EP0393628B1 - Boîtier pour un composant électromécanique - Google Patents

Boîtier pour un composant électromécanique Download PDF

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Publication number
EP0393628B1
EP0393628B1 EP90107356A EP90107356A EP0393628B1 EP 0393628 B1 EP0393628 B1 EP 0393628B1 EP 90107356 A EP90107356 A EP 90107356A EP 90107356 A EP90107356 A EP 90107356A EP 0393628 B1 EP0393628 B1 EP 0393628B1
Authority
EP
European Patent Office
Prior art keywords
housing
ventilation opening
wall
insulation
casing
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
EP90107356A
Other languages
German (de)
English (en)
Other versions
EP0393628A3 (fr
EP0393628A2 (fr
Inventor
Harry Dipl.-Ing. Schröder (FH)
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
Publication of EP0393628A2 publication Critical patent/EP0393628A2/fr
Publication of EP0393628A3 publication Critical patent/EP0393628A3/fr
Application granted granted Critical
Publication of EP0393628B1 publication Critical patent/EP0393628B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/047—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings provided with venting means

Definitions

  • the invention relates to a housing for an electromechanical component with a housing wall that seals off a hollow interior and has a ventilation opening that is open to the outside or prepared for opening.
  • these are electromagnetic relays with a plastic housing or similar switching devices.
  • Relays with a plastic housing are usually sealed using adhesive, casting resin or the like, so that the sensitive parts inside the housing, in particular the contacts, are protected against the harmful effects of washing solutions, soldering agents and the like.
  • the tight closure of the housing can, however, be disadvantageous for the further life of a relay or a similar component, since the plastic housing, the coil and other parts in the relay release contact-harmful precipitates over time, which create a microclimate within the closed housing, which can be more harmful to the contacts than the normal outside air. It is therefore common practice to provide a ventilation opening in the housing, which, for example, only opens (again) after a relay has been installed. For example, it is known to pierce a prepared thin-walled section of a relay wall (DE-A-30 39 702) or to separate a cylindrical or rectangular slug on a housing corner (DE-U-87 03 079). But there is also the possibility to first cover an opening already formed in the housing with a film and to remove this film after washing and soldering the relay.
  • the object of the invention is to design a housing for an electromechanical component with a ventilation opening so that even when installed in the vicinity of foreign metallic parts, the required insulating distances can always be guaranteed from the outside of the housing to the metallic or live parts inside the component .
  • this object is achieved in that the ventilation opening in the interior of the housing opens into an insulation shaft which is separated from the metallic parts in the interior of the housing by an insulation wall extending from the housing wall and is open towards the interior of the housing at least at its end opposite the ventilation opening.
  • the insulation shielding of the ventilation opening in the interior of the housing By means of the insulation shielding of the ventilation opening in the interior of the housing according to the invention, the insulation distances required in each case can be ensured regardless of where the component is installed and which metallic or live parts are always in the vicinity.
  • the insulation wall is expediently attached in such a way that, together with sections of side walls of the housing, it separates a corner region as an insulation shaft.
  • the insulation wall may also be expedient for the insulation wall to extend in the form of a tubular jacket from the ventilation opening into the interior of the housing, the tubular cross section being circular, rectangular or any other shape. In this way, unused cavities inside the housing can be used to accommodate the insulation shaft without increasing the volume of the housing. If possible, however, the ventilation opening and the insulation shaft should be placed as close as possible to the switch contacts, since ventilation is then most effective for the service life.
  • the insulation wall is expediently also molded directly onto the cap.
  • FIG. 1 A partially cut-open relay housing is shown in FIG. 1, with a base 1 with two fixed contact elements 2 and 3 and a center contact spring 4 being shown only schematically in the interior.
  • the contacts are actuated in a conventional manner without having to be discussed in relation to the invention.
  • the base 1 together with a cap 5 forms the relay housing, which is additionally sealed on the underside with casting compound 14.
  • the top wall 5a is provided at one corner with a shoulder 5b on which a detachable pin or slug 7, also known as a “nip-off pin”, is seated.
  • a detachable pin or slug 7 also known as a “nip-off pin”
  • a channel extends from the inside of the housing, which forms the ventilation opening 6 after the slug has been separated.
  • FIG. 1 also schematically shows a printed circuit board 8 arranged above the relay housing, in which a live connecting pin 9 can, for example, come to rest on the ventilation opening 6 of the relay housing.
  • a live connecting pin 9 can, for example, come to rest on the ventilation opening 6 of the relay housing.
  • the air gap or insulation gap 10 shown in dotted lines in FIG. 1, between the pin 9 and the contact elements 2 and 3 in the interior of the relay is sufficiently long to ensure the necessary security against electrical flashover.
  • This air gap is ensured by an insulation shaft 11 being formed by an additional insulation wall 12 in the interior of the housing following the ventilation opening 6.
  • the insulation shaft 11 can also be limited to the corner in that the insulation wall 12, with a small portion of the side walls 5c and 5d of the housing cap, separates a small volume of the interior of the housing.
  • the position of this insulation wall 12 is shown in FIG. 2 in a plan view of the housing, the slug 7 being separated and exposing the ventilation opening 6.
  • FIG. 3 A further development is shown in FIG. 3 in that, in addition to the insulation wall 12 molded onto the cap 5, a further partition 13 is attached to the base 1.
  • the overlap between the insulation wall 12 and the partition wall 13 results in a further extension of the insulation path 10 due to the labyrinth effect.
  • FIG 4 Another embodiment is shown in FIG 4, where only a housing cap is shown in section.
  • the cap 15 has a weakened section 16 somewhere in the middle region of the upper side, which is pierced in order to obtain the desired ventilation opening.
  • an insulation shaft 17 is formed in the form of a tube, so that in this case the insulation wall 18 forms the tube jacket. The position of this tubular insulation shaft 17 depends on the available spatial conditions in the interior of the component.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Casings For Electric Apparatus (AREA)
  • Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Lock And Its Accessories (AREA)
  • Packages (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (5)

  1. Boîtier pour un composant électromécanique comportant une paroi (5a;15) qui ferme d'une manière étanche un espace intérieur vide et qui possède une ouverture d'aération (6;16) ouverte vers l'extérieur ou qui est prête pour son ouverture, caractérisé par le fait que l'ouverture d'aération (6;16) débouche à l'intérieur du boîtier dans un puits d'isolation (11;17), qui est séparée des parties métalliques (2,3,4) à l'intérieur du boîtier, par une paroi isolante (12;18) qui s'étend à partir de la paroi (5a;15) du boîtier, et est ouvert, au moins au niveau de son extrémité (11a) située à l'opposé de l'ouverture d'aération (6;16), en direction de l'intérieur du boîtier.
  2. Boîtier suivant la revendication 1, caractérisé par le fait que la paroi isolante (12) sépare, conjointement avec des sections de paroi latérales (5c, 5d) du boîtier, une zone d'angle en tant que puits d'isolation (11).
  3. Boîtier suivant la revendication 1, caractérisé par le fait que la paroi isolante (18) s'étend sous la forme d'une enveloppe tubulaire à partir de l'ouverture d'aération (16), à l'intérieur du boîtier.
  4. Boîtier suivant l'une des revendications 1 à 3, caractérisé par le fait qu'à l'intérieur du boîtier est prévue une autre paroi de séparation isolante (13), qui s'étend en sens opposé de la paroi isolante (12) et au moins partiellement en chevauchement avec cette dernière de manière à former un labyrinthe.
  5. Boîtier suivant l'une des revendications 1 à 4, caractérisé par le fait que l'ouverture d'aération (6,16) est prévue dans la paroi supérieure (5c) d'un capot en matériau isolant et que la paroi isolante (12;18), formée sur le capot (5), s'étend vers le bas à partir de la face supérieure, en direction de la base (1) du boîtier.
EP90107356A 1989-04-21 1990-04-18 Boîtier pour un composant électromécanique Expired - Lifetime EP0393628B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8905080U DE8905080U1 (fr) 1989-04-21 1989-04-21
DE8905080U 1989-04-21

Publications (3)

Publication Number Publication Date
EP0393628A2 EP0393628A2 (fr) 1990-10-24
EP0393628A3 EP0393628A3 (fr) 1992-05-20
EP0393628B1 true EP0393628B1 (fr) 1994-11-09

Family

ID=6838556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107356A Expired - Lifetime EP0393628B1 (fr) 1989-04-21 1990-04-18 Boîtier pour un composant électromécanique

Country Status (6)

Country Link
US (1) US5051540A (fr)
EP (1) EP0393628B1 (fr)
JP (1) JPH02136947U (fr)
AT (1) ATE114075T1 (fr)
DE (2) DE8905080U1 (fr)
PT (1) PT8333U (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8900466U1 (fr) * 1989-01-17 1989-03-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
JP5711044B2 (ja) * 2010-12-02 2015-04-30 富士電機株式会社 電磁接触器、電磁接触器のガス封止方法及び電磁接触器の製造方法
CN112788936A (zh) * 2020-12-31 2021-05-11 杭州拓深科技有限公司 一种防触电及静电击穿的三相电气火灾探测报警器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1820375A (en) * 1925-04-03 1931-08-25 Ohio Brass Co Molded receptacle
US1935465A (en) * 1931-06-01 1933-11-14 Bosch Robert Interrupter for ignition apparatus
US2870300A (en) * 1957-05-20 1959-01-20 Morse Milton Pressure equalizing hermetically sealing boot
US3336457A (en) * 1965-10-01 1967-08-15 Gen Motors Corp Filter for ignition distributor
DE2016902B2 (de) * 1970-04-09 1972-03-02 E Haller & Co, 7209 Wehingen Relaishaube
JPS6021878Y2 (ja) * 1979-10-23 1985-06-29 富士通株式会社 プリント板用継電器
JPS53156056U (fr) * 1977-05-13 1978-12-07
JPS5539154A (en) * 1978-09-12 1980-03-18 Matsushita Electric Works Ltd Method of fabricating gassfilled electric switch
DE7929603U1 (de) * 1979-10-19 1982-12-02 Robert Bosch Gmbh, 7000 Stuttgart Elektrisches Gerät, vorzugsweise Relais für Kraftfahrzeue
WO1982000918A1 (fr) * 1980-09-01 1982-03-18 Kinoshita Y Relais electromagnetique et son procede de fabrication
DE8703079U1 (fr) * 1987-02-27 1987-04-16 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De

Also Published As

Publication number Publication date
EP0393628A3 (fr) 1992-05-20
DE8905080U1 (fr) 1990-08-16
PT8333T (pt) 1992-03-31
JPH02136947U (fr) 1990-11-15
EP0393628A2 (fr) 1990-10-24
US5051540A (en) 1991-09-24
DE59007666D1 (de) 1994-12-15
ATE114075T1 (de) 1994-11-15
PT8333U (pt) 1994-09-30

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