Electrical connector

Abstract

The application discloses an electric connector, which comprises a metal main body, a mating cavity and a plurality of receiving grooves, each of the receiving grooves is provided with a first metal wall and a second metal wall opposite to each other and two third metal walls opposite to each other, the second metal wall is provided with an opening, the receiving groove is communicated with the mating cavity through the opening, a plurality of signal terminals, each of the signal terminals is provided with a main body part and a spring arm, the main body part is wrapped by an insulating part, the spring arm is received in the receiving groove, the spring arm comprises a contact part, the opening is arranged for the contact part to enter the mating cavity, and an insulating block, the insulating block is arranged to be beyond the rear wall in the front direction, and the insulating block is received in the receiving groove. The application adjusts the characteristic impedance of the spring arm by arranging the insulating block beside the spring arm, so that the characteristic impedance of the spring arm is similar to the characteristic impedance of the main body part, thereby improving the high-frequency performance of the electric connector.

Description

[Technical Field]

[0001] This invention relates to an electrical connector, and more particularly to an electrical connector that is advantageous for high-frequency signal transmission. [Background Technology]

[0002] With the development of electrical connectors, the transmission speed of signal terminals is constantly increasing, making the high-frequency performance of electrical connectors increasingly important. Traditional electrical connectors consist of a main body and a spring arm. The main body is covered by an insulating material, while a portion of the spring arm is completely exposed to the air. This results in a significant difference in dielectric constant between the spring arm and the main body, leading to a large difference in characteristic impedance between the two. When transmitting high-frequency signals, this causes substantial return loss at this point, severely impacting the high-frequency performance of the electrical connector.

[0003] Therefore, it is necessary to design a new electrical connector to solve the above problems. [Summary of the Invention]

[0004] The purpose of this invention is to provide an electrical connector that can reduce the characteristic impedance of the spring arm of the terminal, thereby improving high-frequency performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electrical connector, characterized in that it comprises: a metal body having a mating cavity recessed from front to back and a plurality of receiving slots located above and below the mating cavity, the mating cavity having a rear wall, each of the receiving slots being located in front of the rear wall, each of the receiving slots having a first metal wall and a second metal wall facing each other vertically and two third metal walls facing each other horizontally, the second metal wall being closer to the mating cavity than the first metal wall, the second metal wall having an opening, and the receiving slot communicating with the mating cavity through the opening; a plurality of signal terminals, each of the signal terminals having a main body portion located behind the rear wall, a spring arm extending forward from the main body portion and beyond the rear wall, the main body portion being covered by an insulating member, the spring arm being received in the receiving slot, the spring arm including a contact portion, the opening allowing the contact portion to enter the mating cavity; and an insulating block extending forward beyond the rear wall and received in the receiving slot.

[0007] Furthermore, the insulating block includes an outer insulating block located between the spring arm and the first metal wall. The outer insulating block has an adjustment portion located between the first metal wall and the contact portion. When the docking element is inserted into the docking cavity, the contact portion pushes the adjustment portion to move toward the first metal wall.

[0008] Furthermore, the outer insulating block has a connecting portion, which is pivotally connected to the metal body. The adjusting portion abuts against the contact portion. There is a movable space between the adjusting portion and the first metal wall. An abutting portion extends from the first metal wall and extends into the movable space to elastically abut against the adjusting portion.

[0009] Furthermore, the contact portion has an arc surface, a first inclined surface extending forward from the arc surface and away from the docking cavity, and a second inclined surface extending backward from the arc surface and away from the docking cavity. The first inclined surface, the arc surface, and the second inclined surface form a recess. The adjustment portion protrudes into the recess. The adjustment portion has a connecting surface, a third inclined surface extending forward from the connecting surface and away from the docking cavity, and a fourth inclined surface extending backward from the connecting surface and away from the docking cavity. The connecting surface abuts against the arc surface.

[0010] Furthermore, the outer insulating block is an elastic body, the adjusting part abuts against the first metal wall and the elastic arm, and when the contact part moves toward the first metal wall, the adjusting part undergoes elastic deformation and its size decreases in the vertical direction.

[0011] Furthermore, the insulating block has a stop surface positioned at the opening, and the stop surface is flush with the second metal wall.

[0012] Furthermore, the insulating block includes an inner insulating block located behind the contact portion and between the spring arm and the mating cavity, and the inner insulating block has the stop surface.

[0013] Furthermore, the insulating block includes a sleeve insulating block, which is located behind the contact portion and surrounds the spring arm in all four directions (up, down, left, and right). The spring arm has gaps between itself and the sleeve insulating block in all four directions, and the sleeve insulating block has the stop surface.

[0014] Furthermore, the insulating block is sandwiched between the first metal wall and the insulating component.

[0015] Furthermore, the second metal wall and the third metal wall are integral, while the first metal wall and the second metal wall are separate. The signal terminal and the insulating block are inserted into the receiving groove from the position of the first metal wall. The third metal wall has a notch, and the insulating block has a connecting portion, which is sandwiched between the notch and the first metal wall.

[0016] Furthermore, there is a receiving groove between two adjacent receiving grooves, and the receiving groove receives a grounding terminal. The grounding terminal abuts against the third metal wall. The grounding terminal includes a mating part that protrudes into the mating cavity. The left and right surfaces of the mating part are plate surfaces, and the upper and lower surfaces of the spring arm are plate surfaces.

[0017] In addition, the present invention also provides an electrical connector, characterized in that it comprises: a metal body for a mating element to be inserted rearward, having a plurality of receiving slots, each receiving slot having a first metal wall and a second metal wall opposite vertically and two third metal walls opposite horizontally; a plurality of signal terminals, each signal terminal including a main body portion and a spring arm extending forward from the main body portion, the main body portion being covered by an insulating member, the spring arm being received in the receiving slot, the spring arm having a mating surface for contacting the mating element; an outer insulating block being received in the receiving slot, the outer insulating block having an adjusting portion located on the side of the spring arm opposite to the mating surface, the spring arm pushing the adjusting portion to move toward the first metal wall when the mating element is inserted rearward into the metal body.

[0018] Furthermore, the outer insulating block also includes a connecting portion, which is pivotally connected to the metal body. The elastic arm includes a contact portion, and the mating surface is disposed on the contact portion and in contact with the mating element. The adjusting portion abuts against the contact portion. There is a movable space between the adjusting portion and the first metal wall. A pressing portion extends from the first metal wall and extends into the movable space to elastically press against the adjusting portion.

[0019] Furthermore, it includes an inner insulating block located between the plane containing the second metal wall and the spring arm.

[0020] Furthermore, the second metal wall has an opening, the inner insulating block is located behind the mating surface, the inner insulating block has a stop surface, the stop surface is placed in the opening, and the stop surface is flush with the second metal wall.

[0021] Furthermore, the outer insulating block has an elastic portion that abuts against the first metal wall and the elastic arm. When the elastic arm moves toward the first metal wall, the elastic portion undergoes elastic deformation and its dimension shortens in the vertical direction.

[0022] Furthermore, the second metal wall and the third metal wall are integral, while the first metal wall and the second metal wall are separate. The signal terminal and the outer insulating block are inserted into the receiving groove from the position of the first metal wall. The third metal wall has a notch, and the outer insulating block has a connecting part, which is sandwiched between the notch and the first metal wall.

[0023] Furthermore, there is a receiving groove between two adjacent receiving grooves, and the receiving groove receives a grounding terminal. The grounding terminal abuts against the third metal wall. The grounding terminal includes a mating part that connects with the mating element. The left and right surfaces of the mating part are plate surfaces, and the upper and lower surfaces of the spring arm are plate surfaces.

[0024] Compared with the prior art, the electrical connector designed in this invention has the following advantages:

[0025] The first metal wall, the second metal wall, and the two third metal walls provide multi-directional shielding for the signal terminals, greatly enhancing the shielding effect.

[0026] The dielectric constant of the insulating block is greater than that of air, according to the formula (C is capacitance, ε0 is the dielectric constant of air, ε1 is the dielectric constant of other media) and formula It is understood that by placing an insulating block next to the spring arm, the capacitance of the spring arm can be increased, thereby reducing the characteristic impedance of the spring arm and making the characteristic impedance of the spring arm similar to that of the main body, thus avoiding large return loss of high-frequency signals at this point and improving the high-frequency performance of the electrical connector. [Attached Image Description]

[0027] Figure 1 This is a perspective view of the first embodiment of the electrical connector of the present invention;

[0028] Figure 2 This is an exploded perspective view of the first embodiment of the electrical connector of the present invention;

[0029] Figure 3 This is a cross-sectional view of the first embodiment of the electrical connector of the present invention;

[0030] Figure 4 for Figure 3 A schematic diagram after inserting the docking components;

[0031] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle;

[0032] Figure 6 This is a partial perspective sectional view of the first embodiment of the electrical connector of the present invention;

[0033] Figure 7 This is an exploded perspective view of the second embodiment of the electrical connector of the present invention;

[0034] Figure 8 This is a perspective view of the second embodiment of the electrical connector of the present invention;

[0035] Figure 9This is a cross-sectional view of a second embodiment of the electrical connector of the present invention;

[0036] Figure 10 for Figure 9 A schematic diagram after inserting the docking components;

[0037] Figure 11 for Figure 10 Enlarged schematic diagram of part B;

[0038] Figure 12 This is an exploded perspective view of the third embodiment of the electrical connector of the present invention;

[0039] Figure 13 This is a perspective view of the third embodiment of the electrical connector of the present invention;

[0040] Figure 14 This is a cross-sectional view of the third embodiment of the electrical connector of the present invention;

[0041] Figure 15 for Figure 14 A schematic diagram after inserting the docking components;

[0042] Figure 16 for Figure 15 An enlarged schematic diagram of section C;

[0043] Figure 17 This is an exploded perspective view of the fourth embodiment of the electrical connector of the present invention;

[0044] Figure 18 This is a perspective view of the fourth embodiment of the electrical connector of the present invention;

[0045] Figure 19 This is a cross-sectional view of the fourth embodiment of the electrical connector of the present invention;

[0046] Explanation of reference numerals in the accompanying drawings for the specific implementation methods:

[0047]

[0048]

Detailed Implementation Methods

[0049] To facilitate a better understanding of the purpose, structure, features, and effects of this invention, the invention will now be further described in conjunction with the accompanying drawings and specific embodiments. In the directions involved in this invention, the left-right direction is the X-axis, the leftward direction is the positive X-axis direction, the front-back direction is the Y-axis, the forward direction is the positive Y-axis direction, the up-down direction is the Z-axis, and the upward direction is the positive Z-axis direction.

[0050] Figures 1 to 6 This is a first embodiment of the electrical connector 100 of the present invention.

[0051] like Figure 1 and Figure 2 As shown, the electrical connector 100 includes a metal body 1, a plurality of signal terminals 2 and a plurality of ground terminals 3, an insulating member 4 covering the signal terminals 2, and an insulating block 5 for adjusting the characteristic impedance of the signal terminals 2, wherein the insulating block 5 includes only an outer insulating block 5a.

[0052] like Figure 2 , Figure 3 and Figure 6 As shown, the metal body 1 is made of metal material by powder metallurgy. It has a mating cavity 12 recessed from front to back and a plurality of receiving grooves 11 located above and below the mating cavity 12. The mating cavity 12 is for a mating element 6 to be inserted rearward and has a rear wall 121. Each receiving groove 11 is located in front of the rear wall 121. A receiving channel 13 extends rearward from each receiving groove 11. Each receiving groove 11 has a first metal wall 111 and a second metal wall 112 that are vertically opposite each other, and two third metal walls 113 that are horizontally opposite each other. The second metal wall 112 is closer to the mating cavity 12 than the first metal wall 111. The second metal wall 112 has an opening 1121. The receiving groove 11 communicates with the mating cavity 12 through the opening 1121. There is a receiving groove 14 between two adjacent receiving grooves 11. The receiving groove 14 and the receiving groove 11 are separated by a third metal wall 113. The third metal wall 113 has a notch 1131.

[0053] In this embodiment, the metal body 1 is a single piece. In other embodiments, the metal body 1 may be assembled from multiple metal units. Specifically, the mating cavity 12 of the electrical connector 100 of the present invention is formed by one metal body 1, but in other embodiments, the mating cavity 12 may also be assembled from multiple metal units.

[0054] like Figure 2 and Figure 3As shown, each signal terminal 2 includes a main body 21 located behind the rear wall 121 and a spring arm 22 extending forward from the main body 21 and beyond the rear wall 121. In this embodiment, two adjacent signal terminals 2 form a differential signal terminal pair. The two main bodies 21 of a differential signal terminal pair are covered by the same insulating member 4 by insert-molding (of course, in other embodiments, one insulating member 4 can cover the main bodies 21 of a row of signal terminals 2, or one insulating member 4 can cover the main body 21 of one signal terminal 2). The two main bodies 21 and the insulating member 4 are jointly housed in a housing. In channel 13, the two spring arms 22 of the differential signal terminal pair are jointly housed in a receiving groove 11. Each spring arm 22 includes a contact portion 23, which enters the docking cavity 12. The contact portion 23 has a docking surface 235 and an arc surface 231 arranged oppositely, a first inclined surface 232 extending forward from the arc surface 231 and away from the docking cavity 12, and a second inclined surface 233 extending backward from the arc surface 231 and away from the docking cavity 12. The first inclined surface 232, the arc surface 231, and the second inclined surface 233 form a recess 234. The docking surface 235 is located in the docking cavity 12 and docks with the docking element 6.

[0055] like Figure 2 , Figure 3 and Figure 5 As shown, the outer insulating block 5a extends forward beyond the rear wall 121, and a portion of the outer insulating block 5a is received in the receiving groove 11. The outer insulating block 5a has a plurality of adjusting portions 52 arranged in a row along the left-right direction and a connecting portion 51. The adjusting portions 52 are located between the first metal wall 111 and the contact portion 23 and protrude into the recess 234. The adjusting portion 52 has a connecting surface 521, a third inclined surface 522 extending forward from the connecting surface 521 and away from the docking cavity 12, and a fourth inclined surface 523 extending backward from the connecting surface 521 and away from the docking cavity 12. The connecting surface 521 abuts against the arc surface 231.

[0056] In this embodiment, each row of signal terminals 2 corresponds to only one outer insulating block 5a, and each outer insulating block 5a has only one connecting portion 51, which is clamped and pivotally connected between the recess 1131 and the first metal wall 111. However, in other embodiments, each row of signal terminals 2 may correspond to multiple outer insulating blocks 5a.

[0057] like Figure 3 , Figure 4 and Figure 5As shown, there is a movable space P between the adjusting part 52 and the first metal wall 111. A pressing part 114 protrudes from the first metal wall 111 toward the movable space P, and the pressing part 114 elastically presses against the adjusting part 52. When the docking element 6 docks with the electrical connector 100, the contact part 23 is displaced toward the first metal wall 111 under the pressure of the docking element 6. The contact part 23 pushes the adjusting part 52 to rotate. Throughout the process, the pressing part 114 elastically presses against the adjusting part 52, so that the connecting surface 521 elastically presses against the arc surface 231, making the pressure of the contact part 23 on the docking element 6 stronger, thereby making the contact between the contact part 23 and the docking element 6 more stable.

[0058] like Figure 2 and Figure 6 As shown, the grounding terminal 3 is housed in the receiving groove 14. The grounding terminal 3 includes a mating portion 31 and multiple protrusions 32. The mating portion 31 protrudes into the mating cavity 12 and connects with the mating element 6. The protrusions 32 abut against the third metal wall 113. The upper and lower surfaces of the contact portion 23 are plate surfaces (that is, the contact portion 23 of the signal terminal 2 is placed horizontally), and the left and right surfaces of the mating portion 31 are plate surfaces (that is, the mating portion 31 of the grounding terminal 3 is placed vertically).

[0059] like Figure 1 and Figure 2 As shown, the second metal wall 112 and the third metal wall 113 are integral, while the first metal wall 111 and the third metal wall 113 are separate. This structure makes the assembly of the electrical connector 100 more convenient. Specifically, the first metal wall 111 consists of two metal plates that fit together on the third metal wall 113. One of the metal plates is torn to form the pressing part 114, and the other metal plate covers the pressing part 114. During the assembly of the electrical connector 100, the differential signal terminal pair, the insulating member 4, and the outer insulating block 5a are inserted from the position of the first metal wall 111 into the receiving groove 11 and the receiving channel 13. The grounding terminal 3 is inserted from the position of the first metal wall 111 into the receiving groove 14. Finally, the first metal wall 111 is covered, so that the receiving groove 11 and the receiving channel 13 are blocked by metal walls on all sides, providing multi-directional shielding for the signal terminal 2 and enhancing the shielding effect. In other embodiments, the metal body 1 may also be without the mating cavity 12, and the second metal wall 112 may not have an opening 1121.

[0060] like Figures 7 to 11As shown, this is a second embodiment of the electrical connector 100 of the present invention. Unlike the first embodiment, the third metal wall 113 is composed of a single metal plate, and the third metal wall 113 is not torn to form the pressing portion 114. The insulating block 5 includes an outer insulating block 5a and an inner insulating block 5b. The connecting portion 51 is clamped and fixed by the first metal wall 111 and the insulating member 4 (in other embodiments, the connecting portion 51 can also be fixed between the first metal wall 111 and the insulating member 4 by insert-molding). When the mating element 6 mates with the electrical connector 100, the contact portion 23 is squeezed by the mating element 6. The contact portion 23 squeezes the adjusting portion 52, causing the outer insulating block 5a to elastically deform, thereby displacing the contact portion 23 and the adjusting portion 52 together towards the first metal wall 111. The inner insulating block 5b is located behind the contact portion 23 and between the spring arm 22 and the mating cavity 12. Specifically, the inner insulating block 5b is located between the plane containing the spring arm 22 and the second metal wall 112. The inner insulating block 5b has a stop surface 53, which is placed in the opening 1121 and flush with the second metal wall 112. Other structures are the same as in the first embodiment, and therefore will not be described again.

[0061] Furthermore, the inner insulating block 5b described in this embodiment is not only applicable to this embodiment, but can also be used in other embodiments. For example, the inner insulating block 5b can also be added between the spring arm 22 and the second metal wall 112 in the first embodiment at a position behind the contact portion 23.

[0062] like Figures 12 to 16 The diagram shows a third embodiment of the electrical connector 100 of the present invention. The difference from the second embodiment is that the insulating block 5 only includes an outer insulating block 5a, which is an elastically compressible elastomer. Specifically, the material of the elastomer is silicone rubber (or other insulating elastic materials in other embodiments). The adjusting portion 52 abuts against the first metal wall 111. When the mating element 6 mates with the electrical connector 100, the contact portion 23 is displaced towards the first metal wall 111 under the pressure of the mating element 6. The contact portion 23 compresses the adjusting portion 52, causing it to elastically compress and reducing its size in the vertical direction. Other structural features are the same as in the second embodiment and will not be described further.

[0063] like Figure 17 and Figure 19As shown, this is a fourth embodiment of the electrical connector 100 of the present invention. The difference from the first embodiment is that the third metal wall 113 is made of a metal plate, and the third metal wall 113 does not have a tear to form the pressing part 114. The insulating block 5 is a sleeve insulating block, which is sleeved on the outside of the insulating member 4 and abuts against the first metal wall 111. The sleeve insulating block is located behind the contact part 23 and surrounds the spring arm 22 in all directions. There are gaps between the spring arm 22 and the sleeve insulating block in all four directions, so that the contact part 23 will not be blocked by the sleeve insulating block when it moves under the pressure of the mating element 6. In addition, the sleeve insulating block also has a stop surface 53, which is placed in the opening 1121 and is flush with the second metal wall 112.

[0064] In summary, the present invention has the following beneficial effects:

[0065] 1. The first metal wall 111, the second metal wall 112 and the two third metal walls 113 are interconnected, providing multi-directional shielding for the signal terminal 2, which greatly enhances the shielding effect and solves the crosstalk problem between the signal terminals 2.

[0066] When the signal terminal 2 transmits a signal, the spring arm 22 protrudes from the insulating member 4 and is exposed to the air. Since air has a low dielectric constant, according to the formula... (C is capacitance, ε0 is the dielectric constant of air, and ε1 is the dielectric constant of other media). When the spring arm 22 is exposed to air, the capacitance at the spring arm 22 will be lower than the capacitance at the main body 21, according to the formula... It is known that the characteristic impedance of the signal terminal 2 at the spring arm 22 is higher than that of the main body 21; the dielectric constant of the insulating block 5 is greater than that of air. By providing the insulating block 5 on one side of the spring arm 22, the capacitance of the spring arm 22 can be increased, thereby reducing the characteristic impedance of this part and making it similar to the characteristic impedance of the main body 21. This avoids large return loss of high-frequency signals at this point and improves the high-frequency performance of the electrical connector 100.

[0067] 2. When the docking element 6 is inserted, the contact part 23 will push the adjustment part 52 to move towards the first metal wall 111. The contact part 23 will abut against the adjustment part 52, and the adjustment part 52 will also apply pressure to the contact part 23 in one direction to the docking element 6. This pressure can make the contact part 23 and the docking element 6 more tightly connected. Under the influence of impact or vibration, the contact part 23 and the docking element 6 will not break off momentarily.

[0068] In the first embodiment, the connecting part 51 is clamped and pivotally connected between the notch 1131 and the first metal wall 111. The pressing part 114 protrudes from the movable space P and elastically presses against the adjusting part 52. The adjusting part 52 elastically presses against the contact part 23. This allows the contact part 23 to move towards the first metal wall 111, and at the same time, the contact part 23 will push the adjusting part 52 to rotate. The insulating block 5 and the signal terminal 2 move synchronously. In this way, the distance between the outer insulating block 5a and the signal terminal 2 will not change. When the contact part 23 moves, the dielectric constant around the spring arm 22 will not change, so that the characteristic impedance of the signal terminal 2 is relatively stable before and after the docking element 6 is inserted.

[0069] Meanwhile, the connecting surface 521 abuts against the arc surface 231, and through the cooperation of the first inclined surface 232, the second inclined surface 233, the third inclined surface 522, and the fourth inclined surface 523, the facing area of ​​the contact part 23 and the adjustment part 52 is increased. Under the same conditions, the capacitance of the contact part 23 can be increased, thereby making the adjustment part 52 better at adjusting the characteristic impedance of the contact part 23.

[0070] 3. An inner insulating block 5b is provided between the plane where the spring arm 22 and the second metal wall 112 are located, which can further adjust the dielectric constant around the spring arm 22. At the same time, the inner insulating block 5b can also prevent the spring arm 22 from short-circuiting when it comes into contact with the second metal wall 112.

[0071] Furthermore, the stop surface 53 is positioned flush with the opening 1121 and the second metal wall 112, so that when the docking element 6 is inserted into the docking cavity 12, it will be blocked by the stop surface 53, which indirectly reduces the area of ​​the opening 1121. This prevents the docking element 6 from entering the receiving groove 11 through the opening 1121 and causing damage to the signal terminal 2 inside. The insertion of the docking element 6 is more stable and safer. Moreover, compared with increasing the area of ​​the second metal wall 112 and using the second metal wall 112 to block the docking element, the inner insulating block 5b is made of insulating material and will not cause a short circuit when in contact with the metal part on the docking element 6, thus improving the fault tolerance rate.

[0072] 4. In the fourth embodiment, the insulating block 5 is a sleeve insulating block. The sleeve insulating block covers the elastic arm 22 to prevent the elastic arm 22 from contacting the first metal wall 111, the second metal wall 112 and the third metal wall 113 and causing a short circuit. The existence of the gap also allows the elastic arm 22 to undergo elastic deformation in the direction pointing to the first metal wall 111 when the docking element 6 is inserted, so that the docking element 6 can be smoothly inserted into the docking cavity 12.

[0073] 5. The grounding terminal 3 is located in the receiving groove 14, and the left and right surfaces of the grounding terminal 3 are plate surfaces, as are the upper and lower surfaces of the spring arm 22. Due to the presence of the insulating block 5, the vertical dimension of the grounding terminal 3 is close to the vertical dimension of the insulating block 5 plus the signal terminal 2. When the grounding terminal 3 and the signal terminal 2 are arranged in a row, the space of the receiving groove 14 and the receiving groove 11 can be utilized to the maximum extent, thereby reducing the volume of the electrical connector 100. At the same time, not only are the two receiving grooves 11 separated by two third metal walls 113, but the two third metal walls 113 are also provided with a grounding terminal 3, which greatly increases the thickness of the shielding layer. This structure makes it difficult for adjacent signal terminal pairs to interfere with each other. In addition, the grounding terminal 3 abuts against the third metal wall 113, so that the metal body 1 is electrically connected to the grounding terminal 3, making the entire metal body 1 grounded during operation.

[0074] The above detailed description is only an illustration of a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. 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. An electrical connector, characterized in that, include: A metal body has a mating cavity recessed from front to back and a plurality of receiving slots located above and below the mating cavity. The mating cavity has a rear wall. Each receiving slot is located in front of the rear wall. Each receiving slot has a first metal wall and a second metal wall that are vertically opposite each other, and two third metal walls that are horizontally opposite each other. The second metal wall is closer to the mating cavity than the first metal wall. The second metal wall has an opening, and the receiving slot communicates with the mating cavity through the opening. Multiple signal terminals, each of the signal terminals having a main body located behind the rear wall and a spring arm extending forward from the main body and beyond the rear wall, the main body being covered by an insulating member, the spring arm being received in the receiving groove, the spring arm including a contact portion, the opening yielding the contact portion to allow the contact portion to enter the docking cavity. An insulating block that extends forward beyond the rear wall and is received in the receiving groove.

2. The electrical connector as described in claim 1, characterized in that: The insulating block includes an outer insulating block located between the spring arm and the first metal wall. The outer insulating block has an adjustment portion located between the first metal wall and the contact portion. When the docking element is inserted into the docking cavity, the contact portion pushes the adjustment portion to move toward the first metal wall.

3. The electrical connector as described in claim 2, characterized in that: The outer insulating block has a connecting portion pivotally connected to the metal body, an adjusting portion pressing against the contact portion, a movable space between the adjusting portion and the first metal wall, and a pressing portion extending from the first metal wall, the pressing portion extending into the movable space and elastically pressing against the adjusting portion.

4. The electrical connector as described in claim 2, characterized in that: The contact portion has an arc surface, a first inclined surface extending forward from the arc surface and away from the docking cavity, and a second inclined surface extending backward from the arc surface and away from the docking cavity. The first inclined surface, the arc surface, and the second inclined surface form a recess. The adjustment portion protrudes into the recess. The adjustment portion has a connecting surface, a third inclined surface extending forward from the connecting surface and away from the docking cavity, and a fourth inclined surface extending backward from the connecting surface and away from the docking cavity. The connecting surface abuts against the arc surface.

5. The electrical connector as described in claim 2, characterized in that: The outer insulating block is an elastic body. The adjusting part abuts against the first metal wall and the elastic arm. When the contact part moves toward the first metal wall, the adjusting part undergoes elastic deformation and its size decreases in the vertical direction.

6. The electrical connector as claimed in claim 1, characterized in that: The insulating block has a stop surface positioned at the opening and flush with the second metal wall.

7. The electrical connector as claimed in claim 6, characterized in that: The insulating block includes an inner insulating block located behind the contact portion and between the spring arm and the mating cavity, and the inner insulating block has the stop surface.

8. The electrical connector as claimed in claim 6, characterized in that: The insulating block includes a sleeve insulating block, which is located behind the contact portion and surrounds the spring arm in all four directions (up, down, left, and right). The spring arm has gaps between itself and the sleeve insulating block in all four directions. The sleeve insulating block has the stop surface.

9. The electrical connector as claimed in claim 1, characterized in that: The insulating block is sandwiched between the first metal wall and the insulating component.

10. The electrical connector as claimed in claim 1, characterized in that: The second metal wall and the third metal wall are integral, while the first metal wall and the second metal wall are separate. The signal terminal and the insulating block are inserted into the receiving groove from the position of the first metal wall. The third metal wall has a notch, and the insulating block has a connecting part, which is sandwiched between the notch and the first metal wall.

11. The electrical connector as claimed in claim 1, characterized in that: There is a receiving groove between two adjacent receiving grooves, and the receiving groove receives a grounding terminal. The grounding terminal abuts against the third metal wall. The grounding terminal has a mating part that protrudes into the mating cavity. The left and right surfaces of the mating part are plate surfaces, and the upper and lower surfaces of the spring arm are plate surfaces.

12. An electrical connector, characterized in that, include: A metal body for a docking element to be inserted rearward, having a plurality of receiving slots, each receiving slot having a first metal wall and a second metal wall opposite vertically and two third metal walls opposite horizontally. Multiple signal terminals, each of the signal terminals including a main body and a spring arm extending forward from the main body, the main body being covered by an insulating member, the spring arm being received in the receiving groove, and the spring arm having a mating surface for contacting a mating element; An outer insulating block is housed in the receiving groove. The outer insulating block has an adjustment part located on the side of the spring arm facing away from the mating surface. When the mating element is inserted rearward into the metal body, the spring arm pushes the adjustment part to move toward the first metal wall.

13. The electrical connector as claimed in claim 12, characterized in that: The outer insulating block further includes a connecting portion, which is pivotally connected to the metal body. The elastic arm includes a contact portion, and the mating surface is disposed on the contact portion and in contact with the mating element. The adjusting portion abuts against the contact portion. There is a movable space between the adjusting portion and the first metal wall. A pressing portion extends from the first metal wall and extends into the movable space to elastically press against the adjusting portion.

14. The electrical connector as claimed in claim 12, characterized in that: It further includes an inner insulating block located between the plane containing the second metal wall and the spring arm.

15. The electrical connector as claimed in claim 14, characterized in that: The second metal wall has an opening, the inner insulating block is located behind the mating surface, the inner insulating block has a stop surface, the stop surface is placed in the opening, and the stop surface is flush with the second metal wall.

16. The electrical connector as claimed in claim 12, characterized in that: The outer insulating block has an elastic portion that abuts against the first metal wall and the elastic arm. When the elastic arm moves toward the first metal wall, the elastic portion undergoes elastic deformation and its dimension shortens in the vertical direction.

17. The electrical connector as claimed in claim 12, characterized in that: The second metal wall and the third metal wall are integral, while the first metal wall and the second metal wall are separate. The signal terminal and the outer insulating block are inserted into the receiving groove from the position of the first metal wall. The third metal wall has a notch, and the outer insulating block has a connecting part, which is sandwiched between the notch and the first metal wall.

18. The electrical connector as claimed in claim 12, characterized in that: There is a receiving groove between two adjacent receiving grooves. The receiving groove receives a grounding terminal. The grounding terminal abuts against the third metal wall. The grounding terminal includes a mating part that connects with the mating element. The left and right surfaces of the mating part are plate surfaces, and the upper and lower surfaces of the spring arm are plate surfaces.

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