GB2239743A - Electric plug with oriented sheathed pins - Google Patents

Electric plug with oriented sheathed pins Download PDF

Info

Publication number
GB2239743A
GB2239743A GB9000154A GB9000154A GB2239743A GB 2239743 A GB2239743 A GB 2239743A GB 9000154 A GB9000154 A GB 9000154A GB 9000154 A GB9000154 A GB 9000154A GB 2239743 A GB2239743 A GB 2239743A
Authority
GB
United Kingdom
Prior art keywords
pins
base
shrouds
plug
pin
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
GB9000154A
Other versions
GB2239743B (en
GB9000154D0 (en
Inventor
Tai Choi Chan
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.)
BOWDEN IND Ltd
Original Assignee
BOWDEN IND Ltd
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 BOWDEN IND Ltd filed Critical BOWDEN IND Ltd
Priority to GB9000154A priority Critical patent/GB2239743B/en
Publication of GB9000154D0 publication Critical patent/GB9000154D0/en
Publication of GB2239743A publication Critical patent/GB2239743A/en
Application granted granted Critical
Publication of GB2239743B publication Critical patent/GB2239743B/en
Priority to HK93294A priority patent/HK93294A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

A method of making plugs, comprises inserting pins (2a, 2b, 2c) into a moulding die, orientating the pins (2a, 2b, 2c) to the appropriate orientation using slits (4c) in the pins so as to facilitate subsequent connection of electrical leads, and performing a single moulding operation which simultaneously forms the base (1) of the plug housing and insulating shrouds (3b, 3c) extending from the base (1) along part of the length of the live pins (2b, 2c). The base (1) and insulating shrouds (3b, 3c) are integrally formed with one another.

Description

Electric Plum, and method of manufacture thereof The present invention relates to electric plugs comprising one or more pins. In this specification that end of a pin which is secured to the housing of the plug will hereinafter be referred to as the "plug end" of the pin and that end of the pin which is inserted into the aperture of an electrical socket will hereinafter be referred to as the "socket end" of the pin.
The invention provides an improved method of making such plugs comprising the steps of (a) inserting the pin or pins into a moulding die; (b) orientating the pin or pins relative to the die to a predetermined orientation so as to facilitate subsequent connection of electrical leads to the pin or pins; and (c) performing a single moulding operation which simultaneously forms the base of the plug housing and insulating shrouds extending from the base of the plug housing along part of the length of the live pins, the base and insulating shrouds being integrally formed with one another.
The method of the invention has many advantages over existing methods of making plugs. A single moulding operation forms the base of the plug housing, forms the insulating shrouds, and joins the base, the shrouds and the pins to one another, with the pins correctly aligned for subsequent connection of electrical leads.
Pins are known which are round and which are slit axially along part of their length. The purpose of this slit is to enable the pin to be a force fit in a socket contact so as to facilitate good electrical contact between the pin and the side walls of the socket contact.
When the method of the invention is used to make plugs which have round slit pins of the type described, then in accordance with a preferred method of carrying out the invention, the step of orientating the pins relative to the die to the desired predetermined orientation is carried out by reference to the orientation of the slit in the pins.
The invention also provides a plug comprising a base for the plug housing, and insulating shrouds for the pins, the base and insulating shrouds being formed integrally with one another, with the pins being moulded into the base and the shrouds in an orientation which facilitates subsequent electrical connections.
The invention will now be described more particularly with reference to the accompanying drawings which show, by way of example only, one construction of plug according to the invention comprising two live round pins, and one round earth pin, with the cover or roof of the plug housing omitted for clarity. In the drawings: Figure 1 is a perspective view from above; and Figure 2 is a perspective view from below.
Referring to the drawing, the plug will now be described in detail. The plug comprises a base 1 of the plug housing1 an earth pin 2a and live pins, 2b, 2c, and cylindrical insulating pin shrouds, 3b, 3c and a plug cover (not shown). The base 1 and the pin shrouds, 3b, 3c are formed as part of a single integral plastic moulding. The pins 2a, 2b, 2c are aligned so that the slits 4b, 4c are mutually parallel and are mutually at right angles to slit 4c. With the gaps 4a, 4b, 4c appropriately aligned, the aperture 5a, 5b, Sc at the plug end of the pins are each orientated in the appropriate direction to facilitate connection of electrical leads (not shown). From the drawings it will be noted that the inside face of the base 1 of the plug housing is planar over all of its area, save for the three guides 6a, 6b, 6c for the pins. The planar nature of the base 1 also facilitates connection of the electrical leads. The base 1 is made of a transparent plastic material which allows the electrical connections in the plug housing to be inspected without the need to disassemble the housing.
The plug is manufactured by placing the three pins 2a, 2b, 2c in a die (not shown), aligning the pins so that the gaps 4a, 4b, 4c are appropriately orientated, and then performing the moulding operation to produce the base 1 and the insulating shrouds, 3b, 3c.

Claims (5)

1. A method of making plugs comprising one or more pins, comprising the steps of: (a) inserting the pin or pins into a moulding die; (b) orientating the pin or pins relative to the die to a predetermined orientation so as to facilitate subsequent connection of electrical leads to the pin or pins; and (c) performing a single moulding operating which simultaneously forms the base of the plug housing and insulating shrouds extending from the base of the plug housing along part of the length of the live pins, the base and shrouds being integrally formed with one another.
2. A method according to claim 1 for use in making plugs which have round slit pins, in which the step of orientating the pins relative to the die to the desired predetermined orientation is carried out by reference to the orientation of the slit in the round pins.
3.A method of making plugs substantially as herein described with reference to the accompanying drawings.
4. A plug comprising a base for the plug housing, and insulating shrouds for the live pins, the base and shrouds being formed integrally with one another, with the pins being moulded into the base and the insulating shrouds in an orientation which facilitates subsequent electrical connections.
5. A plug substantially as herein described with reference to and as shown in the accompanying drawings.
GB9000154A 1990-01-04 1990-01-04 Electric plug Expired - Fee Related GB2239743B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9000154A GB2239743B (en) 1990-01-04 1990-01-04 Electric plug
HK93294A HK93294A (en) 1990-01-04 1994-09-08 Electric plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9000154A GB2239743B (en) 1990-01-04 1990-01-04 Electric plug

Publications (3)

Publication Number Publication Date
GB9000154D0 GB9000154D0 (en) 1990-03-07
GB2239743A true GB2239743A (en) 1991-07-10
GB2239743B GB2239743B (en) 1994-04-06

Family

ID=10668828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9000154A Expired - Fee Related GB2239743B (en) 1990-01-04 1990-01-04 Electric plug

Country Status (2)

Country Link
GB (1) GB2239743B (en)
HK (1) HK93294A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017128503A1 (en) * 2016-01-29 2017-08-03 成都阿尔刚雷科技有限公司 Insulating sheath of plug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB429219A (en) * 1934-04-11 1935-05-27 John Ashworth Crabtree Improvements in, or relating to, electrical coupling plugs
GB2185156A (en) * 1986-01-08 1987-07-08 Graesslin Feinwerktech Pin shields on electric plugs
GB2197138A (en) * 1986-09-24 1988-05-11 Stellar Components Limited Electrical plugs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB429219A (en) * 1934-04-11 1935-05-27 John Ashworth Crabtree Improvements in, or relating to, electrical coupling plugs
GB2185156A (en) * 1986-01-08 1987-07-08 Graesslin Feinwerktech Pin shields on electric plugs
GB2197138A (en) * 1986-09-24 1988-05-11 Stellar Components Limited Electrical plugs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017128503A1 (en) * 2016-01-29 2017-08-03 成都阿尔刚雷科技有限公司 Insulating sheath of plug
US10630017B2 (en) 2016-01-29 2020-04-21 Argangle Technology Co. Ltd. Insulating sheath of plug

Also Published As

Publication number Publication date
GB2239743B (en) 1994-04-06
GB9000154D0 (en) 1990-03-07
HK93294A (en) 1994-09-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020104