connection system 7 being provided in the insulating body 5.
  • the terminal block 3 includes sockets 9 for electrical conductors. Two sockets 9 are connected by a connecting bar 11 to establish electrical contact between two corresponding conductors.
  • the terminal block 3 also has a socket 9 'for an electrical conductor 13 intended to be electrically connected to a support rail 15 on which the terminal block 3 is removably fixed.
  • the electrical conductor 13 has at one end a conductive portion 13 ', for example a metal tip.
  • the metal tip is designed to be inserted into an insertion channel 17 of the socket 9 'where it is held in position by the electrical connection system 7.
  • the socket 9 'further comprises an operating channel 19 into which a user can insert a screwdriver type tool for the removal of the electrical conductor 13.
  • the electrical connection system 7 comprises a conductive bar 21 arranged to transmit a current between the conductive portion 13 'of the electrical conductor 13 and a portion 15' of the support rail 15.
  • the support rail 15 thus has a dual function since it allows the fixing of the junction block 3 and it is also used to be electrically connected to the electrical conductor 16.
  • the electrical connection system 7 also comprises a clamping device 22 of the leaf spring type 23 arranged to hold the conductive portion 13 'in a position of connection with the conductive bar 21 as illustrated in figures 1, 2 , 7, 8 .
  • any other type of clamping device 22 could be used provided that the clamping device 22 is arranged to hold the conductive portion 13 'in a position of connection with the conductive bar 21.
  • a clamping device 22 screw could for example be used.
  • the leaf spring 23 comprises a support branch 23 'arranged to be mounted on the conductive bar 21.
  • the conductive bar 21 has a recess 25 or a through opening resulting from a cutout suitable for force-fitting. of a fixing part 27 of the support branch 23 '.
  • the leaf spring 23 also comprises a clamping branch 23 "joined by an articulation 23 '" to the support branch 23'.
  • the clamping branch 23 is arranged to hold the conductive portion 13 'in the connection position.
  • the operating channel 19 is arranged so as to allow the movement of the clamping branch 23 "for the removal of the electrical conductor 13.
  • the insulating body 5 has a support portion 29 of the support branch 23 'whose function is to block the support branch 23' during the movement of the clamping branch 23 ".
  • the conductive bar 21 has a folded end portion 31 generating a first part 33 ′ of a cooperation zone 35 or cooperation projection 33 and a second part 37 ′ of the cooperation zone 35 or cooperation stop 37.
  • This first part 33 'of the conductive bar 21 is arranged to cooperate with a first complementary part 39 of the support rail 15 extending along a first plane 39'.
  • This second part 37 'of the conductor bar 21 is arranged to cooperate with a second complementary part 41 of the support rail 15 extending along a second plane 41' transverse to the first plane 39 '.
  • the conductive bar 21 also has a longitudinal contact surface 43 on which are formed an electrical contact location 45 with the conductive portion 13 'in the connection position, the cooperation projection 33 and the cooperation stop 37.
  • the electrical contact location 45 extends in a rectilinear manner along a profile generating one or more grooves for better retention of the conductive portion 13 'in the connection position.
  • the conductive bar 21 also has a passage opening 47 for the insertion of the conductive portion 13 'in the connection position. This passage opening 47 results for example from a cut made before folding the conductive bar 21.
  • the electrical connection system 7 also comprises a holding device 49 arranged to hold the support rail 15 in a position of cooperation with the conductive bar 21.
  • the cooperation takes place by contact, which allows current transmission between the conductive bar 21 and the support rail 15.
  • the conductive bar 21 comprises a first part 51 and a second part 53 at least partially opposite the first part 51.
  • the first part 51 comprises the longitudinal contact surface 43 and the second part 53 cooperates with the holding device 49.
  • the fact of having these two parts 51, 53 makes it possible to produce a compact electrical connection system 7 and / or s '' adapt to geometric constraints imposed on the terminal block 3.
  • the conductive bar 21 can thus be obtained by cutting in a base sheet and then by folding.
  • the conductive bar may have a general U-shape.
  • the first part 51 the second part 53 are each formed in a different branch of the U.
  • the general U-shape of the conductive bar 21 is obtained from a conductive blade cut from a base sheet.
  • the blade is included in a rectangular outline, which saves material by limiting scraps during cutting. When cutting, through openings are also created.
  • This arrangement makes it possible to maintain a large section for good current transmission once the conductive strip 21 is folded.
  • the conductive bar 21 once folded also has good strength and does not risk being deformed during assembly in the junction block 3.
  • the retaining device comprises an additional leaf spring 57.
  • This additional leaf spring 57 may be similar to the leaf spring holding the conductive portion 13 'in the connection position.
  • the additional leaf spring 57 comprises an additional support leg 57 'provided with an additional fixing part 60 arranged to be fixed to an additional recess 59 of the conductive bar 21 in a similar manner to the leaf spring 23 of the conductive portion 13 '.
  • the additional leaf spring 57 also comprises an additional clamping branch 57 "arranged to cooperate with the portion 15 'of the support rail 15 in the cooperating position.
  • the additional leaf spring 57 comprises an articulation 57 "'.
  • the additional clamping branch 57" maintains the portion 15' of the support rail 15 in the cooperative position.
  • the electrical connection system 7 obtained therefore comprises few parts, is compact and is able to comply with geometric constraints of lack of space for its integration into the junction block.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Installation Of Bus-Bars (AREA)

Claims (8)

  1. Elektrisches Verbindungssystem (7) für ein elektrisches Gerät (1) wie einen Verbindungsblock (3), wobei das elektrische Verbindungssystem (7) umfasst:
    - eine Stromschiene (21), die eine elektrische Kontaktstelle (45) aufweist, die ausgelegt ist, um mit einem leitenden Abschnitt (13') eines elektrischen Leiters (13) an einer Verbindungsposition zusammenzuwirken, und eine Zusammenwirkungszone (35), die ausgelegt ist, um mit einem Abschnitt (15') einer Halteschiene (15) in einer Zusammenwirkungsposition zusammenzuwirken, wobei die Stromschiene (21) einen ersten Teil (51) und einen zweiten Teil (53) umfasst, wobei der erste Teil (51) dem zweiten Teil (53) zugewandt ist, wobei die Stromschiene (21) eine allgemeine U-Form aufweist,
    - eine Spannvorrichtung (22), die eingerichtet ist, um den leitenden Abschnitt (13') in Verbindungsposition zu halten, wie eine Blattfeder (23), umfassend einen Stützschenkel (23'), der eingerichtet ist, um an der Stromschiene (21) angebracht zu sein, und einen Spannschenkel (23"), der eingerichtet ist, um den leitenden Abschnitt (13') in Verbindungsposition zu halten,
    - eine Haltevorrichtung (49), die eingerichtet ist, um die Zusammenwirkungsposition mit dem Abschnitt (15') der Halteschiene (15) zu halten,
    wobei die Haltevorrichtung (49) eine zusätzliche Blattfeder (57) umfasst, die mit einem zusätzlichen Stützschenkel (57') versehen ist, der eingerichtet ist, um an der Stromschiene (21) angebracht zu sein, und einen zusätzlichen Spannschenkel (57"), der eingerichtet ist, um mit dem Abschnitt (15') der Halteschiene (15) in Zusammenwirkungsposition zusammenzuwirken, wobei sich der zusätzliche Stützschenkel (57') in der Verlängerung des zweiten Teils (53) der Stromschiene (21) erstreckt, wobei die Zusammenwirkungszone (35) im ersten Teil (51) der Stromschiene (21) eingearbeitet ist.
  2. Elektrisches Verbindungssystem (7) nach Anspruch 1, wobei die Stromschiene (21) eine längliche Kontaktfläche (43) aufweist, auf der die elektrische Kontaktstelle (45) und die Zusammenwirkungszone (35) eingearbeitet sind.
  3. Elektrisches Verbindungssystem (7) nach einem der Ansprüche 1 oder 2, wobei die Zusammenwirkungszone (35) einen ersten Teil (33') und einen zweiten Teil (37') umfasst, wobei der erste Teil (33') imstande ist, mit einem komplementären ersten Teil (39) des Abschnitts (15') der Halteschiene (15) zusammenzuwirken, der sich in einer ersten Ebene (39') erstreckt, und der zweite Teil (37') imstande ist, mit einem komplementären zweiten Teil (41) des Abschnitts (15') der Halteschiene (15) zusammenzuwirken, der sich in einer zweiten Ebene (41') transversal zur ersten Ebene (41) erstreckt.
  4. Elektrisches Verbindungssystem (7) nach einem der Ansprüche 1 bis 3, wobei sich der Stützschenkel (23') in einer Ebene erstreckt, die transversal zur Erstreckungsebene des zusätzlichen Stützschenkels (57') ist.
  5. Elektrisches Verbindungssystem (7) nach einem der Ansprüche 1 bis 4, wobei die Stromschiene (21) eine Durchgangsöffnung (47) für das Einsetzen des leitenden Abschnitts (13') in Verbindungsposition aufweist.
  6. Elektrisches Verbindungssystem (7) nach einem der Ansprüche 1 bis 5, wobei la Stromschiene (21) aus einem gefalteten leitenden Blatt besteht.
  7. Elektrisches Verbindungssystem (7) nach einem der Ansprüche 1 bis 6, wobei die Stromschiene (21) eine Vertiefung (25) umfasst, die für das kraftschlüssige Einsetzen eines Befestigungsteils (27) des Stützschenkels (23') geeignet ist und/oder eine zusätzliche Vertiefung (59) umfasst, die für das kraftschlüssige Einsetzen eines zusätzlichen Befestigungsteils (60) des zusätzlichen Stützschenkels (57') geeignet ist.
  8. Verbindungsblock (1), umfassend einen Isolierkörper (5), in dem ein elektrisches Verbindungssystem (7) nach einem der Ansprüche 1 bis 7 eingearbeitet ist.
EP16787343.9A 2016-09-29 2016-09-29 Elektrisches verbindungssystem mit einer zusätzlichen blattfeder Active EP3520177B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/073300 WO2018059696A1 (fr) 2016-09-29 2016-09-29 Système de liaison électrique avec un ressort à lames additionnel

Publications (2)

Publication Number Publication Date
EP3520177A1 EP3520177A1 (de) 2019-08-07
EP3520177B1 true EP3520177B1 (de) 2020-11-11

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EP16787343.9A Active EP3520177B1 (de) 2016-09-29 2016-09-29 Elektrisches verbindungssystem mit einer zusätzlichen blattfeder

Country Status (4)

Country Link
US (1) US10985475B2 (de)
EP (1) EP3520177B1 (de)
CN (1) CN109845038B (de)
WO (1) WO2018059696A1 (de)

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CN109845038A (zh) 2019-06-04
WO2018059696A1 (fr) 2018-04-05
CN109845038B (zh) 2021-04-13
US10985475B2 (en) 2021-04-20
US20190229440A1 (en) 2019-07-25
EP3520177A1 (de) 2019-08-07

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