USB connector, circuit board assembly and electronic equipment

Abstract

The invention provides a USB connector, a circuit board assembly and electronic equipment, the USB connector comprises a shell and an insertion assembly, at least part of the insertion assembly is inserted into the shell, and the insertion assembly comprises an upper conductive terminal group and a lower conductive terminal group; the upper conductive terminal group comprises a first power supply terminal and a second power supply terminal; the lower conductive terminal group comprises a third power supply terminal and a fourth power supply terminal; each conductive terminal comprises a butt joint part at the front end, a welding part at the rear end and a main body part arranged between the butt joint part and the welding part; wherein the welding part of the first power supply terminal, the welding part of the second power supply terminal, the welding part of the third power supply terminal and the welding part of the fourth power supply terminal are electrically connected with the outside as a whole. According to the USB connector provided by the embodiment of the invention, the power supply terminals of the upper and lower layers of conductive terminals are integrally designed, so that the maximization of the weld legs and the bonding pads can be realized, and the overcurrent capability of the USB connector is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of a USB connector structure of an electronic device, and in particular to a USB connector, a circuit board assembly and an electronic device. Background Art

[0002] In the existing Type C design, when a large current passes through, the terminal solder pins are the highest point of temperature rise. In conventional technical solutions, the terminal solder pins are generally placed in a misaligned position, and the terminal solder pins and solder pads cannot be enlarged, so during the charging process, the terminal solder pins temperature rises too high, affecting the overcurrent capacity of the socket. Summary of the invention

[0003] A first aspect of an embodiment of the present application provides a USB connector, the USB connector comprising a housing and an insertion component at least part of which is inserted into the housing, the insertion component comprising an upper conductive terminal group and a lower conductive terminal group;

[0004] The upper conductive terminal group includes a first power terminal and a second power terminal; the lower conductive terminal group includes a third power terminal and a fourth power terminal;

[0005] Each conductive terminal includes a butt joint portion at the front end, a welding portion at the rear end, and a main body portion disposed between the butt joint portion and the welding portion;

[0006] The welding portion of the first power terminal, the welding portion of the second power terminal, the welding portion of the third power terminal and the welding portion of the fourth power terminal are electrically connected to the outside as a whole.

[0007] In a second aspect, an embodiment of the present application provides a circuit board assembly, which includes a PCB board and the USB connector described in the above embodiment connected to the PCB board, the shell of the USB connector is fixedly connected to the PCB board, and the conductive terminal welding portion of the USB connector is welded to the PCB board.

[0008] In a third aspect, an embodiment of the present application provides an electronic device, which includes a functional device and the circuit board assembly described in the above embodiment, and the functional device is electrically connected to the PCB board of the circuit board assembly.

[0009] The USB connector provided in the embodiment of the present application can maximize the soldering feet and soldering pads by integrating the power terminals of the upper and lower layers of conductive terminals, thereby improving the overcurrent capacity of the USB connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a circuit board assembly for electronic equipment of the present application;

[0012] Figure 2 yes Figure 1 A schematic structural diagram of the circuit board assembly from another perspective in the embodiment;

[0013] Figure 3 yes Figure 1 A schematic diagram of the structure of a USB connector in an embodiment;

[0014] Figure 4 yes Figure 3 A schematic diagram of the structural disassembly of the insert assembly in the embodiment;

[0015] Figure 5 yes Figure 3 A schematic diagram of the structural disassembly of the conductive terminal in the embodiment;

[0016] Figure 6 is a partial structural schematic diagram of the USB connector in this embodiment;

[0017] Figure 7 is another partial structural schematic diagram of the USB connector in this embodiment;

[0018] Figure 8 It is a structural schematic diagram of an embodiment of the electronic device of the present application;

[0019] Fig. 9 yes Figure 8 A schematic cross-sectional view of the structure of the electronic device at AA in the embodiment;

[0020] Fig.10 It is a schematic diagram of the structural composition block diagram of an embodiment of the electronic device of the present application. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0022] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). Communication terminals configured to communicate via a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, organizers, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0025] The present application embodiment first provides a circuit board assembly, please refer to Figure 1 and Figure 2 ,

[0026] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of a circuit board assembly for electronic equipment of the present application.

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure of the circuit board assembly in another perspective in the embodiment; it should be noted that the electronic device in the present application may include electronic devices with circuit boards and USB interfaces such as mobile phones, tablet computers, laptops, and wearable devices. The circuit board assembly 100a for electronic devices includes a PCB board 100 and a USB connector 200.

[0028] For more information, please see Figures 3 to 5 , Figure 3 yes Figure 1 A schematic diagram of the structure of the USB connector in the embodiment, Figure 4 yes Figure 3 A schematic diagram of the structural disassembly of the insert component in the embodiment, Figure 5 yes Figure 3 Schematic diagram of the structure of the conductive terminal in the embodiment. The USB connector 200 in this embodiment is a structure of a connector socket based on the type C structure, specifically including a housing 210 and an insertion component 220 at least part of which is inserted into the housing 210. The housing 210 is used to be fixedly connected to the PCB board 100. Among them, the insertion component 220 includes an upper conductive terminal group 221 and a lower conductive terminal group 222.

[0029] Optionally, the upper conductive terminal group 221 includes a first power terminal 2211 and a second power terminal 2212; the lower conductive terminal group 222 includes a third power terminal 2221 and a fourth power terminal 2222. Each conductive terminal includes a docking portion 201 at the front end, a welding portion 203 at the rear end, and a main body 202 disposed between the docking portion 201 and the welding portion 203. The welding portion of the first power terminal 2211, the welding portion of the second power terminal 2212, the welding portion of the third power terminal 2221, and the welding portion of the fourth power terminal 2222 are electrically connected to the outside as a whole.

[0030] Optionally, in one embodiment, the welding portion of the first power terminal 2211, the welding portion of the second power terminal 2212, the welding portion of the third power terminal 2221 and the welding portion of the fourth power terminal 2222 may be an integrated structure. The integrated structure here means that the welding portions of the four are fixed together by an integrated die-casting structure, welding or the like.

[0031] Please continue reading Figure 5 Optionally, the welding portion of the first power terminal 2211 and the welding portion of the second power terminal 2212 in this embodiment are an integrated structure and form an upper power terminal 2210, the welding portion of the third power terminal 2221 and the welding portion of the fourth power terminal 2222 are an integrated structure and form a lower power terminal 2220, and the upper power terminal 2210 and the lower power terminal 2220 are electrically connected. Optionally, the upper power terminal 2210 and the lower power terminal 2220 in this embodiment are stacked and welded.

[0032] Optionally, the insertion component 220 in the embodiment of the present application also includes an insulating bracket 223, the upper conductive terminal group 221 and the lower conductive terminal group 222 are respectively embedded in the insulating bracket 223, and the docking portion 210 of the conductive terminal is exposed on the upper and lower surfaces of the insulating bracket 223. Optionally, the insulating bracket 223 can be made of plastic.

[0033] Optionally, see Figure 4 and Figure 5 In this embodiment, the docking portion and the main body of the first power terminal 2211 are respectively stacked with the docking portion and the main body of the third power terminal 2221, and the docking portion and the main body of the second power terminal 2212 are respectively stacked with the docking portion and the main body of the fourth power terminal 2222.

[0034] The upper conductive terminal group 221 further includes a first signal terminal 2213 and a first grounding terminal 2214, and the first signal terminal 2213, the first grounding terminal 2214, the first power terminal 2211 and the second power terminal 2212 are arranged in the same layer and spaced apart; correspondingly, the lower conductive terminal group 222 further includes a second signal terminal 2223 and a second grounding terminal 2224, and the second signal terminal 2223, the second grounding terminal 2224, the third power terminal 2221 and the fourth power terminal 2222 are arranged in the same layer and spaced apart. Optionally, in this embodiment, the first signal terminal 2213 and the second signal terminal 2223 can be arranged in multiple lines (not limited to 4 lines in the illustrated embodiment) in a one-to-one correspondence, and the first grounding terminal 2214 and the second grounding terminal 2224 can be arranged in two lines. They are respectively arranged at the two side positions.

[0035] Optionally, the docking portion and at least part of the main body of the first signal terminal 2213 are stacked with the docking portion and at least part of the main body of the second signal terminal 2223; the docking portion and at least part of the main body of the first grounding terminal 2214 are stacked with the docking portion and at least part of the main body of the second grounding terminal 2224.

[0036] Each conductive terminal includes a docking portion 201 at the front end, a welding portion 203 at the rear end, and a main body 202 disposed between the docking portion 201 and the welding portion 203; the welding portion 203 is used for welding and connecting with the PCB board 100. Optionally, the upper power supply terminal 2210 and the lower power supply terminal 2220 in this embodiment are centrally arranged.

[0037] When the current of Type C is too large, the temperature rises. Through actual measurement, it is found that the place with the highest temperature is concentrated at the welding part. The temperature rise can only be further reduced by increasing the size of the welding part and the area of ​​the pad. The technical solution in the embodiment of the present application combines the welding feet (welding part) of the power pin into one, and designs it in the center, and welds the upper and lower rows of terminal welding feet together through a spot welding process, so that the welding feet and the pad can be maximized, thereby improving the overcurrent capacity of Type C (this design structure can increase the overcurrent capacity of Type C to more than 15A) and reducing the temperature rise.

[0038] Optionally, please also refer to Figures 3 to 7 , Figure 6 is a partial structural diagram of the USB connector in this embodiment, Figure 7 2 is another partial structural diagram of the USB connector in this embodiment. In this embodiment, the main body of the first grounding terminal 2214 and the main body of the second grounding terminal 2224 are aligned and fitted, and an avoidance gap 2001 is provided between the docking portion of the first grounding terminal 2214 and the docking portion of the second grounding terminal 2224. Optionally, the insertion component 220 in this embodiment also includes a snap-fitting piece 224, which passes through the avoidance gap 2001. The snap-fitting piece 224 is used to snap-fit ​​with the externally inserted USB male plug, thereby providing a plug-in pre-tightening force for the USB type C and ensuring the reliability of the connection. The snap-fitting piece 224 is made of metal materials such as stainless steel.

[0039] In conventional technical solutions, the grounding terminals on both sides are designed to overlap with the overall structure of the middle steel sheet (locking sheet), which makes it impossible to further thicken the grounding terminals, thus affecting the overcurrent capacity of the USB connector.

[0040] The technical solution in this embodiment is to thin a part of the ground terminal (the position corresponding to the docking portion), and the middle steel sheet passes through the thinned area, so that the ground terminal can be made thicker as a whole, thereby improving the overcurrent capacity of the USB connector.

[0041] Specifically, the avoidance gap 2001 is formed by making the thickness of the docking portion of the first grounding terminal 2214 smaller than the thickness of the main body of the first grounding terminal 2214, or making the thickness of the docking portion of the second grounding terminal 2224 smaller than the thickness of the main body of the second grounding terminal 2224. The solution in this embodiment is to make the thickness of the docking portion of the first grounding terminal 2214 smaller than the thickness of the main body of the first grounding terminal 2214 and to make the thickness of the docking portion of the second grounding terminal 2224 smaller than the thickness of the main body of the second grounding terminal 2224, that is, the docking portion of the first grounding terminal 2214 and the docking portion of the second grounding terminal 2224 are both thinned to form the avoidance gap 2001. Of course, in some other embodiments, any one of the docking portion of the first grounding terminal 2214 and the docking portion of the second grounding terminal 2224 can be thinned, which is not specifically limited here.

[0042] In conventional technical solutions, due to the overlapping design of the overall structure of the grounding terminals on both sides and the middle steel sheet (locking sheet), the overall thickness of the insertion component in the middle of the USB connector generally cannot exceed 0.7mm. This results in the thickness of the grounding terminals on both sides not being greater than 0.25mm, because the thickness of the middle steel sheet is generally 0.2mm.

[0043] The technical solution in the embodiment of the present application is to perform local thinning at the joint position of the ground terminal, so the thickness (T1, T2) of the main body of the first ground terminal 2214 and the main body of the second ground terminal 2224 can be 0.25mm to 0.4mm, such as 0.25mm, 0.26mm, 0.28mm, 0.3mm, 0.32mm, 0.55mm, 0.4mm, etc. Specifically, it can be 0.3mm to 0.35mm, that is, the sum of the thickness of the main body of the first ground terminal 2214 and the main body of the second ground terminal 2224 reaches the maximum limit of the overall thickness of the insertion component (generally about 0.7mm), which greatly improves the overcurrent capacity of the USB connector.

[0044] Optionally, see Figure 4 and Figure 5 In this embodiment, there are two engaging pieces 224, which are respectively arranged on two opposite sides of the insulating bracket 223, and each engaging piece 224 passes through the avoidance gap of a pair of ground terminal docking parts correspondingly arranged therewith. In addition, in some other embodiments, such as a multi-pin USB connection structure, the engaging piece 224 can also be designed to be a welding part structure electrically connected to a PCB board, so as to achieve electrical signal shielding of adjacent conductive terminals. The detailed features of this part are within the scope of understanding of those skilled in the art and will not be repeated here.

[0045] In addition, the present application also provides an electronic device, please refer to Figure 8 and Fig. 9 , Figure 8 is a structural diagram of an embodiment of the electronic device of the present application, Fig. 9 yes Figure 8 The schematic cross-sectional view of the structure of the electronic device at AA in the embodiment, the electronic device in this embodiment may include a display screen module 30, a housing 10 and a circuit board assembly 100a. The structure of the circuit board assembly 100a may refer to the above embodiment. The display screen module 30 in this embodiment may be used as a functional device. In addition, the functional device may also include a sensor, a speaker, etc. of the electronic device, which is not specifically limited here.

[0046] Optionally, the display screen module 30 cooperates with the housing 10 to form an accommodation space 1000, the PCB board 100 of the circuit board assembly 100a is disposed in the accommodation space 1000, the PCB board 100 is electrically connected to the display screen module 30, and the PCB board 100 is used to control the display screen module 30. The detailed technical features of the other parts of the electronic device are within the scope of understanding of those skilled in the art and will not be repeated here.

[0047] See also Fig.10 , Fig.10 It is a schematic diagram of the structural composition block diagram of an embodiment of an electronic device of the present application. The electronic device can be a mobile phone, a tablet computer, a laptop computer, and a wearable device (such as a VR device, a smart watch), etc. The diagram of this embodiment takes a mobile phone as an example. The structure of the electronic device may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (which may be the display screen module 30 in the above embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980 (which may be the PCB board 100 in the above embodiment), and a power supply 990, etc. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide power to the entire electronic device.

[0048] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes an infrared sensor, a laser sensor, etc., for detecting user approach signals, distance signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 for receiving and sending sound signals; the wifi module 970 is used to receive and transmit wifi signals, and the processor 980 is used to process data information of the electronic device. For the specific structural features of the electronic device, please refer to the relevant description of the above embodiment, which will not be described in detail here.

[0049] The structure of the USB connector of the electronic device in this embodiment can realize excessive current, making it possible to quickly charge the electronic device.

[0050] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A USB connector, characterized in that: The USB connector comprises a housing and an insertion component at least part of which is inserted into the housing, wherein the insertion component comprises an upper conductive terminal group and a lower conductive terminal group; The upper conductive terminal group includes a first power terminal and a second power terminal; the lower conductive terminal group includes a third power terminal and a fourth power terminal; Each conductive terminal includes a butt joint portion at the front end, a welding portion at the rear end, and a main body portion disposed between the butt joint portion and the welding portion; The welding portion of the first power terminal, the welding portion of the second power terminal, the welding portion of the third power terminal and the welding portion of the fourth power terminal are electrically connected to the outside as a whole.

2. The USB connector according to claim 1, wherein: The welding portion of the first power terminal, the welding portion of the second power terminal, the welding portion of the third power terminal, and the welding portion of the fourth power terminal are an integrated structure.

3. The USB connector according to claim 1, wherein: The welding portion of the first power terminal and the welding portion of the second power terminal are an integral structure and form an upper power terminal. The welding portion of the third power terminal and the welding portion of the fourth power terminal are an integral structure and form a lower power terminal. The upper power terminal and the lower power terminal are electrically connected.

4. The USB connector according to claim 3, characterized in that: The upper main power terminal and the lower main power terminal are stacked and connected by welding.

5. The USB connector according to claim 1, wherein: The docking portion and the main body of the first power terminal are respectively stacked with the docking portion and the main body of the third power terminal, and the docking portion and the main body of the second power terminal are respectively stacked with the docking portion and the main body of the fourth power terminal.

6. The USB connector according to claim 4, characterized in that: The upper conductive terminal group also includes a first signal terminal and a first ground terminal, and the first signal terminal, the first ground terminal, the first power terminal and the second power terminal are arranged in a same layer and spaced apart from each other; the lower conductive terminal group also includes a second signal terminal and a second ground terminal, and the second signal terminal, the second ground terminal, the third power terminal and the fourth power terminal are arranged in a same layer and spaced apart from each other.

7. The USB connector according to claim 6, characterized in that: Each conductive terminal includes a docking portion at the front end, a welding portion at the rear end, and a main body portion arranged between the docking portion and the welding portion; wherein the upper main power terminal and the lower main power terminal are centrally arranged; the docking portion and at least a portion of the main body portion of the first signal terminal are respectively stacked with the docking portion and at least a portion of the main body portion of the second signal terminal; the docking portion and at least a portion of the main body portion of the first grounding terminal are respectively stacked with the docking portion and at least a portion of the main body portion of the second grounding terminal.

8. The USB connector according to claim 6, wherein: The insert assembly further includes an insulating support, the upper conductive terminal group and the lower conductive terminal group are respectively embedded in the insulating support, and the butt joint portions of the conductive terminals are exposed from the insulating support.

9. A circuit board assembly, characterized in that: The circuit board assembly includes a PCB board and a USB connector according to any one of claims 1 to 8 connected to the PCB board, a shell of the USB connector is fixedly connected to the PCB board, and a conductive terminal welding portion of the USB connector is welded to the PCB board.

10. An electronic device, characterized in that: The electronic device comprises a functional device and the circuit board assembly according to claim 9, wherein the functional device is electrically connected to a PCB board of the circuit board assembly.

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