Positive-negative double-sided electric connection structure

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 patent application with application number 201710542884.7, application date 2011.08.30, and invention name "Positive and Negative Double-Sided Electrical Connection Structure". TECHNICAL FIELD

[0002] The present application relates to an electrical connector, in particular to a positive and negative double-sided electrical connection structure. BACKGROUND

[0003] The most popular signal transmission specification for computer equipment today is the Universal Serial Bus (USB). The connector socket and transmission line made of this specification can make the peripheral equipment connected to the computer, such as mouse, keyboard, flash disk, etc., be detected and used immediately.

[0004] The current USB female socket and USB connector are one-way electrical connection. In order to ensure that the USB connector can be electrically connected when inserted into the USB female socket, both have a foolproof design when docking, that is, when the USB connector is inserted in reverse, it cannot be inserted, the user will insert it in the other direction, and only when the direction is correct can it be inserted. This can ensure that the electrical connection is established after insertion.

[0005] Currently, there are two specifications for USB, 2.0 and 3.0. Please refer to Figure 1 and Figure 2 , which is a disk body disk 1 with a plate type connector of the existing USB 2.0 specification. It is provided with a plastic seat body 10 and a circuit board 15. The rear section of the circuit board 15 is covered by the plastic seat body 10. The front section of the circuit board 15 only exposes one surface of the plastic seat body 10. The surface is provided with a row of four contacts 16.

[0006] Please refer to Figure 3 , which is an electrical connection female socket 20 of the existing USB 2.0 specification. It is provided with a metal shell 25 and a tongue 22. The metal shell 25 forms a connection slot 21 inside. The tongue 22 is located at the upper position of the connection slot. The tongue only has a row of four contacts 23 on the lower surface. The top and bottom surfaces of the metal shell 25 are each stamped with two spring pieces 24.

[0007] Please refer to Figure 4 In use, the flash disk 1 must be inserted with the contacts 16 facing up to be electrically connected with the row of contacts 23 located on the lower surface of the tongue 22. The four spring pieces 24 are in close contact with the disk body disk 1. If the disk body disk 1 is inserted in reverse, it cannot be electrically connected. The user usually inserts it randomly, so the probability of not being able to insert it is 1 / 2. Therefore, it is often inserted twice, causing inconvenience in use.

[0008] For the convenience of use, it is still required that the positive and negative sides can be electrically connected in both directions, so the applicant develops an electronic device with a double-sided positive and negative connector with double-sided electrical connection function. In order to match the double-sided electrical connection function, the connector must be designed with two rows of contacts. However, in use, the spring 24 of the electrical connection female seat may abut the contacts on the other board surface, causing a short circuit, so this problem also needs to be overcome.

[0009] The applicant of the present application has intensively researched the double-sided plug-in design of the above-mentioned product, and finally proposed a product improvement structure to overcome the above-mentioned potential problems. SUMMARY

[0010] The main purpose of the present application is to provide a positive and negative double-sided electrical connection structure, wherein the upper and lower surfaces of the mating structure have contacts, achieving convenience and versatility in use.

[0011] To achieve the above purpose, the present application provides a positive and negative double-sided electrical connection structure which can be positively and negatively mated with a mating electrical connector, comprising: a mating structure provided with a connection slot, the front end of the connection slot is an insertion port and is provided with a top surface and a bottom surface, the top surface and the bottom surface are each provided with a connection interface, the two connection interfaces are each provided with a row of contacts, the two rows of contacts are each provided with a plurality of contacts of different signals, the two rows of contacts are formed on two rows of terminals, the shape of the connection slot can be positively and negatively mated with a mating part of the mating electrical connector; 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 mating part is a connection plate, the upper and lower surfaces of the connection plate are each provided with a connection interface.

[0012] Through the above structure, the present application can achieve convenience and versatility in use.

[0013] The above and other objects, advantages and features of the present application will become more apparent from the detailed description of the preferred embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of a conventional USB flash disk.

[0015] Figure 2 is a front view of a conventional USB flash disk.

[0016] Figure 3 is a front view of a conventional electrical connection female seat.

[0017] Figure 4 is a front view of a conventional USB flash disk inserted into an electrical connection female seat.

[0018] Figure 5 is a perspective exploded view of the first embodiment of the present application. is a perspective exploded view of the first embodiment of the present application.

[0019] Figure 6 is a perspective assembly view of the first embodiment of the present application.

[0020] Figure 7 is a front view of the first embodiment of the present application.

[0021] Figure 8 is a schematic diagram of the first contact stringing of the second row of the first embodiment of the present application.

[0022] Figure 9 is a use state view of the first embodiment of the present application.

[0023] Figure 10 is a perspective assembly view of the second embodiment of the present application.

[0024] Figure 11 is a front view of the second embodiment of the present application.

[0025] Figure 12 is a perspective assembly view of the third embodiment of the present application.

[0026] Figure 13 is a schematic diagram of the first contact stringing of the second row of the third embodiment of the present application.

[0027] Figure 14 is a side view of the fourth embodiment of the present application.

[0028] Figure 15 is a front view of the fourth embodiment of the present application.

[0029] Figure 16 is a perspective assembly view of the fifth embodiment of the present application.

[0030] Figure 17 is a perspective exploded view of the sixth embodiment of the present application.

[0031] Figure 18 is a perspective assembly view of the sixth embodiment of the present application.

[0032] Figure 19 is a perspective assembly view of the seventh embodiment of the present application.

[0033] Figure 20 is a perspective assembly view of the front of the eighth embodiment of the present application.

[0034] Figure 21 is a perspective assembly view of the back of the eighth embodiment of the present application.

[0035] Figure 22 is a side view of the ninth embodiment of the present application.

[0036] Figure 23 is a side view of the tenth embodiment of the present application.

[0037] Figure 24 is a side sectional view of the eleventh embodiment of the present application.

[0038] Figure 25 is a perspective assembly view of the twelfth embodiment of the present application.

[0039] Figure 26 is a front sectional view of the twelfth embodiment of the present application.

[0040] Figure 27 is a side sectional view of the twelfth embodiment of the present application.

[0041] Figure 28 is a schematic diagram of a switching switch device and a control circuit of the twelfth embodiment of the present application.

[0042] Figure 29 is a schematic diagram of a switching switch device and a control circuit of the twelfth embodiment of the present application.

[0043] Figure 30 is a schematic diagram of a switching switch device and a control circuit of the twelfth embodiment of the present application.

[0044] Figure 31 is a schematic diagram of a switching switch device and a control circuit of the thirteenth embodiment of the present application.

[0045] Figure 32 is a schematic diagram of a switching switch device and a control circuit of the fourteenth embodiment of the present application.

[0046] Figure 33 is a front plan view of the fifteenth embodiment of the present application.

[0047] Figure 34 is a back plan view of the fifteenth embodiment of the present application.

[0048] Figure 35 is a front sectional view of the sixteenth embodiment of the present application.

[0049] Figure 36 is a front plan view of the seventeenth embodiment of the present application.

[0050] Figure 37 is a back plan view of the seventeenth embodiment of the present application.

[0051] Figure 38 is an upper view of the eighteenth embodiment of the present application.

[0052] Figure 39 is a side sectional view of the eighteenth embodiment of the present application.

[0053] Figure 39A is a front sectional view of the eighteenth embodiment of the present application.

[0054] Figure 40 is a perspective assembly view of the nineteenth embodiment of the present application.

[0055] Figure 41 is a side sectional view of the nineteenth embodiment of the present application.

[0056] Figure 42 is a side sectional view of the twentieth embodiment of the present application.

[0057] Figure 43 is a side sectional view of the twenty-first embodiment of the present application.

[0058] Figure 44 is a front sectional view of the twenty-first embodiment of the present application.

[0059] Figure 45 is a side sectional view of the twenty-second embodiment of the present application.

[0060] Figure 46 is a front view of the twenty-second embodiment of the present application.

[0061] Figure 47 is a side sectional view of the twenty-third embodiment of the present application.

[0062] Figure 48 is a perspective view of the connecting plate of the twenty-third embodiment of the present application.

[0063] Figure 49 is a perspective assembly view of the twenty-fourth embodiment of the present application.

[0064] Figure 50 is a perspective assembly view of the twenty-fifth embodiment of the present application.

[0065] Figure 51 is a perspective assembly view of the twenty-sixth embodiment of the present application.

[0066] Figure 52 is a side sectional view of the twenty-seventh embodiment of the present application.

[0067] Figure 53 is a side sectional view of the twenty-eighth embodiment of the present application.

[0068] Figure 54 is a side sectional view of the twenty-ninth embodiment of the present application.

[0069] Figure 55 is a side sectional view of the thirtieth embodiment of the present application.

[0070] Figure 56 is a perspective assembly view of the thirty-first embodiment of the present application.

[0071] Figure 57is a front elevational view of the thirty-first embodiment of the present invention.

[0072] Figure 58 is an assembled perspective view of the thirty-second embodiment of the present invention.

[0073] Figure 59 is an assembled perspective view of the thirty-third embodiment of the present invention.

[0074] Figure 60 is a top view of the thirty-fourth embodiment of the present invention.

[0075] Figure 61 is a side sectional view of the thirty-fourth embodiment of the present invention.

[0076] Figure 62 is a front sectional view of the thirty-fourth embodiment of the present invention.

[0077] Figure 63 is a perspective view of the thirty-fourth embodiment of the present invention.

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

[0079] Figure 64 is a perspective view of the thirty-fifth embodiment of the present invention.

[0080] Figure 65 is a side sectional view of the thirty-sixth embodiment of the present invention.

[0081] Figure 66 is a side sectional view of the thirty-seventh embodiment of the present invention.

[0082] Figure 67 is a side sectional view of the thirty-eighth embodiment of the present invention.

[0083] Figure 68 is a front sectional view of the thirty-eighth embodiment of the present invention.

[0084] Figure 69 is a top view of the thirty-ninth embodiment of the present invention.

[0085] Figure 70 is a side sectional view of the thirty-ninth embodiment of the present invention.

[0086] Figure 71 is a front sectional view of the thirty-ninth embodiment of the present invention.

[0087] Figure 72 is a top view of the fortieth embodiment of the present invention.

[0088] Figure 73 is a side sectional view of the fortieth embodiment of the present invention.

[0089] Figure 74 is a front view cross-sectional view of a forty-first embodiment of the present application.

[0090] Figure 75 is a top view of a forty-first embodiment of the present application.

[0091] Figure 76 is a side view cross-sectional view of a forty-first embodiment of the present application.

[0092] Figure 77 is a front view of a forty-first embodiment of the present application.

[0093] Figure 78 is a side view cross-sectional view of a forty-second embodiment of the present application.

[0094] Figure 79 is a side view cross-sectional view of a forty-third embodiment of the present application.

[0095] Figure 80 is a side view cross-sectional view of a forty-fourth embodiment of the present application.

[0096] Figure 81 is a top view of a forty-fifth embodiment of the present application.

[0097] Figure 82 is a side view cross-sectional view of a forty-fifth embodiment of the present application.

[0098] Figure 83 is a front view cross-sectional view of a forty-fifth embodiment of the present application.

[0099] Figure 84 is a perspective view (outer cover removed) of a forty-sixth embodiment of the present application.

[0100] Figure 85 is a perspective view of a forty-sixth embodiment of the present application.

[0101] Figure 86 is a side view cross-sectional view of a forty-seventh embodiment of the present application.

[0102] Figure 87 is a perspective view of a forty-eighth embodiment of the present application.

[0103] Figure 88 is a side view cross-sectional view of a forty-eighth embodiment of the present application.

[0104] Figure 89 is a side view cross-sectional view of a forty-ninth embodiment of the present application.

[0105] Figure 90 is a rear view cross-sectional view of a forty-ninth embodiment of the present application.

[0106] Figure 91 is a rear view of a fiftieth embodiment of the present application.

[0107] Figure 92 is a rear view of a fifty-first embodiment of the application.

[0108] Figure 93 is a rear view of a fifty-second embodiment of the application.

[0109] Figure 94 is a side cross-sectional view of a fifty-third embodiment of the application.

[0110] Figure 95 is a rear view of a fifty-third embodiment of the application.

[0111] Figure 96 is a side cross-sectional view of a fifty-fourth embodiment of the application.

[0112] Figure 97 is a rear view of a fifty-fourth embodiment of the application.

[0113] Figure 98 is a side cross-sectional view of a fifty-fifth embodiment of the application.

[0114] Figure 99 is a rear view of a fifty-fifth embodiment of the application.

[0115] Figure 100 is a rear view of a fifty-sixth embodiment of the application.

[0116] Figure 101 is a rear view of a fifty-seventh embodiment of the application.

[0117] Figure 102 is a rear view of a fifty-eighth embodiment of the application.

[0118] Figure 103 is a rear view of a fifty-ninth embodiment of the application.

[0119] Figure 104 is a side cross-sectional view of a sixtieth embodiment of the application.

[0120] Figure 105 is a front cross-sectional view of a sixtieth embodiment of the application.

[0121] Figure 106 is a perspective assembly view of a sixtieth embodiment of the application.

[0122] Figure 107 is a bottom perspective view of a sixtieth embodiment of the application.

[0123] Figure 108 is a perspective assembly view of a sixty-first embodiment of the application.

[0124] Figure 109 is a perspective assembly view of a sixty-second embodiment of the application.

[0125] Figure 110 is a perspective exploded view of a sixty-third embodiment of the present invention.

[0126] Figure 111 is a front perspective exploded view of a sixty-fourth embodiment of the present invention.

[0127] Figure 112 is a back perspective exploded view of a sixty-fourth embodiment of the present invention.

[0128] Figure 113 is a front perspective exploded view of a sixty-fourth embodiment of the present invention after sealing.

[0129] Figure 114 is a front perspective assembled view of a sixty-fourth embodiment of the present invention after sealing.

[0130] Figure 115 is a front perspective exploded view of a sixty-fifth embodiment of the present invention after sealing.

[0131] Figure 116 is a front perspective assembled view of a sixty-fifth embodiment of the present invention after sealing. DETAILED DESCRIPTION

[0132] Referring to Figure 5 , Figure 6 , and Figure 7 , a first embodiment of the present invention is a USB 2.0 specification flash disk that can be electrically connected to a female connector on both sides, which includes an outer cover 30, a circuit board 40, a connecting plate 55, an electronic unit 4, and a limiting structure 50, wherein:

[0133] 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 cavity 33.

[0134] The circuit board 40 is placed in the cavity 33 of the outer cover 30. 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. Therefore, the connecting plate 55 is directly in contact with and fixed to the outer cover 30. Each of the two plate surfaces (upper and lower plate surfaces) of the connecting plate 55 has a row 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 both 4, which can transmit 1. VCC (power supply), 2. USB D- (signal), 3. USB D+ (signal), and 4. GND (ground) circuits, respectively. The two rows of first contacts 41 have the same connection interface and the circuit numbers are arranged in reverse order, such as Figure 7As shown, the circuit numbers of the first contact points 41 on the upper surface of the connecting plate 55 from right to left are a1, a2, a3, and a4, and the circuit numbers of the first contact points 41 on the lower surface of the connecting plate 55 from right to left are b4, b3, b2, and b1. In addition, the connecting plate 55 is symmetrical in shape, so it can be positioned in a female connector in either orientation.

[0135] The outer cover 30 and the connecting plate 55 are combined into a mating structure, and the following second embodiment to the sixty-fifth embodiment are also combined into a mating structure, that is, the connecting plate 55 is part of the mating structure.

[0136] Please refer to Figure 8 The first contact points 41 with the same circuit numbers in the two rows are electrically connected in series to form a group, that is, 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 contact points and must not be short-circuited, so a1 and b1 are electrically connected to each other through a Schottky diode 46. The Schottky diode 46 mainly prevents reverse current, so as to achieve the effect of preventing short circuit.

[0137] The above-mentioned use of Schottky diode to prevent short circuit is one way of electronic circuit safety protection means, but there are also many ways such as setting reverse current protection electronic components or short circuit protection electronic components or circuit safety protection components or safety circuit setting means, so as to achieve the effect of circuit safety protection.

[0138] The electronic unit 4 is a storage unit electrically connected to the circuit board 40 and covered by the outer cover 30, which includes a memory 43 and a control circuit 45. The memory 43 can be but not limited to a flash memory or a read-only memory (ROM), and 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 contact points 41 are electrically connected to the electronic unit 4.

[0139] The limiting structure 50 is integrally formed with the outer cover 30. The limiting structure 50 forms four front and back direction ribs on the two surfaces of the connecting plate 55 respectively. The limiting structure 50 protrudes from the first contact points 41 on the two surfaces of the connecting plate 55 to protect the two rows of first contact points 41 and prevent short circuit. The connecting plate 55 is provided with two through holes 42 matched with the two middle ribs of the limiting structure 50.

[0140] Please refer to Figure 9, by the above configuration, when the USB flash disk 3 is inserted into the electric connection female seat 20, since the shape of the connection plate can be positively and negatively double-sidedly connected and positioned in the electric connection female seat 20, and the two plate surfaces of the connection plate are provided with the same connection interface and the circuit serial numbers of the two rows of first contacts 41 are reversely arranged, therefore, the user can position and electrically connect by inserting any plate surface into the connection groove 21 of the electric connection female seat 20. As shown in the figure, when one row of first contacts a1, a2, a3, a4 is electrically connected with one row of contacts 23 of the electric connection female seat 20, the spring sheet 24 of the electric connection female seat 20 is pressed against the limiting structure 50 of the other plate surface, so as not to touch the first contacts b1, b4 to cause short circuit. Furthermore, since the first contact b1 is electrically connected with the Schottky diode 46, the current cannot flow reversely to the first contact b1, so as to further ensure that the power contact, i.e. the first contact b1, will not be short-circuited.

[0141] In addition, the present embodiment can further include a control means combined with the USB 2.0 specification USB flash disk, so as to perform data storage and control program on the storage unit.

[0142] The outer cover 30 of the above embodiment is a plastic shell, the electronic unit 4 is welded on the circuit board, the outer cover 30 covers the circuit board 40 and the electronic unit 4. However, in order to make the overall USB flash disk thinner, the memory and control circuit of the electronic unit 4 can also be packaged in the chip on board (Chip On Board, COB for short) way on the circuit board 40. In this way, the electronic unit 4 is also electrically connected to the circuit board and is covered by an outer cover packaging, and the COB way still belongs to the scope of the present application.

[0143] Please refer to Figure 10 and Figure 11 , which is the second embodiment of the present application, which is basically the same as the first embodiment, the difference is that the limiting structure 50 of the present embodiment is a metal layer, which is plated on both sides of the two plate surfaces of the connection plate 55.

[0144] Please refer to Figure 12 and Figure 13 , which is the third embodiment of the present application, which is basically the same as the second embodiment, the difference is that the two plate surfaces of the connection plate 55 of the present embodiment are completely not provided with limiting structure, in order to ensure that there is no short circuit, one row of first contacts a1, a2, a3, a4 and one row of first contacts b1, b2, b3, b4 are respectively electrically connected with a Schottky diode 46, so as to prevent the current from flowing reversely, and achieve the effect of preventing short circuit.

[0145] Please refer to Figure 14 and Figure 15The fourth embodiment of the present application is basically the same as the first embodiment. The fourth 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 the connecting plate 55 is integrally formed with the outer cover 30. The connecting plate 55 has four first terminals 60 and a detection structure 80. Each first terminal 60 has first contacts 62 and 63 respectively attached to two plate 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 above and below the connecting plate 55. When the USB flash drive of the fourth embodiment is inserted into an electrical connection female socket for electrical connection, if the row of first contacts 62 is electrically connected to the electrical connection female socket, the movable terminal 81 is pressed and conducts with the fixed terminal 83 to complete detection. Thus, the control circuit knows that the row of first contacts 62 is electrically connected and transmits corresponding circuit signals. Conversely, when the USB flash drive is inserted into the electrical connection female socket for electrical connection with the reverse side, if the row of first contacts 63 is electrically connected to the electrical connection female socket, the movable terminal 82 is pressed and conducts with the fixed terminal 83 to complete detection. Thus, the control circuit knows that the row of first contacts 63 is electrically connected and transmits corresponding circuit signals.

[0146] Please refer to Figure 16 The fifth embodiment of the present application is a USB 3.0 specification flash drive. The fifth embodiment is basically the same as the first embodiment. The fifth 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 the fifth embodiment has two rows of five second terminals 70. Each second terminal 70 has a springable 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 71 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 two plate surfaces of the connecting plate 55 and are located behind the two rows of first contacts 41. The second contacts 72 can be springed up and down with the extensions 71.

[0147] Please refer to Figure 17 and Figure 18 The sixth embodiment of the present application is a USB 3.0 specification flash drive that can be electrically connected to an electrical connection female socket with the front and back sides. The sixth embodiment 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. Among them:

[0148] 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 compartment 33.

[0149] The circuit board 40 is disposed in the accommodating chamber 33 of the outer cover 30, and the circuit board 40 is covered by the outer cover 30.

[0150] The connecting plate 55 is integrally formed at the front end of the outer cover 30, and the connecting plate 55 is oppositely connected to the female electric connector. The connecting plate 55 has four concave surfaces 57 on the upper and lower surfaces, and five through holes 56 are disposed behind the concave surfaces 57.

[0151] The electronic unit 4 is a storage unit electrically connected to the circuit board 40 and covered by the outer cover 30. The electronic unit 4 includes a memory 43 and a control circuit 45. The capacity of the memory 43 is not limited, and the control circuit 45 controls the operation of the memory 43 of the electronic unit.

[0152] Each of the two rows of first terminals 60 is four, and the first terminal 60 has a non-elastic extension 61. One end of the extension 61 extends to the connecting plate 55 and has a first contact point 62 flatly disposed on the concave surface 57. The first contact point 62 is a flat contact point, and the two sides of the two rows of first contact points 62 are longer. The two rows of first contact points 62 are only flatly disposed on the two front end surfaces of the upper and lower surfaces of the connecting plate 55. The other end of the extension 61 has a pin soldered to the circuit board 40 to be electrically connected to the electronic unit 4. The two rows of first contact points 62 are respectively flatly disposed on the concave surfaces 57 of the two surfaces of the connecting plate 55.

[0153] Each of the two rows of second terminals 70 is five, and the second terminal 70 has an elastic extension 71. One end of the extension extends to the connecting plate 55 and has a protruding second contact point 72. The other end of the extension has a pin soldered to the circuit board 40 to be electrically connected to the electronic unit 4. The two rows of second contact points 72 are respectively protruded from the two surfaces of the connecting plate 55 and located behind the two rows of first contact points 62. The second contact point 72 can be elastically moved up and down with the extension 71.

[0154] According to the USB 3.0 connection interface standard of the USB Association, the front four first contact points are respectively 1. VBUS (power), 2. USB D- (signal), 3. USB D+ (signal), and 4. GND (ground) circuits. The rear five second contact points are respectively 5. RX- (signal), 6. RX+ (signal), 7. GND (ground), 8. TX- (signal), and 9. TX+ (signal) circuits. This is a supplement to the USB Association standard.

[0155] The first and second contact points 62 and 72 of the second row are the same connection interface and the circuit numbers are arranged reversely, wherein a7 and b7 are the same signals and are aligned up and down. Although no limiting structure is provided in the embodiment, a circuit safety protection means for preventing reverse current or short circuit can be provided. There are various ways, such as Schottky diode, reverse current protection electronic element, short circuit protection electronic element, circuit safety protection element, and safety circuit setting means, to achieve the circuit safety protection effect.

[0156] Referring to Figure 19 The seventh embodiment is basically the same as the sixth embodiment, and the difference is that the limiting structure 50 is provided on the two surfaces of the connection plate 55.

[0157] Referring to Figure 20 and Figure 21 The eighth embodiment is basically the same as the fifth embodiment, and the difference is that the electronic unit is further provided with a memory 44. The connection interface on one surface of the connection plate 55 is electrically connected to the memory 43, which is the same interface as the fifth embodiment, and is the USB3.0 connection interface. The other surface of the connection plate 55 is provided with a row of nine first contact points 41, which is the miCard connection interface, and the row of nine first contact points 41 is electrically connected to the memory 44.

[0158] Referring to Figure 22The ninth embodiment of the present application is a USB3.0 specification flash disk, which is basically the same as the seventh embodiment. The embodiment also has an outer covering body 30, a circuit board 40, a connecting plate 55, an electronic unit 4, two rows of first terminals 60 and second terminals 70, and a limiting structure. The difference is that the embodiment adds a detection structure, which includes two movable terminals and two contacts. The two movable terminals are terminals in the two rows of second terminals 70, and the two contacts are contacts 417 and 418 arranged on the two surfaces of the circuit board 40. The contacts 417 and 418 are electrically connected to the control circuit 45. The control circuit 45 of the electronic unit 4 includes a safety circuit setting means. In use, when the flash disk is inserted into the electrical connection female socket in the front, 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 connection female socket, one of the second terminals 70 is in conduction with the contact 417 to complete the detection. Therefore, the control circuit 45 knows that 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 connection female socket, and can make appropriate circuit safety protection to prevent one row of first terminals 60 and one row of second terminals 70 on the lower surface of the connecting plate 55 from causing short circuit. Conversely, when the flash disk is inserted into the electrical connection female socket in the back, when one row of first terminals 60 and one row of second terminals 70 on the lower surface of the connecting plate 55 are electrically connected to the electrical connection female socket, one of the second terminals 70 is in conduction with the contact 418 to complete the detection. Therefore, the control circuit 45 knows that one row of first terminals 60 and one row of second terminals 70 on the lower surface of the connecting plate 55 are electrically connected to the electrical connection female socket, and can make appropriate circuit safety protection to prevent one row of first terminals 60 and one row of second terminals 70 on the upper surface of the connecting plate 55 from causing short circuit.

[0159] Please refer to Figure 23 The tenth embodiment of the present application is a USB3.0 specification flash disk, which is basically the same as the ninth embodiment. The difference is that the embodiment only has one row of first terminals 60. Each first terminal 60 has first contacts 62 and 63 arranged on the two surfaces of the connecting plate 55.

[0160] Please refer to Figure 24 The eleventh embodiment of the present application is a USB3.0 specification flash disk, which is basically the same as the ninth embodiment. The difference is that the electronic unit 4 of the embodiment includes another memory 44 in addition to a memory 43 and a control circuit 45. The first contacts of one row of first terminals 60 and the second contacts of one row of second terminals 70 on one surface of the connecting plate 55 are electrically connected to the memory 43, and the first contacts of one row of first terminals 60 and the second contacts of one row of second terminals 70 on the other surface of the connecting plate 55 are electrically connected to the memory 44.

[0161] Please refer to Figure 25 , Figure 26 andFigure 27 is the twelfth embodiment of the present application, which is a USB 2.0 specification flash disk, and is substantially the same as the first and second embodiments, with the difference being that the electronic unit 4 of the present embodiment further comprises another memory 44 (B) in addition to the memory 43 (A) and the control circuit 45, and a switching switch device 90 is further provided, which is provided with a sliding knob 91 and a sliding groove 92 on the outer cover 30, and the sliding knob 91 can be slid in the sliding groove 92 to switch between positions A, B and C, as shown in the figure. The inner surface of the sliding knob 91 is provided with two rows of conductive parts 93, each of which is four, and the control circuit 45 is provided with an IC control chip 47, the two rows of first contacts 41 are the same connection interface and the circuit serial numbers are arranged in reverse to each other, and the same circuit serial numbers are electrically connected to form a group and then electrically connected to the IC control chip 47. The IC control chip 47 is respectively electrically connected to the memory A and the memory B by four circuits 49, and each of the circuits 49 is provided with a pair of separated contacts 48. The four pairs of contacts 48 of the four circuits electrically connected to the memory A are arranged in a row, and the four pairs of contacts 48 of the four circuits electrically connected to the memory B are also arranged in a row. The two rows of conductive parts 93 of the sliding knob 91 can be single-connected to the four pairs of contacts 48 of the four circuits electrically connected to the memory A, or single-connected to the four pairs of contacts 48 of the four circuits electrically connected to the memory B, or simultaneously connected to the four pairs of contacts 48 of the four circuits electrically connected to the memory A and the four pairs of contacts 48 of the four circuits electrically connected to the memory B. Figure 28

[0162] Please refer to Figure 28 When the sliding knob 91 is switched to the A position, one row of conductive parts 93 of the sliding knob 91 is single-connected to the four pairs of contacts 48 of the four circuits electrically connected to the memory A, at which time the memory A can be electrically connected on both sides. The control circuit 45 only operates on the memory A, and the memory B is in an open circuit state at this time to prevent reading and writing; please refer to Figure 29 When the sliding knob 91 is switched to the B position, one row of conductive parts 93 of the sliding knob 91 is single-connected to the four pairs of contacts 48 of the four circuits electrically connected to the memory B, at which time the memory B can be electrically connected on both sides. The control circuit 45 only operates on the memory B, and the memory A is in an open circuit state at this time to prevent reading and writing; please refer to Figure 30 When the sliding knob 91 is switched to the C position, the two rows of conductive parts 93 of the sliding knob 91 are simultaneously connected to the four pairs of contacts 48 of the four circuits electrically connected to the memory A and the four pairs of contacts 48 of the four circuits electrically connected to the memory B, at which time the memories A and B can be electrically connected on both sides. The control circuit 45 simultaneously operates on the memories A and B.

[0163] Please refer to Figure 31 ​The thirteenth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the twelfth embodiment, except that the control circuit 45 of the present embodiment is provided with two IC control chips 47, one IC control chip 47 being electrically connected to the memory A and a row of first contacts a1, a2, a3, a4, and the other IC control chip 47 being electrically connected to the memory B and a row of first contacts b1, b2, b3, b4.

[0164] Referring to Figure 32 The fourteenth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the twelfth embodiment, except that the control circuit 45 of the present embodiment is provided with two IC control chips 47, one IC control chip 47 being electrically connected to the memory A, and the other IC control chip 47 being electrically connected to the memory B.

[0165] Referring to Figure 33 and Figure 34 The fifteenth embodiment of the present application is a secure digital card (SDC), which can be electrically connected to a female connector on both sides, and which comprises an outer cover 30, a circuit board 40, a connecting plate 55, a limiting structure 50, and an electronic unit 4, wherein:

[0166] The outer cover 30 is made of plastic.

[0167] The connecting plate 55 is integrally formed at the front end of the outer cover 30, and the connecting plate 55 is left-right symmetrical in shape, so that it can be positioned on both sides of the female connector.

[0168] The circuit board 40 is covered by the outer cover 30, and the front end of the circuit board 40 extends to the connecting plate 55. Each of the two board surfaces of the front end of the circuit board 40 is provided with a row of first contacts 41, which are shown in a mesh line. The two rows of first contacts 41 are exposed on the two board surfaces of the connecting plate 55. The two rows of first contacts 41 are each 9 identical connection interfaces and the circuit numbers are arranged in reverse to each other. In addition, the connecting plate 55 is symmetrical in shape on both sides, so that it can be positioned on both sides of a female connector.

[0169] The electronic unit 4 is a storage unit, which is electrically connected to the circuit board 40 and covered by the outer cover 30. The two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0170] 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 board surfaces of the connecting plate 55 and is protruded relative to the two rows of first contacts 41, so as to prevent the two rows of first contacts 41 from being scratched and short-circuited.

[0171] Through the above structure, the SDC can be positioned and electrically connected on both sides of the connecting slot of a female connector.

[0172] In addition, other memory cards such as miCard, micro SDC, mini SDC, Memory Stick Card (MSC), Memory Stick Duo Card (MS-Dou C), and the like can be implemented as the fifteenth embodiment.

[0173] Referring to Figure 35 The sixteenth embodiment of the present application is substantially the same as the seventh embodiment, except that the two rows of first contacts 62 on the two surfaces of the connecting plate 55 are different connection interfaces, and the limiting structures 50 on the two surfaces of the connecting plate 55 are staggered up and down.

[0174] Referring to Figure 36 and Figure 37 The seventeenth embodiment of the present application is an IC chip card (smart card), which can be electrically connected to an electrical connection socket on both sides, and includes an outer cover, a connecting plate, and an electronic unit 4, wherein:

[0175] The outer cover and the connecting plate are integrally formed in a sheet shape by a plastic material, and the front part of the connecting plate 55 is shaped to be positioned on both sides of an electrical connection socket. The two surfaces of the connecting plate 55 are each provided with the same connection interface, and the circuit numbers of the two rows of first contacts 62 and the two rows of second contacts 72 are arranged in reverse order. The two rows of second contacts 72 are located behind the two rows of first contacts 62.

[0176] The electronic unit 4 is an IC chip, which is arranged in the connecting plate 55, and the two rows of first contacts 62 and the two rows of second contacts 72 are electrically connected to the electronic unit 4.

[0177] Through the above structure, the IC chip card can be positioned and electrically connected on both sides of an electrical connection socket.

[0178] Referring to Figure 38 , Figure 39 and Figure 39A The eighteenth embodiment of the present application is a USB 2.0 specification electrical connection line, which can be electrically connected to an electrical connection socket on both sides, and includes an outer cover 30, an electronic unit 4, a connecting plate 55, and two rows of first terminals 60 and an electronic unit 4, wherein:

[0179] The outer cover 30 is made of a plastic material.

[0180] The connecting plate 55 is integrally formed at the front end of the outer cover 30.

[0181] The electronic unit 4 is a group of four wires 419, which is covered by the outer cover 30.

[0182] The first terminals 60 are fixed to the outer cover 30, and each of the four first terminals 60 can transmit signals such as VCC, USB D-, USB D+, and GND. The first terminals 60 are provided with non-elastic extension portions, one end of each of which extends to the connecting plate 55 and is provided with a first contact point 62 which is attached to one surface of the connecting plate 55. The other end of each of the extension portions is electrically connected to a wire of the electronic unit 4. The two rows of first contact points 62 are attached to two surfaces of the connecting plate 55, respectively. The two rows of first contact points 62 have the same connection interface and the circuit numbers are arranged in reverse order. The two rows of first contact points 41 have the same circuit number, i.e., the same signal circuit. For example, the first contact points 41 in the upper and lower rows are both power supply circuits, the first contact points 41 in the upper and lower rows are both ground circuits, and Figure 39A As shown in the figure, the circuit numbers on the front surface are arranged from right to left as 1, 2, 3, and 4, and the circuit numbers on the back surface are arranged from right to left as 4, 3, 2, and 1. The two rows of first contact points 62 have the same signal circuit and are electrically connected to the same wire of the electronic unit 4.

[0183] Through the above structure, the electric connection line can be positioned and electrically connected to the connecting slot of the electric connection female seat on the front and back surfaces, and the other end of the electric connection line can be electrically connected to various electronic devices such as a keyboard, a mouse, an LED lamp, a fan, an adapter, and the like.

[0184] Please refer to Figure 40 and Figure 41 which are the nineteenth embodiment of the present application. The USB 2.0 wireless transceiver device can be electrically connected to an electric connection female seat on the front and back surfaces, and includes an outer cover 30, a circuit board 40, an electronic unit 4, a connecting plate 55, and a limiting structure 50, wherein:

[0185] The outer cover 30 is made of plastic.

[0186] The connecting plate 55 is integrally formed at the front end of the outer cover 30.

[0187] 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, i.e., the connecting plate 55. Two rows of first contact points 41 are arranged on the two surfaces of the connecting plate 55. The two rows of first contact points 41 are formed on the circuit board 40, and each of the four first contact points 41 has the same connection interface and the circuit numbers are arranged in reverse order.

[0188] The electronic unit 4 is a wireless transceiver module which is electrically connected to the circuit board 40 and covered by the outer cover 30. The electronic unit 4 can wirelessly transmit and receive electronic signals. The two rows of first contact points 41 are electrically connected to the electronic unit 4.

[0189] The limiting structure 50 is a metal layer plated on both sides of the two plate surfaces of the connecting plate 55 by electroplating. The limiting structure 50 protects the two rows of first contacts 41 on the connecting plate 55 from being scratched.

[0190] By the above structure, the wireless transceiver device can be positioned and electrically connected in the connecting slot of the female electrical connector from both sides.

[0191] The wireless transceiver device of the embodiment can be a wireless network card, a Bluetooth receiver, a 2.4G wireless transmission receiver (such as a wireless mouse transceiver), and the like.

[0192] Please refer to Figure 42 The twentieth embodiment of the application is a USB 3.0 specification adapter connector that can electrically connect a female electrical connector from both sides. The adapter connector 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:

[0193] The outer cover 30 is made of plastic.

[0194] The connecting plate 55 is a plastic plate that is fixed to the front end of the outer cover 30. The back end of the connecting plate 55 is integrally formed with a fixing seat 59 inside the outer cover 30. The connecting plate 55 is exposed outside the outer cover 30.

[0195] The circuit board 40 is arranged inside the outer cover 30.

[0196] The electronic unit 4 is a USB 3.0 specification male electrical connector and an adapter circuit. Part of the electronic unit 4 is covered by the outer cover 30 and is electrically connected to the circuit board 40.

[0197] The two rows of first terminals 60 are fixed to the outer cover 30. Each of the two rows of first terminals 60 has four first terminals 60. The first terminals 60 are provided with non-poppable extension portions. One end of the extension portions extends to the connecting plate 55 and is provided with a first contact 62 that is flatly arranged on one plate surface of the connecting plate 55. The other end of the extension portions is welded to the circuit board 40 and is electrically connected to the electronic unit 4. The two rows of first contacts 62 are respectively flatly arranged on the two plate surfaces of the connecting plate 55.

[0198] Each of the two rows of second terminals 70 has five second terminals 70. The second terminals 70 are provided with a poppable extension portion. One end of the extension portion extends to the connecting plate 55 and is provided with a protruding second contact 72. The other end of the extension portion is welded to the circuit board 40 and is electrically connected to the electronic unit 4. The two rows of second contacts 72 are respectively protruding from the two plate surfaces of the connecting plate 55 and are located behind the two rows of first contacts 62. The second contacts 72 can be popped up and down with the extension portions 71.

[0199] The first and second contact points of the second row are identical connection interfaces and the circuit numbers are arranged reversely.

[0200] By the above structure, the adapter electrical connector can be positioned and electrically connected by inserting the connection plate 55 into the connection slot of an electrical connection socket.

[0201] Referring to Figure 43 and Figure 44 , the twenty-first embodiment of the present application is an adapter electrical connector with double connection interfaces, which comprises an outer cover 30, a circuit board 40, a connection plate 55, an electronic unit 4 and a limiting structure 50, wherein:

[0202] The outer cover 30 is made of plastic.

[0203] The rear section of the circuit board 40 is fixed in the outer cover 30, and the front section of the circuit board 40 is exposed outside the outer cover 30, which is the connection plate 55. The two plate surfaces of the connection plate 55 are provided with two rows of first contact points 41, which are circuit contact points formed on the circuit board 40. The two rows of first contact points 41 are different connection interfaces. In addition, the connection plate 55 is symmetrical in shape, so it can be positioned and connected to an electrical connection socket in both directions.

[0204] The electronic unit 4 is a USB2.0 specification electrical connection socket and an adapter circuit, which is arranged in the outer cover 30 and electrically connected to the circuit board 40. The two rows of first contact points 41 are electrically connected to the electronic unit 4.

[0205] By the above structure, the adapter electrical connector can be electrically connected by inserting the connection plate 55 into the connection slot of an electrical connection socket with different connection interfaces.

[0206] Referring to Figure 45 and Figure 46 , the twenty-second embodiment of the present application is a USB2.0 specification adapter electrical connector, which is basically the same as the twenty-first embodiment, except that the two rows of first contact points 41 of the present embodiment are all four identical connection interfaces and the circuit numbers are arranged reversely. Figure 46 As shown in the figure, the electronic unit 4 is a double connection interface electrical connection socket and an adapter circuit, which is arranged in the outer cover 30 and electrically connected to the circuit board 40. The two rows of first contact points 41 are electrically connected to the electronic unit 4.

[0207] Referring to Figure 47 and Figure 48The twenty-third embodiment of the present application is a USB3.0 specification adapter electrical connector, which is substantially the same as the twentieth embodiment, except that the electronic unit 4 of the present embodiment is a double-sided electrical connection male connector and an adapter circuit, the top surface and the bottom surface 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 sequence numbers are reversely arranged with each other, the two connection interfaces of the electrical connection structure are electrically connected to the adapter circuit, and the front end of the connection slot 410 is an insertion opening; in addition, the upper and lower surfaces of the connection plate 55 are provided with protruding limiting structures 50.

[0208] Please refer to Figure 49 The twenty-fourth embodiment of the present application is a USB2.0 specification USB flash disk, which is substantially the same as the first embodiment, except that the connection plate 55 and the limiting structure 50 of the present embodiment are integrally formed by plastic, the upper and lower surfaces of the connection 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 are the same connection interface and the circuit sequence numbers are reversely arranged with each other, the outer cover 30 is a metal shell, the outer cover 30 covers the periphery of the connection plate 55 so that only the upper and lower surfaces are exposed, and the outer cover 30 on both sides of the connection plate 55 is provided with a positioning recess 35, which can be clamped with a female seat when the USB flash disk is inserted into the female seat.

[0209] The two rows of first terminals 60 can be embedded and positioned in the connection plate 55 or assembled and positioned in the connection plate 55.

[0210] Please refer to Figure 50 The twenty-fifth embodiment of the present application is a USB2.0 specification USB flash disk, which is substantially the same as the twenty-fourth embodiment, except that the positioning recess 35 of the present embodiment is slightly different.

[0211] Please refer to Figure 51 The twenty-sixth embodiment of the present application is a USB2.0 specification USB flash disk, which is substantially the same as the twenty-fourth embodiment, except that the outer cover 30 on both sides of the connection plate 55 of the present embodiment is provided with a positioning spring 36, which can be clamped with a female seat when the USB flash disk is inserted into the female seat.

[0212] Please refer to Figure 52The USB flash disk of the twenty-seventh embodiment of the present application is similar to the first embodiment, except that the connecting plate 55 and the limiting structure 50 are integrally formed of plastic, the circuit board 40 is thinner, the rear end of the connecting plate 55 is provided with a socket slot 52 for inserting and clamping one end of the circuit board 40, the upper and lower surfaces of the connecting plate 55 are each provided with a row of four first contacts 62, the two rows of first contacts 62 form two rows of first terminals 60, the two rows of first contacts 62 are of the same connection interface and the circuit sequence numbers are arranged in reverse directions, the two rows of first contacts 62 are electrically connected to the circuit board 40, the electronic unit 4 is a storage unit electrically connected to the circuit board 40 and covered by the outer cover 30, and the electronic unit 4 includes a memory 43 and a control circuit 45, the control circuit 45 controls the operation of the memory 43 of the electronic unit, and the two rows of first contacts 62 are electrically connected to the electronic unit 4.

[0213] Through the above structure, the circuit board 40 can adopt a thinner board, when the thickness of the outer cover 30 is substantially the same as the thickness of the connecting plate 55, there is still enough space for arranging the electronic unit 4 on the circuit board 40 in the outer cover 30.

[0214] Please refer to Figure 53 The USB flash disk of the twenty-eighth embodiment of the present application is similar to the first embodiment, except that the circuit board 40 is thinner, the upper and lower surfaces of the front section of the circuit board 40 are respectively overlapped with an upper and a lower circuit board 422, 423, the overlapped upper circuit board 422, the circuit board 40 and the lower circuit board 422 extend out of the front end of the outer cover 30 to form the connecting plate 55, the upper and lower circuit boards 422, 423 are each provided with a row of four first contacts 41, the two rows of first contacts 41 are of the same connection interface and the circuit sequence numbers are arranged in reverse directions, the two rows of first contacts 41 are electrically connected to the circuit board 40 through the conductive portions 420 penetrating the connecting plate 55, the conductive portions 420 are formed by drilling and filling tin, the electronic unit 4 is a storage unit electrically connected to the circuit board 40 and covered by the outer cover 30, and the electronic unit 4 includes a memory 43 and a control circuit 45, the control circuit 45 controls the operation of the memory 43 of the electronic unit, and the two rows of first contacts 41 are electrically connected to the electronic unit 4.

[0215] Please refer to Figure 54, the USB2.0 specification, which is substantially the same as the twenty-eighth embodiment, the difference being that the front end of the circuit board 40 of the present embodiment is laminated with a plastic plate 37 and a lower circuit board 422, the laminated circuit board 40, plastic plate 37 and lower circuit board 422 extending out of the front end of the outer cover 30 to form the connecting plate 55, in addition, the conductive portion 420 is formed by drilling and inserting a terminal and welding.

[0216] Referring to Figure 55 , the USB2.0 specification, which is substantially the same as the twenty-eighth embodiment, the difference being that the front end of the circuit board 40 of the present embodiment is laminated with a plastic plate 37 and a lower circuit board 422, the laminated circuit board 40, plastic plate 37 and lower circuit board 422 extending out of the front end of the outer cover 30 to form the connecting plate 55, in addition, the conductive portion 420 is formed by drilling and inserting a terminal and welding.

[0217] Referring to Figure 56 and Figure 57 , the USB2.0 specification, which is substantially the same as the twenty-eighth embodiment, the difference being that the front end of the circuit board 40 of the present embodiment is laminated with a plastic plate 37 and a lower circuit board 422, the laminated circuit board 40, plastic plate 37 and lower circuit board 422 extending out of the front end of the outer cover 30 to form the connecting plate 55, in addition, the conductive portion 420 is formed by drilling and inserting a terminal and welding.

[0218] The front edge, left and right side edges, front and rear sections of the connecting plate 55 of the present embodiment are covered with a pair of mating metal shells 38, the height of the mating metal shells 38 being higher than the height of the two rows of first contacts 62, each side plate of the mating metal shells 38 being provided with a positioning groove 35, when the electrical connecting line is inserted into a female socket, the positioning groove 35 can be clamped with the female socket.

[0219] Referring to Figure 58 , is the thirty-second embodiment of the present application, which is a USB 2.0 specification electrical connection line, which is substantially the same as the thirty-first embodiment, the difference is that the connecting plate 55 of the present embodiment is further provided with a reinforcing plate 59 made of metal, which is a metal partition plate separating two rows of first terminals 60 and two rows of first contacts 62.

[0220] Referring to Figure 59 , is the thirty-third embodiment of the present application, which is a USB 2.0 specification electrical connection line, which is substantially the same as the thirty-second embodiment, the connecting plate 55 of the present embodiment is also provided with a reinforcing plate 59 made of metal, the difference is that the present embodiment does not have a metal shell.

[0221] The connecting plate of the present application is directly in contact with and fixed to the outer cover, which is different from the packaged electronic elements on the display card being fixed to the circuit board through pins, which is particularly declared as the difference.

[0222] Referring to Figure 60 , Figure 61 , Figure 62 , and Figure 63 , is the thirty-fourth embodiment of the present application, which is a USB 2.0 specification USB flash disk, which can be electrically connected to an electrical connection female seat on both sides, which 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:

[0223] The front surface of the circuit board 40 is provided with an insulating seat 34 to form the connecting plate 55, the connecting plate 55 of the present embodiment is a mating structure, the insulating seat 34 is provided with the row of four first terminals 60, each first terminal 60 is provided with a first contact 62 flatly attached to the upper surface of the connecting plate 55 and extends a pin 64 to be welded to the circuit board 55, the pin 64 is bent downward from the front end of the connecting plate 55 to the upper surface of the circuit board 40 to be welded in SMT mode, so as not to occupy the area of the rear surface of the circuit board 40, which is beneficial to the utilization of the rear surface of the circuit board 40, the lower surface of the front end of the circuit board 40 is provided with a row of four gold finger first contacts 41, the row of first contacts 41 forms the connecting interface of the lower surface of the connecting plate 55, the cross section of the insulating seat 34 is in the shape of M, so that there is a space 39 between the insulating seat 34 and the front end of the circuit board 40, so that the electronic elements 430 can still be arranged on the upper surface of the front end of the circuit board 40, the circuit board 40 is a thin plate, about 0.3mm to 0.5mm.

[0224] The two rows of first contacts 62, 41 are USB 2.0 connection interfaces, which can respectively transmit VCC, USB D-, USB D+, and GND signals, the two rows of first contacts 41 are the same connection interface and the circuit numbers are arranged in reverse to each other, such as Figure 62As 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, and 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, and b1. In addition, the connecting plate 55 is symmetrical in shape, so it can be positioned in a female connector in both directions.

[0225] The first contacts 62 and 41 with the same circuit numbers are electrically connected in series to form a group, i.e., 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. Since a1 and b1 are power contacts, they must not be short-circuited. Therefore, a1 and b1 are electrically connected through a Schottky diode 46, which mainly prevents reverse current flow, thereby achieving the effect of preventing short-circuiting.

[0226] The above-mentioned use of a Schottky diode to prevent short-circuiting is one way of an electronic circuit safety protection method. However, there are many other ways, such as setting a reverse current protection electronic component or a short-circuit protection electronic component or a circuit safety protection component or a safety circuit setting method, to achieve the effect of circuit safety protection.

[0227] The outer cover 30 and the connecting plate 55 form a connecting structure. The outer cover 30 and the insulating base 34 are integrally injection molded. The outer cover 30 covers the upper surface of the rear section of the circuit board 40. The cross section of the outer cover 30 is also in the shape of an M, so that a space 39 is formed between the outer cover 30 and the rear section of the circuit board 40.

[0228] The electronic unit 4 is a storage unit, which is electrically connected to the upper surface of the rear section of the circuit board 40 and covered by the outer cover 30. The electronic unit 4 includes a memory and a control circuit. The memory can be, but is not limited to, a flash memory or a 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 are electrically connected to the electronic unit 4.

[0229] In addition, the present embodiment can further include a control method combined with the USB 2.0 specification flash drive to perform a data storage and control program on the storage unit.

[0230] The limiting structure 50 is integrally formed with the insulating base 34. The limiting structure 50 forms a protruding rib in the front-rear direction on each side of the two surfaces of the connecting plate 55. The limiting structure 50 protrudes from the first contacts 62 and 41 on the two surfaces of the connecting plate 55 to protect the first contacts 41.

[0231] The reinforcing plate 59 is made of metal and has a cross-section in the shape of an F. The reinforcing plate 59 is extended from the connecting plate 55 to the rear section of the circuit board 40 and has a soldering plate 591 for soldering and fixing with the circuit board 40.

[0232] In addition, the insulating seat 34 can also be directly provided with a plurality of small-area soldering plates. The reinforcing effect can be achieved by soldering the soldering plates with the circuit board.

[0233] With the above structure, the present embodiment has the following advantages:

[0234] 1. The space 39 formed in the connecting plate 55 can allow electronic components 430 to be arranged on the front section of the circuit board 40.

[0235] 2. The outer cover 30 and the insulating seat 34 are integrally injection molded from plastic, which is very easy to manufacture.

[0236] 3. The electronic short-circuit prevention Schottky diode 46 and the mechanical scratch prevention and short-circuit prevention limiting structure 50 can ensure the safety of the double-sided plug-in circuit.

[0237] The manufacturing method of the present embodiment includes the following steps:

[0238] I. Providing a circuit board, which is provided on one side with two groups of serially and reversely arranged USB 2.0 connection interfaces, a group of USB 2.0 connection interface contacts, an anti-backflow or anti-short-circuit or other electronic circuit safety protection device circuit and contacts, an electronic unit circuit and contacts, and a reinforcing plate soldering area. The two groups of serially and reversely arranged connection interface circuits are electrically connected with the electronic unit circuit. The other side of the circuit board is provided with a group of USB 2.0 connection interfaces, which are gold fingers.

[0239] II. Providing an insulating seat, which is a plastic seat and is provided with a group of terminal structure USB 2.0 connection interfaces. The terminals are provided with pins. A space is formed between the lower part of the insulating seat and the circuit board, through which electronic components can be arranged. The insulating seat is provided with a reinforcing plate. The insulating seat integrally extends the length of the seat to form an outer cover. The insulating seat and the circuit are flush with each other, which completely covers the area of the circuit board where the electronic components are arranged.

[0240] III. Providing anti-backflow electronic components or anti-short-circuit electronic components or Schottky diodes or other electronic circuit safety protection devices.

[0241] IV. Providing an electronic unit, which is a storage unit and includes a memory and a control circuit.

[0242] V. Providing soldering material to be applied to the contacts of the circuit board and the soldering area of the reinforcing plate.

[0243] Six, the anti-backflow electronic components or short-circuit protection electronic components or Schottky diode or other electronic circuit safety protection device, electronic unit, and the insulating seat body are arranged and attached to the contacts of the circuit board respectively, and the insulating seat body completely covers the area of the circuit board on which the electronic components are arranged; and

[0244] Seven, the components attached to the circuit board respectively are subjected to reflow soldering processing, and the processing procedure of the simple board-type double-sided connection interface electronic device is completed.

[0245] In the manufacturing method, the series connection circuit of the two groups of USB2.0 connection interfaces of the circuit board, wherein the circuit with serial number 1 is respectively electrically connected to the anti-backflow electronic components or short-circuit protection electronic components or Schottky diode or other electronic circuit safety protection device, and the insulating seat body is provided with a short-circuit prevention protruding structure limiting the two groups of USB2.0 connection interfaces.

[0246] In addition, the electronic unit can be a wireless transceiver unit to form a wireless transceiver device, or can be a connection wire to form a male electric connection connector, or can be an adapter circuit and an electric connector to form an adapter electric connector, or can be an expansion circuit and a group of electric connection sockets to form an expansion socket, or can be a control unit to form an IC controller.

[0247] The related manufacturing method of the present application is also disclosed and described in other embodiments.

[0248] Please refer to Figure 63A The upper surface and the two side surfaces of the outer cover 30 of the thirty-fourth embodiment and the two side surfaces of the insulating seat body 34 can be provided with through holes 301, so that air convection is generated when the outer cover 30 and the insulating seat body 34 are heat-sealed to the circuit board 40 or subjected to reflow soldering processing, thereby achieving better heat-sealing effect or better reflow soldering processing.

[0249] Please refer to Figure 64 The thirty-fifth embodiment of the present application is a USB2.0 specification flash disk, which is basically the same as the thirty-fourth embodiment, and the difference is that the circuit board 40 of the present embodiment is thicker, about 0.8mm to 1.1mm.

[0250] Please refer to Figure 65 The thirty-sixth embodiment of the present application is a USB2.0 specification flash disk, which is basically the same as the thirty-fourth embodiment, and the difference is that the pins 64 of the first row of terminals 60 of the present embodiment are bent downward from the rear end of the connection plate 55 to the upper surface of the rear section of the circuit board and are welded in SMT mode.

[0251] Please refer to Figure 66The thirty-seventh embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the thirty-sixth embodiment, except that the pins 64 of the row of first terminals 60 are soldered through the circuit board, and the outer cover 30 is an encapsulation body that encapsulates the top surface of the circuit board 40, and fills the space between the insulating seat of the connecting plate 55 and the circuit board 40 to increase strength, which is also a way of reinforcing.

[0252] Referring to Figure 67 , Figure 68 The thirty-eighth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the thirty-seventh embodiment, except that the front surface of the circuit board 40 is stacked with a second circuit board 422 to form the connecting plate 55, the row of first contacts 41 on the top surface of the connecting plate are formed on the top surface of the second circuit board and are a row of gold fingers, the row of first contacts 41 on the bottom surface of the connecting plate are formed on the bottom surface of the front section of the circuit board 40 and are a row of gold fingers, and the limiting structure 50 is two insulating seats that protrude from the top and bottom surfaces of the connecting plate 55 and are between the circuit numbers 1, 2 and the circuit numbers 3, 4 of the two rows of first contacts.

[0253] Referring to Figure 69 , Figure 70 and Figure 71 The thirty-ninth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the thirty-seventh embodiment, except that the insulating seat of the connecting plate 55 and the outer cover 30 are both encapsulation bodies that encapsulate the top surface of the circuit board 40, the row of first terminals 60 are bent down at the front and back ends to the top surface of the circuit board to be soldered by SMT, and the limiting structure 50 is formed directly during encapsulation, and the position of the limiting structure 50 is the same as in the thirty-eighth embodiment.

[0254] Referring to Figure 72 , Figure 73 and Figure 74 The fortieth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the thirty-seventh embodiment, except that the circuit board 40 is a thick board, about 1.0 mm, and there is no space between the insulating seat 37 of the connecting plate 55 and the front section of the circuit board 40.

[0255] Referring to Figure 75 , Figure 76 and Figure 77The forty-first embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the twenty-seventh embodiment, except that the two rows of first terminals 60 are embedded in the connection plate 55 by injection molding, the outer cover 30 is a potting body that covers the top surface of the circuit board 40 by potting, and the connection plate 55 has a reinforcing plate 59 on each side, which is made of metal and has a concave cross section, and extends from the connection plate 55 to the circuit board 40, and is clamped and fixed to the circuit board 40.

[0256] Referring to Figure 78 The forty-second embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the forty-first embodiment, except that the pins 64 of the two rows of first terminals 60 are welded to the top surface of the circuit board 40.

[0257] Referring to Figure 79 The forty-third embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the forty-first embodiment, except that the connection plate does not have a clamping slot for clamping the circuit board 40.

[0258] Referring to Figure 80 The forty-fourth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the forty-second embodiment, except that the pins 64 of the two rows of first terminals 60 are welded to the bottom surface of the circuit board 40.

[0259] Referring to Figure 81 , Figure 82 and Figure 83 The forty-fifth embodiment of the present application is a USB2.0 specification UFD, which is substantially the same as the thirty-fourth embodiment, except that the front end of the circuit board 40 has a plastic block 312 on each side, the two plastic blocks 312 are laminated with a second circuit board 424 to form the connection plate 55, the second circuit board 424 and the circuit board 40 have a space therebetween and are aligned front to back, one row of first contacts 41 on one surface of the connection plate 55 is formed on the outside of the second circuit board 424 and is a row of gold fingers, and one row of first contacts 41 on the other surface of the connection plate 55 is formed on the outside of the front end of the circuit board 40 and is a row of gold fingers.

[0260] The second circuit board 424 and the circuit board 40 are clamped and fixed by the pins 425 and the two plastic blocks 312, and the outer cover 30 is a potting body that covers the inner surfaces of the circuit board 40 and the second circuit board 425 by potting.

[0261] Referring to Figure 84 and Figure 85The forty-sixth embodiment of the present application is a USB 2.0 electronic device, which is substantially the same as the thirty-sixth embodiment, except that the outer cover 30 is a plastic box with a height greater than the connecting plate 55, so that the circuit board 40 is in the middle of the outer cover 30, and there is enough space on both sides of the circuit board 40 to configure relevant electronic components.

[0262] Referring to Figure 86 The forty-seventh embodiment of the present application is a USB 2.0 electronic device, which is substantially the same as the thirtieth embodiment, except that the outer cover 30 is a plastic box with a height greater than the connecting plate 55, and the two circuit boards 40 are about 0.3mm thick, so that 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 configure relevant electronic components, which can shorten the length of the entire electronic device.

[0263] Referring to Figure 87 and Figure 88 The forty-eighth embodiment of the present application is a mini USB 2.0 electronic device, which is substantially the same as the thirty-fourth embodiment, except that the connecting plate 55 is a docking structure, which is a plastic insulating seat 34 combined with a circuit board 40 below, the insulating seat is provided with a row of first terminals 60, a row of first contacts 62 is formed on one surface of the docking structure and is formed on the row of first terminals 60, the extension 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 bottom of the circuit board 40 and is a row of gold fingers, there is a space between the insulating seat 34 and the circuit board 40, the electronic unit 4 is arranged in the connecting plate 55 and is electrically connected to the circuit board 40.

[0264] The electronic unit 4 in the thirty-fourth to forty-eighth embodiments can be a storage unit to form a flash drive, or a wireless transceiver unit to form a wireless transceiver device, or a connecting wire to form a male electrical connector, or an adapter circuit and an electrical connector to form an adapter electrical connector, or an expansion circuit and a set of electrical connection sockets to form an expansion socket, or a control unit to form an IC controller.

[0265] In the manufacturing method described in the thirty-fourth embodiment, wherein the back of the two groups of series connection circuits and contacts of the USB2.0 connection interface of the circuit board are further provided with another two groups of series connection circuits and pads of the USB2.0 connection interface in reverse order; the insulating base is provided with another two groups of USB3.0 connection interfaces of the spring terminal structure, the spring terminal is provided with a pin, and the USB3.0 connection interface is behind the USB2.0 connection interface; the circuit board is provided with a through slot for the spring terminal connection interface to spring; thus a USB3.0 specification electronic product can be manufactured.

[0266] In addition, the insulating base can also be directly provided with a plurality of small area soldering plates during manufacturing, and the reinforcing effect can be achieved by soldering the soldering plates and the circuit board. The insulating base can also be extended in length to form an outer cover that completely covers the area of the circuit board where the electronic elements are discharged.

[0267] Please refer to Figure 89 and Figure 90 The forty-ninth embodiment of the present application is a USB2.0 specification USB flash disk, which is basically the same as the forty-first embodiment. In this embodiment, the connecting plate 55 and the two rows of first terminals 60 are injection molded in a buried manner. The connecting plate 55 is provided with a reinforcing plate 59 on each side. The reinforcing plate 59 is made of metal and has a cross-section in the shape of The reinforcing plate 59 extends from the connecting plate 55 to the circuit board 40, and is clamped and fixed with the circuit board 40. The difference between this embodiment and the forty-first embodiment is that a rubber cover is not provided to cover the circuit board 40 and the electronic unit 4.

[0268] In addition, the two rows of first contacts 62, 41 are USB2.0 connection interfaces, which can respectively transmit VCC, USB D-, USB D+, and GND signals. The two rows of first contacts 41 are the same connection interface and the circuit numbers are arranged in reverse order, as shown in Figure 62 The circuit numbers of the one row of first contacts 62 on the upper surface of the connecting plate 55 are a1, a2, a3, and a4 from right to left. The circuit numbers of the one row of first contacts 41 on the lower surface of the connecting plate 55 are b4, b3, b2, and b1 from right to left. In addition, the connecting plate 55 is symmetrical in shape, so it can be positioned in a female electrical connector in both directions.

[0269] The two rows of first contacts 62, 41 with the same circuit numbers are electrically connected and series connected into a group, that is, 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 contacts and must not be short-circuited. Therefore, a1 and b1 are first electrically connected through a Schottky diode 46. The Schottky diode 46 mainly prevents reverse current flow, so as to achieve the effect of preventing short circuit.

[0270] The above-mentioned use of the Schottky diode to prevent short circuit is one way of electronic reverse flow prevention or short circuit prevention circuit safety protection, but there are many ways such as setting reverse flow prevention electronic elements or short circuit prevention electronic elements or circuit safety protection elements or safety circuit setting means to achieve the effect of circuit safety protection.

[0271] Referring to Figure 91 , which is a fifty-first embodiment of the present application, is substantially the same as the forty-ninth embodiment, except that the reinforcing plate 59 of the present embodiment has a cross-section in the shape of .

[0272] Referring to Figure 92 , which is a fifty-first embodiment of the present application, is substantially the same as the forty-ninth embodiment, except that the reinforcing plate 59 of the present embodiment has a cross-section in the shape of .

[0273] Referring to Figure 93 , which is a fifty-first embodiment of the present application, is substantially the same as the forty-ninth embodiment, except that the reinforcing plate 59 of the present embodiment has a cross-section in the shape of , but does not engage the circuit board 40.

[0274] Referring to Figure 94 and Figure 95 , which is a fifty-third embodiment of the present application, is a USB 2.0 specification flash drive, which is substantially the same as the forty-ninth embodiment, except that the reinforcing plate 59 and the connecting plate 55 are integrally formed of plastic, the reinforcing plate 59 integrally connects to the connecting plate 55 at the rear end and extends to the rear on both sides, and the cross-section of the reinforcing plate 59 is also in the shape of a concave letter to fit the circuit board 40 on both sides.

[0275] In addition, the cross-section of the reinforcing plate 59 can be in other shapes to fit or engage or adhere to the circuit board on both sides.

[0276] Referring to Figure 96 and Figure 97 , which is a fifty-fourth embodiment of the present application, is a USB 2.0 specification flash drive, which is substantially the same as the forty-ninth embodiment, except that the reinforcing structure is a sleeve slot 52 provided on the connecting plate 55, the front section of the circuit board 40 is sleeved and fixed in the sleeve slot 52, the sleeve slot 52 is located in the middle of the thickness of the connecting plate 55, and the sleeve slot 52 covers and abuts the left and right sides and the upper and lower surfaces of the front section of the circuit board 40.

[0277] Referring to Figure 98 and Figure 99The fifth fifty-fifth embodiment of the present application is a USB2.0 specification flash disk, which is substantially the same as the fortieth embodiment and the forty-ninth embodiment. The same as the fortieth embodiment and the forty-ninth embodiment, the connecting plate 55 of the present embodiment also includes an insulating base 34 and a front section of the circuit board 40. The insulating base 34 is arranged on the front section of the circuit board 40. The insulating base 34 is provided with a row of first contacts 62 on the top surface. The row of first contacts 62 on the insulating base 34 is formed in a row of first terminals 60. The first terminals 60 are provided with connecting pins 64 electrically connected to or welded on the circuit board 40. The bottom surface of the front section of the circuit board 40 is provided with a row of first contacts 41. The row of first contacts 41 of the circuit board 40 are circuit contacts. The insulating base 34 is provided with a reinforcing plate 59 on each side. 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 in the shape of . The reinforcing plate 59 extends to the rear section of the circuit board 40 and is welded on the circuit board 40. The difference between the present embodiment and the fortieth embodiment and the forty-ninth embodiment is that the present embodiment is not provided with a sealing glue covering the top surface of the circuit board 40 and covering the electronic unit 4.

[0278] Please refer to Figure 100 The fifth fifty-sixth embodiment of the present application is substantially the same as the fifth fifty-fifth embodiment. The difference between the present embodiment and the fifth fifty-fifth embodiment is that the cross-section of the reinforcing plate 59 of the present embodiment is in the shape of .

[0279] Please refer to Figure 101 The fifth fifty-seventh embodiment of the present application is substantially the same as the fifth fifty-fifth embodiment. The difference between the present embodiment and the fifth fifty-fifth embodiment is that the cross-section of the reinforcing plate 59 of the present embodiment is in the shape of .

[0280] Please refer to Figure 102 The fifth fifty-eighth embodiment of the present application is substantially the same as the fifth fifty-fifth embodiment. The difference between the present embodiment and the fifth fifty-fifth embodiment is that the cross-section of the reinforcing plate 59 of the present embodiment is in the shape of .

[0281] Please refer to Figure 103 The fifth fifty-ninth embodiment of the present application is substantially the same as the fifth fifty-fifth embodiment. The difference between the present embodiment and the fifth fifty-fifth embodiment is that the cross-section of the reinforcing plate 59 of the present embodiment is in the shape of .

[0282] Please refer to Figure 104 , Figure 105 , Figure 106 and Figure 107The present application is the 60th embodiment, which is a USB2.0 specification's USB flash disk, and is substantially the same as the 39th embodiment. The difference between the present embodiment and the 39th embodiment is that a circuit board 40 and a second circuit board 424 are provided. The circuit board 40 is provided with four first contacts 41 in the front section of the lower surface. The upper surface of the circuit board 40 is first soldered with an electronic unit 4, then soldered with two front and back extending reinforcing plates 59 on the two sides, and then soldered with four F-shaped conductive pieces 593 in the front section. Then, an outer covering body 30 is formed by covering the upper surface of the circuit board 40 and the electronic unit 4 with an encapsulation glue, and the two reinforcing plates 59 and the upper ends of the four conductive pieces 593 are exposed. As shown in FIG. 39, the upper surface of the second circuit board 424 is provided with four first contacts 41 and the lower surface is provided with pads corresponding to the two reinforcing plates 59 and the four conductive pieces 593. The four first contacts 41 on the upper surface are reversely arranged and electrically connected to the pads on the lower surface through the conductive part 420. The second circuit board 424 is stacked in the front section of the outer covering body 30 and the pads on the lower surface are soldered to the upper ends of the two reinforcing plates 59 and the four conductive pieces 593 to form a connecting plate 55. Thus, the upper and lower surfaces of the connecting plate 55 are each provided with a row of first contacts with circuit numbers in reverse order. Figure 107

[0283] The manufacturing method of the present embodiment includes the following steps:

[0284] Step 1: A circuit board 40 is provided, which is provided with two groups of conductive contacts, a series circuit with the two groups of conductive contacts reversely arranged in sequence, a circuit and contacts of an electronic unit 4, and contacts of a reinforcing plate 59. The series circuit with the two groups of conductive contacts reversely arranged in sequence is electrically connected to the circuit of the electronic unit 4. The two groups of conductive contacts are respectively arranged on different surfaces of the circuit board 40. The group of conductive contacts on the front section of the circuit board 40 relative to the other surface provided with the contacts of the electronic unit 4 is a group of connection interfaces, i.e. a row of four first contacts 41, which are USB2.0 connection interfaces.

[0285] Step 2: An insulator is provided, which is a second circuit board 424, provided with the other group of connection interfaces, i.e. a row of first contacts 41, which are USB2.0 connection interfaces.

[0286] Step 3: An anti-reverse flow electronic element or an anti-short circuit electronic element or a Schottky diode 46 or other electronic circuit safety protection device is provided.

[0287] Step 4: An electronic unit 4, an additional group of conductive contacts, and a reinforcing plate 59 are provided. The additional group of conductive contacts is a group of conductive pieces 593.

[0288] Step 5: Soldering material is applied to the contacts of the circuit board 40.

[0289] ​Six, the anti-backflow electronic component or the anti-short circuit electronic component or the Schottky diode or other electronic circuit safety protection device, the electronic unit 4 and the two reinforcing plates 59 are respectively arranged and pasted on the corresponding contacts of the circuit board 40, and the set of conductive sheets 593 is pasted on a set of conductive contacts on the surface of the circuit board;

[0290] Seven, the elements respectively pasted on the circuit board 40 are processed by reflow soldering;

[0291] Eight, one surface of the circuit board 40 with the above-mentioned elements is encapsulated to form an outer cover 30, and the circuit board 40 and the outer cover 30 are combined into an encapsulated body, and the set of conductive sheets 593 and the two reinforcing plates 59 are exposed on the upper surface of the outer cover 30, and a set of connection interfaces on the other surface of the circuit board, that is, a row of four first contacts 41, are exposed on the circuit board surface of the encapsulated body;

[0292] Nine, a set of conductive sheets 593 and reinforcing plates 59 are provided on the upper surface of the outer cover, and

[0293] Ten, the second circuit board 424 is superimposed on the front section of the upper surface of the outer cover 30, 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 soldering points connected to the two reinforcing plates 59, and finally reflow soldering is performed.

[0294] The reinforcing structure described above uses reinforcing plates 59, but welding plates can also be used, and the second circuit board 424 can be ultrasonically or high-frequency combined with the outer cover 30.

[0295] Please refer to Figure 108 , which is the sixty-first embodiment of the present application, which is basically the same as the sixtieth embodiment, the difference is that the outer cover 30 of the embodiment further covers the two side surfaces of the circuit board 40.

[0296] Please refer to Figure 109 , which is the sixty-second embodiment of the present application, which is basically the same as the sixtieth embodiment, the difference is that the outer cover 30 of the embodiment is superimposed with an insulating seat 34, the insulating seat 34 is provided with a row of first contacts 62 on the upper surface, the row of first contacts 62 is formed on a row of first terminals 60, the insulating seat 34 and the row of first terminals 60 are formed by embedding plastic injection molding, the first terminals 60 are provided with pins soldered on the upper ends of four conductive sheets on the front section of the outer cover 30, and the insulating seat 34 can be ultrasonically or high-frequency combined with the outer cover 30.

[0297] Please refer to Figure 110The sixty-third embodiment of the present application is substantially the same as the thirty-fourth embodiment, except that the outer cover 30 and the insulating seat 34 are separately provided instead of being integrally formed. The outer cover 30 and the insulating seat 34 can be bonded to the circuit board 40 by ultrasonic or high frequency waves.

[0298] Referring to Figure 111 , Figure 112 , Figure 113 and Figure 114 The sixty-fourth embodiment of the present application is a USB 2.0 specification flash drive, which is substantially the same as the thirty-fourth embodiment. The embodiment includes a circuit board 40, two insulating seats 34, 34', an electronic unit 4, and an outer cover 30, wherein:

[0299] The circuit board 40 has a set of conductive contacts 430 on the upper and lower surfaces and two soldering areas 432 at the front end.

[0300] The two insulating seats 34, 34' each have a set of conductive contacts, which are four first contacts 62 in a row, which are the connection interfaces of USB 2.0. The two rows of first contacts 62 are formed on two rows of first terminals 60. The two insulating seats 34, 34' and the two rows of first terminals 60 are separately formed by embedding plastic injection molding. The two rows of first terminals 60 have pins 64 that are soldered to a set of conductive contacts 430 on the upper and lower surfaces of the circuit board 40. The front ends 66 of the two rows of first terminals 60 are soldered to the soldering areas 432 on the upper and lower surfaces of the circuit board 40. The two insulating seats 34, 34' each have two notches 342 at the front end corresponding to the soldering areas 432, which can be supplemented by soldering. In addition, the insulating seat 34 is larger, with its two side edges substantially flush with the circuit board 40. Each of the two sides has a front-to-back extending reinforcing plate 59 that is soldered to the soldering area 434.

[0301] The electronic unit 4 is a storage unit that includes relevant electronic components and control circuits. The electronic unit 4 is electrically connected to the upper surface of the circuit board 40.

[0302] The outer cover 30 is an insulating encapsulating body that encapsulates the circuit board 40 with the electronic unit 4 and the insulating seat 34' on one side, leaving only one row of first contacts 62 on the insulating seat 34' exposed on the upper surface of the outer cover 30.

[0303] Through the above structure, the circuit board 40 has an insulating seat on the upper and lower surfaces of the front end to form the connection plate 55, which has a set of connection interfaces, i.e., one row of first contacts 62, on both surfaces.

[0304] The manufacturing method of the embodiment includes the following steps:

[0305] I. Provide a circuit board 40, which is provided with two groups of conductive contacts 430, a series circuit of reversely arranged contacts, a circuit of anti-reverse flow or anti-short circuit 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 with the circuit of the electronic unit. The two groups of conductive contacts 430 are respectively arranged on different surfaces of the circuit board 40;

[0306] II. Provide an insulator, which is an insulating seat body 34, provided with a group of USB2.0 connection interfaces and a reinforcing plate 59, which is a row of four first contacts 62 formed in a row of first terminals 60. The insulating seat body 34' and the row of first terminals 60 are formed by embedding plastic injection molding;

[0307] III. Provide anti-reverse flow electronic components or anti-short circuit electronic components or Schottky diodes or other electronic circuit safety protection devices;

[0308] IV. Provide an electronic unit 4 and an additional group of conductive contacts, which are arranged on an insulating seat body 34', which is a group of USB2.0 connection interfaces, which is a row of four first contacts 62 formed in a row of first terminals 60. The insulating seat body 34' and the row of first terminals 60 are formed by embedding plastic injection molding;

[0309] V. Provide soldering material to be applied to the contacts and soldering areas 432 on one surface of the circuit board 40;

[0310] VI. Arrange and paste the anti-reverse flow electronic components or anti-short circuit electronic components or Schottky diodes or other electronic circuit safety protection devices and the electronic unit 4 on the corresponding contacts on the circuit board 40. The additional group of conductive contacts, i.e. the pins 64 of the row of first terminals 60 of the insulating seat body 34', are pasted on the group of conductive contacts 430 on the surface of the circuit board. The front ends 66 of the two first terminals 60 are connected with the soldering areas 432;

[0311] VII. Perform reflow soldering on the components pasted on the circuit board 40;

[0312] VIII. Package the surface of the circuit board 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. The additional group of conductive contacts, i.e. the first contacts 62 of the row of first terminals 60, are exposed on the upper surface of the outer cover 30 of the package. The group of conductive contacts on the other surface of the circuit board are exposed on the surface of the circuit board of the package;

[0313] IX. A set of conductive contacts 430, solder areas 432 and solder areas 434 of the reinforcing plate 59 are provided on the surface of the circuit board 40 to which the solder material is applied.

[0314] X. The insulating housing 34 is laminated to the front end of the circuit board 40 of the package, the pins 64 of the first terminals 60 of the insulating housing 34 are connected to the set of conductive contacts 430 to which the solder material is applied, the front ends 66 of the two first terminals 60 are connected to the solder areas 432, the reinforcing plate 59 is connected to the solder areas 434, and the soldering process is performed.

[0315] In the embodiment, the insulating housing on the front end of the circuit board 40 is formed by laminating the smaller insulating housing 34' to the circuit board 40. The insulating housing 34' is mainly used to connect the first terminals 60 to simplify the manufacturing process. Alternatively, the first terminals 60 can be directly soldered to the circuit board 40 to form an insulating housing.

[0316] The reinforcing structure described above is formed by the reinforcing plate 59. Alternatively, the reinforcing structure can be formed by soldering. The insulating housing 34 can be connected to the circuit board 40 by ultrasonic or high-frequency waves.

[0317] Referring to Figure 115 and Figure 116 The USB 2.0 flash drive of the sixty-fifth embodiment is substantially the same as the sixty-fourth embodiment. The difference is that the insulating housing 34 of the sixty-fifth embodiment is integrally provided with the limiting structure 50 protruding from the set of connecting interfaces and the set of conductive contacts opposite to the set of connecting interfaces, i.e., the limiting structure 50 protrudes from the first terminals 62 on the two surfaces of the connecting plate 55.

[0318] The electronic unit 4 of the forty-ninth to sixty-fifth embodiments can be a storage unit to form a flash drive, a wireless transceiver unit to form a wireless transceiver device, a connecting wire to form a male connector, a conversion circuit and a connector to form a conversion connector, an expansion circuit and a set of connectors to form an expansion socket, or a control unit to form an IC controller.

[0319] The specific embodiments described in the detailed description of the preferred embodiments are merely intended to facilitate the understanding of the technical content of the present application, and are not intended to limit the present application to the embodiments. Various modifications can be made without departing from the spirit of the present application and the following claims.

[0320] List of main symbol names

[0321] Flash drive 1 Flash drive 3

[0322] Plastic base 10 circuit board 15 contact 16

[0323] Female electrical connector 20 connecting slot 21 tongue 22

[0324] Contact 23 metal shell 25 spring 24

[0325] Outer cover 30 lower base 31 upper cover 32

[0326] Chamber 33 insulating base 34 positioning groove 35

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

[0328] Space 39 plastic block 312 through hole 301

[0329] Electronic unit 4 circuit board 40 first contact 41

[0330] Through hole 42 memory 43

[0331] Memory 44 control circuit 45 Schottky diode 46

[0332] IC control chip 47 contact 48 circuit 49

[0333] Connecting slot 410 first contact 411 second contact 412

[0334] Tongue 413 contact 417 contact 418

[0335] Wire 419 conductive part 420 upper circuit board 422

[0336] Lower circuit board 423 second circuit board 424 insertion pin 425

[0337] Conductive contact 430 welding area 432 welding area 434

[0338] Clamping slot 52 limiting structure 50 connecting plate 55

[0339] Through hole 56 concave surface 57 docking structure 58

[0340] Reinforcing plate 59 welding plate 591 conductive sheet 593

[0341] First terminal 60 extension 61 first contact 62

[0342] First contact 63 pin 64 front end 66

[0343] Second terminal 70 extension 71 second contact 72

[0344] Detection structure 80 movable terminal 81 movable terminal 82

[0345] Fixed terminal 83 Bump 85 Switching device 90 Slide knob 91 Slide groove 92 Conductive portion 93

Claims

1. A double-sided electrical connection structure, which is capable of being double-sidedly connected to a mating electrical connector, comprising: a mating structure, which is provided with a connection slot, a front end of the connection slot being a plug-in opening and being provided with a top surface and a bottom surface, the top surface and the bottom surface each being provided with a connection interface, the two connection interfaces each being provided with a row of contact points, the two rows of contact points each being provided with a plurality of contact points of different signal circuits, the two rows of contact points being formed on two rows of terminals, the connection slot being shaped to be double-sidedly connected to a mating portion of the mating electrical connector; characterized in that a rear section of the top surface being higher than a front section of the top surface towards a center height of the connection slot, a rear section of the bottom surface being higher than a front section of the bottom surface towards the center height of the connection slot, the mating portion being a connection plate, the connection plate being provided with a connection interface on each of its upper and lower plate surfaces.

2. The double-sided electrical connection structure according to claim 1, wherein the contact points of one pair of the same signal circuits of the two connection interfaces are oppositely arranged and electrically connected to each other.

3. The double-sided electrical connection structure according to claim 1, wherein a detection structure is provided, which is provided with a detection terminal, the detection terminal being one of the two connection interfaces of the mating structure.

4. The double-sided electrical connection structure according to claim 1, wherein the mating structure is provided with an insulating body, a front end of the insulating body being provided with the connection slot, the insulating body being provided with upper and lower insulating seats, the two rows of terminals being respectively embedded in plastic injection molding and positioned on the upper and lower insulating seats.

5. The double-sided electrical connection structure according to claim 1, wherein a reinforcing plate is provided, the mating structure being provided with an insulating body, a front end of the insulating body being provided with the connection slot, the reinforcing plate being provided in the middle of the insulating body of the mating structure, or the reinforcing plate separating the two rows of terminals.

Images