A board-to-board female connector and a connector assembly

Abstract

The utility model discloses a kind of board-to-board female end connector, including female end insulating base, multiple first conductive terminals, multiple second conductive terminals, wherein the female end insulating base is the outline of multiple branch structure, it has at least three self-center region outwardly extending arm;At least one the second conductive terminal with one the first conductive terminal is adjacently arranged on the same arm of the female end insulating base. Board-to-board connector assembly comprising male end connector and the aforementioned female end connector is also provided. According to the space layout and electrical requirements of terminal circuit board, the connector can maximize the use of the specific remaining space of the circuit board. The first conductive terminal integrates the dispersed power supply into a power supply group, increasing the metal ratio while retaining multiple flexible contacts. The through-flow path is shortened, the through-flow efficiency is improved, and the overall connector assembly saves space and meets large current through-flow.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a board-to-board female connector and connector assembly. Background Technology

[0002] With the increasing performance of smart devices, larger screen sizes, and more frequent user usage, battery anxiety has become a widespread problem. Improving charging speed has become the most direct and effective way to address this anxiety.

[0003] Traditional fast charging solutions for smart devices involve setting up two identical sets of high-current connectors on the circuit board. However, these two sets of connectors require almost twice the space of the motherboard. The interior of a smart device is a battlefield where every inch of space is precious, and every square millimeter of PCB space is extremely valuable. This undoubtedly restricts the innovation of smart device functions or prevents the optimization of motherboard space layout.

[0004] Therefore, there is a need for a connector that can make full use of circuit board space and meet the requirements of high-current fast charging, providing a new solution for fast charging of smart terminals. Utility Model Content

[0005] The purpose of this invention is to overcome the problems mentioned above in the background technology: to provide a board-to-board female connector and connector assembly, which can be selected and designed according to the spatial layout and electrical requirements of the terminal circuit board, so that the connector can maximize the use of the specific remaining space of the circuit board and meet the requirements of high current carrying capacity; and to provide a solution for integrating two sets of high current connectors into one unit, providing more solutions for the spatial planning of the terminal circuit board.

[0006] The technical solution adopted in this utility model is:

[0007] A board-to-board female connector includes: a female insulating base, the female insulating base having a female sidewall, a female endwall, and a central island protrusion protruding from the bottom of the female insulating base along the insertion direction;

[0008] Multiple first conductive terminals are fixed in the end wall of the female end and the side wall of the female end connected to the end wall of the female end, and have a contact portion exposed from the insertion side of the female end insulating base, and a solder portion exposed from the back of the insertion side for connection with the circuit board.

[0009] Multiple second conductive terminals are fixed inside the side wall of the female end and have contact portions exposed from the insertion side of the female end insulating base and solder portions exposed from the back of the insertion side for connection with the circuit board.

[0010] The outer contour of the female end insulating base is a multi-branch structure, the multi-branch structure having at least three arms extending outward from a central region; at least one second conductive terminal and one first conductive terminal are arranged adjacent to each other on the same arm of the female end insulating base.

[0011] As a further improvement to the above technical solution, the first conductive terminal is an integrally formed component, which includes a central island protection portion disposed on the central island protrusion, an end wall guide portion disposed on the end wall of the female end, and a power conductor portion having multiple elastic contact arms.

[0012] As a further improvement to the above technical solution, the welding portion of the first conductive terminal is disposed in the projection area of ​​the end wall guide portion and the plurality of elastic contact arms on the back of the female end insulating base.

[0013] As a further improvement to the above technical solution, the female end insulating base has a multi-branch structure in the shape of a cross, with the first conductive terminal disposed at the ends of the four arms of the cross and the second conductive terminal disposed on the four arms near the central region.

[0014] As a further improvement to the above technical solution, the female end insulating base has a T-shaped multi-branch structure, with the first conductive terminal disposed at the ends of the three arms of the T-shape, and the second conductive terminal disposed on the three arms near the central region.

[0015] As a further improvement to the above technical solution, the female end insulating base is provided with a central island in the central region, and the central island is aligned with the central island protrusion on each of the support arms.

[0016] This application also provides a board-to-board connector assembly, including the aforementioned board-to-board female connector and board-to-board male connector; the board-to-board male connector includes:

[0017] The male end insulating base has a multi-branch structure that matches the female end insulating base in shape, and has a male end sidewall, a male end wall, and a male end recess.

[0018] It also includes multiple third conductive terminals and multiple fourth conductive terminals. When the board-to-board male connector and the board-to-board female connector are connected, the third conductive terminal is inserted into the first conductive terminal, and the fourth conductive terminal is inserted into the second conductive terminal.

[0019] Furthermore, the third conductive terminal is an integrally formed U-shaped structure, which is disposed on the male end wall and the male side wall adjacent to the male end wall.

[0020] Furthermore, the U-shaped structure of the third conductive terminal is provided with a notch, and the notch is located inside the corner between the male end sidewall and the male end wall.

[0021] Furthermore, the male end insulating base has a multi-branched structure with a cross-shaped or T-shaped shape.

[0022] Compared with the prior art, the beneficial effects of the board-to-board female connector and connector assembly provided by this utility model are as follows: it can be selected and designed according to the spatial layout and electrical requirements of the terminal circuit board, so that the connector can maximize the use of the specific remaining space of the circuit board; the first conductive terminal has an integrated component for transmitting large current, protecting the central island protrusion, and guiding function, integrating the distributed power supply into an integrated power group, increasing the metal ratio, while retaining multiple flexible contacts, shortening the current path, improving the current carrying efficiency, and integrating to save overall space and facilitate layout; the third conductive terminal is an integrated stamping structure, which reduces the difficulty of product manufacturing, and the overall connector assembly adopts a space-saving design that meets the requirements of large current carrying capacity. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is an exploded perspective view of the board-to-board female connector provided in Embodiment 1 of this utility model;

[0025] Figure 2 This is a schematic diagram of the board-to-board female connector structure provided in Embodiment 1 of this utility model;

[0026] Figure 3 This is a schematic diagram of the board-to-board male connector structure provided in Embodiment 1 of this utility model;

[0027] Figure 4 A schematic diagram of the first conductive terminal structure provided by this utility model;

[0028] Figure 5 A schematic diagram of the third conductive terminal structure provided by this utility model;

[0029] Figure 6 This is a schematic diagram of the board-to-board connector assembly provided in Embodiment 1 of this utility model;

[0030] Figure 7 A cross-sectional view along AA' of the board-to-board connector assembly provided in Embodiment 1 of this utility model;

[0031] Figure 8 A cross-sectional view along BB' of the board-to-board connector assembly provided in Embodiment 1 of this utility model;

[0032] Figure 9 A cross-sectional view along CC' of the board-to-board connector assembly provided in Embodiment 1 of this utility model;

[0033] Figure 10 This is a schematic diagram of the board-to-board female connector structure provided in Embodiment 2 of this utility model;

[0034] Figure 11 This is a schematic diagram of the board-to-board male connector structure provided in Embodiment 2 of this utility model;

[0035] Figure 12 This is a schematic diagram of the board-to-board connector assembly structure provided in Embodiment 2 of this utility model;

[0036] Figure 13 This is a schematic diagram of the connection between the board-to-board connector assembly and the circuit board provided in Embodiment 2 of this utility model;

[0037] Figure 14 This is a schematic diagram of the connection between the board-to-board connector assembly and the circuit board provided in Embodiment 1 of this utility model.

[0038] The components represented by each number in the attached diagram are explained below:

[0039] 01-Board to board female connector, 02-Board to board male connector, 1-Female insulating base, 101-Female sidewall, 102-Female endwall, 103-Center island protrusion, 104-Center island, 2-First conductive terminal, 201-Center island protection, 202-Power conductor, 203-Endwall guide, 204-Elastic contact arm, 205-Fixed arm, 206-Fixed bend, 3-Second conductive terminal, 4-Third conductive terminal, 401-Notch, 5-Fourth conductive terminal, 6-Male insulating base, 601-Male sidewall, 602-Male endwall, 603-Male recess, 7-Soldering part, 8-Circuit board.

[0040] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0042] refer to Figure 1-2 and Figure 10This application provides a board-to-board female connector, comprising: a female insulating base 1, the female insulating base 1 having a female sidewall 101, a female endwall 102, and a central island protrusion 103 protruding from the bottom of the female insulating base 1 along the insertion direction; a plurality of first conductive terminals 2, which are fixed in the female endwall 102 and the female sidewall 101 connected to the female endwall, and have a contact portion exposed from the insertion side of the female insulating base 1, and a solder portion 7 exposed from the back of the insertion side for connection with a circuit board 8; and a plurality of second conductive terminals 3, which are fixed in the female sidewall. Within 101, there is a contact portion exposed from the insertion side of the female end insulating base 1, and a solder portion 7 exposed from the back of the insertion side for connection with the circuit board 8; wherein, the outer contour of the female end insulating base 1 is a multi-branch structure, the multi-branch structure has at least three arms extending outward from a central region; at least one second conductive terminal 3 and one first conductive terminal 2 are arranged adjacent to each other on the same arm of the female end insulating base 1; specifically, the arm includes a female end wall 102, two female end side walls 101, and a central island protrusion 103.

[0043] By adopting the structure of this embodiment, the number of the first conductive terminal 2 and the second conductive terminal 3, as well as the external shape of the female end insulating base 1, can be selected and designed according to the spatial layout and electrical requirements of the terminal circuit board 8, thereby determining the target combination of the first conductive terminal 2 and the second conductive terminal 3 and the external shape of the female end insulating base 1.

[0044] After determining the number and layout of the first conductive terminal 2 and the second conductive terminal 3, the first conductive terminal 2 and the second conductive terminal 3 are integrally encapsulated in insulating plastic material through an insert injection molding process, forming a board-to-board female connector 01 having a female insulating base 1 including the aforementioned female end sidewall 101, female end end wall 102, and central island protrusion 103. This allows the final formed connector to maximize the use of the specific remaining space on the circuit board.

[0045] refer to Figure 4 In this embodiment, the first conductive terminal 2 is an integrally formed component, which includes a central island protection portion 201 disposed on the central island protrusion 103, an end wall guide portion 203 disposed on the female end wall 102, and a power conductor portion 202 having a plurality of elastic contact arms 204.

[0046] The first conductive terminal 2 integrates three functional components into a single structure: a central island protection portion 201 that protects the central island protrusion 103, a power conductor portion 202 that transmits current and protects the female end sidewall 101, and an end wall guide portion 203 that protects and guides the female end wall 102. This integrated structure helps reduce the overall size of the connector to meet the miniaturization requirements of smart terminal devices. Furthermore, the integrated first conductive terminal 2 improves material utilization, shortens assembly processes, and reduces the risk of assembly errors. The integrated metal structure of the first conductive terminal 2 integrates distributed power supplies into a single power group while retaining multiple flexible contacts, shortening the current path, improving current efficiency, and saving overall space and layout.

[0047] Furthermore, the first conductive terminal 2 has a fixed bend 206 at the end of the central island protection section 201 away from the end wall guide section 203; the power conductor section 202 also has a fixed arm 205, which is a structure in which the outer side of the power conductor section 202 extends along the direction of the female end side wall 101 and bends at the female end end wall 102; the above-mentioned multiple elastic contact arms are respectively disposed between the power conductor section 202 and the central island protection section, and on the fixed arm 205.

[0048] Furthermore, the first conductive terminal 2 has a guiding arc surface on the portion of the end wall guide portion 203 and the power conductor portion 202 that covers the end wall 102 and the side wall 101 of the female end, thereby improving the guiding performance of the first conductive terminal 2.

[0049] Simultaneously combined Figure 1 The female end insulating base 1 is provided with corresponding fixing holes at the elastic contact arm 204. The fixing holes can increase heat dissipation capacity.

[0050] Continue to refer to Figure 4 In this embodiment, the welding portion 7 of the first conductive terminal 2 is disposed in the projection area of ​​the end wall guide portion 203 and the plurality of elastic contact arms 204 on the back of the female end insulating base 1.

[0051] The welding part 7 can be block-shaped, sheet-shaped, etc., and the specific structure of the welding part 7 is not limited in this embodiment. In this embodiment, the specific location of the welding part 7 is relatively short from each contact part, thus shortening the current flow path and improving the current flow efficiency.

[0052] Example 1:

[0053] refer to Figures 1-9 as well as Figure 14 In a preferred embodiment, the female end insulating base 1 has a multi-branch structure in the shape of a cross, with the first conductive terminal 2 disposed at the ends of the four arms of the cross and the second conductive terminal 3 disposed on the four arms near the central area.

[0054] In this layout, four first conductive terminals 2, serving as high-current power supply terminals, are respectively located at the far ends of the four arms. This layout achieves multi-point and peripheral distribution of power contacts, which is beneficial for balanced current distribution and power supply stability of the connector. Second conductive terminals 3, serving as signal terminals, are arranged in pairs and adjacent to each other on the four arms near the central area. Specifically, one second conductive terminal 3 can be provided on each arm according to actual conditions, making it adjacent to the first conductive terminal 2 on the same arm.

[0055] The corresponding male insulating base 6 also has a cross-shaped structure. Multiple third conductive terminals 4 are installed inside to engage with the first conductive terminal 2 of the female end, forming a power path; multiple fourth conductive terminals 5 are used to engage with the second conductive terminal 3 of the female end, forming a signal path. The terminal layout of the male end corresponds one-to-one with that of the female end, ensuring correct engagement.

[0056] The central island protrusion 103 on each support arm engages with the male end recess 603, serving as a primary guide and preventing mis-insertion. Furthermore, the central island 104 protrudes from the central area of ​​the cross shape along the insertion direction, engaging with the corresponding groove in the center of the male end insulating base 6 to form a secondary guide and mechanical reinforcement, significantly enhancing the connector assembly's resistance to torsion and lateral forces in the mating state.

[0057] This cross-shaped embodiment is particularly suitable for compact circuit board spaces requiring multi-directional, high-density wiring. By placing high-current terminals at the four corners and recessing signal terminals, it achieves power and signal isolation, reduces interference, and maximizes the use of board space.

[0058] Electronic devices and other terminals typically use two pairs of board-to-board connectors to achieve high-current fast charging. This application, while maintaining the same length space for the board-to-board connectors, utilizes the width direction expansion. The board-to-board female connector 01 integrates the traditional metal reinforcement, intermediate protective component, and a pair of power terminals into a single structure, while retaining multiple flexible contacts. Furthermore, the width-direction expansion structure of the board-to-board female connector 01 is vertically intersecting and injection-molded, achieving a two-in-one design that saves space compared to two separate pairs while meeting the requirements for high current carrying capacity of 20A and above. The integrated metal structure combines distributed power supplies into a single power group, shortening the current path, improving current carrying efficiency, and saving overall space and layout.

[0059] Example 2:

[0060] refer to Figures 10-13In another preferred embodiment, the female end insulating base 1 has a T-shaped multi-branch structure. The first conductive terminal 2 is disposed at the ends of the three arms of the T-shape, and the second conductive terminal 3 is disposed on the three arms near the central region. The female end insulating base 1 has a central island 104 in the central region, which is aligned with the central island protrusions 103 on each arm.

[0061] This embodiment features an asymmetrical layout. In this embodiment, three first conductive terminals 2 serve as high-current power supply terminals and are respectively disposed at the distal ends of the three arms. Three second conductive terminals 3 serve as signal terminals and are respectively disposed on the three arms near the central region, adjacent to the first conductive terminals 2 on the same arm.

[0062] The corresponding male insulating base 6 is also a matching T-shaped structure. This asymmetrical shape itself constitutes a mis-insertion prevention structure, ensuring that the male and female terminals can only be inserted in one correct direction.

[0063] Similarly, the central island protrusion 103 on each support arm engages with the male end recess 603. The central island 104 is located at the intersection of the T-shape, further enhancing the structural stability and guiding accuracy of the connector assembly.

[0064] This T-shaped embodiment is specifically designed for use in confined spaces such as the edges or corners of circuit boards. Its asymmetrical structure saves space and provides natural protection against mis-insertion, making it particularly suitable for use in scenarios with irregular internal layouts where other components (such as batteries, camera modules, and heat sinks) need to be avoided.

[0065] refer to Figures 6-14 This application also provides a board-to-board connector assembly, including a board-to-board male connector 02 and a board-to-board female connector 01; the board-to-board male connector 02 includes:

[0066] The male end insulating base 6 has a multi-branch structure that matches the female end insulating base 1 in shape, and has a male end sidewall 601, a male end wall 602, and a male end recess 603.

[0067] It also includes multiple third conductive terminals 4 and multiple fourth conductive terminals 5. When the board-to-board male connector 02 and the board-to-board female connector 01 are connected, the third conductive terminal 4 engages with the first conductive terminal 2, and the fourth conductive terminal 5 engages with the second conductive terminal 3. The male insulating base 6 has a multi-branched structure, with a shape generally cross-shaped, T-shaped, L-shaped, or right-angled. The male connector and the female connector are soldered to the circuit board respectively, and then... Figure 13 and Figure 14When the board-to-board male connector 02 is inserted into the board-to-board female connector 01 along the insertion direction, electrical connection and mechanical locking between the two circuit boards are achieved.

[0068] refer to Figure 3 , Figures 6-9 , Figures 11-14 In this embodiment, the board-to-board connector assembly has a female insulating base 1 and a male insulating base 6, both of which are constructed as multi-branch structures. This structure is not a traditional rectangle, but is customized according to the layout of the remaining space on the circuit board, such as cross-shaped, T-shaped, L-shaped, etc. This design allows the connector to actively adapt to and maximize the filling of irregular remaining space on the circuit board, rather than requiring the circuit board to reserve a regular rectangular area for it.

[0069] In addition, combined Figure 4 The third conductive terminal 4 is an integrally formed U-shaped structure, which is disposed on the male end wall 602 and the male end side wall 601 adjacent to the male end wall 602.

[0070] Furthermore, the U-shaped structure of the third conductive terminal 4 is provided with a notch 401, and the notch 401 is located inside the corner of the male end sidewall 601 and the male end wall 602.

[0071] The aforementioned third conductive terminal 4 is an integrally stamped structure. A notch 401 is formed on the inner side of the bend at the bottom of the U-shaped structure to avoid the need for stamping guide surfaces at the corners. Using the third conductive terminal 4 provided in this embodiment reduces the manufacturing difficulty of the product. Simultaneously, the notch 401 increases heat dissipation capacity.

[0072] This invention addresses the need for board-to-board female connectors in space-constrained installation locations requiring maneuverability and in scenarios requiring dual-channel parallel operation. A board-to-board female connector is proposed, comprising: a female insulating base 1, multiple first conductive terminals 2, and multiple second conductive terminals 3. The female insulating base 1 has a multi-branched outer profile, with at least three arms extending outward from a central region. At least one second conductive terminal 3 and one first conductive terminal 2 are arranged adjacent to each other on the same arm of the female insulating base 1. A board-to-board connector assembly including a board-to-board male connector 02 and the aforementioned board-to-board female connector 01 is also provided. The board-to-board female connector and connector assembly can be selected and designed according to the spatial layout and electrical requirements of the terminal circuit board 8, so that the connector can maximize the use of the specific remaining space of the circuit board; the first conductive terminal 2 has an integrated component for transmitting large current, protecting the central island protrusion 103, and guiding function, integrating the distributed power supply into an integrated power group, increasing the metal ratio, while retaining multiple flexible contacts, shortening the current path, improving current efficiency, and integrating to save overall space and facilitate layout; the third conductive terminal 4 is an integrated stamping structure, which reduces the difficulty of product manufacturing, and the overall connector assembly adopts a space-saving design that meets the requirements of large current carrying capacity.

[0073] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above embodiments are preferred embodiments of this utility model, but not all embodiments. Any equivalent changes to the technical solutions of this utility model made by those skilled in the art after reading this utility model specification are covered by the claims of this utility model.

Claims

1. A board-to-board female connector, characterized in that, include: The female end insulating base (1) has a female end sidewall (101), a female end wall (102), and a central island protrusion (103) protruding from the bottom of the female end insulating base (1) along the insertion direction. Multiple first conductive terminals (2) are fixed in the female end wall (102) and the female end side wall (101) connected to the female end wall, and have a contact portion exposed from the insertion side of the female end insulating base (1) and a solder portion (7) exposed from the back of the insertion side for connection with the circuit board (8). Multiple second conductive terminals (3) are fixed to the sidewall of the female end (101) and have a contact portion exposed from the insertion side of the female end insulating base (1) and a solder portion (7) exposed from the back of the insertion side for connection with the circuit board (8). The outer contour of the female end insulating base (1) is a multi-branch structure, which has at least three arms extending outward from a central region; at least one second conductive terminal (3) and one first conductive terminal (2) are arranged adjacent to each other on the same arm of the female end insulating base (1).

2. The board-to-board female connector according to claim 1, characterized in that, The first conductive terminal (2) is an integrally formed component, which includes a central island protection part (201) disposed on the central island protrusion (103), an end wall guide part (203) disposed on the female end wall (102), and a power conductor part (202) having multiple elastic contact arms (204).

3. The board-to-board female connector according to claim 2, characterized in that, The welding portion (7) of the first conductive terminal (2) is disposed in the projection area of ​​the end wall guide portion (203) and the plurality of elastic contact arms (204) on the back of the female end insulating base (1).

4. The board-to-board female connector according to claim 1, characterized in that, The female end insulating base (1) has a multi-branch structure in the shape of a cross. The first conductive terminal (2) is located at the ends of the four arms of the cross, and the second conductive terminal (3) is located on the four arms near the central area.

5. The board-to-board female connector according to claim 1, characterized in that, The female end insulating base (1) has a multi-branch structure in the shape of a T. The first conductive terminal (2) is located at the ends of the three arms of the T-shape, and the second conductive terminal (3) is located on the three arms near the central area.

6. The board-to-board female connector according to claim 1, characterized in that, The female end insulating base (1) has a central island (104) in the central region, and the central island (104) is aligned with the central island protrusion (103) on each support arm.

7. A board-to-board connector assembly, characterized in that, The board-to-board male connector (02) and the board-to-board female connector (01) according to any one of claims 1-6 are included; the board-to-board male connector (02) includes: a male insulating base (6) having a multi-branch structure with an outer profile that matches the female insulating base (1), and having a male sidewall (601), a male endwall (602), and a male recess (603). It also includes multiple third conductive terminals (4) and multiple fourth conductive terminals (5). When the board-to-board male connector (02) and the board-to-board female connector (01) are connected, the third conductive terminal (4) is inserted into the first conductive terminal (2), and the fourth conductive terminal (5) is inserted into the second conductive terminal (3).

8. The board-to-board connector assembly according to claim 7, characterized in that, The third conductive terminal (4) is an integrally formed U-shaped structure, which is disposed on the male end wall (602) and the male side wall (601) adjacent to the male end wall (602).

9. The board-to-board connector assembly according to claim 8, characterized in that, The third conductive terminal (4) has a notch (401) on its U-shaped structure. The notch (401) is located inside the corner of the male end sidewall (601) and the male end wall (602).

10. The board-to-board connector assembly according to claim 7, characterized in that, The male end insulating base (6) has a multi-branch structure with a cross-shaped or T-shaped shape.

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