Grounding structure for an electrical connector

Abstract

The utility model discloses a ground structure of electric connector, including insulating body, ground sheet and a plurality of first terminal, the front of this insulating body is provided with the insertion slot, and the back of this insulating body is recessed with a containing groove and a plurality of first terminal groove, the ground sheet is fixed in containing groove, the ground sheet has at least one clamping part, and the clamping part has the card slot, at least one first terminal has the base, and the base is fixed with the card slot of clamping part's card holding cooperation, through setting clamping part on the ground sheet, and cooperate with the card slot of clamping part, utilize the base of first terminal and the card slot of clamping part's card holding cooperation fixed, replace traditional elastic sheet contact mode, and clamping part is not easy to cause deformation and produce bad in electroplating, assembly and other procedures, thereby guarantee the stability and reliability of the connection between clamping part and terminal, make the ground sheet and first terminal can good conduction connection, be favorable to reducing signal interference, realize good high frequency transmission effect.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, and in particular to a grounding structure for an electrical connector. Background Technology

[0002] The U.2 interface connector (also known as the SFF-8639 interface) is a high-speed, high-reliability storage device connection standard, primarily used for connecting solid-state drives (SSDs) or storage controllers to motherboards in enterprise servers, data centers, and high-performance computing scenarios. It combines standardized physical connector design with multi-protocol compatibility, aiming to meet the demands of modern storage for high bandwidth, hot-swapping, and flexible expansion.

[0003] The current U.2 interface connector mainly consists of an insulating body, a grounding plate, a first terminal group, and a second terminal group. The insulating body has a insertion groove on its front side. The grounding plate is disposed on the insulating body. The first terminal group and the second terminal group are respectively arranged in two rows on the insulating body. The contact parts of the first terminal group and the contact parts of the second terminal group both extend into the insertion groove. The first terminal group consists of multiple signal terminals and multiple ground terminals. In order to realize high-frequency transmission of signal terminals, multiple ground terminals need to be connected to the grounding plate.

[0004] In existing technology, a spring extends from the grounding plate, which elastically presses against the base of the grounding terminal to establish a conductive connection. However, the spring on the grounding plate is prone to deformation during electroplating, assembly, and other processes, resulting in a decrease in the bending force and subsequent defects. This compromises the stability and reliability of the contact between the spring and the terminal, making signal transmission susceptible to interference and hindering high-frequency transmission performance. Therefore, it is necessary to improve the current U.2 interface connector. Utility Model Content

[0005] In view of this, the present invention addresses the shortcomings of the existing technology, and its main objective is to provide a grounding structure for an electrical connector that effectively solves the problem that the existing U.2 interface connectors, which use spring-loaded contact terminals, cannot guarantee the stability and reliability of the contact between the spring and the terminal.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grounding structure for an electrical connector includes an insulating body, a grounding plate, and a plurality of first terminals. The insulating body has a mating groove on its front side and a receiving groove and a plurality of first terminal grooves recessed on its back side. The grounding plate is fixedly embedded in the receiving groove. The plurality of first terminals are fixedly embedded in the plurality of first terminal grooves, each having a first contact portion that extends into the mating groove. The grounding plate has at least one retaining portion with a retaining groove. At least one first terminal has a base that engages with the retaining groove of the retaining portion for fixation.

[0008] As a preferred embodiment, the receiving groove extends laterally, the grounding piece is elongated, and the plurality of first terminal slots are arranged laterally at intervals and are all connected to the receiving groove.

[0009] As a preferred embodiment, the depth of the receiving groove is greater than the depth of the first terminal groove.

[0010] As a preferred embodiment, the inner bottom surface of the receiving groove is recessed with a first fixing groove, and a first fixing part extends from the grounding piece, which is inserted into the first fixing groove for fixation.

[0011] As a preferred embodiment, there are multiple first fixing slots, which are spaced apart on the inner bottom edge of the receiving slot. The grounding plate has multiple first fixing parts, which are respectively inserted into the corresponding first fixing slots for fixation.

[0012] As a preferred embodiment, the grounding piece includes a main body portion, and the first fixing portion extends forward from the edge of the main body portion.

[0013] As a preferred embodiment, the grounding piece has multiple retaining portions, each of which has a retaining groove. The retaining grooves of the multiple retaining portions are respectively engaged and fixed with the base of the corresponding first terminal.

[0014] As a preferred embodiment, the grounding piece includes a main body portion, and the retaining portion extends backward from the edge of the main body portion.

[0015] As a preferred embodiment, the front side of the insulating body is provided with a plurality of second terminal slots, and further includes a plurality of second terminals, which are respectively embedded in the plurality of second terminal slots and fixed therein. Each of the plurality of second terminals has a second contact portion, which extends into the insertion slot.

[0016] As a preferred embodiment, the inner bottom surface of each of the plurality of first terminal slots is recessed with a second fixing slot, and each of the plurality of first terminals has a second fixing part, which is inserted into the second fixing slot for fixation.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0018] By setting a retaining part on the grounding plate and having a retaining groove on the retaining part, the base of the first terminal is fixed by engaging with the retaining part in the retaining groove, which replaces the traditional spring contact method. The retaining part is less likely to deform and cause defects during electroplating, assembly and other processes, thereby ensuring the stability and reliability of the connection between the retaining part and the terminal. This allows the grounding plate and the first terminal to have a good conductive connection, which helps to reduce signal interference and achieve good high-frequency transmission effect.

[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional assembly schematic diagram of a preferred embodiment of the present invention;

[0021] Figure 2 This is a three-dimensional assembly schematic diagram of a preferred embodiment of the present invention from another angle;

[0022] Figure 3 This is an exploded view of a preferred embodiment of the present invention;

[0023] Figure 4 This is an exploded view from another angle of a preferred embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of a preferred embodiment of the present invention;

[0025] Figure 6 This is a partial assembly diagram of a preferred embodiment of the present invention;

[0026] Figure 7 yes Figure 6 Enlarged view of position A in the middle;

[0027] Figure 8 This is an enlarged schematic diagram of the grounding plate in a preferred embodiment of the present invention.

[0028] Explanation of reference numerals in the attached diagram:

[0029] 10. Insulating body 11. Connecting slot

[0030] 12. Receiving groove; 13. First terminal groove

[0031] 14. First fixing groove; 15. Second fixing groove

[0032] 16. Second terminal slot 20. Grounding plate

[0033] 21. Card-holding part; 22. Main body part

[0034] 23. First fixing part 201, slot

[0035] 30. First terminal; 31. Base

[0036] 32. First contact part; 33. Second fixing part

[0037] 40. Second terminal; 41. Second contact portion

[0038] 50. Welding foot. Detailed Implementation

[0039] Please refer to Figures 1 to 8 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including an insulating body 10, a grounding piece 20, a plurality of first terminals 30, a plurality of second terminals 40, and two solder feet 50.

[0040] The insulating body 10 has a plug-in groove 11 on its front side and a receiving groove 12 and a plurality of first terminal grooves 13 recessed on its back side. In this embodiment, the insulating body 10 is made entirely of plastic and is formed by injection molding. The receiving groove 12 extends laterally, and the plurality of first terminal grooves 13 are arranged laterally at intervals and all communicate with the receiving groove 12. Furthermore, the depth of the receiving groove 12 is greater than the depth of the first terminal grooves 13. The inner bottom surface of the receiving groove 12 has a recessed first fixing groove 14, and there are multiple first fixing grooves 14, which are distributed at intervals along the inner bottom edge of the receiving groove 12. Additionally, the inner bottom surfaces of the plurality of first terminal grooves 13 each have a recessed second fixing groove 15. Furthermore, the front side of the insulating body 10 has a plurality of second terminal grooves 16.

[0041] The grounding plate 20 is fixedly embedded in the receiving groove 12. The grounding plate 20 has at least one retaining part 21, and the retaining part 21 has a retaining groove 201. In this embodiment, the grounding plate 20 is formed by stamping a metal sheet. The grounding plate 20 is elongated and includes a main body 22. The main body 22 is elongated and fits against the inner bottom surface of the receiving groove 12. The retaining part 21 extends backward from the edge of the main body 22. Furthermore, the grounding plate 20 has multiple retaining parts 21, each retaining part 21 having a retaining groove 20. The multiple retaining parts 21 extend backward from the upper edge and the lower edge of the main body 22, respectively. Furthermore, a first fixing part 23 extends from the grounding plate 20 and is fixed by inserting it into the first fixing groove 14. The grounding plate 20 has a plurality of first fixing parts 23, which are respectively inserted into the corresponding first fixing grooves 14 for fixing, so that the grounding plate 20 can be stably installed and fixed with the insulating body 10. In addition, the first fixing part 23 extends forward from the edge of the main body 22.

[0042] The plurality of first terminals 30 are respectively embedded in the plurality of first terminal slots 13 for fixation. At least one first terminal 30 has a base 31, which is suspended in the receiving slot 12. The base 31 is engaged and fixed with the slot 201 of the retaining part 21. Each of the plurality of first terminals 30 has a first contact part 32, which extends into the insertion slot 11. In this embodiment, the slots 201 of the plurality of retaining parts 21 are engaged and fixed with the base 31 of the corresponding first terminal 30. In addition, each of the plurality of first terminals 30 has a second fixing part 33, which is inserted into the second fixing slot 15 for fixation, so that the plurality of first terminals 30 are securely and reliably installed with the insulating body 10.

[0043] The plurality of second terminals 40 are respectively embedded in the plurality of second terminal slots 16 and fixed therein. Each of the plurality of second terminals 40 has a second contact portion 41. The plurality of second contact portions 41 extend into the insertion slot 11 and are located below the first contact portion 32.

[0044] The two welding feet 50 are respectively fixed to the bottom of both sides of the insulating body 10. Both welding feet 50 are harpoon-shaped welding feet, which are used for welding and fixing to the outside.

[0045] The assembly process of this embodiment is described in detail below:

[0046] First, the multiple first terminals 30 are embedded into the multiple first terminal slots 13 from front to back and fixed. Next, the grounding piece 20 is embedded into the receiving slot 12 from back to front and fixed. Then, the multiple first terminals 30 are embedded into the multiple first terminal slots 13 from back to front and fixed. After being embedded in place, the base 31 of some of the second terminals 30 is engaged and fixed with the corresponding slot 201 of the retaining part 21. Finally, the two solder feet 50 are fixed to the bottom of both sides of the insulating body 10.

[0047] The key design feature of this invention is that by setting a retaining part on the grounding plate and having a slot on the retaining part, the base of the first terminal is fixed by engaging with the slot of the retaining part, which replaces the traditional spring contact method. The retaining part is less prone to deformation and defects during electroplating, assembly and other processes, thereby ensuring the stability and reliability of the connection between the retaining part and the terminal. This allows the grounding plate and the first terminal to have a good conductive connection, which helps to reduce signal interference and achieve a good high-frequency transmission effect.

[0048] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A grounding structure for an electrical connector, comprising an insulating body, a grounding plate, and a plurality of first terminals; the insulating body has a mating groove on its front side and a receiving groove and a plurality of first terminal grooves recessed on its back side; the grounding plate is fixedly embedded in the receiving groove; the plurality of first terminals are respectively fixedly embedded in the plurality of first terminal grooves, each of the plurality of first terminals having a first contact portion extending into the mating groove; characterized in that: The grounding plate has at least one retaining portion with a retaining groove; at least one first terminal has a base that engages and is fixed with the retaining groove of the retaining portion.

2. The grounding structure of an electrical connector according to claim 1, characterized in that: The receiving groove extends laterally, the grounding piece is long and narrow, and the plurality of first terminal slots are arranged laterally at intervals and are all connected to the receiving groove.

3. The grounding structure of an electrical connector according to claim 1 or 2, characterized in that: The depth of the receiving groove is greater than the depth of the first terminal groove.

4. The grounding structure of an electrical connector according to claim 1, characterized in that: The inner bottom surface of the receiving groove is recessed with a first fixing groove, and a first fixing part extends from the grounding piece. The first fixing part is inserted into the first fixing groove for fixation.

5. The grounding structure of an electrical connector according to claim 4, characterized in that: There are multiple first fixing slots, which are spaced apart on the inner bottom edge of the receiving slot. The grounding piece has multiple first fixing parts, which are respectively inserted into the corresponding first fixing slots for fixation.

6. The grounding structure of an electrical connector according to claim 4, characterized in that: The grounding plate includes a main body, and the first fixing part extends forward from the edge of the main body.

7. The grounding structure of an electrical connector according to claim 1, characterized in that: The grounding plate has multiple retaining parts, each of which has a retaining groove. The retaining grooves of the multiple retaining parts are respectively engaged and fixed with the base of the corresponding first terminal.

8. The grounding structure of an electrical connector according to claim 1, characterized in that: The grounding piece includes a main body, and the retaining part extends backward from the edge of the main body.

9. The grounding structure of an electrical connector according to claim 1, characterized in that: The front side of the insulating body is provided with a plurality of second terminal slots, and further includes a plurality of second terminals. The plurality of second terminals are respectively embedded in the plurality of second terminal slots and fixed therein. The plurality of second terminals each have a second contact portion, and the plurality of second contact portions extend into the insertion slot.

10. The grounding structure of an electrical connector according to claim 1, characterized in that: The inner bottom surface of each of the plurality of first terminal slots is recessed with a second fixing slot, and each of the plurality of first terminals has a second fixing part, which is inserted into the second fixing slot for fixation.

Images