EP3477775A2 - Borne de connexion de conducteur et insert de contact - Google Patents

Borne de connexion de conducteur et insert de contact Download PDF

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Publication number
EP3477775A2
EP3477775A2 EP18202606.2A EP18202606A EP3477775A2 EP 3477775 A2 EP3477775 A2 EP 3477775A2 EP 18202606 A EP18202606 A EP 18202606A EP 3477775 A2 EP3477775 A2 EP 3477775A2
Authority
EP
European Patent Office
Prior art keywords
clamping
leg
conductor
spring
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.)
Granted
Application number
EP18202606.2A
Other languages
German (de)
English (en)
Other versions
EP3477775A3 (fr
EP3477775B1 (fr
Inventor
Thomas Witte
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.)
Wago Verwaltungs GmbH
Original Assignee
Wago Verwaltungs 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 Wago Verwaltungs GmbH filed Critical Wago Verwaltungs GmbH
Publication of EP3477775A2 publication Critical patent/EP3477775A2/fr
Publication of EP3477775A3 publication Critical patent/EP3477775A3/fr
Application granted granted Critical
Publication of EP3477775B1 publication Critical patent/EP3477775B1/fr
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
    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
    • 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
    • H01R4/4852—Means for improving the contact with the conductor, e.g. uneven wire-receiving surface

Definitions

  • the invention relates to a conductor terminal for connecting an electrical conductor.
  • the invention also relates to a contact insert of such a conductor terminal, which has at least one bus bar and a clamping spring.
  • a conductor terminal with a contact insert is, for example, from the DE 10 2005 014 075 B3 known.
  • the invention has for its object to further improve a conductor terminal and a contact insert for it.
  • a conductor connection terminal having at least one housing and at least one clamping spring, which serves for fixing the clamping spring bearing limb, adjoining the plant leg and bent away from the plant leg connecting leg, an adjoining the connecting leg spring bow and a to the spring bow adjoining clamping leg adapted for clamping an electrical conductor at a nip
  • the connecting leg has at least one conductor passage opening portion through which an electrical conductor can be led from a conductor insertion opening of the housing through the conductor passage opening portion to the nip
  • the Conductor terminal has an actuating element for actuating the clamping leg, which has a manually operable outside the housing manual operating area and a for deflecting the Klem Tongue equipped actuating tappet, wherein the actuating plunger extends through an actuating tappet passage opening portion in the connecting leg.
  • the actuating tappet passage opening area in the connecting leg can, for example, be formed as a window-like passage opening.
  • the clamping leg is thus seen in Leitereinsteckides on the side facing away from the connecting leg.
  • a conductor terminal with rear conductor insertion option can be further developed in a manufacturing and application friendly manner.
  • a rear conductor insertion possibility is referred to an embodiment of a conductor terminal, in which the electrical conductor is inserted from the spring-bow side of the clamping spring and just extends through a part of the clamping spring.
  • the present invention has the advantage that such a conductor terminal can be operated manually in a simple and comfortable manner.
  • the manual actuation region can be designed, for example, as an actuation push-button projecting out of the housing.
  • the manual operating portion is mechanically coupled directly or indirectly to the actuating tappet.
  • the actuating element then extends with its actuating tappet through the recess in the connecting leg, for example, from the manual operating area in the direction of the clamping leg, and can therefore act on the clamping leg mechanically with appropriate manual actuation and deflect accordingly.
  • the actuating plunger may protrude substantially as far as the clamping leg and, depending on the embodiment, also bear against it in the unactuated state of the actuating element or end at least shortly before it.
  • the clamping leg By pressing the clamping leg, the nip can be opened so that an electrical conductor are removed from the nip can or can be easily introduced.
  • the clamping spring and in particular the clamping legs can act as a mechanical return element of the actuating element, so that no separate return spring is required.
  • the clamping spring can be designed differently. It may, for example, be substantially loop-shaped.
  • the connecting leg may be bent away from the abutment leg at an oblique angle or nearly at right angles.
  • the clamping leg can in turn extend back in the direction of the plant leg.
  • the clamping leg may have a clamping edge at the free end, which, at least when no electrical conductor is inserted into the clamping point, may be disposed near the abutment leg.
  • the clamping point may be formed at least partially by the clamping edge of the clamping leg.
  • the conductor passage opening region and the actuating tappet passage opening region form a common opening in the connection leg, e.g. an opening completely surrounded by the material of the connecting leg.
  • a common opening in the connection leg e.g. an opening completely surrounded by the material of the connecting leg.
  • one and the same recess can be used in the connecting leg for the passage of the electrical conductor and the actuating plunger. An unnecessary weakening of the connecting leg can thus be avoided.
  • Another advantage is that only one recess has to be made to fulfill these functions.
  • connection leg in addition to the conductor passage opening portion, there may be a separate recess for passing the actuating tappet in the connection leg, e.g. such that the recess for passing the actuating tappet is separated from the conductor passage opening area by a transverse web.
  • the conductor connection terminal has at least one contact insert which, for example, has separate, for contacting an electrical conductor arranged contact elements comprising at least the clamping spring and a busbar, wherein between the clamping leg and the busbar, the nip is formed for clamping the electrical conductor.
  • the busbar may extend through the conductor passage opening area or may already end there before.
  • the clamping spring can be fastened with its bearing limb to the busbar or to another component of the conductor connection terminal.
  • the abutment leg can be arranged on the side facing away from the clamping leg of the busbar, so that the busbar extends at least with a portion between the plant leg and the clamping leg.
  • the actuating element has a guide portion for the defined mechanical guidance of the actuating element, which is arranged at least in part from the connecting leg from behind the spring bow.
  • the guide portion is located at least partially above the spring bow, when the plant leg is arranged below.
  • the guide portion of the actuating element makes it possible to mechanically guide the actuating element in a defined manner, for example in a guide channel of the housing. If the actuating element is designed as a linearly movable actuating element, for example as an actuating pushbutton, a linear guide for the actuating element can be formed by the guide section and the guide channel provided in the housing for receiving the guide section.
  • the inner end of the guide channel in the housing also forms a depth stop for the recorded in the guide channel guide portion of the actuating element. In this way, a protection against excessive swiveling or overpressing of the clamping leg of the clamping spring is advantageously ensured.
  • At least a partial region of the guide section extends into a slot-shaped recess of the clamping spring, in particular a slot-shaped recess arranged in the region of the spring bow.
  • the portion of the guide section extending into the slot-shaped recess of the clamping spring may, for example, be viewed as vertically downwards, ie. in the direction of the plant leg out, extending longitudinal ridge be formed, so that the guide portion has a T-shape in cross section together with the longitudinal ridge.
  • the mechanical stability of the actuating element, in particular in the guide section, can be increased with little effort.
  • a stiffening of the actuating element is effected, through which the actuating element in the upper region, i. in the area of the spring bow, can be kept flat. This in turn has the advantage that space can be saved in the realization of the conductor connection terminal and the housing can be kept small.
  • the actuating element has a base portion, protrude from the particular U-shaped and spaced apart from each other, the actuating plunger and the guide portion in the direction of the clamping spring.
  • This allows easy manufacture of the actuator, e.g. in one piece from a material, e.g. from an insulating material.
  • the manual operating region of the actuator is mechanically rigidly coupled to the actuating tappet, e.g. over the base portion of the actuating element.
  • a conductor terminal with at least one housing and at least one clamping spring, which serves for fixing the clamping spring bearing limb, adjoining the plant leg and bent away from the plant leg connecting leg, an adjoining the connecting leg spring bow and a clamping leg adjoining the spring bow adapted to clamp an electrical conductor to a nip
  • the connecting leg has at least one conductor passage area through which an electrical conductor leads from a conductor insertion opening of the housing through the conductor passage opening area to the nip in particular conductor terminal according to one of the preceding claims
  • the housing is formed of at least two separate parts, which are connectable together to form the housing, wherein at least a part of the housing has a conductor guide extension, which extends through the conductor passage opening area.
  • the conductor terminal can be further improved in terms of production engineering and in terms of ease of use. Faulty insertion of the electrical conductor or unwanted fraying individual strands of a stranded conductor can be effectively avoided.
  • the mounting of the conductor terminal is still easy, since the conductor guide extension does not need to be mounted as a separate element, but is already part of the housing so that when assembling the parts of the housing automatically the conductor guide extension is placed in the right place.
  • the conductor guide extension is arranged axially aligned with the conductor passage opening region. As a result, the user-friendly insertion of an electrical conductor is further promoted.
  • a contact insert of a conductor terminal in particular a conductor terminal of the type described above, wherein the contact insert has at least one busbar and a clamping spring, wherein the clamping spring has a bearing leg which is mechanically coupled to the busbar, wherein the busbar has at least one contact tongue and at least one fastening tongue, between which the plant leg is clamped.
  • the fastening tongue can be spaced from the contact tongue by means of a region formed with two bending sections which are bent in opposite bending sense such that a part of the fastening tongue runs substantially parallel to the contact tongue and forms a fastening clearance between contact tongue and fastening tongue into which the contact leg can be inserted is.
  • the busbar along a Porterereinsteckraum L left and right side of the contact tongue each having a fastening tongue and the plant leg has a terminal projecting retaining tongue, which extends between the fastening tongues of the busbar.
  • the fixing of the abutment leg to the busbar can be done symmetrically by the two fastening tongues.
  • the assembly is simplified because the plant leg can be easily inserted with its protruding retaining tongue between the attachment tongues.
  • the clamping spring has an additional recess in the bearing arm, through which the clamping leg or at least one clamping edge of the clamping leg can be passed.
  • the clamping leg has a tapering region in the transition region to the spring bow, in which the material width of the clamping leg is less than in more remote from the spring bow areas of the clamping leg.
  • the Spring constant of the clamping spring in the region of the clamping leg at least substantially to the spring constant of the clamping spring in the region of the connecting leg, where the conductor passage opening region is present adapted.
  • the clamping leg can have a greater width, in particular in the region of its clamping edge, than in the tapering area. In this way, a relatively wide clamping edge is provided, which facilitates the clamping of an electrical conductor.
  • the clamping leg has a smaller material width outside the tapering region than the clamping spring in the region of the spring bow.
  • the spring bow is relatively wide and thus formed rigid in comparison to other areas of the clamping spring and deforms only slightly at a deflection of the clamping leg.
  • the housing of the conductor connection terminal may be an insulating material housing.
  • any other combination of the aforementioned conductor terminal with features of the aforementioned contact insert and vice versa is advantageous.
  • the indefinite term "a” does not mean a number word. So if, for example, If a component is mentioned, this is to be interpreted in the sense of "at least one component”. Insofar as angle data are given in degrees, these refer to a circular dimension of 360 degrees (360 °).
  • the in FIG. 1 On the left illustrated contact insert has a busbar 3 and a clamping spring 4.
  • the busbar 3 is formed of a good electrically conductive material.
  • the clamping spring 4 is also made of electrically conductive material formed, but in addition has special spring properties in the sense of a spring steel.
  • the busbar 3 has a base region 30, from which a contact tongue 31 and in each case laterally to the left and to the right thereof two bent fastening tongues 33 protrude.
  • the contact tongue 31 has an upwardly bent raised portion 32, which forms a clamping point for an electrical conductor together with a clamping edge 44 of the clamping spring 4.
  • the contact tongue 31 still extends slightly beyond the raised area 32.
  • the clamping spring 4 which in the FIG. 1 additionally slightly smaller than individual component shown on the right, has a plant leg 40, a connecting leg 41, a spring bow 42 and a clamping leg 43, which are arranged in the above-mentioned order one behind the other along the clamping spring 4.
  • the clamping leg 43 has at the free end a clamping edge 44. Starting from the plant leg 40 of the connecting leg 41 is bent upward, for example, obliquely upward.
  • the clamping leg 43 connected to the connecting leg 41 via the spring bow 42 can run approximately parallel to the connecting leg 41, at least if no electrical conductor is clamped.
  • the connecting leg 41 has an inner window-like recess formed as a common opening 46, which has a conductor passage opening portion 46a and an actuating tappet passage opening portion 46b.
  • a common opening 46 Through the conductor passage opening portion 46, an electrical conductor in the conductor insertion direction L can be inserted, as it were, rearward through the connection leg 41 to the nip between the clamping edge 44 and the raised portion 32.
  • the common opening 46 is formed relatively long, for example, substantially over the entire length of the connecting leg 41. Such a longitudinal extent is actually not required for the implementation of an electrical conductor.
  • a part of the common opening 46 namely the actuating tappet passage opening area, becomes 46b, at the same time used as a passage opening for a part of an actuating element 5.
  • the clamping spring 4 has an additional recess 47 in the region of the abutment leg 40.
  • This additional recess 47 is used for the production process of the clamping spring 4 in a bending device. Due to the additional recess 47, it is possible, the necessary bias of the clamping spring 4 in the in FIG. 1 left position when no electrical conductor is inserted to produce. The clamping leg 43 is bent over in this bending process through the additional recess 47 so that it receives its necessary in the desired later starting position bias.
  • a region of the abutment limb 40 which is narrower than the remaining regions of the abutment limb 4 and forms a retaining tongue 48 is formed. If the clamping spring 4 with the busbar 3 in the in FIG. 1 mated on the left, the contact tongue 31 lies with its underside on the upper side of the abutment leg 40. The retaining tongue 48 extends between the fastening tongues 33 therethrough. In this position, the fastening tongues 33 are also on the opposite side of the contact tongue of the support leg 40, in the opposite of the retaining tongue 48 widened area of the support leg 40. As in the example FIG. 2 It can also be seen that the free end regions of the fastening tongues 33 run approximately parallel to the tongue 31 after the bent S-shaped bending region.
  • clamping spring 4 in the transition region from the spring bow 42 to the clamping leg 43 has a taper section 45, which is formed as a section with reduced material width compared to the material width of the remaining parts of the clamping leg 43.
  • the contact insert for removing or inserting an electrical conductor can be opened in the nip, ie the clamping leg 43 with his Clamping edge 44 can be bent away from the raised portion 32, an actuating element 5 is provided, which in the FIG. 2 is recognizable.
  • the actuating element 5 may be formed, for example, in the form of a linearly displaceable pusher.
  • the actuating element 5 may also be designed differently, for example as a pivotable actuating element, for example as an actuating lever. In the following embodiments, it is assumed that an actuating element 5 in the form of a linearly displaceable pusher.
  • the actuating element 5 has a base portion 50 from which an actuating tappet 51 protrude approximately in a U-shape in a side view in the side view and a guide section 52 in the upper area. Further, from the base portion 50, a manual operation portion 53 protrudes to the right. Like in the FIG. 2 can be seen, the actuating plunger 51 extends through the upper portion of the actuating plunger passage opening portion 46 through to the clamping leg 43. Alternatively, it would also be possible to provide the conductor passage opening portion 46 only in the lower region where an electrical conductor is to be guided to the nip, and to provide a separate upper recess which serves as a passage opening for the actuating plunger 51.
  • the FIG. 3 shows a conductor terminal 1 with a housing 2.
  • the housing 2 or at least largely in the housing 2, the previously with reference to the FIG. 2 arranged elements, namely the contact insert with the busbar 3 and the clamping spring 4, and the actuating element 5.
  • the housing 2 has a conductor insertion opening 20 through which an electrical conductor can be inserted into the housing 2 and can be guided to the nip.
  • the housing 2 also has an actuator passage opening 21 through which the manual operation area 53 projects and in which FIG. 3 illustrated unactuated state of the actuating element 5 protrudes from the housing 2. In this state, the clamping edge 44 of the clamping spring 4 bears against the raised region 32 of the busbar 3. In this state, therefore, the nip is closed.
  • a guide channel 22 is further provided, in which the guide portion 52 of the actuating element 5 is guided.
  • the actuating element 5 is securely mounted in the housing 2 and can be operated with little effort and without tilting.
  • the housing 2 may be formed in several parts. In the illustrated embodiment, the housing 2 is formed in two parts, with a main housing part 23 and a closure member 24.
  • the closure member 24 has latching elements 25, with which the closure member in the sense of a catch attachment to the main housing part 23 can be fixed. It can also be seen that the actuating element 5 rests at least in sections on the closure part 24 with its bottom, which is visible in the view, and is additionally guided on the latter
  • FIG. 5 shows an embodiment of the contact insert, consisting of a busbar 3 and a clamping spring 4, which differs from the previously described contact insert in that the clamping spring 4 has a slot-shaped recess 49 in the region of the spring bow 42.
  • the spring bow 42 is divided by the slot-shaped recess 49 in two adjacent spring bow legs.
  • FIG. 6 shows a similar view as the FIG. 2 , wherein of the contact insert of the FIG. 5 is assumed. That in the FIG. 6 illustrated actuator 5 differs from the previously explained embodiment in that a longitudinal web 54 is present in the region between the guide section 52 and the actuating tappet 50, in particular predominantly on the guide section 52 within the U-shaped region. This longitudinal web 54 serves to stiffen the actuating element 5, so that the actuating element 5 can not be pressed. By this stiffening, the actuating element 5 can also be kept relatively flat in the area above the spring bow 42, so that space can be saved. As can be seen, the longitudinal web 54 can dip at least in the actuated state of the actuating element 5 in the slot-shaped recess 49 and is recorded there.
  • FIG. 7 shows a conductor terminal 1 in one with the FIG. 4 comparable representation, the basis of the FIG. 6 previously explained elements within the housing 2 are arranged.
  • the FIG. 8 shows a conductor terminal, which is essentially the FIG. 3 corresponds, is looking in a perspective view obliquely on the conductor insertion opening 20.
  • the closure member 24 has a conductor guide extension 26, of which in the illustration of FIG. 8 only one (right) half is recognizable.
  • the conductor guide extension 26 may be formed symmetrically, eg sleeve-shaped.
  • the conductor guide extension 26 extends through the conductor passage opening region 46.
  • the conductor guide extension 26 forms a kind of extension of the conductor insertion opening 20.
  • FIG. 9 shows the closure member 24 in detail view. Visible is the integrally formed on the closure member 24 conductor guide extension 26, which forms a conductor guide channel, which may have a taper in the region 27.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Clamps And Clips (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP18202606.2A 2017-10-30 2018-10-25 Borne de connexion de conducteur et insert de contact Active EP3477775B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202017106590.1U DE202017106590U1 (de) 2017-10-30 2017-10-30 Leiteranschlussklemme und Kontakteinsatz

Publications (3)

Publication Number Publication Date
EP3477775A2 true EP3477775A2 (fr) 2019-05-01
EP3477775A3 EP3477775A3 (fr) 2019-06-05
EP3477775B1 EP3477775B1 (fr) 2023-04-05

Family

ID=63998610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18202606.2A Active EP3477775B1 (fr) 2017-10-30 2018-10-25 Borne de connexion de conducteur et insert de contact

Country Status (3)

Country Link
EP (1) EP3477775B1 (fr)
CN (1) CN109728450B (fr)
DE (2) DE202017106590U1 (fr)

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DE102010062580A1 (de) * 2010-12-08 2012-06-14 Bayerische Motoren Werke Aktiengesellschaft Hochstrom-Steckverbinder
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CN109728450A (zh) 2019-05-07
DE202017106590U1 (de) 2019-01-31
CN109728450B (zh) 2023-08-15
DE102018122806A1 (de) 2019-05-02
EP3477775A3 (fr) 2019-06-05
EP3477775B1 (fr) 2023-04-05

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