CN219067278U - Electric connector - Google Patents

Abstract

An electrical connector, comprising: the at least one conductive module comprises an insulator, a grounding terminal accommodated in the insulator, a signal terminal and a shielding sheet positioned at one side of the grounding terminal, wherein at least one grounding terminal is positioned between two signal terminals; the grounding terminal comprises a contact arm, a body part and a shielding part, wherein the shielding part is formed by extending from the body part along the up-down direction; the shielding sheet comprises a main body part and an extension part which extends forwards from the main body part to protrude out of the insulator; the shielding part comprises a guide connection part, the guide connection part protrudes forwards to extend out of the insulator, the extension part comprises a clamping groove, and the guide connection part is clamped in the clamping groove to electrically conduct the shielding sheet and the grounding terminal.

Description

Electric connector

[ field of technology ]

The present utility model relates to an electrical connector, and more particularly, to an electrical connector capable of improving shielding performance of the electrical connector.

[ background Art ]

Chinese application number CN201711017265.2 discloses an electrical connector, which includes a plurality of terminal modules and a plurality of conductive members, each conductive member including a plurality of spring plates electrically connected to a ground terminal in the terminal module and a fixing member for fixing the ground terminal;

in the above structure, there are the following problems:

1. the elastic piece in each conductive piece is formed by stamping from the plate-shaped main body, so that a notch is necessarily formed at the position of the conductive piece corresponding to the elastic piece, and the shielding effect of the conductive piece is poor;

2. each conductive piece is elastically abutted with the grounding terminal through the elastic piece so as to achieve the conduction of the grounding path, the contact of the conductive piece with the grounding terminal is ensured, the coplanarity of a plurality of elastic pieces is ensured, and thus the requirement on the precision of the conductive piece is too high in the production and manufacturing process, and the production cost is increased;

3. the through holes are formed in the fixing piece in the terminal module corresponding to the plurality of elastic pieces for exposing the grounding terminal, and the plurality of elastic pieces need to pass through the through holes to be abutted with the grounding terminal, so that the complexity of a die for forming the fixing piece is high, the cost of the die is high, and the production cost is increased finally.

Therefore, there is a need to design a new electrical connector to overcome the above-mentioned problems.

[ utility model ]

The utility model aims to provide an electric connector, wherein a position for conducting and connecting a shielding sheet and a grounding terminal is arranged in front of the front end face of an insulator, so that the shielding sheet can realize full shielding, and the shielding performance of the electric connector is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electrical connector, comprising: the conductive module comprises an insulator, a grounding terminal, a signal terminal and a shielding sheet, wherein the grounding terminal and the signal terminal are accommodated in the insulator, the shielding sheet is positioned on one side of the grounding terminal, and at least one grounding terminal is positioned between two signal terminals; the grounding terminal comprises a contact arm, a body part and a shielding part, wherein the shielding part is formed by extending from the body part in the up-down direction, and the contact arm extends forwards from the body part to protrude out of the insulator; the shielding sheet comprises a main body part and an extension part which extends forwards from the main body part to protrude out of the insulator; the shielding part comprises a guide connection part, the guide connection part protrudes forwards to extend out of the insulator, the extension part comprises a clamping groove, and the guide connection part is clamped in the clamping groove to electrically conduct the shielding sheet and the grounding terminal.

Further, the upper surface of the guide connection part is not higher than the upper surface of the insulator, the main body part is arranged above the insulator in a covering mode, the extension part is formed by downwards bending and extending from the front end of the main body part, and the clamping position of the clamping groove and the guide connection part is not higher than the upper surface of the insulator.

Further, the extension portion is including being located two spacing portions of joint groove left and right sides, connect portion joint in the joint inslot, two spacing portions correspond spacing connect the displacement of portion along left and right directions, the insulator forward extension form a step portion, connect the lower extreme cladding of portion in the step portion, just step portion forward surpass connect the portion, connect the rear end cladding of portion in the insulator, just the insulator upwards surpasss connect the portion, the extension portion is followed upper and lower direction bending extension from the front end of main part and is formed, just covers and locates the front end of insulator, and along the fore-and-aft direction, the extension portion with the front end of insulator keeps off each other.

Further, the electrical connector further includes a housing, the housing includes a receiving cavity, the conductive module is received in the receiving cavity, a step portion is formed by extending forward from a front end of the insulator, the extending portion and the conductive portion do not protrude forward beyond the step portion in a front-rear direction, and the contact arm protrudes forward beyond the step portion.

Further, a step portion is formed by extending forward from the front end of the insulator, the main body portion is covered above the insulator, the extension portion is formed by bending and extending downwards from the main body portion, the extension portion is covered in front of the insulator, and the extension portion is located above the step portion, wherein the step portion and the extension portion are arranged at intervals along the up-down direction.

Further, the extension part further comprises a groove communicated with the clamping groove along the up-down direction, the clamping groove is clamped with the guide connection part, and the groove is positioned above the guide connection part.

Further, the shielding sheet comprises at least one lug part, the lug part comprises a buckling hole and at least one limiting block, the limiting block is formed by protruding into the buckling hole, the insulator comprises a concave portion and at least one clamping block located in the concave portion, the shielding sheet is covered above the insulator, the clamping block is located in the buckling hole, the lug part is located in the concave portion, and the limiting block stops displacement of the clamping block.

Further, the body part comprises a first part and a second part which is arranged at an angle with the first part, wherein an included angle between the inner side surface of the first part and the inner side surface of the second part is smaller than 180 degrees, and an included angle between the outer side surface of the first part and the outer side surface of the second part is larger than 180 degrees; the shielding part comprises a first shielding part, a second shielding part, a third shielding part and a fourth shielding part, wherein the first shielding part and the second shielding part are positioned at the left side and the right side of the first part, the third shielding part and the fourth shielding part are positioned at the same side of the left side and the right side of the body part, the second shielding part and the fourth shielding part are positioned at the other side of the left side and the right side of the body part, the first shielding part and the fourth shielding part respectively extend in directions deviating from the inner side surface of the first part and the inner side surface of the second part, and the second shielding part and the third shielding part respectively extend in directions deviating from the outer side surface of the first part and the outer side surface of the second part.

Further, a gap between the first shielding portion and the fourth shielding portion is smaller than a gap between the second shielding portion and the third shielding portion as viewed in the left-right direction.

Further, the signal terminals include a differential signal pair between the two ground terminals, the differential signal pair including a buried portion located in the insulator and an exposed portion protruding forward from the insulator, the exposed portion having a width in a left-right direction smaller than that of the buried portion, the shielding portion being located on at least one of left and right sides of the buried portion.

Further, the guide connection portion and the extension portion are both plate-shaped, the extending direction of the plate surface of the guide connection portion and the extending direction of the plate surface of the extension portion are perpendicular to each other, and a part of the guide connection portion is located in front of the extension portion.

Further, the insulator comprises a step part formed by extending forwards, the guide connection part comprises a resonance adjusting area, the resonance adjusting area is entirely covered in the step part, and the width of the resonance adjusting area is not more than one third of the width of the guide connection part along the up-down direction.

Compared with the prior art, the utility model has the following beneficial effects:

the electric connector comprises: each conductive module comprises an insulator, a plurality of grounding terminals accommodated in the insulator, a plurality of signal terminals and a shielding sheet positioned at one side of the grounding terminals, wherein one grounding terminal is positioned between two signal terminals; each of the ground terminals includes a contact arm, a body portion, and a shielding portion extending from the body portion in a vertical direction, the contact arm extends forward from the body portion to protrude from the insulator, the shielding plate includes a main body portion and an extending portion extending forward from the main body portion to protrude from the insulator, the conductive portion and the extending portion are both protruded forward from the insulator and are connected to each other by conductive connection, thereby avoiding weakening of shielding effect of the shielding plate due to a large number of through holes being opened at the main body portion of the shielding plate, being beneficial to signal transmission, and further, since the conductive portion and the extending portion are identical to the extending direction of the contact arm of the ground terminal, i.e., are both protruded forward from the top surface of the insulator, in fact, there is no additional space for accommodating the conductive portion and the main body portion, in other words, the conductive portion and the extending portion are protruded forward from the periphery of the contact arm of the insulator, and the conductive portion are not provided with additional space, and the conductive portion is not used for making full use of the space, and the beneficial for implementing the utility model is that there is a space around the connector; the shielding part comprises a guide connection part, the guide connection part protrudes forwards to extend out of the insulator, the extension part comprises a clamping groove, the guide connection part is clamped in the clamping groove to electrically conduct the shielding piece and the grounding terminal, the guide connection part is contained in the clamping groove to achieve electrical conduction, the requirement on the precision of the shielding piece in production is low, the insulator does not need to be designed to be too complex, a die for forming the insulator is simple, and the production and manufacturing cost is reduced.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of a conductive module of a housing of an electrical connector according to the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a partially exploded perspective view of one of the conductive modules of FIG. 1;

FIG. 4 is a perspective view of one of the ground terminals and one of the differential signal pairs of FIG. 3;

FIG. 5 is a perspective view of one ground terminal and one differential signal pair of FIG. 4 from another perspective;

FIG. 6 is a left side view of FIG. 3;

FIG. 7 is a left side view of a conductive module;

fig. 8 is a cross-sectional view of the electrical connector along the front-rear direction;

FIG. 9 is an enlarged view of a portion of FIG. 8;

fig. 10 is a partial cross-sectional view of the electrical connector in the left-right direction;

fig. 11 is a partial cross-sectional view of the electrical connector in the left-right direction.

Reference numerals of the specific embodiments illustrate:

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[ detailed description ] of the utility model

For a better understanding of the utility model with objects, structures, features, and effects, the utility model will be described further with reference to the drawings and to the detailed description.

The electrical connector 100 of the present utility model defines the right-left direction as the positive X-axis direction, the front-back direction as the positive Y-axis direction, and the up-down direction as the positive Z-axis direction.

As shown in fig. 1 to 11, the electrical connector 100 of the present utility model includes a housing 1 and a plurality of conductive modules 2 accommodated in an accommodating cavity 11 of the housing 1, wherein the plurality of conductive modules 2 are stacked and arranged along an up-down direction, in this embodiment, the number of the conductive modules 2 is four, wherein two conductive modules 2 adjacent to each other are mutually matched and electrically connected to the same butt-joint circuit board, and of course, in other embodiments, the conductive modules 2 may be set to other numbers according to requirements.

As shown in fig. 3, 8 and 11, each of the conductive modules 2 includes an insulator 21, a plurality of ground terminals 23 accommodated in the insulator 21, a plurality of signal terminals 24 and a shielding plate 22, wherein the ground terminals 23 and the signal terminals 24 are arranged in a row along the left-right direction, the shielding plate 22 is located above the ground terminals 23 and the signal terminals 24, and in this embodiment, the shielding plate 22 is assembled to the insulator 21, and in other embodiments, the shielding plate 22 may be integrally injection molded with the insulator 21; two signal terminals 24 in a row are formed as a differential signal pair a for transmitting a differential signal, and one ground terminal 23 is disposed between every two differential signal pairs a, although in other embodiments, the signal terminals 24 may transmit single-ended signals, and one or more ground terminals 23 are disposed between every two signal terminals 24.

As shown in fig. 2, 3 and 7, the front end of the insulator 21 is extended forward to form a step 211, and the step 211 is not formed to extend forward over the entire front end surface 214 of the insulator 21, but is formed to extend forward under the front end surface 214 of the insulator 21, so as to make the upper portion of the front end surface 214 of the insulator 21 clear, thereby accommodating the grounding terminal 23 and the conductive structure of the shielding plate 22, so as to facilitate miniaturization of the electrical connector 100, but in other embodiments, the step 211 may be provided to extend forward from the entire front end surface 214 of the insulator 21 or extend beyond the insulator 21 in the up-down direction without excessively controlling the miniaturization of the electrical connector 100.

As shown in fig. 4, 5 and 9, each of the ground terminals 23 includes a contact arm, a body portion 231, and a plurality of shielding portions 232 extending from the body portion 231 in the up-down direction, each of the shielding portions 232 includes a guide portion 2325 protruding forward beyond the front end face 214 of the insulator 21, the contact arm extending forward from the body portion 231 to protrude beyond the step portion 211; the upper surface of the guiding portion 2325 is not higher than the upper surface of the insulator 21, the lower end of the guiding portion 2325 is wrapped in the step portion 211, the step portion 211 extends forward beyond the guiding portion 2325, the rear end of the guiding portion 2325 is wrapped in the insulator 21, and the insulator 21 extends upward beyond the guiding portion 2325, so that the guiding portion 2325 can be supported by a stronger supporting force, and of course, in other embodiments, the front end of the guiding portion 2325 may also be arranged flush with the front end of the step portion 211.

As shown in fig. 4 to 6, the body 231 includes a first portion 2311 and a second portion 2312 disposed at an angle with respect to the first portion 2311, wherein an included angle between an inner side 231a of the first portion 2311 and an inner side 231a of the second portion 2312 is smaller than 180 degrees, and an included angle between an outer side 231b of the first portion 2311 and an outer side 231b of the second portion 2312 is larger than 180 degrees; the shielding part 232 includes a first shielding part 2321, a second shielding part 2322 and a third shielding part 2323 and a fourth shielding part 2324 located at left and right sides of the first portion 2311, the first shielding part 2321 and the third shielding part 2323 are located at the same side of the left and right sides of the body 231, the second shielding part 2322 and the fourth shielding part 2324 are located at the other side of the left and right sides of the body 231, wherein the first shielding part 2321 and the fourth shielding part 2324 extend in directions away from the inner side 231a of the first portion 2311 and the inner side 231a of the second portion 2312, the second shielding part 2322 and the third shielding part 2323 extend in directions away from the outer side 231b of the first portion 2311 and the outer side 231b of the second portion 2312, respectively, and further extend in directions to complement the gap 2323 between the shielding part 2322 and the fourth shielding part 2324.

As shown in fig. 3 to 5, each of the differential signal pairs a includes a buried portion 241 located in the insulator 21 and an exposed portion 242 protruding forward from the insulator 21, the exposed portion 242 having a width smaller than that of the buried portion 241 in the left-right direction, the shielding portion 232 being located on at least one of the left and right sides of the buried portion 241, and the contact arm of the ground terminal 23 having a width smaller than that of the exposed portion 242 in the left-right direction.

As shown in fig. 2, 7 and 10, the shielding plate 22 includes a main body 221 and an extending portion 223 extending forward from the main body 221 to protrude from the insulator 21, the main body 221 is disposed above the insulator 21, the extending portion 223 is formed by bending and extending downward from a front end of the main body 221 so as to be disposed in front of the insulator 21, the extending portion 223 includes a plurality of engaging grooves 2231, a recess 2232 communicating with the engaging grooves 2231 in an up-down direction, and two limiting portions 2233 located on left and right sides of the engaging grooves 2231, the shielding plate 22 is provided with a recess 2232 communicating with each of the engaging grooves 2231 at a position of each of the engaging grooves 2231, in this embodiment, in order to further precisely position the insulator 21 and the shielding plate 22, the extending portion 223 and the front end of the insulator 21 are blocked each other in a front-rear direction, and of course, in other embodiments, the extending portion 223 and the insulator 21 may be provided with other spacing therebetween in order to further position the insulator 21; further, the extension 223 is located above the step 211 and spaced apart from the step 211, so that the step 211 does not prevent the shield plate 22 from being assembled to the insulator 21.

As shown in fig. 3 and 7, the shielding plate 22 further includes a plurality of ears 222 disposed on the left and right sides thereof, each ear 222 includes a fastening hole 2221 and two limiting blocks 2222, the two limiting blocks 2222 are formed to protrude into the fastening holes 2221, the insulator 21 includes a plurality of recesses 213 and a clamping block 212 disposed in each recess 213, after the shielding plate 22 is assembled to the insulator 21, one clamping block 212 is disposed in one fastening hole 2221, one ear 222 is disposed in one recess 213, in this embodiment, the ears 222 are disposed on the left and right sides of the shielding plate 22, so that the limiting blocks 2222 stop displacement of the clamping blocks 212 in the front-rear direction, and in other embodiments, the ears 222 and the clamping blocks 212 may be disposed selectively in front-rear of the shielding plate 22, so that the limiting blocks 2 stop displacement of the clamping blocks 212 in the left-right direction, and the recesses 212, 213, 2221 may be adjusted according to the requirements.

As shown in fig. 2, 9 and 11, when the conductive portion 2325 is clamped in the clamping groove 2231 so as to electrically connect the shielding plate 22 and the ground terminal 23, the groove 2232 is located above the conductive portion 2325, and the two limiting portions 2233 respectively limit the displacement of the conductive portion 2325 in the left-right direction, and the clamping position of the clamping groove 2231 and the conductive portion 2325 is not higher than the upper surface of the insulator 21; in addition, in this embodiment, the guiding portion 2325 and the extending portion 223 are both in a plate shape, and the plate extending direction of the guiding portion 2325 and the plate extending direction of the extending portion 223 are perpendicular to each other, that is, the plate extending direction of the guiding portion 2325 is a front-back direction, the plate extending direction of the extending portion 223 is a left-right direction, a portion of the guiding portion 2325 is located in front of the extending portion 223, the guiding portion 2325 further includes a resonance adjusting area 2325a, the resonance adjusting area 2325a is entirely wrapped in the step portion 211, and the width of the resonance adjusting area 2325a does not exceed one third of the width of the guiding portion 2325 along the up-down direction.

In summary, the connector of the utility model has the following advantages:

1. the electrical connector 100 includes: a plurality of conductive modules 2, each conductive module 2 including an insulator 21, a plurality of ground terminals 23 accommodated in the insulator 21, a plurality of signal terminals 24, and a shielding plate 22 positioned at one side of the ground terminals 23, one of the ground terminals 23 being positioned between two of the signal terminals 24; each of the ground terminals 23 includes a contact arm, a body portion 231, and a shielding portion 232 formed by extending from the body portion 231 in the up-down direction, the contact arm extends forward from the body portion 231 to protrude the insulator 21, the shielding plate 22 includes a body portion 221 and an extending portion 223 extending forward from the body portion 221 to protrude the insulator 21, the conductive portion 2325 and the extending portion 223 are both protruded forward from the insulator 21 and are connected to each other, so that the attenuation of the shielding effect of the shielding plate 22 caused by the provision of a large number of through holes at the body portion 221 of the shielding plate 22 is avoided, and further, since the extending direction of the conductive portion 2325 and the extending portion 223 is the same as the extending direction of the contact arm of the ground terminal 23, i.e., both extend forward from the body portion 221 to protrude the top surface of the insulator 21, the electrical connector 100 of the present utility model is actually not additionally provided with a space in the forward-backward direction to accommodate the conductive portion 2325 and the extending portion 223, and the insulator 21 is additionally provided with a space in the future, and the present utility model is further reduced in size, and the electrical connector is further provided with a beneficial effect by making use of the space around the insulator 21, and the present utility model is further provided with the beneficial effects that the electrical connector is further provided with the insulator 21 is additionally provided with a space that the conductive space is not provided with the conductive portion and the insulator 21; the shielding portion 232 includes a guiding portion 2325, the guiding portion 2325 protrudes forward to extend out of the insulator 21, the extending portion 223 includes a clamping groove 2231, the guiding portion 2325 is clamped in the clamping groove 2231 to electrically connect the shielding plate 22 and the grounding terminal 23, and the guiding portion 2325 is accommodated in the clamping groove 2231 to electrically connect the shielding plate 22, so that the requirement on the precision of the shielding plate 22 is not high in production, the insulator 21 is not too complex to design, and a mold for forming the same is also simpler, thereby reducing the production and manufacturing costs.

2. The upper surface of the conductive portion 2325 is not higher than the upper surface of the insulator 21, the extending portion 223 is formed by bending and extending downwards from the front end of the main body 221, the position of the clamping slot 2231 clamped with the conductive portion 2325 is not higher than the upper surface of the insulator 21, so that the volume of the electrical connector 100 in the vertical direction cannot be increased because of the need of adding space for electrically conducting the shielding sheet 22 and the grounding terminal 23, the structure required for achieving electrical conduction is accommodated, the miniaturization of the electrical connector 100 is satisfied, the position of the clamping slot 2231 clamped with the conductive portion 2325 is not higher than the upper surface of the insulator 21, and the matching between the conductive portion 2325 and the clamping slot 2231 can also be protected by the insulator 21, so that the shielding effect is prevented from being influenced due to poor contact caused by collision or vibration.

3. The extension portion 223 is formed by bending and extending from the front end of the main body 221 in the up-down direction, and the extension portion 223 is covered on the front end of the insulator 21, so that the front end of the insulator 21 can be further shielded, and the shielding effect is optimized; the front ends of the extension 223 and the insulator 21 are stopped against each other in the front-rear direction to limit the position between the shield plate 22 and the insulator 21; the lower end and the rear end of the guiding and connecting portion 2325 are wrapped in the step portion 211 and the insulator 21, the step portion 211 extends forward beyond the guiding and connecting portion 2325, the insulator 21 extends upward beyond the guiding and connecting portion 2325, the two limiting portions 2233 correspondingly limit the arrangement of the structure such as displacement of the guiding and connecting portion 2325 along the left-right direction, and the like, so that the guiding and connecting portion 2325 can be supported by the shielding sheet 22 and the insulator 21, deformation cannot be easily damaged, and the service life of the electric connector 100 is prolonged.

4. When the conductive module 2 is installed in the housing 1, the extending portion 223 and the conductive connection portion 2325 protrude forward to protrude out of the insulator 21, so that the extending portion 223 and the conductive connection portion 2325 may touch the housing 1 to generate undesired deformation during the installation process, thereby causing the extending portion 223 and the conductive connection portion 2325 to be separated, and the insulator 21 further extends forward to have the step portion 211, so that the extending portion 223 and the conductive connection portion 2325 may be guided by the step portion 211 during the process of assembling the conductive module 2 to the housing 1, and may not be easily deformed, thereby improving the yield of the electrical connector 100 in the production and manufacturing process.

5. The extending portion 223 extends downward from the main body 221 to reduce the height of the electrical connector 100 in the vertical direction, and further, the step portion 211 and the extending portion 223 are disposed at intervals, one of which is to avoid that the two cannot be precisely matched due to an error of the shielding plate 22 and the insulator 21 in the manufacturing process, and the other is to avoid that the extending portion 223 is deformed due to an unnecessary collision in the assembling process of the shielding plate 22 and the insulator 21, so that the shielding effect is adversely affected, the shielding plate 22 and the insulator 21 are mounted and fixed, the clamping groove 2231 and the guiding portion 2325 are mutually clamped, and to avoid deformation damage of the guiding portion 2325 caused by the collision of the shielding plate 22 in the mounting process, a groove 2232 communicating with the clamping groove 2231 is disposed above the clamping groove 2231, so that the shielding plate 22 cannot collide with the guiding portion 2325 in the vertical direction, and the deformation of the guiding portion 2325 is prevented from being caused by the collision of the shielding plate 22 in the mounting process, and the deformation of the guiding portion 2325 is prevented from being caused by the collision of the insulator 21, so that the deformation of the guiding portion 2325 is prevented from being caused by the collision of the connector 100.

7. The shielding plate 22 includes a plurality of ears 222, the ears 222 include a fastening hole 2221 and two limiting blocks 2222, the two limiting blocks 2222 are oppositely protruded towards the inside of the fastening hole 2221, the insulator 21 includes a plurality of concave portions 213 and a clamping block 212 located in one concave portion 213, the shielding plate 22 is covered above the insulator 21, the clamping block 212 is located in the fastening hole 2221, the ears 222 are located in the concave portions 213, the limiting blocks 2222 can stop the displacement of the clamping block 212, so that the positional relationship between the insulator 21 and the shielding plate 22 is accurately located, the fact that the matching between the insulator and the clamping block 212 is loose is not caused by the fact that the fastening hole 2221 is large, so that the extending portion 223 and the clamping groove 2231 can be accurately located and clamped, further, the arrangement of the concave portions 213 enables the limitation of the ears 222 and the clamping block 212 not to increase the size of the electric connector 100, and the electric connector 100 are miniaturized.

8. The body 231 includes a first portion 2311 and a second portion 2312 disposed at an angle to the first portion 2311, wherein an included angle between an inner side 231a of the first portion 2311 and an inner side 231a of the second portion 2312 is smaller than 180 degrees, and an included angle between an outer side 231b of the first portion 2311 and an outer side 231b of the second portion 2312 is larger than 180 degrees; the shielding part 232 includes a first shielding part 2321, a second shielding part 2322, and a third shielding part 2323 and a fourth shielding part 2324 located at both sides of the first part 2311, and the first shielding part 2321 and the third shielding part 2323 are located at the same side of the body part 231, and the second shielding part 2322 and the fourth shielding part 2324 are located at the other side of the body part 231, in which case, if the first shielding part 2321 and the third shielding part 2323 located at the same side of the body part 231, and the second shielding part 2322 and the fourth shielding part 2324 located at the other side of the body part 231 are bent inward, in order to avoid interference between the first shielding part 2321 and the third shielding part 2323, between the second shielding part 2322 and the fourth shielding part 2324, the areas of the first shielding part 2321 and the third shielding part 2323 are reduced, so that the shielding effect of the ground terminal 23 is reduced, and therefore the first shielding part 2321 and the fourth shielding part 2324 are extended outwards, and the second shielding part 2322 and the third shielding part 2323 are extended inwards, so that the first shielding part 2321, the second shielding part 2322, the third shielding part 2323 and the fourth shielding part 2324 do not interfere with each other, a larger shielding area can be provided, the shielding effect is better, and since one of the left and right adjacent first shielding part 2321 and second shielding part 2322 extends outwards, the shielding area of the ground terminal 23 is increased in the up-down direction, so that the shielding effect of the electrical connector 100 is optimized, facilitating signal transmission.

9. Since the first portion 2311 and the second portion 2312 are disposed at an angle, a gap between the second shielding portion 2322 and the third shielding portion 2323 extending away from the outer side 231b is smaller than a gap between the first shielding portion 2321 and the fourth shielding portion 2324, so that a shielding effect is better, in other words, in terms of miniaturization of the electrical connector 100, the first portion 2311 and the second portion 2312 which are angled may reduce the volume of the electrical connector 100 in a front-rear direction, and further, a problem that a shielding effect is weaker due to a larger space between the first shielding portion 2321 and the fourth shielding portion 2324 caused by the reduced volume may be compensated for by the second shielding portion 2322 and the third shielding portion 2323, so that miniaturization of the electrical connector 100 and the shielding effect of the electrical connector 100 may be satisfied at the same time.

10. The signal terminals 24 include differential signal pairs a between the two ground terminals 23, the differential signal pairs a include embedded portions 241 located in the insulator 21 and exposed portions 242 protruding forward beyond the insulator 21, the width of the exposed portions 242 is smaller than that of the embedded portions 241 in the left-right direction, the width of the exposed portions 242 is larger, so that most of the electric field and magnetic field generated by the differential signal pairs a at the position of the exposed portions 242 by self or alien crosstalk are mutually reduced, i.e., the digestion ability to the alien crosstalk is stronger to show less alien crosstalk, while in order to balance the characteristic impedance of the differential signal pairs a, the width of the portions of the differential signal pairs a covered by the insulator 21 (i.e., the embedded portions 241) is generally reduced in the left-right direction, such a width is reduced to a width that is smaller than that of the exposed portions 242, in order to solve the problem that the digestion ability of the differential signal pairs a at the embedded portions 241 is lower than that of the adjacent signal pairs a is higher than that of the alien crosstalk is generated at the embedded portions 241, the differential signal pairs a are disposed at the position of the adjacent signal pairs a.

11. Due to the arrangement of the clamping groove 2231, the shielding effect of the shielding plate 22 at the clamping groove 2231 is weakened, in other words, more electric fields and magnetic fields leak out at the position of the clamping groove 2231 due to the weakening of the shielding effect, so that crosstalk between the signal terminals 24 increases, the guiding portion 2325 and the extending portion 223 are both arranged in a plate shape, the extending direction of the plate surface of the guiding portion 2325 and the extending direction of the plate surface of the extending portion 223 are mutually perpendicular, and a portion of the guiding portion 2325 is located in front of the extending portion 223, so that the portion of the guiding portion 2325 located in front of the extending portion 223 can absorb the crosstalk leaking out of the clamping groove 2231 in a shielding manner, so as to compensate the problem of weakening of the shielding effect due to the arrangement of the clamping groove 2231.

12. The electrical conduction between the ground terminal 23 and the shield 22 creates a ground circuit therebetween, which is generally considered to be an entire ground circuit from a macroscopic point of viewAre all zero voltage, but in reality they are not held at zero voltage, these non-zero voltage ground loops form a source of crosstalk, i.e. ground-mode resonance (so-called ground-mode) which is a frequency at which its occurrence can be deduced so as to shift it back to a frequency that does not affect the electrical characteristics of the electrical connector 100, according to the following equations

It is known that the frequency f of resonance occurrence can be changed by reducing the coating of the insulator 21 around the ground terminal 23 to change the dielectric constant of the medium, so as to adjust the frequency f of resonance occurrence to a frequency that does not affect the electrical performance of the electrical connector 100, and further, it is required to meet both the following requirements, namely, to reduce the coating of the insulator around the ground terminal 23, so as to change the frequency of occurrence of the ground resonance, and to meet the requirement that stable clamping between the extension 223 and the guide 2325 is possible, namely, the guide 2325 is enabled by a sufficient volume to enable the extension 223 to be clamped so that the shielding performance of the electrical connector 100 is better, so that the width of the resonance adjusting area 2325a is set to be no more than one third of the width of the guide 2325 in the up-down direction.

The above detailed description is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, therefore, all changes that may be made in the equivalent technology using the present specification and illustrations are intended to be included in the scope of the utility model.

Claims (12)

1. An electrical connector, comprising:

the conductive module comprises an insulator, a grounding terminal, a signal terminal and a shielding sheet, wherein the grounding terminal and the signal terminal are accommodated in the insulator, the shielding sheet is positioned on one side of the grounding terminal, and at least one grounding terminal is positioned between two signal terminals; the grounding terminal comprises a contact arm, a body part and a shielding part, wherein the shielding part is formed by extending from the body part in the up-down direction, and the contact arm extends forwards from the body part to protrude out of the insulator; the shielding sheet comprises a main body part and an extension part which extends forwards from the main body part to protrude out of the insulator;

the shielding part comprises a guide connection part, the guide connection part protrudes forwards to extend out of the insulator, the extension part comprises a clamping groove, and the guide connection part is clamped in the clamping groove to electrically conduct the shielding sheet and the grounding terminal.

2. The electrical connector of claim 1, wherein: the upper surface of the guide connection part is not higher than the upper surface of the insulator, the main body part is arranged above the insulator in a covering mode, the extension part is formed by downwards bending and extending from the front end of the main body part, and the clamping position of the clamping groove and the guide connection part is not higher than the upper surface of the insulator.

3. The electrical connector of claim 1, wherein: the extension part comprises two limiting parts positioned at the left side and the right side of the clamping groove, the guide part is clamped in the clamping groove, the two limiting parts correspondingly limit the displacement of the guide part along the left direction and the right direction, the insulator forwards extends to form a step part, the lower end of the guide part is coated in the step part, the step part forwards exceeds the guide part, the rear end of the guide part is coated in the insulator, the insulator upwards exceeds the guide part, the extension part is formed by bending and extending along the upper direction and the lower direction from the front end of the main body part, and is coated at the front end of the insulator, and the extension part and the front end of the insulator are mutually blocked along the front direction and the rear direction.

4. The electrical connector of claim 1, wherein: the electric connector further comprises a shell, the shell comprises a containing cavity, the conductive module is contained in the containing cavity, a step part is formed by extending forwards from the front end of the insulator, the extending part and the conductive connection part do not exceed the step part forwards along the front-back direction, and the contact arm protrudes forwards to extend out of the step part.

5. The electrical connector of claim 1, wherein: the front end of the insulator extends forwards to form a step part, the main body part is covered above the insulator, the extension part is formed by bending and extending downwards from the main body part, the extension part is covered in front of the insulator and is located above the step part, and the step part and the extension part are arranged at intervals along the up-down direction.

6. The electrical connector of claim 5, wherein: the extension part further comprises a groove communicated with the clamping groove along the up-down direction, the clamping groove is clamped with the guide connection part, and the groove is positioned above the guide connection part.

7. The electrical connector of claim 1, wherein: the shielding sheet comprises at least one lug part, the lug part comprises a buckling hole and at least one limiting block, the limiting block is formed by protruding into the buckling hole, the insulator comprises a concave part and at least one clamping block positioned in the concave part, the shielding sheet is covered above the insulator, the clamping block is positioned in the buckling hole, the lug part is positioned in the concave part, and the limiting block stops the displacement of the clamping block.

8. The electrical connector of claim 1, wherein: the body part comprises a first part and a second part which is arranged at an angle with the first part, wherein an included angle between the inner side surface of the first part and the inner side surface of the second part is smaller than 180 degrees, and an included angle between the outer side surface of the first part and the outer side surface of the second part is larger than 180 degrees; the shielding part comprises a first shielding part, a second shielding part, a third shielding part and a fourth shielding part, wherein the first shielding part and the second shielding part are positioned at the left side and the right side of the first part, the third shielding part and the fourth shielding part are positioned at the same side of the left side and the right side of the body part, the second shielding part and the fourth shielding part are positioned at the other side of the left side and the right side of the body part, the first shielding part and the fourth shielding part respectively extend in directions deviating from the inner side surface of the first part and the inner side surface of the second part, and the second shielding part and the third shielding part respectively extend in directions deviating from the outer side surface of the first part and the outer side surface of the second part.

9. The electrical connector of claim 8, wherein: the gap between the first shielding portion and the fourth shielding portion is smaller than the gap between the second shielding portion and the third shielding portion as viewed in the left-right direction.

10. The electrical connector of claim 1, wherein: the signal terminals include differential signal pairs between the two ground terminals, the differential signal pairs including buried portions in the insulator and exposed portions protruding forward from the insulator, the exposed portions having a width smaller than that of the buried portions in a left-right direction, and the shielding portions being located on at least one of left and right sides of the buried portions.

11. The electrical connector of claim 1, wherein: the guide connection part and the extension part are both plate-shaped, the plate surface extension direction of the guide connection part and the plate surface extension direction of the extension part are mutually perpendicular, and the part of the guide connection part is positioned in front of the extension part.

12. The electrical connector of claim 1, wherein: the insulator comprises a step part formed by extending forwards, the guide connection part comprises a resonance adjusting area, the resonance adjusting area is entirely covered in the step part, and the width of the resonance adjusting area is not more than one third of the width of the guide connection part along the up-down direction.

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