CN114243329A - Electrical connector - Google Patents
Electrical connector Download PDFInfo
- Publication number
- CN114243329A CN114243329A CN202111328100.3A CN202111328100A CN114243329A CN 114243329 A CN114243329 A CN 114243329A CN 202111328100 A CN202111328100 A CN 202111328100A CN 114243329 A CN114243329 A CN 114243329A
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- China
- Prior art keywords
- clamping
- connecting portion
- grounding
- fixing
- insulating body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
- H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding with earth pin, blade or socket
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The invention discloses an electric connector, which is used for electrically connecting a first butt joint element to a second butt joint element and comprises: the insulating body is provided with at least one accommodating groove; at least one grounding terminal is fixedly arranged in the containing groove and provided with a base part, a contact part extends from one end of the base part, a connecting part extends from the other end of the base part, and a fixing part extends from the side direction of the base part and is fixedly held in the containing groove; the grounding piece is fixedly arranged in the accommodating groove and provided with a connecting beam, the connecting beam and the fixing part are positioned on the same side of the base part and are accommodated in the accommodating groove, at least one clamping part extends from one side of the connecting beam, the clamping part is clamped at the position, close to the fixing part, of the base part, so that the grounding terminal is fixed, the crosstalk problem is solved, a buffer space is arranged between the position, close to the clamping part, of the connecting part and the insulating body, air is arranged in the buffer space, and the insulating body is supported in a butting mode at the position, close to the second butting element, of the connecting part, so that the flatness of the connecting part is kept.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to an electrical connector, and more particularly, to an electrical connector with a card edge.
[ background of the invention ]
Chinese patent No. 202010884643.2 discloses a card edge electrical connector, which includes an insulating body, a row of second terminals, a row of first terminals and a grounding member, wherein the insulating body includes a front end face and a rear end face which are opposite to each other, and a slot which runs through the front end face, the first and second terminals include a connecting portion, an elastic portion and a pin which extend from the connecting portion to the slot, the elastic portion has a contact portion which protrudes into the slot, the connecting portion of the first terminal extends out of a first fixing portion, and the first fixing portion is inserted into the insulating body from the rear end face; the connecting portion has two opposite side surfaces facing the adjacent terminals, respectively, one row of the first terminals includes signal terminals and ground terminals, and the ground member has elastic arms pressed against the side surfaces of the connecting portion, and the electrical connector has the following problems:
(1) although the elastic arms of the grounding member can firmly press against two opposite sides of the amplifying portion of the grounding terminal to improve the high-frequency performance of the card edge connector, the grounding terminal needs to protrude the amplifying portion forward from the connecting portion, which increases the signal loss and is not favorable for the high-frequency performance.
(2) The elastic arm and the flat plate part of the grounding part are positioned on the same side of the connecting beam of the grounding part, so that the difference of the bearing force difference of the two opposite sides of the connecting beam is greatly different, the stability of the grounding part is not facilitated, the grounding part is exposed on the rear end face of the insulating body, and the grounding part is easy to withdraw from the insulating body.
(3) The grounding piece is clamped in the amplifying part, the distance from the amplifying part to the elastic part is greater than the distance from the amplifying part to the pin, so that the difference between the bearing force and the distance between the two opposite sides of the amplifying part is greatly different, the grounding terminal is easy to incline, and the stable pressing between the grounding terminal and the grounding piece is not facilitated.
Therefore, there is a need for an improved electrical connector that overcomes the above problems.
[ summary of the invention ]
In view of the problems encountered in the background art, an object of the present invention is to provide an electrical connector, in which a grounding member is disposed between an insulating body and a grounding terminal, so that the grounding member is not easy to exit from the insulating body, the grounding member is clamped at a substantially central position of the length of the grounding terminal, and the insulating body is supported in a position where a connecting portion of the grounding terminal is close to a mating element in a butting manner, so that the grounding terminal is stably positioned by the insulating body and the grounding member, and the amplitude is reduced by half, thereby realizing a high frequency.
In order to achieve the purpose, the invention adopts the following technical means:
an electrical connector for electrically connecting a first mating component to a second mating component, comprising: the insulation body is provided with at least one accommodating groove; at least one grounding terminal is fixedly arranged in the containing groove and provided with a base part, a contact part extends from one end of the base part and is used for being electrically connected with the first butt-joint element, a connecting part extends from the other end of the base part and is used for being electrically connected with the second butt-joint element, and a fixing part extends from the side direction of the base part and is fixedly held in the containing groove; the grounding piece is fixedly arranged in the accommodating groove and provided with a connecting beam, the connecting beam and the fixing part are positioned on the same side of the base part and are accommodated in the accommodating groove, at least one clamping part extends from one side of the connecting beam, the clamping part is clamped at the position, close to the fixing part, of the base part, a buffer space is arranged between the position, close to the clamping part, of the connecting part and the insulating body, air is arranged in the buffer space, and the insulating body is supported in a butting mode at the position, close to the second butting element, of the connecting part.
Furthermore, the insulation body is provided with a first inclined plane and a second inclined plane at the positions of two opposite sides of the clamping part respectively, a gap is formed between the clamping part and the first inclined plane, and a gap is formed between the clamping part and the second inclined plane.
Further, the connecting portion includes a first connecting portion connected to the base, a second connecting portion extending from the first connecting portion toward a direction close to the second docking element and abutting against the insulating body, a third connecting portion extending from the second connecting portion toward a direction close to the second docking element, and a fourth connecting portion extending from the third connecting portion toward the second docking element and electrically contacting with the second docking element, the second connecting portion abuts against the insulating body, a gap is formed between the first connecting portion and the insulating body, and a gap is formed between the third connecting portion and the insulating body.
Furthermore, the lengths of the first connecting portion and the third connecting portion are substantially equal, the length of the second connecting portion is smaller than that of the first connecting portion, and the fourth connecting portion is bent and extended relative to the third connecting portion.
The insulating body is provided with a front end and a rear end which are opposite to each other, and a clamping groove which penetrates through the front end and the rear end, the contact part of the grounding terminal and the contact part of the signal terminal are exposed out of the clamping groove, the first butt-joint element is inserted into the clamping groove from the direction of the front end and abuts against the contact part of the grounding terminal and the contact part of the signal terminal, the grounding piece is inserted into the accommodating groove from the rear end and is fixed in the accommodating groove, and the first terminals are inserted into the accommodating groove from the rear end and are fixed in the accommodating groove.
Furthermore, a protruding spike is arranged on one side of the fixing portion close to the first butting element, the protruding spike abuts against the inner wall of the accommodating groove, the grounding piece is located on one side far away from the protruding spike, and the length of the grounding piece along the insertion direction of the grounding terminal is greater than or equal to the length of the fixing portion along the insertion direction.
Further, the base portion is vertically arranged, a material breaking portion extends from the base portion to a direction opposite to the insertion direction of the grounding terminal, the material breaking portion is exposed outside the insulating body, the material breaking portion is connected with the base portion, and at least part of the material breaking portion is located between the fixing portion and the clamping portion.
Furthermore, at least one protruding part extends from one side of the connecting beam, the protruding part is located between the clamping parts, at least one signal terminal is arranged between every two adjacent clamping parts, and the protruding part is close to the signal terminal relative to the connecting beam.
Further, the clamping part is provided with a first clamping part and a second clamping part which are arranged oppositely, the base part is clamped between the first clamping part and the second clamping part, a reinforcing part is connected with the connecting beam and located between the first clamping part and the second clamping part, and the reinforcing part covers at least part of the fixing part along the direction parallel to the fixing part.
Furthermore, at least two fixing parts extend from the other side of the connecting beam, at least one fixing part is fixed in the containing groove in an interference mode, the other fixing part is loosely matched with the containing groove, and the fixing parts exceed the fixing parts along the inserting direction of the fixing parts.
Compared with the prior art, the invention has the following beneficial effects: in the electrical connector of the invention, the connecting beam and the fixing portion are located on the same side of the base portion and are accommodated in the accommodating groove, that is, the grounding member is arranged between the insulating body and the grounding terminal and is arranged on the outermost side of the insulating body relative to the grounding member, the grounding member is not easy to withdraw from the insulating body, the clamping portion is clamped on the base portion, the grounding member and the grounding terminal are not in clamping contact, but in a butt contact manner, the contact position between the grounding member and the grounding terminal is not easy to tilt, the contact stability between the grounding member and the grounding terminal is ensured, the insulating body is supported on the connecting portion of the grounding terminal in a butt manner, so that the grounding terminal is stably positioned by virtue of the insulating body and the grounding member, and relative to the situation that the connecting portion is completely exposed in the air, the connecting part is abutted to the insulating body to reduce impedance, in order to ensure the flatness of the connecting part, the connecting part of the grounding terminal is abutted to the insulating body only at the position close to the second butt joint element, a buffer space is arranged between the position of the connecting part close to the clamping part and the insulating body, and air is arranged in the buffer space, so that the condition that the flatness of the connecting part cannot be ensured due to the existence of manufacturing tolerance compared with the condition that the connecting part is totally abutted to the insulating body can be prevented, the stable contact between the grounding terminal and the second butt joint element is ensured, and the grounding terminal can shake because the clamping position is arranged in the buffer space, so that the clamping part is clamped at the position of the base part close to the fixing part, namely the grounding piece is approximately clamped at the central position of the length of the grounding terminal, the grounding piece and the grounding terminal are mutually fixed, so that the grounding piece and the grounding terminal are favorably fixed, the amplitude of the grounding piece is halved by clamping the grounding piece and the grounding terminal at the approximate central position, the interference strength between channels is reduced, the crosstalk problem of the electric connector is solved, and the high-frequency performance of the electric connector is favorably improved.
[ description of the drawings ]
Fig. 1 is a perspective view of an electrical connector of the present invention;
FIG. 2 is a perspective view of FIG. 1 from another perspective;
FIG. 3 is an exploded view of the electrical connector of the present invention;
fig. 4 is a front view of the electrical connector of the present invention;
fig. 5 is a cross-sectional view of the electrical connector of fig. 4 taken along line a-a;
fig. 6 is a cross-sectional view of the electrical connector of fig. 4 taken along line B-B;
fig. 7 is a schematic view of the first and second mating elements electrically contacting the electrical connector of the present invention;
detailed description of the embodiments reference is made to the accompanying drawings in which:
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[ detailed description ] embodiments
For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.
As shown in fig. 1, 2 and 3, the electrical connector 100 of the present invention defines a vertical direction (vertical direction) and a horizontal direction (arrangement direction of the first terminals 2) (in other embodiments, the vertical direction and the horizontal direction may be interchanged with each other).
As shown in fig. 1 to 7, the electrical connector 100 of the present invention is an electrical connector 100, the electrical connector 100 is used to electrically connect a first mating component 200 to a second mating component 300, the first mating component 200 is an electronic card, the second mating component 300 is a circuit board, the electrical connector 100 includes an insulating body 1, a grounding member 4 fixed to the insulating body 1, a row of first terminals 2, and a row of second terminals 3.
As shown in fig. 2, 3, 5 and 7, the insulating housing 1 is provided with a plurality of accommodating grooves 14; the first terminal 2, the second terminal 3 and the grounding member 4 are fixedly arranged in the receiving slot 14, the insulating body 1 has a front end 11 and a rear end 13 which are opposite to each other, and a slot 12 which penetrates through the front end 11 and the rear end 13, the slot 12 is used for the electronic card to be inserted from the front end 11, a step portion 15 extends from the rear end 13 to the direction far away from the front end 11 at the bottom of the insulating body 1, the first terminal 2 is partially abutted against the step portion 15, the step portion 15 is beneficial to supporting and fixing the first terminal 2, a first inclined surface 16 and a second inclined surface 17 are respectively arranged at positions close to two opposite sides of the grounding member 4 of the insulating body 1, gaps are respectively arranged between the grounding member 4 and the first inclined surface 16 and between the grounding member 4 and the second inclined surface 17, and a first guide surface 18 is respectively arranged at positions close to two opposite sides of the first terminal 2 of the insulating body 1 And a second guide surface 19, and gaps are provided between the first terminal 2 and the first guide surface 18 and between the first terminal 2 and the second guide surface 19.
As shown in fig. 1, 2, 3 and 6, the first terminals 2 are inserted from the rear end 13 and fixedly installed in the receiving cavities 14, and are arranged in rows at the rear end 13, the second terminals 3 are inserted from the front end 11 and fixedly installed in the receiving cavities 14, and are arranged in rows at the front end 11, the first terminals 2 and the second terminals 3 are both formed by blanking, the manufacturing is simple and fast, the first terminals 2 include a plurality of signal terminals 22 and a plurality of ground terminals 21, two signal terminals 22 are installed between every two ground terminals 21, each ground terminal 21 has a base portion 211, the base portions 211 are vertically arranged, a material breaking portion 215 extends from the base portion 211 in a direction opposite to the inserting direction of the ground terminals 21, the material breaking portion 215 is connected to the base portion 211, because the material breaking portion 215 is connected to the vertically arranged base portion 211, and at least part of the material breaking portion 215 is located between the fixing portion 212 and the grounding member 4, so that a greater force can be provided for quick assembly when assembling the grounding terminal 21, the material breaking portion 215 is exposed outside the insulating body 1, which is convenient for giving way to a mechanism for inserting the grounding terminal 21 by an automatic machine, which is convenient for riveting the grounding terminal 21, a contact portion 213 extends from one end of the base portion 211, the contact portion 213 of the grounding terminal 21, the contact portion of the signal terminal 22 and the contact portion of the second terminal 3 are exposed in the card slot 12, the contact portion 213 of the grounding terminal 21 and the contact portion of the signal terminal 22 are located above the contact portion of the second terminal 3, the electronic card is inserted into the card slot 12 from the direction of the front end 11 and abuts against the contact portion 213 of the grounding terminal 21, the contact portion of the signal terminal 22 and the contact portion of the second terminal 3, the ground terminal 21, the signal terminal 22, the second terminal 3 and the electronic card are electrically connected, a connecting portion 214 extends from the other end of the base portion 211 to electrically connect the circuit board, and the connecting portion 214 extends obliquely from the base portion 211 to the circuit board, so that compared with the case that the connecting portion 214 extends vertically from the base portion 211 to approach the circuit board and then extends obliquely, a transmission path is shortened, loss is reduced, and high-frequency performance is facilitated.
The connecting portion 214 includes a first connecting portion 2141 connected to the base portion 211, a second connecting portion 2142 extending from the first connecting portion 2141 toward the circuit board and abutting against the step portion 15, a third connecting portion 2143 extending from the second connecting portion 2142 toward the circuit board, and a fourth connecting portion 2144 extending from the third connecting portion 2143 toward the second mating member 300 and electrically contacting with the circuit board, the second connecting portion 2142 abutting against the step portion 15, the step portion 15 providing a supporting function for the second connecting portion 2142 to prevent the ground terminal 21 from shaking, and the second connecting portion 2142 abutting against the insulating body 1 to reduce impedance relative to exposure to air, a gap is provided between the first connecting portion 2141 and the insulating body 1, and a buffer space is provided between a position of the first connecting portion 2141 near the clamping portion 43 and the insulating body 1, the buffer space has air therein, a gap is also formed between the third connecting portion 2143 and the insulating body 1, and the length of the second connecting portion 2142 is smaller than that of the first connecting portion 2141, so that the flatness of the connecting portions cannot be guaranteed due to the existence of manufacturing tolerance when all the connecting portions are abutted against the insulating body 1, the lengths of the first connecting portion 2141 and the third connecting portion 2143 are substantially equal, that is, the middle position of the suspended section of the connecting portion 214 is abutted against the insulating body 1, and the supporting effect is better when the supporting position is not the middle position, and the fourth connecting portion 2144 is bent and extended relative to the third connecting portion 2143 and electrically contacts with the circuit board.
A fixing portion 212 extending from a side of the base portion 211 is fixed in the receiving slot 14, the first guiding surface 18 and the second guiding surface 19 are respectively disposed on two opposite sides of the fixing portion 212, and a gap is formed between the first guiding surface 18 and the second guiding surface 19 and between the fixing portion 212 and the fixing portion 212, when the fixing portion 212 is inserted into the receiving slot 14 from the rear end 13, the gap between the fixing portion 212 and the first guiding surface 18 and between the fixing portion 212 and the second guiding surface 19 reduces frictional resistance between the fixing portion 212 and the insulating body 1, so as to facilitate assembly of the ground terminal 21, the first guiding surface 18 and the second guiding surface 19 have guiding function on the ground terminal 21, the ground terminal 21 is accurately positioned and quickly assembled, a protrusion 2121 is disposed on one side of the fixing portion 212 close to the electronic card, the protrusion 2121 abuts against the inner wall of the receiving cavity 14, and for the case that there are protrusions 2121 on both sides, the resistance of the grounding terminal 21 is small when assembling, the grounding piece 4 is located on the side away from the protrusion 2121, after the electronic card is inserted, the fixing portion 212 has a side with the protrusion 2121 receiving a larger force than the fixing portion 212 without the protrusion 2121, the protrusion 2121 is located on the side close to the electronic card, and for the case that the protrusion 2121 is located on the side away from the electronic card, the effect of preventing the grounding terminal 21 from sliding backwards out of the receiving cavity 14 is better, the length of the grounding piece 4 along the inserting direction of the grounding terminal 21 is greater than or equal to the length of the fixing portion 212 along the inserting direction, the longer the fixing portion 212, the more the loss is more, the higher the loss is not beneficial to the electrical connector 100 to realize high frequency, so the fixing portion 212 can be designed to be relatively shorter, in order to reduce the loss, the design of the fixing portion 212 is short, which may cause unstable fixing of the ground terminal 21, so that the ground terminal 21 is fixed to the insulating body 1 by the ground piece 4, and the length of the ground piece 4 along the insertion direction of the ground terminal 21 is greater than or equal to the length of the fixing portion 212 along the insertion direction, which is better than the fixing portion 212.
As shown in fig. 1, 5 and 6, the grounding member 4 is formed by blanking, the grounding member 4 is easily manufactured, the grounding member 4 is inserted into the receiving slot 14 from the rear end 13 and fixed to the receiving slot 14, the grounding member 4 has a connecting beam 41, the connecting beam 41 and the fixing portion 212 are located on the same side of the base portion 211 and received in the receiving slot 14, the grounding member 4 is disposed between the insulation body 1 and the grounding terminal 21 and located on the outermost side of the insulation body 1 relative to the grounding member 4, the grounding member 4 is not easy to withdraw from the insulation body 1, a plurality of clamping portions 43 extend from one side of the connecting beam 41, the clamping portions 43 are clamped at the position where the base portion 211 is close to the fixing portion 212, the direction of the clamping portions 43 at the rear end 13 exceeds the fixing portion 212, which is favorable for guiding the base portion 211 to be inserted into the clamping portions 43, which is beneficial to the accurate positioning and quick installation of the grounding terminal 21, the grounding piece 4 is vertically clamped on the base part 211, a gap is formed between the base 211 and the second inclined surface 17, the ground terminal 21 is easily shaken, the ground piece 4 clamps the base 211, the ground piece 4 and the ground terminal 21 are thus fixed to each other, and therefore the ground member 4 is held substantially at the center of the length of the ground terminal 21, according to the definition of the boundary conditions, at both ends of the line, where the energy is zero, at the half-wavelength resonance point, the maximum electromotive force (electromagnetic field) will occur at the center along the length of the first terminal 2, the grounding member 4 is clamped at the position approximately in the middle of the first terminal 2, so that the amplitude can be reduced by half, the interference strength between channels is reduced, the crosstalk problem of the electrical connector 100 is solved, and the high-frequency performance of the electrical connector 100 is improved.
At least part of the material breaking portion 215 is located between the fixing portion 212 and the clamping portion 43, because when the ground terminal 21 is assembled into the insulating body 1, the ground terminal 21 is subjected to resistance at a position clamped by the fixing portion 212 and the grounding member 4, and at least part of the material breaking portion 215 is located between the fixing portion 212 and the clamping portion 43, which can provide a larger force when the ground terminal 21 is assembled, compared with a manner that the grounding member 4 is not in clamping contact with the ground terminal 21 but in abutting contact with the ground terminal 21, a place where the grounding member 4 is in contact with the ground terminal 21 is not tilted easily, which ensures stable contact between the grounding member 4 and the ground terminal 21, a gap is provided between the clamping portion 43 and the first inclined surface 16, and a gap is provided between the clamping portion 43 and the second inclined surface 17, the gap enables the grounding member 4 to have a space along the vertical and horizontal directions and to generate elastic deformation, so as to ensure stable contact between the grounding member 4 and the grounding terminal 21, and the first inclined surface 16 and the second inclined surface 17 have a guiding function on the grounding member 4, so that the grounding member 4 is quickly positioned and accurately mounted in the receiving slot 14, the clamping portion 43 exceeds the base portion 211 towards the rear end 13, so as to facilitate quick positioning on the clamping portion 43 when the grounding terminal 21 is assembled, a plurality of protruding portions 45 extend from one side of the connecting beam 41, the protruding portions 45 are positioned between two adjacent clamping portions 43, the protruding portions 45 are close to the signal terminals 22 relative to the connecting beam 41, and the protruding portions 45 can shield interference generated when the signal terminals 22 are butted with the electronic card and the circuit board, so as to reduce crosstalk interference, the clamping portion 43 has a first clamping portion 431 and a second clamping portion 432 disposed opposite to each other, the base portion 211 is clamped between the first clamping portion 431 and the second clamping portion 432, a reinforcing portion 44 is connected to the connecting beam 41 and located between the first clamping portion 431 and the second clamping portion 432, the reinforcing portion 44 is closer to the base portion 211 than the connecting beam 41, a transmission path from the clamping portion 43 to a grounding position of the grounding member 4 is reduced, and the reinforcing portion 44 covers at least a portion of the fixing portion 212 in a direction parallel to the fixing portion 212, which is beneficial to reducing crosstalk amplitude and realizing high-frequency performance of the electrical connector 100.
A plurality of holding portions 42 extend from the other side of the connecting beam 41, a part of the holding portions 42 are fixed to the receiving slots 14 in an interference manner, a part of the holding portions 42 are loosely fitted to the receiving slots 14, that is, the grounding piece 4 only partially interferes with the receiving slots 14, so as to prevent the grounding piece 4 from being forced too much to exit from the receiving slots 14, the holding portions 42 exceed the fixing portions 212 in the direction in which the fixing portions 212 are inserted, the fixing portions 212 are designed to be short to reduce the loss, the grounding terminal 21 is fixed to the insulating body 1 by the grounding piece 4, and the holding portions 42 exceed the fixing portions 212 in the direction in which the fixing portions 212 are inserted, so that the fixing effect is better than that of the fixing portions 212.
As shown in fig. 1 to 7, in the assembly application of the electrical connector 100 according to the present invention, the grounding member 4 is first placed between the first inclined surface 16 and the second inclined surface 17 and inserted into the receiving slot 14, when the holding portion 42 is fixed in the receiving slot 14 in an interference manner, the fixing portion 212 of the grounding terminal 21 and the fixing portion 212 of the signal terminal 22 are then placed between the first guiding surface 18 and the second guiding surface 19 and inserted into the receiving slot 14, when the base portion 211 abuts against the insulating main body 1, the second connecting portion 2142 abuts against the stepped portion 15, the stepped portion 15 can provide a supporting function for the second connecting portion 2142, and the impedance is reduced with respect to the exposure to air, and a gap is provided between the first connecting portion 2141 and the insulating main body 2143, and with respect to the situation that the connecting portion 214 is entirely abutted against the insulating main body 1, it is possible to prevent the flatness of the connection part 214 from being not guaranteed due to the existence of manufacturing tolerance, and the contact parts 213 of the ground terminals 21 and the contact parts of the signal terminals 22 are exposed to the card slot 12, the material tape connecting the ground terminals 21 and the signal terminals 22 is cut at the material cut-off part 215, then the second terminals 3 are assembled in the same assembly manner as the ground terminals 21 and the signal terminals 22, the contact parts of the second terminals 3 are exposed to the card slot 12, and finally the electronic card is inserted into the card slot 12 from the direction of the front end 11 and abuts against the contact parts 213 of the ground terminals 21, the contact parts of the signal terminals 22 and the contact parts of the second terminals 3, so that the ground terminals 21, the signal terminals 22, the second terminals 3 and the electronic card are electrically connected, and the circuit board is welded to the fourth connection part 2144, the electrical connector 100 is electrically connected to the electronic card and the circuit board.
The electrical connector 100 of the present invention has the following beneficial effects:
(1) the fixing portion 212, the material breaking portion 215 and the grounding member 4 are vertically connected to the base portion 211, and at least a portion of the material breaking portion 215 is located between the fixing portion 212 and the clamping portion 43, because when the grounding terminal 21 is assembled into the insulating housing 1, the grounding terminal 21 is subjected to resistance at the position clamped by the fixing portion 212 and the grounding member 4, and at least a portion of the material breaking portion 215 is located between the fixing portion 212 and the clamping portion 43, so that a greater force can be provided when the grounding terminal 21 is assembled, the clamping portion 43 exceeds the fixing portion 212 in the direction of the rear end 13, so as to facilitate guiding the base portion 211 to be inserted into the clamping portion 43, the first guide surface 18 and the second guide surface 19 facilitate guiding the fixing portion 212 to be inserted into the receiving groove 14, and a gap is formed between the first guide surface 18 and the second guide surface 19 and the fixing portion 212, the clearance between the fixing portion 212 and the first guide surface 18 and the clearance between the fixing portion 212 and the second guide surface 19 reduce the frictional resistance between the fixing portion 212 and the insulating body 1, and the material breaking portion 215 is exposed outside the insulating body 1, so that the mechanism for inserting the grounding terminal 21 into the automatic machine is convenient to give way, and the riveting is convenient;
(2) the connecting portion 214 extends obliquely from the base portion 211 to the circuit board, and compared with the connecting portion 214 extending obliquely from the base portion 211 to the circuit board, the transmission path is shortened, and the length of the grounding member 4 along the inserting direction of the grounding terminal 21 is greater than or equal to the length of the fixing portion 212 along the inserting direction, so that the fixing effect is better than that of the fixing portion 212 fixed to the receiving slot 14 alone, and the stability of the grounding terminal 21 is enhanced by the holding force between the grounding member 4 and the grounding terminal 21, therefore, the fixing portion 212 can be designed to be short, the loss of the fixing portion 212 to signals is reduced, and the electrical connector 100 can realize high-frequency performance;
(3) the reinforcing portion 44 is closer to the base portion 211 than the connecting beam 41, so as to reduce a transmission path from the clamping portion 43 to a grounding position of the grounding member 4, the reinforcing portion 44 covers at least a portion of the fixing portion 212 in a direction parallel to the fixing portion 212, which is beneficial to reducing the amplitude of crosstalk, and the protruding portion 45 is closer to the signal terminal 22 than the connecting beam 41, so that the protruding portion 45 can shield interference generated when the signal terminal 22 abuts against the electronic card and the circuit board, which is beneficial to reducing crosstalk interference, and thus high-frequency performance of the electrical connector 100 is achieved;
(4) a protrusion 2121 is disposed on one side of the fixing portion 212 close to the electronic card, the protrusion 2121 abuts against an inner wall of the receiving slot 14, and for the protrusion 2121 on both sides, the resistance of the grounding terminal 21 during assembly is small, the grounding member 4 is disposed on one side far from the protrusion 2121, after the electronic card is inserted, because the contact portion 213 of the grounding terminal 21 and the contact portion of the signal terminal 22 are disposed above the electronic card, the force applied to the side of the fixing portion 212 having the protrusion 2121 is larger than the force applied to the side of the fixing portion 212 without the protrusion 2121, the protrusion 2121 is disposed on the side close to the electronic card, and for the side of the protrusion 2121 disposed far from the electronic card, the effect of preventing the grounding terminal 21 from sliding backwards out of the receiving slot 14 is better;
(5) the grounding piece 4 is arranged between the insulating body 1 and the grounding terminal 21, one side of the grounding piece 4 is fixed to the accommodating groove 14 in an interference manner, and the other side is fixed to the grounding terminal 21 in a clamping manner, and compared with the grounding piece 4 arranged on the outermost side of the insulating body 1, the grounding piece 4 is not easy to withdraw from the insulation body 1, and the grounding piece 4 is not contacted with the grounding terminal 21 in a clamping way, but in the contact manner, the contact portion between the ground contact 4 and the ground terminal 21 is not easily lifted, and a gap is formed between the clamping portion 43 and the first inclined surface 16, a gap is formed between the clamping portion 43 and the second inclined surface 17, the gap enables the grounding piece 4 to have space along the vertical and horizontal directions to generate elastic deformation, and ensures the stable contact between the grounding piece 4 and the grounding terminal 21;
(6) the clamping portion 43 is clamped at a position of the base portion 211 close to the fixing portion 212, and the grounding piece 4 is clamped at a position approximately at the center of the length of the grounding terminal 21, according to the definition of boundary conditions, at two ends of the circuit, the energy is zero, the maximum electromotive force (electromagnetic field) will appear at the center along the length of the first terminal 2 at a half-wavelength resonance point, and the grounding piece 4 is clamped at a position approximately at the middle of the first terminal 2, so that the amplitude can be halved, the interference strength between channels is reduced, the crosstalk problem of the electrical connector 100 is solved, and the high-frequency performance of the electrical connector 100 is improved;
(7) part of the fixing portion 42 is fixed to the receiving slot 14 in an interference manner, part of the fixing portion 42 is loosely fitted to the receiving slot 14, the grounding piece 4 only partially interferes with the receiving slot 14, the grounding piece 4 is prevented from being forced too much to exit from the receiving slot 14, the fixing portion 42 exceeds the fixing portion 212 in the insertion direction of the fixing portion 212, the grounding terminal 21 is fixed to the insulating body 1 by the grounding piece 4, the fixing effect is better than that of the fixing portion 212, and the fixing portion 212 can be designed to be short to reduce loss.
The following detailed description is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, so that variations of equivalent techniques using the teachings of the present specification and drawings are included within the scope of the present invention.
Claims (10)
1. An electrical connector for electrically connecting a first mating component to a second mating component, comprising:
the insulation body is provided with at least one accommodating groove;
at least one grounding terminal is fixedly arranged in the containing groove and provided with a base part, a contact part extends from one end of the base part and is used for being electrically connected with the first butt-joint element, a connecting part extends from the other end of the base part and is used for being electrically connected with the second butt-joint element, and a fixing part extends from the side direction of the base part and is fixedly held in the containing groove;
the grounding piece is fixedly arranged in the accommodating groove and provided with a connecting beam, the connecting beam and the fixing part are positioned on the same side of the base part and are accommodated in the accommodating groove, at least one clamping part extends from one side of the connecting beam, the clamping part is clamped at the position, close to the fixing part, of the base part, a buffer space is arranged between the position, close to the clamping part, of the connecting part and the insulating body, air is arranged in the buffer space, and the insulating body is supported in a butting mode at the position, close to the second butting element, of the connecting part.
2. The electrical connector of claim 1, wherein: the insulating body is provided with a first inclined plane and a second inclined plane at the positions of two opposite sides of the clamping part respectively, a gap is formed between the clamping part and the first inclined plane, and a gap is formed between the clamping part and the second inclined plane.
3. The electrical connector of claim 1, wherein: the connecting portion comprises a first connecting portion connected with the base portion, a second connecting portion extending from the first connecting portion in a direction close to the second butt joint element and abutting against the insulating body, a third connecting portion extending from the second connecting portion in a direction close to the second butt joint element, and a fourth connecting portion extending from the third connecting portion in a direction close to the second butt joint element and electrically contacting with the second butt joint element, the second connecting portion abuts against the insulating body, a gap is formed between the first connecting portion and the insulating body, and a gap is formed between the third connecting portion and the insulating body.
4. The electrical connector of claim 3, wherein: the length of the first connecting portion is approximately equal to that of the third connecting portion, the length of the second connecting portion is smaller than that of the first connecting portion, and the fourth connecting portion is bent and extended relative to the third connecting portion.
5. The electrical connector of claim 1, wherein: the insulation body is provided with a front end and a rear end which are opposite, a clamping groove penetrates through the front end and the rear end, the contact part of the grounding terminal and the contact part of the signal terminal are exposed in the clamping groove, the first butt-joint element is inserted into the clamping groove from the direction of the front end and abutted against the contact part of the grounding terminal and the contact part of the signal terminal, the grounding element is inserted into the accommodating groove from the rear end and fixed in the accommodating groove, and the first terminals are inserted into the accommodating groove from the rear end and fixedly arranged in the accommodating groove.
6. The electrical connector of claim 1, wherein: a protruding thorn is arranged on one side of the fixing portion close to the first butting element and abutted against the inner wall of the accommodating groove, the grounding piece is located on one side far away from the protruding thorn, and the length of the grounding piece along the insertion direction of the grounding terminal is larger than or equal to that of the fixing portion along the insertion direction.
7. The electrical connector of claim 1, wherein: the base portion is vertically arranged, a material breaking portion extends from the base portion to the direction opposite to the inserting direction of the grounding terminal, the material breaking portion is exposed outside the insulating body and connected with the base portion, and at least part of the material breaking portion is located between the fixing portion and the clamping portion.
8. The electrical connector of claim 1, wherein: at least one protruding part extends from one side of the connecting beam, the protruding part is located between the clamping parts, at least one signal terminal is arranged between every two adjacent clamping parts, and the protruding part is close to the signal terminal relative to the connecting beam.
9. The electrical connector of claim 1, wherein: the clamping part is provided with a first clamping part and a second clamping part which are oppositely arranged, the base part is clamped between the first clamping part and the second clamping part, a reinforcing part is connected with the connecting beam and is positioned between the first clamping part and the second clamping part, and the reinforcing part covers at least part of the fixing part along the direction parallel to the fixing part.
10. The electrical connector of claim 1, wherein: at least two fixing parts extend from the other side of the connecting beam, at least one fixing part is fixed in the containing groove in an interference mode, the other fixing part is loosely matched with the containing groove, and the fixing parts exceed the fixing parts along the inserting direction of the fixing parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328100.3A CN114243329A (en) | 2021-11-10 | 2021-11-10 | Electrical connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328100.3A CN114243329A (en) | 2021-11-10 | 2021-11-10 | Electrical connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114243329A true CN114243329A (en) | 2022-03-25 |
Family
ID=80748961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111328100.3A Pending CN114243329A (en) | 2021-11-10 | 2021-11-10 | Electrical connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114243329A (en) |
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|---|---|---|---|---|
| CN202997128U (en) * | 2012-11-29 | 2013-06-12 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN109742606A (en) * | 2019-01-28 | 2019-05-10 | 番禺得意精密电子工业有限公司 | Electric connector |
| US20200076135A1 (en) * | 2018-08-28 | 2020-03-05 | Foxconn (Kunshan) Computer Connector Co., Ltd. | Card edge connector with improved grounding member |
| CN111952748A (en) * | 2020-07-03 | 2020-11-17 | 重庆市鸿腾科技有限公司 | Card edge connector |
| CN112134095A (en) * | 2020-08-28 | 2020-12-25 | 富士康(昆山)电脑接插件有限公司 | Card edge connector |
| CN113036538A (en) * | 2019-06-17 | 2021-06-25 | 番禺得意精密电子工业有限公司 | Electrical connector |
| CN214478253U (en) * | 2020-04-23 | 2021-10-22 | 得意精密电子(苏州)有限公司 | Electrical connector |
-
2021
- 2021-11-10 CN CN202111328100.3A patent/CN114243329A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202997128U (en) * | 2012-11-29 | 2013-06-12 | 番禺得意精密电子工业有限公司 | Electric connector |
| US20200076135A1 (en) * | 2018-08-28 | 2020-03-05 | Foxconn (Kunshan) Computer Connector Co., Ltd. | Card edge connector with improved grounding member |
| CN109742606A (en) * | 2019-01-28 | 2019-05-10 | 番禺得意精密电子工业有限公司 | Electric connector |
| CN113036538A (en) * | 2019-06-17 | 2021-06-25 | 番禺得意精密电子工业有限公司 | Electrical connector |
| CN214478253U (en) * | 2020-04-23 | 2021-10-22 | 得意精密电子(苏州)有限公司 | Electrical connector |
| CN111952748A (en) * | 2020-07-03 | 2020-11-17 | 重庆市鸿腾科技有限公司 | Card edge connector |
| CN112134095A (en) * | 2020-08-28 | 2020-12-25 | 富士康(昆山)电脑接插件有限公司 | Card edge connector |
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