CN2850027Y

CN2850027Y - Terminal pin for cordless electrical appliance, electric connector device and electrical appliance

Info

Publication number: CN2850027Y
Application number: CNU032801203U
Authority: CN
Inventors: 文森特·J·加维; 迈克尔·J·斯科特
Original assignee: Strix Ltd
Current assignee: Strix Ltd
Priority date: 2002-08-05
Filing date: 2003-08-05
Publication date: 2006-12-20
Anticipated expiration: 2013-08-05
Also published as: RU55524U1; EP1394904A1; GB0318340D0; EP1394904B1; GB0218138D0; DE60331123D1; GB2393593B; GB2393593A; ATE456873T1

Abstract

The utility model discloses a terminal pin for cordless electrical appliances. The terminal pin is provided with a slim contacting surface which is made of metal material with no zinc.

Description

Terminal latch, electric connector and the electrical equipment of cordless electrical equipment

Technical field

The utility model relates to a kind of terminal latch, and particularly a kind of terminal latch that is used for as the cordless electrical equipment of insulating pot and hot-water bottle (hotwaterjugs) also relates to a kind of electric connector and electrical equipment.

Background technology

In the electrical equipment of traditional use electric wire, be connected the terminal latch of the supply socket insertion electrical equipment on the power supply.The terminal latch is generally made with brass.In cordless electrical equipment, electrical equipment places link to each other with power supply one above the power socket, and the terminal latch of electrical equipment and the contact of the electric connector on the power socket electrically contact.Have been found that in such application, the electric arc that produces during owing to terminal latch and corresponding power socket engage contacts, the terminal latch of brass is easy to wearing and tearing and aging.

The utility model content

The utility model manages to overcome the problems referred to above just.Therefore, first purpose of the present utility model provides a kind of terminal latch that is used for not using the electrical equipment of electric wire, and described latch has long and narrow contact-making surface, and described contact-making surface is made by the metal material that does not contain zinc.

Described material can be valuable metals like gold, silver or its alloy, or other metals such as copper, tin, nickel or iron or its alloy.

In an embodiment of the present utility model, contact-making surface can be formed by the coating that is plated on the latch.

In another embodiment, long and narrow contact-making surface can be formed by the independently elongate structure that is fit to be connected on the latch.

Described independently elongate structure can be connected or place slit, groove or the groove on the latch surface with the outer surface level of latch.

Described member can be welded on the latch or be pressed onto on the latch by the method for for example electron beam or Laser Welding.

Described member can be bar material, the folding cap that covers latch or around the sleeve of latch.Equally, cap or sleeve can adopt above-mentioned any method to connect.

The thickness of described independently elongate structure more preferably greater than 0.3mm, thereby can provide enough intensity and corrosion stabilities more preferably greater than 0.2mm.

Contact-making surface preferably extends 10mm at least along the surface of latch.

As mentioned above, contact material can be that precious metal is as silver or golden.It is useful especially that silver is used for this purpose, and its alloy also can use.Typically, alloy comprises enough silver, and alloy also comprises as nickel, cadmium or tin in addition.

Latch itself can adopt any material to make, as brass or iron.

The metal that the whole employings of whole latch do not contain zinc also is feasible, thereby the further purpose of the utility model provides the terminal latch that a kind of cordless electrical equipment is used, and described terminal latch is made of the metal or metal alloy that does not contain zinc.

Latch can be made as silver or silver-colored alloy by precious metal.Described latch can also adopt iron, copper, tin, nickel or its alloy.

Aforesaid latch is specially adapted to cordless electric connector.Latch can be installed on the electrical equipment with any suitable form, but preferably can form the part of electrical equipment temperature-sensitive control element, as the applicant's R7 series control technology.

The utility model also relates to a kind of cordless electric connector, and this device comprises the connector part that contains with good grounds latch of the present utility model and has the power socket connector part that is used for the contact that electrically contacts with latch.

The contact of power socket can be installed on the sheet spring that is made of copper, iron or its alloy or be exactly sheet spring itself.For example, the contact can be made of silver, silver alloy, tin, ashbury metal, nickel or the nickel alloy of backing copper, and the contact that pure silver, silver alloy, tin, ashbury metal, nickel, nickel alloy, copper or copper alloy are made is also passable.Typically, these contact rivetings are fixed to the sheet spring.

As selection, the sheet spring can also be in its surface superimposed by silver, copper, tin, nickel (or its alloy).Typically, these materials provide with the form of coil or winding, thereby can be fixed on the latch by welding or alternate manner.

Contact-making surface can also form by above-described material is plated on the sheet spring.

In an alternative, above-mentioned contact can be installed on the wind spring.

Contact on the power socket preferably is arranged to when electrical equipment places on the power socket, and moving form is wiped along contact-making surface in the contact.

Description of drawings

In conjunction with following accompanying drawing embodiment more of the present utility model are described exemplarily now, in the accompanying drawing:

Fig. 1 is cordless electric kettle;

Fig. 2 shows the terminal latch that the kettle among Fig. 1 adopts;

Fig. 3 is the end view of the latch among Fig. 2;

Fig. 4 shows the latch of electric kettle and being connected of power socket connector;

Fig. 5 A-5D shows the form according to various terminal latches of the present utility model; And

Fig. 6 A-6E shows the form according to various power sockets of the present utility model contact.

Embodiment

With reference to figure 1, cordless electric kettle 2 has the kettle body 4 that places on the power socket 6.Cordless power connector 8 extends upward from the surface of power socket 6 and is used to hold terminal latch 10 on the kettle body 4.Power lead 12 links to each other with connector 8, and lead 12 has the plug 14 that can be inserted in the wall socket.

As shown in Figure 2, the terminal latch 10 of kettle body 4 has

latch

10a, 10b and the earth terminal latch 10c of live wire end, zero line side.As be known in the art, terminal latch 10 can form the integral part of the thermally sensitive control unit 16 of kettle.For example, control unit can adopt a kind of in the applicant's the R7 series control technology.

As shown in Figure 4, live wire and zero

line latch

10a, 10b install contact 18 with the sheet spring that is positioned at electric connector 8 separately and match, in this example, the P69 connector that electric connector is the applicant, can buy on market (for clarity sake only show a latch, but all cooperate in an identical manner).Latch 10a, 10b, 10c are introduced by the slit 20 that is positioned at connector 8 tops, shield 22 sealings that slit 20 is spring loaded when normal the use, and when kettle 4 was put on the power socket 6, shield 22 was shifted onto on one side by ground wire latch 10c.When inserting connector 8, ground wire latch 10c cooperates with the sheet spring (not shown) of ground connection.

As from can also finding out Fig. 4, when kettle 4 and control unit 16 place on the connector 8 down, contact 18a will move to solid line position from dotted line position, and promptly it moves along the longitudinal component of

terminal latch

10a, 10b, thereby wipe moving effectively along

terminal latch

10a, 10b.

The terminal latch of the different structure shown in the present 5A to 5D with the aid of pictures.

In Fig. 5 A, the latch 30 solid latch that the metal that do not contain zinc constitutes as silver, iron, copper, tin, nickel or its alloy of serving as reasons.

In Fig. 5 B, latch 32 has main body 34, described main body also can be made of above-mentioned material or brass, latch also comprise place above the main body, inner, run through wherein or the contact zone 36 by the stronger material of conductivity (as silver, copper, tin, nickel or its alloy) formation at edge.The material 36 that is placed in one can be fixed on the main body 34 of latch as Laser Welding or electron beam welding or other modes by welding.As shown, contact zone 36 down and may extend into the whole length of

latch

10a, 10b, 10c or only extending lengthwise into the range of movement that is enough to comprise connector contact 18.

In Fig. 5 C, latch 38 has the main body of being made by above-mentioned material 40 and can cooperate cap or the sleeve 42 that forms contact-making surface with main body 40.Equally, cap or sleeve 42 preferably are made of as silver, copper, tin, nickel or its alloy the material stronger than main body 40 conductivity.

Typically, the thickness of cap or sleeve 42 greater than 0.3mm to guarantee enough intensity.Cap or sleeve 42 can be fixed on the latch by any suitable method such as above-mentioned welding.The benefit of this scheme is no matter latch 10 is installed in control unit or other connectors in which way, and latch always has a surface to become contact area.

In Fig. 5 D, latch 44 has the main body 46 that is made of above-mentioned material and preferably by the coating of making than the stronger material of main body 46 conductivity 48, as being made by silver, copper, tin, nickel or its alloy.

Present 6A to 6E with the aid of pictures has provided the contact member that is applicable to the latch among Fig. 5 of various structures.

Contact member 50 among Fig. 6 A has riveting thereon sheet spring 52 contact 54, that typically made by copper or ferroalloy surely.The front that contact 54 has copper backing 56 and made by silver, tin, nickel or its alloy.

Contact member 60 among Fig. 6 B has riveting thereon sheet spring 62 contact 54, that typically made by copper or ferroalloy surely equally, and the contact 54 in the present embodiment is made by pure silver, tin, nickel or its alloy, and is connected on the sheet spring 62.

Contact member 70 among Fig. 6 C has the sheet spring of typically being made by copper or ferroalloy 72 that has coating contact-making surface 74 equally.Contact-making surface is made by silver, tin, nickel or its alloy.

Contact member 80 among Fig. 6 D has the sheet spring of typically being made by copper or ferroalloy, have attached contact 84 thereon 82 equally.Contact 84 is made by silver, tin, nickel or its alloy, and typically is connected on the sheet spring 82 with the form of winding or coil.

More than all

contact members

50,60,70,80 all are as shown in Figure 4 spring structures.And in the structure of Fig. 6 E, contact member 90 has the spiral spring of making as copper, iron or its alloy, and is provided with contact 94 thereon, and contact 94 can be the form shown in Fig. 6 A and 6B, contact for example fine copper or backing copper.

Various latches among Fig. 5 A-5D can be used with any latch among Fig. 6 A-6E.

Claims

1, a kind of terminal latch that is used for cordless electrical equipment is characterized in that described latch has long and narrow contact-making surface, and described contact-making surface is made by the metal material that does not contain zinc.

2, terminal latch as claimed in claim 1, wherein, described metal is selected from and comprises gold, silver, copper, tin, nickel or iron or any alloy of forming of above-mentioned several metal.

3, terminal latch as claimed in claim 2, wherein, described metal material is the silver alloy that comprises nickel, cadmium or tin.

4, as claim 1,2 or 3 described terminal latches, wherein, contact-making surface is made of the coating on the latch.

5, as claim 1,2 or 3 described terminal latches, wherein, long and narrow contact-making surface is made of the independently elongate structure that is connected on the latch.

6, terminal latch as claimed in claim 5, wherein, described member is connected with the outer surface level of latch or places slit, groove or groove on the latch surface.

7, as claim 5 or 6 described terminal latches, wherein, described member is attached on the latch or is pressed on the latch by being welded to connect.

8, as claim 5 or 6 described terminal latches, wherein, described member can be a bar material, or the folding cap that covers latch or around the sleeve of latch.

9, as claim 5 or 6 described terminal latches, wherein, the thickness of described member is greater than 0.2mm, more preferably greater than 0.3mm.

10, as each described terminal latch among the claim 1-3, wherein, contact-making surface extends 10mm at least along the surface of latch.

11, as claim 1,2 or 3 described terminal latches, wherein, latch integral body is made by described metal material.

12, a kind of cordless electric connector that has as each described latch among the claim 1-3.

13, a kind of cordless electric connector, the power socket connector part that described device comprises connector part as claimed in claim 12 and has the contact that contacts with latch.

14, cordless electric connector as claimed in claim 13, wherein, the contact is made of silver, silver alloy, tin, ashbury metal, nickel or the nickel alloy of backing copper.

15, cordless electric connector as claimed in claim 13, wherein, the contact is made by fine silver, silver alloy, tin, ashbury metal, nickel, nickel alloy, copper or copper alloy

16, cordless electric connector as claimed in claim 13, wherein, the contact can be installed on the sheet spring or be exactly sheet spring itself.

17, cordless electric connector as claimed in claim 16, wherein, the sheet spring is made by copper, iron or its alloy.

18, cordless electric connector as claimed in claim 16, wherein, the sheet spring has pressure and is stacked in its lip-deep silver, copper, tin, nickel or its alloy.

19, cordless electric connector as claimed in claim 16, wherein, contact-making surface comprises a kind of material that is plated on the sheet spring.

20, as claim 13,14 or 15 described cordless electric connectors, wherein, the contact is installed on the wind spring.

21, as each described cordless electric connector in the claim 13 to 15, wherein, contact arrangement becomes when connector component lumps together wipes moving form along contact-making surface.

22, a kind of cordless electrical equipment with electric connector as claimed in claim 12.

23, cordless electrical equipment as claimed in claim 22, wherein, latch forms the part of the temperature-sensitive control element of electrical equipment.

24, a kind of cordless electrical equipment with electric connector as claimed in claim 13.