CN211088579U - Radio frequency plug - Google Patents

Abstract

A radio frequency plug comprises a metal insert, a plurality of conductive terminals, an insulating base body which fixes the metal insert and the conductive terminals into a whole, a cable assembly which is assembled on the insulating base body and is electrically connected with the conductive terminals, and a shielding shell which covers the top surface and the outer side surface of the insulating base body, wherein the insulating base body comprises a butt joint end which is provided with a plurality of terminal grooves and an inner inserting space in the vertical direction, a rear extension part which is formed by extending backwards from the butt joint end and an extension arm which is formed by extending backwards from the transverse two sides of the rear extension part, and the conductive terminals comprise fixing parts which are formed in the rear extension part, elastic contact arms which extend forwards from the fixing parts to the terminal grooves and welding pins which extend backwards from the fixing parts. The radio frequency plug can reduce the welding difficulty.

Description

Radio frequency plug

Technical Field

The present application relates to the field of rf connectors, and more particularly, to an rf plug.

Background

A PCB of an existing mobile phone generally has a radio frequency connector connected to a coaxial cable to transmit radio frequency signals, such as antenna signals and high frequency signals between different boards; in the 5G communication era, multi-antenna transmission is required, and the traditional single-channel radio frequency connector cannot meet the requirement; in the existing alternatives, a technical solution for implementing multi-channel transmission of antenna signals by using a board-to-board connector appears.

The patent No. 201910206829 to X of the people's republic of china discloses a cable connector device for transmitting multi-channel antenna signals through coaxial line combination. Including insulator, integrated into one piece in conductive terminal and sheetmetal, shielding shell and cable subassembly in the insulator, ground terminal includes a plurality of signal terminals and will the spaced apart ground terminal of signal terminal, the leg of signal terminal and ground terminal all extends to the insulator rear end is arranged into one row, the heart yearn of cable subassembly arrange into one row with the leg welding is as an organic whole, because of the terminal interval is very little, when the welding, leads to the leg short circuit scheduling problem easily. The cable subassembly includes soldering lug, last soldering lug and centre gripping in the cable between soldering lug and the last soldering lug down, there is not limit structure between the cable, causes the cable dislocation easily.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a radio frequency plug that solves the problem of short circuit easily occurring when the conductive terminals are arranged in a row for welding operation.

In order to solve the above technical problem, the present application provides a radio frequency plug, including a metal insert, a plurality of conductive terminals, an insulating base integrally holding the metal insert and the conductive terminals, a cable assembly assembled on the insulating base and electrically connected to the conductive terminals, and a shielding housing covering the top surface and the outer side surface of the insulating base, wherein the insulating base includes a butt joint end having a plurality of terminal slots and an inner insertion space in the vertical direction, a rear extension portion formed by extending backward from the butt joint end, and an extension arm formed by extending backward from the lateral sides of the rear extension portion, the conductive terminal includes a holding portion formed in the rear extension portion, an elastic contact arm extending forward from the holding portion to the terminal slot, and a solder leg formed by extending backward from the holding portion, the conductive terminal includes a plurality of signal terminals and a ground terminal separating the signal terminals, the welding leg of the signal terminal extends to the upper surface of the rear extending part, and the welding leg of the grounding terminal extends to the rear lower part of the welding leg of the signal terminal and is electrically connected with the metal insert.

Preferably, the metal insert comprises a plate body portion provided with a front plate portion and a rear plate portion and an embedded portion formed by upwards bending and extending the two transverse sides of the rear plate portion, the embedded portion is formed in the extension arm, the front plate portion is formed in the rear extension portion, and an assembling and positioning clamping space for the cable assembly is formed between the pair of extension arms on the upper surface of the rear plate portion.

Preferably, the rear extension portion includes a plurality of lands accommodating the solder tails of the signal terminals and a plurality of protrusions separating the lands, and the solder tails of the ground terminals extend to the rear lower side of the protrusions.

Preferably, a plurality of tin containing grooves and inclined parts are arranged on two transverse sides of the welding table, and the inclined parts are positioned in front of the tin containing grooves.

Preferably, the butt joint end includes the roof and from the bulge that the roof bulges downwards and form, the terminal groove runs through the roof with the bulge forms, the butt joint end is equipped with a plurality of on longitudinal direction with the isolated jube in the terminal groove, the butt joint end is close to back extension one side has seted up interior grafting space, the shielding shell including cover in the upper cover plate of insulating pedestal top surface and enclose the shielding frame of locating the front side of insulating pedestal and horizontal outside, form outer plug-in space between shielding frame and the bulge.

Preferably, the elastic contact portion extends forward from the holding portion, and the elastic contact portion includes a first elastic arm extending obliquely forward and downward, a second elastic arm bending downward and extending from a front end of the first elastic arm, a third elastic arm extending obliquely rearward and upward from a tail end of the second elastic arm, a bent end portion bending forward and upward from a tail end of the third elastic arm, and a contact portion formed at a bent position of the third elastic arm and the bent end portion.

Preferably, a portion of the first resilient arm, a portion of the second resilient arm, and a portion of the third resilient arm of the resilient contact arm are respectively located in the terminal groove and separated by the partition, and the contact portion is exposed rearward in the inner insertion space.

Preferably, the holding portion of the conductive terminal is bent obliquely to the rear lower side to form a sinking portion, the solder leg of the ground terminal is bent downward from the rear end of the holding portion and then horizontally extends to form the grounding terminal, a step portion is formed between the solder leg of the ground terminal and the holding portion in a bending manner, and the step portion is formed in the protrusion of the backward extending portion.

Preferably, the cable assembly includes a plurality of cables and a cable holder holding the plurality of cables, the cable holder spacing the cables apart.

Preferably, the cable support comprises a lower soldering lug, the lower soldering lug is provided with a wire slot or a convex hull for limiting the cable, and the lower soldering lug is fixed with the rear plate part of the metal insert in a spot welding manner.

According to the radio frequency socket, the metal insert and the conductive terminals are formed in one-step injection molding mode, and the welding pins of the signal terminals and the grounding terminals are staggered in the vertical direction and the longitudinal direction respectively, so that the problem that in the prior art, the short circuit between the conductive terminals is easily caused due to the fact that the intervals are too small because the welding pins of all the conductive terminals are arranged in a row and are welded is solved; meanwhile, the welding leg of the grounding terminal is directly in electrical contact with or welded with the metal insert, and a cable does not need to be connected, so that the cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective assembly view of the rf plug of the present application;

FIG. 2 is a perspective assembly view of the RF plug of the present application from another angle;

FIG. 3 is an exploded perspective view of the RF plug of the present application;

fig. 4 is a perspective view of a conductive terminal of the radio frequency plug of the present application;

FIG. 5 is a perspective view of the metal insert, the conductive terminals and the insulating base of the RF plug of the present application;

fig. 6 is a perspective assembly view of the metal insert, the conductive terminal and the insulating base of the rf plug of the present application at another angle;

fig. 7 is a perspective assembly view of the rf plug of the present application with the shielding shell removed;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 9 is a cross-sectional view taken along the line B-B in FIG. 1;

FIG. 10 is a perspective assembly view of a first embodiment of a cable assembly of the RF plug of the present application;

fig. 11 is a perspective assembly view of the rf plug of the present application after solder removal according to an embodiment of the cable assembly.

Fig. 12 is a perspective assembly view of a second embodiment of the cable assembly of the rf plug of the present application;

FIG. 13 is a cross-sectional view taken along the line C-C shown in FIG. 12;

fig. 14 is a perspective assembly view of a third embodiment of the cable assembly of the rf plug of the present application;

fig. 15 is a perspective view of the lower solder tab of a third embodiment of the cable assembly of the rf plug of the present application;

fig. 16 is a sectional view taken along the dotted line D-D shown in fig. 14.

Description of the main Components

A shielding shell-10; an upper cover plate-11; a shielding frame-12; an insulating base body-20; butt-joint end-21; a bottom wall-211; a projection-212; barrier-213; terminal slot-214; an extension arm-22; interpolation space-23; a rear extension-24; a soldering station 241; a protrusion-242; a tin containing groove-243; an inclined portion-244; cladding-245; a metal insert-30; a plate body portion-31; a front plate portion-311; a rear plate portion-312; an insert portion-32; a conductive terminal-40; signal terminal-40 a; a ground terminal-40 b; a holding portion-41; a solder tail-42; a step-421; a resilient contact arm-43; a first resilient arm-431; a second resilient arm-432; a third resilient arm-433; bent end-434; a contact portion-435; a countersink-44; a cable holder-50; lower bonding pad-51; a clamping bottom wall-511; a vertical portion-512; a lower convex hull-513; a sidewall-517; a connecting boss-518; a wire chase-519; upper bonding pad-52; a clamping top wall-521; an upper convex hull-522; solder or conductive paste-53; a cable-C; center conductor-C1; inner insulating layer-C2; knit-C3; outer insulating layer-C4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

The definition of the direction in the present application is based on fig. 1, and the X direction is the front of the front-back direction (longitudinal direction), the Y direction is the right of the left-right direction (lateral direction), and the Z direction is the upper of the up-down direction (left-right direction).

Referring to fig. 1 to 3, a radio frequency plug according to the present invention includes an insulating base 20, a metal insert 30 and a plurality of conductive terminals 40 formed in the insulating base 20, a cable assembly connected to the conductive terminals 40, and a shielding shell 10 covering the insulating base 20.

The metal insert 30 includes a plate body portion 31 having a front plate portion 311 and a rear plate portion 312, and an insertion portion 32 formed by bending and extending upward from both lateral sides of the rear plate portion 312.

Referring to fig. 3 to 9, the insulation base 20 includes a butt end 21, a backward extending portion 24 formed by extending backward from the butt end 21, and a pair of extending arms 22 formed by extending backward from two lateral sides of the backward extending portion 24. The mating terminal 21 includes a top wall 211, a protrusion 212 formed to extend downward from the top wall 211, a plurality of terminal slots 214 formed through the top wall 211 and the protrusion 212, a plurality of partitions 213 partitioning the terminal slots 214 in a longitudinal direction, and an inner insertion space 23 formed to be recessed upward at a bottom of the partitions 213 near the rear extension 24. The extending part 24 includes a plurality of soldering lands 241, a plurality of protrusions 242 formed between the soldering lands 241, solder receiving grooves 243 formed at both lateral sides of the soldering lands 242, and a plurality of inclined parts 244 provided on the protrusions 242 at both lateral sides of the soldering lands 241. The inclined portion 244 is located in front of the tin containing groove 243.

The extension arm 22 is formed by extending backward from two lateral sides of the backward extending portion 24, and the metal insert 30 is integrally formed in the backward extending portion 24 of the insulation base 20 and the extension arm 22. The embedded portions 32 on the two lateral sides of the metal insert 30 are formed in the extension arms 22, the plate body portion 31 is formed on the lower sides of the rear extension portion 24 and the two extension arms 22, the front plate portion 311 is formed in the rear extension portion 24, and the rear extension portion 24 further includes a coating portion 245 which coats the front plate portion 311 at the bottom. A clamping space S3 for assembling and positioning the cable assembly is formed above the rear plate portion 312 between the two extension arms 22. In particular, the insertion portion 32 of the metal insert 30 may be exposed to the clamping space S3 and electrically contact the cable assembly. The width of the rear extension 24 is less than the width between the two extension arms 22.

The conductive terminal 40 includes a number of signal terminals 40a and ground terminals 40b that space the signal terminals 40a apart. Each conductive terminal 40 includes a holding portion 41 formed in the rear extension portion 24, a solder leg 42 formed extending rearward from the holding portion 41, and a resilient contact arm 43 extending forward from the holding portion 41 into the terminal slot 214. The elastic contact arm 43 is suspended in the terminal groove 214, and the elastic contact arm 43 includes a first elastic arm 431 extending obliquely forward and downward, a second elastic arm 432 bent and extending downward from a front end of the first elastic arm 431, a third elastic arm 433 extending obliquely rearward and upward from a distal end of the second elastic arm 432, a bent end portion 434 bent forward and upward from a distal end of the third elastic arm 433, and a contact portion 435 formed at a bent position where the third elastic arm 433 and the bent end portion 434 are bent. The rear end of the holding part 41 extends obliquely downward to form a sinking part 44, and the solder leg 42 is formed at the rear end of the holding part 41. The width of the dip portion 44 is smaller than that of the holding portion 41 to improve transmission of high frequency signals. The solder leg 42 of the ground terminal 40b is formed by bending downward from the tail of the holding portion 41 and then extending horizontally backward, and the horizontal position of the solder leg 42 of the ground terminal 40b is lower than that of the solder leg 42 of the signal terminal 40 a. Thus, a stepped portion 421 is formed at the rear end of the holding portion 41 of the ground terminal 40b by bending downward.

A portion of the first elastic arm 431, a portion of the second elastic arm 432 and a portion of the third elastic arm 433 of the elastic contact arm 43 are respectively separated by the partition 213, and the contact portion 435 is exposed rearward in the inner insertion space 23.

The depressed portion 44 is embedded in the extending portion 24, and the solder tail 42 of the signal terminal 40a is located on the surface of the land 241 of the extending portion 24. The solder leg 42 of the ground terminal 40b extends downward to the upper surface of the rear plate portion 312 and electrically contacts or is welded with the rear plate portion 312, and the fixing portion 41 of the ground terminal 40b extends rearward along the protrusion 242 and is embedded in the protrusion 242, so that the signal terminal 40a and the solder leg 42 of the ground terminal 40b are dislocated in the vertical direction and the longitudinal direction to facilitate welding operation, and short circuit caused by insufficient space is avoided.

The shielding shell 10 includes an upper cover plate 11 covering the upper side of the insulating base 20 and a shielding frame 12 bent downward from the front end of the upper cover plate 11 and then wrapped around the insulating base 20. An outer plugging space S1 is formed between the protrusion 212 of the insulating base 20 and the shielding outer frame 12, and the top surface of the outer plugging space S1 is the top wall 211.

The metal insert 30 and the conductive terminal 40 are injection-molded at one time on the insulating base 20, when injection-molded, the metal insert 30 is connected with a first material belt (not shown) backwards, the conductive terminal 40 is connected with a second material belt (not shown) backwards through a solder leg 42, the first material belt and the second material belt are overlapped and fixed together in a vertical direction for positioning, and a second material belt part connected with the solder leg 42 of the signal terminal 40a is tightly attached to the surface of the plate body part 31 of the metal insert 30 in a downward bending manner so as to be in the same plane with the solder leg 42 of the grounding terminal 40 b.

The radio frequency socket is formed by injection molding the metal insert 30 and the conductive terminals 40 at one time, and the welding feet of the signal terminal 40a and the grounding terminal 40b are staggered in the vertical direction and the longitudinal direction respectively, so that the problem that in the prior art, the short circuit between the conductive terminals 40 is easily caused by over-small intervals because the welding feet of all the conductive terminals 40 are arranged in a row and are welded is solved; meanwhile, the solder leg 42 of the ground terminal 40b is directly electrically contacted or soldered with the metal insert 30, and no cable C needs to be connected, which is beneficial to cost reduction.

Fig. 10-16 illustrate three embodiments of the cable assembly of the present application, which will be described in greater detail separately below;

fig. 10 and 11 are explanatory drawings of the first cable assembly according to the first embodiment, the first cable assembly according to the first embodiment includes a cable holder 50 and a plurality of cables C fixed in the cable holder 50, the cables C are coaxial cables, and each cable C includes a central conductor C1, an inner insulating layer C2 covering the central conductor C1, a braided layer C3 covering the outer periphery of the inner insulating layer C2, and an outer insulating layer C4 covering the braided layer C3. The cable holder 50 includes a lower lug 51 and an upper lug 52 for holding the braid C3 of the cable C therebetween, and a solder 53 filled between the lower lug 51 and the upper lug 52 and covering the braid C3. The soldering tin 53 firmly welds the lower soldering lug 51, the upper soldering lug 52 and the braided layer C3 into a whole.

The lower soldering lug 51 comprises a clamping bottom plate 511, vertical parts 512 formed by bending and extending upwards from two transverse ends of the clamping bottom plate 511, and a lower convex bag 513 formed by stamping upwards from the clamping bottom plate 511 and used for spacing the woven layer C3. The upper soldering lug 52 is a clamping top plate 521, and the clamping top plate 521 is punched downwards to form an upper convex bag 522 for spacing the woven layer C3. The both lateral ends of the clamping top plate 521 are caught between the vertical portions 512 of the lower bonding pad 51. The upper convex hull 522 and the lower convex hull 513 space the braid C3 apart to facilitate positioning of the cable C.

After the cable C is fixed by the cable holder 50, the cable holder 50 is inserted into the clamping space S3 above the plate portion 31, so that the vertical portion 512 is clamped between the pair of embedding portions 32 of the metal insert 30 and electrically contacted.

The center conductor C1 of the cable C extends above the solder tail 42 of the signal terminal 40a and is soldered. Subsequently, the shielding shell 10 is covered outside the insulating base 20, the upper soldering terminal 52 is fixed to the upper cover plate 11 of the shielding shell 10 by spot welding, and the lower soldering terminal 51 is fixed to the upper surface of the plate body portion 31 of the metal insert 30 by spot welding.

Fig. 12 and 13 are explanatory views of a second embodiment of the cable assembly, which is different from the first embodiment in that the upper soldering lug 52 is eliminated, a soldering tip groove 531 is formed directly above the soldering tin 53, the soldering tip is pressed downward into the soldering tin 53 to fit the lower convex hull 513 to partition and limit the braid C3 of the cable C during soldering, and the soldering tip groove 531 functions in accordance with the upper convex hull 522 of the upper soldering lug 52 in the first embodiment. The upper surface of the solder 53 is flush with the upper surface of the upright portion 512.

Therefore, in the second embodiment, the parts and components can be further removed, and the cost is reduced.

Fig. 14 to 16 are explanatory views of a third embodiment of the cable assembly, different from the second embodiment, the lower soldering lug 51 is in a wave-shaped design in the transverse direction, and includes a plurality of wire grooves 519 for accommodating and limiting the braided layer C3, a plurality of connecting protrusions 518 located between the wire grooves 519, and a side wall 517 located on the transverse outer side of the lower soldering lug 51, and the horizontal position of the top 516 of the side wall 517 is higher than the horizontal position of the connecting protrusion 518.

In this embodiment, the soldering tin 53 can be replaced by a conductive adhesive, and in this embodiment, the cable C and the lower soldering lug 51 are directly fixed by the conductive adhesive 53 without performing a soldering operation. The upper surface of the conductive paste 53 is flush with the top 516 of the sidewall 517.

Set up a plurality of spacings on cable support 50 of this application cable subassembly the spacing isolation structure of weaving layer C3 of cable C makes cable C keeps the correct position, avoids cable C not hard up dislocation and influence center conductor C1 with the relative contact position of signal terminal 40 a's leg 42.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A radio frequency plug comprises a metal insert, a plurality of conductive terminals, an insulating base body which fixes the metal insert and the conductive terminals into a whole, a cable assembly which is assembled on the insulating base body and is electrically connected with the conductive terminals, and a shielding shell which covers the top surface and the outer side surface of the insulating base body, wherein the insulating base body comprises a butt joint end which is provided with a plurality of terminal grooves and an inner inserting space in the vertical direction, a rear extension part which is formed by extending backwards from the butt joint end and an extension arm which is formed by extending backwards from the transverse two sides of the rear extension part, the conductive terminals comprise fixing parts which are formed in the rear extension part, elastic contact arms which extend forwards from the fixing parts to the terminal grooves and welding pins which extend backwards from the fixing parts, and the conductive terminals comprise a plurality of signal terminals and grounding terminals which separate the signal terminals, the grounding terminal is characterized in that the welding leg of the signal terminal extends to the upper surface of the rear extending part, and the welding leg of the grounding terminal extends to the rear lower part of the welding leg of the signal terminal and is electrically connected with the metal insert.

2. The rf plug of claim 1, wherein the metal insert includes a plate portion having a front portion and a rear portion, and an insertion portion formed by bending upward from two lateral sides of the rear portion, the insertion portion is formed in the extension arm, the front portion is formed in the rear portion, and a clamping space for assembling and positioning the cable assembly is formed between a pair of the extension arms on an upper surface of the rear portion.

3. The radio frequency plug of claim 2, wherein the rear extension includes lands that receive the solder tails of the signal terminals and projections that space the lands, the solder tails of the ground terminals extending below and behind the projections.

4. The radio frequency plug of claim 3, wherein the soldering station is provided at lateral sides thereof with a plurality of solder receiving grooves and inclined portions, the inclined portions being located in front of the solder receiving grooves.

5. The radio frequency plug of claim 3, wherein the mating terminal includes a top wall and a protrusion protruding downward from the top wall, the terminal slot is formed through the top wall and the protrusion, the mating terminal is provided with a plurality of partitions separating the terminal slot in a longitudinal direction, an inner insertion space is formed at a side of the mating terminal close to the rear extension, the shielding housing includes an upper cover plate covering a top surface of the insulating housing and a shielding frame surrounding a front side and a lateral outer side of the insulating housing, and an outer insertion space is formed between the shielding frame and the protrusion.

6. The radio frequency plug according to claim 5, wherein the elastic contact portion is formed by extending forward from the holding portion, and the elastic contact portion includes a first elastic arm extending obliquely forward and downward, a second elastic arm extending by bending downward from a front end of the first elastic arm, a third elastic arm extending obliquely rearward and upward from a rear end of the second elastic arm, a bent end portion formed by bending forward and upward from a rear end of the third elastic arm, and a contact portion formed at a bent position of the third elastic arm and the bent end portion.

7. The radio frequency plug of claim 6, wherein a portion of the first resilient arm, a portion of the second resilient arm, and a portion of the third resilient arm of the resilient contact arm are respectively positioned in the terminal slot and separated by the partition, and the contact portion is rearwardly exposed in the inner plug-in space.

8. The radio frequency plug according to claim 5, wherein the holding portion of the conductive terminal is bent obliquely rearward and downward to form a depressed portion, the solder leg of the ground terminal is bent downward from the rear end of the holding portion and then horizontally extended, a step portion is formed between the solder leg of the ground terminal and the holding portion by bending, and the step portion is formed in the protrusion of the extended portion.

9. The radio frequency plug of claim 2, wherein the cable assembly includes a plurality of cables and a cable holder that holds the plurality of cables, the cable holder spacing apart the cables.

10. The radio frequency plug of claim 9, wherein the cable support includes a lower solder tab, the lower solder tab is provided with a lower convex hull or a wire groove for limiting the cable, and the lower solder tab is fixed to the rear plate portion of the metal insert by spot welding.

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