Electric connector and electric connector assembly

Abstract

The utility model discloses an electric connector and an electric connector assembly, which are characterized in that an insulating body is concavely provided with a slot, a plurality of terminal slots are arranged along the lengthwise direction, each terminal is provided with a fixing part, a neck part extends upwards from the fixing part, gaps are arranged between the neck part and the inner wall surface of the corresponding terminal slot in the lengthwise direction and the transverse direction, and the slot is provided with a plurality of through holes; the neck portion extends upwards to form two contact arms, the two contact arms are oppositely arranged in a protruding mode to form two contact portions to enter the inserting grooves, the fixing portion is provided with a first protruding portion and a second protruding portion in a protruding mode in the lengthwise direction, the protruding direction of the second protruding portion is opposite to that of the first protruding portion, and at least part of the first protruding portion is located under the neck portion. The two second protruding parts are close to the edges of the two opposite sides of the fixing part respectively in the transverse direction, and the first protruding parts and the second protruding parts interfere with the two opposite inner walls of the corresponding terminal grooves respectively in the longitudinal direction, so that the two contact parts of the terminal can stably clamp a butt joint element, and the terminal is inserted into the terminal grooves in the middle.

Description

Technical field

[0001] The utility model relates to an electric connector and an electric connector assembly, in particular to an electric connector and an electric connector assembly which can prevent terminal installation deviation. Background technology

[0002] There is an existing power connector, such as the power connector described in Chinese patent CN202011261236.2, which is used to connect to a first substrate, and the power connector includes a shell, the shell is recessed with a groove, and the groove is longitudinally arranged in the longitudinal direction. The shell is also provided with a plurality of power contact grooves, and a plurality of power contacts are respectively fixed in the plurality of power contact grooves, and the plurality of power contacts are flat-plate-shaped, each of the power contacts has a contact body, and two mating ends extend upward from the contact body, and the two mating ends protrude from both sides of the groove in the transverse direction into the groove to abut against the first substrate, and a convex thorn is respectively protruded on both sides of the contact body in the transverse direction. When the power contact is installed in the power contact groove, the convex thorn interferes with the inner wall of the power contact groove, so that the power contact can be stably fixed in the shell and connected to the first substrate.

[0003] However, since the contact body is only fixed by the convex thorn and the power contact slot by lateral interference, there is a gap between the contact body and the power contact slot in the longitudinal direction L, which makes the contact body easy to be inserted crooked during installation, affecting the docking of the mating end with the first substrate, and since the contact body is transversely fixed to the power contact slot, the two mating ends extend upward from the upper end of the contact body respectively, and the two mating terminals abut against the two surfaces of the first substrate respectively along the transverse direction. Therefore, when the first substrate is obliquely inserted into the slot, one of the mating ends of the power contact is pushed by force to shift laterally away from the center of the slot, while the other mating end of the power contact does not swing with the shift of one of the mating ends. This will cause the other mating end that is not pushed by the first substrate to be unable to conduct with the first substrate due to the gap, thereby affecting the signal transmission between the first substrate and the electrical connector.

[0004] Therefore, it is necessary to design an electrical connector and an electrical connector assembly to solve the above technical problems.

Contents of utility model

[0005] ​​The purpose of the present utility model is to have a gap between the neck and the inner wall surface of the corresponding terminal slot in both the longitudinal direction and the transverse direction, and to have one first protrusion and two second protrusions with opposite protruding directions provided on the fixing portion in the longitudinal direction to interfere with the two side walls of the terminal slot, so that even if the docking element is obliquely inserted into the insulation body slot, the two contact portions of the terminal can stably clamp the two surfaces of the docking element and the terminal can be centered and inserted into the terminal slot, thereby preventing the electrical connector and the electrical connector assembly with the terminal installation deviation.

[0006] In order to achieve the above object, the present utility model adopts the following technical solutions:

[0007] An electrical connector for docking with a docking element, characterized in that it includes: an insulation body, which is recessed with a slot from top to bottom, the slot extends in the longitudinal direction, a plurality of terminal slots are arranged in the longitudinal direction, and each of the terminal slots communicates with the opposite two sides of the slot in the transverse direction; a plurality of terminals are respectively held in the plurality of terminal slots, each terminal has a fixing portion, a neck extends upward from the fixing portion, there is a gap between the neck and the inner wall surface of the corresponding terminal slot in both the longitudinal direction and the transverse direction, two contact arms extend upward from the neck, and the two contact arms protrude towards each other to form two contact portions entering the slot, at least one first protrusion and at least two second protrusions with the protruding direction opposite to that of the first protrusion are protruded on the fixing portion in the longitudinal direction, at least part of the first protrusion is located directly below the neck, the two second protrusions are respectively close to the opposite two side edges of the fixing portion in the transverse direction, in the longitudinal direction, the first protrusion and the second protrusion of each terminal respectively interfere with the opposite two inner walls of the corresponding terminal slot; when the docking element is inserted downward into the slot to dock with the terminal, the two contact portions of each terminal in the transverse direction respectively clamp the docking element from the opposite two surfaces of the slot.

[0008] Further, the fixing portion has a positioning plate and two holding arms extending upward from the positioning plate, the two holding arms are located on the opposite sides of the neck in the transverse direction, the first protrusion is protruded from the thickness direction of the positioning plate, one of the second protrusions is protruded from the thickness direction of each of the two holding arms, each second protrusion extends downward to the positioning plate, and the dimension of the first protrusion extending in the transverse direction is greater than the dimension of the second protrusion extending in the transverse direction.

[0009] Further, two barbs are transversely protruded on one side edge away from the neck of each of the holding arms along the transverse direction and are arranged at intervals in the vertical direction. A convex bump is protruded between the two barbs of each of the holding arms. The convex bump has the same protruding direction as the first protruding portion and jointly interferes with the inner wall on the same side of the terminal slot. The barbs of the two holding arms along the transverse direction respectively interfere with the other two inner walls of the terminal slot.

[0010] Further, the positioning plate extends downward to have two welding feet. The two welding feet of two adjacent terminals are arranged in a staggered manner. The distances between the two welding feet and the center line of the neck are not equal. A connecting material portion is protruded at the lower end of the positioning plate. The connecting material portion is located between the two welding feet. The center line of the neck passes downward through the connecting material portion.

[0011] Further, the distance between the contact portion on the same side of the slot along the transverse direction and the inner side wall of the slot is greater than 0.2 mm. And one side of each contact portion close to the center of the slot has an inclined surface. The inclined surface extends obliquely downward toward the center of the slot. The included angle between the inclined surfaces of the two contact portions of each terminal is less than 30 degrees.

[0012] In addition, an electrical connector assembly includes the electrical connector and the docking element that are docked with each other. It is characterized in that: in the electrical connector, a plurality of the terminals include a plurality of positive terminals arranged continuously and at intervals to form a positive terminal group and a plurality of negative terminals arranged continuously and at intervals to form a negative terminal group. And the positive terminal group and the negative terminal group are arranged adjacent to each other in the longitudinal direction. At least one first contact pad and at least one second contact pad adjacent to each other in the longitudinal direction are provided on two surfaces of the docking element along the transverse direction. The first contact pad is docked with the positive terminal group. The second contact pad is docked with the negative terminal group.

[0013] Further, a first chamfer is provided at the lower end of one side of the first contact pad close to the second contact pad. A second chamfer is provided at the lower end of one side of the second contact pad close to the first contact pad. The first chamfer and the second chamfer are arranged opposite to each other along the longitudinal direction.

[0014] Further, the positive terminal group includes at least 10 of the positive terminals, the negative terminal group includes at least 10 of the negative terminals, the distance between the positive terminal group and the negative terminal group along the longitudinal direction is greater than the distance between any two adjacent positive terminals and the distance between any two adjacent negative terminals, both the first contact pad and the second contact pad located on the same surface of the docking element have two and are spaced along the longitudinal direction, the two first contact pads are adjacent to each other and are docked with the positive terminal group, and the two second contact pads are adjacent to each other and are docked with the negative terminal group.

[0015] Further, the plurality of terminals are all flat blanking terminals, and the plate surface of each terminal is perpendicular to the longitudinal direction, and the cut surfaces of the two contact portions of each terminal are docked with the first contact pad or the second contact pad on the two surfaces of the docking element in its thickness direction.

[0016] Further, the slot has a first dimension in the transverse direction, the docking element has a second dimension, the first dimension is greater than the second dimension, and the difference between the first dimension and the second dimension is greater than or equal to 0.4 millimeters.

[0017] In addition, an electrical connector assembly, characterized in that it comprises: an electrical connector having an insulating body, the insulating body being recessed with a slot from top to bottom, the slot extending in the longitudinal direction, a plurality of terminals being arranged at intervals in the longitudinal direction in the slot, each terminal having a fixing portion, a neck extending upward from the fixing portion and being swingable in a lateral direction perpendicular to the longitudinal direction, the neck extending upward to form two contact arms, the two contact arms protruding toward each other to form two contact portions protruding into the slot, at least one first protrusion protruding from the fixing portion in the longitudinal direction and at least two second protrusions protruding in a direction opposite to the protruding direction of the first protrusion, the first protrusion being at least partially located directly below the neck, the two second protrusions being respectively close to the opposite side edges of the fixing portion in the lateral direction, the plurality of terminals including a plurality of positive terminals arranged continuously to form a positive terminal group and a plurality of negative terminals arranged continuously to form a negative terminal group, the positive terminal group and the negative terminal group being arranged adjacent to each other in the longitudinal direction; a docking element being inserted into the slot from top to bottom, at least one first contact pad and at least one second contact pad adjacent to each other in the longitudinal direction being provided on both surfaces of the docking element in the lateral direction, the first contact pad being docked with the positive terminal group, and a first chamfer being provided at the lower end of the side of the first contact pad close to the second contact pad, the second contact pad being docked with the negative terminal group, and a second chamfer being provided at the lower end of the side of the second contact pad close to the first contact pad, the first chamfer and the second chamfer being arranged opposite to each other in the longitudinal direction.

[0018] Compared with the prior art, the electrical connector and the electrical connector assembly designed by the present utility model have the following beneficial effects:

[0019] Each terminal in the present utility model has the fixing portion, from which the neck extends upward. There are gaps between the neck and the inner wall surfaces of the corresponding terminal slots in both the longitudinal direction and the transverse direction. Two contact arms extend upward from the neck, and two contact portions are respectively provided on the two contact arms and protrude transversely into the slot for clamping the docking element. In this way, the neck can swing in the transverse direction. Thus, even if the docking element is obliquely inserted into the slot, the contact portion of one of the contact arms will be offset toward the side away from the center of the slot under the action of the pushing force of the docking element, and the neck will swing along with the offset of the contact arm, thereby driving the other contact arm to offset toward the side close to the docking element, so that the docking element can be stably clamped between the two contact portions of the terminal, ensuring the stable docking of the electrical connector and the docking element. Moreover, because in the longitudinal direction, the fixing portion is provided with one first protrusion and two second protrusions with opposite protruding directions and respectively interfering with the two side walls of the terminal slot. The first protrusion is at least partially located directly below the neck, and the two second protrusions are respectively close to the opposite side edges of the fixing portion in the transverse direction. Therefore, when the terminal is inserted into the terminal slot, the terminal will not be displaced in the longitudinal direction, ensuring that the terminal is installed exactly in the center of the corresponding terminal slot, preventing the terminal from being inserted obliquely, and further preventing the misalignment of the terminal installation. In this way, the terminal can be in direct contact with the docking element, ensuring the stable docking of the electrical connector and the docking element.

Description of the Drawings

[0020] Figure 1 is a three-dimensional exploded view of the electrical connector assembly of the present utility model;

[0021] Figure 2 is a partial three-dimensional cross-sectional view of the electrical connector of the present utility model;

[0022] Figure 3 is Figure 2 the enlarged view on A of

[0023] Figure 4 is a bottom view schematic diagram of the electrical connector of the present utility model;

[0024] Figure 5 is a cross-sectional view schematic diagram of the electrical connector assembly of the present utility model when the docking element is not inserted into the electrical connector;

[0025] Figure 6 is a cross-sectional view schematic diagram of the electrical connector assembly of the present utility model when the docking element is inserted into the electrical connector;

[0026] Figure 7Partial cross-sectional views of the electrical connector assembly of the present utility model in the longitudinal direction and the transverse direction;

[0027] Figure 8 Schematic diagram of the docking element obliquely inserted into the electrical connector in the electrical connector assembly of the present utility model;

[0028] Figure 9 Schematic diagram of the terminal in the electrical connector assembly of the present utility model;

[0029] Figure 10 is Figure 9 front view of;

[0030] Figure 11 Schematic diagram of the docking element in the electrical connector assembly of the present utility model with the green paint removed;

[0031] Figure 12 is Figure 11 cross-sectional view in the B - B direction.

[0032] Explanation of the reference numerals in the drawings of the specific embodiments:

[0033]

[0034]

Specific Embodiments

[0035] For a better understanding of the content of the present utility model, the present utility model will be further described in detail below in conjunction with specific implementation schemes and drawings.

[0036] As Figures 1 to 12 shown, a kind of electrical connector 100 and an electrical connector assembly 1000 provided by the present utility model are shown. The electrical connector assembly 1000 includes the electrical connector 100 and a pair of docking elements 200 docked with it (in this embodiment, the docking element 200 is a card - type power module. Of course, in other embodiments, the docking element 200 can also be a docking connector or a circuit board, etc.). The electrical connector 100 has an insulating body 1. The insulating body 1 is longitudinally arranged along a longitudinal direction. Along the up - down direction, the insulating body 1 is recessed with a slot 11 from top to bottom. The slot 11 extends along the longitudinal direction. A plurality of terminals 2 are arranged at intervals along the longitudinal direction in the slot 11. Along a transverse direction perpendicular to the longitudinal direction and the up - down direction, at least one contact pad 1' is provided on each of the opposite two surfaces of the docking element 200 (in this embodiment, the number of the contact pads 1' on each surface of the docking element 200 is four). The docking element 200 is inserted into the slot 11 along the up - down direction, so that the contact pads 1' are in contact with the terminals 2.

[0037] AsFigures 1 to 12 As shown, for the convenience of understanding the accompanying drawings, the longitudinal direction is represented by the L axis, the transverse direction is represented by the W axis, and the up-and-down direction is represented by the V axis.

[0038] As Figure 1 and Figure 5 As shown, the insulating body 1 is recessed with the slot 11, and the slot 11 has a first dimension D1 in the transverse direction perpendicular to the longitudinal direction (in this embodiment, the width of the first dimension D1 is 2.38 millimeters). The insulating body 1 is further recessed with a plurality of terminal slots 12 from bottom to top. The plurality of terminal slots 12 are arranged along the longitudinal direction, and each terminal slot 12 is not only connected to the slot 11 in the up-and-down direction, but also each terminal slot 12 communicates with opposite sides of the slot 11 in the transverse direction. The plurality of terminals 2 correspond to the plurality of terminal slots 12 one by one, and each terminal 2 is held in the corresponding terminal slot 12.

[0039] As Figure 1 , Figure 5 , Figure 7 , Figure 9 and Figure 10 As shown, the plurality of terminals 2 are all flat blanking terminals 2, and the plate surface of each terminal 2 is perpendicular to the longitudinal direction. Each terminal 2 has a fixing portion 21, and the fixing portions 21 of the plurality of terminals 2 are arranged in a row along the longitudinal direction. Each terminal 2 extends upward from the fixing portion 21 with a neck 22 that can swing in the transverse direction. The neck 22 extends upward to form two contact arms 23, and the two contact arms 23 protrude toward each other to form two contact portions 24 that protrude into the slot 11 for docking with the contact pads 1' of the docking element 200. The lower end of the fixing portion 21 also protrudes downward with two welding feet 25 and a connecting portion 26 located between the two welding feet 25 in the transverse direction. The welding feet 25 are used to extend downward and insert into through holes of a circuit board (not shown, the same below).

[0040] As Figure 5 , Figure 7 and Figure 9As shown, the fixing part 21 is arranged in a plate shape, the thickness direction of the fixing part 21 is consistent with the longitudinal direction, at least one first protruding part 213 is convexly provided along the thickness direction of the fixing part 21 and at least two second protruding parts 214 with the convex direction opposite to that of the first protruding part 213 (in this embodiment, the number of the first protruding parts 213 is one, and the number of the second protruding parts 214 is two). The first protruding part 213 is at least partially located directly below the neck 22. The two second protruding parts 214 are respectively close to the opposite side edges of the fixing part 21 in the transverse direction, and the dimension of the first protruding part 213 extending in the transverse direction is greater than the dimension of the second protruding part 214 extending in the transverse direction. Specifically, the fixing part 21 of each terminal 2 has a positioning plate 211 and two holding arms 212 extending upward from the positioning plate 211. In the transverse direction, the two holding arms 212 are respectively located on the opposite sides of the neck 22. In the up-and-down direction, the length of the holding arm 212 of each terminal 2 is less than the length of the neck 22, and the length of the holding arm 212 is greater than the length of the solder leg 25. One first protruding part 213 is convexly provided in the thickness direction of the positioning plate 211, and the first protruding part 213 is longitudinally arranged in the transverse direction. One second protruding part 214 is convexly provided along the thickness direction of each of the two holding arms 212. The convex direction of the second protruding part 214 is opposite to the convex direction of the first protruding part 213. The second protruding part 214 is longitudinally arranged in the up-and-down direction, and each second protruding part 214 extends downward to the positioning plate 211. In other words, the upper part of each second protruding part 214 protrudes from a corresponding holding arm 212, and its lower part protrudes from the positioning plate 211. When the terminal 2 is held in the corresponding terminal groove 12, the first protruding part 213 and the second protruding part 214 respectively interfere with the opposite inner walls of the terminal groove 12 in the longitudinal direction. Two barbs 215 are convexly provided laterally on the side edge of each holding arm 212 away from the neck 22. The two barbs 215 on each holding arm 212 are spaced in the up-and-down direction. A convex bump 216 is further convexly provided between the two barbs 215 on each holding arm 212. The convex bump 216 has the same convex direction as the first protruding part 213 and jointly interferes with the inner wall of the same side of the terminal groove 12. Specifically, in the longitudinal direction, the convex bump 216 has the same convex direction and protruding distance as the first protruding part 213, so that the two convex bumps 216 of the two holding arms 212 and the first protruding part 213 can be coplanar to abut and interfere with the inner wall of the terminal 2.The barbs 215 of the two holding arms 212 in the transverse direction respectively interfere with the other two inner walls of the terminal groove 12. When the terminal 2 is installed in the terminal groove 12, the two convex bumps 216 and the first protruding part 213 in the longitudinal direction together interfere with one inner wall of the terminal groove 12, and the two second protruding parts 214 together interfere with the other inner wall of the terminal groove 12 in the longitudinal direction, so that during the installation of the terminal 2 in the terminal groove 12, the terminal 2 can be centered in the terminal groove 12 along the longitudinal direction. The barbs 215 of the two holding arms 212 in the transverse direction respectively interfere with the other two inner walls of the terminal groove 12, so that the terminal 2 is held in both the longitudinal direction and the transverse direction, and further the terminal 2 can be stably held in the corresponding terminal groove 12. The opposite two side edges of the positioning plate 211 in the transverse direction are respectively convexly provided with a limiting part 217. When the terminal 2 is installed in the terminal groove 12, the two limiting parts 217 respectively protrude out of the opposite two sides of the corresponding terminal groove 12 in the transverse direction, and in the up and down direction, the limiting parts 217 respectively abut against the bottom ends of the opposite two side walls of the terminal groove 12 in the transverse direction, so as to limit the excessive upward displacement of the terminal 2.

[0041] As Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 9 shown, each neck 22 extends upward from the upper end of the positioning plate 211, and the width of the upper and lower ends of the neck 22 in the transverse direction is greater than the width of the middle position of the neck 22. This not only avoids the breakage of the neck 22 at its upper and lower ends during the swinging process in the transverse direction, but also the smaller width of the middle position of the neck 22 in the transverse direction can increase the elasticity of the neck 22, thus facilitating the swinging of the neck 22 in the transverse direction. When the terminal 2 is fixed in the corresponding terminal groove 12, there are gaps between the neck 22 and the inner wall surfaces of the corresponding terminal groove 12 in both the longitudinal direction and the transverse direction, so that the neck 22 can freely move in the terminal groove 12 along the longitudinal direction and the transverse direction, ensuring that the neck 22 will not collide with the inner wall surface of the terminal groove 12 when swinging in the transverse direction.

[0042] As Figure 1 , Figure 5 , Figure 6 and Figure 9As shown, the two contact arms 23 of each terminal 2 are connected to the upper end of the neck 22, and the two contact arms 23 are arranged in a U shape (of course, in other embodiments, the shapes of the two contact arms 23 are not limited), and the length of the contact arm 23 is greater than or equal to the length of the neck 22 (in this embodiment, the length of the contact arm 23 is greater than the length of the neck 22). The width of the upper and lower ends of each contact arm 23 in the transverse direction is greater than the width of the middle position of the contact arm 23. In this way, not only can the elastic force of the contact arm 23 be increased to prevent the contact arm 23 from breaking at its upper and lower ends during the swinging process, but also the contact arm 23 can be offset more in the transverse direction to facilitate stable docking with the docking element 200.

[0043] As Figure 5 , Figure 6 and Figure 9 shown, each contact arm 23 has a contact portion 24. Along the transverse direction, the two contact portions 24 of each terminal 2 are arranged facing each other. The two contact portions 24 are respectively closer to the center of the slot 11 than the opposite inner side walls of the slot 11, and the distance between the contact portion 24 on the same side of the slot 11 and the inner side wall of the slot 11 is greater than 0.2 mm. In other words, the two contact portions 24 of each terminal 2 respectively protrude into the slot 11 from the opposite sides of the slot 11 in the transverse direction, and one side of each contact portion 24 closest to the center of the slot 11 has an abutting surface 241, and the distance between the abutting surface 241 and the inner side wall of the slot 11 on the same side is greater than 0.2 mm. One side of each contact portion 24 close to the center of the slot 11 also has an inclined surface 242, and the inclined surface 242 extends obliquely downward toward the center of the slot 11. The included angle α between the inclined surfaces 242 of the two contact portions 24 of each terminal 2 is less than 30° (in this embodiment, the included angle α between the inclined surfaces 242 of the two contact portions 24 is 26°). In this way, the inclined surface 242 can not only guide the docking element 200 into the space between the two contact portions 24, but also the included angle α less than 30° between the two inclined surfaces 242 can reduce the insertion force of the docking element 200, making it more convenient for the docking element 200 to be inserted between the two contact portions 24.

[0044] As Figure 1 , Figure 4 and Figure 9As shown, the positioning plate 211 extends downward and has two solder feet 25 for soldering to the circuit board. In the up and down direction, the solder feet 25, the positioning plate 211, and the neck 22 of the same terminal 2 are coplanar. The distances between the two solder feet 25 and the center line of the neck 22 are not equal. Specifically, in the horizontal direction, the distance between the two solder feet 25 is less than the distance between the two holding arms 212. And in the up and down direction, at least one of the solder feet 25 of the same terminal 2 is misaligned with the two holding arms 212 (in this embodiment, one of the two solder feet 25 is misaligned with the two holding arms 212, and the other solder foot 25 is directly below one of the holding arms 212. Of course, in other embodiments, both of the two solder feet 25 can be misaligned with the two holding arms 212). Moreover, one of the two solder feet 25 is closer to the center line of the neck 22 than the other solder foot 25. The lower end of the positioning plate 211 further protrudes with a connecting part 26 located between the two solder feet 25. The connecting part 26 is at least partially directly below the neck 22, and the center line of the neck 22 passes downward through the connecting part 26. Thus, when the terminal 2 is inserted into the terminal slot 12, the connecting part 26 is closer to the center of the terminal 2, enabling the terminal 2 to be inserted vertically upward into the terminal slot 12 without causing the terminal 2 to skew in the horizontal direction, thereby avoiding the offset of the terminal 2 during the insertion process. In the longitudinal direction, the solder feet 25 of adjacent terminals 2 are misaligned with each other, thus avoiding the situation where the distances between the solder feet 25 of adjacent terminals 2 are too close, which may cause solder bridging between the solder feet 25 of adjacent terminals 2.

[0045] As Figure 1 , Figure 5 and Figure 8As shown, a plurality of the terminals 2 include a plurality of positive terminals P arranged in continuous intervals to form a positive terminal group and a plurality of negative terminals N arranged in continuous intervals to form a negative terminal group. The positive terminal group includes at least 10 positive terminals P (in this embodiment, the positive terminal group includes 10 positive terminals P), and the negative terminal group includes at least 10 negative terminals N (in this embodiment, the negative terminal group includes 10 negative terminals N). The positive terminal group and the negative terminal group are arranged adjacent to each other in the longitudinal direction. The distance between the positive terminal group and the negative terminal group in the longitudinal direction is greater than the distance between any two adjacent positive terminals P in the positive terminal group and the distance between any two adjacent negative terminals N in the negative terminal group. Specifically, along the longitudinal direction, the ten positive terminals P are connected and arranged at intervals, and the contact portions 24 of the five positive terminals P away from the negative terminal group will simultaneously contact and conduct with one contact pad 1' on the same side of the docking element 200, and the contact portions 24 of the other five positive terminals P will simultaneously contact and conduct with another contact pad 1' on the same side of the docking element 200. Moreover, the contact portions 24 of the positive terminals P are abutted against the corresponding contact pads 1' through their cut surfaces. Similarly, along the longitudinal direction, the ten negative terminals N are connected and arranged at intervals, and the contact portions 24 of the five negative terminals N away from the positive terminal group will simultaneously contact and conduct with another contact pad 1' different from the above two contact pads 1' on the same side of the docking element 200, and the contact portions 24 of the other five negative terminals N will simultaneously contact and conduct with another contact pad 1' on the same side of the docking element 200. Moreover, the contact portions 24 of the negative terminals N are abutted against the corresponding contact pads 1' through their cut surfaces, so that one contact pad 1' can contact more terminals 2 at the same time, thereby increasing the current-carrying capacity of the docking element 200 and the electrical connector 100, facilitating the transmission of large currents. Also, because one contact pad 1' can be conductively connected to a plurality of terminals 2, the conductive path between the contact pad 1' and the electrical connector 100 is increased, thus avoiding the overheating of the electrical connector 100 during the transmission of large currents, which affects the electrical transmission between the electrical connector 100 and the docking element 200.

[0046] As Figure 1 , Figure 5 and Figure 6As shown, the docking element 200 is inserted into the slot 11 from top to bottom, and for each terminal 2 in the lateral direction, the two contact portions 24 of each terminal 2 extend into the slot 11 from opposite sides of the slot 11 and clamp the docking element 200, so that the two contact portions 24 of each terminal 2 are respectively docked with the contact pads 1' on the opposite two surfaces in the thickness direction (i.e., the lateral direction) of the docking element 200. Contact pads 1' are provided on the opposite two surfaces of the docking element 200 in the lateral direction (i.e., along the thickness direction of the docking element 200). Moreover, the docking element 200 has a second dimension D2 in the lateral direction (in this embodiment, the second dimension D2 is 1.57 mm, and it can have a manufacturing tolerance of plus or minus 0.13 mm). The first dimension D1 is greater than the second dimension D2, and the difference between the first dimension D1 and the second dimension D2 is greater than or equal to 0.4 mm (in this embodiment, the difference between the first dimension D1 and the second dimension D2 is 0.405 mm). In other words, the first dimension D1 is at least 0.4 mm larger than the second dimension D2. When the docking element 200 is inserted into the slot 11, the distance between the surface of the docking element 200 on the same side of the center line of the slot 11 and the inner side wall of the slot 11 in the lateral direction is greater than or equal to 0.2 mm. That is, when the docking element 200 is inserted into the slot 11, the distance between one surface of the docking element 200 and one inner side wall of the slot 11 opposite thereto in the lateral direction is greater than or equal to 0.2 mm.

[0047] As Figure 1 , Figure 5 , Figure 8 and Figure 11As shown, the contact pads 1' are respectively disposed on two surfaces of the docking element 200 along the thickness direction, and there are a plurality of the contact pads 1'. The plurality of contact pads 1' located on the same surface of the docking element 200 include at least one first contact pad 11' and at least one second contact pad 12' adjacent to each other along the longitudinal direction. The first contact pad 11' is docked with the positive terminal group, and the second contact pad 12' is docked with the negative terminal group. A first chamfer 111' is provided at the lower end of one side of the first contact pad 11' close to the second contact pad 12', and a second chamfer 121' is provided at the lower end of one side of the second contact pad 12' close to the first contact pad 11'. The first chamfer 111' and the second chamfer 121' are oppositely arranged along the longitudinal direction. Specifically, there are two first contact pads 11' and two second contact pads 12' located on the same surface of the docking element 200 and spaced apart along the longitudinal direction. The two first contact pads 11' are adjacent to each other and docked with the positive terminal group, and the two second contact pads 12' are adjacent to each other and docked with the negative terminal group. In other words, the plurality of contact pads 1' located on the same surface of the docking element 200 include two first contact pads 11' and two second contact pads 12' adjacent to each other along the longitudinal direction. The two first contact pads 11' located on the same side of the docking element 200 along the longitudinal direction are adjacent to each other, and one of the two first contact pads 11' close to the second contact pad 12' is provided with the first chamfer 111'. The first chamfer 111' is located at the lower end of this first contact pad 11' close to the second contact pad 12'. Similarly, the two second contact pads 12' located on the same side of the docking element 200 along the longitudinal direction are adjacent to each other, and one of the two second contact pads 12' close to the first contact pad 11' is provided with the second chamfer 121'. The second chamfer 121' is located at the lower end of this second contact pad 12' close to the first contact pad 11'. The first chamfer 111' and the second chamfer 121' are oppositely arranged, so that the distance between the lower ends of the adjacent first contact pad 11' and the second contact pad 12' along the longitudinal direction is greater than the distance between the upper ends of the adjacent first contact pad 11' and the second contact pad 12'. Moreover, the distance between the adjacent first contact pad 11' and the second contact pad 12' located on the same side of the docking element 200 along the longitudinal direction is greater than the distance between the adjacent two first contact pads 11' located on the same side of the docking element 200, and greater than the distance between the adjacent two second contact pads 12' located on the same side of the docking element 200.Each of the first contact pads 11' is docked with at least five of the positive terminals P. Further, at least five successively and spaced-apart positive terminals P in the positive terminal group are simultaneously in contact with two of the first contact pads 11' that face each other on opposite surfaces of the docking element 200, and the contact portion 24 of the positive terminal P is docked with the first contact pad 11' through a cut surface. Each of the second contact pads 12' is docked with at least five of the negative terminals N. Further, at least five successively and spaced-apart negative terminals N in the negative terminal group are simultaneously in contact with two of the second contact pads 12' that face each other on opposite surfaces of the docking element 200, and the contact portion 24 of the negative terminal N is docked with the second contact pad 12' through a cut surface.

[0048] Such as Figure 1 , Figure 5 , Figure 8 , Figure 11 and Figure 12As shown, a first conductive layer 2' is connected to the upper end of each of the first contact pads 11'. Along the thickness direction of the docking element 200, there is at least one first inner conductive layer 3' between the two first conductive layers 2' on the two surfaces of the docking element 200. A plurality of first conductive vias 4' penetrate and conduct the first conductive layer 2' and the first inner conductive layer 3' on the two surfaces of the docking element 200 along the thickness direction of the docking element 200. A second conductive layer 5' is connected to the upper end of each of the second contact pads 12'. The second conductive layer 5' is spaced from the first conductive layer 2' along the longitudinal direction, and there is at least one second inner conductive layer 6' between the two second conductive layers 5' along the transverse direction. The second inner conductive layer 6' is coplanar with the first inner conductive layer 3' in the transverse direction, and the second inner conductive layer 6' is spaced from the first inner conductive layer 3' along the longitudinal direction. A plurality of second conductive vias 7' penetrate and conduct the second conductive layer 5' and the second inner conductive layer 6' on the two surfaces of the docking element 200 along the thickness direction of the docking element 200. Along the thickness direction of the docking element 200, the outer sides of the first conductive layer 2' and the second conductive layer 5' on the two surfaces of the docking element 200 are both covered by a solder mask (not labeled, the same below), and the outer sides of the first contact pad 11' and the second contact portion 24 are not covered by the solder mask. Further, in this embodiment, along the thickness direction of the docking element 200, there are two first inner conductive layers 3' between the two first conductive layers 2' on the two surfaces of the docking element 200. The two first inner conductive layers 3' are stacked on each other along the thickness direction of the docking element 200. A plurality of the first conductive vias 4' penetrate and conduct the first conductive layer 2' and the two first inner conductive layers 3' on the two surfaces of the docking element 200 along the thickness direction of the docking element 200. Similarly, along the thickness direction of the docking element 200, there are two second inner conductive layers 6' between the two second conductive layers 5' on the two surfaces of the docking element 200. The two second inner conductive layers 6' are stacked on each other along the thickness direction of the docking element 200, and the two second inner conductive layers 6' correspond to the two first inner conductive layers 3' one by one in the longitudinal direction. In the longitudinal direction, any one of the second inner conductive layers 6' and the corresponding first inner conductive layer 3' are located on the same plane and are spaced from each other. A plurality of the second conductive vias 7' penetrate and conduct the second conductive layer 5' and the two second inner conductive layers 6' on the two surfaces of the docking element 200 along the thickness direction of the docking element 200.

[0049] As Figure 1 , Figure 5 , Figure 8 and Figure 11As shown, the lower end of the docking element 200 has a guiding section 8' and a clearance section 9' above the guiding section 8'. The guiding section 8' is used to guide the docking element 200 to be inserted into the slot 11. The first contact pad 11' and the second contact pad 12' are located above the clearance section 9', and the lower ends of the first contact pad 11' and the second contact pad 12' are flush. When the docking element 200 is inserted into the slot 11 obliquely, the clearance section 9' creates a gap between the first contact pad 11' and the negative terminal N, and a gap between the second contact pad 12' and the positive terminal P. And in the up and down direction, the distance from the lower end of the docking element 200 to the lower end of the first contact pad 11' is greater than or equal to 2.8 millimeters. In this embodiment, the distance from the lower end of the docking element 200 to the lower end of the first contact pad 11' is equal to 2.8 millimeters, and its manufacturing tolerance is plus or minus 0.05 millimeters.

[0050] In summary, the electrical connector 100 and the electrical connector assembly 1000 of the present utility model have the following beneficial effects:

[0051] (1) Each of the terminals 2 has the fixing portion 21, from which the neck portion 22 extends upward. There are gaps between the neck portion 22 and the inner wall surface of the corresponding terminal slot 12 in both the longitudinal direction and the transverse direction. Two contact arms 23 extend upward from the neck portion 22, and two contact portions 24 are respectively provided on the two contact arms 23 and protrude laterally into the slot 11 to clamp the docking element 200. In this way, the neck portion 22 can swing in the transverse direction. Even if the docking element 200 is obliquely inserted into the slot 11, the contact portion 24 of one of the contact arms 23 will be offset toward the side away from the center of the slot 11 under the action of the pushing force of the docking element 200, and the neck portion 22 will swing with the offset of the contact arm 23 and then drive the other contact arm 23 to offset toward the side close to the docking element 200, so that the docking element 200 can be stably clamped between the two contact portions 24 of the terminal 2, thus ensuring that the electrical connector 100 and the docking element 200 can be stably docked. Moreover, because in the longitudinal direction, the fixing portion 21 is provided with one first protruding portion 213 and two second protruding portions 214 with opposite protruding directions and respectively interfering with the two side walls of the terminal slot 12. The first protruding portion 213 is at least partially located directly below the neck portion 22, and the two second protruding portions 214 are respectively close to the opposite side edges of the fixing portion 21 in the transverse direction. Therefore, when the terminal 2 is inserted into the terminal slot 12, the terminal 2 will not be displaced in the longitudinal direction, thus ensuring that the terminal 2 is installed at the exact center of the corresponding terminal slot 12, preventing the terminal 2 from being inserted obliquely, and further preventing the terminal 2 from being installed out of position. In this way, the terminal 2 can be in direct contact with the docking element 200, thus ensuring that the electrical connector 100 and the docking element 200 can be stably docked.

[0052] (2) On one side edge of each of the holding arms 212 away from the neck 22, two of the barbs 215 are transversely protruded at upper and lower intervals, and the barbs 215 of the two holding arms 212 in the transverse direction respectively interfere with the two inner walls of the terminal groove 12. In this way, not only can the terminal 2 be held in the terminal groove 12 in the transverse direction, but also the displacement of the terminal 2 in the up and down direction is restricted; each of the holding arms 212 protrudes the convex packet 216 between the two barbs 215. The convex packet 216 has the same protruding direction as the first protruding portion 213 and jointly interferes with the inner wall on the same side of the terminal groove 12. In this way, the two convex packets 216 can be coplanar with the first protruding portion 213, and further, the two convex packets 216 and the first protruding portion 213 can together interfere and abut against one of the inner walls of the terminal groove 12 in the longitudinal direction, so as to offset the holding force of the two second protruding portions 214 against the other inner wall of the terminal groove 12, so that the terminal 2 can be centered in the terminal groove 12.

[0053] (3) The two welding feet 25 of two adjacent terminals 2 are arranged in a staggered manner, so that the distance between the welding feet 25 of two adjacent terminals 2 can be increased, and the situation of solder bridging during the welding process can be avoided; the lower end of the positioning plate 211 protrudes the connecting part 26. The connecting part 26 is located between the two welding feet 25, and the center line of the neck 22 passes downward through the connecting part 26. In this way, it can also be ensured that the terminal 2 does not deflect toward one side in the transverse direction, and further, the terminal 2 can be centered and inserted into the terminal groove 12, so as to prevent the terminal 2 from being skewed during the insertion into the terminal groove 12 and causing the contact part 24 of the terminal 2 to be displaced, ensuring that the docking between the contact part 24 and the contact pad 1' of the docking element 200 is not affected during assembly.

[0054] (4) The inclined surface 242 extends obliquely downward toward the center of the slot 11 from top to bottom, enabling the inclined surface 242 to guide the docking element 200 to be inserted downward between the two contact portions 24 of the terminal 2. Thus, it is convenient for the contact pad 1' of the docking element 200 to be docked with the contact portion 24. Moreover, the included angle α between the inclined surfaces 242 of the two contact portions 24 of each terminal 2 is less than 30°, which can also reduce the insertion force of the docking element 200, making it more convenient for the insertion of the docking element 200. The distance between the contact portion 24 and the inner side wall of the slot 11 on the same side of the slot 11 in the lateral direction is greater than 0.2 mm. In this way, the contact portion 24 is closer to the center of the slot 11 compared to the contact portion 24 of the conventional slot 11 connector. This makes the distance between the two contact portions 24 of one terminal 2 in the lateral direction smaller, enabling the two contact portions 24 of each terminal 2 to stably clamp and dock the two sides of the docking element 200, thereby making the docking between the electrical connector 100 and the docking element 200 more stable.

[0055] (5) In the lateral direction, the slot 11 has a first dimension D1, and the docking element 200 has a second dimension D2. The first dimension D1 is greater than the second dimension D2, and the difference between the first dimension D1 and the second dimension D2 is greater than or equal to 0.4 mm. Such a setting of the difference between the first dimension D1 and the second dimension D2 allows the docking element 200 to be inserted into the slot 11 at a larger inclination angle. Thus, the operator does not have to insert the docking element 200 into the slot 11 strictly in the vertical direction, which facilitates the operation of the operator. Moreover, it also enhances the anti-vibration effect of the terminal 2 and avoids poor contact caused by excessive vibration.

[0056] (6) At the lower end of the side of the first contact pad 11' close to the second contact pad 12', there is a first chamfer 111'. At the lower end of the side of the second contact pad 12' close to the first contact pad 11', there is a second chamfer 121'. The first chamfer 111' and the second chamfer 121' are arranged oppositely in the longitudinal direction. This can prevent the first contact pad 11' for transmitting the positive power supply from contacting the negative terminal N and the second contact pad 12' for transmitting the negative power supply from contacting the positive terminal P when the docking element 200 is obliquely inserted into the slot 11, thus avoiding the occurrence of a short circuit.

[0057] (7) The distance between the positive terminal group P and the negative terminal group N along the longitudinal direction is greater than the distance between two adjacent positive terminals P and the distance between two adjacent negative terminals N. In this way, the distance between the positive terminal group P and the negative terminal group N is further enlarged, which can further prevent the first contact pad 11' for transmitting the positive power supply from contacting the negative terminal N and the second contact pad 12' for transmitting the negative power supply from contacting the positive terminal P when the docking element 200 is obliquely inserted into the slot 11, avoiding short circuit and thus enabling the transmission of a larger current.

[0058] (8) The plurality of terminals 2 are all flat blanking terminals 2, and the plate surface of each terminal 2 is perpendicular to the longitudinal direction. In this way, more terminals 2 can be installed in the insulating body 1 along the longitudinal direction. Compared with a conventional power connector, more terminals 2 can be fixed on the insulating body 1 of the same size, thereby increasing the current-carrying capacity of the electrical connector 100 and enabling the electrical connector 100 to transmit a large current. Moreover, the cut surfaces of the two contact portions 24 of each terminal 2 are docked with the contact pads 1' on the two surfaces of the docking element 200 in its thickness direction; in this way, one contact pad 1' can be docked with the contact portions 24 of a plurality of terminals 2, further increasing the current-carrying path. When the electrical connector 100 transmits a large current, it can prevent the temperature of the electrical connector 100 from rising too fast and affecting the current-carrying performance of the electrical connector 100.

[0059] The above detailed description is only for the description of the preferred embodiments of the present invention and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the content of this creation specification and drawings are included in the patent scope of this creation.

Claims

1. An electrical connector for connecting with a docking element, characterized in that: include: An insulating body, which is concavely provided with a slot from top to bottom, the slot extending along the longitudinal direction, a plurality of terminal slots arranged along the longitudinal direction, and each of the terminal slots is connected to opposite sides of the slot along the transverse direction; A plurality of terminals are respectively held in a plurality of the terminal slots, each of the terminals having a fixing portion, a neck extending upward from the fixing portion, a gap between the neck and the inner wall surface of the corresponding terminal slot in the longitudinal direction and the transverse direction, two contact arms extending upward from the neck, two contact arms protruding toward each other to form two contact portions entering the slot, at least one first protruding portion and at least two second protruding portions protruding in the opposite direction to the first protruding portion protruding in the longitudinal direction of the fixing portion, the first protruding portion at least partially being located directly below the neck, the two second protruding portions being close to the opposite side edges of the fixing portion in the transverse direction, and the first protruding portion and the second protruding portion of each terminal respectively interfering with the opposite inner walls of the corresponding terminal slot in the longitudinal direction; When the docking element is inserted downward into the slot to dock with the terminal, the two contact portions of each terminal along the transverse direction clamp the docking element from two opposite surfaces of the slot.

2. The electrical connector according to claim 1, wherein: The fixing portion has a positioning plate and two retaining arms extending upward from the positioning plate, the two retaining arms are located on opposite sides of the neck along the transverse direction, the first protrusion is formed protruding from the thickness direction of the positioning plate, and the two retaining arms are respectively provided with a second protrusion protruding along their respective thickness directions, each of the second protrusions extends downward to the positioning plate, and the dimension of the first protrusion extending along the transverse direction is greater than the dimension of the second protrusion extending along the transverse direction.

3. The electrical connector according to claim 2, wherein: Along the transverse direction, two protruding thorns are laterally protruded from the edge of one side of each retaining arm away from the neck and are spaced apart in the up-down direction. Each retaining arm is provided with a bulge between the two protruding thorns. The bulge is provided in the same direction as the first protruding portion and interferes with the inner wall of the same side of the terminal groove. Along the transverse direction, the protruding thorns of the two retaining arms interfere with the other two inner walls of the terminal groove respectively.

4. The electrical connector according to claim 2, wherein: The positioning plate extends downward and has two welding feet. The two welding feet of two adjacent terminals are staggered with each other, and the distances between the two welding feet and the center line of the neck are not equal. A connecting portion is protruding from the lower end of the positioning plate, and the connecting portion is located between the two welding feet. The center line of the neck passes downward through the connecting portion.

5. The electrical connector according to claim 1, wherein: The distance between the contact portions located on the same side of the slot along the transverse direction and the inner wall of the slot is greater than 0.2 mm, and each of the contact portions has an inclined surface on a side close to the center of the slot, and the inclined surface extends obliquely from top to bottom toward the center of the slot, and the angle between the inclined surfaces of the two contact portions of each terminal is less than 30 degrees.

6. An electrical connector assembly, comprising the electrical connector and the docking element docked with each other, characterized in that: The electrical connector has an electrical connector as described in any one of claims 1 to 5, the plurality of terminals including a plurality of positive terminals arranged in a continuous interval to form a positive terminal group and a plurality of negative terminals arranged in a continuous interval to form a negative terminal group, and the positive terminal group and the negative terminal group are arranged adjacent to each other in the longitudinal direction, and both surfaces of the docking element along the transverse direction are provided with at least one first contact pad and at least one second contact pad adjacent to each other in the longitudinal direction, the first contact pad is connected to the positive terminal group, and the second contact pad is connected to the negative terminal group.

7. The electrical connector assembly according to claim 6, wherein: A first chamfer is provided at the lower end of the first contact pad near the second contact pad, and a second chamfer is provided at the lower end of the second contact pad near the first contact pad. The first chamfer is opposite to the second chamfer in the longitudinal direction.

8. The electrical connector assembly according to claim 6, wherein: The positive terminal group includes at least 10 positive terminals, the negative terminal group includes at least 10 negative terminals, the distance between the positive terminal group and the negative terminal group along the longitudinal direction is greater than the distance between any two adjacent positive terminals and the distance between any two adjacent negative terminals, the first contact pad and the second contact pad are located on the same surface of the docking element and are spaced apart along the longitudinal direction, the two first contact pads are adjacently arranged and connected to the positive terminal group, and the two second contact pads are adjacently arranged and connected to the negative terminal group.

9. The electrical connector assembly according to claim 6, wherein: The plurality of terminals are flat blank terminals, and the plate surface of each terminal is perpendicular to the longitudinal direction, and the cut surfaces of the two contact portions of each terminal are in contact with the first contact pad or the second contact pad on the two surfaces of the docking element in its thickness direction.

10. The electrical connector assembly according to claim 6, wherein: The slot has a first size along the transverse direction, and the docking element has a second size, the first size is greater than the second size, and a difference between the first size and the second size is greater than or equal to 0.4 mm.

11. An electrical connector assembly, characterized in that: include: An electrical connector, comprising an insulating body, wherein the insulating body is provided with a slot recessed from top to bottom, the slot extending in a longitudinal direction, a plurality of terminals arranged in the slot at intervals in the longitudinal direction, each of the terminals having a fixed portion, a neck extending upward from the fixed portion and capable of swinging in a transverse direction perpendicular to the longitudinal direction, the neck extending upward to form two contact arms, the two contact arms protruding toward each other to form two contact portions protruding into the slot, at least one first protruding portion and at least two second protruding portions protruding in the opposite direction to the first protruding portion protruding from the fixed portion in the longitudinal direction, the first protruding portion at least partially being located directly below the neck, the two second protruding portions being close to opposite side edges of the fixed portion in the transverse direction, the plurality of terminals comprising a plurality of positive terminals arranged in a row to form a positive terminal group and a plurality of negative terminals arranged in a row to form a negative terminal group, the positive terminal group and the negative terminal group being arranged adjacently in the longitudinal direction; A docking element is inserted into the slot from top to bottom, and both surfaces of the docking element in the lateral direction are provided with at least one first contact pad and at least one second contact pad adjacent to each other along the longitudinal direction, the first contact pad is connected to the positive terminal group, and a first chamfer is provided at the lower end of the first contact pad on a side close to the second contact pad, the second contact pad is connected to the negative terminal group, and a second chamfer is provided at the lower end of the second contact pad on a side close to the first contact pad, and the first chamfer and the second chamfer are arranged opposite to each other along the longitudinal direction.

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