A self-mating, fully shielded, high speed electrical connector

Abstract

The application discloses a self-matching, full-shield and high-speed electric connector, which comprises a connector body, the connector body is composed of a base, a signal pin joint and a grounding sheet, and the signal pin joint and the grounding sheet are inserted into independent cavities on the base in an interference fit, characterized in that a contact area of the grounding sheet is divided into a second elastic needle and a sheet; the connector body is a self-matching structure, and after being turned over by 180 degrees, the connector body is parallelly inserted into and matched with another connector body, the elastic sheet pin on the signal pin joint is turned over by 180 degrees and is inserted into another signal pin joint to form a signal loop, meanwhile, the second elastic needle and the sheet on the two grounding sheets are elastically matched to form a shielding cavity and wrap the signal loop formed by the insertion of the signal pin joint. The application can better control the coding quantity of products, realize batch production of the same product, effectively reduce the purchasing cost, and effectively reduce the mutual interference between signals.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, and particularly relates to a self-fitting, fully shielded, high-speed electrical connector. Background Technology

[0002] Electrical connectors, as bridges for signal transmission, play an indispensable role in system operation. As an important link in the interconnection between parallel boards, board connectors are often used for signal transmission within a single machine. As the functions of each single machine become more and more powerful, the number of components inside the single machine is also increasing. The electromagnetic radiation of various components makes the electromagnetic environment inside the entire single machine more and more complex. When transmitting high-speed signals, external electromagnetic interference gradually becomes an important factor restricting the quality of signal transmission.

[0003] Therefore, reducing the interference of external electromagnetic fields on high-speed signals and between high-speed signals is becoming increasingly important in connector design.

[0004] In addition, there are many types of high-speed connectors, most of which are male and female products that are spliced ​​together. In order to better control the number of product codes, achieve mass production of the same product, and effectively reduce procurement costs, this is an urgent problem to be solved. Summary of the Invention

[0005] To address the problems in the prior art, the present invention proposes the following technical solution:

[0006] A self-fitting, fully shielded, high-speed electrical connector includes a connector body, which is composed of a base, a signal pin assembly, and a grounding plate. The signal pin assembly and the grounding plate are interference-fitted into independent cavities on the base. The grounding plate is characterized in that its contact area is divided into a second spring pin and a insert.

[0007] The connector body is a self-fitting structure. After being flipped 180°, it can be parallelly inserted and mated with another connector body. After being flipped 180°, the spring pins on the signal pin assembly can be inserted with another signal pin assembly to form a signal circuit. At the same time, the second spring pins and inserts on the two grounding plates can be elastically fitted to form a shielding cavity and wrap the signal circuit formed by the insertion of the signal pin assembly.

[0008] In this invention, the base, signal pin assembly, and grounding plate in the connector body are all designed as self-fitting structures. After being rotated 180°, they can be mated and matched with themselves, eliminating the need for matching male and female products. This allows for better control of the product's coding quantity, enabling mass production of the same product and effectively reducing procurement costs. At the same time, while the connector body is mating and matching with itself, it forms a shielded cavity and encloses the signal circuit, which can effectively reduce mutual interference between signals.

[0009] As a preferred embodiment of the above technical solution, a positioning post is provided on the outer side of the base.

[0010] The connector body is designed with positioning posts for guiding and positioning when assembling the connector body with the printed circuit board.

[0011] As a preferred embodiment of the above technical solution, the inner side of the base is provided with a clearance groove, an outer chamfer, and an inner chamfer.

[0012] During the insertion process, the second spring pin enters the clearance groove. After insertion, the two grounding plates enclose the entire signal pin assembly, forming a shielded cavity around the signal during signal transmission, providing excellent anti-interference capabilities. During insertion, the outer and inner chamfers of the base opening preferentially engage, serving a guiding function.

[0013] As a preferred embodiment of the above technical solution, the signal pin assembly further includes a small base around the spring insert pin, and the signal pin assembly and the grounding plate are positioned by the cooperation of the protrusion on the small base and the square opening on the grounding plate.

[0014] The bumps, positioning pieces, and positioning steps on the connector body cooperate to form a positioning system.

[0015] The signal pin assembly is placed inside the grounding plate. The protrusion on the signal pin assembly corresponds to the square opening on the grounding plate. The two cooperate to form a positioning mechanism. The signal pin assembly and the grounding plate form a signal unit, which is assembled in each independent cavity of the connector body. The protrusion, positioning plate, and positioning step on the connector body cooperate to form a positioning mechanism.

[0016] As a preferred embodiment of the above technical solution, grooves are provided on both sides of the small base.

[0017] A groove is designed on the small base to match the impedance of the signal channel and meet the requirements of high-speed signal transmission.

[0018] As a preferred embodiment of the above technical solution, the spring pins are provided with concave arcs on both sides inside the small base, and the first spring pin at the tail end of the spring pin and the second spring pin at the tail end of the grounding piece are both machined into arc shapes.

[0019] As a preferred embodiment of the above technical solution, the tail end insert of the grounding plate is chamfered.

[0020] The rounded design of the first and second spring pins, as well as the chamfered design of the insert, can prevent pin collisions during the insertion process.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. In this invention, the base, signal pin assembly, and grounding plate in the connector body are all designed as self-fitting structures. After being rotated 180°, they can be mated and matched with themselves, eliminating the need for matching of male and female products. This allows for better control of the product's coding quantity, enabling mass production of the same product and effectively reducing procurement costs.

[0023] 2. When the connector body is mated with itself, it forms a shielded cavity and encloses the signal circuit, which can effectively reduce mutual interference between signals;

[0024] 3. In this invention, each model unit is placed in each independent cavity of the connector body, and different numbers of signals can be extended through an array. Attached Figure Description

[0025] Figure 1 The diagram shown is a schematic representation of the overall structure of the present invention;

[0026] Figure 2 The diagram shown is a structural schematic of the base, signal pin assembly, and grounding plate in the disassembled state of the present invention.

[0027] Figure 3 The diagram shown is a schematic of the base structure in this invention;

[0028] Figure 4 The diagram shown is a schematic diagram of the grounding plate structure in this invention;

[0029] Figure 5 The diagram shown is a schematic diagram of the signal pin assembly structure in this invention;

[0030] Figure 6 The diagram shown is a schematic diagram of the insertion of the signal pin assembly and the grounding plate in this invention;

[0031] Figure 7 The diagram shown is a self-fitting and mating schematic of the connector body in this invention.

[0032] Figure Labels

[0033] 1. Connector body; 11. Base; 111. Independent cavity; 112. Clearance groove; 113. Positioning post; 114. Outer chamfer; 115. Inner chamfer; 116. Positioning step; 12. Signal pin assembly; 121. Spring insert pin; 122. Small base; 1211. First fisheye; 1212. Concave arc; 1213. First spring pin; 1221. Protrusion; 1222. Groove; 13. Grounding piece; 131. Second fisheye; 132. Positioning piece; 133. Protrusion; 134. Second spring pin; 135. Square opening; 136. Insert; 137. Square hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0035] like Figure 1As shown, a self-fitting, fully shielded, high-speed electrical connector includes a connector body 1, which is fixed on two parallel printed circuit boards. The connector uses a first fisheye 1211 and a second fisheye 131 fisheye crimping method to connect the contacts to the printed circuit boards. Each signal unit of the connector has an independent signal circuit, and the signal circuit is wrapped by a shielded cavity, providing good shielding effect. Each model unit is placed in each independent cavity 111 of the connector body 1, and different numbers of signals can be amplified through an array.

[0036] like Figure 2 As shown, the signal pin assembly 12 is placed inside the grounding plate 13. By adjusting the angle of the bent square hole 137, the grounding plate 13 is wrapped around the signal pin assembly 12. The protrusion 1221 on the signal pin assembly 12 corresponds to the square opening 135 on the grounding plate 13, and the two cooperate to form a positioning. The signal pin assembly 12 and the grounding plate 13 form a signal unit, which is assembled in each independent cavity 111 of the connector body 1. The protrusion 1221, the positioning plate 132 and the positioning step 116 of the connector body 1 cooperate to form a positioning. The protrusion 133 designed on the grounding plate 13 forms an interference fit with the inner wall of the independent cavity 111 to ensure that the signal unit has a certain holding force inside the base.

[0037] like Figure 3 , Figure 4 , Figure 5 As shown, the contact area of ​​the grounding piece 13 is divided into two parts: the second spring pin 134 and the insert 136. When mated, the second spring pin 134 and the insert 136 at the mating end elastically cooperate to form a metal-encased shielding cavity; the spring insert pin 121 of the signal pin assembly 12 can also be mated with itself after being rotated 180°. After mating, the signal pin assembly 12 is completely wrapped by the grounding piece 13, forming a fully shielded structure. The spring insert pin 121 is injection molded and fixed to the small base 122. The spring insert pin 121 has a first fisheye 1211 structure for termination with the printed circuit board. When the spring insert pin 121 is pressed against the printed circuit board, there is a certain reaction force. To ensure that the spring insert pin 121 will not move under force inside the small base 122, a concave arc 1212 structure is designed. In addition, in order to adjust the characteristic impedance of the differential signal, a groove 1222 is designed on the small base 122 to match the impedance of the signal channel and meet the transmission requirements of high-speed signals.

[0038] like Figure 6 , Figure 7As shown, the base 11, grounding plate 13, and signal pin assembly 12 can all be inserted into themselves after being rotated 180°, satisfying the self-fitting feature of this invention. During the insertion process, the outer chamfer 114 and inner chamfer 115 at the opening of the base 11 engage first, providing a certain guiding function. After aligning the position, the second spring pin 134 on the grounding plate 13 engages with the insert 136. The top of the second spring pin 134 is rounded, and the top of the insert 136 is chamfered, avoiding pin-hitting during the insertion process. Finally, the spring pin 121 engages. The first spring pin 1213 at the top is designed with a rounded guide, and the two spring pins 121 have a symmetrical structure. After deformation under force, the contact points are also symmetrically distributed, forming two effective contact points and improving the contact reliability of the contact components. During the insertion process, the second spring pin 134 enters the clearance groove 112 of the connector body 1. After mating, the two grounding plates 13 completely enclose the signal pin assembly 12, forming a shielded cavity around the signal during signal transmission, providing excellent anti-interference capabilities. During packaging, transportation, and use, the grounding plates 13 and signal pin assembly 12 remain inside the connector body 1, preventing deformation of the grounding plates 13 and signal pin assembly 12 due to external forces.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A self-fitting, fully shielded, high-speed electrical connector, comprising a connector body (1), the connector body (1) being composed of a base (11), a signal pin assembly (12), and a grounding plate (13), wherein the signal pin assembly (12) and the grounding plate (13) are interference-fitted into an independent cavity (111) on the base (11), characterized in that, The contact area of ​​the grounding piece (13) is divided into a second spring pin (134) and a plug (136); The connector body (1) is a self-fitting structure. After being flipped 180°, it is parallel to and interlocked with another connector body (1). After being flipped 180°, the spring pin (121) on the signal pin assembly (12) is interlocked with another signal pin assembly (12) to form a signal circuit. At the same time, the second spring pin (134) and the insert (136) on the two grounding plates (13) are elastically engaged to form a shielding cavity and enclose the signal circuit formed by the insertion of the signal pin assembly (12).

2. The self-fitting, fully shielded, high-speed electrical connector according to claim 1, characterized in that, A positioning post (113) is provided on the outer side of the base (11).

3. The self-fitting, fully shielded, high-speed electrical connector according to claim 1, characterized in that, The base (11) is provided with a relief groove (112), an outer chamfer (114) and an inner chamfer (115) on its inner side.

4. The self-fitting, fully shielded, high-speed electrical connector according to claim 1, characterized in that, The signal pin assembly (12) also includes a small base (122) around the spring insert pin (121). The signal pin assembly (12) and the grounding plate (13) are positioned by the protrusion (1221) on the small base (122) and the square opening (135) on the grounding plate (13). The protrusion (1221), the positioning piece (132), and the positioning step (116) on the connector body (1) cooperate with each other to form a positioning.

5. A self-fitting, fully shielded, high-speed electrical connector according to claim 4, characterized in that, The small base (122) has grooves (1222) on both sides.

6. A self-fitting, fully shielded, high-speed electrical connector according to claim 4, characterized in that, The spring pin (121) is provided with concave arcs (1212) on both sides inside the small base (122). The first spring pin (1213) at the tail end of the spring pin (121) and the second spring pin (134) at the tail end of the grounding piece (13) are both processed into arc shape.

7. A self-fitting, fully shielded, high-speed electrical connector according to claim 1, characterized in that, The end insert (136) of the grounding plate (13) is chamfered.

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