Flat large-current waterproof connector

Abstract

The utility model discloses a flat type waterproof connector of large current, including casing, first circuit board and second circuit board in the casing and a plurality of plug that are located in the lateral surface of casing, be equipped with connecting terminal in the plug, the connecting terminal has first plug tongue and second plug tongue, be equipped with a plurality of first plug -in hole on the first circuit board, be equipped with a plurality of second plug -in hole on the second circuit board, first plug tongue and first plug -in hole on the first circuit board are mutually inserted and are connected, and second plug tongue and second plug -in hole on the second circuit board are mutually inserted and are connected. The utility model has the advantages of compact structure, strong current -carrying capacity, simple and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of wire connector technology, and in particular to a flat, high-current, waterproof connector. Background Technology

[0002] In fields such as prefabricated buildings, hotel decoration, and mobile container house construction, wire connectors, as key electrical components, are widely used for the rapid connection and installation of circuits. However, existing wire connectors on the market currently have many shortcomings in practical applications, severely restricting the development of related industries:

[0003] 1. Large size and poor space adaptability: Traditional electrical connectors usually adopt a circular structure, resulting in a large overall size. In environments with limited space, such as inside prefabricated wall panels, installation and wiring are severely restricted, making it difficult to meet the design requirements of miniaturization and high integration.

[0004] 2. Insufficient Current Carrying Capacity: Existing connectors typically use a single printed circuit board (PCB) soldered to the terminal tail. The terminal tail is often a simple pin-shaped or sheet-like structure, with limited contact area with the PCB, resulting in a significant bottleneck in current carrying capacity. For example, while common flat connectors are small in size, most use a spring-loaded structure, which has a low current overload capacity and cannot meet the 16-30A current requirements of household appliances in hotel rooms. To improve current carrying capacity and prevent overheating, traditional solutions usually increase the conductor diameter and the size of the connecting terminals. However, this leads to a significant increase in the overall size (especially thickness and volume), weight, and cost of the connector, which runs counter to the trend of device miniaturization and high-density integration.

[0005] 3. Cumbersome and error-prone installation: Existing high-current connectors require tools for assembly, and traditional high-current connectors require professional tools and personnel for installation. This is not only cumbersome to operate, but also prone to installation errors, increasing time and labor costs.

[0006] 4. Lack of flexibility and high cost: Existing connectors cannot be freely combined and matched according to actual needs. When faced with complex circuit connections, they often lack sufficient flexibility and require professional electricians to operate, which significantly increases installation and maintenance costs.

[0007] 5. Limited functionality and poor applicability: Conventional connectors are usually only suitable for a single interface and cannot meet the needs of multiple connections at the same time, which greatly limits their application scenarios.

[0008] Therefore, there is an urgent need to redesign and improve the existing technology to overcome these shortcomings, and this utility model was made based on this situation. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a flat, high-current waterproof connector that is compact in structure, has strong current carrying capacity, and is easy to install.

[0010] This utility model is achieved through the following technical solution:

[0011] To solve the above-mentioned technical problems, this utility model provides a flat high-current waterproof connector, including a housing, a first circuit board and a second circuit board disposed within the housing, and a plurality of plugs disposed on the side of the housing. The plugs are provided with connecting terminals, and the connecting terminals have a first tongue and a second tongue. The first circuit board is provided with a plurality of first insertion holes, and the second circuit board is provided with a plurality of second insertion holes. The first tongues are plugged into and electrically connected to the first insertion holes on the first circuit board, and the second tongues are plugged into and electrically connected to the second insertion holes on the second circuit board.

[0012] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a flat high-current waterproof connector in which the first circuit board and the second circuit board are arranged parallel to each other and there is a gap between them. The corresponding first insertion hole and the second insertion hole are opposite to each other, and the connection terminal extends into the gap between the first circuit board and the second circuit board from the side.

[0013] To further address the technical problems to be solved by this utility model, this utility model provides a flat high-current waterproof connector in which the connecting terminal is T-shaped, and the first tongue is the part of the connecting terminal that extends upward, and the second tongue is the part of the connecting terminal that extends downward.

[0014] In order to further solve the technical problems to be solved by this utility model, in the flat high-current waterproof connector provided by this utility model, the first tongue and the second tongue are both wedge-shaped.

[0015] In order to further solve the technical problems to be solved by this utility model, in the flat high-current waterproof connector provided by this utility model, the two sides of the first tongue are first wedge-shaped inclined surfaces that gradually slope from bottom to top towards the middle, and the two sides of the second tongue are second wedge-shaped inclined surfaces that gradually slope from top to bottom towards the middle.

[0016] In order to further solve the technical problems to be solved by this utility model, the first tongue and the second tongue of this utility model are both plate-shaped and perpendicular to the axial direction of the connecting terminal.

[0017] To further address the technical problems to be solved by this utility model, in the flat high-current waterproof connector provided by this utility model, the first tongue is reinforced by welding after being inserted into the first insertion hole, and the second tongue is also reinforced by welding after being inserted into the second insertion hole.

[0018] In order to further solve the technical problems to be solved by this utility model, the flat high-current waterproof connector provided by this utility model has a flat shell and each plug is also flat.

[0019] To further address the technical problems to be solved by this utility model, this utility model provides a flat high-current waterproof connector in which the housing includes an upper housing and a lower housing connected together; each plug also includes a plug housing; the edges of the upper housing and the lower housing secure the plug housing between them.

[0020] In order to further solve the technical problems to be solved by this utility model, a waterproof sealing ring is provided on the periphery of the plug insertion part in the flat high current waterproof connector provided by this utility model.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. This utility model adopts a dual-circuit board parallel design. By setting two parallel circuit boards (a first circuit board and a second circuit board) inside the connector and connecting the two circuit boards simultaneously using connection terminals, the current can be split through two paths, thereby effectively improving the overall current carrying capacity of the connector and solving the problem of traditional single-circuit board connectors easily overheating or even burning out in high-current applications. At the same time, the dual-circuit board structure also provides a larger heat dissipation area, further reducing the operating temperature of the connector and improving safety and reliability.

[0023] 2. The connecting terminal of this utility model adopts a T-shaped structure design. This special T-shaped structure allows the connecting terminal to be securely connected to both upper and lower circuit boards simultaneously. The two branches of the T-shaped structure (the first tongue and the second tongue) are respectively inserted into the insertion holes on the circuit board and fixed by insertion and soldering, forming a reliable mechanical interlocking structure. This structure not only improves the stability and vibration resistance of the connection, but also facilitates automated production and reduces production costs. In addition, the preferred wedge-shaped tongue design further enhances the reliability of the insertion and the contact area.

[0024] 3. The flattened shell and plug design is also a major highlight of this utility model. By designing the shell and plug as flat, the overall size of the connector is effectively reduced, making it easily applicable in confined spaces. This flattened design not only expands the connector's applicability but also makes installation and maintenance more convenient. Furthermore, the shell is ultrasonically welded, greatly increasing safety and reliability. Attached Figure Description

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a three-dimensional structural diagram of Embodiment 1;

[0027] Figure 2 This is an exploded view of Example 1;

[0028] Figure 3 This is a three-dimensional structural diagram of the connecting terminals;

[0029] Figure 4 This is a three-dimensional structural diagram of the male and female terminals;

[0030] Figure 5 This is a cross-sectional view of Embodiment 1;

[0031] Figure 6 This is a three-dimensional structural schematic diagram of Embodiment 2;

[0032] Figure 7 This is an exploded view of Example 2;

[0033] Figure 8 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] Please see Figures 1 to 5 This embodiment details a flat, high-current, waterproof connector with a compact structure, strong current carrying capacity, and high heat dissipation efficiency. The connector mainly consists of a housing 1, a first circuit board 2, a second circuit board 3, and multiple plugs 4, with connection terminals 41 inside the plugs 4.

[0037] Housing 1 is the outer shell of the connector, preferably made of flame-retardant and insulating engineering plastic, with an overall flat design to adapt to the application requirements of confined spaces. Housing 1 is formed by fastening and ultrasonically welding the upper shell 11 and the lower shell 12 together. After the upper shell 11 and the lower shell 12 are ultrasonically welded together, an internal seal is formed, which can prevent water and moisture, and has high safety and reliability.

[0038] To further enhance moisture protection, a waterproof sealing ring 43 is provided around the insertion part of the plug 4. The plug 4 is divided into male and female plugs, which can be inserted and mated with the corresponding plugs on the wires and cables (also divided into male and female plugs). When the plug 4 is inserted into the corresponding plug of the wire or cable, the two can press the waterproof sealing ring 43 tightly to form a sealed connection, which is waterproof, moisture-proof, and safer.

[0039] One of the core components of this invention is the first circuit board 2 and the second circuit board 3 housed within the housing 1. These two circuit boards are arranged parallel to each other vertically and are fixed in place by insulating supports (not shown in the figure) or the internal structure of the housing 1, with an appropriate gap between them. The width of this gap is not less than the thickness of the connecting terminal 41, providing space for the insertion of the connecting terminal 41. The first circuit board 2 and the second circuit board 3 are respectively provided with a plurality of first insertion holes 21 and second insertion holes 31. These insertion holes are positioned correspondingly to mate with the connecting terminal 41 inside the plug 4 to achieve circuit connection.

[0040] The plug 4 serves as a bridge connecting the connector to external wires and cables and their connectors, and is located on the side of the housing 1. The number of plugs 4 can be adjusted according to actual application requirements. Each plug 4 includes a plug housing 42, which is secured by the edges of the upper housing 11 and the lower housing 12, ensuring a stable connection between the plug 4 and the housing 1. A sealing ring is provided at the plug 4 for waterproofing. The connecting terminal 41 installed inside the plug housing 42 is a key component for achieving electrical connection.

[0041] The connecting terminal 41 is typically made of highly conductive copper or copper alloy material to ensure good conductivity. Its tail is designed with a unique T-shaped structure, with the upward-extending portion forming the first tongue 411 and the downward-extending portion forming the second tongue 412. The first tongue 411 is inserted into the first insertion hole 21 on the first circuit board 2, and the second tongue 412 is inserted into the second insertion hole 31 on the second circuit board 3, thereby electrically connecting the plug 4 to the two circuit boards.

[0042] To improve connection reliability, the first tongue 411 can be reinforced by soldering after being inserted into the first socket 21, and the second tongue 412 can be reinforced by soldering after being inserted into the second socket 31. Mature SMT (Surface Mount Technology), reflow soldering, or wave soldering processes are preferred, as these processes can form robust electrical and mechanical connections and facilitate automated mass production.

[0043] In particular, the upper end face of the first tongue 411 and the lower end face of the second tongue 412 can be designed as relatively wide and flat planes to increase the welding area and improve the welding strength.

[0044] A more preferred embodiment is that the first tongue 411 and the second tongue 412 can be designed as a wedge-shaped structure. Specifically, the two sides of the first tongue 411 can be a first wedge-shaped inclined surface 4111 that gradually slopes from bottom to top towards the middle, and the two sides of the second tongue 412 can be a second wedge-shaped inclined surface 4121 that gradually slopes from top to bottom towards the middle. This wedge-shaped design helps the tongues to be inserted into the socket more easily and provides greater contact pressure after insertion, thereby improving the reliability of the electrical connection.

[0045] Furthermore, the first tongue 411 and the second tongue 412 are preferably plate-shaped structures and are perpendicular to the axial direction of the connecting terminal 41. This plate-shaped structure can increase the contact area and conductive area, and further improve the current carrying capacity.

[0046] like Figure 2 , Figure 4 As shown, the connection terminal 41 is typically divided into a male terminal 41a and a female terminal 41b.

[0047] Furthermore, both the housing 1 and each of the plugs 4 are designed with a flat structure. The flat housing 1 not only effectively reduces the height of the connector in the vertical direction, but also, combined with the compact internal structure layout, significantly reduces the overall size of the connector, allowing for easy installation and use even in crowded or confined spaces.

[0048] For example, in modern architecture, especially in prefabricated buildings, hotel decoration, and mobile container house decoration, the arrangement of wires and cables is often limited by space, and traditional round or square connectors may be difficult to accommodate. However, the flat connector of this invention, like a "thin sheet," can be easily hidden in narrow spaces such as prefabricated wall panel interlayers, under floors, and inside ceilings, avoiding the occupation of additional visible space and maintaining the overall aesthetics.

[0049] Furthermore, each plug 4 also adopts a flat design, which complements the flat shell 1. The flat plug 4 reduces space occupation when connecting wires and cables, preventing excessive bending or twisting of the cables, thus ensuring the reliability and stability of the electrical connection. The flat design of the plug also facilitates plugging and unplugging operations in confined spaces, improving operational convenience.

[0050] In addition, the cable that mates with the connector is preferably a flat cable, and the plug on the flat cable is also a flat plug, which can further reduce the size.

[0051] The connector in this embodiment works as follows: When the plug 4 is inserted into the connector, the first tongue 411 and the second tongue 412 of the connecting terminal 41 make tight contact with and are soldered to the insertion holes on the first circuit board 2 and the second circuit board 3, respectively, forming an electrical path. Due to the parallel design of the dual circuit boards, current can be simultaneously diverted through two paths, thus significantly improving the current-carrying capacity of the entire connector. At the same time, the dual circuit board structure provides a larger heat dissipation area, effectively reducing the connector's operating temperature and improving safety and reliability.

[0052] like Figure 8 As shown, the connector of this utility model adopts a plug connection method, serving as a pivot node for wire and cable connections, greatly improving the convenience and scalability of the connection. Traditional wire and cable connections usually require professional electricians and specialized tools, which is not only cumbersome and time-consuming, but also difficult to modify or expand once the connection is completed. In contrast, the plug connection method of this utility model is like building blocks; simply inserting or removing the plug easily connects, disconnects, or reconfigures the circuit.

[0053] This quick-plug feature greatly facilitates the addition, removal, and adjustment of circuits. For example, when adding new electrical equipment, simply connect the new wires and cables to the connector via the plug; no complex soldering or disconnection work is required. Similarly, when removing or replacing equipment, simply unplug the corresponding plug. The entire process is simple and quick, greatly saving time and labor costs.

[0054] The flat, high-current, waterproof connector of this embodiment has the following significant advantages:

[0055] 1. Strong current carrying capacity: The dual-circuit board parallel design splits the single current path into two parallel paths, effectively improving the current carrying capacity.

[0056] 2. Excellent heat dissipation performance: The dual circuit board structure provides a larger heat dissipation area, reduces component temperature rise, and improves operational safety.

[0057] 3. Stable and reliable structure: The T-shaped design of the connection terminal 41 and its welding and fixing with the double circuit boards form a robust mechanical interlock structure with strong resistance to vibration and mechanical impact.

[0058] 4. Miniaturized design: The flat design achieves nearly double the current carrying capacity without increasing the overall thickness of the connector, resolving the contradiction between high current and miniaturization.

[0059] Example 2

[0060] like Figure 6 and Figure 7 As shown, the main difference between this embodiment and Embodiment 1 lies in the number and style of the plugs 4. The number and style of the plugs in Embodiment 1 are exemplary; in practical applications, they can be adjusted according to specific circuit connection requirements.

[0061] For example, the number of plugs 4 can be increased or decreased as needed, or different types of plugs (such as male plugs, female plugs, etc.) can be combined. By changing the number of male and female plugs, different circuit connection requirements can be met, improving the connector's applicability. For example, more plugs can be added when circuit expansion is needed; different types of plugs can be used when connecting different types of wires and cables.

[0062] Other structures and connection methods in this embodiment are the same as in Embodiment 1, such as the structure of the housing 1, the connection method of the circuit board, and the design of the connection terminal 41, which will not be repeated here. Embodiment 2 aims to illustrate that the flat high-current waterproof connector of this utility model has flexible configuration and can be customized according to different application scenarios to meet diverse needs.

[0063] In summary, the above two embodiments describe in detail the specific structure, working principle, and advantages of the flat, high-current, waterproof connector of this invention. By adopting a dual-circuit board parallel design, T-shaped connection terminals, and flexible plug configuration, this invention achieves advantages such as strong current carrying capacity, good heat dissipation performance, stable and reliable structure, and miniaturized design. It is suitable for applications in prefabricated buildings, hotel decoration, and mobile container house decoration, and has broad application prospects.

Claims

1. A flat, high-current, waterproof connector, characterized in that: The device includes a housing (1), a first circuit board (2) and a second circuit board (3) disposed within the housing (1), and a plurality of plugs (4) disposed on the side of the housing (1). Each plug (4) has a connection terminal (41) with a first tongue (411) and a second tongue (412). The first circuit board (2) has a plurality of first insertion holes (21), and the second circuit board (3) has a plurality of second insertion holes (31). The first tongue (411) is plugged into and electrically connected to the first insertion hole (21) on the first circuit board (2), and the second tongue (412) is plugged into and electrically connected to the second insertion hole (31) on the second circuit board (3).

2. The flat, high-current, waterproof connector according to claim 1, characterized in that: The first circuit board (2) and the second circuit board (3) are arranged in parallel vertically and are separated by a gap. The corresponding first insertion hole (21) and the second insertion hole (31) are opposite each other vertically, and the connecting terminal (41) extends from the side into the gap between the first circuit board (2) and the second circuit board (3).

3. A flat, high-current, waterproof connector according to claim 2, characterized in that: The connecting terminal (41) is T-shaped, and the first tongue (411) is the part of the connecting terminal (41) that extends upward, and the second tongue (412) is the part of the connecting terminal (41) that extends downward.

4. A flat, high-current, waterproof connector according to claim 3, characterized in that: Both the first tongue (411) and the second tongue (412) are wedge-shaped.

5. A flat, high-current, waterproof connector according to claim 4, characterized in that: The two sides of the first tongue (411) are first wedge-shaped inclined surfaces (4111) that gradually slope from bottom to top towards the middle, and the two sides of the second tongue (412) are second wedge-shaped inclined surfaces (4121) that gradually slope from top to bottom towards the middle.

6. A flat, high-current, waterproof connector according to claim 3, characterized in that: The first tongue (411) and the second tongue (412) are both plate-shaped and perpendicular to the axial direction of the connecting terminal (41).

7. A flat, high-current, waterproof connector according to claim 1, characterized in that: After the first tongue (411) is inserted into the first socket (21), it is reinforced by welding. After the second tongue (412) is inserted into the second socket (31), it is also reinforced by welding.

8. A flat, high-current, waterproof connector according to claim 1, characterized in that: The housing (1) is flat, and each of the plugs (4) is also flat.

9. A flat, high-current, waterproof connector according to claim 7, characterized in that: The housing (1) includes an upper shell (11) and a lower shell (12) connected together; each plug (4) also includes a plug shell (42); the edges of the upper shell (11) and the lower shell (12) hold the plug shell (42) between them.

10. A flat, high-current, waterproof connector according to claim 1 or 9, characterized in that: A waterproof sealing ring (43) is provided around the plug (4) insertion part.

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