CN112636090A - Shielding sheet, terminal module using the same and connector - Google Patents
Shielding sheet, terminal module using the same and connector Download PDFInfo
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- CN112636090A CN112636090A CN202011372480.6A CN202011372480A CN112636090A CN 112636090 A CN112636090 A CN 112636090A CN 202011372480 A CN202011372480 A CN 202011372480A CN 112636090 A CN112636090 A CN 112636090A
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- sheet
- bulges
- filtering
- adaptive
- connector
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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
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6464—Means for preventing cross-talk by adding capacitive elements
-
- 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
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
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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
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
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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
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
Abstract
The invention relates to a shielding sheet, a terminal module using the shielding sheet and a connector, wherein the shielding sheet comprises a sheet main body and a filtering bulge, and the filtering bulge is arranged at the front end of the sheet main body; the filter bulges are arranged at intervals with the adaptive signal contact at the adaptive end of the connector when in use and form a filter capacitor. When the connector is used, a filter capacitor is formed between the filter bulge and the adaptive signal contact, a good filtering effect can be achieved, radiation of the adaptive signal contact is absorbed through the filter capacitor, the radiation intensity of the adaptive signal contact is weakened, the signal common path between two adjacent signal differential pairs is effectively avoided, the resonance condition of a joint area in the connector is improved, the crosstalk value of the joint area is effectively reduced, and therefore the signal transmission quality is improved.
Description
Technical Field
The present invention relates to a shield sheet, and a terminal module and a connector using the shield sheet.
Background
In a modern data communication transmission system, the transmission rate is higher and higher, a high-speed interconnection system is widely applied to a communication network and a data exchange system, a high-speed backplane connector is used as a core bridge for data communication, the performance requirement of the high-speed backplane connector is higher and higher, crosstalk is greatly reduced by applying shielding sheets in various forms, the SI performance (signal integrity) of the high-speed backplane connector is improved, and the transmission requirement of high rate can be met.
The existing high-speed backplane connector comprises two ends which are mutually inserted, wherein one end is a bent insertion end, and the other end is an adaptive end. The mating end includes a mating signal contact and a mating ground contact. The bent plug-in end comprises an insulator, at least two terminal modules are fixedly mounted on the insulator, the high-speed backplane connector is shielded by a shielding sheet or conductive plastic, as shown in fig. 1 and 2, each terminal module comprises an injection molded body 101, a shielding sheet 102 is arranged on one side of the injection molded body 101, and the shielding sheet 102 and the injection molded body 101 are fixed together in an injection molding mode to form a terminal module 103, which is commonly called wafer. The injection molded body 101 comprises a wiring terminal, the wiring terminal comprises a signal terminal and a ground terminal, one end of the signal terminal is provided with a signal contact 105, one end of the ground terminal is provided with a ground contact 104, and the signal contact 105 and the ground contact 104 are both of a spring sheet type structure. A shield terminal spring 106 is arranged on the shield 102 corresponding to the ground contact 104, and when in use, the adaptive ground contact is inserted between the ground contact 104 and the shield terminal spring 106 to realize ground shielding, and the adaptive signal contact is inserted at the signal contact 105 to realize signal connection.
The prior art shield blades 102 contact mating ground contacts, the ground contacts 104, to form a signal shield return path. However, with the improvement of the transmission rate, the density of the terminals is increased, the arrangement between the signal terminals is more dense, but in actual processing, a processing error inevitably occurs, which causes poor grounding contact between the straight male and the bent female, weakens the shielding effect between two adjacent signal differential pairs, easily causes the phenomena of signal radiation crosstalk and common circuit, thereby causing a resonance point, causing the SI performance (signal integrity) to deteriorate, and even affecting the transmission quality of high-frequency signals.
Disclosure of Invention
The invention aims to provide a shielding sheet to solve the technical problem of poor signal transmission quality caused by resonance in the prior art; a terminal module and a connector using the shielding plate are also provided to solve the above technical problems.
In order to achieve the purpose, the technical scheme of the shielding sheet provided by the invention is as follows: a shield sheet comprising:
the sheet main body defines one end of the sheet main body facing the adapter end of the connector as a front end when in use;
the filtering bulge is arranged at the front end of the flaky main body and is arranged on one side of the flaky main body in a protruding manner along the thickness direction of the flaky main body;
the filter bulges are arranged at intervals with the adaptive signal contact at the adaptive end of the connector when in use and form a filter capacitor.
The beneficial effects are that: when the connector is used, a filter capacitor is formed between the filter bulge and the adaptive signal contact, a good filtering effect can be achieved, radiation of the adaptive signal contact is absorbed through the filter capacitor, the radiation intensity of the adaptive signal contact is weakened, the signal common path between two adjacent signal differential pairs is effectively avoided, the resonance condition of a joint area in the connector is improved, the crosstalk value of the joint area is effectively reduced, and therefore the signal transmission quality is improved.
As a further optimized scheme, the filtering protrusions comprise end filtering protrusions, and the end filtering protrusions are used for being matched with the ends in the front-back direction of the adaptive signal contact to form a filtering capacitor.
The beneficial effects are that: generally, the positions for contacting and conducting with the signal contacts in the adaptive signal contacts are not located at the end parts, after the bent insertion end is inserted into the adaptive end, the end parts of the adaptive signal contacts are equivalent to form an antenna, the radiation intensity at the position is the maximum, the end part filtering bulges correspond to the position, the position with the maximum radiation intensity can be weakened, and the effect is better.
As a further optimized scheme, the filtering protrusions further comprise side filtering protrusions, and the side filtering protrusions are used for being matched with the sides of the adaptive signal contacts to form filtering capacitors;
the side filtering bulges are used for contacting with the adaptive grounding contact of the adaptive end of the connector to realize grounding shielding;
the end part filtering bulges and the two side part filtering bulges are matched to form an adaptive signal contact corresponding area with an opening at the front end, and the adaptive signal contact corresponding area is used for the adaptive signal contact to extend into.
The beneficial effects are that: through lateral part filtering bulge and tip filtering bulge, can form trilateral shielding surrounded adaptation signal contact corresponding area, improve the shielding effect to adaptation signal contact, be favorable to the joint area to crosstalk the shielding.
As a further optimized scheme, the filtering protrusion is a bulge integrally formed on the sheet main body in a stamping manner.
The beneficial effects are that: the filtering bulges are formed by integral punch forming, and the processing mode is simpler.
As a further optimized scheme, a clamping jaw is arranged on the sheet main body and used for extending into a through hole in the one-time injection molding body so that the shielding sheet is clamped on the one-time injection molding body;
or the sheet main body is provided with a through hole for the jack catch on the one-time injection molding body to be matched and penetrated so that the shielding sheet is clamped on the one-time injection molding body.
The beneficial effects are that: the shielding piece is clamped and connected with the one-time injection body, secondary injection molding is avoided, the structure is simple, and the assembly mode is simple.
The technical scheme of the terminal module is as follows: a terminal module, comprising:
the injection molding body comprises a signal contact and a grounding contact;
the shielding sheet is fixedly arranged on one side of the one-time injection molding body;
the shielding sheet includes:
the sheet main body defines one end of the sheet main body facing the adapter end of the connector as a front end when in use;
the filtering bulge is arranged at the front end of the flaky main body and is arranged on one side of the flaky main body in a protruding manner along the thickness direction of the flaky main body;
the filter bulges are arranged at intervals with the adaptive signal contact at the adaptive end of the connector when in use and form a filter capacitor.
The beneficial effects are that: when the connector is used, a filter capacitor is formed between the filter bulge and the adaptive signal contact, a good filtering effect can be achieved, radiation of the adaptive signal contact is absorbed through the filter capacitor, the radiation intensity of the adaptive signal contact is weakened, the signal common path between two adjacent signal differential pairs is effectively avoided, the resonance condition of a joint area in the connector is improved, the crosstalk value of the joint area is effectively reduced, and therefore the signal transmission quality is improved.
As a further optimized scheme, the filtering protrusions comprise end filtering protrusions, and the end filtering protrusions are used for being matched with the ends in the front-back direction of the adaptive signal contact to form a filtering capacitor.
The beneficial effects are that: generally, the positions for contacting and conducting with the signal contacts in the adaptive signal contacts are not located at the end parts, after the bent insertion end is inserted into the adaptive end, the end parts of the adaptive signal contacts are equivalent to form an antenna, the radiation intensity at the position is the maximum, the end part filtering bulges correspond to the position, the position with the maximum radiation intensity can be weakened, and the effect is better.
As a further optimized scheme, the filtering protrusions further comprise side filtering protrusions, and the side filtering protrusions are used for being matched with the sides of the adaptive signal contacts to form filtering capacitors;
the side filtering bulges are used for contacting with the adaptive grounding contact of the adaptive end of the connector to realize grounding shielding;
the end part filtering bulges and the two side part filtering bulges are matched to form an adaptive signal contact corresponding area with an opening at the front end, and the adaptive signal contact corresponding area is used for the adaptive signal contact to extend into.
The beneficial effects are that: through lateral part filtering bulge and tip filtering bulge, can form trilateral shielding surrounded adaptation signal contact corresponding area, improve the shielding effect to adaptation signal contact, be favorable to the joint area to crosstalk the shielding.
As a further optimized scheme, the ground contact is a ground terminal spring sheet, and the ground terminal spring sheet is used for being matched with the side filtering bulge to clamp the adaptive ground contact.
The beneficial effects are that: the grounding contact is a grounding terminal elastic sheet which can be matched with the side filtering protrusion to clamp the adaptive grounding contact, so that a grounding backflow path is increased, a double-sided grounding loop is formed, and the shielding effect is better.
As a further optimized scheme, the filtering protrusion is a bulge integrally formed on the sheet main body in a stamping manner.
The beneficial effects are that: the filtering bulges are formed by integral punch forming, and the processing mode is simpler.
As a further optimized scheme, a clamping jaw is arranged on the sheet main body and used for extending into a through hole in the one-time injection molding body so that the shielding sheet is clamped on the one-time injection molding body;
or the sheet main body is provided with a through hole for the jack catch on the one-time injection molding body to be matched and penetrated so that the shielding sheet is clamped on the one-time injection molding body.
The beneficial effects are that: the shielding piece is clamped and connected with the one-time injection body, secondary injection molding is avoided, the structure is simple, and the assembly mode is simple.
The technical scheme of the connector is as follows: the utility model provides a connector, includes curved grafting end and the adaptation end of mutual opposite insertion, and the adaptation end includes adaptation signal contact and adaptation ground contact, and curved grafting end includes the insulator, has arranged two at least terminal modules along the straight line direction in proper order on the insulator, and the terminal module includes:
the injection molding body comprises a signal contact and a grounding contact;
the shielding sheet is fixedly arranged on one side of the one-time injection molding body;
the shielding sheet includes:
the sheet main body defines one end of the sheet main body facing the adapter end of the connector as a front end when in use;
the filtering bulge is arranged at the front end of the flaky main body and is arranged on one side of the flaky main body in a protruding manner along the thickness direction of the flaky main body;
the filter bulges are arranged at intervals with the adaptive signal contact at the adaptive end of the connector when in use and form a filter capacitor.
The beneficial effects are that: when the connector is used, a filter capacitor is formed between the filter bulge and the adaptive signal contact, a good filtering effect can be achieved, radiation of the adaptive signal contact is absorbed through the filter capacitor, the radiation intensity of the adaptive signal contact is weakened, the signal common path between two adjacent signal differential pairs is effectively avoided, the resonance condition of a joint area in the connector is improved, the crosstalk value of the joint area is effectively reduced, and therefore the signal transmission quality is improved.
As a further optimized scheme, the filtering protrusions comprise end filtering protrusions, and the end filtering protrusions are used for being matched with the ends in the front-back direction of the adaptive signal contact to form a filtering capacitor.
The beneficial effects are that: generally, the positions for contacting and conducting with the signal contacts in the adaptive signal contacts are not located at the end parts, after the bent insertion end is inserted into the adaptive end, the end parts of the adaptive signal contacts are equivalent to form an antenna, the radiation intensity at the position is the maximum, the end part filtering bulges correspond to the position, the position with the maximum radiation intensity can be weakened, and the effect is better.
As a further optimized scheme, the filtering protrusions further comprise side filtering protrusions, and the side filtering protrusions are used for being matched with the sides of the adaptive signal contacts to form filtering capacitors;
the side filtering bulges are used for contacting with the adaptive grounding contact of the adaptive end of the connector to realize grounding shielding;
the end part filtering bulges and the two side part filtering bulges are matched to form an adaptive signal contact corresponding area with an opening at the front end, and the adaptive signal contact corresponding area is used for the adaptive signal contact to extend into.
The beneficial effects are that: through lateral part filtering bulge and tip filtering bulge, can form trilateral shielding surrounded adaptation signal contact corresponding area, improve the shielding effect to adaptation signal contact, be favorable to the joint area to crosstalk the shielding.
As a further optimized scheme, the ground contact is a ground terminal spring sheet, and the ground terminal spring sheet is used for being matched with the side filtering bulge to clamp the adaptive ground contact.
The beneficial effects are that: the grounding contact is a grounding terminal elastic sheet which can be matched with the side filtering protrusion to clamp the adaptive grounding contact, so that a grounding backflow path is increased, a double-sided grounding loop is formed, and the shielding effect is better.
As a further optimized scheme, the filtering protrusion is a bulge integrally formed on the sheet main body in a stamping manner.
The beneficial effects are that: the filtering bulges are formed by integral punch forming, and the processing mode is simpler.
As a further optimized scheme, a clamping jaw is arranged on the sheet main body and used for extending into a through hole in the one-time injection molding body so that the shielding sheet is clamped on the one-time injection molding body;
or the sheet main body is provided with a through hole for the jack catch on the one-time injection molding body to be matched and penetrated so that the shielding sheet is clamped on the one-time injection molding body.
The beneficial effects are that: the shielding piece is clamped and connected with the one-time injection body, secondary injection molding is avoided, the structure is simple, and the assembly mode is simple.
Drawings
FIG. 1 is a schematic diagram of a prior art terminal module;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a schematic view of embodiment 1 of the connector of the present invention;
FIG. 4 is an exploded view of the curved nut of FIG. 3;
fig. 5 is a front view of the terminal module in embodiment 1 of the connector of the present invention;
fig. 6 is a rear view of the terminal module in embodiment 1 of the connector of the present invention;
fig. 7 is a side view of the terminal module in connector embodiment 1 of the present invention;
FIG. 8 is an exploded view of FIG. 7;
fig. 9 is a perspective view of a shield plate of the terminal module in embodiment 1 of the connector of the present invention;
fig. 10 is a side view of a shield plate of the terminal module in embodiment 1 of the connector of the present invention;
fig. 11 is a partial schematic view of a male signal pin and a female signal pin of embodiment 1 of the connector of the present invention.
Description of reference numerals: 101. performing primary injection molding on the body; 102. a shielding sheet; 103. a terminal module; 104. a ground contact; 105. a signal contact; 106. a shield terminal spring; 200. bending a nut; 201. an insulator; 202. a terminal module; 203. a fixing sheet; 204. positioning a plate; 2021. performing primary injection molding on the body; 20211. a signal terminal spring plate; 20212. a ground terminal spring; 20213. fish eyes; 2022. a shielding sheet; 20221. a sheet-like body; 20222. a non-contact bulge; 20223. contacting the bump; 20224. a corresponding region of a male signal pin; 20225. a claw; 300. straightening; 301. an insulating housing; 302. a pin is grounded at the male end; 303. a male end signal pin; 400. and a filter capacitor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Embodiment 1 of the connector provided by the present invention:
as shown in fig. 3 to 11, the connector includes a bent female member 200 and a straight male member 300 which are inserted into each other, and the bent female member 200 and the straight male member 300 are both forward ends at one end which is inserted into each other.
The bending nut 200 is structured as shown in fig. 3 to 10, the bending nut 200 includes an insulator 201, a plurality of (at least two) terminal modules 202 are sequentially arranged in the insulator 201, and the terminal modules 202 are sequentially arranged in a thickness direction of the terminal modules 202. The structure of each terminal module 202 is similar, and only one of the terminal modules is described below as an example.
The structure of the terminal module 202 is as shown in fig. 5 to 10, the terminal module 202 includes an injection molded body 2021, the injection molded body 2021 includes a ground terminal and a signal differential pair alternately arranged in sequence, wherein the signal differential pair includes two signal terminals arranged side by side, the ground terminal and the signal terminal both have a mating end for mating with the straight male connector 300, and a mounting end for connecting with a printed board, and the ground terminal and the signal terminal both have a fish eye 20213 at the mounting end. The signal terminal has a signal terminal spring 20211 at the mating end, and the ground terminal has a ground terminal spring 20212 at the mating end. During processing, the signal terminal and the ground terminal are cast together by integral casting, so as to form the one-time injection molding 2021. As shown in fig. 5 and 6, the signal terminal shrapnel 20211 and the ground terminal shrapnel 20212 in the injection molded body 2021 are arranged in sequence along a straight line, and for convenience of description, the extending direction of the straight line is defined as a first direction in this embodiment, and the first direction is perpendicular to the front-back direction and the thickness direction of the terminal module 202. Both the grounding terminal spring 20212 and the signal terminal spring 20211 have a side for elastically attaching to the corresponding male terminal grounding pin 302 and the male terminal signal pin 303 of the male contact 300.
A shielding plate 2022 is fixed to one side of each injection molded body 2021 in the thickness direction, where the side is used for elastically attaching the ground terminal spring 20212 and the signal terminal spring 20211 to the male ground pin 302 and the male signal pin 303. The shield sheet 2022 is structured as shown in fig. 9 and 10, the shield sheet 2022 includes a sheet-like body 20221, the sheet-like body 20221 is disposed on one side of the injection molded body 2021 after being assembled, and a non-contact bulge 20222 and a contact bulge 20223 are provided on a front end (i.e., an end facing the straight male member 300 when in use) of the sheet-like body 20221. The non-contact bump 20222 and the contact bump 20223 are each arranged to protrude toward the corresponding one-shot molded body 2021. Specifically, the position of the sheet-shaped main body 2221 where the contact bump 20223 is located is opposite to the position of the grounding terminal spring 20212 in the injection molded body 2021, and can be matched with the grounding terminal spring 20212 to clamp the male-end grounding pin 302. As shown in fig. 5, the ground terminal elastic sheet 20212 is a bifurcated structure, and there are two contact bulges 20223 corresponding to each ground terminal elastic sheet 20212.
As shown in fig. 5 and 6, the position of the non-contact bump 20222 corresponds to the position of the two signal terminal domes 20211 in the signal differential pair, where the correspondence refers to the facing in the thickness direction of the sheet-like body 20221. A certain distance is kept between the non-contact bump 20222 and the signal terminal spring 20211. The non-contact bulge 20222 is located further back than the front end of the signal terminal spring 20211, and the specific position of the back needs to satisfy the following conditions: when the male terminal signal pin 303 and the signal terminal spring 20211 are inserted into place, there is a gap between the male terminal signal pin 303 and the non-contact bump 20222 in the front-back direction.
In the present embodiment, both the contact bulge 20223 and the non-contact bulge 20222 are formed by stamping on the complete sheet-like body 20221. After the contact bulge 20223 and the non-contact bulge 20222 are formed by stamping on the sheet-shaped body 20221, as shown in fig. 6, a three-side surrounding male terminal signal pin corresponding region 20224 is formed on the sheet-shaped body 20221, when in use, the male terminal signal pin 303 is inserted into the male terminal signal pin corresponding region 20224, and the contact bulge 20223 and the non-contact bulge 20222 form a three-side surrounding shield for the male terminal signal pin 303, thereby improving the shielding effect.
In order to fix the shielding sheet 2022 to the injection molded body 2021, as shown in fig. 9, a plurality of claws 20225 are formed by stamping on the sheet-shaped body 20221, and the claws 20225 are arranged along the tracks of the ground terminal, especially the claws 20225 must be arranged at the bent positions of the ground terminal. Correspondingly, a through hole is formed in the injection molded body 2021 for the claw 20225 to extend into, and the shielding sheet 2022 and the injection molded body 2021 are fixed together in a clamping manner, so that the assembly is more convenient compared with the injection molding manner.
As shown in fig. 3 and 4, each terminal module 202 is installed in the insulator 201 in a snap-fit manner, specifically, a through hole is formed in the insulator 201, a plastic clip is fixed to the terminal module 202, the terminal module 202 is interference-fitted in the insulator 201 by the plastic clip, and a fixing piece 203 is installed at the rear end of each terminal module 202 in order to prevent the terminal module 202 from shaking in the insulator 201. Specifically, a slot is provided at the top and rear end of each terminal module 202, the front end of the fixing piece 203 is inserted into the slot at the top of the terminal module 202, and the hook at the rear end is inserted into the slot at the rear end of the terminal module 202. The fixing piece 203 can prevent the terminal modules 202 from being shaken during use. In order to improve the quality of high-frequency signal transmission, the terminal traces in any two connected terminal modules 202 are designed to be staggered, and the signal terminal elastic pieces 20211 and the ground terminal elastic pieces 20212 in two adjacent terminal modules 202 in the first direction are arranged in a staggered manner.
As shown in fig. 3 and 4, a positioning plate 204 is fixedly mounted at the mounting end of each terminal module 202, through holes are formed in the positioning plate 204 corresponding to each fisheye 20213, when the terminal module is assembled, the positioning plate 204 is interference-fitted on the insulator 201, each fisheye 20213 penetrates through the through hole, and the part of the positioning plate 204 located between two adjacent through holes can position each fisheye 20213 at a desired position, so that the fisheyes 20213 can be inserted into the printed board in a positioning manner, and the fisheyes 20213 are prevented from being damaged due to dislocation.
As shown in fig. 3 and 4, the straight male connector 300 integrally includes an insulating housing 301, a male ground pin 302 and a male signal pin 303 are fixedly mounted in the insulating housing 301, and the male ground pin 302 and the male signal pin 303 correspond to the ground terminal elastic pieces 20212 and the signal terminal elastic pieces 20211 one to one.
When the straight male connector 300 and the bent female connector 200 are not inserted, a certain gap is formed between the contact bulge 20223 and the ground terminal spring 20212, and a certain gap is formed between the non-contact bulge 20222 and the signal terminal spring 20211 in the thickness direction of the terminal module 202. When the straight male connector 300 and the bent female connector 200 are inserted into each other, the signal grounding pin 302 is inserted between the contact bump 20223 and the grounding terminal spring 20212, and both sides of the signal grounding pin 302 are respectively contacted with the contact bump 20223 and the grounding terminal spring 20212, so as to form a double-sided grounding loop. As shown in fig. 11, after the straight male pin 300 and the bent female pin 200 are inserted and combined relatively, the non-contact bulge 20222 does not contact with the male-end signal pin 303, a certain gap is formed between the two, and a filter capacitor 400 is formed after insertion and combination to play a role in filtering, so as to absorb radiation of the male-end signal pin 303, reduce the intensity of radiation of the signal differential pair to the outside, avoid resonance, and improve crosstalk.
In the present invention, the advantage of forming the filter capacitor 400 at the end of the male signal pin 303 is that the contact position between the male signal pin 303 and the signal terminal spring 20211 is not at the end of the male signal pin 303, and at this time, the end of the male signal pin 303 is equivalent to forming an "antenna", where the intensity of the outward radiation is the greatest, and the filter capacitor 400 formed at this point just can absorb the radiation, reducing the intensity of the outward radiation of the signal.
In fact, after the straight male pin 300 and the bent female pin 200 are inserted, there is a gap between the male-end signal pin 303 and the contact bump 20223, so that a local capacitance is also formed, and the signal differential pair external radiation intensity is further reduced.
In this embodiment, the curved female connector 200 forms the curved mating end of the connector, the straight male connector 300 forms the mating end of the connector, and correspondingly, the male grounding pin 302 of the straight male connector 300 forms the mating grounding contact, and the male signal pin 303 of the straight male connector 300 forms the mating signal contact. Correspondingly, the male signal pin corresponding region 20224 forms a mating signal contact corresponding region.
In this embodiment, the contact bump 20223 is located on one side of the male signal pin 303 during use to form a side filtering protrusion; the non-contact bump 20222 is located at one end of the male signal pin 303 when in use, forming an end filter bump.
In this embodiment, the signal terminal spring 20211 is a signal contact on the angled mating end, and the ground terminal spring 20212 is a ground contact on the angled mating end.
Embodiment 2 of the connector of the present invention:
in embodiment 1, the sheet main body is provided with the claws, and the injection molded body is provided with the through holes, so that the sheet main body and the injection molded body can be clamped. In this embodiment, the positions of the clamping jaws and the through holes can be interchanged, for example, the clamping jaws are pre-buried when the injection molding body is molded.
In other embodiments, the assembling manner between the sheet main body and the injection molded body may be changed according to the actual situation, for example, one-piece casting molding may still be selected.
Embodiment 3 of the connector of the present invention:
in embodiment 1, the filter protrusion is a bulge formed by integral press molding. The shape of the bulge can be changed according to the actual situation, and for example, the bulge can be a regular shape such as a circle, a rectangle, or other irregular shapes.
In other embodiments, the filtering protrusions may be formed in a different manner, such as bumps additionally disposed on the sheet-like body.
Embodiment 4 of the connector of the present invention:
in embodiment 1, the ground contact and the signal contact in the curved insertion end are both spring pieces, the ground contact and the signal contact in the adaptation end are contact pins, and the adaptation end is inserted into the curved insertion end. In this embodiment, the ground contact and the signal contact in the bent insertion end are contact pins to form a male end; and the ground contact and the signal contact in the adapting end are elastic sheets to form a female end.
Embodiment 5 of the connector of the present invention:
in embodiment 1, the filter bumps include both end filter bumps and side filter bumps. In this embodiment, the filtering protrusions may only include end filtering protrusions or side filtering protrusions, and if there is only one type of filtering protrusions, the end filtering protrusions are preferably selected.
The specific embodiment of the terminal module of the invention:
the structure of the terminal module is the same as that of the terminal module in the connector embodiment, and is not described herein again.
The specific embodiment of the shielding sheet of the invention:
the structure of the shielding plate is the same as that of the shielding plate of the terminal module in the connector embodiment, and is not described herein again.
Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A shield sheet characterized in that: the method comprises the following steps:
a blade body (20221) defining an end of the blade body (20221) facing the connector fitting end in use as a front end;
a filter bump provided at the front end of the sheet-like body (20221), the filter bump being arranged on one side of the sheet-like body (20221) so as to protrude in the thickness direction of the sheet-like body (20221);
the filter bumps are spaced apart from mating signal contacts on the mating end of the connector and form a filter capacitor (400) when in use.
2. The shield sheet according to claim 1, characterized in that: the filtering bulges comprise end part filtering bulges, and the end part filtering bulges are used for being matched with the end parts in the front-back direction of the adaptive signal contact to form a filtering capacitor (400).
3. The shield sheet according to claim 2, characterized in that: the filter bulges also comprise side filter bulges, and the side filter bulges are used for being matched with the side parts of the adaptive signal contacts to form a filter capacitor (400);
the side filtering bulges are used for contacting with the adaptive grounding contact of the adaptive end of the connector to realize grounding shielding;
the end part filtering bulges and the two side part filtering bulges are matched to form an adaptive signal contact corresponding area with an opening at the front end, and the adaptive signal contact corresponding area is used for the adaptive signal contact to extend into.
4. The shield sheet according to claim 1, 2 or 3, characterized in that: the filtering bulges are bulges which are integrally formed on the sheet main body (20221) in a stamping mode.
5. The shield sheet according to claim 1, 2 or 3, characterized in that: the sheet main body (20221) is provided with a jaw (20225), and the jaw (20225) is used for extending into a through hole on the one-time injection molded body (2021) so as to enable the shielding sheet (2022) to be clamped on the one-time injection molded body (2021);
or the sheet main body (20221) is provided with a through hole, and the through hole is used for the claw (20225) on the one-time injection molding body (2021) to be matched and penetrated so as to enable the shielding sheet (2022) to be clamped on the one-time injection molding body (2021).
6. A terminal module, comprising:
an injection molded body (2021) comprising signal contacts and ground contacts;
the shielding sheet (2022) is fixedly arranged on one side of the one-time injection molding body (2021);
the method is characterized in that: the shield sheet (2022) includes:
a blade body (20221) defining an end of the blade body (20221) facing the connector fitting end in use as a front end;
a filter bump provided at the front end of the sheet-like body (20221), the filter bump being arranged on one side of the sheet-like body (20221) so as to protrude in the thickness direction of the sheet-like body (20221);
the filter bumps are spaced apart from mating signal contacts on the mating end of the connector and form a filter capacitor (400) when in use.
7. The terminal module of claim 6, wherein: the filtering bulges comprise end part filtering bulges, and the end part filtering bulges are used for being matched with the end parts in the front-back direction of the adaptive signal contact to form a filtering capacitor (400).
8. The terminal module of claim 7, wherein: the filter bulges also comprise side filter bulges, and the side filter bulges are used for being matched with the side parts of the adaptive signal contacts to form a filter capacitor (400);
the side filtering bulges are used for contacting with the adaptive grounding contact of the adaptive end of the connector to realize grounding shielding;
the end part filtering bulges and the two side part filtering bulges are matched to form an adaptive signal contact corresponding area with an opening at the front end, and the adaptive signal contact corresponding area is used for the adaptive signal contact to extend into.
9. The terminal module of claim 8, wherein: the grounding contact is a grounding terminal elastic sheet (20212), and the grounding terminal elastic sheet (20212) is used for being matched with the side filtering bulge to clamp the adaptive grounding contact.
10. The utility model provides a connector, includes curved grafting end and the adaptation end of mutual opposite insertion, and the adaptation end includes adaptation signal contact and adaptation ground contact, and curved grafting end includes insulator (201), and at least two terminal modules (202) have arranged in proper order along the straight line direction on insulator (201), its characterized in that: the terminal module (202) is the terminal module (202) of any one of claims 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372480.6A CN112636090B (en) | 2020-11-30 | 2020-11-30 | Shielding sheet, terminal module using the same and connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011372480.6A CN112636090B (en) | 2020-11-30 | 2020-11-30 | Shielding sheet, terminal module using the same and connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112636090A true CN112636090A (en) | 2021-04-09 |
| CN112636090B CN112636090B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011372480.6A Active CN112636090B (en) | 2020-11-30 | 2020-11-30 | Shielding sheet, terminal module using the same and connector |
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| CN (1) | CN112636090B (en) |
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| CN111525345A (en) * | 2020-04-21 | 2020-08-11 | 中航光电科技股份有限公司 | Contact module and backplane connector using same |
| CN211530274U (en) * | 2020-03-26 | 2020-09-18 | 中航光电科技股份有限公司 | Female-end high-speed connector and signal module thereof |
| CN111952791A (en) * | 2020-08-28 | 2020-11-17 | 四川永贵科技有限公司 | Low-crosstalk shielding frame of backplane connector |
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| US20110256763A1 (en) * | 2010-04-07 | 2011-10-20 | Jan De Geest | Mitigation of crosstalk resonances in interconnects |
| CN109510038A (en) * | 2017-09-14 | 2019-03-22 | 泰连公司 | CA cable assembly with in-line filter module |
| CN208637684U (en) * | 2018-08-14 | 2019-03-22 | 富加宜连接器（东莞）有限公司 | A kind of back panel connector |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112636090B (en) | 2022-04-22 |
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