A high-efficiency and reliable charging base

Abstract

The application discloses a kind of high-efficiency reliable charging stand, including upper shell, lower shell, circuit board assembly, coupler mounting seat and coupler body, circuit board assembly is fixed in upper shell by locking screw, coupler mounting seat is passed through the cooperation of the locking projection on it and the locking groove inclined surface on upper shell, and the plug-in force is transmitted to upper shell, the core of the present application is in locking groove is provided with steel ball driven by spring, and corresponding recess is provided on locking projection, when the two are locked in place, steel ball is clamped into recess to form axial mechanical lock, provide in-place feedback and effectively prevent vibration from loosening;The present application realizes radial positioning by plug and slot, and uses magnetic attraction block to enhance holding force, integrates modular assembly, efficient force transmission and dynamic anti-loosening mechanism, which significantly improves production efficiency, static strength and connection reliability in long-term vibration environment.

Description

Technical Field

[0001] This invention belongs to the field of charging equipment technology, and in particular relates to a high-efficiency and reliable charging stand. Background Technology

[0002] Currently, mainstream lithium battery charging sockets typically adopt a split-type structure design, separating the core electrical components from the mechanical structural components. Specifically, the power board and the coupler holder are two independent parts. The power board is usually fixedly installed inside the lower shell, while the coupler holder is installed on the upper shell. The electrical connection between the two relies on additional wires, which are then manually soldered to establish conductivity. Finally, the entire device is assembled by combining the upper and lower shells.

[0003] However, the aforementioned existing technical solutions have significant drawbacks. First, the assembly process is cumbersome and relies on manual welding, resulting in low production efficiency and high production costs. Second, welding quality is greatly affected by the operator's skill, easily leading to problems such as incomplete welds and cold welds, resulting in poor consistency and reliability of the product's electrical connections. Finally, and more fundamentally, the existing structure lacks systematic mechanical design and long-term reliability considerations: Firstly, there is no efficient force transmission path between the coupler holder and the power board. During repeated battery insertion and removal, external forces can easily act directly on the electrical solder joints, posing a risk of solder joint fatigue fracture over long-term use. Secondly, even with integrated structural improvements, the core connection parts of the charging holder generally lack effective dynamic anti-loosening mechanisms when facing continuous vibration in actual use scenarios such as vehicles and power tools. This can easily lead to loose connections, poor contact, and even safety hazards due to vibration. To address these issues, a high-efficiency and reliable charging holder is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency and reliable charging dock to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a high-efficiency and reliable charging dock, comprising a housing and an integrated functional module. The housing includes an upper shell and a lower shell that are interconnected. The integrated functional module includes a circuit board assembly and an electrical connection assembly mounted thereon, and is disposed within the housing. The circuit board assembly has a coupler mounting base and a coupler body, and is connected to the upper shell via a locking connector. The housing also includes a locking unit, a force transmission and coupling unit, and an anti-loosening locking unit. The force transmission and coupling unit includes a fastening protrusion on the coupler mounting base and a fastening groove on the upper shell. The fastening protrusion and the fastening groove cooperate to transmit the insertion and extraction force acting on the coupler body to the upper shell. The anti-loosening locking unit includes a mounting groove on the fastening groove, a spring located in the mounting groove, a spring-driven steel ball, and a recess on the fastening protrusion corresponding to the steel ball. When the fastening protrusion and the fastening groove are engaged to a predetermined position, the steel ball is engaged in the recess under the action of the spring.

[0006] Preferably, the locking unit includes a screw locking slot formed on the circuit board assembly and a locking screw threaded to the upper housing, the locking screw passing through the screw locking slot.

[0007] Preferably, the mating surface between the fastening protrusion and the fastening groove is an inclined surface.

[0008] Preferably, the locking screw is configured to drive the inclined surface of the engagement protrusion to press against the inclined surface of the engagement groove when tightened.

[0009] Preferably, the inner sidewall of the fastening groove is provided with a slot, and the corresponding side of the fastening protrusion is fixedly provided with an insert block, which is inserted into the slot.

[0010] Preferably, a first magnetic block is fixedly provided on the surface of the insert facing the slot, and a second magnetic block is fixedly provided on the inner wall of the slot, with the first magnetic block and the second magnetic block magnetically engaging with each other.

[0011] Preferably, the surface of the second magnetic block is fixedly covered with an elastic pad.

[0012] Preferably, a plurality of positioning posts are fixedly provided on the top surface of the inner wall of the upper shell, and the upper shell and the lower shell are aligned and fixedly connected through the positioning posts.

[0013] The present invention has the following beneficial effects: 1. This invention integrates the coupler mounting base and circuit board assembly into a single module and directly fixes it to the upper shell, eliminating the lead wire and manual soldering processes required in traditional solutions. This not only simplifies the assembly process, significantly improves production efficiency and reduces costs, but also eliminates quality fluctuations caused by variations in manual operation at the source. Simultaneously, the innovative inclined snap-fit ​​structure creates an efficient direct force transmission path, transferring the insertion and extraction force from the fragile electrical solder joints to the robust upper shell, significantly improving the product's static structural strength and impact resistance. 2. This invention integrates an axial mechanical locking unit consisting of a spring, steel balls, and a recess in the inclined snap-fit ​​structure. It provides a clear clicking sound and tactile feedback when assembled, achieving unambiguous judgment of the assembly status. Furthermore, when subjected to long-term vibration, it can effectively resist the tendency of axial loosening caused by vibration through the continuous tapping and holding effect of the steel balls on the recess under the action of the spring. This fundamentally solves the problem of long-term connection reliability of the charging base under harsh working conditions and achieves dynamic self-locking. 3. This invention achieves precise radial positioning through the cooperation of inserts and slots, and provides auxiliary holding and assembly guidance through the adsorption force of magnetic blocks, forming a synergistic anti-loosening system of axial mechanical locking and radial magnetic positioning. In addition, the upper and lower shells are precisely aligned and connected through positioning pins, further ensuring the stability of the overall structure and assembly accuracy. These features together constitute a comprehensive reliability solution from the core to the periphery, from static to dynamic, significantly improving the overall performance and market competitiveness of the product.

[0014] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the power board assembly structure of the present invention; Figure 2 This is a schematic diagram of the assembly structure of the upper shell and power board assembly of the present invention; Figure 3 This is a cross-sectional structural diagram of the entire machine when fastened together; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0017] The components represented by each number in the attached diagram are listed below: 1. Circuit board assembly; 2. Upper shell; 3. Lower shell; 4. Coupler mounting base; 5. Coupler body; 6. Snap-fit ​​protrusion; 7. Snap-fit ​​groove; 8. Screw locking slot; 9. Positioning post; 10. Locking screw; 11. Mounting groove; 12. Spring; 13. Steel ball; 14. Recess; 15. Slot; 16. Insert block; 17. First magnetic block; 18. Second magnetic block; 19. Elastic washer. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "upper," "middle," "outer," "inner," etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0020] Please see Figures 1-4 As shown, this invention is a high-efficiency and reliable charging dock, including a housing and an integrated functional module. The housing assembly includes an upper shell 2 and a lower shell 3 that can be connected to each other to form a closed accommodating space. To achieve precise alignment and secure connection between the two, in this embodiment, multiple positioning posts 9 are fixedly provided on the top surface of the inner wall of the upper shell 2. Correspondingly, positioning holes (not shown in the figure) adapted to the positioning posts 9 are provided on the lower shell 3. During assembly, the upper and lower shells are precisely positioned radially by inserting the positioning posts 9 into the positioning holes. Subsequently, bolts (or screws) can be screwed through the threaded holes at the ends of the lower shell 3 and the positioning posts 9 to reliably fix the upper shell 2 and the lower shell 3 together, forming a robust and sealed integral shell.

[0021] The integrated functional module is housed within a housing space. The module mainly includes a circuit board assembly 1 and electrical connection components mounted thereon.

[0022] Specifically, the electrical connection assembly consists of a coupler mounting base 4 and a coupler body 5. The coupler mounting base 4 is directly and firmly fixed to a predetermined position on the upper surface of the circuit board assembly 1 through an automated soldering process (such as wave soldering or reflow soldering). The coupler body 5 is pre-installed on the coupler mounting base 4, and its electrical pins are electrically connected to the corresponding pads on the circuit board assembly 1 while the coupler mounting base 4 is being soldered. This design completely abandons the traditional approach of separating the power board and the coupler and then connecting them by soldering wires. This allows the circuit board assembly 1, the coupler mounting base 4, and the coupler body 5 to be integrated into a non-removable integrated functional unit in the early stages of production. This not only simplifies the number of components but also lays the foundation for efficient modular assembly in the future.

[0023] To reliably install the aforementioned integrated functional modules within the housing and establish an efficient mechanical transmission path, this invention designs a dual fixing and connection structure.

[0024] First, the integrated functional module is directly connected and fixed to the upper shell 2. This is achieved through a locking connector. At least one screw locking slot 8 is provided on the bottom surface of the circuit board assembly 1. Correspondingly, a threaded connection part is provided on the inner side of the upper shell 2. During assembly, the locking screw 10 is used to pass through the screw locking slot 8 and engage with the threaded connection part of the upper shell 2, thereby directly tightening and fixing the entire integrated functional module (i.e., the circuit board assembly 1 and the electrical connection components integrated on it) to the inner side of the upper shell 2. This fixing method allows the assembly position of the integrated functional module to be directly determined by the upper shell 2, changing the layout of the power board fixed to the lower shell in the traditional design, which is the key to simplifying the overall assembly process.

[0025] Secondly, there is a mechanical coupling structure between the electrical connection component and the upper shell 2, which is used to handle external insertion and extraction forces. This is another core design of the present invention. On the outer side of the coupler mounting base 4 facing the side wall of the shell, a snap-fit ​​protrusion 6 is formed, and on the inner side wall of the corresponding position of the upper shell 2, a snap-fit ​​groove 7 matching the snap-fit ​​protrusion 6 is formed. Preferably, the mating surfaces of the snap-fit ​​protrusion 6 and the snap-fit ​​groove 7 are designed as mutually matching inclined slopes.

[0026] When the integrated functional module is placed inside the upper shell 2, the snap-fit ​​protrusion 6 on the coupler mounting base 4 needs to be aligned and initially embedded in the snap-fit ​​groove 7 of the upper shell 2. When the locking screw 10 is tightened later, the locking force generated by the screw will drive the entire circuit board assembly 1 and the coupler mounting base 4 to produce a small displacement, forcing the inclined surface of the snap-fit ​​protrusion 6 to slide along the inclined surface of the snap-fit ​​groove 7 and finally press tightly together. This inclined surface pressing generates a huge normal friction force, realizing the mechanical interlock between the coupler mounting base 4 and the upper shell 2.

[0027] When the battery is inserted or removed, the axial insertion and extraction force applied to the coupler body 5 is transmitted to the locking protrusion 6 through the coupler mounting base 4. Since the locking protrusion 6 and the locking groove 7 on the upper shell 2 are tightly pressed together by the inclined surface, the external force is immediately decomposed. The component force perpendicular to the inclined surface acts directly as a positive pressure and is transmitted to the robust upper shell 2 body, while the component force along the inclined surface is balanced by the preload generated by the locking screw 10. Therefore, most of the external insertion and extraction force is effectively "guided" to the upper shell 2, the main load-bearing structure, and avoids being transmitted to the electrical solder joint between the circuit board assembly 1 and the coupler mounting base 4, thereby greatly improving the structural reliability and electrical connection stability of the product under long-term repeated use.

[0028] An installation groove 11 is machined on the top inner wall of the fastening groove 7. A spring 12 and a steel ball 13 are sequentially arranged in the installation groove 11. One end of the spring 12 is fixed to the bottom of the installation groove 11, and the other end is connected to the steel ball 13, providing continuous elastic downward pressure to the steel ball 13. On the top upper surface of the fastening protrusion 6, a recess 14 with a shape matching the steel ball 13 is correspondingly opened. When the fastening protrusion 6 is inserted into the fastening groove 7, its top slope pushes the steel ball 13 upward, compressing the spring 12; when the fastening protrusion 6 slides to the predetermined position of being fully in place, the recess 14 moves exactly to the bottom of the steel ball 13. At this time, the steel ball 13 quickly gets stuck in the recess 14 under the restoring force of the spring 12. This action not only provides the operator with a clear "click" feel and auditory feedback, indicating that the assembly is in place, but more importantly, the steel ball 13 is inserted into the recess 14 to form direct mechanical interference, effectively resisting axial vibration and impact, preventing the fastening protrusion 6 from accidentally coming out of the fastening groove 7, thus forming the first reliable anti-dislodgement mechanism.

[0029] A slot 15 is provided on the L-shaped inner wall of the locking groove 7. Correspondingly, an insert 16, precisely matched in shape and size to the slot 15, is fixedly provided on the side of the locking protrusion 6. The insertion of the insert 16 achieves precise radial positioning, effectively preventing circumferential rotation or radial wobbling of the coupler mounting base 4 during use. To further enhance the holding force and optimize the assembly experience, a first magnetic block 17 is embedded on the surface of the insert 16 facing the slot 15, and a second magnetic block 18 is embedded at a corresponding position on the inner wall of the slot 15. When the insert 16 is aligned and inserted into the slot 15, the first magnetic block 17 and the second magnetic block 18 approach each other and generate a magnetic attraction. This magnetic attraction provides adsorption guidance at the assembly end, helping the component to automatically align in place; on the other hand, it provides continuous auxiliary holding force after assembly, complementing the axial mechanical locking, forming a second layer of anti-drop protection. In addition, an elastic gasket 19 is also attached and fixed to the surface of the second magnetic block 18. The functions of the elastic pad 19 are: first, to buffer the impact and noise that may be generated when the first magnetic block 17 and the second magnetic block 18 directly contact and collide; second, to utilize its small deformation capability to ensure that the magnetic surfaces can still fit fully and maintain the best magnetic attraction effect when there are small assembly tolerances; and third, to provide a certain amount of damping for the entire locking interface and improve the stress state.

[0030] Working principle: By integrating the coupler mounting base 4 and the circuit board assembly 1 into a single module, and using locking screws 10 passing through screw locking slots 8 to fix it entirely to the upper shell 2; simultaneously, the fastening protrusion 6 on the coupler mounting base 4 and the fastening slot 7 on the upper shell 2 form an inclined engagement, forcing the inclined surfaces of the two to press tightly together when the locking screws 10 are tightened, thereby constructing a force transmission path from the coupler body 5 through the coupler mounting base 4 directly to the upper shell 2; when the battery is inserted or removed, the external force acting on the coupler body 5 is decomposed and transmitted to the upper shell 2, which is the main load-bearing structure, through this inclined engagement structure, effectively avoiding the external force acting on the electrical welding points, and significantly improving the structural reliability and service life; when the fastening protrusion 6 is inserted into the fastening slot 7, its top inclined surface will... The steel ball 13 in the slot 11 pushes up and compresses the spring 12; until the locking protrusion 6 is fully in place, the recess 14 on its top moves to directly below the steel ball 13. Under the restoring force of the spring 12, the steel ball 13 quickly gets stuck into the recess, forming the first layer of axial mechanical locking and providing positioning feedback; at the same time, the insert block 16 on the side of the locking protrusion 6 is inserted into the slot 15 on the side wall of the locking groove 7 to achieve radial positioning and anti-rotation. The first magnetic block 17 and the second magnetic block 18 embedded in the insert block 16 and the slot 15 then attract each other to form the second layer of magnetic auxiliary locking. The elastic pad 19 on its surface plays a buffering and damping role; the axial mechanical locking and radial magnetic positioning work together to form a dual anti-dislodgement mechanism, which together ensures the long-term reliability of the connection point under vibration and impact.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency and reliable charging dock, comprising a housing and an integrated functional module, characterized in that, The housing includes an upper shell (2) and a lower shell (3) that can be connected to each other. The integrated functional module includes a circuit board assembly (1) and an electrical connection assembly mounted thereon. The integrated functional module is disposed inside the housing. The circuit board assembly (1) is provided with a coupler mounting base (4) and a coupler body (5), and the circuit board assembly (1) and the upper shell (2) are connected by a locking connector. The housing is also equipped with a locking unit, a force transmission and coupling unit, and an anti-loosening locking unit. The force transmission and coupling unit includes a snap-fit ​​protrusion (6) on the coupler mounting base (4) and a snap-fit ​​groove (7) on the upper shell (2). The snap-fit ​​protrusion (6) and the snap-fit ​​groove (7) cooperate with each other to transmit the insertion and extraction force acting on the coupler body (5) to the upper shell (2). The anti-loosening locking unit includes a mounting groove (11) set on the fastening groove (7), a spring (12) located in the mounting groove (11), a steel ball (13) driven by the spring (12), and a recess (14) set on the fastening protrusion (6) and corresponding to the steel ball (13). When the fastening protrusion (6) and the fastening groove (7) are engaged to a predetermined position, the steel ball (13) is locked into the recess (14) under the action of the spring (12).

2. The high-efficiency and reliable charging dock according to claim 1, characterized in that, The locking unit includes a screw locking slot (8) opened on the circuit board assembly (1) and a locking screw (10) threaded to the upper shell (2), the locking screw (10) passing through the screw locking slot (8).

3. The high-efficiency and reliable charging dock according to claim 2, characterized in that, The mating surfaces of the fastening protrusion (6) and the fastening groove (7) are inclined surfaces.

4. The high-efficiency and reliable charging dock according to claim 3, characterized in that, The locking direction of the locking screw (10) is configured to drive the inclined surface of the engaging protrusion (6) to press against the inclined surface of the engaging groove (7) when tightened.

5. The high-efficiency and reliable charging dock according to claim 1, characterized in that, The inner wall of the fastening groove (7) is provided with a slot (15), and the corresponding side of the fastening protrusion (6) is fixedly provided with a plug (16), which is inserted into the slot (15).

6. The high-efficiency and reliable charging dock according to claim 5, characterized in that, The insert (16) is fixedly provided with a first magnetic block (17) on the surface facing the slot (15), and a second magnetic block (18) is fixedly provided on the inner wall of the slot (15). The first magnetic block (17) and the second magnetic block (18) magnetically attract each other.

7. The high-efficiency and reliable charging dock according to claim 6, characterized in that, The surface of the second magnetic block (18) is fixedly covered with an elastic pad (19).

8. The high-efficiency and reliable charging dock according to claim 1, characterized in that, The top surface of the inner wall of the upper shell (2) is fixedly provided with several positioning posts (9), and the upper shell (2) and the lower shell (3) are aligned and fixedly connected through the positioning posts (9).

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