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
• • 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
  • H01R13/22—Contacts for co-operating by abutting
  • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
• • 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
  • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
  • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
  • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
• • 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
  • H01R4/484—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
  • H01R4/28—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
• • 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

Definitions

• the invention relates to a terminal component with a Isolierstoffgeophuse and at least one spring clip for clamping an electrical conductor, wherein the spring terminal a busbar piece and in L Lucassersteckungs- direction with a free terminal end in the direction of the busbar piece extending and forming a terminal point for the electrical conductor against the conductor rail piece has resilient clamping spring, and wherein in the insulating housing at least one leading to an associated terminal point conductor insertion opening and one arranged next to a conductor insertion opening and provided for insertion of an actuating tool and opening the associated clamping spring with the actuating tool actuating channel.
• Such terminal components are sufficiently well known, for example, as modular terminal blocks or as input / output modules of a fieldbus system which can be connected to field devices via the spring terminals and are used in particular in automation technology.
• the spring terminals with their clamping spring provide a long-term stable, vibration-proof contact for an electrical conductor. To open the nip, however, an actuation of the clamping spring against the spring restoring force is necessary.
• clamping springs for example, from DE 299 15 515 Ul, EP 0 335 093 Bl, GB 1 593 321, AT 376 524 B and DE 28 26 978 C2 in the insulating housing integrated operating lever known in the direction of the width of the clamping springs Press on the clamping spring next to the terminal point for the electrical conductor.
• the actuating direction of the actuating lever differs from the conductor insertion direction, so that the spring terminals occupy a relatively large width.
• BEST ⁇ TIGUNGSKOPIf known elements in which obliquely to the conductor insertion opening actuating channels are provided to actuate a clamping spring.
• the clamped by the main axes of the conductor insertion openings and the actuating channel in each case and the clamping spring in the region of the clamping point transverse to the longitudinal direction over the width of the clamping spring intersecting planes are at an angle to each other.
• the actuating channels assigned to the conductor insertion openings occupy a relatively large space.
• DE 195 04 092 B4 discloses a spring clip for an electrical conductor, in which a conductor insertion opening is arranged in the deflection of a tension spring parallel to an actuating channel. While the conductor insertion opening opens into a clamping portion at the free end of the tension spring, the actuating channel is aligned on an opposite, adjoining the one spring bow actuating portion of the tension spring to open the tension spring from there with a pressure pin.
• the actuating channel opens in a direction transverse to the longitudinal direction of the nip for the electrical conductor adjacent operating portion of the clamping spring, so that nip and operating portion lie on the width of the clamping spring next to each other and that by the main axes of the conductor insertion openings and the actuating channel are respectively clamped and transverse to the longitudinal direction of the clamping spring in the region of the clamping point, the width of the clamping spring intersecting planes are approximately parallel to each other.
• Such actuation by the narrow side flanks of a screwdriver also makes it possible that the cross section of the actuating channel can be transverse to the longitudinal direction of the free end of the clamping spring in the direction of the width of the clamping spring narrower than transverse to the width of the clamping spring. As a result, the size is further reduced.
• At least one clamping spring is bent from a contact arm extending essentially parallel to the main axis of the conductor insertion opening and resting against the insulating housing with a spring bow. Then a clamping leg extends in the direction of the busbar, which adjoins the spring bow.
• a cage tension spring essentially simply U-shaped bent clamping spring is with the plant leg, or the clamping leg opposite, set in the insulating housing and possibly on or in the busbar.
• the free end of the abutment leg can be inserted into an opening in the busbar. be his.
• the clamping leg of the at least one clamping spring can be bent back in the direction of the abutment leg in the mouth region of the actuating channel, while the clamping section of the clamping spring adjacent to the width of the clamping spring extends away from the abutment leg.
• the clamping spring Seen over the width of the clamping spring in the region of the clamping point, the clamping spring is thus divided into two and has a clamping section optimized for clamping the electrical conductor and an actuating section optimized for actuation with an actuating tool via the actuating channel.
• abutment leg By bending back the abutment leg in the region of the actuating portion, the deflection of the spring can be limited.
• the bent-back portion of the abutment leg thus forms an overload protection by this abuts in the actuated state of the clamping spring to the plant leg or the insulating material.
• an improved guidance of an actuating tool is achieved by the bending back of the clamping leg, so that the risk of jamming of the actuating tool is reduced by the clamping spring.
• an overload stop is provided on the insulating housing or a busbar section, which is adapted to the clamping point forming free terminal end of the clamping spring such that in an attempt to excessive deflection of the clamping spring by an electrical conductor, the free terminal end abuts the overload stop.
• the terminal device may be an active or passive device.
• two or more spring terminals may be simply connected together by the one common bus bar to thereby electrically connect conductors clamped to the spring terminals.
• a terminal component may be, for example, an input / output module for clamping field devices, wherein on the side surfaces of the insulating housing terminal contacts for establishing a data bus and / or a power supply are arranged when two or more terminal components are snapped directly adjacent to each other on a top hat rail , It is advantageous in this case if the insulating housing has snap-in hooks for latching the terminal component onto a DIN rail.
• Figure 1 a - d - cross-sectional view through a terminal device in part cut in the unactuated state, when actuated by a screwdriver, after plugging in an electrical conductor and in the final clamping state;
• Figure 2 Cross-sectional view of a terminal component in partial section with bent back in the direction of plant leg clamping leg in the region of the actuating portion;
• FIG. 3 shows a longitudinal section through the terminal component from FIG. 2 in FIG.
• Figure 4 top view of the terminal components of Figures 1 to 3 in the region of a clamping point
• Figure 5 top view of a conventional terminal device in
• FIGS. 1a) to d) show a partial section through a terminal component 1 in cross-section with an actuating sequence.
• Figure Ia) shows the partial section of the terminal component 1 in the unactuated state. It can be seen that in a Isolierstoffgeophuse 2, a conductor insertion opening 3 is introduced, which leads to a spring clip 4, which is formed in a conventional manner from a busbar piece 5 and a substantially U-shaped clamping spring 6.
• the clamping spring 6 has a fixed in Isolierstoffgeophuse 2 and / or the busbar section 5 contact section 7, an adjoining spring bow 8 and adjoining the spring bow 8 clamping leg 9, the free end 10 in the rebound (relaxed) state at a projection 11 of Busbar piece 5 is applied and forms a terminal point for an electrical conductor in this area.
• clamping leg 9 over the width of the clamping spring 6, d. H. in the cross-sectional view in the direction transverse to the longitudinal direction L of the clamping leg 9 and transversely to the spring direction F of the clamping spring 6 is divided into two parts such that an adjoining the terminal point and abutting the busbar piece clamping portion of the free end 10 extends in the direction of busbar piece 5, while an over the width of the clamping spring 6 adjacent operating portion 12 is slightly bent back in the direction of the plant leg 6. It can be seen that the deflection takes place at an angle of approximately 15 to 45 degrees from the longitudinal extension direction of the free end 10 forming the nip. The free end of the actuating portion need not point to the plant leg 7 in the relaxed state of the clamping spring 6, but is still bent back in the direction of plant leg compared to the free end.
• an overload stop Ü is provided on the insulating housing 2 or a portion of the busbar piece 5, which is adapted to the clamping point forming free terminal end 10 of the clamping spring 6 such that in an attempt to excessive deflection of the clamping spring 6 by an electrical conductor, the free Terminal end 10 abuts the overload stop Ü.
• This also provides protection against overloading by the electrical conductor, for example due to an impermissibly bent conductor end or an excessively large conductor cross-section.
• FIG. 1 b) shows the state of the terminal component 1 when actuated by a screwdriver 13, which is inserted into an actuating channel 14 which is arranged next to the conductor insertion opening 3 and runs in the same alignment with respect to the illustrated cross section.
• the actuating channel 14 extends so far that the free end of the screwdriver 13 can reach the actuating portion 12 and pushes the clamping leg 9 with the narrow side edge of the screwdriver 13 in the direction of plant leg 7.
• the narrow side edge of the screwdriver 13 opposite the actuating section 12 rests against the insulating housing 2.
• FIG. 1 c) shows the operating state of the clamping component 1, in which the clamping spring 6 is opened by the screwdriver 13 as in FIG. 1 b) and now an electrical conductor 15 with a free conductor end stripped at the end is inserted into the conductor insertion channel 3.
• FIG. Id shows the final clamping state in which the screwdriver 13 is now pulled out of the actuating channel 14 and the actuating section 12 is released in this way.
• the terminal component 1 offers by running in the transverse direction parallel to the conductor insertion direction operating channel 14 and the provision of the actuating portion in the width direction of the clamping spring 6, the possibility of a very space-saving design.
• the same opening can be used in principle for the actuating channel 14 and the conductor insertion opening 3. It is also conceivable that between actuation channel 14 and conductor insertion opening 3, a (thin) wall of insulating material is provided, which is made integral with the insulating material 2.
• FIG. 2 shows a cross-sectional view of a clamping component 1 in partial section with a clamping leg 9 which is spring-rested in the rest position and clamping leg 7 bent back in the actuating position in the direction of the plant leg 7. From the operating position shown in the left half is clear that the bent in the direction of plant leg 7 actuating portion 12 abuts with its free end of the clamping leg 9 on the plant leg 7, when the 7 is applied when the screwdriver 13 is inserted into the actuating channel 14. A further deflection and overloading of the clamping spring 6 is thereby prevented.
• the contact leg 7 of the clamping spring 6 with its free end dips into an opening of the busbar piece 5 in order to fix the clamping spring 6 to the busbar piece 5.
• the busbar piece 5 itself is bent approximately U-shaped in order to provide at its bottom a stop face for the electrical conductor 15 and with its upwardly bent free end a nip.
• FIG. 3 shows a longitudinal section through the clamping component 1 from FIG. 2 in partial section.
• the conductor insertion opening 3 is spatially separated by an intermediate wall 16 of insulating material of the insulating material 2 of the actuating channel 14.
• the actuating channel in cross-section i. seen in the direction of the width of the clamping spring 6 in alignment with the conductor insertion opening 3, while the main axis of the actuating channel 16 in longitudinal section ( Figure 3) slightly angled (5 to 25 degrees) is tilted to the main axis of the conductor insertion opening 3.
• the actuating channel from the upper opening down to the spring clip 4 in tapered longitudinal section and thus adapted to the tapered contour of conventional screwdriver 13 accordingly.
• FIG. 4 shows a plan view of the terminal components 1 from FIGS. 1 to 3 in the region of a clamping point. It becomes clear that the actuation of the spring clip with a screwdriver which has been placed upright and the arrangement of the actuating channel 14 in the width direction of the clamping spring 6 allows a length-wise and wide-balanced, nearly square space distribution in addition to the conductor insertion opening 3. On the other hand, the conventional terminal components 1 shown in FIG. 5 result in a space requirement that is unequal in width and length.
• the terminal device 1 according to the invention allows by the balanced distribution of clamping spring 6, actuating channel 14 and conductor insertion opening 3, a placement of the spring terminals in a uniform grid. Due to the greater width of the clamping spring 6 compared to the conventional variant shown in Figure 5, it is possible to reduce the thickness of the spring plate, whereby the radius of the spring bow can also be reduced without sacrificing spring force. This leads to a reduction in size.
• the terminal component 1 can be, for example, a terminal block in which two or more terminal points are connected to one another via the busbars 5.
• Such terminal blocks are known per se. They may also be equipped with electrical and / or electronic components, such as relays, fuses, etc., to form so-called functional terminals, such as isolating and measuring terminals, fuse terminals, initiator and actuator terminals, diode terminals, LED
• terminal components are modules for automation technology, such as fieldbus couplers and connected input / output modules, which are connected via the spring terminals with fieldbus devices.
• connection contacts for establishing a data bus and / or a power power supply protrude on the side walls of the insulating material when terminal components adjacent to each other are placed side by side on a DIN rail (see DE 44 02 002 B4).

Landscapes

• Connections Arranged To Contact A Plurality Of Conductors (AREA)
• Clamps And Clips (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=41202395

Family Applications (1)

Country Status (8)

Cited By (3)

Families Citing this family (13)

Citations (7)

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• 2008
  • 2008-08-27 DE DE102008039864A patent/DE102008039864B4/de not_active Withdrawn - After Issue
• 2009
  • 2009-08-04 EP EP16186605.8A patent/EP3121904B1/de active Active
  • 2009-08-04 US US13/060,497 patent/US8535084B2/en active Active
  • 2009-08-04 EP EP09777637.1A patent/EP2319127B1/de active Active
  • 2009-08-04 KR KR1020117006889A patent/KR101740065B1/ko active Active
  • 2009-08-04 RU RU2011111569/07A patent/RU2500058C2/ru active
  • 2009-08-04 WO PCT/EP2009/005633 patent/WO2010022846A1/de not_active Ceased
  • 2009-08-04 JP JP2011524218A patent/JP5746030B2/ja active Active
  • 2009-08-04 CN CN200980141971.5A patent/CN102197539B/zh active Active
  • 2009-08-04 KR KR1020177013370A patent/KR101769273B1/ko active Active

Patent Citations (7)

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