Electric connector

Abstract

An electric connector is used for being installed on a circuit board and comprises an upper cover, an insulation body located below the upper cover and a plurality of conductive terminals contained in the insulation body, and each conductive terminal is provided with a contact part which extends out of the insulation body and abuts against the circuit board downwards and elastically. The upper cover comprises a metal piece and a plastic cover body formed on the metal piece in an injection molding mode, the first through groove penetrates through the metal piece in the vertical direction, the second through groove penetrates through the plastic cover body in the vertical direction and corresponds to the first through groove and the second through groove in the vertical direction, and the plastic inner mold part is formed in the first through groove and the second through groove in an injection molding mode. While the overall strength of the upper cover is increased, a part of the plastic inner mold can be downwards injection-molded in the first through groove and the second through groove, which is more beneficial for the plastic inner mold to completely fill a gap between the upper cover and the insulating body.

Description

Technical Field

[0001] The present invention relates to an electrical connector, and more particularly to an electrical connector that can ensure reliable abutment between a terminal and a circuit board while increasing a glue injection channel.

Background Art

[0002] There is a common cable connector for installation on a circuit board, which includes an insulating base and a plurality of conductive terminals fixed to the insulating base. Each conductive terminal has an abutting portion and a wiring portion. The abutting portion extends downward from the insulating base and elastically abuts against the circuit board. The upper surface of the wiring portion is exposed from the insulating base and is welded to one end of the cable. A plastic cover body covers the insulating base and is fixed to the circuit board. An opening for the cable to pass through is provided at the rear end surface of the plastic cover body. A plastic inner mold is injection-molded forward from the opening between the plastic cover body and the insulating base, and the plastic inner mold partially covers the wiring portion and the cable connected to the wiring portion, thereby fixing the cable and preventing the cable from being displaced to cause the disconnection between the wiring portion and the cable.

[0003] In the above structure, the following problems exist: When the cable connector is installed on the circuit board, the abutting portion of the conductive terminal elastically abuts against the circuit board downward, and the circuit board will give an upward acting force to the abutting portion, thereby pushing the insulating base upward. At this time, since only a plastic cover body is provided above the insulating base and the strength of the plastic cover body is insufficient, it is impossible to give an adequate downward reaction force to the insulating base, so that the reliable abutment between the abutting portion of the conductive terminal and the circuit board cannot be ensured. At the same time, since the plastic inner mold can only be injection-molded in the front-back direction, not only is the injection speed slow, but also since the cable passes through the opening at the rear side of the plastic cover body, the gap for the plastic to pass through between the plastic cover body and the insulating base in the front-back direction is very narrow, and the complete molding of the plastic inner mold cannot be ensured.

[0004] Therefore, it is necessary to design a new electrical connector to solve the above technical problems.

Summary of the Invention

[0005] Aiming at the problems faced by the background art, the purpose of the present invention is to provide an electrical connector in which a metal part includes a first through groove penetrating the main body portion in the up-down direction; a plastic cover body injection-molded on the metal part has a second through groove, and in the up-down direction, the second through groove penetrates the plastic cover body and is correspondingly arranged with the first through groove, and the strength of the upper cover is enhanced.

[0006] To achieve the above object, the present invention adopts the following technical means: An electrical connector for mounting to a circuit board, characterized in that it includes: an insulating body; a plurality of conductive terminals fixed to the insulating body, the conductive terminals having a contact portion that protrudes from the insulating body and elastically abuts against the circuit board downward; an upper cover covering above the insulating body and fixed to the circuit board, the upper cover including a metal part and a plastic cover body injection-molded on the metal part; the metal part has a main body portion and a first through groove that penetrates the main body portion in the up and down direction; the plastic cover body includes a second through groove that penetrates the plastic cover body in the up and down direction and is correspondingly arranged in the up and down direction with the first through groove; a plastic inner mold is at least partially injection-molded in the first through groove and the second through groove.

[0007] Further, the conductive terminals include a plurality of signal terminals, each signal terminal having a wiring portion, the upper surface of the wiring portion is exposed from the insulating body and is electrically connected to one end of a cable, the plastic inner mold is coated on the wiring portion and the cable electrically connected to the wiring portion to fix the cable, and the other end of the cable extends backward out of the plastic inner mold.

[0008] Further, a first bent portion is formed by bending and extending downward from the inner wall of the first through groove.

[0009] Further, the plurality of conductive terminals are arranged side by side in the left and right directions, the left and right sides of the upper cover are fixed to the circuit board, the first through groove extends in the left and right directions, and the first bent portion is located at the front side and / or the rear side of the first through groove and extends in the left and right directions.

[0010] Further, the first bent portion is located at the front side and / or the rear side of the first through groove and extends in the left and right directions. The main body portion further includes two connecting portions and two terminating portions. The two connecting portions are respectively located at the front side and the rear side of the first through groove, and the two terminating portions are respectively located at the left side and the right side of the first through groove; a first extending portion is formed by bending and extending downward from each terminating portion away from the first through groove in the left and right directions, and the first extending portion is used for fixing to the circuit board; a second bent portion is formed by bending and extending downward from each connecting portion away from the first through groove in the front and rear directions, and a second extending portion is formed by extending from the second bent portion, and the second extending portion is used for fixing to the circuit board.

[0011] Further, in the left and right directions, the projection of the first extending portion and the projection of the first bent portion at least partially overlap; and the first extending portion has a front end face and a rear end face that are opposite to each other. In the front and rear directions, the front end face is located between the front and rear adjacent first bent portions and second bent portions, and the rear end face is located between the front and rear adjacent first bent portions and second bent portions.

[0012] Further, the first extension portion includes a first fixing portion that horizontally bends and extends away from the first through slot in the left-right direction from the terminal portion, and a fixing hole penetrates the first fixing portion in the up-down direction; the second extension portion includes a second fixing portion that horizontally extends in the front-back direction toward the first fixing portion. In the up-down direction, at least part of the projection of the first fixing portion and the projection of the second fixing portion overlap. A locking element passes through the fixing hole in the up-down direction to fix the first extension portion to the circuit board.

[0013] Further, in the up-down direction, at least part of the projection of the second fixing portion and the projection of the locking element overlap; in the front-back direction, there is a plastic groove between the two second fixing portions. In the up-down direction, the fixing hole communicates with the plastic groove, and part of the first fixing portion is exposed in the plastic groove, and the plastic cover body is at least partially injection-molded in the plastic groove.

[0014] Further, the conductive terminal includes a plurality of signal terminals, and each signal terminal has a wiring portion; a receiving space is recessed downward from the upper surface of the insulating body. In the up-down direction, the receiving space communicates with the first through slot and the second through slot. The upper surface of the wiring portion is exposed in the receiving space and is connected to the cable; a grounding member has a flat plate portion extending in the left-right direction. The flat plate portion covers and is fixed to the shielding layer of the cable, and the flat plate portion is exposed in the first through slot and the second through slot, and the plastic inner mold is at least partially injection-molded on the flat plate portion and the receiving space.

[0015] Further, the conductive terminal further includes a plurality of grounding terminals, and each grounding terminal has a grounding portion; the grounding member further includes a plurality of grounding fingers extending forward from the flat plate portion, and abutting portions are bent upward from the grounding fingers. A bridging portion extends in the left-right direction and connects the plurality of abutting portions. The upper surface of the grounding portion is exposed in the receiving space and is connected to the grounding fingers. The plurality of abutting portions and the bridging portion are both exposed in the receiving space, and the plurality of abutting portions and the bridging portion both extend forward beyond the cable and abut forward against the front wall surface of the receiving space. In the up-down direction, the receiving space and the first through slot communicate with each other, and the plastic inner mold at least partially covers the wiring portion and the grounding portion and is injection-molded on the bridging portion.

[0016] Further, the grounding member further includes a plurality of through holes penetrating the flat plate portion in the up-down direction, and the through holes are located between two adjacent cables on the left and right; a plurality of first snap grooves are recessed downward from the upper surface of the insulating body, and the first snap grooves communicate with the through holes in the up-down direction; the plastic inner mold is at least partially injection-molded on the through holes and the first snap grooves, and the plastic inner mold and the insulating body are mutually limited in the up-down direction.

[0017] Further, a protruding portion protrudes from the inner wall of the second through slot, and the plastic inner mold and the protruding portion are mutually limited in the up-down direction.

[0018] Further, at least one protruding portion protrudes from the front wall surface of the second through slot, and the front wall surface of the second through slot extends backward beyond the front wall surface of the receiving space.

[0019] Further, a plurality of first receiving grooves are recessed backward from the front side wall of the plastic cover body, and the front surface and the bottom surface of the metal part are both exposed in the first receiving grooves; a plurality of second receiving grooves are recessed backward from the front end surface of the insulating body, and the first receiving grooves and the second receiving grooves communicate with each other in the up and down directions; the plastic inner mold is partially injection-molded in the first receiving grooves and the second receiving grooves, so that the plastic inner mold restricts the upward displacement of the upper cover and restricts the downward displacement of the insulating body.

[0020] Further, the plastic inner mold includes a first plastic block and a second plastic block. The first plastic block is injection-molded from the first receiving groove or the second receiving groove, and the second plastic block is injection-molded from the first through groove or the second through groove. The first plastic block is fixed in the first receiving groove and the second receiving groove, and the second plastic block is at least partially fixed in the first through groove and the second through groove.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In this application, the upper cover is arranged to cover the insulating body and is fixed to the circuit board. The upper cover includes a metal part and a plastic cover body injection-molded on the metal part, thereby increasing the overall strength of the upper cover. When the conductive terminal elastically abuts against the circuit board downward and the circuit board gives an upward reaction force to the conductive terminal, the metal part gives a downward force to the insulating body, so as to ensure that the conductive terminal fixed to the insulating body and the circuit board are firmly abutted; by providing that the plastic cover body has a second through groove, the second through groove penetrates the plastic cover body in the up and down directions and is correspondingly arranged with the first through groove in the up and down directions, so that part of the plastic inner mold can be injection-molded downward in the first through groove and the second through groove, which is more conducive to the plastic inner mold to completely fill the gap between the upper cover and the insulating body.

Description of the Drawings

[0023] Figure 1 is a three-dimensional exploded view of the electrical connector of the present invention;

[0024] Figure 2 is a top view of the electrical connector of the present invention;

[0025] Figure 3 is Figure 2 a cross-sectional view of the electrical connector in [FIGURE NUMBER] along A-A;

[0026] Figure 4 is Figure 2 a cross-sectional view of the electrical connector in [FIGURE NUMBER] along B-B;

[0027] Figure 5 is Figure 2 a cross-sectional view of the electrical connector in [FIGURE NUMBER] along C-C;

[0028] Figure 6 is Figure 2Cross-sectional view of the medium electrical connector along D-D;

[0029] Figure 7 is Figure 2 Cross-sectional view of the medium electrical connector along E-E;

[0030] Figure 8 is Figure 2 Partial top view of the medium electrical connector after removing the plastic inner mold;

[0031] Figure 9 is Figure 8 Cross-sectional view of the medium electrical connector along F-F;

[0032] Figure 10 is Figure 2 Stereogram of the medium electrical connector after removing the plastic inner mold;

[0033] Figure 11 Stereo schematic diagram of the insulation body, cable and grounding part of the electrical connector of the present invention after disassembly;

[0034] Figure 12 Stereo schematic diagram of the plastic cover and metal part of the electrical connector of the present invention after disassembly;

[0035] Figure 13 is Figure 12 Bottom view of the metal part;

[0036] Figure 14 is Figure 13 Cross-sectional view of the metal part along G-G.

[0037] Explanation of the reference numerals in the drawings of the specific implementation mode:

[0038]

[0039]

Specific implementation mode

[0040] For better understanding of the purpose, structure and features of the present invention, the present invention will be further described below in conjunction with the drawings and specific implementation modes.

[0041] For better understanding of the technical solution of the present invention, the X-axis in the three-dimensional coordinate axes in the drawings of the specification is defined as the left-right direction, the positive direction of the X-axis is to the right, the Y-axis is defined as the front-back direction, the positive direction of the Y-axis is to the front, the Z-axis is defined as the up-down direction, and the positive direction of the Z-axis is up.

[0042] As Figure 1 and Figure 2As shown, an electrical connector is used to be mounted on a circuit board P. The electrical connector includes an upper cover 1, an insulating body 2, and a plurality of conductive terminals 3 received in the insulating body 2. The upper cover 1 covers the insulating body 2 from above and is fixed to the circuit board P. A plastic inner mold 6 is injection-molded and includes a first plastic block 61 and a second plastic block 62.

[0043] As Figures 12 to 14 shown, the upper cover 1 includes a metal part 11 and a plastic cover body 12 injection-molded on the metal part 11. The metal part 11 includes a main body portion 111 and a first through groove 112 penetrating the main body portion 111 in the up and down direction. The first through groove 112 extends in the left and right direction, and a first bending portion 113 is formed by extending downward from the front inner wall and the rear inner wall of the first through groove 112 respectively. The first bending portion 113 also extends in the left and right direction. In other embodiments, the number of the first bending portions 113 may also be one, and the first bending portion 113 may also be formed by bending and extending downward from the left inner wall and the right inner wall of the first through groove 112. The metal part 11 further includes two terminal portions 114 and two connecting portions 116. The two terminal portions 114 are respectively located on the left side and the right side of the first through groove 112, and the two connecting portions 116 are respectively located on the front side and the rear side of the first through groove 112. The terminal portion 114 connects the two connecting portions 116 in the front and rear direction.

[0044] As Figure 12 shown, a first extension portion 115 is formed by extending downward from each terminal portion 114 at a position away from the first through groove 112 in the left and right direction. The first extension portion 115 has opposite front end faces and rear end faces. The first extension portion 115 further includes a first connecting section 115c and a first fixing portion 115a. The first connecting section 115c is bent and extended downward from the terminal portion 114 at a position away from the first through groove 112 in the left and right direction. The first fixing portion 115a is horizontally bent and extended from the lower end of the first connecting section 115c in a direction away from the first through groove 112 in the left and right direction. In the left and right direction, the projection of the first extension portion 115 and the projection of the first bending portion 113 partially overlap. A fixing hole 115b penetrates the first fixing portion 115a in the up and down direction. The upper surface of the first fixing portion 115a is exposed outside the plastic cover body 12.

[0045] As Figure 13As shown, a second bent portion 117 is formed by extending downward from each connecting portion 116 in the front-rear direction away from the first through groove 112, so that both the first bent portion 113 and the second bent portion 117 are bent downward from the connecting portion 116, whereby the first bent portion 113, the connecting portion 116, and the second bent portion 117 located on the front side of the first through groove 112 form an inverted U shape. Similarly, the first bent portion 113, the connecting portion 116, and the second bent portion 117 located on the rear side of the first through groove 112 also form an inverted U shape. In the front-rear direction, the front end face of the first extension portion 115 is located between the front and rear adjacent first bent portions 113 and second bent portions 117, and the rear end face of the first extension portion 115 is also located between the front and rear adjacent first bent portions 113 and second bent portions 117. A second extension portion 118 is formed by extending from each second bent portion 117, and the second extension portion 118 includes a second fixing portion 118a. The second fixing portion 118a is horizontally bent and extended from the lower end of the second bent portion 117 in the direction approaching the first fixing portion 115a in the front-rear direction. At the same time, in the front-rear direction, the two second fixing portions 118a are separated, and there is a plastic groove 119 between the two second fixing portions 118a. In the up-down direction, the fixing hole 115b communicates with the plastic groove 119, and a part of the first fixing portion 115a is exposed in the plastic groove 119, and the plastic cover body 12 is partially injection-molded in the plastic groove 119. As Figure 6 As shown, in the up-down direction, the projection of the second fixing portion 118a and the projection of the first fixing portion 115a partially overlap. In this embodiment, the second fixing portion 118a is located below the first fixing portion 115a and is spot-welded to the first fixing portion 115a. In other embodiments, the second fixing portion 118a may also be located above the first fixing portion 115a, and the second fixing portion 118a and the first fixing portion 115a may also be fixedly connected by laser welding or other means.

[0046] As Figures 9 to 12 As shown, the plastic cover body 12 includes a second through groove 121 and a plurality of second receiving grooves 122. The second through groove 121 penetrates the plastic cover body 12 in the up-down direction, and in the up-down direction, the second through groove 121 and the first through groove 112 are correspondingly arranged. A protruding portion 123 is respectively protruded from the front wall surface and the rear wall surface of the second through groove 121. The second receiving groove 122 is recessed backward from the front end surface of the plastic cover body 12, and the front surface and the bottom surface of the metal part 11 are both exposed in the second through groove 121.

[0047] As Figure 1 、 Figure 5 and Figure 11As shown, the insulating body 2 is located below the upper cover 1, and the insulating body 2 includes a receiving space 20, a plurality of first receiving grooves 21, and a plurality of first snap grooves 22. The receiving space 20 is recessed downward from the upper surface of the insulating body 2. Along the up and down direction, the receiving space 20, the first through groove 112, and the second through groove 121 communicate with each other. And the front wall surface of the second through groove 121 extends backward beyond the front wall surface of the receiving space 20. The first receiving grooves 21 are recessed backward from the front end surface of the insulating body 2, and the plurality of first receiving grooves 21 communicate with the plurality of second receiving grooves 122 along the up and down direction respectively. The first snap grooves 22 are recessed downward from the upper surface of the insulating body 2.

[0048] As Figure 3 , Figure 4 and Figure 11 shown, the conductive terminals 3 are arranged in the left and right direction, and each conductive terminal 3 has a contact portion 311, 321 extending out of the insulating body 2 and elastically abutting against the circuit board P downward. The conductive terminals 3 further include a plurality of signal terminals 31 and a plurality of ground terminals 32. Along the left and right direction, there is a pair of signal terminals 31 between two adjacent ground terminals 32. In other embodiments, the signal terminals 31 and the ground terminals 32 may also have other arrangements. Each signal terminal 31 has a wiring portion 312, and the upper surface of the wiring portion 312 is exposed in the receiving space 20. Each ground terminal 32 has a grounding portion 322, and the upper surface of the grounding portion 322 is also exposed in the receiving space 20. Each cable 4 has a pair of wire cores 41 and a shielding layer 42 covering the outer periphery of the wire cores 41. The two wire cores 41 of a cable 4 are respectively connected to the two wiring portions 312 of a pair of signal terminals 31.

[0049] As Figure 1 and Figure 11 shown, a grounding member 5 covers above the plurality of cables 4. The grounding member 5 has a flat plate portion 51, a plurality of grounding fingers 52 extending forward from the flat plate portion 51, a plurality of abutting portions 53, and a bridging portion 54. The plurality of abutting portions 53 are respectively bent and extended upward from the plurality of grounding fingers 52, and a bridging portion 54 extends in the left and right direction and connects the plurality of abutting portions 53. The flat plate portion 51 extends in the left and right direction and is fixedly connected to the shielding layers 42 of the plurality of cables 4, and the flat plate portion 51 is exposed in the first through groove 112 and the second through groove 121. A plurality of through holes 511 penetrate through the flat plate portion 51 in the up and down direction, and each through hole 511 is located between two adjacent cables 4 in the left and right direction. And along the up and down direction, the through holes 511 and the first snap grooves 22 communicate with each other. As Figure 3 and Figure 4As shown, a plurality of grounding fingers 52 and a plurality of wire cores 41 are arranged side by side in the left-right direction, and the grounding fingers 52 are fixedly welded to the grounding portion 322. A plurality of abutting portions 53 and bridging portions 54 project forward beyond the wire cores 41, so that when the cable 4 and the grounding member 5 fixed to the cable 4 are installed into the electrical connector, the abutting portions 53 and the bridging portions 54 can abut and be positioned against the front wall surface of the receiving space 20 in advance, facilitating the subsequent alignment and fixation of the grounding fingers 52 and the wire cores 41 with the wiring portion 312 and the grounding portion 322 respectively.

[0050] As Figure 1 and Figure 7 As shown, the first plastic block 61 is injection-molded from the first receiving groove 21 or the second receiving groove 122, so that the first plastic block 61 is fixed to the first receiving groove 21 and the second receiving groove 122, thereby restricting the upward displacement of the upper cover 1 by the plastic inner mold 6 and restricting the downward displacement of the insulating body 2 by the plastic inner mold 6. The second plastic block 62 is injection-molded from the first through groove 112 or the second through groove 121. The second plastic block 62 is partially fixed to the first through groove 112 and the second through groove 121, and the second plastic block 62 and the protruding portion 123 are limited to each other in the up-down direction. The second plastic block 62 continues to be injection-molded downward from the first through groove 112 and the second through groove 121. The second plastic block 62 is partially injection-molded in the receiving space 20, so that the second plastic block 62 partially covers the wiring portion 312 and the cable 4 connected to the wiring portion 312 to fix the cable 4, and the other end of the cable 4 extends backward out of the plastic inner mold 6. At the same time, the second plastic block 62 also covers the grounding portion 322 and the grounding fingers 52 connected to the grounding portion 322, and the second plastic block 62 is partially overmolded on the bridging portion 54. The second plastic block 62 is partially injection-molded on the flat portion 51, and the second plastic block 62 is partially injection-molded in the through hole 511 and the first snap groove 22 located below the through hole 511, so that the plastic inner mold 6 and the insulating body 2 are limited to each other in the up-down direction.

[0051] As Figure 5 and Figure 6 As shown, when the electrical connector is installed on the circuit board P, a locking element S passes through the fixing hole 115b from top to bottom, thereby fixing the first fixing portion 115a and the second fixing portion 118a to the circuit board P. At the same time, in the up-down direction, the projection of the second fixing portion 118a and the projection of the locking element S partially overlap.

[0052] In summary, the electrical connector of the present invention has the following beneficial effects:

[0053] 1. By arranging the upper cover 1 to cover the insulating body 2 from above and fixing it to the circuit board P, the upper cover 1 includes a metal part 11 and a plastic cover body 12 injection-molded on the metal part 11, which increases the overall strength of the upper cover 1. When the conductive terminal 3 elastically abuts against the circuit board P downward and the circuit board P gives an upward reaction force to the conductive terminal 3, the metal part 11 gives a downward force to the insulating body 2, thereby ensuring that the conductive terminal 3 fixed to the insulating body 2 and the circuit board P are firmly abutted; at the same time, by arranging the first bending part 113 formed by bending and extending downward from the inner wall of the first through groove 112, the anti-bending ability of the metal part 11 is enhanced, and it is avoided that the metal part 11 is easily arched and deformed after receiving the reaction force of the circuit board P; by arranging the plastic cover body 12 to have a second through groove 121, the second through groove 121 penetrates the plastic cover body 12 in the up-down direction and is arranged corresponding to the first through groove 112 in the up-down direction, so that part of the plastic inner mold 6 can be injection-molded downward in the first through groove 112 and the second through groove 121, which is more conducive to the plastic inner mold 6 to completely fill the gap between the upper cover 1 and the insulating body 2.

[0054] 2. By arranging the first through groove 112 to extend in the left-right direction, and the first bending part 113 is located on the front side and the rear side of the first through groove 112 and extends in the left-right direction, so that the extending direction of the first bending part 113 is the same as the arrangement direction of the conductive terminals 3, both in the left-right direction. Thus, when the conductive terminals 3 are displaced upward by the circuit board P and drive the insulating body 2 to push the upper cover 1 upward, the reaction force range of the metal part 11 can cover a plurality of conductive terminals 3 in the left-right direction, which is conducive to the reliable abutment of the contact parts 311, 321 and the circuit board P; and since the left and right sides of the upper cover 1 are fixed to the circuit board P, when the middle part is subjected to the upward acting force of the conductive terminals 3, by arranging the first bending part 113 to be located on the front side and the rear side of the first through groove 112 and extend in the left-right direction, the strength of the middle part of the metal part 11 is enhanced, and it is avoided that the middle part of the metal part 11 is easily arched.

[0055] 3. By arranging the first extension part 115 to be fixed to the circuit board P, and the second extension part 118 is formed by extending from the second bending part 117, and the second extension part 118 is also fixed to the circuit board P; so that the two terminal parts 114 and the two first bending parts 113 are fixed to the circuit board P through the first extension part 115, and the two connecting parts 116 and the two second bending parts 117 are fixed to the circuit board P through the second extension part 118. At the same time, when the circuit board P abuts against the contact parts 311, 321 upward, since both the first bending part 113 and the second bending part 117 extend downward from the connecting part 116, the force-receiving area and the force-applying area of the metal part 11 are the entire part from the first bending part 113 to the second bending part 117, rather than only concentrated on the first bending part 113 or the second bending part 117, making the metal part 11 less likely to bend and being more conducive to the reliable abutment of the conductive terminal 3 and the circuit board P.

[0056] 4. By setting that in the left - right direction, the projection of the first extension portion 115 and the projection of the first bending portion 113 partially overlap; and

[0057] in the front - back direction, the front end face of the first extension portion 115 is located between the front - back adjacent first bending portion 113 and the second bending portion 117, and the rear end face of the first extension portion 115 is also located between the front - back adjacent first bending portion 113 and the second bending portion 117. When the first extension portion 115 is fixed to the circuit board P, the holding force between the two does not need to change the conduction direction, and directly conducts along the left - right direction from the first extension portion 115 to the connecting portion 116, the first bending portion 113, and the second bending portion 117. As a result, the holding force borne by the first bending portion 113, the connecting portion 116, and the second bending portion 117 is also greater, which is beneficial to the more tightly fixing between the metal part 11 as a whole and the circuit board P. At the same time, when the upward abutting force given by the circuit board P to the conductive terminal 3 causes the insulating body 2 accommodating the conductive terminal 3 to give an upward acting force to the metal part 11, the upward acting force received by the first bending portion 113, the second bending portion 117, and the connecting portion 116 can also be directly conducted along the left - right direction to the first extension portion 115, so that the first extension portion 115 also bears part of the upward acting force. At this time, there is a holding force between the first extension portion 115 and the circuit board P, and this upward acting force and the holding force are in opposite directions and can partially cancel each other out, thus preventing the first bending portion 113, the second bending portion 117, and the connecting portion 116 from bearing all the upward acting forces and being easily bent due to excessive stress.

[0058] 5. By setting that the locking element S passes through the fixing hole 115b in the up - down direction to fix the metal part 11 to the circuit board P, and at the same time, in the up - down direction, the projection of the first fixing portion 115a and the projection of the second fixing portion 118a partially overlap. The second fixing portion 118a is indirectly fixed to the circuit board P by means of the first fixing portion 115a and the locking element S, increasing the thickness of the fixed part of the metal part 11 below the locking element S, thereby increasing the fixing strength between the metal part 11 and the circuit board P, making the first fixing portion 115a not easily deformed, and at the same time enabling the terminal portion 114 and the connecting portion 116 to be connected and fixed to the circuit board P through the first fixing portion 115a and the locking element S at the same time, reducing the area of the circuit board P occupied.

[0059] 6. By setting the projections of the second fixing part 118a and the locking element S to partially overlap in the up-down direction, the locking element S locks the second fixing part 118a downward, making it difficult for the second fixing part 118a to displace in the front-back direction. At the same time, since the second fixing part 118a is formed by extending from the second bending part 117 in the front-back direction, when the locking element S locks the second fixing part 118a downward, it also makes it difficult for the second bending part 117 to warp and deform. By setting that there is a plastic groove 119 between the two second fixing parts 118a in the front-back direction; in the up-down direction, the fixing hole 115b and the plastic groove 119 communicate with each other, and a part of the first fixing part 115a is exposed in the plastic groove 119, and the plastic upper cover 1 is partially injection-molded in the plastic groove 119, to avoid that when the free end surface of the second fixing part 118a is flush with the inner wall of the first through hole 511 in the front-back direction, due to manufacturing tolerances, part of the second fixing part 118a will be exposed in the fixing hole 115b, affecting the subsequent fixing of the locking element S and the circuit board P. At the same time, by setting that the plastic upper cover 1 is partially injection-molded in the plastic groove 119, it also makes the plastic cover body 12 and the first fixing part 115a and the second fixing part 118a more tightly combined.

[0060] 7. By setting the flat part 51 extending in the left-right direction to cover and connect to the shielding layers 42 of multiple cables 4; and the flat part 51 is exposed in the first through groove 112 and the second through groove 121, and the plastic inner mold 6 is partially injection-molded on the flat part 51, so that the part of the plastic inner mold 6 injection-molded downward from the first through groove 112 and the second through groove 121 on the cable 4 has increased strength because it covers the flat part 51 made of metal material. At the same time, by setting that in the up-down direction, the accommodation space 20 communicates with the first through groove 112 and the second through groove 121, and the plastic inner mold 6 is partially injection-molded on the flat part 51 and the accommodation space 20, so that this part of the plastic inner mold 6 extends from the accommodation space 20 to the flat

[0061] part 51 in the front-back direction, increasing the width of this part of the plastic inner mold 6 in the front-back direction and further increasing the strength of the plastic inner mold 6.

[0062] 8. By setting the upper surface of the grounding part 322 to be exposed in the accommodation space 20 and connected to the grounding finger 52, a bridging part 54

[0063] Extending in the left - right direction and connecting multiple abutting portions 53, and both the multiple abutting portions 53 and the bridging portion 54 extend forward beyond the core 41. While increasing the grounding return path, compared with the case where they are flush with the core 41 in the front - back direction, the distance between the core 41 and the abutting portions 53 and the bridging portion 54 is increased, which increases the impedance of the core 41 and is beneficial to the impedance matching of the cable 4. At the same time, both the multiple abutting portions 53 and the bridging portion 54 extend forward beyond the cable 4 and abut forward against the front wall surface of the receiving groove. When the cable 4 and the grounding finger 52 are connected to the conductive terminal 3, the abutting portions 53 and the bridging portion 54 first abut against the front wall surface of the receiving space 20 for pre - positioning, which facilitates the subsequent alignment and connection of the cable 4 and the grounding finger 52 with the wiring portion 312 and the grounding portion 322 respectively. At the same time, the plastic inner mold 6 is partially injection - molded on the bridging portion 54, which further increases the strength of the plastic inner mold 6 covering the wiring portion 312 and the grounding portion 322.

[0064] 9. By providing a plurality of through - holes 511 penetrating the flat plate portion 51 in the up - down direction, and the through - holes 511 are located between two adjacent cables 4 in the left - right direction. After the plastic inner mold 6 is injection - molded in the through - holes 511, the area of the cable 4 covered by the plastic inner mold 6 is larger, making the combination of the cable 4 and the plastic inner mold 6 closer. At the same time, by providing that the first snap - fit groove 22 communicates with the through - holes 511 in the up - down direction; the plastic inner mold 6 is partially injection - molded in the through - holes 511 and the first snap - fit groove 22, and the plastic inner mold 6 passes through the through - holes 511 in the up - down direction and is further received in the first snap - fit groove 22, preventing the plastic inner mold 6 from being blocked by the flat plate portion 51 in the up - down direction. While strengthening the strength of the plastic inner mold 6, the plastic inner mold 6 and the insulating body 2 are mutually limited in the up - down direction.

[0065] 10. By providing that the first receiving groove 21 and the second receiving groove 122 communicate with each other in the up - down direction; the plastic inner mold 6 is partially injection - molded in the first receiving groove 21 and the second receiving groove 122, so that the plastic inner mold 6 restricts the upward displacement of the upper cover 1, and the plastic inner mold 6 restricts the downward displacement of the insulating body 2, enabling the upper cover 1 and the insulating body 2 to achieve accurate alignment in the up - down direction through the plastic inner mold 6. At the same time, the front surface and the bottom surface of the metal part 11 are exposed in the first receiving groove 21, and also enabling the plastic inner mold 6 to directly cover the front surface and the bottom surface of the metal part 11, enhancing the bonding strength between the plastic inner mold 6 and the metal part 11, and also being beneficial to preventing the front end surface of the metal part 11 from bending.

[0066] 11. The first plastic block 61 is injection-molded from the first receiving groove 21 or the second receiving groove 122, and the second plastic block 62 is injection-molded from the first through groove 112 or the second through groove 121. The first plastic block 61 is fixed to the first receiving groove 21 and the second receiving groove 122, and the second plastic block 62 is at least partially fixed to the first through groove 112 and the second through groove 121, so that the plastic inner mold 6 can not only be injection-molded along the front-back direction, but also be injection-molded along the up-down direction through the first through groove 112 and the second through groove 121, increasing the glue injection channels and avoiding the situation that when the plastic inner mold 6 is only injection-molded along the front-back direction, not only the injection time is longer, but also it is difficult for the plastic to completely fill the gap between the upper cover 1 and the insulating body 2.

[0067] 12. By setting the second plastic block 62 and the protruding portion 123 to be mutually limited in the up-down direction, a firm connection between the plastic inner mold 6 and the upper cover 1 is achieved, and the second plastic block 62 is not easily displaced in the second through groove 121. At the same time, by setting the protruding portion 123 to protrude from the front wall surface of the second through groove 121, and the front wall surface of the second through groove 121 extending backward beyond the front wall surface of the receiving space 20, when the second plastic block 62 is partially injection-molded in the receiving space 20 below the protruding portion 123, due to the restrictions of the receiving space 20 and the upper cover 1, the second plastic block 62 is not easily displaced in both the up-down and front-back directions.

[0068] 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 creative specification and drawings are included in the patent scope of this creation.

Claims

1. An electrical connector for mounting to a circuit board, characterized in that, Comprising: Insulating body; A plurality of conductive terminals are fixed to the insulating body. The conductive terminals have a contact portion, and the contact portion extends out of the insulating body and elastically abuts against the circuit board downward; An upper cover covers the insulating body from above and is fixed to the circuit board. The upper cover includes a metal part and a plastic cover body injection-molded on the metal part; The metal part has a main body portion and a first through groove, and the first through groove penetrates the main body portion in the up and down direction; The plastic cover body includes a second through groove, and the second through groove penetrates the plastic cover body in the up and down direction and is arranged corresponding to the first through groove in the up and down direction; A plastic inner mold is at least partially injection-molded in the first through groove and the second through groove.

2. The electrical connector according to claim 1, wherein: The conductive terminals include a plurality of signal terminals. Each signal terminal has a wiring portion, and the upper surface of the wiring portion is exposed from the insulating body and is electrically connected to one end of the cable. The plastic inner mold is coated on the wiring portion and the cable electrically connected to the wiring portion to fix the cable, and the other end of the cable extends backward out of the plastic inner mold.

3. The electrical connector according to claim 1, wherein: A first bent portion is formed by bending and extending downward from the inner wall of the first through groove.

4. The electrical connector according to claim 3, wherein: The plurality of conductive terminals are arranged side by side in the left and right directions. The left and right sides of the upper cover are fixed to the circuit board. The first through groove extends in the left and right directions, and the first bent portion is located on the front side and / or the rear side of the first through groove and extends in the left and right directions.

5. The electrical connector according to claim 3, wherein: The first bent portion is located on the front side and / or the rear side of the first through groove and extends in the left and right directions. The main body portion further includes two connecting portions and two terminal portions. The two connecting portions are respectively located on the front side and the rear side of the first through groove, and the two terminal portions are respectively located on the left side and the right side of the first through groove; A first extending portion is formed by bending and extending downward from each terminal portion away from the first through groove in the left and right directions, and the first extending portion is used to be fixed to the circuit board; A second bent portion is formed by bending and extending downward from each connecting portion away from the first through groove in the front and rear directions, and a second extending portion is formed by extending from the second bent portion, and the second extending portion is used to be fixed to the circuit board.

6. The electrical connector according to claim 5, wherein: In the left and right directions, the projection of the first extending portion and the projection of the first bent portion at least partially overlap; And the first extending portion has a front end face and a rear end face opposite to each other. In the front and rear directions, the front end face is located between the first bent portion and the second bent portion adjacent in the front and rear, and the rear end face is located between the first bent portion and the second bent portion adjacent in the front and rear.

7. The electrical connector according to claim 5, characterized in that: The first extending portion includes a first fixing portion horizontally bent and extending from the terminal portion away from the first through groove in the left and right directions, and a fixing hole penetrates the first fixing portion in the up and down direction; The second extending portion includes a second fixing portion horizontally extending in the front and rear directions toward the first fixing portion. In the up and down direction, the projection of the first fixing portion and the projection of the second fixing portion at least partially overlap, and a locking element passes through the fixing hole in the up and down direction to fix the first extending portion to the circuit board.

8. The electrical connector according to claim 7, characterized in that: In the up and down direction, the projection of the second fixing portion and the projection of the locking element at least partially overlap; In the front and rear directions, there is a plastic groove between the two second fixing portions. In the up and down direction, the fixing hole communicates with the plastic groove, and the first fixing portion is partially exposed in the plastic groove, and the plastic cover body is at least partially injection-molded in the plastic groove.

9. The electrical connector according to claim 1, wherein: The conductive terminal includes a plurality of signal terminals, and each signal terminal has a wiring portion; a receiving space is recessed downward from the upper surface of the insulating body, and along the up and down direction, the receiving space communicates with the first through groove and the second through groove, and the upper surface of the wiring portion is exposed in the receiving space and connected to the cable; a grounding member has a flat plate portion extending in the left and right direction, the flat plate portion covers and is fixed to the shielding layer of the cable, and the flat plate portion is exposed in the first through groove and the second through groove, and the plastic inner mold is at least partially injection-molded on the flat plate portion and the receiving space.

10. The electrical connector according to claim 9, wherein: The conductive terminal further includes a plurality of grounding terminals, and each grounding terminal has a grounding portion; the grounding member further includes a plurality of grounding fingers extending forward from the flat plate portion, and a contact portion is formed by bending upward from the grounding fingers, a bridging portion extends in the left and right direction and connects the plurality of contact portions, the upper surface of the grounding portion is exposed in the receiving space and connected to the grounding fingers, the plurality of contact portions and the bridging portion are all exposed in the receiving space, and the plurality of contact portions and the bridging portion all extend forward beyond the cable and forwardly abut against the front wall surface of the receiving space, along the up and down direction, the receiving space and the first through groove communicate with each other, and the plastic inner mold at least partially covers the wiring portion and the grounding portion and is injection-molded on the bridging portion.

11. The electrical connector according to claim 9, characterized in that: The grounding member further includes a plurality of through holes penetrating the flat plate portion in the up and down direction, and the through holes are located between two adjacent cables in the left and right direction; a plurality of first snap grooves are recessed downward from the upper surface of the insulating body, and the first snap grooves communicate with the through holes in the up and down direction; the plastic inner mold is at least partially injection-molded on the through holes and the first snap grooves, and the plastic inner mold and the insulating body are mutually limited in the up and down direction.

12. The electrical connector according to claim 9, wherein: A protruding portion protrudes from the inner wall of the second through groove, and the plastic inner mold and the protruding portion are mutually limited in the up and down direction.

13. The electrical connector according to claim 12, wherein: At least one protruding portion protrudes from the front wall surface of the second through groove, and the front wall surface of the second through groove extends backward beyond the front wall surface of the receiving space.

14. The electrical connector according to claim 1, wherein: A plurality of first receiving grooves are recessed backward from the front side wall of the plastic cover body, and the front surface and the bottom surface of the metal member are both exposed in the first receiving grooves; a plurality of second receiving grooves are recessed backward from the front end surface of the insulating body, and the first receiving grooves and the second receiving grooves communicate with each other in the up and down direction; the plastic inner mold is partially injection-molded on the first receiving grooves and the second receiving grooves, so that the plastic inner mold restricts the upward displacement of the upper cover, and the plastic inner mold restricts the downward displacement of the insulating body.

15. The electrical connector according to claim 14, wherein: The plastic inner mold includes a first plastic block and a second plastic block, the first plastic block is injection-molded from the first receiving groove or the second receiving groove, the second plastic block is injection-molded from the first through groove or the second through groove, the first plastic block is fixed to the first receiving groove and the second receiving groove, and the second plastic block is at least partially fixed to the first through groove and the second through groove.

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