Quick charger with lock catch anti-loosening function

Abstract

The invention relates to the technical field of charging equipment, and particularly discloses a quick charger with a lock catch anti-loosening function, which comprises an outer shell, a rechargeable battery module arranged in the outer shell, a control circuit board electrically connected with the rechargeable battery module, and a port module electrically connected with the control circuit board, the charging device further comprises a lock catch mechanism, the outer shell is provided with a first insertion hole, a first charging assembly is arranged in the first insertion hole, and the first charging assembly is electrically connected with the rechargeable battery module through the control circuit board. The external plugging head is used for being inserted into the first plugging hole to be electrically matched with the first charging assembly; the lock catch mechanism comprises a first locking piece movably arranged relative to the outer shell, a limiting piece used in cooperation with the external connecting plug is arranged on the external connecting plug, and the first locking piece is matched with the limiting piece to prevent the connecting plug inserted into the first inserting hole from being disengaged. The lock catch mechanism further comprises an unlocking assembly movably arranged on the outer shell, and the unlocking assembly is used for driving the first locking piece to be separated from the limiting piece so that an external connecting plug can be freely plugged and unplugged.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular discloses a quick charger with a locking and anti-dropping function. Background Art

[0002] With the widespread popularity of portable smart devices, users' demand for the safety, convenience and versatility of chargers has increased significantly.

[0003] In existing portable charging devices, common technical solutions have taken into account users' concerns about the stability of the plug connection during the charging process.

[0004] Chinese utility model patent CN211981049U proposes a device for preventing a power bank plug from falling off, comprising a power bank main body, an anti-falling frame fixedly connected to the middle of the top of the power bank main body and at the output interface position, an insertion through hole provided at the top of the anti-falling frame, telescopic holes provided on both sides of the inner wall of the insertion through hole, a spring fixedly connected to the inner wall of the telescopic hole, one end of the spring fixedly connected to a limit plate, one side of the limit plate fixedly connected to a limit block, the other side of the limit plate fixedly connected to a nylon rope, a first movable through hole provided on the inner wall of the telescopic hole, the inner cavity of the first movable through hole movably inserted and connected to the outer wall of the nylon rope, and one end of the nylon rope fixedly connected to a ring.

[0005] When in use, the charging connector is inserted into the output interface through the insertion hole opened along the top of the anti-falling frame. During the insertion, the outer wall of the charging connector squeezes the limit block, the limit block squeezes the limit plate, and the limit plate squeezes the spring, causing the spring to contract, thereby causing the limit block to contract into the telescopic hole. When the charging connector is fully inserted into the output interface, the charging connector no longer squeezes the limit block, so that the limit block pops out from the telescopic hole under the elastic action of the spring, which plays a limiting role on the charging connector, avoids the charging connector from falling off, and improves the charging efficiency of the power bank.

[0006] The device realizes passive limiting after the plug is inserted by setting up an anti-drop frame, a spring limit plate, a nylon rope and a ring to prevent the plug from accidentally falling off during use.

[0007] However, while this solution has certain structural practicality, its locking mechanism relies primarily on external elastic limiters, lacking a reliable mechanical locking device. Unlocking also relies on manual removal, making it impossible to achieve automatic linkage control of the plug-in and unplug-out process. Furthermore, this technical solution does not address modular management of the plug connection circuitry, lacks the ability to fine-tune power on / off, output path, or operating status, and cannot meet the requirements of fast charging current and high power adaptation. Summary of the Invention

[0008] To overcome the technical problems of the prior art, which include a lack of reliable mechanical locking devices for locking structures, reliance on manual unplugging for unlocking, inability to achieve automatic linkage control of the plugging and unplugging process, and a lack of modular management of the charger's operating status, the present invention aims to provide a fast charger with plug-in linkage control, reliable mechanical locking, and the ability to achieve refined management of power on / off, output path, and operating status.

[0009] To achieve the above-mentioned purpose, the present invention provides a fast charger with a locking and anti-loosening function, comprising an outer shell, a rechargeable battery module arranged in the outer shell, a control circuit board electrically connected to the rechargeable battery module, and a port module electrically connected to the control circuit board; it also includes a locking mechanism, the outer shell is provided with a first plug hole, a first charging component is provided in the first plug hole, and the first charging component is electrically coordinated with the rechargeable battery module via the control circuit board; the external plug connector is used to be inserted into the first plug hole and electrically cooperate with the first charging component; the locking mechanism includes a first locking member movably arranged relative to the outer shell, and the external plug connector is provided with a limiting member used in conjunction with the first locking member, the first locking member cooperates with the limiting member to limit the external plug connector inserted into the first plug hole from being disengaged; the locking mechanism also includes an unlocking component movably arranged on the outer shell, and the unlocking component is used to drive the first locking member to disengage from the limiting member so that the external plug connector can be freely plugged in and unplugged.

[0010] Furthermore, the fast charger also includes a sliding assembly, which includes a sliding plate that is reciprocally arranged on the outer shell, and the moving direction of the sliding plate is arranged to intersect with the opening direction of the first plug hole. The sliding plate reciprocates relative to the first plug hole to open or close the first plug hole.

[0011] Furthermore, the invention further comprises a sliding assembly, the sliding assembly comprising a sliding plate movably disposed on the outer shell, the sliding plate having a pulling portion that cooperates with the first locking member, the sliding assembly being used as an unlocking assembly and / or as a protective assembly; When the sliding assembly is used as a protective assembly and an unlocking assembly, the sliding plate moves away from the first plug hole to a first position to expose the first plug hole, an external plug connector is inserted into the first plug hole to be electrically connected to the first charging assembly, the first locking member cooperates with the limiting member to restrict the external plug connector from being separated from the first charging assembly, and the sliding plate moves away from the first plug hole to a second position to enable the pulling portion to link the first locking member away from the limiting member so that the external plug connector can be freely plugged in and out; When the sliding assembly is used as a protective assembly, the sliding plate moves away from the first plug hole to a first position to allow an external plug connector to be inserted into the first plug hole to electrically connect with the first charging assembly, and the sliding plate moves toward the first plug hole to cover the first plug hole. When the sliding assembly is used as an unlocking assembly, the sliding plate moves away from the first plug hole to the second position so that the pulling portion links the first locking member away from the limiting member so that the external plug connector can be freely plugged in and out.

[0012] Further, the sliding assembly also includes an anti-derail assembly, and the anti-derail assembly includes a first chute arranged on an outer shell, an anti-drop-off draw-in groove arranged in the first chute, and an anti-drop-off projection arranged on a slide; when the sliding plate moves to the first position or the second position, the anti-drop-off projection cooperates with the anti-drop-off draw-in groove to limit the movement of the sliding plate.

[0013] Furthermore, an elastic protective sheet is provided on the side of the sliding plate facing the first plug hole. When the sliding plate moves to a position covering the first plug hole, the elastic protective sheet fits tightly against the surface of the outer shell to form a sealing barrier, preventing external debris from entering and causing unnecessary damage to the first charging component.

[0014] Furthermore, the first locking member is a first plate rotatably arranged on the outer shell, a first latching protrusion arranged on the first plate, and a first elastic member arranged between the first plate and the outer shell; the limiting member is a first latching groove arranged on the external plug connector, and the first elastic member drives the first plate under the action of elastic force, so that the first latching protrusion extends into the first latching groove to prevent the external plug connector from being disengaged from the first charging component.

[0015] Furthermore, a pressing portion is provided at one end of the first plate away from the first latching protrusion, and a first avoidance groove for providing a rotation space for the pressing portion is provided on the outer shell, and the pressing portion is the unlocking component.

[0016] Furthermore, the first locking member comprises two second plates rotatably mounted on the outer shell, a second latching protrusion mounted on the second plates, and a second elastic member for cooperating with the second plates; the second latching protrusion of the second plates is configured to block and interfere with a stopper of an external plug connector, and the external plug connector is located between the two second plates; One end of the second elastic member is located between the second latching protrusion and the rotation axis of the first second plate body, the other end of the second elastic member is located on the first end of the second second plate body, the rotation axis of the second second plate body is located between the first end and the second end of the second second plate body, the second latching protrusion of the second second plate body is set at the second end of the second second plate body, and the unlocking component is used to cooperate with the second second plate body.

[0017] Furthermore, the first locking member is a linkage frame movably arranged on the outer shell, a linkage plate rotatably arranged on the outer shell, and two third plates rotatably arranged on both sides of the plug-in frame; the two ends of the linkage frame are respectively provided with a first hook and a second hook, the first hook is linked to cooperate with a third plate via the linkage plate, and the second hook is used to link and cooperate with the unlocking component, the linkage frame has a through hole for an external plug connector to pass through, and the external plug connector is located between the two third plates, and the third plate is provided with a third latching protrusion, which is used to stop and interfere with the limit member.

[0018] Furthermore, the port module includes a first charging component located in the plug-in frame, the external plug connector is used to be inserted into the plug-in frame and electrically connected to the first charging component, and the first charging component is electrically connected to the external plug connector for external power input to the rechargeable battery module; the port module also includes a second charging component and a third charging component electrically connected to the rechargeable battery module via a control circuit board; the second charging component and the third charging component are used to cooperate with an external smart terminal to exchange power.

[0019] Furthermore, the rechargeable battery module includes multiple battery cells, which are connected in series or in parallel. The fast charger also includes a battery management module arranged on the control circuit board and electrically connected to the battery cells. The battery management module is used to monitor the power requirements of the external smart terminal when the smart terminal is connected to the port module, and control the battery cells to output electrical energy to the smart terminal independently or in combination.

[0020] Furthermore, the control circuit board is provided with a fast charging module and a temperature control and speed regulation module. The fast charging module has a voltage detection unit and a temperature detection unit for monitoring the voltage and temperature values ​​of the battery cell unit. The fast charging module also includes a charging control chip. The charging control chip is used to adjust the charging power and charging path of the first charging component, the second charging component, and the third charging component according to the voltage and temperature values. The temperature control and speed regulation module is used to electrically cooperate with the temperature detection unit to send a warning signal to the battery management module when the operating temperature of the battery cell unit exceeds a preset threshold. The battery management module is used to regulate the first charging component, the second charging component and the third charging component to enter a reduced speed charging mode according to the warning signal.

[0021] Furthermore, the fast charger also includes a bidirectional power management module electrically connected to the control circuit board, and the bidirectional power management module includes a charging path control module and a discharging path control module. When the charger is used as a charger, the bidirectional power management circuit is used to charge the rechargeable battery module with input energy and simultaneously supply power to external electrical devices. When the charger is used as a power bank, the bidirectional power management module is used to charge the rechargeable battery module with input energy and supply power to external electrical devices when the port module is connected to the external electrical device.

[0022] Further, Beneficial effects of the present invention: (1) The fast charger provided by the present invention is locked by an embedded locking mechanism together with a first locking member having an elastic structure and a limit member on an external plug connector. It has the characteristics of stable structure, anti-loosening and anti-dropping, and convenient use, which can significantly improve the reliability and safety during use.

[0023] (2) The sliding cover protection component can not only improve the structural protection capability, but also be linked to the unlocking component to achieve automatic control of the plugging and unplugging process, with a high degree of integration and easier user operation.

[0024] (3) Through the dynamic scheduling mechanism of battery cells, it can intelligently adapt to the energy requirements of different power terminals such as mobile phones, tablets, and notebooks, extend battery life and reduce energy consumption; the temperature control module works together with the battery cell monitoring system to ensure temperature safety during high-power fast charging and prevent battery cells from overheating and aging.

[0025] (4) The dual power supply mode expands the product's applicable scenarios, making it flexible for use in a variety of complex power supply environments. The overall solution structure and control logic are organically integrated, with good prospects for promotion and application and significant technological advancement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the quick charger of the present invention when it is plugged into an external plug connector; Figure 2 This is a schematic diagram of the position structure of some port modules, charging modules and indicator light modules of the fast charger of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the fast charger with the second shell removed according to the first embodiment of the present invention; Figure 4 This is a schematic structural diagram of the first embodiment of the present invention when the first locking member is removed; Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A; Figure 6Schematic diagram of the bottom structure of the sliding plate according to the first embodiment of the present invention; Figure 7 Schematic diagram of the top structure of the sliding plate according to the first embodiment of the present invention; Figure 8 is a cross-sectional view of embodiment 1 of the present invention; Figure 9 for Figure 8 Schematic diagram of the enlarged structure of part B; Figure 10 This is a schematic diagram of the position structure of the locking mechanism of the second embodiment of the present invention; Figure 11 This is a schematic diagram of the position structure of the third card board in the second embodiment of the present invention; Figure 12 This is a schematic diagram of the position structure of the locking mechanism of the third embodiment of the present invention; Figure 13 This is a schematic structural diagram of embodiment 3 of the present invention when the first locking member is removed; Figure 14 Schematic diagram of the structure of the sliding plate of embodiment 3 of the present invention; Figure 15 This is a schematic structural diagram of a two-core female plug of an external plug connector of the present invention; Figure 16 This is a schematic structural diagram of a first charging assembly according to a first embodiment of the present invention; Figure 17 Schematic diagram of the internal structure of the first shell of the present invention.

[0027] Reference numerals include: 1. Outer shell; 100. First shell; 101. Second slot; 102. First slide; 103. Anti-drop slot; 104. Third clamp; 105. Fourth shaft; 106. Sealing strip; 107. Wire slot; 108. Anti-collision rib; 109. Avoidance cavity; 200. Second shell; 300. Third shell; 2. Plug frame; 20. First avoidance hole; 3. External plug connector; 31. Two-core female plug; 310. Pinch groove; 3 11. First card slot; 312. First inclined portion; 32. Two-pin male plug; 4. Locking mechanism; 6. Sliding assembly; 7. Battery management module; 8. Fast charging module; 9. Temperature control and speed regulation module; 11. First plug-in port; 12. Rechargeable battery module; 121. Battery cell unit; 122. Shock-absorbing gasket; 13. Control circuit board; 131. Indicator module; 132. Switch module; 14. Port module; 141. First charging assembly; 14 10. First connecting plate; 1411. Second clamping plate; 142. Second charging assembly; 143. Third charging assembly; 15. First avoidance groove; 50. First rotating shaft; 51. First plate; 510. First rib; 511. First clamping protrusion; 5110. Second inclined portion; 512. First elastic member; 513. Pressing portion; 52. Second plate; 520. Second rotating shaft; 521. Second clamping protrusion; 522. Second elastic member; 523. Abutment Touch plate; 53, linkage frame; 531, first hook; 532, second hook; 533, linkage plate; 5330, fifth rotating shaft; 534, third plate body; 5340, third rotating shaft; 5341, bending portion; 535, third latching protrusion; 61, sliding plate; 610, first protrusion; 611, anti-slip protrusion; 612, first rib; 613, second rib; 614, third rib; 615, first pulling block; 616, first pulling plate. DETAILED DESCRIPTION

[0028] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0029] See also Figures 1 to 17As shown, a fast charger with a locking and anti-loosening function of the present invention includes an outer shell 1, a rechargeable battery module 12 disposed in the outer shell 1, a control circuit board 13 electrically connected to the rechargeable battery module 12, and a port module 14 electrically connected to the control circuit board 13; the characteristic is that it also includes a locking mechanism 4, the outer shell 1 is provided with a first plug hole 11, the first plug hole 11 is provided with a first charging component 141, the first charging component 141 is electrically coupled with the rechargeable battery module 12 via the control circuit board 13; an external plug connector 3 is used to be inserted into the first plug hole 11 and electrically coupled with the first charging component 141; the locking mechanism 4 includes a first locking member movably disposed relative to the outer shell 1, and the external plug connector 3 is provided with a limit member used to cooperate with the first locking member, the first locking member and the limit member cooperating to prevent the external plug connector 3 inserted into the first plug hole 11 from being disengaged; the locking mechanism 4 also includes an unlocking component movably disposed on the outer shell 1, the unlocking component is used to drive the first locking member to disengage the limit member so that the external plug connector 3 can be freely inserted and removed.

[0030] Example 1: Specifically, please combine Figures 1 to 9 As shown, in this embodiment, the outer shell 1 is a roughly hollow rectangular parallelepiped structure. The outer shell 1 is composed of a first shell 100, a second shell 200, and a third shell 300 that are detachable through a snap-fit ​​structure and a bolt structure. The first shell 100 and the second shell 200 are correspondingly spliced ​​to form the main body of the outer shell 1. The third shell 300 is snapped onto one side of the main body of the outer shell 1 for cooperating with the installation of the second charging component 142, the third charging component 143, the switch module 132, and the indicator light module 131. The external plug connector 3 is a two-core female to male adapter plug, one end of which is a two-core female plug 31 and the other end is a two-pin male plug 32. The first charging component 141 is a two-core male plug. Two arc-shaped pinching grooves 310 are symmetrically arranged on the two-core female plug 31. When in use, the arc-shaped pinching grooves 310 can be used by hand to achieve convenient plugging and unplugging.

[0031] Specifically, please combine Figure 2 As shown, the indicator light module 131 has four integrated power display and charging display indicators. The four indicators are integrated into the third housing 300, and the switch module 132 is located on one side of the indicator lights. The second charging component 142 and the third charging component 143 are located on the end of the third housing 300 away from the switch module 132.

[0032] The limiting member is a first card slot 311 symmetrically arranged on both sides of the two-core female plug 31, and a first inclined portion 312 is provided on the first card slot 311, that is, the cross-section of the first card slot 311 is trapezoidal; the first locking member is rotatably arranged on the outer shell 1 through the first rotating shaft 50, and is located on one side of the plug-in frame 2; the plug-in frame 2 is a U-shaped frame protruding from the inner wall of the outer shell 1, and the plug-in frame 2 and the outer shell 1 are integrally injection-molded, and the first locking protrusion 511 is a raised strip structure protruding from the end face of the first plate body 51, and the free end of the first locking protrusion 511 has a second inclined portion 5110, that is, the shape of the first locking protrusion 511 is adapted to the shape of the first card slot 311.

[0033] During use, the two-core female plug 31 can be directly pinched by the pinching groove 310 to insert it into the plug-in frame 2 through the first plug-in hole 11 to electrically connect it to the first charging component 141 (two-core male plug). During this process, the two-core female plug 31 contacts the second inclined portion 5110 of the first latching protrusion 511, causing the first latching protrusion 511 to rotate around the first rotation axis 50 and move away from the plug-in frame 2 to make way. The two-core female plug 31 continues to be inserted and moved. When the first latching protrusion 511 moves to the first latching groove 311, it is reset by the elastic force of the first elastic member 512 (the first elastic member 512 is a V-shaped spring arranged around the first rotation axis 50, with one end fixed on the first plate body 51 and the other end abutting the bottom wall of the first avoidance groove 15), that is, it enters the first latching groove 311 to achieve locking.

[0034] Specifically, the plug frame 2 is provided with a first relief hole 20 for use with the first latching protrusion 511. During use, the first latching protrusion 511 passes through the first relief hole 20 and locks with the first latching groove 311. Furthermore, the external plug connector 3 (two-core female plug 31) has a rounded corner (omitted from the figure) at its end. During use, this rounded corner guides it into the first plug hole 11 and, when in use, it contacts the second inclined portion 5110 of the first latching protrusion 511, causing it to rotate about the first rotation axis 50.

[0035] The first latch 511 and the trapezoidal groove-bevel design of the limiter can automatically give way during the insertion process and self-lock at the end. Cooperating with the V-shaped spring reset, automatic linkage control of the plugging and unplugging process is achieved, overcoming the defects of the traditional solution that relies on manual extraction and has no mechanical retention capability.

[0036] Then insert the two-core male plug at the other end of the external plug connector 3 into the corresponding position of the external socket, and the charger can now draw power from the external power supply.

[0037] To unlock, pressure is applied to the pressing portion 513, causing the first plate 51 to rotate about the first rotation axis 50. During this process, the first latching protrusion 511 moves away from the plug frame 2 and disengages from the first latching slot 311. In this embodiment, the pressing portion 513 is provided with two first anti-slip ribs 510, which increase friction when pressed, allowing quick unlocking of the external plug connector 3 even with wet hands.

[0038] The second charging assembly 142 comprises two USB ports electrically connected to the control circuit board 13. These USB ports are configured with both input and output functions. When the charger is drawing power from an external power source, a USB-C power cable can be plugged into one end of the USB port and connected to the corresponding port on a laptop computer for charging.

[0039] The third charging component 143 comprises two Type-C interfaces, which are also configured with input and output functions. When the charger's rechargeable battery module 12 has power, it can be used to charge external smart terminals. In actual use, the Type-C interfaces can also be used to power the charger's rechargeable battery module 12.

[0040] Please combine Figure 16 and Figure 5 As shown, the first charging assembly 141 (a two-core male plug) is snap-fitted to the first housing 100 via a first connecting plate 1410 and removably connected to the first housing 100 via bolts. The end of the two-core male plug, remote from the plug-in frame 2, is electrically connected to the control circuit board 13 via a wire. Preferably, the first housing 100 is provided with a second slot 101 on one side of the plug-in frame 2, and the first connecting plate 1410 is provided with a second clip 1411 that mates with the second slot 101. In actual use, the first connecting plate 1410 is first snap-fitted with the second slot 101 and the second clip 1411, and then removably connected to the outer housing 1 via bolts.

[0041] Specifically, a first sliding groove 102 is formed on the first shell 100, the sliding plate 61 is slidably arranged in the first sliding groove 102, the side wall of the first sliding groove 102 is provided with an anti-slip groove 103, four first protrusions 610 that slide and cooperate with the first sliding groove 102 are provided on both sides of the sliding plate 61, and the first protrusions 610 are provided with anti-slip protrusions 611 that cooperate with the anti-slip groove 103. The four first protrusions 610 are distributed in pairs on both sides of the length direction of the sliding plate 61, and there are eight anti-slip grooves 103, of which four anti-slip grooves 103 are distributed in groups of two on both sides of the first plug-in hole 11.

[0042] When the sliding plate 61 is not in use, it covers the first plug-in hole 11, and the four anti-dropout protrusions 611 are in the four anti-dropout slots 103 at the first plug-in hole 11 to prevent it from being detached from the first plug-in hole 11 by external force when not in use; when the sliding plate 61 moves forward (away from the first plug-in hole 11), its four anti-dropout protrusions 611 move into the other four anti-dropout slots 103 to limit the position. At this time, the first plug-in hole 11 is opened, and the two-core female plug 31 of the external plug connector 3 can be easily inserted.

[0043] The sliding plate 61 achieves two-way limiting and sliding stability through the combined structure of the first sliding groove 102 + the first protrusion 610 + the anti-slip protrusion 611 + the anti-slip slot 103, avoiding slipping due to external force, while enhancing the sliding feel and precision control, and having good protection and guiding functions.

[0044] Specifically, the sliding plate 61 is provided with first ribs 612 on both sides, and second ribs 613 on the first ribs 612. When the sliding plate 61 is slid, the second ribs 613 directly contact the bottom wall of the first chute 102, increasing friction and preventing the sliding plate 61 from loosening. Furthermore, the first ribs 612 serve to guide the movement of the sliding plate 61, ensuring smoother and more reliable sliding. Furthermore, the upper end of the sliding plate 61 is provided with third ribs 614, extending in a direction that intersects (in this embodiment, is perpendicular to) the direction of movement of the sliding plate 61. During use, the third ribs 614 increase friction between the sliding plate 61 and the finger, allowing the sliding plate 61 to slide more quickly.

[0045] The multiple second ribs 613, third ribs 614 and first ribs 612 provided on the sliding plate 61 improve the operational friction and structural rigidity, making the sliding smoother and less prone to jamming, and solving the problems of poor feel and unstable use of the sliding cover in the existing structure.

[0046] The locking mechanism 4 of the present invention adopts the form of "U-shaped plug-in frame 2 + snap limit + sliding cover protection", which makes the insertion process of the external plug connector 3 have guidance and limiting properties, improves the stability of plug-in and convenience of operation, and solves the problems of easy loosening and loose connection of the plug in the prior art.

[0047] Specifically, the rechargeable battery module 12 includes five battery cells 121, which are electrically connected to a battery management module 7 (hereinafter referred to as the BMS) via a control circuit board 13. To achieve intelligent scheduling of output power, the BMS 7 integrates a battery group scheduling control circuit that dynamically determines the power required by the current external load and, accordingly, determines the number and connection method of the battery cells 121 required to participate in the output.

[0048] Specifically, in this embodiment, a shock-absorbing gasket 122 is placed between the rechargeable battery module 12 and the inner wall of the outer shell 1 to prevent accidental damage to the battery cells 121 when the charger is struck or dropped. A flexible sealing strip 106 is provided around the first shell 100, and a corresponding annular groove is provided around the second shell 200 to accommodate the sealing strip 106. During installation, the interference fit between the sealing strip 106 and the annular groove ensures waterproofing of the two. Sealing and waterproof structures are also provided between the third shell 300 and the first shell 100, and between the third shell 300 and the second shell 200, further enhancing the charger's waterproof performance.

[0049] In actual use, the battery cell unit 121 can be set to four 18650 lithium-ion battery cells, each of which is connected to the main power supply bus through a separate MOS switch control circuit, and the MOS on and off is controlled by the battery cell grouping control circuit. The battery cell scheduling module can receive an input power judgment signal from the load detection circuit. For example, it can judge the maximum power requirement of the currently connected device through the PD identification protocol. When the power demand is lower than 10W, only one battery cell unit 121 is turned on to participate in the power supply; when the demand is 25W, two battery cell units 121 are turned on in parallel to supply power; when the load power is greater than 40W, the four battery cell units 121 are started for combined output, thereby increasing the total output voltage. This embodiment supports up to 65W fast charging.

[0050] This solution optimizes output energy efficiency, extends battery life, and reduces the risk of unnecessary overcharging and over-discharging of batteries by dynamically controlling the participating battery cells 121. It is particularly suitable for power supply scenarios for smart terminals under mixed high and low power loads, and avoids the power waste problem of "outputting the entire set of batteries at once" in traditional power banks.

[0051] Specifically, the control circuit board 13 is further provided with a fast charging module 8 and a temperature control and speed regulation module 9 for collaboratively controlling different charging paths and power regulation. In this embodiment, the fast charging module 8 is an integrated multi-protocol fast charging chip that supports PD and QC protocols, such as the Yingjixin IP2726, which is connected to the power supply via I 2 The C or GPIO interface receives the voltage and temperature data of each battery cell from the BMS, calculates the remaining capacity of the current battery cell unit 121 and the optimal charging power, and then dynamically allocates the output path and power according to the port type (USB, Type-C) to which the load is connected.

[0052] For example, when the total voltage of the battery cells 121 is between 3.6 and 3.8V and there's no risk of overheating, 65W fast charging mode can be enabled. If the temperature of any of the battery cells 121 exceeds a preset threshold (e.g., 60°C), the temperature control and speed regulation module 9 issues a warning signal, causing the BMS to immediately reduce the output power to 45W and, if necessary, automatically disconnect specific battery cell circuits to prevent further overheating. Furthermore, the temperature control and speed regulation module 9 is located in the center of the battery pack and uses an NTC thermistor for real-time monitoring.

[0053] The implementation of this technical solution can achieve fine adjustment and protection control of the charging status of each charging component, taking into account both high efficiency and safety, improving thermal stability during fast charging, avoiding thermal damage and aging caused by simultaneous high-power charging of multiple cells, and effectively improving product reliability and service life.

[0054] Specifically, the fast charger of the present invention is equipped with a bidirectional power management module, which realizes automatic switching control between the two working modes of charger and power bank.

[0055] In this embodiment, the bidirectional power management module includes a main control chip, a power switching MOSFET, a charge-discharge path detection circuit, and a power isolation module. When an external AC power source is connected to the first charging assembly 141 and rectified, it outputs a stable voltage to the control circuit board 13. The main control chip detects that the input voltage is higher than the battery cell voltage and activates the charging path control module, sending power to the BMS and charging the battery cells. Simultaneously, the control logic activates the discharge path of the output port (such as a USB or Type-C port), achieving simultaneous charging and discharging.

[0056] When there is no external power supply, the system automatically switches to discharge mode, and the battery cell output powers external devices. The circuit structure is equipped with a current backflow protection circuit composed of a Schottky diode and a low-resistance power MOS tube to prevent energy backflow. In addition, during use, the main control chip can determine whether to maintain the charging state or cut off the power output according to the different port access status (for example, through USB-C, CC pin detection), ensuring that the system working mode is dynamically matched with the load status. This technical solution takes into account both power supply flexibility and energy closed-loop efficiency. It not only meets the diverse needs of modern users in different power supply scenarios (wall plug direct charging, mobile charging), but also ensures the automation of power scheduling and intelligent overcurrent protection during use, thereby improving the overall system intelligence level and user experience.

[0057] This solution demonstrates significant structural innovation and functional advantages in key technical areas such as cell scheduling, power control, thermal management, and bidirectional power supply, effectively compensating for the problems of low energy efficiency, slow response, and incomplete thermal management in traditional chargers or power banks.

[0058] Example 2: See also Figure 10 and Figure 11 As shown, in this embodiment, the overall structure of the fast charger is similar to that of the first embodiment, including an outer shell 1, a rechargeable battery module 12 arranged in the outer shell 1, a control circuit board 13 electrically connected to the rechargeable battery module 12, a port module 14 connected to the control circuit board 13, and an external plug connector 3 connected to the first charging component 141; the difference is that: the locking mechanism 4 in this embodiment adopts a double-plate linkage structure, and the sliding component 6 is used as an unlocking component to achieve the replacement of the structural unlocking function and the simplification of the sliding operation.

[0059] Specifically, the outer shell 1 is still a hollow rectangular parallelepiped structure composed of a first shell 100, a second shell 200, and a third shell 300 that can be detachably assembled. The first charging assembly 141 housed within the port module 14 is a two-core male plug. The plug frame 2 is a U-shaped structure, with a protrusion protruding from one side of the inner wall of the outer shell 1 to guide the external plug connector 3 for insertion. The external plug connector 3 is a two-core female-to-male adapter structure. However, the two-core female plug 31 is symmetrically provided with two first latching grooves 311 on either side. The cross-section of the first latching grooves 311 is also trapezoidal, and upon insertion, the second latching protrusion 521 of the locking mechanism 4 is engaged to achieve mechanical locking.

[0060] Specifically, in this embodiment, the first locking member includes two second plates 52 symmetrically arranged on both sides of the plug-in frame 2. The two second plates 52 are rotatably installed in the outer shell 1 through their respective second rotating shafts 520. Second locking protrusions 521 are respectively provided on the two second plates 52, which are used to pass through the first avoidance hole 20 on the plug-in frame 2 and engage with the first locking groove 311 on the external plug connector 3 to achieve locking.

[0061] A second elastic member 522 is provided between the two second plates 52. It is a shape memory spring structure, roughly in a Z-shaped structure. One end of the second elastic member 522 is located between the latching protrusion of the first (upper position in the figure) second plate 52 and the rotating shaft and close to the second rotating shaft 520, and the other end is in contact with the second (lower position in the figure) second plate 52 away from its latching protrusion end. The middle part of the second elastic member 522 is limited to the inner wall of the first shell 100 by two third clamping plates 104, so that the second elastic member 522 can move synchronously along the moving direction of the sliding plate 61, but cannot move in the moving direction perpendicular to the sliding plate 61.

[0062] When plugged in and used, the two-core female plug 31 is inserted into the plug-in frame 2 through the first plug-in hole 11, and a chamfered structure is provided on both sides thereof to facilitate the contact with the second inclined portion 5110 of the two second latching protrusions 521, so that the second plate body 52 can move toward each other with the help of the second elastic member 522, thereby completing the clamping fit between the two first latching grooves 311 and the two second latching protrusions 521.

[0063] Specifically, the sliding assembly 6 in this embodiment does not perform a protective function; it merely serves as an unlocking mechanism and participates in the structural linkage. The sliding plate 61 slides within the first slot 102 of the first housing 100, with its sliding direction perpendicular to the opening of the plug-in frame 2. A trapezoidal first pull block 615 (the pull portion) is provided at one end of the sliding plate 61 to engage with the contact plate 523 on the second plate 52.

[0064] The abutment plate 523 is an obliquely arranged, long strip. When unlocking, as the sliding plate 61 slides away from the plug-in frame 2, the first pulling block 615 contacts the abutment plate 523 and pushes it to deflect in the rotation direction of the second plate 52, thereby driving the entire second plate 52 to rotate about the second rotation axis 520. During this process, the second latching protrusion 521 moves about the rotation axis and disengages from the first latching slot 311. The second elastic member 522 then drives the other second plate 52 to rotate about the second rotation axis 520, disengaging the other second latching protrusion 521 from the first latching slot 311, thereby unlocking the external plug connector 3.

[0065] Preferably, the outer shell 1 is provided with a stopping structure (not shown in the figure) near the first sliding groove 102, which is used to prevent the sliding plate 61 from sliding excessively when unlocked, and to prevent the second plate 52 from breaking due to excessive external force.

[0066] Because the sliding plate 61 in this structure lacks the anti-slip protrusion 611 and the first sliding groove 102 lacks the anti-slip slot 103, the sliding cover does not cover the plug interface and is limited to the structural unlocking function. This sliding unlocking method replaces the structure in Example 1 where unlocking is achieved by pressing the lock plate with a finger. Compared to the clamping structure of the single first latching protrusion 511 and the first latching slot 311 in Example 1, the dual latching protrusions and dual latching slots in this embodiment further reduce the risk of the two-core female plug 31 of the external plug connector 3 being disengaged. In addition, because the unlocking is performed by sliding rather than pressing, the first avoidance groove 15 does not need to be provided in the outer shell 1 during manufacturing, saving manufacturing costs and reducing the risk of foreign matter entering the outer shell 1.

[0067] Because the sliding assembly 6 serves solely as an unlocking mechanism, the overall structure omits components such as the anti-dropout slot 103, anti-dropout protrusion 611, second rib 613, and first rib 612, which are used to limit the slide cover. This results in a simpler structure than the first embodiment, with fewer components and a more refined assembly process. However, this structure lacks the shielding function of the slide cover and cannot provide dust protection for the plug interface when not in use, making it slightly inferior to the first embodiment. However, for applications requiring a simple structure, frequent plugging and unplugging, and low protection requirements, this embodiment can significantly improve the user's plugging and unplugging experience.

[0068] Specifically, a wire groove 107 is additionally provided on the inner wall of the first shell 100 in this embodiment, and the tail ends of the two pins of the two-core male plug of the first charging component 141 are electrically connected to the control circuit board 13 through a wire. The wire is fixed and limited by the wire groove 107, further optimizing the circuit layout and reducing the risks of short circuit and leakage.

[0069] Compared with the existing technology, this embodiment adopts a new mechanism of double-sided rotating plate + sliding component linkage unlocking, which realizes high-strength mechanical locking of the plug when it is inserted, and can be quickly unlocked without contact through the sliding component. It overcomes the technical defects of traditional anti-slip structures that rely on elastic compression or rope pulling, such as poor locking reliability, inconvenient unlocking, and poor operating feel. It has the advantages of sensitive structural response, strong operability, and low component wear. At the same time, it provides greater space and variability for the integration of charger structure and module combination, and has good promotion and application value.

[0070] The rest of this embodiment is the same as that of the first embodiment. The features not explained in this embodiment are all based on the explanations of the first embodiment and will not be described in detail here.

[0071] Example 3: Specifically, please combine Figures 12 to 14 As shown, in this embodiment, the first locking member is composed of a linkage frame 53, a linkage plate 533, and two third plates 534. The linkage frame 53 is a hollowed-out structure located at the front end of the plug frame 2 and connected to the first plug hole 11, so that it does not structurally hinder the insertion of a plug. A first hook 531 and a second hook 532 are respectively provided at each end of the linkage frame 53. The first hook 531 is transmission-connected to one of the third plates 534 via the linkage plate 533. Specifically, the first hook 531 is located above one end of the linkage plate 533, and the other end of the linkage plate 533 is located below the third plate 534. The second hook 532 is driven by the sliding assembly 6 to unlock the linkage.

[0072] The third plate 534 is symmetrically positioned on either side of the plug-in frame 2 and rotatably mounted within the first housing 100 via a central third pivot 5340. One end of the third plate 534 is provided with a wavy bend 5341, the free end of which is movably connected to the fourth pivot 105 protruding from the inner wall of the first housing 100. The bend 5341 is designed as a flexible, deformable structure to accommodate the slight deflection required for engagement and release of the latching protrusion. A third latching protrusion 535 is located at the front end of the third plate 534 and extends into the plug-in frame 2 through the first relief hole 20. It is designed to engage with the first latching slot 311 of the two-core female plug 31, locking the plug.

[0073] Specifically, the linkage plate 533 is a flat plate structure, which can be rotatably set in the first shell 100 through the fifth rotating shaft 5330. One end of it has a U-shaped structure, forming a U-shaped avoidance portion, which accommodates the third locking protrusion 535 and forms an avoidance space during the prying process to pry the third plate body 534.

[0074] When the external plug connector 3 is inserted, it is roughly the same as in Example 2, except that after the third latching protrusion 535 is pushed open, the third plate 534 applies a pre-tightening force to the two-core female plug 31 by means of the elastic force of its own bent portion 5341, thereby making the first latching groove 311 and the third latching protrusion 535 tightly fit.

[0075] In this embodiment, a first pulling plate 616 is provided on the sliding plate 61 to serve as a pulling member. During unlocking, the sliding plate 61, utilizing the first pulling plate 616 and the second hook 532, pulls the linkage frame 53. The end of the linkage frame 53 proximal to the second hook 532 abuts against a third plate 534, causing it to rotate about a third rotation axis 5340, further disengaging the third latching protrusion 535 from the first latching slot 311. Simultaneously, the second hook 532 of the linkage frame 53 pulls the linkage plate 533 to rotate. The end of the linkage plate 533 distal to the first hook 531 exerts a deflecting force on the third plate 534, driving the third latching protrusion 535 away from the plug retainer, thereby unlocking the plug. The second hook 532 cooperates with the first pulling plate 616 on the sliding assembly 6. As the sliding cover moves along the first sliding slot 102, the pulling plate pulls the second hook 532, thereby driving the entire linkage frame 53 to move, triggering the linkage plate 533 and the third plate 534 to form a linked unlocking action.

[0076] The sliding assembly 6 utilizes a sliding plate 61 similar to that of the first embodiment, but differs in that, to mitigate structural friction and counteract elastic forces generated by the linked motion, this embodiment incorporates anti-slip protrusions 611 directly on the first rib 612 of the sliding plate 61. Furthermore, multiple (eight in this embodiment) third ribs 614 are provided at the upper end of the sliding plate 61 (the end that contacts the finger) to enhance control friction. The multiple third ribs 614 are spaced apart to improve finger sliding control precision, enabling stable control of the slider even with wet hands or wearing gloves. The second rib 613 is omitted from the first rib 612 to reduce friction and facilitate smooth movement of the sliding plate 61.

[0077] During use, when the sliding plate 61 is in the closed state, it covers the first plug hole 11 and plays a dust-proof protection role; when the user needs to insert an external plug connector 3, the sliding plate 61 slides away from the first plug hole 11 to expose the first plug hole 11, and the two-core female plug 31 is inserted and automatically embedded in the first slot 311 by the third locking protrusion 535 to form a lock.

[0078] After charging is completed, the user continues to push the sliding plate 61 to the end position. At this time, the first pulling plate 616 on the sliding plate 61 forms a linkage with the second hook 532, driving the linkage frame 53 to move so that the third plate body 534 that is in conflict with it is linked to the third latching protrusion 535 thereon to disengage from the corresponding first latching slot 311; at the same time, the first hook 531 of the linkage frame 53 pulls the linkage plate 533, the linkage plate 533 rotates and pries the third plate body 534 that is in conflict with it, and finally the third plate body 534 is linked to the third latching protrusion 535 thereon to disengage from the corresponding first latching slot 311, thereby unlocking the two-core female plug 31. The user can directly pull out the two-core female plug 31 to complete the power-off operation.

[0079] The main advantages of this embodiment over Examples 1 and 2 lie in its stronger structural linkage and higher functional integration. The sliding assembly 6 not only serves as a protective component but also acts as a driving mechanism for the unlocking mechanism. The user can complete the entire insertion and removal process with a single sliding operation, eliminating the need for additional unlocking actions such as pressing or triggering, significantly improving efficiency.

[0080] Furthermore, the rational design of the structural conduction between the linkage frame 53 and the linkage plate 533 allows for sufficient mechanical release displacement while maintaining a small sliding stroke, thereby controlling the structural volume. Compared to existing anti-slip structures that use rope tension or unidirectional spring compression, this embodiment provides bidirectional mechanical rigidity, greater structural strength, longer service life, and a more user-friendly operating experience, demonstrating outstanding practicality and technological innovation.

[0081] Specifically, see Figure 17 As shown, in this embodiment, a plurality of anti-collision ribs 108 are provided on the inner circumference of the first shell 100. The plurality of anti-collision ribs 108 are used to separate the rechargeable battery module 12 and the control circuit board 13 in the outer shell 1 from direct contact with the inner wall of the outer shell 1. If the outer shell 1 is hit by an external force or falls, these flexible anti-collision ribs 108 can prevent further damage to the rechargeable battery module 12 and the control circuit board 13. A hollow cavity 109 is provided between the plug-in frame 2 and the inner wall of the first shell 100. The hollow cavity 109 is also provided with a plurality of anti-collision ribs 108. When the plug-in frame 2 of the outer shell 1 is hit by an external force, the hollow cavity 109 and the internal anti-collision ribs 108 can prevent the plug-in frame 2 from deforming.

[0082] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A fast charger with a locking anti-loosening function, comprising an outer shell (1), a rechargeable battery module (12) disposed within the outer shell (1), a control circuit board (13) electrically connected to the rechargeable battery module (12), and a port module (14) electrically connected to the control circuit board (13); characterized in that: The invention also includes a locking mechanism (4), wherein the outer shell (1) is provided with a first plug hole (11), a first charging component (141) is provided in the first plug hole (11), and the first charging component (141) is electrically matched with the rechargeable battery module (12) via the control circuit board (13); the external plug connector (3) is used to be inserted into the first plug hole (11) and electrically matched with the first charging component (141); the locking mechanism (4) includes a first locking member movably arranged relative to the outer shell (1), a limiting member used in conjunction with the first locking member is provided on the external plug connector (3), and the first locking member cooperates with the limiting member to limit the external plug connector (3) inserted into the first plug hole (11) from being disengaged; the locking mechanism (4) also includes an unlocking component movably arranged on the outer shell (1), and the unlocking component is used to drive the first locking member to disengage from the limiting member so that the external plug connector (3) can be freely plugged in and out.

2. The fast charger with a lock and anti-loosening function according to claim 1, characterized in that: It also includes a sliding assembly (6), the sliding assembly (6) including a sliding plate (61) movably arranged on the outer shell, and the sliding assembly is used as an unlocking assembly and / or as a protective assembly; When the sliding assembly (6) is used as a protective assembly and an unlocking assembly, the sliding plate (61) has a pulling portion that cooperates with the first locking member, the sliding plate (61) moves in a direction away from the first plug hole (11) to a first position so that the first plug hole (11) is exposed, the external plug connector (3) is inserted into the first plug hole (11) and electrically connected to the first charging assembly (141), the first locking member cooperates with the limiting member to limit the external plug connector from being separated from the first charging assembly (141), and the sliding plate (61) moves in a direction away from the first plug hole (11) to a second position so that the pulling portion cooperates with the first locking member to move away from the limiting member so that the external plug connector (3) can be freely plugged in and out; When the sliding assembly (6) is used as a protective assembly, the sliding plate (61) is not provided with a pulling portion that cooperates with the first locking member, the sliding plate (61) moves in a direction away from the first plug hole (11) to a first position to allow an external plug connector (3) to be inserted into the first plug hole (11) and electrically connected to the first charging assembly (141), and the sliding plate (61) moves in a direction close to the first plug hole (11) so that the first plug hole (11) is covered; When the sliding assembly (6) is used as an unlocking assembly, the sliding plate (61) has a pulling portion that cooperates with the first locking member, and the sliding plate (61) moves in a direction away from the first plug hole (11) to a second position so that the pulling portion is linked to the first locking member away from the limiting member, allowing the external plug connector (3) to be freely plugged in and out.

3. The fast charger with a locking function according to claim 1, characterized in that: The first locking member comprises a first plate (51) rotatably arranged on the outer shell (1), a first latching protrusion (511) arranged on the first plate (51), and a first elastic member (512) arranged between the first plate (51) and the outer shell (1); the limiting member comprises a first latching groove (311) arranged on the external plug connector (3); the first elastic member (512) drives the first plate (51) under the action of elastic force, so that the first latching protrusion (511) extends into the first latching groove (311) to prevent the external plug connector (3) from being disengaged from the first charging assembly.

4. The quick charger with a lock and anti-loosening function according to claim 3, characterized in that: A pressing portion (513) is provided at one end of the first plate (51) away from the first locking protrusion (511), and a first avoidance groove (15) for providing a rotation space for the pressing portion (513) is provided on the outer shell (1), and the pressing portion (513) is the unlocking component.

5. The fast charger with a lock and anti-loosening function according to claim 1, characterized in that: The first locking member comprises two second plates (52) rotatably arranged on the outer shell (1), a second latching protrusion (521) arranged on the second plate (52), and a second elastic member (522) for use with the second plate (52); the second latching protrusion (521) of the second plate (52) is used to block and abut against a limit member of an external plug connector (3), and the external plug connector (3) is located between the two second plates (52); One end of the second elastic member (522) is located between the second latching protrusion (521) of the first second plate body (52) and the rotation axis, the other end of the second elastic member (522) is located on the first end of the second second plate body (52), the rotation axis of the second second plate body (52) is located between the first end and the second end of the second second plate body (52), the second latching protrusion (521) of the second second plate body (52) is arranged at the second end of the second second plate body (52), and the unlocking component is used to cooperate with the second second plate body (52).

6. The quick charger with a locking function to prevent loosening according to claim 1, characterized in that: The first locking member comprises a linkage frame (53) movably arranged on the outer shell (1), a linkage plate (533) rotatably arranged on the outer shell (1), and two third plates (534) rotatably arranged on both sides of the plug-in frame (2); a first hook (531) and a second hook (532) are respectively provided at both ends of the linkage frame (53); the first hook (531) is linked to and cooperates with a third plate (534) via the linkage plate (533); the second hook (532) is used to link and cooperate with the unlocking component; the linkage frame (53) has a through hole for an external plug connector (3) to be plugged through; the external plug connector (3) is located between the two third plates (534); a third latching protrusion (535) is provided on the third plate (534); the third latching protrusion (535) is used to block and interfere with the limiting member.

7. The fast charger with a locking function according to claim 1, characterized in that: The port module (14) includes a first charging component (141) located in the plug-in frame (2), the external plug connector (3) is used to be inserted into the plug-in frame (2) and electrically connected to the first charging component (141), and the first charging component (141) is electrically connected to the external plug connector (3) for inputting external electric energy into the rechargeable battery module (12); the port module (14) also includes a second charging component (142) and a third charging component (143) electrically connected to the rechargeable battery module (12) via the control circuit board (13); the second charging component (142) and the third charging component (143) are used to cooperate with an external intelligent terminal to exchange electric energy.

8. The fast charger with a locking function to prevent loosening according to claim 1, characterized in that: The rechargeable battery module (12) includes a plurality of battery cells (121), and the plurality of battery cells (121) are connected in series or in parallel. The fast charger further includes a battery management module (7) disposed on a control circuit board (13) and electrically connected to the battery cells (121). The battery management module (7) is used to monitor the power demand of an external smart terminal when the smart terminal is connected to the port module (14), and to control the battery cells (121) to output electric energy to the smart terminal in an independent or combined manner.

9. The quick charger with a locking function to prevent loosening according to claim 8, characterized in that: The control circuit board (13) is provided with a fast charging module (8) and a temperature control and speed regulating module (9), the fast charging module (8) having a voltage detection unit and a temperature detection unit for monitoring the voltage value and temperature value of the battery cell (121), the fast charging module (8) also including a charging control chip, the charging control chip being used to adjust the charging power and charging path of the first charging component (141), the second charging component (142), and the third charging component (143) according to the voltage value and the temperature value; The temperature control and speed regulation module (9) is used to electrically cooperate with the temperature detection unit to send an early warning signal to the battery management module (7) when the operating temperature of the battery cell unit (121) exceeds a preset threshold value. The battery management module (7) is used to regulate the first charging component (141), the second charging component (142) and the third charging component (143) to enter a speed reduction charging mode according to the early warning signal.

10. The quick charger with a locking function to prevent loosening according to claim 2, characterized in that: The sliding assembly (6) further comprises an anti-derailment assembly, the anti-derailment assembly comprising a first chute (102) arranged on the outer shell (1), an anti-dropout slot (103) arranged in the first chute (102), and an anti-dropout protrusion (611) arranged on the sliding member (61); when the sliding plate (61) moves to the first position or the second position, the anti-dropout protrusion (611) cooperates with the anti-dropout slot (103) to limit the movement of the sliding plate (61).

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