EP0337236B1 - Borne électrique - Google Patents

Borne électrique Download PDF

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Publication number
EP0337236B1
EP0337236B1 EP89105826A EP89105826A EP0337236B1 EP 0337236 B1 EP0337236 B1 EP 0337236B1 EP 89105826 A EP89105826 A EP 89105826A EP 89105826 A EP89105826 A EP 89105826A EP 0337236 B1 EP0337236 B1 EP 0337236B1
Authority
EP
European Patent Office
Prior art keywords
terminal
leg
base
window
tongue
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.)
Expired - Lifetime
Application number
EP89105826A
Other languages
German (de)
English (en)
Other versions
EP0337236A1 (fr
Inventor
Hans Dipl.-Ing. Treiber (Fh)
Zdenek Krec
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT89105826T priority Critical patent/ATE99079T1/de
Publication of EP0337236A1 publication Critical patent/EP0337236A1/fr
Application granted granted Critical
Publication of EP0337236B1 publication Critical patent/EP0337236B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw

Definitions

  • the invention relates to an electrical clamp according to the preamble of claim 1.
  • a clamp is known from DE-U-1 887 767.
  • Such terminals are used in terminal blocks, as installation terminals, in electrical devices or in distributors and for connection to busbars. They should be economical to manufacture and still ensure good electrical contact over the long term.
  • the invention is based on the object of developing an electrical terminal which is stable and which can be manufactured simply and economically.
  • an electrical terminal according to claim 1 is proposed. This creates a sprag with a particularly stable base.
  • the T-shaped tabs form a diverging neck region, figuratively the T-stem, and ends bent outwards thereon, which, bent against the neck, hang figuratively on crooked hinges, manufacturing tolerances are eliminated when the ends are bent. When bending, the ends come to a position where they spread out at the bottom of the sprag.
  • a clamp with several advantages is achieved: For example, a stamped part made of a material with the desired properties can be used to create a particularly stable thread can be achieved as a guide for the clamping screw. On the other hand, one achieves a brake against loosening the clamping screw and against overtightening when clamping a conductor. Without such a brake, the conductor could sometimes be squeezed too much.
  • the braking effect arises from the fact that after the clamping screw is placed on a conductor to be clamped, when the turning of the clamping body continues, the back of the clamping body lifts off from the stronger guide piece, thereby causing the thread in the back of the clamping body to jam and cause tension.
  • the stronger guide piece can also serve as a carrier in the production and for positioning a laterally fed strip material for the clamping body.
  • the guide piece leaves windows in the legs in its guide plane so that the thread can be cut through the back of the clamping body and the inserted guide piece in one operation.
  • the guide piece can have a cruciform plan and can be easily produced as a stamped part.
  • both legs are tapered in their width towards the bottom above the base to be formed. If an electrical conductor to be connected is deformed and laterally squeezed out in such a clamp, one nevertheless avoids that the inserted body could get caught on the clamp body in such a way that it could not be easily removed.
  • the flanks of the legs forming the clamping body which flare upward from the bottom of the clamping body, act as a support which acts the more the more the conductor is squeezed.
  • the clamp body becomes particularly firm when the inserted tab on the leg of the clamp body behind the window is bent downward toward the bottom of the clamp body.
  • the bent area of the flap stabilizes the clamping body, whereby it finds space in the bend of the base part, so that the clamp can be flat on its flanks without projecting parts.
  • the electrical clamp according to FIG. 1 has a clamp body 1 using folding technology, which is formed from legs 2, 3 on both sides to form a back 4.
  • the back carries a clamping screw 5 in a thread in the back 4.
  • the leg 2 has a push-through window 6 through which the other leg 3 is inserted with a tongue 7.
  • T-shaped, undercut tabs 9, 10 project laterally. They are bent in under the bottom 8 of the leg 2, which has the push-through window, with their cut-out ends 12, 13. As a result, they form the bottom of the clamping body 1 using folding technology.
  • the T-shaped tabs 9, 10 have a diverging neck region, figuratively the T-stem, and ends 12, 13 which are angled outward therefrom.
  • a stronger guide piece 16 for the clamping screw 5 is inserted under the back 4.
  • the guide piece 16 has lateral lugs 17 which are inserted in window 18 in both legs 2, 3. It is advantageous to coordinate lugs and windows so that there is play in the guide plane, ie perpendicular to the plane of the drawing for the guide piece 16.
  • the thread for the clamping screw 5 can then be cut in the back 4 and in the guide piece 16 despite manufacturing tolerances in one operation.
  • the guide piece 16 can advantageously have a substantially cruciform plan, as can be seen from FIG. 4 is.
  • both legs are tapered in width towards the bottom above the terminal base 8 to be formed. This reduces the squeezing of the conductors to be connected and, in particular, prevents the protruding conductors from getting caught behind the legs, so that they would no longer be easy to pull out of the clamp.
  • the terminal base 8 is advantageously slightly bent in a V-shape, as can be seen from FIG. 1.
  • the flap ends 12 and 13 on the "crooked hinges" 14, 15 then find a defined area on the terminal base during bending, in which they spread out on the base and make the terminal body particularly stable in the form-fit.
  • the back 4 of the clamping body When the clamping screw 5 is tightened against a conductor to be clamped, the back 4 of the clamping body finally lifts off increasingly strongly from the guide part 16, so that the clamping screw has a brake in the sense of a torque brake against over-tightening. It also protects against loosening.
  • FIG. 5 shows a stamped part from which a clamp according to FIGS. 1 to 4 can be produced using bending technology.
  • the bending pulls are shown hatched. Otherwise, the same parts have the same reference numerals.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (7)

  1. Borne électrique dont le corps (1) est constitué, par pliage, par des branches (2, 3) de part et d'autre d'un dos (4), qui guide une vis (5) de la borne, une branche (2) comportant au moins une fenêtre de passage (6) dans laquelle passe une languette (7) de l'autre branche (3), tandis que la branche (2) comporte au moins une fenêtre de passage (6) dans laquelle passe la languette (7) de l'autre branche (3), caractérisée en ce que cette branche (3) forme le fond (8) de la borne, cette branche (3) étant munie de pattes (9, 10) latérales saillantes en contredépouille en forme de T, et dont les extrémités dégagées (12, 13) sont coudées sous l'extrémité (11), repliée en-dessous du fond (8), de la branche (2), qui comporte la fenêtre de passage.
  2. Borne suivant la revendication 1, caractérisée en ce que les pattes (9, 10) en forme de T possèdent un col évasé, appelé d'une manière imagée la hampe du T, et formant des extrémités (12, 13) coudées vers l'extérieur, qui, repliées contre le col, sont attachées à ce que l'on appelle, d'une manière imagée, des charnières inclinées (14, 15).
  3. Borne suivant la revendication 1, caractérisée en ce qu'une pièce (16) de guidage de la vis (5) de la borne, est mise sous le dos (4) et passe par des becs (17) latéraux, dans la fenêtre (18) dans les deux branches (2, 3) en laissant du jeu dans le plan de guidage.
  4. Borne suivant la revendication 3, caractérisée en ce que la pièce (16) de guidage a, en projection dans un plan horizontal, une forme en croix.
  5. Borne suivant la revendication 1, caractérisée en ce que les deux branches (2, 3) deviennent de moins en moins larges, au-dessus du fond (8) de la borne à constituer, en direction de ce fond.
  6. Borne suivant la revendication 2, caractérisée en ce que le fond (8) de la borne est légèrement cintré en forme de V.
  7. Borne suivant la revendication 1, caractérisée en ce que la languette (7) enfilée est repliée vers le bas derrière la fenêtre de passage (6).
EP89105826A 1988-04-15 1989-04-03 Borne électrique Expired - Lifetime EP0337236B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89105826T ATE99079T1 (de) 1988-04-15 1989-04-03 Elektrische klemme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3812659 1988-04-15
DE3812659 1988-04-15

Publications (2)

Publication Number Publication Date
EP0337236A1 EP0337236A1 (fr) 1989-10-18
EP0337236B1 true EP0337236B1 (fr) 1993-12-22

Family

ID=6352098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105826A Expired - Lifetime EP0337236B1 (fr) 1988-04-15 1989-04-03 Borne électrique

Country Status (3)

Country Link
EP (1) EP0337236B1 (fr)
AT (1) ATE99079T1 (fr)
DE (1) DE58906470D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE152296T1 (de) * 1993-02-26 1997-05-15 Siemens Ag Klemme aus bandförmigem material
DE4322790C2 (de) * 1993-07-08 1996-03-07 Hirschmann Richard Gmbh Co Schraubklemme mit u-förmigem Klemmkörper
CN1330053C (zh) * 2001-07-02 2007-08-01 西门子公司 接线夹子
ITGE20070130A1 (it) * 2007-12-28 2009-06-29 Gewiss Spa Morsetto perfezionato, particolarmente per interruttori automatici

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1887767U (fr) * 1964-02-20
US4545640A (en) * 1983-11-25 1985-10-08 Curtis Industries Electrical splicing connector
FR2565039B1 (fr) * 1984-05-28 1988-03-04 Morizet Jacques Perfectionnement aux serre-fils pour borne de connexion

Also Published As

Publication number Publication date
EP0337236A1 (fr) 1989-10-18
ATE99079T1 (de) 1994-01-15
DE58906470D1 (de) 1994-02-03

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