Electric connector

Abstract

The utility model discloses an electric connector which comprises a male end, a female end, a first flexible circuit board and a second flexible circuit board. The male end is provided with an inserting part, and the female end is provided with an inserting groove matched with the inserting part. A plurality of first terminals are arranged on one side of the male end at intervals, the male end is connected with the first flexible circuit board through the first terminals, a plurality of second terminals are arranged on one side of the female end at intervals, and the female end is connected with the second flexible circuit board through the second terminals; the outer wall of the male end is provided with a plating layer used for shielding signals. According to the utility model, the structural design of the electric connector is improved, the plating layer is arranged at the periphery of the male end to play a role in shielding external interference signals, so that the transmission performance of the connector is improved, and due to the fact that a shell such as a shielding shell is not needed, the occupied size and volume of the connector can be reduced through the structural layout mode.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to an electric connector. Background Art

[0002] With the development of the current electronic and electrical industry and the continuous advancement of scientific and technological information, the scope of use of electrical connectors has gradually increased, especially plug-and-play electrical connectors, which are more widely used. They are widely used in the connection of flexible printed circuit boards (FPC boards). Their function is to act as a bridge between blocked or isolated circuits within the circuit, taking on the task of current or signal transmission, and forming a board-to-board connection.

[0003] However, the existing electrical connectors still have the technical problem of occupying a large volume when in use. At present, the electrical connector is not only large in the pin row direction, but also occupies a lot of space on the FPC board. At the same time, in order to eliminate the interference of external electromagnetic signals on data transmission, in the field of connectors, more and more scenarios require the use of connectors with shielding shells to eliminate the interference of external electromagnetic waves. However, after installing the shielding shell on the outside of the electrical connector, it will cause it to occupy a larger space, affecting the overall structural compactness and integration of the electronic equipment. Utility Model Content

[0004] The main purpose of the utility model is to provide an electrical connector, aiming to design an electrical connector with small size and small volume, so as to avoid the problem that the existing electrical connector occupies a large volume.

[0005] To achieve the above-mentioned purpose, the utility model proposes an electrical connector, comprising a male end, a female end, a first flexible circuit board and a second flexible circuit board; the male end is provided with a plug-in portion, and the female end is provided with a plug-in groove matching the plug-in portion; a plurality of first terminals are arranged at intervals on one side of the male end, and the male end is connected to the first flexible circuit board through the first terminals, and a plurality of second terminals are arranged at intervals on one side of the female end, and the female end is connected to the second flexible circuit board through the second terminals; a coating for shielding signals is arranged on the outer wall of the male end, and a first avoidance groove for accommodating the female end is provided on the male end, and the plug-in portion is arranged in the first avoidance groove.

[0006] Optionally, a mounting bevel is provided on the female end, and a shape of the first avoidance groove is adapted to the female end.

[0007] Optionally, two rows of first terminals are disposed on both sides of the male end, and the number of the second terminals matches the number of the first terminals.

[0008] Optionally, a mounting groove for accommodating the first terminal is provided on the male end.

[0009] Optionally, a second avoidance groove for avoiding the second terminal is formed on the male end, and the number and arrangement of the second avoidance grooves match the second terminal.

[0010] Optionally, a first avoidance hole for the first terminal to pass through and a second avoidance hole for the second terminal to pass through are formed on the plating layer.

[0011] Optionally, the coating is an LDS coating, and the thickness of the coating is 5 μm to 50 μm.

[0012] Optionally, the material of the plating layer includes but is not limited to copper and nickel.

[0013] Optionally, a ground pad is provided on one side of the plated layer, and the ground pad is connected to a ground wire of the first flexible circuit board.

[0014] The beneficial effect of the utility model is that the design of the mutually adapted plug-in part and the plug-in slot ensures that the male end and the female end can be accurately matched and embedded together, making the overall size of the connector smaller and making plugging and unplugging more convenient and stable.

[0015] The plating layer arranged on the periphery of the male end can shield external interference signals, and there is no need to set up additional shells such as shielding shells, thereby avoiding increasing the size and volume of the connector and saving space.

[0016] When in use, the female end is completely inserted into the avoidance groove of the male end. The plating layer arranged on the periphery of the male end can shield external interference signals, reduce the size of the connector, make its structure more compact, and further optimize space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of the combined state of the male end and the female end of an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the male end and the female end in an exploded state according to an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the coating layer in one embodiment of the utility model;

[0021] Figure 4This is a schematic diagram of the exploded structure of an electrical connector according to an embodiment of the utility model at one angle;

[0022] Figure 5 It is a schematic diagram of the exploded structure of the electrical connector according to one embodiment of the utility model from another angle.

[0023] Description of Figure Numbers:

[0024] Male end 1; plug-in portion 11; first terminal 12; first avoidance groove 13; mounting groove 14; second avoidance groove 15;

[0025] Female end 2; plug-in slot 21; second terminal 22; mounting slope 23;

[0026] First flexible circuit board 3; first solder pad 31; second flexible circuit board 4; second solder pad 41;

[0027] Plating layer 5; first avoidance hole 51; second avoidance hole 52; grounding pad 53.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] See also Figures 1 to 5 The utility model proposes an electrical connector, comprising a male end 1, a female end 2, a first flexible circuit board 3 and a second flexible circuit board 4; the male end 1 is provided with a plug-in portion 11, and the female end 2 is provided with a plug-in slot 21 that cooperates with the plug-in portion 11; a plurality of first terminals 12 are arranged at intervals on one side of the male end 1, and the male end 1 is connected to the first flexible circuit board 3 through the first terminals 12; a plurality of second terminals 22 are arranged at intervals on one side of the female end 2, and the female end 2 is connected to the second flexible circuit board 4 through the second terminals 22; a plating layer 5 for shielding signals is arranged on the outer wall of the male end 1.

[0033] Specifically, the male end 1 is used as a plug, and the female end 2 is used as a socket. The plug-in portion 11 on the male end 1 is a protruding plug. The plug-in portion 11 is inserted into the plug-in slot 21 to complete the connection between the circuits. The first flexible circuit board 3 is provided with a plurality of first pads 31, the number and arrangement of the first pads 31 match the first terminal 12, and the second flexible circuit board 4 is provided with a plurality of second pads 41, the number and arrangement of the second pads 41 match the second terminal 22. The first pads 31 and the first terminal 12 are connected by hot pressing welding or hot air welding, and the second pads 41 and the second terminal 22 can also be connected by hot pressing welding or hot air welding. In hot pressing welding, the wires of the terminal and the pads on the flexible circuit board are fused together by heating and pressure, thereby achieving electrical connection. In hot air welding, the electrical connection can also be achieved by heating the wires of the pads on the flexible circuit board so that they are hot-melted and fused together with the terminals. Such a welding method can ensure stable and reliable connection, and has good mechanical strength and electrical performance.

[0034] The male end 1 and the female end 2 are connected by the mutually adapted plug-in portion 11 and the plug-in slot 21, and the overall size of the connector is smaller, which also makes plugging and unplugging more convenient and stable. At the same time, the male end 1 and the female end 2 are connected to the first flexible circuit board 3 and the second flexible circuit board 4 through the first terminal 12 and the second terminal 22 respectively.

[0035] In addition, in order to shield signal interference, the outer wall of the male end 1 is also covered with a coating 5. Since no housing such as a shielding shell is required, this connection method can reduce the size and volume of the connector.

[0036] See also Figures 1 to 5 In this embodiment, a first avoidance groove 13 for accommodating the female end 2 is provided on the male end 1 , and the plug-in portion 11 is disposed in the first avoidance groove 13 .

[0037] The plug-in portion 11 is located at the bottom of the first avoidance groove 13, and the plug-in portion 11 is extended along the height direction of the first avoidance groove 13. When in use, the female end 2 is completely inserted into the avoidance groove of the male end 1, and the outer contour of the female end 2 is connected with the outer contour of the male end 1, and the outside looks like a whole, which improves the overall aesthetics, makes the structure more compact, and reduces the space occupancy rate. In addition, the plating layer 5 on the outer periphery of the male end 1 can shield external interference signals, thereby reducing the size of the connector, making its structure more compact, and further optimizing the space utilization rate.

[0038] See also Figure 1 to Figure 2 In this embodiment, a mounting bevel 23 is provided on the female end 2, and the shape of the first avoidance groove 13 is adapted to the female end 2. Specifically, the female end 2 is a prism, and the female end 2 has four mounting bevels 23, and the area of ​​the side of the female end 2 that is butted against the male end 1 is smaller than the side of the female end 2 that is away from the male end 1. The mounting bevel 23 refers to a bevel or an inclined angle provided on the female end 2, which is used to guide the male end 1 to be inserted into the female end 2. When the male end 1 is inserted into the female end 2, it will enter the first avoidance groove 13 under the guidance of the mounting bevel 23, so that the plug-in portion 11 on the male end 1 can smoothly enter the plug-in groove 21. The first avoidance groove 13 refers to a groove portion on the male end 1, which matches the shape of the socket of the female end 2, so that the male end 1 can be correctly aligned and inserted into the female end 2, ensuring the reliability and stability of the plug-in.

[0039] See also Figures 1 to 5 In this embodiment, two rows of first terminals 12 are arranged on both sides of the male terminal 1, and the number of the second terminals 22 matches the number of the first terminals 12. Specifically, there are ten first terminals 12, that is, five first terminals 12 are arranged in each row, and correspondingly, there are two rows of ten second terminals 22.

[0040] See also Figures 1 to 5 In this embodiment, the male end 1 is provided with a mounting groove 14 for accommodating the first terminal 12. The mounting groove 14 is located on one side of the male end 1 and is used to fix and protect the first terminal 12, while also saving the occupied volume of the male end 1 to a certain extent.

[0041] See also Figures 1 to 5 In this embodiment, the male end 1 is provided with a second avoidance groove 15 for avoiding the second terminal 22, and the number and arrangement of the second avoidance grooves 15 match the second terminal 22. The second avoidance grooves 15 refer to a plurality of grooves provided on the male end 1 for accommodating the second terminal 22. By providing the second avoidance grooves 15 on the male end 1, it can be ensured that the second terminal 22 is correctly installed and fixed on one side of the male end 1. The number and arrangement of the second avoidance grooves 15 match the shape and position of the second terminal 22 to achieve correct alignment and plugging and unplugging.

[0042] See also Figures 1 to 3 In this embodiment, the plating layer 5 is provided with a first avoidance hole 51 for the first terminal 12 to pass through and a second avoidance hole 52 for the second terminal 22 to pass through. Specifically, the first avoidance hole 51 and the second avoidance hole 52 are respectively matched with the arrangement of the mounting groove 14 and the second avoidance groove 15, so that the avoidance hole and the avoidance groove are integrated in the same area, further saving space.

[0043] In this embodiment, the coating layer 5 is an LDS coating layer, and the thickness of the coating layer 5 is 5 μm to 50 μm.

[0044] LDS coating refers to the use of laser direct forming technology to form a shielding layer with a thickness of 5 to 50 μm on the insulator of the male terminal 1 by laser engraving and plating. LDS (Laser Direct Structuring) is an advanced surface treatment technology that uses lasers to directly structure the male terminal 1. This process is usually divided into the following steps: Laser laser engraving: Use a laser to accurately structure the plastic surface to form the required shielding coating 5 pattern. Chemical activation: Use special chemicals to activate the laser engraved area so that it reacts with the metal plating solution. Electroplating: Metal (here copper and other conductive metals) is plated on the activated area to form a thin and uniform shielding layer.

[0045] Specifically, the material of the plating layer 5 includes but is not limited to copper and nickel. Copper and nickel are both good electromagnetic shielding materials, which can effectively block the propagation and interference of electromagnetic waves. By plating copper and nickel layers on the male terminal 1, a continuous metal shielding layer can be formed to reduce the influence of external electromagnetic signals on internal devices and improve the anti-interference performance of electronic equipment.

[0046] The thickness of the coating 5 may be 8-16 μm for copper and 1-5 μm for nickel. Multiple coatings 5 ​​of different materials and thicknesses may be formed by controlling the concentration of the plating solution and the time and current density of the electroplating.

[0047] See also Figures 4 to 5 In this embodiment, a grounding pad 53 is provided on one side of the plating layer 5, and the grounding pad 53 is connected to the ground line of the first flexible circuit board 3. The grounding pad 53 is formed by bending and extending one side of the plating layer 5 along the contact surface with the first flexible circuit board 3. The number of grounding pads 53 can be multiple, and two symmetrically arranged grounding pads 53 are used in the specific implementation. The grounding pad 53 can be a metal sheet made of copper or other conductive materials, which is used to provide a reliable grounding point to connect the plating layer 5 with the ground line of the first flexible circuit board 3. Through this grounding connection, the interference signal or electrostatic discharge generated on the plating layer 5 can be effectively guided to the ground line, thereby protecting the device from interference or damage.

[0048] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electrical connector, characterized in that: It includes a male end, a female end, a first flexible circuit board and a second flexible circuit board; The male end is provided with a plug-in portion, and the female end is provided with a plug-in slot matched with the plug-in portion; A plurality of first terminals are arranged at intervals on one side of the male end, and the male end is connected to the first flexible circuit board through the first terminals; a plurality of second terminals are arranged at intervals on one side of the female end, and the female end is connected to the second flexible circuit board through the second terminals; A plating layer for shielding signals is arranged on the outer wall of the male end, and a first avoidance groove for accommodating the female end is opened on the male end, and the plug-in portion is arranged in the first avoidance groove.

2. The electrical connector according to claim 1, characterized in that: The female end is provided with a mounting bevel, and the shape of the first avoidance groove is adapted to the female end.

3. The electrical connector according to claim 1, characterized in that: Two rows of first terminals are arranged separately on both sides of the male end, and the number of the second terminals matches the number of the first terminals.

4. The electrical connector according to claim 1, characterized in that: The male end is provided with a mounting groove for accommodating the first terminal.

5. The electrical connector according to claim 4, characterized in that: The male end is provided with a second avoidance groove for avoiding the second terminal, and the number and arrangement of the second avoidance grooves match the second terminal.

6. The electrical connector according to claim 1, characterized in that: The plating layer is provided with a first avoidance hole for the first terminal to pass through and a second avoidance hole for the second terminal to pass through.

7. The electrical connector according to claim 1, characterized in that: The coating is an LDS coating, and the thickness of the coating is 5 μm to 50 μm.

8. The electrical connector according to claim 1, characterized in that: The material of the plating layer includes but is not limited to copper and nickel.

9. The electrical connector according to claim 1, characterized in that: A ground pad is provided on one side of the plating layer, and the ground pad is connected to the ground wire of the first flexible circuit board.

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