CN201336416Y - Electric connector - Google Patents

Abstract

The utility model discloses an electric connector, comprising a metal shell, an insulating body and conductive terminals, wherein, the insulating body is contained in the metal shell, and the conductive terminals are contained in the insulating body. A plurality of terminal containing grooves for containing the conductive terminals are arranged on the insulating body; and one side of the conductive terminals is provided with salient points for extruding the conductive terminals to one sides of the salient points of the containing grooves far from the conductive terminals after the conductive terminals are assembled with the insulating body. By arranging the salient points at one side of the conductive terminals, larger air gaps are formed between the conductive terminals and the terminal containing grooves so as to reduce the permittivity of medium between adjacent conductive terminals and improve the resistance value.

Description

electrical connector

【Technical field】

The utility model relates to an electrical connector, in particular to an electrical connector capable of effectively transmitting high-frequency signals.

【Background technique】

In order to meet the unique needs of the consumer electronics market, in April 2002, seven companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, and Toshiba established the HDMI (High-definition Digital Multimedia Interface; high-definition digital Multimedia Interface) Association, began to develop a new standard dedicated to digital video/audio transmission. HDMI technology can transmit high-definition video and multi-channel audio through a single connector, mainly for the next-generation consumer electronics market. According to the HDMI transmission standard, the HDMI electrical connector includes an insulating body, a conductive terminal assembled on the insulating body, a sheet metal shell covering the periphery of the insulating body, and a cable electrically connected to the conductive terminal.

An existing HDMI connector includes an insulating body with several channels on the same row and several terminals embedded in the channels, wherein the terminals include several signal terminals and several first group terminals. The terminals in the HDMI connector are plugged into the insulating body. At this time, the terminals are adjacent to the inner wall of the plastic body, and the gap between the inner wall of the plastic body and the terminals is small. However, when the impedance of the terminals is required to be high, it is difficult for this design to meet the requirements of the impedance of the terminals, and as a result, the electrical performance of the electrical connector is negatively affected.

Therefore, it is indeed necessary to improve the electrical connector to solve the above-mentioned defects in the prior art.

【Content of utility model】

The main purpose of the utility model is to provide an electrical connector with an improved terminal structure to reduce the dielectric constant between adjacent terminals.

In order to achieve the above object, the utility model adopts the following scheme: an electrical connector, including a metal shell, an insulating body accommodated in the metal shell, and a conductive terminal accommodated in the insulating body, the insulating body is provided with several A terminal receiving groove for accommodating a conductive terminal, one side of the conductive terminal is provided with a bump, and the bump pushes the conductive terminal to the terminal receiving groove after the conductive terminal is assembled in the insulating body. side.

Compared with the prior art, the utility model has the following beneficial effects: by setting a bump on one side of the terminal, a larger air gap is formed between the terminal and the receiving groove, thereby reducing the dielectric strength of the medium between adjacent terminals. constant, thereby increasing the impedance value.

【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 a perspective assembly view of the electrical connector shown in FIG. 2 .

FIG. 4 is a structural diagram of terminals in the electrical connector shown in FIG. 3 .

FIG. 5 is a cross-sectional view of the electrical connector shown in FIG. 3 along line A-A.

【Detailed ways】

1 to 5, the utility model electrical connector 100 includes a metal shell 1, an insulating body 2 housed in the metal shell 1, a circuit board 3 partially housed in the metal shell 1 and housed in the metal shell 1. The terminal module 4 in the insulating body 2 and welded to the circuit board 3 , in this embodiment, the electrical connector is a micro HDMI connector.

The metal casing 1 includes a top wall 10 , a bottom wall 11 opposite to the top wall 10 , two side walls 13 adjacent to the top wall 10 and the bottom wall 11 , and a stop piece 101 bent upward from the rear end of the top wall 10 . The connection between the top wall 10 and the blocking piece 101 is an arc portion 1013 . The two sides of the front end of the top wall 10 are recessed upwards to form a pair of protruding parts 102, and the two sides of the protruding part 102 are respectively provided with a slender through hole 1020, and a pair of rows are arranged from the rear end of the top wall 10. Wedges 103 on both sides of the top wall 10 . A pair of protruding tabs 1011 are provided on both sides of the front end of the blocking piece 101 , and a first rectangular through hole 1012 is respectively provided at the rear end of the stopping piece 101 aligned with the protruding pieces 1011 along the docking direction. The rear end of the bottom wall 11 is a protruding portion 110 protruding downwards, and a second rectangular through hole 1101 is formed from the middle of the protruding portion 110. The third rectangular through hole 1102 . Rear ends of the sidewalls 13 respectively define a notch 131 .

The insulating body 2 includes a front end docking portion 21 and an extension portion 22 at the rear end. The central part of the docking portion 21 is hollowed out to form a receiving cavity 210 for accommodating a docking connector (not shown). The center of the extension portion 22 is provided with a The receiving space 220 at the front end of the board 3 has several terminal receiving grooves 2200 formed between the receiving space 220 and the receiving cavity 210 , so that the terminal module 4 assembled from the receiving space 220 is assembled in the receiving cavity 210 . A rectangular protrusion 221 is provided above the rear end of the extension part 22 of the insulating body 2, and the connection between the rectangular protrusion 221 and the upper wall (not marked) of the extension part 22 is connected to the top wall 10 and the stop piece 101 Another arc-shaped portion 2211 matched with the arc-shaped connecting portion 1013. A pair of half-open rectangular grooves 2210 are formed downwardly from both sides of the rectangular projection 221 , and a trapezoidal projection matching the rear end of the protruding portion 110 is formed by protruding outward from the lower end of the expanding portion 22 . 222. A plurality of elongated through holes 23 are defined from a lower wall (not shown) of the insulating body 2 .

The circuit board 3 is in the shape of a panel with a narrow front and a wide rear, and the connecting portion 31 between the fitting portion 31 and the connecting portion 32 is an arc-shaped connecting portion 311 .

Please refer to FIGS. 1 to 2 and as shown in FIG. 3 , the terminal module 4 is composed of a plurality of conductive terminals 40 , and the conductive terminals 40 are divided into a first group of terminals 41 , a second group of terminals 42 and a third group of terminals 43 , the second group of terminals 42 and the third group of terminals 43 are a plurality of signal terminals, and one terminal in the first group of terminals 41 is respectively arranged next to one of the second group of terminals 42 and the third group of terminals 43 so that A differential signal terminal pair is formed.

The second group of terminals 42 , the third group of terminals 43 and the first group of terminals 41 respectively include butt joints 420 , 430 and 410 , and extend backward from the butt joints 420 , 430 and 410 to form holding parts 421 , 431 and 411 . The holding parts 421, 431 and 411 are respectively provided with a number of barbs (not marked) to firmly hold the conductive terminal 40 in the insulating body 2, and the holding parts 421, 431 and 411 are respectively provided with a number of bumps 423 , 433 and 413 , the bumps 423 , 433 and 413 are arranged on one side of the conductive terminal 40 respectively. And extending backward from the holding parts 421, 431 and 411 respectively to form tails 422, 432 and 412, the tails 432 of the third group of terminals 43 are wider than the tails 422 of the second group of terminals 42, the first group of terminals The tail portion 412 of 41 is formed by bending and extending from the lower edge of the end of the holding portion 411 , and the tail portion 432 of the third group of terminals 43 is formed by bending and extending from the upper edge of the end of the holding portion 431 . The abutting parts 420, 430, 410 and holding parts 421, 431, 411 of the second group of terminals 42, the third group of terminals 43 and the first group of terminals 41 are arranged in parallel in a row, and the second group of terminals 42, the first group of terminals The tails 422, 432 of the three groups of terminals 43 and the tails 412 of the first group of terminals 41 are arranged in two rows up and down, and the tails 422, 432 of the second group of terminals 42 and the third group of terminals 43 are arranged in the upper row. The tails 412 of one group of terminals 41 are arranged in the lower row.

When assembling, first insert the conductive terminal 40 in the terminal module 4 into the terminal receiving groove 2200 from the receiving space 220 of the insulating body 2, so that the tails 422, 432 of the second group of terminals 42 and the third group of terminals 43 are aligned with the second group of terminals 42 and 432. The tail portion 412 of one group of terminals 41 protrudes from the rear of the insulating body 2, and then the circuit board 3 is plugged into the tails 422, 432 of the second group of terminals 42 and the third group of terminals 43 on the upper row and the first group of terminals on the lower row. Between the tails 412 of the group of terminals 41 , solder the tails 422 , 423 of the second group of terminals 42 , the third group of terminals 43 and the tail 412 of the first group of terminals 41 to the circuit board 3 at the same time. Finally, the metal shell 1 is assembled on the insulating body 2, so that the arc-shaped part 2211 on the insulating body 2 snaps and matches with the arc-shaped connecting portion 1013 of the metal shell 1, and at the same time, the protruding block 1011 snaps on the half-open Rectangular slot 2210 of the insulator body 2 is fastened in the metal shell 1 , and at the same time, the connecting portion 311 of the circuit board 3 is snapped into the arc-shaped notch 131 of the metal shell 1 .

The main feature of the utility model electrical connector is that the same side of the conductive terminal 40 is provided with several bumps 423, 433 and 413. 40 is squeezed toward one side of the terminal receiving groove 2200, so that there is a certain air gap between the conductive terminal 40 and the terminal receiving groove 2200, thereby reducing the dielectric constant of the medium between adjacent terminals, thereby increasing the impedance value.

Claims (10)

1. electric connector, comprise metal shell, be contained in insulating body in the metal shell, be contained in the conducting terminal in the insulating body, described insulating body is provided with some terminal containing slots of accommodating conducting terminal, it is characterized in that: a side of described conducting terminal is provided with salient point, and described salient point presses to conducting terminal the side away from the described salient point of conducting terminal of terminal containing slot after conducting terminal is assembled in insulating body.

2. electric connector as claimed in claim 1, it is characterized in that: described conducting terminal comprises the docking section, holding parts that forms and the afterbody that extends back and form from holding parts extend back from the docking section, described docking section and described holding parts are in the same plane, and described salient point is arranged at a side on the plane of described holding parts.

3. electric connector as claimed in claim 2, it is characterized in that: described conducting terminal comprises first group of terminal, second group of terminal and the 3rd group of terminal, a terminal in described first group of terminal respectively with described second group of terminal, the 3rd group of terminal in a next-door neighbour arrange to form difference signal terminal right.

4. electric connector as claimed in claim 3 is characterized in that: described first group of tail portion of terminal forms from the terminal lower limb bending of corresponding holding parts extension, and described the 3rd group of tail portion of terminal bends to extend from the terminal top edge of corresponding holding parts and form.

5. electric connector as claimed in claim 3, it is characterized in that: the docking section and the holding parts of described second group of terminal, the 3rd group of terminal and first group of terminal are positioned at several rows of row, described second group of terminal, the 3rd group of tail portion of terminal and first group of tail portion of terminal are positioned at upper and lower two rows and arrange, described second group of terminal, the 3rd group of tail portion of terminal are positioned at and arrange, and described first group of tail portion of terminal is positioned at down arranges.

6. electric connector as claimed in claim 1, it is characterized in that: described electric connector also comprises printed circuit board (PCB), described printed circuit board (PCB) is installed between second group of terminal, the 3rd group of terminal and the first group of tail portion of terminal, and described printed circuit board (PCB) welds mutually with the afterbody of described conducting terminal.

7. electric connector as claimed in claim 1 is characterized in that: described insulating body comprises front end docking section and extension, rear end, and the middle body of described docking section is hollowed out to form with host cavity, and described host cavity is connected with described terminal containing slot.

8. electric connector as claimed in claim 7 is characterized in that: the top, rear end of the extension of described insulating body is provided with rectangle projection, the curved shape of connecting portion of the upper wall of described rectangle projection and extension.

9. electric connector as claimed in claim 1, it is characterized in that: described metal shell comprises roof, the diapire relative with roof, in abutting connection with the two side of roof and diapire and by the rear end of the roof retaining piece that extends of bending upwards, the curved shape in the junction of described roof and retaining piece.

10. electric connector as claimed in claim 9, it is characterized in that: the front end both sides of described retaining piece are provided with a pair of outstanding lug downwards, the both sides of described rectangle projection are recessed to form a pair of half-open rectangular channel downwards, and described lug and half-open rectangular channel cooperatively interact.

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