Electric connector and assembly structure of electric connector and circuit board

Abstract

The utility model provides an electric connector and an assembly structure of the electric connector and a circuit board, and belongs to the field of electric connectors. The electric connector and the circuit board are convenient and reliable to assemble, the use performance is stable, and the electric connector has good practicability and generalizability. The electric connector comprises a plastic seat, a terminal and a lock catch, a plurality of terminal holes are formed in the plastic seat, a jack is formed in the middle of the front end of the plastic seat, the plurality of terminals are inserted into the plurality of terminal holes in a one-to-one correspondence manner, and the front end of each terminal is provided with a power connection elastic sheet at the jack; elastic clamping arms capable of generating elastic deformation are arranged on the left side face and the right side face of the plastic base, the front ends of the elastic clamping arms are connected with the plastic base, the free ends of the elastic clamping arms extend backwards, long grooves are formed in the elastic clamping arms, and the front ends of the long grooves are open and the rear ends of the long grooves are closed. And the lock catch is arranged on the plastic seat, a locking part and a limiting block are arranged on the lock catch, the locking part locks the terminal when the lock catch is located at the locking position, and the limiting block extends into a gap between the elastic clamping arm and the plastic seat so as to limit the elastic clamping arm from deforming towards the direction of the plastic seat.

Description

Technical Field

[0001] This application relates to the technical field of electrical connectors, and particularly to an electrical connector and an assembly structure thereof with a circuit board. Background Art

[0002] With the rapid development of the electronics industry, various portable electronic devices have been widely used in daily life. Electrical connectors are required in portable electronic devices, and the function of an electrical connector is to connect a wire to a circuit board. Most of the existing electrical connectors are fixed on the surface of one side of the circuit board, and their upper terminals are spot-welded to the circuits on the circuit board. The main problems of the above existing electrical connectors are as follows: after being assembled with the circuit board, the electrical connector completely protrudes from the surface of the circuit board, and the overall height dimension is relatively large (at least the sum of the thickness dimension of the circuit board and the height dimension of the electrical connector), which is not conducive to the thin design of the product. Utility Model Content

[0003] In view of this, this application provides an electrical connector and an assembly structure thereof with a circuit board. The electrical connector can be assembled with the circuit board conveniently and reliably, and the overall height dimension after assembly is reduced.

[0004] To achieve the above object, this application adopts the following technical solutions:

[0005] In a first aspect, this application provides an electrical connector for connecting with a circuit board, including a plastic base, terminals, and a latch; a plurality of terminal holes are arranged side by side in the plastic base in the left-right direction, and a socket for inserting the insertion part on the circuit board is provided in the middle of the front end of the plastic base and is communicated with the terminal holes. A plurality of terminals are inserted into the plurality of terminal holes one by one, and at the socket, a power connection elastic piece that contacts the gold fingers on the insertion part is provided at the front end of each terminal.

[0006] Elastic clamping arms capable of elastic deformation are provided on the left and right sides of the plastic base. The front end of the elastic clamping arm is connected to the plastic base, the free end of the elastic clamping arm extends backward, and a long groove extending in the front-rear direction is provided on the elastic clamping arm. The long groove is open at the front end and closed at the rear end.

[0007] The latch is installed on the plastic base. A locking part and a limiting block are provided on the latch. When the latch is in the locked position, the locking part locks the terminals, and the limiting block extends into the gap between the elastic clamping arm and the plastic base to limit the elastic clamping arm from deforming towards the plastic base.

[0008] In some embodiments, the latch is connected to the upper part of the plastic base through a pivot connection structure. A first clamping position is provided on the latch, and a second clamping position is provided on the plastic base. When the latch rotates to the locked position, the first clamping position is clamped with the second clamping position.

[0009] In some embodiments, the pivot connection structure includes a shaft portion provided on one of the plastic base and the lock, and a shaft groove provided on the other, and the shaft portion is engaged with the shaft groove.

[0010] In some embodiments, an opening communicating with each terminal hole is provided on the upper surface of the plastic base, the lock has a plate-shaped portion disposed in the left-right direction, the locking portion is integrally formed on the plate-shaped portion and has a boss corresponding to each opening, the limiting block is integrally formed at the end of the plate-shaped portion, when the lock is in the locked position, the limiting block extends into the terminal hole through the opening and abuts against the terminal, and the limiting block protrudes downward and extends between the elastic clamping arm and the corresponding side surface of the plastic base.

[0011] In some embodiments, power connection elastic pieces are provided on both the upper and lower sides of the socket at the front end of the terminal, and the power connection elastic pieces are of an elastic cantilever structure; an arc angle facing away from the socket direction is bent on the power connection elastic piece.

[0012] In a second aspect, the present application provides an electrical connector mounting structure, including a circuit board and the electrical connector described above. An installation groove for mounting the electrical connector is provided on the upper edge of the circuit board. A plugging portion protruding toward the notch direction of the installation groove is provided in the installation groove. Gold fingers are provided at positions corresponding to the power connection elastic pieces on each terminal on the plugging portion. A card slot is provided on the circuit board at the edge of the installation groove. When the electrical connector is installed in the installation groove, the plugging portion is inserted into the socket, the power connection elastic piece contacts the gold finger, the long groove forms a plugging fit with the edge of the installation groove, and the rear end of the elastic clamping arm forms a clamping connection with the card slot.

[0013] The positive effects of the present application are as follows: The structure in the present application is optimized. The electrical connector can be assembled with the circuit board by a plugging method, and the electrical connector is reliably connected to the circuit board by the elastic clamping arm being clamped with the card slot on the circuit board. Further, by providing a limiting block on the lock, when the lock is in the locked position, the limiting block extends between the elastic clamping arm and the corresponding side wall of the plastic base to limit the elastic clamping arm from deforming in the direction of the plastic base, thereby ensuring that the electrical connector and the circuit board maintain a reliable connection; moreover, after connecting the plastic base and the circuit board, the overall height dimension is reduced, which is beneficial to the thin design of the product. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a structural diagram of the electrical connector (lock locked) in the present application;

[0016] Figure 2 The structure diagram of another perspective of the electrical connector shown in Figure 1 Figure

[0017] Figure 3 The structure diagram of the electrical connector (with the latch open) in the present application;

[0018] Figure 4 The Figure 3 exploded view of the electrical connector shown in Figure

[0019] Figure 5 The Figure 1 top view of the electrical connector shown in Figure

[0020] Figure 6 The Figure 5 cross-sectional view taken along the line A-A in Figure

[0021] Figure 7 The schematic structural diagram of the electrical connector in the present application installed on the circuit board;

[0022] Figure 8 The schematic structural diagram of the electrical connector in the present application before being installed on the circuit board.

[0023] Reference numerals shown in the drawings:

[0024] 1 - plastic housing; 11 - terminal hole; 12 - socket; 13 - elastic clamping arm; 14 - long slot; 15 - second clamping position; 16 - opening; 17 - shaft slot;

[0025] 2 - terminal; 21 - electrical contact elastic piece; 22 - wire pressing end;

[0026] 3 - latch; 31 - locking portion; 30 - plate-shaped portion; 32 - limiting block; 33 - first clamping position; 34 - shaft portion;

[0027] 4 - circuit board; 41 - installation groove; 42 - insertion portion; 43 - gold finger; 44 - card slot. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly. In the present application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" 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 application can be understood according to specific circumstances.

[0030] In addition, the technical solutions between 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 scope of protection required by the present application.

[0031] In a first aspect, the structure of the electrical connector in this embodiment is as Figures 1 to 6 shown. The electrical connector is adapted to be assembled and used with a circuit board 4. The electrical connector includes a plastic base 1, terminals 2, and a latch 3; in the Figure 1 XYZ three-dimensional coordinate system shown, the X-axis points in the left-right direction, the Y-axis points in the up-down direction, and the Z-axis points in the front-back direction; four terminal holes 11 are arranged side by side in the plastic base 1 in the left-right direction. An insertion port 12 communicating with the terminal holes 11 is provided in the middle of the front end of the plastic base 1 for the insertion part 42 on the circuit board 4 to be inserted. The four terminals 2 are respectively inserted into the four terminal holes 11. At the insertion port 12, a power connection elastic piece 21 in contact with the gold finger 43 on the insertion part 42 is provided at the front end of each terminal 2. A wire pressing end 22 is provided at the rear end of each terminal 2, and the wire pressing end 22 can be connected to a wire by riveting; in actual operation, the number of the terminal holes 11 and the terminals 2 can be increased or decreased according to needs; the structure of a circuit board 4 adapted to the electrical connector is as Figure 8 shown. It has an insertion part 42. During assembly, the insertion part 42 is inserted into the insertion port 12, and the power connection elastic piece 21 is brought into contact with the gold finger 43 on the insertion part 42 to achieve electrical connection. The electrical connector is connected to the circuit board 4 by an insertion method, which is convenient for assembly and does not require spot welding.

[0032] Further, elastic clamping arms 13 capable of elastic deformation are provided on the left and right side surfaces of the plastic base 1. The front ends of the elastic clamping arms 13 are connected to the plastic base 1, and the elastic clamping arms 13 can be integrally injection-molded with the plastic base 1. The free ends of the elastic clamping arms 13 extend backward. Long grooves 14 extending in the front-rear direction are provided on the elastic clamping arms 13. The long grooves 14 are open at the front end and closed at the rear end. During assembly, the elastic clamping arms 13 are clamped and matched with the card slots 44 of the circuit board 4, thereby ensuring the reliable connection between the electrical connector and the circuit board 4. The lock 3 is installed on the plastic base 1. A locking portion 31 and a limiting block 32 are provided on the lock 3. When the lock 3 is in the locked position, the locking portion 31 locks the terminal 2 to prevent the terminal 2 from loosening. At the same time, when the lock 3 is in the locked position, the limiting block 32 extends into the gap between the elastic clamping arm 13 and the plastic base 1 to limit the deformation of the elastic clamping arm 13 in the direction towards the plastic base 1. In this way, the elastic clamping arm 13 and the card slot 44 can maintain the clamped state, ensuring the reliable connection between the electrical connector and the circuit board 4, and further ensuring the reliability of the electrical connection.

[0033] As Figure 3 and Figure 4 shown, the lock 3 is connected to the upper part of the plastic base 1 through a pivoting connection structure. A first clamping position 33 is provided on the lock 3, and a second clamping position 15 is provided on the plastic base 1. When the lock 3 rotates to the locked position, the first clamping position 33 is engaged with the second clamping position 15, thereby locking the lock 3 to prevent the lock 3 from being easily opened. Exemplarily, one of the first clamping position 33 and the second clamping position 15 is a card slot, and the other is a card table, so as to position the lock 3 by the engagement of the card table and the card slot. The structure is simple and feasible and easy to implement.

[0034] Exemplarily, the pivoting connection structure includes a shaft portion 34 provided on the lock 3 and a shaft groove 17 provided on the plastic base 1. The lock 3 is rotatably connected to the plastic base 1 by the cooperation of the shaft portion 34 and the shaft groove 17. As a deformation scheme, in actual operation, the positions of the shaft portion 34 and the shaft groove 17 can be interchanged.

[0035] Further, as Figures 4 to 6 shown, an opening 16 communicating with each terminal hole 11 is provided on the upper surface of the plastic base 1. The lock 3 has a plate-shaped portion 30 arranged in the left-right direction. The locking portion 31 is integrally formed on the plate-shaped portion 30 and is a convex platform corresponding to each opening 16. The limiting block 32 is integrally formed at the end of the plate-shaped portion 30. When the lock 3 is in the locked position, the limiting block 32 extends into the terminal hole 11 through the opening 16 and abuts against the terminal 2. The limiting block 32 protrudes downward and extends into the gap between the elastic clamping arm 13 and the corresponding side surface of the plastic base 1.

[0036] In some embodiments, power - connecting elastic pieces 21 are provided on both the upper and lower sides of the front end of the terminal 2. The power - connecting elastic pieces 21 are of an elastic cantilever structure, so that the power - connecting part 31 has good elasticity, which can ensure good contact between the power - connecting elastic pieces 21 and the gold fingers 12. An arc angle bending away from the socket 12 is formed on the power - connecting elastic piece 21. After the insertion part 42 is inserted into the socket, the outer arc surface of the arc angle 33 contacts the gold finger 12, which can avoid scratching and damaging the gold finger 43 by the power - connecting elastic piece 21.

[0037] In a second aspect, the present embodiment provides an electrical connector and a circuit - board assembly structure. As shown in Figure 7 and Figure 8 , it includes a circuit board 4 and the electrical connector described in the above - mentioned embodiment. An installation groove 41 for installing the electrical connector is provided at the edge of the circuit board 4. A plug - in part 42 protruding towards the notch of the installation groove 41 is arranged in the installation groove 41. Gold fingers 43 are arranged at positions corresponding to the power - connecting elastic pieces 21 on each terminal 2 on the plug - in part 42. A clamping groove 44 is formed at the edge of the installation groove 41 on the circuit board 4. When the electrical connector is installed in the installation groove 41, the plug - in part 42 is inserted into the socket 12, the power - connecting elastic piece 21 contacts the gold finger 43, the long groove 14 and the edge of the installation groove 41 form a plug - in fit, and the rear end of the elastic clamping arm 13 forms a clamping connection with the clamping groove 44, thereby reliably assembling the electrical connector and the circuit board together.

[0038] The above - mentioned are only the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all of them should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electrical connector for connecting to a circuit board, comprising a plastic seat (1), a terminal (2) and a lock (3); a plurality of terminal holes (11) are arranged side by side in the left-right direction in the plastic seat (1); a socket (12) is arranged at the middle of the front end of the plastic seat (1) and is connected to the terminal hole (11) and is used for inserting a plug-in portion (42) on a circuit board (4); a plurality of terminals (2) are inserted into the plurality of terminal holes (11) one by one, and a power-connecting spring (21) is arranged at the front end of each terminal (2) at the socket (12) and is in contact with a gold finger (43) on the plug-in portion (42); It is characterized in that The left and right sides of the plastic seat (1) are provided with elastic clamping arms (13) capable of elastic deformation, the front end of the elastic clamping arm (13) is connected to the plastic seat (1), the free end of the elastic clamping arm (13) extends backward, and the elastic clamping arm (13) is provided with a long groove (14) extending in the front-to-back direction, the long groove (14) is open at the front end and closed at the rear end; The lock buckle (3) is mounted on the plastic seat (1), and is provided with a locking portion (31) and a limiting block (32). When the lock buckle (3) is in a locked position, the locking portion (31) locks the terminal (2), and the limiting block (32) extends into the gap between the elastic clamping arm (13) and the plastic seat (1) to limit the deformation of the elastic clamping arm (13) toward the plastic seat (1).

2. The electrical connector according to claim 1, characterized in that: The lock buckle (3) is connected to the upper part of the plastic seat (1) via a pivot connection structure, a first latching position (33) is provided on the lock buckle (3), and a second latching position (15) is provided on the plastic seat (1). When the lock buckle (3) is rotated to a locked position, the first latching position (33) is engaged with the second latching position (15).

3. The electrical connector according to claim 2, characterized in that: The pivot connection structure comprises an axis portion (34) provided on one of the plastic seat (1) and the lock buckle (3) and an axis groove (17) provided on the other, wherein the axis portion (34) cooperates with the axis groove (17).

4. The electrical connector according to claim 1, characterized in that: The upper surface of the plastic seat (1) is provided with an opening (16) connected to each terminal hole (11); the lock buckle (3) has a plate-like portion (30) arranged in the left-right direction; the locking portion (31) is integrally formed on the plate-like portion (30) and is a boss corresponding to each opening (16); the limit block (32) is integrally formed at the end of the plate-like portion (30); when the lock buckle (3) is in the locked position, the limit block (32) extends from the opening (16) into the terminal hole (11) and abuts against the terminal (2); the limit block (32) is convexly arranged downward and extends between the elastic clamp arm (13) and the corresponding side surface of the plastic seat (1).

5. The electrical connector according to claim 1, characterized in that: The front end of the terminal (2) is provided with power connection springs (21) on both the upper and lower sides of the socket (12); the power connection springs (21) are elastic cantilever structures; the power connection springs (21) are bent with an arc angle facing away from the socket (12).

6. An electrical connector and circuit board assembly structure, characterized in that: The invention comprises a circuit board (4) and an electrical connector according to any one of claims 1 to 5, wherein the upper edge of the circuit board (4) is provided with a mounting groove (41) for mounting a power supply connector, a plug-in portion (42) protruding toward the groove opening is provided in the mounting groove (41), a gold finger (43) is provided on the plug-in portion (42) at a position corresponding to the power-connecting spring sheet (21) on each terminal (2), and a clamping groove (44) is provided on the circuit board (4) at the groove edge of the mounting groove (41); when the electrical connector is installed in the mounting groove (41), the plug-in portion (42) is inserted into the socket (12), the power-connecting spring sheet (21) contacts the gold finger (43), the long groove (14) forms a plug-in fit with the groove edge of the mounting groove (41), and the rear end of the elastic clamping arm (13) forms a clamping connection with the clamping groove (44).

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