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
  • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
  • H01R4/5016—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone
  • H01R4/5025—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a cone combined with a threaded ferrule operating in a direction parallel to the conductor
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
  • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
  • H01R11/26—End pieces terminating in a screw clamp, screw or nut
• • 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
  • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
  • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
  • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve

Definitions

• the invention relates to an electrical contact element according to claim 1.
• the invention therefore particularly relates to an electrical contact element with a
• Terminal for stranded conductor wherein the contact element has a clamping sleeve which can be transferred from a non-clamping to a clamping position and in the clamping position, the preferably stripped end of a stranded conductor clamped firmly.
• Such contact elements are provided in particular high-current connections with stranded conductor cables both mechanically fixed and electrically reliable with the
• stranded conductors are connected to contact elements with crimped connections or, alternatively, stranded conductors can be connected to contact elements, in which a conical contact part in a contact element is connectable
• FR 618 171 A devices are disclosed which are suitable for clamping electrical conductors for electrical equipment, in which in particular sheathed electrical conductors are clamped in insulating devices for mounting.
• DE 102 20 108 B4 discloses a contact element for connecting a stranded conductor, the contact element being formed from a clamping sleeve and a pin-like contact part which is screwed in the clamping sleeve, wherein the contact part has a conical tip with an angle et to the perpendicular and on the clamping sleeve a funnel-shaped connection end is considered, in which the stranded conductor in an inner
• a conical surface is formed with an angle ß to the vertical and the contact part but only as far into the connection chamber and the inserted therein stranded conductor can be screwed that a minimum overlap remains between the tip of the contact part and the conical surface of the shoulder.
• This technical teaching discloses a contact element in which the stranded conductor end is, however, pressed by the clamping sleeve against a side wall and there is the danger that the ends of the stranded conductors are damaged during pressing or even severed.
• the invention is therefore based on the object to form a detachable connection between a contact element of the type mentioned and a stranded conductor to the effect that Qualcommkete disadvantages are overcome and the stranded wire next to an optimal electrical contact connection, especially safe in vibration influences is maintained and a high pull-out safety Contact element is ensured.
• the basic idea of the invention is to provide a contact element that
• a hollow cylinder is formed and in which a clamping sleeve axially reciprocable from a Portereinmolposition into a clamping position actuated so that a stranded conductor in the Litzenleiterein slaughterposition can be introduced into the contact element and after pressing the clamping element in the Litzenleiterklemmposition of this safely electrically and is held mechanically. It is therefore an electrical contact element for clamping connecting a
• Litzenleiters comprising a hollow cylindrical contact pin having a receiving space having a clamping sleeve portion in which an axially movable back and forth clamping member for clamping receiving a stranded conductor is mounted and by means of a screw coupled to the clamping element of a
• Litzenleiterein Castposition can be operated in a Litzenleiterklemmposition.
• This embodiment has the further advantage that contrary to the solutions known in the prior art, the stranded conductor can be specifically drawn into the receiving space of the contact element, so that it is also ensured that the stranded conductor is held with its stripped end completely in the receiving space of the contact element.
• the clamping element is formed from a clamping cage with a plurality of spring arms extending in the axial direction.
• clamping element z. B. is formed from a slotted clamping cage.
• the electrical contact element is formed so that the inner wall of the receiving space (in which the clamping element is mounted) is formed with a control cam for radially constricting the clamping element.
• Control curve in the sense of the present invention means that the spring arms of the clamping cage are pressed radially inwardly from the LitzenleitereinUSDposition in the Litzenleitereinemmposition along the control cam so that the opening diameter of the opening for receiving the stranded conductor is reduced, whereby the clamping element is constricted ,
• the control curve has the task to operate the movable spring arms of the clamping cage so that the stranded conductor in the transition from the
• the control cam is designed so that upon actuation of the clamping element, the spring arms are actuated inwardly, so that the clamping cage is constricted continuously radially.
• electrical contact element form such that the screw for operating the clamping element in the interior of the hollow-cylindrical contact pin to an internal thread back and forth is mounted screwed.
• the screw is indeed coupled to the clamping element so that they are jointly displaceable axially, but upon rotation of the screw, the clamping element is not rotated.
• electrical contact element form such that the screw has an end-side coupling means, which is coupled to an end-side coupling means on the clamping element, in particular axially coupled.
• the coupling means between the screw and the clamping element is designed so that during rotational movements of the screw while an axial displacement of the clamping element is effected, but not a rotating displacement or co-rotation is prevented.
• the coupling means is formed as an annular circumferential groove in the screw, in which engages the coupling means of the clamping element and a pivot bearing is formed.
• the electrical contact element is formed so that the screw has a frontal tool engagement to rotate the screw (by means of a tool) or to rotate.
• the contact element is formed with an opening at the plug-side end, wherein the tool engagement of the screw from the plug-side end is accessible and operable.
• control cam has at least one conically tapering wall section, whose inner diameter steadily decreases from a first inner diameter R1 to a second inner diameter R2.
• the decrease of the inner diameter R1 to the inner diameter R2 takes place in the axial direction, starting from the connection-side opening or relative thereto offset starting from an offset of the connection-side opening.
• Fig. 1 is a side and sectional view through an embodiment of a
• FIG. 2 shows the electrical contact element from FIG. 1 in another mounting position
• FIG. 3 shows a side view of the electrical contact element according to the invention according to FIG. 1 and FIG. 2 in an exploded view;
• Fig. 4 is a perspective view of the contact element of Fig. 3 and
• Fig. 5 shows another embodiment of a contact element according to the invention.
• Fig. 1 shows an embodiment of an electrical contact element 1 according to the present invention for the clamping connection of a stranded conductor 20 with its stripped stranded conductor end 21.
• the electrical contact element 1 comprises a
• the clamping sleeve portion 4 is the portion of the contact pin 2, in which an axially movable back and forth clamping element 5 is mounted for clamping receiving a stranded conductor end 21.
• the clamping member 5 can be operated by rotating a screw 6 coupled to the clamping member 5 from a strand conductor insertion position as shown in FIG. 1 to a strand conductor clamping position as shown in FIG. It can also be seen in FIGS. 1 to 4 that the clamping element 5 is formed with an end-side coupling means 12 (annular collar) which engages in a groove-shaped recess, namely the end-side coupling means 11 of the screw 6.
• Screwing VA is located.
• the inner wall 7 of the clamping sleeve section 4 is formed with a control cam 8.
• control cam is formed from a conically tapered wall section whose inner radius is defined by a first wall section
• Inner diameter R1 decreases to a second inner diameter R2 and then merges into a cylindrical portion with the diameter R2.
• the spring arms extend, as can be seen in FIGS. 3 and 4, with their spring arm end 24 bent outwards, so that the insertion-side end 25 of the clamping cage 9 has a
• Clamping cage 9 is coupled and can via the plug-side opening 15 with a tool which engages in the tool engagement 19, are rotationally actuated and actuated by the Litzenleiterein technologicalposition shown in Fig. 1 in the Litzenleiterklemmposition shown in Fig. 2, in which the screw 6 to is rotated to stop 22 or in a position therebetween and is screwed along the internal thread 14 in the axial direction towards the plug-side end 16 of the contact pin 2.
• üer clamping cage 9 is at the connection-side end 18 via the opening 17 in the
• Receiving space 3 introduced, wherein when screwing the screw 6 in the axial direction as described above in the direction of the plug-side opening 15 touches, the outer sides of the spring arms 23, the inner wall 7 of the receiving space 3 and slide along along the control cam 8 along, where they in the wake of ever smaller
• the stranded conductor end 21 is clamped in the clamping cage 9. Furthermore, it is ensured that when screwing the stranded conductor 20 is pulled into the receiving space 3.
• FIG. 5 shows an alternative exemplary embodiment of an electrical contact element 1 according to the present invention for clamping a stranded conductor 20 with its stripped stranded conductor end 21.
• the electrical contact element 1 comprises a hollow cylindrical contact pin 2 with a receiving space 3
• the clamping sleeve section 4 is here axially movable relative to the contact pin 2 by means of actuation of the screw 6 movable.
• the clamping sleeve section 4 can hereby in turn constrict the clamping element 5 for clamping receiving a stranded conductor end 21, when it is shifted in the view shown in Fig. 5 "down".
• an electrical contact element 1 is proposed in which the clamping element 5 is preferably integrally connected to the contact pin 2 and the clamping sleeve element 4 is arranged relative to the clamping element 5 in its axial position adjustable.
• clamping sleeve element 4 preferably has a plurality of end-side arms 4 a, which dip into corresponding slots 4 b on the contact pin 2.
• the arms serve as an axial bearing and also as anti-rotation.

Landscapes

• Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
• Suspension Of Electric Lines Or Cables (AREA)
• Processing Of Terminals (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=51535300

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Citations (9)

• 2013
  • 2013-08-24 DE DE201310014200 patent/DE102013014200A1/de not_active Withdrawn
• 2014
  • 2014-08-21 WO PCT/DE2014/100297 patent/WO2015027991A1/de active Application Filing
  • 2014-08-21 EP EP14761945.6A patent/EP3036798A1/de not_active Withdrawn
  • 2014-08-21 CN CN201490001119.4U patent/CN206194983U/zh not_active Expired - Fee Related

Patent Citations (9)

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