EP0396098A2 - Method of manufacturing base of electromagnetic relay - Google Patents
Method of manufacturing base of electromagnetic relay Download PDFInfo
- Publication number
- EP0396098A2 EP0396098A2 EP19900108259 EP90108259A EP0396098A2 EP 0396098 A2 EP0396098 A2 EP 0396098A2 EP 19900108259 EP19900108259 EP 19900108259 EP 90108259 A EP90108259 A EP 90108259A EP 0396098 A2 EP0396098 A2 EP 0396098A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal portion
- base
- electromagnetic relay
- molded item
- plating
- 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.)
- Withdrawn
Links
Images
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof
Definitions
- the present invention relates to a method of manufacturing a base of an electromagnetic relay.
- the terminals are press fitted into holes formed on the base or are integrally molded with the base so as to be fixed to the base.
- an essential object of the present invention is to provide, with a view to eliminating the above mentioned disadvantages inherent in the conventional electromagnetic relays, a method of manufacturing a base of an electromagnetic relay.
- a method of manufacturing a base of an electromagnetic relay comprises the step of: treating a surface of a resinous molded item to a state enabling plating on the surface of the resinous molded item such that the resinous molded item has an upper terminal portion, a lower terminal portion and a side terminal portion connecting the upper terminal portion and the lower terminal portion; molding integrally with the resinous molded item, resin disabling plating thereon such that at least surfaces of the upper terminal portion, the lower terminal portion and the side terminal portion are exposed outwardly; and plating an electrically conductive film on only the surfaces of the upper terminal portion, the lower terminal portion and the side terminal portion.
- an outer member 1 of an electromagnetic relay manufactured by a method according to a first embodiment of the present invention is constituted by a cover 2 and a base 3.
- the cover 2 is made of electrically nonconductive resin.
- the base 3 is constituted by a terminal frame 4 and a base body 6.
- the terminal frame 4 includes a plurality of terminal supports 5 which are integrally coupled with each other.
- liquid crystal polymer having excellent plating characteristics for example, "VECTRA C810" (name used in trade and manufactured by POLY PLASTICS CO, LTD of Japan) is integrally molded in a mold.
- a molded item taken out of the mold is subjected to various treatment processes such as degreasing by degreaser of surface-active agent, etching by aqueous solution of potassium hydroxide, catalytic treatment by palladium series colloidal catalyst, etc., whereby it becomes possible to plate on surface of the molded item.
- resin having ordinary heat resistance and disabling plating thereon for example, "VECTRA C130" (name used in trade and manufactured by POLY PLASTICS CO, LTD of Japan) is molded integrally with the surface treated terminal frame 4 so as to form the base body 6 integrally with the terminal frame 4.
- This integral molding is performed such that only an upper face 5a, an outer side face 5b and a lower face 5c of each of the terminal supports 5 are exposed outwardly.
- the terminal frame 4 having the base body 6 attached thereto is dipped in electroless copper plating solution such that an electrically conductive film is formed only on the exposed upper face 5a, outer side face 5b and lower face 5c of each of the terminal supports 5.
- the electrically conductive film formed on the upper face 5a, the outer side face 5b and the lower face 5c of each of the terminal supports acts as a terminal.
- inner electric parts of the electromagnetic relay are disposed at predetermined positions of the base body 6 and electric connectors such as an electromagnetic coil, a contact member, etc. are electrically connected to the electrically conductive film on the upper face 5a.
- the base 3 having the inner electric parts mounted thereon is covered by the cover 2 and contact portions between the base 3 and the cover 2 are sealed by sealing compound (not shown) such that inner space of the cover 2 is filled with the sealing compound.
- the electromagnetic relay is placed on a substrate and the electrically conductive film on the lower face 5c of the base 3 is connected to electric connectors on the substrate by using electrically conductive bonding agent or by soldering.
- soldering even if heat of molten solder is transferred to the electrically conductive film so as to fuse the sealing compound held in contact with the electrically conductive film, the cover 2 and the base 3 are held immovably through contact of the base body 6 of the base 3 with the cover 2 and thus, sealing of the sealing compound is not disrupted.
- Figs. 3 to 6 show an electromagnetic relay manufactured by a method according to a second embodiment of the present invention.
- the electromagnetic relay includes a base 13, a terminal frame 14 and a plurality of terminal supports 15 each having an upper face 15a, an outer side face 15b and a lower face 15c and a base body 16.
- a recess 17 is formed on the upper face 15a.
- a connecting portion of an inner electric part is press fitted into the recess 17 so as to be electrically connected to the electrically conductive film on the upper face 15a. Since other constructions of the electromagnetic relay of Figs. 3 to 6 are similar to those of the electromagnetic relay of Figs. 1 and 2, description thereof is abbreviated for the sake of brevity.
- the sealed electromagnetic relay can preserve satisfactory performance for a long period.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP113226/89 | 1989-05-02 | ||
JP1113226A JP2781890B2 (ja) | 1989-05-02 | 1989-05-02 | 電磁継電器のベースの製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0396098A2 true EP0396098A2 (en) | 1990-11-07 |
Family
ID=14606764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900108259 Withdrawn EP0396098A2 (en) | 1989-05-02 | 1990-04-30 | Method of manufacturing base of electromagnetic relay |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0396098A2 (ja) |
JP (1) | JP2781890B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2284566A (en) * | 1993-12-09 | 1995-06-14 | Methode Electronics Inc | Printed polymer circuits and contacts |
WO2000068963A1 (de) * | 1999-05-07 | 2000-11-16 | Tyco Electronics Logistics Ag | Elektromagnetisches relais und verfahren zu dessen herstellung |
-
1989
- 1989-05-02 JP JP1113226A patent/JP2781890B2/ja not_active Expired - Lifetime
-
1990
- 1990-04-30 EP EP19900108259 patent/EP0396098A2/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2284566A (en) * | 1993-12-09 | 1995-06-14 | Methode Electronics Inc | Printed polymer circuits and contacts |
FR2713830A1 (fr) * | 1993-12-09 | 1995-06-16 | Methode Electronics Inc | Composant conducteur pour transporter des signaux électriques et procédé pour la réalisation d'un tel composant. |
US5599595A (en) * | 1993-12-09 | 1997-02-04 | Methode Electronics, Inc. | Printed plastic circuits and contacts and method for making same |
GB2284566B (en) * | 1993-12-09 | 1998-05-06 | Methode Electronics Inc | Printed plastic circuits and contacts and method for making the same |
WO2000068963A1 (de) * | 1999-05-07 | 2000-11-16 | Tyco Electronics Logistics Ag | Elektromagnetisches relais und verfahren zu dessen herstellung |
Also Published As
Publication number | Publication date |
---|---|
JPH02291625A (ja) | 1990-12-03 |
JP2781890B2 (ja) | 1998-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19900525 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19910405 |
|
R18W | Application withdrawn (corrected) |
Effective date: 19910405 |