A plug-in board type HDMI male connector

Abstract

The application discloses a plug-in board type HDMI male connector which comprises a metal shell, a protective rubber shell, a locking rubber shell and a terminal assembly. The side of the locking rubber shell away from the protective rubber shell is provided with a socket for inserting a circuit board. The plug-in board type HDMI male connector is connected with the circuit board in a plug-in mode, and the connection requirement between the HDMI male connector and the circuit board is lowered. Meanwhile, the metal terminal is connected with the PCB board, the wire layout of the corresponding position of the PCB board (the wire layout of the PCB board is pure copper, and the conductivity is much higher than that of the alloy material of the metal terminal), the cross section area of the connection part of the metal terminal and the PCB board is increased, the conduction resistance of the connection part is lowered, the gap between the metal terminals is formed due to the planar connection of the PCB board, the characteristic insulation impedance between the metal terminals is increased, and the high-frequency and high-speed performance of the connector is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a plug-in type HDMI male connector. Background Art

[0002] High Definition Multimedia Interface (HDMI) is a digital video / audio interface technology. It is a dedicated digital interface suitable for image transmission and is therefore widely used in electronic devices. With the continuous development of display technology, the transmission rate of image transmission is getting higher and higher. The transmission rate of HDMI 2.1 has reached 48Gbps. Therefore, the performance requirements for connectors for image transmission are getting higher and higher, requiring not only better materials and higher precision, but also more stringent process guarantees. However, the splint-type HDMI male connectors currently on the market are usually connected to the circuit board by welding. Due to the small pin spacing in the HDMI male connector, when welding the pins to the circuit board, there are high requirements for the solder joints between the pins and the circuit board. For example, the solder joints must be as smooth as possible, and in particular, tin tip burrs are not allowed, which causes many inconveniences. Summary of the Invention

[0003] The main purpose of the present invention is to provide a plug-in type HDMI male connector, aiming to reduce the connection requirements between the HDMI male connector and the circuit board.

[0004] To achieve the above-mentioned object, the present invention provides a plug-in board type HDMI male connector, which includes:

[0005] Metal housing;

[0006] A protective plastic shell is disposed in the metal shell, and the protective plastic shell has a plurality of first terminal slots;

[0007] A locking plastic shell connected to the protective plastic shell, wherein the locking plastic shell has a plurality of second terminal slots; and

[0008] The terminal assembly includes a fixed plastic shell and a plurality of metal terminals, wherein the fixed plastic shell is connected to the protective plastic shell and is used to fix the plurality of metal terminals, wherein one end of the plurality of metal terminals is disposed in the plurality of first terminal slots and the other end is disposed in the plurality of second terminal slots;

[0009] Wherein, a side of the locking plastic shell away from the protective plastic shell has a socket, and the socket is used for inserting a circuit board.

[0010] In one embodiment, the protective plastic shell has a main body and two first extensions extending outward from the same side of the main body. The locking plastic shell is provided with mounting holes for the two first extensions to extend into, and the protective plastic shell is clamped with the locking plastic shell through the two first extensions.

[0011] In one embodiment, the plug-in type HDMI male connector further includes a self-locking spring, which is mounted on the outer peripheral surface of the locking plastic shell. The self-locking spring includes an enclosing portion and two second extension portions extending outward from the same side of the enclosing portion. A clamping portion is provided at the end of the second extension portion, and the clamping portion extends into the mounting hole to clamp with the circuit board inserted into the socket.

[0012] In one embodiment, the locking plastic shell includes a main body and a positioning platform connected to the main body, the positioning platform is located on a side of the locking plastic shell close to the protective plastic shell, and the enclosing portion of the self-locking spring is sleeved on the outer peripheral surface of the positioning platform.

[0013] In one embodiment, the terminal assembly further includes a first PCB board, the multiple metal terminals are respectively located on opposite sides of the first PCB board and welded to the first PCB board, and the fixed plastic shell is sleeved on the first PCB board and the multiple metal terminals.

[0014] In one embodiment, the terminal assembly further includes two second PCB boards, which are arranged on opposite sides of the first PCB board, the multiple metal terminals are located between the first PCB board and the second PCB board, and the fixed plastic shell is sleeved on the two second PCB boards, and the fixed plastic shell welds the metal terminals to the first PCB board through the two second PCB boards.

[0015] In one embodiment, a middle portion of the metal terminal is bent to form a slot, and the slot is engaged with the first PCB board.

[0016] In one embodiment, a plurality of solder pads are provided on the first PCB board and / or the second PCB board, and the plurality of metal terminals abut against the first PCB board and the second PCB board and correspond one-to-one to the plurality of solder pads.

[0017] In one embodiment, a sliding groove is provided on the inner side of the first extension portion, and a protrusion that slides in cooperation with the sliding groove is provided on the fixed plastic shell.

[0018] In one embodiment, the fixed plastic shell is provided with a protrusion, and the protective plastic shell is provided with a limiting groove that cooperates with the protrusion.

[0019] The plug-in type HDMI male connector of the present invention includes a metal shell, a protective plastic shell, a locking plastic shell and a terminal assembly. The protective plastic shell is arranged in the metal shell, and the protective plastic shell has a plurality of first terminal slots; the locking plastic shell is connected to the protective plastic shell, and the locking plastic shell has a plurality of second terminal slots; the terminal assembly includes a fixed plastic shell and a plurality of metal terminals, and the fixed plastic shell is connected to the protective plastic shell, and the fixed plastic shell is used to fix the plurality of metal terminals, one end of the plurality of metal terminals is arranged in the plurality of first terminal slots, and the other end is arranged in the plurality of second terminal slots; wherein the locking plastic shell has a socket on the side away from the protective plastic shell, and the socket is used for inserting a circuit board. By providing a socket on the side of the locking plastic shell away from the protective plastic shell, an external circuit board can be inserted into the socket to realize the electrical connection between the circuit board and the metal terminal. The plug-in method is convenient, simple, fast and stable to operate, avoiding the trouble and risk of soldering the traditional HDMI male connector to the circuit board, and can be repeatedly plugged and unplugged, reducing the connection requirements between the HDMI male connector and the circuit board. At the same time, by connecting the metal terminals to the PCB board and utilizing the wiring at the corresponding position of the PCB board (the wiring on the PCB board is pure copper, which has a much higher conductivity than the alloy material of the metal terminal), the cross-sectional area of ​​the connection between the metal terminal and the PCB board is increased, and the on-resistance of the connection part is reduced. At the same time, since the PCB board adopts a planar connection method, a gap is generated between the metal terminals, which increases the characteristic insulation impedance between the metal terminals, thereby further improving the high-frequency and high-speed performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a plug-in board type HDMI male connector of the present invention;

[0022] Figure 2 for Figure 1 The schematic diagram of the structure in which the circuit board is removed;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure in which the metal shell is removed;

[0024] Figure 4 for Figure 2 Exploded view of the structure;

[0025] Figure 5 for Figure 4 Schematic diagram of part of the structure;

[0026] Figure 6 for Figure 4 Schematic diagram of the structure of the locking rubber shell;

[0027] Figure 7 for Figure 4 Schematic diagram of part of the structure;

[0028] Figure 8 This is a schematic structural diagram of the terminal assembly in the plug-in type HDMI male connector of the present invention;

[0029] Figure 9 for Figure 8 Exploded view of the structure;

[0030] Figure 10 for Figure 8 Schematic diagram of the structure of the metal terminal;

[0031] Figure 11 for Figure 1 Cross-sectional view of a mid-board male HDMI connector.

[0032] Description of Figure Numbers:

[0033] Label name Label name 100 Metal shell 350 Positioning stage 110 Arc limiter 360 Arc groove 200 Protective plastic shell 400 Terminal assembly 210 First terminal slot 410 Fixed plastic shell 220 Body part 411 raised part 230 first extension 412 Bump 231 chute 420 Metal terminals 240 Limit slot 421 card slot 300 Locking plastic shell 430 First PCB board 310 Second terminal slot 440 Second PCB board 320 jack 500 Self-locking shrapnel 330 Mounting holes 510 Enclosed area 331 Snap-on boss 520 Second extension 332 Gap 521 Snap-on part 340 Main body 600 circuit board

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The present invention provides an embodiment of a plug-in board-type HDMI male connector, which is mainly used in televisions, computers, and other electronic products. The plug-in board-type HDMI male connector can widely support HDMI 1.3, HDMI 1.4, HDMI 2.0, HDMI 2.1, and future HDMI transmission protocols with higher speed requirements.

[0039] See also Figures 1 to 11 In one embodiment of the present invention, the plug-in type HDMI male connector includes:

[0040] Metal housing 100;

[0041] The protective plastic shell 200 is disposed in the metal shell 100 and has a plurality of first terminal slots 210;

[0042] A locking plastic shell 300 connected to the protective plastic shell 200, wherein the locking plastic shell 300 has a plurality of second terminal slots 310; and

[0043] The terminal assembly 400 includes a fixed plastic shell 410 and a plurality of metal terminals 420. The fixed plastic shell 410 is connected to the protective plastic shell 200 and is used to fix the plurality of metal terminals 420. One end of the plurality of metal terminals 420 is disposed in the plurality of first terminal grooves 210, and the other end is disposed in the plurality of second terminal grooves 310.

[0044] The locking plastic shell 300 has a socket 320 on a side away from the protective plastic shell 200 , and the socket 320 is used for inserting the circuit board 600 .

[0045] Specifically, the metal shell 100 is made of metal material, and the protective plastic shell 200 is arranged inside the metal shell 100. The metal shell 100 is mainly used to cover the protective plastic shell 200 and the multiple metal terminals 420, thereby providing a metal shielding effect, and also protecting other components inside the metal shell 100. The protective plastic shell 200 is set to a plastic insulating material, and a plurality of first terminal slots 210 for placing the metal terminals 420 are set inside the protective plastic shell 200. The multiple first terminal slots 210 are respectively located on the upper and lower sides of the protective plastic shell 200. The multiple first terminal slots 210 are separated from each other and are not connected, thereby preventing the multiple metal terminals 420 from being conductive during use. At the same time, the multiple first terminal slots 210 also play a certain limiting role on the multiple metal terminals 420, preventing the metal terminals 420 from being misaligned when plugging and unplugging for a long time.

[0046] The locking plastic shell 300 is also made of a plastic insulating material, thus providing insulation. The locking plastic shell 300 is connected to the protective plastic shell 200 by snapping, gluing, or other methods. In this embodiment, for ease of assembly, the locking plastic shell 300 and the protective plastic shell 200 are connected by snapping. The locking plastic shell 300 is provided with multiple second terminal slots 310 for placing the other ends of the metal terminals 420. The multiple second terminal slots 310 are located on the upper and lower sides of the locking plastic shell 300. The multiple second terminal slots 310 are separated from each other and are not connected, thereby preventing the multiple metal terminals 420 from conducting during use. At the same time, the multiple second terminal slots 310 also play a certain role in limiting the multiple metal terminals 420, thereby preventing the metal terminals 420 from being misaligned during long-term use. The first terminal slots 210 and the second terminal slots 310 are generally square-opening through slots.

[0047] See also Figure 4 、 Figure 8 and Figure 9Furthermore, compared to the traditional metal terminal 420 connected to the protective plastic shell 200 and the locking plastic shell 300 by means of rubber coating, the two ends of the metal terminal 420 in the plug-in type HDMI male connector of the present application are respectively arranged in the first terminal groove 210 of the protective plastic shell 200 and the second terminal groove 310 of the locking plastic shell 300. Therefore, the area of ​​direct contact between the metal terminal 420 and the plastic material is small, so the dielectric constant requirements of the plastic material are not strict, that is, the material requirements of the protective plastic shell 200 and the locking plastic shell 300 are not strict. The traditional metal terminal 420 is connected to the protective plastic shell 200 and the locking plastic shell 300 by means of rubber coating, which has higher requirements on the material of the protective plastic shell 200 and the locking plastic shell 300, and has more stringent requirements on the production process of the protective plastic shell 200 and the locking plastic shell 300. The plug-in type HDMI male connector of the present application adopts the above design, which makes the overall consistency of the connector higher and facilitates the large-scale production of the connector.

[0048] The terminal assembly 400 is arranged in the metal shell 100. The terminal assembly 400 includes a fixed plastic shell 410 and a plurality of metal terminals 420. The fixed plastic shell 410 is located between the protective plastic shell 200 and the locking plastic shell 300. The fixed plastic shell 410 wraps the plurality of metal terminals 420 and limits the positions of the plurality of metal terminals 420. Then, the two ends of the plurality of metal terminals 420 are respectively placed in the first terminal groove 210 and the second terminal groove 310. Taking into account the requirements of elasticity and rigidity, the material of the metal terminal 420 is set to alloy copper material, which can be brass, phosphor bronze, or other types of alloy copper, and there is no specific restriction on this. The number of the metal terminals 420 is set to multiple, and the number of the metal terminals 420 can be selected independently according to actual needs. Specifically in this embodiment, the number of the metal terminals 420 is set to 19, and the 19 metal terminals 420 are respectively located in the first terminal groove 210 and the second terminal groove 310 on the upper and lower sides of the HDMI male connector. The number of the first terminal slots 210 and the second terminal slots 310 is also set to be multiple, and it only needs to ensure that the number of the first terminal slots 210 and the second terminal slots 310 is not less than the number of the metal terminals 420, and there is no specific restriction on this.

[0049] See also Figures 1 to 6The locking plastic shell 300 has a socket 320 on the side away from the protective plastic shell 200. The socket 320 can be used to insert an external circuit board 600 to achieve electrical connection between the circuit board 600 and the metal terminal 420. Traditionally, the circuit board 600 and the HDMI male connector are electrically connected by welding, thereby transmitting multimedia signals through the circuit board 600 and receiving output current provided by the circuit board 600. However, due to the small pin spacing in the HDMI male connector, when welding the pins to the circuit board 600, high requirements are placed on the solder joints between the pins and the circuit board 600. For example, the solder joints must be as smooth as possible, and in particular, no tin tip burrs are allowed. This places high demands on welding, and the operation is time-consuming and labor-intensive, and the cost is high. The present invention provides a socket 320 for inserting an external circuit board 600 on a side of the locking plastic shell 300 away from the protective plastic shell 200. By inserting the circuit board 600 into the socket 320, an electrical connection between the HDMI male connector and the external circuit board 600 can be achieved. The operation is simple, fast, and stable, avoiding the trouble and risk of welding the traditional HDMI male connector to the circuit board 600, and the connector can be repeatedly plugged in and out for use. At the same time, the plug-in type HDMI male connector has higher consistency, a high yield rate in production and processing, a relatively simple testing process, and relatively low requirements for testing equipment, which can further reduce production costs. The height of the socket 320 is adapted to the thickness of the circuit board 600. By replacing different locking plastic shells 300, that is, replacing locking plastic shells 300 with different socket 320 heights, the requirements of circuit boards 600 of different thicknesses can be met.

[0050] The plug-in type HDMI male connector of the present invention comprises a metal housing 100, a protective plastic shell 200, a locking plastic shell 300, and a terminal assembly 400. The protective plastic shell 200 is disposed within the metal housing 100 and has a plurality of first terminal slots 210. The locking plastic shell 300 is connected to the protective plastic shell 200 and has a plurality of second terminal slots 310. The terminal assembly 400 comprises a fixed plastic shell 410 and a plurality of metal terminals 420. The fixed plastic shell 410 is connected to the protective plastic shell 200 and is used to fix the plurality of metal terminals 420. One end of the plurality of metal terminals 420 is disposed in the plurality of first terminal slots 210, and the other end is disposed in the plurality of second terminal slots 310. The locking plastic shell 300 has a socket 320 on a side away from the protective plastic shell 200 for inserting a circuit board 600. By providing a socket 320 on a side of the locking plastic shell 300 away from the protective plastic shell 200, an external circuit board 600 can be inserted into the socket 320 to achieve electrical connection between the circuit board 600 and the metal terminal 420. The plug-in method is convenient, simple, fast, and stable to operate, avoiding the trouble and risks of soldering the traditional HDMI male connector to the circuit board 600. It can also be repeatedly plugged and unplugged, reducing the connection requirements between the HDMI male connector and the circuit board 600.

[0051] See also Figures 4 to 7 、 Figure 11 In one embodiment, the protective plastic shell 200 has a main body 220 and two first extensions 230 extending outward from the same side of the main body 220. The locking plastic shell 300 is provided with mounting holes 330 for the two first extensions 230 to extend into. The protective plastic shell 200 is snap-connected with the locking plastic shell 300 through the two first extensions 230.

[0052] Specifically, the main body 220 of the protective plastic shell 200 is roughly designed as a rectangular parallelepiped, and the two first extensions 230 extend outward from one side of the long side of the main body 220 along the width direction of the main body 220, and the two first extensions 230 are respectively located at both ends of the length direction of the main body 220. The locking plastic shell 300 is provided with two mounting holes 330, and the positions of the two mounting holes 330 correspond to the positions of the two first extensions 230. The two first extensions 230 can be extended into the two mounting holes 330 to achieve a snap-on connection between the protective plastic shell 200 and the locking plastic shell 300. The snap-on connection method is simple and easy to operate. Of course, in other embodiments, the protective plastic shell 200 and the locking plastic shell 300 can also be connected in other connection methods, and there is no specific limitation on this. Furthermore, a snap-fitting boss 331 is formed in the mounting hole 330, and a hook is provided at one end of the first extension portion 230 away from the main body portion 220. When the first extension portion 230 extends into the mounting hole 330, the hook is snap-fitted with the snap-fitting boss 331, thereby achieving snap-fitting between the protective plastic shell 200 and the locking plastic shell 300.

[0053] See Continue Figures 4 to 7 、 Figure 11 In one embodiment, the plug-in type HDMI male connector further includes a self-locking spring 500, which is mounted on the outer peripheral surface of the locking plastic shell 300. The self-locking spring 500 includes an enclosing portion 510 and two second extension portions 520 extending outward from the same side of the enclosing portion 510. A clamping portion 521 is provided at the end of the second extension portion 520. The clamping portion 521 extends into the mounting hole 330 to be clamped with the circuit board 600 inserted into the socket 320.

[0054] Specifically, the self-locking spring 500 includes an enclosure portion 510 and two second extensions 520 extending outward from the same side of the enclosure portion 510. The enclosure portion 510 is in the form of an elongated sheet and surrounds the outer circumference of the locking plastic shell 300. The two second extensions 520 extend outward from one of the long sides of the enclosure portion 510 and are located at opposite ends of the enclosure portion 510 in the longitudinal direction. A snap-fitting portion 521 is provided at the distal end of the second extension 520, i.e., the end away from the enclosure portion 510. The snap-fitting portion 521 is a snap-fitting structure. The sidewall of the mounting hole 330 is provided with a clearance notch 332. The snap-fitting portion 521 extends into the mounting hole 330 and is located at the clearance notch 332. The clearance notch 332 is primarily used to provide clearance for the engaging portion 521. The hook structure of the engaging portion 521 is positioned toward the interior of the socket 320. Thus, when the external circuit board 600 is inserted into the socket 320, the engaging portion 521 can engage with the circuit board 600 inserted therein. It should be emphasized that the external circuit board 600 should be provided with a slot 421 structure that mates with the engaging portion 521, so that the engaging portion 521 can securely hold the circuit board 600 within the socket 320. The socket 320 of the locking plastic shell 300 has a fixed height. By replacing the locking plastic shell 300 that engages with the protective plastic shell 200, i.e., replacing a locking plastic shell 300 with a different socket 320 height, the locking plastic shell 300 can accommodate circuit boards 600 of varying thicknesses.

[0055] Furthermore, the end of the second extension 520 of the self-locking spring 500, away from the protective plastic shell 200, protrudes from the outer surface of the locking plastic shell 300 at the end where the socket 320 is located. Specifically, the end of the second extension 520 away from the protective plastic shell 200 is a clamping portion 521. With this arrangement, once the circuit board 600 is inserted into the socket 320 and engaged with the clamping portion 521, when it is necessary to remove the circuit board 600, the two clamping portions 521 can be moved away from each other to easily remove the circuit board 600. The clamping portions 521 protrude from the outer surface of the locking plastic shell 300 at the end where the socket 320 is located, making it easier to move the two clamping portions 521.

[0056] See 4 and Figure 5 In one embodiment, the locking plastic shell 300 includes a main body 340 and a positioning platform 350 connected to the main body 340. The positioning platform 350 is located on the side of the locking plastic shell 300 close to the protective plastic shell 200, and the enclosing portion 510 of the self-locking spring 500 is sleeved on the outer peripheral surface of the positioning platform 350.

[0057] Specifically, the main body 340 is roughly rectangular in shape. The positioning platform 350 is located on the side of the locking plastic shell 300 facing away from the socket 320 and extends away from the socket 320. The plurality of second terminal slots 310 penetrate the positioning platform 350 and the main body 340. Two mounting holes 330 are formed in the main body 340 and are located on opposite sides of the positioning platform 350. When installing the self-locking spring clip 500, the enclosing portion 510 of the self-locking spring clip 500 is sleeved onto the outer peripheral surface of the positioning platform 350 to secure the self-locking spring clip 500. At the same time, the two second extensions 520 extend into the two mounting holes 330, and the engaging portion 521 extends into the clearance notch 332 to secure the circuit board 600 inserted into the socket 320.

[0058] Please refer to 4 to Figure 7 It should be emphasized that when the locking plastic shell 300 and the protective plastic shell 200 are snap-connected, the two first extensions 230 of the protective plastic shell 200 also extend into the mounting hole 330 and snap-fit ​​with the snap-fit ​​protrusions 331 in the mounting hole 330. Therefore, the mounting hole 330 accommodates both the first extension 230 and the second extension 520. The ends of the first extension 230 and the second extension 520 away from the protective plastic shell 200 are both configured as hook structures. The hook structure of the first extension 230 is used to snap-fit ​​with the locking plastic shell 300, while the hook structure of the second extension 520 is used to secure the circuit board 600 inserted into the socket 320. To prevent interference between the hook structures of the first extension 230 and the second extension 520, the orientation of the hook structure of the first extension 230 is opposite to that of the hook structure of the second extension 520.

[0059] Please refer to 4. Figure 8 and Figure 9 In one embodiment, the terminal assembly 400 further includes a first PCB board 430, the plurality of metal terminals 420 are respectively located on opposite sides of the first PCB board 430 and welded to the first PCB board 430, and the fixed plastic shell 410 is sleeved on the first PCB board 430 and the plurality of metal terminals 420. Specifically, the terminal assembly 400 further includes the first PCB board 430, and solder paste can be pre-applied at the contact positions between the first PCB board 430 and the plurality of metal terminals 420. The solder paste is melted by heating the plurality of metal terminals 420, thereby completing the welding of the plurality of metal terminals 420 to the first PCB board 430. The plurality of metal terminals 420 are welded to the surfaces of the opposite sides of the first PCB board 430 by welding, and the fixed plastic shell 410 is sleeved on the first PCB board 430 to further secure the plurality of metal terminals 420.

[0060] Furthermore, the terminal assembly 400 also includes two second PCB boards 440, the two second PCB boards 440 are arranged on opposite sides of the first PCB board 430, the multiple metal terminals 420 are located between the first PCB board 430 and the second PCB board 440, the fixed plastic shell 410 is sleeved on the two second PCB boards 440, and the fixed plastic shell 410 welds the metal terminals 420 to the first PCB board 430 through the two second PCB boards 440.

[0061] Specifically, the two second PCB boards 440 are disposed on opposite sides of the first PCB board 430. To further ensure the secure connection of the multiple metal terminals 420, the multiple metal terminals 420 can also be soldered to the second PCB board 440. Similarly, solder paste can be pre-applied to the contact areas between the second PCB board 440 and the multiple metal terminals 420. The solder paste is then heated to melt the multiple metal terminals 420, completing the soldering of the multiple metal terminals 420 to the second PCB board 440. After the multiple metal terminals 420 are soldered to the first PCB board 430 and the second PCB board 440, the fixing plastic housing 410 is sleeved over the outer circumferences of the two second PCB boards 440. The fixing plastic housing 410 presses the multiple metal terminals 420 against the surface of the first PCB board 430 via the two second PCB boards 440, thereby re-fixing the multiple metal terminals 420.

[0062] See also Figures 8 to 10 It is worth mentioning that the middle portion of the metal terminal 420 is bent to form a slot 421, which is engaged with the first PCB board 430. Specifically, the middle portion of the metal terminal 420 is further bent to form a slot 421, which is engaged with the first PCB board 430, thereby limiting the displacement of the metal terminal 420 in the direction in which the metal terminal 420 extends, and also increasing the resistance to push or pull between the metal terminal 420 and the first PCB board 430.

[0063] In one embodiment, a plurality of solder pads (not shown) are provided on the first PCB board 430 and / or the second PCB board 440 , and the plurality of metal terminals 420 abut against the first PCB board 430 and the second PCB board 440 and correspond one-to-one to the plurality of solder pads.

[0064] Specifically, multiple soldering pads are arranged at intervals along the direction in which the multiple metal terminals 420 are arranged, and the positions of the soldering pads correspond one-to-one with the positions of the metal terminals 420 to be soldered. The multiple soldering pads can be provided individually on the first PCB board 430, individually on the second PCB board 440, or simultaneously on the first PCB board 430 and the second PCB board 440, without specific limitations. The soldering pads can be made of pure copper, which has much better high-frequency and electrical conductivity than alloy copper. Therefore, high-frequency signals can be better transmitted through the soldering pads. The multiple metal terminals 420 abut against the first PCB board 430 and the second PCB board 440 and can also be soldered to the first PCB board 430 and the second PCB board 440 using solder paste. In addition, the signals from the multiple metal terminals 420 are transmitted to the multiple soldering pads. By adjusting the distance between the multiple soldering pads, that is, adjusting the distance between the multiple metal terminals 420 during production, the radiation interference of high-frequency signals on other signals and the radiation interference of other signals on high-frequency signals can be improved. Furthermore, a hole may be drilled between two adjacent pads so that air can flow into the hole, thereby adjusting the dielectric constant as required.

[0065] Please refer to 7 to Figure 9 In one embodiment, a sliding groove 231 is provided on the inner side of the first extension portion 230, and a protrusion 411 that slides with the sliding groove 231 is provided on the fixed plastic shell 410. Specifically, when installing the fixed plastic shell 410, a protrusion 411 can be provided on the fixed plastic shell 410, and a sliding groove 231 can be provided on the inner side of the first extension portion 230. By sliding the protrusion 411 into the sliding groove 231, the fixed plastic shell 410 and the protective plastic shell 200 are assembled. Subsequently, the protective plastic shell 200 and the locking plastic shell 300 are snap-fitted. At this time, the fixed plastic shell 410 is located between the protective plastic shell 200 and the locking plastic shell 300. The snap-fitting of the protective plastic shell 200 and the locking plastic shell 300 achieves the limit fixation of the position of the fixed plastic shell 410.

[0066] Please continue to see 7 to Figure 9In one embodiment, the fixed plastic shell 410 is provided with a protrusion 412, and the protective plastic shell 200 is provided with a limiting groove 240 that cooperates with the protrusion 412. Specifically, when the protrusion 411 of the fixed plastic shell 410 slides into the slide groove 231 along the extension direction of the slide groove 231, in order to prevent the position of the fixed plastic shell 410 in the slide groove 231 from shifting, a protrusion 412 can be further provided on the fixed plastic shell 410, and the protrusion 412 cooperates with the limiting groove 240 of the protective plastic shell 200 to fix the position of the fixed plastic shell 410 slidably installed in the slide groove 231 again. In order to ensure the limiting effect of the limiting groove 240 of the protective plastic shell 200 on the fixed plastic shell 410, the number of the protrusion 412 and the limiting groove 240 can be set to multiple, which are respectively provided on the upper and lower sides of the fixed plastic shell 410 and the protective plastic shell 200.

[0067] See also Figures 1 to 6 In one embodiment, the locking plastic shell 300 is provided with an arc-shaped groove 360, and the metal shell 100 is provided with an arc-shaped limiting piece 110 that cooperates with the arc-shaped groove 360. Specifically, the metal shell 100 is provided with an arc-shaped limiting piece 110 at one end close to the locking plastic shell 300, and the locking plastic shell 300 is provided with an arc-shaped limiting piece 110 that adapts to the arc-shaped limiting piece 110. After the metal shell 100 is sleeved on the outer circumference of the protective plastic shell 200 and the fixed plastic shell 410, the arc-shaped limiting piece 110 deforms to cooperate with the arc-shaped groove 360, thereby achieving a snap-fit ​​fixation between the metal shell 100 and the locking plastic shell 300. The number of the arc-shaped grooves 360 can be set to multiple, and the number of the arc-shaped limit plates 110 corresponds to the number of the arc-shaped grooves 360. Multiple arc-shaped limit plates 110 can be set on the same side of the metal shell 100, or on opposite sides of the metal shell 100. There is no specific restriction on this.

[0068] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A plug-in type HDMI male connector, characterized in that: The plug-in type HDMI male connector includes: Metal housing (100); A protective plastic shell (200) is disposed in the metal shell (100), and the protective plastic shell (200) has a plurality of first terminal slots (210); A locking plastic shell (300) is connected to the protective plastic shell (200), and the locking plastic shell (300) has a plurality of second terminal slots (310); and A terminal assembly (400) comprising a fixed plastic shell (410) and a plurality of metal terminals (420), wherein the fixed plastic shell (410) is connected to the protective plastic shell (200), and the fixed plastic shell (410) is used to fix the plurality of metal terminals (420), and one end of the plurality of metal terminals (420) is arranged in the plurality of first terminal slots (210), and the other end is arranged in the plurality of second terminal slots (310); The locking plastic shell (300) has a socket (320) on a side away from the protective plastic shell (200), and the socket (320) is used for inserting the circuit board (600); The protective plastic shell (200) comprises a main body (220) and two first extensions (230) extending outward from the same side of the main body (220); the locking plastic shell (300) is provided with mounting holes (330) for the two first extensions (230) to extend into; the protective plastic shell (200) is engaged with the locking plastic shell (300) via the two first extensions (230); The plug-in type HDMI male connector further comprises a self-locking shrapnel (500), wherein the self-locking shrapnel (500) is mounted on the outer peripheral surface of the locking plastic shell (300), and the self-locking shrapnel (500) comprises an enclosing portion (510) and two second extension portions (520) extending outward from the same side of the enclosing portion (510), and a clamping portion (521) is provided at the end of the second extension portion (520), and the clamping portion (521) extends into the mounting hole (330) to be locked with the circuit board (600) inserted into the socket (320); The locking plastic shell (300) comprises a main body (340) and a positioning platform (350) connected to the main body (340), wherein the positioning platform (350) is located on a side of the locking plastic shell (300) close to the protective plastic shell (200), and the enclosing portion (510) of the self-locking spring (500) is sleeved on the outer peripheral surface of the positioning platform (350); The terminal assembly (400) further comprises a first PCB board (430), the plurality of metal terminals (420) are respectively located on opposite sides of the first PCB board (430) and welded to the first PCB board (430), and the fixed plastic shell (410) is sleeved on the first PCB board (430) and the plurality of metal terminals (420); The terminal assembly (400) further comprises two second PCB boards (440), the two second PCB boards (440) being arranged on opposite sides of the first PCB board (430), the plurality of metal terminals (420) being located between the first PCB board (430) and the second PCB board (440), the fixed plastic shell (410) being sleeved on the two second PCB boards (440), and the fixed plastic shell (410) soldering the metal terminals (420) to the first PCB board (430) via the two second PCB boards (440); The middle portion of the metal terminal (420) is bent to form a card slot (421), and the card slot (421) is card-connected to the first PCB board (430).

2. The plug-in type HDMI male connector according to claim 1, wherein: A plurality of solder pads are provided on the first PCB board (430) and / or the second PCB board (440), and the plurality of metal terminals (420) abut against the first PCB board (430) and the second PCB board (440) and correspond one-to-one to the plurality of solder pads.

3. The plug-in type HDMI male connector according to claim 1, wherein: A sliding groove (231) is provided on the inner side of the first extension portion (230), and a protrusion (411) that slidably cooperates with the sliding groove (231) is provided on the fixed plastic shell (410).

4. The plug-in type HDMI male connector according to any one of claims 1 to 3, wherein: The fixed plastic shell (410) is provided with a protrusion (412), and the protective plastic shell (200) is provided with a limiting groove (240) that cooperates with the protrusion (412) in a limiting manner.

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