Power connector

Abstract

A power connector includes a longitudinal body and a plurality of power terminal assemblies, each of which includes a first terminal, a second terminal, a mounting member and a plurality of fasteners, the body being provided with a clamping groove extending in the longitudinal direction; each of the first and second terminals includes a base and an elastic arm extending from the base, the distal end of the elastic arm being provided with a contact portion facing the clamping groove; the mounting member is provided with opposite first and second surfaces, the base of the first terminal being attached to the first surface of the mounting member and being fixed by one of the fasteners, the base of the second terminal being attached to the second surface of the mounting member and being fixed by another of the fasteners, the mounting member being mounted and fixed to the body, and the bases of the first and second terminals being exposed between the body and the mounting member. According to the present application, the first and second terminals are respectively mounted on the two opposite surfaces of the mounting member, the exposed space of the first and second terminals is increased, and the heat dissipation effect is improved.

Description

Technical Field

[0001] This invention relates to a power connector. Background Technology

[0002] A power supply unit (PSU) is a power conversion device whose main function is to convert alternating current (AC) into low-voltage, stable direct current (DC). The DC power is then supplied to the motherboard via the gold fingers of a connector plate, which has a mating edge-type power connector. To achieve higher power, current is currently increased by increasing the number of metal contacts on each terminal and connecting them in parallel. For example, in the connector disclosed in CN109326909A, the fixed ends of the first, second, third, and fourth pins of the second and third terminals intersect each other and pass through a plastic connecting block to connect to the tail. The connecting block connects the individual pins into a modular terminal, thereby enhancing the overall connection stability. However, as the transmitted current increases, the temperature inevitably increases, and the four pins being embedded within the connecting block relatively reduces the heat dissipation effect. Summary of the Invention

[0003] The technical solution to be solved by the present invention is to provide a power connector that can improve the high current efficiency of power terminals.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a power connector, comprising a longitudinally elongated body and a plurality of power terminal assemblies, wherein the power terminal assembly includes a first terminal, a second terminal, a mounting member, and a plurality of fixing members; the body is provided with a slot extending along the longitudinal direction; each of the first terminal and the second terminal includes a base and an elastic arm extending from the base, the end of the elastic arm being provided with a contact portion facing the slot; the mounting member is provided with opposing first surfaces and second surfaces; the base of the first terminal is attached to the first surface of the mounting member and fixed by one of the fixing members; the base of the second terminal is attached to the second surface of the mounting member and fixed by another fixing member; the mounting member is mounted and fixed to the body, and the bases of the first terminal and the second terminal are exposed between the body and the mounting member.

[0005] Compared with the prior art, the first and second terminals of the present invention are respectively mounted on two opposite surfaces of the mounting component, increasing the exposed space of the first and second terminals and enhancing the heat dissipation effect. Attached Figure Description

[0006] Figure 1 This is a perspective view of the power connector according to the first embodiment of the present invention.

[0007] Figure 2 yes Figure 1 A cross-sectional view along the dashed line AA.

[0008] Figure 3 yes Figure 1 A partial top view.

[0009] Figure 4 yes Figure 1 A three-dimensional exploded view.

[0010] Figure 5 yes Figure 4 A three-dimensional view of the insulating body from another angle.

[0011] Figure 6 This is a 3D view of the power terminal assembly.

[0012] Figure 7 yes Figure 6 A three-dimensional exploded view.

[0013] Figure 8 yes Figure 7 Another perspective of the exploded 3D view.

[0014] Figure 9 This is a front view of the first terminal.

[0015] Figure 10 This is a rear view of the first terminal.

[0016] Figure 11 This is an exploded perspective view of the power terminal assembly, where the mounting component is another embodiment 1.

[0017] Figure 12 yes Figure 11 Partial exploded 3D view of the mounting components and fasteners.

[0018] Figure 13 This is an exploded perspective view of the power terminal assembly, where the mounting component is another embodiment 2.

[0019] Figure 14 yes Figure 13 A more detailed 3D view of the power connector.

[0020] Figure 15 This is a cross-sectional view of the power connector according to the second embodiment of the present invention.

[0021] Figure 16 yes Figure 15 A 3D view of the power supply terminal assembly.

[0022] Figure 17 yes Figure 16 A three-dimensional view from another angle.

[0023] Figure 18 yes Figure 16 A three-dimensional exploded view.

[0024] Figure 19 yes Figure 18 Another perspective of the exploded 3D view.

[0025] Explanation of main component symbols Power connector: 100, Power connector: 200, Body / Insulating body: 10, Mutation surface: 110, Slot: 11, Power slot: 111, Signal slot: 112, Side wall: 12, Terminal slot: 131, Terminal hole: 132, Recess: 133, Heat dissipation hole: 14, Power terminal assembly: 20A, First terminal: 20, Base: 201, Flexible arm: 202, Pin: 203, Contact: 204, Outer terminal piece: 21, Middle terminal piece: 22, Inner terminal piece: 23, Base: 211, 221, 231, Flexible arm: 212, 222, 232, Contact / First contact portion: 214, Contact portion / second contact portion: 224, Contact portion / third contact portion: 234, End portion: 215, 225, 235, Through hole: 241, 242, 243, Groove: 251, Second terminal: 30, Base: 301, Flexible arm: 302, Connector portion: 303, Contact portion: 304, First contact portion: 315, Second contact portion: 325, Third terminal: 34, Fourth terminal: 35, Mounting member: 40, First surface: 41, Second surface :42, Fixing hole: 43, Limiting part: 44, Fixing groove: 45, Positioning post: 46, Fixing part: 50, Copper nail: 51, Cap: 511, Metal sheet: 52, Base plate: 521, Arm: 522, Arm: 53, Insulating body: 60, Outer terminal piece: 61, Elastic arm: 611, Base: 612, Through hole: 613, Inner terminal piece: 62, Mounting part: 63, First surface: 631, Second surface: 632, Copper nail: 64, Side: A1, A2, B1, B2. Detailed Implementation

[0026] Figures 1-10 The first embodiment of the invention is shown. The invention is a card-edge type power connector capable of transmitting high currents, up to 3200-4000 watts. This power connector is generally used to connect to a PSU with a card plate having gold fingers. See also... Figures 1-3 As shown, the power connector 100 includes a longitudinally elongated body 10. The body is generally made of insulating material to form an insulating body. The body 10 has a mating surface 110 and a slot 11 extending along the longitudinal direction. The slot 11 penetrates the mating surface 110. Multiple terminals 20 and 30 are arranged on both sides of the slot, with each row of terminals arranged along the longitudinal direction. In this embodiment, the slot consists of two parts: a power slot 111 near the left side and a signal slot 112 near the right side. The longitudinal direction can also be referred to as the left-right direction. Figures 4-5The side walls 12 on both sides of the power card slot are provided with multiple terminal slots 131, and the side walls on both sides of the signal card slot are provided with multiple terminal holes 132. The width of the terminal slot 131 (i.e., the dimension along the longitudinal or left-right direction) is greater than the width of the terminal hole 132. The side walls are provided with two rows of heat dissipation holes 14 that penetrate the side walls in the transverse direction at each corresponding terminal slot 131. A row of first terminals 20 and a row of second terminals 30 are respectively provided on both sides of the power card slot 111, and a row of third terminals 34 and a row of fourth terminals 35 for signal transmission are respectively provided on both sides of the signal card slot. The first and second terminals 20 and 30 are respectively accommodated in the terminal slots 131, and the third and fourth terminals 34 and 35 are respectively accommodated in the terminal holes 132. In this embodiment, the direction perpendicular to the side wall 12 is transverse, and the first and second terminals 20 and 30 are aligned with each other in the transverse direction. In this way, the first and second terminals can be fixed to the mounting parts first to form a terminal assembly, and then assembled into the terminal slots 131 of the body 10.

[0027] More specifically, in this embodiment, see Figures 6-7 As shown, each of the first and second terminals includes an outer terminal piece 21, a middle terminal piece 22, and an inner terminal piece 23, each terminal piece being formed by stamping copper plate. Note that in this embodiment, the first and second terminals have the same structure; therefore, the second terminal is not specifically described or labeled, but only briefly described where distinction is needed. The power connector in this embodiment is a vertical connector. Figures 15-19 This illustrates a right-angle connector. For ease of description, with the slot 11 as a reference, the part facing the slot 11 is considered the inner part, the part of the slot 11 near the mating surface 110 is considered high, and the part near the bottom surface is considered low. The direction perpendicular to the sidewall 12 is considered lateral. Each of the outer, middle, and inner terminal pieces includes a base 211, 221, 231 and multiple elastic arms 212, 222, 232 extending from the base. The ends of the elastic arms are provided with contact portions 214, 224, 234 facing the mating groove. In this embodiment, the three elastic arms are independent of each other, but their roots are connected to the base. The number of elastic arms can be increased or decreased as needed. The base of each of the three terminal pieces is provided with two through holes 241. The mounting member 40 is provided with fixing holes 43 on its first surface 41. After the bases of the three terminal pieces are stacked together, the fixing member 50 in the form of copper nails 51 passes through the circular through holes 241 of the first and second terminals and is fixed in the fixing holes 43 of the first surface 41 of the mounting member. Similarly, the second terminal 30 is fixed to the second surface 42 of the mounting member by means of another copper pin 51, which will not be described in detail. The mounting member 40 may be made of insulating material, conductive material, or conductive plastic material. The cap 511 of the copper pin 51 is exposed outside the power terminal assembly 20A, combined with... Figure 5As shown, the inner wall of the terminal slot 131 is further provided with two recesses 133 on the side near the bottom. When the power terminal assembly 20A is assembled into the terminal slot 131, the cap 511 is precisely fixed in the recesses 133. Figure 2 The cross-sectional view shows the positional relationship of the power terminal assembly 20A within the terminal slot, with the two copper pins 51 not in contact with each other.

[0028] For further details, see Figures 6-7 As shown, the spacing between adjacent elastic arms 202 is consistent. The mounting part 40 has outwardly protruding limiting parts 44 on its first and second surfaces. The limiting parts 44 are inserted into the gap between the elastic arms to facilitate the limiting function during assembly.

[0029] See Figures 11-12 As shown, this is another embodiment 1 of the fastener 50. The fastener consists of two stamped metal sheets 52. Each metal sheet 52 includes a base 521 and a pair of retaining arms 522 bent out from both sides of the base 521. The mounting member 40 has two fixing grooves 45 on its bottom surface. The base 521 is fixed in the corresponding fixing groove 45 by means of its barbs. The pair of retaining arms 522 pass through the through holes 242 provided at the base of the three terminal pieces, and then bend and fasten to the base of the outer terminal piece 21. The retaining arms 522 are vertical plates, and the through holes 242 are bone-shaped with widening ends to facilitate the passing of the retaining arms 522 through the through holes 242.

[0030] See Figures 13-14 As shown, this is another embodiment 2 of the fixing member. The fixing member consists of a pair of retaining arms 53 bent from both sides of the base 211 of each outer terminal piece 21. The retaining arms are inserted inward and fixed to the mounting member 40. In this embodiment, the middle and inner terminal pieces 22 and 23 have grooves 251 on the edge of their bases. The retaining arms 53 pass through the grooves 251 and are fixed to the mounting member 40, which not only tightly fixes the three terminal pieces, but also facilitates the alignment of the three terminals. The limiting part 44 of the mounting member 40 can be inserted into the gap between adjacent elastic arms and presses downward against the upper edge of the base. The limiting post 46 protruding from the first and second surfaces of the mounting member passes through the through holes 243 provided at the base of the three terminal pieces, thereby further positioning the three terminal pieces. The limiting post 46 has an elliptical interface.

[0031] See Figure 7 and Figure 2As shown, the outer terminal piece 21 includes a base 211, three elastic arms 212 extending upward from the base, and three contact portions 213 extending downward from the base. The three elastic arms are arranged in a parallel but spaced-apart manner and are located in the same plane. The base 211 is an integral, unseparated portion. The ends of the elastic arms 212 are folded downward toward the slot to form hook-shaped end portions 215. The hook-shaped protrusions constitute the contact portion 214, which is defined here as the first contact portion 214. In this embodiment, the width of the end portion 215 decreases along its longitudinal direction and is offset to one side. The intermediate terminal piece 22 includes a base 221, three elastic arms 222 extending upward from the base, and three contact portions 223 extending downward from the base. The three elastic arms are arranged in a parallel but spaced-apart manner and are located in the same plane. The base is integrally connected without separation. The ends of the elastic arms are curved towards the slot to form arc-shaped end portions 225. The protruding portions of the arc-shaped portions constitute the contact portion 224, which is defined here as the second contact portion 224. In this embodiment, the width of the arc-shaped end portion 225 decreases along the longitudinal direction and is offset to one side. The inner terminal piece 23 includes a base 231, three elastic arms 232 extending upward from the base 231, and three contact portions 233 extending downward from the base. The three elastic arms 232 are arranged in a parallel but spaced-apart manner and are located in the same plane. The base 231 is integrally connected without separation. The ends of the elastic arms are curved towards the slot to form arc-shaped end portions 235. The protruding portions of the arc-shaped portions constitute the contact portion 234, which is defined here as the third contact portion 234. The definitions of the first, second, and third contact portions above do not have a sequential contact order; they are only used for ease of distinction and writing.

[0032] See Figure 9 As shown, the widths of the three end portions 215, 225, and 235 decrease relative to their corresponding elastic arms and are offset to one side. The end portion 215 of the outer terminal piece is offset to the right, and the end portion 235 of the inner terminal piece is located below the end portion 215 of the outer terminal piece; both have the same width and are positioned directly below it. The end portion 225 of the middle terminal piece is offset to the left and is located to the left of the two end portions 215 and 235 of the inner and outer terminal pieces. This arrangement forms a contact portion that engages... Figure 2 As shown, the third contact 234 is located below the first contact 214, and the second contact 224 is located on one (right) side of the first contact 214 and the third contact 214, and is positioned between the first contact 214 and the third contact 234 in the height direction. Because all three contacts simultaneously contact the same gold finger of the card, each terminal has stable three-point contact with the same gold finger, and even if one contact fails, good electrical conductivity can still be achieved. See also... Figure 10The side of the end portion 225 of the middle terminal piece protrudes along the longitudinal direction from one side of the elastic arm, while the end portion 215 of the outer terminal piece does not protrude. In this embodiment, the three end portions are staggered, so that the elastic arm can be extended as much as possible within a limited space, thereby reducing the positive force.

[0033] For more details, see Figure 2 As shown, the vertical distance between the first contact portion 214 and the second contact portion 224 in the height direction is 1 mm, and the vertical distance between the second contact portion 224 and the third contact portion 234 in the height direction is 1.2 mm. During the insertion of the card plate into the card slot 11, the contact heights may differ by 2.2 mm. (See also...) Figure 9 As shown, there is a first distance between the sides A1 and A2 of adjacent elastic arms, and a second distance between the side B1 of the first and third contact portions 214 and 234 and the side B2 of the second contact portion 224. The first distance is greater than the second distance, so that the width of the contact portion is maximized within a limited position range.

[0034] See Figure 2 As shown, the three bases are stacked tightly together. The elastic arm 212 of the outer terminal piece extends vertically upward from its base, and both are located in the same plane. The inner wall of the slot is slightly inclined outward. The roots of the elastic arms 222 and 232 of the middle and inner terminal pieces, which are connected to the base, are bent inward a short distance before extending vertically upward. This creates a space between the elastic arms in the inner, middle, and outer rows in the lateral direction. After the power supply card is inserted, the elastic arms in the inner, middle, and outer rows are offset outward. The pins of the three terminal pieces are arranged in three rows. To make efficient use of the main circuit board, the spacing between the three rows of pins is the same. The pins 213 and 223 of the outer and middle terminal pieces are bent outward first and then extend vertically downward. The pin 233 of the inner terminal piece is bent inward first and then extends vertically downward.

[0035] See Figure 3 As shown, from the docking direction, the end portion 215 of the outer terminal piece in the first terminal corresponds to the end portion 325 of the middle terminal piece in the second terminal, the end portion 225 of the middle terminal piece in the first terminal corresponds to the end portion 315 of the outer terminal piece in the second terminal, and the ends of the inner terminal pieces in the first and second terminals are longitudinally misaligned, so that the contact portions can be arranged accordingly.

[0036] See Figures 15 to 19The diagram illustrates a second embodiment of the present invention, showing a right-angled horizontal power connector 200. Each of the first and second terminals consists of two terminal pieces: an outer terminal piece 61 and an inner terminal piece 62. The inner and outer terminal pieces of the first terminal are first fixed to the first surface 631 of the mounting member 63 by copper nails 64, and the inner and outer terminal pieces of the second terminal are then fixed to the second surface 632 of the fixing member 63. The connectors are then inserted into the insulating body 60 from front to front. A through hole 613 is provided at the root where the elastic arm 611 connects to the base 612. A fixing member in the form of a copper nail 64 passes through the through hole 613 and is fixed to a fixing hole provided on the first surface of the mounting member.

[0037] The above embodiments are preferred embodiments of the present invention, but not all embodiments. Any equivalent changes to the technical solutions of the present invention made by those skilled in the art through reading this specification are covered by the scope of the claims of the present invention.

Claims

1. A power connector, comprising a longitudinally elongated body and a plurality of power terminal assemblies, the power terminal assembly including a first terminal, a second terminal, a mounting member, and a plurality of fixing members, the body having a slot extending longitudinally; each of the first terminal and the second terminal including a base and an elastic arm extending from the base, the end of the elastic arm having a contact portion facing the slot; characterized in that: The mounting component has a first surface and a second surface opposite to each other. The base of the first terminal is attached to the first surface of the mounting component and fixed by one of the fixing components. The base of the second terminal is attached to the second surface of the mounting component and fixed by another fixing component. The mounting component is installed and fixed to the body, and the bases of the first terminal and the second terminal are exposed between the body and the mounting component.

2. The power connector as described in claim 1, characterized in that: Each of the first terminal and the second terminal includes at least an inner terminal piece and an outer terminal piece, each of the inner terminal piece and the outer terminal piece includes the base and a plurality of the elastic arms extending from the base, the end of the elastic arm having a contact portion facing the slot.

3. The power connector as described in claim 1, characterized in that: Each of the first terminal and the second terminal includes at least an outer terminal piece, a middle terminal piece, and an inner terminal piece. Each of the outer, middle, and inner terminal pieces includes the base and a plurality of elastic arms extending from the base. The end of each elastic arm is provided with a contact portion facing the slot.

4. The power connector as described in claim 1, characterized in that: Each of the first terminal and the second terminal includes at least an outer terminal piece, a middle terminal piece, and an inner terminal piece stacked on top of each other.

5. The power connector as described in any one of claims 2 to 4, characterized in that: The fixing element is a copper nail; the base of the first and second terminals is provided with through holes, the copper nail passes through the through hole of the first terminal and is fixed to the first surface of the mounting element, and the copper nail passes through the through hole of the second terminal and is fixed to the second surface of the mounting element.

6. The power connector as described in claim 5, characterized in that: Laser spot welding is then performed on the outer side of the copper nail to further secure the copper nail to the mounting component.

7. The power connector as described in claim 3, characterized in that: The fastener is a pair of metal plates, each metal plate including a base plate and a pair of clamping arms bent out from both sides of the base plate. The base plate is fixed to the mounting member, and the clamping arms pass through the through holes provided in the first / second terminals and are fixed to the first / second surface of the mounting member.

8. The power connector as described in claim 7, characterized in that: The through-hole is a bone-like structure that extends in the height direction, is wide at both ends and narrow in the middle.

9. The power connector as described in claim 8, characterized in that: The middle terminal piece and the inner terminal piece are provided with grooves at the side edges of the base, and the arm passes through the grooves to fix the mounting piece.

10. The power connector as described in any one of claims 2 to 4, characterized in that: The fastener is a pair of arms that bend out from both sides of the base of each of the outer terminal pieces, and the arms bend inward to fix it to the mounting piece.

11. The power connector as claimed in claim 1, characterized in that: The mounting component is made of insulating material, conductive material, or conductive plastic material.

12. The power connector as claimed in claim 1, characterized in that: The mounting component is made of insulating material, conductive material, or conductive plastic material.

13. The power connector as claimed in claim 1, characterized in that: A through hole is provided at the root where the elastic arm connects to the base, and the fixing member passes through the through hole and is fixed to the mounting member.

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