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WO1998003985A1 - Composant electrique, notamment relais, comportant un boitier en deux parties, et procede d'assemblage dudit boitier - Google Patents

Composant electrique, notamment relais, comportant un boitier en deux parties, et procede d'assemblage dudit boitier Download PDF

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Publication number
WO1998003985A1
WO1998003985A1 PCT/DE1997/001424 DE9701424W WO9803985A1 WO 1998003985 A1 WO1998003985 A1 WO 1998003985A1 DE 9701424 W DE9701424 W DE 9701424W WO 9803985 A1 WO9803985 A1 WO 9803985A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
joining
housing parts
edges
heating conductor
Prior art date
Application number
PCT/DE1997/001424
Other languages
German (de)
English (en)
Inventor
Angelo Polese
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1998003985A1 publication Critical patent/WO1998003985A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin

Definitions

  • the invention relates to an electrical component with a two-part housing, a first housing part made of plastic and a second plastic part also consisting of plastic having their edges welded to one another.
  • the invention also relates to a method for joining the two-part component housing.
  • the aim of the present invention is to create an electrical component with a two-part housing and to specify a joining method for it, in which the heat for welding the housing parts to the parts to be welded in a targeted manner
  • Areas can be brought so that unnecessary heating of other parts of the component is avoided.
  • this goal is achieved in a component of the type mentioned, in particular in a relay, in that in the joining area between the edges of the a circumferential heating conductor is arranged in both housing parts.
  • the heating conductor provided according to the invention in the form of a resistance wire or a laceless sheet metal strip directly in the area of the housing edges to be welded, it is possible to generate the welding heat directly at the desired point, the joining process being controlled precisely by the dimensioning of the welding current and the heating duration - can be learned.
  • This joining method is particularly advantageous when, in the case of a relay, an electromagnet system is arranged in one of the housing parts, a contact arrangement is arranged in the other housing part, and an armature is arranged in the area between the two housing parts, the direction of movement of the armature or a movable one actuated by it Contact is perpendicular to the joint plane of the two housing parts.
  • Anchor overstroke can be set by a more or less large deformation of the housing edges. This is controlled by appropriate measurement of the welding current and the joining time in connection with a pressure exerted on the two housing parts.
  • the response value of the relay is preferably measured, and the joining process is ended when a predetermined response value has been reached.
  • FIG. 1 shows a relay designed according to the invention in a perspective sectional view
  • Figure 2 shows a lower housing part of the relay of Figure 1
  • the relay shown in the drawing has a two-part housing with a first, lower housing part 1 in the form of a half-shell and a second, upper housing part 2, also in the form of a half-shell.
  • the edges of the two half-shells are nestled in a box shape.
  • the lower housing part 1 has an inwardly offset edge 11, while the second housing part 2 has an appropriately outwardly offset edge 21, which also has a circumferential, deformable rib 22.
  • a circumferential channel is formed, in which a heating wire 3 is arranged in the form of a resistance wire.
  • the ends 31 and 32 of the resistance wire are shown only schematically. They are connected to an AC power source, not shown, for heating the wire.
  • a relay system is arranged inside the housing.
  • this consists of a magnet system with a U-shaped core yoke 4 and a coil 5 wound over the central part of the core yoke, which are fastened in the upper housing part 2.
  • An armature 6 bridges the two ends of the core yoke 4 when the magnet system is excited.
  • This armature actuates a contact system which is arranged in the lower housing part 1. It comprises two fixed contact elements 12 and 13, between which a movable contact 14 can be switched.
  • This movable contact 14 is fastened on an L-shaped contact spring 7, which is fastened, for example welded, to a spring support 8 with its fastening end 7a.
  • the armature 6 is also welded to this contact spring 7 or fastened in another way, so that it takes the contact spring with it when it switches.
  • the fixed contact elements 12 and 13 with their connecting elements 12a and 13a as well as the spring support 8 are injected into the lower housing part 1 with a connecting pin, not shown, so that the connecting elements are led out tightly.
  • the contact spring 7 which is already connected to the armature 6, fastened, in addition, the heating wire 3 is arranged on the shoulder 15 next to the edge 11 of the lower housing part.
  • the wire ends 31 and 32 are brought very close to each other as required or crossed with the interposition of an insulating film so that the entire peripheral edge can be heated without gaps.
  • the upper housing part containing the magnet system with the injected coil connecting elements 23 and 24 is then placed on the lower housing part 1 thus prepared.
  • the edges of the two housing parts are then heated by introducing a heating current I through the heating wire 3, the peripheral rib 22 in particular melting.
  • a pressure F By exerting a pressure F in the direction of arrow 9, the housing parts are pressed together, the edges melting together.
  • the armature 6 with the contact spring 7 lies in the lower housing part, the stroke available for the armature can be adjusted by compressing the housing parts to a greater or lesser extent, whereby a certain response value of the relay is also determined.
  • the response voltage can be measured electrically during the joining process. If a predetermined response value is then reached, the joining process is interrupted, i. that is, the heating current is switched off and the pressure F is removed from the housing. After cooling, the relay is adjusted and sealed at the same time.
  • the wire ends 31 and 32 can be separated, while the heating wire 3 otherwise remains in the housing.
  • a narrow metal strip could also be used. It would also be possible to embed the resistance wire or the sheet metal strip during the manufacture of the one housing part, so that a separate assembly step is not necessary.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un composant électrique comportant un boîtier en deux parties avec deux demi-coques (1, 2) assemblées au niveau de leurs bords. Pour souder les deux demi-coques, on place entre les bords appliqués l'un contre l'autre, un filament chauffant que l'on alimente en courant de soudage pendant l'assemblage. Ce procédé permet d'appliquer l'énergie de soudage de façon ciblée; le boîtier peut être facilement étanchéifié, et il est possible d'ajuster simultanément l'écart fonctionnel entre les éléments fonctionnels du composant montés dans les deux parties de boîtier.
PCT/DE1997/001424 1996-07-18 1997-07-07 Composant electrique, notamment relais, comportant un boitier en deux parties, et procede d'assemblage dudit boitier WO1998003985A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19629080.5 1996-07-18
DE19629080 1996-07-18

Publications (1)

Publication Number Publication Date
WO1998003985A1 true WO1998003985A1 (fr) 1998-01-29

Family

ID=7800229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001424 WO1998003985A1 (fr) 1996-07-18 1997-07-07 Composant electrique, notamment relais, comportant un boitier en deux parties, et procede d'assemblage dudit boitier

Country Status (1)

Country Link
WO (1) WO1998003985A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1560381A (fr) * 1966-12-23 1969-03-21
DE3246497A1 (de) * 1981-12-18 1983-06-30 W. Gruner GmbH & Co Elektrotechnik KG, 7209 Wehingen Zweigeteilte kappe fuer ein relais
US4536644A (en) * 1983-12-19 1985-08-20 Georg Fischer Aktiengesellschaft Arrangement for welding together thermoplastic molded members

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1560381A (fr) * 1966-12-23 1969-03-21
DE3246497A1 (de) * 1981-12-18 1983-06-30 W. Gruner GmbH & Co Elektrotechnik KG, 7209 Wehingen Zweigeteilte kappe fuer ein relais
US4536644A (en) * 1983-12-19 1985-08-20 Georg Fischer Aktiengesellschaft Arrangement for welding together thermoplastic molded members

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