CN216120882U

CN216120882U - Electrical connector

Info

Publication number: CN216120882U
Application number: CN202120838520.5U
Authority: CN
Inventors: 张光光
Original assignee: Lotes Co Ltd
Current assignee: Lotes Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-03-22
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses an electric connector, comprising: the insulating body is provided with an accommodating groove; at least one grounding terminal is fixedly arranged on the insulating body and provided with a fixing part and an extending part extending downwards from the fixing part; the grounding piece is accommodated in the accommodating groove and provided with a first limiting part, the first limiting part is provided with a first side, at least one second limiting part and at least one elastic arm extend from the first side, the second limiting part and the first limiting part are positioned in the same horizontal plane, the first limiting part and the second limiting part are both abutted to the inner wall surface of the accommodating groove along the vertical direction, the elastic arm bends from the first limiting part and extends obliquely, one end of the elastic arm, which is far away from the first limiting part, is abutted to the extension part, and the extension part can not move towards one side, which is far away from the grounding piece, when the elastic arm can be stably abutted to the extension part.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector in which a grounding piece and a grounding terminal can be stably abutted.

[ background of the utility model ]

An existing electric connector, it is including having an insulator of an accepting groove, a ground lug accept in the accepting groove, the ground lug have a connecting portion that the lengthwise set up and certainly there are a plurality of butt pieces in one side extension of connecting portion, butt piece with connecting portion are located same horizontal plane, and a plurality of ground terminals are arranged into one row and are fixed in insulator, each ground terminal have a fixed part and certainly a fixed part downwardly extending extension, the extension with butt piece looks butt makes ground terminal with the ground lug electrical property switches on.

However, since the contact piece and the connecting portion are located in the same horizontal plane, the contact piece and the extending portion are in rigid contact, and when the contact piece and the extending portion are in contact, a contact force of the contact piece against the extending portion is large, so that the extending portion moves to a side away from the contact piece, and the ground terminal cannot be conducted with the circuit board. Moreover, since the abutting pieces have manufacturing tolerance in the manufacturing process, the length of one part of the abutting pieces is longer, and the length of the other part of the abutting pieces is shorter. The contact piece having a long length can be in rigid contact with the corresponding ground terminal, but since the contact piece is rigid and does not elastically deform, the contact piece having a short length cannot be in contact with the corresponding ground terminal. Therefore, part of the grounding terminal cannot be electrically conducted with the grounding sheet, and the high-frequency performance of the electric connector is further influenced.

Therefore, there is a need to design an electrical connector to solve the above-mentioned technical problems.

[ Utility model ] content

The utility model aims to provide the electric connector which is characterized in that an elastic arm is bent and obliquely extended on the first side of a first limiting part, one end of the elastic arm far away from the first limiting part is abutted with an extending part of a grounding terminal, and when the elastic arm is abutted with the extending part, the elastic arm has elasticity, so that the elastic arm can be stably abutted with the extending part, and the extending part cannot move towards the side far away from a grounding sheet.

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

an electrical connector, comprising: the insulation body is provided with an accommodating groove; at least one grounding terminal is fixedly arranged on the insulating body and provided with a fixing part and an extending part which extends downwards from the fixing part; the grounding piece is accommodated in the accommodating groove and provided with a first limiting portion, the first limiting portion is provided with a first side, at least one second limiting portion and at least one elastic arm extend from the first side, the second limiting portion and the first limiting portion are located in the same horizontal plane, the vertical direction is followed, the first limiting portion and the second limiting portion are all abutted to the inner wall surface of the accommodating groove, the elastic arm is bent and obliquely extends from the first limiting portion, and the elastic arm is far away from one end of the first limiting portion and abutted to the extending portion.

Furthermore, the elastic arm bends downwards from the first limiting part in the vertical direction and extends obliquely, the elastic arm is provided with an abutting part, the abutting part is located at one end, away from the first limiting part, of the elastic arm, the extending part extends obliquely downwards from the fixing part and towards one side, away from the elastic arm, and the extending part is abutted downwards with the abutting part.

Furthermore, one side of the fixing part, which is close to the grounding piece, is extended with a positioning part, the insulation body is provided with a positioning groove corresponding to the positioning part, the positioning part is accommodated in the positioning groove, the positioning part and the inner wall surface of the positioning groove interfere with each other along the vertical direction, and the abutting position of the extension part and the abutting part is located at one end of the extension part, which is close to the fixing part, and is located below the fixing part.

Further, the insulating body is provided with a groove which is communicated with the accommodating groove, and when the grounding terminal is installed on the insulating body, the abutting position of the extension part and the abutting part is exposed in the groove.

Further, the elastic arm has an inclined portion, one end of the inclined portion is connected with the first limiting portion, the other end of the inclined portion is connected with the abutting portion, an included angle between the inclined portion and the first limiting portion is smaller than an included angle between the fixing portion and the extending portion in the vertical direction, and the length of the inclined portion is larger than the minimum distance between the first side and the extending portion.

Furthermore, the number of the elastic arms is multiple, a plurality of grounding terminals are arranged corresponding to the multiple elastic arms, when the grounding terminals are inserted into the insulating body, the extending parts are in sliding contact with the abutting parts, and an included angle between each elastic arm and the corresponding extending part of one grounding terminal is gradually reduced.

Further, the insulator is provided with at least one yielding groove corresponding to the elastic arm, the bottom surface of the yielding groove is an inclined surface, the inclined surface is formed by downward inclination and extension of the inner wall surface of the accommodating groove in the vertical direction, and the inclined surface is larger than the included angle between the elastic arm and the first limiting part.

Further, follow on the extending direction of elastic arm, the width of elastic arm is the convergent setting, just the width of elastic arm is less than the width of the groove of stepping down.

Furthermore, the first limiting portion is provided with a second side, the second side is opposite to the first side, a plurality of fixing pins extend from the second side, the insulating body is provided with a plurality of fixing grooves corresponding to the fixing pins, the fixing pins are contained in the fixing grooves, one part of the fixing pins are in interference fixing with the fixing grooves, and the other part of the fixing pins are in clearance fit with the fixing grooves.

Further, along the perpendicular to the left and right direction of the direction of insertion of ground lug, each the left and right sides of fixed foot is equipped with a protruding thorn respectively, and is a plurality of the fixed slot includes an at least first fixed slot and an at least second fixed slot, and along left and right direction, the width of first fixed slot is less than the width of second fixed slot, first fixed slot with protruding thorn interferes mutually, the second fixed slot with the clearance has between the protruding thorn.

Compared with the prior art, the electric connector designed by the utility model has the following beneficial effects:

the grounding piece is accommodated in the accommodating groove, the second limiting portion and the elastic arm extend from the first side of the first limiting portion, the second limiting portion and the first limiting portion are located in the same horizontal plane, and the first limiting portion and the second limiting portion are abutted to the inner wall surface of the accommodating groove in the vertical direction. Therefore, when the elastic arm abuts against the extending part, the first limiting part and the second limiting part can abut against the inner wall surface of the accommodating groove in the vertical direction, so that the grounding piece can be prevented from deflecting in the vertical direction. And the elastic arm is formed by bending and obliquely extending the first limiting part in the vertical direction, and one end of the elastic arm, which is far away from the first limiting part, is abutted against the extending part. This is so even if there are manufacturing tolerances during the manufacturing of the grounding plate, so that a part of the resilient arms is longer in length and another part of the resilient arms is shorter in length. However, since the elastic arm has elasticity, when the elastic arm abuts against the extending portion of the ground terminal, the elastic arm can elastically deform, so that the elastic arm can stably abut against the extending portion, and the extending portion can be ensured not to move towards one side away from the elastic arm, so that the ground terminal can be stably conducted with a circuit board, and the electrical connector has good transmission performance.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of the electrical connector of the present invention;

fig. 2 is a partially exploded perspective view of the electrical connector of the present invention;

FIG. 3 is a perspective assembly view of the electrical connector of the present invention;

fig. 4 is a plan view of the electrical connector of the present invention viewed in the front-to-rear direction;

FIG. 5 is a cross-sectional view at B-B of FIG. 4;

FIG. 6 is a cross-sectional view at C-C of FIG. 4;

FIG. 7 is a cross-sectional view taken at D-D of FIG. 4;

fig. 8 is a schematic view of the grounding plate of the electrical connector of the present invention.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electric connector A	Insulating body 1	Storage tank 11
			First fixing groove 12	First width W1	Second fixing groove 13
Second width W2	Abdication groove	14				Inclined surface 141
			Guide ramp 15	First terminal receiving groove 16	Positioning groove 161
Groove 17	Second terminal accommodation groove 18	Plug-in groove 19
			Front row terminal 2	Ground terminal 21	Signal terminal 22
Contact portion 23	Fixing part 24	Positioning part 241
			Extension 25	Weld 26	First included angle theta 1
Rear row terminal 3	Grounding strip 4	First position-limiting part 41
			Second included angle theta 2	First side 411	Second side 412
Second limit part 42	Connecting end 421	Free end 422
			Spring arm 43	Inclined part 431	Abutting portion 432
Third included angle theta 3	Fourth included angle theta 4	Fixing foot 44
			Convex thorn 441	Metal part 5

[ detailed description ] embodiments

The utility model will now be described in further detail with reference to specific embodiments and illustrations for a better understanding of the utility model.

As shown in fig. 1 to 8, the electrical connector a of the present invention defines a front-rear direction (insertion direction of the ground plate 4) and a left-right direction (terminal arrangement direction) and a top-bottom direction (vertical direction) perpendicular to the front-rear direction. For convenience of understanding of the drawings, a forward direction in the front-back direction is a positive direction of an X axis, a rightward direction in the left-right direction is a positive direction of a Y axis, and an upward direction in the up-down direction is a positive direction of a Z axis.

As shown in fig. 1 to 8, an electrical connector a of the present invention includes: the connector comprises an insulating body 1, a front row of terminals 2 and a rear row of terminals 3 which are arranged on the insulating body 1, and a grounding sheet 4 which is positioned between the front row of terminals 2 and the rear row of terminals 3 and is fixed on the insulating body 1; and two metal pieces 5 positioned at the left and right sides of the front row of terminals 2 and the rear row of terminals 3 and fixedly held on the insulating body 1.

As shown in fig. 1, fig. 2, fig. 5 and fig. 7, a receiving groove 11 is recessed rearward on the front surface of the insulating housing 1, and the grounding plate 4 is received in the receiving groove 11. A plurality of first fixing grooves 12 and a plurality of second fixing grooves 13 are recessed rearward from the inner wall surface of the storage groove 11. The plurality of the first fixing grooves 12 and the plurality of the second fixing grooves 13 are arranged in a row in the left-right direction, and each of the first fixing grooves 12 has a first width W1, and each of the second fixing grooves 13 has a second width W2, the first width W1 being smaller than the second width W2. The insulation body 1 is further provided with a plurality of receding grooves 14, the bottom surface of each receding groove 14 is an inclined surface 141, and the inclined surface 141 is formed by extending the inner wall surface of the accommodating groove 11 downwards and forwards. The insulating body 1 is further provided with a plurality of guiding inclined planes 15, and the guiding inclined planes 15 are formed by extending downwards and forwards from the inner wall surface of the accommodating groove 11. Each guiding inclined surface 15 is located between two adjacent receding grooves 14 for providing a receding for the insertion of the grounding strip 4. The front surface of the insulating body 1 is further provided with a plurality of first terminal receiving grooves 16 which are recessed backward, and the front row of terminals 2 are inserted into the first terminal receiving grooves 16 from the back to the front. A positioning groove 161 is recessed backward from the inner wall surface of each first terminal accommodating groove 16, and the positioning groove 161 is used for stably fixing the front row of terminals 2 to the insulating body 1. The front surface of the insulating body 1 is further provided with a groove 17, the groove 17 is communicated with the accommodating groove 11, and the front row of terminals 2 are partially exposed in the groove 17, so that the contact area between the front row of terminals 2 and air is increased.

As shown in fig. 1, 3 and 5, the rear surface of the insulative housing 1 is recessed forward with a plurality of second terminal receiving grooves 18, and the rear row of terminals 3 are inserted into the second terminal receiving grooves 18 from the rear to the front. The rear surface of the insulating body 1 is further provided with a plugging groove 19 in a forward concave manner, the front row of terminals 2 are exposed from top to bottom in the plugging groove 19, and the rear row of terminals 3 are exposed from bottom to top in the plugging groove 19 for being butted with a butting piece (not shown, the same below).

As shown in fig. 1 and 5, the front row of terminals 2 has a plurality of ground terminals 21 and a plurality of signal terminals 22. Each of the ground terminals 21 and the signal terminals 22 has a contact portion 23, and the contact portion 23 of the front row of terminals 2 is exposed from the insertion slot 19 for being abutted with the abutting member. A fixing portion 24 vertically extends downward from the contact portion 23, and the middle points of the ground terminal 21 and the signal terminal 22 are located at the fixing portion 24. A positioning portion 241 extends from one side of the fixing portion 24 close to the ground strip 4, the positioning portion 241 is accommodated in the positioning groove 161, and the positioning portion 241 interferes with the inner wall surface of the positioning groove 161 in the vertical direction, so that the front row terminal 2 can be stably fixed to the insulating body 1. From the fixed part 24 down and towards the slope of keeping away from one side of ground lug 4 extends and forms an extension 25, extension 25 be used for downwards with ground lug 4 looks butt, and along the upper and lower direction the fixed part 24 with a first contained angle theta 1 has between the extension 25. Extending downward from the extending portion 25 and bending to form a soldering portion 26, wherein the soldering portion 26 is used for soldering with a circuit board (not shown, the same applies below).

As shown in fig. 1 and 8, the grounding plate 4 is vertically disposed and is accommodated in the accommodating groove 11. The grounding plate 4 has a first position-limiting portion 41 disposed lengthwise, the first position-limiting portion 41 is in a flat plate shape, and the first position-limiting portion 41 has a first side 411 and a second side 412 disposed opposite to the first side 411. A plurality of second position-limiting parts 42 and a plurality of elastic arms 43 extend from the first side 411 (of course, in other embodiments, the number of the second position-limiting parts 42 and the elastic arms 43 may be one or two). The plurality of second position-limiting portions 42 and the plurality of elastic arms 43 are arranged at intervals in the left-right direction, and the elastic arms 43 go forward beyond the second position-limiting portions 42. A plurality of fixing legs 44 extend from the second side 412, the fixing legs 44 correspond to the elastic arms 43 one by one (in other embodiments, the number of the fixing legs 44 may be greater than the number of the elastic arms 43 or less than the number of the elastic arms 43), and the extending directions of the fixing legs 44 and the elastic arms 43 are opposite.

As shown in fig. 1, 5, 6 and 8, the number of the second position-limiting portions 42 is three (of course, in other embodiments, the number of the second position-limiting portions 42 may be one, two, four, etc.), the second position-limiting portions 42 and the first position-limiting portions 41 are located in the same horizontal plane, and the second position-limiting portions 42 and the first position-limiting portions 41 are all in contact with the inner wall surface of the receiving slot 11 along the vertical direction, so that the grounding plate 4 can be prevented from moving in the vertical and left-right directions by interference fit of the fixing legs 44 and the first fixing slots 12 and fit of the first position-limiting portions 41 and the second position-limiting portions 42 with the receiving slot 11. The second position-limiting portion 42 has a connecting end 421 and a free end 422. The connecting end 421 is connected to the first side 411, and the free end 422 is connected to a tape (not shown, the same applies below). The width of the connecting end 421 is larger than the width of the free end 422 along the left-right direction, and the guiding inclined plane 15 is located below the free end 422, so that the material strip connected with the free end 422 can be folded conveniently.

As shown in fig. 1, 5, 6 and 8, the elastic arm 43 is formed by bending downward and extending forward from the first side 411, and the width of the elastic arm 43 in the extending direction of the elastic arm 43 is tapered, that is, the width of the end of the elastic arm 43 close to the first position-limiting portion 41 is larger than the width of the end of the elastic arm 43 away from the first position-limiting portion 41, so that the forward force when the elastic arm 43 is abutted with the ground terminal 21 can be reduced, and the elasticity of the elastic arm 43 can be increased. A plurality of the elastic arm 43 is with a plurality of the groove 14 one-to-one of stepping down, the groove 14 of stepping down is located the below of elastic arm 43 and along left right direction the width of elastic arm 43 is less than the width of the groove 14 of stepping down, so can prevent when elastic arm 43 elastic deformation down strikes other positions of insulator 1, makes the elastic arm 43 is scratched, in addition the groove 14 of stepping down the inclined plane 141 with a second contained angle theta 2 has between the first spacing portion 41.

As shown in fig. 1, 5, 6 and 8, the elastic arm 43 further has an inclined portion 431 and an abutting portion 432. One end of the inclined portion 431 is connected to the first side 411, and the other end of the inclined portion 431 is connected to the contact portion 432. In the vertical direction, a third included angle θ 3 is formed between the inclined portion 431 and the first limiting portion 41, and the third included angle θ 3 is smaller than the first included angle θ 1, so that the extending portion 25 can be abutted to the elastic arm 43. The third included angle θ 3 is smaller than the second included angle θ 2, so that the yielding groove 14 can provide yielding for the elastic arm 43. And the length of the inclined portion 431 is greater than the minimum distance between the first side 411 and the extension portion 25, so that the elastic arm 43 has better elasticity. The abutting portion 432 is formed in an arc shape to abut the extending portion 25 upward.

As shown in fig. 1, 7 and 8, the fixing legs 44 have the same size and shape, and a protrusion 441 is disposed on each of two sides of each fixing leg 44 along the left-right direction. The number of the fixing legs 44 is equal to the sum of the number of the first fixing grooves 12 and the number of the second fixing grooves 13. A portion of the fixing legs 44 is received in the first fixing groove 12, and the protrusions 441 interfere with left and right wall surfaces of the first fixing groove 12 in the left and right directions. In the present embodiment, three of the fixing legs 44 are received in the first fixing groove 12 (of course, one, two, four, etc. of the fixing legs 44 may be received in the first fixing groove 12 in other embodiments), and interfere with the left and right wall surfaces of the third fixing groove through the protruding spine 441, and the three fixing legs 44 received in the first fixing groove 12 are respectively disposed at opposite sides of the elastic arm 43 adjacent to the three second stopper portions 42 (of course, the fixing legs 44 received in the first fixing groove 12 may be disposed at opposite sides of the elastic arm 43 other than the elastic arm 43 adjacent to the second stopper portions 42 in other embodiments). The other part of the fixing legs 44 is accommodated in the second fixing groove 13, and a gap is formed between the protruding spine 441 and the left and right wall surfaces of the second fixing groove 13 along the left and right directions, so that the grounding plate 4 can be stably fixed in the insulating body 1, and the grounding plate 4 can be conveniently detached.

The installation process of the electric connector A is as follows: firstly, the grounding plate 4 is inserted into the receiving groove 11, so that a part of the fixing legs 44 are received in the first fixing groove 12, and the protruding spines 441 interfere with the left and right wall surfaces of the first fixing groove 12; the other part of the fixing legs 44 is accommodated in the second fixing groove 13, and the protrusions 441 of the other part of the fixing legs 44 have a gap with the left and right wall surfaces of the second fixing groove 13. The first limiting portion 41 and the second limiting portion 42 are both abutted against the inner wall surface of the accommodating groove 11 along the vertical direction, the elastic arm 43 is bent from the first limiting portion 41 and extends obliquely, and the elastic arm 43 is located right above the abdicating groove 14. And then folding the material belt connected with the second limiting part 42. After that, the front row terminals 2 are inserted into the first terminal receiving grooves 16 from the front to the rear. When the front row of terminals 2 is inserted into the first terminal accommodating groove 16, the extending portion 25 of the ground terminal 21 slidably contacts the abutting portion 432, and meanwhile, a fourth included angle θ 4 is formed between each elastic arm 43 and the extending portion 25 of a corresponding one of the ground terminals 21, and the fourth included angle θ 4 gradually decreases. That is, as the ground terminal 21 is inserted, the elastic arms 43 are elastically deformed, so that the fourth included angle θ 4 between each elastic arm 43 and the extending portion 25 of the corresponding one of the ground terminals 21 is gradually decreased. When the front row terminals 2 are inserted to the final position, the contact portions 23 are exposed downward to the insertion grooves 19, and the positioning portions 241 are fixed to the positioning grooves 161 by interference. The elastic arm 43 is partially extended into the receding groove 14 by the abutting force of the extending portion 25, and the abutting position of the abutting portion 432 and the extending portion 25 is located at one end of the extending portion 25 close to the fixing portion 24 and below the fixing portion 24. The abutting positions of the fixing portion 24, the extending portion 25 and the abutting portion 432 are exposed to the groove 17. Thereafter, the rear row terminals 3 are inserted into the second terminal receiving grooves 18, so that the upper ends of the rear row terminals 3 are exposed upward from the insertion grooves 19. Finally, the metal piece 5 is mounted on the insulating body 1 from front to back.

In summary, the electrical connector a of the present invention has the following advantages:

(1) the grounding plate 4 is accommodated in the accommodating groove 11, the second limiting portion 42 and the elastic arm 43 extend from the first side 411 of the first limiting portion 41, the second limiting portion 42 and the first limiting portion 41 are located in the same horizontal plane, and the first limiting portion 41 and the second limiting portion 42 are both abutted against the inner wall surface of the accommodating groove 11 along the vertical direction. When the elastic arm 43 abuts against the extending portion 25, the first stopper portion 41 and the second stopper portion 42 can abut against the inner wall surface of the accommodating groove 11 in the vertical direction, so that the ground contact piece 4 can be prevented from being deflected in the vertical direction. The elastic arm 43 is formed by bending and obliquely extending the first position-limiting portion 41 in the vertical direction, and one end of the elastic arm 43 away from the first position-limiting portion 41 is in contact with the extending portion 25. Even if there are manufacturing tolerances during the manufacturing of the grounding plate 4, a part of the resilient arms 43 will have a longer length and another part of the resilient arms 43 will have a shorter length. However, since the elastic arm 43 has elasticity, when the elastic arm 43 abuts against the extending portion 25 of the ground terminal 21, the elastic arm 43 can be elastically deformed, so that the elastic arm 43 can stably abut against the extending portion 25, and the extending portion 25 can be ensured not to move toward a side away from the elastic arm 43, so that the ground terminal 21 can be stably conducted with the circuit board, and the electrical connector a has good transmission performance.

(2) The extending portion 25 extends downward from the fixing portion 24 and obliquely toward a side away from the elastic arm 43, and the extending portion 25 abuts against the abutting portion 432 downward, so that the extending portion 25 provides an oblique downward abutting force to the elastic arm 43, and the elastic arm 43 is elastically deformed by being pressed to generate an upward elastic force, so that the grounding terminal 21 and the elastic arm 43 can abut against each other more stably.

(3) The positioning portion 241 and the inner wall surface of the positioning groove 161 interfere with each other in the vertical direction, so that the ground terminal 21 can be stably fixed in the insulating body 1, and the abutting position of the extending portion 25 and the abutting portion 432 is located at one end of the extending portion 25 close to the fixing portion 24, so that the amplitude of the signal transmitted by the ground terminal 21 at the soldering portion 26 is the lowest because the ground terminal 21 is in contact with the circuit board through the soldering portion 26. Within a certain length range. The amplitude of the transmission signal of the ground terminal 21 is gradually increased with the side away from the soldering portion 26, and it is known from the calculation formula of the wavelength that the amplitude of the transmission signal of the ground terminal 21 is maximized at the midpoint of the ground terminal 21. Resonance occurs at the maximum amplitude, and the resonance affects the high-frequency performance of the ground terminal 21. The end of the extending portion 25 close to the fixing portion 24 is closer to the midpoint of the ground terminal 21 than the end of the extending portion 25 close to the soldering portion 26, so that resonance is more likely to occur there. By providing the abutting position between the extended portion 25 and the abutting portion 432 at the end of the extended portion 25 close to the fixing portion 24, the amplitude of the transmission signal of the ground terminal 21 at the end of the extended portion 25 close to the fixing portion 24 can be reduced, thereby preventing the ground terminal 21 from resonating at the abutting position between the extended portion 25 and the abutting portion 432, and improving the high-frequency performance of the ground terminal 21. Moreover, the abutting position of the extending portion 25 and the abutting portion 432 is located below the fixing portion 24, and a partial abutting force of the elastic arm 43 to the extending portion 25 can be canceled by the fixing portion 24, so that the outward movement of the extending portion 25 due to an excessive abutting force can be avoided.

(4) The third included angle θ 3 between the inclined portion 431 and the first position-limiting portion 41 in the vertical direction is smaller than the first included angle θ 1 between the fixing portion 24 and the extending portion 25, when the elastic arm 43 abuts against the extending portion 25, the elastic arm 43 is pressed by the extending portion 25 to deform, so that the third included angle θ 3 becomes larger, and the first included angle θ 1 is always larger than the third included angle θ 3, so that the situation that the elastic arm 43 deforms downwards to make the elastic arm 43 parallel to the extending portion 25 or the distance between the elastic arm 43 and the extending portion 25 increases gradually along the extending direction of the elastic arm 43 can be avoided, and thus it is ensured that the elastic arm 43 can abut against the extending portion 25, and the length of the inclined portion 431 is larger than the minimum distance between the first side 411 and the extending portion 25, so that the inclined portion 431 has a longer length, and thus the elastic arm 43 has better elasticity.

(5) When the plurality of ground terminals 21 are inserted into the insulating body 1, while the extending portions 25 slidably contact the abutting portions 432, the fourth included angle θ 4 between each elastic arm 43 and the corresponding extending portion 25 of one ground terminal 21 is gradually decreased, and due to manufacturing tolerance, a part of the elastic arms 43 is relatively long, and another part of the elastic arms 43 is relatively short. When the grounding terminals 21 are inserted into the insulating body 1, the abutting portion 432 of the elastic arm 43 with a longer length is firstly in contact with the extending portion 25, and because the elastic arm 43 has elasticity and the extending portion 25 can be slidably contacted with the abutting portion 432, the elastic arm 43 can provide a deformation adjusting space for the extending portion 25, so that the extending portion 25 can continue to move backwards until the elastic arm 43 with a shorter length abuts against the corresponding extending portion 25, and thus the grounding terminals 21 can abut against the corresponding elastic arms 43.

(6) The bottom surface of the receding groove 14 is the inclined surface 141, and the second included angle θ 2 between the inclined surface 141 and the first limiting portion 41 is greater than the third included angle θ 3 between the inclined portion 431 and the first limiting portion 41, if the bottom surface of the receding groove 14 is a horizontal surface and the horizontal surface of the receding groove 14 is closer to the elastic arm 43, the elastic arm 43 easily collides with the horizontal surface after being deformed by pressure, so that the elastic arm 43 is easily damaged, and if the horizontal surface of the receding groove 14 is farther from the elastic arm 43, the thickness of the plastic of the insulation body 1 at the receding groove 14 is thinner, so that the strength of the insulation body 1 at the receding groove 14 is weaker, and breakage is easily caused. And inclined plane 141 has increased insulator 1 is in the plastic thickness of groove 14 department of stepping down, and then increases insulator 1 is in the intensity of groove 14 department of stepping down, just inclined plane 141 with between first spacing portion 41 second contained angle theta 2 is greater than incline 431 with between the first spacing portion 41 third contained angle theta 3, for the deformation of elastic arm 43 provides the space of stepping down, thereby has avoided striking when elastic arm 43 receives pressure and moves down inclined plane 141.

(7) The width of the elastic arm 43 is tapered, so that the positive force generated when the elastic arm 43 is abutted with the ground terminal 21 can be reduced, and the elasticity of the elastic arm 43 can be increased, thereby preventing the extending part 25 of the ground terminal 21 from moving outwards. Moreover, the width of the elastic arm 43 is smaller than that of the receding groove 14, so that the elastic arm 43 can enter the receding groove 14 after being elastically deformed, and the elastic arm 43 is prevented from being damaged due to the fact that the elastic arm 43 collides with other parts of the insulation body 1.

(8) Along the left and right direction, the width of the first fixing groove 12 is smaller than the width of the second fixing groove 13, the first fixing groove 12 interferes with the protruding spine 441 of the fixing leg 44, a gap is formed between the second fixing groove 13 and the protruding spine 441 of the fixing leg 44, the grounding plate 4 is prevented from moving in the left and right directions and in the up and down direction, and the grounding plate 4 can be conveniently detached by the tight fit between the fixing leg 44 and the first fixing groove 12 and by the loose fit between the fixing leg 44 and the second fixing groove 13.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. An electrical connector, comprising:

the insulation body is provided with an accommodating groove;

at least one grounding terminal is fixedly arranged on the insulating body and provided with a fixing part and an extending part which extends downwards from the fixing part;

the grounding piece is accommodated in the accommodating groove and provided with a first limiting portion, the first limiting portion is provided with a first side, at least one second limiting portion and at least one elastic arm extend from the first side, the second limiting portion and the first limiting portion are located in the same horizontal plane, the vertical direction is followed, the first limiting portion and the second limiting portion are all abutted to the inner wall surface of the accommodating groove, the elastic arm is bent and obliquely extends from the first limiting portion, and the elastic arm is far away from one end of the first limiting portion and abutted to the extending portion.

2. The electrical connector of claim 1, wherein: the elastic arm bends downwards from the first limiting part in the vertical direction and extends obliquely, the elastic arm is provided with an abutting part, the abutting part is located at one end, away from the first limiting part, of the elastic arm, the extending part extends downwards from the fixing part and obliquely towards one side, away from the elastic arm, and the extending part is abutted downwards with the abutting part.

3. The electrical connector of claim 2, wherein: one side of the fixing part, which is close to the grounding piece, is extended with a positioning part, the insulation body is provided with a positioning groove corresponding to the positioning part, the positioning part is contained in the positioning groove, the positioning part and the inner wall surface of the positioning groove interfere with each other along the vertical direction, and the abutting position of the extension part and the abutting part is located at one end of the extension part, which is close to the fixing part, and below the fixing part.

4. The electrical connector of claim 2, wherein: the insulating body is provided with a groove which is communicated with the containing groove, and when the grounding terminal is installed on the insulating body, the abutting position of the extension part and the abutting part is exposed out of the groove.

5. The electrical connector of claim 2, wherein: the elastic arm is provided with an inclined part, one end of the inclined part is connected with the first limiting parts, the other end of the inclined part is connected with the abutting parts, an included angle between the inclined part and the first limiting parts is smaller than an included angle between the fixing part and the extending parts in the vertical direction, and the length of the inclined part is larger than the minimum distance between the first side and the extending parts.

6. The electrical connector of claim 2, wherein: the quantity of elastic arm is a plurality of, is corresponding to a plurality of the elastic arm is equipped with a plurality ofly ground terminal, when a plurality of ground terminal inserts when insulating body, the extension slide contact in butt portion, each elastic arm with one corresponding ground terminal the contained angle between the extension diminishes gradually.

7. The electrical connector of claim 1, wherein: the insulation body is provided with at least one yielding groove corresponding to the elastic arm, the bottom surface of the yielding groove is an inclined surface, the inclined surface is formed by downward inclination and extension of the inner wall surface of the accommodating groove in the vertical direction, and the inclined surface is larger than the included angle between the elastic arm and the first limiting part.

8. The electrical connector of claim 7, wherein: follow on the extending direction of elastic arm, the width of elastic arm is the convergent setting, just the width of elastic arm is less than the width of groove of stepping down.

9. The electrical connector of claim 1, wherein: the first limiting portion is provided with a second side, the second side is opposite to the first side, a plurality of fixing pins extend from the second side, the insulating body is provided with a plurality of fixing grooves corresponding to the fixing pins, the fixing pins are contained in the fixing grooves, one part of the fixing pins are fixed with the fixing grooves in an interference mode, and the other part of the fixing pins are in clearance fit with the fixing grooves.

10. The electrical connector of claim 9, wherein: along the perpendicular to in the right-and-left direction of the direction of insertion of ground lug, each the left and right sides of fixed foot is equipped with a protruding thorn respectively, and is a plurality of the fixed slot includes an at least first fixed slot and an at least second fixed slot, and along right-and-left direction, the width of first fixed slot is less than the width of second fixed slot, first fixed slot with protruding thorn interferes with, the second fixed slot with the clearance has between the protruding thorn.