CN213212565U - Grounding structure of electric connector - Google Patents
Grounding structure of electric connector Download PDFInfo
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- CN213212565U CN213212565U CN202021829600.6U CN202021829600U CN213212565U CN 213212565 U CN213212565 U CN 213212565U CN 202021829600 U CN202021829600 U CN 202021829600U CN 213212565 U CN213212565 U CN 213212565U
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Abstract
The invention provides a grounding structure of an electric connector, wherein a butt joint part with an insertion space is arranged at one side of a base of an insulating base body, a terminal group containing a plurality of conductive terminals is arranged in a plurality of terminal grooves at two side wall surfaces of the insertion space in a penetrating way, a communicated positioning part is arranged at the bottom surface of the base at the inner side of the two side wall surfaces of the terminal grooves, a plurality of spaced accommodating grooves are arranged at the positioning part, and a grounding device is arranged in the accommodating grooves by utilizing a plurality of finger parts to be positioned, wherein the grounding device is integrally formed by utilizing conductive plastic outside a metal flat plate in an in-mold injection molding way, the conductive plastic is directly formed to form the finger parts at the corresponding positions of the plurality of conductive terminals in the terminal group, the plurality of finger parts are convexly provided with lapping parts capable of contacting the conductive terminals for specific grounding towards the outer side edge, and the conductive plastic is formed into a plurality of isolation grooves according to the signal characteristics of different, so as to achieve the purpose of reducing the interference between the signal characteristics of different terminal sets and suppressing the noise.
Description
Technical Field
The present invention provides a grounding structure of an electrical connector, and more particularly to a grounding structure of an insulating base body, which is combined with a grounding device capable of contacting a specific grounding terminal, wherein the grounding device is formed by molding conductive plastic outside a metal plate in an injection molding manner, and the conductive plastic is molded into a plurality of isolation slots according to signal characteristics of different terminal groups, so as to ensure the stability of the whole signal transmission.
Background
The connector is developed into various types according to the product, power and use environment of the connector, and can be applied to products such as computers, servers, computer peripheral equipment (such as keyboards, mice, printers and the like), peripheral equipment of on-vehicle hosts (such as vehicle computers, satellite navigation and the like), telecommunication and communication equipment, household appliances and the like.
Furthermore, as the design of the electronic products tends to be light, thin, short and small, and in order to reduce the volume of various electronic products, the connectors inside the electronic products need to be more precise and miniaturized, and the overall structural strength needs to be enhanced accordingly, so as to meet the current trend of development, a common connector (such as a board-to-board connector, a wire-to-board connector, etc.) usually utilizes a male terminal connector and a female terminal connector to perform a matching and butting, and transmits a signal or a power source to a control circuit through a circuit board, so as to perform a corresponding operation function.
In addition, in addition to the miniaturization of the connector, the requirements for transmission speed and bandwidth are higher and higher, the problem of high frequency signal transmission under the same phase is more and more endless, and with the miniaturization of the connector and the great increase of the transmission speed, the number of terminal groups is increased and the distribution is more dense, which is very easy to cause electromagnetic wave and crosstalk interference during the transmission of high frequency signals due to the too close distance between the adjacent terminals, and the connector will grow at a faster speed in the future, so that the signal interference problem of the connector itself will be more serious, and for the high frequency connector, among the problem of many signal integrity, the problem of crosstalk (Cross-talk) interference is the most serious, whereas the conventional high frequency connector includes an insulating body, a plurality of ground terminals installed in the upper and lower rows of terminals in the insulating body, and ground tabs connecting the ground terminals together, however, the grounding strip has a complex structure, and needs to be assembled with the engaging member made of an insulating material first, so that the grounding strip can be further installed inside the insulating body through the engaging member, and the elastic arms of the grounding strip respectively abut against the grounding terminal to be connected in series to form common grounding.
SUMMERY OF THE UTILITY MODEL
Therefore, in view of the above-mentioned problems and disadvantages, the inventor of the present invention has a new grounding structure of the electrical connector, which is based on the evaluation and consideration of various related data and the continuous trial and modification of years of research and development experience in this industry.
The main purpose of this creation is to reduce the interference between the signal characteristics of different terminal sets and to suppress the noise.
To achieve the above object, the present invention provides a grounding structure of an electrical connector, which includes an insulating base, a terminal set and a grounding device, wherein: the upper part of the base of the insulating base body is provided with a butt joint part with an inserting space inside, a plurality of terminal grooves with installation parts arranged at intervals along the length direction are respectively arranged at the front side wall surface and the rear side wall surface of each inserting space, each terminal groove is convexly provided with a plurality of opposite spacing plates from the two side wall surfaces towards the central direction, a rib plate with a positioning part is arranged between the plurality of terminal grooves at the two side wall surfaces of the bottom of the base along the length direction, a plurality of opposite positioning plates are convexly arranged at the front side wall surface and the rear side wall surface of each rib plate towards the direction of the spacing plates, and a containing groove communicated with the terminal grooves is formed between the rib plate and the adjacent positioning plates; the terminal group comprises conductive terminals which are arranged in a plurality of terminal grooves in a penetrating way, wherein a suspended contact part is arranged above the base part of the conductive terminal, and a welding part which penetrates out downwards and is exposed out of the bottom of the insulating seat body is arranged below the base part; and the outer side of the metal plate of the grounding device is formed with conductive plastic by utilizing an in-mold injection molding mode, the conductive plastic is directly formed into finger-shaped parts corresponding to the positions of the accommodating grooves of the rib plates, the outward sides of the finger-shaped parts are convexly provided with lap joint parts capable of contacting with specific grounding terminals, and the conductive plastic is formed into a shape capable of embedding the rib plates and the positioning plates into the isolation grooves correspondingly to form a positioning according to different groups of signal characteristics.
In one embodiment, a plurality of slots are formed in the plugging space along the length direction in a separated manner.
In one embodiment, the spacer has a guiding groove extending from the bottom surface of the base to the inside, and the conductive terminals have protruding stabs at both sides of the base for fixing to the wall of the guiding groove.
In one embodiment, the bottom surface of the base of the insulating base body is provided with fixing grooves at the left and right sides respectively, and positioning terminals are respectively penetrated in the fixing grooves.
In one embodiment, positioning pillars protruding downwards are respectively disposed at the left and right sides of the bottom surface of the base.
In one embodiment, the conductive terminals of the terminal set are respectively provided with a welding part which penetrates out of the base of the insulating base body and is exposed outside the base of the insulating base body to form a common plane.
In the invention, a plurality of terminal grooves of a mounting part are arranged on the other side of a butt joint part of a base of an insulating base body, a plurality of conductive terminals of a terminal group are directly penetrated in the terminal grooves to form a positioning part, finger-shaped parts of conductive plastics of a grounding device are forced to form a positioning part towards the direction of a containing groove of the positioning part of the base, lapping parts which are arranged at the specific positions of the finger-shaped parts and protrude outwards extend into the containing groove and are abutted against the surfaces of the corresponding conductive terminals for grounding to form electric contact, wherein the grounding device is integrally formed with the conductive plastics outside a metal flat plate in an injection molding (insert molding) mode, the conductive plastics are directly formed to form the finger-shaped parts at the corresponding positions of the conductive terminals in the terminal group, the lapping parts which can contact the specific grounding terminals are arranged at the outward side edges of the finger-shaped parts, and the conductive plastics are formed to form a plurality of isolation grooves according to the signal characteristics of different terminal groups, so that the conductive plastics are not in contact with each other, thereby achieving the purpose of reducing the interference between the signal characteristics of different terminal sets and suppressing the noise.
Drawings
Fig. 1 is a perspective view of the present creation.
Fig. 2 is an exploded perspective view of the present invention.
Figure 3 is a side sectional view of the present invention.
Fig. 4 is a partially enlarged perspective view of the present creation.
FIG. 5 is a partially enlarged perspective view of another perspective exploded view of the present invention.
FIG. 6 is a perspective view of the preferred embodiment of the present invention before plugging.
FIG. 7 is a side sectional view of the edge card of the present invention after insertion.
List of reference numerals: 1-an insulating base; 11-a base; 111-a fixation groove; 112-positioning columns; 12-a docking station; 120-a plug space; 1201-slot; 13-a mounting portion; 131-terminal slots; 1311-spacer plate; 1312-a guide groove; 14-a location section; 141-rib plate; 1411-positioning plate; 142-a receiving groove; 15-positioning terminals; 2-terminal group; 21-a conductive terminal; 211-a base; 2111-convex thorn; 212-a contact; 213-a weld; 3-a grounding device; 31-a metal flat plate; 32-conductive plastic; 320-an isolation trench; 321-a finger; 3211-lap joint; 4-a circuit board; 41-welding surface; 411-pad; 412-piercing; 5-edge card; 51-a plug-in part; 511-contact; 512-groove lacking.
Detailed Description
To achieve the above objects and advantages, the present invention provides a technical solution and a structure thereof, which are described in detail below with reference to the preferred embodiments of the present invention for complete understanding.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, which are respectively a three-dimensional external view, an exploded view, a side sectional view, a partially enlarged exploded view of the present invention, and a partially enlarged view of another perspective, clearly seen from the drawings, the grounding structure of the present invention comprises an insulating base 1, a terminal set 2, and a grounding device 3, wherein:
the insulation base body 1 is provided with a vertical base 11, a butt joint part 12 with a plug-in space 120 inside is arranged above the base 11, a plurality of slots 1201 are formed in the insertion space 120 at intervals along the length direction, a plurality of terminal slots 131 for mounting the parts 13 are formed at the front and rear side wall surfaces of each slot 1201 at intervals along the length direction, and each terminal groove 131 is provided with a plurality of opposite spacing plates 1311 protruding from two side walls towards the central direction, the partition 1311 is provided with a guide groove 1312 extending upward from the bottom surface of the base 11 for a certain distance, ribs 141 of the positioning portion 14 are provided along the length direction between the plurality of terminal grooves 131 on both side walls of the bottom of the base 11, and a plurality of positioning plates 1411 are respectively arranged on the front and rear side wall surfaces of each rib plate 141 in a protruding manner towards the direction of the partition 1311, therefore, the accommodating grooves 142 communicating with the terminal grooves 131 are formed between the rib plates 141 and the adjacent positioning plates 1411.
Moreover, the bottom surface of the base 11 is provided with fixing grooves 111 at the left and right sides, respectively, and positioning terminals 15 are respectively penetrated in the fixing grooves 111, and the bottom surface of the base 11 is provided with positioning posts 112 protruding downward at the left and right sides, respectively.
The terminal set 2 includes a plurality of conductive terminals 21 with different signal characteristics for transmitting signals, power (such as positive and negative electrodes) and grounding, wherein the two sides of the base 211 of the conductive terminal 21 are both provided with outward protrusions 2111, the upper part of the base 211 is provided with a suspended contact portion 212, and the lower part of the base 211 is provided with a welding portion 213 which penetrates downward and is exposed out of the bottom of the insulating base 1.
The outer side of the metal plate 31 of the grounding device 3 is formed with conductive plastic 32 by using an insert molding (insert molding) method, and at the same time, the conductive plastic 32 is directly formed with fingers 321 corresponding to the positions of the receiving slots 142 of the rib 141, and the fingers 321 are provided with outward protruding bridging portions 3211 capable of contacting with the specific grounding conductive terminals 21, and the conductive plastic 32 is formed into the rib 141 and the positioning plate 1411 according to the signal characteristics of the corresponding different terminal groups 2 and embedded into the corresponding isolation slots 320 to be positioned, so that the conductive plastics 32 are all in a non-contact state, and the purpose of reducing the interference of the signal pair and suppressing the noise is achieved.
When the insulating base 1 and the terminal set 2 of the present invention are assembled, the plurality of conductive terminals 21 are directly installed in the terminal grooves 131 of the installation portion 13, the contact portions 212 of the conductive terminals 21 respectively extend upward out of the terminal grooves 131 of the mating portion 12 and then extend into the slots 1201 of the inserting space 120, and after each conductive terminal 21 of the terminal set 2 is pushed into the positioning position, the protruding thorns 2111 on both sides of the base portion 211 are clamped in the guide grooves 1312 of the terminal grooves 131 to be combined into a whole, and the welding portions 213 of the plurality of conductive terminals 21 respectively extend out and are exposed at the bottom of the base 11 to form a common plane, and similarly, the two groups of conductive terminals 21 can be respectively installed in the terminal grooves 131 of different lengths of the installation portion 13 to be arranged side by side, so that the number of the plurality of conductive terminals 21 that can be installed in the installation portion 13 is increased and the density is higher.
After the insulating base 1 and the terminal set 2 are assembled, the grounding device 3 can be forced into the receiving groove 142 of the positioning portion 14 of the base 11 by using the finger portion 321 of the conductive plastic 32, and the rib plate 141 and the positioning plate 1411 are embedded into the corresponding isolation groove 320 to form a positioning, at this time, the specific positions of the finger portions 321 are made to be the bridging portions 3211 protruding outward, and the bridging portions are extended into the receiving groove 142 and abut against the corresponding surface of the conductive terminal 21 for grounding to form an electrical contact, however, the present invention has formed the conductive plastic 32 into the isolation grooves 320 according to the signal characteristics of different terminal sets, so that the conductive plastics 32 are all in a non-contact state, thereby achieving the purpose of reducing the interference between the signal characteristics of different terminal sets and suppressing the noise, and having good high frequency characteristics.
Referring to fig. 6 and 7, which are a perspective view before plugging and a side sectional view after edge card plugging in the preferred embodiment of the present invention, it can be clearly seen from the figures that when the insulating base 1 is mounted on the circuit board 4, the positioning posts 112 of the base 11 are inserted into the corresponding through holes 412 on the soldering surface 41, and the terminal set 2 is soldered to the corresponding pads 411 on the soldering surface 41 at the soldering portions 213 of the conductive terminals 21 by a Surface Mount Technology (SMT) soldering method to form electrical connections.
In the process of inserting the edge card 5 into the insulating base 1, the inserting portion 51 of the edge card extends into the inserting slot 1201 along the inserting space 120 of the abutting portion 12, and the contacting portions 212 of the front and rear rows of conductive terminals 21 respectively abut against and contact the contacts 511 on the two side surfaces of the inserting portion 51 to form an electrical connection, and the wall surface formed between two adjacent inserting slots 1201 extends into the slot 512 of the inserting portion 51, so that the inserting portion 51 of the edge card 5 can be completely inserted into the abutting portion 12 to form a use state of the edge card.
Therefore, the present invention mainly aims at that a plurality of conductive terminals 21 are directly inserted into a plurality of terminal slots 131 of an insulating base 1 to be positioned, and the grounding device 3 utilizes the finger-shaped portion 321 of the conductive plastic 32 to be forced into the containing slot 142 of the positioning portion 14 of the base 11 to be positioned, and makes the bridging portion 3211 at the specific position of the plurality of finger-shaped portions 321 extend from the containing slot 142 and abut against the surface of the corresponding conductive terminal 21 for grounding to be in electrical contact, wherein the grounding device 3 utilizes the conductive plastic 32 to be integrally formed outside the metal plate 31 in an injection molding (insert molding) manner, the conductive plastic 32 is formed into a plurality of isolation slots 320 according to the signal characteristics of corresponding different terminal sets 2, so as to make the plurality of conductive plastics 32 all become a non-contact state, and connect the adjacent conductive terminals 21 for grounding of different terminal sets 2 in series through each conductive plastic 32 with the shortest transmission path, and a common grounding path is formed between the conductive plastics 32 through the metal plate 31, so as to achieve the purpose of reducing the interference of the electrical characteristics between the signal pairs of different terminal sets 2, and suppressing noise through the high dielectric constant and low resistivity of the conductive plastics 32, but also has good high-frequency characteristics.
The above detailed description is for the purpose of illustrating a preferred embodiment of the present disclosure, but the present disclosure is not intended to limit the scope of the claims, and all other equivalent variations and modifications which do not depart from the spirit of the present disclosure are intended to be included within the scope of the claims.
Claims (6)
1. The utility model provides an electric connector's ground structure, is including insulating pedestal, terminal group and earthing device, its characterized in that:
the upper part of the base of the insulating base body is provided with a butt joint part with an inserting space inside, a plurality of terminal grooves with installation parts arranged at intervals along the length direction are respectively arranged at the front side wall surface and the rear side wall surface of each inserting space, each terminal groove is convexly provided with a plurality of opposite spacing plates from the two side wall surfaces towards the central direction, a rib plate with a positioning part is arranged between the plurality of terminal grooves at the two side wall surfaces of the bottom of the base along the length direction, a plurality of opposite positioning plates are convexly arranged at the front side wall surface and the rear side wall surface of each rib plate towards the direction of the spacing plates, and a containing groove communicated with the terminal grooves is formed between the rib plate and the adjacent positioning plates;
the terminal group comprises conductive terminals which are arranged in a plurality of terminal grooves in a penetrating way, wherein a suspended contact part is arranged above the base part of the conductive terminal, and a welding part which penetrates out downwards and is exposed out of the bottom of the insulating seat body is arranged below the base part; and
the outer side of the metal plate of the grounding device is formed with conductive plastic by utilizing an in-mold injection molding mode, the conductive plastic is directly formed into finger-shaped parts corresponding to the positions of the accommodating grooves of the rib plates, the outward sides of the finger-shaped parts are convexly provided with lap joint parts capable of contacting with specific grounding terminals, and the conductive plastic is formed into a shape capable of being embedded into the isolation grooves correspondingly by the rib plates and the positioning plates to be positioned according to different groups of signal characteristics.
2. The grounding structure of an electrical connector according to claim 1, wherein: a plurality of slots are formed in the plugging space along the length direction in a separated mode.
3. The grounding structure of an electrical connector according to claim 1, wherein: the partition board is provided with a guide groove extending inwards from the bottom surface of the base for a distance of concave, and both sides of the base of the conductive terminal are provided with convex thorns capable of being fixed on the wall surface of the guide groove outwards.
4. The grounding structure of an electrical connector according to claim 1, wherein: the bottom surface of the base of the insulating base body is respectively provided with fixing grooves at the left side and the right side, and positioning terminals are respectively arranged in the fixing grooves in a penetrating way.
5. The grounding structure of an electrical connector according to claim 1, wherein: the bottom surface of the base is respectively provided with positioning columns protruding downwards at the left side and the right side.
6. The grounding structure of an electrical connector according to claim 1, wherein: the conductive terminals of the terminal set are respectively provided with a welding part which penetrates out of the base of the insulating base body and is exposed outside the base to form a common plane at the other side of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021829600.6U CN213212565U (en) | 2020-08-27 | 2020-08-27 | Grounding structure of electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021829600.6U CN213212565U (en) | 2020-08-27 | 2020-08-27 | Grounding structure of electric connector |
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| Publication Number | Publication Date |
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| CN213212565U true CN213212565U (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021829600.6U Active CN213212565U (en) | 2020-08-27 | 2020-08-27 | Grounding structure of electric connector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422256A (en) * | 2021-06-25 | 2021-09-21 | 中航光电科技股份有限公司 | Shielding module, connector, cable connector and connector assembly |
| CN113991341A (en) * | 2021-10-25 | 2022-01-28 | 东莞市安阔欣精密电子有限公司 | Connector with excellent high-frequency performance and preparation method thereof |
-
2020
- 2020-08-27 CN CN202021829600.6U patent/CN213212565U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113422256A (en) * | 2021-06-25 | 2021-09-21 | 中航光电科技股份有限公司 | Shielding module, connector, cable connector and connector assembly |
| CN113422256B (en) * | 2021-06-25 | 2022-04-01 | 中航光电科技股份有限公司 | Shielding module, connector, cable connector and connector assembly |
| CN113991341A (en) * | 2021-10-25 | 2022-01-28 | 东莞市安阔欣精密电子有限公司 | Connector with excellent high-frequency performance and preparation method thereof |
| CN113991341B (en) * | 2021-10-25 | 2022-11-11 | 东莞市安阔欣精密电子有限公司 | Connector with excellent high-frequency performance and preparation method thereof |
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