High-speed signal electric connector

Abstract

The utility model provides a high-speed signal electric connector, which comprises an insulating body, the insulating body is provided with a lengthwise slot which is concavely arranged downwards from the top surface and is used for inserting an electronic element, long side walls at two sides of the lengthwise slot are provided with a plurality of terminal slots, and the terminal slots penetrate through the top surface of the insulating body; the plurality of grounding terminals and the plurality of signal terminals are respectively and correspondingly accommodated in the corresponding terminal grooves; the metal shell completely covers the top surfaces and the outer surfaces of the two long side walls, the parts, covering the top surfaces of the two long side walls, of the metal shell are provided with elastic arms extending into the terminal grooves for accommodating the grounding terminals, and the elastic arms are not propped against the corresponding grounding terminals when the electronic element is not inserted into the lengthwise slot; the elastic arms abut against the corresponding grounding terminals when the electronic component is inserted into the lengthwise slot. The high-speed signal electric connector can improve the shielding effect.

Description

Technical Field

[0001] The utility model belongs to the field of connectors, and in particular relates to a high-speed signal electrical connector. Background Art

[0002] The transmission rate of PCIe4.0 version is required to reach 16Gbps, the transmission rate of PCIe5.0 version is required to reach 32Gbps, and the transmission rate of PCIe 6.0 version is required to reach 64Gbps. Under such high transmission rate requirements, the shielding effect of the connector must be very good.

[0003] Chinese patent CN201720096766.3 discloses an electrical connector, which includes an insulating body, a plurality of terminals arranged on the insulating body for docking with a docking element, the plurality of terminals including a plurality of signal terminals and at least one grounding terminal, a pair of ear buckles arranged at both ends of the insulating body for buckling the docking element, a metal shell covering the insulating body, and a plurality of fixing parts arranged below the insulating body to fix the electrical connector on the circuit board.

[0004] The terminals include a plurality of grounding terminals and a plurality of signal terminals. Each grounding terminal includes a main body portion fixed in the terminal slot, and a contact portion is bent upward and extended from the main body portion. The contact portion protrudes into the slot for contacting the docking element, and the contact portion is bent upward and extended to form an abutment portion for contacting the metal shell.

[0005] The metal shell is formed by buckling two metal shells, each of which has a side plate, a top plate connected to the side plate, and two buckling plates connected to the side plate. The side plate is covered on the outer wall surface of the insulating body, and the top plate is covered on the top surface of the insulating body. At least one first grounding plate extends from the top surface of the top plate. The metal shell extends at least one second grounding plate from the side plate, and two adjacent second grounding plates are spaced apart by the spacing of two adjacent grounding terminals to avoid contact with the signal terminal. The first grounding plate, the second grounding plate and each grounding terminal are in contact at the same time on both sides of the upper and lower contact portions to form a grounding loop.

[0006] The first grounding piece and the second grounding piece are in contact with each grounding terminal at both sides of the contact portion, the first grounding piece is in contact with the contact portion, and the second grounding piece is in contact with the main body portion. The first grounding piece is bent downward from the top plate to extend a first elastic arm, and a second elastic arm is bent and extended from the first elastic arm, and the second elastic arm is in elastic contact with the contact portion. The second elastic arm does not contact with the contact portion when the docking element is not inserted, and the second elastic arm contacts with the grounding terminal when the docking element is inserted.

[0007] The metal shell of the above-mentioned electrical connector is formed by buckling two metal shells, and the two metal shells partially shield the top surfaces of the side walls on both sides of the slot of the insulating body, which is easy to affect the shielding effect. Therefore, it needs to be improved. Utility Model Content

[0008] The purpose of the utility model is to provide a high-speed signal electrical connector to solve the problems raised in the above background technology.

[0009] In order to achieve the above purpose, the technical solution used in this utility model is:

[0010] A high-speed signal electrical connector, including:

[0011] An insulating body, having a longitudinal slot recessed downward from the top surface for inserting an electronic component, and a plurality of terminal slots are arranged on the long side walls on both sides of the longitudinal slot, and the terminal slots penetrate the top surface of the insulating body;

[0012] A plurality of ground terminals and a plurality of signal terminals are respectively accommodated in corresponding terminal slots;

[0013] A metal shell completely covers the top surface and outer surface of the two long side walls. The part of the metal shell covering the top surface of the two long side walls has an elastic arm extending into the terminal groove for accommodating each grounding terminal. The elastic arm does not abut against the corresponding grounding terminal when the electronic component is not inserted into the longitudinal slot. The elastic arm abuts against the corresponding grounding terminal when the electronic component is inserted into the longitudinal slot.

[0014] Furthermore, the two ends of the longitudinal slot in the length direction are short side walls, and the parts of the metal shell covering the top surfaces of the two long side walls are connected at both ends by a metal connecting part, and each metal connecting part covers the top surface of the corresponding short side wall.

[0015] Furthermore, an anti-foolproofing portion connecting the two long side walls is provided in the longitudinal slot, and the metal shell covering the top surfaces of the two long side walls is connected at the anti-foolproofing portion through a second metal connecting portion, and the second metal connecting portion covers the top surface of the anti-foolproofing portion.

[0016] Furthermore, the part of the metal shell covering the top surface of the two long side walls is formed into an opening by stamping, and the elastic arm is connected to the side of the opening close to the longitudinal slot, and the side of each opening close to the longitudinal slot is connected to one or two elastic arms, and the opening extends downward to the part of the metal shell covering the outer surface of the two long side walls and forms an L-shaped opening structure.

[0017] Furthermore, the elastic arm includes a vertical portion, an inner oblique portion and an abutment portion, the upper end of the vertical portion is vertically connected to the side of the opening close to the longitudinal slot, the upper end of the inner oblique portion is away from the longitudinal slot and connected to the lower end of the vertical portion, and the lower end of the inner oblique portion is close to the longitudinal slot and bends downward and outward to form the abutment portion.

[0018] Furthermore, the grounding terminal has a main body portion fixed to the insulating body, a contact portion extending upward from the main body portion, and a welding portion extending downward from the main body portion, the contact portion protrudes into the longitudinal slot to contact the electronic component, the welding portion is exposed from the insulating body to be welded to a circuit board, the contact portion extends upward to form a pressing portion, and the abutting portion of the elastic arm abuts against the corresponding pressing portion when the electronic component is inserted into the slot.

[0019] Furthermore, the portion of the outer surface of the two long side walls covered by the metal shell is also bent toward each other at both ends of the insulating body to form end shielding sheets, and the end shielding sheets cover the outer surfaces of the short side walls. The two end shielding sheets at one end of the insulating body are abutted against each other, and the two end shielding sheets at the other end of the insulating body are engaged with each other.

[0020] Furthermore, the bottom edge of the portion of the outer surface of the two long side walls covered by the metal shell and the bottom edge of each end shielding sheet are bent toward the bottom of the insulating body to form a buckling portion, and each buckling portion is buckled on the bottom surface of the insulating body.

[0021] Furthermore, a shielding sheet is fixed to the bottom of the insulating body, and the shielding sheet includes a bottom sheet and two side sheets, both of which are in a hollow state. The bottom sheet is located on the bottom surface of the insulating body, and the two side sheets are embedded in the two long side walls from the bottom surfaces of the two long side walls. The bottom sheet connects the longitudinal bottom edges of the two side sheets, and the side sheets include an upper edge, a lower edge, and a side connecting sheet connecting the upper edge and the lower edge. There are absorbing sheets on the upper and lower edges, and there is also a grounding sheet on the lower edge, and each grounding sheet is abutted against the corresponding grounding terminal.

[0022] Furthermore, end connecting pieces are arranged at both ends of the bottom sheet in the longitudinal direction to connect the two side pieces, and the bottom sheet is provided with fixing holes corresponding to the fixing structure protruding in the middle of the bottom of the insulating body, and the buckling part on the bottom surface of one end of the insulating body is buckled on the bottom surface of the end connecting piece.

[0023] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in: by enabling the metal shell to completely cover the top surface and the outer surface of the two long side walls, the shielding effect can be improved and a good shielding effect can be ensured; the use of metal connecting part one, metal connecting part two, end shielding sheet and shielding sheet can further form a good shielding effect; the use of the buckling part can firmly fix the metal shell on the insulating body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the high-speed signal electrical connector of the utility model combined with the electronic component and the circuit board;

[0025] Figure 2 is a three-dimensional diagram of a high-speed signal electrical connector;

[0026] Figure 3 A three-dimensional diagram of a high-speed signal electrical connector from another angle;

[0027] Figure 4 It is a three-dimensional exploded view of a high-speed signal electrical connector;

[0028] Figure 5 for Figure 2 Schematic diagram after the metal shell is removed;

[0029] Figure 6 is a three-dimensional diagram of an insulating body;

[0030] Figure 7 is a three-dimensional diagram of a metal terminal;

[0031] Figure 8 is a three-dimensional diagram of a metal shell;

[0032] Fig. 9 It is a three-dimensional image of the metal shell from another angle;

[0033] Fig.10 is a cross-sectional view of a metal shell;

[0034] Fig.11 is a cross-sectional view of a high-speed signal electrical connector;

[0035] Fig.12 A three-dimensional diagram of the shielding sheet. DETAILED DESCRIPTION

[0036] In order to facilitate a better understanding of the purpose, structure, characteristics and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0037] like Figure 1-12 As shown, the high-speed signal electrical connector comprises an insulating body 1 , a plurality of metal terminals 2 fixed in the insulating body 1 , a metal shell 3 covering the insulating body, and a shielding sheet 4 mounted on the insulating body 1 .

[0038] The middle part of the top surface of the insulating body 1 is concave in the longitudinal direction to form a longitudinal slot 11. On both sides of the longitudinal slot 11, there are long side walls 12 arranged along the length direction of the longitudinal slot 11, and the two ends of the longitudinal slot 11 are short side walls 13. The long side walls 12 on both sides of the longitudinal slot 11 are provided with a plurality of terminal slots 14, and the terminal slots 14 pass through the top and bottom surfaces of the insulating body 1. An anti-idiot portion 15 connecting the two long side walls 12 is provided in the longitudinal slot 11. The anti-idiot portion 15 divides the longitudinal slot 11 into a long slot and a short slot. The anti-idiot portion 15 is used to prevent the electronic component 100 from being reversely inserted. A fixed structure 16 is protruded in the middle of the bottom of the insulating body 1 and is spaced along the longitudinal direction of the insulating body 1.

[0039] The metal terminals 2 include a plurality of ground terminals and a plurality of signal terminals. The structure of the signal terminals is the same as that of the ground terminals, and they are respectively accommodated in the corresponding terminal slots 14. Each metal terminal 2 includes a contact portion 21, an elastic portion 22, a main body portion 23 and a soldering portion 24 connected in sequence from top to bottom. The contact portion 21 protrudes into the longitudinal slot 11 to contact the electronic component 100. The upper end of the contact portion 21 is connected to the pressing portion 26 through the guide portion 25, and the lower end of the main body portion 23 is connected to the soldering portion 24 through the extension portion 27. The main body portion 23 is fixed in the terminal slot 14 of the insulating body 1, and the soldering portion 24 is exposed at the bottom of the insulating body 1 to be soldered on a circuit board 200.

[0040] The metal shell 3 includes a side shielding sheet 31, an end shielding sheet 32 ​​and a top shielding sheet 33. There are two side shielding sheets 31, and the two side shielding sheets 31 completely cover the outer surface of the two long side walls 12. The two ends of each side shielding sheet 31 in the length direction are bent vertically toward the same side to form the end shielding sheet 32. The end shielding sheets 32 at the two ends of the two side shielding sheets 31 are bent toward each other. The end shielding sheets 32 at the two ends of the two side shielding sheets 31 completely cover the outer surface of the short side wall 13. The two end shielding sheets 32 at one end of the insulating body 1 are close to each other, and the two end shielding sheets 32 at the other end of the insulating body 1 are engaged with each other. The top edges of the two side shielding sheets 31 are also bent vertically toward each other to form a top shielding sheet 33. The two top shielding sheets 33 completely cover the top surfaces of the two long side walls 12. The side shielding sheets 31, the end shielding sheets 32 and the top shielding sheets 33 can shield the two side surfaces, the two end surfaces and the top surface of the insulating body, and form a good shielding effect.

[0041] The two top shielding sheets 33 are connected at both ends by metal connecting parts 1 34, and each metal connecting part 1 34 covers the top surface of the corresponding short side wall 13. The two top shielding sheets 33 are connected at the position of the foolproof part 15 by metal connecting parts 2 35, and metal connecting parts 2 35 cover the top surface of the foolproof part 15. Through the metal connecting parts 1 34 and 2 35, a good shielding effect can be further formed.

[0042] The two top shielding plates 33 have elastic arms 36 extending into the terminal slots 14 accommodating the grounding terminals. The elastic arms 36 do not abut against the corresponding grounding terminals when the electronic component 100 is not inserted into the longitudinal slot 11. The elastic arms 36 abut against the corresponding grounding terminals when the electronic component 100 is inserted into the longitudinal slot 11.

[0043] An opening 37 is formed on the top shielding sheet 33 by stamping, and an elastic arm 36 is connected to the side of the opening 37 on the side of the longitudinal slot 11. Each opening 37 on the side of the longitudinal slot 11 is connected to one or two elastic arms 36. The opening 37 extends downward to the side shielding sheet 31 and forms an L-shaped opening structure.

[0044] The elastic arm 36 includes a vertical portion 361, an inner oblique portion 362 and an abutting portion 363. The upper end of the vertical portion 361 is vertically connected to the side of the opening 37 near the longitudinal slot 11. The upper end of the inner oblique portion 362 is away from the longitudinal slot 11 and connected to the lower end of the vertical portion 361. The lower end of the inner oblique portion 362 is close to the longitudinal slot 11 and is bent downward and outward to form the abutting portion 363. When the electronic component 100 is inserted into the longitudinal slot, the abutting portion 363 of the elastic arm 36 abuts against the corresponding pressing portion 26. The inner oblique portion 362 is used to ensure the elasticity of the elastic arm 36.

[0045] The bottom edges of the two side shielding plates 31 of the metal shell 3 and the bottom edges of each end shielding plate 32 are bent toward the bottom of the insulating body 1 to form a retaining portion 38, and each retaining portion 38 is retaining on the bottom surface of the insulating body 1 so that the metal shell 3 is firmly wrapped around the outer periphery of the insulating body 1.

[0046] The shielding sheet 4 is fixed to the bottom of the insulating body 1. The shielding sheet 4 includes a bottom sheet 41 and two side sheets 42, both of which are in a hollow state. The bottom sheet 41 is located on the bottom surface of the insulating body 1. The two side sheets 42 are embedded in the two long side walls 12 from the bottom surfaces of the two long side walls 12. The bottom sheet 41 connects the longitudinal bottom edges of the two side sheets 42. The side sheets 42 include an upper edge 421, a lower edge 422 and a side connecting sheet 423 connecting the upper edge 421 and the lower edge 422. The upper edge 421 and the lower edge 422 both have absorbing sheets 424. The lower edge 422 also has a grounding sheet 425. Each grounding sheet 425 is abutted against a corresponding grounding terminal. The two ends of the bottom sheet 41 in the longitudinal direction are provided with end connecting sheets 43 to connect the two side sheets 42, one of the end connecting sheets 43 is located at one end of the bottom surface of the insulating body 1, and the other end connecting sheet 43 is located at the position of the bottom surface of the insulating body 1 corresponding to the foolproof portion 15, and the bottom sheet 41 is provided with a fixing hole 44 corresponding to the fixing structure 16 protruding in the middle of the bottom of the insulating body 4, and the buckling portion 38 on the bottom surface of one end of the insulating body 1 is buckled on the bottom surface of the end connecting sheet 43. Through the arrangement of the shielding sheet 4, a good shielding effect is further formed.

[0047] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in: by enabling the metal shell 3 to completely cover the top surface and the outer surface of the two long side walls 12, the shielding effect can be improved and a good shielding effect can be ensured; the metal connecting part 1 34, the metal connecting part 2 35, the end shielding sheet 32, and the shielding sheet 4 are adopted to further form a good shielding effect; the buckling part 38 is adopted to firmly fix the metal shell 3 on the insulating body 1; under the premise that the abutting part 363 abuts the pressing part 26, the metal shell 3 also covers the insulating body as a whole, which can not only reduce the interference between the internal terminals, but also reduce the interference of the external signal to the internal signal, and effectively improve the EMI effect.

[0048] In other embodiments, the metal shell completely covers only the top surfaces and outer surfaces of the two long side walls.

[0049] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A high-speed signal electrical connector, characterized in that: include: An insulating body, having a longitudinal slot recessed downward from the top surface for inserting an electronic component, and a plurality of terminal slots are arranged on the long side walls on both sides of the longitudinal slot, and the terminal slots penetrate the top surface of the insulating body; A plurality of ground terminals and a plurality of signal terminals are respectively accommodated in corresponding terminal slots; A metal shell completely covers the top surface and outer surface of the two long side walls. The part of the metal shell covering the top surface of the two long side walls has an elastic arm extending into the terminal groove for accommodating each grounding terminal. The elastic arm does not abut against the corresponding grounding terminal when the electronic component is not inserted into the longitudinal slot. The elastic arm abuts against the corresponding grounding terminal when the electronic component is inserted into the longitudinal slot.

2. The high-speed signal electrical connector according to claim 1, characterized in that: The two ends of the longitudinal slot in the length direction are short side walls, and the parts of the metal shell covering the top surfaces of the two long side walls are connected at both ends through a metal connecting part, and each metal connecting part covers the top surface of the corresponding short side wall.

3. The high-speed signal electrical connector according to claim 1 or 2, characterized in that: The longitudinal slot is provided with an anti-foolproofing portion connecting the two long side walls, and the metal shell covering the top surfaces of the two long side walls is connected at the anti-foolproofing portion through a second metal connecting portion, and the second metal connecting portion covers the top surface of the anti-foolproofing portion.

4. The high-speed signal electrical connector according to claim 1, 2 or 3, characterized in that: The part of the metal shell covering the top surface of the two long side walls is formed into an opening by stamping, and the elastic arm is connected to the side of the opening close to the longitudinal slot. The side of each opening close to the longitudinal slot is connected to one or two elastic arms, and the opening extends downward to the part of the metal shell covering the outer surface of the two long side walls and forms an L-shaped opening structure.

5. The high-speed signal electrical connector according to claim 4, characterized in that: The elastic arm includes a vertical portion, an inner oblique portion and an abutment portion, the upper end of the vertical portion is perpendicularly connected to the side of the opening near the longitudinal slot, the upper end of the inner oblique portion is away from the longitudinal slot and connected to the lower end of the vertical portion, and the lower end of the inner oblique portion is close to the longitudinal slot and bends downward and outward to form the abutment portion.

6. The high-speed signal electrical connector according to claim 5, characterized in that: The grounding terminal comprises a main body portion fixed to an insulating body, a contact portion extending upward from the main body portion, and a welding portion extending downward from the main body portion, wherein the contact portion protrudes into the longitudinal slot to contact the electronic component, the welding portion is exposed from the insulating body to be welded to a circuit board, and the contact portion extends upward to form a pressing portion, and the abutting portion of the elastic arm abuts against the corresponding pressing portion when the electronic component is inserted into the slot.

7. The high-speed signal electrical connector according to claim 2, characterized in that: The metal shell covers the outer surface of the two long side walls and is bent toward each other at both ends of the insulating body to form end shielding plates, which cover the outer surface of the short side walls. The two end shielding plates at one end of the insulating body are abutted against each other, and the two end shielding plates at the other end of the insulating body are engaged with each other.

8. The high-speed signal electrical connector according to claim 7, characterized in that: The bottom edge of the portion of the outer surface of the two long side walls covered by the metal shell and the bottom edge of each end shielding sheet are bent toward the bottom of the insulating body to form a buckling portion, and each buckling portion is buckled on the bottom surface of the insulating body.

9. The high-speed signal electrical connector according to claim 8, characterized in that: A shielding sheet is also fixed to the bottom of the insulating body, and the shielding sheet includes a bottom sheet and two side sheets, both of which are in a hollow state. The bottom sheet is located on the bottom surface of the insulating body, and the two side sheets are embedded in the two long side walls from the bottom surfaces of the two long side walls. The bottom sheet connects the longitudinal bottom edges of the two side sheets, and the side sheets include an upper edge, a lower edge, and a side connecting sheet connecting the upper edge and the lower edge. There are absorbing sheets on the upper edge and the lower edge, and there is also a grounding sheet on the lower edge, and each grounding sheet is abutted against the corresponding grounding terminal.

10. The high-speed signal electrical connector according to claim 9, characterized in that: The two ends of the bottom film in the longitudinal direction are provided with end connecting pieces to connect the two side pieces. The bottom film is provided with fixing holes corresponding to the fixing structure protruding in the middle of the bottom of the insulating body. The buckling part on the bottom surface of one end of the insulating body is buckled on the bottom surface of the end connecting piece.

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