WO2008071080A1

WO2008071080A1 - A switching power with an interchangeable plug

Info

Publication number: WO2008071080A1
Application number: PCT/CN2007/003525
Authority: WO
Inventors: Yongde Gu
Original assignee: Yongde Gu
Priority date: 2006-12-12
Filing date: 2007-12-11
Publication date: 2008-06-19
Also published as: CN200990439Y

Abstract

A switching power with and interchangeable plug comprises a housing (1) of the switching power and a plug (2) for connecting to the power. In the housing (1) of the switching power, a PCB and a transformer are provided. The plug (2) is a style of plug-in and can be movable. A circular plug-in end (3), on the lower side of which there are two projecting blocks (5), is provided on the lower side of the plug (2). The metal prongs (6) of the plug (2) are respectively connected to the contacts (7) provided on the bottom of the plug (2). A plug-in interface (8) is provided on the housing (1) of the switching power. The plug-in interface (8) is acircular recess cooperating with the plug (2). On the lateral walls of the recess, two pits (10) are provided, which are used to receive the blocks (5) on the lower side of the plug (2). On the lateral walls of the plug-in interface (8) connecting with the pits (10), two sliding slots (11) are provided. On the middle of the plug-in interface (8), there are contacting pieces (9), the number of which is as same as the number of the contacts (7) of the plug (2) and the positions of which are corresponding to the positions of the contacts (7).

Description

Switchable power supply with replaceable plug

[Technical Field] The present invention relates to the field of power switches and chargers, and more particularly to a novel switching power supply that adapts to different national standard socket holes by replacing plugs of different standards.

BACKGROUND OF THE INVENTION With the development of technology, more and more portable appliances with charging functions are being used. For example, portable computers, mobile phones, and fax machines. These appliances with rechargeable batteries bring more convenience to people's lives and work, but for rechargeable batteries of different voltages, many portable electrical appliances have built-in transformers so that users can adjust the supply voltage as needed. Although portable appliances bring a lot of convenience to people, there are different specifications for plugs and sockets for electrical appliances in different countries in the world. For example, in the UK, Hong Kong, Singapore, etc., the wall socket is BS type. It has three rectangular holes; in the United States, Canada, etc., the wall socket is UL type, which has two flat holes; in other European countries such as Germany, the wall socket is W3E type, which has two round holes; in Oceania In Australia and New Zealand, the wall socket is SAA type, which has two flat holes that are inclined to each other. These standards allow the portable charging device described above to be connected to a municipal power supply system using plugs of different specifications. The above phenomenon has caused inconvenience to both users and producers. For example, users who frequently go abroad need to carry a plurality of chargers of different specifications that can provide the same voltage for travel, and producers also need to produce the above-mentioned various types. Specifications of the charger to meet this demand. The above phenomenon has caused inconvenience to both producers and users. After industry investigation, this problem has not appeared in the industry so far.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a switching power supply that can replace plugs of different specifications by avoiding the above-mentioned deficiencies of the prior art. The switching power supply adopts a technical scheme in which the switching power supply casing and the connecting component are separated, and the user can freely combine the plug with different types of pins and the switching power supply casing as needed to firmly connect the plug and the switching power supply main body. Allow users to replace the plug by carrying only different specifications The head can meet the new switching power supply that matches the various specifications of the socket.

In order to achieve the above technical purpose, the technical solution adopted by the present invention includes the following contents: a switching power supply of a replaceable plug, including a switching power supply housing and a plug-in component, wherein the switching power supply housing has a printed circuit board and a transformer therein And a plug for connecting a power source, wherein the power plug is of a movable plug type, the lower end of the plug is provided with a circular plug end, and the lower part of the plug end is provided with at least two protruding clips, The metal pins of the plug are respectively electrically connected to the contact points at the bottom of the plug, and the plug power supply housing is provided with a plug interface matched with the plug, the plug interface is a circular recess matched with the power plug, the recess At least two recesses are provided on the side wall of the pit, and the recess is used for inserting the block at the lower end of the plug, and the side wall of the plug connector connected to the recess is provided with arc-shaped chutes at both ends In the middle of the above-mentioned plug connector, the same number of contact pieces corresponding to the position of the plug contact point are provided.

The bottom of the dimple is provided with a fixed card formed integrally with the switching power supply casing, and the fixed card is separated from the switching power supply casing by a U-shaped slit, and the end is provided with a protruding card. Point, the corresponding position of the bottom of the power plug is provided with a recessed fixing groove that cooperates with the card point.

The card point is a ratchet.

The contact point of the lower part of the power plug is a metal piece disposed in the lower recess of the plug, the position and the number of the metal piece are corresponding to the contact piece, and the metal piece is electrically connected to the pin.

The power plug has two or three pins and has different cross-sectional shapes.

The power plugs respectively are two parallel flat metal sheets satisfying the pins of the connector component, and conform to the American UL standard.

Each of the power plugs and the pins are two flat metal pieces with a certain inclination angle of 50%, which conforms to the Australian SAA standard.

The pins of the power plug are two parallel metal cylinders, which conform to the German VDE standard.

The pins of the power plug are three three-legged rectangular-section metal cylinders, and one of the pins for grounding has a larger cross section and conforms to the British BS standard.

The present invention achieves the following advantages and technical effects by adopting the above technical solution: The present invention realizes the switch by adopting a configuration in which a pit is provided on a switching power supply casing, and a baffle plate and a card block provided on the plug are used. Active connection of the power supply body and the plug; By arranging a plurality of plugs that meet different national standards on one switching power supply, one switching power supply can be adapted to the function of plugs of multiple countries by replacing the plug; by setting the tongue shape at the bottom of the pit a sheet-like fixing card, and a ratchet-shaped card point is arranged on the fixed card, and corresponding pits are arranged at the bottom of the plug, so that the above plug is inserted on the switching power supply body to be more firm; in short, the invention passes the activity Connected structure, relying on the most The simple structure realizes the adaptability of the user to plugs of various national specifications by carrying plugs of different specifications, and the use is simple and convenient; for the producer, it is also possible to produce only one switching power supply with a plurality of different The plugs of the specifications are matched to meet the requirements of different national standards for switching power supplies.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a main portion of a switching power supply according to the present invention;

Figure 2 is a front elevational view of the main portion of the switching power supply of the present invention;

Figure 3 is a schematic structural view of the bottom of the plug of the present invention;

4 is a perspective view of a plug conforming to the UL standard of the present invention;

5 is a perspective view of another angle of the plug conforming to the UL standard of the present invention; FIG. 6 is a perspective view of the switching power supply according to the UL standard of the present invention;

Figure 7 is a perspective view of a plug conforming to the BS standard of the present invention;

8 is a perspective view of another angle of the plug conforming to the B S standard according to the present invention; FIG. 9 is a perspective view of the switching power supply according to the BS standard according to the present invention;

10 is a perspective view of a plug conforming to the VDE standard of the present invention;

11 is a perspective view of another angle of the plug conforming to the VDE standard of the present invention; FIG. 12 is a perspective view of the switching power supply conforming to the VDE standard of the present invention;

Figure 13 is a perspective view of a plug conforming to the SAA standard of the present invention;

Figure 14 is a perspective view of another angle of the plug conforming to the SAA standard of the present invention; Figure 15 is a perspective view of the switching power supply conforming to the SAA standard of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described below in conjunction with the accompanying drawings:

As shown in FIG. 1 to FIG. 3, the present invention is a switchable power supply for a replaceable plug, comprising a switching power supply housing and a plug-in component, wherein the switching power supply housing 1 is provided with a printed circuit board and a transformer component, and the above-mentioned transformer component Designed with more specific use requirements for printed circuits, a major improvement of the present invention is the use of a split-type structure to connect the plug portion to the switching power supply body. The power plug 2 is of the movable plug type, and the lower end of the plug 2 is provided with a circular plug end 3, and the plug end 3 is inserted into the plug interface. 8 is used for connection to a switching power supply. The lower part of the plug end 3 is provided with at least two protruding blocks 5, the metal pins 6 of which are respectively electrically connected to the contact points 7 at the bottom of the plug 2, after being inserted, through the contact points 7 and The engagement of the contact strips 9 in the plug connector 8 on the switching power supply enables an electrical connection between the plug 2 and the switching power supply enclosure 1. The switch power supply housing 1 is provided with a plug connector 8 that cooperates with the plug 2 described above. The plug connector 8 is a circular recess that cooperates with the power plug 2, and at least two sidewalls of the recess are provided. The recess 10, the recess 10 is for inserting the block 5 at the lower end of the plug 2, and the side wall of the plug connector 8 connected to the recess 10 is provided with a circular arc-shaped sliding groove 11 at the above end. The middle portion of the plug connector 8 is provided with the same number of contacts 9 of the contact point 7 of the plug 2. The contact point 7 at the lower portion of the power plug 2 is a metal piece disposed in the lower pit of the plug, the position and number of which are corresponding to the contact piece 9, and the metal piece is electrically connected to the pin 6. After the plug end 3 of the plug 2 is inserted into the plug connector 8 of the switching power supply housing 1, the two protruding tabs 5 on the plug end 3 enter the chute 11 through the recess 10 in the sidewall of the recess. Then, the above-mentioned plug 2 is rotated, and when the block 5 provided on the plug 2 is slid to the end position of the chute 11, the connection of the plug 2 and the switching power supply can be realized; at the same time, the contact point 7 provided on the plug 2 is provided. It coincides with the position of the contact piece 9 provided in the plug connector 8, thereby realizing the circuit connection of the plug 2 and the internal circuit of the switching power supply.

As shown in FIG. 1 to FIG. 3, the bottom of the plug connector 8 in the switching power supply is provided with a fixed card 12 formed integrally with the switching power supply housing, and the fixed card 12 is separated from the switching power supply housing 1 through the U-shaped slot 4. The tongue-shaped sheet is formed, and the fixed card 12 is integrally formed between the tongue-shaped sheet and the switching power supply casing, and the fixing of the fixing card 12 made of a plastic material is used to fix and fix the plug. The end of the card 12 is provided with a raised snap point 13 which is in the shape of a ratchet. The corresponding position of the bottom of the power plug 2 is provided with a recessed fixing groove 14 which cooperates with the click point 13. Through the above structure, when the plug 2 is inserted into the plug connector 8 of the switching power supply and selected, due to the characteristics of the ratchet-shaped snap point 13, the plug 2 can be properly inserted after the plug 2 is rotated into position. In the fixing groove 14 on the plug end 3, the plug 2 and the switching power supply case 1 are tightly connected together. When the plug 2 needs to be replaced, the card point 13 can be disengaged from the fixing groove 14 by pressing the rear portion of the card 12, so that the plug 2 can be rotated to be disengaged from the plug connector 8.

Further, the power plug of the present invention has two or three pins and has a different sectional shape. The above structural shape is mainly to meet the requirements of different national standards.

As shown in Fig. 4, Fig. 5 and Fig. 6, the pin of the power plug 2 is two parallel flat metal pieces, which conform to the American UL standard.

As shown in FIG. 7, FIG. 8 and FIG. 9, the pins of the power plug 2 have a certain inclination angle of two pieces. Flat metal sheet, in line with Australian SAA standards.

As shown in Fig. 10, Fig. 11 and Fig. 12, the pins of the power plug 2 are two parallel metal cylinders, which conform to the German VDE standard.

As shown in Figs. 13, 14, and 15, the pins of the power plug 2 are three three-legged rectangular-section metal cylinders, and one of the pins for grounding has a larger cross section and conforms to British standards.

Claims

Claims.

1. A switching power supply with a replaceable plug, comprising a switching power supply housing and a plug-in component, wherein the outer casing of the switching power supply housing is provided with a printed circuit board and a transformer component, and a plug for connecting a power source, wherein: The power plug is movable plug-in type, the lower end of the plug is provided with a circular plug end, and the lower part of the plug end is provided with at least two protruding clips, and the metal pins of the plug are respectively electrically connected to the bottom of the plug. Pointly, the switch power supply housing is provided with a plug interface matched with the plug, the plug interface is a circular recess matched with the power plug, and at least two recesses are provided on the sidewall of the recess The above-mentioned notch is used for inserting a card block at the lower end of the plug, and the side wall of the plug connector connected to the above-mentioned notch is provided with a circular arc-shaped sliding groove at both ends, and a plug contact is provided in the middle of the above-mentioned plug connector. The same number of contact strips correspond to the point locations.

2. The switchable power supply of the replaceable plug according to claim 1, wherein: the bottom of the plug connector is provided with a fixed card formed integrally with the power of the switching power supply, and the fixed card is passed through a U-shaped gap. The tongue-shaped piece is separated on the outer surface of the switching power supply, and the end portion is provided with a protruding card point. The corresponding position of the bottom of the power plug is provided with a concave fixing groove matched with the card point.

3. The switchable power supply of the replaceable plug according to claim 2, wherein: said card point is a ratchet.

4. The switchable power supply of the replaceable plug according to claim 1, wherein: the contact point of the lower portion of the power plug is a metal piece disposed in a lower recess of the plug, the position and the quantity of the metal piece are in contact with The sheet is corresponding, and the metal piece is electrically connected to the pin.

A switchable power supply for a replaceable plug according to any one of claims 1 to 2, wherein: said power plug has two or three pins and has a different cross-sectional shape.

6. The switchable power supply of the replaceable plug according to claim 1, wherein: the pin of the power plug is two parallel flat metal pieces, which conforms to the U.S. UL standard.

7. The switchable power supply of the replaceable plug according to any one of claims 1 or 2, wherein! ^There are: The pin of the power plug is two flat metal pieces with a certain inclination angle of 50%, which conforms to the Australian SAA standard.

8. The switchable power supply of the replaceable plug according to any one of claims 1 or 2, wherein: the pin of the power plug is two parallel metal cylinders, which conforms to the German VDE standard.

The switchable power supply of the replaceable plug according to any one of claims 1 to 2, wherein: the pin of the power plug is three three-legged rectangular-section metal cylinders, and a cross section of a pin for grounding Larger, in line with British BS standards.