CN114447719A - Radio frequency coaxial connector - Google Patents
Radio frequency coaxial connector Download PDFInfo
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- CN114447719A CN114447719A CN202210074222.2A CN202210074222A CN114447719A CN 114447719 A CN114447719 A CN 114447719A CN 202210074222 A CN202210074222 A CN 202210074222A CN 114447719 A CN114447719 A CN 114447719A
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- coaxial connector
- radio frequency
- shielding sleeve
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- 239000002184 metal Substances 0.000 claims abstract description 158
- 239000012212 insulator Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 30
- 230000008569 process Effects 0.000 abstract description 26
- 230000009286 beneficial effect Effects 0.000 description 19
- 238000005192 partition Methods 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Classifications
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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
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
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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
- H01R13/02—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
- H01R13/40—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
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The invention relates to a radio frequency coaxial connector. The radio frequency coaxial connector comprises a metal grounding seat and a shielding sleeve, wherein an insulator and a contact element are assembled in the shielding sleeve, the shielding sleeve comprises a rotation stopping matching section and a shielding section, the contact element is inserted into the shielding section, the rotation stopping matching section is provided with a wing plate exceeding the peripheral surface of the shielding section, the shielding sleeve is in circumferential rotation stopping matching with the metal grounding seat through the wing plate, and is in blocking matching with the metal grounding seat through the front end surface of the wing plate; the shielding sleeve is tightly matched with the metal grounding seat through the protruding part arranged on the wing plate, and/or the radio frequency coaxial connector comprises the stopping piece in plug fit with the metal grounding seat, the shielding sleeve is in stop fit with the stopping piece through the rear end face of the wing plate, positioning assembly of the shielding sleeve in the metal stopping piece is achieved, a riveting tool can be avoided being adopted in the assembly process, the assembly process of the radio frequency coaxial connector is facilitated to be simplified, and the assembly efficiency of the radio frequency coaxial connector is improved.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a radio frequency coaxial connector.
Background
The Mini type FAKRA connector is a well-known automotive radio frequency coaxial connector for transmitting radio frequency signals. The existing Mini type FAKRA connector comprises a plastic shell, a metal grounding seat and a contact member fixed in the metal grounding seat by a plurality of plug-ins, wherein the contact member comprises a shielding sleeve, an insulator and a contact element, the insulator is positioned between the shielding sleeve and the contact element, and the shielding sleeve and the contact element are coaxially arranged.
The shielding sleeve and the metal grounding seat in the prior art are fixed by flanging riveting or spot pressing riveting. In order to achieve this, the corresponding part must be crimped or swaged with a riveting tool after the shield sleeve and the metal grounding base are assembled in place. The operation process of flanging or spot pressing the corresponding parts of the shielding sleeve and the metal grounding seat by riveting in the connector assembling process is complicated, the connector assembling time is increased, and the assembling efficiency of the connector is reduced.
Disclosure of Invention
The invention aims to provide a radio frequency coaxial connector, which aims to solve the technical problems that the radio frequency coaxial connector in the prior art is complicated in assembling process and inconvenient to disassemble and maintain in the later period.
The radio frequency coaxial connector adopts the following technical scheme:
the radio frequency coaxial connector comprises a metal grounding seat and a shielding sleeve fixedly arranged on the metal grounding seat, wherein an insulator and a contact element are assembled in the shielding sleeve, the insulator is positioned between the shielding sleeve and the contact element, the shielding sleeve comprises a shielding section positioned on the front side and a rotation stopping matching section positioned on the rear side, the contact element is inserted into the shielding section, the rotation stopping matching section is provided with a wing plate which is arranged beyond the peripheral surface of the shielding section, the shielding sleeve is in rotation stopping matching with the metal grounding seat in the circumferential direction through the wing plate and is in stopping matching with the metal grounding seat through the front end surface of the wing plate; the wing plates are provided with convex parts, and the shielding sleeve is tightly matched with the metal grounding seat through the convex parts on the wing plates so as to realize the fixed installation of the shielding sleeve on the metal grounding seat; and/or the radio frequency coaxial connector comprises a stopping piece, the stopping piece and the metal grounding seat are inserted and assembled in the direction vertical to the front and back direction, and the shielding sleeve is in stopping fit with the stopping piece through the rear end face of the wing plate.
The invention has the beneficial effects that: according to the radio frequency coaxial connector, the front side of the shielding sleeve is in stop fit with the metal grounding seat through the front end face of the wing plate, and the shielding sleeve is fixedly mounted on the metal base through the tight fit of the protruding part and the metal grounding seat, or the front side of the shielding sleeve is in stop fit with the metal grounding seat through the front end face of the wing plate, and the rear side of the shielding sleeve is in stop fit with the stop piece through the rear end face of the wing plate, so that the positioning assembly of the shielding sleeve in the metal grounding seat is realized, a riveting tool can be avoided being adopted in the assembly process, the assembly process of the radio frequency coaxial connector is facilitated to be simplified, and the assembly efficiency of the radio frequency coaxial connector is improved.
Further, the inner peripheral surface of the shielding section is an equal diameter surface in the axial direction.
The beneficial effects are as follows: the structure is beneficial to enabling the distance between the shielding sleeve and the contact piece to be uniformly distributed in the extending direction of the contact piece, reducing the change of characteristic impedance, reducing the loss of the radio frequency coaxial connector in the transmission process of high-frequency signals and improving the transmission performance of the radio frequency coaxial connector.
Further, the contact is a bent contact, the contact comprising a first portion on the front side and a second portion on the rear side, the wings being arranged in pairs, the two wings arranged in pairs being located on either side of the axis of the shielding sleeve, the second portion passing between the two wings.
The beneficial effects are as follows: the arrangement of the wing plate pairs enables the shielding sleeve to be stressed in a balanced manner in the arrangement direction of the wing plate pairs.
Furthermore, the wing plate is provided with a protrusion, the protrusion forms the protruding part, and the shielding sleeve is in interference fit with the metal grounding seat through the protrusion on the wing plate.
The beneficial effects are as follows: the bulge in interference fit with the metal grounding seat can be formed by stamping at the position of the wing plate before the shielding sleeve is rolled and formed, and the processing of the bulge on the wing plate is facilitated. Meanwhile, the protrusions can increase the conductive contact area between the shielding sleeve and the metal grounding seat, and the shielding stability of the shielding sleeve is improved.
Further, the protrusion is arranged on the side of the wing plate facing away from the other wing plate, so that the protrusions on the two wing plates are opposite to each other.
The beneficial effects are as follows: the structure that the bulges on the two wing plates are arranged in a back-to-back manner is beneficial to simplifying the structure of the metal grounding seat in interference fit with the wing plates, and the metal grounding seat is convenient to process and manufacture.
Further, the radial section of the rotation stopping matching section is U-shaped, the rotation stopping matching section comprises a semicircular part and two parallel parts, and the two parallel parts form the wing plates.
The beneficial effects are as follows: the structure is convenient for processing and manufacturing the shielding sleeve.
Furthermore, the contact element is a bent contact element, the contact element comprises a first part positioned on the front side and a second part positioned on the rear side, the stop element is a metal stop element, and the metal stop element and the metal grounding seat enclose a shielding passage for the second part of the contact element to pass through.
The beneficial effects are as follows: the structure arrangement is beneficial to reducing the loss in the process of transmitting high-frequency signals and improving the transmission performance of the radio frequency coaxial connector.
Furthermore, the shielding passages are provided with at least two shielding passages, and the shielding passages correspond to the contact pieces one by one.
The beneficial effects are as follows: the structure can reduce the signal interference of two adjacent contact pieces in the signal transmission process and reduce the loss in the signal transmission process.
Furthermore, one of the metal stop piece and the metal grounding seat is provided with a shielding groove, the other one of the metal stop piece and the metal grounding seat is provided with an inserting plate, and the metal stop piece and the metal grounding seat are in insertion fit through the shielding groove and the inserting plate. The shielding groove is arranged on the channel wall between two adjacent shielding channels.
The beneficial effects are as follows: the structure helps to reduce the machining precision requirement of the metal stop piece and the metal grounding seat at the assembling position, and can also enable the two adjacent shielding channels to be communicated through a bending gap, reduce the electromagnetic interference between the two adjacent shielding channels and be beneficial to realizing electromagnetic shielding.
Furthermore, a stopper grounding pin used for being matched with the printed board in an inserting mode is arranged on the metal stopper.
The beneficial effects are as follows: the grounding shielding structure can realize the grounding shielding of the metal blocking piece through the grounding pin of the blocking piece when the metal blocking piece is in poor contact with the metal grounding seat.
Drawings
Fig. 1 is a schematic view of an assembled and disassembled structure of the coaxial rf connector of the present invention in embodiment 1;
FIG. 2 is a schematic view of the construction of the short shielding sleeve of FIG. 1;
FIG. 3 is a schematic structural diagram of the metal grounding block in FIG. 1;
FIG. 4 is a schematic view of the metal ground socket shown in FIG. 1 from another perspective;
fig. 5 is a schematic structural diagram of a position relationship between a shielding sleeve and a metal grounding seat in the coaxial rf connector according to embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a position relationship between the shielding sleeve and the metal grounding seat and the metal stopper of the coaxial rf connector according to embodiment 1 of the present invention;
FIG. 7 is a schematic view of the metal stop of FIG. 1;
in the figure:
1. a plastic housing; 2. a metal ground pad; 3. a metal stopper; 4. a long shielding sleeve; 5. a short shielding sleeve; 6. a long insulator; 7. a short insulator; 8. a long contact; 9. a short contact; 10. a long mounting hole; 11. a short mounting hole; 12. a first portion; 13. a second portion; 14. a shielding section; 15. a rotation stopping matching section; 16. a wing plate; 17. a protrusion; 18. a shielding groove; 19. a grounding pin of the grounding seat; 20. a stopper grounding pin; 21. a front stop surface; 22. a backstop surface; 23. a slot; 24. a ground base separator; 25. a rib is protruded; 26. a stop partition; 27. a right-angle groove; 28. the stop piece is raised; 29. interference fit surfaces; 30. and (4) a boss.
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 embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode. 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, which may be present, 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, terms such as "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, an element defined by the phrase "comprising an … …," or the like, does not exclude the inclusion of such elements as a process, method, or the like.
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.
The specific embodiment 1 of the radio frequency coaxial connector provided by the invention:
as shown in fig. 1, the rf coaxial connector provided in this embodiment is a socket connector in a Mini type FAKRA connector, and includes a plastic shell 1, a metal ground socket 2 and a contact member inserted and fixed in the metal ground socket 2, wherein the metal ground socket 2 is installed in the plastic shell 1, and the contact member is a coaxial contact member. Four mounting holes are formed in a metal grounding seat 2 in the radio frequency coaxial connector, the four mounting holes are respectively located at four corners of a rectangle, four contact members are arranged, the four contact members are respectively mounted in the four mounting holes, every two of the four contact members are in one group, a longer group in the front-back insertion direction is a long contact member, a shorter group is a short contact member, and the long contact member is located on the upper side of the short contact member in the up-down direction. The long contact member comprises a long shielding sleeve 4, a long insulator 6 and a long contact 8, and the short contact member comprises a short shielding sleeve 5, a short insulator 7 and a short contact 9. Except for different length and size, all parts in the two groups of contact components have the same structure. The structure of only one of the contact members will be described in this embodiment.
As shown in fig. 1 and 2, in the contact member, the insulator is interference-fitted with the shielding sleeve through the convex rib provided on the outer peripheral surface thereof, and the insulator is fixed between the shielding sleeve and the contact, and the shielding sleeve plays a role of signal shielding in the process of signal transmission. The contact is a 90 DEG bent contact, and includes a first portion 12 extending in the front-rear direction and a second portion 13 extending in the up-down direction, the second portion 13 being located on the rear side of the first portion 12. The shielding sleeve is formed by rolling a metal strip, and a rolling seam is formed on the outer peripheral surface of the shielding sleeve. The shielding sleeve comprises two sections, a shielding section 14 on the front side and a rotation stop mating section 15 on the rear side, into which shielding section 14 the first part 12 of the contact is inserted. The wall thickness of the metal strip in the front and back direction is uniform, so that the inner circumferential surface and the outer circumferential surface of the formed shielding section 14 are equal-diameter surfaces in the axial direction, the distance between the shielding section 14 and the contact piece is uniformly distributed in the front and back direction, the characteristic impedance change of the radio frequency coaxial connector at the position of the shielding section 14 is reduced, the loss of the radio frequency coaxial connector in the high-frequency signal transmission process is reduced, and the transmission performance of the radio frequency coaxial connector is improved.
As shown in fig. 2, the rotation stop fitting section 15 has a wing 16 disposed beyond the outer peripheral surface of the shielding section 14. Specifically, the radial cross section of the rotation stopping matching section 15 is U-shaped, so that the rotation stopping matching section 15 is integrally U-shaped, the rotation stopping matching section 15 includes a semicircular part and two parallel parts, the two parallel parts are respectively located on two sides of the axis of the shielding section 14 to form two wing plates 16 arranged in pairs, each wing plate 16 has a front end surface and a rear end surface, the shielding sleeve is inserted into the mounting hole of the metal grounding seat 2 from back to front, the metal grounding seat 2 is provided with a front stopping surface 21 facing back, and in the assembly process of the shielding sleeve, the front end surfaces of the wing plates 16 are in stopping fit with the front stopping surface 21 on the metal grounding seat 2 to limit the shielding sleeve to move forward relative to the metal grounding seat 2.
The wing plate 16 is provided with a convex part, and the shielding sleeve is tightly matched with the metal grounding seat 2 through the convex part on the wing plate 16 so as to realize the fixed installation of the shielding sleeve on the metal grounding seat 2. Specifically, as shown in fig. 1, 2 and 5, each of the flanges 16 is provided with a protrusion 17 protruding away from the other flange 16 on the surface opposite to the other flange 16, the protrusion 17 is formed by punching a metal strip before the shielding sleeve is rolled, and the protrusion 17 is a protruding portion on the flange 16. As shown in fig. 3, 4 and 5, the metal grounding base 2 has an interference fit surface 29 for interference fitting with the protrusion 17 on the wing plate 16, and when the shielding sleeve is inserted into the metal grounding base 2, the protrusion 17 on the wing plate 16 is tightly fitted with the interference fit surface 29, so that the shielding sleeve can be limited from rotating in the circumferential direction in the metal grounding base 2, and the shielding sleeve can be fixedly mounted on the metal grounding base 2.
In addition, as shown in fig. 1, 6 and 7, the rf coaxial connector further includes a stopper made of a metal material to form a metal stopper 3. The metal grounding seat 2 is provided with an inserting slot 23, the inserting slot 23 is used for inserting the metal stopping piece 3 into the metal grounding seat 2 from bottom to top, the metal stopping piece 3 is provided with a rear stopping surface 22 facing to the front side, and the rear stopping surface 22 is in stopping fit with the rear end surface of the wing plate 16 on the rotation stopping matching section 15 after the shielding sleeve is inserted into the metal grounding seat 2 so as to limit the backward movement of the shielding sleeve and ensure the fixed installation of the shielding sleeve on the metal grounding seat 2.
In the present embodiment, as shown in fig. 3, the mounting hole of the metal ground socket 2 that is inserted into the long contact member is defined as a long mounting hole 10, the mounting hole that is inserted into the short contact member 9 is defined as a short mounting hole 11, and the axial length of the long mounting hole 10 is greater than the axial length of the short mounting hole 11. As shown in fig. 1 and 6, the metal ground socket 2 is a shell structure, the metal ground socket 2 is surrounded by a left side plate, a right side plate, a front side plate and an upper side plate, the mounting hole is disposed on the front side plate, and the long mounting hole 10 and the front side orifice end surface of the short mounting hole 11 are in the same plane, so that after each shielding sleeve is assembled in the mounting hole, the front end surfaces of the shielding sleeves are flush, the long mounting hole 10 is located on the upper side of the short mounting hole 11, the rear side orifice end surface of the long mounting hole 10 is located on the rear side of the rear side orifice end surface of the short mounting hole 11, so as to form a step on the rear side surface of the front side plate of the metal ground socket 2, and the orifice end surface on the rear side of each mounting hole, that is, the rear side surface of the front side plate, forms a front stop surface 21 for stop-matching with the front end surface of the upper wing plate 16 of the corresponding shielding sleeve.
In this embodiment, as shown in fig. 3, a ground seat partition plate 24 is disposed between the left side plate and the right side plate on the metal ground seat 2, the ground seat partition plate 24 extends in the front-rear direction, the ground seat partition plate 24 is located between the two adjacent long mounting holes 10 and also located between the two adjacent short mounting holes 11, and in the process of assembling the shielding sleeve, the two side surfaces of the ground seat partition plate 24 and the interference fit surfaces 29 on the left side plate and the right side plate on the metal ground seat 2 are all used for interference fit with the protrusions 17 on the upper wing plate 16 of the shielding sleeve, so as to limit the circumferential rotation of the shielding sleeve in the metal ground seat 2.
In addition, as shown in fig. 3, the inner hole wall of each mounting hole is provided with a convex rib 25 extending axially, and in the process of inserting and matching the shielding sleeve and the mounting hole, the convex rib 25 is in interference fit with the shielding sleeve, which is helpful for realizing the fixed assembly of the shielding sleeve in the metal grounding seat 2.
In this embodiment, as shown in fig. 3, 4, 5 and 7, a right-protruding boss 30 is provided on the inner side surface of the left side plate of the metal grounding seat 2, a left-protruding boss 30 is provided on the inner side surface of the corresponding right side plate, two bosses 30 are provided on each side plate, and the two bosses 30 are arranged at intervals in the vertical direction, after the shielding sleeve is installed in the metal grounding seat 2, the upper side boss is positioned below the upper wing plate 16 of the long shielding sleeve, the lower side boss is positioned below the upper wing plate 16 of the short shielding sleeve, and the side of the boss 30 facing the ground seat diaphragm 24 is flush with the side of the corresponding wing 16 facing the ground seat diaphragm 24, helps to reduce the variation in the characteristic impedance of the rf coaxial connector at the location of the second portion 13 of the contact, to increase the continuity of the shielding sleeve with the metal ground socket 2 to the downwardly extending second portion 13 of the contact.
As shown in fig. 4 and 7, the insertion grooves 23 on the metal ground socket 2 are disposed on the lower side bosses 30 on the left and right side plates, two insertion grooves 23 are respectively disposed on the lower side bosses 30 on the left and right side plates, the insertion grooves 23 on the two side plates are correspondingly arranged in the front-rear direction, and the insertion grooves 23 have downward notches. The horizontal section of the metal stopper 3 is in a shape like the Chinese character 'tu', the metal stopper 3 comprises two parallel plates which are arranged at intervals in the front-back direction and stopper partition plates 26 which are arranged in the front-back direction in an extending manner, the front side surfaces of the two parallel plates form a rear stopper surface 22 which is in stopper fit with the rear end surface of the rotation stopping fit section 15, the two parallel plates in the front-back direction are in plug fit with the slots 23 on the metal grounding seat 2, the left side surface and the right side surface of the two parallel plates are respectively provided with a stopper bulge 28, and the stopper bulges 28 are in interference fit with the corresponding slot walls of the slots 23, so that the metal stopper 3 and the metal grounding seat 2 are tightly fitted to realize relative fixation.
As shown in fig. 3, 4, 5, 6 and 7, the metal stopper 3 is inserted into and engaged with the metal grounding seat 2 to define four shielding passages through which the second portions 13 of the contacts respectively pass. The stop piece partition plate 26 is positioned between two adjacent shielding channels in the left-right direction, the stop piece partition plate 26 is provided with a shielding groove 18 with an upward opening, in the process that the metal stop piece 3 is in plug fit with the metal grounding seat 2, the shielding groove 18 is in plug fit with the grounding seat partition plate 24, and the grounding seat partition plate 24 forms an inserting plate. After the shielding sleeve is installed in the metal grounding seat 2 and the metal stopper 3 and the metal grounding seat 2 are inserted in place, the left and right side surfaces of the stopper partition 26 on the metal stopper 3 are respectively flush with the side surfaces of the corresponding upper wing plates 16 of the shielding sleeve in the up-down direction, which is beneficial to reducing the characteristic impedance change of the radio frequency coaxial connector at the position of the second part 13 of the contact element, so as to increase the shielding continuity of the shielding sleeve and the metal grounding seat 2 to the second part 13 extending downwards in the contact element.
In this embodiment, as shown in fig. 3, 4, 6 and 7, the lower portion of the end surface of the rear side hole of the long mounting hole 10 of the metal grounding seat 2 is transited to the upper portion of the end surface of the rear side hole of the short mounting hole 11 through the right-angle groove 27, and the parallel plate at the rear side is inserted and matched with the right-angle groove 27 in the process of inserting the metal grounding seat 2 and the metal stopper 3. The structure arrangement can avoid that the metal stop piece 3 and the metal grounding seat 2 cannot be ideally matched with each other in a plane close to the plane between two adjacent shielding channels due to tolerance in machining, and is beneficial to reducing the machining precision requirement of the metal stop piece 3 and the metal grounding seat 2 at the insertion matching position; the structure is beneficial to electromagnetic shielding, most of the undesired interference electromagnetic waves are limited by the wavelength of the interference electromagnetic waves, the interference electromagnetic waves are blocked by the metal stopping piece 3 and the metal grounding seat 2 in the zigzag gap and cannot reach the other shielding channel, so that effective electromagnetic interference cannot be caused, only a very small amount of electromagnetic waves with ultra-short wavelengths can cause electromagnetic interference through the zigzag gap, and the radio frequency coaxial connector in the embodiment can obtain better signal quality by utilizing the structural advantage.
As shown in fig. 4 and 7, the four corners of the lower end surface of the metal grounding base 2 are provided with grounding base grounding pins 19 for connecting with a printed board, so as to effectively realize grounding shielding; a stopper grounding pin 20 is arranged on the lower end surface of the intersection position of the front parallel plate of the metal stopper 3 and the stopper partition 26, so that when the metal stopper 3 and the metal grounding seat 2 are in poor contact, the grounding shielding of the metal stopper 3 is realized through the stopper grounding pin 20.
In this embodiment, as shown in fig. 1, in the process of assembling the rf coaxial connector, the metal grounding seat 2 is assembled in the plastic housing 1, the pre-assembled contact member is inserted into the metal grounding seat 2 from the back to the front, the front side surfaces of the shielding sleeve wings 16 are engaged with the front stop surfaces 21 of the metal grounding seat 2 in a stop manner, the protrusions 17 on the wings 16 are engaged with the metal grounding seat 2 in an interference manner, then the metal stopping piece 3 is inserted and matched with the metal grounding seat 2 from bottom to top, and the stopping piece bulge 28 on the metal stopping piece 3 is in interference fit with the corresponding groove wall of the metal stopping piece 3, so as to realize the assembly of the whole radio frequency coaxial connector, the whole assembly process does not need to use an assembly tool, the assembly of the radio frequency coaxial connector is convenient, the assembly efficiency of the radio frequency coaxial connector is improved, in the subsequent use process of the radio frequency coaxial connector, the radio frequency coaxial connector is convenient to disassemble and maintain; in addition, the inner circumferential surface of the shielding section 14 of the shielding sleeve in the radio frequency coaxial connector in the embodiment is of an equal-diameter structure in the axial direction, which is beneficial to uniformly arranging the distance between the shielding sleeve and the contact element in the extension direction of the contact element, reducing the loss of the radio frequency coaxial connector in the transmission process of high-frequency signals and improving the transmission performance of the radio frequency coaxial connector; and four shielding channels are formed by inserting the metal grounding seat 2 and the metal blocking piece, and two adjacent shielding channels are communicated through a bending gap, so that effective electromagnetic interference can be formed between the two adjacent shielding channels, and the realization of electromagnetic shielding is facilitated.
The radio frequency coaxial connector in this embodiment has both realized the diameter uniformity of shielding section on the shielding sleeve, and it is fixed to satisfy the shielding sleeve again, solves the secondary riveting and leads to the loaded down with trivial details technical problem of operation process to make the radio frequency coaxial connector that this kind of structure set up have better structural stability, have radio frequency high speed performance advantage and price advantage concurrently.
the difference from the specific example 1 is that: the inner peripheral surface of the shielding section in the shielding sleeve is provided with a ring protrusion, the corresponding insulator is provided with a ring groove, and the ring protrusion is positioned in the ring groove in the rolling process of the shielding sleeve so as to realize the axial positioning of the insulator in the shielding sleeve.
the difference from the specific example 1 is that: the pterygoid lamina is equipped with one, and the pterygoid lamina is located one side that shielding sleeve rolled system seam, and the both sides of pterygoid lamina all are equipped with the arch, all are equipped with the slot on the curb plate about corresponding metal ground connection seat, at the in-process pterygoid lamina and the slot cartridge of shielding sleeve and metal ground connection seat assembly, through two archs on the pterygoid lamina and the groove wall interference fit of slot, the restriction shielding sleeve is circumferential direction rotation in metal ground connection seat.
the difference from the specific example 1 is that: the two opposite side surfaces of the wing plates arranged in pairs are respectively provided with a contact elastic arm which is arranged oppositely to the other wing plate in a protruding mode, the contact elastic arms are formed by stamping a metal belt, correspondingly, grooves matched with the contact elastic arms in a clamping mode are formed in the left side plate and the right side plate of the metal grounding seat, the contact elastic arms are tightly pressed on the bottom wall of the grooves, the shielding sleeve is fixedly installed on the metal grounding seat, the rear side groove wall of each groove is in stop fit with the rear end face of each contact elastic arm, the shielding sleeve is limited from being separated from the metal grounding seat, the upper side groove wall and the lower side groove wall of each groove are in circumferential stop fit with the contact elastic arms, and the shielding sleeve is limited from rotating in the metal grounding seat in the circumferential direction.
In this embodiment, the radio frequency coaxial connector is not provided with the metal stopper, so that the shielding sleeve can be mounted and fixed in the metal grounding seat, and other mounting tools are not required in the assembly process of the shielding sleeve and the metal grounding seat, which is beneficial to improving the assembly efficiency of the radio frequency coaxial connector.
the difference from the specific example 1 is that: the wing plates are not provided with the protruding parts, and the shielding sleeve is limited to rotate circumferentially relative to the metal grounding seat through the stop matching of the wing plates and the left and right side plates of the metal grounding seat as well as the stop matching of the wing plates and the partition plate of the grounding seat.
Embodiment 6 of the radio frequency coaxial connector of the present invention:
the differences from the specific example 1 are: two archs on the pterygoid lamina are arranged in opposite directions, and the corresponding position department that corresponds between two archs on metal ground connection sets up the boss, the left and right sides face of boss be used for with two protruding interference fit of pterygoid lamina, the relative metal ground connection of restriction shielding sleeve rotates in week.
the difference from the specific example 1 is that: the rotation stopping matching section comprises an arc-shaped part and two parallel parts extending towards the outer side of the shielding section, the corresponding central angle of the arc-shaped part is larger than 180 degrees, and the two parallel parts form a wing plate.
Embodiment 8 of the radio frequency coaxial connector of the present invention:
the difference from the specific example 1 is that: the stop piece is made of plastic materials, and the stop piece is not provided with a stop piece grounding pin, so that only two adjacent contact pieces on the shielding section have shielding effect.
the difference from the specific example 1 is that: the grounding seat partition plate is provided with a shielding groove, and the stop part partition plate forms an inserting plate which is inserted and matched with the shielding groove.
the difference from the specific example 1 is that: two contact components in the radio frequency coaxial connector are arranged, and the shielding passages formed after the metal stop piece and the metal grounding seat are inserted and matched are in one-to-one correspondence with the contact pieces. In other embodiments, three, five or more than six contact members and shielding passages may be provided.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and 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 and equivalents can be made in the technical solutions described in the foregoing embodiments without inventive effort, or some technical features of the present invention may be substituted 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 radio frequency coaxial connector comprises a metal grounding seat (2) and a shielding sleeve fixedly installed on the metal grounding seat (2), wherein an insulator and a contact element are assembled in the shielding sleeve, and the insulator is positioned between the shielding sleeve and the contact element, and the radio frequency coaxial connector is characterized in that the shielding sleeve comprises a shielding section (14) positioned on the front side and a rotation stopping matching section (15) positioned on the rear side, the contact element is inserted into the shielding section (14), the rotation stopping matching section (15) is provided with a wing plate (16) which is arranged beyond the outer peripheral surface of the shielding section (14), the shielding sleeve is in rotation stopping matching with the metal grounding seat (2) in the circumferential direction through the wing plate (16), and is in blocking matching with the metal grounding seat (2) through the front end surface of the wing plate (16);
the wing plate (16) is provided with a convex part, the shielding sleeve is tightly matched with the metal grounding seat (2) through the convex part on the wing plate (16) so as to realize the fixed installation of the shielding sleeve on the metal grounding seat (2), and/or the radio frequency coaxial connector comprises a stopping piece, the stopping piece is inserted and assembled with the metal grounding seat (2) in the vertical front-back direction, and the shielding sleeve is in stopping matching with the stopping piece through the rear end face of the wing plate (16).
2. The rf coaxial connector of claim 1, wherein an inner circumferential surface of the shield segment (14) is an equal diameter surface in an axial direction.
3. Radio frequency coaxial connector according to claim 1 or 2, characterized in that the contact is a bent contact comprising a first portion (12) on the front side and a second portion (13) on the rear side, said wings (16) being arranged in pairs, the two wings (16) arranged in pairs being located on either side of the shielding sleeve axis, the second portion (13) passing between the two wings (16).
4. A radio frequency coaxial connector according to claim 3, wherein the wings (16) are provided with protrusions (17), the protrusions (17) forming the protruding parts, the shielding sleeve being interference fitted with the metal ground seat (2) by means of the protrusions (17) on the wings (16).
5. A radio frequency coaxial connector according to claim 4, characterized in that the protrusion (17) is arranged on the side of the wings (16) facing away from the other wing (16) such that the protrusions (17) on the two wings (16) are facing away from each other.
6. Radio frequency coaxial connector according to claim 1 or 2, characterized in that the radial section of the anti-rotation fitting section (15) is U-shaped, the anti-rotation fitting section (15) comprising a semicircular portion and two parallel portions forming the wings (16).
7. The rf coaxial connector according to claim 1 or 2, characterized in that the contact is a bent contact, the contact comprising a first portion (12) at the front side and a second portion (13) at the rear side, the stop being a metal stop (3), the metal stop (3) and the metal ground socket (2) enclosing a shielding passage for the second portion (13) of the contact to pass through.
8. The radio frequency coaxial connector of claim 7, wherein the shield channels are provided in at least two and in one-to-one correspondence with the contacts.
9. The radio frequency coaxial connector according to claim 7, wherein one of the metal stop member (3) and the metal grounding seat (2) is provided with a shielding slot (18), and the other one is provided with an inserting plate, the metal stop member (3) and the metal grounding seat (2) are inserted and matched through the shielding slot (18) and the inserting plate, and the shielding slot (18) is arranged on a channel wall between two adjacent shielding channels.
10. The radio frequency coaxial connector according to claim 7, wherein the metal stopper (3) is provided with a stopper grounding pin (20) for insertion fitting with a printed board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074222.2A CN114447719B (en) | 2022-01-21 | 2022-01-21 | Radio frequency coaxial connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210074222.2A CN114447719B (en) | 2022-01-21 | 2022-01-21 | Radio frequency coaxial connector |
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| CN114447719A true CN114447719A (en) | 2022-05-06 |
| CN114447719B CN114447719B (en) | 2024-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210074222.2A Active CN114447719B (en) | 2022-01-21 | 2022-01-21 | Radio frequency coaxial connector |
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| Publication number | Publication date |
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| CN114447719B (en) | 2024-07-12 |
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