electronic devices

Abstract

This application relates to the field of electronic product technology, and discloses an electronic device including an electrical connector device and a first circuit board. The electrical connector device includes a base and a terminal assembly. The base has a first cavity, a first opening communicating with the first cavity, and a first sidewall defining a partial boundary of the first cavity. The first opening and the first sidewall are disposed opposite to each other in a first direction. The terminal assembly is detachably disposed on the base, and a portion of the terminal assembly is located within the first cavity. Along the first direction, the contacts of the terminal assembly are located between the first sidewall and the first opening. The first circuit board has a plug-in end in the first direction. The plug-in end can be inserted into the first cavity through the first opening along the first direction. The plug-in end abuts against the first sidewall. The first circuit board includes a substrate layer and a circuit layer. Along the first direction, at least a portion of the free end of the circuit layer is spaced apart from the end of the substrate layer. The contacts of the terminal assembly are connected to the circuit layer.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and in particular to an electronic device. Background Technology

[0002] As electronic devices become thinner, lighter, and higher-frequency, the requirements for electrical connectors are also increasing. In particular, FPC (Flexible Printed Circuit) and FFC (Flexible Flat Cable) connectors need to achieve reliable mechanical connections and excellent electrical signal transmission within a limited space. In existing technologies, the contact method between connector terminals and the circuit board is usually relatively simple. During high-speed signal transmission, unused contact portions (residual contacts) on the circuit board can cause signal reflection and crosstalk, affecting signal integrity. Summary of the Invention

[0003] This application provides an electronic device that can significantly reduce circuit stub effects, thereby effectively suppressing signal reflection and crosstalk, and significantly improving the transmission quality of high-frequency signals.

[0004] This application provides an electronic device, including an electrical connector device and a first circuit board. The electrical connector device includes a base and a terminal assembly. The base has a first cavity, a first opening communicating with the first cavity, and a first sidewall defining a partial boundary of the first cavity. The first opening and the first sidewall are disposed opposite to each other in a first direction. The terminal assembly is detachably disposed on the base, and a portion of the terminal assembly is located within the first cavity. Along the first direction, the contacts of the terminal assembly are located between the first sidewall and the first opening. The first circuit board has a plug-in end in the first direction. The plug-in end can be inserted into the first cavity through the first opening along the first direction. The plug-in end abuts against the first sidewall. The first circuit board includes a substrate layer and a circuit layer. Along the first direction, at least a portion of the free end of the circuit layer is spaced apart from the end of the substrate layer. The contacts of the terminal assembly are connected to the circuit layer.

[0005] In some embodiments, the terminal assembly includes a first terminal component and a second terminal component that are independent of each other; the circuit layer includes a short contact portion and a long contact portion that are independent of each other, and the free end of the long contact portion extends beyond the free end of the short contact portion along the direction in which the first circuit board is inserted relative to the base; when the first circuit board is inserted into the base, the first terminal component abuts against the short contact portion, and the second terminal component abuts against the long contact portion.

[0006] In some embodiments, the ends of the substrate layer are flush; or, the ends of the substrate layer are provided with at least one notch, and in a first direction, the notch is provided corresponding to the short contact portion.

[0007] In some embodiments, the free end of the short contact portion is spaced apart from the edge of the notch along the first direction to prevent short circuits from contacting the outside; or, the free end of the short contact portion extends to the edge of the notch along the first direction and ends there, so that the notch can be directly cut into the circuit board to form the notch.

[0008] In some embodiments, along the first direction, the free end of the long contact portion is spaced apart from the end edge of the substrate layer; or, along the first direction, the free end of the long contact portion extends to the end edge of the substrate layer and ends.

[0009] In some embodiments, the first terminal component has a first contact portion, the second terminal component has a second contact portion, the first contact portion and the second contact portion are arranged side by side along a second direction, the second direction being perpendicular to the first direction.

[0010] In some embodiments, the first terminal component includes a high-speed signal terminal, and the second terminal component includes at least one of a low-speed signal terminal, a power supply terminal, and a detection terminal.

[0011] In some embodiments, the first circuit board is an FFC circuit board, or the first circuit board is an FPC circuit board.

[0012] In some embodiments, the electrical connector device includes a swivel cover plate rotatably connected to a base, the swivel cover plate having an unlocked position and a locked position relative to the base; the terminal assembly includes a third terminal component, a portion of the third terminal component being fixedly connected to the base, the portion of the third terminal component being located in a first cavity, along a third direction, the third terminal component being located above a second terminal component, a first circuit board being inserted between the second terminal component and the third terminal component, the first direction, the second direction and the third direction being perpendicular to each other; the third terminal component is connected to the swivel cover plate, and when the swivel cover plate is in the locked position, the swivel cover plate drives the third terminal component to press against the first circuit board.

[0013] In some embodiments, the third terminal component includes at least one first spun terminal. The first spun terminal includes a first fixing part, a first elastic part, and a first moving arm. The first fixing part is detachably fixed to the base. The first elastic part connects the first fixing part and the first moving arm. The spun cover plate is connected to the first moving arm to drive the first moving arm to move.

[0014] In some embodiments, a first moving arm extends along a first direction and has a first end and a second end in the first direction. A first elastic portion is connected between the first end and the second end, and the first end is located in a first cavity. The spinning cover includes an eccentric convex shaft with a proximal point and a distal point. The eccentric convex shaft abuts against the second end. When the spinning cover is in the unlocked position, the proximal point of the eccentric convex shaft abuts against the second end, and the first end does not press against the first circuit board. When the spinning cover is in the locked position, the distal point of the eccentric convex shaft abuts against the second end, the first moving arm rotates, and the first end presses against the first circuit board in a third direction.

[0015] In some embodiments, the first end is provided with a first engagement portion, the first contact portion includes a second engagement portion and a first arc-shaped portion, the first engagement portion and the second engagement portion are disposed opposite each other in a third direction, the first engagement portion engages with the upper surface of the first circuit board, the second engagement portion engages with the short contact portion, and the first arc-shaped portion abuts against the short contact portion.

[0016] In some embodiments, the electronic device includes a second circuit board, and a base is fixed to the second circuit board. Along a third direction, a first fixing part is spaced apart from the second circuit board. The first fixing part is not soldered to the second circuit board, which allows space and circuit layers on the second circuit board to be freed up, making it easier to solder the first terminal component to the traces on the second circuit board, reducing the number of circuit layers on the second circuit board. The spaced arrangement can also reduce signal interference from the first spun terminal to the first terminal component.

[0017] In some embodiments, the third terminal component includes at least one second spinning terminal, the second spinning terminal including a second fixing part, a second elastic part and a second moving arm, the second fixing part being detachably fixed to the base, the second elastic part being connected to the second fixing part and the second moving arm, and the spinning cover plate being connected to the second moving arm to drive the second moving arm to move.

[0018] In some embodiments, the second moving arm extends along a first direction and has a third end and a fourth end in the first direction. A second elastic portion is connected between the third end and the fourth end, and the third end is located in the first cavity. When the spinning cover is in the unlocked position, the proximal point of the eccentric cam abuts against the fourth end, and the third end does not press against the first circuit board. When the spinning cover is in the locked position, the distal point of the eccentric cam abuts against the fourth end, the second moving arm rotates, and the third end presses against the first circuit board in the third direction.

[0019] In some embodiments, the second spinning terminal further includes a first welding portion connected to the second fixing portion. The first welding portion is used to weld to the second circuit board and is grounded. The first circuit board includes a shielding layer, and the shielding layer and the circuit layer are respectively disposed on both sides of the substrate layer. When the spinning cover is in the locked position, the third end of the second spinning terminal abuts against the shielding layer and is grounded.

[0020] In some embodiments, the third end is provided with a third engagement portion, the second contact portion includes a fourth engagement portion and a second arcuate portion, the third engagement portion and the fourth engagement portion are disposed opposite each other in the third direction, the third engagement portion engages with the upper surface of the first circuit board, the fourth engagement portion engages with the long contact portion, and the second arcuate portion abuts against the long contact portion.

[0021] In some embodiments, along a first direction, a first spun terminal is disposed opposite to a first terminal component, and a second spun terminal is disposed opposite to a second terminal component.

[0022] In some embodiments, the third terminal component includes a snap-fit ​​terminal, which includes a third fixing part, a third elastic part, and a third moving arm. The third fixing part is detachably fixed to the base, and the third elastic part connects the third fixing part and the third moving arm. A swivel cover plate is connected to the third moving arm to drive the third moving arm to move. The third moving arm extends along a first direction and has a fifth end and a sixth end in the first direction. The third elastic part connects between the fifth end and the sixth end, and the fifth end is located in a first cavity. The fifth end is provided with a hook, and the first circuit board is provided with a fastening groove. When the swivel cover plate is in the locked position, the hook is fastened and fixed to the fastening groove.

[0023] In some embodiments, a pressing slope is provided on the lower side of the fifth end. When the spin-pressed cover is in the locked position, the pressing slope is in contact with the upper surface of the first circuit board, and the fifth end presses the first circuit board upward through the pressing slope.

[0024] In some embodiments, the swivel terminal further includes a second welding portion connected to the third fixing portion, the second welding portion being used for welding to the second circuit board.

[0025] Compared to the existing circuit board structure where the free ends of the circuit layer are aligned with the ends of the substrate layer, this application uses a spaced-out arrangement between the free ends of the circuit layer and the ends of the substrate layer. Specifically, the free ends of the circuit layer are appropriately retracted in the reverse direction of the first direction. When the first circuit board is inserted into the first cavity and the insertion end abuts against the first sidewall, the contacts of the terminal assembly located in the middle region of the first cavity can connect with the region of the free ends of the circuit layer. This minimizes the residual circuit portion between the contacts and the insertion end, thereby reducing the length of the circuit without current flow on the circuit layer. This significantly reduces the residual circuit effect, effectively suppresses signal reflection and crosstalk, and significantly improves the transmission quality of high-frequency signals. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0027] Figure 1 This is a schematic diagram showing the separation of the electrical connector device from the first circuit board in an electronic device according to an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the electrical connector device of the electronic device according to an embodiment of the present application being inserted into the first circuit board; Figure 3 This is a schematic diagram of the first circuit board of the electronic device according to an embodiment of this application; Figure 4 This is an exploded view of the electronic device according to an embodiment of this application; Figure 5 This is a schematic diagram of the first circuit board of an electronic device according to another embodiment of this application; Figure 6 This is a schematic diagram of the first circuit board of an electronic device according to another embodiment of this application; Figure 7 This is a sectional view of the electrical connector device and the first circuit board of an electronic device according to an embodiment of this application; Figure 8 This is a cross-sectional view of the electrical connector device of the electronic device according to an embodiment of this application being inserted into the first circuit board; Figure 9 This is an exploded view of the terminal assembly of the electronic device according to an embodiment of this application; Figure 10 This is an exploded view of the third terminal component of the electronic device according to an embodiment of this application; Figure 11 This is a cross-sectional view of the electronic device according to an embodiment of this application at the first spun terminal; Figure 12 This is a cross-sectional view of the electronic device according to an embodiment of this application at the second spinning terminal; Figure 13 This is a schematic diagram of an electrical connector device for an electronic device according to an embodiment of this application; Figure 14 This is a schematic diagram of the swivel terminal of the electronic device according to an embodiment of this application; Figure 15 This is a cross-sectional view of the electronic device according to an embodiment of this application at the swivel terminal; The attached icons are numbered as follows: 1000, Electronic equipment; X, First direction; Y, Second direction; Z, Third direction; 100. Electrical connector assembly; 10. Base; 11. First cavity; 12. First opening; 13. First sidewall; 20. Terminal assembly; 21. First terminal component; 211. First contact portion; 2111. Second engagement portion; 2112. First arc-shaped portion; 22. Second terminal component; 221. Second contact portion; 2211. Fourth engagement portion; 2212. Second arc-shaped portion; 23. Third terminal component; 231. First spinning terminal; 2311. First fixing part; 2312. First elastic part; 2313. First moving arm; 23131. First end; 23132. Second end; 23133. First engaging part; 232, Second spinning terminal; 2321, Second fixing part; 2322, Second elastic part; 2323, Second moving arm; 23231, Third end; 23232, Fourth end; 23233, Third engaging part; 2324, First welding part; 233, swivel terminal; 2331, third fixing part; 2332, third elastic part; 2333, third moving arm; 23331, fifth end; 23332, sixth end; 23333, hook part; 23334, pressing bevel; 2334, second welding part; 30. Spin-on cover plate; M1. Unlock position; M2. Locking position; 31. First rotating part; 32. Second rotating part; 33. Eccentric convex shaft; 331. Proximal point; 332. Distal point; 40. Second circuit board; 200, First circuit board; N1, Insertion end; 201, Substrate layer; 2011, Notch; 202, Circuit layer; 2021, Short contact portion; 2022, Long contact portion; 2023, Safety redundancy section; 203, Shielding layer; 204, Fastening groove. Detailed Implementation

[0029] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0031] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0032] Please see Figures 1 to 4 This application provides an electronic device 1000, which can be a laptop, tablet, smartphone, or other device requiring high-speed internal signal transmission. The electronic device 1000 includes an electrical connector assembly 100 and a first circuit board 200. As an example, the electrical connector assembly 100 includes a base 10 and a terminal assembly 20. For ease of description, the electronic device 1000 is defined with a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other.

[0033] Combination Figure 7 The base 10 has a first cavity 11, a first opening 12 communicating with the first cavity 11, and a first sidewall 13 defining a partial boundary of the first cavity 11. The first opening 12 and the first sidewall 13 are arranged opposite to each other in the first direction X. The first opening 12 is used for inserting the first circuit board 200 into the first cavity 11. The terminal assembly 20 is detachably disposed on the base 10, and a portion of the terminal assembly 20 is located within the first cavity 11. Along the first direction X, the contacts of the terminal assembly 20 are located between the first sidewall 13 and the first opening 12, which makes the clamping force when the first circuit board 200 contacts the terminal assembly 20 more balanced.

[0034] The first circuit board 200 has a plug-in end N1 at its end in the first direction X. The plug-in end N1 can be inserted into the first cavity 11 through the first opening 12 along the first direction X. Figure 8 As shown, when inserted into place, the insertion end N1 abuts against the first sidewall 13. (See reference...) Figure 3 The first circuit board 200 includes a substrate layer 201 and a circuit layer 202. Along a first direction X, at least a portion of the free ends of the circuit layer 202 are spaced apart from the ends of the substrate layer 201, and the contacts of the terminal assembly 20 are connected to the circuit layer 202.

[0035] Compared to the existing circuit board structure where the free end of the circuit layer 202 is aligned with the end of the substrate layer 201, this application sets the free end of the circuit layer 202 and the end of the substrate layer 201 at intervals, that is, the free end of the circuit layer 202 is appropriately retracted in the opposite direction of the first direction X. When the first circuit board 200 is inserted into the first cavity 11 and the insertion end N1 abuts against the first sidewall 13, the contact of the terminal assembly 20 located in the middle region of the first cavity 11 can connect with the region of the free end of the circuit layer 202. In this way, the residual circuit portion between the contact and the insertion end N1 is shortened to the maximum extent, thereby reducing the circuit length on the circuit layer 202 through which no current flows, which can significantly reduce the circuit stud effect, thereby effectively suppressing signal reflection and crosstalk, and significantly improving the transmission quality of high-frequency signals.

[0036] In some embodiments, please refer to Figures 5 to 9 The terminal assembly 20 includes a first terminal component 21 and a second terminal component 22 that are independent of each other. The circuit layer 202 includes a short contact 2021 and a long contact 2022 that are independent of each other, and the short contact 2021 and the long contact 2022 can transmit different types of signals respectively. Along the direction in which the first circuit board 200 is inserted relative to the base 10, that is, along the X direction, the free end of the long contact 2022 extends beyond the free end of the short contact 2021. That is, based on the same measurement reference line, the length of the long contact 2022 is greater than the length of the short contact 2021.

[0037] When the first circuit board 200 is inserted into the first cavity 11 of the base 10, and the insertion end N1 abuts against the first side wall 13, the first terminal component 21 abuts against the short contact portion 2021 to achieve electrical conduction, and the second terminal component 22 abuts against the long contact portion 2022 to achieve electrical conduction, thereby realizing signal transmission between the first circuit board 200 and the terminal assembly 20.

[0038] Compared to the existing technology where all circuit lines of the first circuit board 200 are of the same length, this application optimizes the design of the circuit lines in the first circuit board 200 by providing long contact portions 2022 and short contact portions 2021 of different lengths. Since the short contact portion 2021 is shorter, the residual circuit portion between the contact point of the short contact portion 2021 and the first terminal component 21 and the insertion end N1 of the first circuit board 200 is shortened to the maximum extent, thereby reducing the circuit length on the short contact portion 2021 through which no current flows. This can significantly reduce the circuit stud effect, thereby effectively suppressing signal reflection and crosstalk, and significantly improving the transmission quality of high-frequency signals.

[0039] As an example, circuit layer 202 can be obtained by etching a layer of metallic copper.

[0040] In some embodiments, the first terminal component 21 and the second terminal component 22 may have the same or different structures. The first terminal component 21 and the second terminal component 22 are arranged in a row in the second direction Y to facilitate contact with the first circuit board 200 to form an electrical connection.

[0041] In some embodiments, please refer to Figure 5 The insertion end N1 of the substrate layer 201 is flush, which facilitates the manufacturing of the substrate layer 201. The short contact portion 2021 and the long contact portion 2022 on the circuit layer 202 can be formed by pre-setting the position and area of ​​the etched copper layer, or by other known manufacturing methods to obtain short contact portions 2021 and long contact portions 2022 of different lengths.

[0042] In other embodiments, please refer to Figure 6 The substrate layer 201 has at least one notch 2011 at its end, and the notch 2011 is correspondingly disposed with the short contact portion 2021 in the first direction X. The design of the notch 2011 can reduce the length of the substrate layer 201 that supports the short contact portion 2021, reduce the influence of the dielectric material on high-frequency signals, and optimize the signal transmission environment.

[0043] In some embodiments, along the first direction X, the free end of the short contact portion 2021 is spaced apart from the edge of the notch 2011, which can prevent the free end of the short contact portion 2021 from short-circuiting due to exposure to external conductors or metals, thereby improving the safety of the first circuit board 200.

[0044] Of course, in other embodiments, please refer to Figure 6Along the first direction X, the free end of the short contact portion 2021 extends to the edge of the notch groove 2011 and ends. This is because during the fabrication of the first circuit board 200, a contact portion of the same length can be etched on the substrate layer 201 first, and then a portion of the contact portion and the substrate layer 201 can be cut together to form a notch. In this way, the long contact portion 2022 and the short contact portion 2021 can be obtained quickly, simplifying the manufacturing process of the first circuit board 200 and helping to reduce manufacturing difficulty and manufacturing cost.

[0045] In some embodiments, along the first direction X, the free end of the long contact portion 2022 is spaced apart from the end edge of the substrate layer 201, so that the long contact portion 2022 has a certain extension margin to adapt to different contact position requirements. At the same time, it can prevent the free end of the long contact portion 2022 from short-circuiting due to exposure to external conductors or metals, thereby improving the safety of the first circuit board 200.

[0046] Of course, in other embodiments, please refer to Figure 6 Along the first direction X, the free end of the long contact portion 2022 extends to the edge of the substrate layer 201. In mass production, the first circuit board 200 is usually in a flexible roll or a rigid strip shape. Several first circuit boards 200 are obtained by cutting the roll or strip shape. Therefore, the free end of the long contact portion 2022 will end at the edge of the substrate layer 201. This not only facilitates the formation of a regular contact area at the insertion end N1 of the first circuit board 200, which is beneficial to the accurate alignment of the terminals, but also simplifies the manufacturing process of the first circuit board 200, helping to reduce manufacturing difficulty and manufacturing cost.

[0047] As an example, the first circuit board 200 is an FFC circuit board, namely flexible flat cable. FFC circuit boards have the advantages of being thin, flexible, and having high wiring density, making them particularly suitable for signal connections in confined spaces. They also facilitate the cutting of notches 2011 at their plug-in ends N1.

[0048] As an example, the first circuit board 200 is an FPC circuit board, i.e., a flexible printed circuit board.

[0049] In some embodiments, the first terminal component 21 includes a high-speed signal terminal for transmitting high-frequency data signals. The second terminal component 22 includes, but is not limited to, a low-speed signal terminal, a power supply terminal, and a detection terminal. This physically separates the high-speed signal from the low-speed signal, the power supply signal, and the detection signal, reducing mutual electromagnetic interference and helping to maintain the integrity of the high-speed signal.

[0050] Furthermore, by abutting the high-speed signal terminal against the short contact portion 2021 of the first circuit board 200, as described above, since the structure of the short contact portion 2021 can reduce the residual effect of the circuit, the transmission of high-frequency data signals through the short contact portion 2021 can further improve the data transmission quality and reduce the probability of data defects and loss.

[0051] In some embodiments, please refer to Figures 7 to 9 The first terminal component 21 has a first contact portion 211, which abuts against the short contact portion 2021 of the first circuit board 200. The second terminal component 22 has a second contact portion 221, which abuts against the long contact portion 2022 of the first circuit board 200. The first contact portion 211 and the second contact portion 221 are arranged side by side along a second direction Y, that is, arranged in a row along the second direction Y, wherein the second direction Y is perpendicular to the first direction X.

[0052] On the one hand, this side-by-side layout makes the terminals compact, which is conducive to miniaturization of the electrical connector device 100 and provides an orderly interface for the wiring of the first circuit board 200 and the second circuit board 40 mentioned below. On the other hand, the first contact portion 211 and the second contact portion 221 arranged in a row correspond to the third terminal component 23, which is also arranged in a row in the second direction Y, mentioned below, in the third direction Z. This can improve the fixing effect on the first circuit board 200, thereby improving the stability of the conductive contact between the first contact portion 211 and the second contact portion 221 and the first circuit board 200.

[0053] In some embodiments, please refer to Figure 7 and Figure 8 Along the first direction X, the first contact portion 211 and the second contact portion 221 are approximately located in the middle region of the first cavity 11. This provides a more balanced support effect for the first circuit board 200 inserted into the first cavity 11, and avoids the support engagement position of the first circuit board 200 being too close to its insertion end N1, which would result in a poor effect of fixing and engaging the first circuit board 200.

[0054] like Figure 8 As shown, when the first circuit board 200 is inserted into the first cavity 11, the insertion end N1 of the first circuit board 200 abuts against the first sidewall 13 of the first cavity 11, making it easy for the operator to know that the first circuit board 200 has been inserted in place, and then operate the spin-on cover plate 30 mentioned below. Since the free end of the short contact portion 2021 is a certain distance from the insertion end N1 of the first circuit board 200, the first contact portion 211 can engage and abut against the free end of the short contact portion 2021 or the area near its free end. This can significantly eliminate the length of the circuit stud on the left side of the short contact portion 2021, thereby reducing electromagnetic interference caused by the signal return of the circuit stud.

[0055] In some embodiments, please refer to Figures 10 to 12 The electrical connector device 100 includes a swivel cover plate 30, which is rotatably connected to the base 10. The swivel cover plate 30 has an unlocked position M1 and a locked position M2 relative to the base 10 (e.g., ...). Figure 15 (As shown). The terminal assembly 20 includes a third terminal component 23, a portion of which is fixedly connected to the base 10, and a portion of which is located in the first cavity 11.

[0056] As an example, see Figure 4 Along the second direction Y, the spun cover plate 30 has a first rotating part 31 and a second rotating part 32 on both sides, and the spun cover plate 30 is rotatably connected to the base 10 through the first rotating part 31 and the second rotating part 32.

[0057] See Figure 11 Along the third direction Z, the third terminal component 23 is located above or diagonally above the second terminal component 22, and the first circuit board 200 is inserted between the second terminal component 22 and the third terminal component 23. The third terminal component 23 is connected to the spin-on cover plate 30, and when the spin-on cover plate 30 is in the locked position M2, the spin-on cover plate 30 drives the third terminal component 23 to press against the first circuit board 200. This spin-on cover plate 30 pressing structure is easy to operate, can provide stable and reliable clamping force, ensure good contact between the first circuit board 200 and the terminal assembly 20 below, and prevent poor contact due to vibration or pulling, which would affect the signal transmission quality.

[0058] In some embodiments, please refer to Figure 10 and Figure 11 The third terminal component 23 includes at least one first spun terminal 231, which is used to crimp to a first circuit board 200 inserted into the base 10. The first spun terminal 231 includes a first fixing portion 2311, a first elastic portion 2312, and a first moving arm 2313. The first fixing portion 2311 is detachably fixed to the base 10, providing a stable mounting base for the entire first spun terminal 231. The first elastic portion 2312 connects the first fixing portion 2311 and the first moving arm 2313, allowing the first moving arm 2313 to move elastically relative to the first fixing portion 2311. A spun cover plate 30 is connected to the first moving arm 2313 to drive its movement. This structure converts the rotational movement of the cover plate into the pressing movement of the moving arm, achieving reliable crimping of the first circuit board 200.

[0059] In some embodiments, please refer to Figure 11The first moving arm 2313 extends along the first direction X. The first moving arm 2313 has a first end 23131 and a second end 23132 in the first direction X. The first elastic part 2312 connects the first end 23131 and the second end 23132. The first moving arm 2313 and the first elastic part 2312 constitute a lever structure. The first end 23131 is located in the first cavity 11.

[0060] The spun cover plate 30 includes an eccentric convex shaft 33 on its side in the first direction X. The eccentric convex shaft 33 has a proximal point 331 and a distal point 332. The eccentric convex shaft 33 is in movable contact with the second end 23132. When the spun cover plate 30 is in the unlocked position M1, the proximal point 331 of the eccentric convex shaft 33 is in contact with the second end 23132. The first moving arm 2313 is in a generally horizontal position. The first end 23131 is not pressed against the first circuit board 200 in the third direction Z. When the spun cover plate 30 is rotated to the locked position M2, the distal point 332 of the eccentric cam 33 abuts against the second end 23132. Under the action of the first elastic part 2312, the first moving arm 2313 rotates, the second end 23132 rises, and the first end 23131 presses down along the third direction Z to press the first circuit board 200, thereby making the circuit layer 202 of the first circuit board 200 in stable contact with the first terminal component 21 and the second terminal component 22. This driving method using the principle of eccentric cam has a simple and compact structure, can efficiently convert rotational motion into linear pressing motion, and has good self-locking properties after locking, making it difficult to loosen.

[0061] In some embodiments, please refer to Figure 9 and Figure 11 The first end portion 23131 is provided with a first engagement portion 23133, and the first contact portion 211 includes a second engagement portion 2111 and a first arc-shaped portion 2112. The first engagement portion 23133 and the second engagement portion 2111 are arranged opposite to each other in the third direction Z. The first engagement portion 23133 engages with the upper surface of the first circuit board 200, the second engagement portion 2111 engages with the short contact portion 2021, and the first arc-shaped portion 2112 abuts against the short contact portion 2021. This "engagement + abutment" dual-point contact design ensures the reliability of the connection and avoids wear and poor contact caused by long-term pressing of a single contact point. The arc shape of the first arc-shaped portion 2112 also helps to reduce contact stress.

[0062] As an example, please refer to Figure 8 , Figure 8Arrow F1 in the diagram illustrates the transmission path of the current signal. The first engagement portion 23133 and the second engagement portion 2111 are sharp-toothed. Compared to the arc shape, the sharp-toothed first engagement portion 23133 and the second engagement portion 2111 can better engage and fix the upper and lower surfaces of the first circuit board 200, preventing the first circuit board 20 from loosening relative to the base 10 in the first direction X. This helps to improve the contact stability between the first arc-shaped portion 2112 and the short contact portion 2021, so that the current signal is mainly transmitted to the circuit layer 202 through the first arc-shaped portion 2112.

[0063] In addition, the first arc-shaped portion 2112 has a larger contact area with the short contact portion 2021, resulting in lower interface impedance. Furthermore, when the first arc-shaped portion 2112 and the short contact portion 2021 abut against each other in the third direction Z, the first arc-shaped portion 2112 limits the depth of engagement between the second engagement portion 2111 and the short contact portion 2021, preventing the short contact portion 2021 from being cut off or broken due to excessive engagement depth, thus helping to extend the service life of the first circuit board 200.

[0064] Of course, the second engaging portion 2111 not only has the function of engaging and fixing, but also has the function of transmitting signals with the short contact portion 2021. Together with the first arc-shaped portion 2112, it forms a two-point conductive structure to meet the high-speed signal current transmission requirements between the first terminal component 21 and the first circuit board 200. Of course, in other embodiments, the first terminal component 21 and the first circuit board 200 can also transmit low-speed signal current, detection signal current, power supply current, etc.

[0065] As an example, please refer to Figure 8 In the first direction X, the first arcuate portion 2112 is located on the side of the second engaging portion 2111 away from the free end of the short contact portion 2021, that is, in Figure 8 In the middle, the second biting part 2111 is on the left and the first arc-shaped part 2112 is on the right. This makes the second biting part 2111, which mainly plays the biting role, closer to the free end of the short contact part 2021 than the first arc-shaped part 2112. As shown by arrow F1, the current signal on the first terminal component 21 is mainly conducted to the short contact part 2021 through the first arc-shaped part 2112, and only a small part of the current signal is transmitted to the short contact part 2021 through the second biting part 2111. This can further shorten the length of the current signal flow path and speed up the signal transmission rate.

[0066] In some embodiments, please refer to Figure 8A safety redundancy section 2023 is provided between the free end of the short contact portion 2021 and the engagement point of the second engagement portion 2111. By reserving a certain length of safety redundancy section 2023, when the first circuit board 200 is pulled in the first direction X, it can be avoided that the second engagement point is just engaged at the free end of the short contact portion 2021, which would cause the engagement point to disengage during pulling, resulting in engagement failure and affecting the contact effect between the first arc-shaped portion 2112 and the short contact portion 2021. As an example, the length of the safety redundancy section 2023 along the first direction X is 0.1mm-5mm. As an example, the length of the safety redundancy section 2023 along the first direction X is 0.3mm-3mm.

[0067] In some embodiments, please refer to Figure 11 and Figure 13 The electronic device 1000 includes a second circuit board 40, and a base 10 is fixed to the surface of the second circuit board 40. First terminal components 21 and second terminal components 22, arranged in a row along the second direction Y, are both soldered to the second circuit board 40. Along the third direction Z, a first fixing part 2311 is spaced apart from the second circuit board 40, with a gap M3 between them; the first fixing part 2311 is not soldered to the second circuit board 40. The third direction Z is perpendicular to the plane containing the second circuit board 40.

[0068] As an example, the second circuit board 40 is a rigid PCB circuit board.

[0069] like Figure 8 and Figure 11 As shown, since the first circuit board 200 is inserted into the base 10 from right to left in the first direction X, according to design conventions, the right side of the second circuit board 40 is usually the edge end, and the base 10 is fixed at the right edge of the second circuit board 40. Therefore, the circuit on the second circuit board 40 extends to the left. In the first direction X, the third terminal component 23 is located to the left of the first terminal component 21 and the second terminal component 22. That is, the circuit board below the third terminal component 23 needs to be routed so that the first terminal component 21 and the second terminal component 22 can be soldered to the second circuit board 40.

[0070] In this application, the first fixing part 2311 of the first spun terminal 231 and the second circuit board 40 are spaced apart in the third direction Z. The first spun terminal 231 is not directly soldered to the second circuit board 40. This not only frees up space and reduces the number of circuit layers on the second circuit board 40, but also facilitates the soldering of the first terminal component 21 to the traces on the second circuit board 40, reducing the number of circuit layers on the second circuit board 40 and lowering manufacturing costs. At the same time, since the first spun terminal 231 usually includes metal material, which has electromagnetic interference to the high-speed signal pairs in the circuit of the second circuit board 40, the spaced arrangement helps to increase the distance between the first spun terminal 231 and the circuit traces on the second circuit board 40 in the third direction Z, thereby reducing the interference of the first spun terminal 231 to the current signal of the first terminal component 21, further improving the quality of high-speed signal transmission and enhancing high-frequency performance.

[0071] In some embodiments, along the first direction X, the position of the first spun terminal 231 corresponds to the position of the first terminal component 21. This makes it easier for the lines in the second circuit board 40 below the first spun terminal 231 that are electrically connected to the first terminal component 21 to be arranged in a straight line, reducing the difficulty of wiring and manufacturing.

[0072] In some embodiments, please refer to Figure 10 and Figure 12 The third terminal component 23 includes at least one second spun terminal 232, which is used to crimp to the first circuit board 200 inserted into the base 10. The second spun terminal 232 includes a second fixing portion 2321, a second elastic portion 2322, and a second moving arm 2323. The second fixing portion 2321 is detachably fixed to the base 10, providing a stable mounting base for the entire second spun terminal 232. The second elastic portion 2322 connects the second fixing portion 2321 and the second moving arm 2323. The spun cover plate 30 is connected to the second moving arm 2323 to drive the movement of the second moving arm 2323. This structure converts the rotational movement of the cover plate into the pressing movement of the moving arm, achieving reliable crimping of the first circuit board 200.

[0073] In some embodiments, please refer to Figure 12 The second moving arm 2323 extends along the first direction X. The second moving arm 2323 has a third end 23231 and a fourth end 23232 in the first direction X. The second elastic part 2322 is connected between the third end 23231 and the fourth end 23232. The second moving arm 2323 and the second elastic part 2322 form a lever structure. The third end 23231 is located in the first cavity 11. The eccentric convex shaft 33 of the spinning cover plate 30 is in movable contact with the fourth end 23232.

[0074] When the spun cover plate 30 is in the unlocked position M1, the proximal point 331 of the eccentric cam 33 abuts against the fourth end 23232, the second moving arm 2323 is approximately horizontal, and the third end 23231 does not press the first circuit board 200 along the third direction Z. When the spun cover plate 30 rotates to the locked position M2, the distal point 332 of the eccentric cam 33 abuts against the fourth end 23232. Under the action of the second elastic part 2322, the second moving arm 2323 rotates, the fourth end 23232 rises, and the third end 23231 presses down along the third direction Z to press the first circuit board 200, thereby making the circuit layer 202 of the first circuit board 200 stably contact the first terminal component 21 and the second terminal component 22. This drive method using the eccentric cam principle has a simple and compact structure, can efficiently convert rotational motion into linear pressing motion, and has good self-locking properties after locking, making it difficult to loosen.

[0075] In some embodiments, please refer to Figure 12 and Figure 13 The second spun terminal 232 also includes a first soldering portion 2324 connected to the second fixing portion 2321. The first soldering portion 2324 is used for soldering to the second circuit board 40 and grounding, providing a grounding path for the entire electrical connector assembly 100. Figure 7 The first circuit board 200 includes a shielding layer 203. The shielding layer 203 and the circuit layer 202 are respectively disposed on both sides of the substrate layer 201. When the spin-forming cover plate 30 is in the locked position M2, the third end 23231 of the second spin-forming terminal 232 abuts against the shielding layer 203 and is grounded. In this way, the shielding layer 203 of the first circuit board 200 is connected to the ground terminal of the second circuit board 40 through the second spin-forming terminal 232, providing effective electromagnetic shielding for high-speed signal transmission and improving the overall anti-interference capability.

[0076] In this application, the first spinning terminal 231 and the second spinning terminal 232 have similar structures. The main difference is that the second spinning terminal 232 has a first welding part 2324, which makes the second spinning terminal 232 not only have the function of pressing the first circuit board 200, but also have the function of grounding connection with the second circuit board 40.

[0077] In some embodiments, please refer to Figure 9 and Figure 12The third end 23231 is provided with a third engagement portion 23233, and the second contact portion 221 includes a fourth engagement portion 2211 and a second arc-shaped portion 2212. The third engagement portion 23233 and the fourth engagement portion 2211 are arranged opposite to each other in the third direction Z. The third engagement portion 23233 engages with the upper surface of the first circuit board 200, the fourth engagement portion 2211 engages with the long contact portion 2022, and the second arc-shaped portion 2212 abuts against the long contact portion 2022. Similar to the first spinning terminal 231, the second spinning terminal 232 also adopts a "engagement + abutment" dual-point contact design to ensure the reliability and durability of the connection between the second contact portion 221 and the long contact portion 2022.

[0078] As an example, the third engagement portion 23233 and the fourth engagement portion 2211 are sharp teeth. Compared with the arc shape, the third engagement portion 23233 and the fourth engagement portion 2211 can better fix the upper and lower surfaces of the first circuit board 200, preventing the first circuit board 20 from loosening relative to the base 10 in the first direction X. This helps to improve the contact stability between the second arc-shaped portion 2212 and the long contact portion 2022, so that the current signal is mainly transmitted to the circuit layer 202 through the second arc-shaped portion 2212.

[0079] In addition, the second arc-shaped portion 2212 has a larger contact area with the long contact portion 2022, resulting in a smaller interface impedance. Furthermore, when the second arc-shaped portion 2212 and the long contact portion 2022 abut against each other in the third direction Z, the second arc-shaped portion 2212 limits the depth of engagement between the fourth engagement portion 2211 and the long contact portion 2022, preventing the long contact portion 2022 from being cut off or broken due to excessive engagement depth, thus helping to extend the service life of the first circuit board 200.

[0080] Of course, the fourth engagement portion 2211 not only has the function of engagement and fixation, but also has the function of signal transmission with the long contact portion 2022. Together with the second arc-shaped portion 2212, it forms a two-point conductive structure to meet the transmission requirements of high-speed signal current, low-speed signal current, detection signal current, power supply current and other requirements between the second terminal component 22 and the first circuit board 200.

[0081] In some embodiments, please refer to Figure 4 Along the first direction X, the first spinning terminal 231 is positioned opposite to the first terminal component 21, such that the clamping force of the first spinning terminal 231 can directly act on the contact area between the first terminal component 21 and the short contact portion 2021. The second spinning terminal 232 is positioned opposite to the second terminal component 22, such that the clamping force of the second spinning terminal 232 can directly act on the contact area between the second terminal component 22 and the long contact portion 2022. This corresponding arrangement optimizes the force transmission path and ensures that each contact area receives effective clamping force.

[0082] In some embodiments, please refer to Figure 4 , Figure 14 and Figure 15 The third terminal component 23 includes a snap-fit ​​terminal 233, which includes a third fixing part 2331, a third elastic part 2332, and a third moving arm 2333. The third fixing part 2331 is detachably fixed to the base 10 to achieve overall fixation of the snap-fit ​​terminal 233 relative to the base 10. The third elastic part 2332 connects the third fixing part 2331 and the third moving arm 2333. The screw-press cover plate 30 is connected to the third moving arm 2333 to drive the third moving arm 2333 to move.

[0083] The third moving arm 2333 extends along the first direction X. The third moving arm 2333 has a fifth end 23331 and a sixth end 23332 in the first direction X. The third elastic part 2332 is connected between the fifth end 23331 and the sixth end 23332, so that the third moving arm 2333 forms a lever structure. The fifth end 23331 is located in the first cavity 11, and the sixth end (23332) is connected to the eccentric convex shaft (33) of the spinning cover plate (30).

[0084] The fifth end 23331 is provided with a hook 23333, and the first circuit board 200 is provided with a fastening groove 204. When the swivel cover plate 30 is in the unlocked position M1, the hook 23333 separates from the fastening groove 204, without affecting the insertion or removal of the first circuit board 200 relative to the base 10. When the swivel cover plate 30 is in the locked position M2, the hook 23333 engages and is fixed with the fastening groove 204 to fix the first circuit board 200 relative to the base 10. This hook and latch structure provides additional mechanical locking force, which can effectively prevent the first circuit board 200 from loosening due to accidental pulling, greatly enhancing the reliability of the connection.

[0085] In some embodiments, please refer to Figure 14 and Figure 15The fifth end 23331 has a pressing slope 23334 on its lower side. When the cover plate 30 is in the unlocked position M1 and the third moving arm 2333 is in a horizontal position, the pressing slope 23334 is inclined. When the cover plate 30 is in the locked position M2, the third moving arm 2333 rotates, causing the pressing slope 23334 to fit against the upper surface of the first circuit board 200. In this way, the fifth end 23331 presses the first circuit board 200 in the third direction Z through the pressing slope 23334. The design of the pressing slope 23334 makes the pressing force distribution more uniform, avoids excessive local stress, and increases the contact area, further improving the pressing stability. By setting the hook 23333 and the pressing slope 23334 on the fifth end 23331, not only can the first circuit board 200 be mechanically locked, but it can also have a pressing effect on the first circuit board 200 in the third direction Z, making the force more balanced.

[0086] In some embodiments, the snap-fit ​​terminal 233 further includes a second welding portion 2334 connected to the third fixing portion 2331, the second welding portion 2334 being used for welding to the second circuit board 40. By welding the snap-fit ​​terminal 233 to the second circuit board 40 through the second welding portion 2334, the connection strength between the base 10 and the second circuit board 40 can be further improved, thereby enhancing the mechanical strength of the entire electrical connector device 100 and making it more stable and reliable.

[0087] It is understandable that the second welding part 2334 can be welded only to the second circuit board 40 to achieve mechanical fixation. The second welding part 2334 can also be welded to the grounding terminal of the second circuit board 40. While achieving mechanical fixation, the snap-on terminal 233 is also grounded. When the hook part 23333 of the fifth end 23331 is fastened to the snap-on groove 204, the hook part 23333 contacts the shielding layer 203 of the first circuit board 200, thereby achieving the grounding connection of the shielding layer 203 and improving the electromagnetic shielding effect.

[0088] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An electronic device, characterized in that, include: An electrical connector device includes a base and a terminal assembly, the base having a first cavity, a first opening communicating with the first cavity, and a first sidewall defining a partial boundary of the first cavity, the first opening and the first sidewall being disposed opposite to each other in a first direction; The terminal assembly is detachably disposed on the base, and a portion of the terminal assembly is located within the first cavity. Along the first direction, the contacts of the terminal assembly are located between the first sidewall and the first opening. A first circuit board has a plug-in end in the first direction, the plug-in end being insertable into the first cavity through the first opening along the first direction, the plug-in end abutting against the first sidewall, the first circuit board including a substrate layer and a circuit layer, along the first direction, at least a portion of the free end of the circuit layer being spaced apart from the end of the substrate layer, and the contacts of the terminal assembly being connected to the circuit layer.

2. The electronic device according to claim 1, characterized in that, The terminal assembly includes a first terminal component and a second terminal component that are independent of each other; The circuit layer includes independent short contact portions and long contact portions. Along the direction in which the first circuit board is inserted relative to the base, the free end of the long contact portion extends beyond the free end of the short contact portion. When the first circuit board is inserted into the base, the first terminal component abuts against the short contact portion, and the second terminal component abuts against the long contact portion.

3. The electronic device according to claim 2, characterized in that, The ends of the substrate layer are flush. or, The end of the substrate layer is provided with at least one notch, and in the first direction, the notch is provided corresponding to the short contact portion.

4. The electronic device according to claim 3, characterized in that, Along the first direction, the free end of the short contact portion is spaced apart from the edge of the notch. or, Along the first direction, the free end of the short contact portion extends to the edge of the notch groove and ends there.

5. The electronic device according to claim 4, characterized in that, Along the first direction, the free end of the long contact portion is spaced apart from the end edge of the substrate layer; or, Along the first direction, the free end of the long contact portion extends to the end edge of the substrate layer and ends.

6. The electronic device according to any one of claims 2-5, characterized in that, The first terminal component has a first contact portion, and the second terminal component has a second contact portion. The first contact portion and the second contact portion are arranged side by side along a second direction, which is perpendicular to the first direction.

7. The electronic device according to claim 6, characterized in that, The first terminal component includes a high-speed signal terminal, and the second terminal component includes at least one of a low-speed signal terminal, a power supply terminal, and a detection terminal.

8. The electronic device according to claim 7, characterized in that, The first circuit board is an FFC circuit board, or the first circuit board is an FPC circuit board.

9. The electronic device according to claim 6, characterized in that, The electrical connector device includes a spun cover plate, which is rotatably connected to the base, and the spun cover plate has an unlocked position and a locked position relative to the base; The terminal assembly includes a third terminal component, a portion of which is fixedly connected to the base. The portion of the third terminal component is located in the first cavity along a third direction. The third terminal component is located above the second terminal component. The first circuit board is inserted between the second terminal component and the third terminal component. The first direction, the second direction, and the third direction are perpendicular to each other. The third terminal component is connected to the spun cover plate, and when the spun cover plate is in the locked position, the spun cover plate drives the third terminal component to press against the first circuit board.

10. The electronic device according to claim 9, characterized in that, The third terminal component includes at least one first spinning terminal. The first spinning terminal includes a first fixing part, a first elastic part, and a first moving arm. The first fixing part is detachably fixed to the base. The first elastic part connects the first fixing part and the first moving arm. The spinning cover plate is connected to the first moving arm to drive the first moving arm to move.

11. The electronic device according to claim 10, characterized in that, The first moving arm extends along the first direction, and the first moving arm has a first end and a second end in the first direction. The first elastic part is connected between the first end and the second end, and the first end is located in the first cavity. The spun cover plate includes an eccentric convex shaft with a proximal point and a distal point. The eccentric convex shaft abuts against the second end. When the spun cover plate is in the unlocked position, the proximal point of the eccentric convex shaft abuts against the second end, and the first end does not press against the first circuit board. When the spun cover plate is in the locked position, the distal point of the eccentric convex shaft abuts against the second end, the first moving arm rotates, and the first end presses against the first circuit board in a third-order upward direction.

12. The electronic device according to claim 11, characterized in that, The first end is provided with a first engagement portion, the first contact portion includes a second engagement portion and a first arc-shaped portion, the first engagement portion and the second engagement portion are arranged opposite to each other in the third direction, the first engagement portion engages with the upper surface of the first circuit board, the second engagement portion engages with the short contact portion, and the first arc-shaped portion abuts against the short contact portion.

13. The electronic device according to claim 11, characterized in that, The electronic device includes a second circuit board, and the base is fixed to the second circuit board; Along the third direction, the first fixing part and the second circuit board are spaced apart.

14. The electronic device according to claim 13, characterized in that, The third terminal component includes at least one second spinning terminal. The second spinning terminal includes a second fixing part, a second elastic part, and a second moving arm. The second fixing part is detachably fixed to the base. The second elastic part connects the second fixing part and the second moving arm. The spinning cover plate is connected to the second moving arm to drive the second moving arm to move.

15. The electronic device according to claim 14, characterized in that, The second moving arm extends along the first direction, and the second moving arm has a third end and a fourth end in the first direction. The second elastic part is connected between the third end and the fourth end, and the third end is located in the first cavity. When the spun cover is in the unlocked position, the proximal point of the eccentric convex shaft abuts against the fourth end, and the third end does not press against the first circuit board. When the spun cover is in the locked position, the distal point of the eccentric convex shaft abuts against the fourth end, the second moving arm rotates, and the third end presses against the first circuit board in the third direction.

16. The electronic device according to claim 15, characterized in that, The second spinning terminal also includes a first welding part connected to the second fixing part, the first welding part being used for welding to the second circuit board and grounded; The first circuit board includes a shielding layer, and the shielding layer and the circuit layer are respectively disposed on both sides of the substrate layer. When the spin-forming cover is in the locked position, the third end of the second spin-forming terminal abuts against the shielding layer and is grounded.

17. The electronic device according to claim 15, characterized in that, The third end is provided with a third engagement portion, and the second contact portion includes a fourth engagement portion and a second arc-shaped portion. The third engagement portion and the fourth engagement portion are arranged opposite each other in the third direction. The third engagement portion engages with the upper surface of the first circuit board, the fourth engagement portion engages with the long contact portion, and the second arc-shaped portion abuts against the long contact portion.

18. The electronic device according to claim 14, characterized in that, Along the first direction, the first spun terminal is disposed opposite to the first terminal component, and the second spun terminal is disposed opposite to the second terminal component.

19. The electronic device according to claim 13, characterized in that, The third terminal component includes a snap-fit ​​terminal, which includes a third fixing part, a third elastic part, and a third moving arm. The third fixing part is detachably fixed to the base, and the third elastic part connects the third fixing part and the third moving arm. The screw-press cover plate is connected to the third moving arm to drive the third moving arm to move. The third moving arm extends along the first direction, and the third moving arm has a fifth end and a sixth end in the first direction. The third elastic part is connected between the fifth end and the sixth end, and the fifth end is located in the first cavity. The fifth end is provided with a hook, and the first circuit board is provided with a fastening groove. When the spun cover is in the locked position, the hook is fastened and fixed with the fastening groove.

20. The electronic device according to claim 19, characterized in that, The fifth end has a pressing slope on its lower side. When the spin-pressed cover is in the locked position, the pressing slope is in contact with the upper surface of the first circuit board, and the fifth end presses the first circuit board in the third direction through the pressing slope.

21. The electronic device according to claim 19, characterized in that, The swivel terminal also includes a second welding part connected to the third fixing part, the second welding part being used for welding to the second circuit board.

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