Electric connector

Abstract

The utility model discloses an electric connector, which comprises a PCB (printed circuit board), a connecting terminal group and at least one pair of pressing plates, the connecting terminal group comprises a base and a terminal arranged on the base, one end of the terminal is inserted into the PCB and is electrically connected with the PCB, and the other end of the terminal is used for connecting a cable; the pair of pressing plates is symmetrically arranged on the two sides of the base and fixedly connected with the PCB, and the pressing plates are used for pressing the base on the PCB. According to the utility model, the pressing plates symmetrically arranged on the two sides of the base are used for pressing the base on the PCB so as to prevent the connection terminal group from displacing along the plugging direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector, especially relates to an electric connector. BACKGROUND

[0002] With the development of consumer electronics, more and more companies pay more attention to the production test of products, so that the test equipment needs to test the mainboard chip of the product.

[0003] The chip test electric connector needs to be used when testing, however, the existing electric connector still has some problems, in the test, after multiple tests, repeated use of the tester will cause repeated pulling of the cable in the electric connector, so that the terminal connected with the cable in the electric connector is loose, at the same time, the vibration of the equipment itself can also cause the terminal to be loose, resulting in unstable connection. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides an electric connector, wherein the terminal structure is stable and will not be loose.

[0005] The utility model discloses the following technical scheme:

[0006] An electric connector, comprising:

[0007] A PCB board;

[0008] A connecting terminal group, comprising a base and a terminal arranged on the base, one end of the terminal is inserted into the PCB board and electrically connected with the PCB board, and the other end is used for connecting a cable;

[0009] At least one pair of pressing plates, the pair of pressing plates are symmetrically arranged on both sides of the base and fixedly connected with the PCB board, and the base is fixed between the PCB board and the pressing plate along the plug-in direction.

[0010] Further, the electric connector further comprises at least one pair of bottom plates fixed on the PCB board, the pair of bottom plates are symmetrically arranged on both sides of the base and fixedly connected with the PCB board, at least one clamping groove is formed in the pair of bottom plates, the base is provided with a protruding block matched with the clamping groove, and the base (22) is clamped between the pair of bottom plates 32 along the horizontal direction.

[0011] Further, the upper surface of the protruding block is not lower than the top surface of the pair of bottom plates, and the pair of pressing plates abut against the upper surface of the protruding block.

[0012] Further, the pair of bottom plates and the pair of pressing plates are one-to-one corresponding, the bottom plate is located directly below the pressing plate, and the pair of bottom plates are fixedly connected with the pair of pressing plates.

[0013] Further, a first screw hole is formed on the pair of bottom plates, and a screw is matched with the first screw hole through the PCB.

[0014] Further, a second screw hole is formed on the pair of bottom plates, and a fixing screw is matched with the second screw hole through the pair of pressing plates.

[0015] Further, the at least one clamping groove comprises a plurality of clamping grooves arranged in sequence along the axial direction of the bottom plate, and the plurality of protrusions correspond to the plurality of clamping grooves one by one.

[0016] Further, the base comprises a plurality of injection molding parts arranged in sequence along the axial direction of the bottom plate, and the protrusions are formed on both sides of the injection molding parts.

[0017] Further, the plurality of injection molding parts are fixed with at least one terminal.

[0018] Further, the terminal is a fish-eye terminal, the PCB is provided with a press-fit hole corresponding to the terminal, and the fish-eye part of the terminal is inserted into the press-fit hole to be connected with the PCB.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] 1. The terminal and the injection molding part are fixed and then press-fitted with the PCB, so that it is not necessary to press-fit the terminals one by one, and the production efficiency is improved.

[0021] 2. The first fixing device is arranged on the PCB, and the first fixing device is matched with the injection molding part through the clamping groove, so that the transverse displacement of the injection molding part is limited, and the electrical connector will not be transversely loose during repeated plugging and unplugging.

[0022] 3. The second fixing device is arranged on the first fixing device, and the second fixing device is abutted with the injection molding part, so that the vertical displacement of the injection molding part is limited, and the electrical connector will not be vertically loose during repeated plugging and unplugging.

[0023] 4. The hole is arranged on the terminal, and the fluid of the injection molding part passes through the hole and solidifies during injection molding, so that the terminal is further fixed, and the terminal is prevented from falling off. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a structural schematic view of an electrical connector according to an embodiment of the utility model;

[0025] Figure 2 FIG. 2 is a partial enlarged view of the electrical connector according to the embodiment of the utility model;

[0026] Figure 3 FIG. 3 is a partial structural schematic view of the electrical connector according to the embodiment of the utility model;

[0027] Figure 4 Part of the enlarged view of the electric connector of one embodiment of the utility model;

[0028] Figure 5 Part of the sectional view of the injection molding piece and terminal assembly of the electric connector of one embodiment of the utility model;

[0029] Figure 6 The terminal structure schematic view of the electric connector of one embodiment of the utility model.

[0030] Label explanation: 1, PCB board;10, press-fit hole;2, connecting terminal group;20, injection molding piece;21, terminal;22, base;210, fixed part;211, fixed hole;212, fisheye part;213, connecting part;214, transition part;3, fixing mechanism;31, pressing plate;32, bottom plate;300, clamping groove;301, protruding block;302, first screw hole;303, upper surface;304, second screw hole;305, fixed screw;5, cable;306, top surface. Specific implementation

[0031] The utility model technical scheme is further non-restrictively and specifically described below in combination with the preferred embodiments and the drawings. In the description of the utility model, it is understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0032] As Figure 1 Indicated, the electric connector of one embodiment of the utility model, including PCB board 1, connecting terminal group 2 and fixing mechanism 3, one end of connecting terminal group 2 is fixedly connected with PCB board 1 through fixing mechanism 3, and the other end is used to connect cable 5. Connecting terminal group 2 is fixed on PCB board 1 through fixing mechanism 3, so that the electric connector does not cause connecting terminal group 2 to be loose in the repeated plugging process.

[0033] Specifically, refer to Figures 2 to 4 The connecting terminal group 2 includes a base 22 and a terminal 21 arranged on the base 22. One end of the terminal 21 is inserted into the PCB board 1 and electrically connected to the PCB board 1, and the other end is used to connect the cable 5.

[0034] The fixing mechanism 3 includes at least one pair of pressure plates 31. The pressure plates 31 are symmetrically positioned on either side of the base 22 and are fixedly connected to the PCB 1. The base 22 is fixed between the PCB 1 and the pressure plates 31 along the insertion and removal direction. Pressing the base 22 against the PCB 1 via the pressure plates 31 prevents displacement of the terminal block 2 along the insertion and removal direction, which is perpendicular to the PCB 1.

[0035] Optionally, the fixing mechanism 3 further includes at least one pair of bottom plates 32 fixed to the PCB 1. The bottom plates 32 are symmetrically arranged on either side of the base 22 and fixedly connected to the PCB 1. At least one slot 300 is formed on the bottom plates 32. The base 22 is provided with a protrusion 301 that mates with the slot 300. The base 22 is horizontally engaged between the bottom plates 32 to prevent the base 22 from rocking left and right. The protrusion 301, engaged in the slot 300, prevents the base 22 from rocking forward and backward, thereby preventing the connection terminal assembly 2 from shifting horizontally. The horizontal direction is parallel to the PCB 1.

[0036] Optionally, the at least one slot 300 includes a plurality of slots 300 arranged in sequence along the axial direction of the base plate 32, and a plurality of protrusions 301 are provided, with the plurality of protrusions 301 corresponding one-to-one to the plurality of slots 300. Providing a plurality of slots 300 and protrusions 301 makes the fixation of the base 22 more stable, and prevents loosening due to damage to a single protrusion 301 or slot 300.

[0037] In addition, the upper surface 303 of the protrusion 301 is not lower than the top surface 306 of the pair of bottom plates 32 , and the pair of pressing plates 31 abut against the upper surface 303 of the protrusion 301 to prevent the base 22 from sliding up and down in the slot 300 .

[0038] In this embodiment, only one pair of bottom plates 32 and one pair of pressure plates 31 are provided, both positioned on the longer side of the base 22. Furthermore, the pair of bottom plates 32 and the pair of pressure plates 31 are arranged in a one-to-one correspondence, with the bottom plates 32 positioned directly below the pressure plates 31 and fixedly connected to the pair of pressure plates 31. This arrangement makes the fixing mechanism 3 compact and does not occupy additional space. Of course, in other optional embodiments, multiple pairs of bottom plates 32 or multiple pairs of pressure plates 31 may be provided, and positioned on the shorter side of the base 22.

[0039] Optionally, the bottom plate 32 is formed with a first screw hole 302, and a screw is passed through the first screw hole 302 to connect the PCB 1 and the bottom plate 32. The screw is passed through the first screw hole 302 from the side of the PCB 1 away from the terminal group 2, so that there is no extra protruding structure on the bottom plate 32 to hinder other components.

[0040] Optionally, the bottom plate 32 is formed with a second screw hole 304, and a fixing screw 305 is passed through the second screw hole 304 to connect the pressing plate 31 and the bottom plate 32. Such an arrangement makes the fixing mechanism 3 compact in structure and does not occupy extra space.

[0041] Specifically, the base 22 includes a plurality of injection molded parts 20 arranged in the axial direction of the bottom plate 32, and the injection molded parts 20 are formed with protrusions 301 on both sides. Each injection molded part 20 is fixed with at least one terminal 21. The terminal 21 is a fish-eye terminal, and the PCB 1 is formed with a plurality of press-fit holes 10 corresponding to the terminals 21. One end of the terminal 21 is provided with a fish-eye portion 212 connected to the press-fit hole 10, and the other end is connected to a cable 5. The fish-eye portion 212 can be inserted into the press-fit hole 10 and electrically connected to the PCB 1. After the plurality of terminals 21 and the injection molded parts 20 are fixed, they are uniformly press-fitted with the PCB 1, so that there is no need to press-fit the terminals 21 one by one, greatly improving the production efficiency.

[0042] The injection molded part 20 wraps the fish-eye terminal 21 by injection molding.

[0043] Further, referring to Figure 5 and Figure 6 , the terminal 21 is formed with a fixing hole 211, and the injection molded part 20 is integrally formed and at least partially filled in the fixing hole 211. The part of the injection molded part 20 filled in the fixing hole 211 after injection molding can abut against the injection molded part 20 to more firmly fix the terminal 21 in the injection molded part 20 and prevent it from falling off.

[0044] Optionally, in order to facilitate processing, the fixing hole 211 is square in the embodiment. After injection molding, the fixing strip in the injection molded part 20 passes through the fixing hole 211 and abuts against the terminal 21, thereby fixing the terminal 21.

[0045] In other optional embodiments, the fixing hole 211 can also be other hollow shapes through which the injection fluid can flow.

[0046] Optionally, the fish-eye terminal 21 is formed with a fixing portion 210, the injection molded part 20 wraps the fixing portion 210 by injection molding, and the fixing hole 211 is arranged on the fixing portion 210. The fish-eye terminal 21 further includes a connecting portion 213 connected to the fixing portion 210, and the connecting portion 213 is connected to the cable 5.

[0047] Optionally, the terminal 21 is integrally formed, and the injection molding piece 20 is wrapped around at least part of the connecting portion 213 by injection molding. Wherein the first width L1 of the fixing portion 210 is greater than the second width L2 of the connecting portion 213, and the transition portion 214 is formed between the fixing portion 210 and the connecting portion 213, and the injection molding piece 20 wraps the transition portion 214 by injection molding. So that when the tail of the terminal 21, that is, the fish eye portion 212, is stressed during the press-fitting process, the transition portion 214 can also abut the injection molding piece 20 to bear part of the stress to prevent the terminal 21 from falling off the injection molding piece 20, thereby causing the electrical connector to be unusable.

[0048] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An electrical connector, characterized in that: include: PCB board (1); A connecting terminal group (2) comprises a base (22) and a terminal (21) arranged on the base (22), one end of the terminal (21) being inserted into the PCB board (1) and electrically connected to the PCB board (1), and the other end being used for connecting to a cable (5); At least one pair of pressure plates (31), the pair of pressure plates (31) being symmetrically arranged on both sides of the base (22) and fixedly connected to the PCB board (1), and the base (22) being fixed between the PCB board (1) and the pressure plates (31) along the plugging direction.

2. The electrical connector according to claim 1, wherein: The electrical connector further comprises at least one pair of base plates (32) fixed on the PCB board (1), the pair of base plates (32) being symmetrically arranged on both sides of the base (22) and fixedly connected to the PCB board (1), at least one card slot (300) being formed on the pair of base plates (32), the base (22) being provided with a protrusion (301) matched with the card slot (300), and the base (22) being clamped between the pair of base plates (32) in a horizontal direction.

3. The electrical connector according to claim 2, wherein: The upper surface (303) of the protrusion (301) is not lower than the top surface (306) of the pair of bottom plates (32), and the pair of pressure plates (31) abut against the upper surface (303) of the protrusion (301).

4. The electrical connector according to claim 2, wherein: The pair of bottom plates (32) and the pair of pressing plates (31) are arranged in a one-to-one correspondence, and the bottom plates (32) are located directly below the pressing plates (31), and the pair of bottom plates (32) are fixedly connected to the pair of pressing plates (31).

5. The electrical connector according to claim 4, wherein: A first screw hole (302) is formed on the pair of bottom plates (32), and a screw passes through the PCB board (1) and is matched with the first screw hole (302).

6. The electrical connector according to claim 4, wherein: Second screw holes (304) are formed on the pair of bottom plates (32), and fixing screws (305) pass through the pair of pressure plates (31) and are matched with the second screw holes (304).

7. The electrical connector according to claim 2, wherein: The at least one card slot (300) comprises a plurality of card slots (300) sequentially arranged along the axial direction of the bottom plate (32); a plurality of protrusions (301) are provided, and the plurality of protrusions (301) correspond one-to-one to the plurality of card slots (300).

8. The electrical connector according to claim 7, wherein: The base (22) comprises a plurality of injection molded parts (20) neatly arranged along the axial direction of the bottom plate (32), and the protrusions (301) are formed on both sides of the injection molded parts (20).

9. The electrical connector according to claim 8, wherein: At least one terminal (21) is fixed on each of the plurality of injection molded parts (20).

10. The electrical connector according to claim 9, wherein: The terminal (21) is a fisheye terminal, and a press-fit hole (10) corresponding to the terminal (21) is formed on the PCB board (1), and the fisheye portion (212) of the terminal (21) can be inserted into the press-fit hole (10) and connected to the PCB board (1).

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