Anti-loosening structure and electronic device

Abstract

The present disclosure provides a loosening prevention structure and an electronic device, and relates to the technical field of electronic device structures. The loosening prevention structure comprises a shell, a circuit board, and a reinforcing connection structure. The shell comprises a panel and a back cover, and the panel and the back cover are combined to form a containing cavity. The circuit board is arranged in the containing cavity. The circuit board comprises a first electric connector and a second electric connector arranged adjacently. The first side of the first electric connector has a first connecting pin extending outward. The second side of the second electric connector has a second connecting pin extending outward. The reinforcing connection structure is arranged between the second side of the first electric connector and the first side of the second electric connector. The outward extending directions of the first connecting pin and the second connecting pin are opposite.

Description

Technical Field

[0001] This disclosure belongs to the field of electronic device structure technology, and particularly relates to an anti-loosening structure and an electronic device having the same. Background Technology

[0002] In building intercom and security alarm systems, intercom units and other equipment are typically deployed in public areas, and their installation and subsequent wiring maintenance are mostly handled by construction personnel. In such on-site environments, operators often engage in non-standard and forceful plugging and unplugging operations on the external interfaces of the equipment due to efficiency concerns or habitual practices. This can easily damage the solder pads on the circuit board or loosen components, thus affecting the normal operation of the equipment. Utility Model Content

[0003] To address at least one of the aforementioned technical problems, this disclosure provides an anti-loosening structure and an electronic device having the same, thereby ensuring the stability of the connection between the device and the circuit board and reducing the occurrence of pad damage or device loosening caused by plugging and unplugging operations.

[0004] In one aspect of this disclosure, an anti-loosening structure is provided, comprising: a housing, the housing including a front panel and a rear cover, the front panel and the rear cover being closed to form a receiving cavity; a circuit board disposed within the receiving cavity, the circuit board including at least a first electrical connector and a second electrical connector disposed adjacent to each other, the first electrical connector having a first connecting pin extending outward on a first side, the second connector having a second connecting pin extending outward on a second side, and a reinforcing connection structure being provided between the second side of the first electrical connector and the first side of the second electrical connector, wherein the outward extending directions of the first connecting pin and the second connecting pin are opposite.

[0005] According to the anti-loosening structure provided in this disclosure, a reinforcing connection structure is provided between two adjacent electrical connectors, and the sides of the two connectors with connecting pins are arranged back-to-back. When the cables connected to the electrical connectors are subjected to insertion or removal forces in different directions simultaneously or separately, the back-to-back pin arrangement can disperse or partially cancel out the forces. The reinforcing connection structure between the two electrical connectors provides crucial support and tensile buffering, dispersing and absorbing the concentrated stress that would otherwise act directly on the solder joints of a single electrical connector. This improves the overall tensile strength and reliability of the electrical connector interface, ensures the stability of the connection between the electrical connector and the circuit board, and reduces the occurrence of pad damage or component loosening caused by insertion or removal operations.

[0006] According to at least one embodiment of the anti-loosening structure of the present disclosure, a first through hole is provided on the back cover to expose the power supply connector, and a first protrusion extends inward from the edge of the first through hole; when the back cover is closed on the panel, the first protrusion presses against the first connection pin and the second connection pin.

[0007] According to at least one embodiment of the anti-loosening structure of the present disclosure, the first protrusion extends from one end of the first electrical connector or the second electrical connector to the other end in an outward extending direction perpendicular to the first connection pin or the second connection pin.

[0008] According to at least one embodiment of the anti-loosening structure of the present disclosure, the reinforcing connection structure is a gel material structure filled between the first electrical connector and the second electrical connector, or a gel material structure between the first electrical connector, the second electrical connector and the circuit board.

[0009] According to at least one embodiment of the anti-loosening structure of the present disclosure, the reinforcing connection structure is a reinforcing member disposed between the first electrical connector and the second electrical connector, the reinforcing member being used to connect the first electrical connector and the second electrical connector.

[0010] According to at least one embodiment of the anti-loosening structure of the present disclosure, a power socket is also provided on the circuit board, and a second through hole for the power socket to be exposed is provided on the back cover. A boss is provided on at least one side of the power socket, and a second protrusion extends inward from the edge of the second through hole. The second protrusion can press against the boss when the back cover is closed on the panel.

[0011] According to at least one embodiment of the anti-loosening structure of the present disclosure, protrusions are provided on both sides of the power socket.

[0012] According to at least one embodiment of the anti-loosening structure of this disclosure, the boss and the power supply base are integrally injection molded.

[0013] According to at least one embodiment of the anti-loosening structure of the present disclosure, a mesh seat is also provided on the circuit board; a third through hole is provided on the back cover for exposing the mesh seat; the diameter of the third through hole is smaller than the outer diameter of the mesh seat, so that it is partially pressed against the upper surface of the mesh seat.

[0014] In another aspect of this disclosure, an electronic device is provided that includes an anti-loosening structure as described in any of the above embodiments. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0016] Figure 1A schematic diagram of an anti-loosening structure according to one embodiment of the present disclosure is shown.

[0017] Figure 2 It shows Figure 1 A schematic diagram of the structure after removing the back cover.

[0018] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 A schematic diagram of the structure of a back cover according to one embodiment of the present disclosure is shown.

[0020] Figure 5 It shows Figure 1 A structural diagram from another perspective.

[0021] Figure 6 It shows Figure 5 A cross-sectional view along the AA direction.

[0022] Figure 7 It shows Figure 6 A magnified view of a portion of point B in the middle.

[0023] Figure 8 It shows Figure 5 A cross-sectional view along the BB direction.

[0024] Figure 9 It shows Figure 8 A magnified view of a portion of point C.

[0025] Explanation of reference numerals in the attached figures Housing 100; Panel 110; Rear cover 120; First through hole 121; First protrusion 121-A; Second through hole 122; Second protrusion 122-A; Third through hole 123; Circuit board 200; Electrical connector 210; Reinforced connection structure 220; Power socket 230; Boss 231; Network port socket 240. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0027] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0029] The use of crosshairs and / or shading in the accompanying drawings is generally used to clarify the boundaries between adjacent components. Thus, unless otherwise stated, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for the specific material, material properties, dimensions, proportions, commonalities between the illustrated components, or any other characteristics, properties, etc., of the components. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0030] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0031] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0032] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0033] In the deployment and subsequent maintenance of building intercom and security alarm systems, intercom main units and other equipment need to be installed in 86-type junction boxes or similar confined spaces. Installation, debugging, and wiring maintenance are typically performed by on-site construction personnel. Due to efficiency concerns or operational habits, these personnel often perform improper and forceful plugging and unplugging operations on external interfaces such as network ports (e.g., RJ45), power ports, and electrical connectors. This operating environment poses a severe challenge to the mechanical strength and reliability of the equipment interfaces.

[0034] Currently, conventional designs for the interfaces of such devices are ill-suited to the harsh field conditions described above, exhibiting significant technical deficiencies. Specifically, existing designs generally employ surface mount technology (SMT) soldering, which limits the bonding strength between the solder pads and the printed circuit board (PCB). When subjected to excessive or non-axial insertion / removal forces, the solder pads are highly susceptible to detachment or component loosening, resulting in irreversible hardware damage.

[0035] The aforementioned issues result in a persistently high failure rate for the equipment during on-site installation and maintenance. Once an interface is damaged, it is often impossible to repair it on-site, requiring the replacement of the entire circuit board. This not only incurs high material and labor costs and prolongs the project timeline, severely impacting the user experience, but also places continuous after-sales pressure on the manufacturer and damages its brand reputation.

[0036] To address this, this disclosure provides an anti-loosening structure and an electronic device having the same. A reinforcing connection structure is provided between two adjacent electrical connectors, with the sides of the connectors having connection pins facing away from each other. When cables connected to the electrical connectors are subjected to simultaneous or separate insertion / removal forces in different directions, the back-facing pin arrangement allows the forces to be dispersed or partially canceled out. The reinforcing connection structure between the two electrical connections provides crucial support and tensile buffering, dispersing and absorbing the concentrated stress that would otherwise act directly on the solder joints of a single electrical connector. This improves the overall tensile strength and reliability of the connector interface, ensures the stability of the connection between the connector and the circuit board, and reduces the occurrence of pad damage or component loosening caused by insertion / removal operations.

[0037] This disclosure provides an anti-loosening structure, such as Figure 1-3 As shown, the anti-loosening structure includes a housing 100 and a circuit board 200, and is designed to solve the technical problem of interface damage caused by violent plugging and unplugging during construction.

[0038] Specifically, the housing 100 serves as the external support and protective structure of the device, and includes a front panel 110 and a rear cover 120. The front panel 110 is typically the front of the device and may house components such as a display screen and control buttons. The rear cover 120 can be screwed or clipped to engage with the front panel 110 to form a sealed or semi-sealed cavity for installing internal components.

[0039] It should be noted that the panel 110 and the back cover 120 can be made of engineering plastics such as ABS and PC through injection molding process, and have sufficient strength and flame retardancy. Their shape is not limited to square, and can be round, arc or other shapes according to the product appearance design.

[0040] The circuit board 200 is fixedly installed within the cavity formed by the front panel 110 and the rear cover 120, and serves as the control center of the device. Various electronic components can be soldered onto the circuit board 200. Generally, the circuit board 200 can be fixed inside the housing 100 by screw posts or slots to prevent the device from shifting.

[0041] The circuit board 200 includes two adjacent electrical connectors 210, which may be interface elements (e.g., zone terminals) soldered onto the circuit board 200 for connecting cables. Each electrical connector 210 has connection pins extending outward on one side for soldering to the circuit board 200. The sides of the two adjacent electrical connectors 210 with connection pins are back-to-back. For example, as... Figure 3 As shown, the connection pins of one electrical connector 210 are positioned to the right, and the connection pins of the other electrical connector 210 are positioned to the left, so that the two are arranged in a "non" shape.

[0042] For example, see Figure 3 The electrical connector on the left in the diagram can be considered the first electrical connector, and the electrical connector on the right can be considered the second electrical connector. The left side of the first electrical connector is considered its first side, and the right side is considered its second side. The left side of the second electrical connector is considered its first side, and the right side is considered its second side. The first side of the first electrical connector has a first connecting pin that extends to the left. The second side of the second electrical connector has a second connecting pin that extends to the right. The first and second connecting pins extend in opposite directions.

[0043] A reinforcing connection structure 220 is also provided between adjacent electrical connectors 210. This reinforcing connection structure 220 is used to physically connect and support the two electrical connectors 210, so that they form an integral tensile module. The reinforcing connection structure 220 is located between the second side of the first electrical connector and the first side of the second electrical connector.

[0044] Thus, when the cable connected to the electrical connector 210 is subjected to insertion or removal forces in different directions simultaneously or separately, the back-to-back pin layout can disperse or partially cancel out the insertion and removal forces. The reinforcing connection structure 220 located between the two electrical connections can provide crucial support and tensile buffering, dispersing and absorbing the concentrated stress that was originally applied directly to the solder joint of the individual electrical connector 210. This improves the overall tensile strength and reliability of the interface of the electrical connector 210, ensures the stability of the connection between the electrical connector 210 and the circuit board 200, and reduces the occurrence of pad damage or component loosening caused by insertion and removal operations.

[0045] like Figure 1 , Figure 4-7 As shown, in one embodiment of this disclosure, the back cover 120, corresponding to the position of the electrical connector 210, has a first through hole 121. The shape and size of the first through hole 121 are adapted to the outer contour of the electrical connector 210, allowing the power connector 210 to be exposed for easy insertion of external cables. A first protrusion 121-A extends inward from the edge of the first through hole 121. It should be noted that "inward" here refers to facing the inside of the device, and when the back cover 120 is closed, it faces the circuit board 200. The height of the first protrusion 121-A ensures that after the back cover 120 is fully closed, the first protrusion 121-A can be firmly pressed against the connection pins of the electrical connector 210, preventing the connection pins of the electrical connector 210 from falling off the circuit board 200 under external force. The first protrusion 121-A can provide pressure against both the first and second connection pins.

[0046] In actual use, when an external cable is forcibly pulled outward, the pulling force will act on the interface end of the electrical connector 210, attempting to pull it off the circuit board 200. At this time, the first protrusion 121-A on the back cover 120, acting as a "stop block," will immediately apply a reverse force to the connection pins of the electrical connector 210, preventing the electrical connector 210 from moving upward and thus preventing the connection pins of the electrical connector 210 from falling off the circuit board 200.

[0047] In one example, the cross-sectional shape of the first protrusion 121-A can be rectangular, trapezoidal, or semi-circular, etc., and its end near the electrical connector 210 can be set as a bevel or arc surface to press the electrical connector 210 when the back cover 120 is closed. In addition, the first protrusion 121-A can be integrally injection molded with the back cover 120 as the same structural component, ensuring optimal mechanical properties and assembly reliability without the need for additional parts and assembly steps.

[0048] like Figure 6 , Figure 7 As shown, in one embodiment, the first protrusion 121-A extends from one end of the first electrical connector to the other end along an outward extending direction perpendicular to the first or second connecting pin, thereby achieving full clamping of the connecting pin on one side of the electrical connector 210. This increases the contact area between the first protrusion 121-A and the connecting pin, preventing breakage of a single connecting pin due to excessive force while ensuring effective clamping.

[0049] In some embodiments of this disclosure, the reinforcing connection structure 220 may be a gel material structure filled between two adjacent electrical connectors 210, which can bond two separate connectors into a whole. The gel material structure may also be disposed between two adjacent electrical connectors 210 to bond the bottom of the electrical connector 210 to the surface of the circuit board 200.

[0050] Thus, the reinforced connection structure 220 can connect adjacent electrical connectors 210 or electrical connectors 210 and circuit boards 200 into a whole. When any electrical connector 210 is subjected to external force, the force will be quickly dispersed to adjacent electrical connectors 210 or circuit boards 200 through the adhesive material, avoiding stress concentration in a localized area and improving the anti-loosening effect of the electrical connectors 210. Preferably, both of the above bonding methods can be implemented simultaneously to ensure the best reinforcement effect.

[0051] In some embodiments of this disclosure, the reinforcing connection structure 220 can also be an independent reinforcing component, which can be disposed between two adjacent electrical connectors 210 for connecting the two adjacent electrical connectors 210, thereby coupling the two adjacent electrical connectors 210 into a whole to jointly resist external forces. It should be noted that the connection method between the reinforcing component and the electrical connector 210 can include, but is not limited to, snap-fit ​​connection (i.e., quick installation and locking through elastic snap-fit), interference fit (i.e., the size of the reinforcing component is slightly smaller than the installation space, and friction is generated to achieve fastening after pressing it between the two adjacent electrical connectors 210), or screw connection (i.e., fastening to the electrical connector 210 with screws).

[0052] In one example, the reinforcing member may have snap-fit ​​or spring clips on both sides, and the side of the electrical connector 210 without connection pins may have a mating structure, allowing the reinforcing member to lock the two electrical connectors 210 from both sides respectively. In another example, the two ends of the reinforcing member may also be connected to pre-drilled threaded holes on the housings of the two electrical connectors 210 by screws, forming a rigid connection.

[0053] like Figure 2 , Figure 4-5 , Figure 8-9 As shown, in some embodiments of this disclosure, a power socket 230 is also provided on the circuit board 200. The power socket 230 is soldered onto the circuit board and can be used to connect an external power adapter plug. At least one side of the power socket 230 is provided with a boss 231, which can be integrally injection molded with the power socket 230 to ensure structural strength. The boss 231 can be a platform, a lug, or a rib, etc., and its cross-section can be rectangular, trapezoidal, or semi-circular, thereby providing a stable pressure-bearing surface.

[0054] A second through hole 122 is provided on the back cover 120 at the position corresponding to the power socket 230. The size and shape of the second through hole 122 are adapted to the outer contour of the power socket 230 to allow the power plug to be inserted into the power socket 230. A second protrusion 122-A extends inward from the edge of the second through hole 122. This second protrusion 122-A can accurately correspond to and form abutment with the protrusion 231 on the power socket 230 when the back cover 120 is closed on the panel 110. It should be understood that the contact surface between the second protrusion 122-A and the protrusion 231 can be designed as a plane to provide maximum contact area and support stability. Similarly, the second protrusion 122-A can be integrally injection molded with the back cover 120 to ensure structural integrity and production efficiency.

[0055] Therefore, when the external power cord is pulled, the pulling force acts on the power socket 230, attempting to pull it upwards. At this time, the second protrusion 122-A on the back cover 120 can apply a downward reaction force to the protrusion 231 of the power socket 230. This reaction force effectively prevents any upward displacement tendency of the power socket 230, thereby preventing the solder pads of the power socket 230 from falling off.

[0056] It should be noted that the boss 231 can be provided on one side, both sides, or around the entire circumference of the power socket 230. In one example, the power socket 230 is provided on both sides, which can balance the force on the power socket 230 and prevent the power socket 230 from falling off the side without the boss 231.

[0057] like Figure 2 , Figure 4-5 , Figure 8 As shown, in some embodiments of this disclosure, a network port holder 240 (e.g., an RJ45 connector) may also be provided on the circuit board 200. This is a network interface element that is soldered to the circuit board 200 via surface mount solder pads or through-hole solder pads on its bottom. A third through-hole 123 is provided on the back cover 120 corresponding to the position of the network port holder 240 for inserting a network cable connector. The shape of the third through-hole 123 may be similar to but slightly smaller than the outer contour of the network port holder 240; that is, the diameter of the third through-hole 123 is smaller than the maximum outer diameter of the network port holder 240.

[0058] During installation, the back cover 120 is aligned with the panel 110 and closed. Since the diameter of the third through hole 123 is smaller than the outer diameter of the mesh seat 240, the edge of the third through hole 123 on the back cover 120 will naturally and forcibly press against the upper surface of the mesh seat 240, thereby achieving the pressing of the mesh seat 240.

[0059] When the back cover 120 is closed, the edge of the smaller third through-hole 123 acts like a "pressure ring," tightly pressing the network port holder 240 from above. When the network cable is pulled outward by an external force, the pulling force will first attempt to pull the network port holder 240 upward. At this time, this upward force is immediately blocked by the edge of the third through-hole 123 on the back cover 120. The force is successfully transmitted to the back cover 120 and dispersed throughout the entire structure, preventing the pulling force from acting directly on the solder pads of the network port holder 240, thereby greatly reducing the risk of solder pad detachment.

[0060] In some embodiments of this disclosure, an electronic device is also provided, which may include an anti-loosening structure as provided in any of the above embodiments, thereby preventing the pads of the electronic device’s electrical connector 210, power socket 230 or network port socket 240 from falling off due to external force.

[0061] In one example, the electronic device may be a building intercom system (such as an intercom extension) or a smart home device (such as a full-screen or smart screen). It should be noted that, in addition to the above two, the electronic device may also be any other device to which the technical solution of this disclosure can be applied, and there are no special limitations on this.

[0062] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. An anti-loosening structure, characterized in that, include: A housing, the housing including a front panel and a rear cover, the front panel and the rear cover being closed to form a receiving cavity; A circuit board is disposed within the receiving cavity. The circuit board includes at least a first electrical connector and a second electrical connector disposed adjacent to each other. The first electrical connector has a first connecting pin extending outward on a first side, and the second electrical connector has a second connecting pin extending outward on a second side. A reinforcing connection structure is provided between the second side of the first electrical connector and the first side of the second electrical connector, wherein the outward extension directions of the first connecting pin and the second connecting pin are opposite.

2. The structure as described in claim 1, characterized in that, The rear cover has a first through hole for exposing the electrical connector, and a first protrusion extends inward from the edge of the first through hole; when the rear cover is closed on the panel, the first protrusion presses against the first connection pin and the second connection pin.

3. The structure as described in claim 2, characterized in that, The first bump extends from one end of the first electrical connector or the second electrical connector to the other end in an outward direction perpendicular to the first connection pin or the second connection pin.

4. The structure as described in any one of claims 1-3, characterized in that, The reinforced connection structure is a gel material structure filled between the first electrical connector and the second electrical connector, or a gel material structure between the first electrical connector, the second electrical connector and the circuit board.

5. The structure as described in any one of claims 1-3, characterized in that, The reinforcement connection structure is a reinforcement component disposed between the first electrical connector and the second electrical connector, and the reinforcement component is used to connect the first electrical connector and the second electrical connector.

6. The structure as described in claim 1, characterized in that, The circuit board is also provided with a power socket, and the back cover has a second through hole for the power socket to be exposed. At least one side of the power socket is provided with a boss, and the edge of the second through hole extends inward with a second protrusion. The second protrusion can press against the boss when the back cover is closed on the panel.

7. The structure as described in claim 6, characterized in that, The power socket has protrusions on both sides.

8. The structure as described in claim 6, characterized in that, The boss and the power supply base are integrally injection molded.

9. The structure as described in claim 1, characterized in that, The circuit board is also provided with a mesh port holder; the rear cover has a third through hole for the mesh port holder to be exposed; the diameter of the third through hole is smaller than the outer diameter of the mesh port holder, so that it is partially pressed against the upper surface of the mesh port holder.

10. An electronic device, characterized in that, Includes the anti-loosening structure as described in any one of claims 1-9.

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