Radio frequency switch with novel solenoid structure

Abstract

The utility model discloses a radio frequency switch with a novel solenoid structure, which comprises a left electromagnetic driving assembly and a right electromagnetic driving assembly, and a left push rod contact assembly and a right push rod contact assembly are arranged below a lower magnetic conductive sheet. The left push rod contact assembly and the right push rod contact assembly each comprise an upper push rod, a lower push rod, a lower counter-force spring, a contact piece and a limiting flexible belt, the lower magnetic conductive piece is provided with a through hole, and the lower push rod penetrates through the through hole to make contact with the contact piece. One part of the limiting flexible belt is bonded and fixed with the contact piece, the other part of the limiting flexible belt is positioned and fixed in the metal structural body, the metal structural body is encircled below the lower magnetic conductive piece, and a cavity is formed by the metal structural body and the lower magnetic conductive piece. According to the radio frequency switch of the utility model, the stability of the radio frequency switch is improved, and the limiting flexible belt can reduce the buffer force of the push rod, so that the performance of the radio frequency switch is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency switches and relays, in particular to a radio frequency switch with a novel solenoid structure. Background Art

[0002] An RF coaxial switch (relay) is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the change in the input quantity reaches a specified level. It creates an interactive relationship between the control system and the controlled system. Commonly used in automated control circuits, it is essentially an "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in circuits such as automatic regulation, safety protection, and circuit switching.

[0003] While there are numerous types and quantities of relays available today, RF switches typically utilize a push rod to push a movable conductive plate into contact with a pair of connector terminals, thereby connecting the RF signal path between the two connector terminals. A common design involves a pair of electromagnets causing a seesaw-like soft magnetic element to swing, thereby actuating the push rod's switching action.

[0004] However, most existing relays use an electromagnet to directly push the push rod to move. The hardness of the electromagnet and the push rod is relatively high. There is no buffering force when they contact each other, and the push rod will shake. At the same time, the electromagnet will violently hit the top of the shell when it rotates and rebounds, thereby affecting the performance of the relay. This requires that the position and dimensional accuracy of the push rod are relatively high, thereby increasing the manufacturing accuracy of the entire relay, increasing the manufacturing difficulty of the relay, and increasing the manufacturing cost of the relay. Utility Model Content

[0005] The purpose of the present utility model is to provide a radio frequency switch with a novel solenoid structure to solve the problem raised in the above-mentioned background technology that the position and dimensional accuracy of the push rod are relatively high, thereby improving the manufacturing accuracy of the entire relay, increasing the manufacturing difficulty of the relay, and increasing the manufacturing cost of the relay.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A radio frequency switch with novel solenoid structure, its characterized in that, including left electromagnetic drive assembly and right electromagnetic drive assembly, the below of left electromagnetic drive assembly and right electromagnetic drive assembly is provided with lower magnetic conducting sheet, the below of lower magnetic conducting sheet is provided with left push rod contact component and right push rod contact component, left push rod contact component and right push rod contact component all include upper push rod, lower push rod, lower counter force spring, contact sheet and limiting flexible belt, lower magnetic conducting sheet is provided with through hole and lower push rod passes through through hole and contacts contact sheet, one part of limiting flexible belt is bonded together with contact sheet, and another part is positioned and fixed in metal structure, and the enclosure of metal structure is below lower magnetic conducting sheet and forms cavity with lower magnetic conducting sheet.

[0007] Preferably, the left electromagnetic drive assembly and the right electromagnetic drive assembly each include a movable iron core, a coil, a magnetic conductor, and a permanent magnet.

[0008] Preferably, the movable iron core is provided with a push rod hole, and the upper push rod moves up and down in the push rod hole.

[0009] Preferably, the upper magnetic conducting sheet is provided with a permanent magnet above.

[0010] Preferably, the cavity is provided with a left coaxial connector, a middle left coaxial connector, and a right coaxial connector below, and the left coaxial connector, the middle left coaxial connector, and the right coaxial connector each include a conductor core, an insulator, and an outer sleeve, and the upper portions of the left coaxial connector, the middle left coaxial connector, and the right coaxial connector are located in the cavity.

[0011] Compared with the prior art, the utility model has the beneficial effects that a high-performance single-pole double-throw relay:

[0012] As shown in Figure 1 , Figure 2 When the coil 212 is not powered, the movable iron core 211 is attracted upward by the permanent magnet 234 (as shown in the state of 210a), the left lower counter force spring 52 pushes the lower push rod 254 upward and makes the contact sheet 253 away from the coaxial connectors 110 and 120a, so that the corresponding radio frequency channels of the coaxial connectors 110 and 120a are in the off state.

[0013] When the coil 212 is powered and excited to generate an electromagnetic field, the movable iron core 211 is repelled by the permanent magnet 234 and is attracted downward by the upper magnetic conducting sheet 231 and the lower magnetic conducting sheet 235 (as shown in the state of 210b), the right upper push rod 251 is pushed downward, and the right contact sheet 253 is moved downward and contacts the coaxial connectors 110 and 120b, so that the corresponding radio frequency channels of the coaxial connectors 110 and 120b are in the on state.

[0014] In the RF switch of the present invention, a portion of the limiting flexible band 259 is bonded and fixed to the contact piece 253, while the other portion is positioned and fixed in the cavity metal structure 71. The function of the limiting flexible band 259 is to enable the contact piece 253 to move freely up and down, while restricting the movement of the contact piece 253 in other directions (such as forward, backward, left, and right), thereby achieving high repeatability and consistency of RF contact, improving the stability of the RF switch, and the limiting flexible band can reduce the push rod buffering force, thereby improving the performance of the RF switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the contact piece and the limiting flexible belt in the utility model; DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-2 The utility model provides a technical solution: a highly stable single-pole double-throw relay, a coaxial radio frequency switch 100 includes electromagnetic drive components 210a and 210b, an upper push rod 251 and a lower push rod 254, push rod contact components 250a and 250b, coaxial connectors 110, 120a and 120b, and a radio frequency channel cavity 70.

[0019] Electromagnetic drive assemblies 210a and 220b include a movable iron core 211, a coil 212, a magnetic conductor 233, upper and lower magnetic conductive plates 231 and 235, and a permanent magnet 234. The movable iron core 211 has a push rod hole 213 at its bottom, allowing an upper push rod 251 to be inserted and moved up and down. The lower magnetic conductive plate 235 has a push rod hole, allowing a lower push rod 254 to pass through the hole and contact the contact plate 253, transmitting the electromagnetic force to the contact plate.

[0020] The push rod contact assembly 250 a and 250 b includes an upper push rod 251 and a lower push rod 254 , a lower reaction spring 52 , a contact piece 253 and a limiting flexible belt 259 .

[0021] Coaxial connectors 110 , 120 a and 120 b include a conductor core 111 , an insulator 112 and a jacket 113 .

[0022] RF channel cavity 70: a cavity formed by the metal structure 71 and the lower magnetic conductive sheet 235.

[0023] A portion of the limiting flexible band 259 is bonded to the contact piece 253, while the other portion is positioned and fixed within the cavity metal structure 71. The function of the limiting flexible band 259 is to allow the contact piece 253 to move freely up and down while restricting its movement in other directions (such as forward, backward, left, and right), thereby achieving high repeatability and consistency in RF contact.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A radio frequency switch with a novel solenoid structure, characterized in that: The invention comprises a left electromagnetic drive component (210a) and a right electromagnetic drive component (210b), wherein a lower magnetic conductive sheet (235) is provided below the left electromagnetic drive component (210a) and the right electromagnetic drive component (210b), and a left push rod contact component (250a) and a right push rod contact component (250b) are provided below the lower magnetic conductive sheet (235), and the left push rod contact component (250a) and the right push rod contact component (250b) both comprise an upper push rod (251), a lower push rod (254), A lower reaction spring (52), a contact piece (253) and a limiting flexible belt (259); the lower magnetic conductive piece (235) is provided with a through hole and the lower push rod (254) passes through the through hole to contact the contact piece (253); a part of the limiting flexible belt (259) is bonded and fixed together with the contact piece (253), and the other part is positioned and fixed in the metal structure (71); the metal structure (71) is surrounded below the lower magnetic conductive piece (235) and forms a cavity (70) with the lower magnetic conductive piece.

2. The radio frequency switch with a novel solenoid structure according to claim 1, characterized in that: The left electromagnetic drive assembly (210a) and the right electromagnetic drive assembly (210b) both comprise a movable iron core (211), a coil (212), a magnetic conductor (233), and a permanent magnet (234); an upper magnetic conductor sheet (231) is provided above the magnetic conductor (233).

3. The radio frequency switch with a novel solenoid structure according to claim 2, characterized in that: A push rod hole (213) is provided in the movable iron core (211), and the upper push rod (251) moves up and down in the push rod hole.

4. The radio frequency switch with a novel solenoid structure according to claim 2, characterized in that: A permanent magnet (234) is provided above the upper magnetic conductive sheet (231).

5. The radio frequency switch with a novel solenoid structure according to claim 1, characterized in that: A left coaxial connector (120a), a middle left coaxial connector (110), and a right coaxial connector (120b) are arranged below the cavity (70); the left coaxial connector (120a), the middle left coaxial connector (110), and the right coaxial connector (120b) each comprise a conductor core (111), an insulator (112), and a jacket (113); and the upper portions of the left coaxial connector (120a), the middle left coaxial connector (110), and the right coaxial connector (120b) are located within the cavity.

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