CN110165450A - For conduct grade signal wave big tolerance plate to plate co-axial joint system - Google Patents
For conduct grade signal wave big tolerance plate to plate co-axial joint system Download PDFInfo
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- CN110165450A CN110165450A CN201910486374.1A CN201910486374A CN110165450A CN 110165450 A CN110165450 A CN 110165450A CN 201910486374 A CN201910486374 A CN 201910486374A CN 110165450 A CN110165450 A CN 110165450A
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- intussusceptum
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- 238000003780 insertion Methods 0.000 claims abstract description 118
- 230000037431 insertion Effects 0.000 claims abstract description 118
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 21
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 18
- 238000005457 optimization Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 229920000106 Liquid crystal polymer Polymers 0.000 description 4
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- 230000019491 signal transduction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
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- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/73—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures connecting to other rigid printed circuits or like structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/91—Coupling devices allowing relative movement between coupling parts, e.g. floating or self aligning
-
- 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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
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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
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- 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
-
- 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
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
The plate that the present invention provides a kind of for conducting the big tolerance of grade signal wave is to plate co-axial joint system, including Male end connector and terminative connector, Male end connector includes first shell and connection needle assemblies, terminative connector includes second shell and connecting seat assembly, first shell contains interconnecting piece and insertion section, one end of interconnecting piece is connected and is connected to one end of insertion section, interface channel is formed inside interconnecting piece, connection needle assemblies contain connection needle, one end of connection needle is protruded into interface channel, fixation connecting rod for having with one piece of circuit board is connected, second shell contains intussusceptum and fixed part, one end of intussusceptum is connected and is connected to one end of fixed part, intussusceptum is set in outside insertion section, the end face of the fixed part other end is fixed on another piece of circuit board, connecting seat assembly contains attachment base, connection Seat is equipped with the insertion hole to match with the other end for connecting needle.
Description
Technical field
The invention belongs to mechano-electronic fields, and in particular to a kind of for conducting the plate pair of the big tolerance of grade signal wave
Plate co-axial joint system.
Background technique
With the continuous development of communication industry, network will step into the 5G epoch.The 5G epoch need high-frequency apparatus, in number
High speed network is provided in the case where intensive.And plate is that letter is carried out between circuit board as radio frequency connecting component to plate radio frequency connector
The critical component of number wave conduction.
Bayonet coupling is respectively set for the both ends in connector in the form that the plate applied at present uses the connector of plate
Mouthful and slide-in type connector, with must carry out signal wave conduction circuit board, wait connect on circuit board preset cassette attachment base and
Slide-in type attachment base respectively corresponds cooperation to realize that the signal wave between two pieces of circuit boards conducts.
But there is following deficiencies for the application of such connector: 1. between circuit board interface due to being inevitably present
Radial error, therefore during being flexibly connected using connector, the inner conductor of connector and the interior of the corresponding interface are led
Body, which usually cannot keep coaxial abutting matching, causes its axial cross section size impedance matching not influence connector in turn completely
Signal wave conductive mass can only realize the axial floating tolerance of axial direction ± 0.25.2. pre- on such connector and two pieces of circuit boards
If corresponding interface structure constitute three-stage linked system, and connector must be kept due to electrical, mechanical performance limitation
Certain length, so that the minimum value for the two pieces of circuit board spacing that must carry out signal transduction is larger.
Summary of the invention
It is being carried out the present invention be directed to the above problem, and it is an object of the present invention to provide a kind of for conducting grade signal wave
For the plate of big tolerance to plate co-axial joint system, the connection needle of Male end connector and the attachment base of terminative connector can be in axial directions
It remains coaxial in moving process and is close to matching, for carrying out signal wave conduction between two pieces of circuit boards.
To achieve the above object, present invention employs following technical solutions:
It is used to conduct the plate of the big tolerance of grade signal wave the present invention provides a kind to plate co-axial joint system, tool
There is such feature, comprising: Male end connector comprising first shell and is arranged in the intracorporal connection needle assemblies of first shell；With
And terminative connector, comprising the second shell being flexibly connected with first shell and it is arranged in the intracorporal attachment base group of second shell
Part, wherein first shell is straight, and containing interconnecting piece and insertion section, one end of interconnecting piece is connected with one end of insertion section
And be connected to, interface channel is formed inside interconnecting piece, interface channel is located at the end face of the other end of interconnecting piece in horn-like and big mouth
On, connection needle assemblies contain the connection needle along the setting of first shell length direction, the fixed company for having with one piece of circuit board
Bar is connected, and second shell is straight, and containing intussusceptum and fixed part, one end of intussusceptum is connected with one end of fixed part
And be connected to, intussusceptum is set in outside insertion section, and the end face of the fixed part other end is fixed on another piece of circuit board, connection
Holder assembly contains the attachment base along the setting of second shell length direction, and one end of attachment base is equipped with and the other end phase that connect needle
The insertion hole matched is inserted into axis of the duct in hole along the insertion hole and is extended, connection needle and the duct coaxial arrangement for being inserted into hole, connection
The other end of needle, which is plugged on, to be inserted in the hole and can move in the duct in insertion hole.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have the feature that, further includes: retaining spring is set in the outside of intussusceptum, the end face and insertion section of interconnecting piece one end
The outer surface of one end forms First terrace, and the outer surface of intussusceptum one end and the end face of fixed part one end form second step
Face, First terrace and second step face are arranged in parallel, and retaining spring is between First terrace and second step face.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, the male end anticreep that the outer surface of insertion section is equipped with protrusion has contact with, the interior table of the intussusceptum other end
The female end anticreep that face edge is equipped with protrusion has contact with, and male end anticreep, which has contact with to have contact with female end anticreep, to be correspondingly arranged, and male end anticreep has contact with
Have contact with the insertion section for enabling to socket with female end anticreep and intussusceptum forms interference fit.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, the both ends end face that male end anticreep has contact with is respectively formed insertion relative to insertion section outer surface and falls
Edged surface and insertion step surface, the both ends end face that female end anticreep has contact with is respectively formed relative to intussusceptum other end inner surface and is inserted in down
Edged surface and it is inserted in step surface, the angle for being inserted into fillet surface and insertion section outer surface is θ, is inserted in fillet surface and the intussusceptum other end
The angle on surface is θ, and θ is 30-45 °.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, connection needle assemblies also contain male end dielectric, and connecting seat assembly also contains female end insulation and is situated between
The material of matter, male end dielectric and female end dielectric is polytetrafluoroethylene (PTFE), polyether-ether-ketone resin and liquid crystal polymer
In it is any.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, male end dielectric is the ring bodies for being provided with opening along its length, is centrally formed first
Positioning through hole, the first positioning through hole is for accommodating connection needle.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, female end dielectric have positioned at the female end dielectric center the second positioning through hole with
And multiple structure through-holes, the second positioning through hole is for accommodating attachment base.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, insertion section other end outer surface edge be equipped with multiple protrusions contact projection, contact projection and
The inner surface of intussusceptum mutually touches.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, one end of attachment base is equipped with the identical flexible flaps of multi-disc, the arc-shaped plate of flexible flaps,
Multiple flexible flaps are uniformly arranged on the circumference of the same circle, form insertion hole.
Provided by the present invention for conduct grade signal wave big tolerance plate in plate co-axial joint system, may be used also
To have a feature in that wherein, the other end of attachment base is equipped with fitting bar, and fitting bar has binding face, binding face and fixation
The end face of portion's other end is coplanar with and is fixed on another piece of circuit board.
The action and effect of invention
Involved according to the present invention for conduct grade signal wave big tolerance plate to plate co-axial joint system, because
Being includes Male end connector and terminative connector, and Male end connector includes first shell and connection needle assemblies, female end connection
Device includes second shell and connecting seat assembly, and first shell contains interconnecting piece and insertion section, and it is logical to form connection inside interconnecting piece
Road, connection needle assemblies contain connection needle, and the one end for connecting needle is protruded into interface channel, the fixation for having with one piece of circuit board
Connecting rod is connected, and second shell contains intussusceptum and fixed part, and intussusceptum is set in outside insertion section, the end of the fixed part other end
Face is fixed on another piece of circuit board, and connecting seat assembly contains attachment base, and one end of attachment base is equipped with and connect the another of needle
The insertion hole that one end matches is inserted into axis of the duct in hole along insertion hole and is extended, and connection needle and the duct for being inserted into hole are coaxially set
It sets, the other end for connecting needle, which is plugged on, to be inserted in the hole and can move in the duct in insertion hole.So of the invention is used to pass
The plate for leading the big tolerance of grade signal wave is used to plate co-axial joint system carry out signal wave conduction between two pieces of circuit boards
When can be realized the axial floating tolerance of axial direction ± 0.5.
And because Male end connector one end of the invention is connected with the fixation connecting rod of one piece of circuit board, terminative connector
One end is fixedly connected with another piece of circuit board, so that the present invention, which forms two-part with the fixation connecting rod of one piece of circuit board, connects knot
Structure, therefore effectively shorten the minimum value that must carry out two pieces of circuit board spacing of signal transduction.
Detailed description of the invention
Fig. 1 is the plate for the big tolerance for being used to conduct grade signal wave in the embodiment of the present invention to plate co-axial joint system
Half-section diagram；
Fig. 2 is the plate for the big tolerance for being used to conduct grade signal wave in the embodiment of the present invention to plate co-axial joint system
Complete section schematic diagram；
Fig. 3 is the schematic diagram of first shell in the embodiment of the present invention；
Fig. 4 is the schematic diagram that needle is connected in the embodiment of the present invention；
Fig. 5 is the schematic diagram of male end dielectric in the embodiment of the present invention；
Fig. 6 is the schematic diagram of second shell in the embodiment of the present invention；
Fig. 7 is the schematic diagram of attachment base in the embodiment of the present invention；
Fig. 8 is the schematic diagram of female end dielectric in the embodiment of the present invention；And
System impedance compensation schematic diagram when Fig. 9 is different cross-sectional connection.
Specific embodiment
It is real below in order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention
Example combination attached drawing is applied to make specifically plate co-axial joint system the plate of the big tolerance for conducting grade signal wave of the invention
It illustrates.
Fig. 1 is the plate for the big tolerance for being used to conduct grade signal wave in the embodiment of the present invention to plate co-axial joint system
Half-section diagram；Fig. 2 is that the plate of the big tolerance in the embodiment of the present invention for conducting grade signal wave coaxially connects plate
The complete section schematic diagram of connection device.
As shown in Figure 1 and Figure 2, in the present embodiment, a kind of plate for conducting the big tolerance of grade signal wave is same to plate
Shaft connector 1000, including Male end connector 100, terminative connector 200 and retaining spring 300, in two pieces of circuits
Signal wave conduction is carried out between plate (not marking in attached drawing), is provided with fixed company on one of circuit board (not marking in attached drawing)
Bar (international standard SMPM connecting rod, similarly hereinafter).
Male end connector 100 includes first shell 110 and connection needle assemblies 120.
Fig. 3 is the schematic diagram of first shell in the embodiment of the present invention.
As shown in figure 3, first shell 110 is straight and in both ends open, material is beallon material, contains connection
Portion 111 and insertion section 112.In the present embodiment, the preferred beryllium-bronze of 110 material of first shell.
Interface channel 1111 is formed inside interconnecting piece 111, interface channel 1111 extends along the length direction of first shell 110
And in horn-like, on the end face of one end that the biggish opening of 1111 area of interface channel is located at interconnecting piece 111, interface channel 1111
Expansion angle be 60-100 °.In the present embodiment, interconnecting piece 111 in truncation hollow cone and forms cylinder on top
Boss, interface channel 1111 and interconnecting piece 111 are coaxially disposed and expansion angle is preferably 90 °.
Insertion section internal channel 1121, length side of the insertion section internal channel 1121 along insertion section 112 are formed inside insertion section 112
To extension, one end of insertion section 112 is connected and is connected to the other end of interconnecting piece 111, i.e. 1121 one end of insertion section internal channel
It connects and is connected to the lesser opening of the area of interface channel 1111.The outer surface of 112 one end of insertion section and interconnecting piece 111 are another
The end face at end forms the First terrace 1112 perpendicular to 112 surface of insertion section, and the other end of 112 internal channel 1121 of insertion section exists
There is opening on the end face of the other end of insertion section 112.
In the present embodiment, insertion section 112 is in the cylinder and both ends open of two-stage step, and two step surfaces vertically form
In 112 outer surface of insertion section and along 110 length direction of first shell be arranged, two step surfaces make 112 outer surface of insertion section according to
The outer lead face 1124 of the first outer lead face 1122 of secondary formation, the second outer lead face 1123 and third, the first outer lead face 1122
It is connected with interconnecting piece 111 and diameter successively decreases.It is led outside 1121 inner surface of insertion section internal channel and the first outer lead face 1122, second
Journey face 1123 and the outer lead face 1124 of third are correspondingly formed first inner chamber face 1127, second inner chamber face 1128 and third inner cavity
Face 1129.
The outer 1124 end surface edge of lead face of 112 other end outer surface edge of insertion section, that is, third is equipped with multiple protrusions
Contact projection 1126, the length of contact projection 1126 are 0.27mm-0.33mm.In the present embodiment, the outer lead face 1124 of third
End forms the elasticity insertion piece that two panels is spaced apart from each other, and each elasticity insertion piece is arc plate, contact projection 1126 be around
Being located at the outer diameter formed outside elasticity insertion piece is 1.5mm, and the length of contact projection 1126 is preferably 0.3mm.
There is the male end anticreep of protrusion to have contact with 1125 for the outer surface of insertion section 112.It is along 110 length direction of first shell
Both ends end face is respectively formed insertion fillet surface and insertion step surface relative to 112 outer surface of insertion section, is inserted into step surface and insertion
112 outer surface of portion is vertical, and the angle for being inserted into fillet surface and 112 outer surface of insertion section is θ, and θ is 30-45 °, without insertion fillet surface
Male end anticreep have contact with 1125 length be 0.1mm-0.12mm.In the present embodiment, male end anticreep has contact with 1125 and is located at and second
The first outer 1122 end of lead face that outer lead face 1123 connects, it is excellent that the male end anticreep without insertion fillet surface has contact with 1125 length
Be selected as 0.1mm, the angle for being inserted into fillet surface and 112 outer surface of insertion section is preferably 30 °, male end anticreep have contact with 1125 closed-loops around
On the first outer 1122 surface of lead face and diameter is 2.78mm.
Fig. 4 is the schematic diagram that needle is connected in the embodiment of the present invention, and Fig. 5 is male end dielectric in the embodiment of the present invention
Schematic diagram.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5, connection needle assemblies 120 are located inside first shell 110, connect needle assemblies 120
Contain the connection needle 121, male end dielectric 122 and pressure ring 123 being arranged along 110 length direction of first shell.
Pressure ring 123 is the elastic ring that cross section is L shape, is pressed into interconnecting piece 112 and generated with first inner chamber face 1127
It is full of cooperation, the step surface of pressure ring 123 is towards second inner chamber face 1128.
Male end dielectric 122 is fixedly mounted on the step surface of pressure ring 123, to be provided with opening along its length
1222 ring bodies, side and second inner chamber face 1128 abut, and male end dielectric 122 is centrally formed the first positioning through hole
1221, the material of male end dielectric 122 is any in polytetrafluoroethylene (PTFE), polyether-ether-ketone resin and liquid crystal polymer.?
In the present embodiment, the material of male end dielectric 122 is preferably liquid crystal polymer.
The interlocking of needle 121 is connected in the first positioning through hole 1221, material is beallon material.With sequentially connected
One insertion section 1211, scarfing unit 1212, transition part 1213 and the second insertion section 1214.Material is beallon material.Due to
Male end dielectric 122 is the ring bodies for being provided with opening 1222 along its length, so that connection needle can easily be installed
Enter in the first positioning through hole 1221.In the present embodiment, connection needle 121 is in straight round bar shape, the preferred beryllium-bronze of material.
First insertion section 1211 is close to interface channel 1111, outer diameter 0.28mm-0.32mm.For with one piece of circuit board
The fixation connecting rod (not marking in attached drawing) having is connected.In the present embodiment, the outer diameter of the first insertion section 1211 is preferably
0.30mm。
Scarfing unit 1212 is rabbeted in the first positioning through hole 1221, outer diameter 0.46mm-0.50mm.In the present embodiment
In, the both ends of scarfing unit 1212 all have limited step, and two limited steps are used to scarfing unit 1212 being fixed on the first positioning
In through-hole 1221, the outer diameter of scarfing unit 1212 is preferably 0.48mm.
The outer diameter of transition part 1213 is 0.39mm-0.43mm.In the present embodiment, the outer diameter of transition part 1213 is
0.41mm。
The outer diameter of second insertion section 1214 is 0.58mm-0.62mm.In the present embodiment, the outer diameter of the second insertion section 1214
For 0.60mm.
Terminative connector 200 includes second shell 210 and connecting seat assembly 220.
Fig. 6 is the schematic diagram of second shell in the embodiment of the present invention.
As shown in fig. 6, second shell 210 is straight and has opening in both ends end face, even with 110 activity of first shell
It connects, material is beallon material, contains fixed part 211 and intussusceptum 212.In the present embodiment, 210 material of second shell is excellent
Select beryllium-bronze.
One end end face of fixed part 211 is fixed on another piece of circuit board (not marking in attached drawing), and inside, which is formed, to hold
Receive channel 2111, receiving channel 2111 extends along the length direction of second shell 210.In the present embodiment, fixed part 211 is in sky
Heart cylindrical shape and its other end are provided with flange, one end and use full Surface Mount another piece of circuit board (not marking in attached drawing)
Mode is welded and the flatness of welding surface is in 0.1mm.
Intussusceptum 212 is socketed in outside insertion section 112, and insertion section 112 can exist along the length direction of intussusceptum 212
It is moved in intussusceptum 212, forms intussusceptum internal channel 2121 inside intussusceptum 212, intussusceptum internal channel 2121 is along second shell
210 length direction extends, and one end of intussusceptum 212 is connected and is connected to the other end of fixed part 211, i.e., leads in intussusceptum
The one end in road 2121 connects and is connected to receiving channel 2111.Outside 212 one end of end face and intussusceptum of the flange of fixed part 211
Surface forms the second step face 2112 perpendicular to 212 surface of intussusceptum, and second step face 2112 and First terrace 1112 are flat
Row setting, the other end of intussusceptum internal channel 2121 have opening on the end face of the other end of intussusceptum 212.
In the present embodiment, insertion section 112 can move 1mm in intussusceptum 212.It can realize axial direction ± 0.5
Axial floating tolerance, intussusceptum 212 are cylinder, and inner surface is arranged along 210 length direction of second shell and can be respectively with the
One outer lead face 1122, the outer lead face 1124 of the second outer lead face 1123 and third match first in lead face 2122,
Lead face 2124 in lead face 2123 and third in second.Lead face 2124 is connected with fixed part 211 in third.Work as insertion
When portion 112 moves in intussusceptum 212, the outer lead face of the first outer lead face 1122, the second outer lead face 1123 and third
1124, which respectively correspond along first in lead face 2122, second 2124 length direction of lead face in lead face 2123 and third, moves
Dynamic, the diameter that lead face 2124 is formed in third is 1.4mm and touches with 1126 phase of contact projection.
The female end anticreep that the inner surface edge of 212 other end of intussusceptum is equipped with protrusion has contact with 2125.Its both ends end face is along
Two shells, 210 length direction is respectively formed relative to 212 inner surface of intussusceptum to be inserted in fillet surface and is inserted in step surface, and step is inserted in
Face and 212 inner surface of intussusceptum are vertical, and the angle for being inserted in 212 inner surface of fillet surface and intussusceptum is θ, and θ is 30-45 °, without set
It is 0.1-0.12mm that the female end anticreep for entering fillet surface, which has contact with 2125 length,.Female end anticreep have contact with 2125 and male end anticreep have contact with 1125
The insertion section 112 and intussusceptum 212 for enabling to socket form interference fit.Such setting is in order not to make 112 He of insertion section
Intussusceptum 212 disengages.When insertion section 112 and intussusceptum 212 to be socketed, first insertion section 112 is inclined with respect to intussusceptum 212
Oblique certain angle makes male end anticreep have contact with 1125 a part and crosses female end anticreep and have contact with 2125 and enter in intussusceptums 212, then adjusts
The opposite inclined angle of intussusceptum 212 in whole insertion section 112 male end anticreep have contact with 1125 remainder to cross female end anticreep
Having contact with 2125 makes insertion section 112 and intussusceptum 212 connect together.In the present embodiment, the female end without insertion fillet surface
It is preferably 0.1mm that anticreep, which has contact with 2125 length, and the angle for being inserted in 212 inner surface of fillet surface and intussusceptum is preferably 30 °, and female end is anti-
It is de- to have contact with 2125 closings and be looped around the first outer 1122 inner surface of lead face and diameter as 2.74mm.
Fig. 7 is the schematic diagram of attachment base in the embodiment of the present invention, and Fig. 8 is female end dielectric in the embodiment of the present invention
Schematic diagram；.
As shown in Figure 1, Figure 2, shown in Fig. 7, Fig. 8, connecting seat assembly 220 is located inside second shell 210, connecting seat assembly 220
Contain female end dielectric 222 and attachment base 221.
Female end dielectric 222 is fixedly mounted in receiving channel 2111, and material is polytetrafluoroethylene (PTFE), polyether-ether-ketone resin
And it is any in liquid crystal polymer.Female end dielectric 222 has the second positioning through hole 2221 and multiple structure through-holes
2222.In the present embodiment, female end dielectric 222 is in cylindrical shape, and one end is provided with one and is arranged in diametrically
Through slot (does not mark this through slot as attachment base mounting groove) in attached drawing, and 222 material of female end dielectric is preferably polymerizable mesogenic
Object.
Second positioning through hole 2221 is located at the center of female end dielectric 222.In the present embodiment, structure through-hole 2222
Quantity is 6 and uniform ring is arranged around the second positioning through hole 2221.
Attachment base 221 is contained in the second positioning through hole 2221, and material is beallon material, contains attachment base main body
2211 and fitting bar 2212.In the present embodiment, the preferred beryllium-bronze of 121 material of needle is connected.
Attachment base main body 211 is arranged along 210 length direction of second shell, is embedded in the second positioning through hole 2221,
There is insertion hole 2211a, the size shape of insertion hole 2211a matches with needle 121 is connect, and is inserted into hole 2211a on the end face of one end
Duct along insertion hole 2211a axis direction extend, be inserted into hole 2211a duct and connection needle 121 be coaxially disposed, connect needle
121 other end is plugged in insertion hole 2211a, and when insertion section 112 is moved in intussusceptum 212, connection needle 121 can be
It is inserted into the duct of hole 2211a and moves.Insertion hole 2211a is collectively formed by multiple flexible flaps 2211-1, multiple flexible flaps
2211-1 is both formed on one end of attachment base main body 211, and multiple flexible flaps 2211-1 size shapes are identical and arc-shaped
Plate, multiple flexible flaps 2211-1 are uniformly arranged on the circumference of the same circle and apart from one another by formation insertion hole 2211a.
Insertion hole 2211a internal diameter is 0.64mm-0.67mm, and 211 outer diameter of attachment base main body is 0.90mm-0.93mm.In the present embodiment,
Attachment base main body 211 is cylinder closed at one end, and insertion hole 2211a is collectively formed by 4 flexible flaps 2211-1, is inserted into hole
2211a and attachment base main body 211 are coaxially disposed, and insertion hole 2211a internal diameter is preferably 0.65mm, 211 outer diameter of attachment base main body
Preferably 0.93mm.
Fitting bar 2212 is connected to the other end of attachment base main body 2211, (does not mark in attached drawing) with binding face, pastes
Conjunction face (not marked in attached drawing) towards attachment base 221 outside be arranged, be coplanar with the end face of 211 other end of fixed part and
It is fixed on another piece of circuit board (not marked in attached drawing).It is arranged so that binding face (not marking in attached drawing) and fixes
The end face of the other end in portion 211 is located in approximately the same plane easily to connect attachment base 221 using the welding of full Surface Mount
It connects on another piece of circuit board (not marked in attached drawing).In the present embodiment, the length direction of bar 2212 is bonded perpendicular to connection
One end of the length direction of seat main body 2211, fitting 2212 length direction of bar is fixed in attachment base main body 211, and the other end is located at
Outside attachment base main body 211, when being bonded bar 2212 when attachment base main body 211 is embedded in the second positioning through hole 2221, it is bonded
2212 Matching installation of bar makes the end face of itself and 211 other end of fixed part in the attachment base mounting groove of female end dielectric 222
It is coplanar with.
Retaining spring 300 is set in the outside of intussusceptum 212 and keeps certain power that is adjacent to make 212 outer surface of intussusceptum
The gap obtained between 212 inner surface of intussusceptum and the outer surface of insertion section 112 is kept fixed.Such setting is to keep being inserted in
212 inner surface of portion and 112 outer surface of insertion section can remain concentricity in relative movement.Retaining spring 300 is located at the
Between one step surface 1112 and second step face 2112.300 both ends of retaining spring are individually fixed in First terrace 1112 and
On two step surfaces 2112, for keeping distance between First terrace 1112 and second step face 2112 constant.
For conduct grade signal wave big tolerance plate to the design method of plate co-axial joint system 1000 are as follows:
1) radio frequency and machine-building theoretical knowledge are utilized, theory analysis is done, designs initial connection device:
According to radio frequency theory it is found that voltage standing wave ratio (VSWR) is the direct of signal transduction quality in measurement circuit board
Parameter, as VSWR=1, signal transmitting is lossless, and VSWR can be indicated with input impedance r and output impedance R, expression formula
It is as follows:
It is found that as input impedance r and output impedance R equal, VSWR=1 is shown in structure, i.e., when interconnecting piece 112
When being socketed with socket part 212, two components should keep high concentricity that axial cross section product is fixed.
Initial connection device is obtained according to above-mentioned, is solved in the toroidal interface channel of the design of 111 end of interconnecting piece
Radial tolerance problem between two circuit boards enables insertion section 112 and intussusceptum 212 to remain coaxially connected when being inserted into, together
When be provided with male end anticreep have contact with 1125 and female end anticreep have contact with and be designed to spring engagement portions so as to insertion section 112 and be inserted in
Unlikely disengagement when cooperating of portion 212 has also been devised contact projection 1126 and the elastic interference of insertion section 112 and intussusceptum 212 is kept to match
Structure is closed, connection needle 121 has also been devised and is inserted into the mating structure of elasticity of hole 2211a.
2) 3D modeling is carried out to initial connection device and obtains 3D model.
In the present embodiment, according to the initial connection device in 1), using 3D modeling software SolidWorks to for passing
The plate for leading the big tolerance of grade signal wave carries out 3D modeling to plate co-axial joint system 1000 and adjusts each composition of 3D model
The relative dimensions of component make input impedance r and output impedance R tend to be equal.
System impedance compensation schematic diagram when Fig. 9 is different cross-sectional connection.
When the axial cross section of each building block of 3D model generates stepped change (D1 to D2) as shown in Figure 9, will break
The continuity of bad system impedance and then the impedance matching for influencing Male end connector and terminative connector, at this time with regard to needing to pass through setting
Compensation gap △ compensates it so that system impedance keeps the continuously resistance to realize Male end connector and terminative connector
Anti- matching.Compensation gap △ should be configured according to following empirical equations:
Wherein εrFor the dielectric constant of filled media (air or component materials), dielectric constant can be normal by inquiring this field
Dielectric constant table obtains.
3) analysis optimization is carried out to 3D model with simulation software and obtains optimization 3D model.
In the present embodiment, 2) physical characteristic of each building block in 3D model obtained in and model is imported into Ansys
Workbench 18 carries out mechanical performance and Analysis of electric performance optimization, specifically:
1. pair male end anticreep, which has contact with the elasticity interference fit size that 1125 have contact with 2125 with female end anticreep, carries out analysis optimization,
Make assembling and make its unlikely generation plastic deformation and influence electric property,
2. pair screenshot contact projection 1126 keeps the elasticity interference fit size of insertion section 112 and intussusceptum 212 to divide
Analysis optimization makes insertion section 112 be able to maintain enough elasticity and unlikely generation plastic deformation and influence electric property,
3. couple insertion hole 2211a and the elastic grafting size for connecting needle 121 carry out analysis optimization, it is able to maintain grafting enough
Wrap up in holding force and unlikely generation plastic deformation and influence electric property.
Optimization 3D model is obtained according to 1,2,3.
4) finished product attachment device is manufactured experimently out according to optimization 3D model.
In the present embodiment, according to optimization 3D model obtained in 3), it is preferred to use CITIZEN M16 walks scheming bed to excellent
Change 3D model and manufactured experimently into finished product attachment device, this is to make the +/- 0.01mm of fit dimension tolerance to make grade
The performance of signal wave conduction reaches best.
5) with the mechanical performance and electric property of experiment test finished product attachment device.
The action and effect of embodiment
According to involved in the present embodiment for conduct grade signal wave big tolerance plate to plate co-axial joint system,
Because Male end connector includes that first shell and connection needle assemblies, female end connect including Male end connector and terminative connector
Connecing device includes second shell and connecting seat assembly, and first shell contains interconnecting piece and insertion section, forms connection inside interconnecting piece
Channel, connection needle assemblies contain connection needle, and the one end for connecting needle is protruded into interface channel, for consolidating with what one piece of circuit board had
Determine connecting rod to be connected, second shell contains intussusceptum and fixed part, and intussusceptum is set in outside insertion section, the fixed part other end
End face is fixed on another piece of circuit board, and connecting seat assembly contains attachment base, and one end of attachment base is equipped with and connect needle
The insertion hole that the other end matches is inserted into axis of the duct in hole along insertion hole and is extended, and connection needle and the duct for being inserted into hole are coaxial
Setting, the other end for connecting needle, which is plugged on, to be inserted in the hole and can move in the duct in insertion hole.So the use of the present embodiment
Signal wave conduction is carried out between two pieces of circuit boards to plate co-axial joint system in the plate of the big tolerance of conduction grade signal wave
When can realize input impedance and output impedance by remaining the coaxial flexible connection of Male end connector and terminative connector
Matching, and then can be realized biggish axial tolerance relative to conventional art.
And because Male end connector one end of the present embodiment is connected with the fixation connecting rod of one piece of circuit board, terminative connector
One end be fixedly connected with another piece of circuit board so that the present embodiment with unification block circuit board fixation connecting rod formed two-part connect
Binding structure, relatively previous connector technique eliminate the corresponding connection structure on another piece of circuit board, therefore effective contracting
The minimum value of the short two pieces of circuit board spacing that must carry out signal transduction,
To sum up, the present embodiment has had both the conduction for being able to carry out grade signal wave with respect to conventional art and has been able to achieve larger
Axis tolerance.
In addition, determining because the present embodiment includes retaining spring and the First terrace being mutually arranged and second step face
Position spring between First terrace and second step face, so retaining spring to First terrace and second step face simultaneously
With certain expansionary force, so that First terrace and second step distance between the surface are secured, so that Male end connector and female end
Connector carries out that relative movement will not be generated when the signal wave conduction of larger axial tolerance between two pieces of circuit boards.
In addition, male end anticreep is taken because the present embodiment includes that the male end anticreep being correspondingly arranged has contact with and has contact with female end anticreep
Hook and female end anticreep have contact with to form interference fit, so will not take off when first shell being enabled to be flexibly connected with second shell
It opens.
Further, because the both ends that the male end anticreep of the present embodiment has contact with are respectively formed insertion fillet surface and insertion step
Face；The both ends that female end anticreep has contact with, which are respectively formed, is inserted in fillet surface and is inserted in step surface, so male end anticreep is enabled to have contact with
Have contact with the holding cooperation for being easy mutually assembly and can be stable after mutual assembly with female end anticreep.
Further, because the male end dielectric of the present embodiment is the ring bodies for being provided with opening along its length, in
It is formed centrally the first positioning through hole for accommodating connection needle, so enabling to attachment base that can simply be inlaid in the first positioning
In through-hole.
Further, because the female end dielectric of the present embodiment has multiple structure through-holes, change can be passed through
The quantity of structure through-hole adjusts the system impedance of terminative connector with size to be promoted for conducting grade signal wave
Signal wave conductive performance of the plate of big tolerance to plate co-axial joint system.
Further, because the insertion section other end outer surface edge of the present embodiment is equipped with the contact projection of multiple protrusions,
Contact projection has elasticity and mutually touches with the inner surface of intussusceptum, so that insertion section energy in moving process in intussusceptum
Enough remain conducting.
Further, because one end of the attachment base of the present embodiment is equipped with the identical flexible flaps of multi-disc, flexible flaps are in
Arc plate, multiple flexible flaps form insertion hole, so insertion hole wall has certain elasticity, when connection needle is plugged on insertion
When in hole, insertion hole wall connection needle can be formed it is certain wrap up in holding force to be inserted into hole wall and connect needle remain be close into
And it ensure that connection needle and be inserted into the electric property of hole contact surface.
Further, because the other end of the attachment base of the present embodiment is equipped with fitting bar, fitting bar has binding face, fitting
Face and the end face of the fixed part other end are coplanar with and are fixed on another piece of circuit board, so that binding face and fixation
The end face in portion is located in approximately the same plane, so as to be welded attachment base using full Surface Mount together with the end face of the fixed part other end
It is advantageously connected on another piece of circuit board.
Above embodiment is preferred case of the invention, and the protection scope being not intended to limit the invention, this field is general
Logical technical staff does not need the various deformations or amendments that creative work can be made within the scope of the appended claims and still belongs to this
The protection scope of patent.
Claims (10)
1. a kind of for conducting the plate of the big tolerance of grade signal wave to plate co-axial joint system, for two pieces of circuit boards it
Between carry out signal wave conduction, one end is connected directly between on one piece of circuit board surface, the other end and is arranged in another piece of circuit board
The fixation connecting rod connection with plate end insertion hole on surface characterized by comprising
Male end connector comprising first shell and is arranged in the intracorporal connection needle assemblies of the first shell；And
Terminative connector comprising the second shell being flexibly connected with the first shell and is arranged in the intracorporal company of the second shell
Joint chair component,
Wherein, the first shell is straight, containing interconnecting piece and insertion section, one end of the interconnecting piece and the insertion section
One end be connected and be connected to,
Interface channel is formed inside the interconnecting piece, which is located at the other end of the interconnecting piece in horn-like and big mouth
End face on,
The connection needle assemblies contain the connection needle along first shell length direction setting, are used for and one piece of circuit board
The fixation connecting rod having is connected,
The second shell is straight, containing intussusceptum and fixed part, the one of one end of the intussusceptum and the fixed part
End is connected and is connected to,
The intussusceptum is set in outside the insertion section, and the end face of the fixed part other end is fixed at described in another piece
On circuit board,
The connecting seat assembly contains the attachment base along second shell length direction setting, one end of the attachment base be equipped with
The insertion hole that the other end of the connection needle matches,
Axis of the duct in the insertion hole along the insertion hole extends,
The other end of the duct coaxial arrangement of the connection needle and the insertion hole, the connection needle is plugged on described insert in the hole
And it can be moved in the duct in the insertion hole.
2. the plate according to claim 1 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that, further includes:
Retaining spring is set in the outside of the intussusceptum,
The outer surface of the end face of described interconnecting piece one end and described insertion section one end forms First terrace, described intussusceptum one end
Outer surface and the end face of described fixed part one end form second step face, the First terrace and the second step face are flat
Row setting,
The retaining spring is between the First terrace and the second step face.
3. the plate according to claim 1 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the male end anticreep that the outer surface of the insertion section is equipped with protrusion has contact with, the inner surface side of the intussusceptum other end
The female end anticreep that edge is equipped with protrusion has contact with,
The male end anticreep, which has contact with to have contact with the female end anticreep, to be correspondingly arranged,
The male end anticreep, which has contact with, has contact with the insertion section for enabling to socket and the intussusceptum shape with the female end anticreep
At interference fit.
4. the plate according to claim 3 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the both ends end face that the male end anticreep has contact with relative to the insertion section outer surface be respectively formed insertion fillet surface and
Step surface is inserted into,
The both ends end face that the female end anticreep has contact with is respectively formed relative to the intussusceptum other end inner surface and is inserted in fillet surface
Be inserted in step surface,
The insertion fillet surface and the angle of the insertion section outer surface are θ, described to be inserted in fillet surface and the intussusceptum is another
The angle for holding inner surface is θ,
The θ is 30-45 °.
5. the plate according to claim 1 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the connection needle assemblies also contain male end dielectric, and the connecting seat assembly also contains female end dielectric,
The material of the male end dielectric and the female end dielectric is polytetrafluoroethylene (PTFE), polyether-ether-ketone resin and liquid
It is any in crystalline polymer.
6. the plate according to claim 5 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the male end dielectric is the ring bodies for being provided with opening along its length, is centrally formed the first positioning through hole,
First positioning through hole is for accommodating the connection needle.
7. the plate according to claim 5 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the female end dielectric has the second positioning through hole positioned at the female end dielectric center and multiple structures
Through-hole, second positioning through hole is for accommodating the attachment base.
8. the plate according to claim 1 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the insertion section other end outer surface edge is equipped with the contact projection of multiple protrusions, the contact projection and the set
The inner surface for entering portion mutually touches.
9. the plate according to claim 1 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, one end of the attachment base be equipped with the identical flexible flaps of multi-disc, the arc-shaped plate of the flexible flaps,
The multiple flexible flaps are uniformly arranged on the circumference of the same circle, form the insertion hole.
10. the plate according to claim 1 for conducting the big tolerance of grade signal wave is to plate co-axial joint system,
It is characterized in that:
Wherein, the other end of the attachment base is equipped with fitting bar, which has binding face, the binding face and the fixed part
The end face of the other end is coplanar with and is fixed on another piece of circuit board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910486374.1A CN110165450B (en) | 2019-06-05 | 2019-06-05 | Board-to-board coaxial connection device with large tolerance for conducting millimeter-scale signal waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910486374.1A CN110165450B (en) | 2019-06-05 | 2019-06-05 | Board-to-board coaxial connection device with large tolerance for conducting millimeter-scale signal waves |
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| Publication Number | Publication Date |
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| CN110165450A true CN110165450A (en) | 2019-08-23 |
| CN110165450B CN110165450B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910486374.1A Active CN110165450B (en) | 2019-06-05 | 2019-06-05 | Board-to-board coaxial connection device with large tolerance for conducting millimeter-scale signal waves |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050225082A1 (en) * | 2002-10-10 | 2005-10-13 | Vygon | Fluid connector for medical use and uses thereof |
| CN206524491U (en) * | 2017-02-27 | 2017-09-26 | 四川华丰企业集团有限公司 | The big tolerance radio frequency connector of high band |
| CN206908064U (en) * | 2017-03-30 | 2018-01-19 | 中航富士达科技股份有限公司 | It is a kind of can 360 ° of rotational positionings radio frequency (RF) coaxial connector |
| CN109687239A (en) * | 2018-11-13 | 2019-04-26 | 苏州兆特电子股份有限公司 | A kind of radio frequency (RF) coaxial connector for preventing cable from falling off |
-
2019
- 2019-06-05 CN CN201910486374.1A patent/CN110165450B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050225082A1 (en) * | 2002-10-10 | 2005-10-13 | Vygon | Fluid connector for medical use and uses thereof |
| CN206524491U (en) * | 2017-02-27 | 2017-09-26 | 四川华丰企业集团有限公司 | The big tolerance radio frequency connector of high band |
| CN206908064U (en) * | 2017-03-30 | 2018-01-19 | 中航富士达科技股份有限公司 | It is a kind of can 360 ° of rotational positionings radio frequency (RF) coaxial connector |
| CN109687239A (en) * | 2018-11-13 | 2019-04-26 | 苏州兆特电子股份有限公司 | A kind of radio frequency (RF) coaxial connector for preventing cable from falling off |
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|---|---|
| CN110165450B (en) | 2021-05-14 |
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