EP0141086B1 - Borne de raccordement pour installation basse tension, en particulier pour interrupteurs - Google Patents

Borne de raccordement pour installation basse tension, en particulier pour interrupteurs Download PDF

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Publication number
EP0141086B1
EP0141086B1 EP84109585A EP84109585A EP0141086B1 EP 0141086 B1 EP0141086 B1 EP 0141086B1 EP 84109585 A EP84109585 A EP 84109585A EP 84109585 A EP84109585 A EP 84109585A EP 0141086 B1 EP0141086 B1 EP 0141086B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
bore
plastic member
terminal according
connecting terminal
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
Application number
EP84109585A
Other languages
German (de)
English (en)
Other versions
EP0141086A1 (fr
Inventor
Heinz Grunst
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.)
Square D Starkstrom GmbH
Original Assignee
Square D Starkstrom 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 Square D Starkstrom GmbH filed Critical Square D Starkstrom GmbH
Priority to AT84109585T priority Critical patent/ATE26044T1/de
Publication of EP0141086A1 publication Critical patent/EP0141086A1/fr
Application granted granted Critical
Publication of EP0141086B1 publication Critical patent/EP0141086B1/fr
Expired 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
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
    • H01R4/4863—Coil spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals

Definitions

  • the invention relates to a connection terminal for low-voltage systems, in particular switching devices, the stripped electrical conductor to be connected being connected to a contact connecting rail by pressure of a spring.
  • connection techniques used and known in practice one can basically differentiate between screw, solder, plug, solderless and screwless connections.
  • the screw connections which are usually provided with self-lifting or self-opening clamps, have the advantage that the contact forces and the conductor pull-out forces are relatively large, provided that the screws are tightened.
  • the screw connections have the disadvantage. that the contact quality depends on how more or less carefully the operator in question tightens the screw of the screw connection.
  • operating conditions such as vibrations, temperature changes, etc. can have a negative influence without the change in the strength of the clamping point being visible from the outside. It can sometimes be forgotten by the operator to tighten the wiring at individual screw connections or to tighten it after transportation, for example. In any case, the processing time for the wiring and thus the labor cost factor is very long. Even with known solder and plug connections, one has to reckon with long processing times and additional corresponding material expenditure.
  • this spring clip can only be used for solid, solid conductors, unless you open the terminal point in a cumbersome manner using a tool in order to be able to insert multi-wire conductor ends. Nevertheless, there is a risk of splicing and bending or compressing individual wires, which cannot be seen from the outside and which has a negative influence on the passage of current.
  • a cage clamp connection system which has the advantage that the contact quality cannot be influenced by the operator. It is also possible to connect single or multi-wire types of conductors. However, it is also disadvantageous here that the clamping point must first be opened by pressing down the cage tension spring with a screwdriver before the conductor end can be inserted. You also need a tool to detach the conductor. The idea of delivering this cage tension spring connection system with open clamping points could not be realized in practice.
  • connection terminals All of the known connection terminals explained above have in common that they do not offer any protection against contact, i.e. that the operator can always come into contact with conductive metal parts and therefore always requires insulated tools.
  • the invention has for its object to provide a terminal that allows both the connection and the release of the conductor without any tools, which can also be delivered with an open terminal point, so that any single, multi or fine wire types can be connected, without the wear of individual conductors of the conductor occurring and which offers complete protection against contact.
  • a plastic body is slidably arranged on the free end of the contact connection rail and has a transverse bore into which a sleeve which is too open after the contact connection rail is slidably inserted and which, on the one hand, is inserted into a extended recess of a bore of the contact terminal rail can be latched and on the other hand rests against a resiliently elastic part of the plastic body, and that a compression spring is provided between the connecting rail and the plastic body in its sliding direction.
  • Figures 1 and 2 show a side view and plan view of an embodiment of a known switching device 1, which is provided with four contact terminal rails 2 to 4 and 9 in this embodiment.
  • These contact connection rails are arranged in the switching device in such a way that they are held stationary and, for example, carry fixed contact pieces at the inner end, which cooperate with parts not shown, for example a contact system.
  • two plastic bodies 10 to 17 are each slidably arranged, the displacement path being expediently limited by stops.
  • FIGS. 3 to 6 illustrate one of these plastic bodies 17 on a greatly enlarged scale.
  • the plastic body 17 has a transverse bore 18 in which a sleeve 19 which is too open after the contact connecting rail 9 is slidably inserted, which on the one hand can be snapped into an enlarged recess 21 in a bore 20 of the contact connecting rail 9 and on the other hand on a resiliently elastic part 22 of the plastic body 17 is present.
  • a compression spring 23 is provided between the contact connecting rail 9 and the plastic body 17 in the direction of its displacement.
  • the sleeve 19 is advantageously formed from an electrically highly conductive metal.
  • the compression spring 23 is held in a bore 24 in the plastic body 17 and is supported on the one hand on the front end 25 of the bore 24 and on the other hand on an angled arm 26 of the contact connecting rail 9.
  • the bore 20 of the contact connecting rail 9 has a conical widening 27 on the side remote from the sleeve 19.
  • the upper part of the plastic body 17 shown in FIG. 3, that is to say the part 28 of the bore 18, which is located between the contact connecting rail 9 and the insertion side of the conductor 33, is also flared outwards in order to facilitate the insertion of the conductor and a splicing to prevent veins.
  • the sleeve 19 is advantageously of essentially cylindrical design and, in the illustration according to FIG.
  • the resiliently elastic part 22 of the plastic body 17 is designed as a wall, which covers a cavity 37 on the outside, in the illustration according to FIG. 3 on the underside.
  • the inner cross-sectional area of the sleeve 19 is advantageously selected to be somewhat larger than the maximum cross-sectional area of the conductor 33.
  • the connecting terminal according to the invention is used in a switching device which has normally closed and normally open contacts, it is advantageous to provide the plastic bodies 10 to 17 with a color code, such as green or red, in order to make a distinction between the associated normally closed contacts or visible from the outside To reach make contacts.
  • the operation of the terminal explained above is essentially as follows.
  • the connecting terminal according to the invention can be delivered with the terminal point open according to FIG. 3, either prepared in the factory on the low-voltage system concerned, for example on a switching device, or as a loose connecting terminal which can subsequently be connected to the relevant contact connecting rail. 3, the upper end of the sleeve 19 is in the enlarged recess 21 of the bore 20, caused by the pressure of the resilient part 22 of the plastic body 17.
  • the non-insulated end of the In this exemplary embodiment insert the conductor 33 from above.
  • the sleeve 19 Due to the pressure on the conductor 33, the sleeve 19 is moved against the spring force of the resilient part 22 of the plastic body 17 downward, so that the upper end of the sleeve 19 slides out of the enlarged recess 25. At this moment, the compression spring 23 can come into effect and move the plastic body together with the sleeve 19 to the right in the direction of the arrow shown in FIG. 5, so that the left wall part of the sleeve 19 rests against the conductor 33 with a relatively large area.
  • the sleeve 19 communicates with the upper end face in a large circumferential part with the contact connecting rail 9 in an electrically conductive manner.
  • the conductor 33 is pressed against part of the wall of the bore 22 and thus clamped. The result is a good current transfer and a good tensile retention of the conductor by clamping action.
  • Figure 7 illustrates another embodiment in which the same reference numerals as in Figures 3 to 6 have been used for the same or equivalent parts.
  • the arrangement of the compression spring 23 with respect to the sleeve 19 is, as it were, reversed from the embodiment of FIGS. 3 to 6.
  • the arrangement depends on the given space.
  • the mode of action is basically the same again, i.e. the conductor 33 is clamped in by the action of the compression springs 23 and the plastic body 35 is shifted to the left with respect to the rest position with the clamping point open.
  • the resiliently elastic part 29 of the plastic body 35 is designed as a freely projecting arm, at the end of which a spherical thickening 30 is provided on the inside lying after the sleeve 19, which in turn is in an adapted recess 31 in the bottom 32 of the sleeve 19 is present.
  • the compression spring is set in a shortened bore 36 in the plastic body, which simplifies the assembly of the compression spring 23.

Claims (11)

1. Borne de connexion pour installations à basse tension, en particulier pour appareils d'interruption, sur laquelle le conducteur électrique (33) à connector, lequel est dénudé, est relié par la pression d'un ressort (23) à une lame de contact et da connexion (9), caractérisée en ce qu'une pièce en plastique (10 à 17) est disposée coulissante sur l'extrémité libre de la lame de contact et de connexion (2 à 4 et 9), pièce en plastique qui présente un perçage transversal (18) dans lequel est insérée une douille (19) ouverte vers la lame (9) et déplaçable dans le percage, la douille pouvant s'encliqueter d'un côté dans un élargissement (21) d'un trou (20) de la lame (9) et s'appliquant de l'autre côté contre une partie élastique (22; 29) de la pièce en plastique (17, 35), et qu'un ressort de compression (23) est placé entre la lame (9) et la pièce en plastique (17; 35), dans le sens du coulissement de cette pièce.
2. Borne selon la revendication 1, caractérisée en ce que la douille (19) est faite d'un métal bon conducteur électrique.
3. Borne selon la revendication 1 ou 2, caractérisée en ce que le ressort de compression
(23) est maintenu dans un perçage (24; 36) de la pièce en plastique (17; 35) et est appuyé d'un côté au fond (25) du perçage et de l'autre côté sur une patte coudée de la lame (9)
4. Borne selon une des revendications précédentes, caractérisée en ce que le trou (20) de la lame (9) présente un évasement conique (27) du côté eloigné de la douille (19).
5. Borne selon une des revendications précédentes, caractérisée en ce que le perçage transversal (18) de la pièce en plastique (17; 35) comporte une partie (28) s'évasant coniquement entre la lame (9) et le côté d'introducion du conducteur (33).
6. Borne selon une des revendications précédentes, caractérisée en ce que la douille (19) est essentiellement cylindrique et que l'élargissement (21) du trou (20) de la lame est adapté au diamètre extérieur de la douille.
7. Borne selon une des revendications précédentes, caractérisée en ce que la partie élastique (22) de la pièce en plastique (17) est réalisée comme une paroi recouvrant une cavité (37) sur le côté extérieur.
8. Borne selon une des revendications 1 à 6, caractérisée en ce que la partie élastique (29) de la pièce en plastique (35) est réalisée comme une languette (29) dépassant librement et dont l'extrémité présente un épaississement bombé (30) sur le côté intérieur, dirigé vers la douille (19), épaississement qui s'applique dans un évidement (31) adapté à lui du fond (32) de la douille (19).
9. Borne selon une des revendications précédentes, caractérisée en ce que la pièce en plastique (10 à 17; 35) est pourvue d'un marquage de couleur, vert ou rouge par exemple, pour distinguer des contacts de repos ou des contacts de travail coordonnés.
10. Borne selon une des revendications précédentes, caractérisée en ce que l'aire de section droite intérieure de la douille (19) est légèrement plus grande que l'aire de section droite maximale du conducteur (33).
EP84109585A 1983-09-13 1984-08-11 Borne de raccordement pour installation basse tension, en particulier pour interrupteurs Expired EP0141086B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109585T ATE26044T1 (de) 1983-09-13 1984-08-11 Anschlussklemme fuer niederspannungsanlage, insbesondere schaltgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833332914 DE3332914A1 (de) 1983-09-13 1983-09-13 Anschlussklemme fuer niederspannungsanlagen, insbesondere schaltgeraete
DE3332914 1983-09-13

Publications (2)

Publication Number Publication Date
EP0141086A1 EP0141086A1 (fr) 1985-05-15
EP0141086B1 true EP0141086B1 (fr) 1987-03-18

Family

ID=6208883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109585A Expired EP0141086B1 (fr) 1983-09-13 1984-08-11 Borne de raccordement pour installation basse tension, en particulier pour interrupteurs

Country Status (3)

Country Link
EP (1) EP0141086B1 (fr)
AT (1) ATE26044T1 (fr)
DE (1) DE3332914A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2696584B1 (fr) * 1992-10-05 1994-12-02 Merlin Gerin Borne de raccordement pour appareillage électrique de puissance.
DE102015106271A1 (de) * 2015-04-23 2016-10-27 Wago Verwaltungsgesellschaft Mbh Klemmverbinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT294220B (de) * 1969-08-21 1971-11-10 Goerz Electro Gmbh Schnellspannklemme
FR2279235A1 (fr) * 1974-05-15 1976-02-13 Telemecanique Electrique Organe de raccordement de l'extremite d'un conducteur a une broche
CH578265A5 (fr) * 1975-03-17 1976-07-30 Woertz Fa
FR2425738A1 (fr) * 1978-05-11 1979-12-07 Rolhion Daniel Dispositif de connexion electrique pour ambiance vibrante

Also Published As

Publication number Publication date
DE3332914C2 (fr) 1987-02-26
DE3332914A1 (de) 1985-04-04
ATE26044T1 (de) 1987-04-15
EP0141086A1 (fr) 1985-05-15

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