Double-sided electrical connector

Abstract

The present application provides a positive and negative double-sided electrical connection structure which can be connected to a pair of electrical connectors in positive and negative double-sided mode, comprising: a connection structure provided with a connection slot, the front end of the connection slot being an insertion opening and provided with a top surface and a bottom surface, each of the top surface and the bottom surface being provided with a connection interface, each of the two connection interfaces being provided with a row of contact points, each of the two rows of contact points being provided with a plurality of contact points of different signals, the two rows of contact points being formed on two rows of terminals, the shape of the connection slot can be positioned in a connection part of the electrical connector in positive and negative double-sided mode; characterized in that a rear segment of the top surface is convex to the center height of the connection slot than a front segment, a rear segment of the bottom surface is convex to the center height of the connection slot than a front segment, the connection part is a connection plate, each of the upper and lower plate surfaces of the connection plate is provided with a connection interface.

Description

[0001] This application is a divisional application of the invention patent application filed on August 30, 2011, with application number 2021 / 11051380.8 and invention title "Double-sided Electrical Connection Structure". Technical Field

[0002] This invention relates to an electrical connector, and more particularly to a double-sided electrical connector. Background Technology

[0003] The most widely used signal transmission standard for computer devices today is Universal Serial Bus (USB). Connectors and cables made with this standard allow peripheral devices connected to the computer, such as mice, keyboards, and USB flash drives, to be detected and used immediately by the computer.

[0004] Currently, both USB female sockets and USB connectors are unidirectional electrical connections. To ensure electrical connection when the USB connector is inserted into the USB female socket, both have a foolproof design. That is, if the USB connector is inserted in the wrong direction, it cannot be inserted. The user will then try to insert it in the other direction. Only when the direction is correct can it be inserted. This ensures that electrical connection is established after insertion.

[0005] Currently, USB has two specifications: 2.0 and 3.0. Please refer to [link / reference]. Figure 1 and Figure 2 The disk 1 is a USB 2.0 standard disk with a board-type connector. It has a plastic base 10 and a circuit board 15. The rear part of the circuit board 15 is covered by the plastic base 10, and only one side of the front part of the circuit board 15 is exposed outside the plastic base 10. The side of the circuit board 15 has a row of four contacts 16.

[0006] Please see Figure 3 This is an existing USB 2.0 standard electrical connector 20, which has a metal shell 25 and a tongue 22. A connection groove 21 is formed inside the metal shell 25. The tongue 22 is located slightly above the connection groove. The tongue has a row of 4 contact points 23 only on its bottom. Two spring tabs 24 are stamped out on the top and bottom surfaces of the metal shell 25.

[0007] Please see Figure 4 In use, the flash drive 1 must be inserted into the connection slot 21 with the contact 16 facing upwards in order to make an electrical connection with one of the row of contacts 23 located below the tongue 22. The four spring contacts 24 are pressed against the flash drive 1. If the flash drive 1 is inserted into the connection slot 21 with the reverse side facing up, it cannot make an electrical connection. Users usually insert it randomly, so the probability of it not being inserted is 1 / 2. Therefore, it is often inserted twice, which causes inconvenience in use.

[0008] For ease of use, a bidirectional electrical connection is still needed to meet the requirements. Therefore, the applicant developed an electronic device with a bidirectional connector that has a double-sided electrical connection function. In order to accommodate the double-sided electrical connection function, the connector must be designed with two rows of contacts. However, in use, there is a risk that the spring 24 of the electrical connection female may abut against the contacts on the other side of the board, causing a short circuit. Therefore, this problem also needs to be overcome.

[0009] The applicant of this invention has devoted himself to studying the double-sided plug design of the above-mentioned product and finally proposed an improved product structure to overcome the above-mentioned potential problems.

[0010] The relevant prior art for this invention includes: Chinese Patent CN2791923Y, Chinese Patent CN201349062Y, Chinese Patent CN101888030A, Chinese Patent CN201708399U, Chinese Patent CN101677168A, Chinese Patent CN101091292A, Chinese Patent CN2279705Y, Chinese Patent CN2459772Y, Taiwan Patent TW201104963A, Chinese Patent CN2773927Y, Chinese Patent CN201213174Y, Taiwan Patent TWM268764U, Taiwan Patent TWM329900U, Taiwan Patent TW201112504A, and Chinese Patent CN20 1608396U, Chinese Patent CN201478491U, Chinese Patent CN101859936A, Chinese Patent CN201478488U, Chinese Patent 201440469U, Chinese Patent CN101882716A, Chinese Patent CN201282232Y, Chinese Patent 201478499U, Chinese Patent CN201498787U, Chinese Patent CN201682069U, Chinese Patent CN1830122A, Chinese Patent CN2733636Y, Chinese Patent CN101483973A, Chinese Patent CN103140955A, Chinese Patent CN2791923Y, Chinese Patent CN201749681 U, Chinese Patent CN2728025Y, Chinese Patent CN2884567Y, Chinese Patent CN2616942Y, Chinese Patent CN201160164Y, Chinese Patent CN201478488U, Chinese Patent CN201336412Y, Chinese Patent CN201682069U. Summary of the Invention

[0011] The main objective of this invention is to provide a double-sided electrical connection structure, wherein both the upper and lower plates of the mating structure have contact points, achieving convenience and versatility in use.

[0012] To achieve the above objectives, the present invention provides a reversible double-sided electrical connection structure, which is capable of reversible double-sided contact with a mating electrical connector. It includes: a mating structure having a connection groove, the front end of which is an insertion port and has a top surface and a bottom surface; each of the top and bottom surfaces has a connection interface; each connection interface has a row of contacts; each row of contacts has multiple contacts for different signal circuits; the two rows of contacts are formed on two rows of terminals; the shape of the connection groove allows for reversible double-sided contact and positioning on a mating portion of the mating electrical connector; characterized in that a rear section of the top surface protrudes towards the center height of the connection groove compared to a front section, and a rear section of the bottom surface protrudes towards the center height of the connection groove compared to a front section; the mating portion is a connection plate, and each of the upper and lower surfaces of the connection plate has a connection interface.

[0013] With the above structure, the present invention can achieve convenience and versatility in use.

[0014] The above and other objects, advantages and features of the present invention will become more apparent from the following detailed description of preferred embodiments and with reference to the drawings. Attached Figure Description

[0015] Figure 1 It is a 3D image of a familiar USB flash drive.

[0016] Figure 2 This is a front cross-sectional view of a commonly known USB flash drive.

[0017] Figure 3 This is a front view of a conventional electrical connection female connector.

[0018] Figure 4 This is a front view of the familiar USB flash drive insertion into the electrical connection socket.

[0019] Figure 5 This is an exploded perspective view of the first embodiment of the present invention.

[0020] Figure 6 This is a three-dimensional composite diagram of the first embodiment of the present invention.

[0021] Figure 7 This is a front cross-sectional view of the first embodiment of the present invention.

[0022] Figure 8 This is a schematic diagram of the two rows of first contacts connected in series according to the first embodiment of the present invention.

[0023] Figure 9 This is a usage state diagram of the first embodiment of the present invention.

[0024] Figure 10 This is a three-dimensional composite diagram of the second embodiment of the present invention.

[0025] Figure 11 This is a front cross-sectional view of the second embodiment of the present invention.

[0026] Figure 12 This is a three-dimensional composite diagram of the third embodiment of the present invention.

[0027] Figure 13 This is a schematic diagram of the first contact point of two rows connected in series according to the third embodiment of the present invention.

[0028] Figure 14 This is a side cross-sectional view of the fourth embodiment of the present invention.

[0029] Figure 15 This is a front view of the fourth embodiment of the present invention.

[0030] Figure 16 This is a three-dimensional composite diagram of the fifth embodiment of the present invention.

[0031] Figure 17 This is an exploded perspective view of the sixth embodiment of the present invention.

[0032] Figure 18 This is a three-dimensional composite diagram of the sixth embodiment of the present invention.

[0033] Figure 19 This is a three-dimensional composite diagram of the seventh embodiment of the present invention.

[0034] Figure 20 This is a three-dimensional composite view of the front of the eighth embodiment of the present invention.

[0035] Figure 21 This is a three-dimensional composite view of the reverse side of the eighth embodiment of the present invention.

[0036] Figure 22 This is a side cross-sectional view of the ninth embodiment of the present invention.

[0037] Figure 23 This is a side cross-sectional view of the tenth embodiment of the present invention.

[0038] Figure 24 This is a side cross-sectional view of the eleventh embodiment of the present invention.

[0039] Figure 25 This is a three-dimensional composite diagram of the twelfth embodiment of the present invention.

[0040] Figure 26 This is a front cross-sectional view of the twelfth embodiment of the present invention.

[0041] Figure 27 This is a side cross-sectional view of the twelfth embodiment of the present invention.

[0042] Figure 28 This is a schematic diagram of the switching device and control circuit according to the twelfth embodiment of the present invention.

[0043] Figure 29This is a schematic diagram of the switching device and control circuit according to the twelfth embodiment of the present invention.

[0044] Figure 30 This is a schematic diagram of the switching device and control circuit according to the twelfth embodiment of the present invention.

[0045] Figure 31 This is a schematic diagram of the switching device and control circuit according to the thirteenth embodiment of the present invention.

[0046] Figure 32 This is a schematic diagram of the switching device and control circuit according to the fourteenth embodiment of the present invention.

[0047] Figure 33 This is a front plan view of the fifteenth embodiment of the present invention.

[0048] Figure 34 This is a reverse plan view of the fifteenth embodiment of the present invention.

[0049] Figure 35 This is a front cross-sectional view of the sixteenth embodiment of the present invention.

[0050] Figure 36 This is a front plan view of the seventeenth embodiment of the present invention.

[0051] Figure 37 This is a reverse plan view of the seventeenth embodiment of the present invention.

[0052] Figure 38 This is a top view of the eighteenth embodiment of the present invention.

[0053] Figure 39 This is a side cross-sectional view of the eighteenth embodiment of the present invention.

[0054] Figure 39A This is a front cross-sectional view of the eighteenth embodiment of the present invention.

[0055] Figure 40 This is a three-dimensional composite diagram of the nineteenth embodiment of the present invention.

[0056] Figure 41 This is a side cross-sectional view of the nineteenth embodiment of the present invention.

[0057] Figure 42 This is a side cross-sectional view of the twentieth embodiment of the present invention.

[0058] Figure 43 This is a side cross-sectional view of the twenty-first embodiment of the present invention.

[0059] Figure 44 This is a front cross-sectional view of the twenty-first embodiment of the present invention.

[0060] Figure 45This is a side cross-sectional view of the twenty-second embodiment of the present invention.

[0061] Figure 46 This is a front view of the twenty-second embodiment of the present invention.

[0062] Figure 47 This is a side cross-sectional view of the twenty-third embodiment of the present invention.

[0063] Figure 48 This is a perspective view of the connecting plate according to the twenty-third embodiment of the present invention.

[0064] Figure 49 This is a three-dimensional assembly diagram of the twenty-fourth embodiment of the present invention.

[0065] Figure 50 This is a three-dimensional assembly diagram of the twenty-fifth embodiment of the present invention.

[0066] Figure 51 This is a three-dimensional assembly diagram of the twenty-sixth embodiment of the present invention.

[0067] Figure 52 This is a side cross-sectional view of the twenty-seventh embodiment of the present invention.

[0068] Figure 53 This is a side cross-sectional view of the twenty-eighth embodiment of the present invention.

[0069] Figure 54 This is a side cross-sectional view of the twenty-ninth embodiment of the present invention.

[0070] Figure 55 This is a side cross-sectional view of the thirtieth embodiment of the present invention.

[0071] Figure 56 This is a three-dimensional composite diagram of the thirty-first embodiment of the present invention.

[0072] Figure 57 This is a front cross-sectional view of the thirty-first embodiment of the present invention.

[0073] Figure 58 This is a three-dimensional assembly diagram of the thirty-second embodiment of the present invention.

[0074] Figure 59 This is a three-dimensional composite diagram of the thirty-third embodiment of the present invention.

[0075] Figure 60 This is a top view of the thirty-fourth embodiment of the present invention.

[0076] Figure 61 This is a side cross-sectional view of the thirty-fourth embodiment of the present invention.

[0077] Figure 62 This is a front cross-sectional view of the thirty-fourth embodiment of the present invention.

[0078] Figure 63 This is a perspective view of the thirty-fourth embodiment of the present invention.

[0079] Figure 63A This is another perspective view of the thirty-fourth embodiment of the present invention.

[0080] Figure 64 This is a perspective view of the thirty-fifth embodiment of the present invention.

[0081] Figure 65 This is a side cross-sectional view of the thirty-sixth embodiment of the present invention.

[0082] Figure 66 This is a side cross-sectional view of the thirty-seventh embodiment of the present invention.

[0083] Figure 67 This is a side cross-sectional view of the thirty-eighth embodiment of the present invention.

[0084] Figure 68 This is a front cross-sectional view of the thirty-eighth embodiment of the present invention.

[0085] Figure 69 This is a top view of the thirty-ninth embodiment of the present invention.

[0086] Figure 70 This is a side cross-sectional view of the thirty-ninth embodiment of the present invention.

[0087] Figure 71 This is a front cross-sectional view of the thirty-ninth embodiment of the present invention.

[0088] Figure 72 This is a top view of the fortieth embodiment of the present invention.

[0089] Figure 73 This is a side cross-sectional view of the fortieth embodiment of the present invention.

[0090] Figure 74 This is a front cross-sectional view of the fortieth embodiment of the present invention.

[0091] Figure 75 This is a top view of the forty-first embodiment of the present invention.

[0092] Figure 76 This is a side cross-sectional view of the forty-first embodiment of the present invention.

[0093] Figure 77 This is a front view of the forty-first embodiment of the present invention.

[0094] Figure 78 This is a side cross-sectional view of the forty-second embodiment of the present invention.

[0095] Figure 79 This is a side cross-sectional view of the forty-third embodiment of the present invention.

[0096] Figure 80 This is a side cross-sectional view of the forty-fourth embodiment of the present invention.

[0097] Figure 81 This is a top view of the forty-fifth embodiment of the present invention.

[0098] Figure 82 This is a side cross-sectional view of the forty-fifth embodiment of the present invention.

[0099] Figure 83 This is a front cross-sectional view of the forty-fifth embodiment of the present invention.

[0100] Figure 84 This is a perspective view of the forty-sixth embodiment of the present invention (with the outer cover removed).

[0101] Figure 85 This is a perspective view of the forty-sixth embodiment of the present invention.

[0102] Figure 86 This is a side cross-sectional view of the forty-seventh embodiment of the present invention.

[0103] Figure 87 This is a perspective view of the forty-eighth embodiment of the present invention.

[0104] Figure 88 This is a side cross-sectional view of the forty-eighth embodiment of the present invention.

[0105] Figure 89 This is a side cross-sectional view of the forty-ninth embodiment of the present invention.

[0106] Figure 90 This is a rear cross-sectional view of the forty-ninth embodiment of the present invention.

[0107] Figure 91 This is a rear view of the fiftieth embodiment of the present invention.

[0108] Figure 92 This is a rear view of the fifty-first embodiment of the present invention.

[0109] Figure 93 This is a rear view of the fifty-second embodiment of the present invention.

[0110] Figure 94 This is a side cross-sectional view of the fifty-third embodiment of the present invention.

[0111] Figure 95 This is a rear view of the fifty-third embodiment of the present invention.

[0112] Figure 96 This is a side cross-sectional view of the fifty-fourth embodiment of the present invention.

[0113] Figure 97This is a rear view of the fifty-fourth embodiment of the present invention.

[0114] Figure 98 This is a side cross-sectional view of the fifty-fifth embodiment of the present invention.

[0115] Figure 99 This is a rear view of the fifty-fifth embodiment of the present invention.

[0116] Figure 100 This is a rear view of the fifty-sixth embodiment of the present invention.

[0117] Figure 101 This is a rear view of the fifty-seventh embodiment of the present invention.

[0118] Figure 102 This is a rear view of the fifty-eighth embodiment of the present invention.

[0119] Figure 103 This is a rear view of the fifty-ninth embodiment of the present invention.

[0120] Figure 104 This is a side cross-sectional view of the sixtieth embodiment of the present invention.

[0121] Figure 105 This is a front cross-sectional view of the sixtieth embodiment of the present invention.

[0122] Figure 106 This is a three-dimensional assembly diagram of the sixtieth embodiment of the present invention.

[0123] Figure 107 This is a bottom perspective view of the sixtieth embodiment of the present invention.

[0124] Figure 108 This is a three-dimensional composite diagram of the sixty-first embodiment of the present invention.

[0125] Figure 109 This is a three-dimensional composite diagram of the sixty-second embodiment of the present invention.

[0126] Figure 110 This is an exploded perspective view of the sixty-third embodiment of the present invention.

[0127] Figure 111 This is an exploded perspective view of the front view of the sixty-fourth embodiment of the present invention.

[0128] Figure 112 This is an exploded perspective view of the reverse side of the sixty-fourth embodiment of the present invention.

[0129] Figure 113 This is an exploded perspective view of the front after sealing according to the sixty-fourth embodiment of the present invention.

[0130] Figure 114 This is a three-dimensional composite view of the front after sealing according to the sixty-fourth embodiment of the present invention.

[0131] Figure 115 This is an exploded perspective view of the front after sealing according to the sixty-fifth embodiment of the present invention.

[0132] Figure 116 This is a three-dimensional composite view of the front after sealing according to the sixty-fifth embodiment of the present invention. Detailed Implementation

[0133] Please see Figure 5 , Figure 6 ,and Figure 7 This is the first embodiment of the present invention, which is a USB 2.0 flash drive that can be electrically connected to an electrical connector on both sides. It includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, and a limiting structure 50, wherein:

[0134] The outer cover 30 is made of plastic and has a lower seat 31 and an upper cover 32. The lower seat 31 has a chamber 33.

[0135] The circuit board 40 is placed within the chamber 33 of the outer cover 30. The rear section of the circuit board 40 is covered by the outer cover 30, while the front section of the circuit board 40 protrudes outside the outer cover 30, forming the connecting plate 55. Therefore, the connecting plate 55 directly contacts and is fixed to the outer cover 30. Each of the two surfaces (upper and lower surfaces) of the connecting plate 55 has a row of first contacts 41. These two rows of first contacts 41 are circuit contacts formed on the circuit board 40. Each row of first contacts 41 has four contacts, which can respectively transmit 1. VCC (power), 2. USB D- (signal), 3. USB D+ (signal), and 4. GND (ground). The two rows of first contacts 41 have the same connection interface, and their circuit numbers are arranged in reverse order. Figure 7 As shown, the circuit numbers of the first contacts 41 on the upper surface of the connecting plate 55, from right to left, are a1, a2, a3, a4; and the circuit numbers of the first contacts 41 on the lower surface of the connecting plate 55, from right to left, are b4, b3, b2, b1. Furthermore, the connecting plate 55 is symmetrical in both directions, thus it can be positioned on an electrical connection socket with both sides facing each other.

[0136] The outer cover 30 and the connecting plate 55 are combined to form a mating structure. The second to sixty-fifth embodiments described below all involve the outer cover 30 and the connecting plate 55 being combined to form a mating structure, that is, the connecting plate 55 is part of the mating structure.

[0137] Please see Figure 8The two first contacts 41 of the same circuit number are electrically connected in series to form a group, namely a1 and b1 are electrically connected, a2 and b2 are electrically connected, a3 and b3 are electrically connected, and a4 and b4 are electrically connected. Among them, a1 and b1 are power supply contacts and must not be short-circuited. Therefore, a1 and b1 are first connected to each other through a Schottky diode 46. The main function of the Schottky diode 46 is to prevent current reverse flow, thus achieving the effect of preventing short circuit.

[0138] The above-mentioned use of Schottky diodes for short-circuit protection is one method of electronic reverse current protection or short-circuit protection for circuit safety. However, there are many other methods, such as setting up reverse current protection electronic components, short-circuit protection electronic components, circuit safety protection components, or safety circuit settings, to achieve the effect of circuit safety protection.

[0139] The electronic unit 4 is a storage unit that is electrically connected to the circuit board 40 and is covered by the outer cover 30. It includes a memory 43 and a control circuit 45. The memory 43 may be, but is not limited to, flash memory or read-only memory (ROM). The capacity of the memory 43 is not limited. The control circuit 45 controls the operation of the memory 43 of the electronic unit. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0140] The limiting structure 50 is integrally formed with the outer cover 30. The limiting structure 50 forms four front-to-back ribs on the two surfaces of the connecting plate 55. The limiting structure 50 protrudes from the first contact point 41 on the two surfaces of the connecting plate 55 to protect the two rows of first contact points 41 and prevent short circuits. The connecting plate 55 is provided with two through holes 42 to cooperate with the two ribs in the middle of the limiting structure 50.

[0141] Please see Figure 9 With the above structure, when the flash drive 3 of this embodiment is inserted into an electrical connector 20, the shape of the connecting plate allows it to be positioned in both directions on the electrical connector 20. Furthermore, the two surfaces of the connecting plate have the same connection interface and two rows of first contacts 41 with their circuit numbers arranged in opposite directions. Therefore, the user can insert the flash drive 3 into the connecting slot 21 of the electrical connector 20 from either side for positioning and electrical connection. As shown in the figure, when a row of first contacts a1, a2, a3, and a4 are electrically connected to a row of contacts 23 of the electrical connector 20, the spring contact 24 of the electrical connector 20 abuts against the limiting structure 50 on the other surface, preventing it from touching the first contacts b1 and b4 and causing a short circuit. Moreover, since the first contact b1 is electrically connected to the Schottky diode 46, current will not flow backward to the first contact b1, thus further ensuring that the power contact, i.e., the first contact b1, will not be short-circuited.

[0142] In addition, this embodiment may include a control means combined with the USB 2.0 flash drive to perform a data storage and control program on the storage unit.

[0143] In the above embodiment, the outer cover 30 is a plastic shell. The electronic unit 4 is soldered to the circuit board. The outer cover 30 covers the circuit board 40 and the electronic unit 4. However, in order to make the overall flash drive thinner and lighter, the memory and control circuit of the electronic unit 4 can also be packaged on the circuit board 40 using a chip-on-board (COB) method. In this way, the electronic unit 4 is also electrically connected to the circuit board and is packaged by an outer cover. The COB method is still within the scope of this invention.

[0144] Please see Figure 10 and Figure 11 This is the second embodiment of the present invention, which is largely the same as the first embodiment. The difference is that the limiting structure 50 in this embodiment is a metal layer, which is electroplated on both sides of the two plates of the connecting plate 55.

[0145] Please see Figure 12 and Figure 13 This is the third embodiment of the present invention, which is largely the same as the second embodiment. The difference is that the two surfaces of the connecting plate 55 in this embodiment are not equipped with any limiting structure. In order to ensure that there is no short circuit, a row of first contacts a1, a2, a3, a4 and a row of first contacts b1, b2, b3, b4 are each electrically connected to a Schottky diode 46 to prevent current reverse flow and achieve the effect of preventing short circuit.

[0146] Please see Figure 14 and Figure 15 This is the fourth embodiment of the present invention, which is largely the same as the first embodiment. This embodiment also includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit, and a limiting structure 50. The difference lies in that the connecting plate 55 is integrally formed with the outer cover 30 and has a row of four first terminals 60 and a detection structure 80. Each first terminal 60 has first contacts 62 and 63 respectively flatly attached to the two surfaces of the connecting plate 55. The detection structure 80 is fixed to the outer cover 30 and has two movable terminals 81 and 82 and a fixed terminal 83. The two movable terminals 81 and 82 are located above and below the fixed terminal 83 and each has a protrusion 85 protruding from it. The upper and lower surfaces of the connecting plate 55 are as follows: When the front of the flash drive in this embodiment is inserted into the electrical connection socket, if the first contact 62 of the row is electrically connected to the electrical connection socket, the movable terminal 81 is pressed and conducts through the fixed terminal 83 to complete the detection. In this way, the control circuit knows that the first contact 62 of the row is electrically connected and uses the corresponding circuit signal transmission. Conversely, when the back of the flash drive is inserted into the electrical connection socket, if the first contact 63 of the row is electrically connected to the electrical connection socket, the movable terminal 82 is pressed and conducts through the fixed terminal 83 to complete the detection. In this way, the control circuit knows that the first contact 63 of the row is electrically connected and can perform the opposite circuit signal transmission.

[0147] Please see Figure 16 This is the fifth embodiment of the present invention, which is a USB 3.0 flash drive. It is largely the same as the first embodiment. This embodiment also has an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit, and a limiting structure 50. The difference is that this embodiment adds two rows of five second terminals 70. Each second terminal 70 has a spring-loaded extension 71. One end of the extension 71 extends to the connecting plate 55 and has a protruding second contact 72. The other end of the extension has a pin soldered to the circuit board 40 and electrically connected to the electronic unit. The two rows of second contacts 72 protrude from the two surfaces of the connecting plate 55 and are located after the two rows of first contacts 41. The second contacts 72 can bounce up and down with the extension 71.

[0148] Please see Figure 17 and Figure 18 This is the sixth embodiment of the present invention, which is a USB 3.0 flash drive that can be electrically connected to an electrical connector on both sides. It includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, two rows of first terminals 60, and two rows of second terminals 70, wherein:

[0149] The outer cover 30 is made of plastic and has a lower seat 31 and an upper cover 32. The lower seat 31 has a chamber 33.

[0150] The circuit board 40 is placed in the chamber 33 of the outer cover 30, and the circuit board 40 is covered by the outer cover 30.

[0151] The connecting plate 55 is integrally formed on the front end of the outer cover 30. The shape of the connecting plate 55 can be positioned on both sides of the electrical connection socket. The upper and lower surfaces of the connecting plate 55 are provided with a row of four concave surfaces 57, and a row of five through holes 56 are provided after the concave surfaces 57.

[0152] The electronic unit 4 is a storage unit that is electrically connected to the circuit board 40 and is covered by the outer cover 30. It includes a memory 43 and a control circuit 45. The capacity of the memory 43 is unlimited, and the control circuit 45 controls the operation of the memory 43 of the electronic unit.

[0153] Each of the two rows of first terminals 60 consists of four terminals. Each first terminal 60 has a non-movable extension 61. One end of the extension 61 extends to the connecting plate 55 and has a first contact 62 that is flat against the concave surface 57. The first contact 62 is a flat contact. The two sides of the two rows of first contacts 62 are longer. The two rows of first contacts 62 are only flat against the front sections of the upper and lower surfaces of the connecting plate 55. The other end of the extension 61 has a pin that is soldered to the circuit board 40 and electrically connected to the electronic unit 4. The two rows of first contacts 62 are respectively flat against the concave surfaces 57 of the two surfaces of the connecting plate 55.

[0154] Each of the two rows of second terminals 70 consists of five terminals. Each second terminal 70 is provided with a spring-loaded extension 71. One end of the extension extends to the connecting plate 55 and is provided with a protruding second contact 72. The other end of the extension is provided with a pin that is soldered to the circuit board 40 and electrically connected to the electronic unit 4. The two rows of second contacts 72 protrude from the two surfaces of the connecting plate 55 and are located after the two rows of first contacts 62. The second contacts 72 can spring up and down with the extension 71.

[0155] According to the USB Association specification, the USB 3.0 interface has four first contacts in the front row, namely 1. VBUS (power), 2. USB D- (signal), 3. USB D+ (signal) and 4. GND (ground), and five second contacts in the back row, namely 5. RX- (signal), 6. RX+ (signal), 7. GND (ground), 8. TX- (signal) and 9. TX+ (signal), etc. This is a supplementary description of the USB Association specification.

[0156] In this embodiment, the first contact 62 and the second contact 72 of the second row are the same connection interface and the circuit numbers are arranged in reverse order. Among them, a7 and b7 are circuits with the same signal and are aligned vertically. Although this embodiment does not have a limit structure, it can be used as one way to set up electronic anti-reverse current or anti-short circuit circuit safety protection measures. However, there are also many other ways, such as setting up Schottky diodes or anti-reverse current electronic components or anti-short circuit electronic components or circuit safety protection components or safety circuit setting measures, to achieve the circuit safety protection effect.

[0157] Please see Figure 19 This is the seventh embodiment of the present invention, which is largely the same as the sixth embodiment, except that this embodiment has a limiting structure 50 protruding from the two surfaces of the connecting plate 55.

[0158] Please see Figure 20 and Figure 21This is the eighth embodiment of the present invention, which is largely the same as the fifth embodiment. The difference is that the electronic unit in this embodiment is further provided with a memory 44. The connection interface of one side of the connection board 55 is electrically connected to the memory 43, which is the same interface as in the fifth embodiment, namely a USB 3.0 connection interface. The other side of the connection board 55 is provided with a row of 9 first contacts 41, which is a miCard connection interface. The row of 9 first contacts 41 is electrically connected to the memory 44.

[0159] Please see Figure 22 This is the ninth embodiment of the present invention, which is a USB 3.0 flash drive. It is largely the same as the seventh embodiment, and also includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, two rows of first terminals 60 and two rows of second terminals 70, and a limiting structure. The difference lies in the addition of a detection structure, which includes two movable terminals and two contacts. The two movable terminals are one of the two rows of second terminals 70, and the two contacts are contacts 417 and 418 located on the two surfaces of the circuit board 40. Contacts 417 and 418 are electrically connected to a control circuit 45. The control circuit 45 of the electronic unit 4 includes a safety circuit setting means. In use, when the flash drive is inserted into the electrical connector, and when one row of first terminals 60 and one row of second terminals 70 on the upper surface of the connecting plate 55 are electrically connected to the electrical connector, the… One of the second terminals 70 is connected to the contact 417 to complete the detection. Thus, the control circuit 45 knows that a row of first terminals 60 and a row of second terminals 70 on the upper surface of the connecting board 55 are electrically connected to the electrical connector, which can provide appropriate circuit safety protection to prevent a short circuit caused by a row of first terminals 60 and a row of second terminals 70 on the lower surface of the connecting board 55. Conversely, when the flash drive is inserted into the electrical connector with the reverse side facing down, and a row of first terminals 60 and a row of second terminals 70 on the lower surface of the connecting board 55 are electrically connected to the electrical connector, one of the second terminals 70 is connected to the contact 418 to complete the detection. Thus, the control circuit 45 knows that a row of first terminals 60 and a row of second terminals 70 on the lower surface of the connecting board 55 are electrically connected to the electrical connector, which can provide appropriate circuit safety protection to prevent a short circuit caused by a row of first terminals 60 and a row of second terminals 70 on the upper surface of the connecting board 55.

[0160] Please see Figure 23 This is the tenth embodiment of the present invention, which is a USB 3.0 flash drive. It is largely the same as the ninth embodiment, except that this embodiment only has a row of first terminals 60, and each first terminal 60 has first contacts 62 and 63 respectively flatly attached to the two surfaces of the connecting plate 55.

[0161] Please see Figure 24This is the eleventh embodiment of the present invention, which is a USB 3.0 flash drive. It is largely the same as the ninth embodiment, except that the electronic unit 4 in this embodiment includes a memory 43 and a control circuit 45, and also includes another memory 44. The first contact of a row of first terminals 60 and the second contact of a row of second terminals 70 on one side of the connecting board 55 are electrically connected to the memory 43, while the first contact of a row of first terminals 60 and the second contact of a row of second terminals 70 on the other side of the connecting board are electrically connected to the memory 44.

[0162] Please see Figure 25 , Figure 26 and Figure 27 This is the twelfth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the first and second embodiments, except that the electronic unit 4 in this embodiment includes a memory 43(A) and a control circuit 45, and also includes another memory 44(B). Furthermore, it is equipped with a switching device 90, which has a sliding button 91 and a sliding groove 92 on the outer cover 30. The sliding button 91 can slide in the sliding groove 92 to switch between A, B, and C. Figure 28 As shown, the inner surface of the sliding button 91 has two rows of conductive parts 93, each row containing four conductive parts. The control circuit 45 has an IC control chip 47. The two rows of first contacts 41 have the same connection interface and their circuit numbers are arranged in reverse order. The circuits with the same circuit number are electrically connected in series and then electrically connected to the IC control chip 47. The IC control chip 47 is electrically connected to memory A and memory B respectively through four circuits 49. Each circuit 49 has a pair of separate contacts 4. 8. The four terminals 48 of the four circuits that connect to memory A are arranged in a row, and the four terminals 48 of the four circuits that connect to memory B are also arranged in a row. The two rows of conductive parts 93 of the sliding button 91 can be connected to the four terminals 48 of the four circuits that connect to memory A, or to the four terminals 48 of the four circuits that connect to memory B, or to both the four terminals 48 of the four circuits that connect to memory A and the four terminals 48 of the four circuits that connect to memory B at the same time.

[0163] Please see Figure 28 When the slider 91 is switched to position A, one row of conductive parts 93 of the slider 91 is a single conductor connecting the four terminals 48 of the four electrical connections to memory A. At this time, memory A can be electrically connected on both sides, and the control circuit 45 only operates for memory A, while memory B is in an open circuit state to prevent read / write operations; please refer to Figure 29When the slider 91 is switched to position B, one row of conductive parts 93 of the slider 91 is a single conductor connecting the four terminals 48 of the four circuits that connect to the memory B. At this time, the memory B can be electrically connected on both sides. The control circuit 45 only operates on the memory B, while the memory A is in an open circuit state and can be prevented from being read or written. Please refer to [link to relevant documentation]. Figure 30 When the sliding button 91 is switched to position C, the two rows of conductive parts 93 of the sliding button 91 are simultaneously connected to the four terminals 48 of the four circuits that are electrically connected to memory A and the four terminals 48 of the four circuits that are electrically connected to memory B. At this time, memory A and B can be electrically connected on both sides, and the control circuit 45 operates on memory A and B at the same time.

[0164] Please see Figure 31 This is the thirteenth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the twelfth embodiment, except that the control circuit 45 of this embodiment is provided with two IC control chips 47. One IC control chip 47 is electrically connected to the memory A and a row of first contacts a1, a2, a3, a4, and the other IC control chip 47 is electrically connected to the memory B and a row of first contacts b1, b2, b3, b4.

[0165] Please see Figure 32 This is the fourteenth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the twelfth embodiment, except that the control circuit 45 of this embodiment is provided with two IC control chips 47. One IC control chip 47 is electrically connected to the memory A, and the other IC control chip 47 is electrically connected to the memory B.

[0166] Please see Figure 33 and Figure 34 This is the fifteenth embodiment of the present invention, which is a Secure Digital Card (SDC) that can be electrically connected to an electrical connector on both sides. It includes an outer cover 30, a circuit board 40, a connecting plate 55, a limiting structure 50, and an electronic unit 4, wherein:

[0167] The outer cover 30 is made of plastic.

[0168] The connecting plate 55 is integrally formed on the front end of the outer cover 30. The shape of the connecting plate 55 is symmetrical from left to right, so it can be positioned on both sides of the electrical connection socket.

[0169] The circuit board 40 is covered by the outer cover 30. The front end of the circuit board 40 extends to the connecting plate 55. Each of the two front surfaces of the circuit board 40 has a row of first contacts 41, as shown in the mesh lines. The two rows of first contacts 41 are exposed on the two surfaces of the connecting plate 55. The two rows of first contacts 41 are all nine of the same connection interface and the circuit numbers are arranged in reverse order. In addition, the shape of the connecting plate 55 is symmetrical on both sides, so it can be positioned on both sides of an electrical connection socket.

[0170] The electronic unit 4 is a storage unit that is electrically connected to the circuit board 40 and is covered by the outer cover 30. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0171] The limiting structure 50 is also integrally formed with the outer cover 30 and the connecting plate 55. The limiting structure 50 is provided on the two surfaces of the connecting plate 55 and protrudes from the first contact points 41 of the second row, so as to prevent the first contact points 41 of the second row from being scratched and short-circuited.

[0172] With the above structure, the SDC can be positioned and electrically connected by inserting it into the connection slot of an electrical connection female socket on both sides.

[0173] In addition, other memory cards such as miCard, micro SDC, mini SDC, Memory Stick Card (MSC), Memory Stick Dou Card (MS-Dou C), etc., can all be implemented as in the fifteenth embodiment.

[0174] Please see Figure 35 This is the sixteenth embodiment of the present invention, which is largely the same as the seventh embodiment. The difference is that the two rows of first contact points 62 on the two surfaces of the connecting plate 55 in this embodiment are different connection interfaces, and the limiting structures 50 on the two surfaces of the connecting plate 55 are also staggered vertically.

[0175] Please see Figure 36 and Figure 37 This is the seventeenth embodiment of the present invention, which is an IC chip card (referred to as a smart card), which can be electrically connected to an electrical connection socket on both sides. It includes an outer cover, a connecting plate, and an electronic unit 4, wherein:

[0176] The outer cover and connecting plate are integrally molded plastic sheet-like mating structures 58. The front part of the mating structure 58 is a connecting plate 55, which can be positioned on both sides of an electrical connection socket. The two sides of the connecting plate 55 are each flatly provided with the same connection interface and a row of first contacts 62 and a row of second contacts 72 with the circuit numbers arranged in opposite directions. The two rows of second contacts 72 are located after the two rows of first contacts 62.

[0177] The electronic unit 4 is an IC chip, which is located in the docking structure 58, and the two rows of first contacts 62 and the two rows of second contacts 72 are electrically connected to the electronic unit 4.

[0178] With the above structure, the IC chip card can be positioned and electrically connected by inserting it into the connection slot of the electrical connection socket on both sides.

[0179] Please see Figure 38 , Figure 39 and Figure 39A This is the eighteenth embodiment of the present invention, which is a USB 2.0 standard electrical connection cable that can be electrically connected to an electrical connection female connector in both directions. It includes an outer cover 30, an electronic unit 4, a connecting plate 55, and two rows of first terminals 60 and the electronic unit 4, wherein:

[0180] The outer cover 30 is made of plastic.

[0181] The connecting plate 55 is integrally formed at the front end of the outer cover 30.

[0182] The electronic unit 4 consists of a group of four wires 419, which are covered by the outer cover 30.

[0183] The two rows of first terminals 60 are fixed to the outer cover 30. Each row of first terminals 60 has four terminals, capable of transmitting VCC, USB D-, USB D+, and GND signals respectively. Each first terminal 60 has a non-movable extension. One end of the extension extends to the connecting plate 55 and has a first contact 62 flat against one surface of the connecting plate 55. The other end of the extension is electrically connected to a wire of the electronic unit 4. The two rows of first contacts 62 are flat against the two surfaces of the connecting plate 55 respectively. The two rows of first contacts 62 have the same connection interface, and their circuit numbers are arranged in reverse order. The circuits with the same circuit number in the two rows of first contacts 41 are circuits with the same signal. For example, in the two rows of first contacts 41, the 1s in both rows are power circuits, and the 4s in both rows are ground circuits. Figure 39A As shown, the circuit numbers on the front side are 1, 2, 3, 4 from right to left, while the circuit numbers on the back side are 4, 3, 2, 1 from right to left. The circuits with the same signal at the first contact 62 in the two rows are electrically connected to the same wire of the electronic unit 4.

[0184] With the above structure, the electrical connection cable can be positioned and electrically connected by inserting it into the connection slot of the electrical connection female socket from both sides. The other end of the electrical connection cable can be electrically connected to various electronic devices such as keyboards, mice, LED lights, fans, adapters, etc.

[0185] Please see Figure 40 and Figure 41This is the nineteenth embodiment of the present invention, which is a USB 2.0 wireless transceiver device that can be electrically connected to an electrical connector on both sides. It includes an outer cover 30, a circuit board 40, an electronic unit 4, a connecting plate 55, and a limiting structure 50, wherein:

[0186] The outer cover 30 is made of plastic.

[0187] The connecting plate 55 is integrally formed at the front end of the outer cover 30.

[0188] The rear section of the circuit board 40 is covered by the outer cover 30, and the front section of the circuit board 40 is exposed outside the outer cover 30, which is the connecting plate 55. The two surfaces of the connecting plate 55 are provided with two rows of first contacts 41. The two rows of first contacts 41 are circuit contacts formed on the circuit board 40. The two rows of first contacts 41 are all four identical connection interfaces and the circuit numbers are arranged in reverse order.

[0189] The electronic unit 4 is a wireless transceiver module, which is electrically connected to the circuit board 40 and is covered by the outer cover 30. It can wirelessly transmit and receive electronic signals. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0190] The limiting structure 50 is a metal layer that is electroplated on both sides of the two surfaces of the connecting plate 55. The limiting structure 50 protects the two rows of first contacts 41 on the connecting plate 55 from scratches.

[0191] With the above structure, the wireless transceiver can be positioned and electrically connected by inserting it into the connection slot of the electrical connection socket from either side.

[0192] The wireless transceiver device in this embodiment can be a wireless network card, a Bluetooth receiver, a 2.4G wireless transmission receiver (such as a wireless mouse transceiver), etc.

[0193] Please see Figure 42 This is the twentieth embodiment of the present invention, which is a USB 3.0 standard adapter connector that can be electrically connected to an electrical connector female on both sides. It includes an outer cover 30, an electronic unit 4, a connecting plate 55, a circuit board 40, two rows of first terminals 60, and two rows of second terminals 60, wherein:

[0194] The outer cover 30 is made of plastic.

[0195] The connecting plate 55 is a plastic plate, which is fixed to the front end of the outer cover 30, and its rear end is integrally formed into a fixing seat 59 fixed inside the outer cover 30. The connecting plate 55 protrudes outside the outer cover 30.

[0196] The circuit board 40 is located inside the outer cover 30.

[0197] The electronic unit 4 is a USB 3.0 standard male electrical connector and an adapter circuit, part of which is covered by the outer cover 30 and is electrically connected to the circuit board 40.

[0198] The first terminals 60 of the two rows are fixed to the outer cover 30. There are four of each first terminal 60 in the two rows. Each first terminal 60 has a non-elastic extension. One end of the extension extends to the connecting plate 55 and has a first contact 62 that is flat against one surface of the connecting plate 55. The other end of the extension is soldered to the circuit board 40 and electrically connected to the electronic unit 4. The first contacts 62 of the two rows are flat against the two surfaces of the connecting plate 55 respectively.

[0199] Each of the two rows of second terminals 70 consists of five terminals. Each second terminal 70 has a spring-loaded extension. One end of the extension extends to the connecting plate 55 and has a protruding second contact 72. The other end of the extension is soldered to the circuit board 40 and electrically connected to the electronic unit 4. The two rows of second contacts 72 protrude from the two surfaces of the connecting plate 55 and are located after the two rows of first contacts 62. The second contacts 72 can spring up and down with the extension 71.

[0200] In this embodiment, the first contact 62 and the second contact 72 of the second row are the same connection interface and the circuit numbers are arranged in reverse order.

[0201] With the above structure, the adapter connector can be positioned and electrically connected by inserting the connector plate 55 into the connection slot of the electrical connection female socket on both sides.

[0202] Please see Figure 43 and Figure 44 This is the twenty-first embodiment of the present invention, which is an adapter electrical connector with dual connection interfaces, comprising an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, and a limiting structure 50, wherein:

[0203] The outer cover 30 is made of plastic.

[0204] The rear section of the circuit board 40 is fixed inside the outer cover 30, while the front section of the circuit board 40 protrudes outside the outer cover 30, forming the connecting plate 55. The connecting plate 55 has two rows of first contacts 41 on its two surfaces. These two rows of first contacts 41 are circuit contacts formed on the circuit board 40, and they are different connection interfaces. Furthermore, the connecting plate 55 is symmetrical in shape, allowing it to be positioned on both sides of an electrical connector.

[0205] The electronic unit 4 is a USB 2.0 standard electrical connector and an adapter circuit, which is located inside the outer cover 30 and is electrically connected to the circuit board 40. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0206] With the above structure, the adapter connector makes electrical connections by inserting the connection plate 55 into the connection slots of the electrical connection females with different connection interfaces on both sides.

[0207] Please see Figure 45 and Figure 46 This is the twenty-second embodiment of the present invention, which is a USB 2.0 standard adapter connector. It is largely the same as the twenty-first embodiment, except that in this embodiment, the two rows of first contacts 41 are all four identical connection interfaces and the circuit numbers are arranged in reverse order. The electronic unit 4 is a dual-connection interface electrical connection female and an adapter circuit, such as... Figure 46 As shown, the two sides of the tongue 413 of the electronic unit 4 are respectively provided with a row of first contacts 411. The two rows of first contacts 411 are different connection interfaces. The electronic unit 4 is located inside the outer cover 30 and is electrically connected to the circuit board 40. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0208] Please see Figure 47 and Figure 48 This is the twenty-third embodiment of the present invention, which is a USB 3.0 standard adapter connector. It is largely the same as the twenty-first embodiment, except that the electronic unit 4 in this embodiment is a double-sided electrically connected male connector and an adapter circuit. The top and bottom surfaces of the connection slot 410 of the electronic unit 4 are provided with a row of first contacts 411 and a row of second contacts 412. The row of first contacts 411 and the row of second contacts 412 on the top surface and the row of first contacts 411 and the row of second contacts 412 on the bottom surface are the same connection interface and the circuit numbers are arranged in reverse order. The second connection interface of the electrical connection structure is electrically connected to the adapter circuit. The front end of the connection slot 410 is an insertion port. In addition, the upper and lower surfaces of the connection plate 55 are provided with protruding limiting structures 50.

[0209] Please see Figure 49 This is the twenty-fourth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the first embodiment, except that the connecting plate 55 and the limiting structure 50 in this embodiment are integrally molded plastic. The upper and lower surfaces of the connecting plate 55 are each flatly provided with a row of four first contacts 62. The two rows of first contacts 62 are formed on the two rows of first terminals 60. The two rows of first contacts 62 have the same connection interface and the circuit numbers are arranged in reverse order. The outer cover 30 is a metal shell. The outer cover 30 covers the periphery of the connecting plate 55, leaving only the upper and lower surfaces exposed. The outer cover 30 on both sides of the connecting plate 55 is provided with a positioning groove 35. When the flash drive is inserted into a female socket, it can be locked with the female socket by the positioning groove 35.

[0210] The first terminal 60 of the second row can be embedded or ejected and positioned on the connecting plate 55, or it can be assembled and positioned on the connecting plate 55.

[0211] Please see Figure 50 This is the twenty-fifth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the twenty-fourth embodiment, except that the positioning groove 35 in this embodiment is slightly different.

[0212] Please see Figure 51 This is the twenty-sixth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the twenty-fourth embodiment, except that the outer covers 30 on both sides of the connecting plate 55 in this embodiment are provided with a positioning spring 36. When the flash drive is inserted into a female socket, it can be locked to the female socket by the positioning spring 36.

[0213] Please see Figure 52 This is the twenty-seventh embodiment of the present invention, which is a USB 2.0 flash drive. It includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, and a limiting structure 50. It is largely the same as the first embodiment, except that the connecting plate 55 and the limiting structure 50 are integrally molded from plastic. The circuit board 40 is thinner. A slot 52 is provided at the rear end of the connecting plate 55 for one end of the circuit board 40 to be inserted and secured. A row of four first connectors is flatly attached to the upper and lower surfaces of the connecting plate 55. Point 62, the two rows of first contacts 62 are formed on the two rows of first terminals 60. The two rows of first contacts 62 have the same connection interface and the circuit numbers are arranged in reverse order. The two rows of first contacts 62 are electrically connected to the circuit board 40. The electronic unit 4 is a storage unit, which is electrically connected to the circuit board 40 and is covered by the outer cover 30. It includes a memory 43 and a control circuit 45. The control circuit 45 controls the operation of the memory 43 of the electronic unit. The two rows of first contacts 62 are electrically connected to the electronic unit 4.

[0214] With the above structure, the circuit board 40 can be made of a thinner plate. When the thickness of the outer cover 30 is approximately the same as the thickness of the connecting plate 55, there is still enough space on the circuit board 40 located inside the outer cover 30 to house the electronic unit 4.

[0215] Please see Figure 53This is the twenty-eighth embodiment of the present invention, which is a USB 2.0 flash drive. It includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, and a limiting structure 50. It is largely the same as the first embodiment, except that the circuit board 40 in this embodiment is thinner. An upper and lower circuit board 422 and 423 are respectively stacked on the upper and lower surfaces of the front section of the circuit board 40. The stacked upper circuit board 422, circuit board 40, and lower circuit board 422 extend beyond the front end of the outer cover 30 to form the connecting plate 55. Each of the upper and lower circuit boards 422 and 423 has... There are four first contacts 41 in a row. The two rows of first contacts 41 have the same connection interface and their circuit numbers are arranged in reverse order. The two rows of first contacts 41 are electrically connected to the circuit board 40 through the conductive part 420 that passes through the connecting plate 55. The conductive part 420 is formed by drilling and then filling with solder. The electronic unit 4 is a storage unit that is electrically connected to the circuit board 40 and is covered by the outer cover 30. It includes a memory 43 and a control circuit 45. The control circuit 45 controls the operation of the memory 43 of the electronic unit. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0216] Please see Figure 54 The present invention is the twenty-ninth embodiment, which is a USB 2.0 flash drive. It is largely the same as the twenty-eighth embodiment, except that a plastic plate 37 and a lower circuit board 423 are superimposed on the lower front panel of the circuit board 40 in this embodiment. The superimposed circuit board 40, plastic plate 37 and lower circuit board 422 extend out of the front end of the outer cover 30 to form the connecting plate 55. In addition, the conductive part 420 is formed by drilling a hole and then inserting a terminal and soldering it.

[0217] Please see Figure 55 This is the thirtieth embodiment of the present invention, which is a dual-interface flash drive. It is largely the same as the twenty-ninth embodiment, except that this embodiment has two circuit boards 40 and an electronic unit 4. The front ends of the two circuit boards 40 are overlapped with a plastic plate 37 and extend out of the front end of the outer cover 30 to form a connecting plate 55. The upper and lower surfaces of the connecting plate 55 are each provided with a row of first contacts 41. The two rows of first contacts 41 are different connection interfaces. The electronic unit is a storage unit and is covered by the outer cover 30. The electronic unit 4 includes a memory 43, a memory 44, and two control circuits 45. The two control circuits 45 control the operation of the memory 43 and 44 respectively. One circuit board 40 is provided with the memory 43 and the control circuit 45, and the memory 43 and the control circuit 45 are electrically connected to a row of first contacts 41 on it. Another circuit board 40 is provided with the memory 44 and another control circuit 45, and the memory 44 and the other control circuit 45 are electrically connected to a row of first contacts 41 on it.

[0218] Please see Figure 56 and Figure 57This is the thirty-first embodiment of the present invention, which is a USB 2.0 standard electrical connection cable. It is generally the same as the eighteenth embodiment, except that the two surfaces of the connection board 55 in this embodiment are integrally formed with a protruding limiting structure 50 to prevent the first contact 62 from short-circuiting. In addition, the first contact 62 of the circuit number 1 (transmitting VCC) on both surfaces of the connection board 55 is electrically connected to a Schottky diode 46, and then electrically connected to a wire of the electrical connection cable. The Schottky diode 46 can prevent current reverse flow, thereby ensuring that the first contact 62 transmitting VCC will not be short-circuited. In addition to using Schottky diodes to prevent short circuits, other anti-reverse current electronic components, anti-short circuit electronic components, circuit safety protection components, or safety circuit setting means can also be used to achieve the circuit safety protection effect.

[0219] In this embodiment, a mating metal shell 38 is fitted over the front, left and right sides, the two sides of the upper and lower front sections, and the rear section of the connecting plate 55. The height of the mating metal shell 38 is higher than the height of the first contact points 62 in the second row. Each side plate of the mating metal shell 38 is provided with a positioning groove 35. When the electrical connection wire is inserted into a female connector, it can be locked with the female connector by the positioning groove 35.

[0220] Please see Figure 58 This is the thirty-second embodiment of the present invention, which is a USB 2.0 standard electrical connection cable. It is generally the same as the thirty-first embodiment, except that the connection plate 55 of this embodiment is further provided with a metal reinforcing plate 59. The reinforcing plate 59 is a metal partition that separates the two rows of first terminals 60 and the two rows of first contacts 62.

[0221] Please see Figure 59 This is the thirty-third embodiment of the present invention, which is a USB 2.0 standard electrical connection cable, which is largely the same as the thirty-second embodiment. The connection plate 55 also has a metal reinforcing plate 59, the difference being that this embodiment does not have a metal shell.

[0222] The connecting plate of the present invention is in direct contact with and fixed to the outer cover, unlike the packaged electronic components on the display card which are fixed to the circuit board through pins. This distinction is hereby specifically stated.

[0223] Please see Figure 60 , Figure 61 , Figure 62 ,and Figure 63 This is the thirty-fourth embodiment of the present invention, which is a USB 2.0 flash drive that can be electrically connected to an electrical connector on both sides. It includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, a limiting structure 50, and a row of first terminals 60, wherein:

[0224] The circuit board 40 has an insulating base 34 on its front section to form the connecting plate 55. In this embodiment, the connecting plate 55 has a butt joint structure. The insulating base 34 has a row of four first terminals 60. Each first terminal 60 has a first contact 62 that is flat against the upper surface of the connecting plate 55 and extends a lead 64 to be soldered to the circuit board 55. The lead 64 is bent downward from the front end of the connecting plate 55 to the upper surface of the circuit board 40 and soldered by SMT. This does not occupy the upper area of ​​the rear section of the circuit board 40, which is beneficial to the utilization of the upper area of ​​the rear section of the circuit board 40. The lower part of the front section of the circuit board 40 has a row of four gold finger first contacts 41. The row of first contacts 41 forms the connection interface of the lower surface of the connecting plate 55. The insulating base 34 has a U-shaped cross section, so that there is a space 39 between the insulating base 34 and the front section of the circuit board 40. In this way, electronic components 430 can still be arranged on the upper part of the front section of the circuit board 40. The circuit board 40 is a thin plate, about 0.3mm to 0.5mm thick.

[0225] The first contacts 62 and 41 of the two rows are both USB 2.0 interfaces, capable of transmitting VCC, USB D-, USB D+, and GND signals respectively. The first contacts 41 of the two rows are identical interfaces with their circuit numbers reversed. Figure 62 As shown, the circuit numbers of the first contacts 62 on the upper surface of the connecting plate 55, from right to left, are a1, a2, a3, a4; and the circuit numbers of the first contacts 41 on the lower surface of the connecting plate 55, from right to left, are b4, b3, b2, b1. Furthermore, the connecting plate 55 is symmetrical in both directions, thus allowing it to be positioned on an electrical connection socket with both sides facing each other.

[0226] The first contacts 62 and 41 of the two rows are electrically connected in series to form a group, namely a1 and b1, a2 and b2, a3 and b3, and a4 and b4. Among them, a1 and b1 are power supply contacts and must not be short-circuited. Therefore, a1 and b1 are first connected to each other through a Schottky diode 46. The main function of the Schottky diode 46 is to prevent current reverse flow, thus achieving the effect of preventing short circuit.

[0227] The above-mentioned use of Schottky diodes for short-circuit protection is one method of electronic reverse current protection or short-circuit protection for circuit safety. However, there are many other methods, such as setting up reverse current protection electronic components, short-circuit protection electronic components, circuit safety protection components, or safety circuit settings, to achieve the effect of circuit safety protection.

[0228] The outer cover 30 and the connecting plate 55 are combined to form a mating structure. The outer cover 30 and the insulating base 34 are integrally injection molded from plastic. The outer cover 30 covers the rear section of the circuit board 40. The cross-section of the outer cover 30 is also U-shaped, so that there is a space 39 between the outer cover 30 and the rear section of the circuit board 40.

[0229] The electronic unit 4 is a storage unit, which is electrically connected to the rear section of the circuit board 40 and covered by the outer cover 30. It includes a memory and a control circuit. The memory can be, but is not limited to, flash memory or read-only memory (ROM). The capacity of the memory is not limited. The control circuit controls the operation of the memory of the electronic unit. The first contacts 62 and 41 of the second row are electrically connected to the electronic unit 4.

[0230] In addition, this embodiment may include a control means combined with the USB 2.0 flash drive to perform a data storage and control program on the storage unit.

[0231] The limiting structure 50 is integrally formed with the insulating base 34. The limiting structure 50 forms a front-to-back protruding rib on each side of the two plates of the connecting plate 55. The limiting structure 50 protrudes from the first contact points 62 and 41 on the two plates of the connecting plate 55 to protect the two rows of first contact points 41.

[0232] The reinforcing plate 59 is made of metal and has a U-shaped cross section. It is located on both sides of the insulating base 34. The reinforcing plate 59 extends from the connecting plate 55 to the rear section of the circuit board 40 and is provided with a soldering plate 591 to be soldered and fixed to the circuit board 40.

[0233] In addition, in practice, the insulating base 34 can also be provided with multiple small-area solder plates, and the reinforcement effect can be achieved by soldering the solder plates to the circuit board.

[0234] With the above structure, this embodiment has the following advantages:

[0235] 1. The space 39 formed within the connecting plate 55 allows electronic components 430 to still be configured on the front section of the circuit board 40.

[0236] 2. The outer cover 30 and the insulating base 34 are integrally injection molded from plastic, which makes the manufacturing process very simple.

[0237] 3. Simultaneously, an electronic short-circuit protection Schottky diode 46 and a mechanical anti-scratch and short-circuit protection limiting structure 50 are designed to ensure the safety of double-sided plug-in circuits.

[0238] The manufacturing method of this embodiment includes the following steps:

[0239] 1. A circuit board is provided. One side of the circuit board has two sets of serial circuits for USB 2.0 connection interfaces arranged in reverse order, a set of contacts for USB 2.0 connection interfaces, circuits and contacts for reverse current protection or short circuit protection or other electronic circuit safety protection devices, circuits and contacts for an electronic unit, and a soldering area for a reinforcing plate. The two sets of serial circuits for the sequentially reverse-arranged connection interfaces are electrically connected to the circuits of the electronic unit. The other side of the circuit board has a set of USB 2.0 connection interfaces, which are gold fingers.

[0240] 2. An insulating base is provided, which is a plastic base and has a USB 2.0 connection interface with a set of terminals. The terminals have pins. There is a space between the bottom of the insulating base and the circuit board, through which electronic components can be arranged. The insulating base has a reinforcing plate. The insulating base extends the length of the base to form an outer cover. The insulating base and the circuit are flush front and back, so as to completely cover the area on the circuit board where electronic components are arranged.

[0241] 3. Provide anti-reverse current electronic components or anti-short circuit electronic components or Schottky diodes or other electronic circuit safety protection devices;

[0242] 4. Provide an electronic unit, which is a storage unit, including memory and control circuitry;

[0243] 5. Provide soldering material to be applied to the contacts of the circuit board and the soldering area of ​​the reinforcing plate;

[0244] 6. Arrange and attach the anti-reverse current electronic component, or anti-short circuit electronic component, or Schottky diode or other electronic circuit safety protection device, electronic unit, and insulating base to the contacts of the circuit board, wherein the insulating base completely covers the area on the circuit board where the electronic components are arranged; and

[0245] 7. The components placed on the circuit board are reflowed to complete the manufacturing process of this simple board-type double-sided interface electronic device.

[0246] In the above manufacturing method, the circuit of the two sets of USB2.0 connection interfaces of the circuit board is connected in series. The circuit of circuit number 1 is electrically connected to the anti-reverse current electronic component, the anti-short circuit electronic component, the Schottky diode or other electronic circuit safety protection device. In addition, the insulating base is provided with a limiting structure for protruding the two sets of USB2.0 connection interfaces to prevent short circuit.

[0247] In addition, the electronic unit may be a wireless transceiver unit to form a wireless transceiver device, or a connecting cable to form an electrical connector, or an adapter circuit and an electrical connector to form an adapter connector, or an expansion circuit and a set of electrical connector sockets to form an expansion socket, or a control unit to form an IC controller.

[0248] The manufacturing method of the present invention is also disclosed and described in other embodiments.

[0249] Please see Figure 63A In the thirty-fourth embodiment, the top and two sides of the outer cover 30 and the two sides of the insulating base 34 can be provided with through holes 301, so that air convection can be provided when the outer cover 30 and the insulating base 34 are heat-sealed to the circuit board 40 or reflow soldering board, resulting in better heat sealing effect or better reflow soldering board processing.

[0250] Please see Figure 64 This is the thirty-fifth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-fourth embodiment, except that the circuit board 40 in this embodiment is thicker, about 0.8mm to 1.1mm.

[0251] Please see Figure 65 This is the thirty-sixth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-fourth embodiment, except that the pins 64 of the first terminal 60 in this embodiment are bent downward from the rear end of the connecting plate 55 to the rear section of the circuit board and soldered by SMT.

[0252] Please see Figure 66 This is the thirty-seventh embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-sixth embodiment, except that the pins 64 of the first terminal 60 in this embodiment are soldered through the circuit board, and the outer cover 30 is a sealing material that covers the circuit board 40 in a sealing manner. At the same time, it fills the space between the insulating base of the connecting plate 55 and the circuit board 40 to increase the strength. This is also a kind of reinforcement method.

[0253] Please see Figure 67 and Figure 68 This is the thirty-eighth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-seventh embodiment, except that a second circuit board 424 is superimposed on the front section of the circuit board 40 in this embodiment to form the connecting board 55. A row of first contacts 41 on the upper surface of the connecting board is formed on the second circuit board and is a row of gold fingers. A row of first contacts 41 on the lower surface of the connecting board is formed below the front section of the circuit board 40 and is a row of gold fingers. In addition, the limiting structure 50 is two insulating seats, which protrude from the upper and lower surfaces of the connecting board 55 respectively and are located between circuit numbers 1 and 2 and between circuit numbers 3 and 4 of the two rows of first contacts.

[0254] Please see Figure 69 , Figure 70 and Figure 71This is the thirty-ninth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-seventh embodiment, except that the insulating base of the connecting plate 55 and the outer cover 30 in this embodiment are both encapsulated bodies, which cover the circuit board 40 by encapsulation. The first terminal 60 of the row is formed by bending the front and rear ends of the lead 64 downward to the circuit board and soldering it by SMT. In addition, the limiting structure 50 is directly formed during encapsulation, and the position of the limiting structure 50 is the same as that in the thirty-eighth embodiment.

[0255] Please see Figure 72 , Figure 73 and Figure 74 This is the fortieth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-seventh embodiment, except that the circuit board 40 in this embodiment is a thick plate, about 1.0 mm thick, and there is no space between the insulating base 37 of the connecting plate 55 and the front part of the circuit board 40.

[0256] Please see Figure 75 , Figure 76 and Figure 77 This is the forty-first embodiment of the present invention, which is a USB 2.0 flash drive. It is generally the same as the twenty-seventh embodiment, except that the two rows of first terminals 60 are embedded in the connecting plate 55 and injection molded. The outer cover 30 is a sealing material that covers the circuit board 40 by sealing. In addition, a reinforcing plate 59 is provided on each side of the connecting plate 55. The reinforcing plate 59 is made of metal and has a concave cross-section. The reinforcing plate 59 extends from the connecting plate 55 to the circuit board 40 and is clamped and fixed to the circuit board 40.

[0257] Please see Figure 78 This is the forty-second embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the forty-first embodiment, except that the pins 64 of the two rows of first terminals 60 in this embodiment are all soldered to the circuit board 40.

[0258] Please see Figure 79 This is the forty-third embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the forty-first embodiment, except that the connection board in this embodiment does not have a slot to hold the circuit board 40.

[0259] Please see Figure 80 This is the forty-fourth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the forty-second embodiment, except that the pins 64 of the two rows of first terminals 60 in this embodiment are all soldered to the bottom of the circuit board 40.

[0260] Please see Figure 81 , Figure 82 and Figure 83 This is the forty-fifth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-fourth embodiment, except that the circuit board 40 in this embodiment has a plastic block 312 on each side of the lower front section. The two plastic blocks 312 are then stacked on a second circuit board 424 to form the connecting board 55. There is a space between the second circuit board 424 and the circuit board 40 and the two are aligned front and back. A row of first contacts 41 on one side of the connecting board 55 is formed outside the second circuit board 424 and is a row of gold fingers. A row of first contacts 41 on the other side of the connecting board 55 is formed outside the front section of the circuit board 40 and is a row of gold fingers.

[0261] The second circuit board 424 and the circuit board 40 are fixed to the two plastic blocks 312 by means of a pin 425. In addition, the two plastic blocks 312 are integrally formed with the limiting structure 50. The outer cover 30 is a sealing body, which covers the inner surface of the circuit board 40 and the second circuit board 424 by sealing.

[0262] Please see Figure 84 and Figure 85 This is the forty-sixth embodiment of the present invention, which is a USB 2.0 electronic device. It is generally the same as the thirty-sixth embodiment, except that the outer cover 30 of this embodiment is a plastic box with a height greater than that of the connecting plate 55. Thus, the circuit board 40 is located in the middle of the outer cover 30, and there is sufficient space on both sides of the circuit board 40 and the outer cover 30 to arrange related electronic components.

[0263] Please see Figure 86 This is the forty-seventh embodiment of the present invention, which is a USB 2.0 electronic device. It is generally the same as the thirtieth embodiment, except that the outer cover 30 of this embodiment is a plastic box with a height greater than the connecting plate 55, and the two circuit boards 40 are both thin plates of about 0.3mm. Thus, the two circuit boards 40 are in the middle of the outer cover 30, and there is enough space on both sides of the two circuit boards 40 to arrange related electronic components, which can shorten the length of the entire electronic device.

[0264] Please see Figure 87 and Figure 88This is the forty-eighth embodiment of the present invention, which is a mini USB 2.0 electronic device. It is largely the same as the thirty-fourth embodiment, except that the connecting plate 55 in this embodiment is a mating structure. The mating structure is a plastic insulating base 34 with a circuit board 40 attached below it. The insulating base has a row of first terminals 60. A row of first contacts 62 is formed on one side of the mating structure on the row of first terminals 60. The extended pins of the row of first terminals 60 are electrically connected to the circuit board 40. A row of first contacts 41 is formed on the other side of the mating structure below the circuit board 40 and is a row of gold fingers. There is a space between the insulating base 34 and the circuit board 40. The electronic unit 4 is disposed in the connecting plate 55 and electrically connected to the circuit board 40.

[0265] In the above-described 34th to 48th embodiments, the electronic unit 4 may be a storage unit to form a USB flash drive, or a wireless transceiver unit to form a wireless transceiver device, or a connecting wire to form an electrical connector, or an adapter circuit and an electrical connector to form an adapter connector, or an expansion circuit and a set of electrical connector sockets to form an expansion socket, or a control unit to form an IC controller.

[0266] In the manufacturing method described in the thirty-fourth embodiment, after the two sets of serial circuits and contacts of the USB 2.0 connection interface arranged in reverse order on the circuit board, there are two more sets of serial circuits and pads of the connection interface arranged in reverse order; the insulating base is provided with two more sets of USB 3.0 connection interfaces with spring-loaded terminal structures, the spring-loaded terminals are provided with pins, and the USB 3.0 connection interfaces are after the USB 2.0 connection interfaces; the circuit board is provided with a through slot for the spring-loaded terminal connection interfaces to spring; thus, a USB 3.0 specification electronic product can be manufactured.

[0267] In addition, in manufacturing, the insulating base can also be directly provided with multiple small-area solder plates. By soldering the solder plates to the circuit board, a reinforcement effect can be achieved. The insulating base can also be separated and extended to form an outer cover that completely covers the area on the circuit board where electronic components are placed.

[0268] Please see Figure 89 and Figure 90 This is the forty-ninth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the forty-first embodiment. In this embodiment, the connecting plate 55 and the two rows of first terminals 60 are also injection molded in a recessed manner. A reinforcing plate 59 is provided on each side of the connecting plate 55. The reinforcing plate 59 is made of metal and has a cross-section of [missing information]. The reinforcing plate 59 extends from the connecting plate 55 to the circuit board 40. The reinforcing plate 59 is clamped and fixed to the circuit board 40. The difference in this embodiment is that there is no encapsulant covering the circuit board 40 and covering the electronic unit 4 for the time being.

[0269] Furthermore, the first contacts 62 and 41 in these two rows are both USB 2.0 interfaces, capable of transmitting VCC, USB D-, USB D+, and GND signals respectively. The first contacts 41 in these two rows are identical interfaces with their circuit numbers arranged in reverse order. Figure 62 As shown, the circuit numbers of the first contacts 62 on the upper surface of the connecting plate 55, from right to left, are a1, a2, a3, a4; and the circuit numbers of the first contacts 41 on the lower surface of the connecting plate 55, from right to left, are b4, b3, b2, b1. Furthermore, the connecting plate 55 is symmetrical in both directions, thus allowing it to be positioned on an electrical connection socket with both sides facing each other.

[0270] The first contacts 62 and 41 of the two rows are electrically connected in series to form a group, namely a1 and b1, a2 and b2, a3 and b3, and a4 and b4. Among them, a1 and b1 are power supply contacts and must not be short-circuited. Therefore, a1 and b1 are first connected to each other through a Schottky diode 46. The main function of the Schottky diode 46 is to prevent current reverse flow, thus achieving the effect of preventing short circuit.

[0271] The above-mentioned use of Schottky diodes for short-circuit protection is one method of electronic reverse current protection or short-circuit protection for circuit safety. However, there are many other methods, such as setting up reverse current protection electronic components, short-circuit protection electronic components, circuit safety protection components, or safety circuit settings, to achieve the effect of circuit safety protection.

[0272] Please see Figure 91 This is the fiftieth embodiment of the present invention, which is largely the same as the forty-ninth embodiment, except that the reinforcing plate 59 in this embodiment has a cross-section of... shape.

[0273] Please see Figure 92 This is the fifty-first embodiment of the present invention, which is largely the same as the forty-ninth embodiment, except that the reinforcing plate 59 in this embodiment has a cross-section of... shape.

[0274] Please see Figure 93 This is the fifty-second embodiment of the present invention, which is largely the same as the forty-ninth embodiment, except that the cross-section of the reinforcing plate 59 in this embodiment is also... The shape, however, did not fit the circuit board 40.

[0275] Please see Figure 94 and Figure 95This is the fifty-third embodiment of the present invention, which is a USB 2.0 flash drive. It is generally the same as the forty-ninth embodiment. The difference in this embodiment is that the reinforcing plate 59 and the connecting plate 55 are integrally molded in plastic. The reinforcing plate 59 is integrally connected to the two rear ends of the connecting plate 55 and extends backward. The cross section of the reinforcing plate 59 is also U-shaped and fits the two sides of the circuit board 40.

[0276] In addition, the cross-section of the reinforcing plate 59 may be of other shapes to fit, snap, or bond the two sides of the circuit board.

[0277] Please see Figure 96 and Figure 97 This is the fifty-fourth embodiment of the present invention, which is a USB 2.0 flash drive. It is generally the same as the forty-ninth embodiment. The difference in this embodiment is that the reinforcing structure is a socket groove 52 provided on the connecting plate 55. The front end of the circuit board 40 is socketed and fixed in the socket groove 52. The socket groove 52 is located in the middle of the thickness of the connecting plate 55. The socket groove 52 covers and abuts the left and right sides and the top and bottom surfaces of the front end of the circuit board 40.

[0278] Please see Figure 98 and Figure 99 This is the fifty-fifth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the forty and forty-ninth embodiments. In this embodiment, the connecting board 55 also includes an insulating base 34 and the front section of the circuit board 40. The insulating base 34 is disposed on the front section of the circuit board 40. A row of first contacts 62 is provided on the insulating base 34. The row of first contacts 62 on the insulating base is formed into a row of first terminals 60. The first terminals 60 have pins 64 that are electrically connected to or soldered to the circuit board 40. A row of first contacts 41 is provided below the front section of the circuit board 40. The row of first contacts 41 on the circuit board are circuit contacts. A reinforcing plate 59 is provided on each side of the insulating base 34. The reinforcing plate 59 and the row of first terminals 60 are embedded in the insulating base 34 by plastic injection molding. The reinforcing plate 59 is made of metal and has a cross-section of [missing information]. The reinforcing plate 59 extends to the rear section of the circuit board 40 and is soldered to the circuit board 40. The difference in this embodiment is that there is no encapsulant covering the circuit board 40 and covering the electronic unit 4.

[0279] Please see Figure 100 This is the fifty-sixth embodiment of the present invention, which is largely the same as the fifty-fifth embodiment, except that the reinforcing plate 59 in this embodiment has a cross-section of... shape.

[0280] Please see Figure 101 This is the fifty-seventh embodiment of the present invention, which is largely the same as the fifty-fifth embodiment, except that the reinforcing plate 59 in this embodiment has a cross-section of... shape.

[0281] Please see Figure 102 This is the fifty-eighth embodiment of the present invention, which is largely the same as the fifty-fifth embodiment, except that the reinforcing plate 59 in this embodiment has a cross-section of... shape.

[0282] Please see Figure 103 This is the fifty-ninth embodiment of the present invention, which is largely the same as the fifty-fifth embodiment, except that the cross-section of the reinforcing plate 59 in this embodiment is... shape.

[0283] Please see Figure 104 , Figure 105 , Figure 106 and Figure 107 This is the sixtieth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-ninth embodiment, except that it includes a circuit board 40 and a second circuit board 424. The lower front section of the circuit board 40 has a row of four first contacts 41. An electronic unit 4 is first soldered onto the circuit board 40, two front-to-back extending reinforcing plates 59 are soldered to the two sides, and four U-shaped conductive sheets 593 are soldered to the front section. Then, an outer cover 30 is formed by sealing with adhesive to cover the circuit board 40 and the electronic unit 4, while exposing the upper ends of the two reinforcing plates 59 and the four conductive sheets 593. Figure 107 As shown, the second circuit board 424 has a row of four first contacts 41 on its top and solder pads corresponding to the two reinforcing plates 59 and four conductive sheets 593 on its bottom. The row of four first contacts 41 on the top is arranged in reverse and is electrically connected to the solder pads below through the conductive part 420. The second circuit board 424 is stacked on the front part of the outer cover 30 and the solder pads below are soldered to the upper ends of the two reinforcing plates 59 and four conductive sheets 593 to form a connecting plate 55. Thus, a row of first contacts with circuit numbers arranged in reverse order is formed on the top and bottom of the connecting plate 55.

[0284] The manufacturing method of this embodiment includes the following steps:

[0285] 1. A circuit board 40 is provided, which has two sets of conductive contacts, a series circuit in which the two sets of conductive contacts are arranged in reverse order, a circuit and contacts of a reverse current protection device or a short circuit protection device or other electronic circuit safety protection device, a circuit and contacts of an electronic unit 4, and contacts of a reinforcing plate 59. The series circuit in which the two sets of conductive contacts are arranged in reverse order is electrically connected to the circuit of the electronic unit 4. The two sets of conductive contacts are respectively located on different sides of the circuit board. One set of conductive contacts on the front side of the circuit board 40 opposite to the side where the contacts of the electronic unit 4 are located is a set of connection interfaces, namely a row of four first contacts 41, which is a USB 2.0 connection interface.

[0286] 2. Provide an insulator, which is a second circuit board 424, on which another set of connection interfaces is provided, namely a row of first contacts 41, which is a USB 2.0 connection interface;

[0287] 3. Provide anti-reverse current electronic components or anti-short circuit electronic components or Schottky diode 46 or other electronic circuit safety protection devices;

[0288] 4. Provide an electronic unit 4, an additional set of conductive contacts and a reinforcing plate 59, wherein the additional set of conductive contacts is a set of conductive sheets 593;

[0289] 5. Apply soldering material to the contacts of the circuit board 40;

[0290] 6. The anti-reverse current electronic component or anti-short circuit electronic component or Schottky diode or other electronic circuit safety protection device, electronic unit 4, and two reinforcing plates 59 are respectively arranged and attached to the corresponding contacts of the circuit board 40, and the set of conductive sheets 593 are attached to a set of conductive contacts on this side of the circuit board.

[0291] 7. Perform reflow soldering on the components that are respectively placed on the circuit board 40;

[0292] 8. Encapsulate one side of the circuit board 40 with the above-mentioned components to form an outer cover 30, and combine the circuit board 40 and the outer cover 30 into a package, and expose the set of conductive sheets 593 and the two reinforcing plates 59 on the upper surface of the outer cover 30, and expose a set of connection interfaces on the other side of the circuit board, namely a row of four first contacts 41, on one side of the circuit board of the package.

[0293] 9. A set of conductive sheets 593 and reinforcing plates 59 for applying welding material to the upper surface of the outer cover; and

[0294] 10. The second circuit board 424 is stacked on the front section of the upper surface of the outer cover 30. The solder joints of a set of connection interfaces of the second circuit board 424 are connected to the set of conductive sheets 593, and the second circuit board 424 is provided with solder joints to connect the two reinforcing plates 59. Finally, the reflow soldering process is performed.

[0295] The above-mentioned reinforcement structure uses a reinforcement plate 59, but a solder plate can also be used. The second circuit board 424 can be bonded to the outer cover 30 by ultrasonic or high-frequency means.

[0296] Please see Figure 108 This is the sixty-first embodiment of the present invention, which is generally the same as the sixtieth embodiment, except that the outer cover 30 of this embodiment further covers both sides of the circuit board 40.

[0297] Please see Figure 109This is the sixty-second embodiment of the present invention, which is generally the same as the sixtieth embodiment. The difference is that an insulating base 34 is superimposed on the outer cover 30 of this embodiment. The insulating base 34 is provided with a row of first contacts 62. The row of first contacts 62 is formed on a row of first terminals 60. The insulating base 34 and the row of first terminals 60 are formed by embedded plastic injection molding. The first terminals 60 are provided with leads welded to the upper ends of four conductive sheets on the front section of the outer cover 30. The insulating base 34 can be combined with the outer cover 30 by ultrasonic or high-frequency method.

[0298] Please see Figure 110 This is the sixty-third embodiment of the present invention, which is generally the same as the thirty-fourth embodiment. The difference is that the outer cover 30 and the insulating base 34 are separately provided rather than integrally formed. The outer cover 30 and the insulating base 34 can be combined on the circuit board 40 by ultrasonic or high-frequency means.

[0299] Please see Figure 111 , Figure 112 , Figure 113 and Figure 114 This is the sixty-fourth embodiment of the present invention, which is a USB 2.0 flash drive. It is largely the same as the thirty-fourth embodiment. This embodiment includes a circuit board 40, two insulating bases 34 and 34', an electronic unit 4, and an outer cover 30, wherein:

[0300] The circuit board 40 has a set of conductive contacts 430 on both the top and bottom surfaces, and two soldering areas 432 at the front end of each surface. Additionally, the circuit board 40 has a soldering area 434 extending forward and backward on each of the two sides of the bottom surface.

[0301] Each of the two insulating bases 34 and 34' is provided with a set of conductive contacts. Each set of conductive contacts consists of a row of four first contacts 62, which is the connection interface of USB 2.0. The two rows of first contacts 62 are formed on the two rows of first terminals 60. The two insulating bases 34 and 34' and the two rows of first terminals 60 are respectively made by embedded plastic injection molding. The two rows of first terminals 60 are provided with pins 64, which are respectively soldered to a set of conductive contacts 430 on the upper and lower surfaces of the circuit board 40. The front end 66 of the two rows of first terminals 60 is soldered to the soldering area 432 on the upper and lower surfaces of the circuit board 40. The front end of each of the two insulating bases 34 and 34' is provided with two notches 342 corresponding to the soldering area 432, which can be used for repair soldering. In addition, the insulating base 34 is larger, and its two sides are roughly flush with the circuit board 40. Each side of the insulating base is provided with a reinforcing plate 59 extending forward and backward, which is soldered to the soldering area 434.

[0302] The electronic unit 4 is a storage unit that includes related electronic components and control circuits. The electronic unit 4 is electrically connected to the circuit board 40.

[0303] The outer cover 30 is an insulating sealant that covers the side of the circuit board 40 where the electronic unit 4 and the insulating base 34' are soldered, leaving only one row of first contacts 62 on the insulating base 34' exposed on the upper surface of the outer cover 30.

[0304] With the above structure, the circuit board 40 has an insulating base on the upper and lower surfaces to form the connecting plate 55. The connecting plate 55 has a set of connecting interfaces on each side, namely the row of first contacts 62.

[0305] The manufacturing method of this embodiment includes the following steps:

[0306] 1. A circuit board 40 is provided, which has two sets of conductive contacts 430, a series circuit in which the two sets of conductive contacts are arranged in reverse order, a circuit and contacts of a reverse current protection device or a short circuit protection device or other electronic circuit safety protection device, a circuit and contacts of an electronic unit, and a soldering area 434 of a reinforcing plate 59. The series circuit is electrically connected to the circuit of the electronic unit, and the two sets of conductive contacts 430 are respectively provided on different sides of the circuit board 40.

[0307] 2. An insulator is provided, which is an insulating base 34, on which a set of USB 2.0 connection interfaces and reinforcing plates 59 are provided, which is a row of 4 first contacts 62. The row of first contacts 62 is formed in a row of first terminals 60. The insulating base 34' and the row of first terminals 60 are embedded in plastic injection molding.

[0308] 3. Provide anti-reverse current electronic components or anti-short circuit electronic components or Schottky diodes or other electronic circuit safety protection devices;

[0309] 4. Provide an electronic unit 4 and an additional set of conductive contacts. The additional set of conductive contacts is provided on an insulating base 34', which is a USB 2.0 connection interface. It consists of a row of four first contacts 62. The row of first contacts 62 is formed on a row of first terminals 60. The insulating base 34' and the row of first terminals 60 are formed by embedded plastic injection molding.

[0310] 5. Apply soldering material to the contacts and soldering area 432 on one side of the circuit board 40;

[0311] 6. The anti-reverse current electronic component or anti-short circuit electronic component or Schottky diode or other electronic circuit safety protection device and electronic unit 4 are respectively arranged and attached to the corresponding contacts on the circuit board 40. The additional set of conductive contacts, that is, the pins 64 of a row of first terminals 60 of the insulating base 34', are attached to a set of conductive contacts 430 on the side of the circuit board, wherein the front ends 66 of the two first terminals 60 are connected to the soldering area 432.

[0312] 7. Perform reflow soldering on the components that are respectively placed on the circuit board 40;

[0313] 8. The circuit board with the above-mentioned components is encapsulated to form an outer cover 30, and the circuit board 40 and the outer cover 30 are combined to form an encapsulation body, and the additional set of conductive contacts, namely the first contact 62 of the row of first terminals 60, are exposed on the upper surface of the outer cover 30 of the encapsulation body, and a set of conductive contacts on the other side of the circuit board are exposed on the circuit board side of the encapsulation body.

[0314] 9. A set of conductive contacts 430, a soldering area 432, and a soldering area 434 of a reinforcing plate are provided on one side of the circuit board, to which soldering material is applied; and

[0315] 10. The insulating base 34 is stacked on the front section of the circuit board 40 of the package. The pins 64 of a row of first terminals 60 of the insulating base 34 are connected to a set of conductive contacts 430 coated with soldering material. The front ends 66 of the two first terminals 60 are connected to the soldering area 432. The reinforcing plate 59 is connected to the soldering area 434 and reflow soldering is performed.

[0316] In this embodiment, the insulating base on the front section of the circuit board 40 is a smaller insulating base 34' which is sealed with adhesive to form an insulating base flush with both sides of the circuit board 40. The insulating base 34' is mainly used to first connect the row of first terminals 60 to achieve manufacturing simplicity. However, the row of first terminals 60 can also be directly soldered onto the circuit board 40 and then sealed with adhesive to directly form an insulating base.

[0317] The above-mentioned reinforcement structure uses a reinforcement plate 59, but a solder plate can also be used. The insulating base 34 can also be bonded to the circuit board 40 by ultrasonic or high-frequency means.

[0318] Please see Figure 115 and Figure 116 This is the sixty-fifth embodiment of the present invention, which is a USB 2.0 flash drive. It is generally the same as the sixty-fourth embodiment, except that the insulating base 34 of this embodiment is integrally provided with a limiting structure 50 on both sides protruding from the set of connection interfaces and a set of conductive contacts relative to the set of connection interfaces. That is, the limiting structure 50 protrudes from a row of first contacts 62 on both sides of the connecting plate 55.

[0319] In the above-described embodiments 49 to 65, the electronic unit 4 may be a storage unit to form a USB flash drive, or a wireless transceiver unit to form a wireless transceiver device, or a connecting wire to form an electrical connector, or an adapter circuit and an electrical connector to form an adapter connector, or an expansion circuit and a set of electrical connector sockets to form an expansion socket, or a control unit to form an IC controller.

[0320] The specific embodiments presented in the detailed description of the preferred embodiments are only for the purpose of illustrating the technical content of the present invention, and are not intended to limit the present invention narrowly to these embodiments. Various changes and implementations can be made without departing from the spirit of the present invention and the following claims.

[0321] List of main symbol names USB flash drive 1 USB flash drive 3

[0322] Plastic base 10, circuit board 15, contact 16

[0323] Electrical connection female socket 20, connection groove 21, tongue 22

[0324] Contact 23, Metal casing 25, Spring 24

[0325] Outer cover 30, lower seat 31, upper cover 32

[0326] 33 Chamber 34 Insulating base 35 Positioning groove

[0327] Positioning spring 36, plastic plate 37, metal shell 38

[0328] Space 39, Plastic block 312, Hole 301

[0329] Electronic Unit 4, Circuit Board 40, First Contact 41

[0330] Through-hole 42 Memory 43

[0331] Memory module 44 Control circuit 45 Schottky diode 46 IC control chip 47 Contact 48 Circuit 49

[0332] Connecting slot 410 First contact 411 Second contact 412

[0333] Tongue 413 Contact 417 Contact 418

[0334] Wire 419, Conductive part 420, Upper circuit board 422

[0335] Lower circuit board 423, Second circuit board 424, Pin 425

[0336] Conductive contact 430, welding area 432, welding area 434

[0337] Socket groove 52, limiting structure 50, connecting plate 55

[0338] 56 Perforation 57 Concave surface 58 Butt joint structure

[0339] Reinforcing plate 59, Welding plate 591, Conductive sheet 593

[0340] First terminal 60, extension 61, first contact 62

[0341] First contact point 63, pin 64, front end 66

[0342] Second terminal 70, extension 71, second contact 72

[0343] Detection structure 80, movable terminal 81, movable terminal 82

[0344] Fixed terminal 83, protrusion 85, switching device 90, sliding button 91, slide groove 92, conductive part 93.

Claims

1. A double-sided electrical connector, suitable for reversible double-sided electrical connection of a mating electrical connector, comprising: a mating structure, the mating structure having a connecting plate, the connecting plate having upper and lower plate surfaces, each of the upper and lower plate surfaces having a connecting interface, each of the two connecting interfaces having a row of contacts, each of the two rows of contacts on the two connecting interfaces having contacts for multiple circuits of different signals, the two rows of contacts being formed on two rows of terminals; characterized in that, Each of the two connection interfaces has one terminal as a detection terminal. Each of the two connection interfaces includes a USB connection interface with a pair of D+ contacts and D- contacts. Only one of the two USB connection interfaces is used to electrically connect to a mating electrical connector, and both of the two USB connection interfaces are also used to electrically connect to another mating electrical connector. The connection board has a row of contacts on each of its two opposite sides. The connection board can be electrically connected to a connection slot on both sides. One pair of contacts in each of the two rows of contacts on the connection board is electrically connected to form the same circuit.

2. A double-sided electrical connector, suitable for reversible double-sided electrical connection of a mating connector, comprising: a mating structure having upper and lower plates, each of the upper and lower plates having a connection interface, each of the two connection interfaces having a row of contacts, each of the two rows of contacts having a plurality of contacts for different signal circuits, the two rows of contacts being formed on two rows of terminals; characterized in that, Each of the two connection interfaces has one terminal as a detection terminal. Each of the two connection interfaces includes a USB connection interface with a pair of D+ contacts and D- contacts. Only one of the two USB connection interfaces is used to electrically connect to a mating electrical connector, and both USB connection interfaces are also used to electrically connect to the other mating electrical connector. The mating structure has a row of contacts on each of its two opposite sides. The mating structure can electrically connect to a mating electrical connector on both sides. One pair of contacts in the two rows of contacts of the mating structure is electrically connected to form the same circuit.

3. The double-sided electrical connector as described in any one of claims 1-2, characterized in that, One of the two connection interfaces is a detection terminal, or one of each of the two connection interfaces is a detection terminal, and the detection terminal can detect the direction of the electrical connection.

4. The double-sided electrical connector as described in any one of claims 1-2, characterized in that, A switching device is provided, which is electrically connected to the two connection interfaces and an IC control chip.

5. The double-sided electrical connector as described in any one of claims 1-5, characterized in that, The two rows of contacts on the two connection interfaces are also used for electrical connection with a single electrical connector.

6. A double-sided electrical connector suitable for reversible double-sided electrical connection of a mating connector, comprising: a mating structure, the mating structure having a connecting plate, the connecting plate having upper and lower plates, each of the upper and lower plates having a connecting interface, each of the two connecting interfaces having a row of contacts, each of the two rows of contacts on the two connecting interfaces having a plurality of contacts for different signal circuits, the two rows of contacts being formed on two rows of terminals; characterized in that, The connecting plate has a positioning structure on each of its left and right sides. The positioning structure is made entirely of metal. Each side of the positioning structure has a positioning recess. The two positioning recesses are located between the upper and lower plates. The two sides of the connecting plate that are opposite to each other include front and rear contacts. The connecting plate can be electrically connected to a connecting groove on both sides. One pair of circuit contacts in the two rows of contacts on the connecting plate are electrically connected to form the same circuit.

7. A double-sided electrical connector, suitable for reversible double-sided electrical connection of a mating connector, comprising: a mating structure having upper and lower plates, each of the upper and lower plates having a connection interface, each of the two connection interfaces having a row of contacts, each of the two rows of contacts having a plurality of contacts for different signal circuits, the two rows of contacts being formed on two rows of terminals; characterized in that, The docking structure has a positioning structure on each of its left and right sides. The positioning structure is made entirely of metal. Each side of the positioning structure has a positioning spring or a positioning recess. The two positioning springs or two positioning recesses are located between the upper and lower plates. The docking structure has two opposing sides, each with front and rear contact points. The docking structure can be electrically connected to a docking connector on both sides. One pair of circuit contacts in the two rows of contacts of the docking structure can be electrically connected to form the same circuit.

8. The double-sided electrical connector as described in any one of claims 6-7, characterized in that, The two rows of contacts on the two connection interfaces are also used for electrical connection with a single electrical connector.

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