Signal terminal module and connector

Abstract

The invention relates to the field of parts suitable for high-frequency connectors, in particular to a signal terminal module and a connector. An existing connector is improved, the new signal terminal module is adopted, the signal terminal module is provided with the anti-static material between the differential signal terminal and the shielding sheet and / or between the differential signal terminal and the grounding signal terminal, static electricity generated on the differential signal terminal can be released to the shielding sheet or the grounding signal terminal, and therefore the signal terminal module is prevented from being damaged. Therefore, static accumulation on the differential signal terminals is avoided, and the influence on signal transmission is avoided.

Description

Technical Field

[0001] The present invention relates to the field of components suitable for high-frequency connectors, and in particular to a signal terminal module and a connector. Background Art

[0002] With the rapid development of communication technology, the application of high-speed connectors is becoming more and more widespread. For example, the high-speed connector disclosed in the Chinese invention patent application with application publication number CN115051210A includes a plurality of stacked terminal modules, each terminal module includes a plate-shaped one-time injection-molded insulator and a differential signal terminal and a ground signal terminal injected in the one-time injection-molded insulator. One end of these signal terminals extends from one side of the one-time injection-molded insulator to form a plug-in end, and the other end extends from the other side of the one-time injection-molded insulator and has a fisheye terminal for plugging with a printed circuit board. After multiple terminal modules are assembled to form a connector, all the fisheye terminals of the connector are inserted into the corresponding jacks by applying pressure to the other side (molded surface) opposite to the side where the fisheye terminals are located, and the connector is pressed onto the printed circuit board as a whole. During the press-fitting process, the fisheye terminal and the jack of the printed circuit board are force-fitted, resulting in greater insertion friction, which causes static electricity to be generated on the signal terminal. The static electricity generated on the ground signal terminal can be released through the shielding sheet, but the static electricity generated on the differential signal terminal cannot be released. The discharge of this part of static electricity will affect signal transmission or cause a signal short circuit. Summary of the invention

[0003] The purpose of the present invention is to provide a signal terminal module to solve the problem that the static electricity generated by the friction between the fisheye terminal and the printed circuit board cannot be released in the existing terminal module, resulting in discharge phenomenon affecting signal transmission or causing signal short circuit. At the same time, the purpose of the present invention is also to provide a connector to solve the problem that static electricity accumulates on the differential signal terminals of the existing connector, and discharges to the outside to affect signal transmission or cause signal short circuit.

[0004] The signal terminal module of the present invention includes a plate-shaped injection-molded insulator and differential signal terminals and ground signal terminals arranged in the injection-molded insulator. A shielding sheet is provided on the injection-molded insulator, and antistatic materials are provided between the differential signal terminal and the shielding sheet and / or between the differential signal terminal and the ground signal terminal to release static electricity on the differential signal terminal.

[0005] Furthermore, the injection-molded insulator is made of antistatic material.

[0006] Furthermore, the injection-molded insulator includes a primary injection-molded insulator, a reserved notch is provided on the primary injection-molded insulator, a secondary injection-molded insulator is injection-molded in the reserved notch, the secondary injection-molded insulator is an integral structure and is connected to all differential signal terminals, the shielding sheet is installed on the injection-molded insulator and is in contact with the secondary injection-molded insulator, and the secondary injection-molded insulator is an antistatic material.

[0007] Further, the overmolded insulator has a portion extending to the molded surface.

[0008] Furthermore, the injection-molded insulator includes a primary injection-molded insulator, a reserved notch is provided on the primary injection-molded insulator, a secondary injection-molded insulator is injection-molded in the reserved notch, the secondary injection-molded insulator is a discrete split structure, and each secondary injection-molded insulator is respectively connected to different parts of all differential signal terminals so that all differential signal terminals are connected to the secondary injection-molded insulator, and the secondary injection-molded insulator is an antistatic material.

[0009] Furthermore, a heat rivet post is provided on the side of the injection molded insulator, a rivet hole is provided on the shielding sheet, the shielding sheet is connected to the injection molded insulator through the heat rivet post passing through the rivet hole, and some heat rivet posts are provided on the secondary injection molded insulator.

[0010] Furthermore, the injection-molded insulator includes a primary injection-molded insulator, the differential signal terminal and the ground signal terminal are both arranged in the primary injection-molded insulator, and the shielding sheet is connected to the primary injection-molded insulator through a secondary injection-molded insulator injected on one side of the primary injection-molded insulator, the secondary injection-molded insulator is an antistatic material, and the secondary injection-molded insulator is connected to each differential signal terminal.

[0011] Further, the overmolded insulator has a portion extending to the molded surface.

[0012] The present invention provides a signal terminal module in a pioneering manner. By arranging antistatic materials between the differential signal terminal and the shielding sheet and / or between the differential signal terminal and the grounding signal terminal, the static electricity generated on the differential signal terminal can be released to the shielding sheet or the grounding signal terminal, thereby avoiding the accumulation of static electricity on the differential signal terminal and avoiding the influence on signal transmission.

[0013] The connector of the present invention includes a signal terminal module, which includes a plate-shaped injection-molded insulator and a differential signal terminal and a ground signal terminal arranged in the injection-molded insulator. A shielding sheet is provided on the injection-molded insulator, and anti-static material is provided between the differential signal terminal and the shielding sheet and / or between the differential signal terminal and the ground signal terminal to release static electricity on the differential signal terminal.

[0014] Furthermore, the injection-molded insulator is made of antistatic material.

[0015] Furthermore, the injection-molded insulator includes a primary injection-molded insulator, a reserved notch is provided on the primary injection-molded insulator, a secondary injection-molded insulator is injection-molded in the reserved notch, the secondary injection-molded insulator is an integral structure and is connected to all differential signal terminals, the shielding sheet is installed on the injection-molded insulator and is in contact with the secondary injection-molded insulator, and the secondary injection-molded insulator is an antistatic material.

[0016] Further, the overmolded insulator has a portion extending to the molded surface.

[0017] Furthermore, the injection-molded insulator includes a primary injection-molded insulator, a reserved notch is provided on the primary injection-molded insulator, a secondary injection-molded insulator is injection-molded in the reserved notch, the secondary injection-molded insulator is a discrete split structure, and each secondary injection-molded insulator is respectively connected to different parts of all differential signal terminals so that all differential signal terminals are connected to the secondary injection-molded insulator, and the secondary injection-molded insulator is an antistatic material.

[0018] Furthermore, a heat rivet post is provided on the side of the injection molded insulator, a rivet hole is provided on the shielding sheet, the shielding sheet is connected to the injection molded insulator through the heat rivet post passing through the rivet hole, and some heat rivet posts are provided on the secondary injection molded insulator.

[0019] Furthermore, the injection-molded insulator includes a primary injection-molded insulator, the differential signal terminal and the ground signal terminal are both arranged in the primary injection-molded insulator, and the shielding sheet is connected to the primary injection-molded insulator through a secondary injection-molded insulator injected on one side of the primary injection-molded insulator, the secondary injection-molded insulator is an antistatic material, and the secondary injection-molded insulator is connected to each differential signal terminal.

[0020] Further, the overmolded insulator has a portion extending to the molded surface.

[0021] The present invention improves the existing connector and adopts a new signal terminal module. The signal terminal module sets anti-static material between the differential signal terminal and the shielding plate and / or between the differential signal terminal and the grounding signal terminal. The static electricity generated on the differential signal terminal can be released to the shielding plate or the grounding signal terminal, thereby avoiding static electricity accumulation on the differential signal terminal and avoiding the influence on signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a first embodiment of a connector of the present invention; Figure 2 It is a cross-sectional view of the signal terminal module in the first embodiment of the connector of the present invention cut to the secondary injection molded insulator; Figure 3 for Figure 2 The back side structure diagram of the signal terminal module is shown; Figure 4 It is a structural schematic diagram of the injection-molded insulator of the signal terminal module in the second embodiment of the connector of the present invention; Figure 5 It is a schematic structural diagram of a signal terminal module in the second embodiment of the connector of the present invention.

[0023] In the figure: 1. Connector; 2. Signal terminal module; 20. Primary injection molded insulator; 21. Secondary injection molded insulator; 22. Molded surface; 30. Differential signal terminal; 31. Ground signal terminal; 32. Fisheye terminal; 4. Notch position; 5. Thermal rivet column; 6. Shielding sheet. DETAILED DESCRIPTION

[0024] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0025] The connector of the present invention connects the differential signal terminals in its signal terminal module to a grounding component such as a grounding signal terminal or a shielding sheet through antistatic materials, thereby being able to release static electricity generated on the differential signal terminals to the grounding component, thereby preventing the static electricity on the differential signal terminals from affecting signal transmission.

[0026] Based on the above inventive concept, the present invention provides the following different embodiments for illustration.

[0027] In a more basic embodiment, Figure 1 As shown, the connector 1 includes a plurality of stacked signal terminal modules 2, and the signal terminal modules 2 mainly include a plate-shaped injection molded insulator, a signal terminal in the injection molded insulator, and a shielding sheet 6 arranged on the injection molded insulator. The injection molded insulator is made of antistatic plastic (or static dissipative material) by injection as a whole, and all signal terminals (including differential signal terminals 30 and ground signal terminals 31) are wrapped inside to fix these signal terminals. One end of these signal terminals extends from one side of the injection molded insulator to form a plug-in end, and the other end extends from the other side of the injection molded insulator and has a fisheye terminal 32 for plugging with a printed circuit board. The shielding sheet 6 is fixed on the injection molded insulator in a conventional manner and contacts the injection molded insulator, so that the differential signal terminal 30 wrapped in the injection molded insulator contacts the injection molded insulator. When static electricity is generated on the differential signal terminal 30, the static electricity can be released to the shielding sheet 6 and the ground signal terminal 31 through the injection molded insulator, and will not accumulate on the differential signal terminal 30 to cause external discharge, and will not affect the signal transmission quality.

[0028] In one embodiment, if Figure 2-3As shown, the injection molded insulator includes a plate-shaped primary injection molded insulator 20, and the differential signal terminal 30 and the ground signal terminal 31 are both arranged in the primary injection molded insulator 20 to fix these signal terminals. The shielding sheet 6 is connected to the primary injection molded insulator 20 through a secondary injection molded insulator 21 injected on one side of the primary injection molded insulator 20. In particular, the primary injection molded insulator 20 is provided with hollow structures along the extension path of the differential signal terminal 30 and along the extension path of the ground signal terminal 31. After the secondary injection molded insulator 21 is formed, it has a portion filled in the hollow structure and in contact with the differential signal terminal 30 and the ground signal terminal 31. The secondary injection molded insulator 21 is an antistatic material. In this way, the differential signal terminal 30 is connected to the ground signal terminal 31 and the shielding sheet 6 through the secondary injection molded insulator 21 (here "connected" means that the differential signal terminal 30 can release static electricity to the shielding sheet 6 with the help of the secondary injection molded insulator 21), thereby realizing the release of static electricity on the differential signal terminal 30.

[0029] In another embodiment, if Figure 4-5 As shown, the signal terminal module 2 includes a plate-shaped primary injection molded insulator 20, which wraps all signal terminals (including differential signal terminals 30 and ground signal terminals 31) to fix these signal terminals. In particular, a reserved gap is provided on the primary injection molded insulator 20, that is, there is no gap that completely wraps the differential signal terminal 30 on the extension path of the differential signal terminal 30. The reserved gap is formed by secondary injection molding to form a secondary injection molded insulator, which contacts the differential signal terminal 30 passing through the reserved gap. The secondary injection molded insulator is an antistatic material. The shielding sheet 6 is installed on the side of the injection molded insulator and contacts the secondary injection molded insulator. In this way, when static electricity is generated on the differential signal terminal 30, the static electricity can be released to the shielding sheet 6 through the secondary injection molded insulator, and will not accumulate on the differential signal terminal 30 to cause external discharge, and will not affect the signal transmission quality.

[0030] In order to ensure that all differential signal terminals 30 in the signal terminal module 2 will not have static electricity accumulation, all differential signal terminals 30 need to be connected to the shielding plate 6 with the help of a secondary injection molded insulator ("connected" here means that the differential signal terminals 30 can release static electricity to the shielding plate 6 with the help of the secondary injection molded insulator). In one embodiment, different secondary injection molded insulators that are discretely distributed are in contact with different parts of all differential signal terminals 30, and the differential signal terminals 30 contacted by all secondary injection molded insulators are sufficient to include all differential signal terminals 30. Or in one embodiment, an integral secondary injection molded insulator is in contact with all differential signal terminals 30, and all differential signal terminals 30 are connected to the shielding plate 6 ("connected" here means that the differential signal terminals 30 can release static electricity to the shielding plate 6 with the help of the secondary injection molded insulator). Figure 4 As shown, there are three secondary injection molded insulators, which are respectively located at three notch positions 4, wherein two notch positions 4 respectively expose half and the other half of all differential signal terminals 30, and another notch position 4 exposes all differential signal terminals 30. Figure 4 The distribution of the secondary injection molded insulator in the above two cases is also shown.

[0031] A snap-fit ​​structure can be used between the shielding sheet 6 and the injection molded insulator, for example, a hook is provided on the shielding sheet 6, and a slot is provided on the injection molded insulator, and the two are fixedly connected by the hook and slot, and the shielding sheet 6 is attached to the side of the injection molded insulator and connected to the secondary injection molded insulator. Figure 4-5 In the embodiment shown, a heat rivet stud 5 is formed on the injection molded insulator, and a rivet hole is provided on the shielding sheet 6. The two are connected to the injection molded insulator through the heat rivet stud 5 passing through the rivet hole. The heat rivet stud 5 is formed on the secondary insulator, and the shielding sheet 6 is connected to the secondary injection molded insulator through the rivet position. The shielding sheet 6 is connected by riveting, which ensures the reliability of the fixed installation of the shielding sheet 6 on the injection molded insulator, and at the same time ensures the reliability of the differential signal terminal 30 releasing static electricity to the shielding sheet 6 through the secondary injection molded insulator.

[0032] On the basis of the above-mentioned embodiments, in a more preferred embodiment, the secondary injection molded insulator 21 has a portion extending to the molding surface 22, so that in the process of pressing the connector 1 as a whole onto the printed circuit board through the metal molding head, the static electricity generated on the differential signal terminal 30 can be directly released through the secondary injection molded insulator 21 and the metal molding head, thereby ensuring the reliability of static electricity release.

[0033] The antistatic materials in the above-mentioned various embodiments are all existing materials. The present invention does not involve improvement of the antistatic material itself, so it will not be described in detail.

[0034] The embodiment of the signal terminal module of the present invention has the same specific structure as the structure of the signal terminal module in the connector introduced above, and will not be further described herein.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A signal terminal module, comprising a plate-shaped injection-molded insulator and a differential signal terminal (30) and a ground signal terminal (31) arranged in the injection-molded insulator, wherein a shielding sheet (6) is arranged on the injection-molded insulator, wherein: Antistatic material is provided between the differential signal terminal (30) and the shielding sheet (6) and / or between the differential signal terminal (30) and the grounding signal terminal (31) to discharge static electricity on the differential signal terminal (30).

2. The signal terminal module according to claim 1, characterized in that: The injection molded insulator is made of antistatic material.

3. The signal terminal module according to claim 1, characterized in that: The injection molded insulator comprises a primary injection molded insulator (20), a reserved notch is provided on the primary injection molded insulator (20), a secondary injection molded insulator is injection molded in the reserved notch, the secondary injection molded insulator is an integral structure and is connected to all differential signal terminals (30), a shielding sheet (6) is mounted on the injection molded insulator and is in contact with the secondary injection molded insulator, and the secondary injection molded insulator is an antistatic material.

4. The signal terminal module according to claim 3, characterized in that: The overmolded insulator has a portion extending to the molded surface (22).

5. The signal terminal module according to claim 1, characterized in that: The injection molded insulator comprises a primary injection molded insulator (20). A reserved notch is provided on the primary injection molded insulator (20), and a secondary injection molded insulator is injection molded in the reserved notch. The secondary injection molded insulator is a discrete split structure, and each secondary injection molded insulator is respectively connected to different parts of all differential signal terminals (30) so that all differential signal terminals (30) are connected to the secondary injection molded insulator. The secondary injection molded insulator is an antistatic material.

6. The signal terminal module according to any one of claims 3 to 5, characterized in that: A heat rivet post (5) is provided on the side of the injection-molded insulator, a riveting hole is provided on the shielding sheet (6), the shielding sheet (6) is connected to the injection-molded insulator via the heat rivet post (5) passing through the riveting hole, and part of the heat rivet post (5) is provided on the secondary injection-molded insulator (21).

7. The signal terminal module according to claim 1, characterized in that: The injection molded insulator comprises a primary injection molded insulator (20), the differential signal terminals (30) and the ground signal terminals (31) are both arranged in the primary injection molded insulator (20), the shielding sheet (6) is connected to the primary injection molded insulator (20) through a secondary injection molded insulator (21) injection molded on one side of the primary injection molded insulator (20), the secondary injection molded insulator (21) is an antistatic material, and the secondary injection molded insulator (21) is connected to each differential signal terminal (30).

8. The signal terminal module according to claim 7, characterized in that: The overmolded insulator (21) has a portion extending to the molded surface (22).

9. A connector comprising a signal terminal module (2), characterized in that: The signal terminal module (2) is the signal terminal module (2) according to any one of claims 1 to 8.

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