CN211088577U - Radio frequency plug - Google Patents

Abstract

A radio frequency plug comprises an insulating base body, a plurality of conductive terminals, a forming block and a shielding shell, wherein the insulating base body is integrally formed with a metal insert, the conductive terminals are assembled on the insulating base body, the conductive terminals are formed and fixed on the forming block on the insulating base body, the shielding shell covers the outside of the insulating base body, the insulating base body comprises a butt joint end, a rear extension portion and an extension arm, the butt joint end is provided with a plurality of terminal grooves and an inner plugging space in the vertical direction, the rear extension portion is formed by extending backwards from the butt joint end, the extension arm is formed by extending backwards from the transverse two sides of the rear extension portion, the conductive terminals comprise fixing portions formed between the rear extension portion and the forming block, welding pins formed at the tail portion of the fixing portions and elastic contact arms extending forwards to the terminal grooves, and the rear extension portion is close to one. The radio frequency plug is convenient for secondary injection molding to form the forming block and prevent the force arm of the conductive terminal from being overlong.

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. The grounding terminal comprises a plurality of signal terminals and grounding terminals for spacing the signal terminals, wherein the signal terminals and the grounding terminals of the grounding terminals extend to the rear end of the insulating body and are arranged in a row, and the grounding terminals still need to be welded with cables, so that the problem of extremely high welding precision requirement caused by small space among the welding pins is solved. The technical scheme of fixing the conductive terminal by adopting the secondary injection molding mode needs to form a supporting isolation part of the elastic contact arm on the front end of the holding part of the conductive terminal in a forward protruding mode so as to prevent the elastic contact arm from contacting the shielding shell to cause short circuit when the elastic contact arm works and rebounds, but the technical problem that the conductive terminal cannot be sealed from the upper side if the elastic contact arm is in the forward protruding mode is solved.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a radio frequency plug that solves the technical problems of spring-up short circuit of the elastic contact arm of the conductive terminal and the difficulty of molding the molding compound by the second injection molding.

In order to solve the above technical problem, the present application provides a radio frequency plug, including an insulating base body integrally formed with a metal insert, a plurality of conductive terminals assembled on the insulating base body, a forming block fixed on the insulating base body for forming the conductive terminals, and a shielding housing covering the insulating base body, wherein the insulating base body includes a butt end provided with a plurality of terminal grooves and an inner plugging space in a vertical direction, a rear extension portion formed by extending backward from the butt end, and an extension arm formed by extending backward from both lateral sides of the rear extension portion, the conductive terminals include a holding portion formed between the rear extension portion and the forming block, a solder leg formed at the tail portion of the holding portion, and an elastic contact arm extending forward from the holding portion to the terminal groove, the rear extension portion is provided with a filling hole penetrating up and down near one side of the inner plugging space, the forming block comprises a filling part filled into the filling hole, an upper convex part positioned above the filling part, a plurality of front convex parts and a plurality of notches, the front convex parts are formed at the front ends of the upper convex parts, the front convex parts are correspondingly positioned above the fixing part and extend into the inner inserting space by crossing the rear wall surface of the inner inserting space, and the notches are recessed backwards to the rear end of the rear wall surface of the inner inserting space.

Preferably, the shielding housing includes an upper cover plate covering the insulating base and the forming block, and a shielding frame surrounding the front side and the two lateral sides of the insulating base, the number of the front protrusions corresponds to the number of the conductive terminals, and the front protrusions are located between the front ends of the holding portions of the conductive terminals and the upper cover plate to provide elastic supporting points close to the elastic contact arms.

Preferably, the front protrusion has a lateral width smaller than that of the holding portion of the conductive terminal, and the front protrusion is spaced apart from the notch.

Preferably, an avoiding part is formed at the lower side of the front end of the upper convex part of the forming block, and the avoiding part accommodates the part of the backward extending part in front of the filling hole.

Preferably, the conductive terminal includes a plurality of signal terminals and a ground terminal separating the signal terminals, the metal insert includes a plate body portion having a front plate portion and a rear plate portion, the front plate portion is formed in the rear extension portion, and a boss electrically connected to the solder leg of the ground terminal is integrally formed on the front plate portion at a position corresponding to the solder leg of the ground terminal.

Preferably, the boss includes a bent connecting portion bent backward from a front end of the front plate portion, a contact platform extending horizontally backward from the bent connecting portion, and a support end portion bent from a rear end of the contact platform toward an upper surface of the front plate portion, and the support end portion is supported on the upper surface of the front plate portion.

Preferably, the radio frequency plug further comprises a cable assembly, the metal insert further comprises a rear plate portion and an embedded portion formed by bending and extending upwards from two lateral sides of the rear plate portion, the embedded portion is formed in the extension arm, and a clamping space for assembling and positioning the cable assembly is formed between the pair of extension arms on the upper surface of the rear plate portion.

Preferably, the butt joint end includes a top wall and a protruding portion protruding downward from the top wall, the terminal groove penetrates through the top wall and is formed with the protruding portion, a plurality of partition bars separating the terminal groove are arranged on the butt joint end in the longitudinal direction, an inner insertion space is formed on one side of the butt joint end close to the rear extending portion, and an outer insertion space is formed between the shielding frame and the protruding portion.

Preferably, the elastic contact portion extends forward from the holding portion, and includes a first elastic arm extending obliquely forward and downward, a second elastic arm extending 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 a rear end of the third elastic arm forward and upward, and a contact portion formed at a bent position of the third elastic arm and the bent end portion, where a portion of the first elastic arm, a portion of the second elastic arm, and a portion of the third elastic arm of the elastic contact arm are located in the terminal groove and separated by the partition, and the contact portion is exposed rearward in the internal insertion space.

Preferably, the rear extending portion of the insulating base body is provided with a terminal limiting groove corresponding to the terminal groove in the longitudinal direction, the holding portion of the conductive terminal is assembled and fixed in the terminal limiting groove, one side of the rear extending portion, which is far away from the butt joint end, is provided with a plurality of welding stages for accommodating the welding feet of the conductive terminal and protrusions for spacing the welding stages, and the longitudinal two ends of the filling hole are respectively provided with a plurality of clamping blocks at the transverse two sides of the terminal limiting groove in a protruding manner so as to fix the conductive terminal.

This application is in injection moulding during the shaping piece, the mould benevolence of mould can pass through notch crimping downwards in realize gluing in the back portion of extending behind the back wall rear, simultaneously, the front convex part is located fixing portion top of conductive terminal is in order to provide and is closer to the elasticity fulcrum of elasticity contact arm one side avoids the arm of force overlength and leads to when pegging graft conductive terminal upwards cause during deformation with the problem of upper cover plate short circuit.

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 a metal insert of the RF plug of the present application;

fig. 6 is a perspective assembly view of the metal insert and the insulating base of the rf plug of the present application;

fig. 7 is a perspective assembly view of the metal insert and the insulating base of the rf plug of the present application at another angle;

fig. 8 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. 9 is a perspective assembly view of the rf plug of the present application with the shield shell removed;

fig. 10 is a perspective view of a shaped block of the rf plug of the present application;

FIG. 11 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 12 is a perspective assembly view of a cable assembly of the rf plug of the present application;

fig. 13 is a perspective assembly view of the cable assembly of the rf plug of the present application with solder removed.

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; rear wall-218; an extension arm-22; interpolation space-23; a rear extension-24; a soldering station 241; a protrusion-242; fill hole-243; a latch-244; cladding-245; terminal retention grooves-246; a metal insert-30; a plate body portion-31; a front plate portion-311; a rear plate portion-312; an insert portion-32; a boss-33; bending the connecting part-331; a contact mesa-332; support end-333; a conductive terminal-40; signal terminal-40 a; a ground terminal-40 b; a holding portion-41; a solder tail-42; 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; upper bonding pad-52; a clamping top wall-521; an upper convex hull-522; solder or conductive paste-53; molding block-60; a filling part-61; an upper convex portion 62; a recess-621; a front bump-622; an evacuation portion-63; 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 integrated with the insulating base 20, a cable assembly connected to the conductive terminals 40, and a shielding shell 10 covering the insulating base 20.

Referring to fig. 4 to 11, the metal insert 30 includes a plate 31 having a front plate 311 and a rear plate 312, an insert 32 formed by bending and extending upward from two lateral sides of the rear plate 312, and a plurality of bosses 33 integrally formed above the front plate 311. The boss 33 is a strip-shaped body bent from the front end of the front plate 311 in the reverse direction and extending rearward above the front plate 311, and the boss 33 includes a bent connecting portion 331 bent from the front end of the front plate 311 in the reverse direction, a contact surface 332 extending rearward from the bent connecting portion 331, and a support end portion 333 bent downward from the rear end of the contact surface 332 and supported on the upper surface of the front plate 311.

In another embodiment, the boss 33 may be formed by punching and tearing the front plate 311 upward from the front plate 311.

Referring to fig. 5, 6 and 10, the insulation base 20 includes a mating end 21, a rear extension portion 24 formed by extending backward from the mating end 21, and a pair of extension arms 22 formed by extending backward from two lateral sides of the rear extension portion 24. The docking terminal 21 includes a top wall 211, a protrusion 212 formed to extend downward from the top wall 211, a plurality of terminal grooves 214 formed through the top wall 211 and the protrusion 212, a plurality of partitions 213 partitioning the terminal grooves 214 in a longitudinal direction, and an inner insertion space 23 penetrating the top wall 211 and the protrusion 212 and located behind the partitions 213. A plurality of terminal limiting grooves 246 are formed on the upper surface of the rear extension portion 24 and the terminal grooves 214 in the longitudinal direction, and the terminal limiting grooves 246 are used for limiting and fixing the conductive terminals 40. The rear end of the rear extension part 24 is provided with a plurality of soldering lands 241 and a plurality of protrusions 242 formed between the soldering lands 241 corresponding to the terminal limiting grooves 246. The front end of the rear extension part 24 is provided with a vertically through filling hole 243 near the butt end 21. Two lateral sides of the terminal-limiting groove 246 are respectively protruded upward to form a plurality of blocks 244 for limiting and clamping the conductive terminal 40.

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 contact lands 332 of the bosses 33 above the front plate portion 311 are upwardly exposed in the terminal holding grooves 246 at the positions of the soldering lands 241.

Referring to fig. 4, the conductive terminal 40 includes a plurality of signal terminals 40a and a ground terminal 40b for spacing the signal terminals 40a apart. Each conductive terminal 40 includes a holding portion 41 retained in the terminal retaining groove 246 of the rear extension portion 24, a solder leg 42 formed at the rear end of the holding portion 41 and located at the position of the soldering station 241, and a resilient contact arm 43 extending forward from the holding portion 41 into the terminal groove 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 portion 41 extends obliquely downward to form a depressed portion 44. 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.

Referring to fig. 8 to 10, when the metal insert 30 and the insulating base 20 are molded, the conductive terminal 40 connected with a material strap is mounted downward in the terminal limiting groove 246, the solder leg 42 of the ground terminal 40b extends to the position of the soldering station 241 and is overlapped on the contact platform 332 of the metal insert 30, and the solder leg 42 of the ground terminal 40b is electrically contacted with the contact platform 332. After the fixing, the molding block 60 is formed by injection molding again, the molding block 60 fills the filling hole 243 and covers the conductive terminal 40, and the sinking portion 44 of the conductive terminal 40 is located above the filling hole 243 and covered by the molding block 60. The number of bosses 33 of the metal insert 30 corresponds to the number of the ground terminals 40 b.

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 signal terminal 40a of the conductive terminal 40 and the solder leg 42 of the ground terminal 40b are located on the same horizontal plane, and the material strip is connected to the rear end of the solder leg 42, and after the molding block 60 is injection molded, the material strip can be broken at one time. When the molding block 60 is injection molded, the insulating block 60 may be extended backward to form a covering portion (not shown) covering the upper portion of the leg 42 of the ground terminal 40b, so that the leg 42 of the ground terminal 40b is not exposed to the upper surface of the stage 241, and the pitch of the legs 42 of the signal terminal 40a is widened, thereby facilitating the soldering of the cable and preventing the soldering tin or flux from contaminating the leg of the ground terminal 40 b.

Referring to fig. 9 to 11, the molding block 60 is filled into the filling hole 243 by a filling portion 61, an upper protrusion 62 located above the filling portion 61 and located in front of the welding table 241, a relief portion 63 formed below the front end of the upper protrusion 62 and used for relieving the rear extension portion 24 in front of the filling hole 61, a plurality of front protrusions 622 formed by extending forward from the front end of the upper protrusion 62, and a plurality of notches 621 formed between the front protrusions 622. The front protrusion 622 extends forward beyond the rear wall 218 of the inner insertion space 23 and into the inner insertion space 23, the front protrusion 622 is correspondingly located above the front end of the holding portion 41 of the conductive terminal 40, and the front protrusion 622 is located between the front end of the holding portion 41 and the upper cover plate 11 of the shielding shell 10 and provides the holding portion 41 with an elastic fulcrum close to the elastic contact arm 43. The recess 621 is recessed rearward behind the rear wall surface 218 of the inner insertion space 23. The lateral width of the front protrusion 622 is smaller than the lateral width of the holding portion 41.

Therefore, when the molding block 60 is injection molded, the cavity of the mold can be pressed downward onto the rear extending portion 24 behind the rear wall surface 218 through the notch 621 to seal the mold, and meanwhile, the front protrusion 622 is located above the holding portion 41 of the conductive terminal 40 to provide an elastic fulcrum closer to one side of the elastic contact arm 43, thereby avoiding the problem of short circuit with the upper cover plate 11 caused by upward deformation of the conductive terminal 40 due to an excessively long arm of force during plugging.

As shown in fig. 12 and 13, the cable assembly includes a cable holder 50 and a plurality of cables C fixed in the cable holder 50, where 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 braid layer C3 covering the outer periphery of the inner insulating layer C2, and an outer insulating layer C4 covering the braid 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.

In the radio frequency plug, the boss 33 is integrally formed above the front plate part 311 of the metal insert 30, so that the welding leg 42 of the grounding terminal 40b extends to the upper part of the boss 33 and is electrically contacted, and a cable C does not need to be welded on the welding leg 42 of the grounding terminal 40 b; meanwhile, the solder leg 42 of the ground terminal 40b and the solder leg 42 of the signal terminal 40a are in the same horizontal plane and are connected, so that the terminal material strip can be broken at one time, and the process flow is simplified.

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 an insulating base body, a plurality of conductive terminals, a forming block and a shielding shell, wherein the insulating base body is integrally formed with a metal insert, the forming block is assembled on the insulating base body, the conductive terminals are fixed on the insulating base body in a forming mode, the shielding shell covers the outside of the insulating base body, the insulating base body comprises a butt joint end, a rear extension portion and an extension arm, the butt joint end is provided with a plurality of terminal grooves and an inner insertion connecting space in the vertical direction, the rear extension portion extends backwards from the butt joint end, the extension arm extends backwards from the two transverse sides of the rear extension portion, the conductive terminals comprise fixing portions formed between the rear extension portion and the forming block, welding pins formed at the tail portions of the fixing portions and elastic contact arms extending forwards from the fixing portions to the terminal grooves, one side, close to the inner insertion connecting space, of the rear extension portion is provided with a filling hole which is communicated up and down, the upper convex part is positioned above the filling part, and the front convex parts and the notches are formed at the front end of the upper convex part, the front convex parts are correspondingly positioned above the fixing part and extend into the inner inserting space by crossing the rear wall surface of the inner inserting space, and the notches are recessed backwards to the rear end of the rear wall surface of the inner inserting space.

2. The rf plug of claim 1, wherein the shielding housing includes an upper cover plate covering the insulating housing and the forming block, and a shielding frame surrounding the front side and the two lateral sides of the insulating housing, the number of the front protrusions corresponds to the number of the conductive terminals, and the front protrusions are located between the front ends of the holding portions of the conductive terminals and the upper cover plate to provide elastic supporting points near the elastic contact arms.

3. The radio frequency plug of claim 2, wherein the front protrusion has a lateral width less than a lateral width of the retention portion of the conductive terminal, the front protrusion being spaced apart from the recess.

4. The radio frequency plug according to claim 2, wherein a relief portion is formed on a lower side of a front end of the upper convex portion of the molding block, and the relief portion receives a portion of the backward extending portion in front of the filling hole.

5. The rf plug of claim 2, wherein the conductive terminal includes a plurality of signal terminals and a ground terminal separating the signal terminals, the metal insert includes a plate portion having a front plate portion and a rear plate portion, the front plate portion is formed in the rear extension portion, and a boss is integrally formed on the front plate portion at a position corresponding to the solder leg of the ground terminal and electrically connected to the solder leg of the ground terminal.

6. The radio frequency plug according to claim 5, wherein the boss includes a bent connecting portion bent backward from a front end of the front plate portion, a contact land horizontally extending backward from the bent connecting portion, and a supporting end portion bent from a rear end of the contact land toward an upper surface of the front plate portion, the supporting end portion being supported on the upper surface of the front plate portion.

7. The radio frequency plug of claim 6, wherein the radio frequency plug further comprises a cable assembly, the metal insert further comprises a rear plate portion, and an embedded portion formed by bending and extending upward from two lateral sides of the rear plate portion, the embedded portion is formed in the extension arm, and a clamping space for assembling and positioning the cable assembly is formed between the pair of extension arms on the upper surface of the rear plate portion.

8. The radio frequency plug of claim 7, wherein said mating end includes a top wall and a protrusion formed to protrude downward from said top wall, said terminal slot is formed through said top wall and said protrusion, said mating end is provided with a plurality of partitions separating said terminal slot in a longitudinal direction, an inner insertion space is formed at a side of said mating end adjacent to said rear extension, and an outer insertion space is formed between said shielding frame and said protrusion.

9. The rf plug of claim 8, wherein the resilient contact portion extends forward from the holding portion, the resilient contact portion includes a first resilient arm extending obliquely forward and downward, a second resilient arm extending downward from a front end of the first resilient arm, a third resilient arm extending obliquely rearward and upward from a rear end of the second resilient arm, a bent end portion formed by bending a rear end of the third resilient arm forward and upward, and a contact portion formed at a position where the third resilient arm is bent from the bent end portion, 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.

10. The rf plug of claim 1, wherein the rear extending portion of the insulative housing has a terminal-limiting groove corresponding to the terminal groove in a longitudinal direction, the holding portion of the conductive terminal is assembled and fixed in the terminal-limiting groove, a plurality of solder pads for receiving the solder legs of the conductive terminal and protrusions for spacing the solder pads are disposed on a side of the rear extending portion away from the mating end, and a plurality of fastening blocks are formed at two longitudinal ends of the filling hole protruding from two lateral sides of the terminal-limiting groove to fasten the conductive terminal.

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