Board-to-board female seat connector

Abstract

The utility model discloses a board-to-board female seat connector, which comprises an insulating base, protective shells are arranged at two ends of the insulating base, the insulating base comprises a pair of oppositely arranged long edge structures, a pair of oppositely arranged short edge structures and a middle island structure positioned in the middle of the insulating base, a first pair of slots is reserved between the middle island structure and the long edge structures, and a second pair of slots is reserved between the middle island structure and the long edge structures. The middle island structure comprises two wall plates parallel to the long side structure, a second pair of insertion grooves are formed between the two wall plates, a plurality of conductive terminals are arranged on the middle island structure and the long side structure in a staggered mode, and each conductive terminal is provided with two electric contact surfaces. According to the utility model, the four rows of terminals are arranged in a staggered manner, the rigid terminals and the flexible terminals are combined, the double contacts are elastically abutted against each other, and the PINs are separated by plastic cement, so that the distance between the terminals and the size of the connector are greatly reduced, and the problem of short circuit of the pins due to insulation breakdown of narrow distance is solved; and the problem of poor voltage resistance when the distance between adjacent pins or contact points is too narrow or the terminal is inclined in PIN is effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector technology, and particularly relates to a board-to-board female connector. Background Technology

[0002] Board-to-board connectors are commonly used connection components in electronic products, establishing an electrical connection between two circuit boards. They mainly consist of a female connector and a male connector. The female connector is typically soldered onto one circuit board, while the male connector is soldered onto another. Both the female and male connectors have a corresponding number of conductive terminals for transmitting electronic signals and power. By plugging in the female and male connectors, a communication connection between the two circuit boards can be achieved.

[0003] However, with the trend towards connector miniaturization, existing board-to-board connectors have many shortcomings in order to further reduce their footprint. The traditional dual-row terminal layout makes it difficult to further reduce the terminal spacing, resulting in a larger connector size that cannot meet the compact space requirements of miniaturized devices. Furthermore, the lack of effective isolation between pins leads to frequent insulation breakdowns and pin short circuits when encountering situations such as misaligned pins at narrow pitches. This highlights the problem of poor withstand voltage, affecting the performance and reliability of the entire electronic device. Utility Model Content

[0004] The purpose of this invention is to provide a board-to-board female connector to overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A board-to-board female connector includes an insulating base with protective shells at both ends. The insulating base includes a pair of oppositely arranged long side structures, a pair of oppositely arranged short side structures, and a central island structure located in the middle of the insulating base. A first pair of slots is reserved between the central island structure and the long side structures. The central island structure includes two wall plates parallel to the long side structures, and a second pair of slots is formed between the two wall plates. Multiple conductive terminals are alternately arranged on the central island structure and the long side structures, and each conductive terminal has two electrical contact surfaces.

[0007] Furthermore, the conductive terminal includes a rigid terminal disposed on the two side panels of the central island structure for abutting against the male seat elastic terminal, and an elastic terminal disposed on the two long side structures for abutting against the male seat rigid terminal.

[0008] Furthermore, the rigid terminal includes a first contact surface located on the inner side of the wall panel and a second contact surface located on the outer side of the wall panel; the elastic terminal includes a first elastic arm located on the inner side of the long side structure and a second elastic arm extending toward the wall panel and located on the same side as the second contact surface; the second elastic arm and the second contact surface are arranged alternately.

[0009] Furthermore, the rigid terminal also includes a first solder foot that extends horizontally outward from the bottom of the first contact surface through the base plate of the insulating base.

[0010] Furthermore, the elastic terminal also includes a first fixed arm embedded in the long side structure; and a second welding foot formed by extending horizontally outward from the bottom of the fixed arm through the base plate of the insulating base, wherein the first elastic arm is formed by extending outward from the top of the fixed arm.

[0011] Furthermore, the electrical contact surface of the first elastic arm is provided with elastic protrusions for improving the connection holding force.

[0012] Furthermore, the bottom of the second pair of slots has through holes for easy cutting of the strip.

[0013] Furthermore, the protective shell includes an end protection portion covering the upper part of the insulating base, a cap portion covering the end of the central island structure, and a connecting and fixing portion integrally connecting the end protection portion and the cap portion.

[0014] Furthermore, the connecting fixing part has elastic contact parts extending vertically upward on both sides for electrical contact with the male connector.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] The board-to-board female connector provided by this utility model adopts a four-row staggered terminal layout, a composite design of rigid and flexible terminals, double-contact elastic abutment, and plastic barriers between each pin, which greatly reduces the terminal spacing and connector volume. It also solves the problem of short circuit due to insulation breakdown of narrow-pitch pins, effectively avoiding the problem of poor withstand voltage when the distance between adjacent pins or contact points is too narrow or the pins are crooked. The process can achieve one-time molding, ensuring insulation while achieving stable electrical connection.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structure of a board-to-board female connector provided in an embodiment of this utility model;

[0020] Figure 2 An exploded view of a board-to-board female connector provided in an embodiment of this utility model;

[0021] Figure 3 A board-to-board female connector provided in this embodiment of the utility model Figure 1 A sectional view along line AA based on the given data;

[0022] Figure 4 A board-to-board female connector provided in this embodiment of the utility model Figure 1 A sectional view along line BB based on the given data;

[0023] Figure 5 A board-to-board female connector provided in this embodiment of the utility model Figure 1 A sectional view along line CC based on the given data;

[0024] Figure 6 A top view of a board-to-board female connector provided in an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the conductive terminals in a board-to-board female connector provided for an embodiment of the present utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1-Insulating base, 101-Island structure, 102-Long side structure, 103-Short side structure, 104-First pair of slots, 105-Second pair of slots, 106-Wall panel, 107-First terminal fixing slot, 108-Second terminal fixing slot, 109-Terminal clearance slot, 2-Rigid terminal, 201-First contact surface, 202-Second contact surface, 203-First solder foot, 3-Elastic terminal, 301-Fixed support arm, 302-First elastic arm, 303-Second elastic arm, 304-Second solder foot, 305-Elastic protrusion, 4-Protective shell, 401-Top wall protection part, 402-Inner wall protection part, 403-Outer wall protection part, 404-Protective shell solder foot, 405-Cap part, 406-Connecting fixing part, 407-Elastic contact part. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] like Figure 1 As shown, this embodiment of the utility model provides a board-to-board female connector, including an insulating base 1, conductive terminals, and a female connector protective shell. Specifically:

[0030] like Figure 2 As shown, in this embodiment, the insulating base 1 is the basic part of the female connector. Its main body adopts a rectangular box structure design. As the mounting base for other components, it provides physical support and plays a role in electrical insulation, isolating each conductive terminal and preventing mutual interference between them. The insulating base 1 includes a pair of oppositely arranged long side structures 102, a pair of oppositely arranged short side structures 103, and a central island structure 101 located in the middle of the insulating base 1 and protruding upward. A first pair of slots 104 are reserved between the central island structure 101 and the long side structures 102 for the long side side walls to be inserted. The central island structure 101 includes two wall plates 106 parallel to the long side structures 102. A second pair of slots 105 for the partition to be inserted is formed between the two wall plates 106. The bottom of the second pair of slots 105 has a through hole to facilitate the cutting of the terminal strip by the lower cutting blade.

[0031] like Figures 2 to 6 As shown, the conductive terminals include rigid terminals 2 and elastic terminals 3. Multiple rigid terminals 2 and elastic terminals 3 are arranged alternately, and each rigid terminal 2 and each elastic terminal 3 has two electrical contact surfaces, enabling double-point contact between the conductive terminals of the female connector and the conductive terminals of the male connector. Specifically, the rigid terminals 2 are equidistantly spaced and embedded in the first terminal fixing grooves 107 on the two wall plates 106 of the island structure 101. Each rigid terminal 2 includes a first contact surface 201 located on the inner side of the wall plate 106, a first solder leg 203 extending horizontally outward from the bottom of the first contact surface 201, and a second contact surface 202 extending from the top of the first contact surface 201 on the outer side of the wall plate 106. The second contact surface 202 is parallel to the first contact surface 201, and its bottom is embedded in the base plate of the insulating base 1. The first solder leg 203 passes through the base plate of the insulating base 1 and protrudes outside the insulating base 1, used to connect to the second circuit board to achieve electrical signal transmission.

[0032] The elastic terminals 3 are also made of elastic metal sheets, and multiple terminals are embedded side by side at equal intervals on the two long side structures 102, with the same number as the rigid terminals 2. The elastic terminals 3 include a fixed support arm 301, a first elastic arm 302, a second elastic arm 303, and a second solder foot 304. The fixed support arm 301 has barbs on both sides and is fixed in the second terminal fixing groove 108 on the long side structure 102. The second solder foot 304 is formed by extending horizontally outward from the bottom of the fixed support arm 301 through the bottom plate of the insulating base 1, and is used to solder to the second circuit board to realize the transmission of electrical signals. The first elastic arm 302 extends outward from the top of the fixed support arm 301 and is located on the inner side of the long side structure 102. Furthermore, the electrical contact surface of the first elastic arm 302 is also provided with elastic protrusions 305 to improve the connection holding force, so as to ensure a more stable connection between the male connector and the female connector and prevent loosening. The second elastic arm 303 is disposed opposite to the first elastic arm 302, and is formed by extending the bottom of the first elastic arm 302 toward the wall plate 106 and then bending upward. It is located on the same side of the second contact surface 202 and can float in the terminal clearance groove 109 of the wall plate 106. The second elastic arm 303 and the second contact surface 202 are arranged alternately. Through this four-row double-contact structure, the board-to-board connector can still achieve a stable and reliable electrical connection function with plastic barriers between pins even with extremely small spacing. At the same time, it also solves the problem of short circuits caused by insulation breakdown of narrow-pitch pins, and effectively avoids the problem of poor withstand voltage due to excessively narrow distance between adjacent pins or contact points or misaligned pins.

[0033] like Figure 2As shown, the protective shell 4 is an integral component formed by bending a metal plate, including an end protection section and a central island protection section. The end protection section covers the upper part of the insulating base 1 to strengthen the structural strength of the insulating base and prevent damage to the connector from external impact. The end protection section includes a top wall protection section 401 covering the top surface of the short side structure 103 and partially covering the top surface of the long side structure 102, and an inner wall protection section 402 covering the inner side of the short side structure 103 and partially covering the inner side of the long side structure 102; a welding foot of the protective shell 4 extends horizontally outward through the insulating base 1 from the top wall protection section 401, partially bent downward. The central island protection section includes a cap section 405 and a connecting fixing section 406. The cap section 405 completely covers the end of the central island structure 101 to protect the end of the central island structure 101. The connecting fixing part 406 is located on the inner bottom surface of the insulating base 1, connecting the end protection part and the cap part 405 into one unit. This further simplifies the assembly process and effectively improves the structural strength of the protective shell 4, while increasing the current-carrying area of ​​the connector. Vertically upward-extending elastic contact parts 407 are also provided on both sides of the connecting fixing part 406 for electrical contact with the male connector.

[0034] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A board-to-board female housing connector characterized by, The application relates to an insulating base (1) provided with protective shells (4) at both ends, the insulating base (1) comprising a pair of oppositely arranged long side structures (102), a pair of oppositely arranged short side structures (103) and a middle island structure (101) located at the middle of the insulating base (1), a first pair of insertion grooves (104) being reserved between the middle island structure (101) and the long side structures (102), the middle island structure (101) comprising two wall plates (106) parallel to the long side structures (102), a second pair of insertion grooves (105) being formed between the two wall plates (106), and a plurality of conductive terminals being arranged alternately on the middle island structure (101) and the long side structures (102), each conductive terminal having two electrically contacting surfaces.

2. The board-to-board receptacle connector according to claim 1, characterized by: The conductive terminals comprise rigid terminals (2) arranged on the two wall plates (106) of the middle island structure (101) and used for abutting against elastic terminals (3) of male sockets, and the elastic terminals (3) arranged on the two long side structures (102) and used for abutting against the rigid terminals (2) of the male sockets.

3. The board-to-board receptacle connector according to claim 2, characterized by: The rigid terminals (2) comprise first contacting surfaces (201) located on the inner sides of the wall plates (106) and second contacting surfaces (202) located on the outer sides of the wall plates (106); the elastic terminals (3) comprise first elastic arms (302) located on the inner sides of the long side structures (102) and second elastic arms (303) located on the same side of the second contacting surfaces (202) and extending towards the wall plates (106); and the second elastic arms (303) are arranged alternately with the second contacting surfaces (202).

4. The board-to-board receptacle connector according to claim 3, characterized by: The rigid terminals (2) further comprise first soldering legs (203) horizontally extending outwards from the bottom of the first contacting surfaces (201) and penetrating through the bottom plate of the insulating base (1).

5. The board-to-board receptacle connector according to claim 3, characterized by: The elastic terminals (3) further comprise first fixed branch arms (301) embedded in the long side structures (102); second soldering legs (304) horizontally extending outwards from the bottom of the fixed branch arms (301) and penetrating through the bottom plate of the insulating base (1), and the first elastic arms (302) extend outwards from the top of the fixed branch arms (301).

6. The board-to-board receptacle connector according to claim 3, characterized by: Elastic protrusions (305) for improving the connection retention force are arranged on the electrically contacting surfaces of the first elastic arms (302).

7. The board-to-board receptacle connector according to claim 1, characterized by: The bottom of the second pair of insertion grooves (105) is provided with through holes for facilitating the cutting of material belts.

8. The board-to-board receptacle connector according to claim 1, characterized by: The protective shells (4) comprise end protective portions covering the end portions of the insulating base (1), cap portions (405) covering the end portions of the middle island structure (101), and connecting fixed portions (406) integrally connecting the end protective portions and the cap portions (405).

9. The board-to-board receptacle connector according to claim 8, characterized by: The connecting fixed portions (406) are provided with elastic contacting portions (407) vertically extending upwards and used for electrically contacting male socket connectors.

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