CN109728458B - Hybrid radio frequency connector - Google Patents
Hybrid radio frequency connector Download PDFInfo
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- CN109728458B CN109728458B CN201810776828.4A CN201810776828A CN109728458B CN 109728458 B CN109728458 B CN 109728458B CN 201810776828 A CN201810776828 A CN 201810776828A CN 109728458 B CN109728458 B CN 109728458B
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Abstract
The invention provides a hybrid radio frequency connector, comprising: an outer conductor, a center pin, a first insulator, and a second insulator; the outer conductor is manufactured by adopting a metal deep drawing process; the central needle comprises a first needle part, a middle part and a second needle part which are sequentially connected; the central axis of the first needle part is in line with the central axis of the second needle part, and the central axis of the first needle part is the central axis of the central needle; the central needle is manufactured by adopting a process of bending a plate with uniform wall thickness after stamping, the first needle part and the second needle part are of a rolling structure, and the middle part is of a bending structure; the center pin is coaxially arranged in the outer conductor; the two axial ends of the central needle are provided with splicing holes; the two ends of the center pin are respectively clamped in the first insulator and the second insulator, and the first insulator and the second insulator are clamped in the outer conductor. The invention is a hybrid radio frequency connector which has the advantages of less consumption of raw materials, short processing time and female pin type at two ends and can be used for connecting two PCB boards.
Description
Technical Field
The invention relates to the technical field of hybrid radio frequency connectors, in particular to a hybrid radio frequency connector.
Background
The traditional design of the outer conductor of the connector mainly comprises three types, namely a long cylindrical outer conductor processed by a traditional machine tool such as turning, a long cylindrical outer conductor rolled by a stamping or bending process, and an outer conductor with uneven wall thickness produced by a metal casting process.
The long cylindrical outer conductor processed by the traditional machine tools such as turning and the like is made of bars or pipes, and the design consumes more raw materials due to the need of processing the inner hole, the steps on the outer surface, the clamping grooves and the like of the outer conductor.
The outer conductor rolled by conventional sheet metal stamping or bending processes leaves a splice after being bent into a cylindrical shape. The splice joint has poor strength and rigidity, and can be expanded when being subjected to expansion force of an insulator assembled in the shell during assembly of parts, so that dimensional change is caused, and if the splice joint is used in a radio frequency band, the radio frequency performance can be directly influenced. Meanwhile, the retention force between the inner hole of the outer conductor and the insulator is reduced, the insulator is easy to loosen from the inner hole of the outer conductor, and the electrical performance of the connector is disabled. The cylindrical outer conductor rolled by stamping or bending process also uses the buckle structure to lock the splice seam, but the locking force is limited, and the splice seam is easy to be expanded due to the matching dimensional tolerance of the concave buckle piece and the convex buckle piece, and the volume is increased. If the splice joint is joined by welding or other means, the cost of manufacturing the product is greatly increased.
There are two main types of conventional designs of the center pin of the connector, one is machined by a conventional machine tool such as turning, and the method is long in time consumption for machining the center pin. The second is made by stamping or bending, but this method is generally done in the form of a central pin.
In the connection of the existing PCB and the PCB, a seat welded on the PCB is made into a female pin form, and in the connection of the PCB and the PCB, the damage rate of the female pin seat is much higher than that of the male pin seat, if the female pin seat on the PCB is damaged, the female pin seat is difficult to be independently replaced, and the PCB with the female pin seat and containing a plurality of components is generally replaced wholly, so that higher cost is caused. If the male pin seat is arranged on the PCB, the replacement of the PCB can be reduced because the male pin seat is not easy to damage.
Therefore, aiming at the requirement of the 5G communication age, a new low-cost and high-productivity hybrid radio frequency connector with double-end female pins, which can be used for connecting two PCB seats, needs to be developed, so that the connector with the female pins can be conveniently replaced when the connector with the female pins is damaged.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a hybrid rf connector.
To achieve the above and other related objects, the present invention provides a hybrid radio frequency connector comprising: an outer conductor, a center pin, a first insulator, and a second insulator; the outer conductor is manufactured by adopting a metal deep drawing process; the central needle comprises a first needle part, a middle part and a second needle part which are sequentially connected; the central axis of the first needle part is collinear with the central axis of the second needle part, and the central axis of the first needle part is the central axis of the central needle; the central needle is manufactured by adopting a process of bending a plate with uniform wall thickness after stamping, the first needle part and the second needle part are of a rolling structure, and the middle part is of a bending structure; the center pin is coaxially arranged in the outer conductor; the two axial ends of the central needle are provided with splicing holes; the two ends of the center pin are respectively clamped in the first insulator and the second insulator, the first insulator and the second insulator are clamped in the outer conductor, and the first insulator and the second insulator are coaxially arranged with the outer conductor; the length direction of the central needle is in the same direction as the axial direction of the central needle, a plane passing through the midpoint of the length of the central needle and perpendicular to the central axis of the central needle is a central axis, and the hybrid radio frequency connector is of a mirror symmetry structure with the central axis as a symmetry plane.
Preferably, the central needle is a base money piece or a length extending money piece; when the center pin is the base money, the intermediate portion includes: the two axial ends of the middle circular arc part are respectively connected with the first needle part and the second needle part, and the central axis of the middle circular arc part is collinear with the central axis of the central needle; when the center pin is a length-extending piece, the intermediate portion includes: the device comprises two separation arc parts, wherein a length compensation part is arranged between the two separation arc parts, and the length compensation part is of a rolling structure; one ends of the two separation arc parts, which are far away from the length compensation part, are respectively connected with the corresponding first needle part and the second needle part; the central axis of the separation arc part and the central axis of the length compensation part are both collinear with the central axis of the central needle.
Further, the middle part further comprises a first limiting part and a second limiting part which are sequentially arranged along the length direction of the central needle; the first limiting part is closer to the first needle part than the second limiting part; the first insulator is contacted with the first limiting part, and the second insulator is contacted with the second limiting part; when the central needle is a basic money piece, the first limiting part and the second limiting part are arranged on the middle circular arc part; when the central needle is a length extension type piece, the middle part further comprises a first limiting part and a second limiting part which are respectively arranged on the two separation arc parts.
Further, the first limiting part and the second limiting part have the same structure; when the central needle is a basic money piece, the first limiting part comprises a convex blocking piece arranged on the circumferential end surface of the middle circular arc part; when the central needle is a length extension type piece, the first limiting part comprises a protruding blocking piece arranged on the circumferential end face of the separation arc part.
Still further, when the central needle is the basic money, the first limiting part further comprises an auxiliary protruding part arranged on the outer side surface of the middle circular arc part, and the distance between the auxiliary protruding part of the first limiting part and the first needle part is equal to the distance between the protruding blocking part of the first limiting part and the first needle part; when the central needle is a length extension type piece, the first limiting part further comprises an auxiliary protruding piece arranged on the outer side face of the separation circular arc part, and the distance between the auxiliary protruding piece of the first limiting part and the first needle part is equal to the distance between the protruding blocking piece of the first limiting part and the first needle part.
Further, when the central needle is the basic money, the splicing part of the first needle part and the opening of the middle circular arc part are positioned on the same side of the central needle, the central axis of the first needle part and the opening of the middle circular arc part are passed through, the plane perpendicular to the central axis surface is a first bisector, and the middle part is symmetrically arranged by taking the first bisector as a symmetrical surface; when the central needle is a length extension type piece, the length compensation part is of a rolled round structure, the splicing part of the length compensation part, the splicing part of the first needle part and the opening part of the separation arc part are all positioned on the same side of the central needle, the central axis of the first needle part and the opening part of the separation arc part are used, the plane perpendicular to the central axis surface is a second bisection surface, and the middle part is symmetrically arranged by taking the second bisection surface as a symmetrical surface.
Preferably, the first insulator and the second insulator have the same structure, the first insulator is a hollow cylinder, two ends of the center needle are respectively inserted into the inner walls of the first insulator and the second insulator, and an annular notch is arranged on the outer peripheral side surface of the first insulator.
Preferably, the first needle portion includes a first needle body and a plurality of spaced apart blades disposed on an end of the first needle body remote from the intermediate portion; the second needle part comprises a second needle body and a plurality of blades which are arranged at intervals on one end of the second needle body far away from the middle part; all the blades on the first needle body and all the blades on the second needle body enclose the inserting hole.
Preferably, the first needle body and the second needle body are provided with linear splicing seams.
Preferably, convex rings protruding outwards in the radial direction are arranged on two axial end faces of the outer conductor; the inner wall of the outer conductor is provided with a plurality of inward protruding parts which press the first insulator and the second insulator; the two axial end surfaces of the outer conductor are provided with grooves extending inwards along the axial direction.
Preferably, the outer conductor and the center pin are both made of a metallic material having elasticity.
Preferably, the first insulator and the second insulator are each made of an insulating material having compression resilience.
As described above, the hybrid radio frequency connector of the present invention has the following beneficial effects:
1) The outer conductor is manufactured by adopting a metal deep drawing process, so that the problem of high raw material consumption caused by the fact that the original outer conductor is machined by adopting a traditional machine tool such as turning is solved, meanwhile, the problem that the original outer conductor is manufactured by adopting stamping and bending coiling, and the outer conductor has a splice seam is solved, and the situation that the stamped outer conductor is expanded during assembly can be avoided; in addition, the reliability of the outer conductor manufactured by adopting the metal deep drawing process is equivalent to that of the outer conductor manufactured by the traditional machine tools such as turning and the like; on the other hand, when the outer conductor is processed, a clamping structure for assembly is not required to be designed on the outer conductor, so that the structure of the outer conductor is simplified; in general, the manufacturing of the outer conductor can reduce the consumption of raw materials, shorten the processing time consumption and reduce the cost.
2) Compared with the existing mode of adopting a turning machine to process the central needle, the central needle is manufactured by adopting a process of bending the plate after stamping with uniform wall thickness, so that the consumption of raw materials can be reduced, the processing time is shortened, and the cost is reduced;
3) The two axial ends of the central needle are provided with the plug holes, the two ends of the central needle are female needles, and the two ends are made into female needle forms, so that the hybrid radio frequency connector can be connected with the PCB provided with the male needles on the two seats, the reliability of the seats connected with the PCB in a direct welding way can be improved, and compared with the seats provided with the female needles on the existing PCB, the seats provided with the male needles on the PCB can reduce the damage rate; the hybrid radio frequency connector is easy to replace as the hybrid radio frequency connector inserted between two PCB seats, so that the high-cost PCB welded with a plurality of elements does not need to be replaced;
4) The two ends of the center needle are respectively clamped in the first insulator and the second insulator, so that a double-insulator center needle positioning structure is formed, and the position of the center needle is more stable; the first insulator and the second insulator are matched with the central needles of the hybrid radio frequency connector with different lengths, so that the central needles can be well fixed; the length of the central needle is adjusted to realize serialization of the central needle, and when the central needle is a length extension type piece, the length of the length compensation part of the central needle is changed, so that the structure of the central needle can be arranged in an outer conductor corresponding to the length of the central needle to form a hybrid radio frequency connector with different lengths.
5) The first insulator and the second insulator are clamped in the outer conductor, the structures of the first insulator and the second insulator are the same, the first limiting part blocks the end face of the first insulator, the second limiting part blocks the end face of the second insulator, and the distance between the first limiting part and the second limiting part on the center pin can be determined according to actual needs, namely, under the condition that the structures and the sizes of the first insulator and the second insulator are unchanged, the first insulator and the second insulator can be applied to the mixed radio frequency connector with different lengths;
6) Since the central axis of the first needle part is the central axis of the central needle; the central axis of the central needle, the central axis of the outer conductor and the central axis of the first insulator are collinear; the first needle part and the second needle part are in a rolling structure; from the perspective of radio frequency transmission, the first needle, the first insulator corresponding to the first needle and the section of the outer conductor corresponding to the length of the first needle form a radio frequency coaxial transmission line, and the second needle, the second insulator corresponding to the second needle and the section of the outer conductor corresponding to the length of the second needle also form a radio frequency coaxial transmission line; the central axis of the first needle part is collinear with the central axis of the second needle part, and the first needle part and the second needle part are positioned on the same radio frequency coaxial transmission line; the whole middle part is not a complete round structure, and from the perspective of radio frequency transmission, the whole middle part and the section of the outer conductor corresponding to the length of the whole middle part do not form a radio frequency coaxial transmission line, so that the hybrid radio frequency connector is a hybrid of a structure forming the radio frequency coaxial transmission line and a structure not forming the radio frequency coaxial transmission line; through structural adjustment of the middle part, the whole middle part, the section of the outer conductor, the section of the first insulator and the section of the second insulator corresponding to the length of the whole middle part realize radio frequency impedance matching, so that the first needle part and the second needle part on the same radio frequency coaxial transmission line pass through the middle part for transition, thereby meeting radio frequency performance and solving coaxial connectivity;
7) The invention is a mixed radio frequency connector with less raw material consumption, short processing time and two ends in the form of female needles, which can be used for connecting two PCB boards to each other in series with different lengths.
Drawings
Fig. 1 is a schematic top view of a hybrid rf connector according to the present embodiment, with a central pin as a base component.
FIG. 2 is a schematic view showing a cross-sectional structure of the A-A direction of FIG. 1.
Fig. 3 is a schematic front sectional view of the hybrid rf connector according to the present embodiment, when the central pin of the hybrid rf connector is the base member.
Fig. 4 is a schematic perspective view of the hybrid rf connector according to the present embodiment, when the central pin of the hybrid rf connector is the base member.
Fig. 5 is a schematic perspective view of the central pin of the hybrid rf connector according to the present embodiment.
Fig. 6 is a schematic top view of the hybrid rf connector according to the embodiment, when the central pin of the hybrid rf connector is a length-extending member.
Fig. 7 is a schematic view showing a cross-sectional structure in the direction B-B of fig. 6.
Fig. 8 is a schematic front sectional view of the hybrid rf connector according to the embodiment, when the central pin of the hybrid rf connector is a length-extending member.
Fig. 9 is a schematic perspective view of a central pin of the hybrid rf connector according to the present embodiment when the central pin is a length-extending member.
Fig. 10 is a schematic perspective view showing an auxiliary protruding member disposed on a central pin of the hybrid rf connector according to the present embodiment when the central pin is a length-extending member.
Fig. 11 is a schematic perspective view showing a structure of a protruding stop member disposed on a central pin of the hybrid rf connector according to the present embodiment when the central pin is a length-extending member.
Fig. 12 is a schematic perspective view showing the first insulator of the present embodiment.
Description of the reference numerals
100. Outer conductor
110. Convex ring
120. Protruding part
130. Slotting
200. Central needle
201. Plug hole
202. Splice joint
210. First needle part
211. First needle body
212. Blade
220. Intermediate portion
221. First limit part
2211. Protruding stopper
22111. Material breaking plane
2212. Auxiliary protruding piece
222. Second limit part
223. Middle arc part
2231. Opening of the middle arc part
224. Separated arc part
225. Length compensation part
230. Second needle part
231. Second needle body
310. First insulator
311. Annular notch
320. Second insulator
Q1 section of the first insulator corresponding to the first pin portion
Q2 section of the outer conductor corresponding to the length of the first pin portion
Q3 section of the second insulator corresponding to the second pin portion
Q4 section of the outer conductor corresponding to the length of the second pin portion
Q5 section of the first insulator corresponding to one end of the middle circular arc portion
Q6 section of the second insulator corresponding to one end of the middle circular arc portion
Q7 section of the outer conductor corresponding to the length of the middle circular arc portion
Q8 a section of the first insulator corresponding to one end of the divided circular arc portion near the first needle portion
Q9 a section of the outer conductor corresponding to the length of the divided circular arc portion near the first needle portion
Q10 section of the second insulator corresponding to one end of the divided circular arc portion near the second needle portion
Q11 a section of the outer conductor corresponding to the length of the divided circular arc portion near the second needle portion
Q12 section of the outer conductor corresponding to the length of the length compensation part
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
As described in fig. 1 to 12, the hybrid rf connector of the present embodiment includes: an outer conductor 100, a center pin 200, a first insulator 310, and a second insulator 320;
the outer conductor 100 is manufactured by a metal deep drawing process;
the center needle 200 includes a first needle portion 210, an intermediate portion 220, and a second needle portion 230 connected in sequence; the central axis of the first needle portion 210 is collinear with the central axis of the second needle portion 230, and the central axis of the first needle portion 210 is the central axis of the central needle 200; the center pin 200 is manufactured by adopting a process of bending a plate with uniform wall thickness after stamping, the first pin part 210 and the second pin part 230 are in a rolled round structure, and the middle part 220 is in a bending structure; the center pin 200 is coaxially disposed inside the outer conductor 100; plug holes 201 are formed at two axial ends of the center needle 200; the two plug holes 201 are respectively positioned on the first needle part 210 and the second needle part 230;
both ends of the center pin 200 are respectively clamped into the first insulator 310 and the second insulator 320, the first insulator 310 and the second insulator 320 are clamped into the outer conductor 100, and the first insulator 310 and the second insulator 320 are coaxially arranged with the outer conductor 100;
the length direction of the center needle 200 is in the same direction as the axial direction of the center needle 200, a plane passing through the midpoint of the length of the center needle 200 and perpendicular to the central axis of the center needle 200 is a central axis, and the hybrid radio frequency connector has a mirror-symmetrical structure with the central axis as a symmetrical plane.
The outer conductor 100 is manufactured by adopting a metal deep drawing process, the outer conductor 100 is of an integrally formed seamless cylindrical structure, the problem of more raw materials consumption caused by the fact that the original outer conductor 100 is processed by adopting a traditional machine tool such as turning is solved, meanwhile, the problem that the original outer conductor 100 is manufactured by adopting stamping and bending rolls, and the outer conductor 100 has a spliced gap is solved, and the situation that the stamped outer conductor 100 is expanded during assembly can be avoided; in addition, the reliability of the outer conductor 100 manufactured by adopting the metal deep drawing process is equivalent to that of the outer conductor 100 manufactured by a traditional machine tool such as turning; on the other hand, when the outer conductor 100 of the present invention is processed, a clamping structure for assembly is not required to be designed on the outer conductor 100, so that the structure of the outer conductor 100 is simplified; in general, the fabrication of the outer conductor 100 of the present invention can reduce the consumption of raw materials, shorten the processing time and reduce the cost.
The center pin 200 is manufactured by adopting a process of bending a plate with uniform wall thickness after stamping, and compared with the existing mode of adopting a turning machine to process the center pin 200, the consumption of raw materials can be reduced, the processing time is shortened, and the cost is reduced;
The two axial ends of the central needle 200 are respectively provided with the plug holes 201, so that the two ends of the central needle 200 are both female needles, and the two ends are both in a female needle form; the hybrid radio frequency connector is easy to replace as the hybrid radio frequency connector inserted between two PCB seats, so that the high-cost PCB welded with a plurality of elements does not need to be replaced;
the two ends of the center pin 200 are respectively caught in the first insulator 310 and the second insulator 320, which forms a structure of positioning the center pin 200 by the double insulators, so that the position of the center pin 200 is more stable. For longer hybrid rf connectors, the length compensation 225 of the corresponding center pin 200 is correspondingly longer and is also well fixed.
The central needle 200 is a basic money or a length extending money;
when the center pin 200 is the base money, the middle part 220 includes: an intermediate circular arc portion 223, wherein both axial ends of the intermediate circular arc portion 223 are connected to the first needle portion 210 and the second needle portion 230, respectively;
When the center pin 200 is a length-extending piece, the middle portion 220 includes: the device comprises two separation arc parts 224, wherein a length compensation part 225 is arranged between the two separation arc parts 224, and the length compensation part 225 is in a rolling structure; one ends of the two divided circular arc portions 224, which are remote from the length compensating portion 225, are connected to the corresponding first and second needle portions 210 and 230, respectively.
Since the central axis of the first needle portion 210 is the central axis of the center needle; the central axis of the center pin 200, the central axis of the outer conductor 100 and the central axis of the first insulator 310 are collinear; the first needle portion 210 and the second needle portion 230 are in a rolled-up structure; from the perspective of radio frequency transmission, the structure formed by the first pin portion 210, the section Q1 of the first insulator 310 corresponding to the first pin portion 210, and the section Q2 of the outer conductor 100 corresponding to the length of the first pin portion 210 constitute a radio frequency coaxial transmission line, and the structure formed by the second pin portion 230, the section Q3 of the second insulator 320 corresponding to the second pin portion 230, and the section Q4 of the outer conductor 100 corresponding to the length of the second pin portion 230 constitutes a radio frequency coaxial transmission line; the central axis of the first needle part 210 is collinear with the central axis of the second needle part 230, and the first needle part 210 and the second needle part 230 are positioned on the same radio frequency coaxial transmission line, so that the radio frequency coaxial transmission lines at the two ends of the hybrid radio frequency connector can be mutually inserted with the corresponding coaxial connectors;
When the center pin 200 is the base money, the middle portion 220 includes: an intermediate circular arc portion 223, wherein both axial ends of the intermediate circular arc portion 223 are connected to the first needle portion 210 and the second needle portion 230, respectively; the middle circular arc portion 223 has a curved structure, and the structure formed by the middle circular arc portion 223, the section Q5 of the first insulator 310 corresponding to one end of the middle circular arc portion 223, the section Q6 of the second insulator 320 corresponding to one end of the middle circular arc portion 223, and the section Q7 of the outer conductor 100 corresponding to the length of the middle circular arc portion 223 does not form a radio frequency coaxial transmission line; and the stamping and bending process can conveniently realize the structure of the middle circular arc part 223;
when the center pin 200 is a length-extending piece, the middle portion 220 includes: the two separation arc parts 224, a length compensation part 225 is arranged between the two separation arc parts 224, and the length compensation part 225 is of a rolling structure; the structure formed by the divided circular arc portion 224 near the first needle portion 210, the section Q8 of the first insulator 310 corresponding to one end of the divided circular arc portion 224 near the first needle portion 210, and the section Q9 of the outer conductor 100 corresponding to the length of the divided circular arc portion 224 near the first needle portion 210 does not constitute a radio frequency coaxial transmission line; the structure formed by the separation circular arc portion 224 near the second needle portion 230, the section 10 of the second insulator 320 corresponding to one end of the separation circular arc portion 224 near the second needle portion 230, and the section Q11 of the outer conductor 100 corresponding to the length of the separation circular arc portion 224 near the second needle portion 230 does not constitute a radio frequency coaxial transmission line; the length compensation part 225 and the structure formed by the section Q12 of the outer conductor 100 corresponding to the length of the length compensation part 225 form a 50Ω rf coaxial transmission line; the length compensation part 225 can be lengthened, and the influence on the radio frequency performance is small, so that the length of the length compensation part 225 is changed according to the actual interval between the PCB boards. The length of the length compensating part 225 is set according to the length required for the center pin 200. The structure of the center pin 200 is a basic piece or a length-extending piece that can meet the different length requirements of the center pin 200.
The middle portion 220 further includes a first limiting portion 221 and a second limiting portion 222 sequentially disposed along a length direction of the center needle 200; the first limiting portion 221 is closer to the first needle portion 210 than the second limiting portion 222; the first insulator 310 contacts the first limiting part 221, and the second insulator 320 contacts the second limiting part 222;
when the center pin 200 is a basic money item, the first limiting portion 221 and the second limiting portion 222 are both disposed on the middle circular arc portion 223;
when the center pin 200 is a length-extending member, the middle portion 220 further includes a first limiting portion 221 and a second limiting portion 222 respectively disposed on the two separating circular arc portions 224.
The first insulator 310 and the second insulator 320 are both clamped in the outer conductor 100, the structures of the first insulator 310 and the second insulator 320 are the same, the first limiting part 221 blocks the end face of the first insulator 310, the second limiting part 222 blocks the end face of the second insulator 320, and then the distance between the first limiting part 221 and the second limiting part 222 on the center pin 200 can be determined according to actual needs, that is, when the structures and the sizes of the first insulator 310 and the second insulator 320 are unchanged, the same first insulator 310 and second insulator 320 can be applied to the hybrid radio frequency connector with different lengths in a series formed by the hybrid radio frequency connector.
The first limiting part 221 and the second limiting part 222 have the same structure; when the center pin 200 is the base money, the first limiting portion 221 includes a protruding stopper 2211 provided on the circumferential end surface of the intermediate circular arc portion 223; when the center pin 200 is a length-extending piece, the first stopper 221 includes a protruding stopper 2211 provided on the circumferential end surface of the partition circular arc portion 224. The protruding stop 2211 can block the end of the insulator, while the protruding stop 2211 is also the breaking point of the center pin 200.
When the center needle 200 is the base money, the first limiting part 221 further includes an auxiliary protrusion 2212 disposed on the outer side surface of the middle circular arc part 223, and a distance between the auxiliary protrusion 2212 of the first limiting part 221 and the first needle part 210 is equal to a distance between the protrusion stop 2211 of the first limiting part 221 and the first needle part 210;
when the center pin 200 is a length-extending piece, the first limiting portion 221 further includes an auxiliary protrusion 2212 disposed on an outer side surface of the separating circular arc portion 224, and a distance between the auxiliary protrusion 2212 of the first limiting portion 221 and the first pin portion 210 is equal to a distance between the protrusion stop 2211 of the first limiting portion 221 and the first pin portion 210.
The protruding stop 2211 is on the same plane as the auxiliary protruding stop 2212 so that the protruding stop 2211 and the auxiliary protruding stop 2212 can simultaneously block the ends of the respective first insulator 310 and second insulator 320, and the center pin 200 cannot move toward both end surfaces of the connector since the first insulator 310 and the second insulator 320 are fixed in the outer conductor 100 by the protruding part 120 of the outer conductor 100.
The side surface of the protruding stop 2211 of the first limiting part 221, which is far away from the middle circular arc surface 223, and the side surface of the protruding stop 2211 of the second limiting part 222, which is far away from the separating circular arc surface 223, are both a material breaking plane 22111, and the material breaking plane 22111 is used for material connection and material breaking. The structure can avoid the problems that the end face of the center needle 200 is broken, the length precision of the center needle 200 is difficult to control, broken material marks can be left, and the appearance is bad.
The material connecting point is arranged on the protruding baffle 2211 on the center needle 200, so that the problems that the radio frequency mismatch is not increased, the material breaking point is arranged on two end surfaces, the length tolerance of the center needle 200 is difficult to control during material breaking, and visible material breaking traces are left on the end surfaces of the formed connector are avoided.
The auxiliary projection 2212 is a boss punched out of a plate material for bending the center pin. The number of the auxiliary protrusions 2212 in the first limiting portion 221 is two.
When the central needle 200 is the basic money, the central axis of the middle circular arc part 223 is collinear with the central axis of the central needle 200; this structure facilitates the processing of the intermediate circular arc portion 223; when the central needle 200 is a length-extending piece, the length compensating portion 225 is in a rolled round structure, and the central axis of the separating arc portion 224 and the central axis of the length compensating portion 225 are collinear with the central axis of the central needle 200; this structure facilitates the manufacturing of the process of dividing the circular arc portion 224 and the length compensating portion 225.
When the central needle 200 is the basic money, the joint of the first needle portion 210 and the opening 2231 of the middle circular arc portion 223 are on the same side of the central needle 200, and a plane perpendicular to the central axis surface is a first bisector surface through the central axis of the first needle portion 210 and the opening 2231 of the middle circular arc portion 223, and the middle portion 220 is symmetrically arranged with the first bisector surface as a symmetry surface; when the center pin 200 is a length-extending part, the length compensation portion 225 is in a rolled round structure, the splicing portion of the length compensation portion 225, the splicing portion of the first pin portion 210 and the opening 2241 of the separation arc portion 224 are all located on the same side of the center pin 200, the central axis of the first pin portion 210 and the opening 2241 of the separation arc portion 224 pass through, the plane perpendicular to the central axis is a second bisecting plane, and the middle portion 220 is symmetrically arranged with the second bisecting plane as a symmetry plane. This configuration is easier to control in terms of the bending process implementation and the configuration of the center needle 200 is also more stable.
The first needle portion 210 includes a first needle body 211 and a plurality of blades 212 provided at intervals on an end of the first needle body 211 remote from the middle portion 220; the second needle part 230 includes a second needle body 231 and a plurality of blades 212 disposed at intervals on an end of the second needle body 231 remote from the middle part 220; all the blades 212 on the first needle body 211 and all the blades 212 on the second needle body 231 enclose the insertion hole 201. This structure makes the jack 201 elastic. Further, the plurality of blades 212 disposed at intervals are formed in a tapered shape such that the diameter of a structure surrounded by the plurality of blades 212 connected to the first needle body 211 is gradually reduced in a direction away from the first needle body 211 during the rolling process, so that the insertion force and the holding force of the insertion hole 201 are properly achieved.
The first insulator 310 has the same structure as the second insulator 320, the first insulator 310 is a hollow cylinder, both ends of the center pin 200 are respectively inserted into inner walls of the first insulator 310 and the second insulator 320, and an annular notch 311 is provided on an outer circumferential side surface of the first insulator 310. The structure of the annular notch 311 plays a role in impedance matching, and ensures radio frequency performance.
The first needle body 211 and the second needle body 231 each have a linear splice 202 thereon. The outer diameter of the first needle body 211 is the same as the outer diameter of the second needle body 231, and since the first insulator 310 is a hollow cylinder, the central needle 200 is inserted into the inner wall of the insulator, the inner wall diameter of the first insulator 310 is equal to the outer diameter of the first needle body 211, and the inner wall of the first insulator 310 and the inner wall of the second insulator 320 can be respectively clamped and wrapped on the first needle body 211 and the second needle body 231, so that the linear splicing seam 202 on the central needle 200 cannot be spread to be larger, and the use is not affected. In addition, due to the limitation of the inner diameter of the hollow cylinder of the first insulator 310, the blades 212 forming the plug hole 201 are not easily broken due to radial deflection in use.
The outer conductor 100 is provided with a collar 110 protruding radially outward on both axial end surfaces. The convex ring 110 has an arc shape in an axial section along the outer guide. The outer surface of the collar 110 is a contact surface for the outer conductor 100 to mate with the inner bore of another connector housing; the convex ring 110 is arranged in an arc shape, so that the contact surface of the convex ring 110 and the inner hole of the other connector shell is smooth, and the inner hole wall of the other connector shell is not easy to scratch when the convex ring is matched with the inner hole of the other connector shell. And the male ring 110 also has a guiding function when the outer conductor 100 is mated with the female hole of another connector.
The inner wall of the outer conductor 100 is provided with a plurality of inward protrusions 120 pressing the first insulator 310 and the second insulator 320. When the insulator of the connector is assembled into the outer conductor 100, the protrusion 120 can clamp the insulator so that the insulator and the outer conductor 100 have sufficient retention force so that the insulator does not move relative to the outer conductor 100; the protruding portion 120 is preferably a dot-shaped or elongated non-annular protruding portion 120; the protrusion 120 is designed as a dot-shaped or elongated non-annular protrusion 120, which can prevent axial rotation between the insulator and the outer conductor 100, enhancing the anti-twisting holding force between the insulator and the outer conductor 100. To ensure uniform stress on the insulator, the plurality of protrusions 120 are generally uniformly disposed along the circumference of the outer conductor 100. The center pin 200 is further clamped and fixed with the first insulator 310 and the second insulator 320, so that the relative positions of the outer conductor 100, the center pin 200, the first insulator 310 and the second insulator 320 of the whole connector are fixed.
The outer conductor 100 is provided with grooves 130 extending axially inward on both axial end surfaces. The slots 130 are uniformly arranged along the circumferential direction of the outer conductor 100, and the plurality of slots 130 form a petal-shaped structure. The arrangement of the slot 130 can decompose the end of the outer conductor 100 into a plurality of elastic sheets slightly popped outwards along the radial direction, when the outer conductor 100 is matched with the inner hole of the other connector, petals are compressed due to extrusion when entering until entering the annular groove of the inner hole of the other connector, the petals are opened, and the convex ring 110 slightly popped outwards of the outer conductor 100 can keep good elastic contact with the inner wall of the groove of the inner hole of the other connector; even if the outer diameter of the outer conductor 100 and the inner diameter of the inner hole of the housing of the other connector are erroneous due to the manufacturing process, the outer conductor 100 and the housing of the other connector can maintain good elastic contact. The electric contact is good, and the radio frequency performance is ensured.
The outer conductor 100 is made of a metal material having elasticity; the center pin 200 is made of a metal material having elasticity, such as beryllium copper, which facilitates the manufacture of the tension member and the press bending member, and facilitates contact when plugging with another connector. The insulator is made of an insulating material having compression resilience, and the insulating material having compression resilience is polytetrafluoroethylene so that the first insulator 310 and the second insulator 320 are fitted into the outer conductor 100, and the center pin 200 is fitted into the first insulator 310 and the second insulator 320.
The middle plate body 302 is provided with a first boss 304 and a second boss 305, the first plate body 301 is rolled to form a first needle portion 320, the second plate body 303 is rolled to form a second needle portion 340, the middle plate body 302 is rolled to form an arc portion 332, and the first boss 304 is bent to form a bending portion 331.
In the hybrid radio frequency connector of the present embodiment:
1) The outer conductor 100 is manufactured by a metal deep drawing integrated forming process, so that the cost is low and the productivity is high;
2) The center needle 200 is manufactured by a process of stamping and then bending, so that the cost is low and the productivity is high; however, considering the characteristics of stamping and bending processes, many material features that can be realized by the machining and turning processes, such as barbs, steps, wall thickness changes and the like, are not made or are not made well, and only some notches, transitions and the like can be made; to accommodate the stamping process characteristics, the mechanical features of the connector can be fabricated with the outer conductor 100, the first insulator 310 and the second insulator 320, and the connector can achieve the radio frequency performance, the following content of 3) is needed;
3) From the perspective of radio frequency transmission, the structure formed by the first pin portion 210, the section Q1 of the first insulator 310 corresponding to the first pin portion 210, and the section Q2 of the outer conductor 100 corresponding to the length of the first pin portion 210 constitute a radio frequency coaxial transmission line, and the structure formed by the second pin portion 230, the section Q3 of the second insulator 320 corresponding to the second pin portion 230, and the section Q4 of the outer conductor 100 corresponding to the length of the second pin portion 230 constitutes a radio frequency coaxial transmission line; the first pin 210 and the second pin 230 are on the same rf coaxial transmission line, and the rf coaxial transmission lines at two ends of the hybrid rf connector of the present invention can be inserted into the corresponding coaxial connectors for signal transmission;
when the center pin 200 is the base, the radio frequency coaxial transmission line is not configured by a structure configured by the middle circular arc portion 223, the section Q5 of the first insulator 310 corresponding to one end of the middle circular arc portion 223, the section Q6 of the second insulator 320 corresponding to one end of the middle circular arc portion 223, and the section Q7 of the outer conductor 100 corresponding to the length of the middle circular arc portion 223, the section of the outer conductor 100 corresponding to the length of the middle circular arc portion 223;
when the center pin 200 is a length-extending member, the structure formed by the divided circular arc portion 224 adjacent to the first pin portion 210, the section Q8 of the first insulator 310 corresponding to one end of the divided circular arc portion 224 adjacent to the first pin portion 210, and the section Q9 of the outer conductor 100 corresponding to the length of the divided circular arc portion 224 adjacent to the first pin portion 210 does not constitute a radio frequency coaxial transmission line; the structure formed by the separation circular arc portion 224 near the second needle portion 230, the section 10 of the second insulator 320 corresponding to one end of the separation circular arc portion 224 near the second needle portion 230, and the section Q11 of the outer conductor 100 corresponding to the length of the separation circular arc portion 224 near the second needle portion 230 does not constitute a radio frequency coaxial transmission line; the length compensation part 225 and the structure formed by the section Q12 of the outer conductor 100 corresponding to the length of the length compensation part 225 form a 50Ω rf coaxial transmission line;
The hybrid rf connector is a hybrid of a structure forming an rf coaxial transmission line and a structure not forming an rf coaxial transmission line, and the structures forming the rf coaxial transmission line at both ends of the hybrid rf connector implement transition and rf matching through the middle portion 220; the bending process after stamping can reach the required characteristics and dimensions, meet the mechanical and assembly requirements, and can reach the radio frequency performance of the connector through optimizing the characteristics and dimensions;
4) Considering that the position of the connecting point of the center needle 200 cannot be on the end face, the length tolerance is affected, and a broken material trace exists to cause poor appearance; for this reason, the connection point of the center needle 200 is set at a non-coaxial position, and it is required to easily connect and disconnect materials, but the connection point of the center needle 200 cannot be set to reduce the radio frequency performance;
5) When the structure of the invention is serialized, the length of the length compensation part 225 of the central needle 200 is changed to be matched with external conductors with different lengths so as to realize connectors with different lengths; the structure formed by the first pin 210, the section Q1 of the first insulator 310 corresponding to the first pin 210, and the section Q2 of the outer conductor 100 corresponding to the length of the first pin 210 constitutes a radio frequency coaxial transmission line, and the structure formed by the second pin 230, the section Q3 of the second insulator 320 corresponding to the second pin 230, and the section Q4 of the outer conductor 100 corresponding to the length of the second pin 230 constitutes a radio frequency coaxial transmission line; the structure formed by the structure of the middle circular arc portion 223, the section Q5 of the first insulator 310 corresponding to one end of the middle circular arc portion 223, the section Q6 of the second insulator 320 corresponding to one end of the middle circular arc portion 223, and the section Q7 of the outer conductor 100 corresponding to the length of the middle circular arc portion 223, which corresponds to the length of the middle circular arc portion 223, does not constitute a radio frequency coaxial transmission line; the structure formed by the divided circular arc portion 224 near the first needle portion 210, the section Q8 of the first insulator 310 corresponding to one end of the divided circular arc portion 224 near the first needle portion 210, and the section Q9 of the outer conductor 100 corresponding to the length of the divided circular arc portion 224 near the first needle portion 210 does not constitute a radio frequency coaxial transmission line; the structure formed by the separation circular arc portion 224 near the second needle portion 230, the section 10 of the second insulator 320 corresponding to one end of the separation circular arc portion 224 near the second needle portion 230, and the section Q11 of the outer conductor 100 corresponding to the length of the separation circular arc portion 224 near the second needle portion 230 does not constitute a radio frequency coaxial transmission line; the length compensation part 225 and the structure formed by the section Q12 of the outer conductor 100 corresponding to the length of the length compensation part 225 form a 50Ω rf coaxial transmission line; The characteristic impedance of the radio frequency coaxial transmission line isD is the inner diameter of the outer conductor, D is the outer diameter of the center pin, epsilon is the relative permittivity of the insulator between the outer conductor 100 and the center pin 300, and epsilon=1 for air. The formula is only established under the structure of the radio frequency coaxial transmission line, the impedance of the structure which does not form the radio frequency coaxial transmission line does not conform to the formula, impedance mismatch is caused by impedance change, and radio frequency signal reflection is very large; impedance matching is necessary; the structure in the invention can realize impedance matching.
The invention is a hybrid radio frequency connector which has the advantages of less consumption of raw materials, short processing time and female pin type at two ends and can be used for connecting two PCB boards.
The radio frequency connector provided by the invention is formed by mixing the stamping part and the stretching part, and the coaxial structure and the non-coaxial structure are combined together, so that the problems of coaxial connectivity, structural realizability, radio frequency performance, low manufacturing cost, high productivity, reliability and consistency are solved. And the same structure is serializable for different lengths.
In conclusion, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A hybrid radio frequency connector, comprising: an outer conductor (100), a center pin (200), a first insulator (310), and a second insulator (320);
the outer conductor (100) is manufactured by adopting a metal deep drawing process;
the central needle (200) comprises a first needle part (210), an intermediate part 220 and a second needle part (230) which are connected in sequence; the central axis of the first needle part (210) is collinear with the central axis of the second needle part (230), and the central axis of the first needle part (210) is the central axis of the central needle (200); the central needle (200) is manufactured by adopting a process of bending a plate with uniform wall thickness after stamping, the first needle part (210) and the second needle part (230) are of a rolling structure, and the middle part (220) is of a bending structure; the center pin (200) is coaxially arranged inside the outer conductor (100); plug holes (201) are formed in the two axial ends of the central needle (200);
Both ends of the center pin (200) are respectively clamped in the first insulator (310) and the second insulator (320), the first insulator (310) and the second insulator (320) are clamped in the outer conductor (100), and the first insulator (310) and the second insulator (320) are coaxially arranged with the outer conductor (100); the length direction of the center needle (200) is in the same direction as the axial direction of the center needle (200), a plane passing through the midpoint of the length of the center needle (200) and perpendicular to the central axis of the center needle (200) is a central axis, and the hybrid radio frequency connector is of a mirror-symmetrical structure with the central axis as a symmetrical plane;
the central needle (200) is a basic money piece or a length extending money piece;
when the center pin (200) is the base money, the intermediate portion (220) includes: an intermediate circular arc portion (223), wherein both axial ends of the intermediate circular arc portion (223) are respectively connected with the first needle portion (210) and the second needle portion (230), and the central axis of the intermediate circular arc portion (223) is collinear with the central axis of the central needle (200);
when the center pin (200) is a length-extending piece, the intermediate portion (220) includes: the device comprises two separation arc parts (224), wherein a length compensation part (225) is arranged between the two separation arc parts (224), and the length compensation part (225) is of a rolling structure; one ends of the two separation arc parts (224) far away from the length compensation part (225) are respectively connected with the corresponding first needle part (210) and second needle part (230), and the central axis of the separation arc parts (224) and the central axis of the length compensation part (225) are both collinear with the central axis of the central needle (200);
The middle part (220) further comprises a first limit part (221) and a second limit part (222) which are sequentially arranged along the length direction of the center needle (200); the first limiting portion (221) is closer to the first needle portion (210) than the second limiting portion (222); the first insulator (310) is in contact with the first limiting part (221), and the second insulator (320) is in contact with the second limiting part (222);
when the central needle (200) is a basic money piece, the first limiting part (221) and the second limiting part (222) are arranged on the middle circular arc part (223);
when the central needle (200) is a length extension type piece, the middle part (220) further comprises a first limiting part (221) and a second limiting part (222) which are respectively arranged on the two separation arc parts (224).
2. The hybrid radio frequency connector according to claim 1, wherein:
the first limiting part (221) and the second limiting part (222) have the same structure;
when the central needle (200) is the basic money, the first limiting part (221) comprises a convex blocking piece (2211) arranged on the circumferential end surface of the middle circular arc part (223);
when the central needle (200) is a length-extending piece, the first limiting portion (221) includes a protruding stopper (2211) provided on the circumferential end surface of the dividing circular arc portion (224).
3. The hybrid radio frequency connector according to claim 2, wherein:
when the central needle (200) is the basic money, the first limiting part (221) further comprises an auxiliary protruding part (2212) arranged on the outer side surface of the middle circular arc part (223), and the distance between the auxiliary protruding part (2212) of the first limiting part (221) and the first needle part (210) is equal to the distance between the protruding blocking part (2211) of the first limiting part (221) and the first needle part (210);
when the central needle (200) is a length extension type piece, the first limiting portion (221) further comprises an auxiliary protruding piece (2212) arranged on the outer side face of the separation arc portion (224), and the distance between the auxiliary protruding piece (2212) of the first limiting portion (221) and the first needle portion (210) is equal to the distance between the protruding blocking piece (2211) of the first limiting portion (221) and the first needle portion (210).
4. The hybrid radio frequency connector according to claim 1, wherein:
when the central needle (200) is the basic money, the joint of the first needle part (210) and the opening (2231) of the middle circular arc part (223) are positioned on the same side of the central needle (200), a plane perpendicular to the middle shaft surface is a first bisector surface through the central axis of the first needle part (210) and the opening (2231) of the middle circular arc part (223), and the middle part (220) is symmetrically arranged by taking the first bisector surface as a symmetrical surface;
When the central needle (200) is a length extension type piece, the splicing part of the length compensation part (225), the splicing part of the first needle part (210) and the opening part (2241) of the separation circular arc part (224) are all positioned on the same side of the central needle (200), the central axis of the first needle part (210) and the opening part (2241) of the separation circular arc part (224) are passed through, and the plane perpendicular to the central axis surface is a second bisection surface, and the middle part (220) is symmetrically arranged by taking the second bisection surface as a symmetrical surface.
5. The hybrid radio frequency connector according to claim 1, wherein: the structure of the first insulator (310) is the same as that of the second insulator (320), the first insulator (310) is a hollow cylinder, two ends of the center needle (200) are respectively inserted into the inner walls of the first insulator (310) and the second insulator (320), and an annular notch part (311) is arranged on the outer peripheral side surface of the first insulator (310).
6. The hybrid radio frequency connector according to claim 1, wherein:
the first needle part (210) comprises a first needle body (211) and a plurality of blades (212) which are arranged at intervals on one end of the first needle body (211) which is far away from the middle part 220;
The second needle part (230) comprises a second needle body (231) and a plurality of blades (212) which are arranged at intervals on one end of the second needle body (231) which is far away from the middle part 220;
all the blades (212) on the first needle body (211) and all the blades (212) on the second needle body (231) enclose the insertion hole (201).
7. The hybrid radio frequency connector according to claim 6, wherein: the first needle body (211) and the second needle body (231) are provided with linear splicing seams (202).
8. The hybrid radio frequency connector according to claim 1, wherein: convex rings (110) protruding outwards along the radial direction are arranged on the two axial end faces of the outer conductor (100);
an inner wall of the outer conductor (100) is provided with a plurality of inward protruding parts (120) which press the first insulator (310) and the second insulator (320);
the two axial end faces of the outer conductor (100) are provided with grooves (130) extending inwards along the axial direction.
9. The hybrid radio frequency connector according to claim 1, wherein: the outer conductor (100) and the center pin (200) are made of elastic metal materials.
10. The hybrid radio frequency connector according to claim 1, wherein: the first insulator (310) and the second insulator (320) are each made of an insulating material having a compression resilience.
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| CN201810776828.4A CN109728458B (en) | 2018-07-13 | 2018-07-13 | Hybrid radio frequency connector |
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| CN201810776828.4A CN109728458B (en) | 2018-07-13 | 2018-07-13 | Hybrid radio frequency connector |
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| CN109728458B true CN109728458B (en) | 2023-09-26 |
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| CN110932010B (en) * | 2019-12-11 | 2021-10-15 | 四川华丰科技股份有限公司 | Coaxial connector contact element and manufacturing method thereof |
| CN110867708B (en) * | 2019-12-11 | 2021-06-18 | 四川华丰科技股份有限公司 | Coaxial connector |
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| Publication number | Publication date |
|---|---|
| CN109728458A (en) | 2019-05-07 |
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