Conductive terminal and electric connector with same

Abstract

The utility model discloses an electric connector comprising a conductive terminal, and the conductive terminal comprises a vertical plate part, a first extension part and a second extension part which are opposite to each other in a first direction and are arranged at an interval, and a third extension part which bends and extends along a second direction from the upper end of the plate part. The first extending part and the second extending part are bent and extend towards the same side from the two opposite sides of the plate part, the third extending part is located between the first extending part and the second extending part in the second direction, the first elastic arm and the second elastic arm extend from the first extending part and the second extending part respectively, and the first elastic arm and the second elastic arm are arranged in the second direction in a spaced mode. The first elastic arm is provided with a first contact part and a first abutting part, the second elastic arm is provided with a second contact part and a second abutting part, and the first contact part and the second contact part are used for abutting against the same conductive gasket of the butt joint element upwards. The first abutting part and the second abutting part abut against the third extending part downwards.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of electric terminal and the electric connector with the electric terminal, in particular to a kind of electric terminal and the electric connector with the electric terminal of high frequency improvement.

BACKGROUND

[0002] A kind of electric connector of prior art, it is installed downward on a circuit board and is abutted to a chip module upward, it includes an insulating body and multiple electric terminals arranged in the insulating body, multiple the electric terminals include multiple signal terminals and multiple ground terminals, the insulating body has multiple terminal holes through the insulating body along the up-down direction, multiple the electric terminals are one by one housed in multiple the terminal holes, the electric terminal includes a base, a first elastic arm extending upward from the upper end of the base and a second elastic arm extending downward from the lower end of the base, the first elastic arm protrudes out of the terminal hole upward to abut the chip module, the second elastic arm protrudes out of the terminal hole downward to abut the circuit board, to form electrical connection.

[0003] Generally, the first elastic arm and the second elastic arm of the electric terminal are usually set relatively long to protrude out of the corresponding terminal hole to contact with the conductive pad on the chip module upward or the metal pad on the circuit board downward, the length of the first elastic arm and the second elastic arm is often set to be greater than the height of the base in the up-down direction, since the length of conductor is proportional to inductance, the longer the extension length of the first elastic arm and the second elastic arm is, the greater the inductance is, and the impedance value is correspondingly higher (inductance is proportional to impedance), so the first elastic arm and the second elastic arm often exist the condition of high impedance, leading to the impedance mismatch of the signal terminal in the electric connector, so that reflection loss or return loss increases, making the signal integrity worse, that is, not conducive to the transmission of high-frequency signal, difficult to meet the increasingly high-frequency signal transmission requirements of electric connector on the market.

[0004] Therefore, it is necessary to design a new electric terminal and the electric connector with the electric terminal to overcome the above problems.

UTILITY MODEL CONTENTS

[0005] To solve the above problems of prior art, the purpose of the utility model is to provide a new electric terminal and the electric connector with the electric terminal, to solve the problem of high impedance of the elastic arm of electric terminal.

[0006] To achieve the above object, the utility model provides a conductive terminal, include: vertical one board part, first extension and a second extension are opposite and interval setting in a first direction and one third extension is bent and extends from the upper end of the board part along a second direction, first direction, second direction and up and down direction are perpendicular to each other, the first extension and the second extension are bent and extend from the opposite sides of the board part to the same side, the third extension is between the first extension and the second extension in the second direction, a first elastic arm extends from the first extension, a second elastic arm extends from the second extension, the first elastic arm and the second elastic arm are interval setting in the second direction, the first elastic arm has a first contact part and a first abutment, the second elastic arm has a second contact part and a second abutment, the first contact part and the second contact part are used to abut the same conductive pad of the butt joint element upwards, when the butt joint element presses down the first contact part and the second contact part, the first abutment and the second abutment abut the third extension downwards respectively.

[0007] Further, including a fourth extension, a third elastic arm below the first elastic arm and a fourth elastic arm below the second elastic arm, the fourth extension is opposite and below the third extension, the third elastic arm includes a third contact part and a third abutment, the fourth elastic arm includes a fourth contact part and a fourth abutment, the third contact part and the fourth contact part are used to abut the same metal pad of the circuit board downwards, when the circuit board abuts the third contact part and the fourth contact part, the third abutment and the fourth abutment abut the fourth extension upwards respectively.

[0008] Further, the first elastic arm and the third elastic arm are symmetrically arranged up and down, and the second elastic arm and the fourth elastic arm are symmetrically arranged up and down.

[0009] Further, the first contact part and the second contact part are staggered in the first direction and the second direction, and the first abutment and the second abutment are staggered in the first direction and the second direction.

[0010] Further, the shortest distance of the first contact part and the second contact part in the second direction is equal to the shortest distance of the first abutment and the second abutment in the second direction.

[0011] Further, along the first direction, the first contact part and the second contact part are located between the first extension and the second extension respectively, and the shortest distance of the first abutment and the second abutment in the first direction is less than the shortest distance of the first contact part and the second contact part in the first direction.

[0012] Further, the first extension portion comprises a first connecting segment and a first extension segment, the first connecting segment connects the first extension segment and the plate portion, the first extension segment connects the first elastic arm, the second extension portion comprises a second connecting segment and a second extension segment, the second connecting segment connects the second extension segment and the plate portion, the second extension segment connects the second elastic arm, the first extension segment is arranged staggered with the second extension segment in the second direction, a side of the first elastic arm facing the second elastic arm is parallel to a side of the second elastic arm facing the first elastic arm.

[0013] Further, the first extension segment and the second extension segment are both vertically plate-shaped structures, a size of the first extension segment in the up-down direction is greater than a size of the first connecting segment in the up-down direction, a size of the second extension segment in the up-down direction is greater than a size of the second connecting segment in the up-down direction, the first extension segment is parallel to the second extension segment.

[0014] Further, the second extension segment has a concave portion concavely arranged along the second direction, the concave portion connects the second connecting segment.

[0015] Further, widths of the first contact portion and the first abutting portion in the second direction are equal and less than a maximum width of the first elastic arm in the second direction, widths of the second contact portion and the second abutting portion in the second direction are equal and less than a maximum width of the second elastic arm in the second direction.

[0016] Further, the first elastic arm further has a first force arm, the first force arm is bent downward from an end of the first extension portion away from the first contact portion and extends to the first abutting portion; a length of the first elastic arm from the first extension portion to the first contact portion is greater than a length of the first abutting portion to the first contact portion.

[0017] Further, the first elastic arm comprises a first outward expansion portion bent upward from an upper end of the first extension portion and toward a side away from the second extension portion, a first transition portion bent upward from the first outward expansion portion and toward a side close to the second extension portion to the first contact portion, the second elastic arm comprises a second outward expansion portion bent upward from an upper end of the second extension portion and toward a side away from the first extension portion, a second transition portion bent upward from the second outward expansion portion and toward a side close to the first extension portion to the second contact portion, a maximum distance of the first extension portion and the second extension portion in the first direction is less than a maximum distance of the first outward expansion portion and the second outward expansion portion in the first direction.

[0018] Further, the first transition portion includes a first bending segment connecting the first outward expansion portion and a first upper inclined segment extending obliquely upward from the first bending segment to the first contact portion, the first force arm includes a first lower inclined segment extending obliquely upward from the first abutting portion toward a side close to the first extension portion in a first direction, the first upper inclined segment and the first lower inclined segment overlap in a vertical direction, and a length of the first upper inclined segment is greater than a length of the first lower inclined segment.

[0019] Further, the first force arm includes a first upper turning segment extending downward and bending from the first contact portion, a first lower turning segment extending downward and bending from the first upper turning segment to the first lower inclined segment, an included angle between the first upper inclined segment and the first upper turning segment is obtuse, an included angle between the first upper turning segment and the first lower turning segment is obtuse, and an included angle between the first lower turning segment and the first lower inclined segment is obtuse.

[0020] The utility model also provides a kind of electric connector, to abut a pair of connecting elements and a circuit board, it includes: an insulating body;Multiple conductive terminals are located in the insulating body, each conductive terminal has vertical one plate portion, first extension portion and a second extension portion are oppositely and interval arranged in a first direction, and a third extension portion is bent and extended from the upper end of the plate portion along a second direction, first direction, second direction and vertical direction are perpendicular to each other, the first extension portion and the second extension portion are bent and extended from the opposite sides of the plate portion to the same side, the first extension portion and the third extension portion are in the same direction of extension in second direction, from top to bottom, the third extension portion is located between the first extension portion and the second extension portion, a first elastic arm is extended from the first extension portion, a second elastic arm is extended from the second extension portion, the first elastic arm and the second elastic arm are interval arranged in second direction, the first elastic arm has a first contact portion and a first abutting portion, the second elastic arm has a second contact portion and a second abutting portion, the first contact portion and the second contact portion are used to abut the same conductive pad of the connecting element upward, when connecting element presses the first contact portion and the second contact portion, the first abutting portion and the second abutting portion are respectively downward abut the third extension portion, the conductive terminal also has a third elastic arm connecting the first extension portion and a fourth elastic arm connecting the second extension portion, the third elastic arm and the fourth elastic arm are used to downward abut the same metal pad of the circuit board.

[0021] Compared with the prior art, the utility model have following beneficial effect: through setting up first elastic arm and second elastic arm, make its on first contact portion and second contact portion can be upwardly abutted to the same conductive gasket of butt joint element, again through setting up third extension, make first elastic arm and second elastic arm on first abutment and second abutment can be downwardly abutted to third extension, thereby forming four channels (there are two channels for first elastic arm, first contact portion and conductive gasket abutment form a channel, first abutment and third extension abutment form a channel, there are two channels for second elastic arm, second contact portion and conductive gasket abutment form a channel, second abutment and third extension abutment form a channel, so four channels in all), greatly improved the problem of elastic arm impedance high point. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the front view of the utility model electric connector and butt joint element and circuit board before butting;

[0023] Figure 2 It is Figure 1 It is the perspective drawing of showing only one conductive terminal in electric connector;

[0024] Figure 3 It is Figure 2 It is the perspective drawing of another angle;

[0025] Figure 4 It is Figure 3 It is the perspective drawing of another angle;

[0026] Figure 5 It is Figure 4 It is the front view of the utility model electric connector and butt joint element and circuit board before butting;

[0027] Figure 6 It is Figure 2 It is the left view of the utility model electric connector and butt joint element and circuit board before butting;

[0028] Figure 7 It is Figure 2 It is the top view of the utility model electric connector and butt joint element and circuit board before butting.

[0029] Explanation of the drawing of specific embodiment:

[0030] Electric connector 100 Insulating body 1 Terminal hole 11 Conductive terminal 2 Plate portion 21 First extension portion 22 First connecting section 221 First extension section 222 Second extension portion 23 Second connecting section 231 Second extension section 232 Recess 2321 Third extension portion 24 Fourth extension portion 25 First elastic arm 26 First outward expansion portion 261 First transition portion 262 First bending section 2621 First upward inclined section 2622 First contact portion 263 First force arm 264 First upper turning section 2641 First lower turning section 2642 First lower inclined section 2643 First abutting portion 265 First tail portion 266 Second elastic arm 27 Second outward expansion portion 271 Second transition portion 272 Second bending section 2721 Second upward inclined section 2722 Second contact portion 273 Second force arm 274 Second upper turning section 2741 Second lower turning section 2742 Second lower inclined section 2743 Second abutting portion 275 Second tail portion 276 Third elastic arm 28 Third contact portion 281 Third abutting portion 282 Fourth elastic arm 29 Fourth contact portion 291 Fourth abutting portion 292 Mating element 200 Circuit board 300 First direction X Second direction Y Up-down direction Z

Specific embodiment

[0031] In order to better understand the purpose, structure and features of the utility model, now combining with the specific embodiment, the utility model is further explained.

[0032] For the convenience of understanding, the utility model defines first direction (X), second direction (Y) and up-down direction (Z), the three directions are perpendicular to each other.

[0033] As Figures 1 to 7 Shown, the utility model discloses an electric connector 100, the electric connector 100 includes an insulating body 1 and multiple conductive terminals 2, the insulating body 1 is integrally formed by plastic material, has multiple terminal holes 11 along the up-down direction Z through the insulating body 1, multiple conductive terminals 2 are housed in multiple terminal holes 11 one by one, multiple conductive terminals 2 include multiple signal terminals and multiple ground terminals, the electric connector 100 is used to abut to a mating element 200 upwards, abuts to a circuit board 300 downwards, to form electrical connection, in the utility model, the mating element 200 is a chip module, in other embodiments, the mating element 200 can also be other electronic components.

[0034] As Figure 2 And Figure 3 Shown, the conductive terminal 2 is stamped from metal material and includes a plate portion 21, a first extension portion 22, a second extension portion 23, a third extension portion 24 and a fourth extension portion 25 oppositely arranged along the up-down direction Z, a first elastic arm 26 connected to the first extension portion 22, a second elastic arm 27 connected to the second extension portion 23, a third elastic arm 28 below the first elastic arm 26 and a fourth elastic arm 29 below the second elastic arm 27. The plate portion 21, the first extension portion 22, the second extension portion 23, the third extension portion 24 and the fourth extension portion 25 are all housed in the terminal hole 11, the first elastic arm 26 and the second elastic arm 27 protrude out of the terminal hole 11 upwards, the third elastic arm 28 and the fourth elastic arm 29 protrude out of the terminal hole 11 downwards (see Figure 1 ).

[0035] As Figure 2 And Figure 3 Shown, the plate portion 21, the first extension portion 22 and the second extension portion 23 are plate-shaped structures extending along the vertical direction, the first extension portion 22 and the second extension portion 23 are oppositely arranged in a first direction X, and the first extension portion 22 and the second extension portion 23 are both bent and extended from the plate portion 21 on both sides in the first direction X to the same side in a second direction Y.

[0036] As Figure 3 And Figure 4As shown, the first extension part 22 comprises a first connecting segment 221 and a first extension segment 222 connected with each other, the first connecting segment 221 connects the plate part 21, i.e. the first connecting segment 221 is bent and extended from one side of the plate part 21 in the first direction X along one side in the second direction Y, the first extension segment 222 is a regular cuboid structure, the upper end of which is connected with the first elastic arm 26, and the size of the first extension segment 222 in the up-down direction Z is greater than the size of the first connecting segment 221 in the up-down direction Z.

[0037] As shown in Figures 3 to 5 , the second extension part 23 comprises a second connecting segment 231 and a second extension segment 232 connected with each other, the second connecting segment 231 connects the plate part 21, i.e. compared with the first connecting segment 221, the second connecting segment 231 is bent and extended from the other side of the plate part 21 in the first direction X along the same side in the second direction Y, and the upper end of the second extension segment 232 is connected with the second elastic arm 27. The size of the second extension segment 232 in the up-down direction Z is greater than the size of the second connecting segment 231 in the up-down direction Z, the maximum size of the first extension segment 222 in the second direction Y is equal to the maximum size of the second extension segment 232 in the second direction Y, and the plate surfaces of the first extension segment 222 and the second extension segment 232 facing each other are parallel to each other.

[0038] As shown in Figure 3 and Figure 4 , the extension length of the second connecting segment 231 in the second direction Y is less than the extension length of the first connecting segment 221 in the second direction Y, and the two are arranged staggered in the second direction Y, the second extension segment 232 has two recessed parts 2321 recessed along the second direction Y, the two recessed parts 2321 are arranged spaced apart in the up-down direction Z and located on the upper and lower sides of the second connecting segment 231, and each recessed part 2321 connects the second connecting segment 231, which reduces the rigidity of the connection between the second extension segment 232 and the second connecting segment 231, increases the elasticity of the connection between the second connecting segment 231 and the second extension segment 232, makes the second connecting segment 231 easy to bend, and facilitates the molding of the second extension segment 232, and the second extension segment 232 is equivalent to cutting two recessed parts 2321 from the original regular cuboid structure, thereby forming an irregular shape.

[0039] As shown in Figure 2 , Figure 3 and Figure 6As shown, the third extending part 24 is bent and extends from the upper end of the plate part 21 along a second direction Y, the fourth extending part 25 is bent and extends from the lower end of the plate part 21 along a second direction Y, the fourth extending part 25 is located directly below and spaced from the third extending part 24, the size of the third extending part 24 in the first direction X is equal to the size of the fourth extending part 25 in the first direction X. The third extending part 24 is located between the first extending part 22 and the second extending part 23 in the second direction Y, specifically, the third extending part 24 is located between the first extending segment 222 and the second extending segment 232 in the second direction Y and spaced from the first extending segment 222 and the second extending segment 232.

[0040] As shown in Figure 2 and Figure 6 , the first elastic arm 26 includes a first outward expanding part 261, a first transition part 262, a first contact part 263, a first force arm 264, a first abutment part 265 and a first tail part 266, the first outward expanding part 261 is bent and extends upward from the upper end of the first extending segment 222 and away from one side of the second extending part 23, the first transition part 262 is bent and extends upward from the first outward expanding part 261 and towards one side close to the second extending part 23 to the first contact part 263, including a first bending segment 2621 and a first upward inclined segment 2622 connected to each other, the first bending segment 2621 connects the first outward expanding part 261, the first upward inclined segment 2622 extends obliquely upward from the first bending segment 2621 to the first contact part 263, the first contact part 263 protrudes upward corresponding to the terminal hole 11 (see Figure 1 ), and is located at the highest position of the first elastic arm 26 in the up-down direction Z.

[0041] As shown in Figure 2 and Figure 6 , the first force arm 264 is bent and extends downward from one end of the first contact part 263 away from the first extending part 22 to the first abutment part 265, including a first upper turning segment 2641, a first lower turning segment 2642 and a first lower inclined segment 2643. The first upper turning segment 2641 is bent and extends downward from the first contact part 263, the first lower inclined segment 2643 extends obliquely upward from the first abutment part 265 in the first direction X towards one side close to the first extending part 22, and the first lower turning segment 2642 is bent and extends downward from the first upper turning segment 2641 to the first lower inclined segment 2643.

[0042] As shown in Figure 2 and Figure 6As shown, the first upper inclined section 2622 and the first lower inclined section 2643 partially overlap in the up-down direction Z, the length of the first upper inclined section 2622 is greater than the length of the first lower inclined section 2643, and the included angle between the first upper inclined section 2622 and the first upper turning section 2641, the included angle between the first upper turning section 2641 and the first lower turning section 2642, and the included angle between the first lower turning section 2642 and the first lower inclined section 2643 are all obtuse angles.

[0043] As shown in Figure 2 and Figure 6 The first abutting portion 265 is located at the lowest part of the first elastic arm 26, the first tail portion 266 extends upward from the first abutting portion 265 on one side close to the first extension portion 22 in the first direction X, the first abutting portion 265 and the first contact portion 263 are spaced apart in the up-down direction Z, and the two are staggered in the first direction X. The length of the first elastic arm 26 from the first extension portion 22 to the first contact portion 263 is greater than the length from the first contact portion 263 to the first abutting portion 265. Specifically, the length of the first elastic arm 26 from the upper end of the first extension section 222 to the first contact portion 263 is greater than the length of the first elastic arm 26 from the first contact portion 263 to the first abutting portion 265. Define the former as the main arm and the latter as the auxiliary arm. The length of the main arm is greater than the length of the auxiliary arm in order to better meet the mechanical requirements. The length of the auxiliary arm (shorter arm) is shorter mainly to shorten the signal transmission path, thereby improving resonance and crosstalk.

[0044] As shown in Figure 3 and Figure 6 The second elastic arm 27 is the same shape as the first elastic arm 26 and is spaced apart in the second direction Y. The second elastic arm 27 extends upward from the upper end of the second extension section 232 and includes a second outwardly expanding portion 271, a second transition portion 272, a second contact portion 273, a second force arm 274, a second abutting portion 275, and a second tail portion 276. By providing the first elastic arm 26 and the second elastic arm 27, a double elastic arm structure is formed. Overall, compared to only one elastic arm, the width of the double elastic arm is often greater than that of the single elastic arm when other mechanical properties remain unchanged (such as mechanical performance). Since in the inductance formula, the greater the width of the conductor, the smaller the inductance, the setting of the double elastic arm is equivalent to increasing the width of the conductor, thereby reducing the inductance of the conductive terminal 2 at the first elastic arm 26 and the second elastic arm 27, and the impedance is reduced. Secondly, since there is a flat plate capacitor between the two elastic arms (the first elastic arm 26 and the second elastic arm 27), the setting of the double elastic arm actually also increases the capacitance. Since the capacitance is inversely proportional to the impedance, the impedance will also decrease.

[0045] As shown in Figure 3 and Figure 6 , the second outward expansion part 271 is bent and extends upward from the upper end of the second extension part 23 and away from one side of the first extension part 22, and the second transition part 272 is bent and extends upward from the second outward expansion part 271 and towards the other side of the first extension part 22 to the second contact part 273. The maximum distance between the first extension part 22 and the second extension part 23 in the first direction X is less than the maximum distance between the first outward expansion part 261 and the second outward expansion part 271 in the first direction X, and specifically, the maximum distance between the first extension segment 222 and the second extension segment 232 in the first direction X is less than the maximum distance between the first outward expansion part 261 and the second outward expansion part 271 in the first direction X. Since the first extension segment 222 and the second extension segment 232 are both accommodated in the corresponding terminal hole 11 (see Figure 1 ), by limiting the above dimensions, the aperture of the terminal hole 11 in the first direction X can be set to be not too large, and the first transition part 262 and the second transition part 272 can also have a longer extension length, and the aperture of the terminal hole 11 is relatively small, the thickness of the partition between the terminal hole 11 and the terminal hole 11 of the insulating body 1 can be thicker during molding, reducing the risk of damage to the insulating body 1.

[0046] As shown in Figure 3 and Figure 6 , the second transition part 272 includes a second bending segment 2721 and a second upward inclined segment 2722 connected to each other, the second bending segment 2721 connects the second outward expansion part 271, and the second upward inclined segment 2722 extends obliquely upward from the second bending segment 2721 to the second contact part 273, the second contact part 273 protrudes out of the corresponding terminal hole 11 (see Figure 1 ) and is located at the highest position of the second elastic arm 27 in the up-down direction Z, and the first contact part 263 and the second contact part 273 are staggered in the first direction X and located at the same height in the up-down direction Z, so as to abut against the same conductive pad of the mating element 200 upward, by setting double contact points (the first contact part 263 and the second contact part 273), the contact area of the signal is increased, the contact resistance is reduced, and the signal reflection (return loss RL) is reduced.

[0047] As shown in Figures 5 to 7As shown, along the first direction X, the first contact portion 263 and the second contact portion 273 are respectively located between the first extension portion 22 and the second extension portion 23, the first contact portion 263 and the second contact portion 273 are staggered in the second direction Y, the side of the first elastic arm 26 facing the second elastic arm 27 is parallel to the side of the second elastic arm 27 facing the first elastic arm 26, the shortest distance between the first elastic arm 26 and the second elastic arm 27 in the second direction Y is constant, that is, the shortest distance between the second contact portion 273 and the first contact portion 263 in the second direction Y is equal to the shortest distance between the second abutting portion 275 and the first abutting portion 265 in the second direction Y.

[0048] As shown in Figure 3 and Figure 6 As shown, the second force arm 274 is bent downward from one end of the second extension portion 23 away from the second contact portion 273 to the second abutting portion 275, including a second upper turning section 2741, a second lower turning section 2742 and a second downward inclined section 2743. The second upper turning section 2741 is bent downward from the second contact portion 273, the second downward inclined section 2743 extends upwardly and obliquely from the second abutting portion 275 in the first direction X towards the side close to the first extension portion 22, and the second lower turning section 2742 is bent downward from the second upper turning section 2741 to the second downward inclined section 2743.

[0049] As shown in Figure 3 and Figure 6 As shown, the second upper inclined section 2722 and the second downward inclined section 2743 partially overlap in the up-down direction Z, and the length of the second upper inclined section 2722 is greater than the length of the second downward inclined section 2743. The included angle between the second upper inclined section 2722 and the second upper turning section 2741 is obtuse, the included angle between the second upper turning section 2741 and the second lower turning section 2742 is obtuse, and the included angle between the second lower turning section 2742 and the second downward inclined section 2743 is obtuse.

[0050] As shown in Figure 3 and Figure 6As shown, the second abutting portion 275 is located at the lowest part of the second elastic arm 27, and the second tail portion 276 is upwardly bent and extends from the second abutting portion 275 in the first direction X to the side close to the second extending portion 23. The second abutting portion 275 and the second contact portion 273 are spaced apart in the up-down direction Z, and are staggered in the first direction X, the second abutting portion 275 is at the same height as the first abutting portion 265, and downwardly abuts the third extending portion 24. In order to more directly view the structure of the conductive terminal 2 after butt joint, all the drawings of the conductive terminal 2 of the utility model adopt the compressed state, so the second abutting portion 275 and the first abutting portion 265 in the embodiment actually do not contact the third extending portion 24 before compression (i.e. before the conductive terminal 2 is compressed with the butt joint element 200), but in other embodiments, the second abutting portion 275 and the first abutting portion 265 can directly abut the third extending portion 24 before the conductive terminal 2 is compressed with the butt joint element 200.

[0051] As shown in Figures 5 to 7 The first abutting portion 265 and the second abutting portion 275 are staggered in the first direction X and the second direction Y, the shortest distance between the first abutting portion 265 and the second abutting portion 275 in the first direction X is less than the shortest distance between the first contact portion 263 and the second contact portion 273 in the first direction X. The widths of the first contact portion 263 and the first abutting portion 265 in the second direction Y are equal and less than the maximum width of the first elastic arm 26 in the second direction Y, and the widths of the second contact portion 273 and the second abutting portion 275 in the second direction Y are equal and less than the maximum width of the second elastic arm 27 in the second direction Y.

[0052] As shown in Figure 2 And Figure 6As shown, the third elastic arm 28 is formed by bending downward from the lower end of the first extension section 222, and is located below the first elastic arm 26. The first elastic arm 26 and the third elastic arm 28 are arranged symmetrically in the up-down direction. The third elastic arm 28 comprises a third contact portion 281 and a third abutting portion 282. The fourth elastic arm 29 is formed by bending downward from the lower end of the second extension section 232, and is located below the second elastic arm 27. The fourth elastic arm 29 comprises a fourth contact portion 291 and a fourth abutting portion 292. The third contact portion 281 and the fourth contact portion 291 are used for abutting against the same metal pad of the circuit board 300 downward. The third abutting portion 282 and the fourth abutting portion 292 are used for abutting against the fourth extension section 25 upward. By arranging two contact points (the third contact portion 281 and the fourth contact portion 291), the contact area of the signal is increased, and the contact resistance is reduced, so that the signal reflection (return loss RL) is reduced. The first force arm 264 and the second transition section 272 intersect to form an intersection point. The second transition section 272 and the first elastic arm 26 intersect to form two intersection points. The first transition section 262 and the second elastic arm 27 intersect to form two intersection points. The first elastic arm 26 and the second elastic arm 27 are arranged in the second direction and staggered, so that the shielding effect is enhanced, and the crosstalk is improved.

[0053] As shown in Figure 2 and Figure 6 The second elastic arm 27 and the fourth elastic arm 29 are arranged symmetrically in the up-down direction. In other embodiments, the first elastic arm 26 and the third elastic arm 28 can also be arranged asymmetrically, and the second elastic arm 27 and the fourth elastic arm 29 can also be arranged asymmetrically. The principle of arranging the first elastic arm 26 and the second elastic arm 27 is the same. By arranging the third elastic arm 28 and the fourth elastic arm 29 on the lower half of the conductive terminal, a double-elastic-arm structure is formed. From the whole, compared with arranging only one elastic arm on the lower half of the conductive terminal, the width of the double-elastic-arm is usually larger than that of the single elastic arm, and the width of the conductor is inversely proportional to the inductance in the inductance formula. The larger the width, the smaller the inductance. The arrangement of the double elastic arm is equivalent to increasing the width of the conductor, so as to reduce the inductance of the conductive terminal 2 at the third elastic arm 28 and the fourth elastic arm 29, and the impedance is reduced. Since there is a plate capacitor between the two elastic arms (the third elastic arm 28 and the fourth elastic arm 29), the arrangement of the double elastic arm actually also increases the capacitance. Since the capacitance is inversely proportional to the impedance, the impedance is also reduced.

[0054] The conductive terminal and the electrical connector with the conductive terminal have the following beneficial effects:

[0055] 1. By setting the first spring arm 26 and the second spring arm 27, i.e., by setting a double spring arm, firstly, compared to setting only one spring arm, the width of the double spring arm is much larger than that of a single spring arm. Since in the inductance formula, the larger the width of the conductor, the smaller the inductance, the setting of the double spring arm is equivalent to increasing the width of the conductive terminal, thereby reducing the inductance of the conductive terminal 2 at the two spring arms and reducing the impedance; secondly, since there is a planar capacitor between the two spring arms (the first spring arm 26 and the second spring arm 27), the setting of the double spring arm will also increase the capacitance. Since capacitance is inversely proportional to impedance, the impedance will also decrease; the setting of the double spring arm allows the first contact portion 263 and the second contact portion 273 on it to abut upwards against the same conductive pad of the mating element 200 to form a double channel (the The first contact portion 263 abuts against the conductive pad to form one channel, and the second contact portion 273 abuts against the conductive pad to form another channel. That is, by setting dual contact points, the contact area of ​​the signal is increased, the contact resistance is reduced, and thus the signal reflection (return loss RL) is reduced. Furthermore, by setting the third extension portion 24, the first abutting portion 265 and the second abutting portion 275 on the first spring arm 26 and the second spring arm 27 can abut downward against the third extension portion 24, thereby forming a self-contacting dual channel (the first abutting portion 265 abuts against the third extension portion 24 to form one channel, and the second abutting portion 275 abuts against the third extension portion 24 to form another channel), reducing impedance. The above-mentioned four-channel structure of the dual spring arms makes it easier to adjust the impedance of the conductive terminal 2 to achieve impedance matching.

[0056] 2. Since crosstalk is generated by the mutual inductance and capacitance between the signal transmission paths of the conductive terminals 2, and the long-range crosstalk is related to the difference between capacitive and inductive coupling, by setting the third spring arm 28 and the fourth spring arm 29, there is mutual capacitance between the two spring arms, thereby increasing capacitive coupling and canceling inductive coupling, thus improving the long-range crosstalk. In other words, by reducing the inductance and increasing the capacitance, the impedance of the lower half of the conductive terminal 2 is reduced, that is, the overall impedance of the conductive terminal 2 is reduced, achieving impedance matching and thus reducing losses. By setting the third contact portion 281 and the fourth contact portion 291, the contact area between the conductive terminal 2 and the circuit board 300 on the same metal pad is increased, reducing the contact resistance between the conductive terminal 2 and the circuit board 300, thereby reducing signal reflection (i.e., return loss).

[0057] 3、Generally, the conductive pads of the docking element 200 are arranged directly above the conductive terminals 2 or the terminal holes 11, so that the conductive terminals 2 contact the conductive pads upwardly. By setting the shortest distance between the first contact portion 263 and the second contact portion 273 in the second direction Y equal to the shortest distance between the first abutting portion 265 and the second abutting portion 275 in the second direction Y, the distance between the first contact portion 263 and the second contact portion 273 in the second direction Y and the distance between the first abutting portion 265 and the second abutting portion 275 in the second direction Y are limited. In the case that the sliding distance of the first contact portion 263 and the second contact portion 273 in the second direction Y does not exceed the same conductive pad, the risk that the sliding distance of the first abutting portion 265 and the second abutting portion 275 in the second direction Y exceeds the third extension 24 is also reduced.

[0058] 4、The first contact portion 263 and the second contact portion 273 are respectively located between the first extension 22 and the second extension 23, i.e. by limiting the distance between the first contact portion 263 and the second contact portion 273 in the first direction X, the first contact portion 263 and the second contact portion 273 are prevented from exceeding the range of the same conductive pad in the first direction X due to too long sliding distance when sliding in contact with the same conductive pad. The shortest distance between the first abutting portion 265 and the second abutting portion 275 in the first direction X is less than the shortest distance between the first contact portion 263 and the second contact portion 273 in the first direction X.

[0059] 5、Due to the coupling between the two elastic arms (the first elastic arm 26 and the second elastic arm 27), resonance is generated. The first extension 222 is arranged staggered with the second extension 232 in the second direction Y, so as to facilitate the distance between the two elastic arms to be pulled apart, reduce the coupling effect, and thus improve the resonance. The side of the first elastic arm 26 facing the second elastic arm 27 is arranged parallel to the side of the second elastic arm 27 facing the first elastic arm 26, so as to ensure that the shortest distance between the first elastic arm 26 and the second elastic arm 27 in the second direction Y is constant, and also to reduce the coupling effect, and thus improve the resonance.

[0060] 6、The first extension section 222 and the second extension section 232 are vertical plate structures, facilitating the setting of the first elastic arm 26 symmetrically with the third elastic arm 28 and the setting of the second elastic arm 27 symmetrically with the fourth elastic arm 29, the first elastic arm 26 and the third elastic arm 28 are connected with the first extension section 222, the size of the first extension section 222 in the up-down direction Z is greater than the size of the first connecting section 221 in the up-down direction Z, thereby strengthening the mechanical strength of the first extension section 222 and the connection of the first elastic arm 26 and the third elastic arm 28, the second elastic arm 27 and the fourth elastic arm 29 are connected with the second extension section 232, the size of the second extension section 232 in the up-down direction Z is greater than the size of the second connecting section 231 in the up-down direction Z, thereby strengthening the mechanical strength of the second extension section 232 and the connection of the second elastic arm 27 and the fourth elastic arm 29.

[0061] 7、The second extension section 232 has a recessed part 2321 recessed along the second direction Y, the recessed part 2321 is set to connect the second connecting section 231, reducing the rigidity of the connection between the second extension section 232 and the second connecting section 231, thereby improving the elasticity of the connection, making the second connecting section 231 easy to bend and facilitating the molding of the second extension section 232.

[0062] 8、The first contact part 263 and the first abutting part 265 have equal widths in the second direction Y and the widths are less than the maximum width of the first elastic arm 26 in the second direction Y, the second contact part 273 and the second abutting part 275 have equal widths in the second direction Y and the widths are less than the maximum width of the second elastic arm 27 in the second direction Y, reducing the stress when the first contact part 263 and the second contact part 273 contact the docking element 200, and reducing the stress when the first abutting part 265 and the second abutting part 275 contact the third extension part 24.

[0063] 9、The length of the first elastic arm 26 from the first extension part 22 to the first contact part 263 is greater than the length of the first abutting part 265 to the first contact part 263, defining the former as the main force arm and the latter as the auxiliary force arm, the length of the main force arm is greater than that of the auxiliary force arm in order to better meet the mechanical requirements, and the signal transmission path of the auxiliary force arm (shorter force arm) is shortened to improve resonance and cross talk.

[0064] 10. By setting the first expansion portion 261 and the second expansion portion 271, the maximum distance between the first extension portion 22 and the second extension portion 23 in the first direction X is less than the maximum distance between the first expansion portion 261 and the second expansion portion 271 in the first direction X. That is, the diameter of the terminal hole 11 in the first direction X does not need to be set so large, and the first transition portion 262 and the second transition portion 272 can still have a longer extension length. The diameter of the terminal hole 11 is relatively smaller, and the thickness of the partition between the terminal holes 11 will be larger, which will not easily cause damage to the insulating body 1.

[0065] The above detailed description is only a description of the preferred embodiment of this utility model and is not intended to limit the patent scope of this utility model. Therefore, all equivalent technical changes made using the content of this invention's specification and illustrations are included within the patent scope of this invention.

Claims

1. A conductive terminal, characterized in that, include: The plate has a vertical section, a first extension and a second extension that are opposite to each other and spaced apart in a first direction, and a third extension that bends and extends from the upper end of the plate along a second direction. The first direction, the second direction, and the vertical direction are all perpendicular to each other. The first extension and the second extension are formed by bending and extending from opposite sides of the plate toward the same side. The third extension is between the first extension and the second extension in the second direction. A first elastic arm extends from the first extension and a second elastic arm extends from the second extension. The first elastic arm and the second elastic arm are spaced apart in the second direction. The first elastic arm has a first contact portion and a first abutment portion, and the second elastic arm has a second contact portion and a second abutment portion. The first contact portion and the second contact portion are used to abut upward against the same conductive pad of the docking element. When the docking element presses down on the first contact portion and the second contact portion, the first abutment portion and the second abutment portion abut downward against the third extension.

2. The conductive terminal according to claim 1, characterized in that: The device further includes a fourth extension, a third spring arm located below the first spring arm, and a fourth spring arm located below the second spring arm. The fourth extension is vertically opposite to the third extension and is located below the third extension. The third spring arm includes a third contact portion and a third abutment portion, and the fourth spring arm includes a fourth contact portion and a fourth abutment portion. The third contact portion and the fourth contact portion are used to abut downward against the same metal pad of the circuit board. When the circuit board abuts against the third contact portion and the fourth contact portion, the third abutment portion and the fourth abutment portion abut upward against the fourth extension portion, respectively.

3. The conductive terminal according to claim 2, characterized in that: The first and third spring arms are arranged symmetrically in top and bottom, and the second and fourth spring arms are arranged symmetrically in top and bottom.

4. The conductive terminal according to claim 1, characterized in that: The first contact portion and the second contact portion are staggered in both the first and second directions, and the first abutting portion and the second abutting portion are staggered in both the first and second directions.

5. The conductive terminal according to claim 4, characterized in that: The shortest distance between the first contact portion and the second contact portion in the second direction is equal to the shortest distance between the first abutting portion and the second abutting portion in the second direction.

6. The conductive terminal according to claim 4, characterized in that: Along the first direction, the first contact portion and the second contact portion are respectively located between the first extension portion and the second extension portion, and the shortest distance between the first abutting portion and the second abutting portion in the first direction is less than the shortest distance between the first contact portion and the second contact portion in the first direction.

7. The conductive terminal according to claim 4, characterized in that: The first extension includes a first connecting section and a first extension section. The first connecting section connects the first extension section and the plate portion. The first extension section connects the first spring arm. The second extension includes a second connecting section and a second extension section. The second connecting section connects the second extension section and the plate portion. The second extension section connects the second spring arm. The first extension section is offset from the second extension section in a second direction. The side of the first spring arm facing the second spring arm is parallel to the side of the second spring arm facing the first spring arm.

8. The conductive terminal according to claim 7, characterized in that: Both the first extension segment and the second extension segment are vertical plate-like structures. The first extension segment is larger in the vertical direction than the first connecting segment, and the second extension segment is larger in the vertical direction than the second connecting segment. The first extension segment and the second extension segment are parallel.

9. The conductive terminal according to claim 7, characterized in that: The second extension has a recessed portion recessed along a second direction, the recessed portion being connected to the second connecting section.

10. The conductive terminal according to claim 1, characterized in that: The widths of the first contact portion and the first abutment portion in the second direction are equal and less than the maximum width of the first spring arm in the second direction, and the widths of the second contact portion and the second abutment portion in the second direction are equal and less than the maximum width of the second spring arm in the second direction.

11. The conductive terminal according to claim 1, characterized in that: The first elastic arm also has a first lever arm, which bends downward from the end of the first contact portion away from the first extension portion and extends to the first abutment portion; the length of the first elastic arm from the first extension portion to the first contact portion is greater than the length from the first abutment portion to the first contact portion.

12. The conductive terminal according to claim 11, characterized in that: The first elastic arm includes a first outwardly extending portion formed by bending upward from the upper end of the first extension portion and towards the side away from the second extension portion, and a first transition portion formed by bending upward from the first outwardly extending portion and towards the side near the second extension portion to the first contact portion. The second elastic arm includes a second outwardly extending portion formed by bending upward from the upper end of the second extension portion and towards the side away from the first extension portion, and a second transition portion formed by bending upward from the second outwardly extending portion and towards the side near the first extension portion to the second contact portion. The maximum distance between the first extension portion and the second extension portion in a first direction is less than the maximum distance between the first outwardly extending portion and the second outwardly extending portion in a first direction.

13. The conductive terminal according to claim 12, characterized in that: The first transition portion includes a first bent section connecting the first extended portion and a first upwardly inclined section extending obliquely upward from the first bent section to the first contact portion. The first lever arm includes a first downwardly inclined section extending obliquely upward from the first abutting portion in a first direction toward the side closer to the first extension portion. The first upwardly inclined section and the first downwardly inclined section overlap in the vertical direction, and the length of the first upwardly inclined section is greater than the length of the first downwardly inclined section.

14. The conductive terminal according to claim 13, characterized in that: The first lever arm includes a first upper turning segment that bends downward from the first contact portion and a first lower turning segment that bends downward from the first upper turning segment to the first lower inclined segment. The angle between the first upper inclined segment and the first upper turning segment is an obtuse angle, the angle between the first upper turning segment and the first lower turning segment is an obtuse angle, and the angle between the first lower turning segment and the first lower inclined segment is an obtuse angle.

15. An electrical connector for abutting a mating element and a circuit board, characterized in that, include: An insulating body; Multiple conductive terminals are disposed on the insulating body. Each conductive terminal has a vertical plate portion, a first extension portion and a second extension portion that are opposite to each other and spaced apart in a first direction, and a third extension portion that bends and extends from the upper end of the plate portion along a second direction. The first direction, the second direction, and the vertical direction are mutually perpendicular. The first extension portion and the second extension portion are formed by bending and extending from opposite sides of the plate portion toward the same side. The first extension portion and the third extension portion have the same extension direction in the second direction. Viewed from top to bottom, the third extension portion is located between the first extension portion and the second extension portion. A first elastic arm extends from the first extension portion and extends from the second extension portion... A second spring arm is provided, with the first spring arm and the second spring arm spaced apart in a second direction. The first spring arm has a first contact portion and a first abutment portion, and the second spring arm has a second contact portion and a second abutment portion. The first contact portion and the second contact portion are used to abut upward against the same conductive pad of the docking element. When the docking element presses down on the first contact portion and the second contact portion, the first abutment portion and the second abutment portion abut downward against the third extension portion respectively. The conductive terminal also has a third spring arm connected to the first extension portion and a fourth spring arm connected to the second extension portion. The third spring arm and the fourth spring arm are used to abut downward against the same metal pad of the circuit board.

Images