RF Switch

Abstract

A radio frequency switch, comprising an insulating base, an insulating upper cover, a moving terminal and a static terminal clamped between the insulating base and the insulating upper cover, and a metal shell that holds the insulating base and the insulating upper cover as a whole, wherein the moving terminal comprises a first welding foot arranged on the first longitudinal side of the insulating base, a main cantilever extending from the first welding foot to above the surface of the insulating base, and a pair of leaf spring arms extending obliquely downward from the two lateral sides of the main cantilever in the longitudinal direction, respectively; the static terminal comprises a second welding foot arranged on the second longitudinal side of the insulating base, and contact arms extending from the second welding foot to above and contacting a pair of leaf spring arms, and the second longitudinal side edge of the insulating base protrudes upward to form a support wall, the support wall comprises an inclined surface facing the first longitudinal side of the insulating base, and the free ends of a pair of leaf spring arms are abutted against the inclined surface in the initial state. The present application ensures elastic performance while being more miniaturized.

Description

Technical Field

[0001] The present invention relates to the field of electrical connectors, and in particular to a radio frequency switch. Background Art

[0002] With the advent of the intelligent era, in today's increasingly miniaturized electronic information field, such as mobile phones, wireless LAN devices and other devices, RF switches are used to detect RF signals of various electronic devices, and RF switches are also required to be further miniaturized. However, in the process of miniaturization of RF switches, the force arm of the elastic parts of the RF switch function will be reduced, causing the miniature RF switch to fail during the IR furnace and detection and plugging process, which poses a great challenge to miniaturization. Therefore, it is necessary to propose a more miniaturized and reliable RF switch technical solution. Summary of the invention

[0003] In view of this, it is necessary to provide a radio frequency switch that can maintain good elastic contact performance while miniaturizing the structure.

[0004] In order to solve the above technical problems, the present application provides a radio frequency switch, including an insulating base, an insulating upper cover, a moving terminal and a static terminal clamped between the insulating base and the insulating upper cover, and a metal shell that fixes the insulating base and the insulating upper cover as a whole, the moving terminal includes a first welding foot arranged on the first longitudinal side of the insulating base, a main cantilever extending from the first welding foot to above the surface of the insulating base, and a pair of leaf spring arms extending obliquely downward from the two lateral sides of the main cantilever in the longitudinal direction, the static terminal includes a second welding foot arranged on the second longitudinal side of the insulating base and contact arms extending from the second welding foot to the top of the pair of leaf spring arms and contacting them, the second longitudinal side edge of the insulating base protrudes upward to form a support wall, the support wall includes an inclined surface facing the first longitudinal side of the insulating base, the free ends of a pair of leaf spring arms are abutted on the inclined surface of the support wall in an initial state, and when the main cantilever is pressed down, the leaf spring arm moves along the inclined surface toward the first longitudinal side of the insulating base.

[0005] Preferably, the leaf spring arm includes a support arm extending from both sides of the main cantilever, and a support end bent upward from the free end of the support arm, the lower surface of the support end has a support point supported on the inclined surface, and the main cantilever and the support arm are generally straight or generally concave downward.

[0006] Preferably, one end of the first longitudinal side of the main cantilever is higher than one end of the second longitudinal side of the support arm.

[0007] Preferably, the upper surface of the insulating base is recessed downward to form a concave space, and the surface of the inclined surface is connected to the lower surface of the concave space. When the main cantilever is pressed downward, the main cantilever and the support arm as a whole are elastically deformed in a concave shape toward the concave space, and the end edge of the second longitudinal side of the support end moves toward the first longitudinal side.

[0008] Preferably, a first notch and a second notch for assembling the first welding leg of the moving terminal and the second welding leg of the static terminal are respectively provided on both longitudinal sides of the insulating base, the concave space is located in the middle position of the upper surface of the insulating base, and an avoidance groove is opened on the upper surface of the insulating base along the first notch toward the second notch, the avoidance groove is connected with the concave space, and the second notch is connected with the concave space, the first welding leg is located at the bottom of the first notch, the first welding leg is bent upward and extends upward along the first notch to form a first vertical portion, the main cantilever is formed by bending from the first vertical portion along the longitudinal direction, and the main cantilever is suspended above the avoidance groove and the concave space.

[0009] Preferably, the avoidance groove has two lateral sides protruding upward to form a receiving portion, the receiving portion protrudes upward on the side close to the second notch to form a stopper, the insulating base surface protrudes upward on the side of the second notch to form a first support column, and the movable terminal also includes a supporting portion extending from the two lateral sides of the main cantilever close to the first notch to form a supporting portion supported on the receiving portion, and the supporting portion is limited by the stopper toward the second notch.

[0010] Preferably, the static terminal also includes a second vertical portion formed by bending from one end of the second welding leg and extending upward along the second notch, and a fixed portion supported on the first support column by bending from the second vertical portion along the longitudinal direction, and a pair of contact arms are formed by extending obliquely upward from the lateral sides of the fixed portion.

[0011] Preferably, the insulating upper cover includes a cylindrical portion with an insertion hole, a main body formed at the bottom of the cylindrical portion, a pit formed on the bottom surface of the main body and corresponding to the avoidance groove, a pressure platform formed on both lateral sides of the pit and clamping the support portion with the receiving portion, and a pressure block protruding downward from the bottom surface of the main body, the main cantilever is suspended between the avoidance groove and the concave space and the pit, and the pressure block and the first support column jointly clamp the fixing portion.

[0012] Preferably, the supporting part includes a lower folding part formed by bending downward from both sides of the main cantilever and extending, and a supporting foot supported on the receiving part by horizontally bending from the lower folding part. The supporting foot is limited by the stop block, and the pressing platform and the receiving part clamp the supporting foot.

[0013] Preferably, a second support column is provided on the upper surface of the insulating base at the position of the second notch, the second support column is located longitudinally outside the first support column, the horizontal plane of the second support column is lower than the horizontal plane of the first support column, and the fixing portion first passes over the second support column and then is supported on the upper surface of the first support column.

[0014] Preferably, the metal shell includes a covering cylinder portion covering the outside of the cylindrical portion, a covering plate extending outward from the outer circumference of the bottom of the covering cylinder portion, side covering side walls formed by bending downward from both lateral sides of the covering plate, and a clamping wall formed by bending relatively inward from the bottom of the covering side wall and clamped on the bottom surface of the insulating base, and the leaf spring arm does not overlap with the clamping wall in the up and down directions.

[0015] Preferably, the inner wall surface of the covering cylinder is provided with a protruding convex portion, the outer peripheral surface of the covering cylinder is provided with a covering groove, the insulating upper cover is integrally injection molded inside the covering cylinder in the metal shell, and the convex portion is wrapped by the covering groove.

[0016] The radio frequency switch of the present application forms a support wall by protruding upward at the second longitudinal end of the insulating base, and forms an inclined surface toward the second longitudinal end of the insulating base on the support wall, and the free end of the leaf spring arm of the movable terminal forms a support end supported on the inclined surface. When the main cantilever is pressed down and the leaf spring arm is elastically deformed downward, the support end of the leaf spring arm does not need to move along the second end of the insulating base in the longitudinal direction, but moves along the inclined surface toward the first end of the insulating base. As a result, the leaf spring arm does not become longer when it is deformed, so there is no need to provide more space in the longitudinal direction for the leaf spring arm of the movable terminal to move, but the length of the leaf spring arm is reduced when it is deformed. In this way, the product size can be effectively reduced to make it miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional assembly diagram of the radio frequency switch of this application;

[0018] Figure 2 This is a three-dimensional exploded view of the radio frequency switch of this application;

[0019] Figure 3 This is a three-dimensional exploded view of the radio frequency switch of the present application from another angle;

[0020] Figure 4 This is a diagram showing the coordination between the moving terminal and the static terminal of the RF switch of this application;

[0021] Figure 5 This is a three-dimensional diagram of the moving terminal and the static terminal of the radio frequency switch of the present application when they are assembled on the insulating base and are in a non-working state without being pressed down;

[0022] Figure 6 This is a side view of the moving terminal and the static terminal of the RF switch of the present application when they are in a non-working state;

[0023] Figure 7 This is a three-dimensional diagram of the moving terminal and the static terminal of the radio frequency switch of the present application when they are assembled on the insulating base and are in a downward pressing working state;

[0024] Figure 8 This is a side view of the moving terminal and the static terminal of the RF switch of this application when they are in working state.

[0025] The meanings of the symbols in the accompanying drawings are:

[0026] Metal shell-10; cover plate-11; coated cylinder-12; convex part-121; introduction hole-13; coated side wall-14; clamping wall-15; insulating cover-20; main body-21; cylindrical part-22; coated groove-221; plug-in hole-23; pressing platform-24; pressing block-25; pit-26; insulating base-30; bottom plate-31; receiving part-311; stopper-312; avoidance groove-313; concave space-314; first notch-315; second notch-316 ; Support platform-32; First and second support columns-331, 332; Support wall-35; Edge portion-351; Inclined surface-352; Moving terminal-40; First welding leg-41; First vertical portion-42; Main cantilever-43; Leaf spring arm-44; Support arm-441; Support end-442; Support point-443; Support portion-45; Lower folding portion-451; Support leg-452; Static terminal-50; Second welding leg-51; Second vertical portion-52; Fixed portion-53; Contact arm-54. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] This application is Figure 1 The X direction shown is the left-right direction (lateral direction), the Y direction is the front-back direction (longitudinal direction), and the Z direction is the upward vertical direction.

[0031] See also Figures 1 to 4 As shown, the RF switch of the present application includes an insulating base 30, an insulating upper cover 20, a moving terminal 40 clamped between the insulating base 30 and the insulating upper cover 20, a static terminal 50, and a metal shell 10 that fixes the insulating base 30 and the insulating upper cover 20 as a whole.

[0032] The insulating base 30 includes a bottom plate 31 and a plurality of support platforms 32 protruding upward from the outside of the bottom plate 31. The bottom plate 31 is provided with a first notch 315 and a second notch 316 for assembling the movable terminal 40 and the static terminal 50 at both longitudinal ends. The bottom plate 31 is provided with an escape groove 313 in the middle of one side of the first notch 315 along the longitudinal direction, and a concave space 314 is provided from the middle of the bottom plate 31 to the second notch 316. The escape groove 313 is provided with receiving portions 311 on both lateral sides, and the receiving portion 311 protrudes upward toward the second notch 316 to form a stopper 312, and the receiving portion 311 is a part of the bottom plate 31.

[0033] The bottom plate 31 is formed with a first and a second support column 331 and 332 protruding upwards at the inner side of the second notch 316, wherein the first support column 331 is located at the inner side and the second support column 332 is located at the outer side, and the horizontal plane of the first support column 331 is higher than the horizontal plane of the second support column 332. The bottom plate 31 is formed with a support wall 35 protruding upwards at the end edge of the second notch 316, wherein the end edge of the support wall 35 protrudes upwards to form an edge portion 351 and an inclined surface 352 extending obliquely downward from the edge portion 351 toward one side of the first notch 315. The support wall 35 is located at both sides of the second notch 316 in the horizontal direction.

[0034] The movable terminal 40 includes a first welding leg 41 located at the bottom of the first notch 315, a first vertical portion 42 formed by bending upward from one end of the first welding leg 41 and extending upward along the first notch 315, a main cantilever 43 formed by bending horizontally from the first vertical portion 42 and extending toward the second notch 316, and a pair of leaf spring arms 44 formed by bifurcating and extending from both sides of the main cantilever 43. The main cantilever 43 extends from above the avoidance groove 313 to the concave space 314, wherein the width of the main cantilever 43 above the concave space 314 is greater than the width of the main cantilever 43 above the avoidance groove 313. A pair of leaf spring arms 44 are formed by extending obliquely toward the concave space 314 from the lateral sides of the free end of the main cantilever 43, and the leaf spring arm 44 includes a support arm 441 extending from the lateral sides of the main cantilever 43, a support end 442 bent upward from the free end of the support arm 441, and a support point 443 formed on the lower surface of the support end 442, the support point 443 is supported on the inclined surface 352 of the support wall 35, and the end edge of the support end 442 does not exceed the support wall 35.

[0035] The movable terminal 40 further includes a support portion 45 formed by obliquely bending downward from both sides of the transverse portion of the main cantilever 43 near one end of the first welding leg 41, and the support portion 45 is supported on the receiving portion 311 and limited by the stopper 312. The support portion 45 includes a lower folding portion 451 formed by bending obliquely downward and extending, and a support foot 452 formed by horizontally bending from the end of the lower folding portion 451, and the support foot 452 is supported on the receiving portion 311. The support of the support portion 45 provides an elastic support force to the main cantilever 43, so that the main cantilever 43 has more elastic force. The stopper 312 limits the support foot 452 from moving toward the second notch 316.

[0036] The static terminal 50 includes a second welding leg 51 located at the bottom of the second notch 316, a second vertical portion 52 bent upward from the second welding leg 51 and extending upward along the second notch 316, a fixing portion 53 bent from the second vertical portion 52 and extending to the first support column 331, and a pair of contact arms 54 extending obliquely upward along the lateral outer side from the fixing portion 53. The pair of contact arms 54 are respectively in contact with the upper side of the pair of leaf spring arms 44 and generate electrical connection.

[0037] The insulating upper cover 20 includes a main body 21, a cylindrical portion 22 protruding upward from the main body 21, and a plug hole 23 penetrating the cylindrical portion 22 and the main body 21. The main body 21 is formed with a pit 26 at a position corresponding to the avoidance groove 313, and a pressing platform 24 is formed at both sides of the pit 26 at positions corresponding to the receiving portion 311 and the stopper 312 to press the support foot 452 on the receiving portion 311. The main body 21 is formed with a pressing block 25 protruding downward at positions corresponding to the first and second support columns 331, 332. A covering groove 221 is formed on the outer peripheral surface of the cylindrical portion 22 near the main body 21, and the covering groove 221 is preferably an annular groove.

[0038] The metal shell 10 includes a covering cylinder 12 covering the outer periphery of the cylindrical portion 22, a covering plate 11 extending outward from the outer periphery of the bottom of the covering cylinder 12, a side covering side wall 14 extending downward from the lateral sides of the covering plate 11, and a clamping wall 15 formed by bending inward from the bottom of the covering side wall 14. An introduction hole 13 coaxial with the insertion hole 23 is provided in the middle of the covering cylinder 12. A convex portion 121 is stamped in the direction of the center of the circle at the position of the inner wall of the covering cylinder 12 corresponding to the covering groove 221. The insulating upper cover 20 and the metal shell 10 are integrally injection molded, and the convex portion 121 is wrapped in the covering groove 221 so that the insulating upper cover 20 and the covering cylinder 12 are tightly combined and not easy to separate.

[0039] The insulating upper cover 20 is integrally injection-molded in the metal housing 10 , or the insulating upper cover 20 can be separately injection-molded and then assembled in the metal housing 10 .

[0040] The assembly method of the radio frequency switch of the present application is as follows:

[0041] The metal shell 10, the movable terminal 40 and the static terminal 50 are firstly stamped and formed, the clamping wall 15 of the metal shell 10 has not yet been bent from the bottom of the covering side wall 14, and the movable terminal 40 and the static terminal 50 are each independently connected with a material strip; the insulating base 30 and the insulating upper cover 20 are injection molded (the insulating upper cover 20 can be formed by stamping the metal shell 10 and then injection molded with the metal shell 10). The movable terminal 40 is mounted on the insulating base 30, the first welding leg 41 and the first vertical portion 42 are located at the position of the first notch 315, the main cantilever 43 extends from above the avoidance groove 313 to above the concave space 314, a pair of leaf spring arms 44 extends obliquely downward from above the concave space 314 to abut against the inclined surface 352 of the support wall 35, and the leaf spring arms 44 abut against the inclined surface 352 of the support wall 35 through the supporting point 443; a pair of supporting portions 45 are supported on the receiving portion 311. The static terminal 50 is assembled on the insulating base 30, the second welding leg 51 and the second vertical portion 52 are located at the position of the second notch 316, the fixing portion 53 is supported on the upper surface of the first support column 331, and the pair of contact arms 54 are electrically overlapped on the inner sides of the pair of leaf spring arms 44. Then, the insulating upper cover 20 and the metal shell 10 are assembled downwardly on the insulating base 30, the supporting foot 452 of the supporting portion 45 is clamped by the receiving portion 311 and the pressing platform 24, and the fixing portion 53 is clamped by the first supporting column 331 and the pressing block 25. Finally, the bottom of the covering side wall 14 of the metal shell 10 is bent inwardly to form a clamping wall 15 clamped on the bottom surface of the insulating base 30 to fix the insulating base 30 and the insulating upper cover 20 as a whole.

[0042] Please continue reading Figures 5 to 8 As shown, the working principle of the RF switch of this application is as follows:

[0043] When it is initially in a non-working state (such as Figure 5 , Figure 6 As shown), the main cantilever 43 of the movable terminal 40 is arched upward under the support of the pair of leaf spring arms 44 and the support portion 45, and the pair of contact arms 54 of the static terminal 50 are electrically in contact with the inner sides of the pair of leaf spring arms 44; at this time, the dotted line L1 is defined as the initial position, the dotted line L2 is defined as the working position, and the free end of the support end 442 is at the initial position L1 in the vertical direction.

[0044] When in working state (such as Figure 7 , Figure 8As shown), the illustrated probe (not shown) is inserted into the jack 23 and then squeezed downwardly to press the main cantilever 43 of the movable terminal 40, forcing the main cantilever 43 and the leaf spring arm 44 to elastically deform downwardly, and at the same time, the leaf spring arm 44 is disconnected from the contact arm 54. At this time, the support end 442 of the leaf spring arm 44 moves along the inclined surface of the support wall 35 toward the first notch 315, that is, the free end of the support end 442 moves from the initial position L1 toward the first notch 315 to the working position L2. At the same time, the stopper 312 limits the support foot 452 of the support portion 45 from moving toward the second notch to ensure that the movable terminal 40 as a whole does not move toward the second notch 316.

[0045] The RF switch of the present application forms a support wall 35 by protruding upward at the second longitudinal end of the insulating base 30, and forms an inclined surface 352 on the support wall 35 facing the second longitudinal end of the insulating base 30. The free end of the leaf spring arm 44 of the movable terminal 40 forms a support end 442 supported on the inclined surface 352. When the main cantilever 43 is pressed down and the leaf spring arm 44 is elastically deformed downward, the support end 442 of the leaf spring arm 44 does not need to move along the second end of the insulating base in the longitudinal direction, but moves along the inclined surface 352 toward the first end of the insulating base 30. As a result, the leaf spring arm 44 does not become longer when deformed, so there is no need to provide more space in the longitudinal direction for the leaf spring arm 44 of the movable terminal to move, but the length of the leaf spring arm 44 becomes smaller when deformed. In this way, the product size can be effectively reduced to make it miniaturized.

[0046] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A radio frequency switch, comprising an insulating base, an insulating upper cover, a movable terminal and a static terminal clamped between the insulating base and the insulating upper cover, and a metal shell that holds the insulating base and the insulating upper cover as a whole, wherein the movable terminal comprises a first welding foot arranged on a first longitudinal side of the insulating base, a main cantilever extending from the first welding foot to above the surface of the insulating base, and a pair of leaf spring arms extending obliquely downward from both lateral sides of the main cantilever along the longitudinal direction, and the static terminal comprises a second welding foot arranged on a second longitudinal side of the insulating base and contact arms extending from the second welding foot to above and contacting a pair of leaf spring arms, characterized in that: The second longitudinal side edge of the insulating base protrudes upward to form a support wall, and the support wall includes an inclined surface facing the first longitudinal side of the insulating base. The leaf spring arm includes a support arm extending from the lateral sides of the main cantilever and a support end bent upward from the free end of the support arm. The lower surface of the support end has a support point supported on the inclined surface. The main cantilever and the support arm are straight as a whole or concave downward as a whole. The free ends of a pair of leaf spring arms are initially abutted against the inclined surface of the support wall. When the main cantilever is pressed downward, the leaf spring arm moves along the inclined surface toward the first longitudinal side of the insulating base.

2. The radio frequency switch according to claim 1, characterized in that: One end of the first longitudinal side of the main cantilever is higher than one end of the second longitudinal side of the support arm.

3. The radio frequency switch according to claim 1, characterized in that: The upper surface of the insulating base is recessed downward to form a concave space, and the surface of the inclined surface is connected to the lower surface of the concave space. When the main cantilever is pressed downward, the main cantilever and the support arm as a whole are elastically deformed into a concave shape toward the concave space, and the end edge of the second longitudinal side of the support end moves toward the first longitudinal side.

4. The radio frequency switch according to claim 3, characterized in that: The insulating base is provided with a first notch and a second notch for assembling the first welding leg of the movable terminal and the second welding leg of the static terminal on both sides of the longitudinal direction, respectively; the concave space is located in the middle position of the upper surface of the insulating base; an avoidance groove is opened on the upper surface of the insulating base along the first notch toward the second notch, the avoidance groove is communicated with the concave space, the second notch is communicated with the concave space, the first welding leg is located at the bottom of the first notch, the first welding leg is bent upward and extends upward along the first notch to form a first vertical portion, the main cantilever is formed by bending from the first vertical portion along the longitudinal direction, and the main cantilever is suspended above the avoidance groove and the concave space.

5. The radio frequency switch according to claim 4, characterized in that: The avoidance groove has two lateral sides protruding upward to form a receiving portion, the receiving portion protrudes upward on the side close to the second notch to form a stopper, the insulating base surface protrudes upward on the side of the second notch to form a first support column, the movable terminal also includes a supporting portion extending from the two lateral sides of the main cantilever close to the first notch to form a supporting portion supported on the receiving portion, and the supporting portion is limited by the stopper toward the second notch.

6. The radio frequency switch according to claim 5, characterized in that: The static terminal also includes a second vertical portion formed by bending from one end of the second welding leg and extending upward along the second notch, and a fixed portion formed by bending from the second vertical portion along the longitudinal direction and supported on the first support column, and a pair of contact arms are formed by extending obliquely upward from both lateral sides of the fixed portion.

7. The radio frequency switch according to claim 6, characterized in that: The insulating upper cover includes a cylindrical portion with an insertion hole, a main body formed at the bottom of the cylindrical portion, a pit formed on the bottom surface of the main body and corresponding to the avoidance groove, a pressure platform formed on both sides of the pit and clamping the support portion with the receiving portion, and a pressure block protruding downward from the bottom surface of the main body, the main cantilever is suspended between the avoidance groove and the concave space and the pit, and the pressure block and the first support column jointly clamp the fixing portion.

8. The radio frequency switch according to claim 7, characterized in that: The support portion includes a lower folding portion formed by bending downward and extending from both sides of the main cantilever, and a supporting foot supported on the receiving portion by horizontally bending from the lower folding portion. The supporting foot is limited by the stopper, and the pressing platform and the receiving portion clamp the supporting foot.

9. The radio frequency switch according to claim 6, characterized in that: A second support column is also provided on the upper surface of the insulating base at the position of the second notch, the second support column is located on the longitudinal outside of the first support column, the horizontal plane of the second support column is lower than the horizontal plane of the first support column, and the fixing part first passes over the second support column and then is supported on the upper surface of the first support column.

10. The radio frequency switch according to claim 8, characterized in that: The metal shell includes a covering cylinder portion covering the outside of the cylindrical portion, a covering plate extending outward from the outer circumference of the bottom of the covering cylinder portion, side covering side walls formed by bending downward from both lateral sides of the covering plate, and a clamping wall formed by bending relatively inward from the bottom of the covering side wall and clamped on the bottom surface of the insulating base, and the leaf spring arm does not overlap with the clamping wall in the up and down direction.

11. The radio frequency switch according to claim 10, characterized in that: The inner wall surface of the covering cylinder is provided with a protruding convex portion, the outer peripheral surface of the covering cylinder is provided with a covering groove, the insulating upper cover is integrally injection-molded inside the covering cylinder in the metal shell, and the convex portion is wrapped by the covering groove.

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