Connector

Abstract

The utility model relates to the technical field of electric connectors, in particular to a connector, which comprises a connector shell and signal terminal groups, the connector shell is provided with an inner surface and an outer surface, the connector shell is a conductive shell, the conductive shell is provided with terminal arrangement cavities in one-to-one correspondence with the signal terminal groups, and the signal terminal groups are arranged in the terminal arrangement cavities. The terminal arrangement cavities penetrate through the inner surface and the outer surface of the connector shell, unit insulators are arranged in the terminal arrangement cavities respectively, the signal terminal set is fixed on the unit insulators and is separated from the conductive shell through the unit insulators, the signal terminal set is not in contact with the conductive shell, and meanwhile the signal terminal set is in contact with the conductive shell. The parts, located on the inner surface and the outer surface of the connector shell, of the signal terminal set are shielded through the conductive shell, surrounding type shielding is formed on the periphery of the part, located in the terminal arrangement cavity, of the signal terminal set through the conductive shell, the structure is reliable, and the shielding effect can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive connection devices, in particular to a connector. Background Art

[0002] Backplane connectors are commonly used in large communication equipment, ultra-high performance servers, supercomputers, industrial computers, and high-end storage devices. With the development of technology, the rate of signal transmission is getting higher and higher. In order to meet the transmission performance requirements, good shielding effect is required during differential signal transmission to avoid signal interference between differential pairs.

[0003] A Chinese invention patent application with application publication number CN110165448A discloses an electrical connector, which includes an insulating shell and signal terminals and ground terminals installed on the insulating shell. The signal terminals are arranged in pairs, and a pair of signal terminals constitutes a signal terminal group. A conductive sheet is arranged on the inner surface of the insulating shell, and a conductive member is arranged on the outer surface. The conductive member and the conductive sheet are both shielding members. The insulating shell constitutes a connector shell. The conductive sheet and the conductive member are provided with through holes for the signal terminals and the ground terminals to pass through. The conductive member contacts the conductive sheet through multiple positioning parts that pass through multiple electrical connecting parts of the insulating shell, so that the conductive member is electrically connected to the conductive sheet. The shielding structure formed by the combination of the conductive member and the conductive sheet can achieve shielding of the portion of each signal terminal group that passes through the insulating shell, which can better shield signal interference between multiple signal terminals.

[0004] As for the shielding structure for shielding the signal terminal group of the above-mentioned connector, the conductive sheet and the conductive part are electrically connected by bonding with a conductive adhesive. This is easily affected by the amount of conductive adhesive applied and the installation error of the conductive sheet and the conductive part, which affects the bonding reliability of the conductive part and the conductive sheet, thereby affecting the shielding effect. Utility Model Content

[0005] The utility model aims to provide a connector to solve the problem that the structure in which the inner surface shielding part and the outer surface shielding part of the connector housing of the current connector are connected by conductive adhesive is easy to be unreliable and thus affects the shielding effect.

[0006] The technical solution of the connector of the utility model is:

[0007] A connector includes a connector housing and a signal terminal group. The connector housing has an inner surface and an outer surface. The connector housing is a conductive housing. The conductive housing is provided with terminal setting cavities corresponding to each signal terminal group one by one. The terminal setting cavities pass through the inner surface and the outer surface of the connector housing. Each terminal setting cavity is provided with a unit insulator. The signal terminal group is fixed on the unit insulator and separated from the conductive housing by the unit insulator.

[0008] Further, the terminal arrangement cavity has an inner opening located on the inner surface and an outer opening located on the outer surface, and the inner opening has the same size as the outer opening.

[0009] Further, the unit insulator is molded on the signal terminal group to form a terminal assembly unit, and the terminal assembly unit is installed in the terminal setting cavity.

[0010] Furthermore, the unit insulator is formed in the terminal setting cavity, and the unit insulator is provided with a signal terminal mounting hole for the terminal to be fixed and installed.

[0011] Furthermore, the signal terminal group is a differential pair, and the unit insulator is a block structure.

[0012] Furthermore, the connector includes a grounding terminal, a grounding terminal mounting hole is provided on the conductive shell, and the grounding terminal is interference fitted in the grounding terminal mounting hole.

[0013] Furthermore, the ground terminal is provided with a protrusion which is interference-fitted with the ground terminal mounting hole, and the portion of the ground terminal where the protrusion is provided is also provided with a deformation avoidance hole.

[0014] Furthermore, the conductive shell is a metal shell.

[0015] Furthermore, a conductive sheet is provided on the inner surface of the connector housing, and a spring claw for contacting the shielding structure of the adapter connector is provided on the conductive sheet.

[0016] Furthermore, a limiting groove is provided on the inner surface, the root of the spring claw has a portion extending into the limiting groove, and the end of the spring claw protrudes from the side of the conductive sheet facing away from the inner surface.

[0017] Beneficial effects: The utility model is improved on the basis of the connector in the prior art, and the connector shell is configured as a conductive shell, and a terminal setting cavity is respectively arranged on the conductive shell corresponding to each signal terminal group, and a unit insulator is arranged in the terminal setting cavity. Each signal terminal group corresponds to a unit insulator and is separated from the conductive shell by the unit insulator, and the signal terminal group does not contact the conductive shell. At the same time, the conductive shell is used to shield the parts of the signal terminal group located on the inner surface and the outer surface of the connector shell, and the conductive shell forms an enclosing shield around the part of the signal terminal group located in the terminal setting cavity. The structure is reliable, which is conducive to ensuring the shielding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a connector of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram without the conductive sheet;

[0020] Figure 3 for Figure 2 Schematic diagram without the terminal assembly unit;

[0021] Figure 4 for Figure 2 A schematic diagram of a terminal assembly unit in FIG.

[0022] Figure 5 for Figure 2 Schematic diagram of the signal terminals in;

[0023] Figure 6 for Figure 2 Schematic diagram of the ground terminal in;

[0024] Figure 7 for Figure 1 Schematic diagram of the conductive sheet in FIG.

[0025] Figure 8 for Figure 1 Schematic diagram of the connector in FIG. 1 and the adapter connector when they are plugged in.

[0026] In the figure: 1. conductive shell; 11. inner surface; 12. outer surface; 13. terminal setting cavity; 14. ground terminal mounting hole; 15. limiting groove; 16. mounting plate; 17. side plate; 2. unit insulator; 3. signal terminal; 4. ground terminal; 41. protrusion; 42. deformation avoidance hole; 5. conductive sheet; 51. signal terminal avoidance opening; 52. spring claw; 100. female connector; 200. male connector. DETAILED DESCRIPTION

[0027] The utility model configures the connector shell as a conductive shell, and respectively arranges a terminal setting cavity on the conductive shell corresponding to each signal terminal group, and arranges a unit insulator in the terminal setting cavity. Each signal terminal group corresponds to a unit insulator and is separated from the conductive shell by the unit insulator, and the signal terminal group does not contact the conductive shell. At the same time, the conductive shell is used to shield the parts of the signal terminal group located on the inner surface and the outer surface of the connector shell, and the conductive shell forms an enclosing shield around the part of the signal terminal group located in the terminal setting cavity. The structure is reliable and is conducive to ensuring the shielding effect.

[0028] Embodiments of the connector of the utility model:

[0029] like Figure 1 , Figure 2 , Figure 3As shown, the connector is a backplane connector, and the connector includes a connector housing, a unit insulator 2, a signal terminal 3, a ground terminal 4, and a conductive sheet 5. The signal terminals 3 are arranged in pairs to form differential pairs, each differential pair has two signal terminals 3, there are multiple differential pairs, each differential pair is arranged in several rows, each row has several differential pairs, and the differential pairs constitute a signal terminal group. Each differential pair in the same row is provided with a ground terminal 4 on both sides of the differential pair side by side. The ground terminal 4 and the signal terminal 3 both have a plug-in end, a middle section and a fisheye end. The middle sections of the ground terminal 4 and the signal terminal 3 pass through the connector housing, and the fisheye ends of the ground terminal 4 and the signal terminal 3 protrude outward from the outer surface 12 of the connector housing for crimping with the corresponding printed circuit board, and the plug-in ends of the signal terminal 3 and the ground terminal 4 protrude from the inner surface 11 of the connector housing for plugging with the contact of the adapter connector.

[0030] The connector housing is a conductive housing 1, which is a metal housing and can be produced by mechanical processing or metal powder injection, metal die-casting, special processing, etc. The connector housing includes a mounting plate portion 16 and side plate portions 17 arranged on both sides of the mounting plate portion 16. The two side plate portions 17 are arranged opposite to each other in the same row of differential pairs and form a U-shaped structure with the mounting plate portion 16. The mounting plate portion 16 has two opposite side plate surfaces. The side plate surface of the mounting plate portion 16 facing the side plate portion 17 constitutes the inner surface 11 of the connector housing, and the side plate surface of the mounting plate portion 16 facing away from the side plate portion 17 constitutes the outer surface 12 of the connector housing. The conductive shell 1 is provided with terminal setting cavities 13 corresponding to each differential pair one by one, and the terminal setting cavities 13 pass through the inner surface 11 and the outer surface 12 of the connector shell. A unit insulator 2 is respectively provided in each terminal setting cavity 13. The two signal terminals 3 of the differential pair are fixed on the unit insulator 2 and separated from the conductive shell 1 by the unit insulator 2. The conductive shell 1 is used to surround and shield the part of the differential pair located in the connector shell to ensure the shielding effect. At the same time, the conductive shell 1 is used to shield the differential pair, and the shielding structure is stable and reliable.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, in this embodiment, the unit insulator 2 is molded on the differential pair and forms a terminal assembly unit, and the terminal assembly unit is installed in the terminal setting cavity 13. The unit insulator 2 is made of insulating plastic material and is made by encapsulating the signal terminal 3 so that the unit insulator 2 and the signal terminal 3 are fixed. This fixing structure can be realized by the existing injection molding process. One unit insulator 2 fixes one differential pair. In order to ensure that the unit insulator 2 and the signal terminal 3 are reliably fixed, a step structure is provided on the middle section of the signal terminal 3 to play a role of stopping. By fixing the unit insulator 2 and the two signal terminals 3 of the differential pair to form a terminal assembly unit, and assembling the terminal assembly unit in the terminal setting cavity 13, efficiency can be improved and cost can be reduced.

[0032] The unit insulator 2 is a square structure, and the terminal setting cavity 13 is a square hole that penetrates from top to bottom. The square hole has the same size at all places in its penetration direction. The terminal setting cavity 13 has an inner opening located on the inner surface 11 and an outer opening located on the outer surface 12. The inner opening and the outer opening have the same size to facilitate the molding of the terminal setting cavity 13. The unit insulator 2 can be fixed in the terminal setting cavity 13 by interference fitting. The unit insulator 2 can prevent the signal terminal 3 from being connected to the ground terminal 4. The part of the signal terminal 3 located in the terminal installation cavity is surrounded by a metal shell, which can effectively shield and improve the anti-interference ability of the signal.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown, a grounding terminal mounting hole 14 is provided on the conductive shell 1, and the grounding terminal 4 is interference fitted in the grounding terminal mounting hole 14. The grounding terminal 4 is in conductive contact with the conductive shell 1, and a portion of the middle section of the grounding terminal 4 close to the fisheye end is provided with a protrusion 41 that is interference fit with the grounding terminal mounting hole 14. The portion of the grounding terminal 4 provided with the protrusion 41 is also provided with a deformation avoidance hole 42, and protrusions 41 are provided on both sides of the deformation avoidance hole 42. When the grounding terminal 4 is forcibly installed in the grounding terminal mounting hole 14, the existence of the deformation avoidance hole 42 can provide space for the protrusion 41 to be squeezed and deformed, absorb the deformation caused by the interference interference and provide holding force.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8As shown, the inner surface 11 of the conductive housing 1 is provided with a conductive sheet 5, one side of the conductive sheet 5 is in contact with the inner surface 11 of the conductive housing 1 and in conductive contact, and the conductive sheet 5 is provided with a signal terminal avoidance opening 51 for the differential pair to pass through and a ground terminal avoidance opening (not shown in the figure) for the ground terminal 4 to pass through. The conductive sheet 5 is provided with a spring claw 52 for contacting the shielding structure of the adapter connector, and the spring claw 52 is provided in multiple rows. The inner surface 11 of the conductive housing 1 is provided with a limiting groove 15 corresponding to the spring claw 52, ​​and the limiting groove 15 is correspondingly provided in multiple rows. Each row of limiting grooves 15 is located between two adjacent rows of differential pairs. The limiting groove 15 is a long groove extending in the direction in which the two signal terminals 3 of the differential pair are arranged side by side. The limiting groove 15 is connected to the adjacent terminal setting cavity 13 on both sides, and the spring claw 52 on the conductive sheet 5 is a bent cantilever. The spring claw 52 has a root connected to the main body of the conductive sheet 5 and a terminal away from the root. The spring claw 52 bends from the root to the terminal first toward one side of the main body and then bends in the opposite direction toward the other side of the main body, so that the root and the terminal of the spring claw 52 both protrude from the main body of the conductive sheet 5. The root of the spring claw 52 has a portion extending into the limiting groove 15. The side of the unit insulator 2 in the terminal setting cavity 13 can be used to cooperate with the groove wall of the limiting groove 15 to limit the spring claw 52 and provide space for the deformation of the spring claw 52. The terminal of the spring claw 52 protrudes from the side of the conductive sheet 5 that faces away from the inner surface 11. The connector is a male connector 200, and the adapter connector is a female connector 100. When the male connector 200 is plugged with the female connector 100, the spring claw 52 can abut against the shielding structure of the female connector 100, which can ensure the shielding conduction between the male connector 200 and the female connector 100 and ensure the signal transmission quality.

[0035] In other implementations, the unit insulator may be formed in the terminal setting cavity, a signal terminal mounting hole for fixing and installing the signal terminal may be formed on the unit insulator, and the signal terminal may be forcibly installed in the signal terminal mounting hole.

[0036] In other implementations, the unit insulator may be manufactured separately, and the independent unit insulator may be fixedly installed in the terminal setting cavity, and then the signal terminal may be fixed in the corresponding hole on the unit insulator.

[0037] In other implementations, the conductive housing may also be a housing made of conductive plastic.

[0038] In other implementations, the ground terminal may not be provided with a deformation avoidance hole.

[0039] In other embodiments, the spring claw can also be arranged to protrude toward the side of the inner surface of the conductive sheet facing away from the connector shell. A fixing hole can be provided on the conductive sheet, and a boss can be provided on the inner surface of the connector shell. The boss cooperates with the fixing hole to limit the conductive sheet.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connector, comprising a connector housing and a signal terminal group, wherein the connector housing has an inner surface and an outer surface, wherein: The connector housing is a conductive housing, which is provided with terminal setting cavities corresponding to each signal terminal group. The terminal setting cavities pass through the inner surface and the outer surface of the connector housing. Each terminal setting cavity is provided with a unit insulator. The signal terminal group is fixed on the unit insulator and separated from the conductive housing by the unit insulator.

2. The connector according to claim 1, characterized in that: The terminal arrangement cavity has an inner opening located on the inner surface and an outer opening located on the outer surface, and the inner opening has the same size as the outer opening.

3. The connector according to claim 1 or 2, characterized in that: The unit insulator is molded on the signal terminal group and forms a terminal assembly unit, and the terminal assembly unit is installed in the terminal setting cavity.

4. The connector according to claim 1 or 2, characterized in that: The unit insulator is formed in the terminal setting cavity, and the unit insulator is provided with a signal terminal mounting hole for the terminal to be fixed and installed.

5. The connector according to claim 1 or 2, characterized in that: The signal terminal group is a differential pair, and the unit insulator is a square structure.

6. The connector according to claim 1 or 2, characterized in that: The connector comprises a grounding terminal. A grounding terminal mounting hole is arranged on the conductive shell. The grounding terminal is interference fitted in the grounding terminal mounting hole.

7. The connector according to claim 6, characterized in that: The grounding terminal is provided with a convex point which is interference-fitted with the grounding terminal mounting hole, and the part of the grounding terminal provided with the convex point is also provided with a deformation avoidance hole.

8. The connector according to claim 1 or 2, characterized in that: The conductive shell is a metal shell.

9. The connector according to claim 1 or 2, characterized in that: The inner surface of the connector housing is provided with a conductive sheet, and the conductive sheet is provided with a spring claw for contacting the shielding structure of the adapter connector.

10. The connector according to claim 9, characterized in that: The inner surface is provided with a limiting groove, the root of the spring claw has a portion extending into the limiting groove, and the end of the spring claw protrudes from the side of the conductive sheet facing away from the inner surface.

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