Reinforced double-layer terminal card edge connector with ESD protection function

Abstract

The application provides a reinforced double-layer terminal card edge connector with ESD protection function, which comprises an insulating body with a plurality of terminal slots and a plurality of insertion slots, and a tower part is arranged at each end of the insulating body, and a clamping slot is formed in the tower part; a plurality of terminals are correspondingly accommodated in the terminal slots in the two longitudinal side walls, at least a part of the terminal slots are provided with double-layer terminals, and the remaining terminal slots are provided with single-layer terminals; at least one ear buckle is accommodated in the accommodating slot of each tower part; and at least one metal piece is sleeved on the corresponding tower part, the metal piece extends into the clamping slot and is provided with at least one spring sheet which is in contact with a metal conductive contact piece protruding from the surface of an electronic module, the metal piece covers the periphery of the tower part, and the metal piece is electrically connected with the ground layer of a circuit board through an independent iron foot fixed at the end of the bottom surface of the insulating body or a welding foot integrally connected with the metal piece; the reinforced double-layer terminal card edge connector with ESD protection function can greatly improve the signal transmission efficiency of the electronic module.

Description

Technical Field

[0001] This invention belongs to the field of connectors, and specifically relates to a reinforced double-layer terminal block connector with ESD protection. Background Technology

[0002] In modern electronic devices, connectors are core components for signal transmission, and their performance stability directly affects the overall operation of the device. However, static electricity, as a common environmental interference factor, can cause significant damage to connectors.

[0003] The threat of electrostatic discharge (ESD) to connectors manifests primarily in two ways. First, the high-voltage current generated instantaneously by ESD can directly puncture the connector's internal precision contacts or insulating materials, leading to physical damage such as oxidation of metal contacts, plating peeling, or even short circuits. Second, even without visible damage, ESD interference can alter the connector's electrical characteristics, such as increasing contact resistance or reducing signal transmission efficiency, thereby affecting the long-term stability of the device. For high-frequency signal transmission scenarios, the electromagnetic interference problem caused by ESD is particularly prominent.

[0004] Chinese patent CN201510236256.7 discloses a card edge connector and a card edge connector assembly, including an insulating body. The insulating body includes a card slot and a tower portion. The tower portion faces the card slot in an inward direction. The tower portion includes a first sidewall and a second sidewall extending in the inward direction, a first guide member, and a second guide member. The first guide member and the second guide member extend opposite each other in a direction transverse to the first sidewall and the second sidewall. A first mounting groove is formed between the first sidewall and the first guide member, and a second mounting groove is formed between the second sidewall and the second guide member. The first guide member and the second guide member constitute a guide... The device includes a groove and a metal reinforcement member comprising: a base; a first side portion and a second side portion extending inward from both sides of the base portion; and a first elastic arm and a second elastic arm extending laterally from the first side portion and the second side portion toward the guide groove, respectively; wherein the first side portion and the second side portion are respectively mounted in the first mounting groove and the second mounting groove, and the first elastic arm and the second elastic arm are respectively adjacent to the sides of the first guide member and the second guide member, and laterally extend beyond the lateral coverage of the first guide member and the second guide member to extend into the guide groove.

[0005] When the electronic card is inserted into the card slot, the first and second elastic arms clamp the two sides of the electronic card to make the insertion of the electronic card more stable, shockproof and anti-shaking.

[0006] The card edge connector also includes a first auxiliary component and a second auxiliary component. The first auxiliary component may have a bottom solder surface for soldering onto a circuit board.

[0007] The aforementioned card edge connector and card edge connector assembly clamp the two sides of the electronic card's edge using the first and second elastic arms to make the electronic card insertion more stable, shockproof, and anti-shake. However, the first and second elastic arms cannot be used to conduct static electricity from the electronic card to the first auxiliary component, making the aforementioned card edge connector and card edge connector assembly prone to electromagnetic interference caused by static electricity when transmitting high-frequency signals. Therefore, improvements are needed. Summary of the Invention

[0008] The purpose of this invention is to provide a reinforced double-layer terminal block connector with ESD protection to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the technical solution used in this invention is as follows: A reinforced double-layer terminal block connector with ESD protection includes: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module. Multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. A tower is provided at each end of the insulating body. The tower has a slot that communicates with the slot and is used to accommodate the end of the electronic module. Multiple terminals are respectively housed in corresponding terminal slots within the two longitudinal side walls. At least a portion of the terminal slots are equipped with double-layer terminals, while the remaining terminal slots are equipped with single-layer terminals. At least one ear clip is received in the receiving slot of the corresponding tower section and pivotally connected to the tower section; and At least one metal component is fitted onto the corresponding tower section to reinforce the tower section. The metal component extends into the slot with at least one spring piece that contacts the protruding metal conductive contact piece on the surface of the electronic module. The metal component covers the outer perimeter of the tower section. The metal component is electrically connected to the ground layer of the circuit board through an independent iron foot fixed to the bottom end of the insulating body or a welded foot integrally connected to the metal component.

[0010] Furthermore, the tower portion faces the slot inward and away from the slot inward, and the tower portion includes a connecting wall located outside the slot and a limiting wall connected to both sides of the connecting wall and parallel to the length direction of the slot. The metal part includes a main body that is respectively fitted onto the limiting wall on both sides of the slot. The main bodies on both sides of the slot are connected by a connecting part passing through the top surface of the connecting wall. The opposite sides of the main bodies on both sides of the slot are provided with the spring piece that extends into the slot.

[0011] Furthermore, each of the opposite sides of the main body located on both sides of the slot is connected to a covering plate that covers the surface of the tower. At least one covering plate connected to the main body is electrically connected to the ground layer of the circuit board through an independent iron foot or a welded foot integrally connected to the covering plate.

[0012] Furthermore, each of the aforementioned covering pieces includes a vertical piece and a horizontal piece. A vertical piece and a horizontal piece of the covering piece are provided on the opposite side of the tower. The upper end of each vertical piece is connected to the main body, the lower end of each vertical piece is connected to one end of the horizontal piece, and the other end of the horizontal piece is bent toward the outer side of the tower to form an extension piece. The receiving groove penetrates the outer side of the tower and the bottom surface of the insulating body. The bottom of the insulating body has a mounting part on the outside of the receiving groove. The mounting part is provided with an embedding groove for the iron foot to be embedded and installed through the top and bottom of the mounting part. One of the extension pieces of the covering piece has a contact piece at its end that bends upward over the top surface of the mounting part and then bends downward into the embedding groove and extends out of the bottom of the embedding groove. The contact piece contacts the iron foot in the embedding groove. The other extension piece of the covering piece has a fastener at its end that bends upward and is folded over the top surface of the mounting part.

[0013] Furthermore, the iron foot includes a fixed body portion and a welding portion extending downward from the lower end of the fixed body portion, and the upper end of the fixed body portion extends upward to form a contact arm that contacts the contact piece.

[0014] Furthermore, at least one of the cladding sheets has a solder pad extending downwards from the bottom of the cross section, and the solder pad is electrically connected to the ground plane of the circuit board.

[0015] Furthermore, the solder foot extends vertically downward from the bottom of the horizontal strip of the cover sheet, and the solder foot penetrates the circuit board vertically.

[0016] Furthermore, the ends of the two extension pieces on the outer side of the tower are fixed to each other by spot welding, and the contact arm and the contact piece are fixed to each other by spot welding.

[0017] Furthermore, each of the aforementioned covering pieces includes a vertical piece and a horizontal piece. A vertical piece and a horizontal piece of the covering piece are provided on the opposite side of the tower. The upper end of each vertical piece is connected to the main body, the lower end of each vertical piece is connected to one end of the horizontal piece, and the other end of the horizontal piece is bent toward the outer side of the tower to form an extension piece. The receiving groove penetrates the outer side of the tower and the bottom surface of the insulating body. The bottom of the insulating body has a mounting part on the outside of the receiving groove, and the mounting part is provided with an embedding groove penetrating the top and bottom surfaces of the mounting part. One of the extension pieces of the covering sheet is bent upwards over the top surface of the mounting part and then bent downwards through the embedding groove to form the welding foot.

[0018] Furthermore, at least one of the cladding sheets has a solder pad extending downwards from the bottom of the cross section, and the solder pad is electrically connected to the ground plane of the circuit board.

[0019] Furthermore, the solder foot extends vertically downward from the bottom of the horizontal strip of the covering sheet and then bends horizontally towards the center line of the bottom length direction of the insulating body, with the solder foot flat against the surface of the circuit board.

[0020] Furthermore, the ends of the two extension pieces on the outer side of the tower are fixed to each other by spot welding.

[0021] Furthermore, the bottom of each of the two vertical pieces of the covering sheet is bent toward the bottom surface of the insulating body to form a fastening part that fastens to the bottom of the two side walls of the receiving groove along the length direction of the insulating body.

[0022] Furthermore, each of the main bodies includes a top plate and a side plate. The top plate is located on the top surface of the limiting wall, and the side plate is located on the inner side of the limiting wall. The inner side of each top plate is connected to the upper end of the side plate, the outer sides of the two top plates are connected through the connecting part, and the opposite sides of the two side plates are connected to the spring piece. The opposite sides of the top plates of the two main bodies located on both sides of the card slot are connected to the corresponding covering pieces.

[0023] Furthermore, the opposite sides of the two side plates are bent outward to form a bent portion that extends into the slot. The upper side of the portion of the bent portion extending into the slot has a stop protruding from the inner wall of the slot. The lower side of the portion of the bent portion extending into the slot extends downward to form the spring piece. The spring piece is inclined and protrudes into the slot.

[0024] Furthermore, the outer side of the connecting portion bends downward to form a fastening portion located on the outer side of the connecting wall, and the outer surface of the connecting wall protrudes to form a protrusion that engages with the fastening portion.

[0025] Furthermore, the opposing sides of the top plates of the two main bodies are bent downwards to form guide portions that extend into the slots.

[0026] Furthermore, the bottom of each of the side plates extends downward to form a snap-in portion, and the inner side of the limiting wall is provided with a snap-in groove. The top and upper inner side of the snap-in groove are open, and the bottom of the snap-in groove is closed, so that the snap-in portion snaps into the snap-in groove.

[0027] The main advantages of this invention compared to existing technologies are as follows: (1) The strength of the tower can be increased by setting metal parts on the tower.

[0028] (2) By setting a spring on the metal part, setting a metal conductive contact on the electronic module to contact the spring, and the metal part to contact the iron foot or the metal part itself to have a solder foot that is electrically connected to the ground layer of the circuit board, the static electricity of the electronic module can be conducted to the iron foot or solder foot through the metal conductive contact, spring, and metal part. The iron foot or solder foot is then short-circuited to the ground layer of the circuit board. When transmitting high frequency signals, the problem of electromagnetic interference caused by static electricity can be effectively solved, and the signal transmission efficiency can be greatly improved.

[0029] (3) The guide section makes it easier and smoother to insert the electronic module into the card slot.

[0030] (4) By engaging the fastening part and the protrusion, and by setting the stop and the bending part, and by engaging the snap-in part and the snap-in groove, and by setting the holding part to fasten the bottom of the two side walls of the receiving groove, the metal part is fixed on the outside and inside of the tower, preventing the metal part from detaching from the tower.

[0031] (5) By covering the surface of the tower with a cladding sheet and connecting the cladding sheet to the grounding layer of the circuit board, a shielding effect can be formed, suppressing electromagnetic interference and improving communication quality. Attached Figure Description

[0032] Figure 1 This is an exploded perspective view of the connector, electronic module, and circuit board of the reinforced double-layer terminal edge connector with ESD protection according to Embodiment 1 of the present invention. Figure 2 for Figure 1 A three-dimensional composite diagram; Figure 3 for Figure 1 A three-dimensional view of some of the terminals; Figure 4 for Figure 1 Front view of the terminal in the middle; Figure 5 for Figure 1 Partial exploded perspective view of the connector, ear clips, and metal parts; Figure 6 for Figure 5 A partial three-dimensional composite diagram; Figure 7 To remove Figure 6 A partial 3D composite image of the ear loops; Figure 8 for Figure 7 Three-dimensional from another perspective Figure 1 ; Figure 9 for Figure 7 Three-dimensional from another perspective Figure 2 ; Figure 10 for Figure 5 A partial three-dimensional view of the insulating body; Figure 11 for Figure 5 A three-dimensional view of the metal parts in the design; Figure 12 for Figure 11 A stereoscopic view from another perspective; Figure 13 for Figure 5 A 3D diagram of the earrings; Figure 14 for Figure 6 A partial sectional view along the length of the insulating body; Figure 15 for Figure 6 A cross-sectional view along the width of the insulating body; Figure 16 for Figure 6 A schematic diagram showing its integration with a circuit board; Figure 17 This is a partial three-dimensional assembly diagram of the connector, ear clip, and metal parts of Embodiment 2 of the reinforced double-layer terminal edge connector with ESD protection function of the present invention. Figure 18 for Figure 17 A three-dimensional view of the metal parts in the design; Figure 19 for Figure 18 A stereoscopic view from another perspective; Figure 20 for Figure 17 A partial sectional view along the length of the insulating body; Figure 21 To remove Figure 17 A 3D image of the ear loops in the image; Figure 22 for Figure 21 A stereoscopic view from another perspective; Figure 23 for Figure 21 A schematic diagram showing its integration with a circuit board; Figure 24 This is a partial three-dimensional view of the connector and metal parts in Embodiment 3 of the reinforced double-layer terminal edge connector with ESD protection function of the present invention. Figure 25 for Figure 24 A three-dimensional view of the metal parts in the design; Figure 26 for Figure 25 A stereoscopic view from another perspective; Figure 27 for Figure 24 A schematic diagram showing its integration with a circuit board.

[0033] Reference numerals: Insulating body 1, slot 11, longitudinal side wall 12, tower 13, slot 131, connecting wall 132, protrusion 1321, limiting wall 133, stop block 1331, snap-in groove 1332, receiving groove 134, snap-in groove 1341, pivot groove 1342, mounting part 14, terminal groove 15, foolproof part 16, terminal 2, fixing part 21, arm part 22, contact part 23, welding part 24, ear buckle 3, main body part 31, pivot shaft 32, fastening block 33, ejection part 34, bending Opening part 35, metal part 4, main body 41, top plate 411, side plate 412, bending part 413, snap-in part 414, connecting part 42, fastening part 421, guiding part 43, spring piece 44, covering piece 45, vertical piece 451, horizontal piece 452, welding foot 4521, extension piece 453, contact piece 454, fastening piece 455, holding part 456, welding foot 457, iron foot 5, fixed main body part 51, welding part 52, contact arm 53, electronic module 6, metal conductive contact piece 61, circuit board 7. Detailed Implementation

[0034] To facilitate a better understanding of the purpose, structure, features, and effects of this invention, the invention will now be further described in conjunction with the accompanying drawings and specific embodiments. Example 1

[0035] like Figure 1-16 As shown, the reinforced double-layer terminal block connector with ESD protection includes an insulating body 1, multiple terminals 2 housed within the insulating body 1, two ear clips 3 and two metal parts 4 disposed at both ends of the insulating body 1, and iron feet 5 disposed at both ends of the bottom of the insulating body 1.

[0036] The top surface of the insulating body 1 has a longitudinally recessed slot 11 formed in the middle. The slot 11 is used to insert an electronic module 6. Longitudinal sidewalls 12 are arranged along the length of the slot 11 on both sides. A tower portion 13 is provided at each end of the slot 11. Multiple terminal slots 15 are provided on both sides of the longitudinal sidewalls 12 of the slot 11. Each terminal slot 15 penetrates the bottom surface of the insulating body 1, penetrates the slot-facing surface of the longitudinal sidewall 12, and also penetrates the top surface of the longitudinal sidewall 12. A foolproof part 16 is provided inside the slot 11, connecting the two longitudinal sidewalls 12. The foolproof part 16 divides the slot 11 into a slot one and a slot two shorter than slot one. The foolproof part 16 is used to prevent the electronic module 6 from being inserted backwards.

[0037] The tower portion 13 is oriented inwards towards the slot 11 and outwards away from the slot 11. A slot 131, communicating with the slot 11 and used to accommodate the end of the electronic module 6, is formed on the inner side of the tower portion 13 facing the slot 11. The slot 131 extends upwards through the top surface of the tower portion 13 and downwards through the bottom surface of the insulating body 1. The outer sidewall of the slot 131 is a connecting wall 132, and the two opposite sidewalls of the slot 131 are limiting walls 133. The two limiting walls 133 are connected to both sides of the connecting wall 132 and are parallel to the length direction of the slot 11. Opposite surfaces of the two limiting walls 133 protrude to form blocks 1331. The outer side of the connecting wall 132 protrudes to form two protrusions 1321. An insertion groove 1332 is formed on the inner side of the limiting wall 133. The top and upper inner side of the insertion groove 1332 are open, while the bottom of the insertion groove 1332 is closed.

[0038] The tower section 13 is also provided with a receiving groove 134, which is located outside the slot 131. The receiving groove 134 penetrates the top surface, outer side surface and bottom surface of the insulating body 1 of the tower section 13, and communicates with the slot 131 below the connecting wall 132. The upper part of the two opposite side walls of the receiving groove 134 is provided with a latching groove 1341, and the two opposite side walls of the receiving groove 1344 are provided with a pivoting groove 1342 below the latching groove 1341.

[0039] The bottom of the insulating body 1 has a mounting part 14 for mounting the iron foot 5 on the outside of the receiving groove 134. The mounting part 14 is provided with an embedding groove that penetrates the top and bottom sides of the mounting part 14. The upper part of the iron foot 5 is embedded in the embedding groove.

[0040] The plurality of terminals 2 are respectively housed in corresponding terminal slots within the two longitudinal sidewalls 12. Some of the terminals 2 within each longitudinal sidewall 12 are configured as double-layer terminals, that is, at least a portion of the terminal slots 15 are configured with double-layer terminals (either in one terminal slot 15 on one or two longitudinal sidewalls 12, or in multiple spaced terminal slots 15 on one or two longitudinal sidewalls 12), while the remaining terminal slots 15 are single-layer terminals.

[0041] The double-layer terminal includes a lower layer terminal and an upper layer terminal. The single-layer terminals in the remaining terminal slots 15 are flush with the lower layer terminals and form a row. Each of the upper layer terminal, lower layer terminal, and single-layer terminal includes a fixing part 21. The fixing part 21 extends upward to form an arm 22. The end of the arm 22 forms a contact part 23 facing the slot 11. The lower end of the fixing part 21 is connected to a soldering part 24. The contact parts 23 of the upper layer terminal, the lower layer terminal, and the single-layer terminal all face the same direction (all facing the slot 11). The contact part 23 of the upper layer terminal is higher than the contact part 23 of the lower layer terminal. The contact part 23 of the lower layer terminal is at the same height as the contact part 23 of the single-layer terminal. The soldering part 24 of the upper layer terminal, the lower layer terminal, and the single-layer terminal all face the same direction (all away from the slot 11).

[0042] Each of the aforementioned ear clips 3 is pivotally connected to the tower portion 13 of the insulating body 1. The ear clip 3 includes a main body portion 31, with pivot shafts 32 and fastening blocks 33 protruding from both sides of the main body portion 31. The fastening blocks 33 are located above the pivot shafts 32, which are used to pivotally connect to the side wall inside the tower portion 13. The fastening blocks 33 are used to fasten the ear clip 3 to the side wall inside the tower portion 13, positioning the ear clip 3 after it is fastened onto the electronic module 6. The bottom of the main body 31 protrudes towards the slot 11 to form an ejector portion 34, used to eject the electronic module 6 upwards. The top of the main body 31 is provided with a lever opening portion 35. By manually levering the lever opening portion 35, the ear clip 3 can rotate around the pivot shaft 32 and eject the electronic module 6 upwards through the ejector portion 34.

[0043] Each of the metal parts 4 is fitted onto the corresponding tower section 13 to reinforce the tower section 13. Each metal part 4 extends a spring piece 44 into the slot 131 and contacts the protruding metal conductive contact piece 61 on the surface of the electronic module 6. Each metal part 4 covers the outer perimeter of the tower section 13 and contacts the corresponding iron foot 5.

[0044] The metal component 4 includes a main body 41 on each side of the slot 131, which is respectively fitted onto the limiting wall 133. The main bodies 41 on both sides of the slot 131 are connected by a connecting part 42 passing through the top surface of the connecting wall 132. A covering piece 45 covering the surface of the tower portion 13 is connected to the opposite sides of the main bodies 41 on both sides of the slot 131. The covering piece 45 connected to one main body 41 contacts the corresponding iron foot 5. Guide parts 43 and spring pieces 44 extending into the slot 131 are provided on the opposite sides of the main bodies 41 on both sides of the slot 131. Metal conductive contacts 61 protrude from both sides of the electronic module 6 and contact the corresponding spring pieces 44.

[0045] Each of the main bodies 41 includes a top plate 411 and a side plate 412. The top plate 411 is located on the top surface of the limiting wall 133, and the side plate 412 is located on the inner side of the limiting wall 133. The inner side of each top plate 411 is connected to the upper end of the side plate 412 and is perpendicular to each other. The outer sides of the two top plates 411 are connected by the connecting part 42. The opposite sides of the top plates 411 of the two main bodies 41 are bent downward to form the guide part 43, and the opposite sides of the two side plates 412 are connected to the spring piece 44.

[0046] The opposing sides of the two side plates 412 are bent outward to form bent portions 413 that extend into the slot 131. A stop block 1331 is located on the upper side of the portion of the bent portion 413 extending into the slot 131 to block the bent portion 413 from above and prevent it from slipping upward. The lower side of the portion of the bent portion 413 extending into the slot 131 extends downward to form a spring tab 44. The spring tab 44 is inclined and protrudes into the slot 131 to form good contact with the metal conductive contact 61. The bottom of each side plate 412 extends downward to form a snap-in portion 414, which snaps into the snap-in groove 1332.

[0047] The outer side of the connecting part 42 bends downward to form a fastening part 421 located on the outer side of the connecting wall 132. The fastening part 421 has fastening holes, and there are two fastening parts 421. The protruding protrusion 1321 on the outer surface of the connecting wall 132 engages with the fastening holes of the fastening part 421 to prevent the metal part 4 from detaching upward from the tower part 13.

[0048] Each of the aforementioned covering pieces 45 includes a vertical piece 451 and a horizontal piece 452. Each of the opposite sides of the tower portion 13 is provided with a vertical piece 451 and a horizontal piece 452 of the covering piece 45. The upper end of each vertical piece 451 is connected to the main body 41, and the lower end of each vertical piece 451 is connected to one end of the horizontal piece 452. The other end of the horizontal piece 452 is bent toward the outer side of the tower portion 13 to form an extension piece 453.

[0049] Of the two shielding plates 45, the end of the extension plate 453 of one shielding plate 45 is provided with a contact plate 454 that bends upward past the top surface of the mounting part 14, then bends downward to extend into the embedding groove and protrude beyond the bottom of the embedding groove. The contact plate 454 contacts the iron foot 5 in the embedding groove, and the contact plate 454 and the iron foot 5 are fixed to each other by spot welding. The end of the extension plate 453 of the other shielding plate 45 is provided with a fastener 455 that bends upward and folds against the top surface of the mounting part 14, so that the shielding plate 45 is firmly installed. The ends of the two extension plates 453 on the outer side of the tower part 13 are fixed to each other by spot welding. The two shielding plates 45 on the outer side of the tower part 13 are connected to each other by spot welding, and are also connected to the iron foot 5 by spot welding, so that the shielding plate 45 forms a shielding shell effect, suppresses electromagnetic interference, and improves communication quality.

[0050] The bottom of the horizontal pieces 452 of the two covering pieces 45 extends downward with solder feet 4521. The solder feet 4521 are electrically connected to the ground layer of the circuit board 7, which not only grounds the circuit board but also increases the gripping force of the clamping connector. The solder feet 4521 extend vertically downward from the bottom of the horizontal pieces 452 of the covering pieces 45 and penetrate the circuit board 7 vertically. The bottom of the vertical pieces 451 of the two covering pieces 45 are bent towards the bottom surface of the insulating body 1 to form a fastening part 456 at the bottom of the two side walls of the receiving groove 134 along the length of the insulating body 1, so as to make the metal part 4 more securely installed.

[0051] The iron foot 5 is used to fix the insulating body 1 to the circuit board 7, and the iron foot 5 is electrically connected to the ground layer of the circuit board 7. The iron foot 5 includes a fixing body part 51 and a welding part 52 extending downward from the lower end of the fixing body part 51. The upper end of the fixing body part 51 extends upward to form a contact arm 53. The fixing body part 51 is fixed in the embedding groove. The contact arm 53 extends out of the top surface of the mounting part 14. The contact arm 53 contacts the contact piece 454 and is also fixed to each other by spot welding.

[0052] When the electronic module 6 is inserted into the slot 11 and the card slot 131, the metal conductive contact 61 of the electronic module 6 and the spring contact 44 of the metal part 4 come into contact. The metal part 4 then comes into contact with the iron foot 5 through the top plate 411, the vertical piece 451 and the horizontal piece 452 of the covering piece 45, the extension piece 453 and the contact piece 454. The iron foot 5 is short-circuited to the ground layer of the circuit board 7. Thus, the static electricity of the electronic module 6 can be conducted to the iron foot 5 through the metal conductive contact 61 and the metal part 4, and grounded through the iron foot 5. At the same time, the solder foot 4521 of the metal part 4 is also electrically connected to the ground layer of the circuit board 7. When transmitting high-frequency signals, the problem of electromagnetic interference caused by static electricity can be effectively solved, and the signal transmission efficiency can be greatly improved. Example 2

[0053] like Figure 17-23 As shown, unlike Embodiment 1 above, the end of the extension piece 453 of the other covering piece 45 does not have a buckle 455 that bends upward and folds against the top surface of the mounting portion 14; no separate iron foot 5 is provided; and no welding foot 4521 is provided at the bottom of the horizontal piece 452. Instead of the iron foot 5, the end of the extension piece 453 of one of the covering pieces 45 bends upward through the top surface of the mounting portion 14 and then bends downward through the embedded groove to form a welding foot 457. The bottom ends of the insulating body 1 are welded to the circuit board 7 through the welding foot 457. By electrically connecting the metal part 4 to the ground layer of the circuit board 7 through the welding foot 457 of the metal part 4 itself, the electromagnetic interference problem caused by static electricity can be effectively solved when transmitting high-frequency signals, greatly improving the signal transmission efficiency. Example 3

[0054] like Figure 24-27As shown, unlike Embodiment 1 above, the end of the extension piece 453 of the other covering piece 45 does not have an upwardly bent tab 455 that bends over the top surface of the mounting portion 14; no separate iron foot 5 is provided; not only is a welding foot 4521 provided at the bottom of the horizontal piece 452, but also the end of the extension piece 453 of one of the covering pieces 45 bends upward over the top surface of the mounting portion 14 and then bends downward through the embedded groove to form a welding foot 457 instead of the iron foot 5. The bottom ends of the insulating body 1 are welded to the circuit board 7 through the welding feet 457 and 4521. By electrically connecting the metal part 4 to the ground layer of the circuit board 7 through the welding feet 4521 and 457 of the metal part 4 itself, the electromagnetic interference problem caused by static electricity can be effectively solved when transmitting high-frequency signals, greatly improving the signal transmission efficiency.

[0055] In addition, the solder foot 4521 is formed by first extending vertically downward from the bottom of the horizontal piece 452 of the covering sheet 45 and then bending horizontally towards the center line of the bottom length direction of the insulating body 1, and the solder foot 4521 is flatly attached to the surface of the circuit board 7.

[0056] The present invention also has other embodiments. In other embodiments, the spring 44 of the metal part 4 may be only one, or three, or more than three, and the number of metal conductive contacts 61 on the electronic module 6 is the same as that of the spring 44.

[0057] The present invention also has other embodiments, in which solder feet 4521 may be provided on only one transverse piece 452 of the covering sheet 45.

[0058] The present invention also has other embodiments. In other embodiments, the contact pieces 454 of both covering pieces 45 can be in contact with the iron foot 5, and the contact pieces 454 of both covering pieces 45 and the iron foot 5 can be fixed to each other by spot welding.

[0059] The present invention also has other embodiments. In other embodiments, a latch 3 can be provided only at one end of the tower portion 13, and a metal fastener can be provided at the other end of the tower portion 13, forming a single-sided latch structure. One side of the electronic module 6 is fastened by the latch 3, and the other side of the electronic module 6 is fastened by the metal fastener. Furthermore, a metal part 4 can be provided only on one side of the tower portion 13, and an iron foot 5 can be provided at the bottom of each of the two tower portions 13. The metal part 4 contacts the iron foot 5 near the metal part 4; or one side of the tower portion 13 has an iron foot 5 at the bottom, and the bottom of the other side of the tower portion 13 is a welding foot 457 of the metal part 4. The iron foot 5 and the metal part 4 do not contact each other and are only used to fix the insulating body 1 to the circuit board 7.

[0060] Alternatively, a metal part 4 can be provided on each of the two tower sections 13. The bottom of the tower section 13 with one metal part 4 has an iron foot 5 that contacts the metal part 4. The bottom of the tower section 13 with the other metal part 4 has a welding foot 457 of the metal part 4.

[0061] When the tower part 13 with the metal buckle is provided with the metal part 4, the metal part 4 can be integrally formed with the metal buckle, or the metal buckle can be set independently of the metal part 4.

[0062] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A reinforced double-layer terminal block connector with ESD protection, characterized in that, include: An insulating body has a longitudinally elongated slot recessed from top to bottom for inserting an electronic module. Multiple terminal slots are respectively provided in the longitudinally elongated sidewalls on both sides of the slot. A tower is provided at each end of the insulating body. The tower has a slot that communicates with the slot and is used to accommodate the end of the electronic module. Multiple terminals are respectively housed in corresponding terminal slots within the two longitudinal side walls. At least a portion of the terminal slots are equipped with double-layer terminals, while the remaining terminal slots are equipped with single-layer terminals. At least one ear clip is received in the receiving slot of the corresponding tower section and pivotally connected to the tower section; and At least one metal component is fitted onto the corresponding tower section to reinforce the tower section. The metal component extends into the slot with at least one spring piece that contacts the protruding metal conductive contact piece on the surface of the electronic module. The metal component covers the outer perimeter of the tower section. The metal component is electrically connected to the ground layer of the circuit board through an independent iron foot fixed to the bottom end of the insulating body or a welded foot integrally connected to the metal component.

2. The reinforced double-layer terminal block connector with ESD protection according to claim 1, characterized in that: The tower portion faces the slot from the inside and away from the slot from the outside. The tower portion includes a connecting wall located outside the slot and a limiting wall connected to both sides of the connecting wall and parallel to the length direction of the slot. The metal part includes a main body that is respectively fitted onto the limiting wall on both sides of the slot. The main bodies on both sides of the slot are connected by a connecting part passing through the top surface of the connecting wall. The opposite sides of the main bodies on both sides of the slot are provided with the spring piece that extends into the slot.

3. The reinforced double-layer terminal block connector with ESD protection according to claim 2, characterized in that: The opposite sides of the main body located on both sides of the card slot are each connected to a covering plate covering the surface of the tower. At least one covering plate connected to the main body is electrically connected to the ground layer of the circuit board through an independent iron foot or a welded foot integrally connected to the covering plate.

4. The reinforced double-layer terminal block connector with ESD protection according to claim 3, characterized in that: Each of the aforementioned covering pieces includes a vertical piece and a horizontal piece. A vertical piece and a horizontal piece of the covering piece are provided on the opposite side of the tower. The upper end of each vertical piece is connected to the main body, the lower end of each vertical piece is connected to one end of the horizontal piece, and the other end of the horizontal piece is bent toward the outer side of the tower to form an extension piece. The receiving groove penetrates the outer side of the tower and the bottom surface of the insulating body. The bottom of the insulating body has a mounting part on the outside of the receiving groove. The mounting part is provided with an embedding groove for the iron foot to be embedded and installed through the top and bottom of the mounting part. One of the extension pieces of the covering piece has a contact piece at its end that bends upward over the top surface of the mounting part and then bends downward into the embedding groove and extends out of the bottom of the embedding groove. The contact piece contacts the iron foot in the embedding groove. The other extension piece of the covering piece has a fastener at its end that bends upward and is folded over the top surface of the mounting part.

5. The reinforced double-layer terminal block connector with ESD protection according to claim 4, characterized in that: The iron foot includes a fixed body and a welding part extending downward from the lower end of the fixed body, and the upper end of the fixed body extends upward to form a contact arm that contacts the contact piece.

6. The reinforced double-layer terminal block connector with ESD protection according to claim 4, characterized in that: At least one of the cladding sheets has a solder pad extending downwards from the bottom of the cross section, and the solder pad is electrically connected to the ground plane of the circuit board.

7. The reinforced double-layer terminal block connector with ESD protection according to claim 6, characterized in that: The solder feet extend vertically downwards from the bottom of the horizontal strip of the cover sheet, and penetrate the circuit board vertically.

8. The reinforced double-layer terminal block connector with ESD protection according to claim 4, characterized in that: The ends of the two extension plates on the outer side of the tower are fixed to each other by spot welding, and the contact arm and the contact plate are fixed to each other by spot welding.

9. The reinforced double-layer terminal block connector with ESD protection according to claim 3, characterized in that: Each of the aforementioned covering pieces includes a vertical piece and a horizontal piece. A vertical piece and a horizontal piece of the covering piece are provided on the opposite side of the tower. The upper end of each vertical piece is connected to the main body, the lower end of each vertical piece is connected to one end of the horizontal piece, and the other end of the horizontal piece is bent toward the outer side of the tower to form an extension piece. The receiving groove penetrates the outer side of the tower and the bottom surface of the insulating body. The bottom of the insulating body has a mounting part on the outside of the receiving groove, and the mounting part is provided with an embedding groove penetrating the top and bottom surfaces of the mounting part. One of the extension pieces of the covering sheet is bent upwards over the top surface of the mounting part and then bent downwards through the embedding groove to form the welding foot.

10. The reinforced double-layer terminal block connector with ESD protection according to claim 9, characterized in that: At least one of the cladding sheets has a solder pad extending downwards from the bottom of the cross section, and the solder pad is electrically connected to the ground plane of the circuit board.

11. The reinforced double-layer terminal block connector with ESD protection according to claim 10, characterized in that: The solder feet are formed by first extending vertically downwards from the bottom of the horizontal strip of the covering sheet and then bending horizontally towards the center line of the bottom length direction of the insulating body, with the solder feet flat against the surface of the circuit board.

12. The reinforced double-layer terminal block connector with ESD protection according to claim 9, characterized in that: The ends of the two extension plates on the outer side of the tower are fixed to each other by spot welding.

13. The reinforced double-layer terminal block connector with ESD protection according to any one of claims 4 to 12, characterized in that: The bottom of each of the two vertical pieces of the covering sheet is bent toward the bottom surface of the insulating body to form a fastening part that fastens to the bottom of the two side walls of the receiving groove along the length of the insulating body.

14. The reinforced double-layer terminal block connector with ESD protection according to any one of claims 3 to 12, characterized in that: Each of the main bodies includes a top plate and a side plate. The top plate is located on the top surface of the limiting wall, and the side plate is located on the inner side of the limiting wall. The inner side of each top plate is connected to the upper end of the side plate, the outer sides of the two top plates are connected through the connecting part, and the opposite sides of the two side plates are connected to the spring piece. The opposite sides of the top plates of the two main bodies located on both sides of the card slot are connected to the corresponding covering pieces.

15. The reinforced double-layer terminal block connector with ESD protection according to claim 14, characterized in that: The opposing sides of the two side plates are bent outward to form a bent portion that extends into the slot. The upper side of the part of the bent portion that extends into the slot has a stop protruding from the inner wall of the slot. The lower side of the part of the bent portion that extends into the slot extends downward to form the spring piece. The spring piece is inclined and protrudes into the slot.

16. The reinforced double-layer terminal block connector with ESD protection according to claim 14, characterized in that: The outer side of the connecting part bends downward to form a fastening part located on the outer side of the connecting wall, and the outer surface of the connecting wall protrudes to form a protrusion that engages with the fastening part.

17. The reinforced double-layer terminal block connector with ESD protection according to claim 14, characterized in that: The top plates of the two main bodies are bent downwards on opposite sides to form guide parts that extend into the slot.

18. The reinforced double-layer terminal block connector with ESD protection according to claim 14, characterized in that: The bottom of each side plate extends downward to form a snap-in portion, and a snap-in groove is provided on the inner side of the limiting wall. The top and upper inner side of the snap-in groove are open, and the bottom of the snap-in groove is closed. The snap-in portion snaps into the snap-in groove.

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