A Low-Friction Contact System for a Radio Frequency Relay

Abstract

The present invention provides a low-friction contact system for a radio frequency relay, which includes a cavity and a cavity cover arranged at the upper end of the cavity. The system further includes a first guide post and a second guide post fixedly arranged at the bottom of the cavity. The cavity cover is provided with a mounting hole, and a push block is arranged in the mounting hole. The push block extends with a push rod, and the distal end of the push rod is connected to a moving contact piece for controlling the on-off of a static contact. The push block is provided with a first guide hole and a second guide hole, and the first guide post and the second guide post respectively penetrate through the first guide hole and the second guide hole. The push block moves up and down along the first guide post and the second guide post to drive the moving contact piece to move. The low-friction contact system of the present invention uses guide posts to limit the push block moving up and down. The push block has a self-lubricating function and is not prone to rotation, enhancing the stability and reliability of the contact system, simplifying the structure, improving the radio frequency transmission performance, and greatly prolonging the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency relays, and particularly to a low-friction contact system for a radio frequency relay. Background Art

[0002] A radio frequency coaxial relay, also known as a microwave coaxial relay, is a radio frequency relay with a coaxial high-frequency connector as the radio frequency lead-out end. Since the microwave signal transmitted by the coaxial high-frequency connector has the characteristics of high frequency, wide bandwidth, and large amount of information, radio frequency coaxial relays are widely used in multiple communication, relay communication, scatter communication, mobile communication, satellite communication, radar systems, navigation systems, electronic countermeasures, measurement and detection, and other systems in the fields of aerospace, aviation, navigation, communication, military, and technology. Therefore, the operational reliability and stability of radio frequency coaxial relays are very important.

[0003] Currently, in the driving structure of a radio frequency coaxial relay, generally, a push rod drives a moving reed (moving contact) to move linearly in the pushing direction to achieve the closing and opening actions between the static and moving contacts. Due to the characteristics of the radio frequency structure, it is necessary to strictly control the movement position of the moving contact. Except for the movement in the pushing direction, no movement or rotation in other directions is allowed. Generally, the rotation of the moving contact is restricted by a stop pin. However, when the moving contact operates, there will be mutual friction with the stop pin. If the frictional force is too large, a large amount of friction particles will be generated after long-term use, affecting the product reliability. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a low-friction contact system for a radio frequency relay, which is made of a polyether ether ketone material (PEEK) with self-lubricating properties and is limited by guide posts.

[0005] The present invention is realized through the following technical solutions:

[0006] The present invention discloses a low-friction contact system for a radio frequency relay, including a cavity and a cavity cover arranged at the upper end of the cavity. It also includes a first guide post and a second guide post fixed to the bottom of the cavity. The cavity cover is provided with a mounting hole, and a push block is arranged in the mounting hole. The push block extends with a push rod, and the distal end of the push rod is connected to a moving contact piece for controlling the on-off of the static contact. The push block is provided with a first guide hole and a second guide hole, and the first guide post and the second guide post respectively penetrate through the first guide hole and the second guide hole. The push block moves up and down along the first guide post and the second guide post and drives the moving contact piece to move.

[0007] Further, a spring is sleeved on the push rod, and the spring is used for the reset of the push block.

[0008] Further, the push block is made of PEEK material.

[0009] Further, the first guide post and the second guide post have the same length and are both longer than the lengths of the first guide hole and the second guide hole.

[0010] Implementing a low-friction contact system for a radio frequency relay according to the present invention has the following technical features and beneficial technical effects:

[0011] The low-friction contact system of the present invention uses guide posts to limit the up-and-down movement of the push block. The push block has a self-lubricating function and is not prone to rotation, enhancing the stability and reliability of the contact system, simplifying the structure, improving the radio frequency transmission performance, and greatly extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 Schematic diagram of the low-friction contact system of the radio frequency relay according to the embodiment of the present invention;

[0014] Figure 2 Another perspective schematic diagram of the low-friction contact system of the radio frequency relay according to the embodiment of the present invention;

[0015] Figure 3 Cross-sectional view of the push block in the low-friction contact system of the radio frequency relay according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0017] Please refer to Figure 1 、 Figure 2 and Figure 3 for the embodiments provided by the present invention,

[0018] A low-friction contact system for a radio frequency relay, comprising a cavity 1 and a cavity cover 2 arranged at the upper end of the cavity 1, further comprising a first guide post 3 and a second guide post 4 fixedly arranged at the bottom of the cavity 1. The cavity cover 2 is provided with a mounting hole, and a push block 5 is arranged in the mounting hole. The push block 5 is made of PEEK material. The push block 5 extends with a push rod 51, and the distal end of the push rod 51 is connected to a moving contact piece 7 for controlling the on / off of a static contact 6. The push block 5 is provided with a first guide hole 52 and a second guide hole 53. The first guide post 3 and the second guide post 4 respectively penetrate through the first guide hole 52 and the second guide hole 53. The push block 5 moves up and down along the first guide post 3 and the second guide post 4 and drives the moving contact piece 7 to move up and down.

[0019] A spring 8 is sleeved on the push rod 51, and the spring 8 is used for resetting the push block 5.

[0020] The first guide post 3 and the second guide post 4 are of the same length and are both longer than the lengths of the first guide hole 52 and the second guide hole 53.

[0021] Further explanation:

[0022] PEEK (the Chinese name is polyetheretherketone) is a special engineering plastic with excellent properties such as high temperature resistance, self-lubrication, easy processing and high mechanical strength. The influence of high and low temperature impact on the material is very small, ensuring the service life of the push block. The symmetrically arranged guide posts and guide holes are in micro-gap fit. Due to the self-lubricating function of the PEEK material, it can ensure that the push block moves freely up and down along the guide posts without the push block rotating.

[0023] Implementing a low-friction contact system for a radio frequency relay of the present invention has the following technical features and beneficial technical effects:

[0024] The low-friction contact system of the present invention uses guide posts to limit the up and down movement of the push block. The push block has a self-lubricating function and is not easy to rotate, enhancing the stability and reliability of the contact system, simplifying the structure, improving the radio frequency transmission performance, and greatly extending the service life.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-friction contact system for a radio frequency relay, comprising a cavity and a cavity cover disposed at the upper end of the cavity, characterized in that, It further includes a first guide post and a second guide post fixedly arranged at the bottom of the cavity. An installation hole is provided on the cavity cover, and a push block is arranged in the installation hole. The push block extends with a push rod, and the distal end of the push rod is connected to a moving contact piece for controlling the on / off of the static contact. The push block is provided with a first guide hole and a second guide hole, and the first guide post and the second guide post respectively penetrate through the first guide hole and the second guide hole. The push block moves up and down along the first guide post and the second guide post and drives the moving contact piece to move; A spring is sleeved on the push rod, and the spring is used for the reset of the push block; The push block is made of PEEK material.

2. The low-friction contact system of the RF relay according to claim 1, wherein The first guide post and the second guide post are of the same length and are both longer than the lengths of the first guide hole and the second guide hole.

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