CN201029176Y - electrical connector - Google Patents

Abstract

The utility model discloses an electric connector which can transfer in high speed and comprises an insulation body. A plurality of terminals contained in the insulation body and used for electrically connecting the contact jointing connector, and a shielding shell, wherein, the insulation body comprises a L shape contact jointing part extending along the fore and aft direction, a base which is relative to the contact jointing face and jointed with the contact jointing part, and a leading part which extends along the fore and aft direction. The shielding shell is provided with a containing space used for containing the insulation body and electrically connected to the circuit board so as to eliminate the electromagnetic interference(EMI). The electric connector has the efficacies of simple structure, comparatively low cost and good effect in eliminating the electromagnetic interference.

Description

electrical connector

【Technical field】

The utility model relates to an electric connector, especially an electric connector for high-speed transmission.

【Background technique】

A board-mount electrical connector generally includes an insulating body and a plurality of terminals accommodated in the insulating body for electrically connecting with the cable connector and mounting on the printed circuit board. When the electrical connector is used for high-speed transmission, it is necessary to design a metal shell to prevent electromagnetic interference and achieve the best performance. US Patent No. 6,139,365 discloses an electrical connector assembly including an upper cover and a lower cover, wherein the upper cover and the lower cover cooperate with each other to form a receiving space. The lower shielding element and the upper shielding element cooperate with each other to surround the insulating body and are accommodated in the accommodating space to shield the connector assembly. US Patent No. 6,709,286B1 also discloses an electrical connector, which has an insulating body and several pairs of signal terminals and a plurality of grounding terminals alternately accommodated in the insulating body. The electrical connector is further provided with a housing disposed at the front end, a gasket and a lock receiving portion installed at the front of the housing. However, the above two anti-electromagnetic interference electrical connectors are relatively complex in structure, and at the same time, the manufacturing cost is relatively high. These two disadvantages are not appreciated by manufacturers and customers.

In recent years, SATA connectors have been widely used in networks, servers, and high-speed data processing storage devices. In order to adapt to the high-speed application environment, the SATA connector should be equipped with a shielding shell to obtain a better signal transmission effect. However, the above housing structure is not suitable for SATA connectors.

Therefore, it is necessary to provide an electrical connector with a shielding housing.

【Content of utility model】

The main purpose of the present invention is to provide an electrical connector, which has a shielding case against electromagnetic interference to achieve good performance.

In order to achieve the above object, the utility model adopts the following technical solutions: an electrical connector includes an insulating body and a metal shielding shell; wherein the insulating body includes a base, a docking portion extending forward from the base, and a pair of guide columns, the docking portion A first space is formed in the lateral direction between the pair of guide columns; the metal shell surrounds the above-mentioned base and the docking portion, the cross section of the docking portion in the front-rear direction is L-shaped, and a second space is formed between the guide columns , the second space is laterally aligned with the docking portion.

Compared with the prior art, the electrical connector of the utility model has the following effects: simple structure, low cost and the ability to eliminate electromagnetic interference.

【Description of drawings】

FIG. 1 is a three-dimensional exploded view of the electrical connector of the present invention.

FIG. 2 is a view from another perspective of the electrical connector shown in FIG. 1 .

FIG. 3 is an enlarged view of terminals of the electrical connector shown in FIG. 1 .

FIG. 4 is a three-dimensional assembly view of the electrical connector of the present invention.

FIG. 5 is a view from another perspective of the electrical connector shown in FIG. 4 .

【Detailed ways】

Please refer to FIG. 1 and FIG. 2 , the electrical connector 100 of the present invention includes an insulating body 2 , a plurality of terminals 3 accommodated in the insulating body 2 and a shielding case 1 assembled in the insulating body 2 . The insulating body 2 includes an L-shaped tongue-shaped butt joint portion 20 , a guiding portion and a base portion 23 . The shielding case 1 is provided with a pair of grounding plates 15 welded on the circuit board 4 . The L-shaped docking portion 20 is formed extending from the base portion 23 along the front-rear direction and includes a horizontal main portion 21 and a side portion 22 extending upward from one side of the main portion 21 . A pair of elevated mounting portions 24 are respectively disposed on opposite lateral ends of the base portion 23 . A top side of the main body 21 defines a plurality of parallel grooves 211 , and the base 23 defines a plurality of through holes 231 aligned with the aforementioned grooves 211 . The grooves 211 have different lengths and include longer grooves 211 for accommodating ground terminals and shorter grooves 211 for accommodating signal terminals. A pair of T-shaped slots 232 are respectively recessed from opposite sides of the base 23 and aligned with the ground holes 42 on the circuit board 4 . Opposite to the above-mentioned side part 22, L-shaped guide posts 233 and wedge-shaped guide posts 234 aligned in the vertical direction extend forward from the upper and lower edges of the mounting part 24 respectively, and the pair of guide posts respectively occupy the shielding shell A corner of the side part 22 of 1 away from the docking part 20 serves as a guide part together, and a first space is formed in the transverse direction between the docking part 20 and the pair of guide posts, and a second space is further provided between the guide posts 233, 234. Two spaces, the second space is aligned with the docking portion 20 in the transverse direction. A pair of protrusions 241 extend forward from the uppermost edge of the mounting portion 24 , and a pair of depressions 25 are respectively formed between the protrusions 241 and the top surface of the base portion 23 . A shorter protruding strip 235 is connected to the bottom surface of the base 23 and has a locking portion 236 .

The shielding shell 1 is made of metal material or other conductive materials, and it includes a top wall 11, a bottom wall 12 and a pair of side walls 13, 14, and the side walls 13, 14 are connected with the top and bottom walls 11, 12 and Together they form a containment space. A pair of rectangular openings 111 are defined on the top wall 11 , and a pair of V-shaped grounding springs 112 are respectively bent from rear edges of the openings 111 and extend into the receiving space. The bottom wall 12 defines a pair of fastening holes 121 adjacent to the mating surface of the shielding shell 1 and an opening 122 adjacent to the rear end surface of the shielding shell 1 . Each sidewall 13, 14 is provided with an S-shaped grounding piece 15 extending backward from its rear end.

Referring to FIG. 3 , each terminal 3 includes a holding portion 31 , a contact portion 32 extending forward from the holding portion 31 , and a tail portion 33 . The retaining portion 31 is provided with a pair of interference portions 311 laterally extending from two sides thereof and arranged at intervals along the front-rear direction. The terminal 3 includes a signal terminal and a ground terminal which are spaced apart from each other. The tail of the ground terminal first extends downward and then backward from the holding portion 31, and the tail of the signal terminal extends upward and then backward from the holding portion 31. Therefore, the signal terminal and The tails of the ground terminals are staggered and spaced into two rows, and the tails of the ground terminals are also longer than the tails of the signal terminals.

Please refer to Figure 3, Figure 4 and Figure 5, and in combination with Figure 1 and Figure 2, when assembling, the terminal 3 is first assembled with the insulating body 2, and its holding part 31 is connected to the through hole of the base part 23 through the interference part 311. 231 for interference retention, the abutting portion 32 is located in the groove 211 , and the tail portion 33 extends beyond the rear end surface of the base portion 23 and is arranged in two rows. Then, the shielding case 1 is installed on the insulating body 2, and the connection between the shielding case 1 and the insulating body 2 is strengthened by holding the rear edge of the top wall 11 in the recess 25 and the buckle portion 236 snapping into the opening 122. . Next, the insulating body 2 and the shielding shell 1 are installed on the circuit board 4, the tail portion 33 of the terminal 3 is inserted into the through hole 41 of the circuit board 4, and is firmly welded on the circuit board 4, and the above-mentioned pair of S-shaped grounding pieces 15 extend out of the T-shaped slot 232, and then inserted into the ground hole 42 and welded together.

Under the guidance of the side wall 22 and the guide part, the docking connector (not shown) is closely matched with the electrical connector 100 of the present invention, and the buckling part of the docking connector can be matched with the buckling hole 121 of the electrical connector 100. combined. The conductive housing of the docking connector is in electrical contact with the V-shaped grounding elastic piece 112 of the present invention, so electromagnetic interference can be eliminated by the grounding piece 15 welded on the circuit board 4 .

Claims (10)

1. An electrical connector, comprising an insulating body and a metal shielding shell; wherein the insulating body includes a base and a docking portion extending forward from the base, characterized in that: the insulating body also includes a pair of guide posts, the docking portion A first space is formed in the lateral direction between the pair of guide columns, the metal shell surrounds the above-mentioned base and the docking portion, the cross section of the docking portion in the front-rear direction is L-shaped, and a second space is formed between the guide columns , the second space is laterally aligned with the docking portion. 2. The electrical connector according to claim 1, wherein one of the guiding posts is L-shaped. 3. The electrical connector according to claim 1, wherein the other guiding post is wedge-shaped. 4. The electrical connector as claimed in claim 1, wherein the shielding shell has a pair of ground plates for electrically connecting with the circuit board on which the electrical connector is installed. 5 . The electrical connector according to claim 4 , wherein the shielding housing has a top wall, and the top wall has at least one V-shaped grounding shrapnel bent toward the receiving space for contacting with the mating electrical connector. 6 . 6. The electrical connector as claimed in claim 4, wherein the shielding housing has a bottom wall having at least one locking hole for locking the locking portion of the mating connector. 7. The electrical connector according to claim 6, wherein the bottom wall of the shielding housing is provided with an opening for locking the locking portion of the base. 8. The electrical connector as claimed in claim 5, wherein the shielding housing further comprises a pair of mounting portions for mounting to a circuit board. 9. The electrical connector according to claim 1, wherein the terminals include signal terminals and ground terminals, wherein the ground terminals are longer than the signal terminals. 10. The electrical connector according to claim 1, wherein the butting part comprises a horizontal main part and a side part vertically extending from one side of the main part, and the guide columns respectively occupy two parts of the metal shielding shell. A corner of the side portion away from the docking portion.

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