High-performance single-pole double-throw relay

Abstract

The high-performance single-pole double-throw relay comprises a coil, a permanent magnet and a soft magnet, a supporting frame is arranged below the permanent magnet, a left pressure elastic piece and a right pressure elastic piece are arranged on the two sides of the lower portion of the supporting frame, and a left through hole and a right through hole are formed in the soft magnet. A left push rod ball and a right push rod ball are arranged in the left through hole and the right through hole respectively, and a left movable contact piece and a right movable contact piece are arranged below the left push rod ball and the right push rod ball respectively. According to the high-performance single-pole double-throw relay, when the permanent magnet pushes the push rod ball, the permanent magnet firstly contacts with the pressure elastic sheet on the surface of the permanent magnet, and due to the elastic force effect of the pressure elastic sheet, shaking of the push rod ball is reduced, the performance of the relay is improved, and the manufacturing cost of the relay is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency switches and relays, in particular to a high-performance single-pole double-throw relay. 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, thereby affecting the performance of the relay. This requires high requirements for the position and size accuracy of the push rod, 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 high-performance single-pole double-throw relay to solve the problem proposed 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] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-performance single-pole double-throw relay, comprising a coil, a permanent magnet and a soft magnetic body, a support frame is provided below the permanent magnet, a left pressure spring plate and a right pressure spring plate are provided on both sides below the support frame, a left through hole and a right through hole are provided on the soft magnetic body, a left push rod ball and a right push rod ball are provided in the left through hole and the right through hole respectively, a limiting ring is provided around the left push rod ball and the right push rod ball, and a left movable contact piece and a right movable contact piece are provided below the left push rod ball and the right put rod ball respectively.

[0007] Preferably, the support frame is integral, and the permanent magnet is embedded in the upper portion of the support frame.

[0008] Preferably, an inverted tripod is provided at the lower portion of the support frame, and the left pressure spring sheet and the right pressure spring sheet are provided on both sides of the tripod.

[0009] Preferably, the left movable contact piece and the right movable contact piece are supported by a left supporting piece and a right supporting piece respectively.

[0010] Preferably, the left supporting plate and the right supporting plate are connected with a left reaction force spring piece and a right reaction force spring piece respectively.

[0011] Preferably, it further includes a base plate and a first contact, a second contact and a third contact arranged on the base plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are: a high-performance single-pole double-throw relay:

[0013] like Figure 1 The excitation coil 42 generates an electromagnetic field H (directed downward) perpendicular to the transverse magnetic field of the permanent magnet, generating a torque on the permanent magnet 41, causing the permanent magnet 41 to rotate clockwise, causing its right pressure spring 44 to push the push rod ball 31, causing the movable contact piece 21 to move downward and connect contacts 11 and 12. Similarly, the reverse excitation coil 42 generates a reverse electromagnetic field and reverse torque, causing the permanent magnet 41 to rotate counterclockwise, causing its right pressure spring 45 to push the push rod ball 32, causing the movable contact 22 to move downward and connect contacts 11 and 13. The utility model has a support frame provided below the permanent magnet. The support frame is an integrated structure, and the permanent magnet is embedded in the upper part of the support frame. The left and right pressure springs are provided on both sides of the lower part of the support frame. The lower part of the support frame is provided with an inverted tripod, and the left and right pressure springs are provided on both sides of the tripod. When the permanent magnet pushes the push rod ball, it first contacts the pressure springs on the surface of the permanent magnet. Due to the elastic force of the pressure springs, the shaking of the push rod ball is reduced, the performance of the relay is improved, and the manufacturing cost of the relay is reduced. The push rod of the relay of the utility model is a round ball. The round push rod reduces the friction of the push rod, prolongs the service life of the relay, and improves the safety performance of the relay. The push rod with a spherical structure makes the overall structure of the relay simple and easy to manufacture, thereby reducing the manufacturing cost of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the spherical push rod connection structure in the present invention;

[0016] Figure 3 This is a structural diagram of the soft magnetic body of the utility model.

[0017] Figure 4 It is a structural diagram of the support frame of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying 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.

[0019] See also Figure 1-4 The utility model provides a technical solution: a high-performance single-pole double-throw relay, including a coil 42, a permanent magnet 41 and a soft magnetic body 40, a support frame 46 is provided below the permanent magnet 41, and a left pressure spring piece 45 and a right pressure spring piece 44 are provided on both sides below the support frame 46, and a left through hole and a right through hole are provided on the soft magnetic body 40, and a left push rod ball 32 and a right push rod ball 31 are respectively provided in the left through hole and the right through hole, 31 and 32 are push rod balls.

[0020] The permanent magnet 41 (such as NdFeB, SmCo, etc.) has a magnetizing direction that is horizontal (direction of the solid arrow M).

[0021] The support frame 46 is an integrated structure, and the permanent magnet 41 is embedded in the upper portion of the support frame 46. An inverted tripod is provided at the lower portion of the support frame 46, and a left pressure spring 45 and a right pressure spring 46 are provided on both sides of the tripod.

[0022] A left movable contact piece 22 and a right movable contact piece 21 are respectively provided below the left putter ball 32 and the right putter ball 31. The left movable contact piece 22 and the right movable contact piece 21 are generally made of elastic conductive metal such as beryllium copper.

[0023] The left movable contact piece 22 and the right movable contact piece 21 are supported by a left supporting piece 23 and a right supporting piece 24 respectively. The left supporting piece 23 and the right supporting piece 24 can be made of engineering plastic or ceramic material.

[0024] The left supporting piece 23 and the right supporting piece 24 are connected to a left reaction force spring piece 25 and a right reaction force spring piece 26 respectively. The left reaction force spring piece 25 and the right reaction force spring piece 26 can be made of elastic metal (such as beryllium copper).

[0025] The bottom plate and the first contact 11, the second contact 12 and the third contact 13 are arranged on the bottom plate. The bottom plate can be a PCB, and the first contact 11, the second contact 12 and the third contact 13 are formed on the PCB.

[0026] 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 high-performance single-pole double-throw relay, comprising a coil (42), a permanent magnet (41) and a soft magnetic body (40), characterized in that: A support frame (46) is provided below the permanent magnet (41), and a left pressure spring plate (45) and a right pressure spring plate (44) are provided on both sides below the support frame (46). A left through hole and a right through hole are provided on the soft magnetic body (40), and a left push rod ball (32) and a right push rod ball (31) are provided in the left through hole and the right through hole respectively. A left movable contact piece (22) and a right movable contact piece (21) are provided below the left push rod ball (32) and the right push rod ball (31) respectively.

2. A high-performance single-pole double-throw relay according to claim 1, characterized in that: The support frame (46) is integral, and the permanent magnet (41) is embedded in the upper portion of the support frame (46).

3. A high performance single-pole double-throw relay according to claim 2, characterized in that: An inverted tripod is provided at the lower portion of the support frame (46), and the left pressure spring sheet (45) and the right pressure spring sheet (44) are provided on both sides of the tripod.

4. A high performance single-pole double-throw relay according to claim 1, characterized in that: The left movable contact piece (22) and the right movable contact piece (21) are supported by a left supporting piece (23) and a right supporting piece (24) respectively.

5. A high performance single-pole double-throw relay according to claim 4, characterized in that: The left supporting plate (23) and the right supporting plate (24) are respectively connected to a left reaction force spring plate (25) and a right reaction force spring plate (26).

6. A high performance single-pole double-throw relay according to claim 3, characterized in that: It also includes a bottom plate and a first contact (11), a second contact (12) and a third contact (13) arranged on the bottom plate.

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