EP3457497A1 - Elektrischer kontaktschalter mit druckknopf zum öffnen der verschlussfeder einer push-in-anschlussklemme - Google Patents

Elektrischer kontaktschalter mit druckknopf zum öffnen der verschlussfeder einer push-in-anschlussklemme Download PDF

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Publication number
EP3457497A1
EP3457497A1 EP17191279.3A EP17191279A EP3457497A1 EP 3457497 A1 EP3457497 A1 EP 3457497A1 EP 17191279 A EP17191279 A EP 17191279A EP 3457497 A1 EP3457497 A1 EP 3457497A1
Authority
EP
European Patent Office
Prior art keywords
push button
housing
clamping
electrical
clamping spring
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.)
Withdrawn
Application number
EP17191279.3A
Other languages
English (en)
French (fr)
Inventor
Vincent Parniere
Armando Vilas Boas
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.)
ABB Schweiz AG
Original Assignee
ABB Schweiz AG
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 ABB Schweiz AG filed Critical ABB Schweiz AG
Priority to EP17191279.3A priority Critical patent/EP3457497A1/de
Publication of EP3457497A1 publication Critical patent/EP3457497A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4833—Sliding arrangements, e.g. sliding button
    • 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
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4837—Single arrangement activating 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
    • H01R4/4846—Busbar details
    • H01R4/485—Single busbar common to multiple springs

Definitions

  • the present invention relates to an electric contactor comprising a housing formed in an electrically insulating material and at least one pressure-type connection terminal including at least one insertion opening defined by the housing for inserting an electrical conductor inwards housing and a clamping spring mounted in the housing to hold the electrical conductor after insertion.
  • an electrical contactor is an electrical apparatus comprising an electrically insulating housing enclosing a plurality of electrical contacts each varying, by an external control particularly of electrical type, between a closed configuration establishing an electrical connection and an open configuration where the electrical connection is not established.
  • An electric contactor also comprises a plurality of connection terminals mounted in the housing and elements for removably fixing the housing on a support, for example a support rail of an electrical cabinet.
  • connection terminals of an electrical contactor make it possible to electrically connect at least one electrical conductor such as an electric wire.
  • the electrical conductor thus connected via one of the connection terminals is intended to be electrically connected to a conductive element internal to the contactor, this conductive element being itself electrically connected to a fixed part of one of the contacts. electric.
  • each connection terminal comprises a clamping spring arranged so as to open automatically under the action of the insertion of the electrical conductor into the clamping spring and then to exert , by elastic return of its material, a pressure force on the electrical conductor after its insertion, this pressure force being able to maintain the electrical conductor in an axially locked state by the clamping spring.
  • an electrical conductor is generally effected by means of an elongated tool such as a screwdriver inserted into a slot in the housing until the spring can be moved aside to release the electrical conductor from the effort pressure and allow it to be removed from the connection terminal.
  • an elongated tool such as a screwdriver inserted into a slot in the housing until the spring can be moved aside to release the electrical conductor from the effort pressure and allow it to be removed from the connection terminal.
  • the object of the present invention is to meet all or some of the disadvantages presented above.
  • an electric contactor comprising a housing formed of an electrically insulating material and at least one pressure type connection terminal including on the one hand at least one insertion opening defined by the housing.
  • a clamping spring mounted in the housing and able to occupy an active configuration where a tightening leg of the clamping spring can freely move under the effect of the force insertion of the electrical conductor between the housing and the clamping branch at the level of the insertion opening, from a natural closing position, to a partial opening position of the clamping branch in which it provides a mechanical and electrical contact between the inserted electrical conductor and a conducting bar mounted in the housing and a electrical conductor restraint, wherein the electrical contactor comprises at least one pushbutton for actuating the clamping spring.
  • the push button may in particular be mounted in the box so as to be displaced, under the effect of an external bearing force, of a raised position in which the push button authorizes the clamping spring to occupy its active configuration towards a lowered position towards the inside of the housing in which a bearing surface of the push button presses on the clamping spring in a manner placing the clamping spring in an inactive configuration where its clamping branch occupies a fully open position wherein the electrical conductor can freely be removed from the connection terminal to the outside of the housing.
  • Such an electric contactor has the advantage of being compact and allow to reliably, easily and conveniently remove an electrical conductor from the connection terminal which holds it. Simply push the push button until the clamp spring is in the inactive configuration. It is even possible to configure the electric contactor so that the actuation of a single push button can control the opening of several springs at the same time, which further simplifies the management of electrical conductors and further enhances the ergonomics for the user. Depending on the organization of each push button, it may advantageously be possible to exert this thrust directly by the finger of the user, then free from any need to use a tool such as a screwdriver.
  • the electric contactor can also meet the technical characteristics presented below, taken separately or in combination.
  • the push button protrudes from the housing.
  • This arrangement has the advantage that the push button can be operated either manually or by means of a screwdriver type tool.
  • the push button In the raised position, the push button is flush with the housing.
  • This arrangement has the advantage that the push button can be operated only by means of a screwdriver-type tool, avoiding inadvertent manual pressing on the push button.
  • a hollow cavity is formed in an upper face of the push button accessible from the outside, said hollow cavity being adapted to the introduction of a screwdriver tip.
  • the electrical contactor comprises at least two separate clamping springs and the pushbutton is configured so as to cooperate with a single clamping spring among said at least two clamping springs.
  • the electrical contactor comprises at least two separate clamping springs and the pushbutton is configured so as to cooperate with said at least two clamping springs, so as to place them simultaneously in their inactive configurations when the pushbutton is in its lowered position and to place them simultaneously in their active configurations when the push button is in its raised position.
  • the housing and the push button delimit respectively first elements and second elements of the same locking mechanism, complementary and capable of cooperating with each other so that the locking mechanism ensures a positive blocking of the push button in its lowered position.
  • the locking mechanism is configured so that the release of the push button, to allow its movement to the raised position, results from a tilting movement of the push button along an axis perpendicular to the path of movement of the push button during the passage of the position raised towards the lowered position, said tilting movement being obtained under the effect of an external tilting force applied to the push button.
  • the movement of the pushbutton from the lowered position to the raised position is achieved by the action of the clamping spring during its return to its active configuration.
  • the housing and the push button delimit respectively first elements and second elements of the same retaining system, complementary and able to cooperate by snapping between them so that the retaining system ensures a retention of the push button in its raised position to avoid an exit of the push button towards the outside of the box.
  • the box and the push button delimit respectively first elements and second elements of the same translational guide system, complementary and capable of cooperating with each other so that the passage from the raised position to the lowered position, and vice versa, practice by sliding the push button relative to the housing.
  • Figures 10 and 11 illustrate, in partial longitudinal section, the electrical contactor of the Figure 1 respectively in the raised position and in the lowered position of one of the push buttons.
  • the invention essentially relates to an electric contactor 10 comprising a housing 11 formed of an electrically insulating material.
  • the housing 11 comprises fastening elements 12 arranged on its rear face, for fixing, for example by snapping, the housing 11 on a mounting rail of an electrical cabinet.
  • the housing 11 consists of a base 11a which carries, on a rear face, the fastening elements 12 and a cover 11b to be removably mounted on a front face of the base 11a.
  • the electrical contactor 10 comprises a plurality of electrical contacts each having a movable portion 13a and a fixed portion 13b and each varying, by an external control particularly of electrical type, between a closed configuration establishing an electrical contact between the movable portion 13a and the fixed part 13b and an open configuration where this electrical contact between parts 13a, 13b is not established.
  • the movable portion 13a of the electrical contacts is secured to a movable armature 13c able to move in one direction under the effect of a magnetic field imposed for example by a coil and in the opposite direction under effect of a return mechanism 13d. All these elements are mounted in the base 11a.
  • the electrical contactor 10 also comprises a plurality of connection terminals, each of which is of the "pressure" type so as to operate by direct plugging, also known in the field concerned by the term “push-in” in English terminology.
  • Each connection terminal includes on the one hand at least one insertion opening 14 delimited by the cover 11b of the housing 11 for inserting an electrical conductor (for example an electrical wire) towards the inside of the housing 11, on the other hand part of a clamping spring 15 mounted in the base 11a of the housing 11.
  • the clamping spring 15 is arranged so as to open automatically under the action of the insertion of the electrical conductor in the clamping spring 15 and to then exert, by elastic return of its material, an effort of pressure on the electrical conductor after its insertion, this pressure force being able to maintain the electrical conductor in an axially locked state by the clamping spring 15.
  • the clamping springs 15 are mounted in the base 11a of the housing 11.
  • the clamping spring 15 is able to occupy an active configuration ( Figure 10 ) where a clamping limb 15a of the clamping spring 15 can freely move under the effect of the insertion of the electrical conductor between the housing 11 and the clamping branch 15a at the insertion opening 14, from a natural closing position (visible on the Figure 10 ), towards a partial opening position (not shown) of the clamping branch 15a in which it provides a mechanical and electrical contact between the inserted electrical conductor and a conductive strip 16 mounted in the base 11a of the housing 11 and a restraint of the electrical conductor.
  • the fixed portion 13b of the electrical contacts is integral with the conductive strip 16.
  • each contact spring 15 adopts the general shape of a resilient blade which delimits, in addition to the clamping branch 15a, a holding branch 15b which bears against the housing 11 in a constant manner so as to hold the clamping spring 15 in position. position in the housing 11 during changes in position of the clamping branch 15a.
  • the clamping branch 15a is connected to the holding arm 15b by an elastic connection bend 15c.
  • the electric contactor 10 comprises at least one push button 17 for actuating the clamping spring 15.
  • each of the push buttons 17 is mounted in the housing 11 so as to be displaced, under the effect of an external bearing force, of a raised position in which the push button 17 allows the clamping spring 15 to occupy its active configuration to a lowered position towards the inside of the housing 11 in which a bearing surface 17a of the push button 17 presses on the clamping spring 15 in a manner that places the clamping spring 15 in an inactive configuration (visible on the Figures 7 and 11 ) where its clamping branch 15a occupies a fully open position in which the electrical conductor can freely be removed from the connection terminal to the outside of the housing 11.
  • the push buttons 17 are mounted in the cover 11b of the housing 11 at a location allowing them to cooperate in the manner explained in this document with the clamping springs 15 mounted, in turn, in the base 11a of the housing 11.
  • the push button 17 on the right on the Figure 7 and that of the Figure 10 each occupy its raised position, which has the effect of allowing the clamping spring 15 with which it cooperates to occupy its active configuration.
  • the housing 11 and the push button 17 delimit respectively first elements 20a and second elements 20b of the same translational guide system, complementary and capable of cooperating with each other so that the passage from the raised position to the lowered position, and reciprocally, is practiced by a sliding of the pushbutton 17 relative to the housing 11.
  • the second elements 20b are in the form of a rib projecting from the rest of the body of the pushbutton 17.
  • the first elements 20a may be in the form of a lumen formed in the thickness of the cover 11b in which is inserted the push button 17 to slide and provided on one of its faces, a groove into which penetrates and slides the rib integral with the push button 17.
  • the bearing surface 17a is generally inclined in the manner of an inclined face with respect to the direction of sliding of the push button 17, in a manner to cause a progressive separation of the clamping branch 15a during the sliding of the button push 17 to its lowered position.
  • the electric switch 10 it is in particular possible to configure the electric switch 10, by a corresponding adaptation of the height H1 of the push button 17 so that in the raised position, the push button 17 protrudes relative to the housing 11, that is to say say that it exceeds relative to the lid 11b. Therefore, the passage of the clamping spring 15 to the inactive configuration can be done either by pressing the push button 17 by an external tool 18 (such as a screwdriver as is the case on the Figure 9 ), or by manual support, to the lowered position.
  • an external tool 18 such as a screwdriver as is the case on the Figure 9
  • a hollow cavity 19 is formed in an upper face of the push button 17 accessible from the outside, this hollow cavity 19 being adapted to the introduction of a screwdriver tip.
  • a hollow imprint 19 remains optional.
  • the electrical contactor 10 may in particular comprise at least two separate clamping springs 15.
  • a first possibility consists of associating a single push button 17 with a single clamping spring 15, allowing selective actuation of the different clamping springs 15.
  • each push button 17 is configured so as to cooperate with a single spring of 15.
  • a second alternative possibility that makes it possible to reduce the number of parts consists in providing that the push button 17 is configured so as to be able to cooperate with the said at least two clamping springs 15, so as to place them simultaneously in their inactive configurations when the push button 17 is in its lowered position and simultaneously allow them to occupy their active configurations when the push button 17 is in its raised position.
  • the housing 11 and the push button 17 delimit respectively first elements 21a and second elements 21b of the same locking mechanism, complementary and able to cooperate with each other so that the locking mechanism ensures a positive blocking of the push button 17 in its lowered position.
  • positive blocking is meant that the blocking is guaranteed as long as no action is specifically applied by the user to ensure the unlocking.
  • This function can be easily achieved by bracing principles, latching principles, or operating principles in the manner of a retractable ballpoint pen.
  • the first elements 21a of the locking mechanism are in the form of a retaining notch having an inclined bearing face, integral with the cover 11b, and adapted to be overridden by a detent pin forming the second elements 21b of the locking mechanism, this detent pin also having an inclined bearing face.
  • the Figure 10 shows the situation where the detent pin is located above, seen in the sliding direction of the push button 17, the retaining catch.
  • the figure 11 shows the situation where the snap lug is located below the retaining catch, after their respective inclined bearing faces have slid one over the other to cause an overall tilting of the push button 17 allowing that the detent pin extends beyond the retaining catch into the positive locking situation.
  • the locking mechanism can be configured so that the release of the push button 17, to allow its movement to the raised position, results from a tilting movement of the pushbutton 17 along an axis perpendicular to the path of movement of the pushbutton 17 during the transition from the raised position to the lowered position, this tilting movement of the push button 17 is obtained under the effect of an external tilting force applied to the push button 17 by the user. Since the situation of Figure 11 , the tilting has the effect of releasing the snap lug relative to the retaining catch, to allow the push button to return to the situation of the Figure 10 .
  • the movement of the pushbutton 17 from the lowered position to the raised position is achieved by the action of the clamping spring 15 during its return to its active configuration.
  • it could optionally be provided a return mechanism of the push button 17 to its raised position separate from the clamping spring 15.
  • the housing 11 and the push button 17 delimit respectively first elements 22a and second elements 22b of the same retaining system, complementary and able to cooperate by snapping between them so that the system retaining means ensures a retention of the pushbutton 17 in its raised position to avoid an output of the pushbutton 17 towards the outside of the housing 11.
  • the first elements 22a are constituted by a transverse godron secured to the cover 11b, adapted to cooperate by engagement with a slot integral with the push button 17, this slot visible on the Figures 4 , 10 and 11 being constituent of the second elements 22b of the retaining system.

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EP17191279.3A 2017-09-15 2017-09-15 Elektrischer kontaktschalter mit druckknopf zum öffnen der verschlussfeder einer push-in-anschlussklemme Withdrawn EP3457497A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17191279.3A EP3457497A1 (de) 2017-09-15 2017-09-15 Elektrischer kontaktschalter mit druckknopf zum öffnen der verschlussfeder einer push-in-anschlussklemme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17191279.3A EP3457497A1 (de) 2017-09-15 2017-09-15 Elektrischer kontaktschalter mit druckknopf zum öffnen der verschlussfeder einer push-in-anschlussklemme

Publications (1)

Publication Number Publication Date
EP3457497A1 true EP3457497A1 (de) 2019-03-20

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EP17191279.3A Withdrawn EP3457497A1 (de) 2017-09-15 2017-09-15 Elektrischer kontaktschalter mit druckknopf zum öffnen der verschlussfeder einer push-in-anschlussklemme

Country Status (1)

Country Link
EP (1) EP3457497A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023274949A1 (fr) * 2021-06-30 2023-01-05 Hager-Electro Sas Borne de connexion et appareil électrique associé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039232A1 (de) * 2008-08-22 2010-02-25 Phoenix Contact Gmbh & Co. Kg Elektrische Anschlußklemme
DE202008014469U1 (de) * 2008-10-31 2010-03-18 Weidmüller Interface GmbH & Co. KG Anschlussklemme zum Anschluss von Leiterenden
EP3116065A1 (de) * 2015-07-07 2017-01-11 TE Connectivity Germany GmbH Halter für einsteckbare klammer, vorrichtung mit einsteckbarer klammer und elektrisches verbindungselement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008039232A1 (de) * 2008-08-22 2010-02-25 Phoenix Contact Gmbh & Co. Kg Elektrische Anschlußklemme
DE202008014469U1 (de) * 2008-10-31 2010-03-18 Weidmüller Interface GmbH & Co. KG Anschlussklemme zum Anschluss von Leiterenden
EP3116065A1 (de) * 2015-07-07 2017-01-11 TE Connectivity Germany GmbH Halter für einsteckbare klammer, vorrichtung mit einsteckbarer klammer und elektrisches verbindungselement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023274949A1 (fr) * 2021-06-30 2023-01-05 Hager-Electro Sas Borne de connexion et appareil électrique associé
FR3124900A1 (fr) * 2021-06-30 2023-01-06 Hager-Electro Sas Borne de connexion et appareil électrique associé

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