CN219040782U - Radio frequency switch - Google Patents

Abstract

The radio frequency switch comprises an upper shell, a lower shell, a first insulator, a second insulator, a static terminal and a movable terminal, wherein the first insulator is integrally formed with the upper shell through injection molding, the second insulator is integrally formed with the lower shell through injection molding, the static terminal and the movable terminal are clamped between the first insulator and the second insulator, the upper shell comprises an upper flat plate part, a butt joint barrel part formed by upward stretching from the middle of the upper flat plate part and an upper side wall formed by downward bending and extending from the two lateral sides of the upper flat plate part, the lower shell comprises a lower flat plate part and a lower side wall formed by upward bending and extending from the two lateral sides of the lower flat plate part, the upper side wall covers the outer side of the lower side wall, at least one longitudinal groove is formed on the outer surface of the lower side wall along the longitudinal direction, a vertical groove is formed on the inner surface of the upper side wall along the vertical direction, and the vertical groove is communicated with the longitudinal groove; the soldering flux can be effectively prevented from polluting the conductive terminal.

Description

Radio frequency switch

Technical Field

The utility model relates to the field of electric connectors, in particular to a radio frequency switch.

Background

The radio frequency switch is an element for detecting radio frequency signals in the field of communication, in equipment such as mobile phones, wireless local area network devices and the like, in electronic equipment application, the size requirement on components is smaller and smaller, and the application number 202010849369.5 filed by the applicant in 2020 discloses a technical scheme adopting an upper bottom shell and a lower bottom shell separation design, and specifically comprises an upper shell, a lower shell, a first insulator integrally injection-molded with the upper shell, a second insulator integrally injection-molded with the lower shell, and a static terminal and a movable terminal clamped between the first insulator and the second insulator. The radio frequency switch is mounted on the circuit board and is welded and fixed through soldering tin and the like, the size of the radio frequency switch is very small, and as the cavity matched with the movable terminal and the static terminal is open, during welding, the risk that soldering flux or soldering tin enters the cavity along the welding legs of the movable terminal or the static terminal exists, so that the product function is affected; meanwhile, the lower shell needs to be welded on the circuit board at the same time, and the lower shell is in contact fit with the upper shell, so that the soldering flux can enter the cavity through the joint of the lower shell and the upper shell.

Disclosure of Invention

In view of this, it is desirable to provide a radio frequency switch that effectively prevents flux from climbing up to contaminate the conductive terminals and affecting contact performance.

For solving above-mentioned technical problem, this application provides a radio frequency switch, including last casing, lower casing, with go up casing injection moulding as an organic whole first insulator, with lower casing injection moulding as an organic whole second insulator and centre gripping in quiet terminal and the movable terminal between first insulator and the second insulator, go up the casing include upper flat plate portion, from upward tensile butt joint section of thick bamboo portion that forms and from upward flat plate portion lateral both sides bend down the upper sidewall that extends and form in the middle of the upper flat plate portion, lower casing include lower flat plate portion and from lower flat plate portion lateral both sides bend down the lower sidewall that extends and form upwards, the upper sidewall covers the lower sidewall outside, at least one longitudinal groove has been seted up along longitudinal direction to lower sidewall surface, vertical groove has been seted up along the vertical direction to upper sidewall internal surface, vertical groove with longitudinal groove intercommunication.

Preferably, the lower end of the vertical groove is open, the top of the vertical groove is closed, the vertical groove at least partially overlaps with the vertical groove in the transverse direction, the inner side edge of the bottom end of the upper side wall is thinned outwards to form an inner guide part, and the number of the vertical grooves corresponds to the number of welding points on the bottom surface of the lower shell.

Preferably, the longitudinal grooves are open at two ends in the longitudinal direction, the projections of the longitudinal grooves and the vertical grooves in the transverse direction are overlapped at least partially to communicate the vertical grooves and the longitudinal grooves, the upper end edge of the lower side wall is thinned inwards to form an outer guide part, and the inner guide part and the outer guide part are matched with each other to facilitate the insertion of the upper side wall into the outer side of the lower side wall.

Preferably, a space is formed in the middle of each upper side wall by cutting, a pair of upper side edge walls are formed at two longitudinal ends of the space, the vertical grooves are respectively formed on the inner side surfaces of the upper side edge walls, the bottoms of the vertical grooves are open, and the top ends of the vertical grooves are closed; the lower side wall middle tear is formed with protruding portion and breach portion to transversely outside extension, breach portion will be divided into a pair of downside edge wall with a lower side wall, every the longitudinal groove has been seted up on the downside edge wall, every the longitudinal outer end of the longitudinal groove on the downside edge wall is open, and longitudinal inner is close to breach portion one side is closed.

Preferably, the second insulator comprises a base, a first notch, a second notch and a lower through groove, wherein the first notch and the second notch are formed in the front side and the rear side of the base, the lower through groove is formed in the upper surface of the base and is communicated with the first notch and the second notch, the movable terminal comprises a first welding part positioned at the first notch, a first vertical arm formed by bending upwards from the first welding part, an elastic part horizontally bent from the first vertical arm and extending across the lower through groove, the static terminal comprises a second welding part positioned at the second notch, a second vertical arm formed by bending upwards from the second welding part, a second clamped part extending into the lower through groove and a contact arm formed by bending from the second clamped part, the longitudinal two ends of the lower shell also comprise a first groove and a second avoiding groove which are formed by bending upwards from the first notch and the second notch, the inner side of the second vertical arm outwards protrudes from the bottom of the second notch to form a second supporting block, and the second vertical arm outwards-side of the second supporting block is formed on the inner side of the upper supporting block and the upper supporting groove.

Preferably, the lower through groove is provided with a first pressing part and a second pressing part at a position close to the second notch, the first insulator is provided with a first upper pressing part at a position corresponding to the first pressing part and the second pressing part, and the second clamped part is clamped between the upper pressing part and the first pressing part and the second pressing part.

Preferably, the first upper pressing portion protrudes downwards from the first lower pressing portion, an upper pressing glue adding portion is formed on the first lower pressing portion in a protruding mode, the upper pressing glue adding portion clamps the inner side of the second clamped portion in an interference mode, and the bottom face of the upper pressing glue adding portion is lower than the bottom face of the upper pressing portion.

Preferably, the bottom wall bottom surface of lower flat plate portion is equipped with the attenuate portion along fore-and-aft direction, the attenuate portion by the second insulator is filled up, the attenuate portion is including middle attenuate portion and be located first dodge groove and the second dodge the attenuate tip on the groove edge, the bottom surface of the horizontal both sides of attenuate portion is less than the bottom surface of attenuate portion, the attenuate middle part runs through and is formed with the perforation, the perforation intercommunication attenuate portion with lower flat plate portion upper surface, lower flat plate portion bottom wall is close to four downside edge wall positions are equipped with the solder joint of welding on the printed circuit board.

Preferably, the bottom wall of the second insulator includes a filling portion filling the thinned portion and an outer recess located at a lateral outer side of the filling portion and attached to a surface of the upper flat plate portion, the filling portion is integrally connected with the second insulator on the surface of the upper flat plate portion through the through hole, and a surface of the filling portion is flush with a bottom surface of the lower flat plate portion.

In order to solve the technical problem, the application further provides a radio frequency switch, including last casing, lower casing, with go up casing injection moulding as an organic whole first insulator, with lower casing injection moulding as an organic whole second insulator and centre gripping in quiet terminal and the movable terminal between first insulator and the second insulator, the second insulator includes the basal portion, set up in first, the second breach of both sides around the basal portion and set up in the lower logical groove of first breach and second breach of intercommunication is offered to the upper surface of basal portion, the movable terminal including be located first welding portion, from first welding portion bending up and forms first vertical arm, from first vertical arm level bending and extend and span down the elastic part of logical groove, quiet terminal includes the second welding portion that is located second breach department, from second welding portion bending up extends and forms, from second vertical arm extends to down the interior second portion of logical inslot and by second vertical arm and second is bent down by second vertical arm and second lateral side forming from the second top side of holding portion and the second top of holding piece and forming in the top side of holding portion and forming the top side of holding to contact with the second top holding portion.

This application radio frequency switch is through setting up vertical groove on the upper side wall internal surface of last casing the lower lateral wall surface of lower casing set up with vertical groove intercommunication's longitudinal groove, the scaling powder that produces during the welding can partly stay in vertical groove with in the longitudinal groove, avoid scaling powder to interfere movable terminal and quiet terminal.

Simultaneously, the second breach downside is formed with outwards supports the kicking block of the second vertical arm of quiet terminal, and be in the kicking block top just is located the inboard formation of second vertical arm can increase tensile storage groove, during the welding of second welding portion, scaling powder can stay in the storage groove, avoids getting into and leads to the inslot pollution conductive terminal down. Simultaneously, the ejector block pushes the second vertical arm outwards, so that the contact arm of the static terminal cannot tilt upwards to influence the contact performance.

Drawings

FIG. 1 is a perspective view of a radio frequency switch of the present utility model;

FIG. 2 is a perspective view of the combination of FIG. 1 from another direction;

FIG. 3 is an exploded perspective view of the RF switch of the present utility model;

FIG. 4 is an exploded perspective view of FIG. 3 from another direction;

fig. 5 is a perspective view of the radio frequency switch of the present utility model in a state in which the movable terminal and the stationary terminal are engaged;

FIG. 6 is a perspective view of a first insulator and an upper housing of the RF switch of the present utility model;

FIG. 7 is a perspective view of a second insulator and lower housing of the RF switch of the present utility model;

fig. 8 is a perspective view of the combination of the movable terminal and the static terminal of the rf switch of the present utility model in the second insulator;

FIG. 9 is a cross-sectional view taken along the line A-A of FIG. 1;

fig. 10 is a sectional view taken along the broken line B-B shown in fig. 1.

The meaning of the reference numerals in the drawings are: the radio frequency switch-100, the metal shell-10, the upper shell-11, the upper flat plate part-111, the butt joint barrel part-112, the accommodating space-113, the upper side wall-114, the upper side edge wall-115, the vertical groove-1151, the inner guide surface-1152 and the spacing space-116; the lower shell-12, the lower flat plate part-121, the first abdication groove-122, the thinning part-123 and the thinning middle part-1231; thinning the end-1232; the second relief groove-124, the through hole-125, the lower side wall-126, the lower side edge wall-127, the longitudinal groove-1271, the outer guide surface-1272, the notch portion-128, the protruding portion-129 and the welding groove-13; the insulation body-20, the first insulation body-21, the base body-211, the cylinder part-212, the jack-213, the upper through groove-214, the first upper pressing part-215, the upper pressing glue adding part-216 and the second upper pressing part-217; the device comprises a second insulator-22, a base-221, a first notch-222, a second notch-223, a top block-2231, a storage groove-2232, a lower through groove-224, a concave space-225, a baffle wall-226, an inclined surface-227, a first pressing part-228, a second pressing part-229, a lower bump-24, a limit space-25, a supporting table-251, an inclined avoidance surface-252, a channel-26, an outer edge part-27, a bottom wall-28, a filling part-281, an outer concave part-282 and a combining block-29; the device comprises a conductive terminal-30, a movable terminal-31, a first welding part-311, a first vertical arm-312, an elastic part-313, a main elastic arm-314, a contact elastic arm-315, a supporting end-3151, a thin beating part-3152, a first clamped part-316, a connecting arm-317 and a clamped foot-318; the device comprises a static terminal-32, a second welding part-321, a second vertical arm-322, a second clamped part-323, a contact arm-324 and a crease part-325.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

The present application uses the X direction shown in fig. 1 as the left-right direction (lateral direction), the Y direction as the front-back direction (longitudinal direction), and the Z direction as the vertical direction. In particular, in fig. 1, the static terminal 32 is located rearward of the rf switch 100 in the front-to-rear direction.

Referring to fig. 1 to 4, the rf switch 100 of the present utility model includes a metal housing 10, an insulating body 20 held in the metal housing 10, and a conductive terminal 30 held in the insulating body 20.

The metal housing 10 includes an upper housing 11 and a lower housing 12 which are vertically engaged. The upper housing 11 includes an upper flat plate portion 111 disposed straight, a butt-joint barrel portion 112 disposed at a central position of the upper flat plate portion 111 and protruding upward, and an upper side wall 114 bent downward from a side edge of the upper flat plate portion 111 and extending vertically. The docking cylinder 112 may be configured to be inserted into a housing of a docking connector (not shown), and a receiving space 113 penetrating the upper housing 11 up and down is provided at a central position of the docking cylinder 112. The upper side wall 114 includes two upper side edge walls 115 respectively located at two lateral edges of the upper plate 111 and spaced apart from each other, and four upper side edge walls 115 are provided. A space 116 is formed between the two upper side edge walls 115 on the same side. The inner side surface of the upper side edge wall 115 is provided with a vertical groove 1151 extending in a vertical direction, and the bottom side of the vertical groove 1151 is open and the upper side is closed. The lower end edge of the upper skirt wall 115 is internally thinned outwardly to form an inner guide surface 1152.

The lower housing 12 includes a lower flat plate portion 121 disposed straight, a first relief groove 122 and a second relief groove 124 disposed on front and rear sides of the lower flat plate portion 121 and extending in opposite directions, and a lower sidewall 126 formed by bending upward from a lateral side edge of the lower flat plate portion 121 and extending vertically. The outer surface of the lower sidewall 126 corresponds to and mates with the inner surface of the upper sidewall 114. The lower side wall 126 includes two lower side edge walls 127 respectively located at left and right side edges in the lateral direction of the lower plate portion 121 and spaced apart from each other, and four lower side edge walls 127 are provided. A protruding portion 129 extending outwards from two lateral sides of the lower plate portion 121 is disposed between the two lower side edge walls 127 on the same side, and the protruding portion 129 is correspondingly matched with the spacing space 116. The arrangement of the projections 129 can be optimized in terms of process design, which serves as a connecting strip, and the projections 129 protrude beyond the lower side edge wall 127 in the transverse direction. A notch 128 is formed between the pair of lower side edge walls 127 on the upper side of the protruding portion 129. Longitudinal grooves 1271 are formed in the outer side surface of the lower side edge wall 127 along the longitudinal direction, and an outer guide surface 1272 is formed by thinning the top outer edge of the lower side edge wall 127. The longitudinal grooves 1271 are closed on the side close to the notch 128 and open on the side far from the notch 128.

The bottom middle position of the flat plate portion 121 is thinned and formed with a thinned portion 123, and the thinned portion 123 is penetrated in the front-rear direction and includes a thinned middle portion 1231 located at the middle portion and a thinned end portion 1232 surrounding the outer edge portions of the first and second relief grooves 122 and 124. The thinned end 1232 has thinned portions on both the longitudinal and lateral sides of the first and second relief grooves 122, 124 to facilitate retention of the insulating body 20 with the lower housing 12. The thinned middle part 1231 is formed with a through hole 125 penetrating up and down, and the through hole 125 facilitates the plastic to flow up and down. The protruding portion 129 is torn from the middle portion of the lower sidewall 126, and the front and rear end portions of the lower sidewall 126 are bent upward, and the protruding portion 129 is integrated with the lower plate portion 121 and has a bottom surface flush with the bottom surface, and the notch portion 128 is formed.

The upper and lower cases 11 and 12 are preferably manufactured by a metal stamping process, or may be manufactured by a metal powder metallurgy process.

Referring to fig. 1 to 10, the insulating body 20 includes a first insulating body 21 integrally formed with the upper housing 11 and a second insulating body 22 integrally formed with the lower housing 12 and positioned below the first insulating body 21.

The first insulator 21 includes a base 211 and a cylindrical portion 212 formed at a central position of the base 211 and protruding upward. A center position of the cylindrical portion 212 is provided with an insertion hole 213 penetrating the first insulator 21 up and down. The lower surface of the base 211 is formed with an upper through groove 214 on one side in the front-rear direction and a first upper pressing portion 215 on the other side, which is formed by protruding downwards, and one end of the first upper pressing portion 215, which is close to the insertion hole 213, is continuously protruding downwards to form an upper pressing glue adding portion 216. The two lateral sides of the upper through groove 214 protrude downward to form a second upper pressing portion 217. The upper through groove 214 communicates with the insertion hole 213, and the first insulator 21 is integrally injection-molded with the upper case 11. The bottom surface of the upper pressure-applying portion 216 is lower than the bottom surface of the first upper pressure portion 215.

The second insulator 22 includes a base 221 disposed in a straight line, a first notch 222 located on a front side of the base 221, and a second notch 223 located on an opposite rear side. The upper surface of the base 221 is formed with a downward through groove 224 and a downward concave space 225 recessed downward in the front-rear direction. The lower through groove 224 is near one side of the first notch 222 and is in communication with the first notch 222. The concave space 225 is close to the second notch 223 and is in communication with the second notch 223. The upper surface of the base 221 is provided with a pair of blocking walls 226 having inclined surfaces 227 at positions on the left and right sides of the second notch 223. The inclined surface 227 of the blocking wall 226 is connected to the lower surface of the concave space 225. The lower surface of the concave space 225 is lower than the upper surface of the base 221 (including the blocking wall 226), and a first pressing portion 228 and a second pressing portion 229 are disposed in the concave space 225 near the second notch 223 at intervals in the front-rear direction. The lower through groove 224 includes a limiting space 25 adjacent to the first notch 222 and forming a space, and a channel 26 communicating the limiting space 25 and the concave space 225. Two sides of the lateral edge of the base 221 are respectively spaced two by two upwards and are convexly formed with two pairs of lower protruding blocks 23, 24, the two pairs of lower protruding blocks 23, 24 are respectively limited in the front-rear direction by the limiting space 25, the front end of the limiting space 25 is formed with a supporting table board 251, and the rear side surface of the supporting table board 251 gradually descends to the bottom surface of the concave space 225 and forms an avoidance inclined surface 252. The relief angled surface 252 connects the support table 251 with the recessed space 225 through the channel 26. A top block 2231 is formed to protrude rearward from the lower side of the second notch 223, and a water storage groove 2232 is formed above the top block 2231.

The second insulator 22 further includes outer edge portions 27 formed on both lateral sides of the base 221. A coupling block 29 is formed in the middle of the outer edge portion 27 so as to protrude outward in the lateral direction, and the protruding length of the coupling block 29 is kept in conformity with the protruding portion 129 of the lower case 12. The top surface of the blocking wall 226 is a horizontal surface, and the inclined surface 227 is formed to extend from the top surface of the blocking wall 226 along the front lower direction. A filling portion 281 filling the bottom side of the thinned portion 123 and an outer recess 282 located on both lateral sides of the filling portion 281 and covered by the lower flat plate portion 121 of the lower case 12 are formed in the middle of the bottom wall 28 of the second insulator 22. The through hole 125 is filled with the second insulator 22 and communicates the filling portion 281 with the plastic on the upper side of the lower case 12. The filling portion 281 is flush with the bottom surface of the base 221 and is attached to an object. The cooperation of the thinned portion 123 and the filling portion 281 can make the second insulator 22 more firmly bonded to the lower case 12.

The conductive terminal 30 includes a stationary terminal 32 and a movable terminal 31 elastically contacting the stationary terminal 32. The movable terminal 31 includes a first welding portion 311 disposed in a straight manner, a first vertical arm 312 bent and extended upward from the first welding portion 311, an elastic portion 313 bent from the first vertical arm 312 and extended in the front-rear direction, and a pair of first clamped portions 316 disposed laterally from both sides of a connection position between the first vertical arm 312 and the elastic portion 313. The elastic portion 313 includes a main spring arm 314 connected to the first vertical arm 312, and a pair of contact spring arms 315 formed to extend from both sides of the other end of the main spring arm 314 away from the first vertical arm 312. A pair of contact spring arms 315 are formed by extending backward from both lateral sides of the main spring arm 314, respectively, and a space is formed between the pair of contact spring arms 315, and a pair of contact spring arms 315 are located at an inner upper edge of the space to form a contact area with the static terminal 32. The free ends of the pair of contact spring arms 315 form a supporting end 3151 supported on the upper surface or the inclined surface 227 of the blocking wall 226, the tail end of the supporting end 3151 is thinned to form a bevel-shaped thinned portion 3152, the thickness of the thinned portion 3152 is smaller than that of the contact spring arms 315, and the thickness of the thinned portion 3152 gradually thins towards the free end direction. The pair of first clamped portions 316 includes a connecting arm 317 connected to the first vertical arm 312 or the main spring arm 314, and a clamped leg 318 extending rearward from the connecting arm 317 in the front-rear direction. The pair of first clamped portions 316 is sunk into the limiting space 25 of the second insulator 22, and the upper surfaces of the first clamped portions 316 upwardly exceed the upper surfaces of the lower protruding blocks 23, 24, and the front-rear positions of the first clamped portions 316 are limited by the lower protruding blocks 23, 24.

The static terminal 32 includes a second welding portion 321 disposed in a flat manner, a second vertical arm 322 formed by bending and extending upward from the second welding portion 321, a second clamped portion 323 bent from the second vertical arm 322 and extending in the front-rear direction, and a pair of contact arms 324 formed by extending obliquely upward from both sides of the second clamped portion 323. The pair of contact arms 324 are bent obliquely from two lateral sides of the second clamped portion 323 to form a crease 325, the crease 325 forms a certain angle with the front-back direction to enable the pair of contact arms 324 to be outwards opened, and a certain angle is formed between the extending directions of the pair of crease 325 to enable the front side of the contact arms 324 to be closer to the lateral outer side. In this way, when the pair of contact arms 324 overlap the pair of contact spring arms 315, the contact arms 324 only contact the contact spring arms 315 at a single point on the outer side of the front end, so as to ensure stable switching performance.

Referring to fig. 3, 9 and 10, in the process of manufacturing and assembling the rf switch 100 of the present utility model, the following steps are included, but the applicant should point out that the order of the steps is not fixed and unique, and can be properly adjusted according to the requirement, so that the difference caused by adjusting the order of the steps is still equivalent to the scope of the present utility model.

First, the upper case 11, the lower case 12, the movable terminal 31, and the stationary terminal 32 are manufactured by a metal stamping process.

Then, the upper case 11 is molded in a mold to form the first insulator 21, and an upper mold set is formed. The upper surface of the base 211 of the first insulator 21 is attached to the upper plate 111 of the upper case 11, and the cylindrical portion 212 is held in the accommodating space 113 of the mating cylinder 112.

The second insulator 22 is formed by injection molding the second insulator 22 in a mold, and a lower mold set is formed. The bottom surface of the filling portion 281 of the bottom wall 28 of the second insulator 22 is flush with the bottom surface of the lower plate portion 121. The upper surface of the lower case 12 is covered with the second insulator 22. The first yielding groove 122 is correspondingly matched with the first notch 222, and the second yielding groove 124 is correspondingly matched with the second notch 223. The outer lateral surface of the outer edge portion 27 is fitted to the inner surface of the lower side wall 126. The coupling block 29 of the outer edge 27 extends and is held in the notch 128, and the coupling block 29 is supported by the protruding portion 129, so that the holding between the front and rear outer edges of the second insulator 22 and the lower shell 12 is more secure.

Then, the movable terminal 31 and the static terminal 32 are assembled between the upper module and the lower module, and the pair of contact spring arms 315 of the movable terminal 31 elastically contact the pair of contact arms 324 of the static terminal 32 from bottom to top. And then the upper module and the lower module are assembled together in the up-down direction. The upper through groove 214 forms a communicating space with the lower through groove 224, the insertion hole 213 and the concave space 225.

At this time, the static terminal 32 is held at a position between the upper and lower modules. The second welding portion 321 and the second vertical arm 322 of the static terminal 32 are located in the second notch 223. The first upper pressing portion 215 vertically corresponds to the first lower pressing portion 228 and the second lower pressing portion 229, and clamps the second clamped portion 323. The pressing-down glue adding portion 216 is in interference press-connection with the second clamped portion 323, and even when the plastic is deformed by the IR furnace, enough clamping force can be provided for the second clamped portion 323, so that poor contact caused by upward tilting of the second clamped portion 323 is avoided. A pair of contact arms 324 are suspended above the recessed space 225. The movable terminal 31 is fixed at a position between the upper and lower modules. The first welding portion 311 and the first vertical arm 312 of the movable terminal 31 are located in the first notch 222. The elastic portion 313 extends back through the limiting space 25 and the channel 26 into the concave space 225 after being bent from the first vertical arm 312. The second upper pressing portions 217 vertically correspond to the bottom surface of the limiting space 25 and clamp the pair of clamped pins 318 to fix the movable terminal 31. The foremost end of the elastic portion 313 is supported on the support table 251 such that the foremost end of the elastic portion 313 becomes the first fulcrum of the elastic arm 313 and remains unchanged. The elastic portion 313 is integrally and upwardly elastically contacted with the contact arm 324 at a point on the lateral outer side surface in a single point contact manner. After the movable terminal 31 and the static terminal 32 are assembled to the upper and lower modules, the elastic portion 313 receives an upward and downward pressure from the static terminal 32 and the lower module, so that the elastic portion 313 is elastically deformed downward as a whole to form a non-upward arched shape. The free end of the contact spring arm 315 abuts against the blocking wall 226 or the inclined surface 227, so that a larger elastic contact force exists between the movable terminal 31 and the static terminal 32.

The outer surface of the lower side edge wall 127 of the lower case 12 is fitted to the inner surface of the upper side edge wall 115 of the upper case 11. Vertical slots 1151 on the inner surface of upper skirt wall 115 communicate with vertical slots 1271 on the outer surface of lower skirt wall 127 at an overlap to form a cross-shaped structure. The top block 2231 at the lower side of the second notch 223 of the second insulator 22 is propped against the second vertical arm 322 of the static terminal 32 outwards, so that the contact arm 324 of the static terminal 32 does not tilt upwards, and poor contact is avoided. The storage groove 2232 is located inside the second vertical arm 322.

A welding groove 13 is formed at a position between the lower edge of the upper skirt wall 115 and the outer surface of the lower skirt wall 127. The welding groove 13 is higher than the lower surface of the lower plate portion 121 in the up-down direction. After the upper case 11 and the lower case are assembled, the upper case 11 and the lower case 12 are welded together at the welding groove 13 by means of laser welding.

Finally, the rf switch 100 is soldered to a printed circuit board, and the first soldering portion 311 and the second soldering portion 321 of the movable terminal 31 and the stationary terminal 32 and the four positions of the bottom surface of the lower housing 12 corresponding to the lower side edge 127 are soldered to the printed circuit board by soldering flux. During welding, the top block 2231 abutting against the inner side of the static terminal 32 can prevent part of the flux from climbing up into the lower through groove 224, and the surface tension of the storage groove 2232 can be increased, so that part of the flux is left in the storage groove 2232, and the flux is further reduced from flowing into the lower through groove 224. The flux melted by the welding at the bottom of the lower case 12 flows along the vertical grooves 1151 in the upper side edge wall 115 of the upper case 11, and then flows into the vertical grooves 1271 in the lower side edge wall 127 of the lower case 12, so that the flux is prevented from entering the lower through groove 224 or the upper through groove 214 through the joint surface between the upper side edge wall 115 and the lower side edge wall 127.

In an embodiment, the notch 128, the protrusion 129, the combining block 29 and the spacing space 116 may be omitted, and the upper sidewall 114, that is, the upper sidewall 115, that is, the two upper sidewalls 115 are integrally connected to form an upper sidewall, and the two lower sidewalls 127 are integrally connected to form a lower sidewall 126. In this case, the outer surface of the lower sidewall 126 may be provided with a longitudinal slot 1271 extending therethrough, and the upper sidewall 114 may be provided with a plurality of vertical slots 1151 communicating with the longitudinal slot 1271 according to the number of welding points.

In addition to being integrally injection molded, the second insulator 22 and the lower housing 12 may be held in an assembled and fixed manner during the manufacturing process.

The supporting table 251 is used for supporting the outermost side of the elastic portion 313 of the movable terminal 31, and an inclined avoiding surface 252 is disposed below the surface of the second insulator 22 corresponding to the backward extending direction of the elastic portion 313, so that, when the probe is inserted into the insertion hole 213 to press the movable terminal 31 to be misplaced during detection, the moment arm is ensured not to be shortened.

Meanwhile, the pressing and glue adding portion 216 of the first insulator 21 protrudes downward by a certain margin to press the static terminal 32, and even if the first insulator 21 and the second insulator 22 slightly deform after passing through the high temperature IR furnace, the static terminal 32 is still stably clamped and fixed, so that dislocation is not easily generated and the product quality is not affected.

The rf switch 100 of the present application is provided with the vertical groove 1151 on the inner surface of the upper side wall 114 of the upper housing 11, the outer surface of the lower side wall 126 of the lower housing 12 is provided with the vertical groove 1271 which is communicated with the vertical groove 1151, and the soldering flux generated during welding can be partially remained in the vertical groove 1151 and the vertical groove 1271, so that the soldering flux is prevented from interfering with the movable terminal 31 and the static terminal 32.

Meanwhile, a top block 2231 is formed at the lower side of the second notch 223 and abuts against the second vertical arm 322 of the static terminal 32, a storage groove 2232 is formed above the top block 2231 and located at the inner side of the second vertical arm 322, and when the second welding portion 321 is welded, the flux can be retained in the storage groove 2232, so as to avoid entering the lower through groove 224 to pollute the conductive terminal. At the same time, the top block 2231 pushes the second vertical arm 322 outwards, so that the contact arm 324 of the static terminal 32 will not tilt upwards to affect the contact performance.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (9)

1. The utility model provides a radio frequency switch, includes casing, lower casing, with the first insulator of casing injection moulding as an organic whole, with the second insulator of casing injection moulding as an organic whole down and centre gripping in quiet terminal and the movable terminal between first insulator and the second insulator, go up the casing and include flat plate portion, from upward tensile butt joint section of thick bamboo portion that forms and from upward lateral both sides of flat plate portion bend down the upper sidewall that extends the formation in the middle of the flat plate portion, the casing includes flat plate portion down and from lower sidewall that lower flat plate portion lateral both sides bend the extension formation upwards, upper sidewall covers the lower sidewall outside, its characterized in that, at least one longitudinal groove has been seted up along longitudinal direction to lower sidewall surface, vertical groove has been seted up along the vertical direction to upper sidewall internal surface, vertical groove with longitudinal groove intercommunication.

2. The radio frequency switch according to claim 1, wherein the vertical groove is opened at a lower end and closed at a top, the vertical groove is overlapped with the vertical groove at least partially in a transverse direction, an inner guide part is formed by thinning an inner edge of a bottom end of the upper side wall outwards, and the number of the vertical grooves corresponds to the number of welding points of the bottom surface of the lower shell.

3. The radio frequency switch according to claim 2, wherein the longitudinal groove is open at both ends in a longitudinal direction, the longitudinal groove overlaps with the projection of the vertical groove at least partially in a lateral direction to communicate the vertical groove with the longitudinal groove, an upper end edge of the lower side wall is thinned inwardly to form an outer guide portion, and the inner guide portion and the outer guide portion cooperate to facilitate insertion of the upper side wall outside the lower side wall.

4. The radio frequency switch according to claim 3, wherein a space is formed in the middle of each upper side wall by cutting, a pair of upper side edge walls are formed at two longitudinal ends of the space, the vertical grooves are respectively formed on the inner side surfaces of each upper side edge wall, the bottoms of the vertical grooves are open, and the tops of the vertical grooves are closed; the lower side wall middle tear is formed with protruding portion and breach portion to transversely outside extension, breach portion will be divided into a pair of downside edge wall with a lower side wall, every the longitudinal groove has been seted up on the downside edge wall, every the longitudinal outer end of the longitudinal groove on the downside edge wall is open, and longitudinal inner is close to breach portion one side is closed.

5. The radio frequency switch of claim 4, wherein the second insulator comprises a base, first and second notches formed on front and rear sides of the base, and a lower through groove formed on an upper surface of the base and communicating the first notch and the second notch, the movable terminal comprises a first welding part at the first notch, a first vertical arm formed by bending the first welding part upwards, an elastic part horizontally bent from the first vertical arm and extending across the lower through groove, the static terminal comprises a second welding part at the second notch, a second vertical arm formed by bending the second welding part upwards, a second clamped part extending from the second vertical arm into the lower through groove, and a contact arm formed by bending the second clamped part and electrically contacting the elastic part, the two longitudinal ends of the lower housing further comprise a first yielding groove and a second yielding groove corresponding to the first notch and the second notch, the second yielding groove and the second top side of the upper top block are formed by bending the second vertical arm outwards, and the top block are formed on the inner side of the top block.

6. The radio frequency switch according to claim 5, wherein the lower through slot is provided with a first pressing portion and a second pressing portion at positions near the second notch, the first insulator is provided with a first upper pressing portion at positions corresponding to the first pressing portion and the second pressing portion, and the second clamped portion is clamped between the upper pressing portion and the first and second pressing portions.

7. The radio frequency switch according to claim 6, wherein the first upper pressing portion is provided with an upper pressing glue adding portion protruding downwards in correspondence to the first lower pressing portion, the upper pressing glue adding portion clamps the inner side of the second clamped portion in an interference manner, and the bottom surface of the upper pressing glue adding portion is lower than the bottom surface of the upper pressing portion.

8. The radio frequency switch according to claim 7, wherein a bottom wall bottom surface of the lower plate portion is provided with a thinning portion along a front-rear direction, the thinning portion is filled with the second insulator, the thinning portion comprises a thinning middle portion and thinning end portions located on edges of the first yielding groove and the second yielding groove, bottom surfaces of two lateral sides of the thinning portion are lower than the bottom surface of the thinning portion, the thinning middle portion is penetrated and formed with through holes, the through holes are communicated with the thinning portion and the upper surface of the lower plate portion, and welding points welded on a printed circuit board are arranged on the bottom wall of the lower plate portion at positions close to four lower side edge walls.

9. The radio frequency switch of claim 8, wherein the bottom wall of the second insulator includes a filling portion filling the thinned portion and an outer recess laterally outward of the filling portion and attached to the upper plate portion surface, the filling portion being integrally connected to the second insulator of the upper plate portion surface by the through hole, the surface of the filling portion being flush with the bottom surface of the lower plate portion.

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