EP0140219A2 - Bloc de connexion avec des contacts de tête - Google Patents

Bloc de connexion avec des contacts de tête Download PDF

Info

Publication number
EP0140219A2
EP0140219A2 EP84112013A EP84112013A EP0140219A2 EP 0140219 A2 EP0140219 A2 EP 0140219A2 EP 84112013 A EP84112013 A EP 84112013A EP 84112013 A EP84112013 A EP 84112013A EP 0140219 A2 EP0140219 A2 EP 0140219A2
Authority
EP
European Patent Office
Prior art keywords
terminal block
insulating part
block according
clamping
shielding
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.)
Granted
Application number
EP84112013A
Other languages
German (de)
English (en)
Other versions
EP0140219A3 (en
EP0140219B1 (fr
Inventor
Werner Simmack
Franz Schrauder
Peter Wolf
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.)
Wieland Electric GmbH
Original Assignee
F Wieland Elektrische Industrie 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 F Wieland Elektrische Industrie GmbH filed Critical F Wieland Elektrische Industrie GmbH
Priority to AT84112013T priority Critical patent/ATE40241T1/de
Publication of EP0140219A2 publication Critical patent/EP0140219A2/fr
Publication of EP0140219A3 publication Critical patent/EP0140219A3/de
Application granted granted Critical
Publication of EP0140219B1 publication Critical patent/EP0140219B1/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
    • 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
    • H01R9/2491—Terminal blocks structurally associated with plugs or sockets
    • 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
    • H01R4/34—Conductive members located under head of screw
    • 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
    • H01R4/70—Insulation of connections

Definitions

  • the invention relates to a single-pole or multi-pole terminal strip with head contact terminals which can be snapped into the upwardly open chambers of an insulating part and undercuts the undercut walls of the insulating part.
  • the known terminal strips of this type mostly power supply terminals for electric cookers and storage ovens, initially have the disadvantage that the creepage distances between the individual clamping bodies are too small, as well as the creepage and clearance distances between the clamping screws and any metallic documents are often not sufficient. These difficulties are exacerbated by the fact that the power supply terminals in such devices are usually installed at such points that the environment of the power supply terminal remains below the temperatures prescribed by the applicable regulations due to air circulation. Due to the air circulation, dust remains between the sprags and the metallic surface in the device as well as the clamp screws and leads to electrical faults. These faults occur particularly often when air humidity is an additional disturbing factor.
  • the latching of the terminal body of the head contact terminals in the chambers of the insulating part is unsatisfactory, in particular an exchange of the terminals body is no longer possible in the event of any damage, since the snap-in bracket is lost when it is replaced.
  • This is due to the fact that the relatively rigid web walls between the individual chambers have only a very low elasticity, just like the clamping bodies made of relatively thick metal rails of the head contact clamps, so that the projections forming the undercuts are often sheared off.
  • the invention is therefore based on the object of designing a single-pole or multi-pole terminal strip of the type mentioned in such a way that a secure snap-in of the terminal body into the insulating part, which also enables repeated exchange of the terminals, is achieved while simultaneously increasing the creepage and clearance distances.
  • the web walls are provided with - at the same time allowing the snap-in elements of the clamp bodies of the head contact clamps to snap in - longitudinal creep slots.
  • the web walls between the chambers are virtually dissolved into two parallel wall sections separated from one another by these slots, which means that they can yield elastically in the event of pressure loads from the outside because of the longitudinal slots and thus ensure that the clamping bodies snap in easily.
  • the elasticity can be set independently of the choice of material in such a way that the clamps are securely held on the one hand, but can also be released from their detent holder again without destroying the clamping catches - for example by pressing the web walls with the aid of pliers or the like. Choosing a corresponding depth of the longitudinal creepage slots results in a multiply increased creepage distance between adjacent heads contact terminals, so that disturbing electrical contacts and arcing are not to be feared even taking into account the disturbing factors described at the beginning.
  • the screw shafts of the clamping screw-receiving shielding pots are formed on the underside of the insulating part opposite the chambers.
  • the known terminal strips were usually provided with spring washers or spring washers to prevent unwanted loosening of the clamping screws, especially when it comes to the protective connection. So that the clamping screws are protected against loss during transport from the manufacturer to the device manufacturer and from there to the operator, the clamping screws were tightened to a predetermined torque.
  • this in turn has the disadvantage that the installer of these electrical heating devices has to loosen all clamping screws before he clamps the lines. This is a considerable additional assembly effort, which should be avoided in the interest of a practical final assembly by the installers.
  • the insulating part is provided with braking devices acting on the screw shaft of the clamping screws, these being formed as brake ribs formed in the shielding pot, or by a smaller inner diameter of the shielding pot compared to the diameter of the screw shaft and / or but can be realized by choosing an oval inner cross section of the shielding pot.
  • the terminal block shown in FIGS. 1 to 3 consists of the insulating part 1 and the head contact clamps 3, which snap into the chambers 2 of the insulating part.
  • Each head contact clamp consists of a clamping body 4, essentially designed as a U-shaped rail, with tabs 5 and a clamping screw 6
  • the clamping bodies 4 with the clamping screws 6, which are screwed in a known manner into screw thread openings of the clamping bodies, which can optionally also be designed as passages, are inserted from above into the chambers 2 under pressure sets, where existing lugs 7 on the clamping body snap into undercuts 8 of the web walls 9, which are sprayed from below, between the chambers 2.
  • the web walls 9 are provided with deep longitudinal creepage slots 10, which, by dividing the stable longitudinal walls into two parallel, thinner walls, simultaneously increase the elasticity, which ensures a simple spring engagement of the clamping bodies 4, in such a way that This locking can be released again without damaging the undercuts.
  • the screw shafts 11 of the clamping screws 6 engage in shielding pots 12 which are closed at the bottom and are molded onto the underside of the insulating part 1. These shielding pots ensure that the necessary creepage distances and clearances are maintained, regardless of the depth at which the clamping screw 6 is screwed into the clamping body 4, depending on the conductor cross section.
  • the shielding pot 12 has clamping ribs 13 on the inside, which brakely encompass the screw shaft 11 of the clamping screw 6 and thus hold the clamping screw 6 in any desired position. For this reason, an open terminal space 14 can be present both when the terminal strip is transported and when the device is later transported.
  • the shielding pot 12 could also be oval or with an inside diameter that is smaller than the diameter of the screw shaft 11.
  • the depth of the leakage current longitudinal slots 10 is of course chosen to be less than the depth of the chambers 2, so that the web walls 9 are correspondingly thick-walled and thus stable in the lower region and thus form a stable frame for the clamping bodies 4.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP84112013A 1983-10-29 1984-10-06 Bloc de connexion avec des contacts de tête Expired EP0140219B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112013T ATE40241T1 (de) 1983-10-29 1984-10-06 Klemmleiste mit kopfkontaktklemmen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3339364 1983-10-29
DE3339364A DE3339364C2 (de) 1983-10-29 1983-10-29 Klemmleiste mit Kopfkontaktklemmen

Publications (3)

Publication Number Publication Date
EP0140219A2 true EP0140219A2 (fr) 1985-05-08
EP0140219A3 EP0140219A3 (en) 1986-12-10
EP0140219B1 EP0140219B1 (fr) 1989-01-18

Family

ID=6213088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112013A Expired EP0140219B1 (fr) 1983-10-29 1984-10-06 Bloc de connexion avec des contacts de tête

Country Status (3)

Country Link
EP (1) EP0140219B1 (fr)
AT (1) ATE40241T1 (fr)
DE (1) DE3339364C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646025A1 (fr) * 1989-04-12 1990-10-19 Itw Fastex Italia Spa Plaque a bornes multistandard, en particulier pour appareils domestiques
EP0405335A3 (en) * 1989-06-28 1991-06-12 Siemens Aktiengesellschaft Protected connector for a distribution strip of a telecommunications system
ES2076100A2 (es) * 1993-08-03 1995-10-16 Iberica De Aparellajes S L Mejoras en interruptores multiples para celdas de distribucion de energia electrica

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909756A (en) * 1955-09-23 1959-10-20 Amp Inc Connector block assembly
DE1690154B2 (de) * 1968-03-09 1976-04-15 Simon, Hans, 5463 Unkel Kontaktleiste mit unverlierbar eingelegten kontaktblechen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2646025A1 (fr) * 1989-04-12 1990-10-19 Itw Fastex Italia Spa Plaque a bornes multistandard, en particulier pour appareils domestiques
EP0405335A3 (en) * 1989-06-28 1991-06-12 Siemens Aktiengesellschaft Protected connector for a distribution strip of a telecommunications system
ES2076100A2 (es) * 1993-08-03 1995-10-16 Iberica De Aparellajes S L Mejoras en interruptores multiples para celdas de distribucion de energia electrica

Also Published As

Publication number Publication date
DE3339364A1 (de) 1985-05-09
EP0140219A3 (en) 1986-12-10
ATE40241T1 (de) 1989-02-15
EP0140219B1 (fr) 1989-01-18
DE3339364C2 (de) 1985-09-05

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