WO2011150024A2

WO2011150024A2 - Plug connector

Info

Publication number: WO2011150024A2
Application number: PCT/US2011/037859
Authority: WO
Inventors: Yi-Tse Ho
Original assignee: Molex Incorporated
Priority date: 2010-05-25
Filing date: 2011-05-25
Publication date: 2011-12-01
Also published as: WO2011150024A3; TWM393846U

Abstract

A plug connector, comprising an insulative base, a first terminal set, an interconnecting terminal set, a metal housing, an insulative sliding member, and a second terminal set. The insulative base is provided with a first terminal carrying portion for carrying the first terminal set and a second terminal carrying portion disposed on the upper level of the first terminal carrying portion and for carrying the interconnecting terminal set. The metal housing is fitted over the insulative base and is provided with a frame opening disposed at the front side and an opening formed on the top side. The insulative sliding member is capable of sliding between a first position close to the frame opening and a second position far away from the frame opening inside the opening of the metal housing. The second terminal set is disposed on the insulative sliding member and can slidably contact the interconnecting terminal set. By means of the movement of the insulative sliding member, the plug connector can firmly connect with sockets having different sizes of openings.

Description

PLUG CONNECTOR

RELATED APPLICATIONS

[0001] This application claims priority to Taiwanese Application No. 99209844, filed May 25, 2010, which is incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

[0002] The present invention relates to a plug connector, and particularly to a compound plug connector capable of being plugged optionally into a compound socket or a standard socket.

DESCRIPTION OF THE RELATED ART

[0003] Currently, communications protocols for electronic information products define a variety of signal transmission standards. In order to save space taken by electrical connectors according to different signal transmission standards, compound electrical connectors have been developed.

[0004] For example, Taiwan Utility Model Publication No. M357748 (corresponding China Patent Application No. 200820138607.6; and corresponding U.S. Patent Publication No. US2009/0111330A1) discloses a compound socket connector that integrates USB 3.0 and ESATA transmission terminals, which can be inserted into by standard USB 3.0 and ESATA plug connectors, respectively.

[0005] For example, Taiwan Utility Model Publication No. M293552 (corresponding China Patent Application No. ZL200620002331.X; and corresponding U.S. Patent No. US07371116) discloses a compound socket connector that integrates USB 2.0 and ESATA transmission terminals, which can be inserted into by standard USB 2.0 and ESATA plug connectors, respectively.

[0006] For example, Taiwan Utility Model Publication No. M345394 (corresponding China Patent Application No. 200820124958.1) discloses a compound plug connector that integrates USB 3.0 and ESATA transmission terminals, which can insert into the compound socket connector disclosed by the above M357748, but is unable to insert into a standard USB 3.0 jack that is relatively small.

[0007] For example, Taiwan Utility Model Publication No. M301432 (corresponding China Patent Application No. 200620114874.0) discloses a compound plug connector that integrates USB 2.0 and ESATA transmission terminals, which can insert into the compound socket connector disclosed by the above M293552, but is unable to insert into a standard USB 2.0 jack that is relatively small.

[0008] Compound plug connectors are unable to insert into standard sockets (only compliant with a single transmission standards). To solve this problem, for example, Taiwan Utility Model Publication No. M361127 discloses a separated all-in-one connector, which can insert into an all- in-one sockets or optionally connect with a standard USB socket or ESATA socket through parallel movement of two connecting components. When connecting with a standard USB socket or ESATA socket, however, the two connecting components must be switched manually, leading to inconvenient usage. When the two connecting components are used to insert into the USB socket or ESATA socket having relatively small jacks, moreover, only one of the connecting components can be pushed out for insertion. The height of each individual connecting component is only about one half of the standard connector size, for example, the connecting component having the USB terminal is only about one half of a standard USB plug. When it is inserted into a standard USB jack, the outside profile of the connecting component is unable to fully lock into the insertion slot of the jack, which tends to wiggle or leads to insufficient contact or poor contact between terminals.

SUMMARY OF THE INVENTION

[0009] A plug connector is disclosed, comprising an insulative base, a first terminal set, an interconnecting terminal set, a metal housing, an insulative sliding member, and a second terminal set. The insulative base is provided with a first terminal carrying portion and a second terminal carrying portion disposed on the upper level of the first terminal carrying portion. The first terminal set is consisted of a plurality of terminals and disposed on the first terminal carrying portion. The interconnecting terminal set is consisted of a plurality of interconnecting terminals and disposed on the second terminal carrying portion. The metal housing is fitted over the insulative base and is provided with a frame opening disposed at the front side and an opening formed on the top side. The insulative sliding member is disposed above the second terminal carrying portion and capable of sliding between a first position relatively close to the frame opening and a second position relatively far away from the frame opening inside the opening of the metal housing. The second terminal set is consisted of a plurality of second terminals corresponding to the interconnecting terminal set, is disposed on the insulative sliding member and can slidably contact the interconnecting terminal set. The plug connector also comprises at least one spring bias member disposed between the insulative sliding member and the insulative base, which exerts a bias force on the insulative sliding member such that the insulative sliding member constantly returns to the first position.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is illustrated by way of example and not limited in the accompanying figures in which like reference numerals indicate similar elements and in which:

[0011] Fig. 1 is a perspective exploded view of a first exemplary embodiment of the plug connector ;

[0012] Fig. 2 is a partial exploded view of the first embodiment;

[0013] Fig. 3 is a partial exploded view of the first embodiment;

[0014] Fig. 4 is a perspective view of the first embodiment, wherein an insulative sliding member is located at a first position;

[0015] Fig. 5 is a perspective view of the first embodiment, wherein an insulative sliding member is located at a second position;

[0016] Fig. 6 is a top view of Fig. 4;

[0017] Fig. 7 is a sectional view taken along the line VII- VII of Fig. 6;

[0018] Fig. 8 is a sectional view taken along the line VIITVIII of Fig. 6;

[0019] Fig. 9 is a sectional view taken along the line ΓΧ-ΙΧ of Fig. 6;

[0020] Fig. 10 is a top view of Fig. 5;

[0021] Fig. 11 is a sectional view taken along the line XI-XI of Fig. 10;

[0022] Fig. 12 is a perspective view of the first embodiment and a compound socket;

[0023] Fig. 13 is a perspective view of the first embodiment and a standard socket;

[0024] Fig. 14 is a top view, illustrating the connection relationship between the first embodiment and the compound socket;

[0025] Fig. 15 is a sectional view taken along the line V-V of Fig. 13;

[0026] Fig. 16 is a top view, illustrating the connection relationship between the first embodiment and the standard socket; [0027] Fig. 17 is a sectional view taken along the line VII- VII of Fig. 16;

[0028] Fig. 18 is a perspective view of a second exemplary embodiment of the plug connector;

[0029] Fig. 19 is a perspective exploded view of Fig. 18;

[0030] Fig. 20 is a perspective view of the second embodiment, wherein an insulative shell is removed;

[0031] Fig. 21 is a top view of Fig. 20;

[0032] Fig. 22 is a sectional view taken along the line II- II of Fig. 21;

[0033] Fig. 23 is a perspective view of a third exemplary embodiment of the plug connector;

[0034] Fig. 24 is a perspective exploded view of Fig. 23;

[0035] Fig. 25 is a top view of Fig. 23; and

[0036] Fig. 26 is a sectional view taken along the line VI- VI of Fig. 25. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The above and other technical contents, features and effects will be clearly presented through the detailed description of three exemplary embodiments below with reference with the accompanying drawings. It should be noted that similar components are labeled with identical numerals in the description below. The detailed description that follows describes exemplary embodiments and is not intended to be limited to the expressly disclosed combination(s). Therefore, unless otherwise noted, features disclosed herein may be combined together to form additional combinations that were not otherwise shown for purposes of brevity.

[0038] One benefit of the present disclosure is to provide a compound plug connector for optionally inserting into a compound socket with relatively big jack or a regular standard socket with relatively small jack and capable of firmly connecting with the socket, and moreover, capable of automatically adjusting according to the sizes of different jacks for connecting with sockets. According to exemplary embodiments, the plug connector can optionally connect with an ESATA/USB compound socket connector or a USB standard socket connector, and when connecting with a standard USB socket connector, the insulative sliding member slides to the second position as acted on by the standard USB socket connector and thereby is disposed outside of the insert slot of the standard USB socket connector. When the plug connector is pulled out of the insert slot of the USB socket connector, the insulative sliding member constantly returns to the first position as biased by the spring bias member for connecting with a compound socket. Through the automatic movement of the insulative sliding member between the first position and the second position, it is convenient for use, and the size of the frame opening of the metal housing matches that of the insert slot of a standard USB socket connector, which can be firmly contained inside the insert slot to ensure the stability of terminal contact.

[0039] Refer to Figs. 1 ~ 4, a first embodiment of the plug connector 100 is used for installation on a circuit board 10, the plug connector 100 comprises an insulative base 1, a first terminal set 2, an interconnecting terminal set 3, a metal housing 4, an insulative sliding member 5, a second terminal set 6, a spring bias member 7, a metal cover body 8 and a terminal positioning member 9.

[0040] The insulative base 1 is provided with a first terminal carrying portion 11 and a second terminal carrying portion 12 disposed on the rear upper level of the first terminal carrying portion 11. The insulative base 1 is further provided with a plurality of lower terminal channels

111 disposed on the first terminal carrying portion 11, a plurality of middle terminal channels

112 disposed on the juncture of the first terminal carrying portion 11 and the second terminal carrying portion 12 and extending forward to the top surface of the first terminal carrying portion 11, and upper terminal channels 113 disposed on the top surface of the second terminal carrying portion 12.

[0041] Refer to Figs. 1, 2, 6 and 7, the first terminal set 2 is consisted of a plurality of terminals and disposed on the first terminal carrying portion 11. In the present embodiment, the first terminal set 2 is a terminal set compliant with USB 3.0 (Universal Serial Bus) signal transmission standards, comprising four lower terminals 21 and five upper terminals 22. The lower terminals 21 are correspondingly contained inside the lower terminal channels 111, respectively, comprising a fixing portion 211, a plate contact portion 212 that is formed by bending the front end of the fixing portion 211 upwardly and then backwardly and further extends out of the top surface of the first terminal carrying portion 11, and a bonding portion 213 that is formed by bending the rear end of the fixing portion 211 and extending downwardly for being welded onto the circuit board 10. The upper terminals 22 are correspondingly contained inside the middle terminal channels 112, respectively, comprising a fixing portion 221, an elastic contact portion 222 that is formed by extending forwardly from the fixing portion 221 and further out of the top surface of the first terminal carrying portion 11, and a bonding portion 223 that is formed by bending the rear end of the fixing portion 221 and extending downwardly for being welded onto the circuit board 10. The lower terminals 21 are assembled onto the insulative base 1 by entering the front end of the lower terminal channels 111 and then moving backwardly to position, while the upper terminals 22 are assembled onto the insulative base 1 by entering the rear end of the middle terminal channels 112 and then moving forwardly to position.

[0042] The interconnecting terminal set 3 is consisted of a plurality of interconnecting terminals 31 and disposed on the second terminal carrying portion 12. Each interconnecting terminal 31 is correspondingly contained inside the upper terminal channels 113, and comprises an interconnecting fixing portion 311 fixedly disposed on the second terminal carrying portion 12, a flat panel interconnecting portion 312 that is formed by extending forwardly from the interconnecting fixing portion 311 and further out of the top surface of the second terminal carrying portion 12, and a bonding portion 313 that is formed by bending the interconnecting fixing portion 311 and extending downwardly for being welded onto the circuit board 10. It is assembled onto the insulative base 1 by entering the rear end of the upper terminal channels 113, and then moving forwardly to position. The interconnecting terminal set 3 corresponds to a second terminal set 6 for interconnecting the second terminal set 6 such that the second terminal set 6 is electrically connected with the circuit board 10. The second terminal set 6 will be further described below.

[0043] The metal housing 4 is fitted over the insulative base 1, comprising a top wall 41, a bottom wall 42, and two side walls 43. The top wall 41, bottom wall 42 and two side walls 43 jointly define a frame opening 44 disposed at the front side, and the metal housing 4 is further provided with an opening 45 formed on the top side (i.e. formed on the top wall 41). The insulative base 1 is further provided with a rear stop portion 13 disposed above the rear end of the second terminal carrying portion 12 and a bottom stop portion 14 disposed under the first terminal carrying portion 11. The rear stop portion 13 is provided with a locking slot 131 for receiving the rear end of the top wall 41 of the metal housing 4, and the bottom stop portion 14 is provided with a locking slot 141 for receiving the rear end of the bottom wall 42 of the metal housing 4. Moreover, the metal housing 4 is fixed onto the insulative base 1 through the engagement between two locking holes 431 of two side walls 43 of the metal housing 4 and two projections 15 on the insulative base 1.

[0044] Refer to Figs. 1, 2, and 3, the insulative sliding member 5 is disposed above the insulative base 1, namely above the first terminal carrying portion 11 and second terminal carrying portion 12, and moreover, it is capable of sliding between a first position relatively close to the frame opening 44 (as shown in Fig. 4) and a second position relatively far away from the frame opening 44 (as shown in Fig. 5) inside the opening 45 of the metal housing 4. Refer to Figs. 3, 8 and 9, the insulative sliding member 5 is provided with a pair of sliding slots 51 disposed on two opposite sides, the pair of sliding slots 51 engage with a pair of side edges 411 that define the opening 45 in the metal housing 4, respectively, to jointly form tracks for the insulative sliding member 5 to slide. Refer to Figs. 3 and 7, the insulative sliding member 5 is further provided with a locking slot 52 that engages with a front side edge 412 defining the opening 45 in the metal housing 4. When the insulative sliding member 5 is at the first position, the locking slot 52 locks with the front side edge 412 to stop the insulative sliding member 5 and further position the insulative sliding member 5 at the first position.

[0045] Refer to Figs. 1, 2, 3, 7, 10 and 11, the second terminal set 6 is consisted of a plurality of second terminals 61 corresponding to the interconnecting terminal set 3, is disposed on the insulative sliding member 5 and can slidably contact the interconnecting terminal set 3. Each second terminal 61 comprises a fixing portion 611 fixedly disposed on the insulative sliding member 5, an elastic contact portion 612 that extends forwardly from the fixing portion 611 and forms a downward projection at the end thereof, and an elastic interconnecting portion 613 that extends backwardly from the fixing portion 611 and forms a downward projection at the end thereof. The elastic interconnecting portion 613 contacts a corresponding flat panel interconnecting portion 312. In the present embodiment, the second terminal set is a terminal set compliant with ESATA (External Serial Advanced Technology Attachment) signal transmission standards.

[0046] The spring bias member 7 is disposed between the insulative sliding member 5 and the insulative base 1, and exerts a bias force on the insulative sliding member 5 such that the insulative sliding member 5 constantly returns to the first position. In the present embodiment, the spring bias member 7 is a pair of springs 7, and the insulative sliding member 5 is further provided with two containing slots 53 for containing one end of each of the springs 7, respectively, while the insulative base 1 is further provided with two posts 16 that project forwardly from the rear stop portion 13 for the other end of each of the springs 7 to fit over. Two ends of the springs 7 are fixed through the containing slots 53 and the posts 16.

[0047] Refer to Figs. 1, 4, 6, 7, 8 and 9, the metal cover body 8 is in a reversed U shape and provided with a locking hole 81 on each of the two sides thereof for locking projection 46 of the metal housing 4, and moreover, the rear stop portion 13 of the insulative base 1 is provided with a locking slot 132 for receiving the rear end of the metal cover body 8, by which the metal cover body 8 is fixed onto the metal housing 4 and the insulative base 1, and further covers rear ends of the spring bias member 7 and the insulative sliding member 5.

[0048] Refer to Figs. 1 and 7, the terminal positioning panel 9 is assembled onto the insulative base 1 and provided with a plurality of through-holes 91 for fixing bonding portions 213, 223 and 313 of all terminals of the first terminal set 2 and the interconnecting terminal set 3.

[0049] Refer to Figs. 12 and 13, in the present embodiment, the plug connector 100 can optionally connect with an ES ATA/USB compound socket 200 or a USB 3.0 standard socket 300. The insert slot 201 of the compound socket 200 has a bigger height than that of the insert slot 301 of the standard socket 300.

[0050] Refer to Figs. 12, 14 and 15, when the plug connector 100 connects with the compound socket 200, the insert slot 201 of the compound socket 200 can hold the frame opening 44 of the metal housing 4 and the front side portion of the insulative sliding member 5, and the insulative sliding member 5 is further provided with two slots 54 for correspondingly holding two clamping elastic arms 202 of the compound socket 200 so as to prevent the clamping elastic arms 202 from pushing the insulative sliding member 5, such that the insulative sliding member 5 is at the first position and can enter the insert slot 201. Thereby, the elastic contact portions 612 of the second terminals 61 disposed on the insulative sliding member 5 contact the ESATA terminals 204 on the tongue panel 203 of the compound socket 200 to establish electrical connection, and moreover, the plate contact portions 212 of the lower terminals 21 of the first terminal set 2 contact the USB 3.0 elastic terminals 205 disposed under the tongue panel 203 to establish electrical connection, and the elastic contact portions 222 of the upper terminals 22 contact the USB 3.0 plate terminals 206 disposed under the tongue panel 203 to establish electrical connection.

[0051] Refer to Figs. 13, 16 and 17, since the insert slot 301 of the standard socket 300 has a relatively small height, the insert slot 301 only has a space for containing the frame opening 44 of the metal housing 4. When the plug connector 100 connects with the standard socket 300, the shell 302 above the insert slot 301 of the standard socket 300 will stop the insulative sliding member 5 from entering the insert slot 301, and at the same time, keeps the second terminal set 6 on the insulative sliding member 5 out of the insert slot 301, and only the lower terminals 21 and the upper terminals 22 of the first terminal set 2 contact corresponding elastic terminals 303 and plate terminals 304 in the socket 300 to establish electrical connection. When the frame opening 44 moves forwardly to enter the insert slot 301, moreover, the insulative sliding member 5 is resisted by the shell 302 and retreats relatively to the second position, and presses the spring bias member 7 such that the spring bias member 7 accumulates a restoring force. When the plug connector 100 is pulled out of the insert slot 301, the insulative sliding member 5 automatically returns to the first position through the restoring force provided by the spring bias member 7 for connecting with the compound socket 200. Therefore, it is easy to operate and use. Since the frame opening 44 of the plug connector 100 has a matching size with the insert slot 301 of the standard socket 300, it can be firmly contained inside the insert slot 301 without wiggling, thereby ensuring the stability of terminal contact.

[0052] Refer to Figs. 18-22, a second embodiment of the plug connector 100' is used for electrically connecting with a cable (comprising a plurality of wires 20). The second embodiment is substantially the same as the first embodiment; however, corresponding adjustments are made for connection with a cable. Relative to the first embodiment, terminals of the first terminal set 2' and interconnecting terminal set 3' in the second embodiment do not have a bonding portion bent downwardly but are directly welded to each wire 20 of the cable. Therefore, there is no need for a terminal positioning member. The insulative base does not have a bottom stop portion, and the bottom wall 42' of the metal housing 4' is relatively short, such that the bottom surface of the rear end of the first terminal set 2' is exposed for welding with the wires 20. Moreover, the plug connector 100' is further provided with an insulative shell 50 disposed at the utmost outside layer for covering the connection with the cable so as to enhance the bonding force between the plug connector 100' and the cable. The insulative shell 50 is formed through insert molding. Therefore, plugs 30 are used to close the rear end of the middle terminal channels 112' and plugs 40 are used to close the rear end of the upper terminal channels 113', so as to prevent plastics from flowing into the terminal channels 112' and 113' when the insulative shell 50 is fabricated.

[0053] Refer to Figs. 23 ~ 26, the third embodiment of the plug connector 100" is substantially the same as the first embodiment; however, in the third embodiment, the first terminal set 2" is a terminal set compliant with USB 2.0 Type A signal transmission standards. Relative to the first embodiment, the first terminal set 2" in the present embodiment comprises only four plate terminals 2", is disposed on the top surface of the first terminal carrying portion 11" of the insulative base 1", and is contained inside corresponding terminal channels 112".

[0054] The plug connector 100" can optionally connect with an ESATA/USB compound socket 200 or a USB 2.0 Type A standard socket (not shown), and the insert slot of the USB 2.0 Type A standard socket has the same size as that of the USB 3.0 standard socket 300. When the plug connector 100" connects with a USB 2.0 Type A standard socket, therefore, the insulative sliding member 5 is similarly stopped outside of the insert slot. The action mechanism thereof is the same as that in the first embodiment, which will not be repeated here.

[0055] The third embodiment can also be adjusted for a connection with a cable as in the second embodiment to form a cable plug.

[0056] In summary, embodiments of plug connectors 100, 100' and 100" can optionally connect with an ESATA/USB compound socket 200 having a relatively large insert slot 201 or a USB (2.0 or 3.0) standard socket 300 (USB 3.0 shown in the figures) having a relatively small insert slot 301. Through the automatic movement of the insulative sliding member 5 between the first position and the second position and through its constant returning to the first position as biased by the spring bias member 7, it is convenient for use, and moreover, when plug connectors 100, 100' and 100" connect with a standard socket 300, they can be firmly contained inside the insert slot 301 since the size of the frame opening 44 matches that of the insert slot 301, thereby helping ensure the stability of terminal contact.

[0057] As can be appreciated, only exemplary embodiments are described above, which are not intended to limit the scope of the present invention. Numerous other embodiments, modifications and variations within the scope and spirit of the appended claims will occur to persons of ordinary skill in the art from a review of this disclosure.

Claims

1. A plug connector, comprising:

an insulative base, provided with a first terminal carrying portion and a second terminal carrying portion disposed on the upper level of the first terminal carrying portion;

a first terminal set, consisted of a plurality of terminals and disposed on the first terminal carrying portion;

an interconnecting terminal set, consisted of a plurality of interconnecting terminals and disposed on the second terminal carrying portion;

a metal housing, fitted over the insulative base and provided with a frame opening disposed at the front side and an opening formed on the top side;

an insulative sliding member, disposed above the insulative base and capable of sliding between a first position relatively close to the frame opening and a second position relatively far away from the frame opening inside the opening of the metal housing; and

a second terminal set, consisted of a plurality of second terminals corresponding to the interconnecting terminal set, disposed on the insulative sliding member and capable of slidably contacting the interconnecting terminal set.

2. The plug connector as set forth in Claim 1, further comprising at least one spring bias member disposed between the insulative sliding member and the insulative base, which exerts a bias force on the insulative sliding member such that the insulative sliding member constantly returns to the first position.

3. The plug connector as set forth in Claim 2, wherein the insulative sliding member is provided with a pair of sliding slots disposed on two opposite sides, the pair of sliding slots engage with a pair of side edges that define the opening in the metal housing, respectively, to jointly form tracks for the insulative sliding member to slide.

4. The plug connector as set forth in Claim 3, wherein each of the second terminals comprises a fixing portion fixedly disposed on the insulative sliding member, an elastic contact portion that extends forwardly from the fixing portion and forms a downward projection at the end thereof, and an elastic interconnecting portion that extends backwardly from the fixing portion and forms a downward projection at the end thereof; each of the interconnecting terminals comprises an interconnecting fixing portion fixedly disposed on the second terminal carrying portion, and a flat panel interconnecting portion that is formed by extending forwardly from the interconnecting fixing portion and further out of the top surface of the second terminal carrying portion, the flat panel interconnecting portion contacting the corresponding elastic interconnecting portion.

5. The plug connector as set forth in Claim 4, wherein the insulative sliding member is further provided with a locking slot that engages with a front side edge defining the opening in the metal housing, such that when the insulative sliding member is at the first position, the locking slot locks with the front side edge.

6. The plug connector as set forth in Claim 5, wherein the insulative base is further provided with a rear stop portion disposed above the rear end of the second terminal carrying portion, and the spring bias member is disposed between the rear stop portion and the insulative sliding member; the plug connector is further provided with a metal cover body that covers rear ends of the spring bias member and the insulative sliding member.

7. The plug connector as set forth in Claim 6, wherein the spring bias member is a pair of springs, and the insulative sliding member is further provided with two containing slots for containing one end of each of the springs, respectively, while the insulative base is further provided with two posts that project forwardly from the rear stop portion for the other end of each of the springs to fit over.

8. The plug connector as set forth in Claim 7, wherein the first terminal set is a terminal set compliant with USB signal transmission standards, and the second terminal set is a terminal set compliant with ESATA signal transmission standards.

9. The plug connector as set forth in Claim 8, wherein the first terminal set is a terminal set compliant with USB 3.0 signal transmission standards.

10. The plug connector as set forth in Claim 8, wherein the first terminal set is a terminal set compliant with USB 2.0 Type A signal transmission standards.

11. The plug connector as set forth in Claim 8, which is installed on a circuit board for connecting with an ESAT A/USB compound socket connector or a USB standard socket connector; and when connecting with a standard USB socket connector, the insulative sliding member slides to the second position as acted on by the standard USB socket connector and thereby is disposed outside of the insert slot of the standard USB socket connector.

12. The plug connector as set forth in Claim 8, which is further provided with an insulative shell disposed at the utmost outside layer and connects with a cable electrically for connecting with an ESATA/USB compound socket connector or a USB standard socket connector; and when connecting with a standard USB socket connector, the insulative sliding member slides to the second position as acted on by the standard USB socket connector and thereby is disposed outside of the insert slot of the standard USB socket connector.