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
• • 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
  • H01R13/02—Contact members
  • H01R13/10—Sockets for co-operation with pins or blades
  • H01R13/11—Resilient sockets
  • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

• the invention relates to a contact spring arrangement for self-locking contacting of a wire of an electrical conductor, with a support wall formed from a conductive material, a contact spring which has a base leg held stationary in relation to the support wall and a clamping leg which, together with the support wall, extends in the direction of insertion forms a tapered plug-in receptacle for the core of the conductor.
• the support wall may be part of a conductive structure, such as a power rail or connector contact.
• a stripped end of the core e.g. a copper core
• the end of the wire slides onto the edge of the clamping leg and guides it
• a release element In order to release the contact again, a release element is moved in the direction of insertion, so that an actuating arm is on the flank of the
• Clamp leg runs up and bends it back. This releases the core of the conductor so that the conductor can be withdrawn from the socket.
• the base leg of the contact spring is riveted to part of the busbar, so that the contact spring is held securely in position even under the action of high tensile forces.
• the object of the invention is to create a contact spring arrangement that is easier to assemble.
• the base leg of the contact spring merges into a holding leg which is inserted into a receiving shaft which is stationary in relation to the support wall and has two latching lugs which project in opposite directions transversely to the base leg and which latch with counter-contours on the walls of the receiving shaft are.
• the contact spring can be inserted and fixed in the structure forming the support wall in a simple linear movement, in which the holding leg is inserted into the receiving shaft until the latching lugs automatically latch into the counter-contours.
• the assembly process can therefore be accomplished with a simply constructed automatic assembly machine that does not need to have a complex movement scheme and can therefore work with a high number of cycles.
• the latching lugs and the counter-contours can be designed in such a way that the latching withstands the extraction forces to be expected during regular operation, which have the tendency to pull the holding leg out of the receiving shaft again. Despite the simple assembly process, the contact spring can therefore be securely fixed.
• the support wall is part of an electrically conductive structure, which also forms the receiving shaft for the holding leg of the contact spring.
• the electrical contact between the contact spring and the conductive structure is thus improved at the same time by the latching.
• the receiving shaft can be formed, for example, by two parallel grooves into which two latching arms of the fork-shaped holding leg engage.
• the grooves can easily be made by machining.
• the counter-contours can be formed, for example, by an end face in which the grooves end.
• the receiving shaft and the counter-contours can also be formed by reshaping the metal body, for example by producing at least part of the conductive structure from a profile strand with a corresponding groove profile.
• the contact spring can be manufactured simply and efficiently as a stamped and bent part.
• the latching lugs can then be produced in any desired shape in one operation during punching.
• the latching lugs can be designed as barbs, so that a form-fitting or self-locking locking of the holding leg in the receiving shaft is made possible.
• the direction of insertion in which the holding leg is inserted into the receiving shaft, is parallel to the direction of insertion of the plug-in receptacle for the wire of the conductor.
• the contact spring arrangement often also has an actuator which can be moved in this insertion direction and which is used to bend the clamping leg of the contact spring away from the wire of the conductor and thus release the clamping when the wire is to be released.
• a further rationalization of automated production is thereby achieved allows the movements to be in the same direction when assembling the actuator and when assembling the contact springs.
• the direction of insertion of the retaining leg runs at right angles to the direction of insertion of the socket.
• the tensile forces that act on the contact spring when you try to pull the core of the conductor out of the plug-in socket against the clamping force are absorbed in a form-fitting manner by the engagement of the retaining leg in the receiving shaft, so that even a relatively weak latching is required to fix the holding leg is sufficient.
• FIG. 1 shows a perspective view of a contact spring arrangement according to the invention
• FIG. 2 shows a perspective view of an electrically conductive carrier structure of the contact spring arrangement
• FIG. 3 shows a section through the support structure in the section plane III in FIG. 2;
• FIG. 4 shows an axial section through a contact spring
• FIG. 5 shows the contact spring in a view from the left in FIG. 4;
• FIG. 10 is a side view of part of a support structure for the contact spring of FIG. 9;
• Fig. 11 is an exploded view of the contact spring and the
• the contact spring arrangement shown in FIG. 1 has a contact spring 10 made of metal and an electrically conductive support structure 12, which in the example shown forms a socket contact 14 and a cage 16 axially adjoining it, which is also referred to as a busbar.
• the contact spring 10 has a clamping leg 18 and a base leg 20 which is connected to the clamping leg 18 via a U-bend and merges into a flat holding leg 22 at the opposite end.
• the contact spring 10 With its flat leg 22, the contact spring 10 is held on the cage 16 in such a way that the clamping leg 18 protrudes obliquely into the interior of the cage and with one of the contact springs opposite
• Supporting wall 24 of the cage forms a plug-in receptacle 26 for a core 28 of an electrical conductor, which is mechanically fixed in the cage and electrically connected to the support structure 12 in this way.
• the wire 28 is clamped between the clamping leg 18 and the support wall 24 and, since the clamping leg acts obliquely on the wire, the wire is fixed in the cage in a self-locking manner when a tensile force acts on the wire 28 in the pull-out direction.
• the cage 16 forms a receiving shaft 30 which extends in the direction of insertion of the plug-in receptacle 24 and into which the fork-shaped holding leg 22 of the contact spring 10 is inserted from above in FIG.
• the receiving shaft 30 is formed by two parallel grooves in the outer surfaces of the cage 16, which are delimited by a bracket 32 on the side facing away from the plug-in receptacle.
• This console is connected to the main part of the cage 16 only via a web 34 which extends through a slot 36 between the fork arms of the retaining leg 22.
• the fork arms of the holding leg 22 each form two latching lugs 38 which are directed toward one another and which engage under the web 34 and thus fix the holding leg 22 in the receiving shaft 30 in a latching manner.
• FIG. 2 the support structure 12 is shown without the contact spring 10, so that the receiving shaft 30 can be seen more clearly.
• FIG. 3 shows a cross section of the cage 16 in the sectional plane III indicated in FIG.
• the cage or the entire support structure can be made from a profile strand that has the profile shown in FIG.
• FIG. 4 the contact spring 10 is shown in an axial section
• Fig. 5 shows a front view of the base leg 20 and the holding leg 22 of the contact spring.
• the outline of the slot 36 and the locking lugs 38 designed as barbs can be seen in FIG. 5 .
• FIG. 6 shows an enlarged view of the contact spring 10 and the supporting structure 12 in a state before the retaining leg is inserted into the receiving slot.
• the support structure 12 is shown here in a section in a sectional plane that passes through the web 34 .
• FIG. 7 shows the contact spring 10 and the support structure 12 in the state in which the free end of the holding leg 22 enters the receiving shaft 30 and the flanks of the latching lugs 38 run onto the upper edges of the web 34 .
• the clamping leg of the contact spring already engages in the socket 24, as a result of which the contact spring is guided and its slot 36 is centered on the web 34. If the contact spring 10 is then pressed further down, a somewhat greater resistance must be overcome, since the fork arms of the holding leg 22 are elastically spread apart by the web 34 until the latching lugs 38 can slide over the web.
• FIG. 8 shows the end state in which the fork arms of the holding leg 22 have spring back elastically into their original position and now reach under the underside of the web 34 .
• This underside of the web thus forms a counter-contour for the latching lugs 38.
• This counter-contour and the upper sides of the latching lugs 38 lying against it run at right angles to the direction of insertion, so that the retaining leg 22 is positively locked in its receiving shaft when an upward pull-out force acts on the contact spring.
• Fig. 9 to 12 a modified embodiment of the contact spring arrangement is shown.
• FIG. 9 shows an axial section through a contact spring 10', which differs from the previously described contact spring 10 in that it has an extended base leg 20', which at the free end merges into a holding leg 22' angled at right angles to the side of the clamping leg 18 .
• 10 shows the upper part of an associated supporting structure 12'. In the region of the lower end of a cage 16'5, this support structure forms a horizontally extending receiving shaft 30' for the holding leg 22'.
• the upper part of the cage 16' is connected to the lower part of the cage, which at the same time forms the upper end of the socket contact 14, only by a short cylindrical web 34'.
• the holding leg 22' is again designed in the shape of a fork and has a slot 36' with two bulges 40 in the shape of a segment of a circle, which are complementary to the peripheral surface of the web 34'. The ends of these bulges 40 located towards the free end of the holding leg form latching lugs 38'.
• the latching lugs 38' engage behind the peripheral surface of the web 34, which thus forms a counter-contour for the latching lugs.

Landscapes

• Coupling Device And Connection With Printed Circuit (AREA)
• Connector Housings Or Holding Contact Members (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=80999778

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Family Cites Families (10)

• 2021
  • 2021-03-10 DE DE102021105734.5A patent/DE102021105734A1/de active Pending
• 2022
  • 2022-02-28 EP EP22713856.7A patent/EP4305711A1/de active Pending
  • 2022-02-28 CN CN202280017964.XA patent/CN116964866A/zh active Pending
  • 2022-02-28 KR KR1020237033738A patent/KR20230152737A/ko unknown
  • 2022-02-28 WO PCT/DE2022/100162 patent/WO2022188920A1/de active Application Filing

Also Published As

Similar Documents

Legal Events