Electrical connector

Abstract

An electrical connector includes an insulating body with a slot and a plurality of power terminals. The power terminals include overlapping outer terminals and inner terminals. The inner terminals include a first fixing portion and a first elastic portion extending obliquely from the first fixing portion. The outer terminals include a second fixing portion and a second elastic portion extending from the second fixing portion. The second fixing portion is attached to the outside of the first fixing portion and is fixed to the insulating body together. The end of the first elastic portion has a first contact portion protruding into the slot. The end of the second elastic portion is cut into a second contact portion and an abutment portion arranged along the extension direction of the slot. The first and second contact portions are arranged along the extension direction, and the first contact portion can abut against the abutment portion outwards. This allows for the transmission of large currents, simplifies the connector structure, and increases mechanical reliability.

Description

Technical Field

[0001] The present invention relates to an electric connector. Prior Art

[0002] To transmit high currents, current card-edge hybrid power connectors utilize dual-layer power terminals. These terminals, consisting of inner and outer terminal plates, not only increase current transmission but also strengthen the support between the two terminals. However, as currents increase and the price of power connectors decreases, conventional conductive terminals are no longer sufficient.

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

[0004] The present application provides an electrical connector capable of transmitting large currents.

[0005] To achieve the above-mentioned purpose, the present application may adopt the following technical solution: an electrical connector, comprising an insulating body and a plurality of power terminals fixed to the insulating body, the insulating body being provided with a mating surface and a card slot penetrating the mating surface, the card slot having an insertion direction and an extension direction; the power terminals comprising an outer terminal and an inner terminal stacked on each other, the inner terminal comprising a first fixing portion and a first elastic portion extending obliquely from the first fixing portion, the outer terminal comprising a second fixing portion and a second elastic portion extending from the second fixing portion, the second fixing portion being adhered to the outer side of the first fixing portion and being jointly fixed to the insulating body, the end of the first elastic portion being provided with a first contact portion protruding into the card slot, the end of the second elastic portion being cut into a second contact portion and an abutting portion arranged along the extension direction, the second contact portion and the first contact portion being arranged along the extension direction, and the first contact portion being able to abut outward against the abutting portion.

[0006] Compared with the prior art, the present invention has the following beneficial effects: the first contact portion of the inner terminal of the present invention can abut against the abutment portion of the outer terminal, so that the power connector can not only increase current transmission but also has a simple structure and increased mechanical reliability. Simple diagram description

[0007] Figure 1 is a perspective view of the electrical connector of the present invention; Figure 2 is a perspective view of Figure 1 from another angle; Figure 3 is an exploded perspective view of the electrical connector of Figure 1; Figure 4 is a perspective view of the power terminal in Figure 3; Figure 5 is a perspective view of Figure 4 from another angle; Figure 6 is an exploded perspective view of the power terminal in Figure 4; Figure 7 is a left side view and a front view of the inner terminal in Figure 6; Figure 8 is a left side view and a front view of the outer terminal in Figure 6; and FIG9 is a left side view, a front view, a right side view and a rear view of the power terminal in FIG4 . Implementation Method

[0008] The present invention discloses an electrical connector 100, a hybrid card-edge connector with both power and signal terminals. Each power terminal is constructed from two stacked metal sheets, enhancing current transmission. The signal terminals are relatively small. As shown in Figures 1-3, the electrical connector 100 includes an insulating body 10, power terminals 20, and signal terminals 30. The insulating body has a mating surface 101 and a slot 11 extending through the mating surface 101. The slot has both a mating direction and an extension direction. As seen in the figures, the power and signal terminals are arranged along the extension direction of the slot 11. The power terminal 20 is mounted on the left side of the slot 11, and the signal terminal 30 is mounted on the right side. The insulating body 10 has a power portion 121 on the left side and a signal portion 122 on the right side. The power portion 121 has power terminal holes 131 on either side of the slot. These large-sized holes extend horizontally through the outer side of the insulating body to enhance heat dissipation. The signal portion 122 defines signal terminal holes 132 on both sides of the slot.

[0009] As shown in Figures 5 to 9 , the power terminal 20 includes an inner terminal 21 and an outer terminal 22 stacked together. The inner terminal 21 includes a first fixing portion 211 and a first elastic portion 212 extending obliquely from the first fixing portion. The outer terminal 22 includes a second fixing portion 221 and a second elastic portion 222 extending from the second fixing portion 221. The second fixing portion 221 adheres to the outer side of the first fixing portion 221 (as clearly visible in Figure 8 ). Both terminals are secured to the insulating body 10. A first contact portion 213 is provided at the end of the first elastic portion 212, which protrudes into the card slot 11. The end of the second elastic portion 222 is cut into a second contact portion 223 and an abutment portion 224 arranged along the extension direction. The second contact portion 223 is aligned with the first contact portion 213 along the extension direction. When the first contact portion 213 tilts outward after the docking card is inserted, it abuts against the abutment portion 224. This creates two contact portions between the inner and outer terminals, enhancing current transmission. At the same time, the abutting portion 224 can abut against the outer side of the first contact portion 213, thereby preventing the first contact portion 213 from tilting excessively backward.

[0010] More specifically, the first elastic portion 213 of the inner terminal 20 is closer to a unilaterally tilted asymmetric structure. This allows the first and second contact portions 213 and 223 to be aligned along the extension direction, allowing them to simultaneously contact the docking card and form a current path. As shown in FIG7 , the first elastic portion 212 has two opposing side edges: a first side edge 2121 and a second side edge 2122. The first side edge 2121 has a greater inclination angle than the second side edge 2122, resulting in the first contact portion 2123 at its distal end being located at the distal end of the tapered first elastic portion 213 and adjacent to the first side edge. As can be seen from the figure, the second side edge 2122 is coplanar with the side edge of the first contact portion 213. In other words, when viewed perpendicular to the insertion direction and the extension direction, the first side edge of the first elastic portion and the first contact portion are linear and perpendicular to the extension direction. The first contact portion 213 extends from the end of the first elastic portion 212 at the same inclination angle and then bends outward in an arc shape, thereby forming a contact portion protruding into the slot, specifically a contact point or line protruding in an arc shape.

[0011] The first contact portion 213 is provided with an elongated hole 215 extending along its inner and outer surfaces. The hole 215 extends in the insertion direction but does not penetrate the contact portion in that direction. The first fixing portion 211 further bends outward to form an offset portion 216 and a first soldering portion 217 extending downward from the offset portion. The first soldering portion has two eyelet-shaped pins for insertion into a circuit board. Ribs 218 extending along the extension direction are formed on both sides of the offset portion 216 adjacent to the first soldering portion.

[0012] The second contact portion 223 is provided with an elongated hole 225 extending through its inner and outer surfaces. The elongated hole extends in the insertion direction but does not penetrate the second contact portion 223 in this direction. The abutment portion 224 extends from the end of the second resilient portion 222 at the same angle and then bends outward in an arc shape, forming an arc-shaped protrusion that protrudes toward the slot. As shown in FIG9 , the abutment portion 224 generally mates with the first contact portion. When the first contact portion moves away from the slot, it abuts against the contact portion 224. The second contact portion 223 bends inward in an arc shape from the end of the second resilient portion 222, thereby aligning the first and second contact portions along the extension direction.

[0013] The second fixing portion 221 extends downwardly to form a second soldering portion 227, which has two eyelet-shaped pins for insertion into a circuit board. Ribs 228 protruding along the extension direction are provided on both sides of the second fixing portion 227, adjacent to the second soldering portion 227. The first and second fixing portions are provided with holes 230, which are soldered together. As can be seen from the figure, the first fixing portion 211 has protruding interference portions 219 on its two opposing side edges. The second fixing portion 221 extends downwardly from the first fixing portion 211, and its two opposing side edges are not provided with protruding interference portions. The second fixing portion is provided with outwardly protruding stamped lugs 231, which can be fastened to the insulating body. The first fixing portion 211 is rigidly interfering with the insulating body via the protruding interference portions 229.

[0014] 9 , viewed along the longitudinal direction, the width of the second contact portion 224 is greater than that of the abutting portion 224, and the width of the first contact portion 213 is also greater than that of the abutting portion 224. As shown in FIG2 , the soldering portions of the power terminals are arranged in four rows, and the soldering portions of the signal terminals are arranged in two rows.

[0015] The above embodiments are preferred embodiments of the present invention, but not all embodiments. Any equivalent changes made to the technical solutions of the present invention by persons of ordinary skill in the art after reading the specification of the present invention are covered by the claims of the present invention.

[0016] 100:Electrical connector 212: first elastic portion 222: Second elastic portion 10: Insulation body 2121: first side edge 223: Second contact portion 101: Docking surface 2122: Second side edge 224:Butt part 11: Card slot 213: First contact portion 225: Longitudinal hole 121: Power supply 215: Longitudinal hole 227: Second welding part 122:Signal location 216: offset 228: ribs 131: Power terminal hole 217: First welding part 230: Hole 132: Signal terminal hole 218: ribs 231: Stamped lugs 20: Power terminal 219: Protruding interference part 21: Inner terminal 22: Outer terminal 211: First fixing portion 221: Second fixing portion

Claims

1. An electrical connector, comprising an insulating body and a plurality of power terminals fixed to the insulating body, the insulating body having a mating surface and a slot penetrating the mating surface, the slot having an insertion direction and an extension direction; the power terminals including outer terminals and inner terminals stacked on each other, the inner terminals including a first fixing portion and a first elastic portion extending obliquely from the first fixing portion, the outer terminals including a second fixing portion and a second elastic portion extending from the second fixing portion, the second fixing portion covering the outer side of the first fixing portion and jointly fixed to the insulating body, wherein... The end of the first elastic part is provided with a first contact part protruding into the slot. The end of the second elastic part is cut into a second contact part and an abutment part arranged along the extension direction. The second contact part and the first contact part are arranged along the extension direction. The first contact part can abut against the abutment part outward. The abutment part and the second contact part are located at the same end of the second elastic part. The first contact part is located at the end of the first elastic part. When viewed along the direction of the overlapping of the inner and outer terminals, the first elastic part is entirely located within the range of the second elastic part.

2. The electrical connector as claimed in claim 1, wherein, The first elastic portion has opposing first side edges and second side edges, with the first side edge having a greater inclination angle than the second side edge. Thus, the first contact portion is located at the end of the tapered first elastic portion and is adjacent to the first side edge.

3. The electrical connector as claimed in claim 2, wherein, Viewed along the longitudinal direction, the second contact portion protrudes into the slot compared to the abutting portion.

4. The electrical connector as claimed in claim 1, wherein, The first contact portion is provided with a longitudinal hole that penetrates its inner and outer surfaces. The longitudinal hole extends along the insertion direction but does not penetrate the first contact portion in the insertion direction. The second contact portion is provided with a longitudinal hole that penetrates its inner and outer surfaces. The longitudinal hole extends along the insertion direction but does not penetrate the second contact portion in the insertion direction.

5. The electrical connector as claimed in claim 1, wherein, Viewed perpendicular to the insertion direction and the extension direction, the first side edge of the first elastic portion and the first contact portion is straight and perpendicular to the extension direction.

6. The electrical connector as claimed in claim 1, wherein, Along the extension direction, the width of the second contact portion is greater than the width of the abutment portion.

7. The electrical connector as claimed in claim 1, wherein, Along the extension direction, the width of the first contact portion is greater than the width of the abutment portion.

8. The electrical connector as claimed in claim 1, wherein, The first and second fixing parts are provided with holes, and the holes are welded together by solder.

9. The electrical connector as claimed in claim 1, wherein, The inner terminal includes an offset portion bent inward from the first fixing portion and a first welding portion extending from the offset portion in a direction away from the mating surface, the first welding portion having two pinhole-shaped leads; the outer terminal includes a second welding portion extending from the second fixing portion in a direction away from the mating surface, the second welding portion having two pinhole-shaped leads.

10. The electrical connector as claimed in claim 9, wherein, The first fixing part has protruding interference parts on its two opposite edges, and the second fixing part has outwardly stamped lugs.

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