Terminal module and electric connector

Abstract

The utility model relates to the field of high-frequency conductive connection, in particular to a terminal module and an electric connector. The terminal module comprises the insulating part and the differential signal pair arranged in the insulating part, the differential signal pair comprises the differential terminals which are arranged in parallel, and the insulating plastic wall which is not lower than the upper surfaces of the differential terminals is arranged between the paired differential terminals exposed on the insulating part. The possibility that the insulation and voltage resistance of the electric connector is weakened due to lap joint of metal free objects between the differential terminals in the using process is reduced, and the reliability and the voltage resistance of the electric connector are enhanced by adopting a simple structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the conductive connection field of high frequency especially terminal module and electric connector. BACKGROUND

[0002] With the development of communication information technology, high-density, high-transmission-rate differential connectors are widely used in large communication equipment, ultra-high-performance servers and giant computers, industrial computers, high-end storage devices. The differential connector usually includes a shell and a plurality of signal modules arranged in the shell along the left-right direction. Each signal module includes an insulating member and a plurality of differential pairs of terminals fixed to the insulating member and arranged in the up-down direction.

[0003] The contact pieces of the existing differential connector are usually machined by mechanical machining, such as continuous stamping or turning of the mold. Taking the continuous stamping of the mold as an example, when the punch is worn or the mating gap between the contact piece and the mold changes, stamping burrs or metal chips will be easily produced during the stamping process. In addition to the above machining process, the contact piece terminals and the mold sealing glue position interference scratch will also easily produce metal chips during the terminal insert injection molding process. Before the terminal insert injection molding process, the contact piece needs to be positioned and fixed using a mold. In order to facilitate the positioning of the mold, there will be a continuous material between the terminals. After injection molding, a pressure line hole and a hollow part exposing the continuous material will be produced on the insulating member. After completing the terminal insert injection molding process, the continuous material needs to be cut. The continuous material cutting position is also easy to produce metal chips. In addition, there are some conductive foreign matter such as metal chips in the processing environment. These conductive foreign matter such as metal chips adhered to the contact piece enter the inside of the connector, forming free metal chips, which can easily cause breakdown between the adjacent surfaces of the exposed part of the differential terminal, causing insulation withstand voltage risk of the connector.

[0004] In order to avoid the insulation withstand voltage risk of the connector caused by the above phenomenon, the common solutions include the following two kinds: one is to produce the connector in a highly clean environment, and the other is to improve the precision of stamping. However, such measures are more cumbersome to control, and cannot completely avoid the product withstand voltage risk caused by free metal chips. Therefore, how to better avoid the withstand voltage risk of high-speed connectors caused by free metal chips in the processing environment during use is very critical to ensure the reliability of the connector. SUMMARY

[0005] The utility model aims at providing a kind of terminal module, to solve the problem of easy production of conductive foreign matter lap between the terminal of existing terminal module. Meanwhile, the utility model also provides a kind of electric connector using the above terminal module.

[0006] In order to achieve the above object, the terminal module adopts the following technical scheme:

[0007] A terminal module, comprising an insulating piece and a differential signal pair arranged in the insulating piece, the differential signal pair comprising differential terminals arranged in parallel, the differential terminals comprising strip-shaped terminal bodies, the insulating piece being provided with a hollow slot partially exposing the differential signal pair, two or three side surfaces of the differential signal pair in the hollow slot being covered by the insulating piece to form a two- or three-side rubber coating structure, and an insulating plastic wall capable of insulating and separating the differential terminals is arranged between the coupling surfaces of the differential terminals at the two- or three-side rubber coating structure of the differential signal pair, and the height of the insulating plastic wall is not less than the upper surface of the differential terminals.

[0008] Further, the height of the insulating plastic wall is higher than the upper surface of the differential terminals and does not exceed the upper surface of the insulating piece.

[0009] Further, the outer contour of the insulating plastic wall is rectangular.

[0010] Further, the two side surfaces of the insulating plastic wall are respectively attached to the coupling surfaces of the differential terminals on the corresponding side.

[0011] Further, a grounding terminal is arranged between the differential signal pairs in the insulating piece.

[0012] Further, the side surface of the grounding terminal facing the hollow slot is completely covered by the insulating piece.

[0013] Beneficial effects: The utility model provides an improved terminal module, the terminal module comprises an insulating piece and a differential signal pair arranged in the insulating piece, the hollow slot on the insulating piece partially exposes the differential signal pair, and the exposed part of the differential pair is covered by the insulating piece to form a two- or three-side rubber coating structure, the terminal module of the utility model sets up the insulating plastic wall with certain height between the coupling surfaces of the exposed differential terminal pair, blocks the activity path of the free metal chips between the differential terminal pair, reduces the risk of foreign matter lapping between the terminals, and improves the voltage resistance performance of the electric connector to a certain extent.

[0014] The electric connector of the utility model adopts the following technical scheme:

[0015] The utility model discloses an electric connector, including terminal module, the terminal module includes insulating piece and sets up the differential signal pair in insulating piece, the differential signal pair includes the differential terminal of parallel setting, and the differential terminal includes the terminal body of strip, and the insulating piece is equipped with the hollow groove of the differential signal pair partial exposure, and the two side surfaces or three side surfaces of the differential signal pair in the hollow groove are covered by the insulating piece and form two -sided or three -sided rubber -coated structure, and the coupling surface between the differential terminal is equipped with the insulating plastic wall of the insulation isolation between the differential terminal at the two -sided or three -sided rubber -coated structure of the differential signal pair, the height of insulating plastic wall is not less than the upper surface of differential terminal.

[0016] Further, the height of the insulating plastic wall is higher than the upper surface of the differential terminal and does not exceed the upper surface of the insulating piece.

[0017] Further, the outer contour of the insulating plastic wall is rectangular.

[0018] Further, the two side surfaces of the insulating plastic wall are respectively attached to the coupling surface of the differential terminal of the corresponding side.

[0019] Further, a grounding terminal is further provided between each differential signal pair in the insulating piece.

[0020] Further, the side surface of the grounding terminal facing the hollow groove is completely covered by the insulating piece.

[0021] Beneficial effects: the utility model discloses the improvement to the terminal module in electric connector, and the terminal module includes insulating piece and sets up the differential signal pair in insulating piece, and the hollow groove on the insulating piece exposes the differential signal pair partially, and the exposed differential pair is covered by the insulating piece and forms two -sided or three -sided rubber -coated structure, and the terminal module of the utility model sets up the insulating plastic wall with a certain height between the coupling surface of the exposed differential terminal pair, and the activity path of the free metal scrap between the differential terminal pair is blocked, and the risk of foreign matter overlap between the terminal is reduced, and the withstand voltage performance of electric connector is improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of an embodiment of the electric connector of the utility model;

[0023] Figure 2 is Figure 1 a structural schematic view of the metal fixing plate in the middle;

[0024] Figure 3 is Figure 1 a structural schematic view of the insulating shell in the middle;

[0025] Figure 4 is a schematic view of an embodiment of the first terminal module of the utility model;

[0026] Figure 5 is a schematic view of the arrangement of differential terminals and ground terminals in the first terminal module;

[0027] Figure 6 is a schematic view of the structure of terminals in different functional areas in the first terminal module

[0028] Figure 7 is a schematic view of an embodiment of the second terminal module of the utility model;

[0029] Figure 8 is a schematic view of the arrangement of differential terminals and ground terminals in the second terminal module;

[0030] Figure 9 is a schematic view of the structure of an embodiment of the first terminal module of the utility model from another perspective;

[0031] Figure 10 is Figure 9 is a local enlarged schematic view of C in the middle;

[0032] Figure 11 is Figure 10 is a D-D sectional view in the middle;

[0033] In the figure: 1, electric connector; 11, first terminal module; 12, second terminal module; 13, insulating shell; 131, guide wall; 132, guide groove; 133, insertion hole; 14, hollow groove; 15, material connecting portion; 2, metal fixing plate; 21, tooth; 3, differential terminal; 4, ground terminal; 5, insulating piece; 51, insulating plastic wall; 52, cladding surface; 6, buckle structure; 7, two-sided cladding structure; 8, three-sided cladding structure; 9, wire pressing hole; 101, contact area; 102, wire area; 103, crimping area. DETAILED DESCRIPTION

[0034] The features and performance of the utility model are described in further detail below in combination with embodiments.

[0035] The inventive concept of the utility model is as follows: in the face of the problem that the adjacent surfaces (coupling surfaces) between the exposed parts of differential terminals in existing differential connectors are easily broken down by free metal, the utility model blocks the path through which free metal connects differential terminals, thereby improving the voltage resistance performance of the connector and ensuring the reliability of the connector.

[0036] As a basic technical solution, the electric connector of the utility model comprises an insulating shell, terminal modules vertically inserted into the insulating shell are arranged in the left-right direction, the paired terminal modules comprise a first terminal module and a second terminal module, and the differential signal pairs and ground terminals of different modules in the paired terminal modules are arranged in a staggered manner. The differential signal pairs in the hollow grooves of the insulating pieces are cladded by the insulating pieces to form two-sided or three-sided cladding structures, such as Figure 11As shown, taking a double-sided coating structure as an example, the double-sided coating structure refers to a differential terminal 3 with two adjacent coated surfaces 52 formed by two adjacent side surfaces of the differential terminal 3 being coated by an insulating member 5. In the double-sided or three-sided coating structure of the differential signal pair, an insulating plastic wall of a certain height is provided between the coupling surfaces of the differential terminals. The insulating plastic wall can block the path of free metal chips between adjacent differential terminals, achieving insulation isolation between the terminals. This solves the problem that existing connectors cannot completely avoid free metal chips in the processing environment during use, resulting in poor voltage resistance performance of the connector product.

[0037] The following examples are provided for illustration.

[0038] like Figures 1-3 As shown, the electrical connector 1 in this embodiment includes paired terminal modules and an insulating housing 13. The paired terminal modules include a first terminal module 11 and a second terminal module 12. The largest surface of the insulating housing 13 serves as a mating end for mating with the terminal modules. Specifically, the mating end is provided with mating holes 133 that mate with the terminals of the terminal modules. Guide walls 131 extend upward from opposite sides of the mating end. Guide grooves 132 corresponding to the terminal modules are provided on the inwardly facing surfaces of the guide walls 131. The guide grooves 132 on the opposing guide walls 131 constitute the guide mounting ends of the insulating housing 13, providing guidance and protection during installation of the terminal modules. The terminal modules are provided with snap-fit ​​structures 6 on both sides facing the guide grooves 132 for retaining the guide grooves 132. After installation, the guide mounting ends engage with the snap-fit ​​structures 6 to horizontally retain the terminal modules. The terminal modules are arranged side by side at the mating end, with identical terminal modules spaced apart from each other.

[0039] like Figures 4-8 As shown, the terminal module includes an insulating member 5 and a differential signal pair disposed within the insulating member 5. The differential signal pair includes parallel differential terminals 3, each comprising a strip-shaped terminal body. The portion of the terminal body within the insulating member 5 constitutes the wiring area of ​​the terminal module. One end of the strip-shaped terminal body extending from the insulating member 5 forms a contact area 101, and the other end forms a crimping area 103. Before the terminal insert injection molding process, a mold is used to position and secure the terminal body. To facilitate mold positioning, a material connection is left between the terminals. After injection molding, the insulating member 5 is provided with a wire pressing hole 9 and a hollow portion to expose the material connection, etc. Specifically, the insulating member 5 has a hollow groove 14 within the wiring area 102 that partially exposes the differential signal pair. The differential signal pair within the hollow groove 14 is covered on two or three sides by the insulating member 5, forming a two-sided or three-sided adhesive coating structure. Some hollow grooves 14 also expose the material connection 15, facilitating cutting of the material connection after the insert injection molding process is completed.

[0040] The terminal body in the terminal module at the contact area 101 is used for plugging with the plug-in end on the insulating shell 13, in order to further fix the terminal module, ensure the stability of the connection between the terminal module and the insulating shell, the metal fixing sheet 2 with straight-toothed comb is used in the electric connector to fix the end of the terminal module away from the contact area 101, when in use, the terminal module is in the gap formed between the adjacent teeth 21 on the metal fixing sheet 2, which improves the stability of the crimping of the electric connector 1 without affecting the vertical relationship between the terminal module and the plug-in surface.

[0041] When the electric connector 1 needs to be used after being assembled, in order to eliminate the risk of foreign matter overlap between the differential terminals 3 due to the adhesion of free metal chips between the differential terminals 3 in the hollow groove 14, as shown in Figures 9-11 An embodiment, the differential signal pair is provided with an insulating plastic wall 51 capable of achieving insulation isolation between the differential terminals 3 between the coupling surfaces of the differential terminals 3, the height of the insulating plastic wall 51 is not less than the upper surface of the differential terminal 3, the insulating plastic wall 51 blocks the activity path of the free metal chips between the adjacent differential terminals 3 to ensure that the differential terminals 3 do not occur between the differential terminals 3 due to the overlap of the free metal chips between the coupling surfaces of the differential terminals 3.

[0042] In order to make the insulating plastic wall 51 can realize the insulation isolation between the differential terminals 3, and can not interfere with the opposite terminal module when the terminal module is used in pairs, as shown in Figures 9-11 An embodiment, the height of the insulating plastic wall 51 is higher than the upper surface of the differential terminal 3, and does not exceed the upper surface of the insulating part 5. The height of the insulating plastic wall 51 is between the upper surface of the differential terminal 3 and the upper surface of the insulating part 5, which can block the activity path of the free metal chips between the coupling surfaces of the differential terminals 3, effectively reduce the risk of conductive foreign matter overlap between the terminals, and ensure that the insulating plastic wall 51 is sunk in the hollow groove 14 of the insulating part 5 when the terminal module is used in pairs, without interfering with the opposite terminal module. Of course, it is not necessary to set the height of the insulating plastic wall 51 to be not higher than the upper surface of the insulating part 5, when the height of the insulating plastic wall exceeds the upper surface of the insulating part 5, the corresponding avoiding groove can be provided on the opposite terminal module to avoid the protruding part of the insulating plastic wall on the insulating part.

[0043] On the basis of meeting the above conditions, the insulating plastic wall 51 can be set to any processable shape. For example, the insulating plastic wall 51 can be an insulating plastic wall with an inverted U-shaped outer contour, and can also be an insulating plastic wall with a triangular outer contour. In order to effectively improve the creepage distance between the conductive terminals and further improve the withstand voltage performance of the electrical connector 1, in a more preferred embodiment, the insulating plastic wall 51 has a rectangular outer contour, which effectively improves the creepage distance between the conductive terminals while avoiding the lapping of conductive foreign matter between the terminals. Since the insulating plastic wall 51 in this embodiment is integrally connected with the insulating member 5, the insulating plastic wall 51 also functions as a reinforcing rib to improve the mechanical strength of the terminal module. The insulating plastic wall 51 is arranged between the pair of differential terminals 3 in the hollow groove 14. In an embodiment, there is a gap between the two side surfaces of the insulating plastic wall 51 and the coupling surfaces of the corresponding differential terminals. At this time, the insulating plastic wall 51 can also block the movement path of the loose metal chips between the coupling surfaces of the differential terminals, but considering that the insulating plastic wall 51 in this embodiment is integrally connected with the insulating member 5, and the insulating member is processed by injection molding, in a more preferred embodiment, the two side surfaces of the insulating plastic wall 51 are respectively attached to the coupling surfaces of the differential terminals 3 on the corresponding side, which ensures the blocking performance of the insulating plastic wall 51 while reducing the processing cost of the insulating member and enhancing the versatility of the injection mold.

[0044] On the basis of the above inventive concept or embodiment, another embodiment of an electrical connector is also provided herein, the terminal module is provided with a grounding terminal 4 in the insulating member 5, and the grounding terminal 4 is distributed between each differential signal pair. When the terminal module is used in pairs, the differential signal pairs and the grounding terminal 4 in the first terminal module 11 and the second terminal module 12 are arranged in a staggered manner to avoid the risk of conduction between the modules. Specifically, as shown in Figures 4-8 , the terminals in the first terminal module 11 are arranged in the direction of Figure 5 from top to bottom as differential signal pair-grounding terminal-differential signal pair-grounding terminal-differential signal pair-grounding terminal-differential signal pair-grounding terminal, and the terminals in the second terminal module 12 used in pairs with the first terminal module 11 are arranged in the direction of Figure 8 from top to bottom as grounding terminal-differential signal pair-grounding terminal-differential signal pair-grounding terminal-differential signal pair-grounding terminal-differential signal pair. In order to completely eliminate the influence of loose conductive foreign matter in the processing environment on the withstand voltage performance of the electrical connector 1, in an embodiment, the side surface of the grounding terminal 4 facing the hollow groove 14 is completely covered by the insulating member, which blocks the movement path of the loose metal chips between the coupling surfaces of the grounding terminal 4 and the adjacent differential terminals 3 in the hollow groove 14, and further improves the withstand voltage performance of the electrical connector.

[0045] The utility model also provides a kind of terminal module, the embodiment of terminal module is identical with the structure of terminal module in the above-mentioned electric connector, this paper does not add extra words.

[0046] The above is only the preferred embodiment of the utility model, and does not limit the utility model, the patent protection scope of the utility model is subject to the claims, any equivalent structural changes made by applying the contents of the specification and drawings of the utility model should also be included in the protection scope of the utility model.

Claims

1. Terminal module comprising an insulating piece (5) and a differential signal pair arranged in the insulating piece (5), the differential signal pair comprising differential terminals (3) arranged in parallel, the differential terminals (3) comprising strip-shaped terminal bodies, the insulating piece (5) being provided with a hollow groove (14) partially exposing the differential signal pair, two or three side faces of the differential signal pair in the hollow groove (14) being covered by the insulating piece (5) to form a two- or three-side encapsulation structure, characterized in that, At the two-sided or three-sided adhesive coating structure of the differential signal pair, an insulating plastic wall (51) capable of achieving insulation isolation between the differential terminals (3) is provided between the coupling surfaces of the differential terminals (3), and the height of the insulating plastic wall (51) is not lower than the upper surface of the differential terminals (3).

2. The terminal module of claim 1, wherein The height of the insulating plastic wall (51) is higher than the upper surface of the differential terminal (3) and does not exceed the upper surface of the insulating member (5).

3. Terminal module according to claim 1 or 2, characterized in that The outer contour of the insulating plastic wall (51) is a rectangle.

4. The terminal module according to claim 1 or 2, characterized in that The two side surfaces of the insulating plastic wall (51) are respectively fitted with the coupling surfaces of the differential terminals (3) on the corresponding sides.

5. The terminal module of claim 1, wherein, A ground terminal (4) is also provided inside the insulating member (5) between each differential signal pair.

6. The terminal module of claim 5, wherein, The side of the grounding terminal (4) facing the hollow groove (14) is completely covered by the insulating member (5).

7. An electrical connector comprising a terminal module, the terminal module comprising an insulating piece (5) and a differential signal pair provided in the insulating piece (5), the differential signal pair comprising differential terminals (3) arranged in parallel, the differential terminals (3) comprising strip-shaped terminal bodies, the insulating piece (5) being provided with a hollow groove (14) partially exposing the differential signal pair, two or three side surfaces of the differential signal pair in the hollow groove (14) being covered by the insulating piece (5) to form a two- or three-side encapsulation structure, characterized in that, At the two-sided or three-sided adhesive coating structure of the differential signal pair, an insulating plastic wall (51) capable of achieving insulation isolation between the differential terminals (3) is provided between the coupling surfaces of the differential terminals (3), and the height of the insulating plastic wall (51) is not lower than the upper surface of the differential terminals (3).

8. The electrical connector of claim 7, wherein, The height of the insulating plastic wall (51) is higher than the upper surface of the differential terminal (3) and does not exceed the upper surface of the insulating member (5).

9. The electrical connector of claim 7 or 8, wherein, The outer contour of the insulating plastic wall (51) is a rectangle.

10. The electrical connector of claim 7 or 8, wherein, The two side surfaces of the insulating plastic wall (51) are respectively fitted with the coupling surfaces of the differential terminals (3) on the corresponding sides.

11. The electrical connector of claim 7, wherein, A ground terminal (4) is also provided inside the insulating member (5) between each differential signal pair.

12. The electrical connector of claim 11, wherein, The side of the grounding terminal (4) facing the hollow groove (14) is completely covered by the insulating member (5).

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