Board-to-board connector convenient to connect with circuit board

Abstract

The utility model provides a board-to-board connector convenient to connect with a circuit board, and belongs to the field of electric connector structure design. The connector comprises a base and a terminal. The upper part of at least one end of the base is provided with an embedding groove for embedding a golden finger part on the circuit board, the base is provided with a plurality of terminal grooves at the bottom of the embedding groove, and terminals are arranged in the terminal grooves; each terminal comprises a contact elastic arm extending into the embedding groove and a welding part extending out of the base; elastic clamping hooks are arranged on the base and located on the two side portions of the embedding groove, and the elastic clamping hooks are suitable for being connected with clamping grooves in the edge portions of the golden finger portion in a clamped mode so as to limit the golden finger portion to retreat from the embedding groove. The board-to-board connector provided by the utility model is optimized in design, is simple in structure, can be quickly and reliably connected with a circuit board, and has good practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connectors, in particular to a board-to-board connector which is convenient to be connected with a circuit board. Background Art

[0002] Electrical connectors are widely used in the transmission of power and signals. For example, they are used as the connection between a circuit and a circuit board or between two circuit boards in a system. In practical applications, in order to make the circuit structure compact, a board-to-board connector is usually used to electrically connect two circuit boards. Most of the existing board-to-board connectors include a male connector end and a female connector end. When in use, the female connector end is installed on one circuit board, and the male connector end is installed on the other circuit board. The electrical connection between the two circuit boards is realized by plugging the male connector end into the female connector end. The main problems existing in this kind of board-to-board connector in actual use are: relatively cumbersome structure, high manufacturing cost, and inconvenient installation and use for users. Content of the Utility Model

[0003] In view of this, the utility model provides a board-to-board connector with a simplified structure and convenient connection with a circuit board.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The utility model provides a board-to-board connector which is convenient to be connected with a circuit board, including a base, terminals and solder tabs;

[0006] At least one upper end of the base is provided with an embedding groove for a finger portion on the circuit board to be embedded. A plurality of terminal grooves are provided at the bottom of the embedding groove on the base, and the terminals are installed in the terminal grooves; each terminal includes a contact spring arm extending into the embedding groove and a welding portion extending out of the base;

[0007] Elastic hooks are provided on both side portions of the embedding groove on the base, and the elastic hooks are adapted to be snap-connected with the bayonet openings on the side edges of the finger portion to limit the finger portion from withdrawing from the embedding groove.

[0008] In some embodiments, the upper part of the embedding groove is open, and a limiting bayonet adapted to be plugged with the end of the finger portion is provided at the inner end of the embedding groove.

[0009] In some embodiments, each terminal has two contact spring arms.

[0010] In some embodiments, a positioning insert is provided at the inner end of the terminal, a fixed socket tightly and matingly plugged with the positioning insert is provided at the inner end of the terminal groove, a hook for snap-connecting with the lower edge of the base is provided at the outer end of the terminal, and the welding portion is provided at the bottom edge of the hook.

[0011] In some embodiments, the embedding grooves are disposed at opposite ends of the base.

[0012] In some embodiments, upwardly protruding limiting side plates are formed on both sides of the embedding groove.

[0013] In some embodiments, welding pieces are fixed on both sides of the base, and the welding pieces include a connecting portion fixedly connected to the base and a mounting portion extending from the bottom of the base.

[0014] In some embodiments, the elastic hook and the base are integrally injection molded.

[0015] The board-to-board connector of the present invention has the positive effects: the board-to-board connector of the present invention is optimized in design, has a reasonable structural arrangement, is convenient to connect with the circuit board, and is conducive to improving production efficiency; specifically, when two circuit boards are connected, the board-to-board connector is fixed on one of the circuit boards, so that the welding part of the terminal is welded to the power connection part on the circuit board to achieve fixation and electrical connection, and the gold finger part of the other circuit board is inserted into the embedding groove, and then the elastic hook is engaged with the groove on the edge of the gold finger part to prevent the gold finger part from being separated from the embedding groove, so that the gold finger part maintains reliable contact with the contact spring arm, thereby realizing the electrical connection between the two circuit boards and ensuring the reliability of the electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the board-to-board connector in the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the terminal in the utility model;

[0019] Figure 3 It is a top view of the board-to-board connector of the utility model when it is installed and used;

[0020] Figure 4 For along Figure 3 Sectional view cut along line AA;

[0021] Figure 5 This is a schematic diagram of the board-to-board connector of the present invention when connected to a circuit board;

[0022] Figure 6This is a three-dimensional view of the board-to-board connector in the present utility model during installation and use.

[0023] The reference numerals shown in the figure are: 1 - base; 10 - embedding groove; 11 - terminal groove; 12 - elastic hook; 13 - limiting bayonet; 14 - fixing slot; 15 - limiting side plate; 2 - terminal; 21 - contact elastic arm; 22 - welding part; 23 - positioning insert; 24 - hook; 3 - circuit board; 30 - gold finger part; 31 - card slot; 4 - solder pad; 41 - installation part. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. In the present utility model, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0027] As Figures 1 to 6 shown, the board-to-board connector in the embodiment of the present utility model includes a base 1, a terminal 2, and a solder pad 4. The terminal 2 is installed on the base 1. The terminal 2 is made of metal, and the circuit is conducted through the terminal 2. The solder pad 4 is used to enhance the reliability of the fixed connection between the board-to-board connector and the circuit board.

[0028] At least one upper end of the base 1 is provided with a fitting groove 10 for the gold finger portion on the circuit board 3 to be inserted. A plurality of terminal grooves 11 are provided at the bottom of the fitting groove 10 on the base 1, and the terminals 2 are installed in the terminal grooves 11. Each terminal 2 includes a contact spring arm 21 extending into the fitting groove 10 and a welding portion 22 extending out of the base 1. When two circuit boards are connected, the board-to-board connector is fixed on one of the circuit boards 3, and the welding portion 22 of the terminal 2 is welded to the power connection part on the circuit board 3 to achieve fixation and electrical connection. At the same time, the solder tab 4 is spot-welded to the corresponding solder point on the circuit board 3 to strengthen the fixation. The gold finger portion 30 of the other circuit board 3 is inserted into the fitting groove 10, so that the gold finger portion 30 contacts the contact spring arm 21, thereby realizing the electrical connection between the two circuit boards 3.

[0029] In this embodiment, elastic hooks 12 are provided on both side portions of the fitting groove 10 on the base 1. The elastic hooks 12 are adapted to be snap-fitted with the card slots 31 on the edge of the circuit board 3 to limit the circuit board 3 from withdrawing from the fitting groove 10. The gold finger portion 30 is inserted into the fitting groove 10, and then the elastic hooks 12 are snap-fitted with the card slots 31 on the edge of the gold finger to prevent the gold finger portion 30 from detaching from the fitting groove 10, so that the gold finger portion 30 and the contact spring arm 21 maintain reliable contact and ensure the reliability of the electrical connection.

[0030] As Figure 4 and Figure 5 As shown, the upper part of the fitting groove 10 is open, and a limit bayonet 13 adapted to be inserted into the end of the gold finger portion 30 is provided at the inner end of the fitting groove 10. When the circuit board 3 is inserted into the fitting groove 10, first make the circuit board 3 inclined relative to the board-to-board connector and insert the end of the gold finger portion 30 into the limit bayonet 13 along the direction indicated by the arrow L1, and then move the circuit board 3 along the arrow L2 direction so that the hook 12 forms a snap connection with the card slot 31 on the edge of the circuit board 3, so that the circuit board 3 is reliably connected to the board-to-board connector. The limit bayonet 13 can play a role in restraining and limiting the end of the gold finger portion 30, thereby enhancing the reliable contact between the circuit board 3 and the terminal 2 and ensuring the reliability of the electrical connection.

[0031] As Figure 4 and Figure 5 As shown, in some embodiments, there are two contact spring arms 21 on each terminal 2. In this way, each terminal 2 can have two contact points with the gold finger portion 30, increasing the contact surface between the terminal 2 and the gold finger portion 30, and further ensuring the reliability of the electrical connection.

[0032] As Figure 2 and Figure 4As shown, a positioning insert 23 is provided at the inner end of the terminal 2, and a fixing slot 14 which is tightly and matingly inserted with the positioning insert 23 is provided at the inner end of the terminal slot 11. A hook 24 for clamping with the lower edge of the base 1 is provided at the outer end of the terminal 2, and the welding portion 22 is provided at the bottom edge of the hook 24. When the terminal 2 is installed in the base 1, the terminal 2 is inserted into the terminal slot 11. The inner end of the terminal 2 is tightly and matingly inserted with the fixing slot 14 through the positioning insert 23, and the outer end of the terminal 2 is clamped with the lower edge of the base 1 through the hook 24 to achieve positioning, thereby enhancing the reliability of the fixation of the terminal 2 in the base 1.

[0033] As Figures 4 to 5 shown, in order to enable the board-to-board connector to adapt to connecting three circuit boards 3, the fitting grooves 10 are provided at opposite ends of the base 1. The board-to-board connector is fixed to one of the circuit boards, and the gold finger portions 30 on the other two circuit boards 3 are respectively inserted into the two fitting grooves 10 and connected to the terminals 2 in the corresponding fitting grooves 10.

[0034] Refer to Figure 1 shown, limiting side plates 15 protruding upward are formed on both sides of the fitting groove 10. In this way, the limiting side plates 15 on both sides can play a role of stopping and limiting the gold finger portion 30 from both sides to prevent the gold finger portion 30 from being skewed, thereby ensuring good contact.

[0035] As Figure 6 shown, in order to strengthen the connection between the connector and the circuit board 3, welding pads 4 are fixed on both sides of the base 1. The welding pad 4 includes a connecting portion fixedly connected to the base 1 and a mounting portion 41 extending from the bottom of the base 1. During installation, the mounting portion 41 is welded to the fixed welding position on the circuit board 3.

[0036] For the processing and manufacturing process and to improve production efficiency, in this embodiment, the limiting hook 12 and the base 1 are integrally injection-molded.

[0037] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A board-to-board connector that is convenient for connection with a circuit board, comprising a base (1), a terminal (2) and a soldering piece (4); The base (1) is provided with an embedding groove (10) at the upper part of at least one end thereof for embedding a gold finger portion (30) on a circuit board (3); the base (1) is provided with a plurality of terminal grooves (11) at the bottom of the embedding groove (10); the terminals (2) are installed in the terminal grooves (11); each terminal (2) comprises a contact spring arm (21) extending into the embedding groove (10) and a welding portion (22) extending out of the base (1); It is characterized in that The base (1) is provided with elastic hooks (12) on both sides of the embedding groove (10), and the elastic hooks (12) are suitable for engaging with the grooves (31) at the edges of the gold finger part (30) to restrict the gold finger part (30) from withdrawing from the embedding groove (10).

2. The board-to-board connector for connecting to a circuit board according to claim 1, characterized in that: The upper portion of the embedding groove (10) is open, and a limit snap-in socket (13) suitable for plugging into the end of the gold finger portion (30) is provided at the inner end of the embedding groove (10).

3. The board-to-board connector for connecting to a circuit board according to claim 1, characterized in that: Each terminal (2) is provided with two contact spring arms (21).

4. The board-to-board connector for easy connection with a circuit board according to claim 1, characterized in that: The inner end of the terminal (2) is provided with a positioning plug (23), the inner end of the terminal slot (11) is provided with a fixing slot (14) tightly fitted with the positioning plug (23), the outer end of the terminal (2) is provided with a hook (24) engaged with the lower edge of the base (1), and the welding portion (22) is provided at the bottom edge of the hook (24).

5. The board-to-board connector for easy connection with a circuit board according to claim 1, characterized in that: The embedding grooves (10) are arranged at opposite ends of the base (1).

6. The board-to-board connector for easy connection with a circuit board according to claim 1, characterized in that: The two sides of the embedding groove (10) are formed with upwardly protruding limiting side plates (15).

7. The board-to-board connector for easy connection with a circuit board according to claim 1, characterized in that: Soldering plates (4) are fixed on both sides of the base (1), and the welding plates (4) comprise a connecting portion fixedly connected to the base (1) and a mounting portion (41) extending from the bottom of the base (1).

8. A board-to-board connector convenient for connection with a circuit board according to any one of claims 1 to 7, characterized in that: The elastic hook (12) and the base (1) are integrally injection molded.

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