CN202196892U - Electric connector and combination thereof - Google Patents

Abstract

An electrical connector and a combination thereof, comprising a first insulating body, a plurality of first terminals fixed to the first insulating body, and a first shell shielded outside the first insulating body, the insulating body having a tongue plate and a plurality of retaining grooves arranged on the tongue plate, the conductive terminal comprising a contact portion and a main body extending from the contact portion, the main body being fixed in the retaining groove, the contact portion being thinner than the main body. Changing the thickness of the terminal contact portion can avoid the phenomenon of impedance mutation at the docking point.

Description

Electrical connectors and combinations thereof

【Technical field】

The utility model relates to an electric connector and a combination thereof.

【Background technique】

A conventional electrical connector includes an insulating body, a first terminal fixed on the insulating body, and a metal shell covering the outside of the insulating body and the first terminal. When transmitting a signal (especially a high-frequency signal), the contact portion of the first terminal cooperates with the abutting portion of the second terminal. In the contact area, since the contact portion partially overlaps with the abutting portion, the thickness increases, forming a thickness difference with other areas. The size of the characteristic impedance is related to the thickness of the transmission medium, so the phenomenon of impedance mutation is prone to occur.

Therefore, there is a need for an electrical connector that can solve the above problems.

【Content of utility model】

The purpose of the utility model is to provide an electrical connector and its combination which can reduce the sudden change of impedance.

In order to achieve the above object, a technical solution of the utility model is: an electrical connector, including a first insulating body, a plurality of first terminals fixed on the first insulating body, and a first shell shielding the outside of the first insulating body The insulating body has a tongue plate and a plurality of holding grooves arranged on the tongue plate. The conductive terminal includes a contact portion and a main body portion extending from the contact portion. The main body portion is fixed in the holding groove. The contact portion is thinner than the main body portion.

Another technical solution is: an electrical connector combination, which includes an electrical connector and a docking connector that is docked with it. The electrical connector includes a first insulating body, a number of first terminals fixed to the first insulating body, and a shielding In the first housing outside the first insulating body, the conductive terminal includes a contact portion and a main body portion extending from the contact portion, and the docking connector includes a second insulating body, a second terminal fixed to the insulating body and shielded by the second insulating body The second housing, the second terminal includes a docking portion and a holding portion extending from the docking portion, the contact portion and the docking portion abut and fit with each other, and the thickness of the contact portion and the docking portion becomes thinner relative to the main body portion and the holding portion extending therefrom .

Compared with the prior art, the utility model has the following beneficial effects: changing the thickness of the contact part of the terminal can avoid the sudden change of impedance at the butt joint.

【Description of drawings】

Fig. 1 is a perspective view of the electrical connector assembly of the present invention.

FIG. 2 is an exploded view of FIG. 1 .

Fig. 3 is a three-dimensional exploded view of the electrical connector of the present invention.

Fig. 4 is a three-dimensional exploded view of the docking connector of the present invention.

Fig. 5 is a schematic diagram of butt jointing of combined terminals of the electrical connector of the present invention.

【Detailed ways】

1 to 5 disclose an electrical connector assembly 100 of the present invention.

Please refer to FIG. 1 and FIG. 2 , the electrical connector assembly 100 includes a mating connector 200 and an electrical connector 300 . In this embodiment, the docking connector 200 is electrically connected to the cable 400 . The cover 500 is integrally formed, part of which is sheathed on the cable to form a stress relief portion 51 , and its base 52 covers the docking connector, and only the plug end 20 of the docking connector protrudes from the front of the cover 500 .

Referring to FIG. 3 , the electrical connector 300 includes a first insulating body 31 , a plurality of first terminals 32 fixed on the first insulating body, and a first housing 33 shielded outside the first insulating body. The first insulating body 31 includes a base 311 and a tongue 312 extending forward from the base. The tongue plate is in an upside-down U shape, and a plurality of retaining grooves 3121 for receiving the first terminals are provided on the upper and lower surfaces thereof.

The first terminal 32 includes a contact portion 321 , a main body 322 extending from the contact portion, and a welding portion 323 vertically extending from the main body. The main body is in an “L” shape. The horizontal part of the aforementioned main body part 322 is installed in the holding groove 3121 , and the vertical part leans against the rear end of the base 311 . The barbs on the main body interfere with the retaining groove 3121 . Especially referring to FIG. 2 , the welding portion 323 is exposed at the rear end of the first insulating body 31 .

The first housing 33 is square, and has a receiving space 331 for receiving the first insulating body, and the receiving space 331 is surrounded by four end-to-end peripheral walls 332 . The upper and lower peripheral walls 332a are provided with a plurality of elastic arms 3321 formed by tearing into the receiving space, and the elastic arms 3321 are used for clamping the docking connector 200 . Two pairs of fixing legs 3322 extend downward from the side wall 332b for fixing the electrical connector 200 to a printed circuit board (not shown). The first insulating body 31 has a plurality of mating surfaces 301 formed on the base 311 (ie, upper and lower surfaces and two sides of the base), and at least one mating surface 301 is provided with a protruding interference portion 302 . The interference portion 302 cooperates with the peripheral wall 332 of the first housing to prevent the first insulating body 31 from detaching from the first housing 33 . An inclined guide portion 303 is also provided at the front end of the interference portion 302 to facilitate the assembly of the first housing 33 . In a preferred embodiment, the upper surface and the two side surfaces are provided with interference parts, and the interference parts are arranged symmetrically, so as to ensure uniform distribution of the received stress. One end of the first insulating body 31 is further provided with a buckle portion 304 protruding from the mating surface. The shielding case has a notch disposed on the upper wall 332a, and the buckle portion fits into the notch. In this embodiment, the buckle portion is disposed at the rear end of the matching surface 301 (upper surface of the base) on the base. An abutting portion 313 abutting against the lower peripheral wall 332 a extends from the lower surface of the base.

Referring to FIG. 4 , the mating connector 200 includes a second insulating body 21 , a second terminal 22 fixed on the second insulating body, and a second shell 23 covering the outside of the second insulating body and the second terminal. The second insulative body 21 is roughly square, and has a U-shaped docking cavity 211 and two rows of terminal grooves 212 connected with the docking cavity.

The second terminal 22 includes a docking portion 221 , a holding portion 222 extending from the docking portion 221 , and a connecting portion 223 extending from the holding portion. The holding portion 222 is accommodated in the terminal groove 212 , and the barbs provided on the holding portion fit into the terminal groove 212 , so that the docking portion 221 protrudes into the docking cavity, and the connecting portion is electrically connected to the cable 400 .

The second housing 23 is composed of an upper housing 231 and a lower housing 232 . The front end portion 2321 of the lower case 232 is closed and forms the accommodating space 201 for accommodating the second insulating body 21 . The upper casing 231 includes an upper wall 2311 and two side walls 2312 extending vertically downward from both sides of the upper wall, and the rear end portion 2322 of the lower casing consists of a bottom wall 2323 and vertical walls extending vertically upward from both sides of the bottom wall. 2324 composed. The front end of the upper wall 2311 is provided with several buckle portions 2313, which can cooperate with the buckle holes 2325 provided on the upper surface of the front end portion 2321 of the lower housing to fix the upper and lower housings in the front-rear direction. And the vertical wall 2324 is provided with a pair of buckle holes 2326 and a square hole 2327 arranged between the buckle holes, which are respectively matched with a pair of buckle pieces 2314 provided on the side wall 2312 and the protrusions between the buckle pieces. 2315 to fix the upper and lower housings in the up and down direction. Adjacent to the rear end of the second insulating body, a protrusion 213 protruding from its upper surface is provided. The protrusion and the front end 2321 of the lower housing are provided with a fastening hole 2328 adjacent to the buckle hole 2325 to realize the second insulating body 21. Positioning with the second housing 23 .

Referring to FIG. 5 in particular, the first terminal contact portion 321 is in the shape of a flat plate, and the second terminal abutting portion 221 is in the shape of an elastic protrusion. The contact portion 321 and the docking portion 221 abut and fit with each other, so as to realize the docking between the docking connector 200 and the electrical connector 300 . The contact portion and the docking portion become thinner respectively, that is, the thickness of the first terminal main body portion 322 is greater than that of the contact portion 321 , and the thickness of the second terminal holding portion 222 is greater than that of the docking portion 221 . In this way, when the high-frequency signal is transmitted, the thickness of the joint (that is, the sum of the thicknesses of the contact portion 321 and the joint portion 221) is not much different from the thickness of each of the first and second terminals, and the characteristic impedance is associated with terminal thickness. That is to say, there will be no sudden change in impedance during signal transmission. Especially when the terminal width can no longer be changed, the change of thickness can adjust the impedance.

The thickness of the first terminal welding portion 323 is smaller than that of the main body portion, and the thickness of the second terminal connecting portion 223 is also thinner than that of the holding portion 222 .

Claims (8)

1. electric connector; Comprise first insulating body, be fixed in some the first terminals of first insulating body and be shielded in first housing in first insulating body outside; Insulating body has hyoplastron and is arranged at some holding slots of hyoplastron; Conducting terminal comprises contact site and the main part that extends from contact site, and main part is fixed in the holding slot, it is characterized in that: said contact site is than the attenuation of main part thickness.

2. electric connector as claimed in claim 1 is characterized in that: the thickness of said weld part is than the main part attenuation.

3. electric connector as claimed in claim 2 is characterized in that: said first insulating body has the mating surface corresponding with first housing, and at least one mating surface is provided with the interference part of overshooting shape.

4. electric connector as claimed in claim 3 is characterized in that: said interference part front end is provided with guide part.

5. electric connector as claimed in claim 4 is characterized in that: said first insulating body, one end is provided with the clamping part that protrudes in mating surface, the then corresponding breach that runs through its end face that is provided with of shielding casing.

6. electric connector combination; It comprises electric connector and the butt connector that docks with it; Electric connector comprises first insulating body, be fixed in some the first terminals of first insulating body and be shielded in first housing in first insulating body outside; Insulating body has hyoplastron and is arranged at some holding slots of hyoplastron, and conducting terminal comprises contact site and the main part that extends from contact site, and main part is fixed in the holding slot; Butt connector comprises second insulating body, be fixed in second terminal of insulating body and be shielded in second housing of second insulating body; The plurality of terminals groove that second insulating body has the butt joint chamber and is communicated with the butt joint chamber, second terminal comprise docking section and the holding parts that extends from the docking section, and holding parts is fixed in the terminal groove; Contact site cooperates with the mutual butt in docking section, it is characterized in that: said contact site and docking section be the main part and the attenuation of holding parts thickness of its extension relatively.

7. electric connector combination as claimed in claim 6, it is characterized in that: the contact site of said the first terminal is the elastic protrusion shape, and the docking section of second terminal is tabular.

8. electric connector combination as claimed in claim 7 is characterized in that: said the first terminal comprises that autonomous body extends and the weld part of thickness attenuation, and second terminal comprises the connecting portion from holding parts extension and thickness attenuation.

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