Electric connector

Abstract

The utility model discloses an electric connector, and the electric connector comprises at least one terminal which is a fisheye terminal. The PCB is provided with a press-fit hole, one end of the terminal is provided with a fisheye part matched with the press-fit hole, and the other end of the terminal is connected with a cable; the injection molding part wraps the fisheye terminal in an injection molding manner; wherein a fixing hole is formed in the terminal, the injection molding piece is integrally formed, and at least part of the structure of the injection molding piece is filled in the fixing hole. According to the utility model, the terminal is provided with the fixing hole, and the fluid of an injection molding part passes through the fixing hole and is solidified during injection molding, so that the fluid is further fixed with the terminal, and the terminal is prevented from falling off.

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 increasing development of consumer electronic products, more and more companies pay more attention to product production testing, which requires testing equipment to test the product's motherboard chips.

[0003] Chip test electrical connectors are required during testing. However, existing electrical connectors still have some problems. Patent CN 116581568A "A solderless press-fit terminal for PCB board and its working method" provides a solderless press-fit terminal for PCB board, hereinafter referred to as fisheye terminal. When installing this fisheye terminal, in order to improve installation efficiency and stability during use, multiple fisheye terminals and injection molded parts are generally first injection-molded to form a terminal assembly, and then the assembly is uniformly pressed into the PCB board. However, during the press-fitting process, the PCB board will generate a reaction force on the tail of the fisheye terminal. The force on the tail of the fisheye terminal may cause the fisheye terminal to fall off from the injection molded part, making the connector unusable. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an electrical connector, in which the terminals are firmly fixed to the injection molded parts and will not fall off.

[0005] The utility model is achieved through the following technical solutions:

[0006] An electrical connector, comprising:

[0007] at least one terminal, wherein the terminal is a fisheye terminal;

[0008] A PCB board, wherein a press-fit hole is formed on the PCB board, one end of the terminal is provided with a fisheye portion that mates with the press-fit hole, and the other end is connected to a cable;

[0009] An injection molded part, wherein the injection molded part wraps the fisheye terminal by injection molding;

[0010] A fixing hole is formed on the terminal, the injection molded part is integrally formed and at least a portion of the structure is filled in the fixing hole.

[0011] Furthermore, the fixing hole is square.

[0012] Furthermore, the fisheye terminal is formed with a fixing portion, the injection molded part wraps the fixing portion by injection molding, and the fixing hole is provided on the fixing portion.

[0013] Furthermore, the fisheye terminal further includes a connecting portion connected to the fixing portion, and the connecting portion is connected to the cable.

[0014] Furthermore, the terminal is integrally formed.

[0015] Furthermore, the injection molded part wraps at least a portion of the connecting portion by injection molding.

[0016] Furthermore, the first width of the fixing portion is greater than the second width of the connecting portion.

[0017] Furthermore, an arc-shaped transition portion is formed between the fixing portion and the connecting portion, and the injection molded part wraps the transition portion by injection molding.

[0018] Furthermore, the electrical connector also includes a pair of base plates, which are symmetrically arranged on both sides of the injection molded part and fixedly connected to the PCB board. A card slot is formed on the pair of base plates, and protrusions that match the card slot are protruded on both sides of the injection molded part.

[0019] Furthermore, the electrical connector further includes a pair of pressing plates, which are symmetrically arranged on both sides of the injection molded part and fixedly connected to the PCB board, and are used to press the injection molded part onto the PCB board.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. Fix the fisheye terminal to the injection molded part and then press fit it to the PCB board, eliminating the need to press fit the fisheye terminals one by one, thereby improving production efficiency.

[0022] 2. By providing a first fixing device on the PCB board, and the first fixing device cooperates with the injection molded part through a slot, the lateral displacement of the injection molded part is limited, so that the electrical connector will not loosen laterally when repeatedly plugged and unplugged.

[0023] 3. By arranging a second fixing device on the first fixing device, and the second fixing device abutting against the injection molded part, the vertical displacement of the injection molded part is limited, so that the electrical connector will not loosen vertically when repeatedly plugged and unplugged.

[0024] 4. By opening a hole on the fisheye terminal, the fluid of the injection molded part passes through the hole and solidifies during injection molding, further fixing it to the fisheye terminal, preventing the fisheye terminal from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of an electrical connector according to an embodiment of the present invention;

[0026] Figure 2 This is a partially enlarged view of an electrical connector according to an embodiment of the present invention;

[0027] Figure 3This is a partial structural diagram of an electrical connector according to an embodiment of the present invention;

[0028] Figure 4 This is a partially enlarged view of an electrical connector according to an embodiment of the present invention;

[0029] Figure 5 This is a partial cross-sectional view of an assembly of an injection molded part and a fisheye terminal of an electrical connector according to one embodiment of the present utility model;

[0030] Figure 6 The figure is a schematic diagram of a fisheye terminal structure of an electrical connector according to an embodiment of the present invention.

[0031] Explanation of reference numbers: 1. PCB board; 10. Press-fit hole; 2. Connecting terminal group; 20. Injection molded part; 21. Terminal; 22. Base; 210. Fixing part; 211. Fixing hole; 212. Fisheye part; 213. Connecting part; 214. Transition part; 3. Fixing mechanism; 31. Pressing plate; 32. Bottom plate; 300. Slot; 301. Bump; 302. First screw hole; 303. Upper surface; 304. Second screw hole; 305. Fixing screw; 5. Cable; 306. Top surface. DETAILED DESCRIPTION

[0032] The following is a further non-restrictive detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. In addition, the terms "first" and "second" are used for descriptive purposes only 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" and "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, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model.

[0033] like Figure 1As shown, an electrical connector according to one embodiment of the present invention includes a PCB 1, a connecting terminal set 2, and a fixing mechanism 3. One end of the connecting terminal set 2 is fixedly connected to the PCB 1 via the fixing mechanism 3, and the other end is used to connect to a cable 5. The fixing mechanism 3 secures the connecting terminal set 2 to the PCB 1, ensuring that the connecting terminal set 2 does not loosen during repeated insertion and removal of the electrical connector during use.

[0034] 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.

[0035] The fixing mechanism 3 includes at least one pair of pressing plates 31. The pair of pressing plates 31 are symmetrically arranged on both sides of the base 22 and fixedly connected to the PCB board 1, and are used to press the base 22 on the PCB board 1 to prevent the connection terminal group 2 from moving along the plugging direction.

[0036] 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, and the base 22 is provided with a protrusion 301 that mates with the slot 300 to prevent horizontal displacement of the connection terminal assembly 2.

[0037] 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.

[0038] 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 .

[0039] 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.

[0040] Optionally, a first screw hole 302 is formed on the bottom plate 32, and a screw is passed through the PCB 1 and engages with the first screw hole 302 to secure the bottom plate 32 to the PCB 1. The screw passes through the side of the PCB 1 away from the connection terminal group 2 and engages with the first screw hole 302, so that no additional protruding structure on the bottom plate 32 obstructs other components.

[0041] Optionally, a second screw hole 304 is formed on the bottom plate 32, and a fixing screw 305 passes through the pressing plate 31 and engages with the second screw hole 304 to fix the bottom plate 32 to the pressing plate 31. This arrangement makes the fixing mechanism 3 compact and does not take up extra space.

[0042] Specifically, the base 22 includes a plurality of injection molded parts 20 neatly arranged along the axial direction of the bottom plate 32, and a bump 301 is formed on both sides of the injection molded parts 20. At least one terminal 21 is fixed to each injection molded part 20. Among them, the terminal 21 is a fisheye terminal, and a plurality of press-fit holes 10 corresponding to the terminals 21 are formed on the PCB board 1. One end of the terminal 21 is provided with a fisheye portion 212 that is matched with the press-fit hole 10, and the other end is connected to the cable 5. The fisheye portion 212 can be inserted into the press-fit hole 10 and electrically connected to the PCB board 1. After fixing multiple terminals 21 to the injection molded parts 20 and then press-fitting them to the PCB board 1, there is no need to press-fit the terminals 21 one by one, which greatly improves production efficiency.

[0043] The molded part 20 wraps the fisheye terminal 21 by injection molding.

[0044] Further, refer to Figure 5 and Figure 6 A fixing hole 211 is formed on the terminal 21, and the injection molded part 20 is integrally formed with at least a portion of the structure filling the fixing hole 211. This allows the portion of the injection molded part 20 filled in the fixing hole 211 to abut against the injection molded part 20 after injection molding, thereby more securely fixing the terminal 21 in the injection molded part 20 and preventing it from falling off.

[0045] Optionally, in order to facilitate processing, the fixing hole 211 in this embodiment is square. After the injection molding is completed, a fixing bar formed in the injection molded part 20 and passing through the fixing hole 211 abuts against the terminal 21, thereby fixing the terminal 21.

[0046] In other optional embodiments, the fixing hole 211 may also be other hollow shapes through which the injection molding fluid can flow.

[0047] Optionally, the fisheye terminal 21 is formed with a fixing portion 210, the injection molded part 20 is wrapped around the fixing portion 210 by injection molding, and the fixing hole 211 is provided on the fixing portion 210. The fisheye 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.

[0048] Optionally, the terminal 21 is integrally formed, and the molded part 20 is molded around at least a portion of the connecting portion 213. The first width L1 of the fixed portion 210 is greater than the second width L2 of the connecting portion 213, and an arc-shaped transition portion 214 is formed between the fixed portion 210 and the connecting portion 213. The molded part 20 is molded around the transition portion 214. This allows the transition portion 214 to be molded around the terminal 21 when the tail portion of the terminal 21, i.e., the fisheye portion 212, is subjected to force during the press-fit process. The transition portion 214 abuts against the molded part 20 to bear some of the force, preventing the terminal 21 from falling off the molded part 20, thereby rendering the electrical connector unusable.

[0049] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An electrical connector, characterized in that: include: at least one terminal (21), wherein the terminal (21) is a fisheye terminal; A PCB board (1), wherein a press-fit hole (10) is formed on the PCB board (1), one end of the terminal (21) is provided with a fisheye portion (212) that is matched with the press-fit hole (10), and the other end is connected to a cable (5); An injection molded part (20), wherein the injection molded part (20) wraps the fisheye terminal (21) by injection molding; A fixing hole (211) is formed on the terminal (21), and the injection molded part (20) is integrally formed and at least a portion of the structure is filled in the fixing hole (211).

2. The electrical connector according to claim 1, wherein: The fixing hole (211) is square.

3. The electrical connector according to claim 1, wherein: The fisheye 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 provided on the fixing portion (210).

4. The electrical connector according to claim 3, wherein: The fisheye 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).

5. The electrical connector according to claim 1, wherein: The terminal (21) is integrally formed.

6. The electrical connector according to claim 4, wherein: The injection molded part (20) wraps at least a portion of the connecting portion (213) by injection molding.

7. The electrical connector according to claim 6, wherein: The first width (L1) of the fixing portion (210) is greater than the second width (L2) of the connecting portion (213).

8. The electrical connector according to claim 7, wherein: An arc-shaped transition portion (214) is formed between the fixing portion (210) and the connecting portion (213), and the injection molded part (20) wraps the transition portion (214) by injection molding.

9. The electrical connector according to claim 1, wherein: The electrical connector further comprises a pair of base plates (32), the pair of base plates (32) being symmetrically arranged on both sides of the injection molded part (20) and fixedly connected to the PCB board (1), a card slot (300) being formed on the pair of base plates (32), and a protrusion (301) mating with the card slot (300) being convexly provided on both sides of the injection molded part (20).

10. The electrical connector according to claim 1, wherein: The electrical connector further comprises a pair of pressing plates (31), which are symmetrically arranged on both sides of the injection molded part (20) and fixedly connected to the PCB board (1) for pressing the injection molded part (20) onto the PCB board (1).

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